Lead-acid battery acid waste gas recovery and treatment equipment and method

Abstract

The present invention discloses a lead-acid battery acid waste gas recovery and treatment device and method, and relates to the battery production and waste gas treatment technical fields. In the present invention: a waste gas treatment tank, an adsorption filter component, a waste gas temporary storage area, a waste gas circulation area, etc. The air inlet pipe is provided with a first electrically controlled valve, and the air outlet pipe is provided with a fourth electrically controlled valve. The waste gas temporary storage area has a movable first piston plate and a first telescopic mechanism driving it, and the waste gas circulation area has a slidable second piston plate and a corresponding second telescopic mechanism. The waste gas treatment tank is connected to the first and second circulation pipes, which are respectively connected to the top of the waste gas temporary storage area and the bottom of the waste gas circulation area, and are equipped with second and third electrically controlled valves. The first circulation pipe is connected to the buffer tank, and the bottom of the waste gas temporary storage area and the top of the waste gas circulation area are respectively provided with the first and second distance sensor modules. The present invention effectively avoids the overflow of a large amount of acid waste gas, ensures the safety of the working environment, and can also re-filter the waste gas before replacing the adsorption filter component to prevent the excessive waste gas from being discharged into the downstream process.

Description

Technical Field

[0001] The invention relates to the technical field of battery production and waste gas treatment, and in particular to a lead-acid battery acid waste gas recovery and treatment device and method. Background Art

[0002] Batteries that use acidic aqueous solutions as electrolytes are collectively referred to as acid batteries, of which the most typical are lead-acid batteries. The electrodes of lead-acid batteries are mainly made of lead and its oxides, and the electrolyte is sulfuric acid solution. When the lead-acid battery is in the discharge state, the main component of the positive electrode is lead dioxide, and the main component of the negative electrode is lead; when it is in the charging state, the main components of the positive and negative electrodes are both lead sulfate. In the process of recycling used batteries, a large amount of acidic waste gas containing heavy metals and organic and inorganic harmful waste gas will be generated.

[0003] Existing dust removal and purification equipment mainly extracts the air in the environment of lead-acid battery crushing and separation, filters it with a filter, and adds adsorption materials, such as activated carbon, to the filter to filter out some of the harmful gases and dust. However, during gas adsorption filtration, it is not easy to grasp the adsorption saturation of activated carbon in real time. After the activated carbon is saturated, the filtering effect on the exhaust gas is reduced.

[0004] The existing treatment method is to set up an exhaust gas detection component inside the box. When the exhaust gas detection component detects that the concentration of the exhaust gas after filtration does not meet the standard, it means that the activated carbon is close to adsorption saturation, the control device is shut down, and then the filter plate is replaced.

[0005] The existing method requires that the filter be replaced alternately after the machine is shut down. However, during the process of replacing the filter, the unfiltered exhaust gas upstream of the filter in the box is directly mixed with the filtered gas downstream of the filter in the box. After the filter is reinstalled, the gas downstream of the filter is already mixed with the unfiltered exhaust gas. In addition, a large amount of exhaust gas in the box will directly overflow, causing damage to the external environment and even the health of the technicians who replace the filter.

[0006] In the face of the above situation, how to avoid a large amount of gas mixing upstream and downstream of the filter when replacing the filter, and at the same time avoid a large amount of acidic waste gas overflowing when replacing the filter and ensure the safety of the external working environment, has become a problem that needs to be solved. Summary of the invention

[0007] In order to solve the above technical problems, the present invention provides a lead-acid battery acid waste gas recovery and treatment device and method, thereby avoiding a large amount of acid waste gas overflowing into the external environment, ensuring the safety of the external working environment, and realizing re-filtration of the waste gas before replacement after the adsorption filter component is replaced, avoiding a large amount of waste gas exceeding the standard from being directly discharged into the downstream process.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A lead-acid battery acid waste gas recovery and treatment device comprises a waste gas treatment tank, an adsorption filter component inserted in the waste gas treatment tank, a waste gas temporary storage area located on the upstream side of the adsorption filter component, a waste gas circulation area located on the downstream side of the adsorption filter component, an air inlet pipe connected to the waste gas temporary storage area, and an air outlet pipe connected to the waste gas circulation area, wherein the air inlet pipe is provided with a first electrically controlled valve, and the air outlet pipe is provided with a fourth electrically controlled valve.

[0010] A first piston plate is movably arranged in the exhaust gas temporary storage area, a first telescopic mechanism for driving the first piston plate to move vertically is fixedly arranged on the outside of the exhaust gas treatment tank, a second piston plate is slidably arranged in the exhaust gas circulation area, and a second telescopic mechanism for driving the second piston plate to move vertically is fixedly arranged on the top of the exhaust gas treatment tank.

[0011] The exhaust gas treatment tank is connected to a first flow pipe connected to the top area of ​​the exhaust gas temporary storage area and a second flow pipe connected to the bottom area of ​​the exhaust gas flow area. The first flow pipe is equipped with a second electric-controlled valve, and the second flow pipe is equipped with a third electric-controlled valve. The second flow pipe is connected to the first flow pipe, and one end of the first flow pipe is connected to a cache tank.

[0012] A concentration sensor for detecting the concentration of exhaust gas components is arranged in the exhaust gas circulation area, a first distance sensor module for detecting the vertical movement distance of the first piston plate upward is arranged at the bottom of the exhaust gas temporary storage area, and a second distance sensor module for detecting the movement distance of the second piston plate downward is arranged at the top of the exhaust gas circulation area.

[0013] As a preferred technical solution of the present invention, an opening structure for inserting an adsorption filter assembly is provided on one side panel of the waste gas treatment tank, a sealing ring structure that cooperates with each other is arranged between the adsorption filter assembly and the opening structure, a limiting plate for limiting the insertion of the adsorption filter assembly is provided on the inner wall of the waste gas treatment tank, a push-pull handle is provided on the outside of the adsorption filter assembly, and the second air inlet is located below the adsorption filter assembly and directly opposite to the middle position of the two limiting plates.

[0014] As a preferred technical solution of the present invention, the position where the air intake pipe is connected to the exhaust gas treatment tank is the first air intake port, and the horizontal position of the lowest point of the vertical travel range of the first piston plate is lower than the horizontal position of the first air intake port.

[0015] As a preferred technical solution of the present invention, the position where the first circulation pipe is connected to the exhaust gas treatment tank is the second air inlet, and the horizontal position of the highest point of the vertical stroke range of the first piston plate is lower than the horizontal position of the second air inlet.

[0016] As a preferred technical solution of the present invention, a base plate is fixedly installed at the bracket position below the exhaust gas treatment tank, the first telescopic mechanism is fixedly installed above the base plate, and a lifting shaft rod is arranged at the output end of the first telescopic mechanism. The lifting shaft rod moves upward and penetrates the base plate of the exhaust gas treatment tank, and the upper side end of the lifting shaft rod is fixedly connected to the first piston plate.

[0017] As a preferred technical solution of the present invention, the first piston plate and the second piston plate are provided with piston ring structures which are in sliding and extrusion contact with the inner wall of the exhaust gas treatment tank on the ring side.

[0018] As a preferred technical solution of the present invention, the position where the air outlet pipe is connected to the exhaust gas treatment tank is an exhaust port, the exhaust port is connected to the top of the exhaust gas flow area, and the concentration sensor is installed at the inner side of the exhaust port.

[0019] As a preferred technical solution of the present invention, the connecting position end of the second flow pipe and the first flow pipe is located between the second electric control valve and the cache tank.

[0020] The present invention provides a method for using a lead-acid battery acid waste gas recovery and treatment device, comprising the following steps:

[0021] S1. The acid waste gas is passed from the air inlet pipe into the waste gas temporary storage area in the waste gas treatment tank, and the concentration sensor starts working. The concentration of the acid waste gas that can be discharged to the downstream process of the waste gas treatment tank is set to N 标 .

[0022] After the harmful gases and impurities are adsorbed by the adsorption and filtration components, the gas flows to the waste gas circulation area, and the concentration of the acid waste gas flowing into the waste gas circulation area is N1.

[0023] S2. When N1≤N 标 The acid waste gas in the waste gas circulation area is directly discharged from the outlet pipe.

[0024] S3. When N1>N 标 , close the first electrically controlled valve and the fourth electrically controlled valve, open the second electrically controlled valve and the third electrically controlled valve, and start the first distance sensing module and the second distance sensing module.

[0025] S3.1. The first telescopic mechanism drives the first piston plate upward to the top position of the travel range, and the second telescopic mechanism drives the second piston plate downward to the lowest point of the travel range, squeezing the acid waste gas in the waste gas temporary storage area and the waste gas circulation area into the buffer tank.

[0026] S3.2. Close the second and third electrically controlled valves, and the staff will pull out the adsorption filter assembly, and then insert a new adsorption filter assembly into the exhaust gas treatment tank.

[0027] S3.3. After the new adsorption and filtration assembly is installed, the second electrically controlled valve is opened and the third electrically controlled valve remains closed. The first telescopic mechanism is first started in reverse, and the first telescopic mechanism drives the first piston plate to move down to the lowest point of the travel range. Then, the second telescopic mechanism drives the second piston plate to move up to the top of the travel range, and the acid waste gas cached in the buffer tank is sucked back into the waste gas temporary storage area, and gradually enters the waste gas circulation area through the new adsorption and filtration assembly, and the second electrically controlled valve is closed.

[0028] S4. Open the first and fourth electrically controlled valves, and the acid waste gas flows from the air inlet pipe into the waste gas temporary storage area, passes through the adsorption and filtration components, flows into the waste gas circulation area, and is then discharged from the air outlet pipe to the downstream processing process.

[0029] The present invention provides a lead-acid battery acid waste gas recovery and treatment device and method, which has the following beneficial effects:

[0030] 1. The present invention sets an air inlet pipe and an air outlet pipe, and the acid waste gas flows into the waste gas treatment tank from the air inlet pipe and passes through the adsorption and filtration component. When the concentration sensor detects that the concentration of the acid waste gas is lower than the specified dischargeable concentration, the acid waste gas can be directly discharged from the air outlet pipe. When the concentration of the acid waste gas is higher than the specified dischargeable concentration and the purification efficiency of the adsorption and filtration component does not meet the standard, the first telescopic mechanism drives the first piston plate, and the second telescopic mechanism drives the second piston plate to guide the acid waste gas from the waste gas temporary storage area and the waste gas circulation area into the buffer tank, and then the adsorption and filtration component is replaced. In this way, a large amount of acid waste gas will not overflow into the external environment, thereby ensuring the safety of the external working environment.

[0031] 2. In the present invention, after the adsorption filter component is replaced, the first piston plate is first driven in reverse through the first telescopic mechanism to make the acid waste gas in the buffer tank flow into the waste gas temporary storage area, and then the second piston plate is driven in reverse through the second telescopic mechanism. The waste gas in the waste gas temporary storage area is filtered by the new adsorption filter component and enters the waste gas circulation area, and then is discharged from the outlet pipe, thereby realizing the re-filtration of the waste gas before replacement after the adsorption filter component is replaced, avoiding a large amount of waste gas exceeding the standard from being directly discharged into the downstream process. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0033] Figure 2 It is a schematic diagram of the cross-sectional structure of the waste gas treatment tank of the present invention.

[0034] Figure 3 It is a schematic diagram of the cross section of the waste gas treatment tank and the explosion structure of the adsorption and filtration component of the present invention.

[0035] Figure 4 It is a structural schematic diagram of the first piston plate of the present invention being located at an initial position.

[0036] Figure 5 It is a schematic structural diagram of the first piston plate of the present invention being located at the farthest position within the travel range.

[0037] In the figure: 1. waste gas treatment tank, 101. first air inlet, 102. second air inlet, 103. exhaust port, 104. waste gas circulation area, 105. waste gas temporary storage area, 106. opening structure; 2. bottom plate; 3. first telescopic mechanism; 4. air inlet pipe; 5. first circulation pipe; 6. air outlet pipe; 7. first electric-controlled valve; 8. second electric-controlled valve; 9. third electric-controlled valve; 10. first piston plate; 11. limit plate; 12. adsorption filter assembly, 1201. push-pull handle; 13. lifting shaft; 14. second circulation pipe; 15. concentration sensor; 16. first distance sensor module; 17. second telescopic mechanism, 1701. second piston plate; 18. cache tank; 19. fourth electric-controlled valve; 20. second distance sensor module. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0039] Embodiment 1: The present invention designs a lead-acid battery acid waste gas recovery and treatment device, the main structure configuration is as follows:

[0040] Reference Figure 1 , Figure 2 and Figure 4 , an exhaust gas treatment tank 1 is provided, an adsorption filter assembly 12 is arranged inside the exhaust gas treatment tank 1, an exhaust gas temporary storage area 105 is provided in the upstream area of ​​the adsorption filter assembly 12, and an exhaust gas circulation area 104 is provided in the downstream area. The exhaust gas temporary storage area 105 is connected to the air inlet pipe 4, and the exhaust gas circulation area 104 is connected to the air outlet pipe 6. The air inlet pipe 4 is equipped with a first electric control valve 7, and the air outlet pipe 6 is equipped with a fourth electric control valve 19. An opening structure 106 for inserting and installing the adsorption filter assembly 12 is opened at one side plate of the exhaust gas treatment tank 1, and a mutually adapted sealing ring structure is installed between the adsorption filter assembly 12 and the opening structure 106, and a push-pull handle 1201 is provided on the outside of the adsorption filter assembly 12.

[0041] Combination Figure 2 and Figure 3From the perspective of the exhaust gas temporary storage area 105, the first piston plate 10 is flexibly arranged, and the annular side of the first piston plate 10 is provided with a piston ring structure that is in sliding and extruding contact with the inner wall of the exhaust gas treatment tank 1. A first telescopic mechanism 3 for driving the first piston plate 10 to move in the vertical direction is fixedly arranged on the outside of the exhaust gas treatment tank 1, and a bottom plate 2 is fixedly installed on the bracket part below the exhaust gas treatment tank 1, and the first telescopic mechanism 3 is fixed above the bottom plate 2. A lifting shaft 13 is installed at the output end of the first telescopic mechanism 3, and the lifting shaft 13 moves upward through the bottom plate of the exhaust gas treatment tank 1, and its upper end is fixedly connected to the first piston plate 10. A second piston plate 1701 is slidably arranged in the exhaust gas circulation area 104, and the annular side of the second piston plate 1701 is also provided with a piston ring structure that is in sliding and extruding contact with the inner wall of the exhaust gas treatment tank 1. A second telescopic mechanism 17 for driving the second piston plate 1701 to move vertically is fixedly arranged on the top of the exhaust gas treatment tank 1. The point where the air intake pipe 4 is connected to the exhaust gas treatment tank 1 is the first air intake port 101 , and the horizontal position of the lowest point of the vertical travel range of the first piston plate 10 is lower than the horizontal position of the first air intake port 101 .

[0042] Combination Figure 4 and Figure 5 It can be seen that the exhaust gas treatment tank 1 is connected to the first flow pipe 5 and the second flow pipe 14, the first flow pipe 5 is equipped with a second electric control valve 8, and the second flow pipe 14 is equipped with a third electric control valve 9. The first flow pipe 5 is connected to the top area of ​​the exhaust gas temporary storage area 105, the second flow pipe 14 is connected to the bottom area of ​​the exhaust gas circulation area 104, and the first flow pipe 5 and the second flow pipe 14 are connected to each other, one end of the first flow pipe 5 is connected to the buffer tank 18, and the position where the second flow pipe 14 is connected to the first flow pipe 5 is between the second electric control valve 8 and the buffer tank 18. The place where the first flow pipe 5 is connected to the exhaust gas treatment tank 1 is the second air inlet 102, and the horizontal position of the highest point of the vertical stroke range of the first piston plate 10 is lower than the horizontal position of the second air inlet 102. The inner wall of the exhaust gas treatment tank 1 is provided with a limit plate 11 for limiting and inserting the adsorption filter assembly 12, and the second air inlet 102 is located below the adsorption filter assembly 12 and facing the middle position of the two limit plates 11. The exhaust gas circulation area 104 is equipped with a concentration sensor 15 for detecting the concentration of exhaust gas components. The exhaust port 103 is connected to the exhaust gas treatment tank 1. The exhaust port 103 is connected to the top of the exhaust gas circulation area 104. The concentration sensor 15 is installed at the inner side of the exhaust port 103. The bottom of the exhaust gas temporary storage area 105 is equipped with a first distance sensor module 16 for detecting the vertical movement distance of the first piston plate 10 upwards, and the top of the exhaust gas circulation area 104 is equipped with a second distance sensor module 20 for detecting the movement distance of the second piston plate 1701 downwards.

[0043] Embodiment 2: In the present invention, a method for using a lead-acid battery acid waste gas recovery and treatment device, the specific working principle is as follows:

[0044] First, the acid waste gas is passed from the air inlet pipe 4 into the waste gas temporary storage area 105 in the waste gas treatment tank 1, and the concentration sensor 15 starts to work. The concentration of the acid waste gas that can be discharged to the downstream process of the waste gas treatment tank 1 is set to N 标 After the harmful gases and impurities are adsorbed by the adsorption filter component 12, the gas flows to the waste gas flow area 104, and the concentration of the acid waste gas flowing into the waste gas flow area 104 is N1.

[0045] Case 1: When N1 is less than or equal to N 标 The filtered acid waste gas reaches the specified dischargeable concentration, and the acid waste gas in the waste gas circulation area 104 can be directly discharged from the outlet pipe 6.

[0046] Case 2: When N1 is greater than N 标 The concentration of the acid waste gas after filtration is higher than the specified dischargeable concentration, indicating that the activated carbon in the adsorption filter component 12 is close to saturation, and the adsorption effect on the acid waste gas is reduced. The adsorption filter component 12 needs to be replaced. The system controls the first electrically controlled valve 7 and the fourth electrically controlled valve 19 to be closed, and starts the first distance sensor module 16 and the second distance sensor module 20.

[0047] Then, the second electrically controlled valve 8 and the third electrically controlled valve 9 are opened, the first telescopic mechanism 3 and the lifting shaft 13 push the first piston plate 10 to move, and the second telescopic mechanism 17 pushes the second piston plate 1701 to move, squeezing the acid waste gas in the waste gas temporary storage area 105 and the waste gas circulation area 104 into the buffer tank 18.

[0048] When the first piston plate 10 moves up to the top position of the stroke range, that is, the adsorption filter assembly 12 abuts against the limit plate 11, and the second piston plate 1701 moves down to the lowest point of the stroke range, the system controls the first telescopic mechanism 3 and the second telescopic mechanism 17 to stop working, and the second electrically controlled valve 8 and the third electrically controlled valve 9 are closed. At this time, the acid waste gas in the waste gas temporary storage area 105 and the waste gas circulation area 104 has been squeezed into the buffer tank 18. The staff will pull out the adsorption filter assembly 12, and then insert the new adsorption filter assembly 12 into the waste gas treatment tank 1. In this process, the gas in the waste gas treatment tank 1 has been squeezed into the buffer tank 18 and will not escape into the outside air to cause air pollution.

[0049] Next, the system controls the second electrically controlled valve 8 to open and the third electrically controlled valve 9 to remain closed, and first reversely starts the first telescopic mechanism 3, which drives the first piston plate 10 to move down to the lowest point of the travel range. During the movement of the first piston plate 10, the acid liquid waste gas in the buffer tank 18 will flow into the waste gas treatment tank 1 from the first circulation pipe 5, and then the second telescopic mechanism 17 drives the second piston plate 1701 to move up to the top position of the travel range, and the acid liquid waste gas cached in the buffer tank 18 is sucked back into the waste gas temporary storage area 105, and gradually enters the waste gas circulation area 104 through the new adsorption filter component 12, and the second electrically controlled valve 8 is closed.

[0050] The first electrically controlled valve 7 and the fourth electrically controlled valve 19 are opened, and the acid waste gas flows from the air inlet pipe 4 into the waste gas temporary storage area 105 , passes through the new adsorption filter component 12 and flows into the waste gas circulation area 104 , and is then discharged from the air outlet pipe 6 .

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lead-acid battery acid waste gas recovery and treatment device, comprising a waste gas treatment tank (1), an adsorption filter assembly (12) inserted in the waste gas treatment tank (1), a waste gas temporary storage area (105) located on the upstream side of the adsorption filter assembly (12), a waste gas circulation area (104) located on the downstream side of the adsorption filter assembly (12), an air inlet pipe (4) connected to the waste gas temporary storage area (105), and an air outlet pipe (6) connected to the waste gas circulation area (104), wherein the air inlet pipe (4) is provided with a first electric control valve (7), and the air outlet pipe (6) is provided with a fourth electric control valve (19), characterized in that: A first piston plate (10) is movably arranged in the exhaust gas temporary storage area (105), a first telescopic mechanism (3) for driving the first piston plate (10) to move vertically is fixedly arranged on the outside of the exhaust gas treatment tank (1), a second piston plate (1701) is slidably arranged in the exhaust gas circulation area (104), and a second telescopic mechanism (17) for driving the second piston plate (1701) to move vertically is fixedly arranged on the top of the exhaust gas treatment tank (1); The exhaust gas treatment tank (1) is connected to a first flow pipe (5) connected to the top area of ​​the exhaust gas temporary storage area (105) and a second flow pipe (14) connected to the bottom area of ​​the exhaust gas flow area (104); the first flow pipe (5) is provided with a second electrically controlled valve (8); the second flow pipe (14) is provided with a third electrically controlled valve (9); the second flow pipe (14) is connected to the first flow pipe (5); and one end of the first flow pipe (5) is connected to a buffer tank (18); A concentration sensor (15) for detecting the concentration of exhaust gas components is arranged in the exhaust gas circulation area (104), a first distance sensor module (16) for detecting the vertical movement distance of the first piston plate (10) upward is arranged at the bottom of the exhaust gas temporary storage area (105), and a second distance sensor module (20) for detecting the movement distance of the second piston plate (1701) downward is arranged at the top of the exhaust gas circulation area (104).

2. A lead-acid battery acid waste gas recovery and treatment equipment according to claim 1, characterized in that: A side plate of the waste gas treatment tank (1) is provided with an opening structure (106) for inserting an adsorption filter assembly (12); a sealing ring structure that cooperates with the adsorption filter assembly (12) and the opening structure (106); an inner wall of the waste gas treatment tank (1) is provided with a limiting plate (11) for limiting the insertion of the adsorption filter assembly (12); and a push-pull handle (1201) is provided on the outer side of the adsorption filter assembly (12); The position where the first flow pipe (5) is connected to the exhaust gas treatment tank (1) is a second air inlet (102), and the horizontal position of the highest point in the vertical travel range of the first piston plate (10) is lower than the horizontal position of the second air inlet (102); The second air inlet (102) is located below the adsorption filter assembly (12) and directly opposite to the middle position of the two limiting plates (11).

3. A lead-acid battery acid waste gas recovery and treatment equipment according to claim 1, characterized in that: The position where the air intake pipe (4) is connected to the exhaust gas treatment tank (1) is a first air intake port (101), and the horizontal position of the lowest point in the vertical travel range of the first piston plate (10) is lower than the horizontal position of the first air intake port (101).

4. A lead-acid battery acid waste gas recovery and treatment equipment according to claim 1, characterized in that: A bottom plate (2) is fixedly mounted at the bracket position below the exhaust gas treatment tank (1), and the first telescopic mechanism (3) is fixedly mounted above the bottom plate (2); The output end of the first telescopic mechanism (3) is provided with a lifting shaft (13), the lifting shaft (13) moves upward and penetrates the bottom plate of the exhaust gas treatment tank (1), and the upper side end of the lifting shaft (13) is fixedly connected to the first piston plate (10).

5. The lead-acid battery acid waste gas recovery and treatment equipment according to claim 1, characterized in that: The first piston plate (10) and the second piston plate (1701) are provided with piston ring structures on the ring sides thereof, which are in sliding and extrusion contact with the inner wall of the exhaust gas treatment tank (1).

6. A lead-acid battery acid waste gas recovery and treatment equipment according to claim 1, characterized in that: The position where the exhaust pipe (6) is connected to the exhaust gas treatment tank (1) is an exhaust port (103), the exhaust port (103) is connected to the top of the exhaust gas flow area (104), and the concentration sensor (15) is installed at a position inside the exhaust port (103).

7. The lead-acid battery acid waste gas recovery and treatment equipment according to claim 1, characterized in that: The communication position between the second flow pipe (14) and the first flow pipe (5) is located between the second electric control valve (8) and the buffer tank (18).

8. A method for using a lead-acid battery acid waste gas recovery and treatment device, characterized in that: A lead-acid battery acid waste gas recovery and treatment device according to any one of claims 1 to 7 comprises the following steps: S1. The acid waste gas is passed from the air inlet pipe (4) into the waste gas temporary storage area (105) in the waste gas treatment tank (1), and the concentration sensor (15) starts to work. It is assumed that the concentration of the acid waste gas that can be discharged to the downstream process of the waste gas treatment tank (1) is N 标 ; After the harmful gas and impurities are adsorbed by the adsorption filter component (12), the gas flows into the waste gas circulation area (104), and the concentration of the acid waste gas flowing into the waste gas circulation area (104) is N1; S2. When N1≤N 标 , the acid waste gas in the waste gas circulation area (104) is directly discharged from the outlet pipe (6); S3. When N1>N 标 , closing the first electrically controlled valve (7) and the fourth electrically controlled valve (19), opening the second electrically controlled valve (8) and the third electrically controlled valve (9), and starting the first distance sensing module (16) and the second distance sensing module (20); S3.

1. The first telescopic mechanism (3) drives the first piston plate (10) to move upward to the top position of the travel range, and the second telescopic mechanism (17) drives the second piston plate (1701) to move downward to the lowest point of the travel range, so that the acid waste gas in the waste gas temporary storage area (105) and the waste gas circulation area (104) is squeezed into the buffer tank (18); S3.

2. Close the second electrically controlled valve (8) and the third electrically controlled valve (9), and the staff extracts the adsorption filter assembly (12), and then inserts a new adsorption filter assembly (12) into the exhaust gas treatment tank (1); S3.

3. After the new adsorption filter assembly (12) is installed, the second electrically controlled valve (8) is opened and the third electrically controlled valve (9) is kept closed. The first telescopic mechanism (3) is first started in reverse, and the first telescopic mechanism (3) drives the first piston plate (10) to move down to the lowest point of the travel range. Then, the second telescopic mechanism (17) drives the second piston plate (1701) to move up to the top of the travel range, and the acid waste gas cached in the cache tank (18) is sucked back to the waste gas temporary storage area (105), and gradually enters the waste gas circulation area (104) through the new adsorption filter assembly (12). The second electrically controlled valve (8) is closed; S4. The first electrically controlled valve (7) and the fourth electrically controlled valve (19) are opened, and the acid waste gas flows from the air inlet pipe (4) into the waste gas temporary storage area (105), passes through the adsorption filter component (12) and flows into the waste gas circulation area (104), and is then discharged from the air outlet pipe (6) to the downstream processing process.

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