Gas-solid separation device

Abstract

The utility model belongs to the technical field of battery production and manufacturing, and particularly relates to a gas-solid separation device which comprises a gas-solid separation main body and a filter unit, a cavity is arranged in the gas-solid separation main body, a feed port is arranged at one end of the gas-solid separation main body, a gas outlet is arranged at the other end of the gas-solid separation main body, and the filter unit is arranged in the gas-solid separation main body. A cavity is formed in the gas-solid separation main body, the feeding port and the gas outlet are both communicated with the cavity, the filtering unit is detachably arranged in the cavity in the length direction of the gas-solid separation main body, an outlet of the filtering unit is communicated with the gas outlet, and the gas-solid separation main body is connected with a crushing unit through the feeding port. The gas-solid separation main body is connected with a negative pressure unit through the gas outlet, the bottom of the gas-solid separation main body is also provided with a solid collection unit, and the solid collection unit is communicated with the cavity; the gas-solid separation device is simple in structure, and the remodeling difficulty and the remodeling cost are relatively low according to the treatment requirements of different types of positive electrode materials.

Description

Technical Field

[0001] This utility model belongs to the technical field of battery material production and manufacturing, specifically relating to a gas-solid separation device. Background Technology

[0002] Lithium-ion batteries, as a new type of rechargeable battery, have advantages such as high energy density and power density, high operating voltage, light weight, small size, long cycle life, good safety, and environmental friendliness. They have broad application prospects in portable electrical appliances, power tools, large-scale energy storage, and electric transportation power supplies.

[0003] In battery manufacturing, cathode material pulverization is a crucial step in the cathode material processing. It positively impacts battery performance, lifespan, and energy density by altering the particle size distribution and morphology of the material.

[0004] In current laboratory technical practices, gas-solid separation devices commonly used for the separation and collection of pulverized cathode material particles are often designed with multi-stage or multi-layer structures. While this design improves separation efficiency and accuracy to some extent, the complexity of the device structure makes cleaning and maintenance extremely cumbersome when dealing with different types of cathode materials, resulting in high replacement costs and difficulty in replacement. Utility Model Content

[0005] The purpose of this utility model is to provide a gas-solid separation device to address the shortcomings of the existing technology. This device solves the technical problem that the cleaning and maintenance process becomes extremely cumbersome due to the complexity of the device structure when processing different types of cathode materials, resulting in high replacement costs and difficulty in replacement.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A gas-solid separation device includes a gas-solid separation body and a filtration unit. The gas-solid separation body has a cavity. One end of the gas-solid separation body is provided with a feed inlet, and the other end of the gas-solid separation body is provided with an air outlet. Both the feed inlet and the air outlet are connected to the cavity. The filtration unit is detachably disposed in the cavity along the length direction of the gas-solid separation body, and the outlet of the filtration unit is connected to the air outlet. The gas-solid separation body is connected to a pulverizing unit through the feed inlet, and the gas-solid separation body is connected to a negative pressure unit through the air outlet. A solid collection unit is also provided at the bottom of the gas-solid separation body, and the solid collection unit is connected to the cavity.

[0008] Preferably, a connector is connected between the other end of the gas-solid separation body and the negative pressure unit. The end of the connector connected to the gas-solid separation body is provided with a through hole, which corresponds to the position of the air outlet. One end of the filter unit is detachably installed on the connector, and the other end of the filter unit passes through the through hole and the air outlet in sequence and is disposed in the cavity.

[0009] Preferably, the connector includes a first flange and an interface pipe connected to the first flange. The through hole is provided on the first flange and is located at the connection between the first flange and the interface pipe. The other end of the gas-solid separation body is provided with a second flange. The first flange and the second flange are detachably connected. The interface pipe is connected to the negative pressure unit.

[0010] Preferably, the filter unit includes a filter cylinder, the open end of the filter cylinder is provided with a third flange, the third flange is arranged circumferentially along the open end of the filter cylinder, the third flange is detachably connected to the first flange, and the closed end of the filter cylinder passes through the through hole and the air outlet in sequence and is disposed in the cavity.

[0011] Preferably, a seal is provided between the third flange and the first flange.

[0012] Preferably, the filter unit further includes a fixing member disposed in the cavity, the fixing member having a bayonet, and the closed end of the filter cylinder passing through the through hole, the air outlet and the bayonet in sequence disposed in the cavity.

[0013] Preferably, the negative pressure unit includes a first connecting pipe and an induced draft fan, the induced draft fan being connected to the interface pipe through the first connecting pipe, and the pulverizing unit includes a second connecting pipe and a pulverizer, the pulverizer being connected to the feed inlet of the gas-solid separation body through the second connecting pipe.

[0014] Preferably, the solid collection unit includes a solid collection cabinet and a drawer disposed inside the solid collection cabinet. The solid collection cabinet is disposed at the bottom of the gas-solid separation body and communicates with the cavity.

[0015] Preferably, the solid collection unit further includes a flow guide, which is disposed inside the solid collection cabinet, located above the drawer, and the bottom of the flow guide is inclined toward the drawer.

[0016] Preferably, the gas-solid separation body has an opening at its top, and the gas-solid separation body is covered by a top cover at the opening.

[0017] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0018] This utility model discloses a gas-solid separation device. Through the combined use of a gas-solid separation body and a filter unit, the gas-solid separation body is connected to a crushing unit via an inlet and a negative pressure unit via an outlet. The filter unit is detachably installed within the cavity of the gas-solid separation body. During operation, the negative pressure unit draws positive electrode material particles from the crushing unit into the gas-solid separation body. A portion of the positive electrode material particles falls downwards under gravity into a solid collection unit located at the bottom of the gas-solid separation body, while the remaining particles are filtered and adhere to the filter unit. Gas is discharged through the filter unit and the outlet under the action of the negative pressure unit, thus effectively achieving the separation and collection of positive electrode material particles. Furthermore, the gas-solid separation device of this utility model has a simple structure and a detachable filter unit, effectively reducing subsequent cleaning difficulties and lowering the difficulty and cost of reconfiguration when dealing with different types of positive electrode materials.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the gas-solid separation device of this utility model.

[0022] Figure 2 This is a partial structural schematic diagram of the gas-solid separation device of this utility model.

[0023] Figure 3 This is a schematic diagram of the structure of the gas-solid separation body of this utility model.

[0024] Figure 4 This is a structural schematic diagram of the connector of this utility model.

[0025] Figure 5 This is a structural schematic diagram of the fastener of this utility model.

[0026] The reference numerals in the attached figures are explained as follows:

[0027] 100. Gas-solid separation device;

[0028] 10. Gas-solid separation body; 11. Cavity; 12. Feed inlet; 13. Air outlet; 14. Second flange; 15. Opening;

[0029] 20. Filter unit; 21. Filter cartridge; 211. Third flange; 22. Fastener; 221. Bayonet; 222. Locking block;

[0030] 30. Negative pressure unit; 31. First connecting pipe; 32. Exhaust fan;

[0031] 40. Crushing unit; 41. Second connecting pipe; 42. Crusher;

[0032] 50. Solid collection unit; 51. Solid collection cabinet; 52. Drawer; 53. Flow guide;

[0033] 60. Connecting component; 61. First flange; 611. Through hole; 62. Interface pipe;

[0034] 70. Top cover;

[0035] a. The length direction of the gas-solid separation body. Detailed Implementation

[0036] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0037] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be interpreted as indicating or implying relative importance.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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.

[0039] The following will be combined with the appendix Figures 1-5The technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0040] Please see Figures 1-5 The gas-solid separation device 100 of this utility model embodiment includes a gas-solid separation body 10 and a filter unit 20. The gas-solid separation body 10 has a cavity 11. One end of the gas-solid separation body 10 is provided with a feed inlet 12, and the other end of the gas-solid separation body 10 is provided with an air outlet 13. Both the feed inlet 12 and the air outlet 13 are connected to the cavity 11. The filter unit 20 is detachably disposed in the cavity 11 along the length direction a of the gas-solid separation body 10, and the outlet of the filter unit 20 is connected to the air outlet 13. The gas-solid separation body 10 is connected to a pulverizing unit 40 through the feed inlet 12. The gas-solid separation body 10 is connected to a negative pressure unit 30 through the air outlet 13. A solid collection unit 50 is also provided at the bottom of the gas-solid separation body 10, and the solid collection unit 50 is connected to the cavity 11.

[0041] Compared with the prior art, the gas-solid separation device 100 of this utility model uses a gas-solid separation body 10 and a filter unit 20 in cooperation. The gas-solid separation body 10 is connected to a crushing unit 40 through a feed inlet 12 and a negative pressure unit 30 through an air outlet 13. The filter unit 20 is detachably installed in the cavity 11 of the gas-solid separation body 10. During use, the negative pressure unit 30 draws positive electrode material particles from the crushing unit 40 into the gas-solid separation body 10. A portion of the positive electrode material particles falls downwards with gravity into the filter unit 20. In the solid collection unit 50 at the bottom of the gas-solid separation body 10, another part of the positive electrode material particles adheres to the filter unit 20 after being filtered by the filter unit 20. Under the action of the negative pressure unit 30, the gas is discharged through the filter unit 20 and the gas outlet 13, thereby effectively realizing the separation and collection of positive electrode material particles. At the same time, the gas-solid separation device 100 of this utility model has a simple structure and the filter unit 20 is detachable, which effectively reduces the difficulty of subsequent cleaning and makes the difficulty and cost of changing the model lower when dealing with different types of positive electrode materials.

[0042] Furthermore, the gas-solid separation device 100 of this embodiment has a simple structure, low manufacturing cost, and small footprint, making it suitable for processing various cathode materials. It can efficiently collect micropowder, effectively preventing cross-contamination between materials caused by micropowder residue when processing different types of cathode materials, thereby ensuring the accuracy of experimental data.

[0043] Please see Figures 1-2 In some embodiments, a connector 60 is connected between the other end of the gas-solid separation body 10 and the negative pressure unit 30. The end of the connector 60 connected to the gas-solid separation body 10 has a through hole 611, which corresponds to the position of the air outlet 13. One end of the filter unit 20 is detachably mounted on the connector 60, and the other end of the filter unit 20 passes through the through hole 611 and the air outlet 13 sequentially within the cavity 11. The connector 60 connects the gas-solid separation body 10 and the negative pressure unit 30, effectively assisting in their connection. Furthermore, the through hole 611 on the connector 60, corresponding to the position of the air outlet 13, ensures smooth gas discharge. One end of the filter unit 20 is detachably mounted on the connector 60, and the other end of the filter unit 20 passes through the through hole 611 and the air outlet 13 in sequence and is disposed in the cavity 11 to realize the installation and replacement of the filter unit 20.

[0044] Please see Figures 1-4 In some embodiments, the connector 60 includes a first flange 61 and an interface pipe 62 connected to the first flange 61. A through hole 611 is provided on the first flange 61, and the through hole 611 is located at the connection between the first flange 61 and the interface pipe 62. A second flange 14 is provided at the other end of the gas-solid separation body 10. The first flange 61 and the second flange 14 are detachably connected. The interface pipe 62 is connected to the negative pressure unit 30. Through the cooperative use of the first flange 61, the interface pipe 62, and the second flange 14, the connector 60 is detachably connected to the second flange 14 of the gas-solid separation body 10 via the first flange 61, effectively realizing the connection between the connector 60 and the gas-solid separation body 10, reducing the difficulty of installation and disassembly of the connector 60 and the gas-solid separation body 10, and facilitating the maintenance and replacement of the connector 60 and the gas-solid separation body 10. Furthermore, the connector 60 is connected to the negative pressure unit 30 via the interface pipe 62, effectively reducing the difficulty of connecting the connector 60 and the negative pressure unit 30.

[0045] Please see Figures 1-4In some embodiments, the filter unit 20 includes a filter cylinder 21. A third flange 211 is provided at the opening 15 end of the filter cylinder 21. The third flange 211 is circumferentially arranged along the opening 15 end of the filter cylinder 21 and is detachably connected to the first flange 61. The closed end of the filter cylinder 21 passes sequentially through the through hole 611 and the air outlet 13 within the cavity 11. By providing the filter cylinder 21, which is detachably connected to the first flange 61 of the connector 60 via the third flange 211, the installation and removal of the filter cylinder 21 are effectively realized, reducing the difficulty of installation and removal and facilitating maintenance and replacement of the filter cylinder 21.

[0046] Furthermore, a sealing element is provided between the third flange 211 and the first flange 61. By providing this sealing element, which is positioned between the third flange 211 and the first flange 61, leakage of positive electrode material particles from the connection between the filter unit 20 and the connector 60 is effectively prevented, ensuring the airtightness of the gas-solid separation device 100.

[0047] Understandably, the mesh size of the filter cartridge 21 can be selected based on the particle size of the cathode material particles to be filtered, in order to ensure the filtration effect. For example, for cathode material particles with larger particle sizes, a filter cartridge 21 with a smaller mesh size can be selected to facilitate particle passage and reduce the possibility of clogging; while for cathode material particles with smaller particle sizes, a filter cartridge 21 with a larger mesh size needs to be selected to ensure effective filtration.

[0048] Understandably, the first flange 61 and the second flange 14 can be connected by bolts, effectively achieving a detachable connection between the connector 60 and the gas-solid separation body 10. Similarly, the first flange 61 and the third flange 211 can be connected by bolts, effectively achieving a detachable connection between the connector 60 and the filter cartridge 21.

[0049] Please see Figures 1-2 , Figure 5 In some embodiments, the filter unit 20 further includes a fixing member 22 disposed within the cavity 11. The fixing member 22 is provided with a bayonet 221. The closed end of the filter cylinder 21 passes sequentially through the through hole 611, the air outlet 13, and the bayonet 221 within the cavity 11. The fixing member 22, with its bayonet 221 for the filter cylinder 21 to pass through, effectively allows the fixing member 22 to assist in the installation of the filter cylinder 21, supporting the other end of the filter cylinder 21 and ensuring the stability of the filter cylinder 21 within the cavity 11 of the gas-solid separation body 10.

[0050] Furthermore, a locking block 222 is provided on the fixing member 22. One end of the locking block 222, located within the bayonet 221, contacts the surface of the filter cartridge 21, and the surface of the locking block 222 in contact with the filter cartridge 21 is an arc-shaped surface. By setting the locking block 222, when the other end of the filter cartridge 21 passes through the bayonet 221 of the fixing member 22, the locking block 222 can support and limit the filter cartridge 21, improving the supporting effect of the fixing member 22 on the filter cartridge 21 and ensuring the stability of the filter cartridge 21 within the cavity 11 of the gas-solid separation body 10. In addition, by setting the arc-shaped surface, the locking block 222 contacts the surface of the filter cartridge 21 through the arc-shaped surface, making the contact between the locking block 222 and the filter cartridge 21 tighter, reducing the gap between them, and improving the supporting effect of the fixing member 22 on the filter cartridge 21.

[0051] Furthermore, there are multiple card blocks 222, which are spaced apart circumferentially along the opening 221.

[0052] Understandably, the locking block 222 is elastic, and when subjected to external force, it can undergo a certain elastic deformation, thereby enhancing the clamping force on the filter cartridge 21. This clamping force helps ensure the stability and reliability of the fixed component 22 during operation, preventing it from shifting or loosening.

[0053] Please see Figure 1 In some embodiments, the negative pressure unit 30 includes a first connecting pipe 31 and an induced draft fan 32, the induced draft fan 32 being connected to the interface pipe 62 via the first connecting pipe 31. Through the cooperative use of the first connecting pipe 31 and the induced draft fan 32, the induced draft fan 32 is connected to the interface pipe 62 of the connector 60 via the first connecting pipe 31, effectively realizing the connection between the negative pressure unit 30 and the gas-solid separation body 10, ensuring that the negative pressure unit 30 can effectively extract the gas-solid mixture, thereby improving the efficiency of gas-solid separation.

[0054] Please see Figure 1 In some embodiments, the pulverizing unit 40 includes a second connecting pipe 41 and a pulverizer 42. The pulverizer 42 is connected to the feed inlet 12 of the gas-solid separation body 10 via the second connecting pipe 41. Through the cooperative use of the second connecting pipe 41 and the pulverizer 42, the connection between the pulverizer 42 and the feed inlet 12 of the gas-solid separation body 10 is effectively achieved, ensuring that the pulverized cathode material particles can smoothly enter the gas-solid separation body 10 for separation processing.

[0055] Specifically, the pulverizer 42 can be a hammer mill 42, a ball mill, or other types of pulverizing equipment, selected according to the different characteristics of the cathode material and the required particle size.

[0056] Please see Figures 1-2 In some embodiments, the solid collection unit 50 includes a solid collection cabinet 51 and a drawer 52 disposed within the solid collection cabinet 51. The solid collection cabinet 51 is located at the bottom of the gas-solid separation body 10 and communicates with the cavity 11. Through the cooperative use of the solid collection cabinet 51 and the drawer 52, the solid collection cabinet 51, located at the bottom of the gas-solid separation body 10 and communicating with the cavity 11 of the gas-solid separation body 10, collects the cathode material particles after gas-solid separation through the drawer 52, effectively achieving the collection of cathode material particles. Furthermore, the drawer 52 effectively makes the collection of cathode material particles very direct and efficient. Operators only need to pull out the drawer 52 to easily collect and process the accumulated cathode material particles without complicated operations or additional tools.

[0057] Please see Figures 1-2 In some embodiments, the solid collection unit 50 further includes a guide member 53, which is disposed inside the solid collection cabinet 51, above the drawer 52, with its bottom inclined inwards towards the drawer 52. By configuring the guide member 53 within the solid collection cabinet 51, its bottom inclined towards the drawer 52, effectively assisting the drawer 52 in collecting the positive electrode material particles. This ensures that the particles fall into the drawer 52, and the design of the guide member 53 makes the particles fall into the drawer 52 more smoothly, reducing particle scattering and residue within the cabinet, ensuring the cleanliness and tidiness of the solid collection unit 50, thereby improving collection efficiency and ease of cleaning.

[0058] In some embodiments, an anti-stick coating is provided on the inner wall of the gas-solid separation body 10. By using the anti-stick coating, the anti-stick coating is applied to the inner wall of the gas-solid separation body 10, effectively preventing the positive electrode material particles from adhering to the inner wall of the gas-solid separation body 10 during the gas-solid separation process.

[0059] Please see Figures 1-2 In some embodiments, the gas-solid separation body 10 has an opening 15 at its top, and a top cover 70 is provided over the opening 15. By providing the opening 15 at the top of the gas-solid separation body 10, operators can clean the positive electrode material particles adhering to the filter cartridge 21 into the drawer 52 through the opening 15 during use, and it also facilitates the inspection and maintenance of the interior of the gas-solid separation body 10. Furthermore, the top cover 70, which covers the opening 15 of the gas-solid separation body 10, effectively prevents dust leakage that may occur during the gas-solid separation process.

[0060] Furthermore, in order to enable operators to visually observe the accumulation of positive electrode material particles in the solid collection cabinet 51, facilitate timely cleaning and maintenance, and ensure the stable operation of the entire gas-solid separation device 100, an observation window can be installed on the solid collection cabinet 51 or the top cover 70.

[0061] In some embodiments, the gas-solid separation body 10, filter cartridge 21, solid collection cabinet 51, drawer 52 and connector 60 are all made of non-metallic materials or have a metal lining and a non-metallic material.

[0062] Furthermore, non-metallic materials include one of the following: polytetrafluoroethylene, polycarbonate, polyamide, polyacetal, polypropylene, polyphenylene sulfide, polyaryl ester, unsaturated polyester, phenolic plastics, epoxy plastics, ultra-high molecular weight polyethylene, modified polyphenylene ether, and ceramics.

[0063] The non-metallic material of the metal lining is carbon steel or stainless steel covered or lined with plastic. The plastic is one of polytetrafluoroethylene, polycarbonate, polyamide, polyacetal, modified polyphenylene ether, polyester, phenolic plastic, epoxy plastic, and ultra-high molecular weight polyethylene. The lining thickness is 4mm to 30mm.

[0064] The working principle of this utility model is as follows:

[0065] The positive electrode material is crushed by the crusher 42 to form positive electrode material particles. Using the negative pressure of the blower 32, the positive electrode material particles are drawn from the crusher 42 to the second connecting pipe 41 and finally reach the cavity 11 of the gas-solid separation body 10. A portion of the positive electrode material particles fall downwards into the drawer 52 of the solid collection cabinet 51 due to gravity, while another portion of the positive electrode material particles adheres to the filter cartridge 21 after being filtered. The gas is discharged through the filter cartridge 21, the outlet 13, the connector 60 and the first connecting pipe 31 under the action of the blower 32.

[0066] Open the top cover 70 and tap the filter cartridge 21 to knock off the positive electrode material particles attached to the filter cartridge 21. The knocked-off positive electrode material particles slide into the drawer 52 through the guide 53. Collect the positive electrode material particles in the drawer 52 to obtain the solid product after gas-solid separation.

[0067] Specifically, by tapping the filter cartridge 21, the positive electrode material particles on the filter cartridge 21 can be effectively collected in the drawer 52.

[0068] 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 exemplary 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.

Claims

1. A gas-solid separation device, characterized in that: The system includes a gas-solid separation body (10) and a filter unit (20). The gas-solid separation body (10) has a cavity (11). One end of the gas-solid separation body (10) is provided with a feed inlet (12), and the other end of the gas-solid separation body (10) is provided with an air outlet (13). Both the feed inlet (12) and the air outlet (13) are connected to the cavity (11). The filter unit (20) is detachably mounted along the length direction (a) of the gas-solid separation body (10). The filter unit (20) is located inside the cavity (11), and its outlet is connected to the air outlet (13). The gas-solid separation body (10) is connected to a crushing unit (40) through the feed inlet (12). The gas-solid separation body (10) is connected to a negative pressure unit (30) through the air outlet (13). A solid collection unit (50) is also provided at the bottom of the gas-solid separation body (10), and the solid collection unit (50) is connected to the cavity (11).

2. The gas-solid separation device as described in claim 1, characterized in that: The other end of the gas-solid separation body (10) is connected to the negative pressure unit (30) by a connector (60). The end of the connector (60) connected to the gas-solid separation body (10) is provided with a through hole (611). The through hole (611) corresponds to the position of the air outlet (13). One end of the filter unit (20) is detachably installed on the connector (60). The other end of the filter unit (20) passes through the through hole (611) and the air outlet (13) in sequence and is disposed in the cavity (11).

3. The gas-solid separation device as described in claim 2, characterized in that: The connector (60) includes a first flange (61) and an interface pipe (62) connected to the first flange (61). The through hole (611) is provided on the first flange (61) and the through hole (611) is located at the connection between the first flange (61) and the interface pipe (62). The other end of the gas-solid separation body (10) is provided with a second flange (14). The first flange (61) and the second flange (14) are detachably connected. The interface pipe (62) is connected to the negative pressure unit (30).

4. The gas-solid separation device as described in claim 3, characterized in that: The filter unit (20) includes a filter cylinder (21). A third flange (211) is provided at the opening (15) end of the filter cylinder (21). The third flange (211) is arranged circumferentially along the opening (15) end of the filter cylinder (21). The third flange (211) is detachably connected to the first flange (61). The closed end of the filter cylinder (21) passes through the through hole (611) and the air outlet (13) in sequence and is located in the cavity (11).

5. The gas-solid separation device as described in claim 4, characterized in that: A seal is provided between the third flange (211) and the first flange (61).

6. The gas-solid separation device as described in claim 4, characterized in that: The filter unit (20) also includes a fixing member (22), which is disposed in the cavity (11). The fixing member (22) is provided with a bayonet (221). The closed end of the filter cylinder (21) passes through the through hole (611), the air outlet (13) and the bayonet (221) in sequence and is disposed in the cavity (11).

7. The gas-solid separation device as described in claim 3, characterized in that: The negative pressure unit (30) includes a first connecting pipe (31) and an induced draft fan (32). The induced draft fan (32) is connected to the interface pipe (62) through the first connecting pipe (31). The pulverizing unit (40) includes a second connecting pipe (41) and a pulverizer (42). The pulverizer (42) is connected to the feed inlet (12) of the gas-solid separation body (10) through the second connecting pipe (41).

8. The gas-solid separation device according to any one of claims 1 to 7, characterized in that: The solid collection unit (50) includes a solid collection cabinet (51) and a drawer (52) disposed in the solid collection cabinet (51). The solid collection cabinet (51) is disposed at the bottom of the gas-solid separation body (10) and is connected to the cavity (11).

9. The gas-solid separation device as described in claim 8, characterized in that: The solid collection unit (50) further includes a guide (53), which is disposed inside the solid collection cabinet (51). The guide (53) is located above the drawer (52), and the bottom of the guide (53) is inclined toward the drawer (52).

10. The gas-solid separation device according to any one of claims 1 to 7, characterized in that: The gas-solid separation body (10) has an opening (15) at its top, and the gas-solid separation body (10) is covered by a top cover (70) at the opening (15).

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