Waste lithium battery electrolyte waste gas treatment device and method

Abstract

The invention discloses a waste lithium battery electrolyte waste gas treatment device and method, and relates to the field of waste lithium battery electrolyte waste gas treatment. The waste lithium battery electrolyte waste gas treatment device comprises a box frame, a filter box is fixedly connected to the box frame, a dust falling hopper is arranged on the filter box, a gas inlet pipe is fixedly connected to the dust falling hopper, a gas purification box is fixedly connected to the filter box, a gas outlet pipe is fixedly connected to the gas purification box, and dust removal cloth bags which are evenly distributed are fixedly connected to the bottom wall of the gas purification box. The upper end of the dust collecting bag is fixed and suspended in the inner cavity of the filter box. The problem that dust at the bottom of the bag is difficult to clean is solved through the dust cleaning mechanism, and the efficiency and service life of the dust collecting bag are improved; during dust removal, the plugging frame opens the bag bottom, accumulated dust is removed in cooperation with high-pressure injection, and sticky dust is prevented from forming a'dead zone '; the cloth bag is loosened to enhance the vibration effect and improve the dust stripping rate; the process is automatic, resistance is reduced, the operation period is prolonged, and complex waste gas purification is facilitated.

Description

Technical Field

[0001] The present invention relates to the field of waste lithium battery electrolyte waste gas treatment, and in particular to a waste lithium battery electrolyte waste gas treatment device and method. Background Art

[0002] During the recycling of used lithium batteries, electrolyte waste gas generated during the drying, cracking, and crushing processes has complex characteristics, such as high temperature (approximately 200°C), fine dust, and sticky tar. Its efficient purification is a key challenge for the industry. The current mainstream process uses a cascade purification system: waste gas from multiple sources is combined and passed through a cyclone separator, where it is mixed with injected calcium oxide for conditioning. Centrifugal force is used to initially remove coarse particles and condensed tar. The pretreated gas then enters a bag filter for fine dust removal.

[0003] However, existing bag filters have significant bottlenecks. Its bottom air intake design uses a blower to drive dust-laden gas into the bottom of the dust collector, utilizing the internal positive pressure environment to improve the efficiency of large-flow exhaust gas treatment, and has low structural sealing requirements. However, during the dust cleaning process, due to the limited space at the bottom of the bag and its tight fixation, sticky dust and fine particles tend to accumulate and form a "dead zone." Although the elastic shaking of the bag (such as airflow impact vibration or mechanical vibration) can assist in removing dust, the existing suspension structure cannot provide sufficient deformation space for the bottom of the bag, resulting in continued dust accumulation. Long-term accumulation of dust hardens and causes local blockage of the filter bag, increased system resistance, decreased filtration efficiency, and shortened service life, seriously restricting the stability and energy efficiency of the exhaust gas treatment system. Summary of the Invention

[0004] In order to overcome the shortcomings of existing bag dust collectors in treating waste lithium battery electrolyte waste gas, such as difficulty in cleaning the bottom of the bag, easy accumulation of sticky dust to form a "dead zone" and dust accumulation in the bag, which leads to increased system resistance, decreased filtration efficiency and shortened equipment life, the purpose of the present invention is to provide a waste lithium battery electrolyte waste gas treatment device and method.

[0005] The waste gas treatment device for the electrolyte of used lithium batteries includes a box frame, a filter box is fixedly connected to the box frame, an ash hopper is provided on the filter box, an air inlet pipe is fixedly connected to the ash hopper, a clean air box is fixedly connected to the filter box, an air outlet pipe is fixedly connected to the clean air box, and evenly distributed dust removal bags are fixedly connected to the bottom wall of the clean air box. The upper ends of the dust removal bags are fixed and suspended in the inner cavity of the filter box. The inner wall of the filter box is fixedly connected to symmetrically distributed first guide rails, and a connecting frame is fixedly connected between the bottoms of the evenly distributed dust removal bags. The connecting frame slides vertically between the symmetrically distributed first guide rails. The bottom of each dust removal bag is set to an open shape, and a sealing component for controlling the opening and closing state of the bottom port of the dust removal bag is provided on the connecting frame.

[0006] In one embodiment, the sealing assembly includes telescopic rods symmetrically fixed to the connecting frame, and a sealing frame is fixed between the telescopic parts of each telescopic rod. The sealing frame is provided with a conical bracket matching the caliber near the bottom port of each dust bag, and a filter cloth is provided on the outer surface of each conical bracket.

[0007] In one embodiment, the inner wall of the filter box is fixedly connected with symmetrically distributed second guide rails, and the outer wall of the filter box is installed with symmetrically distributed motors. The output shaft of each motor is provided with a coupling, and each coupling is fixed with a screw. Each screw is rotatably connected to the adjacent second guide rail, and each screw is threadedly connected to a sliding frame. Each sliding frame slides in the adjacent second guide rail, and each sliding frame has a sliding groove. The blocking frame is provided with a boss on the side close to the sliding frame, and each boss is embedded in the adjacent sliding groove.

[0008] In one embodiment, a first platform, a second platform and a third platform are provided in the sliding groove of the sliding frame. The second platform is located between the first platform and the third platform, and the second platform smoothly transitions to the first platform and the third platform via an inclined surface.

[0009] In one embodiment, the vertical height distribution of the third platform, the first platform, and the second platform is arranged from high to low.

[0010] In one embodiment, each sliding frame is fixed with a clamping block, and the connecting frame has a clamping opening on one side close to the clamping block. The clamping block cooperates with the clamping opening of the connecting frame to lock the position of the connecting frame.

[0011] In one embodiment, an air inlet frame is provided on the clean air box, and a plurality of air injection pipes are fixedly connected to the inner side of the top wall of the clean air box. The air outlet of the air inlet frame is fixedly connected to each air injection pipe, and each air injection pipe is provided with a nozzle near the bag opening of the dust bag.

[0012] The method for treating waste gas from the electrolyte of waste lithium batteries adopts the above-mentioned waste gas treatment device of waste lithium batteries, comprising the following steps: S1: The pre-treated dust-laden exhaust gas enters the filter box through the air inlet pipe, passes through the dust removal bag and the bottom filter cloth, and the dust is trapped on the outer surface of the dust removal bag. The purified gas enters the clean air box and is discharged from the air outlet pipe; S2: Start the motor to drive the screw, which drives the sliding frame to move. The block on the sliding frame first unlocks the connecting frame; S3: As the sliding frame continues to move, the blocking frame and filter cloth move downward, and after the bottom port of the dust bag is opened, air enters through the air inlet frame and is blown into the dust bag at high pressure, and the dust falls into the ash hopper; S4: The sliding frame continues to move backward, causing the connecting frame to rise as a whole, and the dust bag to relax. The airflow causes the relaxed dust bag to expand, shake and flap; S5: After the dust cleaning is completed, the motor reverses to make the sliding frame move in the opposite direction and reset. The filter cloth reseals the bottom port of the dust bag, the block locks the connecting frame, and the dust bag returns to the vertical tight state, and the exhaust gas can be filtered again.

[0013] Beneficial effect: The present invention solves the problem of difficult cleaning of the bag bottom through a unique cleaning mechanism, significantly improving the cleaning efficiency and service life of the dust collector bag; and in the cleaning process, the sealing frame and the filter cloth open the bag bottom, and cooperate with high-pressure pulse blowing to effectively remove dust inside and outside the bag and at the bottom, avoiding the accumulation of sticky dust to form a "dead zone"; at the same time, the connecting frame drives the bag into a relaxed state, enhancing the vibration effect caused by the pulse airflow, and further improving the dust stripping efficiency; the entire process is automatically linked and operated without excessive manual intervention, which greatly reduces system resistance, extends the equipment operation cycle, and improves the stability and energy efficiency of waste gas treatment. It is particularly suitable for the high-efficiency purification needs under complex working conditions such as waste gas from waste lithium battery electrolytes. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0015] Figure 2 It is a sectional view of the three-dimensional structure of the present invention.

[0016] Figure 3 It is a three-dimensional structural cross-sectional view of the first guide rail, connecting frame, filter cloth and other components of the present invention.

[0017] Figure 4 It is a schematic diagram of the exploded three-dimensional structure of the connecting frame and the blocking frame of the present invention.

[0018] Figure 5 It is a three-dimensional structural cross-sectional view of the screw, sliding frame, clamping block and other components of the present invention.

[0019] Figure 6 It is a schematic diagram of the three-dimensional structure of the motor, coupling, screw and other components of the present invention.

[0020] Figure 7 It is a schematic diagram of the three-dimensional structure of the sliding frame of the present invention.

[0021] Figure 8 It is a three-dimensional structural sectional view of the box frame, air inlet frame and air injection pipe of the present invention.

[0022] Figure 9 It is a schematic diagram of the three-dimensional structure of the air inlet frame and the air injection pipe of the present invention.

[0023] The names and serial numbers of the parts in the figure are: 101, box frame, 1011, filter box, 1012, clean air box, 102, dust bag, 103, air inlet pipe, 104, air outlet pipe, 105, first guide rail, 106, connecting frame, 107, blocking frame, 108, filter cloth, 109, telescopic rod, 201, second guide rail, 202, motor, 203, coupling, 204, screw, 205, sliding frame, 206, first platform, 207, second platform, 208, third platform, 301, block, 401, air inlet frame, 402, jet pipe. DETAILED DESCRIPTION

[0024] The above scheme is further described below with reference to specific examples. It should be understood that these examples are intended to illustrate the present application and are not intended to limit the scope of the present application. The implementation conditions used in the examples can be further adjusted according to the conditions of the specific manufacturer. The implementation conditions not specified are generally those used in routine experiments.

[0025] Example 1: Waste gas treatment device for waste lithium battery electrolyte, such as Figure 1 and Figure 2 As shown, it includes a box frame 101 as a supporting body, a filter box 1011 for primary dust sedimentation and accommodating the filtration system is fixedly connected to the box frame 101, a clean air box 1012 for collecting purified gas is fixedly connected to the filter box 1011, and evenly distributed dust bags 102 as core filter elements are fixedly connected to the bottom wall of the clean air box 1012. The upper ends of the dust bags 102 are fixed and suspended in the inner cavity of the filter box 1011, and an ash hopper for collecting settled dust is provided at the lower part of the filter box 1011. Its function is that when the exhaust gas enters the filter box 1011, under the action of airflow and gravity, larger particles of dust slide along the wall and enter the ash hopper, thereby realizing the preliminary separation of dust. The ash hopper is fixedly connected to an air inlet pipe 103 for introducing dust-laden exhaust gas, and the clean air box 1012 is fixedly connected to an air outlet pipe 104 for discharging clean gas.

[0026] like Figure 2 and Figure 3 As shown, the inner wall of the filter box 1011 is fixedly connected to symmetrically distributed first guide rails 105. A connecting frame 106 is fixedly connected between the bottoms of the evenly distributed dust bags 102, which is used to link the bottoms of all dust bags 102. The connecting frame 106 slides vertically between the symmetrically distributed first guide rails 105. The core function of the connecting frame 106 is to stabilize the array of dust bags 102 when exhaust gas enters the filter box 1011 through the intake pipe 103, preventing the dust bags 102 from swinging violently due to the impact of the gas, ensuring that the dust bags 102 can remain stably suspended in a vertical position, thereby ensuring the uniformity and efficiency of the filtration effect.

[0027] like Figure 3 and Figure 4As shown, in order to achieve bottom cleaning and specific operations, the bottom of each dust bag 102 is set to be open, and a sealing component for dynamically controlling the opening and closing state of the bottom port of the dust bag 102 is provided on the connecting frame 106. The sealing component includes telescopic rods 109 symmetrically fixed to the connecting frame 106 for providing vertical travel. A sealing frame 107 for performing port sealing and opening actions is fixed between the telescopic parts of each telescopic rod 109, and the bottom of the connecting frame 106 is in contact with the sealing frame 107; the sealing frame 107 is provided with a conical bracket matching its caliber near the bottom port of each dust bag 102, for precise matching and insertion and removal from the bag port. A filter cloth 108 is provided on the outer surface of each conical bracket, which is used to form a filtering surface when sealing to prevent gas short-circuiting and allow dust to be discharged when opening.

[0028] like Figure 5 and Figure 6 As shown, in order to realize the linkage control of the opening and closing of the bottom of the dust bag 102 and the lifting and lowering of the connecting frame 106 during the cleaning process, the inner wall of the filter box 1011 is fixedly connected with a symmetrically distributed second guide rail 201, and the outer wall of the filter box 1011 is installed with a symmetrically distributed motor 202 for providing a power source for the cleaning action. The output shaft of each motor 202 is provided with a coupling 203, and each coupling 203 is fixed with a screw 204 to convert the rotational motion of the motor 202 into the linear motion of the sliding frame 205. Each screw 204 is connected to the adjacent second guide rail 201. The two guide rails 201 are both rotatably connected, supporting the screw rod 204 and constraining it to only perform rotational movement. Each screw rod 204 is threadedly connected to a sliding frame 205. Each sliding frame 205 slides in the adjacent second guide rail 201 to ensure that the sliding frame 205 moves smoothly along the predetermined trajectory to prevent deflection. A sliding groove is provided in each sliding frame 205, and the blocking frame 107 is provided with a convex column on the side close to the sliding frame 205. Each convex column is embedded in an adjacent sliding groove to convert the horizontal movement of the sliding frame 205 into the vertical movement of the blocking frame 107.

[0029] like Figure 7 As shown, in order to realize a specific lifting sequence of the blocking frame 107 during the movement of the sliding frame 205, a first platform 206, a second platform 207 and a third platform 208 are provided in the sliding groove of the sliding frame 205, which define the height of the boss at different stroke positions, thereby controlling the opening and closing state of the blocking frame 107 and the position of the connecting frame 106; the second platform 207 is located between the first platform 206 and the third platform 208, and the second platform 207 smoothly transitions to the first platform 206 and the third platform 208 through an inclined surface, ensuring smooth movement of the boss when switching between different platforms and reducing impact.

[0030] In order to achieve the specific action requirements of opening, relaxing, vibrating and resetting the blockage at the bottom of the dust bag 102, the vertical height distribution of the third platform 208, the first platform 206 and the second platform 207 are set from high to low, that is, the third platform 208 is the highest, the first platform 206 is the second, and the second platform 207 is the lowest. This height difference design is to control the blocking frame 107 to first move down to open the bottom of the bag (to the lowest point) when the sliding frame 205 moves backward, and then move up to lift the connecting frame 106 to relax the dust bag 102 (to the highest point); when the sliding frame 205 moves forward to reset, it will move down briefly to discharge the residual dust, and finally rise to reset and block.

[0031] like Figure 6 As shown, in order to stabilize the dust bag 102 array and prevent it from swinging in the filtering state, each sliding frame 205 is fixed with a block 301 serving as a locking pin, and the connecting frame 106 has a bayonet serving as a locking groove on the side close to the block 301. The block 301 cooperates with the bayonet of the connecting frame 106 to achieve mechanical interlocking of the sliding frame 205 and the connecting frame 106, and fix the connecting frame 106 in the filtering stage to ensure that the dust bag 102 remains in a vertical and taut hanging state.

[0032] like Figure 8 and Figure 9 As shown, to achieve efficient dust cleaning, an air inlet frame 401 is provided on the clean air box 1012, which is connected to an external compressed air source and distributes high-pressure gas. Several jet pipes 402 are fixedly connected to the inner side of the top wall of the clean air box 1012, directing the high-pressure gas to the top of each dust bag 102. The air outlet of the air inlet frame 401 is fixedly connected to each jet pipe 402 to establish a gas transmission channel. To accurately and efficiently remove dust accumulated on the surface of the dust bag 102, each jet pipe 402 is equipped with a nozzle near the bag opening of the dust bag 102, which concentrates and directs the high-pressure gas into the interior of the dust bag 102. During bag cleaning, the air inlet frame 401 uses the nozzles of the jet pipe 402 to pulse the dust bag 102, instantly releasing the high-pressure airflow, causing the dust bag 102 to expand and vibrate rapidly, thereby shaking off the dust attached to the outside.

[0033] Working Principle: Initially, the connecting frame 106 is locked in its initial position by the latch 301, ensuring that the dust bags 102 remain vertically suspended and taut within the filter box 1011. The conical brackets on the sealing frame 107 and the filter cloth 108 covering them fit snugly around the bottom openings of the dust bags 102, creating an effective seal. At this point, the protruding post of the sealing frame 107 is located at the first platform 206 of the slideway of the sliding frame 205.

[0034] The pretreated electrolyte waste gas first enters filter box 1011 through air inlet pipe 103. The dust-laden gas then passes from the outside inward through dust bag 102 and its bottom filter cloth 108. Dust particles are efficiently trapped on the outer surface of dust bag 102, forming a dust layer. The purified gas then passes through dust bag 102 into its interior, ascending to clean air box 1012, and ultimately discharged through air outlet pipe 104 or enters subsequent processing units.

[0035] When dust accumulation on the surface of dust bag 102 causes the system pressure differential to rise to a set value (or reaches a preset cleaning cycle), the cleaning system activates. The cleaning process is a multi-step, coordinated operation designed to thoroughly remove dust accumulation inside and outside the bag and restore filtration efficiency: The control motor 202 is activated, driving the screw 204 to rotate via the coupling 203. The screw 204 drives the slide 205 backward along the second guide rail 201, and the block 301 fixed to the slide 205 moves backward synchronously, disengaging the engagement with the latch on the connecting frame 106 and unlocking the connecting frame 106.

[0036] As the sliding frame 205 moves backward, the second platform 207 of its chute (at its lowest position) moves to contact the protrusion of the blocking frame 107. The sliding frame 205, via the second platform 207, drives the blocking frame 107 and the filter cloth 108 thereon downward, causing the blocking frame 107 to detach from the connecting frame 106, and the telescopic portion of the telescopic rod 109 to extend. The blocking frame 107 and the filter cloth 108 detach from the bottom port of the dust bag 102, opening the bag bottom and allowing dust to fall out.

[0037] With the bag bottom open, the pulse cleaning system activates: compressed air is distributed through the air inlet frame 401 to each air nozzle 402, which then delivers high-pressure pulses of air into the corresponding dust bag 102. This high-pressure airflow instantaneously impacts the dust bag 102 in a reverse direction, primarily achieving two goals: dislodging and sweeping away any settled dust that may have entered the bag's internal cavity and bottom area through gaps or damage, and discharging it through the open bag bottom port into the dust hopper. Simultaneously, it removes dust adhering to the inner surface of the bottom filter cloth 108. The blown-off dust falls by gravity into the dust hopper at the bottom of the filter box 1011.

[0038] As the sliding frame 205 continues to move backward, the third platform 208 of its chute (at its highest position) moves until it contacts the protrusion of the blocking frame 107. The sliding frame 205, via the third platform 208, drives the blocking frame 107 and the filter cloth 108 thereon upward, causing the blocking frame 107 to re-engage with the connecting frame 106. Because the third platform 208 is higher than the initial first platform 206, the upward movement of the blocking frame 107 drives the connecting frame 106 upward as a whole, shortening the telescopic rod 109 and returning it to its original position. The upward movement of the connecting frame 106 causes the dust bag 102 to relax from its taut state.

[0039] While the dust bag 102 is relaxed, pulse jetting continues: the high-pressure airflow causes the relaxed dust bag 102 to significantly expand and vibrate. This releases tension in the dust bag 102, and combined with the greater elastic deformation induced by the pulsed airflow, this significantly enhances the vibration effect that peels off the dust layer on the dust bag 102's surface, making it easier to remove adherent dust, significantly improving cleaning efficiency and thoroughness. The shaken-off dust falls into the dust hopper.

[0040] After dust removal is complete, the motor 202 is controlled to reverse, driving the slide 205 forward (in its initial direction). During this movement, the slide 205's chute passes through the third platform 208, the second platform 207, and the first platform 206. The protruding column moves along the chute, driving the blocking frame 107 and the connecting frame 106 to undergo a brief descent to release residual dust, and then finally ascend along the second platform 207 to return to the first platform 206.

[0041] When the sliding frame 205 returns to its initial position, the protrusion of the blocking frame 107 rests on the first platform 206, and the filter cloth 108 reseals the bottom port of the dust bag 102. The locking block 301 reengages the latch of the connecting frame 106, locking the connecting frame 106 in place. The dust bag 102 resumes its vertical, taut suspension state. The device is ready to resume the filtration phase.

[0042] Example 2: A method for treating waste gas from the electrolyte of waste lithium batteries, using the above-mentioned waste gas treatment device for the electrolyte of waste lithium batteries, comprises the following steps: S1: Filtration start-up and exhaust gas treatment Ensure that the device is in the initial state. The pre-treated waste lithium battery electrolyte dust-containing exhaust gas is passed into the filter box 1011 through the air inlet pipe 103. The dust-containing gas passes through the dust bag 102 and the filter cloth 108 at the bottom from the outside to the inside. The dust particles are trapped on the outer surface of the dust bag 102 to form a dust layer. The purified gas passes through the dust bag 102 and enters the clean air box 1012 and is discharged through the air outlet pipe 104. S2: Dust cleaning trigger and connection frame 106 unlock When the system pressure difference reaches the set value or the preset cleaning cycle is reached, the cleaning system is started, the symmetrically distributed motors 202 are controlled to start, and the screws 204 are driven to rotate through the coupling 203, driving the sliding frame 205 to move backward along the second guide rail 201. The block 301 fixed on the sliding frame 205 then moves backward, disengaging from the engagement with the bayonet of the connecting frame 106, unlocking the connecting frame 106; S3: Bag bottom opening and internal cleaning The sliding frame 205 moves backward, and the second platform 207 at the lowest point of its slide moves to contact the convex column of the blocking frame 107, so that the blocking frame 107 and the filter cloth 108 move downward, the bottom port of the dust bag 102 is opened, and the pulse spraying system is started. Compressed air passes through the air inlet frame 401, the air injection pipe 402 and the nozzle, and is sprayed into the dust bag 102 with high-pressure pulses, shaking off and blowing away the settled dust in the internal cavity of the dust bag 102 and the bottom area of ​​the bag, and removing the dust attached to the inner surface of the bottom filter cloth 108, and the dust falls into the dust hopper; S4: Dust bag 102 loosening and deep vibration cleaning The sliding frame 205 continues to move backward, and the third platform 208, the highest point of its slide, contacts the blocking frame 107, driving the blocking frame 107 and the filter cloth 108 to move upward, and driving the connecting frame 106 to move upward as a whole, so that the dust bag 102 changes from a tight state to a relaxed state. The high-pressure airflow causes the relaxed dust bag 102 to significantly expand, shake and flap, and completely remove the dust layer on the surface of the dust bag 102; S5: Reset lock and prepare filtering After the dust cleaning is completed, the control motor 202 is reversed, and the sliding frame 205 moves in the opposite direction, driving the blocking frame 107 and the connecting frame 106 to drop briefly to open the bottom of the bag to discharge the residual dust, and finally rise and reset to the first platform 206. The filter cloth 108 reseals the bottom port of the dust bag 102, and the block 301 locks the position of the connecting frame 106. The dust bag 102 resumes its vertical and tight hanging state. The device is reset and the S1 step can be executed again to filter the exhaust gas.

[0043] The above description is merely an example of the present invention and is not intended to limit the present invention. Any equivalent substitutions made within the principles of the present invention are intended to be included within the scope of protection of the present invention. Any content not elaborated in detail herein is already known to those skilled in the art.

Claims

1. A waste lithium battery electrolyte waste gas treatment device, comprising a box frame (101), a filter box (1011) fixedly connected to the box frame (101), an ash hopper provided on the filter box (1011), an air inlet pipe (103) fixedly connected to the ash hopper, a clean air box (1012) fixedly connected to the filter box (1011), an air outlet pipe (104) fixedly connected to the clean air box (1012), dust removal bags (102) evenly distributed fixedly connected to the bottom wall of the clean air box (1012), and upper ends of the dust removal bags (102) fixedly fixed and suspended in the inner cavity of the filter box (1011); Its characteristics are: The inner wall of the filter box (1011) is fixedly connected to symmetrically distributed first guide rails (105), and a connecting frame (106) is fixedly connected between the bottoms of the evenly distributed dust removal bags (102), and the connecting frame (106) slides vertically between the symmetrically distributed first guide rails (105); The bottom of each dust removal bag (102) is arranged in an open shape, and a blocking component for controlling the opening and closing state of the bottom port of the dust removal bag (102) is provided on the connecting frame (106).

2. The waste lithium battery electrolyte waste gas treatment device according to claim 1, characterized in that: The blocking assembly comprises telescopic rods (109) symmetrically fixed to the connecting frame (106), a blocking frame (107) is fixed between the telescopic parts of each telescopic rod (109), and the blocking frame (107) is provided with a conical bracket matching the caliber of each dust bag (102) near the bottom port of each dust bag (102), and a filter cloth (108) is provided on the outer surface of each conical bracket.

3. The waste lithium battery electrolyte waste gas treatment device according to claim 2, characterized in that: The inner wall of the filter box (1011) is fixedly connected to a symmetrically distributed second guide rail (201), and the outer wall of the filter box (1011) is installed with symmetrically distributed motors (202), the output shaft of each motor (202) is provided with a coupling (203), each coupling (203) is fixedly connected to a screw rod (204), each screw rod (204) is rotatably connected to an adjacent second guide rail (201), each screw rod (204) is threadedly connected to a sliding frame (205), each sliding frame (205) slides in an adjacent second guide rail (201), each sliding frame (205) is provided with a sliding groove, and the blocking frame (107) is provided with a convex column on a side close to the sliding frame (205), and each convex column is embedded in an adjacent sliding groove.

4. The waste lithium battery electrolyte waste gas treatment device according to claim 3, characterized in that: A first platform (206), a second platform (207) and a third platform (208) are provided in the slide groove of the sliding frame (205), the second platform (207) is located between the first platform (206) and the third platform (208), and the second platform (207) smoothly transitions to the first platform (206) and the third platform (208) through an inclined surface.

5. The waste lithium battery electrolyte waste gas treatment device according to claim 4, characterized in that: The third platform (208), the first platform (206), and the second platform (207) are arranged in a vertical height distribution from high to low.

6. The waste gas treatment device for waste lithium battery electrolyte according to claim 5, characterized in that: Each sliding frame (205) is fixed with a clamping block (301), and the connecting frame (106) is provided with a clamping opening on a side close to the clamping block (301). The clamping block (301) cooperates with the clamping opening of the connecting frame (106) to lock the position of the connecting frame (106).

7. The waste gas treatment device for waste lithium battery electrolyte according to claim 6, characterized in that: An air inlet frame (401) is provided on the clean air box (1012), a plurality of air jet pipes (402) are fixedly connected to the inner side of the top wall of the clean air box (1012), an air outlet of the air inlet frame (401) is fixedly connected to each air jet pipe (402), and each air jet pipe (402) is provided with a nozzle near the bag opening of the dust removal bag (102).

8. A method for treating waste gas from the electrolyte of waste lithium batteries, applied to the waste gas treatment device for the electrolyte of waste lithium batteries according to claim 7, comprising the following steps: S1: The pre-treated dust-laden exhaust gas enters the filter box (1011) through the air inlet pipe (103), passes through the dust bag (102) and the bottom filter cloth (108), and the dust is trapped on the outer surface of the dust bag (102). The purified gas enters the clean air box (1012) and is discharged from the air outlet pipe (104); S2: Start the motor (202) to drive the screw (204), which drives the sliding frame (205) to move, and the block (301) on the sliding frame (205) first unlocks the connecting frame (106); S3: When the sliding frame (205) continues to move, the blocking frame (107) and the filter cloth (108) move downward, and after the bottom port of the dust bag (102) is opened, air is introduced through the air inlet frame (401) and blown into the dust bag (102) at high pressure, and the dust falls into the ash hopper; S4: The sliding frame (205) continues to move backward, causing the connecting frame (106) to rise as a whole, and the dust bag (102) to relax. The airflow causes the relaxed dust bag (102) to expand, shake, and flap; S5: After the dust cleaning is completed, the motor (202) is reversed to move the sliding frame (205) in the opposite direction and reset, the filter cloth (108) reseals the bottom port of the dust bag (102), the block (301) locks the connecting frame (106), and the dust bag (102) returns to the vertical tension state, and exhaust gas filtering can be performed again.

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