Diluted acid filter

Abstract

The utility model belongs to the technical field of table vinegar production, and relates to a dilute acid filter which comprises a bottom plate, a filter cartridge is arranged at the top end of the bottom plate, the filter cartridge is fixedly connected with the bottom plate through a support frame, a feed port is fixed at the top end of the filter cartridge, a drain outlet is fixed at the lower end of one side of the filter cartridge, and a valve is arranged at one end of the drain outlet. Through the structural design of the filtering assembly, waste residue particles in liquid to be filtered can be intercepted and filtered, then the waste residue particles are discharged from the inner side of the filtering cylinder through the connecting pipe and the discharging port, and when the filtering assembly needs to be cleaned, the discharging port can be connected with an external high-pressure water pump; waste residue particles in the filter assembly are reversely washed through high-pressure water flow, and then waste liquid is discharged outwards through a sewage draining exit, so that the filter assembly can be cleaned without detaching, cleaning or replacing a filter screen and filter cloth, the working steps are reduced, and the practicability of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of vinegar production, and relates to a dilute acid filter. BACKGROUND

[0002] In the production process of vinegar, filtering dilute acid in vinegar brewing is one of the indispensable links in production, and dilute acid filters are usually used for filtering dilute acid.

[0003] A dilute acid filter is a device specially used in vinegar production to filter dilute acid solution. Its main purpose is to remove impurities such as suspended solids, precipitates and bacteria in dilute acid to improve the purity and clarity of vinegar liquid and ensure the quality of the final product.

[0004] When the above technology is used, it is found that the existing filter device has the following technical problems: the filter screen needs to be disassembled and cleaned regularly or the filter cloth needs to be replaced during long-term use, but the filter screen or filter cloth is arranged in the interior of the filter cartridge, the disassembly step is cumbersome, the operation is relatively inconvenient, and when the filter screen is cleaned later, the impurities and acid-containing sewage in the filter screen are directly discharged, which can cause great harm to the environment and is inconvenient to handle. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problem that the existing filter device needs to be disassembled and cleaned regularly or the filter cloth needs to be replaced during long-term use, but the filter screen or filter cloth is arranged in the interior of the filter cartridge, the disassembly step is cumbersome, the operation is relatively inconvenient, and when the filter screen is cleaned later, the impurities and acid-containing sewage in the filter screen are directly discharged, which can cause great harm to the environment and is inconvenient to handle.

[0006] The dilute acid filter comprises a bottom plate, a filter cartridge is arranged at the top end of the bottom plate, the filter cartridge is fixedly connected with the bottom plate through a support frame, a feeding port is fixedly arranged at the top end of the filter cartridge, a sewage discharge port is fixedly arranged at the lower end of one side of the filter cartridge, a valve is arranged at one end of the sewage discharge port, a discharging port is fixedly arranged at the lower end of the filter cartridge, a connecting pipe is fixedly arranged at one end of the discharging port close to the filter cartridge, the connecting pipe extends to the inner side of the filter cartridge, a filter assembly is arranged at the position corresponding to the connecting pipe on the inner side of the filter cartridge, and the filter assembly is used for filtering dilute acid, a waste residue treatment assembly is arranged at the end of the sewage discharge port away from the filter cartridge, and the waste residue treatment assembly is used for treating waste residues in the waste liquid discharged from the interior of the filter cartridge.

[0007] The filtering assembly comprises a fixing frame arranged at the middle position of the inner side of the filtering cylinder, a plurality of filtering discs are sleeved outside the fixing frame, a plurality of filtering grooves are uniformly arranged at the upper and lower ends of the filtering discs, a connecting column is fixed at the top end of the fixing frame, a fixing plate is fixed at the top end of the connecting column, the fixing plate is fixedly connected with the filtering cylinder, a limiting assembly is arranged at the position below the fixing plate and between the fixing plate and the filtering discs, and the limiting assembly is used for limiting the filtering discs.

[0008] The limiting assembly comprises a pressing limiting plate arranged outside the connecting column and above the filtering discs, the pressing limiting plate is slidably connected with the connecting column, a plurality of telescopic rods are uniformly arranged at the position between the pressing limiting plate and the fixing plate, the fixed end of the telescopic rod is fixedly connected with the fixing plate, the telescopic end of the telescopic rod is fixedly connected with the pressing limiting plate, a pressing spring is sleeved outside the telescopic rod, one end of the pressing spring is fixedly connected with the fixing plate, and the other end of the pressing spring is fixedly connected with the pressing limiting plate.

[0009] The waste residue treatment assembly comprises a waste residue treatment box arranged at the position of the pollution discharge port away from the filtering cylinder, a liquid inlet is connected to one side of the pollution discharge port, the liquid inlet is communicated with the waste residue treatment box, an extrusion cavity is arranged at the position inside the waste residue treatment box and corresponding to the liquid inlet, a liquid outlet is fixed at the lower end of the other side of the waste residue treatment box, a filter plate is fixed at the inner side of the end of the liquid outlet close to the extrusion cavity, an extrusion assembly is arranged at the position above the extrusion cavity, and a collecting assembly is arranged at the position below the extrusion cavity.

[0010] The extrusion assembly comprises an extrusion rod vertically arranged at the position inside the waste residue treatment box and corresponding to the extrusion cavity, the extrusion rod is slidably connected with the waste residue treatment box, the top end of the extrusion rod extends to the outer side of the top end of the waste residue treatment box, the lower end of the extrusion rod extends to the inner side of the extrusion cavity, an extrusion plate is fixed at the lower end of the extrusion rod, the extrusion plate is slidably connected with the waste residue treatment box, a contact block is fixed at the top end of the extrusion rod, a telescopic spring is sleeved outside the extrusion rod, one end of the telescopic spring is fixedly connected with the contact block, and the other end of the telescopic spring is fixedly connected with the waste residue treatment box.

[0011] The collecting assembly comprises a collecting plate arranged at the inner lower end of the extrusion cavity, the collecting plate is in sliding connection with the waste residue treatment box, one end of the collecting plate is fixed with a connecting pull rod, the connecting pull rod extends to the outer side of the waste residue treatment box, the connecting pull rod is in sliding connection with the waste residue treatment box, the end of the collecting plate away from the connecting pull rod is fixed with connecting sliding blocks on both sides of the lower end, the connecting sliding blocks are in sliding connection with the waste residue treatment box, and the side of the connecting sliding blocks away from the collecting plate is provided with a plug-in hole.

[0012] The plug-in assembly comprises a plug-in spring arranged on the inner side of the waste residue treatment box, one end of the plug-in spring away from the connecting sliding block is fixedly connected with the waste residue treatment box, the other end of the plug-in spring is fixed with a plug-in block, the plug-in block is in sliding connection with the waste residue treatment box, and the plug-in block is in plug-in connection with the connecting sliding block through the plug-in hole.

[0013] Compared with the prior art, the beneficial effects of the utility model are that: through the structural design of the filtering assembly, the waste residue particles in the liquid to be filtered can be intercepted and filtered, then discharged from the inside of the filter cartridge through the connecting pipe and the discharge port, when the filtering assembly needs to be cleaned, the discharge port can be connected with the external high-pressure water pump, the waste residue particles in the filtering assembly are washed through the high-pressure water flow in the reverse direction, then the waste liquid is discharged outward through the blow-off port, so that the filtering assembly can be cleaned without disassembling and cleaning or replacing the filter screen and the filter cloth, the working steps are reduced, and the practicability of the device is improved.

[0014] Through the structural design of the waste liquid treatment assembly, the waste residue in the waste liquid discharged from the blow-off port can be compacted, so that the waste residue in the waste liquid can be filtered out while the waste residue is compacted, the waste residue is conveniently collected, the sewage containing the waste residue can be filtered, and recycling is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the overall structure schematic view of the utility model.

[0016] Figure 2 It is the structure schematic view of the filter disc of the utility model.

[0017] Figure 3 It is the schematic view of the filtering assembly of the utility model.

[0018] Figure 4 It is the structure schematic view of the fixed frame of the utility model.

[0019] Figure 5 It is the structure schematic view of the waste residue treatment assembly of the utility model.

[0020] Figure 6 This is a schematic diagram of the structure of the collection component of this utility model.

[0021] In the diagram: 1. Base plate; 2. Filter cylinder; 3. Support frame; 4. Feed inlet; 5. Drain outlet; 6. Discharge outlet; 7. Valve; 8. Waste residue treatment box; 9. Liquid inlet; 10. Liquid outlet; 11. Filter disc; 12. Fixing plate; 13. Downward pressure limit plate; 14. Connecting pipe; 15. Fixing frame; 16. Filter tank; 17. Telescopic rod; 18. Downward pressure spring; 19. Connecting column; 20. Extrusion chamber; 21. Extrusion rod; 22. Extrusion plate; 23. Telescopic spring; 24. Contact block; 25. Collection plate; 26. Connecting rod; 27. Filter plate; 28. Connecting slider; 29. ​​Insertion block; 30. Insertion spring. Detailed Implementation

[0022] Example 1

[0023] like Figures 1-6 As shown, the system includes a base plate 1, a filter cylinder 2 at the top of the base plate 1, a support frame 3 for fixed connection to the base plate 1, a feed inlet 4 at the top of the filter cylinder 2, a drain outlet 5 at the lower side of the filter cylinder 2, a valve 7 at one end of the drain outlet 5, a discharge outlet 6 at the lower end of the filter cylinder 2 for facilitating the flow of filtered liquid from the inside of the filter cylinder 2, a connecting pipe 14 at the end of the discharge outlet 6 near the filter cylinder 2, the connecting pipe 14 extending to the inside of the filter cylinder 2, a filter assembly at the position corresponding to the connecting pipe 14 on the inside of the filter cylinder 2 for filtering dilute acid, and a waste residue treatment assembly at the end of the drain outlet 5 away from the filter cylinder 2 for treating the waste residue in the waste liquid discharged from the inside of the filter cylinder 2. The filter assembly's structural design allows for the interception and filtration of waste particles in the liquid to be filtered. The waste particles are then discharged from the inside of the filter cylinder 2 through the connecting pipe 14 and the discharge port 6. When the filter assembly needs cleaning, the discharge port 6 can be connected to an external high-pressure water pump. The high-pressure water flow reverses the flow to flush the waste particles inside the filter assembly, and then the waste liquid is discharged out through the drain port 5. This eliminates the need to disassemble, clean, or replace the filter screen and filter cloth, reducing the number of steps and improving the practicality of the device.

[0024] Example 2

[0025] The filtering assembly comprises a fixing frame 15 arranged at the middle position of the inner side of the filtering cylinder 2. In order to facilitate the interception and filtration of waste residue particles in the dilute acid, a plurality of filtering discs 11 are sleeved on the outer side of the fixing frame 15. In order to facilitate the flow of the dilute acid, a plurality of filtering grooves 16 are uniformly arranged at the upper and lower ends of the filtering disc 11. The top end of the fixing frame 15 is fixedly connected with a connecting column 19. The top end of the connecting column 19 is fixedly connected with a fixed plate 12. The fixed plate 12 is fixedly connected with the filtering cylinder 2. A limiting assembly is arranged at the position between the lower end of the fixed plate 12 and the filtering disc 11, which is used for limiting the filtering disc 11. Through the structural design of the limiting assembly, the plurality of filtering discs 11 can be extruded and limited, so as to control the gap size of the filtering grooves 16 between the adjacent two filtering discs 11, and facilitate the filtration of waste residue and particles. During the filtration, the valve 7 is first closed, and then the solution to be filtered is introduced into the filtering cylinder 2 through the feeding port 4. When the solution flows to the direction close to the connecting pipe 14 through the filtering disc 11, the waste residue particles in the solution can be intercepted and filtered through the filtering grooves 16. The filtered solution is discharged from the discharging port 6 through the connecting pipe 14, and the filtration work is completed. When it is necessary to clean the waste residue particles intercepted on the outer side of the filtering disc 11, the discharging port 6 can be connected with the external pure water.

[0026] The filtering grooves 16 are arranged in an inclined manner in the filtering disc 11. Then, the pure water is sprayed to the direction close to the filtering disc 11 through the discharging port 6 and the connecting pipe 14 by the high-pressure water pump. At this time, the high-pressure water flow will make the filtering disc 11 rotate when passing through the filtering grooves 16, and the high-pressure water flow will expand the distance between the plurality of filtering discs 11, so as to facilitate the washing of the particles from the surface of the filtering disc 11 to the outside. Then, the valve 7 is opened, and the waste water is discharged to the outside through the blow-off port 5, and the cleaning work is completed.

[0027] In order to facilitate the limiting of the filtering disc 11, the limiting assembly comprises a downward limiting plate 13 arranged at the position above the filtering disc 11 on the outer side of the connecting column 19. The downward limiting plate 13 is slidably connected with the connecting column 19. A plurality of telescopic rods 17 are uniformly arranged at the position between the downward limiting plate 13 and the fixed plate 12. The fixed end of the telescopic rod 17 is fixedly connected with the fixed plate 12. The telescopic end of the telescopic rod 17 is fixedly connected with the downward limiting plate 13. In order to facilitate the limiting of the downward limiting plate 13, a downward spring 18 is sleeved on the outer side of the telescopic rod 17. One end of the downward spring 18 is fixedly connected with the fixed plate 12. The other end of the downward spring 18 is fixedly connected with the downward limiting plate 13. Through the elastic arrangement of the downward spring 18, the downward spring 18 can continuously press downward on the downward limiting plate 13, so as to extrude the filtering disc 11 through the downward limiting plate 13, and thus the limiting of the filtering disc 11 is completed.

[0028] Embodiment 3

[0029] The waste residue treatment assembly comprises a waste residue treatment box 8 arranged at a position away from the filter cartridge 2 at one end of the sewage outlet 5. In order to facilitate the waste liquid discharged from the sewage outlet 5 to be introduced into the waste residue treatment box 8, a liquid inlet 9 is connected to one side of the sewage outlet 5 and communicates with the waste residue treatment box 8. An extrusion cavity 20 is arranged at a position corresponding to the liquid inlet 9 inside the waste residue treatment box 8. In order to facilitate the discharge of treated sewage, a liquid outlet 10 is fixed to the lower end of the other side of the waste residue treatment box 8. In order to intercept and filter the waste residue particles, a filter plate 27 is fixed to the inside of one end of the liquid outlet 10 close to the extrusion cavity 20. An extrusion assembly is arranged at a position above the extrusion cavity 20, and a collection assembly is arranged at a position below the extrusion cavity 20. Through the structural design of the waste liquid treatment assembly, the waste residue in the waste liquid discharged from the sewage outlet 5 can be compacted, so that the waste residue in the waste liquid can be filtered out while the waste residue is compacted, facilitating the collection of the waste residue and the filtration of the sewage containing the waste residue, and facilitating the recycling thereof.

[0030] The extrusion assembly comprises an extrusion rod 21 vertically arranged at a position corresponding to the extrusion cavity 20 inside the waste residue treatment box 8. The extrusion rod 21 is in sliding connection with the waste residue treatment box 8. The top end of the extrusion rod 21 extends to the outside of the top end of the waste residue treatment box 8, and the lower end of the extrusion rod 21 extends to the inside of the extrusion cavity 20. In order to facilitate the compaction treatment of the waste residue particles, an extrusion plate 22 is fixed to the lower end of the extrusion rod 21. The extrusion plate 22 is in sliding connection with the waste residue treatment box 8. In order to facilitate the downward pressing of the extrusion rod 21, a contact block 24 is fixed to the top end of the extrusion rod 21. In order to facilitate the positioning of the extrusion rod 21, a telescopic spring 23 is sleeved outside the extrusion rod 21. One end of the telescopic spring 23 is fixedly connected with the contact block 24, and the other end of the telescopic spring 23 is fixedly connected with the waste residue treatment box 8. When it is necessary to compact the waste residue particles inside the extrusion cavity 20, the worker presses the contact block 24 downward, so that the contact block 24 drives the extrusion plate 22 to move downward through the extrusion rod 21. When the extrusion plate 22 moves, the excess liquid in the waste liquid can be discharged outward through the filter plate 27 and the liquid outlet 10, and the waste residue particles can be compacted by the extrusion plate 22. Then the compacted waste residue can be taken out by the collection assembly.

[0031] Embodiment 4

[0032] In order to facilitate the collection and treatment of waste slag, the collection assembly comprises a collection plate 25 arranged at the inner lower end of the extrusion cavity 20, and the collection plate 25 is slidably connected with the waste slag treatment box 8. In order to facilitate the removal of the collection plate 25 from the inner side of the waste slag treatment box 8, one end of the collection plate 25 is fixed with a connecting pull rod 26 extending to the outer side of the waste slag treatment box 8, and the connecting pull rod 26 is slidably connected with the waste slag treatment box 8. In order to facilitate the positioning of the collection plate 25, the end of the collection plate 25 away from the connecting pull rod 26 is fixed with a connecting sliding block 28 on both sides of the lower end, and the connecting sliding block 28 is slidably connected with the waste slag treatment box 8. A plug hole is formed on the side of the connecting sliding block 28 away from the collection plate 25, and a plug assembly is arranged at the position corresponding to the plug hole on the inner side of the waste slag treatment box 8. When the waste slag at the top end of the collection plate 25 needs to be removed, the connecting pull rod 26 is first pulled to move the collection plate 25, and when the collection plate 25 moves away from the waste slag treatment box 8, the waste slag can be removed, and then the collection plate 25 is inserted into the inner side of the waste slag treatment box 8.

[0033] The plug assembly comprises a plug spring 30 arranged on the inner side of the waste slag treatment box 8, and the end of the plug spring 30 away from the connecting sliding block 28 is fixedly connected with the waste slag treatment box 8. The other end of the plug spring 30 is fixed with a plug block 29 slidably connected with the waste slag treatment box 8, and the plug block 29 is plug-connected with the connecting sliding block 28 through the plug hole. When the collection plate 25 moves to the inner side of the waste slag treatment box 8, the sliding block 28 on the collection plate 25 will extrude the plug block 29 after contacting the plug block 29, so that the plug block 29 moves to the direction close to the plug spring 30. When the connecting sliding block 28 moves to the position corresponding to the plug block 29, the plug block 29 is pushed to the inner side of the connecting sliding block 28 under the elastic action of the plug spring 30, so that the positioning of the collection plate 25 is completed.

[0034] The use process of the dilute acid filter is as follows: during filtering, first, the valve 7 is closed, then the solution to be filtered is introduced into the filter cylinder 2 through the feed inlet 4, when the solution flows to the direction close to the connecting pipe 14 through the filter disc 11, the waste residue particles in the solution can be intercepted and filtered through the filter groove 16, the filtered solution is discharged outward from the discharge outlet 6 through the connecting pipe 14, and the filtering work is completed, when it is needed to clean the waste residue particles intercepted outside the filter disc 11, the discharge outlet 6 is connected with the external purified water, the purified water is sprayed to the direction close to the filter disc 11 through the discharge outlet 6 and the connecting pipe 14 by the high-pressure water pump, at this time, the high-pressure water flow makes the filter disc 11 rotate when passing through the filter groove 16, and the high-pressure water flow expands the distance between the plurality of filter discs 11, so that the particles on the surface of the filter disc 11 are washed outward, then the valve 7 is opened, the waste water is discharged outward through the blowdown outlet 5, and the cleaning work is completed, the lower pressing spring 18 is elastically arranged, the lower pressing spring 18 can continuously press the lower pressing limiting plate 13 downward, the lower pressing limiting plate 13 is pressed to the filter disc 11, and the limiting of the filter disc 11 is completed, when it is needed to compact the waste residue particles inside the extrusion cavity 20, the worker presses the contact block 24 downward, the contact block 24 drives the extrusion plate 22 to move downward through the extrusion rod 21, when the extrusion plate 22 moves, the excess liquid in the waste liquid is discharged outward through the filter plate 27 and the liquid discharge port 10, the waste residue particles are compacted through the extrusion plate 22, then the compacted waste residue is taken out through the collecting assembly, when it is needed to take out the waste residue at the top of the collecting plate 25, first, the connecting pull rod 26 is pulled, the connecting pull rod 26 drives the collecting plate 25 to move, when the collecting plate 25 moves to the waste residue and the waste residue treatment box 8 are separated, the waste residue can be taken out, then the collecting plate 25 is inserted into the waste residue treatment box 8, when the collecting plate 25 moves to the inside of the waste residue treatment box 8, the sliding block 28 on the collecting plate 25 is in contact with the plug-in block 29, the plug-in block 29 is pressed, the plug-in block 29 moves to the direction close to the plug-in spring 30, when the connecting sliding block 28 moves to the position corresponding to the plug-in block 29, the plug-in block 29 is pushed to the inside of the connecting sliding block 28 under the elasticity of the plug-in spring 30, and the limiting of the collecting plate 25 is completed.

[0035] In the utility model, the description of the structure direction and relative position relation, such as the description of before, after, left, right, up and down, does not constitute the limitation to the utility model, and is only convenient for description.

Claims

1. A dilute acid filter, characterized in that: Includes a base plate (1), a filter cylinder (2) is provided at the top of the base plate (1), the filter cylinder (2) is fixedly connected to the base plate (1) through a support frame (3), a feed inlet (4) is fixed at the top of the filter cylinder (2), a drain outlet (5) is fixed at the lower end of one side of the filter cylinder (2), a valve (7) is provided at one end of the drain outlet (5), a discharge outlet (6) is fixed at the lower end of the filter cylinder (2), a connecting pipe (14) is fixed at the end of the discharge outlet (6) near the filter cylinder (2), the connecting pipe (14) extends to the inside of the filter cylinder (2), a filter assembly is provided at the position corresponding to the connecting pipe (14) on the inside of the filter cylinder (2) for filtering dilute acid, and a waste residue treatment assembly is provided at the end of the drain outlet (5) away from the filter cylinder (2) for treating the waste residue in the waste liquid discharged from the inside of the filter cylinder (2).

2. The dilute acid filter according to claim 1, characterized in that: The filter assembly includes a fixing frame (15), which is located at the middle of the inner side of the filter cylinder (2). Multiple filter discs (11) are sleeved on the outer side of the fixing frame (15). Multiple filter grooves (16) are evenly opened at the upper and lower ends of the filter discs (11). A connecting column (19) is fixed at the top of the fixing frame (15). A fixing plate (12) is fixed at the top of the connecting column (19). The fixing plate (12) is fixedly connected to the filter cylinder (2). A limit component is provided at the lower end of the fixing plate (12) and at the position between it and the filter discs (11) to limit the filter discs (11).

3. A dilute acid filter according to claim 2, characterized in that: The limiting assembly includes a pressure limiting plate (13), which is located outside the connecting column (19) and above the filter disc (11). The pressure limiting plate (13) is slidably connected to the connecting column (19). Multiple telescopic rods (17) are evenly arranged between the pressure limiting plate (13) and the fixing plate (12). The fixed end of the telescopic rod (17) is fixedly connected to the fixing plate (12), and the telescopic end of the telescopic rod (17) is fixedly connected to the pressure limiting plate (13). A pressure spring (18) is sleeved on the outside of the telescopic rod (17). One end of the pressure spring (18) is fixedly connected to the fixing plate (12), and the other end of the pressure spring (18) is fixedly connected to the pressure limiting plate (13).

4. A dilute acid filter according to claim 1, characterized in that: The waste residue treatment assembly includes a waste residue treatment box (8), which is located at the end of the drain outlet (5) away from the filter cylinder (2). One side of the drain outlet (5) is connected to an inlet (9), which is connected to the waste residue treatment box (8). A squeezing chamber (20) is provided inside the waste residue treatment box (8) at a position corresponding to the inlet (9). A drain outlet (10) is fixed at the lower end of the other side of the waste residue treatment box (8). A filter plate (27) is fixed inside the drain outlet (10) near the squeezing chamber (20). A squeezing assembly is provided above the squeezing chamber (20), and a collecting assembly is provided below the squeezing chamber (20).

5. A dilute acid filter according to claim 4, characterized in that: The extrusion assembly includes an extrusion rod (21), which is vertically positioned inside the waste residue treatment box (8) and at a position corresponding to the extrusion chamber (20). The extrusion rod (21) is slidably connected to the waste residue treatment box (8). The top end of the extrusion rod (21) extends to the outer side of the top end of the waste residue treatment box (8), and the lower end of the extrusion rod (21) extends to the inner side of the extrusion chamber (20). An extrusion plate (22) is fixed to the lower end of the extrusion rod (21), and the extrusion plate (22) is slidably connected to the waste residue treatment box (8). A contact block (24) is fixed to the top end of the extrusion rod (21), and a telescopic spring (23) is sleeved on the outer side of the extrusion rod (21). One end of the telescopic spring (23) is fixedly connected to the contact block (24), and the other end of the telescopic spring (23) is fixedly connected to the waste residue treatment box (8).

6. A dilute acid filter according to claim 4, characterized in that: The collection assembly includes a collection plate (25), which is located at the lower inner end of the extrusion chamber (20). The collection plate (25) is slidably connected to the waste residue treatment box (8). A connecting rod (26) is fixed to one end of the collection plate (25). The connecting rod (26) extends to the outside of the waste residue treatment box (8). The connecting rod (26) is slidably connected to the waste residue treatment box (8). Connecting sliders (28) are fixed on both sides of the lower end of the collection plate (25) away from the connecting rod (26). The connecting sliders (28) are slidably connected to the waste residue treatment box (8). An insertion hole is provided on the side of the connecting slider (28) away from the collection plate (25). An insertion assembly is provided on the inner side of the waste residue treatment box (8) at a position corresponding to the insertion hole.

7. A dilute acid filter according to claim 6, characterized in that: The plug-in assembly includes a plug-in spring (30), which is disposed inside the waste residue treatment box (8). One end of the plug-in spring (30) away from the connecting slider (28) is fixedly connected to the waste residue treatment box (8). The other end of the plug-in spring (30) is fixed with a plug-in block (29). The plug-in block (29) is slidably connected to the waste residue treatment box (8). The plug-in block (29) is plugged into the connecting slider (28) through a plug-in hole.

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