Double filter

Abstract

The utility model discloses a double filter, including a filter tank, the bottom surface of the filter tank is vertically fixed with a support leg, the top surface of the filter tank is connected to a cover plate by a first bolt, the outside of the filter tank is horizontally connected to a feed pipe and a discharge pipe, the feed pipe is radially symmetrical with the discharge pipe, and the height of the feed pipe is greater than the height of the discharge pipe, a filter frame is arranged in the filter tank, and a plurality of permanent magnetic bars distributed in an equidistant ring are vertically fixed on the bottom surface of the cover plate. The utility model sets a filter frame in the filter tank and vertically fixes a plurality of permanent magnetic bars on the bottom surface of the cover plate, so that the filter can simultaneously filter metal impurities and other non-metallic impurities in the material entering the filter tank, without installing another filter on the production line, thereby reducing equipment costs.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to a double filter. Background Art

[0002] In the production of lithium-ion batteries, the negative electrode of the battery requires a coating material of negative graphite powder. Among the inspection indicators of the negative graphite powder product standard, the more strictly controlled items are: ash content ≤ 0.5% and magnetic content ≤ 1ppm. The process control route for these two indicators is to set a basket filter for impurity removal in the pipelines of raw oil and intermediate oil in the production process of negative graphite powder, and set a magnetic filter behind the basket filter to achieve the purpose of removing harmful substances in the product.

[0003] Therefore, in order to remove impurities and magnetic substances from the material, it is necessary to lengthen the process pipeline on the production line. However, if the length of the process pipeline is too long, it will easily lead to high investment costs for equipment and pipelines. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a double filter.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a double filter, including a filter tank, the bottom surface of the filter tank is vertically fixed with a support leg, the top surface of the filter tank is connected to a cover plate by a first bolt, the outside of the filter tank is horizontally connected to a feed pipe and a discharge pipe, the feed pipe is radially symmetrical with the discharge pipe, and the height of the feed pipe is greater than the height of the discharge pipe, a filter frame is provided in the filter tank, and a plurality of permanent magnet bars equidistantly distributed in an annular manner are vertically fixed to the bottom surface of the cover plate.

[0006] As a further description of the above technical solution: a plurality of equally spaced blind holes are axially opened on the bottom surface of the filter tank, a spring is fixed in each of the blind holes, a top block is fixed at the end of each spring, the top block is axially slidably connected in the blind hole, and the top surface of the top block abuts against the bottom surface of the filter frame, and a plurality of equally spaced annular support rods are provided on the bottom surface of the cover plate, and each of the support rods abuts against the top surface of the filter frame.

[0007] As a further description of the above technical solution: two mirror-symmetrical first sliding grooves are axially opened on the inner wall of the blind hole, and a first sliding block is slidably connected in each of the first sliding grooves, and the first sliding block is fixedly connected to the top block.

[0008] As a further description of the above technical solution: the bottom surface of the cover plate is attached to the support plate, the support rod is vertically fixed to the bottom surface of the support plate, the top surface of the support plate axially penetrates a plurality of sleeve holes adapted to the permanent magnet rods, each of the sleeve holes is axially penetrated by a permanent magnet rod, and a sleeve is axially sleeved on the outside of each permanent magnet rod, the sleeve is fixedly connected to the support plate, the support plate is connected to the cover plate by fasteners, and the support plate and the sleeve are both made of plastic.

[0009] As a further description of the above technical solution: the fastener includes a guide ring axially slidably connected to the support plate, the support plate axially passes through a guide hole, two second sliding grooves axially opened in the guide hole are mirror-symmetrical, a second slider is slidably connected in each of the second sliding grooves, the second slider is fixedly connected to the guide ring, a second bolt is rotatably connected in the guide ring, one end of the second bolt abuts against the bottom surface of the support plate, a thread groove is axially opened in the bottom surface of the cover plate, the end of the second bolt extends into the thread groove and is threadedly connected in the thread groove.

[0010] As a further description of the above technical solution: a support ring is fixedly sleeved on the outer upper opening of the filter tank, the top surface of the support ring axially penetrates a plurality of first through holes distributed at equal distances, the top surface of the cover plate vertically penetrates a plurality of second through holes adapted to the first through holes, the first bolt is sleeved in the first through hole and the second through hole, and a nut is sleeved on the external thread of the first bolt, the nut abuts against the bottom surface of the support ring, an annular groove is axially opened on the top surface of the filter tank, a sealing ring made of rubber is provided in the annular groove, and the sealing ring is fixed to the bottom surface of the cover plate.

[0011] The utility model has the following beneficial effects:

[0012] 1. Compared with the prior art, the double filter, by setting a filter frame in the filter tank and vertically fixing multiple permanent magnetic bars on the bottom surface of the cover plate, enables the filter to simultaneously filter metal impurities and other non-metallic impurities in the material entering the filter tank, without the need to install another filter on the production line, thereby reducing equipment costs;

[0013] 2. Compared with the prior art, the double filter connects multiple top blocks by axially telescoping on the bottom surface of the filter tank, so that after the cover plate is opened, the spring in a compressed state pushes the top block out of the blind hole, and the top block pushes the filter tank in the filter tank upward, so that it is convenient to take out the filter frame from the filter tank for cleaning, avoiding the accumulation of excessive impurities in the filter frame, increasing the weight of the filter frame, and causing the filter frame to be unable to be taken out smoothly by hand;

[0014] 3. Compared with the prior art, the double filter, by sleeved with a plastic sleeve on the outside of each permanent magnet rod, makes the metal particles adsorbed by the permanent magnet rod adhere to the outside of the sleeve, and the metal particles are cleaned by removing the sleeve from the permanent magnet rod, thereby preventing the metal particles from sticking to the permanent magnet rod and being unable to be completely cleaned. Multiple sleeves are fixed together on a support plate, and the support plate is installed on the bottom surface of the cover plate through fasteners, so that the sleeves can be removed and cleaned at one time, and the installation and disassembly of the sleeves are also convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional diagram of the overall structure of the double filter proposed by the utility model;

[0016] Figure 2 It is a side cross-sectional view of the overall structure of the double filter proposed in the utility model;

[0017] Figure 3 The double filter proposed by the utility model Figure 2 A magnified view of the structure at center A;

[0018] Figure 4 The double filter proposed by the utility model Figure 2 A magnified view of the structure at B in the middle;

[0019] Figure 5 The double filter proposed by the utility model Figure 3 Enlarged view of the structure at C in the middle.

[0020] Legend:

[0021] 1. Filter tank; 2. Nut; 3. Support ring; 4. Feed pipe; 5. First bolt; 6. Cover plate; 7. Discharge pipe; 8. Support leg; 9. Filter frame; 10. Casing; 11. Support plate; 12. Permanent magnet rod; 13. Casing hole; 14. Second bolt; 15. Annular groove; 16. Sealing ring; 17. Top block; 18. First slide groove; 19. First slider; 20. Blind hole; 21. Spring; 22. Threaded groove; 23. Guide ring; 24. Second slider; 25. Second slide groove; 26. Guide hole; 100. Support rod. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Reference Figures 1 to 5 The double filter provided by the utility model comprises a filter tank 1, a support leg 8 is vertically fixed on the bottom surface of the filter tank 1, a cover plate 6 is connected to the top surface of the filter tank 1 through a first bolt 5, the outside of the filter tank 1 is horizontally connected to a feed pipe 4 and a discharge pipe 7, the feed pipe 4 and the discharge pipe 7 are radially symmetrical, and the height of the feed pipe 4 is greater than the height of the discharge pipe 7, a filter frame 9 is arranged in the filter tank 1, a plurality of permanent magnetic bars 12 with equal distances and annular distribution are vertically fixed on the bottom surface of the cover plate 6, a support ring 3 is fixedly sleeved on the outer upper opening of the filter tank 1, a plurality of first through holes with equal distances are axially penetrated on the top surface of the support ring 3, a plurality of second through holes adapted to the first through holes are vertically penetrated on the top surface of the cover plate 6, a first bolt 5 is sleeved in the first through hole and the second through hole, and a nut 2 is sleeved on the outer thread of the first bolt 5, and the nut 2 abuts against the bottom surface of the support ring 3, an annular groove 15 is axially provided on the top surface of the filter tank 1, a sealing ring 16 made of rubber material is arranged in the annular groove 15, and the sealing ring 16 is fixed to the bottom surface of the cover plate 6;

[0024] By arranging a filter frame 9 in the filter tank 1 and vertically fixing a plurality of permanent magnetic bars 12 on the bottom surface of the cover plate 6, the filter can simultaneously filter metal impurities and other non-metallic impurities in the material entering the filter tank 1, without installing another filter on the production line, thereby reducing equipment costs;

[0025] Reference Figure 2 and Figure 4 In order to facilitate the removal of the filter frame 9 from the filter tank 1, a plurality of equally spaced blind holes 20 are axially provided on the bottom surface of the filter tank 1, a spring 21 is fixed in each blind hole 20, a top block 17 is fixed at the end of each spring 21, the top block 17 is axially slidably connected in the blind hole 20, and the top surface of the top block 17 abuts against the bottom surface of the filter frame 9, two mirror-symmetrical first slide grooves 18 are axially provided on the inner wall of the blind hole 20, a first slider 19 is slidably connected in each first slide groove 18, and the first slider 19 is fixedly connected to the top block 17, and a plurality of equally spaced annular support rods 100 are provided on the bottom surface of the cover plate 6, and each support rod 100 abuts against the top surface of the filter frame 9;

[0026] By axially telescopically connecting a plurality of top blocks 17 on the bottom surface of the filter tank 1, after the cover plate 6 is opened, the spring 21 in a compressed state pushes the top block 17 out of the blind hole 20, and the top block 17 pushes the filter tank 1 inside the filter tank 1 upward, so as to facilitate the removal of the filter frame 9 from the filter tank 1 for cleaning, and avoid the accumulation of excessive impurities in the filter frame 9, which increases the weight of the filter frame 9 and makes it impossible to smoothly remove the filter frame 9 by hand;

[0027] Reference Figure 2 , Figure 3 and Figure 5In order to facilitate the cleaning of metal impurities adsorbed on the permanent magnet rod 12, the bottom surface of the cover plate 6 is attached to the support plate 11, the support rod 100 is vertically fixed to the bottom surface of the support plate 11, and the top surface of the support plate 11 axially penetrates a plurality of sleeve holes 13 adapted to the permanent magnet rod 12, each sleeve hole 13 axially penetrates a permanent magnet rod 12, and each permanent magnet rod 12 is axially sleeved with a sleeve 10 on the outside, and the sleeve 10 is fixedly connected to the support plate 11, and the support plate 11 is connected to the cover plate 6 by fasteners, and the support plate 11 and the sleeve 10 are both made of plastic;

[0028] The fastener includes a guide ring 23 axially slidably connected to the support plate 11, the support plate 11 axially passes through a guide hole 26, two mirror-symmetrical second slide grooves 25 are axially provided in the guide hole 26, a second slider 24 is slidably connected in each second slide groove 25, the second slider 24 is fixedly connected to the guide ring 23, a second bolt 14 is rotatably connected in the guide ring 23, one end of the second bolt 14 abuts against the bottom surface of the support plate 11, a thread groove 22 is axially provided on the bottom surface of the cover plate 6, the end of the second bolt 14 extends into the thread groove 22 and is threadedly connected in the thread groove 22

[0029] By sleeved a plastic sleeve 10 on the outside of each permanent magnet rod 12, the metal particles adsorbed by the permanent magnet rod 12 are attached to the outside of the sleeve 10, and the metal particles are cleaned by removing the sleeve 10 from the permanent magnet rod 12, thereby preventing the metal particles from sticking to the permanent magnet rod 12 and being unable to be completely cleaned. Multiple sleeves 10 are fixed together on a support plate 11, and the support plate 11 is installed on the bottom surface of the cover plate 6 through fasteners, so that the sleeve 10 can be removed and cleaned at one time, and the installation and disassembly of the sleeve 10 is also convenient.

[0030] Working principle: When in use, the material to be filtered enters the filter frame 9 in the filter tank 1 through the feed pipe 4, and the impurities in the material are filtered, and the permanent magnetic rod 12 adsorbs the metal particles in the material on the outside of the sleeve 10. The material filtered by the permanent magnetic rod 12 and the filter frame 9 will be discharged through the discharge pipe 7. When the inside of the filter tank 1 needs to be cleaned after a period of use, the nut 2 is first removed, and then each first bolt 5 is removed from the cover plate 6, and then the cover plate 6 is removed from the filter tank 1. When the cover plate 6 is removed, the support rod 100 is separated from the top surface of the filter frame 9, and the spring 21 in the compressed state in the filter tank 1 will be reset. When the spring 21 is reset, the top block 17 located in the blind hole 20 is pushed upward, and the top block 17 pushes the filter frame 9 upward, and then the filter frame 9 is taken out of the filter tank 1 for cleaning. When cleaning the metal particles adsorbed on the permanent magnetic rod 12, first loosen each second bolt 14 to disengage the bolt from the thread groove 22 in the cover plate 6, and then pull the support plate 11 to release all the second bolts 14. The sleeve 10 is removed from the permanent magnet rod 12. When the sleeve 10 is separated from the permanent magnet rod 12, the metal particles adsorbed on the outside of the sleeve 10 will be separated from the sleeve 10 by themselves under the effect of the disappearance of the magnetic force. Then the sleeve 10 is further cleaned. After the cleaning is completed, the sleeve 10 is aligned with each permanent magnet rod 12 and sleeved on the outside of the permanent magnet rod 12. At the same time, the support plate 11 is fitted with the inside of the cover plate 6, and then the second bolt 14 is rotated so that the end of the second bolt 14 is rotated into the thread groove 22, and then the cleaning is completed. The good filter frame 9 is put into the filter tank 1, and then the cover plate 6 is covered on the top surface of the filter tank 1. The support rod 100 on the bottom surface of the cover plate 6 will abut against the top surface of the filter frame 9, and the support rod 100 will abut against the filter frame 9 to descend, so that the filter frame 9 presses the top block 17 into the blind hole 20, and the spring 21 in the blind hole 20 is compressed, so that the bottom surface of the cover plate 6 fits with the top surface of the filter tank 1, and the sealing ring 16 is inserted into the annular groove 15 on the filter tank 1, and then the first bolt 5 and the nut 2 are used to seal and fix the cover plate 6 and the filter tank 1.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A double filter, comprising a filter tank (1), the bottom surface of which is vertically fixed with a support leg (8), and the top surface of which is connected to a cover plate (6) via a first bolt (5), characterized in that: The outside of the filter tank (1) is horizontally connected to a feed pipe (4) and a discharge pipe (7), respectively; the feed pipe (4) is radially symmetrical with the discharge pipe (7), and the height of the feed pipe (4) is greater than the height of the discharge pipe (7); a filter frame (9) is provided inside the filter tank (1), and a plurality of equidistant annularly distributed permanent magnet bars (12) are vertically fixed to the bottom surface of the cover plate (6).

2. The double filter according to claim 1, characterized in that: The bottom surface of the filter tank (1) is provided with a plurality of blind holes (20) which are equidistantly distributed axially, a spring (21) is fixed in each of the blind holes (20), a top block (17) is fixed at the end of each of the springs (21), the top block (17) is axially slidably connected in the blind hole (20), and the top surface of the top block (17) abuts against the bottom surface of the filter frame (9), and the bottom surface of the cover plate (6) is provided with a plurality of support rods (100) which are equidistantly distributed in an annular manner, and each of the support rods (100) abuts against the top surface of the filter frame (9).

3. The double filter according to claim 2, characterized in that: Two mirror-symmetrical first sliding grooves (18) are axially formed on the inner wall of the blind hole (20), and a first sliding block (19) is slidably connected in each of the first sliding grooves (18), and the first sliding block (19) is fixedly connected to the top block (17).

4. The double filter according to claim 2, characterized in that: The bottom surface of the cover plate (6) fits the support plate (11), the support rod (100) is vertically fixed to the bottom surface of the support plate (11), the top surface of the support plate (11) axially penetrates a plurality of sleeve holes (13) adapted to the permanent magnet rods (12), each of the sleeve holes (13) axially penetrates a permanent magnet rod (12), the outside of each permanent magnet rod (12) is axially sleeved with a sleeve (10), the sleeve (10) is fixedly connected to the support plate (11), the support plate (11) is connected to the cover plate (6) via a fastener, and the support plate (11) and the sleeve (10) are both made of plastic.

5. The double filter according to claim 4, characterized in that: The fastener comprises a guide ring (23) axially slidably connected to the support plate (11); the support plate (11) axially passes through a guide hole (26); two second sliding grooves (25) axially arranged in mirror symmetry are arranged in the guide hole (26); a second slider (24) is slidably connected in each of the second sliding grooves (25); the second slider (24) is fixedly connected to the guide ring (23); a second bolt (14) is rotatably connected in the guide ring (23); one end of the second bolt (14) abuts against the bottom surface of the support plate (11); a thread groove (22) is axially arranged in the bottom surface of the cover plate (6); the end of the second bolt (14) extends into the thread groove (22) and is threadedly connected in the thread groove (22).

6. The dual filter according to claim 1, characterized in that: A support ring (3) is fixedly sleeved on the outer upper opening of the filter tank (1), and a plurality of first through holes equidistantly distributed are axially penetrated through the top surface of the support ring (3). A plurality of second through holes matching the first through holes are vertically penetrated through the top surface of the cover plate (6). The first bolt (5) is sleeved in the first through hole and the second through hole, and a nut (2) is sleeved on the outer thread of the first bolt (5), and the nut (2) abuts against the bottom surface of the support ring (3). An annular groove (15) is axially provided on the top surface of the filter tank (1), and a sealing ring (16) made of rubber is provided in the annular groove (15). The sealing ring (16) is fixed to the bottom surface of the cover plate (6).

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