Solid-gas separation device for graphite negative electrode material production

Abstract

The invention belongs to the technical field of waste gas treatment, and particularly discloses a solid-gas separation device for graphite cathode material production, the solid-gas separation device comprises a waste gas tank and a gas inlet tank, the gas inlet tank is mounted at the lower part in the waste gas tank in a communicating manner, and supporting legs are mounted outside the gas inlet tank at equal intervals in the circumferential direction; the top of the waste gas tank communicates with an air suction fan flange pipe, one side of the interior of the air inlet tank communicates with an air inlet pipe, an electrostatic adsorption mechanism is arranged in the air inlet tank, a sealing shell is fixedly installed on the lower portion of the interior of the waste gas tank, and a solid separation filter cover is rotatably installed in the sealing shell; a plugging plate is fixedly installed at the position, close to the upper portion of the solid separation filter cover, in the waste gas tank, and the plugging plate communicates with a conical shell through a filter pipe in the middle of the interior of the plugging plate, efficient, continuous and stable separation of solid-gas pollutants in waste gas generated in graphite negative electrode material production is achieved, and the device is particularly suitable for industrial waste gas treatment scenes with high dust and high VOCs.

Description

Technical Field

[0001] This invention belongs to the field of waste gas treatment technology, and specifically discloses a solid-gas separation device for the production of graphite anode materials. Background Technology

[0002] With the rapid development of the new energy industry, the demand and performance requirements for graphite anode materials for lithium-ion batteries are increasing. During their production, especially in key stages such as high-temperature graphitization, crushing, sieving, and coating modification, a large amount of complex waste gas is generated. This waste gas is not a single pollutant, but a typical gas-solid mixed system, mainly containing: 1) ultrafine graphite dust with a wide particle size distribution (from submicron to tens of microns), which is lightweight and easily dispersed; and 2) volatile organic compounds (VOCs) and other gaseous harmful substances produced by the pyrolysis of organic binders or coating materials. Improper handling will not only result in the loss of high-value materials but also seriously pollute the environment and affect safe production.

[0003] Currently, conventional treatment of such waste gas in the industry often employs simple discharge after baghouse dust collection, or a series treatment process of dust collection + adsorption. However, under the harsh conditions of continuous, large-scale production of graphite anode materials, existing devices have revealed the following systemic technical defects, resulting in low overall purification efficiency, unstable operation, and a mismatch between static adsorption mode and dynamic pollution load, leading to uneven adsorption and premature penetration: Existing devices mostly use packed fixed adsorption beds (such as activated carbon adsorption boxes). The adsorption material is in a relatively static state, and the waste gas passes through a fixed path. Under the high dust load of continuous production, the adsorption material in the front airflow path will quickly become saturated and caking due to dust coverage, forming "adsorption dead zones" and airflow channels, while the material at the back end is not fully utilized. This "short-circuit" and "channeling" effect makes it impossible for the overall adsorption capacity of the adsorption material to be uniformly exerted, significantly reducing the effective adsorption capacity, and making it easy for gaseous pollutants to "penetrate" prematurely, resulting in periodic exceedances of the outlet concentration. Secondly, replacing the adsorption material is also time-consuming and labor-intensive, which cannot meet the current needs of waste gas treatment. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the background art, and to propose a solid-gas separation device for the production of graphite anode materials, comprising an exhaust gas tank and an inlet gas tank. The inlet gas tank is connected and installed inside the lower part of the exhaust gas tank, and support legs are installed at equal intervals along the circumference of the outside of the inlet gas tank. An intake fan flange pipe is connected and installed on the top of the exhaust gas tank. An inlet pipe is connected and installed on one side inside the inlet gas tank. An electrostatic adsorption mechanism is provided inside the inlet gas tank. A sealing shell is fixedly installed inside the lower part of the exhaust gas tank. A solid separation filter is rotatably installed inside the sealing shell. The solid separation filter is located inside the exhaust gas tank and close to the solid separation filter. A sealing plate is fixedly installed on the top of the cover. The sealing plate is connected to a conical shell through a filter tube in the middle of the interior. A filter chamber is fixedly installed inside the upper part of the conical shell, and multiple filter holes are opened on the inner surface of the filter chamber. A ash discharge pipe is connected to the bottom of the air inlet tank. A feeding pipe is rotatably arranged in the middle of the exhaust gas tank and the air inlet tank. The feeding pipe passes through the solid separation filter cover, filter tube and filter chamber in sequence from below. A connecting pipe is connected to one side of the feeding pipe and below the ash discharge pipe. A driving component is provided at the upper end of the feeding pipe. A diversion mechanism is provided outside the feeding pipe and near the inside of the filter chamber.

[0005] In the above technical solution, the electrostatic adsorption mechanism further includes an electrostatic adsorption device, which is fixedly installed inside the air inlet tank.

[0006] In the above technical solution, the driving component further includes a maintenance box, which is fixedly installed inside the waste gas tank on one side. A motor is fixedly installed inside the maintenance box, and a drive gear is fixedly sleeved on the outside of the motor output shaft. A fixed seat is fixedly installed on the side of the maintenance box near the inside of the waste gas tank. A connecting shaft is rotatably installed inside the fixed seat. A gear is fixedly sleeved on the upper outside of the connecting shaft. The gear meshes with the drive gear. A connecting plate is fixedly installed at the bottom of the connecting shaft. Connecting rods are symmetrically installed at the bottom of the connecting plate, and the bottom ends of the two connecting rods are connected to the top of the discharge plate.

[0007] In the above technical solution, the diversion mechanism further includes a connecting sleeve fixedly sleeved outside the feed pipe and close to the lower inner side of the filter chamber. The connecting sleeve is symmetrically equipped with baffles. The bottom of the baffles slides against the bottom of the filter chamber. The outer surface of the baffles is provided with diverting components. A discharge pipe is connected to one side of the bottom of the filter chamber. One end of the discharge pipe extends to the outside of the waste gas tank.

[0008] In the above technical solution, the distributor further includes multiple sets of swirling guide vanes, one side of which is fixedly connected to the outer surface of the turbulence deflector, and all sets of swirling guide vanes are arranged in an arc shape.

[0009] In the above technical solution, further, guide rods are installed at equal intervals along the circumferential direction on the outer surface of the discharge plate, and blades are fixedly installed at the ends of the guide rods.

[0010] In the above technical solution, a pressure sensor is further provided at the bottom of the solid separation filter cover, the pressure sensor is rotatably engaged with the feeding pipe, a filter cake cleaning component is provided on one side inside the air inlet tank, the solid separation filter cover is fixedly connected to the feeding pipe, and a material injection pipe is installed in the lower part of the feeding pipe.

[0011] In the above technical solution, the filter cake cleaning component further includes a sealed box fixedly embedded inside one side of the air inlet tank. A cylinder is sealed and embedded in the upper part of the sealed box. A sliding plate is fixedly installed on the telescopic end of the cylinder. A scraper is fixedly installed on the end of the sliding plate away from the cylinder. Two arc-shaped sealing valve plates are movably clamped inside the lower part of the ash discharge pipe. The two arc-shaped sealing valve plates are provided with a sliding groove adapted to the sliding of the feed pipe on the side that is close to each other.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention utilizes the synergistic effect of an electrostatic adsorption mechanism and filter tubes to separate and purify gaseous and solid pollutants, such as ultrafine graphite dust and volatile organic compounds, contained in the waste gas from the production of graphite anode materials. The electrostatic adsorption device can accurately capture submicron-sized ultrafine dust. The multi-stage filter structure, consisting of a solid separation filter cover, filter chamber, and filter pores, can further trap solid particles of different sizes, avoiding the loss of high-value graphite materials, while significantly reducing the dust content in the waste gas, thus solving the problem of incomplete dust removal in conventional treatment.

[0013] 2. This invention achieves an organic combination of dynamic separation and static adsorption. Through a rotatable feeding pipe and a flow-dividing mechanism linked to it, rotating baffles and swirl guides are used to actively guide and diffuse the adsorption material inside the filter chamber, causing the waste gas to form a swirling flow and disturbance within the filter chamber. This promotes the uniform adsorption of the treated waste gas by the adsorption material, breaking the airflow short-circuiting and channeling phenomena in traditional fixed-bed adsorption. This allows the adsorption material to be used uniformly, significantly improving the adsorption capacity and treatment stability, and preventing premature penetration of pollutants.

[0014] 3. This invention features an automatic dust removal structure that links the filter cake cleaning mechanism with a pressure sensor. This structure can automatically trigger a scraping action when a filter cake forms on the surface of the solid separation filter cover, effectively preventing filter material blockage and caking, keeping the filtration channel unobstructed, extending the service life of the adsorption material, and reducing maintenance frequency and operating costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention from another angle; Figure 3 This is a schematic diagram of the internal connection structure between the air inlet tank and the exhaust tank of the present invention; Figure 4 This is a schematic diagram of the internal connection structure between the conical shell and the maintenance box of the present invention; Figure 5 This is a schematic diagram of the connection structure between the conical shell and the filter chamber of the present invention; Figure 6 This is a schematic diagram of the connection structure of the diversion mechanism of the present invention; Figure 7 This is the connection structure between the feeding tube and the connecting shaft of the present invention; Figure 8 This is a schematic diagram of the connection structure between the pressure sensor and the solid separation filter cover of the present invention; Figure 9 This is another schematic diagram of the connection structure between the pressure sensor and the solid separation filter cover of the present invention.

[0016] In the diagram: 1. Waste gas tank; 2. Support leg; 3. Ash discharge pipe; 4. Suction fan flange pipe; 5. Maintenance box; 6. Air inlet pipe; 7. Waste discharge pipe; 8. Sealing box; 9. Feeding pipe; 10. Air inlet tank; 11. Arc-shaped sealing valve plate; 12. Sealing plate; 13. Conical shell; 14. Electrostatic adsorption device; 15. Slide plate; 16. Connecting plate; 17. Connecting rod; 18. Scraper; 19. Solid separation filter cover; 20. Fixed base; 21. Gear; 22. Filter tube; 23. Filter chamber; 24. Drive gear; 25. Motor; 26. Baffle plate; 27. Filter hole; 28. Blade; 29. ​​Discharge plate; 30. Connecting sleeve; 31. Swirl guide plate; 32. Connecting shaft; 33. Injection pipe; 34. Cylinder; 35. Pressure sensor; 37. Connecting pipe. Detailed Implementation

[0017] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0019] like Figures 1-9The solid-gas separation device for graphite anode material production shown includes an exhaust gas tank 1 and an inlet gas tank 10. The inlet gas tank 10 is installed inside the lower part of the exhaust gas tank 1, and support legs 2 are installed at equal intervals along the circumference of the outside of the inlet gas tank 10. An intake fan flange pipe 4 is installed on the top of the exhaust gas tank 1. An inlet pipe 6 is installed on one side inside the inlet gas tank 10. An electrostatic adsorption mechanism is provided inside the inlet gas tank 10. A sealing shell is fixedly installed inside the lower part of the exhaust gas tank 1. A solid separation filter 19 is rotatably installed inside the sealing shell. A sealing plate 12 is fixedly installed inside the exhaust gas tank 1 and above it, close to the solid separation filter 19. 12 is connected to a conical shell 13 through the filter tube 22 in the middle of the interior. A filter chamber 23 is fixedly installed inside the upper part of the conical shell 13, and multiple filter holes 27 are opened on the inner surface of the filter chamber 23. A ash discharge pipe 3 is connected to the bottom of the air inlet tank 10. A feeding pipe 9 is rotatably arranged in the middle of the exhaust gas tank 1 and the air inlet tank 10. The feeding pipe 9 passes through the solid separation filter cover 19, the filter tube 22 and the filter chamber 23 from below. A connecting pipe 37 is connected to one side of the feeding pipe 9 and near the lower part of the ash discharge pipe 3. A driving component is provided at the upper end of the feeding pipe 9. A diversion mechanism is provided outside the feeding pipe 9 and near the inner side of the filter chamber 23. In this embodiment, the external suction fan is activated, and a negative pressure is formed inside the waste gas tank 1 and the intake tank 10 through the suction fan flange pipe 4. The waste gas (containing ultrafine graphite dust and VOCs) generated during the production of graphite negative electrode materials is drawn into the intake tank 10 through the intake pipe 6. Under the action of negative pressure, the waste gas flows upward and first passes through the electrostatic adsorption mechanism to adsorb ultrafine particles. Then it passes through the solid separation filter cover 19 to intercept large particles. The gas passing through the solid separation filter cover 19 continues to rise and enters the conical shell 13 through the filter pipe 22. The conical shell 13 gathers the airflow and evenly guides it into the filter chamber 23. When the gas permeates through the filter holes 27, VOCs are adsorbed by the adsorption material (activated carbon particles). The driving component drives the feeding pipe 9 to rotate. The feeding pipe 9 drives the diversion mechanism to disturb the airflow and adsorption material in the filter chamber 23, thereby improving the adsorption and filtration efficiency. The separated solid particles fall to the bottom of the intake tank 10 under the action of gravity and are discharged through the ash discharge pipe 3. The purified gas is discharged from the device through the suction fan flange pipe 4.

[0020] The electrostatic adsorption mechanism includes an electrostatic adsorption device 14, which is fixedly installed inside the air inlet tank 10. In this embodiment, the electrostatic adsorption device 14 includes a high-voltage generator, a discharge electrode, and a dust collection plate. The electrostatic adsorption device 14 is fixedly installed inside the air inlet tank 10 near the outlet of the air inlet pipe 6 by bolts. The discharge electrode faces the outlet direction of the air inlet pipe 6, and the dust collection plate is arranged parallel behind the discharge electrode. The power cord of the electrostatic adsorption device 14 is led out through the sealed wire hole on the side wall of the air inlet tank 10 and connected to an external power control cabinet. When the exhaust gas enters, it can adsorb ultrafine dust. The above belongs to the prior art, and the principle process will not be described in detail.

[0021] The drive unit includes a maintenance box 5, which is fixedly installed inside the exhaust gas tank 1 on one side. A motor 25 is fixedly installed inside the maintenance box 5. A drive gear 24 is fixedly sleeved on the outside of the output shaft of the motor 25. A fixed seat 20 is fixedly installed on the side of the maintenance box 5 near the inside of the exhaust gas tank 1. A connecting shaft 32 is rotatably installed inside the lower part of the fixed seat 20. A gear 21 is fixedly sleeved on the upper part of the connecting shaft 32. The gear 21 meshes with the drive gear 24. A connecting plate 16 is fixedly installed at the bottom of the connecting shaft 32. Connecting rods 17 are symmetrically installed at the bottom of the connecting plate 16, and the bottom ends of the two connecting rods 17 are connected to the top of the discharge plate 29. In this embodiment, the maintenance box 5 is a cuboid structure with an inspection door on one side. It is bolted to one side of the maintenance box 5. Specifically, when the device is started, the motor 25 drives the drive gear 24 to rotate, causing it to rotate with the gear 21. The gear 21 drives the connecting shaft 32 to rotate inside the fixed seat 20. The connecting plate 16 at the bottom of the connecting shaft 32 rotates synchronously with the connecting shaft 32. The connecting plate 16 drives the discharge plate 29 to rotate through two connecting rods 17. The discharge plate 29 is fixedly connected to the feeding pipe 9, thereby driving the feeding pipe 9 to rotate synchronously, providing power for the turbulence action of the subsequent diversion mechanism.

[0022] The diversion mechanism includes a connecting sleeve 30 fixedly sleeved outside the feed pipe 9 and close to the lower inner side of the filter chamber 23. Symmetrical baffles 26 are installed on the outside of the connecting sleeve 30. The bottom of the baffles 26 slides against the bottom of the filter chamber 23. Diverting parts are provided on the outer surface of the baffles 26. A discharge pipe 7 is connected to one side of the bottom of the filter chamber 23. One end of the discharge pipe 7 extends to the outside of the waste gas tank 1. In this embodiment, the connecting sleeve 30 is made of carbon steel and is fixedly connected to the outside of the feeding pipe 9 by a key connection. When the feeding pipe 9 rotates, the connecting sleeve 30 will drive the baffles 26 on both sides to rotate. On the one hand, it will cause the airflow in the filter chamber 23 to be disturbed, breaking the fixed path of the original fixed bed adsorption airflow, so that the waste gas can fully contact the adsorption material and improve the utilization rate of the adsorption material. On the other hand, it will disturb the adsorption material inside the filter chamber 23. At the same time, when the adsorption material is replaced, the movement of the baffles 26 sliding against the bottom of the filter chamber 23 can be used to push the used adsorption material to the discharge pipe 7 and finally discharge it out of the device, thus cleaning the filter chamber 23. It should be noted that this process should be done after the machine is stopped to avoid affecting the purification of the waste gas.

[0023] The distribution component includes multiple sets of swirling guide vanes 31. One side of the multiple sets of swirling guide vanes 31 is fixedly connected to the outer surface of the turbulence plate 26. All sets of swirling guide vanes 31 are arranged in an arc shape. In this embodiment, the arc-shaped swirl guide plate 31 has a stronger guiding effect on the airflow when rotating, which can decompose the airflow into multiple small swirls, further increasing the contact area and contact frequency between the airflow and the adsorption material. At the same time, it guides the airflow to contact the adsorption material in the filter chamber 23, which can loosen the adsorption material and prevent it from hardening due to long-term static placement. This maintains the porous structure of the adsorption material and extends its service life. It should be noted that in order to ensure the purification of the exhaust gas, the design of matching the filling height of the adsorption material with the distribution of the filter pores 27 avoids the problems of short circuit caused by insufficient adsorption material filling and high gas resistance caused by excessive adsorption material filling.

[0024] The outer surface of the discharge plate 29 is equipped with guide rods at equal intervals along the circumference, and blades 28 are fixedly installed at the ends of the guide rods. In this embodiment, when the blade 28 rotates with the discharge plate 29, the arc-shaped structure interacts with the airflow, propelling the airflow upward.

[0025] A pressure sensor 35 is provided at the bottom of the solid separation filter cover 19. The pressure sensor 35 is rotatably engaged with the feed pipe 9. A filter cake cleaning component is provided on one side of the inside of the air inlet tank 10. The solid separation filter cover 19 is fixedly connected to the feed pipe 9. A material injection pipe 33 is installed in the lower part of the inside of the feed pipe 9. In this embodiment, the pressure sensor 35 is connected to the solid separation filter cover 19 by bolts. The pressure sensor 35 detects the pressure change at the bottom of the solid separation filter cover 19 in real time. When a filter cake forms on the surface of the solid separation filter cover 19, the filtration resistance increases and the pressure value detected by the pressure sensor 35 increases, realizing the monitoring of the filter cake formation state and providing convenience for automatic dust removal. Specifically, when the pressure sensor 35 detects that the pressure value exceeds the set threshold, it automatically triggers the filter cake cleaning component to work. The scraper 18 is driven by the cylinder 34 to scrape off the filter cake on the surface of the solid separation filter cover 19, effectively preventing filter material blockage and caking, maintaining the unobstructed filtration channel, without the need for manual intervention, and reducing maintenance costs.

[0026] The filter cake cleaning component includes a sealed box 8 fixedly embedded inside one side of the air inlet tank 10. A cylinder 34 is sealed and embedded in the upper part of the sealed box 8. A sliding plate 15 is fixedly installed at the telescopic end of the cylinder 34. A scraper 18 is fixedly installed at the end of the sliding plate 15 away from the cylinder 34. Two arc-shaped sealing valve plates 11 are movably clamped inside the lower part of the ash discharge pipe 3. The two arc-shaped sealing valve plates 11 are provided with a sliding groove adapted to the sliding of the feed pipe 9 on the side that is close to each other. In this embodiment, the sealing box 8 is made of stainless steel and has a rectangular sealing structure. It is fixedly embedded in the reserved mounting hole on one side of the air inlet tank 10 by welding. The connection between the sealing box 8 and the inner wall of the air inlet tank 10 is sealed by weld to ensure that the gas will not leak. The arc-shaped sealing valve plate 11 is a rubber plate. The groove of the arc-shaped sealing valve plate 11 fits tightly with the feeding pipe 9 to achieve dynamic sealing between the ash discharge pipe 3 and the feeding pipe 9, thus preventing gas leakage.

[0027] Later, the arc-shaped sealing valve plate 11 can be manually pulled out to open the ash discharge channel during ash cleaning and close the seal after ash cleaning to ensure continuous and stable operation of the device.

[0028] When the pressure sensor 35 triggers the dust removal signal, the two arc-shaped sealing valve plates 11 slide down and to the sides along the slide groove and then separate, opening the dust removal channel of the dust removal pipe 3. The cylinder 34 inside the sealed box 8 is activated. The extension end of the cylinder 34 pushes the slide plate 15 to move smoothly along the guide structure inside the sealed box 8. The slide plate 15 drives the scraper 18 to move towards the solid separation filter cover 19. When the scraper 18 contacts the surface of the solid separation filter cover 19, the solid separation filter cover 19 rotates, and the scraper 18 scrapes off the filter cake on the surface from below. The scraped filter cake falls to the ash discharge pipe 3 under the action of gravity and is discharged from the device through the ash discharge pipe 3.

[0029] Working Principle: The waste gas to be treated enters the air inlet tank 10 through the air inlet pipe 6. It first passes through the electrostatic adsorption device 14, which uses electrostatic adsorption to precisely capture submicron-sized ultrafine graphite dust particles in the waste gas, completing the first stage of solid-gas separation. This initially reduces the concentration of solid particles in the waste gas, preventing subsequent filtration structures from being quickly clogged by ultrafine dust and affecting treatment efficiency. After electrostatic adsorption pretreatment, the waste gas, under the negative pressure generated by the suction fan flange pipe 4 and the external negative pressure equipment, enters the sealed shell area at the bottom of the waste gas tank 1, where it undergoes the second stage of filtration through the solid separation filter hood 19. The solid separation filter hood 19 traps larger solid particles in the waste gas, further purifying the gas while preventing large impurities from entering the subsequent precision filtration structure and causing damage. The gas passing through the solid separation filter hood 19 enters the conical shell 13 through the filter tube 22 in the middle of the sealing plate 12. The conical shell 13 acts as a guide and concentrates the gas, allowing it to enter the upper filter chamber 23 evenly. Multiple filter holes 27 on the inner surface of the filter chamber 23 form a third-level filtration barrier. At the same time, the adsorption material such as activated carbon filled inside the filter chamber 23 adsorbs and purifies gaseous pollutants such as VOCs in the exhaust gas. During the feeding process of activated carbon adsorbent material, activated carbon is first introduced into the feeding pipe 9 through the feeding pipe 33 and the air conveying mechanism, and finally introduced into the filter chamber 23 through the discharge plate 29, thus completing the automatic feeding. Then the feeding pipe 33 is closed, so that the waste gas can be further adsorbed by the activated carbon adsorbent material during the treatment of harmful gases. The motor 25 inside the maintenance box 5 is started. The output shaft of the motor 25 drives the drive gear 24 to rotate at a constant speed. The drive gear 24 meshes with the gear 21 at the upper end of the connecting shaft 32, driving the connecting shaft 32 to rotate in the fixed seat 20. The connecting shaft 32 drives the discharge plate 29 to rotate synchronously through the connecting plate 16 and connecting rod 17 at the bottom, which in turn drives the feeding pipe 9 that runs through the entire device to rotate. When the feeding pipe 9 rotates, the baffles 26 symmetrically installed on the external connecting sleeve 30 rotate accordingly. The bottom of the baffles 26 slides and fits against the bottom of the filter chamber 23. At the same time, the multiple sets of arc-shaped swirling guide plates 31 on the outer surface of the baffles 26 disturb the gas and adsorbent material in the filter chamber 23, so that the waste gas forms a swirling state, ensuring that the gas and the adsorbent material are in uniform contact, and making full use of the adsorption capacity of the adsorbent material. The guide rod and the blades 28 at the end installed along the circumferential direction on the outer surface of the discharge plate 29 play an auxiliary guiding role for the gas below during the rotation, promoting the gas to flow smoothly upward and improving the overall separation efficiency. The ultrafine dust adsorbed by the electrostatic adsorption device 14, the large particulate impurities intercepted by the solid separation filter cover 19, and the tiny particles separated by the filter chamber 23, part of which fall to the bottom of the air inlet tank 10 under the action of gravity and are discharged through the ash discharge pipe 3.

[0030] When solid particles accumulate on the surface of the solid separation filter cover 19 to form a filter cake, the pressure sensor 35 at its bottom detects that the pressure value exceeds the set threshold, triggering the filter cake cleaning mechanism to operate. The telescopic end of the cylinder 34 inside the sealed box 8 pushes the slide plate 15 to move. The slide plate 15 drives the scraper 18 to approach the surface of the solid separation filter cover 19 to scrape and clean the filter cake. The cleaned solid particles are also discharged through the ash discharge pipe 3. The two arc-shaped sealing valve plates 11 inside the ash discharge pipe 3 can be closed during the ash cleaning gap to ensure the internal sealing of the device and prevent gas leakage. After the gas is treated, it is discharged through the suction fan flange pipe 4.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A solid-gas separation device for producing graphite negative electrode material, comprising a waste gas tank (1) and a gas inlet tank (10), characterized in that: The air inlet tank (10) is communicated and installed below the inside of the exhaust tank (1), and the outside of the air inlet tank (10) is equidistantly provided with support legs (2) in the circumferential direction, the top of the exhaust tank (1) is communicated and installed with an air suction fan flange pipe (4), one side of the inside of the air inlet tank (10) is communicated and installed with an air inlet pipe (6), the inside of the air inlet tank (10) is provided with an electrostatic adsorption mechanism, a sealing shell is fixedly installed below the inside of the exhaust tank (1), a solid separation filter cover (19) is rotatably installed in the inside of the sealing shell, a blocking plate (12) is fixedly installed above the solid separation filter cover (19) in the inside of the exhaust tank (1), the blocking plate (12) is communicated and installed with a conical shell (13) through a filter pipe (22) in the middle of the inside, a filter bin (23) is fixedly installed above the inside of the conical shell (13), a plurality of filter holes (27) are formed in the inner surface of the filter bin (23), a dust discharge pipe (3) is communicated and installed at the bottom of the air inlet tank (10), a feeding pipe (9) is rotatably arranged in the middle of the inside of the exhaust tank (1) and the air inlet tank (10), and the feeding pipe (9) sequentially passes through the inside of the solid separation filter cover (19), the filter pipe (22) and the filter bin (23) from below, a connecting pipe (37) is communicated and installed at one side of the inside of the feeding pipe (9) and below the dust discharge pipe (3), a driving member is arranged at the upper end of the feeding pipe (9), and a flow distribution mechanism is arranged outside the feeding pipe (9) and close to the inner side of the filter bin (23).

2. The solid-gas separation device for producing a graphite negative electrode material according to claim 1, characterized in that: The electrostatic adsorption mechanism comprises an electrostatic adsorption device (14) which is fixedly installed in the inside of the air inlet tank (10).

3. The solid-gas separation device for producing a graphite negative electrode material according to claim 1, characterized in that: The driving member comprises a maintenance box (5) which is fixedly installed at one side of the inside of the exhaust tank (1), a motor (25) is fixedly installed in the inside of the maintenance box (5), a driving gear (24) is fixedly sleeved on the output shaft of the motor (25), a fixed seat (20) is fixedly installed at one side of the inside of the exhaust tank (1) and close to the maintenance box (5), a connecting shaft (32) is rotatably installed in the inside of the fixed seat (20) and below, a gear (21) is fixedly sleeved on the outside of the upper end of the connecting shaft (32), the gear (21) is in meshing connection with the driving gear (24), a connecting disc (16) is fixedly installed at the bottom of the connecting shaft (32), two connecting rods (17) are symmetrically installed at the bottom of the connecting disc (16), and the bottom ends of the two connecting rods (17) are connected with the top of a discharging disc (29).

4. The solid-gas separation device for producing a graphite negative electrode material according to claim 1, characterized in that: The flow distribution mechanism comprises a connecting sleeve (30) which is fixedly sleeved on the outside of the feeding pipe (9) and below the inner side of the filter bin (23), turbulence vanes (26) are symmetrically installed on the outside of the connecting sleeve (30), the bottom of each turbulence vane (26) is in sliding fit with the bottom of the filter bin (23), each turbulence vane (26) is provided with a distribution member on the outer surface, a foreign matter discharge pipe (7) is communicated and installed at one side of the bottom of the filter bin (23), and one end of the foreign matter discharge pipe (7) extends to the outside of the exhaust tank (1).

5. The solid-gas separation device for producing a graphite negative electrode material according to claim 4, characterized by: The distributing part comprises multiple groups of spiral flow guide vanes (31), one side of each group of the spiral flow guide vanes (31) is fixedly connected with the outer surface of the spoiler (26), and each group of the spiral flow guide vanes (31) is arranged in an arc shape.

6. The solid-gas separation device for producing a graphite negative electrode material according to claim 1, characterized by: The outer surface of the discharging disc (29) is provided with guide rods equidistantly along the circumferential direction, and the end of each guide rod is fixedly provided with a blade (28).

7. The solid-gas separation device for producing a graphite negative electrode material according to claim 1, characterized by: The bottom of the solid separation filter cover (19) is provided with a pressure sensor (35), the pressure sensor (35) is rotationally connected with the feeding pipe (9), one side of the inner part of the air inlet tank (10) is provided with a filter cake cleaning part, the solid separation filter cover (19) is fixedly connected with the feeding pipe (9), and the lower part of the inner part of the feeding pipe (9) is communicated with and provided with a feeding pipe (33).

8. The solid-gas separation device for producing a graphite negative electrode material according to claim 7, characterized in that: The filter cake cleaning part comprises a sealing box (8) fixedly embedded on one side of the inner part of the air inlet tank (10), a gas cylinder (34) is sealingly embedded in the upper part of the inner part of the sealing box (8), a sliding plate (15) is fixedly installed on the telescopic end of the gas cylinder (34), a scraper (18) is fixedly installed on the end of the sliding plate (15) away from the gas cylinder (34), two arc-shaped sealing valve plates (11) are movably clamped in the lower part of the inner part of the ash discharge pipe (3), and a sliding groove adapted to the sliding of the feeding pipe (9) is formed in the inner part of one side of each arc-shaped sealing valve plate (11).

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