Gas-solid separation device

Abstract

The invention 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 filtering unit, a cavity is formed in the gas-solid separation main body, a feeding port is formed in one end of the gas-solid separation main body, and a gas outlet is formed in the other end of 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] The invention belongs to the technical field of battery material production and manufacturing, and specifically relates to a gas-solid separation device. Background Art

[0002] As a new type of secondary battery, lithium-ion battery has the advantages of high energy density and power density, high operating voltage, light weight, small size, long cycle life, good safety, and green environmental protection. It has broad application prospects in portable appliances, power tools, large-scale energy storage, electric transportation power supply, etc.

[0003] In battery manufacturing, cathode material crushing is an important step in the processing of cathode materials. It has a positive impact on battery performance, life and energy density by changing the particle size distribution and morphology of the material.

[0004] In current laboratory technical practice, the commonly used gas-solid separation device for the separation and collection of crushed positive electrode material particles is often designed as a multi-stage or multi-layer structure. Although this design improves the separation efficiency and accuracy to a certain extent, when it comes to the processing needs of different types of positive electrode materials, due to the complexity of the device structure, its cleaning and maintenance process becomes extremely cumbersome, resulting in high replacement costs and difficulty in replacement. Summary of the invention

[0005] The purpose of the present invention is to provide a gas-solid separation device to address the deficiencies in the prior art, thereby solving the technical problems in the prior art of processing different types of positive electrode materials, namely, that the cleaning and maintenance processes become extremely cumbersome due to the complexity of the device structure, resulting in high replacement costs and difficulty in replacement.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A gas-solid separation device comprises a gas-solid separation body and a filter unit, the gas-solid separation body having a cavity therein, a feed port being provided at one end of the gas-solid separation body, and an air outlet being provided at the other end of the gas-solid separation body, the feed port and the air outlet being both connected to the cavity, the filter unit being detachably arranged in the cavity along the length direction of the gas-solid separation body, and the outlet of the filter unit being connected to the air outlet, the gas-solid separation body being connected to a crushing unit via the feed port, the gas-solid separation body being connected to a negative pressure unit via the air outlet, and a solid collection unit being further provided at the bottom of the gas-solid separation body, the solid collection unit being connected to the cavity.

[0008] Preferably, a connecting piece is connected between the other end of the gas-solid separation body and the negative pressure unit, and a through hole is provided at one end of the connecting piece connected to the gas-solid separation body, and the through hole corresponds to the position of the air outlet. One end of the filter unit is detachably mounted on the connecting piece, and the other end of the filter unit passes through the through hole and the air outlet in sequence and is arranged in the cavity.

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

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

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

[0012] Preferably, the filter unit further comprises a fixing member, the fixing member is arranged in the cavity, a bayonet is arranged on the fixing member, and the closed end of the filter cartridge passes through the through hole, the air outlet and the bayonet in sequence and is arranged in the cavity.

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

[0014] Preferably, the solid collecting unit comprises a solid collecting cabinet and a drawer arranged in the solid collecting cabinet, the solid collecting cabinet is arranged at the bottom of the gas-solid separation body, and the solid collecting cabinet is communicated with the cavity.

[0015] Preferably, the solid collection unit further comprises a guide member, wherein the guide member is disposed in the solid collection cabinet, the guide member is located above the drawer, and the bottom of the guide member is inclined toward the inside of the drawer.

[0016] Preferably, an opening is provided at the top of the gas-solid separation body, and a top cover is provided on the gas-solid separation body located above the opening.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The gas-solid separation device of the present invention cooperates with the use of a gas-solid separation body and a filter unit. The gas-solid separation body is connected to the crushing unit through a feed port, and the gas-solid separation body is connected to the negative pressure unit through an air outlet. The filter unit is detachably installed in the cavity of the gas-solid separation body. During use, the negative pressure unit is used to extract positive electrode material particles from the crushing unit into the gas-solid separation body, and a part of the positive electrode material particles falls downward into the solid collection unit arranged at the bottom of the gas-solid separation body due to gravity, and another part of the positive electrode material particles is filtered by the filter unit and attached to the filter unit. The gas is discharged through the filter unit and the air outlet under the action of the negative pressure unit, thereby effectively realizing the separation and collection of the positive electrode material particles. At the same time, the gas-solid separation device of the present invention has a simple structure, and the filter unit is detachable, which effectively reduces the difficulty of subsequent cleaning, so that when dealing with different types of positive electrode materials, the difficulty and cost of changing the model are low.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 It is a schematic structural diagram of the gas-solid separation device of the present invention.

[0022] Figure 2 It is a schematic diagram of the partial structure of the gas-solid separation device of the present invention.

[0023] Figure 3 It is a schematic structural diagram of the gas-solid separation body of the present invention.

[0024] Figure 4 It is a schematic structural diagram of the connecting piece of the present invention.

[0025] Figure 5 It is a schematic structural diagram of the fixing member of the present invention.

[0026] The reference numerals are described as follows:

[0027] 100. Gas-solid separation device;

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

[0029] 20. Filter unit; 21. Filter cartridge; 211. Third flange; 22. Fixing member; 221. Bayonet; 222. Block;

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

[0031] 40. pulverizing unit; 41. second connecting pipe; 42. pulverizer;

[0032] 50. solid collection unit; 51. solid collection cabinet; 52. drawer; 53. flow guide;

[0033] 60. Connecting piece; 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 DESCRIPTION

[0036] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0037] Furthermore, the terms “first”, “second”, etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance.

[0038] In the invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0039] The following will be combined with the attached Figures 1 to 5The technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] See also Figures 1 to 5 The gas-solid separation device 100 of the embodiment of the present invention includes a gas-solid separation body 10 and a filter unit 20, the gas-solid separation body 10 has a cavity 11 therein, a feed port 12 is provided at one end of the gas-solid separation body 10, and an air outlet 13 is provided at the other end of the gas-solid separation body 10, the feed port 12 and the air outlet 13 are both connected to the cavity 11, the filter unit 20 is detachably arranged 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 crushing unit 40 through the feed port 12, the gas-solid separation body 10 is connected to a negative pressure unit 30 through the air outlet 13, and 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 the embodiment of the present invention is used in conjunction with the gas-solid separation body 10 and the filter unit 20. The gas-solid separation body 10 is connected to the crushing unit 40 through the feed port 12, and the gas-solid separation body 10 is connected to the negative pressure unit 30 through the gas 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 is used to extract the positive electrode material particles from the crushing unit 40 into the gas-solid separation body 10, and a part of the positive electrode material particles falls downward into the gas-solid separation body 10 with gravity. In the solid collection unit 50 at the bottom of the gas-solid separation body 10, another part of the positive electrode material particles are filtered by the filter unit 20 and attached to the filter unit 20, and the gas is discharged through the filter unit 20 and the outlet 13 under the action of the negative pressure unit 30, thereby effectively realizing the separation and collection of the positive electrode material particles. At the same time, the gas-solid separation device 100 of the present invention has a simple structure, and the filter unit 20 is detachable, which effectively reduces the subsequent cleaning difficulty, so that when the processing requirements of different types of positive electrode materials are met, the difficulty and cost of changing the model are relatively low.

[0042] In addition, the gas-solid separation device 100 of the embodiment of the present invention has a simple structure, low manufacturing cost, and small space occupation, and is suitable for processing a variety of positive electrode materials. It can efficiently collect micropowders and effectively prevent cross-contamination between materials caused by residual micropowders when processing different types of positive electrode materials, thereby ensuring the accuracy of experimental data.

[0043] See also 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, and a through hole 611 is provided at one end of the connector 60 connected to the gas-solid separation body 10, and the through hole 611 corresponds to the position of the gas 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 gas outlet 13 in sequence and is arranged in the cavity 11. Through the setting of the connector 60, the connector 60 is used to connect the gas-solid separation body 10 and the negative pressure unit 30, effectively assisting the connection between the gas-solid separation body 10 and the negative pressure unit 30. In addition, a through hole 611 is provided on the connector 60, and the through hole 611 corresponds to the position of the gas outlet 13 to ensure 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 , so as to realize the installation and replacement of the filter unit 20 .

[0044] See also Figures 1 to 4 In some embodiments, 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, and the interface pipe 62 is connected to the negative pressure unit 30. Through the coordinated 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 through 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. In addition, the connector 60 is connected to the negative pressure unit 30 through the interface pipe 62, effectively reducing the difficulty of connection between the connector 60 and the negative pressure unit 30.

[0045] See also Figures 1 to 4In some embodiments, the filter unit 20 includes a filter cartridge 21, and the opening 15 end of the filter cartridge 21 is provided with a third flange 211, and the third flange 211 is arranged circumferentially along the opening 15 end of the filter cartridge 21, and the third flange 211 is detachably connected to the first flange 61, and the closed end of the filter cartridge 21 passes through the through hole 611 and the air outlet 13 in sequence and is arranged in the cavity 11. Through the arrangement of the filter cartridge 21, the filter cartridge 21 is detachably connected to the first flange 61 of the connector 60 through the third flange 211, which effectively realizes the installation and removal of the filter cartridge 21, reduces the difficulty of installation and removal of the filter cartridge 21, and facilitates the maintenance and replacement of the filter cartridge 21.

[0046] Furthermore, a seal is provided between the third flange 211 and the first flange 61. By providing the seal 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 avoided, thereby ensuring the airtightness of the gas-solid separation device 100.

[0047] It is understandable that the mesh number of the filter cartridge 21 can be selected according to the particle size of the positive electrode material particles to be filtered to ensure the filtering effect. For example, for positive electrode material particles with larger particle sizes, a filter cartridge 21 with a smaller mesh number can be selected to facilitate the passage of particles and reduce the possibility of clogging; while for positive electrode material particles with smaller particle sizes, a filter cartridge 21 with a larger mesh number needs to be selected to ensure effective filtration.

[0048] It is understandable that the first flange 61 and the second flange 14 can be connected by bolts, which effectively realizes the detachable connection between the connecting member 60 and the gas-solid separation body 10. Of course, the first flange 61 and the third flange 211 can be connected by bolts, which effectively realizes the detachable connection between the connecting member 60 and the filter cartridge 21.

[0049] See also Figures 1-2 , Figure 5 In some embodiments, the filter unit 20 further includes a fixing member 22, which is disposed in the cavity 11. A bayonet 221 is disposed on the fixing member 22, and the closed end of the filter cartridge 21 passes through the through hole 611, the gas outlet 13 and the bayonet 221 in sequence and is disposed in the cavity 11. By disposing the fixing member 22, the fixing member 22 is provided with a bayonet 221 for the filter cartridge 21 to pass through, so that the fixing member 22 can effectively assist the installation of the filter cartridge 21 through the bayonet 221, realize the support of the other end of the filter cartridge 21, and ensure the stability of the filter cartridge 21 in the cavity 11 of the gas-solid separation body 10.

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

[0051] Furthermore, there are a plurality of clamping blocks 222 , and the plurality of clamping blocks 222 are arranged at intervals along the circumference of the clamping port 221 .

[0052] It is understandable that the block 222 may be elastic, and when the block 222 is subjected to external force, it can produce a certain elastic deformation, thereby enhancing the clamping force on the filter cartridge 21. This clamping force helps to ensure the stability and reliability of the fixed member 22 during operation, and prevents it from displacement or loosening.

[0053] See also Figure 1 In some embodiments, the negative pressure unit 30 includes a first connecting pipe 31 and an induced draft fan 32, and the induced draft fan 32 is connected to the interface pipe 62 through the first connecting pipe 31. Through the coordinated 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 connecting member 60 through 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] See also Figure 1 In some embodiments, the pulverizing unit 40 includes a second connecting pipe 41 and a pulverizer 42, and the pulverizer 42 is connected to the feed port 12 of the gas-solid separation body 10 through the second connecting pipe 41. By using the second connecting pipe 41 and the pulverizer 42 in coordination, the pulverizer 42 is connected to the feed port 12 of the gas-solid separation body 10 through the second connecting pipe 41, effectively realizing the connection between the pulverizing unit 40 and the gas-solid separation body 10, ensuring that the pulverized positive electrode material particles can smoothly enter the gas-solid separation body 10 for separation processing.

[0055] Specifically, the pulverizer 42 may be a hammer mill 42, a ball mill or other types of pulverizing equipment, which may be selected according to different positive electrode material properties and the required pulverized particle size requirements.

[0056] See also Figures 1-2 In some embodiments, 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 the solid collection cabinet 51 is communicated with the cavity 11. By using the solid collection cabinet 51 and the drawer 52 in coordination, the solid collection cabinet 51 is disposed at the bottom of the gas-solid separation body 10 and is communicated with the cavity 11 of the gas-solid separation body 10. The solid collection cabinet 51 collects the positive electrode material particles after gas-solid separation through the drawer 52, thereby effectively realizing the collection of the positive electrode material particles. In addition, by setting the drawer 52, the collection of the positive electrode material particles becomes very direct and efficient. The operator only needs to pull out the drawer 52 to easily collect and process the accumulated positive electrode material particles without complicated operations or additional tools.

[0057] See also Figures 1-2 In some embodiments, the solid collection unit 50 further includes a guide 53, which is disposed in the solid collection cabinet 51, and is located above the drawer 52, and the bottom of the guide 53 is inclined toward the drawer 52. By setting the guide 53, the guide 53 is disposed in the solid collection cabinet 51, and its bottom is inclined toward the drawer 52, which effectively assists the drawer 52 in collecting the positive electrode material particles, ensuring that the positive electrode material particles can fall into the drawer 52. The design of the guide 53 makes the positive electrode material particles fall into the drawer 52 more smoothly, reduces the scattering and residue of particles in the cabinet, ensures the cleanliness and tidiness of the solid collection unit 50, and thus improves the collection efficiency and the convenience 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 coated on 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] See also Figures 1-2 In some embodiments, an opening 15 is provided at the top of the gas-solid separation body 10, and a top cover 70 is provided on the opening 15 of the gas-solid separation body 10. By providing the opening 15 at the top of the gas-solid separation body 10, during use, the operator can clean the positive electrode material particles attached to the filter cartridge 21 into the drawer 52 through the opening 15, and it is convenient for the operator to inspect and maintain the inside of the gas-solid separation body 10. In addition, by providing the top cover 70, the top cover 70 is provided on the opening 15 of the gas-solid separation body 10, which effectively prevents the dust that may be generated during the gas-solid separation process from overflowing.

[0060] Furthermore, in order to enable the operator 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 set on the solid collection cabinet 51 or the top cover 70.

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

[0062] Furthermore, the non-metallic material includes one of polytetrafluoroethylene, polycarbonate, polyamide, polyacetal, polypropylene, polyphenylene sulfide, polyarylate, unsaturated polyester, phenolic plastic, epoxy plastic, ultra-high molecular polyethylene, modified polyphenylene ether, and ceramic.

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

[0064] The working principle of the present invention is as follows:

[0065] The positive electrode material is crushed by the crusher 42 to form positive electrode material particles. The positive electrode material particles are extracted from the crusher 42 to the second connecting pipe 41 by the negative pressure of the induced draft fan 32, and finally reach the cavity 11 of the gas-solid separation body 10. A part of the positive electrode material particles falls downward into the drawer 52 of the solid collection cabinet 51 due to gravity, and another part of the positive electrode material particles is filtered by the filter cartridge 21 and adheres to the filter cartridge 21. The gas is discharged through the filter cartridge 21, the air outlet 13, the connecting piece 60 and the first connecting pipe 31 under the action of the induced draft fan 32.

[0066] Open the top cover 70, knock the filter cartridge 21, and 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 member 53, and the positive electrode material particles in the drawer 52 are collected to obtain a solid finished product after gas-solid separation.

[0067] Specifically, by knocking 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 the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A gas-solid separation device, characterized in that: The invention comprises a gas-solid separation body (10) and a filter unit (20), wherein the gas-solid separation body (10) has a cavity (11) therein, 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), the feed inlet (12) and the air outlet (13) are both connected to the cavity (11), and the filter unit (20) is detachably mounted along the length direction (a) of the gas-solid separation body (10). The gas-solid separation body (10) is arranged in the cavity (11), and the outlet of the filtering unit (20) is connected to the air outlet (13); the gas-solid separation body (10) is connected to the crushing unit (40) through the feed port (12); the gas-solid separation body (10) is connected to the negative pressure unit (30) through the air outlet (13); and a solid collection unit (50) is also arranged at the bottom of the gas-solid separation body (10); the solid collection unit (50) is connected to the cavity (11).

2. The gas-solid separation device according to claim 1, characterized in that: A connecting piece (60) is connected between the other end of the gas-solid separation body (10) and the negative pressure unit (30); a through hole (611) is provided at one end of the connecting piece (60) connected to the gas-solid separation body (10); the through hole (611) corresponds to the position of the air outlet (13); one end of the filter unit (20) is detachably mounted on the connecting piece (60); the other end of the filter unit (20) passes through the through hole (611) and the air outlet (13) in sequence and is arranged in the cavity (11).

3. The gas-solid separation device according to claim 2, characterized in that: The connecting member (60) includes a first flange (61) and an interface pipe (62) connected to the first flange (61); the through hole (611) is arranged 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 arranged at the other end of the gas-solid separation body (10); the first flange (61) and the second flange (14) are detachably connected; and the interface pipe (62) is connected to the negative pressure unit (30).

4. The gas-solid separation device according to claim 3, characterized in that: The filter unit (20) comprises a filter cartridge (21), the opening (15) end of the filter cartridge (21) being provided with a third flange (211), the third flange (211) being circumferentially arranged along the opening (15) end of the filter cartridge (21), the third flange (211) being detachably connected to the first flange (61), and the closed end of the filter cartridge (21) passing through the through hole (611) and the air outlet (13) in sequence and being arranged in the cavity (11).

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

6. The gas-solid separation device according to claim 4, characterized in that: The filter unit (20) further comprises a fixing member (22), the fixing member (22) being arranged in the cavity (11), the fixing member (22) being provided with a bayonet (221), and the closed end of the filter cartridge (21) sequentially passes through the through hole (611), the air outlet (13) and the bayonet (221) to be arranged in the cavity (11).

7. The gas-solid separation device according to claim 3, characterized in that: The negative pressure unit (30) comprises a first connecting pipe (31) and an induced draft fan (32), wherein the induced draft fan (32) is connected to the interface pipe (62) via the first connecting pipe (31), and the pulverizing unit (40) comprises a second connecting pipe (41) and a pulverizer (42), wherein the pulverizer (42) is connected to the feed port (12) of the gas-solid separation body (10) via 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) comprises a solid collection cabinet (51) and a drawer (52) arranged in the solid collection cabinet (51); the solid collection cabinet (51) is arranged at the bottom of the gas-solid separation body (10); and the solid collection cabinet (51) is connected to the cavity (11).

9. The gas-solid separation device according to claim 8, characterized in that: The solid collection unit (50) further comprises a flow guide (53), wherein the flow guide (53) is arranged in the solid collection cabinet (51), the flow guide (53) is located above the drawer (52), and the bottom of the flow guide (53) is inclined toward the inside of the drawer (52).

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

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