Spray type reaction tower for industrial waste gas treatment

Abstract

The utility model relates to the technical field of industrial waste gas treatment, and provides an industrial waste gas treatment spraying type reaction tower which comprises a reaction tower body and a liquid storage barrel, the reaction tower body communicates with the liquid storage barrel through a liquid inlet pipe, a fourth driving part is arranged on the liquid inlet pipe, a cover plate is detachably installed on the liquid storage barrel, and a liquid adding pipe and a chemical adding pipe are arranged in the cover plate; a stirring shaft is rotatably mounted on the cover plate, a stirring rod is fixedly arranged on the stirring shaft, a first driving part is detachably mounted on the cover plate, the first driving part is in transmission connection with the stirring shaft, and the first driving part is started to drive the stirring rod through the stirring shaft to fully mix the medicament and water in the liquid storage barrel; the waste gas treatment device disclosed by the utility model has the beneficial effects that the first driving part is started to drive the stirring rod through the stirring shaft to fully mix a medicament and water in the liquid storage barrel, and a mixed medicament solution enters the reaction tower through the liquid inlet pipe, so that the waste gas treatment quality is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of industrial waste gas treatment, and particularly relates to a spray reaction tower for industrial waste gas treatment. Background Art

[0002] A spray tower is an absorption tower provided with nozzles. The liquid enters from the top of the tower and is sprayed into a mist or raindrop shape through the nozzles. The gas enters from the lower part of the tower and comes into close contact with the mist or raindrop-shaped liquid for mass transfer, so that the easily soluble components in the gas are absorbed. The dust removal spray tower is generally used for industrial dust removal or waste gas treatment. It is a device that purifies various toxic and harmful waste gases by adopting a wet treatment method according to different waste gases. By adding a medicament into the liquid storage barrel and transporting the medicament and water into the reaction tower, waste gas treatment is realized.

[0003] However, after adding the medicament into the liquid storage barrel, stirring cannot be carried out, resulting in insufficient mixing of the medicament. Thus, the insufficiently mixed liquid medicine is transported into the reaction tower, reducing the effect of waste gas treatment.

[0004] Therefore, in view of the deficiencies in the actual production and implementation of the above scheme, it is corrected and improved. Meanwhile, in the spirit of seeking excellence and with the assistance of professional knowledge and experience, and after various ingenious ideas and tests, the present utility model is created. Specifically, a spray reaction tower for industrial waste gas treatment is provided herein to solve the above technical problems. Summary of the Utility Model

[0005] The utility model provides a spray reaction tower for industrial waste gas treatment, which solves the problems in the prior art.

[0006] The technical solution of the utility model is realized as follows: A spray reaction tower for industrial waste gas treatment includes a reaction tower and a liquid storage barrel. The reaction tower and the liquid storage barrel are communicated through a liquid inlet pipe. A fourth driving component is arranged on the liquid inlet pipe. Starting the fourth driving component inputs the solution in the liquid storage barrel into the reaction tower through the liquid inlet pipe. It is characterized in that: A cover plate is detachably installed on the liquid storage barrel. A liquid adding pipe and a medicine adding pipe are arranged in the cover plate. A stirring shaft is rotatably installed on the cover plate. Stirring rods are fixedly arranged on the stirring shaft. A first driving component is detachably installed on the cover plate. The first driving component is in transmission connection with the stirring shaft. Starting the first driving component drives the stirring rods through the stirring shaft to fully mix the medicament and water in the liquid storage barrel.

[0007] During the use of the above technical solution: Starting the first driving component drives the stirring rods through the stirring shaft to fully mix the medicament and water in the liquid storage barrel. The mixed medicament solution enters the reaction tower through the liquid inlet pipe, improving the quality of waste gas treatment.

[0008] Preferably, a liquid discharge pipe is fixedly arranged on the liquid storage barrel, a liquid inlet pipe is fixedly arranged on the reaction tower, and the liquid discharge pipe and the liquid inlet pipe are communicated through a fourth driving component.

[0009] Preferably, internal threads are provided on the cover plate, external threads are provided on the liquid storage barrel, and the cover plate and the liquid storage barrel are connected and fixed by screwing the internal threads and the external threads.

[0010] Preferably, a second driving component is installed on the liquid adding pipe. When the second driving component is started, water is added into the liquid storage barrel through the liquid adding pipe. A third driving component is installed on the chemical adding pipe. When the third driving component is started, chemicals are added into the liquid storage barrel.

[0011] Preferably, a controller is detachably installed on the cover plate. The second driving component and the third driving component are electrically connected to the controller. When the controller is started, the adding amounts of water and chemicals are controlled through the second driving component and the third driving component.

[0012] By controlling the starting time of the second driving component and the third driving component through the controller, the quantitative addition of water and chemicals is realized, thereby reducing the labor intensity and improving the working efficiency.

[0013] Preferably, a sealed cavity is fixedly arranged on the liquid storage barrel. The sealed cavity is communicated with the liquid storage barrel. A floating body is movably installed in the sealed cavity. A sliding rod is fixedly arranged on the floating body, and the sliding rod is sealingly and slidably installed on the sealed cavity.

[0014] The solution pushes the floating body to move in the sealed cavity. The floating body drives the sliding rod to move up and down. By observing the moving distance of the sliding rod, the amount of the solution in the liquid storage barrel is judged.

[0015] Preferably, a first through hole is provided on the sealed cavity, and the sliding rod is sealingly and slidably installed in the first through hole.

[0016] Preferably, a connecting rod is fixedly arranged on the sliding rod. A detection component is detachably installed on the liquid storage barrel. The detection component corresponds to the connecting rod. The floating body drives the connecting rod to move through the sliding rod, and the automatic detection of the amount of the solution in the liquid storage barrel is realized through the connecting rod and the detection component.

[0017] The solution pushes the floating body to move up and down. The floating body drives the connecting rod to move through the sliding rod. When the connecting rod contacts the detection component, the automatic detection function of the solution in the liquid storage barrel is realized, and the second driving component and the third driving component are started through the controller to realize the functions of automatic water addition and chemical addition.

[0018] Preferably, the detection assembly includes a detection cavity detachably installed on the liquid storage barrel. A first detection contact is provided on the detection cavity. A piston is slidably installed in the detection cavity. A second detection contact is detachably installed on the piston. The first detection contact corresponds to the second detection contact. A second elastic member is provided between the piston and the detection cavity. The connecting rod corresponds to the piston;

[0019] The piston is pushed by the connecting rod to move along the detection cavity to bring the first detection contact into contact with the second detection contact, thereby realizing the automatic detection of the solution in the liquid storage barrel and transmitting the detection signal to the controller.

[0020] Preferably, a first elastic member is movably installed on the sliding rod. One end of the first elastic member is fixedly connected to the sliding rod, and the other end of the first elastic member is fixedly connected to the sealing cavity;

[0021] The solution stretches the first elastic member through the floating body and makes the connecting rod move away from the piston. When the solution in the liquid storage barrel reaches the set amount, the floating body is pushed down by the first elastic member. The floating body drives the connecting rod to move down, so that the connecting rod pushes the second detection contact on the piston to contact the first detection contact, improving the stability of the movement of the floating body.

[0022] After adopting the above technical solutions, the beneficial effects of the present utility model are as follows:

[0023] 1. Start the first driving member to drive the stirring rod through the stirring shaft to fully mix the medicament and water in the liquid storage barrel. The mixed medicament solution enters the reaction tower through the liquid inlet pipe, improving the quality of waste gas treatment;

[0024] 2. Control the start time of the second driving member and the third driving member through the controller to achieve the quantitative addition of water and medicament, thereby reducing the labor intensity and improving the work efficiency;

[0025] 3. The solution pushes the floating body to move up and down. The floating body drives the connecting rod to move through the sliding rod. When the connecting rod contacts the detection assembly, the function of automatically detecting the solution in the liquid storage barrel is realized, and the second driving member and the third driving member are controlled by the controller to start, realizing the functions of automatically adding water and medicament. Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1Isometric view of the present utility model;

[0028] Figure 2 Isometric view of the reaction tower of the present utility model;

[0029] Figure 3 Isometric view of the liquid storage barrel of the present utility model;

[0030] Figure 4 Exploded view of the liquid storage barrel of the present utility model;

[0031] Figure 5 Installation schematic diagram of the stirring rod of the present utility model;

[0032] Figure 6 Structural schematic diagram of the liquid storage barrel of the present utility model;

[0033] Figure 7 Exploded view of the connecting rod and the detection component of the present utility model;

[0034] Figure 8 Isometric view of the detection component of the present utility model;

[0035] Figure 9 Structural schematic diagram of the detection component of the present utility model;

[0036] In the figure, 1, reaction tower; 2, intake pipe; 3, exhaust pipe; 4, sewage discharge pipe; 5, liquid inlet pipe; 6, liquid storage barrel; 7, external thread; 8, cover plate; 9, internal thread; 10, stirring shaft; 11, stirring rod; 12, first driving component; 13, liquid adding pipe; 14, second driving component; 15, medicine adding pipe; 16, third driving component; 17, controller; 18, liquid discharge pipe; 19, fourth driving component; 20, sealed cavity; 21, first through hole; 22, sliding rod; 23, floating body; 24, first support frame; 25, first elastic component; 26, connecting rod; 27, second support frame; 28, detection component; 2801, detection cavity;

[0037] 2802, first detection contact; 2803, piston; 2804, second detection contact; 2805, detection rod; 2806, second elastic component; 2807, limit block; Detailed implementation manners

[0038] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the scope of protection of the present utility model. Embodiment

[0039] As Figures 1 to 9 shown, an industrial waste gas treatment spray reaction tower includes a reaction tower 1 and a liquid storage tank 6. The reaction tower 1 and the liquid storage tank 6 are connected through a liquid inlet pipe 5. A fourth driving component 19 is arranged on the liquid inlet pipe 5. Starting the fourth driving component 19 inputs the solution in the liquid storage tank 6 into the reaction tower 1 through the liquid inlet pipe 5. It is characterized in that: a cover plate 8 is detachably installed on the liquid storage tank 6. A liquid adding pipe 13 and a medicine adding pipe 15 are arranged in the cover plate 8. A stirring shaft 10 is rotatably installed on the cover plate 8. Stirring rods 11 are fixedly arranged on the stirring shaft 10. A first driving component 12 is detachably installed on the cover plate 8. The first driving component 12 is in transmission connection with the stirring shaft 10. Starting the first driving component 12 drives the stirring rods 11 through the stirring shaft 10 to fully mix the medicine and water in the liquid storage tank 6.

[0040] In the use process of the above technical solution: starting the first driving component 12 drives the stirring rods 11 through the stirring shaft 10 to fully mix the medicine and water in the liquid storage tank 6. The mixed medicine solution enters the reaction tower 1 through the liquid inlet pipe 5, improving the quality of waste gas treatment.

[0041] Specifically: an air inlet pipe 2, an exhaust pipe 3 and a sewage discharge pipe 4 are arranged on the reaction tower 1. The fourth driving component 19 is a high-pressure water pump, and the high-pressure water pump is installed on the liquid storage tank 6 through bolts and nuts. The first driving component 12 is a driving motor, and the driving motor is installed on the cover plate 8 through bolts and nuts. The output end of the driving motor is in transmission connection with the stirring shaft 10;

[0042] A liquid discharge pipe 18 is fixedly arranged on the liquid storage tank 6, and a liquid inlet pipe 5 is fixedly arranged on the reaction tower 1. The liquid discharge pipe 18 and the liquid inlet pipe 5 are connected and communicated through the fourth driving component 19.

[0043] During use: waste gas enters the reaction tower 1 through the air inlet pipe 2, water enters the liquid storage tank 6 through the liquid adding pipe 13, and medicine enters the liquid storage tank 6 through the medicine adding pipe 15. Starting the driving motor drives the stirring rods 11 to rotate through the stirring shaft 10. The water and medicine in the liquid storage tank 6 are fully mixed through the stirring rods 11. The mixed solution is transported to the reaction tower 1 through the high-pressure water pump, making full contact with the rising waste gas in the reaction tower 1 to achieve the treatment of waste gas. The treated gas is discharged through the exhaust pipe 3, and the generated waste liquid is stored in the reaction tower 1. When it reaches a certain amount, the sewage discharge pipe 4 is opened to discharge the waste liquid.

[0044] Internal threads 9 are provided on the cover plate 8, and external threads 7 are provided on the liquid storage tank 6. The cover plate 8 and the liquid storage tank 6 are connected and fixed through the threaded connection of the internal threads 9 and the external threads 7.

[0045] A second driving component 14 is installed on the liquid adding pipe 13. Starting the second driving component 14 adds water into the liquid storage barrel 6 through the liquid adding pipe 13. A third driving component 16 is installed on the medicine adding pipe 15. Starting the third driving component 16 adds medicine into the liquid storage barrel 6.

[0046] Specifically: The second driving component 14 is a first water pump. The water inlet of the first water pump is connected to the water storage tank through a pipe. The third driving component 16 is a second water pump. The liquid inlet of the second water pump is connected to the medicine storage tank through a pipe.

[0047] A controller 17 is detachably installed on the cover plate 8. The second driving component 14 and the third driving component 16 are electrically connected to the controller 17. Starting the controller 17 controls the adding amounts of water and medicine through the second driving component 14 and the third driving component 16.

[0048] Specifically: The controller 17 is an existing well-known technology. A timer for controlling the usage time of the second driving component 14 and the third driving component 16 is electrically connected to the controller 17.

[0049] By controlling the starting times of the second driving component 14 and the third driving component 16 through the controller 17, the quantitative addition of water and medicine is realized, thereby reducing the labor intensity and improving the work efficiency. Embodiment

[0050] As Figures 6 to 9 shown, a sealing cavity 20 is fixedly arranged on the liquid storage barrel 6. The sealing cavity 20 is communicated with the liquid storage barrel 6. A floating body 23 is movably installed in the sealing cavity 20. A sliding rod 22 is fixedly arranged on the floating body 23. The sliding rod 22 is sealingly and slidably installed on the sealing cavity 20.

[0051] A first through hole 21 is formed in the sealing cavity 20. The sliding rod 22 is sealingly and slidably installed in the first through hole 21.

[0052] A connecting rod 26 is installed on the sliding rod 22 through bolts and nuts. A detection component 28 is detachably installed on the liquid storage barrel 6. The detection component 28 corresponds to the connecting rod 26. The floating body 23 drives the connecting rod 26 to move through the sliding rod 22. The automatic detection of the solution amount in the liquid storage barrel 6 is realized through the connecting rod 26 and the detection component 28.

[0053] During use: The solution pushes the floating body 23 to move in the sealing cavity 20. The floating body 23 drives the sliding rod 22 to move up and down along the first through hole 21. When the connecting rod contacts the detection component 28, the function of automatically detecting the solution in the liquid storage barrel 6 is realized, and the second driving component 14 and the third driving component 16 are controlled to start through the controller 17, realizing the functions of automatically adding water and medicine.

[0054] The detection component 28 includes a detection cavity 2801 installed on the liquid storage barrel 6 by bolts and nuts. A first detection contact 2802 is installed on the detection cavity 2801 by screws. A piston 2803 is slidably installed in the detection cavity 2801. A second detection contact 2804 is installed on the piston 2803 by screws. The first detection contact 2802 corresponds to the second detection contact 2804. A second elastic member 2806 is provided between the piston 2803 and the detection cavity 2801. The connecting rod 26 corresponds to the piston 2803;

[0055] Specifically: A second support frame 27 is welded on the detection cavity 2801. The second support frame 27 is installed on the liquid storage barrel 6 by bolts and nuts. A detection rod 2805 is installed on the piston 2803 by screws. A limit block 2807 is installed on the detection cavity 2801 by screws. The detection rod 2805 slidably passes through the limit block 2807. The second elastic member 2806 is a first return spring. One end of the first return spring is fixedly connected to the piston 2803, and the other end of the first return spring is fixedly connected to the detection cavity 2801. The connecting rod 26 corresponds to the detection rod 2805, and the specific structure is the same as that of Embodiment 1.

[0056] By pushing the piston 2803 to move along the detection cavity 2801 through the connecting rod 26, the first detection contact 2802 is brought into contact with the second detection contact 2804, thereby realizing the automatic detection of the solution in the liquid storage barrel 6 and transmitting the detection signal to the controller 17. Embodiment

[0057] As Figure 7 shown, a first elastic member 25 is movably installed on the sliding rod 22. One end of the first elastic member 25 is fixedly connected to the sliding rod 22, and the other end of the first elastic member 25 is fixedly connected to the sealing cavity 20;

[0058] Specifically: The first elastic member 25 is a second return spring. A first support frame 24 is welded on the sliding rod 22. One end of the second return spring is welded on the first support frame 24, and the other end of the second return spring is welded on the sealing cavity 20. The remaining structure is the same as that of Embodiment 2.

[0059] The solution stretches the first elastic member 25 through the floating body 23 and makes the connecting rod 26 away from the piston 2803. When the solution in the liquid storage barrel 6 reaches the set amount, the floating body 23 is pushed downward by the first elastic member 25. The floating body 23 drives the connecting rod 26 to move downward, so that the connecting rod 26 pushes the second detection contact 2804 on the piston 2803 into contact with the first detection contact 2802, improving the stability of the movement of the floating body 23.

[0060] Working principle of the utility model: Waste gas enters the reaction tower 1 through the air inlet pipe 2, water enters the liquid storage barrel 6 through the liquid adding pipe 13, and the medicament enters the liquid storage barrel 6 through the medicine adding pipe 15. Start the driving motor to drive the stirring rod 11 to rotate through the stirring shaft 10, and fully mix the water and the medicament in the liquid storage barrel 6 through the stirring rod 11. The mixed solution is transported into the reaction tower 1 through the high-pressure water pump, and is in full contact with the rising waste gas in the reaction tower 1 to realize the treatment of the waste gas. The treated gas is discharged through the exhaust pipe 3, and the generated waste liquid is stored in the reaction tower 1. When it reaches a certain amount, open the sewage discharge pipe 4 to discharge the waste liquid;

[0061] The solution pushes the floating body 23 to move in the sealed cavity 20, and drives the sliding rod 22 to move up and down along the first through hole 21 through the floating body 23. When the connection end contacts the detection component 28, the function of automatically detecting the solution in the liquid storage barrel 6 is realized, and the second driving component 14 and the third driving component 16 are controlled by the controller 17 to start, realizing the function of automatically adding water and the medicament;

[0062] The solution stretches the first elastic member 25 through the floating body 23, and makes the connecting rod 26 away from the piston 2803. When the solution in the liquid storage barrel 6 reaches the set amount, the first elastic member 25 pushes the floating body 23 to move downward through the floating body 23, and the floating body 23 drives the connecting rod 26 to move downward, so that the connecting rod 26 pushes the second detection contact 2804 on the piston 2803 to contact the first detection contact 2802, improving the stability of the movement of the floating body 23.

[0063] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In the description of the present utility model, unless otherwise specified and limited, it should be noted that the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the communication inside two elements. It can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific situations.

[0064] The above is only a preferred embodiment of the present utility model, and it is not intended to limit the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A spray-type reaction tower for treating industrial waste gas, comprising a reaction tower (1) and a liquid storage barrel (6), wherein the reaction tower (1) and the liquid storage barrel (6) are connected via a liquid inlet pipe (5), and a fourth driving component (19) is provided on the liquid inlet pipe (5). When the fourth driving component (19) is started, the solution in the liquid storage barrel (6) is input into the reaction tower (1) via the liquid inlet pipe (5), characterized in that: The liquid storage barrel (6) is detachably mounted with a cover plate (8), a liquid adding pipe (13) and a medicine adding pipe (15) are arranged inside the cover plate (8), a stirring shaft (10) is rotatably mounted on the cover plate (8), a stirring rod (11) is fixedly arranged on the stirring shaft (10), a first driving component (12) is detachably mounted on the cover plate (8), the first driving component (12) is transmission-connected to the stirring shaft (10), and when the first driving component (12) is started, the stirring rod (11) is driven via the stirring shaft (10) to fully mix the medicine and water in the liquid storage barrel (6).

2. The industrial waste gas treatment spray reaction tower (1) according to claim 1, characterized in that: The liquid storage barrel (6) is fixedly provided with a liquid discharge pipe (18), the reaction tower (1) is fixedly provided with a liquid inlet pipe (5), and the liquid discharge pipe (18) is connected to the liquid inlet pipe (5) via a fourth driving component (19).

3. The industrial waste gas treatment spray reaction tower (1) according to claim 2, characterized in that: The cover plate (8) is provided with an internal thread (9), and the liquid storage barrel (6) is provided with an external thread (7). The cover plate (8) and the liquid storage barrel (6) are connected and fixed by threading the internal thread (9) and the external thread (7).

4. The industrial waste gas treatment spray reaction tower (1) according to claim 3, characterized in that: The liquid adding pipe (13) is provided with a second driving component (14), and water is added to the liquid storage barrel (6) through the liquid adding pipe (13) by starting the second driving component (14). The medicine adding pipe (15) is provided with a third driving component (16), and medicine is added to the liquid storage barrel (6) by starting the third driving component (16).

5. The industrial waste gas treatment spray reaction tower (1) according to claim 4, characterized in that: The cover plate (8) is detachably provided with a controller (17); the second drive component (14) and the third drive component (16) are electrically connected to the controller (17); and the controller (17) is started to control the amount of water and medicine added through the second drive component (14) and the third drive component (16).

6. The industrial waste gas treatment spray reaction tower (1) according to claim 1, characterized in that: A sealed cavity (20) is fixedly arranged on the liquid storage barrel (6), the sealed cavity (20) is communicated with the liquid storage barrel (6), a floating body (23) is movably installed in the sealed cavity (20), a sliding rod (22) is fixedly arranged on the floating body (23), and the sliding rod (22) is sealingly slidably installed on the sealed cavity (20).

7. The industrial waste gas treatment spray reaction tower (1) according to claim 6, characterized in that: The sealing cavity (20) is provided with a first through hole (21), and the sliding rod (22) is sealingly and slidably installed in the first through hole (21).

8. The industrial waste gas treatment spray reaction tower (1) according to claim 7, characterized in that: A connecting rod (26) is fixedly arranged on the sliding rod (22), and a detection assembly (28) is detachably mounted on the liquid storage barrel (6). The detection assembly (28) corresponds to the connecting rod (26), and the floating body (23) drives the connecting rod (26) to move through the sliding rod (22), and the amount of solution in the liquid storage barrel (6) is automatically detected through the connecting rod (26) and the detection assembly (28).

9. The industrial waste gas treatment spray reaction tower (1) according to claim 8, characterized in that: The detection assembly (28) comprises a detection cavity (2801) detachably mounted on a liquid storage barrel (6); a first detection contact (2802) is arranged on the detection cavity (2801); a piston (2803) is slidably mounted in the detection cavity (2801); a second detection contact (2804) is detachably mounted on the piston (2803); the first detection contact (2802) corresponds to the second detection contact (2804); a second elastic component (2806) is arranged between the piston (2803) and the detection cavity (2801); the connecting rod (26) corresponds to the piston (2803); the piston (2803) is pushed by the connecting rod (26) to move along the detection cavity (2801) so as to bring the first detection contact (2802) into contact with the second detection contact (2804).

10. The industrial waste gas treatment spray reaction tower (1) according to claim 9, characterized in that: A first elastic component (25) is movably mounted on the sliding rod (22); one end of the first elastic component (25) is fixedly connected to the sliding rod (22); the other end of the first elastic component (25) is fixedly connected to the sealing cavity (20); and the solution stretches the first elastic component (25) through the float (23).

Images