A self-cleaning device for acid filters

By introducing a spring vibration structure for the tank and filter in the acid filter, combined with pressure gauge monitoring, the problem of acid filter clogging is solved, achieving a self-cleaning effect and ensuring production stability and equipment lifespan.

CN224422135UActive Publication Date: 2026-06-30ANGANG STEEL CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ANGANG STEEL CO LTD
Filing Date
2025-06-04
Publication Date
2026-06-30

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Abstract

This utility model belongs to the field of acid filter technology, specifically an acid filter self-cleaning device. Addressing the problems frequently caused by clogged acid pump inlets, acid nozzles, and graphite heaters in the background art, the following solution is proposed: A tank body is provided, with a top cover fixedly connected to the outer wall of the tank top. A telescopic cylinder is installed on the outer wall of the top cover, and a telescopic column is fixedly connected to the piston rod of the telescopic cylinder. This utility model ensures effective acid filtration by adding a return acid filter inside the tank, guaranteeing that the acid supply flow rate meets the unit's production requirements. A pressure gauge is used to monitor the flow rate and pressure of the acid inside the tank in real time. If filter clogging affects the acid flow rate, the telescopic column can be raised and lowered by retracting the piston rod of the telescopic cylinder. Because two sets of springs are installed between the filter and the tank body, vibration operation of the filter is achieved, effectively dislodging impurities and providing a self-cleaning effect.
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Description

Technical Field

[0001] This utility model relates to the field of acid filter technology, and in particular to a self-cleaning device for acid filters. Background Technology

[0002] An acid filter is a device specifically designed for filtering acidic liquids. Its main function is to remove impurities and particulate matter from the liquid, ensuring that the filtered liquid is pure, safe, and free of contamination. Acid filters are commonly used to treat highly corrosive acids, such as hydrochloric acid, nitric acid, and sulfuric acid.

[0003] The cold rolling mill has long suffered from problems such as inconsistent acid supply flow and excessive impurities in the acid solution, which frequently cause blockages in the acid pump inlet, acid nozzle, and graphite heater, severely hindering the unit's efforts to improve quality and efficiency. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides an acid filter self-cleaning device, which overcomes the shortcomings of the prior art and effectively solves the problems of frequent blockage of acid pump inlet, acid nozzle and graphite heater.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A self-cleaning device for an acid filter includes a tank, a top cover fixedly connected to the top outer wall of the tank, and a telescopic cylinder provided on the top outer wall of the top cover. The piston rod of the telescopic cylinder is fixedly connected to a telescopic column, and a filter is fixedly connected to the bottom outer wall of the telescopic column.

[0007] The filter has symmetrically distributed outer rings welded to its outer wall, and the tank has symmetrically distributed inner rings welded to its inner wall. The inner and outer rings are fixedly connected by symmetrically distributed springs. The bottom of one side of the outer wall of the tank has an inlet, and the top of the other side of the outer wall of the tank has a drain. A pressure gauge is installed on the outer wall of the drain.

[0008] Preferably, an inlet pipe and a outlet pipe are fixedly connected to the outer wall of one end of the inlet and outlet respectively by flanges.

[0009] Preferably, a connecting frame is welded to the top outer wall of the top cover, and the telescopic cylinder is fixedly connected to the top outer wall of the connecting frame by screws.

[0010] Preferably, the top outer wall of the top cover is provided with a seal and a linear bearing, and the telescopic column is slidably connected to the inner wall of the seal and the linear bearing.

[0011] Preferably, an observation port is provided on one outer wall of the tank.

[0012] Preferably, a waste discharge pipe is provided on the bottom outer wall of the tank, and a sealing cap is screwed to the bottom of the outer wall of the waste discharge pipe.

[0013] Preferably, a support frame is welded to the bottom of the outer wall of the tank.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. The acid filter self-cleaning device in this design adds a filtration system inside the tank. During daily production, due to the agitation inside the acid circulation tank, some small particles are not easy to settle to the bottom of the tank. The filter has a certain sedimentation effect, which reduces the probability of clogging of nozzles and other equipment. By adding a return acid filter inside the tank, the acid filtration effect is guaranteed, and the acid supply flow rate is guaranteed to meet the unit's production requirements.

[0016] 2. The acid filter self-cleaning device in this design uses a pressure gauge to monitor the flow rate and pressure of the acid inside the tank in real time. If the filter becomes clogged and affects the flow rate of the acid, the telescopic cylinder can be used to extend and retract the piston rod to control the raising and lowering of the telescopic column. Since two sets of springs are set between the filter and the tank, the filter can be vibrated, which can effectively shake off impurities and has a self-cleaning effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an acid filter self-cleaning device proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the internal connection structure of the tank of a self-cleaning acid filter device proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the filter connection structure of an acid filter self-cleaning device proposed in this utility model;

[0020] In the diagram: 1. Tank body; 2. Top cover; 3. Telescopic cylinder; 4. Telescopic column; 5. Filter; 6. Outer ring; 7. Inner ring; 8. Spring; 9. Liquid inlet; 10. Liquid outlet; 11. Pressure gauge; 12. Liquid inlet pipe; 13. Liquid outlet pipe; 14. Connecting frame; 15. Seal; 16. Linear bearing; 17. Observation port; 18. Waste discharge pipe; 19. Sealing cover; 20. Support frame. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Example 1, refer to Figure 1-2A self-cleaning device for an acid filter includes a tank 1, a top cover 2 fixedly connected to the top outer wall of the tank 1, and a telescopic cylinder 3 provided on the top outer wall of the top cover 2. The piston rod of the telescopic cylinder 3 is fixedly connected to a telescopic column 4, and a filter 5 is fixedly connected to the bottom outer wall of the telescopic column 4.

[0023] In this embodiment, a filtration system is added inside the tank 1. During daily production, due to the agitation inside the acid circulation tank, some small particles are not easy to settle at the bottom of the tank. The filter 5 has a certain sedimentation effect, which reduces the probability of clogging of nozzles and other equipment. By adding the acid return filter 5 inside the tank 1, the acid filtration effect is ensured, and the acid supply flow rate is guaranteed to meet the unit's production requirements.

[0024] Example 2, refer to Figure 1-3 A self-cleaning device for an acid filter is provided. The outer wall of the filter 5 is welded with symmetrically distributed outer rings 6, and the inner wall of the tank 1 is welded with symmetrically distributed inner rings 7. The inner rings 7 and the outer rings 6 are fixedly connected with symmetrically distributed springs 8. The bottom of one side of the outer wall of the tank 1 is provided with a liquid inlet 9, and the top of the other side of the outer wall of the tank 1 is provided with a liquid outlet 10. A pressure gauge 11 is installed on the outer wall of the liquid outlet 10.

[0025] In this embodiment, pressure gauge 11 is used to monitor the flow rate and pressure value of acid inside tank 1 in real time. Once the filter 5 is blocked and affects the flow rate of acid, the extension cylinder 3 can extend and retract the piston rod to control the lifting and lowering of the extension column 4. Since two sets of springs 8 are set between the filter 5 and the tank 1, the vibration operation of the filter 5 is realized, which can effectively shake off impurities and has a self-cleaning effect.

[0026] Reference Figure 1-2 An inlet pipe 12 and a outlet pipe 13 are fixedly connected to the outer wall of one end of the inlet 9 and the outlet 10 respectively by flanges.

[0027] Reference Figure 1-2 The top cover 2 has a connecting frame 14 welded to its outer top wall, and the telescopic cylinder 3 is fixedly connected to the top outer wall of the connecting frame 14 by screws.

[0028] Reference Figure 1 The top outer wall of the top cover 2 is provided with a seal 15 and a linear bearing 16, and the telescopic column 4 is slidably connected to the inner wall of the seal 15 and the linear bearing 16.

[0029] Reference Figure 1 An observation port 17 is provided on one side of the outer wall of the tank body 1.

[0030] Reference Figure 1 The bottom outer wall of the tank body 1 is provided with a waste discharge pipe 18, and a sealing cap 19 is screwed to the bottom of the outer wall of the waste discharge pipe 18.

[0031] Reference Figure 1 A support frame 20 is welded to the bottom of the outer wall of tank 1.

[0032] Working principle: Acid enters the tank 1 through the inlet pipe 12, is filtered by the filter 5, and is discharged through the drain pipe 13. The filter 5 has a certain sedimentation effect, reducing the probability of clogging of nozzles and other equipment. The addition of the acid return filter 5 inside the tank 1 ensures the acid filtration effect. Under the action of acid flow, the pressure gauge 11 can monitor the flow rate and pressure value of the acid in real time. Once the filter 5 is clogged, the extension cylinder 3 can be used to extend and retract the piston rod to control the raising and lowering of the extension column 4. Since two sets of springs 8 are set between the filter 5 and the tank 1, the filter 5 is vibrated, which can effectively shake off impurities and extend the service life of the filter 5. Impurities can be discharged through the waste discharge pipe 18.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A self-cleaning device for an acid filter, comprising a tank (1), characterized in that, The tank body (1) is fixedly connected to the top outer wall with a top cover (2), and the top outer wall of the top cover (2) is provided with a telescopic cylinder (3). The piston rod of the telescopic cylinder (3) is fixedly connected to a telescopic column (4), and the bottom outer wall of the telescopic column (4) is fixedly connected to a filter (5). The filter (5) has symmetrically distributed outer rings (6) welded on its outer wall, and the tank body (1) has symmetrically distributed inner rings (7) welded on its inner wall. The inner rings (7) and the outer rings (6) are fixedly connected by symmetrically distributed springs (8). The bottom of one side of the outer wall of the tank body (1) is provided with a liquid inlet (9), and the top of the other side of the outer wall of the tank body (1) is provided with a liquid outlet (10). A pressure gauge (11) is installed on the outer wall of the liquid outlet (10).

2. The acid filter self-cleaning device according to claim 1, characterized in that, The inlet (9) and outlet (10) are respectively fixedly connected to the outer wall of one end by a flange via an inlet pipe (12) and an outlet pipe (13).

3. The acid filter self-cleaning device according to claim 1, characterized in that, The top cover (2) has a connecting frame (14) welded to its top outer wall, and the telescopic cylinder (3) is fixedly connected to the top outer wall of the connecting frame (14) by screws.

4. The acid filter self-cleaning device according to claim 1, characterized in that, The top outer wall of the top cover (2) is provided with a seal (15) and a linear bearing (16), and the telescopic column (4) is slidably connected to the inner wall of the seal (15) and the linear bearing (16).

5. The acid filter self-cleaning device according to claim 1, characterized in that, An observation port (17) is provided on one side of the outer wall of the tank (1).

6. The acid filter self-cleaning device according to claim 1, characterized in that, The tank (1) has a waste discharge pipe (18) on its bottom outer wall, and a sealing cap (19) is screwed to the bottom of the outer wall of the waste discharge pipe (18).

7. The acid filter self-cleaning device according to claim 1, characterized in that, A support frame (20) is welded to the bottom of the outer wall of the tank (1).