Lithium battery liquid injection organic waste gas treatment system

Abstract

The invention relates to a lithium battery liquid injection and organic waste gas treatment system, and relates to the technical field of waste gas treatment in lithium battery production, the waste gas treatment system comprises an alkali liquor spraying mechanism, a dry filter, an adsorption mechanism, a combustion mechanism and an exhaust mechanism which are connected in sequence, the alkali liquor spraying mechanism is used for spraying alkali liquor to waste gas, and the dry filter is used for filtering the waste gas; the dry filter is used for removing moisture and filtering impurities for multiple times, the adsorption mechanism and the combustion mechanism are used for adsorbing and combusting waste gas respectively, and the exhaust mechanism is used for exhausting tail gas and enabling the waste gas to flow. Waste gas is sprayed through the alkali liquor spraying mechanism, moisture and impurities in the waste gas are removed through the dry filter, then the waste gas is subjected to adsorption treatment through the adsorption mechanism, and therefore the risk that the adsorption mechanism is blocked due to the fact that the moisture and the impurities are mixed is reduced, and the waste gas is discharged after being moved to the combustion mechanism to be subjected to combustion treatment. And the waste gas treatment effect and efficiency are improved.

Description

Technical Field

[0001] The present application relates to the technical field of waste gas treatment in lithium battery production, and particularly relates to an organic waste gas treatment system for lithium battery injection and formation. Background Art

[0002] In the lithium battery injection process, a small amount of overflow solvent is discharged together with the replacement and drying air during the humidity control and dry preservation processes. The volatile waste gas mainly includes electrolyte lithium salts and volatile organic pollutants, and the treatment of waste gas is an urgent problem to be solved at present.

[0003] Electrolyte lithium salts are easily soluble in water and react to form corrosive hydrofluoric acid. The methods for treating VOCs mainly include adsorption, combustion, absorption and other technologies. In the prior art, generally, alkali liquor spraying is first used to remove hydrofluoric acid, and then the waste gas is removed by adsorption, combustion and other methods. However, the waste gas passing through the alkali liquor contains more moisture and impurities, and the mixture of moisture and impurities is likely to block the subsequent adsorption structure, thus reducing the treatment effect and efficiency of the waste gas. Summary of the Invention

[0004] In order to improve the treatment effect and efficiency of waste gas, the present application provides an organic waste gas treatment system for lithium battery injection and formation.

[0005] An organic waste gas treatment system for lithium battery injection and formation provided by the present application adopts the following technical solutions: An organic waste gas treatment system for lithium battery injection and formation includes a alkali liquor spraying mechanism, a dry filter, an adsorption mechanism, a combustion mechanism and an exhaust mechanism connected in sequence. The alkali liquor spraying mechanism is used for spraying alkali liquor on the waste gas, the dry filter is used for removing moisture and filtering impurities multiple times, the adsorption mechanism and the combustion mechanism are respectively used for adsorbing and burning the waste gas, and the exhaust mechanism is used for discharging the tail gas and making the waste gas flow.

[0006] By adopting the above technical solutions, the exhaust mechanism is started to make the waste gas flow. The waste gas is first sprayed by the alkali liquor spraying mechanism to remove electrolyte lithium salts, then the moisture and impurities in the waste gas are removed by the dry filter, and then the waste gas is subjected to adsorption treatment by the adsorption mechanism, thereby reducing the risk of blockage of the adsorption mechanism caused by the mixture of moisture and impurities. The waste gas is transferred to the combustion mechanism for combustion treatment and then discharged, improving the treatment effect and efficiency of the waste gas.

[0007] Optionally, the dry filter includes: A first conveying pipe and a second conveying pipe, which are respectively connected to the alkali liquor spraying mechanism and the adsorption mechanism; A mounting member, which is arranged at the opposite ends of the first conveying pipe and the second conveying pipe; A water removal component, arranged on the conveying pipe 1 and used for removing water from the exhaust gas; A filter mechanism is arranged on the mounting member and cooperates with the mounting member to form two filter channels that are independent of each other and connected to the first delivery pipe and the second delivery pipe, and the filter mechanism is used to control one filter channel to be connected and the other filter channel to be blocked; The cleaning mechanism is used for cleaning the blocked filtering mechanism.

[0008] By adopting the above technical scheme, the exhaust gas enters the conveying pipe 1, the exhaust gas passes through the dehydration component to remove moisture in the exhaust gas, and the exhaust gas is filtered through the filter channel to remove moisture and impurities. At the same time, when there are too many impurities on the filter mechanism and cause blockage, the filter mechanism blocks the filter channel located at the blocked filter mechanism, and the exhaust gas continues to be filtered through another filter channel. At the same time, the cleaning mechanism filters the impurities on the filter mechanism. After cleaning, the filter mechanism opens the filter channel of the cleaned filter mechanism, and blocks and cleans the other filter channel, thereby realizing alternating cleaning of the filter mechanism and filtering of the exhaust gas, thereby further improving the removal effect of moisture and impurities in the impurities, and improving the treatment effect and efficiency of the exhaust gas.

[0009] Optionally, the mounting member is provided with an air inlet and an air outlet respectively connected to the delivery pipe 1 and the delivery pipe 2, and the filtering mechanism comprises: A rotating shaft, rotatably mounted on a mounting member; A blocking plate is arranged on a side wall of the rotating shaft close to the air inlet and extends into the air inlet; A conversion plate is rotatably mounted on the mounting member and is located on a side of the rotating shaft close to the air outlet and abuts against the rotating shaft. The conversion plate extends into the air outlet and abuts against one end of the air outlet for positioning under the push of the exhaust gas. The filter channel is used to connect the air inlet and the air outlet and is formed by the mounting member, the conversion plate, the blocking plate and the rotating shaft. Two filter element groups are arranged on the rotating shaft and are respectively located in two filter channels and are used to filter the exhaust gas multiple times step by step. After the blocking plate rotates, it abuts against one end of the air inlet hole and connects one of the filter channels and blocks the other filter channel. An elastic recovery component is arranged on the mounting member and connected to the rotating shaft and has elasticity. After the filter element group is blocked, the exhaust gas drives the rotating shaft and the blocking plate to rotate. During the rotation of the blocking plate, the elastic recovery component is pulled to extend and then contract. Under the action of the pulling force, the blocking plate is pressed against one end of the air inlet hole, so as to block one of the filter channels and connect the other filter channel. Two blocking components are respectively slidably arranged at both ends of the air inlet hole and alternately adsorbed on the opposite side walls of the blocking plate for positioning and used to block the gap between the blocking plate and the air inlet hole. The elastic recovery component drives the blocking plate away from the blocking component, so that the blocking component is separated from the blocking plate.

[0010] By adopting the above technical solution, the waste gas located in the conveying pipe enters the installation part through the air inlet hole, and then the waste gas is filtered through the filter element group. The waste gas pushes the conversion plate to abut against the air outlet hole for positioning. The waste gas then enters the second conveying pipe through the air outlet hole for conveying. When there are too many impurities on the filter element group causing blockage, the waste gas cannot pass through and generates a thrust on the filter element group. The thrust drives the filter element group to rotate. The rotation of the filter element group drives the rotation of the rotating shaft and the elastic recovery component. After the elastic recovery component is stretched and then contracted, the rotation of the rotating shaft drives the rotation of the blocking plate. That is, the blocking plate first receives the pulling force of the elastic recovery component to move back to the end in contact with the original air inlet hole. When the rotation of the blocking plate causes the elastic recovery component to stretch to the maximum value, the blocking plate continues to rotate and can quickly approach and abut against the other end of the air inlet hole under the action of the pulling force of the elastic recovery component for positioning, so that the blocking plate first presses against one end of the air inlet hole and then presses against the other end of the air inlet hole under the action of the pulling force of the elastic recovery component, so as to block the filter channel where the blocked filter element group is located, and the cleaning mechanism cleans the blocked filter element group.

[0011] During cleaning, the waste gas enters the installation part, and the waste gas continues to be filtered through the filter element group. The waste gas then pushes the conversion plate to rotate and abut against the other end of the air outlet hole, so that the filtered waste gas all enters the second conveying pipe for conveying, blocking the waste gas from entering the installation part again, and further improving the treatment effect and efficiency of the waste gas.

[0012] The blocking component is adsorbed on the blocking plate. When the blocking plate rotates, it drives the movement of the blocking component. The blocking component can block the gap between the blocking plate and the air inlet hole, so that the incoming waste gas can be used to drive the rotation of the filter element group. Then the blocking plate is separated from the blocking component under the action of the pulling force of the elastic recovery component, and the blocking plate rotates and abuts against the other end of the air inlet hole. And the blocking component here continues to be adsorbed on the blocking plate. When another filter element group is blocked, the operating principle is the same, so that the filter element group can be automatically blocked and cleaned, improving the treatment effect and efficiency of the waste gas.

[0013] Optionally, the filter element group includes a plurality of filter plates arranged in a circumferential array around the axis of the rotating shaft, and filter holes with gradually decreasing apertures along the moving direction of the waste gas are formed on the plurality of filter plates.

[0014] By adopting the above technical solution, the waste gas passes through multiple filter plates in sequence for filtration and cleaning, so as to filter the impurities in the waste gas, improve the filtration effect of the waste gas, reduce the risk of blockage of the adsorption mechanism, and improve the treatment effect and efficiency of the waste gas.

[0015] Optionally, the elastic recovery component includes: A fixed column, arranged on the mounting part; A rotating plate, arranged on the rotating shaft; A pull rod, arranged on the rotating plate and making the rotating shaft located between the pull rod and the fixed column; A tension spring, arranged on the pull rod and connected to the pull rod. During the rotation of the baffle plate, the tension spring is stretched and then retracted, and under the action of the tension of the tension spring, it presses against one end of the air inlet hole for positioning.

[0016] By adopting the above technical solution, the rotation of the rotating shaft drives the rotating plate and the pull rod to rotate around the axis of the rotating shaft. The pull rod rotates away from the fixed column first and then approaches the fixed column, so that the tension spring is first stretched and then contracted, so as to realize that the baffle plate abuts against both ends of the air inlet hole for positioning.

[0017] Optionally, the blocking component includes: A moving plate, slidably arranged on the air inlet hole; A spring, arranged on the mounting part and connected to the moving plate; An adsorbing part, arranged on the moving plate and adsorbed on the baffle plate for positioning; the rotation of the baffle plate drives the moving plate to move and stretch the spring, and the elastic recovery component pulls the baffle plate away from the adsorbing part and makes the adsorbing part disengage from the baffle plate.

[0018] By adopting the above technical solution, the adsorbing part is adsorbed on the baffle plate. The rotation of the baffle plate drives the adsorbing part and the moving plate to rotate. The rotation of the moving plate stretches the spring. Then the baffle plate moves away from the adsorbing part under the action of the tension spring, so that the adsorbing part disengages from the baffle plate, and the moving plate moves back to its original position under the action of the spring, so as to realize the sealing of the gap between the baffle plate and the air inlet hole.

[0019] Optionally, a cleaning hole for impurities to pass through is formed on the mounting part, and the cleaning mechanism includes: A driving part, arranged on the mounting part; A cleaning brush, arranged on the piston rod of the driving part. The driving part drives the cleaning brush to move for cleaning impurities and makes the cleaning brush located above the filtering mechanism before moving; A blocking and sealing component, used for blocking the cleaning hole and opening the cleaning hole during cleaning to allow impurities to pass through; A collecting component, used for collecting impurities.

[0020] By adopting the above technical solution, when the filtering channel filters, the blocking component blocks the cleaning hole. When cleaning is required, the blocking component opens the cleaning hole, and the driving member starts to drive the cleaning brush to move downward to clean the filter element group. The impurities after cleaning are moved into the collecting component through the cleaning hole for collection. Then, the driving member drives the cleaning brush to move upward, and then the blocking component continues to block the cleaning hole, so as to realize the cleaning of the filter element group.

[0021] Optionally, the blocking component includes: A blocking plate, rotatably installed on the mounting member; A torsion spring, arranged on the mounting member and connected to the blocking plate to push the blocking plate against the mounting member to block the cleaning hole; A push block, arranged on the blocking plate. When the blocking plate rotates to block the filtering channel and the blocked filter element group rotates, the push block is pushed and the blocking plate opens the cleaning hole.

[0022] By adopting the above technical solution, the filter element group to be cleaned rotates close to the push block. The filter element group pushes the push block and the blocking plate to rotate and open the cleaning hole, so that the cleaning hole can be opened in advance, and the cleaning brush moves downward to clean the impurities, enabling the impurities to be quickly moved into the collecting component through the cleaning hole for collection. After the cleaning brush moves upward, the impurities can still be collected through the cleaning hole. When filtering waste gas is required, the filter element group rotates away from the push block, and the blocking plate moves back under the action of the torsion spring and abuts against the mounting member to block the cleaning hole, thereby improving the cleaning effect on the impurities.

[0023] Optionally, the collecting component includes: A collecting block, arranged on the mounting member; A collecting box, slidably installed on the collecting block and used for collecting impurities By adopting the above technical solution, the impurities are moved into the collecting box for collection, and at the same time, the collecting box can be removed for cleaning.

[0024] Optionally, the water removing component includes: A mounting plate, arranged on the top of the first conveying pipe; A mounting frame, arranged on the lower surface of the mounting plate; A water absorbing member, snap-fitted on the mounting frame and used for absorbing water in the impurities.

[0025] By adopting the above technical solution, the moisture moves upward and is absorbed by the water absorbing member. At the same time, the mounting plate can be removed to replace the water absorbing member. After replacement, the mounting plate is fixedly installed on the top of the first conveying pipe, so as to realize the removal of moisture in the waste gas.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The waste gas first passes through a lye spraying mechanism for spraying, and the moisture and impurities in the waste gas are removed by a dry filter. Then, the waste gas passes through an adsorption mechanism for adsorption treatment, thereby reducing the risk of blockage of the adsorption mechanism caused by the mixture of moisture and impurities. The waste gas is transferred to a combustion mechanism for combustion treatment and then discharged, improving the treatment effect and efficiency of the waste gas.

[0027] 2. The moisture and impurities are removed by a water removal component and a filtering mechanism. At the same time, one filtering channel is used to filter the waste gas and the other filtering channel is used to clean the impurities, realizing the mutual alternation of cleaning the filtering mechanism and filtering the waste gas. Therefore, the removal effect of moisture and impurities in the impurities is further improved, and the treatment effect and efficiency of the waste gas are improved. Brief Description of the Drawings

[0028] Figure 1 is a schematic structural diagram of the waste gas treatment system; Figure 2 is a schematic structural diagram of the dry filter in the waste gas treatment system; Figure 3 is a schematic structural diagram of the water removal component in the waste gas treatment system; Figure 4 is a partial structural schematic diagram of the dry filter in the waste gas treatment system, in which the side walls of the mounting member, the first conveying pipe and the second conveying pipe are sectioned; Figure 5 is a schematic structural diagram of the cleaning mechanism in the waste gas treatment system.

[0029] Reference Signs: 11, lye spraying mechanism; 12, adsorption mechanism; 13, combustion mechanism; 14, exhaust mechanism; 2, dry filter; 21, first conveying pipe; 22, second conveying pipe; 23, mounting member; 24, filtering channel; 25, cleaning hole; 26, air inlet hole; 27, air outlet hole; 3, water removal component; 31, mounting plate; 32, mounting frame; 33, water absorbing member; 4, filtering mechanism; 41, rotating shaft; 42, blocking plate; 43, conversion plate; 44, filter element group; 45, filter plate; 5, elastic recovery component; 51, fixed column; 52, rotating plate; 53, pull rod; 54, tension spring; 6, blocking component; 61, moving plate; 62, spring; 7, cleaning mechanism; 71, cleaning brush; 72, driving member; 73, blocking component; 74, blocking plate; 75, push block; 76, arc surface; 8, collection component; 81, collection block; 82, collection box. Detailed Description of the Embodiments

[0030] The following further details the present application.

[0031] The embodiment of the present application discloses a lithium battery injection and liquefaction organic waste gas treatment system.

[0032] Refer toFigure 1 , a lithium battery injection liquefaction organic waste gas treatment system, including a lye spray mechanism 11, a dry filter 2, an adsorption mechanism 12, a combustion mechanism 13, and an exhaust mechanism 14 connected in sequence. The lye spray mechanism 11 is used to spray lye on the waste gas. The dry filter 2 is used to remove moisture and filter impurities multiple times. The adsorption mechanism 12 and the combustion mechanism 13 are used to adsorb and burn the waste gas. The exhaust mechanism 14 is used to discharge the tail gas and make the waste gas flow.

[0033] The lye spray mechanism 11 adopts a vertical countercurrent spray tower. There are three spray layers and one demisting layer filled in the tower. The spray layer adopts φ50PP polyhedral ball packing, and the demisting layer adopts one 260mm high S-shaped corrugated demister plus one layer of φ50PP polyhedral ball packing with a height ratio lower than 400mm to ensure that the demisting layer can effectively intercept and remove the water mist in the wastewater (the fog droplet content shall not be higher than 50mg / m³); the adsorption mechanism 12 adopts an activated carbon adsorption structure, and the combustion mechanism 13 adopts a combustion chamber structure; the exhaust mechanism 14 uses a centrifugal fan and an exhaust tower. The above structures are all existing technologies and will not be elaborated here.

[0034] Refer to Figure 1 - Figure 2 , the dry filter 2 includes a conveying pipe 21, a conveying pipe 22, a mounting part 23, a water removal component 3, a filtering mechanism 4, and a cleaning mechanism 7. The conveying pipe 21 and the conveying pipe 22 are respectively connected to the lye spray mechanism 11 and the adsorption mechanism 12. The center lines of the conveying pipe 21 and the conveying pipe 22 coincide and are in a horizontal state; the mounting part 23 is fixedly installed on the opposite ends of the conveying pipe 21 and the conveying pipe 22 and is in a vertical state. The mounting part 23 is cylindrical and the center of the circle is located on the extension line of the center lines of the conveying pipe 21 and the conveying pipe 22.

[0035] Refer to Figure 2 - Figure 3 , the water removal component 3 is arranged on the conveying pipe 21 and is used to remove the moisture in the waste gas. The water removal component 3 includes a mounting plate 31, a mounting frame 32, and a water absorption part 33. An installation hole communicating with the inside of the conveying pipe 21 is opened at the top of the conveying pipe 21. The mounting plate 31 is detachably installed on the installation hole by screws; the mounting frame 32 is fixedly installed on the lower surface of the mounting plate 31. The water absorption part 33 is snap-fitted in the mounting frame 32 and is used to absorb the moisture in the waste gas. The water absorption part 33 can adopt structures such as molecular sieves to absorb water. After the waste gas is sprayed with lye and enters the conveying pipe 21, the moisture temperature rises and the moisture moves upward, and the dust and other impurities in the waste gas move downward under the action of gravity. The moisture is absorbed by the water absorption part 33, while the gas and impurities continue to move forward; at the same time, the water absorption part 33 can be replaced after removing the mounting plate 31 from the conveying pipe 21, thereby improving the water absorption effect.

[0036] Refer to Figure 2 , Figure 4, the filtering mechanism 4 is arranged on the mounting member 23 and cooperates with the mounting member 23 to form two independent filtering channels 24 that communicate with the first conveying pipe 21 and the second conveying pipe 22 respectively. The two filtering channels 24 are symmetrically arranged with respect to the center line of the first conveying pipe 21 and the axis of the rotating shaft 41 respectively.

[0037] The filtering mechanism 4 includes a rotating shaft 41, a blocking plate 42, a conversion plate 43 and two groups of filtering elements 44. The rotating shaft 41 coaxially passes through the upper and lower surfaces of the mounting member 23 and is rotatably mounted on the mounting member 23. The mounting member 23 is provided with an air inlet hole 26 and an air outlet hole 27 that communicate with the first conveying pipe 21 and the second conveying pipe 22 respectively. The air inlet hole 26 and the air outlet hole 27 are both arc-shaped, and the centers of the circles are located on the axis of the rotating shaft 41 and they have the same size. The two ends of the air inlet hole 26 are symmetrically arranged with respect to the center line of the first conveying pipe 21 and the axis of the rotating shaft 41. The upper and lower surfaces of the air inlet hole 26 are flush with the top wall and the bottom wall of the mounting member 23.

[0038] The blocking plate 42 is fixedly mounted on the side wall of the rotating shaft 41 close to the air inlet hole 26 and is arranged radially along the mounting member 23; the conversion plate 43 is rotatably mounted on the mounting member 23, and the conversion plate 43 is located on the side of the rotating shaft 41 close to the air outlet hole 27 and abuts against the rotating shaft 41. At the same time, the conversion plate 43 extends radially into the air outlet hole 27. The upper and lower surfaces of both the blocking plate 42 and the conversion plate 43 are in contact with the inner top wall and the inner bottom wall of the mounting member 23. The inner side wall of the mounting member 23, the blocking plate 42, the conversion plate 43 and the rotating shaft 41 cooperate to form two filtering channels 24, and the two groups of filtering elements 44 are respectively located in the two filtering channels 24.

[0039] After the blocking plate 42 rotates and abuts against one end of the air inlet hole 26 for positioning, the waste gas enters the mounting member 23. The gas is filtered by the filtering element group 44 and then moves to the conversion plate 43. The waste gas pushes the conversion plate 43 to rotate and abut against the air outlet hole 27, so that the waste gas enters the second conveying pipe 22 and blocks the waste gas from entering the mounting member 23 on the other side of the conversion plate 43; if the blocking plate 42 rotates and abuts against the other end of the air inlet hole 26 for positioning, the waste gas continues to enter the mounting member 23 on the other side of the blocking plate 42. Then the waste gas continues to be filtered by the filtering element group 44, and the waste gas pushes the conversion plate 43 to abut against the other end of the air outlet hole 27, so as to realize that one of the filtering channels 24 is communicated and the other filtering channel 24 is blocked.

[0040] The filter element group 44 includes a plurality of filter plates 45 arranged in a circumferential array around the axis of the rotating shaft 41. Filter holes with apertures gradually decreasing in the exhaust gas moving direction are formed on the plurality of filter plates 45, so as to achieve step-by-step filtration of the exhaust gas, improve the filtration effect of the exhaust gas. The upper and lower surfaces of the filter plate 45 are flush with the inner top wall and the inner bottom wall of the mounting member 23, and an arc surface is formed at one end of the filter plate 45 away from the rotating shaft 41, and the arc surface abuts against the inner side wall of the mounting member 23, so that the exhaust gas is filtered through the filter plate 45; when impurities on the plurality of filter plates 45 are blocked, the exhaust gas can push the filter plate 45 to rotate, and the rotation of the filter plate 45 drives the rotation of the rotating shaft 41 and the blocking plate 42.

[0041] Referring to Figure 2 、 Figure 4 , the filtering mechanism 4 further includes an elastic recovery component 5 and two blocking components 6 and a cleaning mechanism 7. The elastic recovery component 5 is arranged on the mounting member 23 and is connected to the rotating shaft 41 and has elasticity. The cleaning mechanism 7 is used to clean the plurality of filter plates 45 located in the blocked filter channel 24. After the filter plates 45 are blocked, the exhaust gas drives the rotation of the rotating shaft 41 and the blocking plate 42. During the rotation of the blocking plate 42, the elastic recovery component 5 is pulled to elongate and then contract, and the blocking plate 42 abuts against one end of the air inlet hole 26 under the action of the pulling force for positioning, so that one of the filter channels 24 is blocked and the other filter channel 24 is communicated, and then the cleaning mechanism 7 is started to clean the plurality of blocked filter plates 45.

[0042] The two blocking components 6 are respectively slidably arranged at both ends of the air inlet hole 26 and alternately adsorb on the opposite side walls of the blocking plate 42 for positioning. At the same time, the two blocking components 6 can be separated from the blocking plate 42 under the pulling force of the elastic recovery component 5, so as to block the gap between the blocking plate 42 and the air inlet hole 26.

[0043] Referring to Figure 2 、 Figure 4 , the elastic recovery component 5 includes a fixed column 51, a rotating plate 52, a pull rod 53 and a tension spring 54. The fixed column 51 is fixedly installed on the upper surface of the mounting member 23. The rotating plate 52 is fixedly installed on the rotating shaft 41 and is located above the mounting member 23. The rotating plate 52 extends radially along the mounting member 23 to the side of the rotating shaft 41 away from the fixed column 51; the pull rod 53 is fixedly installed at one end of the rotating plate 52 away from the rotating shaft 41, and the axes of the pull rod 53, the fixed column 51 and the rotating shaft 41 are parallel to each other; the two ends of the tension spring 54 are hooked and fixedly installed on the fixed column 51 and the pull rod 53, and fixing grooves for limiting the two ends of the tension spring 54 and in a ring shape are formed on the fixed column 51 and the pull rod 53.

[0044] In the initial state, the baffle 42 is positioned against one end of the air inlet hole 26 under the pulling force of the tension spring 54. After the filter plate 45 is blocked, the rotating shaft 41 is driven to rotate. The rotation of the rotating shaft 41 drives the baffle 42 and the rotating plate 52 to rotate. The rotation of the rotating plate 52 drives the pull rod 53 to rotate around the axis of the rotating shaft 41. The rotation of the pull rod 53 pulls the tension spring 54 to elongate. When the centers of the fixed column 51, the rotating shaft 41, and the pull rod 53 are located on the same straight line, the tension spring 54 is elongated to the maximum. Then the rotating shaft 41 continues to rotate, and the tension spring 54 contracts to pull the baffle 42 to quickly approach and abut against the other end of the air inlet hole 26 for positioning. At the same time, when the baffle 42 abuts against both ends of the air inlet hole 26, its position is symmetrically arranged with respect to the connection line of the centers of the fixed column 51 and the rotating shaft 41 in a mirror image manner.

[0045] The blocking assembly 6 includes a moving plate 61, a spring 62, and an adsorbing member. Moving holes are formed at both ends of the air inlet hole 26 along the axis of the rotating shaft 41. The moving plate 61 is slidably installed in the moving holes. A fixing hole communicating with the moving holes is formed on the outer side wall of the mounting member 23. The spring 62 is fixedly installed at the bottom of the moving hole and connected to the moving plate 61. The fixing hole facilitates the fixing and installation of the spring 62.

[0046] The adsorbing member is fixedly installed on the side wall of the moving plate 61 close to the baffle 42. When the baffle 42 abuts against one end of the air inlet hole 26, the adsorbing member adsorbs on the baffle 42, so that the rotation of the baffle 42 drives the moving plate 61 to move. When the baffle 42 is pulled away from the adsorbing member and the moving plate 61 by the pulling force of the tension spring 54, the adsorbing member disengages from the baffle 42 under the action of the pulling force, and then the moving plate 61 moves back under the pulling force of the spring 62. The adsorbing member can be a magnet and an iron sheet arranged on the moving plate 61 and the baffle 42, or the adsorbing member is a suction cup arranged on the moving plate 61, etc.

[0047] Refer to Figure 2 、 Figure 4 Multiple cleaning holes 25 for impurities to pass through are formed at intervals on the inner bottom wall of the mounting member 23. When the baffle 42 abuts against one end of the air inlet hole 26 to block the filtering channel 24, the multiple cleaning holes 25 are arranged in one-to-one correspondence with the multiple filter plates 45 located in the blocked filtering channel 24.

[0048] Refer to Figure 2 、 Figure 4 and Figure 5, the cleaning mechanism 7 includes a cleaning brush 71, a driving member 72, a plugging assembly 73, and a collecting assembly 8. A receiving groove is formed in the inner top wall of the mounting member 23; the driving member 72 is an electric push rod or a cylinder, and the driving member 72 is fixedly installed on the upper surface of the mounting member 23 and the piston rod vertically penetrates through the mounting member 23 and extends into the receiving groove; the cleaning brush 71 is fixedly installed on the piston rod of the driving member 72, and the cleaning brush 71 is initially located in the receiving groove and above the filter plate 45. When the driving member 72 is activated, it drives the cleaning brush 71 to move vertically downward, and the cleaning brush 71 moves downward to clean the impurities on the filter plate 45.

[0049] A filtering mechanism 4 is provided at each filter plate 45. The plugging assembly 73 is used to plug the cleaning hole 25 and to open the cleaning hole 25 to allow impurities to pass through, and the collecting assembly 8 is used to collect the impurities. The plugging assembly 73 includes a plugging plate 74, a torsion spring, and a pushing block 75. The plugging plate 74 is rotatably installed on the lower surface of the mounting member 23, the torsion spring is fixedly installed on the mounting member 23 and connected to the plugging plate 74, and the torsion spring pushes the plugging plate 74 to abut against the lower surface of the mounting member 23 to plug the cleaning hole 25.

[0050] The pushing block 75 is fixedly installed on the upper surface of the plugging plate 74. The pushing block 75 vertically penetrates through the cleaning hole 25 and extends into the mounting member 23. During the rotation of the filter plate 45, the bottom of the filter plate 45 in the plugged filter channel 24 pushes the pushing block 75 downward, causing the pushing block 75 and the plugging plate 74 to rotate and open the cleaning hole 25, thereby opening the cleaning hole 25 in advance. At the same time, an arc-shaped surface 76 that is convenient for the filter plate 45 to push is provided on the pushing block 75; the cleaning brush 71 moves downward to clean the filter plate 45, and the cleaned impurities are transferred into the collecting assembly 8 through the cleaning hole 25 for collection.

[0051] After the cleaning is completed, when the cleaning brush 71 moves upward and returns, the impurities can still continue to be discharged into the collecting assembly 8 through the cleaning hole 25; the filter plate 45 rotates away from the pushing block 75, and the plugging plate 74 rotates under the action of the torsion spring and abuts against the lower surface of the mounting member 23 to plug the cleaning hole 25, thereby realizing the automatic opening or closing of the cleaning hole 25 for cleaning and improving the cleaning effect of the filter plate 45.

[0052] The collecting assembly 8 includes a collecting block 81 and a collecting box 82. The collecting block 81 is fixedly installed on the lower surface of the mounting member 23, and a plurality of collecting blocks 81 are arranged at intervals; the collecting box 82 is snap-fitted and slidably installed on the plurality of collecting blocks 81. The collecting box 82 is used to collect the impurities that have passed through the cleaning, thereby realizing the installation of the collecting box 82 and being able to remove the collecting box 82 for cleaning.

[0053] The working principle of the embodiment of the present application is as follows: The start of the exhaust mechanism 14 allows the waste gas to enter the lye spraying mechanism 11. The lye spraying mechanism 11 sprays the waste gas to remove the electrolyte lithium salt in the waste gas and cool the waste gas at the same time. The waste gas enters the dry filter 2 for water and impurity removal, and then the waste gas passes through the adsorption mechanism 12 and the combustion mechanism 13 in sequence for adsorption and combustion. Finally, the exhaust gas tail is discharged through the exhaust mechanism 14, thereby improving the treatment effect and efficiency of the waste gas.

[0054] After passing through the lye spraying mechanism 11, the waste gas enters the first conveying pipe 21. The water absorption member 33 is used to absorb and remove moisture. The waste gas enters the mounting member 23 through the air inlet hole 26. After the waste gas passes through a plurality of filter plates 45 for filtration, the waste gas pushes the conversion plate 43 to rotate and then abuts against the air outlet hole 27. Finally, the waste gas enters the adsorption mechanism 12 through the air outlet hole 27 and the second conveying pipe 22 for adsorption treatment.

[0055] When the filter plate 45 is blocked, the waste gas pushes the filter plate 45 to rotate. The rotation of the filter plate 45 drives the rotation of the rotating shaft 41 and the blocking plate 42, so that the blocking plate 42 abuts against the other end of the air inlet hole 26. The waste gas continues to enter the mounting member 23 and is filtered through a plurality of filter plates 45. The waste gas pushes the conversion plate 43 to rotate and abut against the other end of the air outlet hole 27, so as to block the filtration channel 24 of the blocked filter plate 45 and connect the other filtration channel 24. The waste gas continues to be filtered through the connected filtration channel 24. At the same time, the cleaning mechanism 7 cleans the blocked filter plate 45, so that the filter plate 45 can be automatically cleaned, improving the filtration effect and efficiency of the filter plate 45 on the waste gas, and further improving the treatment effect and efficiency of the waste gas.

[0056] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A lithium battery liquefaction organic waste gas treatment system, characterized by: The invention comprises an alkali liquid spraying mechanism (11), a dry filter (2), an adsorption mechanism (12), a combustion mechanism (13), and an exhaust mechanism (14) which are connected in sequence, wherein the alkali liquid spraying mechanism (11) is used to spray alkali liquid on the waste gas, the dry filter (2) is used to remove moisture and filter impurities multiple times, the adsorption mechanism (12) and the combustion mechanism (13) are used to adsorb and burn the waste gas respectively, and the exhaust mechanism (14) is used to discharge the tail gas and allow the waste gas to flow.

2. A lithium battery liquid injection organic waste gas treatment system according to claim 1, characterized in that: The dry filter (2) comprises: The conveying pipe 1 (21) and the conveying pipe 2 (22) are respectively connected to the alkali solution spraying mechanism (11) and the adsorption mechanism (12); A mounting member (23) is arranged on opposite ends of the first delivery pipe (21) and the second delivery pipe (22); A water removal component (3) is arranged on the first delivery pipe (21) and is used to remove moisture from the exhaust gas; A filter mechanism (4) is disposed on the mounting member (23) and cooperates with the mounting member (23) to form two filter channels (24) that are independent of each other and connected to the first delivery pipe (21) and the second delivery pipe (22), wherein the filter mechanism (4) is used to control one filter channel (24) to be connected and the other filter channel (24) to be blocked; The cleaning mechanism (7) is used to clean the blocked filtering mechanism (4).

3. A lithium battery liquid injection organic waste gas treatment system according to claim 2, characterized in that: The mounting member (23) is provided with an air inlet (26) and an air outlet (27) respectively connected to the first delivery pipe (21) and the second delivery pipe (22). The filtering mechanism (4) comprises: A rotating shaft (41) rotatably mounted on the mounting member (23); A blocking plate (42) is arranged on a side wall of the rotating shaft (41) close to the air inlet hole (26) and extends into the air inlet hole (26); a conversion plate (43) rotatably mounted on the mounting member (23) and located on a side of the rotating shaft (41) close to the air outlet (27) and abutting against the rotating shaft (41); the conversion plate (43) extends into the air outlet (27) and abuts against one end of the air outlet (27) for positioning under the push of the exhaust gas; the filter channel (24) is used to connect the air inlet (26) and the air outlet (27) and is formed by the mounting member (23), the conversion plate (43), the blocking plate (42) and the rotating shaft (41); Two filter element groups (44) are arranged on the rotating shaft (41) and are respectively located in the two filter channels (24) and are used to implement multiple stage-by-stage filtering of the exhaust gas; the blocking plate (42) abuts against one end of the air inlet (26) after rotation and connects one of the filter channels (24) and blocks the other filter channel (24); An elastic recovery component (5) is arranged on the mounting member (23) and connected to the rotating shaft (41) and has elasticity. When the filter element group (44) is blocked, the exhaust gas drives the rotating shaft (41) and the blocking plate (42) to rotate. During the rotation of the blocking plate (42), the elastic recovery component (5) is pulled to extend and then contract. Under the action of the pulling force, the blocking plate (42) is pressed against one end of the air inlet hole (26), so that one of the filter channels (24) is blocked while the other filter channel (24) is connected. The two blocking components (6) are respectively slidably disposed on the two ends of the air inlet (26) and are alternately adsorbed on the opposite side walls of the blocking plate (42) for positioning and for blocking the gap between the blocking plate (42) and the air inlet (26); the elastic recovery component (5) drives the blocking plate (42) away from the blocking component (6) so that the blocking component (6) and the blocking plate (42) are separated.

4. A lithium battery liquid injection and organic waste gas treatment system according to claim 3, characterized in that: The filter element group (44) comprises a plurality of filter plates (45) arranged in a circular array around the axis of the rotating shaft (41), and the plurality of filter plates (45) are provided with filter holes whose apertures gradually decrease along the moving direction of the exhaust gas.

5. A lithium battery liquid injection and organic waste gas treatment system according to claim 3, characterized in that: The elastic recovery component (5) comprises: A fixing column (51) is arranged on the mounting member (23); A rotating plate (52) is arranged on the rotating shaft (41); A pull rod (53) is arranged on the rotating plate (52) so that the rotating shaft (41) is located between the pull rod (53) and the fixed column (51); The tension spring (54) is arranged on the pull rod (53) and connected to the pull rod (53). During the rotation of the blocking plate (42), the tension spring (54) is extended and then retracted, and is pressed against one end of the air inlet (26) for positioning under the tension of the tension spring (54).

6. A lithium battery liquid injection and organic waste gas treatment system according to claim 3, characterized in that: The blocking component (6) comprises: A movable plate (61) slidably disposed on the air inlet hole (26); A spring (62) is disposed on the mounting member (23) and connected to the moving plate (61); The adsorption member is arranged on the movable plate (61) and adsorbed on the blocking plate (42) for positioning; the blocking plate (42) rotates to drive the movable plate (61) to move and stretch the spring (62), and the elastic recovery component (5) pulls the blocking plate (42) away from the adsorption member and causes the adsorption member to be separated from the blocking plate (42).

7. A lithium battery liquid injection and organic waste gas treatment system according to claim 3, characterized in that: The mounting member (23) is provided with a cleaning hole (25) for passing impurities, and the cleaning mechanism (7) comprises: A driving member (72) is disposed on the mounting member (23); A cleaning brush (71) is arranged on a piston rod of a driving member (72), wherein the driving member (72) drives the cleaning brush (71) to move to clean impurities and the cleaning brush (71) is located above the filter mechanism (4) before moving; A plugging assembly (73) for plugging the cleaning hole (25) and for opening the cleaning hole (25) during cleaning to allow impurities to pass through; The collecting component (8) is used to collect impurities.

8. A lithium battery liquid injection and organic waste gas treatment system according to claim 7, characterized in that: The blocking component (73) comprises: A blocking plate (74) is rotatably mounted on the mounting member (23); a torsion spring, disposed on the mounting member (23) and connected to the blocking plate (74) and pushing the blocking plate (74) to press against the mounting member (23) to block the cleaning hole (25); The push block (75) is arranged on the blocking plate (74), and when the blocking plate (42) rotates to block the filter channel (24), the blocked filter element group (44) rotates to push the push block (75) and cause the blocking plate (74) to open the cleaning hole (25).

9. A lithium battery liquid injection and organic waste gas treatment system according to claim 7, characterized in that: The collecting component (8) comprises: A collecting block (81) is arranged on the mounting member (23); The collecting box (82) is slidably mounted on the collecting block (81) and is used to collect impurities.

10. A lithium battery liquid injection and organic waste gas treatment system according to claim 2, characterized in that: The water removal component (3) comprises: A mounting plate (31) disposed on the top of the first delivery pipe (21); A mounting frame (32) disposed on the lower surface of the mounting plate (31); The water absorbing member (33) is mounted on the mounting frame (32) by snap-fitting and is used to absorb water in the impurities.

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