Claims:
I claims
1. Tangential edge disc filter consists with the stainless steel inner pipe (1), stainless steel inner perforated core (2), microfiber polypropylene discs (3), the solid stainless steel circle (4 & 5), BSP nut (6), multiple filter element (7)
Wherein stainless steel inner pipe (1) through which the clean fluid flows upward towards the filtered part where this pipe (1) has ¼” BSP threading on top & on the other side the pipe (1) is open to allow the fluid to pass through;
Wherein core (2) of which has 5mm diameter holes which allows the clean fluid to further pass through the microfiber discs (3) and the holes in the perforated inner core (2) help the compressed air in backwashing the carbon powder or catalyst from the microfiber disc (3);
Wherein the multiple number of microfiber polypropylene discs (3) are provided on entire heights of the pipe;
Wherein the solid stainless steel circle (4), which is welded at the bottom of the filter element which part becomes the base of the filter element and is fixed and the solid stainless steel circle (5) which is movable and which compresses the microfiber disc(3) in the filter element from the top with the help of BSP nut (6) which presses the solid stainless steel circle (5) towards the microfiber disc(3) and keeps the circle in tension so that the microfiber disc does not open up and doesn’t allow the carbon powder to pass.
2. Tangential edge disc filter as claimed in claim 1 wherein the multiple filter element (7) are fixed in the housing in an upside down manner.
3. Tangential edge disc filter as claimed in claim 1 wherein the inlet nozzle (8) to the filter housing through which the fluid with carbon powder comes in, the fluid with carbon particles enter the vessel and the vessel starts getting filled and the outlet nozzle (9) through which the clean fluid passes further to the clean tank and the nozzle (11) is an air release valve which removes the air from the vessel to completely fill with fluid.

4. Tangential edge disc filter as claimed in claim 1 wherein the nozzle (9) is opened and the clear fluid is transferred to other tank.

5. Tangential edge disc filter as claimed in claim 1 wherein the filtration batch is complete then nozzle (8) is closed and compressed air is passed through nozzle (11) and as compressed air is passed inside the vessel, the fluid in the unfiltered part starts getting filtered and goes ahead through nozzle (9).

6. Tangential edge disc filter as claimed in claim 1 wherein all the fluid is filtered, then nozzle (11) & nozzle (9) is closed and compressed air is passed through nozzle (10).

7. Tangential edge disc filter as claimed in claim 1 the compressed air starts flowing in, in the reverse direction the carbon powder is dislodged from the filter element and starts falling inside the vessel and then nozzle (12) is opened and the cake or carbon powder slurry is taken out of the filter vessel.

8. Tangential edge disc filter as claimed in claim 1 wherein filter element is fixed in a filter housing with of ¼” BSP threading connection.

9. Tangential edge disc filter as claimed in claim 1 wherein the vessel is completely filled with fluid then the filtration process starts and the carbon powder starts getting collected on the outer surface of the filter element and the clean fluid starts getting collected in the upper chamber through the filter element.

Dated this 21 Feb 2022
__________________
Nikhil Agarwal

To,
The Controller of Patents
The Patent Office, at Mumbai
, Description:FORM 2
THE PATENT ACT 1970
(39 of 1970)
&
The Patents Rules, 2003
COMPLETE SPECIFICATION
(See section 10 and rule 13)
1. TITLE OF THE INVENTION
Tangential edge disc filter

2. APPLICANT (S)
APPLICANT (S)
NAME NATIONALITY COUNTRY OF
RESIDENCE ADDRESS
Nikhil Agarwal INDIA INDIA 1401 VASUNDHARA HEIGHTS SECTOR 11 SANPADA NAVI MUMBAI -400705.

PREMABLE TO THE DESCRIPTION
The following specification particularly describes the nature of the invention and the manner in which it is to be performed.

Tangential edge disc filter
Field of the Invention
The present invention relates to Tangential edge disc filter. The invention was to develop a robust filter system which can filter out fine carbon powder and catalyst without the use of manual labor for back washing and cleaning. The invention can be used in many manufacturing industries, fabrication Industries, tool manufacturing Industries.

Background of the Invention
Filtration is a physical separation process that separates solid matter and fluid from a mixture using a filter medium that has a complex structure through which only the fluid can pass. Solid particles that cannot pass through the filter medium are described as oversize and the fluid that passes through is called the filtrate

There are filtration units which are used in tool manufacturing industries to separate the metal filing from cutting oil. The separation is very important as the oil has to be recirculated in the system. As these filter systems are made from cellulose fibers they can be only used in oil. When any kind of water solution or a mixture of water and oil is used then such oil filters swells and loose its integrity. Which is major drawback of the existing oil filter system.

There are basically two common methods to filter carbon & catalyst from solutions:
A. Sparkler filter:
In this method there are filter plates on which there is a filter cloth or filter pad as filtration media. The solution passes through the filter cloth or filter pad & comes out from the other side. Carbon & catalyst powder being so fine it gets passed even after using filter cloth or filter pad. So first they have to make a bed of Hyflo powder on the filter cloth and then once the bed is ready, they pass the solution. Even after making the Hyflo powder bed, when the carbon or catalyst solution is passed, it does not come clear from the first drop. They have to re-circulate the solution until they get a clear output. And once the output is clear, they stop the re-circulation and the filtered product is taken into a tank. In the whole process, a lot of time and energy is wasted. And once the batch is complete, then the Hyflo powder has to be thrown away & a new powder has to be added for the next batch. So in every batch, the Hyflo powder gets wasted and increase the manufacturing cost.

The main disadvantages of the Sparkler filter is as follow:
? Hyflo powder is used as a consumable in every batch.
? A single batch takes lots of energy and time to complete it.
? After the batch is completely filtered, the sparkler filter has to be manually opened and cleaned which again takes a lot man power and time

Another existing system is
B. Powdered Sinter filter elements:
The Stainless steel powdered sinter filter elements are used to filter carbon powder & catalyst from solutions. These filters are in the shape of cylinders and are made from Stainless Steel powder. Certain amount of powder is poured in a die and then it is heated in a furnace at a certain temperature and pressure. Then it forms a porous sintered filter element. This sintered filter element has a thickness of 3 to 3.5 mm, so a very fine sintered filter will give the clarity from the first drop itself. But the major disadvantage of this filter is that the carbon powder or catalyst which goes inside the depth of the filter element cannot be backwashed and the particles stuck in the 3-3.5 mm thickness depth cannot be cleaned and only the particles on the surface can be backwashed. Hence the filter elements has to be replaced quickly.

To overcome such limitation in the present invention the Tangential edge disc filter is used which has filter media of polypropylene microfiber filter disc.
Object of the invention
The main object of the present invention is that it is compatible with any fluid that is compatible with Polypropylene. Then let it be water, oil, solvents and other chemicals.
Further, the present invented filter element removes all the carbon and catalyst particles from the solution from the first drop itself which save time and energy cost.
The present invented filter system does not require any Hyflo powder bed to be made on the element to filter carbon powder or catalyst.
Further the clarity is achieved from the first drop so no need to re-circulate the solution. Even after complete filtration process is done no need to open the filter housing to remove the trapped carbon powder or catalyst.
Moreover in the present invention it does not require any consumable in the system like the filter cloth or filer pad or Hyflo powder.

In our system, all the carbon powder or catalyst are captured on the outer surface of the element, so the powder does not come into direct contact of the filter media, and hence the filter media does not get choked. Our filter can be completely cleaned so no need to replace them.

Statement of the Invention
The novel features of the present invention is that the filter element can attain a filtration efficiency of 2-3 microns and along with attaining such an efficiency, the elements can be backwashed. The filter element is made in such a way that the exact number of disc are used to make it. A slightly lower number of disc will make the carbon powder pass and a little higher number will make the filter so rigid that it will not let the liquid pass. The microfiber polypropylene discs are a perfect blend of sturdiness and porosity. The disc has the right porosity to allow the fluid to pass at the same time stopping the carbon powder or catalyst. The inventiveness of the element is such that it is first of its kind filter element which filters carbon powder or catalyst upto 99% without any help from Hyflo powder and at the same time it is completely back washable without dismantling the filter housing.

BRIEF DESCRIPTION OF THE DRAWINGS
The structure adopted by the present invention to achieve the above and other objects can be best understood by referring to the following detailed description of the preferred embodiments and the accompanying drawings,
Fig. 1 represents the assembly of the Present invented system
Fig.2 represents the filtration set up
Fig.3 represents the working diagramed of the present invention
Fig.4 represents the backwash flow Direction

Detailed description of the invention
Before explaining the present invention in detail, it is to be understood that the invention is not limited in its application to the details of the construction and arrangement of parts illustrated in the accompanying drawings. The invention is capable of other embodiments, as depicted in different figures as described above and of being practiced or carried out in a variety of ways. It is to be understood that the phraseology and terminology employed herein is for the purpose of description and not of limitation.
As shown in Fig.1 the present invention The filter element mainly consists of six parts which are mentioned in the drawing. These are:
The stainless steel inner pipe (1) of 13mm OD through which the clean fluid flows upward towards the filtered part. This pipe has ¼” BSP threading on top & on the other side the pipe is open to allow the fluid to pass through.
Then the stainless steel inner perforated core (2) of 21mm OD which has 5mm diameter holes which allows the clean fluid to further pass through the microfiber discs. Also the holes in the perforated inner core (2) help the compressed air in backwashing the carbon powder or catalyst from the microfiber disc. The microfiber polypropylene discs (3) of 55mm OD & 21mm ID. The GSM of the disc is 71 & the thickness is 0.21 mm. The total number of discs are 2765 in a 500 mm long element as per drawing Fig.1.
The solid stainless steel circle (4) of 55mm OD which is welded at the bottom of the filter element. This part becomes the base of the filter element and is fixed. The solid stainless steel circle (5) of 55mm OD which is movable and which compresses the microfiber disc in the filter element from the top with the help of BSP nut (6) which presses the solid stainless steel circle (5) towards the microfiber disc and keeps the circle in tension so that the microfiber disc does not open up and doesn’t allow the carbon powder to pass. Once the complete assembly is done, the filter element is ready to use. Then, this filter element as shown in Fig.1 is fixed in a filter housing with the help of ¼” BSP threading connection.

As shown in Fig.2 the multiple filter element (7) as constructed in Fig.1 are fixed in the housing in an upside down manner. The inlet nozzle (8) to the filter housing through which the fluid with carbon powder comes in. From it, the fluid with carbon particles enter the vessel and the vessel starts getting filled. The outlet nozzle(9) through which the clean fluid passes further to the clean tank. The nozzle (11) is an air release valve which removes the air in the vessel and helps the vessel to completely fill with fluid. Once the vessel is completely filled with fluid then the filtration process starts and the carbon powder starts getting collected on the outer surface of the filter element. The clean fluid starts getting collected in the upper chamber through the filter element. The nozzle (9) is opened and the clear fluid is transferred to other tank. Once the filtration batch is complete then nozzle (8) is closed and compressed air is passed through nozzle (11). As compressed air is passed inside the vessel, the fluid in the unfiltered part starts getting filtered and goes ahead through nozzle (9). In this way there is minimum hold up of fluid in the vessel and complete removal of fluid is possible. Once all the fluid is filtered, then nozzle (11) & nozzle (9) is closed and compressed air is passed through nozzle (10). As the compressed air starts flowing in, in the reverse direction the carbon powder is dislodged from the filter element and starts falling inside the vessel. Then nozzle (12) is opened and the cake or carbon powder slurry is taken out of the filter vessel. In this way the backwash is done as shown in Fig. 4 and all the carbon powder slurry is collected and once the whole slurry is collected then again the filtration starts as shown in Fig.3.

Summary of the invention:
The purpose of our invention was to develop a robust filter system which can filter out fine carbon powder and catalyst without the use of manual labor for back washing and cleaning, which save time and cost. By developing such a system in the present invention have solved a lot of problems which are faced by various industries such as
A) The whole system is under closed loop and thus there is complete human safety.
B) The whole system can be automated so no human labor.
C) Clean product is achieved by single pass.
D) No external Hyflo powder is required to pre coat on filters.
E) There are no filter consumables thus reducing environmental waste.

While, the invention has been described with respect to the given embodiment, it will be appreciated that many variations, modifications and other applications of the invention may be made. However, it is to be expressly understood that such modifications and adaptations are within the scope of the present invention, as set forth in the following claims.