The present invention relates to a slide gate mechanism. To be specific, the present invention relates to a safe and efficient automatic pressure loading slide gate mechanism, and it belongs to metal casting technology field.
Background of the Invention
As the forging industry is boosting its development, there are many types of slide gate mechanism which cannot be universally applied due to operating conditions, structures and other factors. Besides, those gates feature large size and weight, complex structure, difficult installation and disassembly, low working efficiency, huge waste of materials and frequent leakage during operation, which severely trouble a smooth production and reduce the production efficiency while increase the costs.
Reference is made to the Patent number CN202079248U, by Vermeegen, dated 23/05/2011, titled "Cast steel roll bottom-casting system". This invention provides a cast steel roll bottom-casting system comprising a bottom box, wherein the bottom box is connected with a central circle sand box; the central circle sand box is connected with an upper roll neck sand box; the upper roll neck sand box is connected with a dead head sand box; and the bottom box, the central circle sand box, the upper roll neck sand box and the dead head sand box are internally provided with a roll. The roll comprises an upper roll neck, a roll body and a lower roll neck, wherein the lower roll neck is connected with a central casting pipe; a bottom-casting system is placed inside the central casting pipe; and the bottom-casting system is internally provided with a refractory brick. The cast steel roll bottom-casting system has the advantages that molten steel is injected smoothly, the sand grains, the foreign matters and the impurities in the molten steel float upwards easily and the like.
Another reference is made to the Patent application number 736/CHENP/2003, by SMS DEMAG AG dated 14/05/2003, titled "A Method of Producing Stainless Steels". The invention relates to a method for producing stainless steels, in particular steels containing chromium and chromium-nickel. The method is carried out in a melting device containing a metallurgical vessel, or in a melting device containing at least two vessels for supplying a steel-casting installation, an electric arc furnace process and an air-refining process taking place alternately in the two

vessels. To improve the efficiency of a method of this type, the aim of the invention is to carry out a reversible treatment of unreduced converter slag in the electric arc furnace mode. To achieve this, in the first treatment stage, the slag with a high chromium content is melted together with the added charge, the slag is then reduced during the melting process with the silicon and carbon under favourable thermodynamic conditions of the arc, once the slag has reached a minimum temperature of 1,490 °C and the slag is subsequently removed. The air-refining process is then carried out, during which the carbon content is reduced to a value of less than 0.9 %. The metal slag is tapped at a tapping temperature of between 1,620 and 1,720 °C, the unreduced slag with a high chromium content from the air-refining process remaining in the treatment vessel.
Another reference is made to the Patent application number 3331/MUM/2012, by Dinesh S. Shukla dated 20/11/2012, titled "A Graphitic Cast Iron Composition (Crucible) For Complete Aluminium Melting Process of Aluminium Scrap Using Medium Frequency Induction Furnace with Graphitic Cast Iron Pot/Silicon Carbide Pot/Graphite Pot". A Complete Melting Process of aluminium scrap using medium frequency induction furnace for production of different grades of Aluminium and Aluminium Alloys as suitable for automobile industries, die caster (GDC,PDC,LPDC), sand casting, permanent mould casting, extrusion etc, comprising the following steps: Cleaning and charging, clean scrap and/ or Pure Ingot and / Alloying Metal, Virgin Aluminium / Scrap in which added a Pure Cu, Si, Mn, Ti & Cr With Initial Charging, Late additions of Mn, Ti, Cu, Si, Ni & Cr is Added as Pure Metal with help of squirrel cage arrangement (if required for composition setting). Also process of Degassing, Fluxing, Flushing & Structure Modification is possible. The melting process is suitable for intermittent operation as well as continues operations. All type of commercial scrap as well as processed dross can be melted with Induction Furnace. Generated Slag & Final disposal is neutral in nature. This process is clean and provides Carbon Credit due to low pollution.
Another reference is made to the Patent application number 2543/MUMNP/2014, by BAOSHAN IRON & STEEL CO. LTD dated 29/06/2012, titled "Control Method and Apparatus for Continuous Casting Steel Pouring". A control method for continuous casting steel pouring. The method comprises: 1. measuring and reading a ladle casting location signal by using a ladle location sensor mounted on a ladle rotary table; 2. determining in a steel pouring optimization control

computer whether the steel pouring of the ladle starts; 3. feeding steel slag measurement data back to an inference controller by using a steel slag measurement sensor mounted above a ladle slide gate nozzle; 4. in the inference controller comparing the read steel slag measurement data with a manually set steel slag value; if the steel slag measurement data is smaller than the manually set steel slag value returning to a previous step; and if the steel slag measurement data is greater than the manually set steel slag value outputting and feeding a cylinder control variable to a PI controller; and 5. in the PI controller comparing a fed in cylinder location signal with an actually measured cylinder location signal and performing calculation and outputting to control a cylinder driving unit to push a cylinder to move so as to make the opening degree of the ladle slide gate nozzle smaller. An apparatus for continuous casting steel pouring using the above control method is further provided. By means of the above method and apparatus the amount of the molten steel flow of the ladle is controlled thereby improving the yield of the molten steel and decreasing the production cost.
Another reference is made to the Patent application number 850/MUM/2010, by JSW STEEL LIMITED dated 25/03/2010, titled "A Method of Controlled Ramping of Tundish Weight for Reduced Emulsification and A System Thereof". The invention relates to a method for weight-based auto ramping of liquid steel in tundish during ladle change over adapted to reduce emulsification by controlled slow rate of steel filling and a system to implement the method. The method involves low filling rate of steel as a function of the ladle through put and result in ladle filling to desired level in 12-15 minutes time avoiding turbulence in liquid steel and minimizing silica inclusion or slag entrapment, ensuring improved cleanliness and quality of cast steel. The system of the invention is having PLC based control of pneumatically operating/opening slide gate for steel filling in tundish favoring automatic weight-based filling up to a safe level. The auto ramping of tundish is thus capable of wide industrial application in steel industry with less defects and rejections of change over slabs in continuous casting, with improved productivity at less cost in a safe and reliable manner.
Another reference is made to the Patent application number 9141/DELNP/2014, by JFE STEEL CORPORATION dated 30/11/2012, titled "Method for Manufacturing High Purity Steel Casting and Tundish". A tundish provided with a weir having a wall part and an eaves-shaped part projecting horizontally at the upper edge part

of the wall part i s used to float up and separate inclusions i n molten steel in a more reliable and effective manner than in the past. A tundish provided with a weir having a notch at one or more locations, and having a wall part that extends up - ward so as to surround the molten metal injector : from four directions, and further having an eaves-shaped part that projects horizontally at the upper edge part of the wall part, the weir being positioned between a molten steel injector and a molten steel tap hole, i s used to continuously cast steel castings within a range in which the molten steel bath surface height (H) and the flow rate (Q) at which the molten steel i s injected into the tundish satisfy formula, where i s the weir height, S is the area of the upper opening part, L is the distance from the distal end of the eaves-shaped part to the short- side surface of the tundish, and W is the distance from the distal end of the eaves-shaped part to the long- side surface of the tundish.
Another reference is made to the Patent application number 602/KOLNP/2015, by JFE STEEL CORPORATION dated 30/10/2012, titled "Sliding shutter for tank with metal melt". When manufacturing molten steel from hot metal using a two base converter-type refining furnace and using one as a hot metal pre-treatment refining furnace and the other as a hot metal decarburization refining furnace, the molten slag generated in the decarburization refining furnace is used while still hot as a refining agent in the pre-treatment refining furnace without compromising the productivities of the two refining furnaces. A refining method for manufacturing molten steel from hot metal using a converter type refining furnace with at least two bases and using one as a hot metal pre-treatment refining furnace and using the other as a decarburization refining furnace for the hot metal pre-treated in the pre-treatment refining furnace. After the molten steel obtained by decarburization refining in the decarburization refining furnace has been tapped in a ladle, the slag remaining inside the decarburization refining furnace is allowed to flow down, still in the molten state from above stacked iron scraps to solidify at least a portion of the slag. Then in pre-treatment of hot metal in the pre-treatment refining furnace, the slag, at least a portion of which has been solidified, is used together with the iron scraps while still hot.
Another reference is made to the Patent number RU2461444C2, by Verner Keller dated 16/07/2007, titled "Sliding shutter for tank with metal melt". This invention provides a vane gate for containing a molten metal vessel, comprising guided in

the sliding body sliding vane unit with a pushing rod which is designed to connect via a clutch with a drive rod of the linear drive while on the sliding body provided for receiving the push rod and drive rod on the side of the clutch holder for the linear drive, characterized in that the holder is provided with automatically acting locking device for the linear drive and automatically acting locking device for the push rod of the sliding block.
Another reference is made to the Patent number JP4734405B2, by Albert Gauche, Dominic Barrel and William Rose dated 10/03/2005, titled "Linear sliding gate valve for a metallurgical vessel". This invention provides a fixed plate having a slide plate and a second orifice having a first orifice, Said slide plate supports a slide said slide plate with respect to the fixed plate, the relative positions of the first and the second orifice and orifice, includes a slidable tray and adapted to control the flow to the outside from the metallurgical vessel, wherein the slide plate is rotatable relative to said slidable tray Yes, The ratchet mechanism for determining the position of a predetermined rotational angle direction of the slide plate and further comprising, in the linear sliding gate valve for the metallurgical vessel, Characterized in that to form the fixed frame of is attached to said slidable tray; said ratchet mechanism the slidable tray is a ratchet mechanism and, a linear sliding gate valve for the metallurgical vessel.
Another reference is made to the Patent number CA2721597A1, by Benno Steiner, Werner Keller and Truttmann dated 17/04/2008, titled "Closing plate and sliding closure on the spout of a receptacle for molten metal". This invention provides a closing plate for a sliding closure on the spout of a receptacle for molten metal, especially of a converter, comprises an elongate refractory plate and a sheet metal jacket surrounding the same. The refractory plate has a sliding surface which can be braced with a sliding surface of a refractory closure plate interacting therewith or with a sliding surface of a refractory head part. The refractory plate has a tapering section which forms an angle with the sliding surface on at least one side delimiting the sliding surface, said tapering section being associated with a section of the refractory plate that projects beyond the sheet metal jacket. The closing plate according to the invention allows the risk of damage to the front faces of the refractory parts to be braced with each other to be substantially reduced during bracing of the parts with each other and/or during a relative adjustment of the refractory parts that are braced with each other.

Another reference is made to the Patent number KR20060126975A, by Warner Keller, dated 31/10/2003, titled "Sliding closing element, with coupling". This invention provides a sliding closing element, especially for an intermediate distributor or similar metallurgical containers. According to the invention, the mobile sliding plate of said closing element can be driven by means of a drive comprising a driving rod and a push rod connected thereto. In order to ensure that the oscillatory movement of the sliding plate does not impair the connection during operation, a coupling arranged as a connecting body between the opposite ends of the push rod and the driving rod is provided with two coupling parts that engage in each other without play.
Another reference is made to the Patent number EP2226140A1, by Vesuvius Group SA, dated 18/02/2009, titled "Actuating device for a slide gate valve for the casting of molten metal". This invention provides a drive device of a control valve for casting liquid metal, comprising a main rod for controlling the opening and closing of the valve, and means coupling the main rod to the valve, characterized in that it further comprises means for controlling the coupling means capable of activating and deactivating the coupling means.
Reference is made to the Patent application number CN103451358A, by Yang Wei and Yang Yufu, dated 31/05/2012, titled "Slag-blocking steel-tapping device for revolving furnace". The invention discloses a slag-blocking steel-tapping device for a revolving furnace. The slag-blocking steel-tapping device includes a connecting plate, a mounting plate and a doorframe. Both sides of the upper face of the connecting plate are each provided with a guiding positioning hook, a positioning column and a swing bolt; both sides of the mounting plate are each provided with a hook shaft and half of a groove hole, and the mounting plate is embedded onto the connecting plate through the positioning columns; the door frame is connected with the mounting plate through a door frame hinge pin, sliding bars are arranged in the doorframe, sliding frames can sliding located in the door frame respectively along the sliding bars, and the interior of each sliding frame is provide with a spring box; the interiors of the sliding frames are also provide with a sliding slide plate brick and a sliding water gap brick, and the sliding slide plate brick and the sliding water gap brick are respectively provided with a steel flowing hole; the mounting plate is provided with a fixed slide plate brick, and the sliding

slide plate brick, the sliding water gap brick and the fixed slide plate brick perform relative motion.
Another reference is made to the Patent application number CN103525973A, by Wan Lixin, Zhao Jizeng, Wang Zhengfeng, Zhao Feng, Zhao Antang and Sun Xingqi, dated 30/09/2013, titled "Converter mechanism for slag blocking and steel tapping through sliding plates". The invention discloses a converter mechanism for slag blocking and steel tapping through sliding plates. A fixed frame is fixed on a connecting plate, an opening and closing frame is connected to the fixed frame through a hinge pin roll, a sliding frame is arranged inside the opening and closing frame, slidable sliding rails and fixed sliding rails are correspondingly arranged on two sides of the sliding frame and the opening and closing frame respectively, an inner nozzle brick is installed inside the fixed frame and pressed tightly by an inner nozzle pressing plate, an inner sliding plate brick is installed inside the fixed frame, an outer sliding plate brick is installed inside the sliding frame, an outer nozzle brick is installed inside an outer nozzle base and pushed against tightly by an outer nozzle pusher, and a driving device is located at the top of the sliding frame and connected with the sliding frame through a pin roll.
Another reference is made to the Patent application number 8779/CHENP/2012, by SMS SIEMAG AG, dated 19/03/2010, titled "Device and Method for Closing an Outflow Opening of a Metallurgical Vessel". The invention relates to a device and a method for closing an outflow opening of a metallurgical vessel. The device comprises a stopper rod which is arranged in the vessel above the outflow opening for closing the outflow opening a stopper rod mechanism for raising and lowering the stopper rod and a sensor for sensing oscillations of the stopper rod or the stopper rod mechanism. To detect the point in time for closing the outflow opening of the metallurgical vessel at as early a time as possible and to achieve an optimum separation between molten material and slag the device has a controller for activating the closing means for the outflow opening of the vessel depending on the factor of the oscillations at the stopper rod or at the stopper rod mechanism that are sensed by the sensor.
Another reference is made to the Patent application number CN101139640A, by Yan Yang, Yang Yufu, Wang Likun, Wang Wenli and Cai Yonghua, dated 25/09/2007, titled "Revolving furnace tap hole sliding gate slag-fending valve

apparatus". The invention provides a gate valve mechanism at a slide water gap at a tap hole of a converter, pertains to a steel-making machine, and is characterized in that semi-circular slots on an installation board are correspondingly inserted into positioning columns and positioning piles on a connection board, so reliable positioning is achieved; hold-down blind spring grooves with through bolt holes are provided at left and right side of a door frame, in each hold-down blind spring groove, hold-down springs and hold-down spring platens with through bolt holes are provided; the door frame and the hold-down spring platens pass through long hold-down bolts and are mounted rotatably on the installation board; at the bottom boards at the left and right inner side of the door frame, draw slips are provided; at the upper and lower part of the left and right outside of the slide frame, contact rollers are placed; rotating tightly the long hold-down bolts, the pressure will act on the contact rollers and the slide frame, so that the contact surfaces between sliding slide-board bricks and fixed slide-board bricks contact closely, which ensures very good air tightness and guarantees no steel and slag leakage; in addition, at the left and right side of the installation board, locking devices and hinging hooks are symmetrically arranged in vertical way for installing and dismounting oil cylinder, which allows rapid and reliable dismounting on line.
Another reference is made to the Patent application number CN202139256U, by Wu Baozhong, Wu Qiang, Zhang Qingping, Zhang Hong, Zhang Xiang and Maurobo, dated 30/06/2011, titled "Slag-blocking gate valve mechanism for steel-tapping hole of converter". The utility model relates to a slag-blocking gate valve mechanism for a steel-tapping hole of a converter. The slag-blocking gate valve mechanism comprises a fixing frame, a switching frame, a sliding frame, a fixed sliding plate brick, a movable sliding plate brick both, an outer nozzle brick, an outer nozzle fixing frame, and an outer nozzle mounting frame, wherein the middle parts of the fixed sliding plate brick and the moveable sliding plate brick are provided with holes; the fixing frame and the switching frame are arranged from the top to the bottom and are connected with each other through a pin shaft; the sliding frame is arranged in the switching frame; the fixed sliding brick is fixed in the fixing frame; the movable sliding plate brick and the outer nozzle brick are fixed in the sliding frame from the top to the bottom; the upper surface and the lower surface of the movable sliding brick are respectively contacted with the fixed

sliding plate brick and the outer nozzle brick; to sliding guide rail on the lower surface of the sliding frame is contacted with a fixed guide rail on the upper surface of the switching frame; an outer nozzle mounting frame fixed on the sliding frame is arranged between the switching frame and the outer nozzle brick; and the outer nozzle fixing frame is arranged between the outer nozzle mounting frame and the recess of the outside diameter of the lower part of the outer nozzle brick. The structure can be staggered in a sliding way through two sliding plate bricks with holes; and the steel-tapping hole is opened or closed to block the slag and discharge the steel.
Another reference is made to the Patent application number 6178/CHE/2013, by ABB Technology Ltd, dated 31/01/2014, titled "An Apparatus and A Method for Handling Molten Medium in Continuous Casting Process". The present invention relates to an apparatus for handling molten medium in a continuous casting process. The apparatus comprises of a regulator for regulating the molten medium with electromagnetic stirrer for effecting stirring in the molten medium electromagnetically and electromagnetic brake for effecting braking in the molten medium electromagnetically. The invention also relates to a method for handling molten medium in a continuous casting process. The method comprises the steps of effecting stirring and braking in the molten medium electromagnetically.
Another reference is made to the Patent application number US4776083A, by Manabu Sakamoto, Satoshi Tatsuta, Akira Murata, Natsuki Namura, Shigeki Tamada, Yoshinori Kawasaki and Norio Misaki, dated 22/03/1986, titled "Apparatus for mounting a siphon tapping tube onto a converter vessel". This invention provides an apparatus for mounting a siphon tapping tube onto a tap hole mounting part of a converter vessel has a lower car and an upper car, which are placed on a ladle car which travels beneath a converter vessel, the lower car and the upper car being capable of travelling in the direction of the travel of the ladle car and in the direction perpendicular to that of the travel of the ladle car, respectively, a loading table mounted on the upper car, which is guided by an upright support frame and being capable of moving upward and downward with a siphon tapping tube loaded on the table, and bolt tightening and untightening units which are provided on the loading table in positions corresponding to the respective bolt hole set positions in the flange of the siphon tapping tube and are

capable of receiving mounting bolts. TV camera is provided on the upper car, allowing the operator to monitor the tap hole mounting part.
Another reference is made to the Patent application number 67/KOL72014, by Mitra Mazumder Subhajit, Satya Prakash, Tiwari Satyendra Nath, Agrawal Roopak and Choubey Mukteshwar, dated 16/01/2014, titled "A System for Stabilization of Steel Making (BOF) Slag Through Hydration Treatment and A Method of Such Stabilization". The present invention relates to a system for stabilization of Steel Making (BOF) slag through hydration treatment using saturated steam and method for such stabilization. More particularly, the present invention is directed to provide a system for accelerated primary stabilization of BOF slag using steam as medium of stabilization through hydration, by introduction of saturated steam at predetermined pressure and temperature into a pressure vessel such as to induce penetration of steam into the slag sample and thereby stabilize the slag. The system and method to stabilize Steel Making (BOF) slag monitors the progress of the hydration reaction through surrogate parameters of pH and alkalinity which when stabilized can be used as indicator of end point of reaction and therefore can be used as an indicator of stabilization of BOF slag involving the stabilization of free lime at reduced level avoiding the conventional technical limitation of expansion of BOF slag and thus rendering the slag suitable for further use/reuse for variety of applications.
Another reference is made to the Patent application number 3485/KOLNP/2011, by JFE Steel Corporation, dated 24/07/2009, titled "Method for Desulfurizing Hot Metal". The present invention relates to a method for desulfurizing hot metal includes stirring hot metal to which a desulfurization agent has been added to scatter the desulfurization agent and desulfurize the hot metal, wherein the addition of the desulfurization agent to the hot metal is divided into multiple additions; and, in at least one addition among second and subsequent additions of the desulfurization agent, the desulfurization agent is added to slag caused to float to a surface of the hot metal by temporarily stopping the stirring or temporarily reducing a stirring force, thereby the reaction efficiency of the desulfurization agent added is improved. Preferably, a dipping depth of an impeller is decreased when the slag is caused to flow and the impeller is moved down when the slag caused to float is drawn into the hot metal.

Another reference is made to the Patent application number 1324/DELNP/2015, by Beijing Guodian Futong Science and Technology Development Co. Ltd., dated 25/07/2012, titled "Biomass Boiler Slag Treatment System and Process". The present invention relates to a biomass boiler slag treatment system and a process therefor. The biomass boiler slag treatment system comprises: a slag through, a slag transport apparatus and a burning apparatus. The burning apparatus is sealed provided between the slag trough and the slag transport apparatus and is able to move horizontally. The burning apparatus is controlled to be closed and then slag falls down the slag trough onto the re burning apparatus achieving the re burning of carbon in the slag with the heat produced by the combustion of carbon in the slag being returned to the hearth. The re burning apparatus is controlled to be opened and then slag falls onto the slag transport apparatus and is discharged. The biomass boiler slag treatment process comprises: closing the re burning apparatus vibrating slag by means of a grate to fall onto the burning apparatus stopping vibrating the grate and re burning carbon in the slag on the re burning apparatus and then returning the heat produced to the hearth; opening the re burning apparatus such that the slag falls onto the slag transport apparatus and is discharged; and repeating the above mentioned steps to achieve re burning of carbon in the slag and recovery of heat. By burning incompletely burnt carbon in the slag through the re burning apparatus slag heat recovery is achieved and boiler efficiency is improved.
However, none of the above-mentioned inventions provide an improved automatic pressure loading slide gate mechanism for higher safety and efficiency, said mechanism comprises of a fixed frame, a sliding frame, an opening/closing frame and a cavity, wherein the fixed frame is installed horizontally and at the upper end surface of the fixed frame there is a sliding frame at the bottom and an opening/closing frame at the top, and in the middle of this opening/closing frame there is a cavity where the lower nozzle is installed and the lower end surface of the fixed frame is connected to the upper nozzle, said mechanism characterized in that at the lower end surface of the sliding frame there is a primary recess, and the secondary recess is provided on the upper end surface of the fixed frame, and in the primary recess and the secondary recess, a primary sliding block and a secondary sliding block are provided respectively

which can move relatively to each other, where a primary casting hole is provided in the primary sliding block and a secondary casting hole is provided in the secondary sliding block.
Objective of the invention
The main objective of the present invention is to provide automatic pressure loading slide gate mechanism for higher safety and efficiency.
Another objective of the present invention is to control the flow of metal casting.
Another objective of the present invention is to minimize a risk of breakout accident during operation.
Another objective of the present invention is to minimize the risk of steel re-oxidation.
Another objective of the present invention is to reduce the cost of production.
Another objective of the present invention is to prolonged the service life of slide gate mechanism.
Summary of the invention
The present invention provides a safe and efficient automatic pressure loading slide gate mechanism. It includes a fixed frame that is installed horizontally and at the upper end surface of this fixed frame there is a sliding frame at the bottom and an opening/closing frame at the top. Further, in the middle of this opening/closing frame there is a cavity where the lower nozzle is installed and the lower end surface of the fixed frame is connected to the upper nozzle, where at the lower end surface of the sliding frame there is a primary recess, and the secondary recess is provided on the upper end surface of the fixed frame. In the primary recess and the secondary recess, a primary sliding block and a secondary sliding block are provided respectively which can move relatively to each other, and a primary casting hole is provided in the primary sliding block and a secondary casting hole is provided in the secondary sliding block. This invention features simple structure, easy installation and disassembly, sharply reduction of overall weight, less materials, a small number of structural components, lower failure rate, more stable and safe operation, better sealing, longer service life and higher working efficiency.

Statement of the invention
Accordingly, the present invention provides an improved automatic pressure loading slide gate mechanism for higher safety and efficiency, said mechanism comprises of a fixed frame, a sliding frame, an opening/closing frame and a cavity, wherein the fixed frame is installed horizontally and at the upper end surface of the fixed frame there is a sliding frame at the bottom and an opening/closing frame at the top, and in the middle of this opening/closing frame there is a cavity where the lower nozzle is installed and the lower end surface of the fixed frame is connected to the upper nozzle, said mechanism characterized in that at the lower end surface of the sliding frame there is a primary recess, and the secondary recess is provided on the upper end surface of the fixed frame, and in the primary recess and the secondary recess, a primary sliding block and a secondary sliding block are provided respectively which can move relatively to each other, where a primary casting hole is provided in the primary sliding block and a secondary casting hole is provided in the secondary sliding block.
Detail description of drawings
Figure 1 is the front view of the invention.
Figure 2 is the top view of the invention.
Figure 3 is the section view at the A-A part in Figure 2.
Figure 4 is the section view at the B-B part in Figure 2.
Figure 5 is the structure diagram of the invention.
Where referral numerals are following: 1 - fixed frame; 2 - sliding frame; 3 -opening/closing frame; 4 - cavity; 5 - primary recess; 6 - secondary recess; 7 -primary sliding block; 8 - secondary sliding block; 9 - box; 10 - spring slot; 11 -spring; 12 - spring pressing plate; 13 - pressing arm; 14 - nut; 15 - pressing head; 16 - V-shape opening; 17 - mounting recess; 18 - pressing shaft; 19 -slideway; 20 - stop hole; 21 - stop pin; 22 - primary casting hole; 23 - secondary casting hole; 24 - primary connector; 25 - secondary connector; 26 - hydraulic cylinder base; 27 - hydraulic cylinder; 28 - mounting table; 29 - secondary pin hole; 30 - secondary pin; 31 - primary flange; 32 - secondary pin; 33 - secondary flange; 34 - secondary through-hole.

Detail description of invention
It should be noted that the particular description with features, designs, components, construction, working and embodiments set forth in the specification below are merely exemplary of the wide variety and arrangement of instructions which can be employed with the present invention. The present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. All the features disclosed in this specification may be replaced by similar other or alternative features performing similar or same or equivalent purposes. Thus, unless expressly stated otherwise, they all are within the scope of present invention. Various modifications or substitutions are also possible without departing from the scope or spirit of the present invention. Therefore, it is to be understood that this specification has been described by way of the most preferred embodiments and for the purposes of illustration and not limitation.
The present invention provides a safe and efficient automatic pressure loading slide gate mechanism. It includes a fixed frame that is installed horizontally; at the upper end surface of this fixed frame there is a sliding frame at the bottom and an opening/closing frame at the top and in the middle of this opening/closing frame there is a cavity where the lower nozzle is installed. The lower end surface of the fixed frame is connected to the upper nozzle and at the lower end surface of the sliding frame there is a primary recess, and the secondary recess is provided on the upper end surface of the fixed frame. In the primary recess and the secondary recess, a primary sliding block and a secondary sliding block are provided respectively which can move relatively to each other and a primary casting hole is provided in the primary sliding block and a secondary casting hole is provided in the secondary sliding block.
Boxes are provided at both sides of the opening/closing frame and at the upper end surface of the boxes are spring slots provided in which multiple springs are uniformly distributed. A spring pressing plate is provided at the upper end of the boxes and the spring pressing plate can move up and down in the spring slot. A pressing arm is vertically installed in the spring slot and pressing arm has one of its ends beneath the box along the direction of its length and the other one above the spring pressing plate.

Further, the spring pressing plat is connected with the pressing arm through nuts and a pressing head is provided at the end of the pressing arm which is far from the spring pressing plate, where a V-shape opening is provided in the pressing head horizontally and the fixed frame is just below pressing head and provided with mounting grooves. A pressing shaft is provided in the mounting groove horizontally and the pressing shaft gears to the V-shape opening and is fixed to it.
A slideway is provided on the upper end surface of the sliding frame and pin holes are provided on the opening/closing frame above the slideway, and a stop pin which can move in the slideway is provided inside the pin hole.
When the pressing head is in the first working position, namely when the pressing shaft is gearing and fixed to the V-shape opening, centerline of the primary casting hole and that of the secondary casting hole are aligned with each other, at this time, the mechanism is pressed and when the pressing head is in the second working position, namely when the pressing shaft is detached from V-shape opening, the primary casting hole and the secondary casting hole are completely staggered with each other and closed, at this time, the pressing is released.
The present invention has a simple structure that is easy for its installation and disassembly. When the pressing head is in the first working position, namely when the pressing shaft is gearing and fixed to the V-shape opening, centerline of the primary casting hole and that of the secondary casting hole are aligned with each other, at this time, the mechanism is pressed. A downward pulling force generated by the gearing and fixing of the pressing shaft to the V-shape opening forces the pressing arm to drive the spring pressing plate to move downward. Meanwhile, the spring pressing plate applies force on the springs to make them deformed by force and to bring the opening/closing frame and the sliding frame a downward force. Finally, the primary sliding block and the secondary sliding block closely fit with each other to avoid leakage. The delicate structure of the mechanism brings advantages such as reliable and stable sealing and long service life, contributing to a smooth production and much improved working efficiency.
The safe and efficient automatic pressure loading slide gate mechanism has a primary connector provided on the opening/closing frame along the direction of its length and at the end of the sliding frame which is close to the primary

connector is a secondary connector provided as an extension. One end of the fixed frame is extended to a hydraulic cylinder base, on which is a hydraulic cylinder mounted; the stretching end of the hydraulic cylinder is connected to the secondary connector; a mounting table is on the hydraulic cylinder.
Further, a secondary pin hole is provided at the mounting table and the secondary pin firstly goes through the secondary pin hole and then the primary connector to fixed the primary connector. In such a structure, the hydraulic cylinder drives the sliding frame stably and reliably. It is a simple, safe and reliable structure to use a secondary pin to fix the opening/closing frame, with few components and a lower cost.
The safe and efficient automatic pressure loading slide gate mechanism has one of the boxes provided with a primary flange. A secondary pin is provided in the primary flange horizontally and at the side of the fixed frame which is close to the primary flange is provided a secondary flange and a secondary through-hole sliding-fit to the tertiary pin is provided on the secondary flange. By means of providing a primary flange in one of the boxes, a hinge joint is established with the tertiary pin and the secondary through-hole when pressing is released, and then the tertiary pin becomes the axis for easy and quick opening of the device for replacement. Thus, the working efficiency is improved with less difficulty and cost.
The safe and efficient automatic pressure loading slide gate mechanism has a secondary pin in a conic shape, and the secondary through-hole is a conical hole. Since a conical structure has the function of guiding, it brings quick positioning and improves working efficiency.
The present invention discloses a safe and efficient automatic pressure loading slide gate mechanism. It includes a fixed frame 1 that is installed horizontally; at the upper end surface of this fixed frame 1 there is a sliding frame 2 at the bottom and an opening/closing frame 3 at the top; in the middle of this opening/closing frame 3 there is a cavity 4 where the lower nozzle is installed; the lower end surface of the fixed frame 1 is connected to the upper nozzle; at the lower end surface of the sliding frame 2 there is a primary recess 5, and the secondary recess 6 is provided on the upper end surface of the fixed frame 1; in the primary recess 5 and the secondary recess 6, a primary sliding block 7 and a secondary sliding

block 8 are provided respectively which can move relatively to each other; a primary casting hole 22 is provided in the primary sliding block 7 and a secondary casting hole 23 is provided in the secondary sliding block 8.
Boxes 9 are provided at both sides of the opening/closing frame 3 and at the upper end surface of the boxes 9 are spring slots 10 provided in which multiple springs 11 are uniformly distributed; a spring pressing plate 12 is provided at the upper end of the boxes 9; the spring pressing plate 12 can move up and down in the spring slot 10; a pressing arm 13 is vertically installed in the spring slot 10; pressing arm 13 has one of its ends beneath the box 9 along the direction of its length and the other one above the spring pressing plate 12; the spring pressing plat 12 is connected with the pressing arm 13 through nuts 14; a pressing head 15 is provided at the end of the pressing arm 13 which is far from the spring pressing plate 12; a V-shape opening 16 is provided in the pressing head 15 horizontally; the fixed frame 1 is just below the pressing head 15 and provided with mounting grooves 17; a pressing shaft 18 is provided in the mounting groove 17 horizontally; the pressing shaft 18 gears to the V-shape opening 16 and is fixed to it; A slideway 19 is provided on the upper end surface of the sliding frame 2; pin holes 20 are provided on the opening/closing frame 3 above the sliding chute 19; a stop pin 21 which can move in the sliding chute 19 is provided inside the pin hole 20.
When the pressing head 15 is in the first working position, namely when the pressing shaft 18 is gearing and fixed to the V-shape opening 16, centerline of the primary casting hole 22 and that of the secondary casting hole 23 are aligned with each other, at this time, the mechanism is pressed; when the pressing head 15 is in the second working position, namely when the pressing shaft 18 is detached from V-shape opening 16, the primary casting hole 22 and the secondary casting hole 23 are completely staggered with each other and closed, at this time, the pressing is released.
A primary connector 24 is provided on the opening/closing frame 3 along the direction of its length; at the end of the sliding frame 2 which is close to the primary connector 24 is a secondary connector 25 provided as an extension; one end of the fixed frame 1 is extended to a hydraulic cylinder base 26, on which is a hydraulic cylinder 27 mounted; the stretching end of the hydraulic cylinder 27

is connected to the secondary connector 25; a mounting table 28 is on the hydraulic cylinder 26; a secondary pin hole 29 is provided at the mounting table 28; the secondary pin 30 firstly goes through the secondary pin hole 29 and then the primary connector 24 to fixed the primary connector 24.
One of the boxes 9 is provided with a primary flange 31; a secondary pin 32 is provided in the primary flange 31 horizontally; at the side of the fixed frame 1 which is close to the primary flange 31 is a secondary flange 33 provided; a secondary through-hole 34 sliding-fit to the tertiary pin 32 is provided on the secondary flange 33; the secondary pin 32 is in a conic shape, and the secondary through-hole 34 is a conical hole.
The hydraulic cylinder 27 pulls the secondary connector 25 to move; while, with the stop pin 21, the opening/closing frame 3 and the sliding frame 2 move simultaneously; the opening/closing frame 3 stops moving when it 3 moves to the mounting table 28; the slideway 19 enables the sliding frame 2 to keep moving until stop; while the opening/closing frame 3 is moving, the pressing arm 13 also moves with it, making the pressing head 15 beneath the pressing arm 13 gear to the pressing shaft 18; besides, the downward movement of the pressing arm 13 forces the springs 11 to deform, thus to tightly attach the primary sliding block 7 on the sliding frame 2 to the secondary sliding head 8 on the fixed frame 1 to realize sealing. All movements are performed in an opposite way to release pressing.
This invention features simple structure, easy installation and disassembly, sharply reduction of overall weight, less materials, a smaller number of structural components, low failure rate, more stable and safe operation, better sealing, longer service life and higher working efficiency.
In preferred embodiment, the present invention provides an improved automatic pressure loading slide gate mechanism for higher safety and efficiency, said mechanism comprises of a fixed frame, a sliding frame, an opening/closing frame and a cavity, wherein the fixed frame is installed horizontally and at the upper end surface of the fixed frame there is a sliding frame at the bottom and an opening/closing frame at the top, and in the middle of this opening/closing frame there is a cavity where the lower nozzle is installed and the lower end surface of the fixed frame is connected to the upper nozzle, said mechanism characterized

in that at the lower end surface of the sliding frame there is a primary recess, and the secondary recess is provided on the upper end surface of the fixed frame, and in the primary recess and the secondary recess, a primary sliding block and a secondary sliding block are provided respectively which can move relatively to each other, where a primary casting hole is provided in the primary sliding block and a secondary casting hole is provided in the secondary sliding block.
In another embodiment, boxes are provided at both sides of the opening/closing frame and the boxes at the upper end surface are provided with spring slots in which multiple springs are uniformly distributed, where a spring pressing plate is provided at the upper end of the boxes and the spring pressing plate can move up and down in the spring slot.
In another embodiment, a pressing arm is vertically installed in the spring slot and pressing arm has one of its ends beneath the box along the direction of its length and the other one above the spring pressing plate, where the spring pressing plat is connected with the pressing arm through nut and a pressing head is provided at the end of the pressing arm 13 which is far from the spring pressing plate.
In another embodiment, a V-shape opening is provided in the pressing head horizontally and the fixed frame is just below pressing head and provided with mounting grooves, where a pressing shaft 18 is provided in the mounting groove horizontally and the pressing shaft 18 gears to the V-shape opening and is fixed to it.
In another embodiment, a sliding chute is provided on the upper end surface of the sliding frame and pin holes are provided on the opening/closing frame above the slideway, and a stop pin which can move in the slideway is provided inside the pin hole.
In another embodiment, a primary connector is provided on the opening/closing frame along the direction of its length and at the end of the sliding frame which is close to the primary connector is a secondary connector provided as an extension, where one end of the fixed frame is extended to a hydraulic cylinder base, on which is a hydraulic cylinder mounted and the stretching end of the hydraulic cylinder is connected to the secondary connector and a mounting table is on the hydraulic cylinder, and a secondary pin hole is provided at the mounting table,

where the secondary pin firstly goes through the secondary pin hole and then the primary connector to fixed the primary connector.
In another embodiment, one of the boxes is provided with a primary flange and a secondary pin is provided in the primary flange horizontally, where at the side of the fixed frame 1 which is close to the primary flange is provided with a secondary flange 33 and a secondary through-hole sliding-fit to the tertiary pin is provided on the secondary flange.
In another embodiment, said pressing head is in the first working position, namely when the pressing shaft is gearing and fixed to the V-shape opening, centeriine of the primary casting hole and that of the secondary casting hole are aligned with each other, at this time, the mechanism is pressed and when the pressing head is in the second working position, namely when the pressing shaft is detached from V-shape opening, the primary casting hole and the secondary casting hole are completely staggered with each other and closed, at this time the pressing is released.
In another embodiment, said secondary pin is in a conic shape, and the secondary through-hole is a conical hole.
Advantages:
• It has a simple structure that is easy for its installation and disassembly.
• When the pressing head is in the first working position, namely when the pressing shaft is gearing and fixed to the V-shape opening, centeriine of the primary casting hole and that of the secondary casting hole are aligned with each other, at this time, the mechanism is pressed. A downward pulling force generated by the gearing and fixing of the pressing shaft to the V-shape opening forces the pressing arm to drive the spring pressing plate to move downward. Meanwhile, the spring pressing plate applies force on the springs to make them deformed by force and to bring the opening/closing frame and the sliding frame a downward force. Finally, the primary sliding block and the secondary sliding block closely fit with each other to avoid leakage. The delicate structure of the mechanism brings advantages such as reliable and stable sealing and long service life, contributing to a smooth production and much improved working efficiency.

• By means of providing a primary flange in one of the boxes, a hinge joint is established with the tertiary pin and the secondary through-hole when pressing is released, and then the tertiary pin becomes the axis for easy and quick opening of the device for replacement. Thus, the working efficiency is improved with less difficulty and cost.

We Claim:

1.An improved automatic pressure loading slide gate mechanism for higher safety and efficiency, said mechanism comprises of a fixed frame (1), a sliding frame (2), an opening/closing frame (3) and a cavity (4), wherein the fixed frame (1) is installed horizontally and at the upper end surface of the fixed frame (1) there is a sliding frame (2) at the bottom and an opening/closing frame (3) at the top, and in the middle of this opening/closing frame (3) there is a cavity (4) where the lower nozzle is installed and the lower end surface of the fixed frame (1) is connected to the upper nozzle, said mechanism characterized in that at the lower end surface of the sliding frame (2) there is a primary recess 5, and the secondary recess (6) is provided on the upper end surface of the fixed frame (1), and in the primary recess (5) and the secondary recess (6), a primary sliding block (7) and a secondary sliding block (8) are provided respectively which can move relatively to each other, where a primary casting hole (22) is provided in the primary sliding block (7) and a secondary casting hole (23) is provided in the secondary sliding block (8) for stable sealing and long service life.
2. The improved automatic pressure loading slide gate mechanism for higher safety and efficiency as claimed in claim 1, wherein boxes (9) are provided at both sides of the opening/closing frame (3) and the boxes at the upper end surface (9) are provided with spring slots (10) in which multiple springs (11) are uniformly distributed, where a spring pressing plate (12) is provided at the upper end of the boxes (9) and the spring pressing plate (12) can move up and down in the spring slot (10).
3. The improved automatic pressure loading slide gate mechanism for higher safety and efficiency as claimed in claim 1, wherein a pressing arm (13) is vertically installed in the spring slot (10) and pressing arm (13) has one of its ends beneath the box (9) along the direction of its length and the other one above the spring pressing plate (12), where the spring pressing plat (12) is connected with the pressing arm (13) through nuts (14) and a pressing head (15) is provided at the end of the pressing arm (13) which is far from the spring pressing plate (12).
4. The improved automatic pressure loading slide gate mechanism for higher safety and efficiency as claimed in claim 1, wherein a V-shape opening (16) is

provided in the pressing head (15) horizontally and the fixed frame (1) is just below pressing head (15) and provided with mounting grooves (17), where a pressing shaft (18) is provided in the mounting groove (17) horizontally and the pressing shaft (18) gears to the V-shape opening (16) and is fixed to it.
5. The improved automatic pressure loading slide gate mechanism for higher safety and efficiency as claimed in claim 1, wherein a sliding chute (19) is provided on the upper end surface of the sliding frame (2) and pin holes (20) are provided on the opening/closing frame (3) above the slideway (19), and a stop pin (21) which can move in the slideway (19) is provided inside the pin hole (20).
6. The improved automatic pressure loading slide gate mechanism for higher safety and efficiency as claimed in claim 1, wherein a primary connector (24) is provided on the opening/closing frame (3) along the direction of its length and at the end of the sliding frame (2) which is close to the primary connector (24) is a secondary connector (25) provided as an extension, where one end of the fixed frame (1) is extended to a hydraulic cylinder base (26), on which is a hydraulic cylinder (27) mounted and the stretching end of the hydraulic cylinder (27) is connected to the secondary connector (25) and a mounting table (28) is on the hydraulic cylinder (26), and a secondary pin hole (29) is provided at the mounting table (28), where the secondary pin (30) firstly goes through the secondary pin hole (29) and then the primary connector (24) to fixed the primary connector (24).
7. The improved automatic pressure loading slide gate mechanism for higher safety and efficiency as claimed in claim 1, wherein one of the boxes (9) is provided with a primary flange (31) and a secondary pin (32) is provided in the primary flange (31) horizontally, where at the side of the fixed frame (1) which is close to the primary flange (31) is provided with a secondary flange (33) and a secondary through-hole (34) sliding-fit to the tertiary pin (32) is provided on the secondary flange (33).
8. The improved automatic pressure loading slide gate mechanism for higher safety and efficiency as claimed in claim 1, wherein the pressing head (15) is in the first working position, namely when the pressing shaft (18) is gearing and fixed to the V-shape opening (16), centerline of the primary casting hole (22) and that of the secondary casting hole (23) are aligned with each other, at this time,

the mechanism is pressed and when the pressing head (15) is in the second working position, namely when the pressing shaft (18) is detached from V-shape opening (16), the primary casting hole (22) and the secondary casting hole (23) are completely staggered with each other and closed, at this time the pressing is released.
9. The improved automatic pressure loading slide gate mechanism for higher safety and efficiency as claimed in claim 1, wherein said secondary pin (32) is in a conic shape, and the secondary through-hole is a conical hole.