Bag type filter not easy to block

Abstract

The utility model relates to the technical field of manufacturing and cleaning of semiconductor factories, in particular to a bag filter not easy to block, which comprises a hollow tank body, a liquid inlet is arranged on one side of the upper portion of the tank body, a liquid outlet is arranged on one side of the lower portion of the tank body far away from the liquid inlet, and a filter element is arranged in a channel enclosed by the tank body, the liquid inlet and the liquid outlet. A self-cleaning assembly is arranged in the filtering element and comprises a self-cleaning structure used for cleaning the filtering element and an air cylinder used for driving the self-cleaning structure to ascend and descend. When the self-cleaning filter element is used, the self-cleaning component is arranged in the filter element, and the self-cleaning structure is driven by the cylinder in the self-cleaning component to lift, so that impurities and particulate matters filtered on the surface of the inner wall of the filter element are cleaned by the self-cleaning structure, and the aim of prolonging the service life and cycle of a filter bag is fulfilled; the condition that the filtering efficiency of the filtering element is gradually reduced due to more and more particulate matters accumulated on the surface of the inner wall of the filtering element is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of semiconductor factory manufacturing and cleaning, in particular to a bag filter that is not easily clogged. Background Art

[0002] In modern industrial production, especially in areas with extremely high cleanliness requirements, such as integrated circuit manufacturing, electronic semiconductor processing, biopharmaceutical preparation, and fine chemicals, efficient and reliable liquid filtration technology is crucial. These industries have extremely stringent standards for the purity of raw materials, intermediates, and final products. The presence of any tiny solid particles or suspended matter can seriously affect product quality, even leading to production line downtime and product scrapping. Therefore, the development and application of high-efficiency filtration equipment has become a key link in ensuring production quality and improving production efficiency.

[0003] Bag filters, a mature and widely used liquid filtration device, hold a key position in these fields due to their ingenious design, compact structure, simple operation, and relatively low maintenance costs. These devices utilize specially crafted filter bags as their core filter element, leveraging the porous structure and dense fiber layers of the bag material to effectively intercept tiny solid particles and suspended solids in liquids. This physical interception method not only effectively removes impurities but also ensures that the filtration process does not chemically affect the liquid components, guaranteeing product purity and safety.

[0004] However, with the continuous expansion of production scale and the improvement of production efficiency, bag filters have gradually exposed some problems in practical application. First, the problem of filter bag clogging has become a key factor limiting filtration efficiency. Because the filter bag needs to continuously intercept solid particles in the liquid, a thick layer of particulate matter gradually accumulates on the filter bag surface over time, resulting in a decrease in the filter bag's porosity and an increase in filtration resistance, which in turn reduces filtration speed and increases energy consumption. In addition, clogged filter bags can easily cause excessive pressure differentials, causing unnecessary wear and tear on the equipment and shortening its service life.

[0005] In view of this, we propose a bag filter that is not easy to clog. Utility Model Content

[0006] The purpose of the present invention is to provide a bag filter that is not easily clogged, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] A bag filter that is not easy to clog includes a tank body, which is hollow. A liquid inlet is provided on one side of the upper part of the tank body, and a liquid outlet is provided on the side of the lower part of the tank body away from the liquid inlet. A filter element is provided in the channel enclosed by the tank body, the liquid inlet and the liquid outlet. A self-cleaning component is provided in the filter element. The self-cleaning component includes a self-cleaning structure for cleaning the filter element and a cylinder for driving the self-cleaning structure to rise and fall.

[0009] As a further solution of the present invention: a plurality of supporting legs are provided at one end of the tank body close to the liquid outlet, and a sealing cover is provided at the other end of the tank body.

[0010] As a further solution of the present invention: the cylinder is fixed to the side of the cover away from the filter element, and the output shaft of the cylinder passes through the cover and extends to the interior of the tank body and is fixed to the self-cleaning structure.

[0011] As a further solution of the present invention: the self-cleaning structure includes an extension rod with one end fixedly connected to the output shaft of the cylinder, and the other end of the extension rod is rotatably connected to a connecting block, the end of the connecting block away from the extension rod is fixedly connected to a driving rod, and the driving rod is slidably connected to a connecting disk, and the connecting disk is provided with a plurality of scrapers.

[0012] As a further solution of the present invention: a plurality of sliding grooves are provided on one side of the connecting plate close to the connecting block, the scraper is slidably connected to the sliding grooves, and the scraper is rotatably connected to the end of the connecting block away from the driving rod through a connecting rod.

[0013] As a further solution of the present invention: the connection disk is further provided with a plurality of flow holes for liquid circulation.

[0014] As a further solution of the present invention: the end of the driving rod away from the connecting block is rotatably connected to the vortex blade; the upper and lower ends of the driving rod are both provided with limit blocks for limiting the connecting disk.

[0015] As a further solution of the present invention: a dirt collecting chamber is provided at one end of the tank body close to the liquid outlet, the dirt collecting chamber is connected to a delivery pipe, and an electric control valve is provided at the pipe mouth of the delivery pipe.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] In this bag filter that is not easy to clog, a self-cleaning component is set in the filter element, and the cylinder in the self-cleaning component is used to drive the self-cleaning structure to rise and fall, so that the self-cleaning structure can clean up the impurities and particulate matter filtered on the inner wall surface of the filter element, thereby achieving the purpose of extending the service life and cycle of the filter bag, and avoiding the situation where the filtration efficiency of the filter element gradually decreases due to the increasing amount of particulate matter accumulated on the inner wall surface of the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of this scheme;

[0019] Figure 2 This is the overall structural cross-section of this scheme;

[0020] Figure 3 This is a schematic diagram of the tank, filter element and self-cleaning component structure of this solution;

[0021] Figure 4 Schematic diagram of the self-cleaning structure of this scheme;

[0022] Figure 5 for Figure 2 A in the enlarged view.

[0023] The meaning of each number in the figure is:

[0024] 100, tank body; 101, support legs; 102, cover;

[0025] 200. Liquid inlet; 201. Liquid outlet;

[0026] 300, filter element;

[0027] 400, self-cleaning assembly; 401, cylinder; 410, self-cleaning structure; 411, extension rod; 412, connecting block; 413, driving rod; 414, limit block; 415, connecting plate; 416, flow hole; 417, chute; 418, scraper; 419, connecting rod; 420, vortex blade;

[0028] 500, sewage collecting chamber; 501, delivery pipe; 502, electric control valve. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Example

[0031] like Figure 1 and Figure 2As shown, this embodiment provides a bag filter that is not easily clogged, including a tank body 100. The tank body 100 is hollow, and a liquid inlet 200 is opened on one side of the upper part of the tank body 100. A liquid outlet 201 is opened on the lower part of the tank body 100 away from the liquid inlet 200. A filter element 300 is provided in the channel enclosed by the tank body 100, the liquid inlet 200 and the liquid outlet 201. Liquid enters the tank body 100 through the liquid inlet 200 and enters the interior of the filter element 300. The particulate matter in the liquid is filtered by the filter element 300, and the filtered liquid is discharged through the liquid outlet 201.

[0032] Taking into account that the filter element 300 needs to continuously intercept solid particles in the liquid, a thick layer of particulate matter will gradually accumulate on the surface of the filter bag over time, resulting in a decrease in the pores of the filter bag and an increase in the filtration resistance, thereby reducing the filtration speed and increasing energy consumption. Therefore, a self-cleaning component 400 is provided in the filter element 300. The self-cleaning component 400 includes a self-cleaning structure 410 for cleaning the filter element 300 and a cylinder 401 for driving the self-cleaning structure 410 to rise and fall.

[0033] The improvement of this embodiment lies in that a self-cleaning component 400 is set in the filter element 300, and the cylinder 401 in the self-cleaning component 400 is used to drive the self-cleaning structure 410 to rise and fall, so that the self-cleaning structure 410 can clean up the impurities and particulate matter filtered on the inner wall surface of the filter element 300, thereby achieving the purpose of extending the service life and cycle of the filter element 300, and avoiding the situation where the filtration efficiency of the filter element 300 gradually decreases due to the increasing amount of particulate matter accumulated on the inner wall surface of the filter element 300.

[0034] It should be further explained that a plurality of supporting legs 101 are provided at one end of the tank body 100 close to the liquid outlet 201 , and the supporting legs 101 are used to support the tank body 100 . A sealing cover 102 is provided at the other end of the tank body 100 .

[0035] The installation position of the cylinder 401 is disclosed. The cylinder 401 is fixed to the side of the cover 102 away from the filter element 300. The output shaft of the cylinder 401 passes through the cover 102 and extends to the interior of the tank 100 and is fixed to the self-cleaning structure 410.

[0036] like Figure 3 、 Figure 4 and Figure 5As shown, the self-cleaning structure 410 is disclosed. The self-cleaning structure 410 includes an extension rod 411 fixedly connected to the output shaft of the cylinder 401 at one end, and a connecting block 412 is rotatably connected to the other end of the extension rod 411. The connecting block 412 is fixedly connected to the end away from the extension rod 411 with a driving rod 413. The driving rod 413 is slidably connected to a connecting disk 415. The connecting disk 415 is provided with a plurality of scrapers 418. The scrapers 418 are made of hard plastic or hard rubber and other materials. When the inner wall of the filter element 300 is filled with water, the scrapers 418 are used. The air cylinder 401 drives the connecting plate 415 to move up and down, thereby driving the scraper 418 to move up and down. During the descent of the scraper 418, the scraper 418 will contact the filter element 300 and scrape off the particles on the filter element 300, and drive the particles to move downward. After the scraper 418 moves to the bottom, the scraper 418 stops moving, and the particles continue to move downward under the action of inertia, thereby moving the particles to the bottom of the tank body 100.

[0037] Considering that when the scraper 418 rises, if the scraper 418 is still in contact with the filter element 300, it will drive the particles to rise, which is likely to cause the particles to accumulate on the connecting plate 415, resulting in incomplete cleaning of the particles. Therefore, a plurality of sliding grooves 417 are provided on the side of the connecting plate 415 close to the connecting block 412, and the scraper 418 is slidably connected to the sliding grooves 417. The scraper 418 and the connecting block 412 are rotatably connected to the end away from the driving rod 413 by the connecting rod 419. The upper and lower ends of the driving rod 413 are provided with limit blocks 414 for limiting the connection plate 415. During the process of the scraper 418 descending, due to the resistance of the liquid water, the connection plate 415 moves to The limit block 414 is close to one end of the connecting block 412. At this time, under the linkage of the connecting rod 419 and the connecting disk 415, the scraper 418 is deployed toward the outside of the connecting disk 415 in the chute 417; and when the scraper 418 rises, the connecting disk 415 moves to the limit block 414 away from one end of the connecting block 412 due to the resistance of the liquid water. At this time, under the linkage of the connecting rod 419 and the connecting disk 415, the scraper 418 is retracted toward the inside of the connecting disk 415 in the chute 417. At this time, the scraper 418 will not contact the filter element 300, preventing the scraper 418 from pushing the particles upward and preventing the particles from being pushed onto the connecting disk 415, thereby ensuring the cleaning effect of the particles.

[0038] In addition, to improve the cleaning effect of the filter element 300, the connecting disk 415 is further provided with a plurality of flow holes 416 for liquid circulation; the end of the driving rod 413 away from the connecting block 412 is rotatably connected to the vortex blade 420; when the vortex blade 420 moves up and down with the connecting disk 415, relative movement occurs between the vortex blade 420 and the water inside the filter element 300, thereby causing the vortex blade 420 to rotate, which in turn drives the connecting disk 415 to rotate, thereby continuously changing the position of the scraper 418, so that the scraper 418 can evenly clean the entire filter element 300;

[0039] In order to facilitate the processing of the particulate matter pushed to the bottom of the tank body 100 by the scraper 418, a sewage collecting chamber 500 is provided at one end of the tank body 100 near the liquid outlet 201. The sewage collecting chamber 500 is connected to a delivery pipe 501. An electric control valve 502 is provided at the mouth of the delivery pipe 501. When a large amount of particulate matter accumulates in the sewage collecting chamber 500, the electric control valve 502 can be opened to drive the particulate matter to flow out of the delivery pipe 501 under the water pressure inside the tank body 100.

[0040] In summary, the working principle of this solution is as follows:

[0041] The liquid enters the tank body 100 through the liquid inlet 200 and enters the interior of the filter element 300 , where the particulate matter in the liquid is filtered by the filter element 300 , and the filtered liquid is discharged through the liquid outlet 201 . When the filter element 300 is cleaned, the cylinder 401 drives the connecting plate 415 to move up and down, which can drive the scraper 418 to move up and down. When the cylinder 401 drives the driving rod 413 to move downward, the connection plate 415 moves to the limit block 414 near one end of the connection block 412 due to the resistance of the liquid water. At this time, under the linkage of the connecting rod 419 and the connecting plate 415, the scraper 418 is expanded to the outside of the connection plate 415 in the slide groove 417, so that the scraper 418 contacts the filter element 300, thereby driving multiple scrapers 418 to move downward to scrape the particles on the filter element 300. When the cylinder 401 drives the driving rod 413 to rise, the connection plate 415 moves to the limit block 414 away from one end of the connection block 412 due to the resistance of the liquid water. At this time, under the linkage of the connecting rod 419 and the connecting plate 415 Under the action of the pull rod 413, the scraper 418 shrinks toward the inside of the connecting plate 415 in the slide groove 417. At this time, the scraper 418 will not contact the filter element 300. In the process of lifting and lowering the driving rod 413, the vortex blade 420 moves up and down with the connecting plate 415. There will be relative movement between the vortex blade 420 and the water inside the filter element 300, so that the vortex blade 420 can rotate, and then drive the connecting plate 415 to rotate, so as to continuously change the position of the scraper 418, so that the scraper 418 can evenly clean the entire filter element 300. The particles pushed to the bottom of the tank body 100 by the scraper 418 will enter the sewage collecting chamber 500. When a large amount of particles are accumulated in the sewage collecting chamber 500, opening the electric control valve 502 can drive the particles to flow out of the delivery pipe 501 under the water pressure inside the tank body 100.

[0042] Although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0043] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent modifications made according to the scope of the claims of the present application are within the scope of protection of the claims of the present application.

Claims

1. A bag filter that is not easy to clog, comprising a tank body (100), wherein the tank body (100) is hollow, a liquid inlet (200) is provided on one side of the upper portion of the tank body (100), a liquid outlet (201) is provided on a side of the lower portion of the tank body (100) away from the liquid inlet (200), and a filter element (300) is provided in a channel enclosed by the tank body (100), the liquid inlet (200) and the liquid outlet (201), wherein the filter element (300) is provided, and the filter element (300) is characterized in that: A self-cleaning assembly (400) is provided in the filter element (300), and the self-cleaning assembly (400) comprises a self-cleaning structure (410) for cleaning the filter element (300) and a cylinder (401) for driving the self-cleaning structure (410) to move up and down.

2. The non-clogging bag filter according to claim 1, characterized in that: A plurality of supporting legs (101) are provided at one end of the tank body (100) close to the liquid outlet (201), and a sealing cover (102) is provided at the other end of the tank body (100).

3. The non-clogging bag filter according to claim 2, characterized in that: The cylinder (401) is fixed to the side of the cover (102) away from the filter element (300), and the output shaft of the cylinder (401) passes through the cover (102) and extends to the interior of the tank body (100) and is fixed to the self-cleaning structure (410).

4. The non-clogging bag filter according to claim 1, characterized in that: The self-cleaning structure (410) comprises an extension rod (411) having one end fixedly connected to the output shaft of the cylinder (401); the other end of the extension rod (411) is rotatably connected to a connecting block (412); the end of the connecting block (412) away from the extension rod (411) is fixedly connected to a driving rod (413); the driving rod (413) is slidably connected to a connecting disk (415); and the connecting disk (415) is provided with a plurality of scrapers (418).

5. The non-clogging bag filter according to claim 4, characterized in that: The connecting plate (415) is provided with a plurality of sliding grooves (417) on one side close to the connecting block (412), the scraper (418) is slidably connected to the sliding grooves (417), and the scraper (418) is rotatably connected to the end of the connecting block (412) away from the driving rod (413) by a connecting rod (419).

6. The non-clogging bag filter according to claim 4, characterized in that: The connecting plate (415) is further provided with a plurality of circulation holes (416) for liquid circulation.

7. The non-clogging bag filter according to claim 4, characterized in that: One end of the driving rod (413) away from the connecting block (412) is rotatably connected to a vortex blade (420); upper and lower ends of the driving rod (413) are both provided with limiting blocks (414) for limiting the connecting disk (415).

8. The non-clogging bag filter according to claim 1, characterized in that: The tank body (100) is close to A dirt collecting chamber (500) is provided at one end near the liquid outlet (201), and the dirt collecting chamber (500) is connected to a delivery pipe (501). An electrically controlled valve (502) is provided at the pipe mouth of the delivery pipe (501).

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