Waste Lithium Battery Electrolyte Waste Gas Treatment Device and Method

Abstract

This invention discloses a device and method for treating waste lithium battery electrolyte waste gas, relating to the field of waste lithium battery electrolyte waste gas treatment. The waste lithium battery electrolyte waste gas treatment device includes a frame, a filter box fixedly connected to the frame, an ash hopper on the filter box, an air inlet pipe fixedly connected to the ash hopper, a clean air box fixedly connected to the filter box, an air outlet pipe fixedly connected to the clean air box, and uniformly distributed dust collector bags fixedly connected to the bottom wall of the clean air box. The upper ends of the dust collector bags are fixed and suspended in the inner cavity of the filter box. This invention solves the problem of difficult bottom cleaning of the bags through a dust removal mechanism, improving the efficiency and lifespan of the dust collector bags. During dust removal, the sealing frame opens the bottom of the bags, and high-pressure jet cleaning removes accumulated ash, preventing sticky dust from forming "dead zones." Loosening the bags enhances the vibration effect, improving the dust removal rate. The process is automated, reducing resistance and extending the operating cycle, making it suitable for complex waste gas purification.

Description

Technical Field

[0001] This invention relates to the field of waste lithium battery electrolyte waste gas treatment, and more particularly to waste lithium battery electrolyte waste gas treatment apparatus and method. Background Technology

[0002] In the recycling of spent lithium batteries, the electrolyte waste gas generated during the drying, pyrolysis, 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. Current mainstream processes employ a tiered purification system: multi-source waste gas is combined and then fed into a cyclone separator, where it is mixed and conditioned with injected calcium oxide. Centrifugal force is used to achieve the initial removal of coarse particles and condensed tar; the pretreated gas then enters a baghouse dust collector for fine dust removal.

[0003] However, existing baghouse dust collectors have significant bottlenecks. Their bottom-inlet design uses a blower to drive dust-laden gas into the collector from the bottom, utilizing the internal positive pressure environment to improve the treatment efficiency of large-flow exhaust gas, and has low structural sealing requirements. However, during the cleaning process, due to the limited space at the bottom of the filter bags and their tight fixing, sticky dust and fine particles easily accumulate, forming a "dead zone." Although the elastic shaking of the filter bags (such as airflow impact vibration or mechanical rapping) can help remove dust, the existing suspension structure cannot provide sufficient deformation space for the bottom of the bags, resulting in continuous dust accumulation. Long-term accumulation of dust hardens and cakes, causing localized blockage of the filter bags, increased system resistance, decreased filtration efficiency, and shortened lifespan, severely 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 exhaust gas, such as difficulty in cleaning the bottom of the bag, easy accumulation of sticky dust forming a "dead zone" and dust accumulation inside the bag, which leads to increased system resistance, decreased filtration efficiency and shortened equipment life, the purpose of this invention is to provide a waste lithium battery electrolyte exhaust gas treatment device and method.

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

[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 support matching the diameter of each dust collector bag near the bottom port of each dust collector bag, and filter cloth is provided on the outer surface of each conical support.

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

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

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

[0010] In one embodiment, each sliding frame is fixedly connected to a locking block, and the connecting frame has a locking slot on the side near the locking block. The position of the connecting frame is locked by the cooperation between the locking block and the locking slot of the connecting frame.

[0011] In one embodiment, the clean air box is provided with an air inlet frame, and several jet 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 jet pipe, and each jet pipe is provided with a nozzle near the bag opening of the dust collector bag.

[0012] A method for treating waste lithium battery electrolyte waste gas, using the aforementioned waste lithium battery electrolyte waste gas treatment device, includes the following steps:

[0013] S1: The pre-treated dusty exhaust gas enters the filter box through the inlet pipe, passes through the dust collector bag and the bottom filter cloth, and the dust is trapped on the outer surface of the dust collector bag. The purified gas enters the clean air box and is discharged through the outlet pipe.

[0014] S2: Start the motor to drive the screw, which moves the sliding frame. The locking block on the sliding frame first unlocks the connecting frame.

[0015] S3: As the sliding frame continues to move, the sealing frame and filter cloth move down, opening the bottom port of the dust collector bag. Air is then introduced through the air inlet frame and high-pressure jetting is performed into the dust collector bag, causing the dust to fall into the ash hopper.

[0016] S4: The sliding frame continues to move backward, causing the connecting frame to rise as a whole, the dust collector bag to loosen, and the airflow causes the loose dust collector bag to expand, shake and beat.

[0017] S5: After the dust removal is completed, the motor reverses to move the sliding frame in the opposite direction and reset it. The filter cloth reseals the bottom port of the dust collector bag, the locking block locks the connecting frame, and the dust collector bag returns to a vertical and taut state, so that it can be filtered for exhaust gas again.

[0018] Beneficial effects: This invention solves the problem of difficult bottom cleaning of dust collector bags through a unique dust removal mechanism, significantly improving the dust removal efficiency and service life of dust collector bags. During the dust removal process, the sealing frame and filter cloth open the bottom of the bag, and in conjunction with high-pressure pulse jet cleaning, effectively removes the dust accumulated inside and outside the bag and at the bottom, avoiding the formation of "dead zones" due to the accumulation of sticky dust. 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 removal efficiency. The entire process is automated and linked, requiring minimal manual intervention, greatly reducing system resistance, extending the equipment's operating cycle, and improving 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 lithium battery electrolyte waste gas. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 This is a three-dimensional structural cross-sectional view of the present invention.

[0021] Figure 3 This is a three-dimensional structural cross-sectional view of the first guide rail, connecting frame, and filter cloth components of the present invention.

[0022] Figure 4 This is an exploded three-dimensional structural diagram of the connecting frame and sealing frame of the present invention.

[0023] Figure 5 This is a three-dimensional structural cross-sectional view of the screw, sliding frame, and locking block components of the present invention.

[0024] Figure 6 This is a three-dimensional structural diagram of the motor, coupling, screw, and other components of the present invention.

[0025] Figure 7 This is a three-dimensional structural diagram of the sliding frame of the present invention.

[0026] Figure 8 This is a three-dimensional structural cross-sectional view of the frame, air inlet frame, and jet pipe of the present invention.

[0027] Figure 9 This is a three-dimensional structural diagram of the air intake frame and jet pipe of the present invention.

[0028] The component names and serial numbers in the diagram are as follows: 101, frame; 1011, filter box; 1012, clean air box; 102, dust collector bag; 103, air inlet pipe; 104, air outlet pipe; 105, first guide rail; 106, connecting frame; 107, sealing 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, locking block; 401, air inlet frame; 402, jet pipe. Detailed Implementation

[0029] The above-described solution will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of this application. The implementation conditions used in the embodiments may be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are generally those in routine experiments.

[0030] Example 1: Waste lithium battery electrolyte waste gas treatment device, such as Figure 1 and Figure 2 As shown, the system includes a frame 101 as the main support, a filter box 1011 for primary dust settling and containing the filtration system fixedly connected to the frame 101, a clean air box 1012 for collecting purified gas fixedly connected to the filter box 1011, and uniformly distributed dust collector bags 102 as core filter elements fixedly connected to the bottom wall of the clean air box 1012. The upper ends of the dust collector bags 102 are fixed and suspended in the inner cavity of the filter box 1011. The lower part of the filter box 1011 is provided with a dust collection hopper for collecting settled dust. Its function is that when the exhaust gas enters the filter box 1011, under the action of airflow and gravity, larger dust particles slide down the wall and enter the dust collection hopper, realizing the initial separation of dust. An air inlet pipe 103 for introducing dust-laden exhaust gas is fixedly connected to the dust collection hopper, and an air outlet pipe 104 for discharging clean gas is fixedly connected to the clean air box 1012.

[0031] like Figure 2 and Figure 3 As shown, the inner wall of the filter box 1011 is fixed with symmetrically distributed first guide rails 105. A connecting frame 106, used to link the bottoms of all the uniformly distributed dust collector bags 102, is fixed between them. The connecting frame 106 slides vertically between the symmetrically distributed first guide rails 105. The core function of this connecting frame 106 is to stabilize the array of dust collector bags 102 when exhaust gas enters the filter box 1011 through the inlet pipe 103, preventing the dust collector bags 102 from violently swinging due to the impact of the gas, ensuring that the dust collector bags 102 can stably maintain a vertically suspended state, thereby guaranteeing the uniformity and efficiency of the filtration effect.

[0032] like Figure 3 and Figure 4As shown, to achieve bottom cleaning and specific operations, the bottom of each dust collector bag 102 is open. The connecting frame 106 is equipped with a sealing assembly for dynamically controlling the opening and closing state of the bottom port of the dust collector bag 102. The sealing assembly includes telescopic rods 109 symmetrically fixed to the connecting frame 106 to provide vertical stroke. A sealing frame 107 for performing port sealing and opening actions is fixed between the telescopic parts of each telescopic rod 109. The bottom of the connecting frame 106 contacts the sealing frame 107. The sealing frame 107 is provided with a conical bracket matching its diameter near the bottom port of each dust collector bag 102 for precise matching and insertion and release from the bag opening. Filter cloth 108 is provided on the outer surface of each conical bracket to form a filter surface when sealing, preventing gas short circuit, and allowing dust to be discharged when opening.

[0033] like Figure 5 and Figure 6 As shown, to achieve the linkage control of the opening and closing of the bottom of the dust collector bag 102 and the lifting and lowering of the connecting frame 106 during the dust removal process, symmetrically distributed second guide rails 201 are fixed to the inner wall of the filter box 1011, and symmetrically distributed motors 202 are installed on the outer wall of the filter box 1011 to provide the power source for the dust removal action. Each motor 202 has a coupling 203 on its output shaft, 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 204. Both guide rails 201 are rotatably connected, supporting the screw 204 and constraining it to only rotate. Each screw 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 a predetermined trajectory and prevents deflection. Each sliding frame 205 has a groove. The sealing frame 107 has a protrusion on the side near the sliding frame 205. Each protrusion is embedded in the adjacent groove, converting the horizontal movement of the sliding frame 205 into the vertical movement of the sealing frame 107.

[0034] like Figure 7 As shown, in order to achieve a specific lifting sequence of the sealing frame 107 during the movement of the sliding frame 205, the sliding frame 205 is provided with a first platform 206, a second platform 207 and a third platform 208 in the sliding groove, which defines the height of the protruding column at different stroke positions, thereby controlling the opening and closing state of the sealing 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 with the first platform 206 and the third platform 208 through the inclined surface, ensuring smooth movement of the protruding column when switching between different platforms and reducing impact.

[0035] To achieve the specific action requirements of opening the bottom of the dust collector bag 102, loosening the vibration, and resetting the seal, the third platform 208, the first platform 206, and the second platform 207 are arranged vertically from high to low, with the third platform 208 being the highest, the first platform 206 being the next highest, and the second platform 207 being the lowest. This height difference design is key to controlling the sealing 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 loosen the dust collector bag 102 (to the highest point); when the sliding frame 205 moves forward to reset, it moves down briefly to discharge residual ash, and then finally rises up to reset and reseal the bag.

[0036] like Figure 6 As shown, in order to stabilize the array of dust collector bags 102 and prevent them from swinging during filtration, each sliding frame 205 is fixed with a locking block 301 as a locking pin. The connecting frame 106 has a locking slot on the side near the locking block 301. Through the cooperation between the locking block 301 and the locking slot of the connecting frame 106, the sliding frame 205 and the connecting frame 106 are mechanically interlocked. The connecting frame 106 is fixed during the filtration stage to ensure that the dust collector bags 102 remain in a vertical and taut hanging state.

[0037] like Figure 8 and Figure 9 As shown, to achieve efficient dust removal, the clean air box 1012 is equipped with an air inlet frame 401, which is connected to an external compressed air source to distribute high-pressure gas. Several jet pipes 402 are fixedly connected to the inner side of the top wall of the clean air box 1012, guiding the high-pressure gas above each dust collector bag 102. The air outlet of the air inlet frame 401 is fixedly connected to each jet pipe 402 to establish a gas delivery channel. To accurately and efficiently remove dust accumulated on the surface of the dust collector bags 102, each jet pipe 402 is equipped with a nozzle near the bag opening of the dust collector bag 102, which concentrates and directs the high-pressure gas into the interior of the dust collector bag 102. During bag cleaning, the air inlet frame 401 pulses the air into the interior of the dust collector bag 102 through the nozzles of the jet pipes 402, instantly releasing high-pressure airflow, causing the dust collector bag 102 to expand and vibrate rapidly, thus shaking off the dust adhering to its outer surface.

[0038] Working principle: Initially, the connecting frame 106 is locked in its initial position by the locking block 301, ensuring that the dust collector bag 102 remains vertically suspended and taut within the filter box 1011. The conical bracket on the sealing frame 107 and the filter cloth 108 covering its surface tightly fit the bottom opening of each dust collector bag 102, forming an effective seal. At this time, the protrusion of the sealing frame 107 is located at the first platform 206 section of the sliding groove of the sliding frame 205.

[0039] The pretreated electrolyte waste gas first enters the filter box 1011 through the inlet pipe 103. The dust-laden gas passes through the dust collector bag 102 and the filter cloth 108 at its bottom from the outside to the inside. Dust particles are efficiently trapped on the outer surface of the dust collector bag 102, forming a dust layer. The purified gas passes through the dust collector bag 102 into its internal space, rises to the clean air box 1012, and is finally discharged through the outlet pipe 104 or enters the subsequent treatment unit.

[0040] When the dust accumulated on the surface of the dust collector bag 102 causes the system differential pressure to rise to a set value (or reaches the preset dust removal cycle), the dust removal system is activated. The dust removal process is a multi-step linkage operation, designed to deeply remove the dust accumulated inside and outside the bag and restore filtration efficiency: the control motor 202 is started, which drives the screw 204 to rotate through the coupling 203. The screw 204 drives the sliding frame 205 to move backward along the second guide rail 201. The locking block 301 fixed on the sliding frame 205 moves backward synchronously, disengaging from the locking position of the connecting frame 106 and unlocking the connecting frame 106.

[0041] As the sliding frame 205 moves backward, its second platform 207 (at its lowest position) moves to contact the protrusion of the sealing frame 107. The sliding frame 205, through the second platform 207, drives the sealing frame 107 and its filter cloth 108 downward. The sealing frame 107 disengages from the connecting frame 106, and the telescopic part of the telescopic rod 109 extends accordingly. The sealing frame 107 and filter cloth 108 disengage from the bottom port of the dust collector bag 102, opening the bag bottom and allowing dust to fall out.

[0042] With the bag bottom open, the pulse cleaning system is activated: compressed air is distributed to each jet pipe 402 via the air inlet frame 401, and high-pressure pulse jets are applied to the interior of the corresponding dust collector bag 102 through its nozzles. The high-pressure airflow impacts the dust collector bag 102 in a reverse instantaneous manner, mainly achieving two purposes: shaking off and blowing away any settled dust that may have entered the internal cavity and bottom area of ​​the dust collector bag 102 through gaps or damage, and discharging it through the open bottom port to the dust hopper. At the same time, it removes dust adhering to the inner surface of the bottom filter cloth 108. The blown-off dust falls into the dust hopper at the bottom of the filter box 1011 under gravity.

[0043] As the sliding frame 205 continues to move backward, its third platform 208 (at its highest position) moves to contact the protrusion of the sealing frame 107. The sliding frame 205, through the third platform 208, drives the sealing frame 107 and its filter cloth 108 upward, causing the sealing frame 107 to contact the connecting frame 106 again. Since the third platform 208 is higher than the initial first platform 206, the upward movement of the sealing frame 107 causes the connecting frame 106 to move upward as a whole, and the telescopic rod 109 shortens and resets. The upward movement of the connecting frame 106 causes the dust collector bag 102 to change from a taut to a relaxed state.

[0044] With the dust collector bag 102 in a relaxed state, pulse jet cleaning continues: the high-pressure airflow causes the relaxed dust collector bag 102 to expand and vibrate significantly. The relaxed state releases the tension of the dust collector bag 102, and combined with the greater elastic deformation caused by the pulse airflow, it greatly enhances the vibration effect of peeling off the dust layer on the surface of the dust collector bag 102, making it easier for adhering dust to fall off, significantly improving the cleaning efficiency and thoroughness, and the shaken-off dust falls into the ash hopper.

[0045] After the dust removal is completed, the control motor 202 reverses and drives the sliding frame 205 to move forward (initially). During the movement of the sliding frame 205, its slide groove passes through the third platform 208, the second platform 207 and the first platform 206 in sequence. The protrusion moves along the slide groove, causing the sealing frame 107 and the connecting frame 106 to undergo a process of "briefly descending to open and discharge residual dust, and finally rising along the second platform 207 to reset to the first platform 206".

[0046] When the sliding frame 205 returns to its initial position: the protrusion of the sealing frame 107 is located on the first platform 206, and the filter cloth 108 reseals the bottom port of the dust collector bag 102; the locking block 301 re-engages the locking jaw of the connecting frame 106, locking the position of the connecting frame 106; the dust collector bag 102 returns to a vertically taut suspended state. The device is ready and can re-enter the filtration stage.

[0047] Example 2: A method for treating waste lithium battery electrolyte waste gas, using the above-mentioned waste lithium battery electrolyte waste gas treatment device, includes the following steps:

[0048] S1: Filtration Start-up and Exhaust Gas Treatment

[0049] Ensure the device is in its initial state. Pre-treated waste lithium battery electrolyte dust-laden exhaust gas is introduced into the filter box 1011 through the air inlet pipe 103. The dust-laden gas passes through the dust collector bag 102 and the filter cloth 108 at its bottom from the outside to the inside. Dust particles are trapped on the outer surface of the dust collector bag 102 to form a dust layer. The purified gas passes through the dust collector bag 102 into the clean air box 1012 and is discharged through the air outlet pipe 104.

[0050] S2: Dust removal trigger and connector 106 unlocking

[0051] When the system differential pressure reaches the set value or the preset dust removal cycle is reached, the dust removal system is started, and the symmetrically distributed motors 202 are started. The screw 204 is driven to rotate through the coupling 203, which drives the sliding frame 205 to move backward along the second guide rail 201. The locking block 301 fixed on the sliding frame 205 moves backward and disengages from the locking slot of the connecting frame 106, thus unlocking the connecting frame 106.

[0052] S3: Bag bottom opening and internal dust cleaning

[0053] The sliding frame 205 moves backward, and the lowest point of its sliding groove, the second platform 207, moves to contact the protrusion of the sealing frame 107, causing the sealing frame 107 and the filter cloth 108 to move downward, opening the bottom port of the dust collector bag 102, starting the pulse jet cleaning system, and the compressed air passes through the air inlet frame 401, the jet pipe 402 and the nozzle to perform high-pressure pulse jet cleaning into the dust collector bag 102, shaking off and blowing away the settled dust in the internal cavity and bottom area of ​​the dust collector bag 102, removing the dust attached to the inner surface of the bottom filter cloth 108, and the dust falls into the dust hopper;

[0054] S4: Dust collector bag 102 relaxation and deep vibration cleaning

[0055] As the sliding frame 205 continues to move backward, the highest point of its sliding groove, the third platform 208, contacts the sealing frame 107, causing the sealing frame 107 and the filter cloth 108 to move upward, and causing the connecting frame 106 to move upward as a whole, so that the dust collector bag 102 changes from a tight state to a relaxed state. The high-pressure airflow causes the relaxed dust collector bag 102 to produce significant expansion, shaking and beating effects, thoroughly removing the dust layer on the surface of the dust collector bag 102.

[0056] S5: Reset Lock and Prepare Filtering

[0057] After the dust removal is completed, the control motor 202 reverses, the sliding frame 205 moves in the opposite direction, causing the sealing frame 107 and the connecting frame 106 to briefly descend and open the bottom of the bag to discharge residual dust, and finally rise and reset to the first platform 206. The filter cloth 108 reseals the bottom port of the dust collector bag 102, the locking block 301 locks the position of the connecting frame 106, and the dust collector bag 102 returns to a vertical and taut hanging state. The device reset is complete, and step S1 can be repeated to filter the exhaust gas.

[0058] The above description is merely an embodiment of the present invention and is not intended to limit the present invention. All equivalent substitutions made within the principles of the present invention should be included within the scope of protection of the present invention. Contents not described in detail in this invention are existing technologies known to those skilled in the art.

Claims

1. Waste lithium battery electrolyte waste gas treatment device, including a box frame (101), a filter box (1011) fixedly connected to the box frame (101), a dust hopper provided on the filter box (1011), an air inlet pipe (103) fixedly connected to the dust 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), and uniformly distributed dust collector bags (102) fixedly connected to the bottom wall of the clean air box (1012), with the upper end of the dust collector bags (102) fixed and suspended in the inner cavity of the filter box (1011); Its features are: The inner wall of the filter box (1011) is fixed with symmetrically distributed first guide rails (105), and the bottoms of the uniformly distributed dust collector bags (102) are fixed with connecting frames (106), which slide vertically between the symmetrically distributed first guide rails (105). Each dust collector bag (102) has an open bottom, and the connecting frame (106) is equipped with a sealing component to control the opening and closing state of the bottom port of the dust collector bag (102); The sealing assembly includes telescopic rods (109) symmetrically fixed to the connecting frame (106), and sealing frames (107) are fixed between the telescopic parts of each telescopic rod (109). Each sealing frame (107) is provided with a conical support matching its diameter at the bottom port of each dust collector bag (102), and filter cloth (108) is provided on the outer surface of each conical support. The inner wall of the filter box (1011) is fixed with symmetrically distributed second guide rails (201), and the outer wall of the filter box (1011) is equipped with symmetrically distributed motors (202). The output shaft of each motor (202) is provided with a coupling (203), and each coupling (203) is fixed with a screw (204). Each screw (204) is rotatably connected to the adjacent second guide rail (201). Each screw (204) is threadedly connected with a sliding frame (205). Each sliding frame (205) slides in the adjacent second guide rail (201). Each sliding frame (205) has a groove. The sealing frame (107) is provided with a protrusion on the side near the sliding frame (205). Each protrusion is embedded in the adjacent groove. The sliding frame (205) is provided with a first platform (206), a second platform (207) and a third platform (208) in the sliding groove. The second platform (207) is located between the first platform (206) and the third platform (208). The second platform (207) smoothly transitions with the first platform (206) and the third platform (208) through an inclined surface. The third platform (208), the first platform (206), and the second platform (207) are arranged from high to low in terms of vertical height distribution.

2. The waste lithium battery electrolyte waste gas treatment device as described in claim 1, characterized in that: Each sliding frame (205) is fixed with a locking block (301), and the connecting frame (106) has a locking slot on the side near the locking block (301). The locking block (301) and the locking slot of the connecting frame (106) are engaged to lock the position of the connecting frame (106).

3. The waste lithium battery electrolyte waste gas treatment device as described in claim 2, characterized in that: The clean air box (1012) is equipped with an air inlet frame (401). Several jet pipes (402) are fixedly connected to the inner side of the top wall of the clean air box (1012). The air outlet of the air inlet frame (401) is fixedly connected to each jet pipe (402). Each jet pipe (402) has a nozzle near the bag opening of the dust collector bag (102).

4. A method for treating waste lithium battery electrolyte waste gas, applied to the waste lithium battery electrolyte waste gas treatment device as described in claim 3, comprising the following steps: S1: The pretreated dusty exhaust gas enters the filter box (1011) through the inlet pipe (103), passes through the dust collector bag (102) and the bottom filter cloth (108), and the dust is trapped on the outer surface of the dust collector bag (102). The purified gas enters the clean air box (1012) and is discharged through the outlet pipe (104). S2: Start the motor (202) to drive the screw (204), which in turn moves the sliding frame (205). The locking block (301) on the sliding frame (205) first unlocks the connecting frame (106). S3: When the sliding frame (205) continues to move, the sealing frame (107) and filter cloth (108) move down, and after opening the bottom port of the dust collector bag (102), air is introduced through the air inlet frame (401) and high-pressure blowing is performed into the dust collector bag (102), 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, the dust collector bag (102) to loosen, and the airflow causes the loose dust collector bag (102) to expand, shake and beat; S5: After the dust removal is completed, the motor (202) reverses to make the sliding frame (205) move in the opposite direction to reset, the filter cloth (108) reseals the bottom port of the dust collector bag (102), the locking block (301) locks the connecting frame (106), and the dust collector bag (102) returns to a vertical and taut state, and can be filtered for exhaust gas again.

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