Description:
FORM 2
THE PATENTS ACT, 1970
(39 OF 1970)
&
The Patents Rules, 2003
COMPLETE SPECIFICATION
(See section 10; rule 13)

1. Title of the invention – A SUBMERSIBLE PUMP WITH SHAFT PROTECTION

2. Applicant(s)

(a) NAME : JAYSONS EXPORTS
(b) NATIONALITY: INDIAN
(c) ADDRESS: PLOT NO G-838, METODA GIDC, B/H MURLIDHAR WEIGH BRIDGE, GATE NO 3, METODA GIDC, RAJKOT, GUJARAT – 360021 INDIA

3. PREAMBLE TO THE DESCRIPTION

The following specification particularly describes the invention and the manner in which it is to be performed.

A SUBMERSIBLE PUMP WITH SHAFT PROTECTION

FIELD OF THE INVENTION

The present invention is related to a submersible pump with shaft protection. More particularly, it is a submersible pump with enhanced shaft protection designed to increase the level of protection against shaft damage and extend the submersible pump's lifecycle.

BACKGROUND OF THE INVENTION

Submersible pumps play a crucial role in many applications, from drawing water from wells to managing sewage systems to oil rigs. These pumps are designed to work underwater, handling everything from clean water to dirty, debris-filled liquids. However, a common and frustrating problem with these pumps is the frequent damage to their shafts, which can lead to unexpected breakdowns and costly repairs.

One major issue is the grooves that are formed on the shaft due to the rotation of the impeller. Over time, the impeller’s movement wears down the shaft, creating grooves that weaken its structure and make it more prone to breaking.

Additionally, foreign debris in the liquid can get stuck within the submersible pump, causing further wear and tear. This not only damages the shaft but also reduces the pump’s efficiency and performance.

Once the shaft starts to deteriorate, the problems compound. The damage can cause the shaft to wobble, leading to vibrations that shake the whole system. These vibrations accelerate the wear and tear in the pump and other components, creating a vicious cycle of damage and increasing the chances of a complete pump failure. The shaft is of utmost importance within the submersible pump and hence most of the integrity of the submersible pump falls on the integrity of the shaft.

Despite various efforts to solve these issues, current solutions don’t fully protect the shaft. As a result, pump owners often face frequent maintenance, unexpected downtimes, and a shorter lifespan for their pumps. There’s a clear need for a better shaft protection system—one that can boost the pump’s durability, cut down on maintenance needs, and extend its useful life.

One such invention is disclosed in Patent “1428/CHE/2011” titled - Submersible motor with improved protection from the ingress of sand and slender particles. The invention discloses a thrust pad for sand guard, the thrust pad is fitted to the radial step portion provided on the sand guard. It is mounted on the motor shaft at the top bearing area of the motor.

Another such invention is disclosed in Patent “CN202510403U” titled - Protective device for submersible pump rotor shaft. The invention discloses a protective device for a submersible pump rotor shaft, including a motor front cover, impeller, and V-shaped sealing ring. The sealing ring's flared end connects to the motor front cover, while its ring end connects to the impeller, effectively preventing fine particles like sand from damaging the rotor shaft. This design extends the device's service life and maintains its precision and effectiveness.

The prior art discloses various protection elements for submersible pumps, predominantly focusing on damage caused by sand and foreign debris. However, these solutions often overlook the internal factors that can lead to damage. Specifically, the introduction of play and the wear and tear on the rotor shaft itself can significantly impact the pump's performance and longevity. This utility model addresses these internal issues, providing a comprehensive protective solution that not only guards against external particles but also mitigates the wear caused by internal components.

OBJECT OF THE INVENTION

The principle object of present invention is to overcome the drawbacks and limitations associated with prior technology by a submersible pump with shaft protection.

Another object of the present invention is to provide a submersible pump with shaft protection that has components that protect the shaft from damage from impeller edges while in use.

Yet another object of the present invention is to provide a submersible pump with shaft protection that prevents unwanted particles from entering the submersible pump.

Yet another object of the present invention is to provide a submersible pump with shaft protection that can be configured based on the user’s requirement.

Yet another object of the present invention is to provide a submersible pump with shaft protection that produces minimal vibrations to prevent damage to the submersible pump.

Yet another object of the present invention is to provide a submersible pump with shaft protection that transmits rotational power from the motor to the pump shaft without slippage.

Yet another object of the present invention is to provide a submersible pump with shaft protection that increases the submersible pump useable life.

Yet another object of the present invention is to provide a submersible pump with shaft protection that reduces maintenance and repair ability costs.

SUMMARY OF THE INVENTION
The main aspect of the present invention is a submersible pump with shaft protection that includes a mounting frame, a strainer, a plurality of wear rings, a connector bolt, a connector sleeve, a shaft, a plurality of impellers, a plurality of impeller sleeves, a plurality of impeller sleeve nuts, a protrusion, a plurality of diffuser bowls, a plurality of rubber stopper cap guide bushes, a stopper nut, a stopper washer, a stopper bush, a stopper bowl, a rubber stopper cap guide bush, a stopper cap, a non-return disk, an outlet bowl, a plurality of locking strips, and a cable guard. The impeller sleeve and impeller sleeve nut secure the impeller on the shaft through fastening. The protrusion within the impeller protects the shaft from damage and prevents unwanted particles from entering, thereby prolonging the life cycle of the submersible pump.
Another aspect of the present invention is to provide a submersible pump with shaft protection that has a protrusion to protect the shaft from damage.
Another aspect of the present invention is to provide a submersible pump with shaft protection that has stackable sub-assemblies so that it can be configured as per the requirement of the application of the user.
Another aspect of the present invention is to provide a submersible pump with shaft protection that has optimized internal cavity to support the locking strips, the rubber stopper cap guide bush, and stopper bush to reduce vibrations in the submersible pump.
Another aspect of the present invention is to provide a submersible pump with shaft protection that has keyslots in the shaft for rotational power transmission to prevent slippage and eliminate the need of welding the shaft.
Another aspect of the present invention is to provide a submersible pump with shaft that has an extended strainer to prevent foreign particles from entering the submersible pump.
Another aspect of the present invention is to provide a submersible pump with shaft protection to increase the lifecycle and decrease the maintenance and repair ability cost by having enhanced protection for the submersible pump mainly shaft.
BRIEF DESCRIPTION OF DRAWINGS
The foregoing summary, as well as the following detailed description of the invention, is better understood when read in conjunction with the appended drawings. For the purpose of illustrating the invention, exemplary constructions of the invention are shown in the drawings. However, the invention is not limited to the specific methods and structures disclosed herein. The description of a method step or a structure referenced by a numeral in a drawing is applicable to the description of that method step or structure shown by that same numeral in any subsequent drawing herein.

Fig. 1 is a sectional view of the impeller of the submersible pump with shaft protection

Fig. 2 is the assembly view of the submersible pump with shaft protection.

Fig. 3 is the sectional exploded view of the impeller of the submersible pump with shaft protection.

Fig. 4 is the assembly view of the submersible pump with shaft protection.

DETAILED DESCRIPTION OF INVENTION

The present invention overcomes the aforesaid drawbacks of the above, and other objects, features and advantages of the present invention will now be described in greater detail. Also, the following description includes various specific details and are to be regarded as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that: without departing from the scope of the present disclosure and its various embodiments there may be any number of changes and modifications described herein.

It must also be noted that as used herein and in the appended claims, the singular forms "a", "an," and "the" include plural references unless the context clearly dictates otherwise. Although any systems and methods similar or equivalent to those described herein can be used in the practice or testing of embodiments of the present invention, the preferred, systems and methods are now described.

As per the main embodiment of the present invention, a submersible pump with shaft protection (1000) comprising a mounting frame (101), a strainer (102), a plurality of wear ring (103), a connector bolt (104), a connector sleeve (105), a shaft (106), a plurality of impeller (107), a plurality of impeller sleeve (108), a plurality of impeller sleeve nut (109), a protrusion (110), a plurality of diffuser bowl (111), a plurality of rubber stopper cap guide bush (112), a stopper nut (113), a stopper washer (114), a stopper bush (115), a stopper bowl (116), a rubber stopper cap guide bush (117), a stopper cap (118), a non-return disk (119), an outlet bowl (120), a plurality locking strip (121), cable guard (122), plurality of keyslot (123), plurality of internal cavity (124). The impeller sleeve (108) and impeller sleeve nut (109) being capable of securing the impeller (107) on the shaft (106) via fastening; said protrusion (110) within the impeller (107) being capable of protecting the shaft from damage and keeping unwanted particles away hence prolonging the life cycle of the submersible pump.

As per detailed embodiment of the present invention, the protrusion (110) is the part of the impeller (107). The protrusion (110) being capable of protecting the shaft (106) by eliminating the chances of getting damaging grooves by the impeller (107) on to the shaft (106) while the submersible pump is in use. The protrusion (110) is designed to increase the contact surface area between itself and the shaft (106) and the impeller sleeve nut (109). Unlike the conventional edge-like contact surface, which can cause damage and grooves on the shaft, potentially leading to shaft failure, this improved design distributes the load more evenly across a larger area, thereby enhancing durability and reducing the risk of damage and failure of the submersible pump.
As per detailed embodiment of the present invention, the protrusion (110) is designed to significantly increase the surface contact area which also prevents slippage of the impeller (107) and effectively reduces the chances of grooving on the shaft (106). The added friction due to the increased surface contact area due to the protrusion (110) secures the shaft (106) better due to the added pressure on the impeller sleeve (108) which in turn exerts increased the pressure on the shaft (106). This results in improved protection on the shaft (106) and increase the lifecycle of the submersible pump.

As per detailed embodiment of the present invention, the protrusion (110) being capable of stopping unwanted particles from entering the impeller (107) and also in the space between, this reduces the chances of unwanted abrasion of the components and significantly reducing its wear and tear thus increasing the useful life of the submersible pump.

As per a detailed embodiment of the present invention, the impeller sleeve (108) and the impeller sleeve nut (109) secures the impeller (107) both axially and radially on the shaft (106). The impeller sleeve (108) features threads at one end, which engage with the threads of the impeller sleeve nut (109) to ensure a secure fastening.

As per another embodiment of the present invention, the plurality of locking strip (121) having a threaded portion on one end and a hook structure on the other end; said locking strip (121) is demountably attached to the mounting frame (101) via fastening and the hook structure securing the outlet bowl (120) by hooking on the cavity in its structure (120).

As per optional embodiment of the present invention, the submersible pump with shaft protection (1000) can be configured as per the user or application requirement. It has sub-assemblies which can be stacked to form an expanded submersible pump and vice versa. The sub assembly can be but not limited to wear ring (103), impeller (107), impeller sleeve (108), impeller sleeve nut (109), diffuser bowl (111), rubber guide bush bowl (112). The locking strips (121) length can vary based on the desired configuration of the submersible pump.

As per another embodiment of the present invention, the stopper bowl (116) is positioned as the final component in the sequence of the submersible pump with shaft protection (1000). The stopper bowl (116) shares similar structural characteristics with the diffuser bowl (111), with the distinction being that the stopper bowl (116) is positioned as the last component in the series of diffuser bowls (111)

As per another embodiment of the present invention, the mounting frame (101) having a plurality of internal cavity (124) to support the plurality of locking strip (121) and reduce the vibration of the assembly after fastening of the locking strip (121).

As per detailed embodiment of the present invention, the internal cavity (124) is specifically designed and optimized to facilitate the insertion and secure fastening of the locking strip (121). The internal cavity (124) being capable of providing a plurality of support for the locking strips (121). The plurality of supports is designed to stabilize the locking strips (121), effectively eliminating vibration of the submersible pump when fastened.

As per another embodiment of the present invention, the strainer (102) being capable of stopping debris in the water from reaching the internal components.

As per detailed embodiment of the present invention, the strainer (102) is expanded than the conventionally used smaller strainers. This strainer (102) offers enhanced efficiency in filtering out debris and foreign particles, significantly reducing the likelihood of clogging within the pump. By preventing the entry of larger particles, the expanded strainer not only improves the overall performance of the pump but also extends its operational life by minimizing the risk of blockages and associated damage

As per another embodiment of the present invention, the shaft (106) being capable of transferring rotational power via a motor to the submersible pump; said shaft (106) having a plurality of keyslot (123) on one end to engage with the motor shaft.

As per detailed embodiment of the present invention, the shaft (106) is designed to transfer rotational power from the motor to the submersible pump. Unlike traditional methods that rely on welding to connect the shaft to the motor, this innovative design incorporates a plurality of keyslot (123) at one end of the shaft (106). These keyslot (123) engage securely with the motor shaft, ensuring a robust and reliable connection. This keyslot (123) mechanism offers significant advantages over welding by eliminating the risks associated with weld failure, or breakage under stress.

As per another embodiment of the present invention, the non-return disk (119) being capable of supporting the non-keyslot end of the shaft (106), with the help of rubber stopper cap guide bush (117) and stopper bush (115) and reducing the rotational vibrations of the shaft (106).

As per detailed embodiment of the present invention, the non-return disk (119) being capable of supporting the non-keyslot end of the shaft (106). This support is achieved through the integration of a rubber stopper cap guide bush (117) and a stopper bush (115), both located after the outlet bowl (120). These components play a crucial role in securing the shaft (106), effectively mitigating rotational vibrations. The rubber stopper cap guide bush (117) and a stopper bush (115) work together to stabilize the shaft, maintaining its alignment along the central axis.

As per another embodiment of the present invention, the cable guard (122) being capable of protecting the electrical cables.

As per detailed embodiment of the present invention, the cable guard (122) is positioned to encase and secure the electrical cables, thereby shielding them from potential damage caused by external forces, which run along the length of the submersible pump

As per another embodiment of the present invention, the stopper cap (118) being capable of accommodating longer shaft (106).

As per detailed embodiment of the present invention, the stopper cap (118) is designed to accommodate longer shaft (106) if desired by the user or the desired application of the submersible pump with shaft protection (1000).

As per another embodiment of the present invention, the rubber guide bush bowl (112), the stopper nut (113), the stopper washer (114) being capable of supporting the shaft (106)

All the embodiments of the present invention further explained through drawings for the better understanding of the invention. Fig. 1 of the present invention illustrates the sectional view of the impeller (107) along with shaft (106), impeller sleeve (108)
And impeller sleeve nut (109). It also showcase the protrusion (110) and where it is within the impeller.

Fig. 2 of the present invention illustrates the exploded assembly view of the submersible pump with shaft protection (1000). The assembly showcases mounting frame (101), strainer (102), wear ring (103), connector bolt (104), connector sleeve (105), shaft (106), impeller (107), impeller sleeve (108), impeller sleeve nut (109), diffuser bowl (111), rubber guide bush bowl (112), stopper nut (113), stopper washer (114), stopper bush (115), stopper bowl (116), rubber stopper cap guide bush (117), stopper cap (118), non return disk (119), outlet bowl (120), locking strip (121), cable guard (122), keyslots (123).

Fig. 3 of the present invention illustrates the section view of the mounting frame (101), strainer (102), connector bolt (104), connector sleeve (105), shaft (106), impeller (107), impeller sleeve (108), impeller sleeve nut (109), protrusion (110) and diffuser bowl (111).

Fig. 4 of the present invention illustrates the internal cavity (124) along with the mounting frame (101), strainer (102), diffuser bowl (111) and the shaft (106). The plurality of internal cavity (124) showcased displays the plurality of supports that provides support to the plurality of locking strips (121).

Without further description, it is believed that one of ordinary skill in the art can, using the preceding description and the illustrative examples, make and utilize the present invention and practice the claimed methods. It should be understood that the foregoing discussion and examples merely present a detailed description of certain preferred embodiments. It will be apparent to those of ordinary skill in the art that various modifications and equivalents can be made without departing from the scope of the invention.

REFERENCE NUMERALS
Submersible pump with shaft protection (1000)
Mounting frame (101)
Strainer (102)
Wear Ring (103)
Connector bolt (104)
Connector sleeve (105)
Shaft (106)
Impeller (107)
Impeller sleeve (108)
Impeller sleeve nut (109)
Protrusion (110)
Diffuser Bowl (111)
Rubber Guide Bush Bowl (112)
Stopper Nut (113)
Stopper Washer (114)
Stopper Bush (115)
Stopper Bowl (116)
Rubber Stopper Cap Guide Bush (117)
Stopper Cap (118)
Non Return Disk (119)
Outlet Bowl (120)
Locking Strip (121)
Cable Guard (122)
Keyslots (123)
Internal cavity (124)
, Claims:CLAIMS
We Claims,
1. A submersible pump with shaft protection (1000) comprising a mounting frame (101), a strainer (102), a plurality of wear ring (103), a connector bolt (104), a connector sleeve (105), a shaft (106), a plurality of impeller (107), a plurality of impeller sleeve (108), a plurality of impeller sleeve nut (109), a protrusion (110), a plurality of diffuser bowl (111), a plurality of rubber stopper cap guide bush (112), a stopper nut (113), a stopper washer (114), a stopper bush (115), a stopper bowl (116), a rubber stopper cap guide bush (117), a stopper cap (118), a non-return disk (119), an outlet bowl (120), a plurality locking strip (121), cable guard (122), plurality of keyslot (123), plurality of internal cavity (124);
wherein
said impeller sleeve (108) and impeller sleeve nut (109) being capable of securing the impeller (107) on the shaft (106) via fastening; said protrusion (110) within the impeller (107) being capable of protecting the shaft from damage and keeping unwanted particles away hence prolonging the life cycle of the submersible pump.
2. The submersible pump with shaft protection (1000) as claimed in claim 1, wherein the plurality of locking strip (121) having a threaded portion on one end and a hook structure on the other end; said locking strip (121) is demountably attached to the mounting frame (101) via fastening and the hook structure securing the outlet bowl (120) by hooking on the cavity in its structure.
3. The submersible pump with shaft protection (1000) as claimed in claim 1, wherein the said mounting frame (101) having a plurality of internal cavity (124) to support the plurality of locking strip (121) and reduce the vibration of the assembly after fastening of the locking strip (121).
4. The submersible pump with shaft protection (1000) as claimed in claim 1, wherein the strainer (102) being capable of stopping debris in the water from reaching the internal components.
5. The submersible pump with shaft protection (1000) as claimed in claim 1, wherein the shaft (106) being capable of transferring rotational power via a motor to the submersible pump; said shaft (106) having a plurality of keyslot (123) on one end to engage with the motor shaft.
6. The submersible pump with shaft protection (1000) as claimed in claim 1, wherein the non-return disk (119) being capable of supporting the non-keyslot end of the shaft (106), with the help of rubber stopper cap guide bush (117) and stopper bush (115) and reducing the rotational vibrations of the shaft (106).
7. The submersible pump with shaft protection (1000) as claimed in claim 1, wherein the cable guard (122) being capable of protecting the electrical cables.

Dated this 23rd August of 2024