Liquid chlorine filtering device

Abstract

The utility model relates to the technical field of chemical equipment, and provides a liquid chlorine filtering device which comprises a sealing cover plate and a filtering box, an L-shaped air inlet pipe and an L-shaped exhaust pipe which extend into the filtering box are fixedly arranged on the sealing cover plate, a first annular support is fixedly arranged in the filtering box, and a second annular support and two filtering cylinders are installed in the filtering box in a sealed and sliding mode. Filter screens are fixedly arranged at the lower ends of the two filter cylinders and the second annular bracket; two symmetrical arc-shaped pressing plates are fixedly arranged on the lower end surface of the sealing cover plate; the filtering device has the advantages that impurities are filtered through the two filtering barrels and the filtering net, the filtering effect is improved, the filtering box can be conveniently disassembled and assembled, the convenience of cleaning the filtering barrels and the filtering net is improved, the filtering effect is improved, and the filtering device is suitable for popularization and application. And the working efficiency is improved, the labor amount is reduced, and great economic benefits are achieved.

Description

Technical Field

[0001] This utility model belongs to the field of chemical equipment technology, and specifically relates to a liquid chlorine filtration device. Background Technology

[0002] Liquid chlorination, also known as liquid chlorine, is a yellow-green liquid mainly produced in the chlor-alkali industry. It is used as a raw material in the production of chloroacetic acid, epichlorohydrin, chlorinated paraffin, thionyl chloride, vinyl chloride, etc. The production process of liquid chlorine contains large solid impurities such as acid residue and rust, as well as smaller impurities such as chlorine dust, which cannot be filtered in a timely manner.

[0003] Patent document with patent number "202223469057.5" discloses a liquid chlorine filtration device, including a liquid chlorine outlet pipe and a filter cylinder. The liquid chlorine outlet pipe and the filter cylinder are detachably connected. The liquid chlorine outlet pipe extends into the filter cylinder, and a detachable solid filter can is provided at the tail end of the liquid chlorine outlet pipe. The bottom of the solid filter can is evenly distributed with filter holes. The filter cylinder is filled with a filler for filtering chlorine dust, and an outlet pipe is provided at the tail end of the filter cylinder. This liquid chlorine filtration device can filter large impurities such as acid sludge and rust, and at the same time filter chlorine dust. It is also easy to disassemble and replace, which greatly improves the convenience of use.

[0004] However, after prolonged use, the debris from the filler can be flushed out by liquid chlorine, causing secondary pollution to the liquid chlorine. Furthermore, it is inconvenient to fill and drain the filler. Utility Model Content

[0005] In view of this, the present invention provides a liquid chlorine filtration device, wherein liquid chlorine or gas after liquid chlorine vaporization enters the filter box through an L-shaped inlet pipe, and impurities are filtered through two filter cylinders and a filter screen, thereby improving the filtration effect. By making the filter box easy to disassemble and install, the device improves the convenience of cleaning the filter cylinders and filter screen, increases work efficiency, reduces labor, and has significant economic benefits.

[0006] The technical solution is as follows: A liquid chlorine filtration device includes a sealing cover and a filter box. The sealing cover is sealed and fixed to the filter box by bolts and nuts. An L-shaped air inlet pipe and an L-shaped exhaust pipe extending into the filter box are fixedly installed on the sealing cover. A first annular support is fixedly installed inside the filter box. A second annular support and two filter cylinders are slidably installed inside the filter box. Filter screens are fixedly installed on the lower ends of the two filter cylinders and on the second annular support. Two symmetrical arc-shaped pressure plates are fixedly installed on the lower end face of the sealing cover. The sealing cover fixes the second annular support and the two filter cylinders between the arc-shaped pressure plates and the first annular support. The L-shaped air inlet pipe and the L-shaped exhaust pipe are located at the two ends of the second annular support and the two filter cylinders, respectively.

[0007] During use, the above technical solution allows liquid chlorine or vaporized liquid chlorine gas to enter the filter box through an L-shaped inlet pipe. Impurities are filtered through two filter cylinders and a filter screen, improving the filtration effect. The filter box can be easily disassembled and installed, enhancing the ease of cleaning the filter cylinders and filter screen, increasing work efficiency, reducing labor, and providing significant economic benefits.

[0008] Preferably, a connecting pipe is fixedly installed at the central axis of the two filter cylinders, a through hole is opened at the central axis of the filter screen, one end of the L-shaped air inlet pipe is sealed through the through hole and the connecting pipe in sequence, and extends to the lower side of the first annular bracket, and one end of the L-shaped exhaust pipe is located on the upper side of the arc-shaped pressure plate.

[0009] Preferably, a second conical cylinder is fixedly provided at the lower end of both the filter cylinder and the second annular support, and a second conical groove corresponding to the second conical cylinder is opened at the upper end of both the filter cylinder and the first annular support. The second conical cylinder is sealed and inserted into the second conical groove to achieve a sealed connection.

[0010] Preferably, a first conical cylinder is fixedly provided at the lower end of the sealing cover, and a flange is fixedly provided on the upper outer wall of the filter box. A first conical groove is provided at the upper end of the flange. The sealing cover is sealed to the filter box by inserting the first conical cylinder into the first conical groove.

[0011] Preferably, the filter cartridge is filled with a filler material for adsorbing chlorine dust.

[0012] During use, the above technical solution improves the sealing performance between the filter cylinder, the first annular support, and the second annular support by inserting the second conical cylinder into the second conical groove, preventing chlorine gas from being discharged directly through the L-shaped exhaust pipe without passing through the filter cylinder, thus affecting the filtration effect. The first conical cylinder is also inserted into the first conical groove to improve the sealing performance between the sealing cover and the filter box, preventing chlorine gas leakage and environmental pollution.

[0013] Preferably, an L-shaped detection tube is provided at the air outlet end of the filter box near the L-shaped air inlet pipe, a pressure measuring device is provided inside the L-shaped detection tube, and an alarm is provided on the outer wall of the filter box, and the alarm is electrically connected to the pressure measuring device.

[0014] Preferably, the L-shaped detection tube is located in the gap between the bottom surface of the filter box and the first annular support.

[0015] Preferably, the pressure measuring device includes a piston cavity disposed within an L-shaped detection tube, a piston plate being slidably and sealed within the piston cavity, a piston rod being fixedly disposed on the piston plate, a second detection contact being fixedly disposed at the end of the piston rod, an elastic component being disposed between the piston plate and the piston cavity, and a second support being disposed at the upper end of the L-shaped detection tube, on which a first detection contact corresponding to the second detection contact is disposed.

[0016] Preferably, a third annular bracket is fixedly installed inside the piston cavity, and the elastic component is movably fitted on the piston rod. One end of the elastic component is connected and fixed to the piston plate, and the other end is connected and fixed to the third annular bracket. The piston rod slides through the third annular bracket.

[0017] During use, the above technical solution works as follows: the pressure at the L-shaped air inlet pipe is monitored in real time by a pressure measuring device. When the set value is reached, an alarm is triggered to remind the staff to clean the impurities in the filter cartridge in time to prevent the filter cartridge from becoming clogged, which would reduce the airflow and increase the gas pressure in the filter box, thereby causing damage to the equipment.

[0018] Preferably, a first bracket is fixedly installed on the outer wall of the L-shaped detection tube, and a screw hole is opened on the first bracket. The second bracket is connected to the first detection contact through a connecting rod. The connecting rod is slidably installed in the piston cavity. An adjusting bolt is rotatably installed on the second bracket, and the adjusting bolt is threaded in the screw hole.

[0019] During use, the above technical solution involves operating the adjusting bolt to move the first bracket along the L-shaped detection tube, thereby adjusting the distance between the first and second detection contacts and enabling the function of increasing the limit voltage value as needed. This solution is suitable for use in multiple scenarios.

[0020] After adopting the above technical solution, the beneficial effects of this utility model are:

[0021] 1. Liquid chlorine or the gas produced by liquid chlorine vaporization enters the filter box through an L-shaped inlet pipe. Impurities are filtered through two filter cylinders and a filter screen, improving the filtration effect. The filter box can be easily disassembled and installed, making it convenient to clean the filter cylinders and filter screen, thus improving work efficiency, reducing labor, and providing significant economic benefits.

[0022] 2. By inserting the second conical cylinder into the second conical groove, the sealing performance between the filter cylinder, the first annular support, and the second annular support is improved, preventing chlorine gas from being discharged directly through the L-shaped exhaust pipe without passing through the filter cylinder, thus affecting the filtration effect. By inserting the first conical cylinder into the first conical groove, the sealing performance between the sealing cover and the filter box is improved, preventing chlorine gas leakage and environmental pollution.

[0023] 3. The pressure at the L-shaped air inlet pipe is monitored in real time by a pressure measuring device. When the set value is reached, an alarm is triggered to remind the staff to clean the impurities in the filter cartridge in time to prevent the filter cartridge from becoming clogged, which would reduce the air flow and increase the gas pressure in the filter box, thereby damaging the equipment.

[0024] 4. By operating the adjusting bolt, the first bracket is moved along the L-shaped detection tube, thereby adjusting the distance between the first and second detection contacts, realizing the function of increasing the limit voltage value as needed, which is suitable for use in multiple scenarios. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a perspective view of the present utility model;

[0027] Figure 2 This is a top view of the present invention;

[0028] Figure 3 This utility model Figure 2 Sectional view at point AA;

[0029] Figure 4 This is an exploded view of the present invention;

[0030] Figure 5 This is a perspective view of the sealing cover plate of this utility model;

[0031] Figure 6 This is a perspective view of the filter box of this utility model;

[0032] Figure 7 This is a cross-sectional view of the filter box of this utility model;

[0033] Figure 8 This is a partial perspective view of the filter cylinder of this utility model;

[0034] Figure 9 This is a cross-sectional view of the filter cylinder of this utility model;

[0035] Figure 10 This utility model Figure 3 A magnified view of a section at point B in the middle;

[0036] Figure 11 This utility model Figure 4A magnified view of a section at point C;

[0037] In the diagram, 1. Sealing cover; 2. Mounting hole; 3. Bolt and nut; 4. First conical cylinder; 5. L-shaped exhaust pipe; 6. L-shaped intake pipe; 7. Main intake pipe; 8. Main exhaust pipe; 9. Arc-shaped pressure plate; 10. Filter box; 11. Flange; 12. First conical groove; 13. First annular bracket; 14. Second conical groove; 15. Controller; 16. Alarm; 17. L-shaped detection tube; 18. First bracket; 19. Screw hole; 20. Hoses; 21. Filter cylinder; 22. Connecting pipe; 23. Filter screen; 24. Second conical cylinder; 25. Second annular bracket; 26. Through hole; 27. Piston plate; 28. Elastic component; 29. ​​Piston rod; 30. Third annular bracket; 31. Second bracket; 32. Connecting rod; 33. First detection contact; 34. Adjusting bolt; 35. Second detection contact; 36. Piston cavity; Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Example 1

[0040] like Figures 1 to 11 As shown, a liquid chlorine filtration device includes a sealing cover plate 1 and a filter box 10. The sealing cover plate 1 is sealed and fixed to the filter box 10 by bolts and nuts 3. An L-shaped air inlet pipe 6 and an L-shaped exhaust pipe 5 extending into the filter box 10 are fixedly installed on the sealing cover plate 1. A first annular support 13 is fixedly installed inside the filter box 10. A second annular support 25 and two filter cylinders 21 are slidably installed inside the filter box 10. Filter screens 23 are fixedly installed on the lower ends of the two filter cylinders 21 and on the second annular support 25. Two symmetrical arc-shaped pressure plates 9 are fixedly installed on the lower end face of the sealing cover plate 1. The second annular support 25 and the two filter cylinders 21 are fixed between the arc-shaped pressure plates 9 and the first annular support 13 by the sealing cover plate 1. The L-shaped air inlet pipe 6 and the L-shaped exhaust pipe 5 are located at the two ends of the second annular support 25 and the two filter cylinders 21, respectively.

[0041] Two filter cylinders 21 are fixedly provided with connecting pipes 22 at their central axes. A through hole 26 is opened at the central axis of the filter screen 23. One end of the L-shaped air inlet pipe 6 is sealed and passes through the through hole 26 and the connecting pipe 22 in sequence, and extends to the lower side of the first annular bracket 13. One end of the L-shaped exhaust pipe 5 is located on the upper side of the arc-shaped pressure plate 9.

[0042] Specifically: the air intake end of the L-shaped air intake pipe 6 is sealed and connected to the main air intake pipe 7, and the exhaust end of the L-shaped exhaust pipe 5 is connected to the main exhaust pipe 8. Both are quickly sealed and connected through the cooperation of flange 11 and bolts and nuts 3. Valves are installed on the main air intake pipe 7 and the main exhaust pipe 8 to control the opening or closing of the main air intake pipe 7 and the main exhaust pipe 8.

[0043] The lower ends of the filter cylinder 21 and the second annular support 25 are both fixedly provided with a second conical cylinder 24. The upper ends of the filter cylinder 21 and the first annular support 13 are both provided with a second conical groove 14 corresponding to the second conical cylinder 24. The second conical cylinder 24 is sealed and inserted into the second conical groove 14 to achieve a sealed connection.

[0044] A first conical cylinder 4 is fixedly installed at the lower end of the sealing cover plate 1, and a flange 11 is fixedly installed on the upper outer wall of the filter box 10. A first conical groove 12 is opened at the upper end of the flange 11. The sealing cover plate 1 and the filter box 10 are sealed and connected by inserting the first conical cylinder 4 into the first conical groove 12.

[0045] Specifically: Both flange 11 and sealing cover 1 have multiple axially evenly distributed mounting holes 2. Bolts are passed through the mounting holes 2 of both and threaded with nuts to connect and fix the sealing cover 1 to the filter box 10.

[0046] The filter cylinder 21 is filled with rock wool, which is used to adsorb chlorine dust.

[0047] Specifically, the aperture of the filter screen 23 on the filter cylinder 21 and the second annular support 25 gradually decreases from bottom to top.

[0048] In actual operation: Liquid chlorine or chlorine gas in the main intake pipe 7 is introduced into the gap between the bottom surface of the filter box 10 and the first annular support 13 through the L-shaped intake pipe 6. Particulate impurities such as rust are filtered through the filter screens 23 on the two filter cylinders 21, and chlorine dust is adsorbed by the packing material. Simultaneously, filtration is performed again through the filter screen 23 on the second annular support 25, preventing the discharge of packing material debris along with the liquid chlorine or chlorine gas, thus avoiding secondary pollution. When cleaning of the filter cylinders 21 and filter screens 23 is required, the bolts and nuts 3 are operated to disassemble the filter box 10 from the sealing cover plate 1, thereby removing the filter cylinders 21 and the second annular support 25 for easy access. After cleaning, the filter box 10 and the sealing cover plate 1 are installed. The arc-shaped pressure plate 9 contacts the second annular bracket 25 and presses the second annular bracket 25 and the filter cylinder 21 downwards. It works with the first annular bracket 13 to seal the two together. The second conical cylinder 24 is inserted into the second conical groove 14 to improve the sealing performance between the filter cylinder 21, the first annular bracket 13 and the second annular bracket 25. This prevents chlorine gas from being discharged directly through the L-shaped exhaust pipe 5 without passing through the filter cylinder 21, which would affect the filtration effect. The first conical cylinder 4 is inserted into the first conical groove 12 to improve the sealing performance between the sealing cover plate 1 and the filter box 10, preventing chlorine gas leakage and environmental pollution.

[0049] Example 2

[0050] Based on Embodiment 1, an L-shaped detection tube 17 is provided at the air outlet end of the filter box 10 near the L-shaped air inlet pipe 6. A pressure measuring device is provided inside the L-shaped detection tube 17. An alarm 16 is provided on the outer wall of the filter box 10. The alarm 16 is electrically connected to the pressure measuring device.

[0051] Specifically: A controller 15 is fixedly installed on the filter box 10. The alarm 16 and the pressure measuring device are all electrically connected to the controller 15. The pressure measuring device detects the pressure value and sends it to the controller 15, and the controller 15 controls the alarm 16 to work.

[0052] The L-shaped detection tube 17 is located in the gap between the bottom surface of the filter box 10 and the first annular support 13.

[0053] The pressure measuring device includes a piston cavity 36 disposed within an L-shaped detection tube 17. A piston plate 27 is slidably mounted inside the piston cavity 36. A piston rod 29 is fixedly disposed on the piston plate 27. A second detection contact 35 is fixedly disposed at the end of the piston rod 29. An elastic component 28 is disposed between the piston plate 27 and the piston cavity 36. A second support 31 is disposed at the upper end of the L-shaped detection tube 17. A first detection contact 33 corresponding to the second detection contact 35 is disposed on the second support 31.

[0054] A third annular bracket 30 is fixedly installed inside the piston cavity 36. An elastic component 28 is movably fitted onto the piston rod 29. One end of the elastic component 28 is connected and fixed to the piston plate 27, and the other end is connected and fixed to the third annular bracket 30. The piston rod 29 slides through the third annular bracket 30.

[0055] Specifically: the elastic component 28 is a pressure-sensing spring, and a flexible hose 20 is provided between the controller 15 and the first bracket 18 for connecting the wires to pass through.

[0056] In actual operation: the pressure of liquid chlorine or chlorine gas in the L-shaped detection tube 17 is equal to the pressure at the exhaust end of the L-shaped air inlet pipe 6. The pressure pushes the piston plate 27 to move along the piston cavity 36 and compresses the elastic component 28. The piston plate 27 drives the piston rod 29 to move. When the preset value is reached, the second detection contact 35 on the piston rod 29 contacts the first detection contact 33. The controller 15 controls the alarm 16 to work, reminding the staff to clean the filter cylinder 21 and the filter box 10. After cleaning, the filter box 10 and the filter cylinder 21 are installed. Under the action of the elastic component 28, the second detection contact 35 is moved away from the first detection contact 33, realizing the real-time monitoring function and preventing the filter cylinder 21 from becoming blocked, which would reduce the air flow and increase the gas pressure in the filter box 10, thereby causing damage to the equipment.

[0057] Example 3

[0058] Based on Embodiment 2, a first bracket 18 is fixedly installed on the outer wall of the L-shaped detection tube 17. A screw hole 19 is opened on the first bracket 18. A second bracket 31 is connected to the first detection contact 33 through a connecting rod 32. The connecting rod 32 is slidably installed in the piston cavity 36. An adjusting bolt 34 is rotatably installed on the second bracket 31. The adjusting bolt 34 is threaded in the screw hole 19.

[0059] In actual operation: the operation of the adjusting bolt 34 drives the first bracket 18 to move along the L-shaped detection tube 17, thereby adjusting the distance between the first detection contact 33 and the second detection contact 35, realizing the function of increasing the limit value as needed, and applicable to multiple scenarios.

[0060] The working principle of this utility model is as follows: Liquid chlorine or chlorine gas in the main air inlet pipe 7 is introduced into the gap between the bottom surface of the filter box 10 and the first annular support 13 through the L-shaped air inlet pipe 6. Particulate impurities such as rust are filtered through the filter screens 23 on the two filter cylinders 21, and chlorine dust is adsorbed by the filling material. Simultaneously, the filter is further filtered through the filter screen 23 on the second annular support 25, preventing the debris of the filling material from being discharged with the liquid chlorine or chlorine gas, causing secondary pollution. When it is necessary to clean the filter cylinders 21 and filter screens 23, operate the bolts and nuts 3 to disassemble the filter box 10 from the sealing cover plate 1, thereby removing the filter cylinders 21 and the second annular support 25. After cleaning, the filter box 10 and the sealing cover plate 1 are installed. The arc-shaped pressure plate 9 contacts the second annular bracket 25 and presses the second annular bracket 25 and the filter cylinder 21 downwards. It works with the first annular bracket 13 to seal the two together. The second conical cylinder 24 is inserted into the second conical groove 14 to improve the sealing performance between the filter cylinder 21, the first annular bracket 13 and the second annular bracket 25. This prevents chlorine gas from being discharged directly through the L-shaped exhaust pipe 5 without passing through the filter cylinder 21, which would affect the filtration effect. The first conical cylinder 4 is inserted into the first conical groove 12 to improve the sealing performance between the sealing cover plate 1 and the filter box 10, preventing chlorine gas leakage and environmental pollution.

[0061] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A liquid chlorine filtration device, comprising a sealing cover (1) and a filter box (10), wherein the sealing cover (1) is fixedly and sealed to the filter box (10) by bolts and nuts (3), characterized in that: An L-shaped air inlet pipe (6) and an L-shaped exhaust pipe (5) extending into the filter box (10) are fixedly installed on the sealing cover plate (1). A first annular bracket (13) is fixedly installed inside the filter box (10). A second annular bracket (25) and two filter cylinders (21) are slidably installed inside the filter box (10). Filter screens (23) are fixedly installed on the lower ends of the two filter cylinders (21) and the second annular bracket (25). Two symmetrical arc-shaped pressure plates (9) are fixedly installed on the lower end face of the sealing cover plate (1). The second annular bracket (25) and the two filter cylinders (21) are fixed between the arc-shaped pressure plates (9) and the first annular bracket (13) by the sealing cover plate (1). The L-shaped air inlet pipe (6) and the L-shaped exhaust pipe (5) are located at the two ends of the second annular bracket (25) and the two filter cylinders (21), respectively.

2. The liquid chlorine filtration device according to claim 1, characterized in that, A connecting pipe (22) is fixedly installed at the central axis of the two filter cylinders (21), and a through hole (26) is opened at the central axis of the filter screen (23). One end of the L-shaped air inlet pipe (6) is sealed through the through hole (26) and the connecting pipe (22) in sequence, and extends to the lower side of the first annular bracket (13). One end of the L-shaped exhaust pipe (5) is located on the upper side of the arc-shaped pressure plate (9).

3. The liquid chlorine filtration device according to claim 2, characterized in that, The lower ends of the filter cylinder (21) and the second annular support (25) are both fixedly provided with a second conical cylinder (24). The upper ends of the filter cylinder (21) and the first annular support (13) are both provided with a second conical groove (14) corresponding to the second conical cylinder (24). The second conical cylinder (24) is sealed and inserted into the second conical groove (14) to achieve a sealed connection.

4. A liquid chlorine filtration device according to any one of claims 1-3, characterized in that, The lower end of the sealing cover (1) is fixedly provided with a first conical cylinder (4), and the upper outer wall of the filter box (10) is fixedly provided with a flange (11). The upper end of the flange (11) is provided with a first conical groove (12). The sealing cover (1) and the filter box (10) are sealed and connected by inserting the first conical cylinder (4) into the first conical groove (12).

5. A liquid chlorine filtration device according to claim 4, characterized in that, The filter cylinder (21) is filled with a filler material for adsorbing chlorine dust.

6. A liquid chlorine filtration device according to claim 1, 2, or 5, characterized in that, An L-shaped detection tube (17) is provided at the outlet end of the filter box (10) near the L-shaped air inlet pipe (6). A pressure measuring device is provided inside the L-shaped detection tube (17). An alarm (16) is provided on the outer wall of the filter box (10). The alarm (16) is electrically connected to the pressure measuring device.

7. A liquid chlorine filtration device according to claim 6, characterized in that, The L-shaped detection tube (17) is located in the gap between the bottom surface of the filter box (10) and the first annular support (13).

8. A liquid chlorine filtration device according to claim 7, characterized in that, The pressure measuring device includes a piston cavity (36) disposed in an L-shaped detection tube (17), a piston plate (27) is slidably installed in the piston cavity (36), a piston rod (29) is fixedly disposed on the piston plate (27), a second detection contact (35) is fixedly disposed at the end of the piston rod (29), an elastic component (28) is disposed between the piston plate (27) and the piston cavity (36), a second support (31) is disposed at the upper end of the L-shaped detection tube (17), and a first detection contact (33) corresponding to the second detection contact (35) is disposed on the second support (31).

9. A liquid chlorine filtration device according to claim 8, characterized in that, A third annular bracket (30) is fixedly installed inside the piston cavity (36). The elastic component (28) is movably fitted on the piston rod (29). One end of the elastic component (28) is connected and fixed to the piston plate (27), and the other end is connected and fixed to the third annular bracket (30). The piston rod (29) slides through the third annular bracket (30).

10. A liquid chlorine filtration device according to claim 9, characterized in that, A first bracket (18) is fixedly installed on the outer wall of the L-shaped detection tube (17). A screw hole (19) is opened on the first bracket (18). The second bracket (31) is connected to the first detection contact (33) through a connecting rod (32). The connecting rod (32) is slidably installed in the piston cavity (36). An adjusting bolt (34) is rotatably installed on the second bracket (31). The adjusting bolt (34) is threaded in the screw hole (19).

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