Gas-solid separation device for positive electrode material incinerator

Abstract

The utility model discloses a kind of positive electrode material incinerator gas-solid separation devices, it is related to separation device technical field, including: incinerator body, primary filter and secondary filter, the air inlet is fixedly installed on the one side outer surface of incinerator body, the other side outer surface of cyclone dust collector is fixedly connected with second exhaust pipe and the other end of second exhaust pipe is fixedly connected with primary filter, the one side outer surface of condensing chamber is fixedly connected with fourth exhaust pipe, the top of secondary filter is fixedly installed with feeding port, the one side outer surface of secondary filter is fixedly installed with air outlet. The utility model is by the cooperation of being installed with cyclone dust collector and downcomer, collector, collect the particulate matter in tail gas on one hand, recombust on the other hand, enhance the decomposition effect of particulate matter, metal filter screen is used in multiple groups, on one hand, can further enhance filtering effect, secondly, also facilitate disassembly cleaning.

Description

Technical Field

[0001] This utility model relates to the field of separation device technology, specifically a gas-solid separation device for a cathode material incinerator. Background Technology

[0002] In the composition of lithium-ion batteries, the quality of the cathode material is a crucial factor determining the electrochemical and safety performance of the battery. Currently, in the cathode material production process, to produce lithium-ion battery cathode materials with uniform reaction, high crystallinity, uniform porosity, small surface area, apparent specific gravity, and stable electrochemical performance, sintering processes are often performed using crystallographic and aerodynamic principles. Currently, the exhaust gases from cathode material sintering are often directly emitted. These exhaust gases contain heavy metals such as Ni and dust. The floating and settling of heavy metals and dust can cause air, water, and soil pollution, seriously harming the environment and endangering humans and animals. Therefore, an effective exhaust gas treatment method is needed to address these problems.

[0003] Patent document CN209221773U discloses a gas-solid separation device, which includes "a gas-solid separation device body, a gas inlet to be separated located on the upper right side of the gas-solid separation device body, a separated gas outlet located on the top of the gas-solid separation device body, the gas-solid separation device having an internal separation cylinder located inside the gas-solid separation device body, an inner cylinder support connecting the internal separation cylinder and the gas-solid separation device body, a wire mesh demister located below the separated gas outlet, an internal upper baffle plate installed inside the internal separation cylinder, an internal lower baffle plate installed inside the internal separation cylinder, and a bottom overflow valve located at the bottom of the gas-solid separation device body. The gas-solid separation device of this utility model can quickly and efficiently separate gas and solids, solving the problem of easily carrying solids to subsequent processes and reducing the difficulty of subsequent processing."

[0004] However, the gas-solid separation device in the aforementioned published literature mainly addresses the shortcomings of the previous method, which easily carried solids to the downstream process and reduced the difficulty of downstream processing. However, it has the problem of not being convenient for multi-stage treatment of exhaust gas.

[0005] Therefore, it is necessary to develop a multi-layer treatment mechanism to perform multi-layer treatment of exhaust gas and improve the purification level. Utility Model Content

[0006] The purpose of this utility model is to provide a gas-solid separation device for a cathode material incinerator, so as to solve the technical problem mentioned in the background art of enabling the gas-solid separation device for a cathode material incinerator to have multi-layer processing function.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a gas-solid separation device for a cathode material incinerator, comprising: an incinerator body, a primary filter, and a secondary filter; An air inlet is fixedly installed on one side of the outer surface of the incinerator body. A first exhaust pipe is fixedly connected to the top of the incinerator body. A cyclone dust collector is fixedly connected to the other end of the first exhaust pipe. A return pipe is fixedly connected to the bottom of the cyclone dust collector and is fixedly connected to the other side of the outer surface of the incinerator body. A second exhaust pipe is fixedly connected to the other side of the outer surface of the cyclone dust collector, and a primary filter is fixedly connected to the other end of the second exhaust pipe. A third exhaust pipe is fixedly connected to the bottom outer surface of the primary filter, and a condensation chamber is fixedly connected to the other end of the third exhaust pipe. A fourth exhaust pipe is fixedly connected to one side of the outer surface of the condensation chamber. A secondary filter is fixedly connected to the other end of the fourth exhaust pipe. A feed port is fixedly installed on the top of the secondary filter, and an air outlet is fixedly installed on one side of the outer surface of the secondary filter.

[0008] Preferably, the primary filter is provided with a metal filter screen inside, the metal filter screen has a mesh size of 1-3 micrometers, is made of 304 / 316L stainless steel, and there are six sets of such screens.

[0009] Preferably, a water tank is fixedly connected to one side of the outer surface of the condensing chamber, a coil is fixedly connected to one end of the water tank, the coil extends into the condensing chamber, the condensing chamber can reduce the temperature to within 300°C, and a water outlet is fixedly connected to the other end of the coil, the water outlet is fixedly installed on the other side of the outer surface of the condensing chamber.

[0010] Preferably, the inner bottom layer of the secondary filter is provided with an activated carbon layer, which is resistant to high temperature of 400-550℃. An alkaline water layer is added above the activated carbon layer. A pH meter is fixedly installed on the other outer surface of the secondary filter, and the pH meter extends into the alkaline water layer.

[0011] Preferably, a discharge pipe is provided on one side of the bottom of the return pipe, and a collection box is movably installed at the bottom of the discharge pipe.

[0012] Preferably, the inner wall of the secondary filter is provided with a processing mechanism for facilitating the replacement of the alkaline water layer and the activated carbon layer. The processing mechanism includes a water replacement pipe and a disassembly groove. The outer wall of the secondary filter is equipped with a water replacement pipe, and one end of the water replacement pipe extends into the interior of the secondary filter. The inner wall of the water replacement pipe is equipped with a solenoid valve, and the outer wall of the water replacement pipe is equipped with a connecting flange.

[0013] Preferably, the inner wall of the secondary filter is equipped with a limit block, the inner wall of the secondary filter is provided with a disassembly groove, the outer wall of the secondary filter is equipped with a hinge, the outer wall of the hinge is equipped with a sealing door plate, the outer wall of the secondary filter is provided with a locking screw groove, the outer wall of the sealing door plate is equipped with a locking screw, and one end of the locking screw extends into the interior of the locking screw groove.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model, through the combined use of a cyclone dust collector, a feed pipe, and a collection box, collects particulate matter in the exhaust gas on one hand and re-burns it on the other, enhancing the decomposition effect of the particulate matter. Multiple sets of metal filters work together to further enhance the filtration effect and facilitate disassembly and cleaning. The condensation chamber lowers the temperature of the exhaust gas and utilizes the heat in the exhaust gas through heat exchange. The presence of activated carbon and alkaline solution neutralizes acidic gases in the exhaust gas and further filters particles, preventing environmental harm. The primary filter provides initial filtration of the exhaust gas, and the metal filter... It can effectively intercept large particles. Then, a secondary filter is fixedly connected to the other end of the fourth exhaust pipe for secondary filtration. An exhaust port is fixedly installed on one side of the outer surface of the secondary filter. The filtered and cleaned exhaust gas is discharged through this port. The bottom layer of the secondary filter is set with an activated carbon layer, which can further adsorb fine particles in the exhaust gas and perform solid-gas separation. An alkaline water layer is added above the activated carbon layer to neutralize the weakly acidic substances in the exhaust gas. A pH detector is fixedly installed on the other side of the outer surface of the secondary filter and extends into the alkaline water layer to control the pH of the secondary filter in real time and adjust it at any time, thereby achieving the effect of multi-layer treatment of exhaust gas. 2. This utility model, through the installation of a processing mechanism, facilitates the replacement of the alkaline water layer and the activated carbon layer. Existing activated carbon layers require periodic replacement after gas filtration, as does the alkaline water layer. Therefore, convenient replacement of these two parts is necessary. Firstly, when the alkaline water layer needs to be extracted, it is connected to an external adsorption pipe via a connecting flange. Then, the solenoid valve operates, allowing flow within the water exchange pipe. The alkaline water layer in the secondary filter is then extracted through the water exchange pipe for easy refilling with a new layer. When the activated carbon layer needs to be replaced, the locking screw is removed from the locking screw groove. The hinge opens the sealing door without sealing the disassembly slot, allowing the activated carbon layer to be pulled out between the two sets of limiting blocks for disassembly. Replacement simply requires placing the activated carbon layer between the two sets of limiting blocks, allowing both the alkaline water layer and the activated carbon layer to be replaced simultaneously. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the front structure of the incinerator body of this utility model; Figure 2This is a schematic diagram of the front structure of the metal filter screen of this utility model; Figure 3 For the present utility model Figure 1 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the front structure of the secondary filter of this utility model; Figure 5 This is a schematic diagram of the side structure of the water exchange pipe of this utility model.

[0016] In the diagram: 1. Incinerator body; 2. Air inlet; 3. First exhaust pipe; 4. Cyclone dust collector; 5. Second exhaust pipe; 6. Metal filter screen; 7. Primary filter; 8. Third exhaust pipe; 9. Water tank; 10. Coil; 11. Water outlet; 12. Fourth exhaust pipe; 13. Feed inlet; 14. Air outlet; 15. Alkali water layer; 16. Activated carbon layer; 17. pH meter; 18. Return pipe; 19. Condensation chamber; 20. Secondary filter; 21. Collection box; 22. Feed pipe; 23. Water exchange pipe; 24. Solenoid valve; 25. Connecting flange; 26. Limit block; 27. Disassembly groove; 28. Hinge; 29. ​​Sealing door panel; 30. Locking screw groove; 31. Locking screw. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] Please see Figure 1 , Figure 2 and Figure 3A gas-solid separation device for a cathode material incinerator includes: an incinerator body 1, a primary filter 7, and a secondary filter 20. An air inlet 2 is fixedly installed on one outer surface of the incinerator body 1. A first exhaust pipe 3 is fixedly connected to the top of the incinerator body 1. A cyclone dust collector 4 is fixedly connected to the other end of the first exhaust pipe 3. A return pipe 18 is fixedly connected to the bottom of the cyclone dust collector 4 and is also fixedly connected to the other outer surface of the incinerator body 1. A second exhaust pipe 5 is fixedly connected to the other outer surface of the cyclone dust collector 4, and the primary filter 7 is fixedly connected to the other end of the second exhaust pipe 5. A third exhaust pipe 8 is fixedly connected to the bottom outer surface of the primary filter 7, and a condensation chamber 19 is fixedly connected to the other end of the third exhaust pipe 8. A condensation chamber 19 is fixedly connected to one outer surface of its side. There is a fourth exhaust pipe 12, and a secondary filter 20 is fixedly connected to the other end of the fourth exhaust pipe 12. A feed port 13 is fixedly installed on the top of the secondary filter 20, and an air outlet 14 is fixedly installed on one side of the outer surface of the secondary filter 20. A metal filter screen 6 is installed inside the primary filter 7. The metal filter screen 6 has a mesh size of 1-3 microns, is made of 304 / 316L stainless steel, and there are six sets. A water tank 9 is fixedly connected to one side of the outer surface of the condenser chamber 19. A coil 10 is fixedly connected to one end of the water tank 9. The coil 10 extends into the condenser chamber 19, which can reduce the temperature by up to 300℃. A water outlet 11 is fixedly connected to the other end of the coil 10. The water outlet 11 is fixedly installed on the other side of the outer surface of the condenser chamber 19. The secondary filter 20... An activated carbon layer 16 is installed at the bottom of the internal structure. The activated carbon layer 16 is resistant to high temperatures of 400-550℃. An alkaline water layer 15 is added above the activated carbon layer 16. A pH meter 17 is fixedly installed on the other side of the outer surface of the secondary filter 20, and the pH meter 17 extends into the alkaline water layer 15. A feed pipe 22 is opened on one side of the bottom of the return pipe 18. A collection box 21 is movably installed at the bottom of the feed pipe 22. The exhaust gas to be incinerated enters from the air inlet 2. Then, the preliminary exhaust gas after incineration enters the cyclone dust collector 4 from the first exhaust pipe 3. The return pipe 18 is fixedly connected to the bottom of the cyclone dust collector 4 and is fixedly connected to the other side of the outer surface of the incinerator body 1. Larger particles are returned to the incinerator body 1 for incineration through this secondary flow. A second exhaust pipe 5 is fixedly connected to the surface, and a primary filter 7 is fixedly connected to the other end of the second exhaust pipe 5. The exhaust gas undergoes preliminary filtration here. Subsequently, a metal filter screen 6 is installed inside the primary filter 7. The metal filter screen 6 has a mesh size of 1-3 microns, which can effectively intercept large particles. It is made of 304 / 316L stainless steel and there are six sets of screens. It is resistant to high temperatures of 800-1150℃. Multiple sets of screens can enhance the dust removal effect. A water tank 9 is fixedly connected to one side of the outer surface of the condenser chamber 19. A coil 10 is fixedly connected to one end of the water tank 9. The coil 10 extends into the condenser chamber 19, which can reduce the temperature of the condenser chamber 19 by up to 300℃. A water outlet 11 is fixedly connected to the other end of the coil 10. The water outlet 11 is fixedly installed on the other side of the outer surface of the condenser chamber 19.On the one hand, it can heat cold water, and on the other hand, it can greatly reduce the exhaust gas temperature. Then, a secondary filter 20 is fixedly connected to the other end of the fourth exhaust pipe 12 for secondary filtration. A feed port 13 is fixedly installed on the top of the secondary filter 20, where caustic soda and clean water are added. An exhaust port 14 is fixedly installed on one side of the outer surface of the secondary filter 20, through which the filtered and cleaned exhaust gas is discharged. An activated carbon layer 16 is set at the bottom of the secondary filter 20, which can further adsorb fine particles in the exhaust gas and perform solid-gas separation. The activated carbon layer 16 is heat-resistant to 400-550℃ and can withstand higher exhaust gas temperatures. An alkaline water layer 15 is added above the activated carbon layer 16 to neutralize the weakly acidic substances in the exhaust gas. A pH meter 17 is fixedly installed on the other side of the outer surface of the secondary filter 20 and extends into the alkaline water layer 15 to monitor the pH in the secondary filter 20 in real time and adjust it as needed. A discharge pipe 22 is opened on one side of the bottom of the return pipe 18, and a collection box 21 is movably installed at the bottom of the discharge pipe 22 to facilitate the collection of large particles.

[0021] Please see Figure 1 , Figure 4 and Figure 5 The inner wall of the secondary filter 20 is equipped with a processing mechanism for facilitating the replacement of the alkaline water layer 15 and the activated carbon layer 16. The processing mechanism includes a water replacement pipe 23 and a disassembly groove 27. The water replacement pipe 23 is installed on the outer wall of the secondary filter 20, with one end extending into the interior of the secondary filter 20. A solenoid valve 24 is installed on the inner wall of the water replacement pipe 23, and a connecting flange 25 is installed on the outer wall of the water replacement pipe 23. A limit block 26 is installed on the inner wall of the secondary filter 20. The disassembly groove 27 is located on the inner wall of the secondary filter 20. A hinge 28 is installed on the outer wall of the secondary filter 20, and a sealing door plate 29 is installed on the outer wall of the hinge 28. A locking screw groove 30 is located on the outer wall of the secondary filter 20, and a locking screw 31 is installed on the outer wall of the sealing door plate 29, with one end of the locking screw 31 extending into the locking screw groove 30. The existing activated carbon layer 16... After filtering the gas, the alkaline water layer 15 needs to be replaced periodically. Therefore, it is necessary to facilitate the replacement of both parts. First, when the alkaline water layer 15 needs to be extracted, it is connected to the external adsorption pipe via the connecting flange 25. Then, the solenoid valve 24 operates, allowing flow inside the water exchange pipe 23. The alkaline water layer 15 in the secondary filter 20 is then extracted through the water exchange pipe 23 for easy refilling with a new alkaline water layer 15. When the activated carbon layer 16 needs to be replaced, the locking screw 31 is removed from the locking screw groove 30. The hinge 28 opens the sealing door plate 29, leaving the disassembly groove 27 unsealed. The activated carbon layer 16 is then pulled out between the two sets of limiting blocks 26 for disassembly. Replacement simply requires placing the activated carbon layer 16 between the two sets of limiting blocks 26. Both the alkaline water layer 15 and the activated carbon layer 16 are replaced simultaneously.

[0022] Working principle: The exhaust gas to be incinerated enters through inlet 2. The initial exhaust gas after incineration then enters the cyclone dust collector 4 through the first exhaust pipe 3. A return pipe 18 is fixedly connected to the bottom of the cyclone dust collector 4 and to the outer surface of the incinerator body 1 on the other side. Larger particles are returned to the incinerator body 1 for secondary incineration through this connection. A second exhaust pipe 5 is fixedly connected to the outer surface of the cyclone dust collector 4 on the other side, and a primary filter 7 is fixedly connected to the other end of the second exhaust pipe 5. The exhaust gas undergoes initial filtration here. The primary filter 7 contains metal filter screens 6 with a mesh size of 1-3 microns, effectively intercepting large particles. The filter screens are made of 304 / 316L stainless steel and consist of six sets, with a high temperature resistance of 800-1150°C. At ℃, multiple sets of interceptors can enhance the dust removal effect. A water tank 9 is fixedly connected to one side of the outer surface of the condenser chamber 19. A coil 10 is fixedly connected to one end of the water tank 9, extending into the condenser chamber 19. The condenser chamber 19 can reduce the temperature to within 300℃. A water outlet 11 is fixedly connected to the other end of the coil 10. The water outlet 11 is fixedly installed on the other side of the outer surface of the condenser chamber 19. On the one hand, it can heat the cold water, and on the other hand, it can greatly reduce the exhaust gas temperature. Subsequently, a secondary filter 20 is fixedly connected to the other end of the fourth exhaust pipe 12 for secondary filtration. A feed port 13 is fixedly installed on the top of the secondary filter 20, where caustic soda flakes and clean water are added. An exhaust port 14 is fixedly installed on one side of the outer surface of the secondary filter 20. After filtration and cleaning, the exhaust gas... The gas is discharged through this system. The inner bottom layer of the secondary filter 20 contains an activated carbon layer 16, which further adsorbs fine particles in the exhaust gas, performing solid-gas separation. The activated carbon layer 16 is heat-resistant (400-550℃) and can withstand higher exhaust gas temperatures. An alkaline water layer 15 is added above the activated carbon layer 16 to neutralize the weakly acidic substances in the exhaust gas. A pH meter 17 is fixedly installed on the other outer surface of the secondary filter 20, extending into the alkaline water layer 15, to monitor the pH level in the secondary filter 20 in real time and adjust it as needed. A discharge pipe 22 is opened on one side of the bottom of the return pipe 18, and a collection box 21 is movably installed at the bottom of the discharge pipe 22 to facilitate the collection of large particles. The existing activated carbon layer 16 needs to be replaced periodically after filtering the gas. Similarly, the alkaline water layer 15 also needs to be easily replaceable. First, when the alkaline water layer 15 needs to be removed, it is connected to the external adsorption pipe via the connecting flange 25. Then, the solenoid valve 24 operates, allowing flow inside the water exchange pipe 23. The alkaline water layer 15 in the secondary filter 20 is then removed through the water exchange pipe 23 for easy replacement with a new alkaline water layer 15. When the activated carbon layer 16 needs to be replaced, the locking screw 31 is removed from the locking screw groove 30. The hinge 28 opens the sealing door plate 29, disabling the disassembly groove 27. The activated carbon layer 16 is then pulled out between the two sets of limiting blocks 26 for disassembly. Replacement simply requires placing the activated carbon layer 16 between the two sets of limiting blocks 26.Simultaneously, the alkaline water layer 15 and the activated carbon layer 16 are replaced at the same time.

[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A gas-solid separation device for a cathode material incinerator, characterized in that, Includes: the incinerator body (1), the primary filter (7) and the secondary filter (20); An air inlet (2) is fixedly installed on one side of the outer surface of the incinerator body (1). A first exhaust pipe (3) is fixedly connected to the top of the incinerator body (1). A cyclone dust collector (4) is fixedly connected to the other end of the first exhaust pipe (3). A return pipe (18) is fixedly connected to the bottom of the cyclone dust collector (4) and is fixedly connected to the other side of the outer surface of the incinerator body (1). A second exhaust pipe (5) is fixedly connected to the other side of the outer surface of the cyclone dust collector (4), and a primary filter is fixedly connected to the other end of the second exhaust pipe (5). The filter (7) has a third exhaust pipe (8) fixedly connected to the bottom outer surface of the primary filter (7) and a condenser (19) fixedly connected to the other end of the third exhaust pipe (8). A fourth exhaust pipe (12) is fixedly connected to one side outer surface of the condenser (19). A secondary filter (20) is fixedly connected to the other end of the fourth exhaust pipe (12). A feed port (13) is fixedly installed on the top of the secondary filter (20). An air outlet (14) is fixedly installed on one side outer surface of the secondary filter (20).

2. The gas-solid separation device for a cathode material incinerator according to claim 1, characterized in that: The primary filter (7) is equipped with a metal filter screen (6) with a mesh size of 1-3 micrometers, made of 304 / 316L stainless steel, and there are six sets of the metal filter screen (6).

3. The gas-solid separation device for a cathode material incinerator according to claim 1, characterized in that: A water tank (9) is fixedly connected to one side of the outer surface of the condensing chamber (19). A coil (10) is fixedly connected to one end of the water tank (9). The coil (10) extends to the condensing chamber (19). The condensing chamber (19) can reduce the temperature to within 300°C. A water outlet (11) is fixedly connected to the other end of the coil (10). The water outlet (11) is fixedly installed on the other side of the outer surface of the condensing chamber (19).

4. The gas-solid separation device for a positive electrode material incinerator according to claim 1, characterized in that: The inner bottom layer of the secondary filter (20) is provided with an activated carbon layer (16), which is resistant to high temperature of 400-550℃. An alkaline water layer (15) is added above the activated carbon layer (16). A pH meter (17) is fixedly installed on the outer surface of the other side of the secondary filter (20), and the pH meter (17) extends into the alkaline water layer (15).

5. The gas-solid separation device for a positive electrode material incinerator according to claim 1, characterized in that: A discharge pipe (22) is provided on one side of the bottom of the return pipe (18), and a collection box (21) is movably installed at the bottom of the discharge pipe (22).

6. The gas-solid separation device for a cathode material incinerator according to claim 4, characterized in that: The inner wall of the secondary filter (20) is provided with a processing mechanism, which is used to facilitate the replacement of the alkaline water layer (15) and the activated carbon layer (16). The processing mechanism includes a water replacement pipe (23) and a disassembly groove (27). The outer wall of the secondary filter (20) is equipped with a water replacement pipe (23), and one end of the water replacement pipe (23) extends into the interior of the secondary filter (20). The inner wall of the water replacement pipe (23) is equipped with a solenoid valve (24), and the outer wall of the water replacement pipe (23) is equipped with a connecting flange (25).

7. The gas-solid separation device for a cathode material incinerator according to claim 6, characterized in that: The inner wall of the secondary filter (20) is equipped with a limiting block (26), the inner wall of the secondary filter (20) is provided with a disassembly groove (27), the outer wall of the secondary filter (20) is equipped with a hinge (28), the outer wall of the hinge (28) is equipped with a sealing door plate (29), the outer wall of the secondary filter (20) is provided with a locking screw groove (30), the outer wall of the sealing door plate (29) is equipped with a locking screw (31), and one end of the locking screw (31) extends into the interior of the locking screw groove (30).

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