A waste screening and recycling device for carbon material processing

Abstract

The application discloses a waste screening and recycling device for carbon material processing and relates to the technical field of screening devices. The device comprises a cylinder, a mesh cylinder arranged in the cylinder, a spiral screen strip and a spiral receiving strip arranged between the cylinder and the mesh cylinder, a first fan arranged at the bottom end of the mesh cylinder, a sliding block connected to the outer wall of the mesh cylinder, a scraper connected to the sliding block, a fixed plate arranged in the mesh cylinder, and brushes connected to the two ends of the fixed plate. The fine particles are screened out by the spiral screen strip, and the first fan forms a negative pressure in the mesh cylinder to discharge the fine particles into a dust bag, thereby effectively avoiding the diffusion of the fine particles into the air and affecting the health of the workers. The mesh cylinder rotates, the brushes dredge the holes on the mesh cylinder, and the scraper moves upward along the surface of the spiral screen strip, thereby pushing and cleaning the particles blocked in the holes of the spiral screen strip, ensuring the screening efficiency, and the filter screen can intercept the fine particles and facilitate sampling at any time.

Description

Technical Field

[0001] The present invention relates to the technical field of screening devices, and in particular to a waste screening and recovery device for carbon material processing. Background Art

[0002] In the production process of carbon products, the raw materials need to be processed into different shapes. The scraps after cutting the finished products can be recycled, crushed and screened for reuse. A screening device is required for screening.

[0003] Referring to the Chinese invention patent, publication number: CN 117753655 A, titled: A screening device for carbon product manufacturing, the invention provides a main body, a slider, a screw rod, and a cleaning motor structure, so that during the operation of the device, the user can drive the cam to rotate synchronously by rotating the output shaft of the screening motor, thereby improving the screening effect of the screening plate on carbon manufacturing raw materials. At the same time, the user can drive the two screw rods to rotate synchronously and in opposite directions by rotating the screw rod output shaft, and utilize the guiding operation of the guide trough to facilitate the user's recycling operation, without the need for manual cleaning by the user, thereby improving the practicality of the device.

[0004] However, in actual use, the above and similar technical solutions still have some problems:

[0005] 1. During the shaking screening process, the noise generated by mechanical vibration is high, seriously affecting the comfort and quality of the working environment and posing a potential threat to the operator's hearing health. The motor, as a key component driving the screening equipment, needs to work continuously for a long time to maintain screening stability, resulting in a significant increase in power consumption and increased operating costs. The rectangular screen design, although meeting the screening needs to a certain extent, occupies a large movement space and is difficult to control the screening speed when placed horizontally, affecting the screening efficiency and accuracy.

[0006] 2. During the screening process, due to the light weight of the fine particles, they are easily affected by airflow and suspended in the air, forming dust. This dust not only pollutes the working environment, but also may cause damage to the respiratory system of the operators. Long-term exposure may even cause occupational diseases.

[0007] 3. As the core component of the screening equipment, the smoothness of the screen directly affects the screening efficiency. Therefore, the screen needs to be dredged regularly to ensure its normal operation. During the dredging process, brushes and scrapers are usually used for cleaning. However, due to the long length of the scraper and the long-term use, the middle part of the screen is easily deformed by external forces. The deformation of the screen will lead to a decrease in the cleaning effect and affect the accuracy and efficiency of screening. Summary of the Invention

[0008] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a waste screening and recovery device for carbon material processing that is convenient for effectively handling dust, controlling screening speed, taking samples in time, and dredging.

[0009] In order to achieve the above object, the present invention adopts the following technical solutions:

[0010] A waste screening and recovery device for carbon material processing, comprising a cylinder, a screening mechanism connected to the cylinder, the screening mechanism comprising a mesh cylinder, a mesh cylinder provided inside the cylinder, spiral screen bars and spiral receiving bars provided between the cylinder and the mesh cylinder, the spiral screen bars and the spiral receiving bars being parallel to each other, and the spiral receiving bars being located below the spiral screen bars;

[0011] The net cylinder is connected to a dust particle processing mechanism, the dust particle processing mechanism includes a first fan, and the first fan is installed at the bottom end of the inner part of the net cylinder;

[0012] The net cylinder is connected to a cleaning mechanism, which includes a slider, a slider is slidably connected to the outer wall of the net cylinder, a second spring is installed between the slider and the net cylinder, the slider is connected to a scraper, the scraper contacts the surface of the spiral screen bar, and the net cylinder is rotatably connected to the inside of the cylinder;

[0013] The mesh cylinder is connected to a dredging observation mechanism, which includes a fixed plate. A fixed plate is provided inside the mesh cylinder, which is fixedly connected to the bottom end of the cylinder body. A collecting cylinder is plugged into the top of the fixed plate, and a filter is installed at the bottom end of the collecting cylinder. Brushes are connected to both ends of the fixed plate, and the brushes are in contact with the inner wall of the mesh cylinder. An air duct is provided on the fixed plate for connecting the collecting cylinder with the inside of the mesh cylinder.

[0014] Preferably, the fixing plate is provided with a second fan below the collecting cylinder, a first spring is provided between the brush and the fixing plate, a through groove is provided on the brush, and the interior of the mesh cylinder is connected to the air duct through the through groove.

[0015] Preferably, the cylinder is connected to a control component for driving the mesh cylinder to rotate, the control component includes a first gear, the outer wall of the mesh cylinder is installed with the first gear, the cylinder is installed with a fixing frame, the fixing frame is installed with a motor, the output shaft of the motor is installed with a second gear, and the second gear is engaged with the first gear.

[0016] Preferably, an outer wall of the cylinder is provided with a penetrating air hole, and the cylinder is provided with an exhaust pipe below the first blower, and the exhaust pipe is externally connected to a dust collecting bag.

[0017] Preferably, the top end of the cylinder is connected to a top plate, and a driving assembly is connected to the cylinder, and the driving assembly includes a telescopic cylinder, and the telescopic cylinder is slidably connected to the top plate. An electric push rod is installed on the outer wall of the cylinder, and one end of the telescopic cylinder is installed on the telescopic end of the electric push rod. The bottom end of the telescopic cylinder is connected to the top end of the spiral screen bar and the spiral supporting bar, and a lower hopper is installed on the top plate, and the lower hopper is slidably connected to the telescopic cylinder.

[0018] Preferably, the spiral screen bars and the spiral supporting bars are connected with a limiting assembly, and the limiting assembly includes a rotating bar, and rotating bars are respectively installed at both ends of the spiral screen bars and the spiral supporting bars. A connecting plate is rotatably connected between a pair of the rotating bars at the same end, and the connecting plate at the top is fixedly connected to the bottom end of the telescopic cylinder, and the lower hopper is connected to the top end of the spiral screen bar through the telescopic cylinder.

[0019] Preferably, the connecting plate at the top end is slidably connected to the cylinder, and the connecting plate at the bottom end is fixedly connected to the cylinder.

[0020] Preferably, both inner and outer ends of the spiral screen bars and the spiral connecting bars are fixedly connected with rubber strips, and the rubber strips at the inner and outer ends respectively contact the outer wall of the mesh cylinder and the inner wall of the cylinder.

[0021] Preferably, a through groove is provided on the connecting plate at the bottom end, and the spiral screen bars and the spiral connecting bars are respectively equipped with a coarse material hopper and a fine material hopper, and the coarse material hopper and the fine material hopper are both fixedly connected to the cylinder, and the coarse material hopper and the fine material hopper both pass through the outer wall of the cylinder, and the coarse material hopper and the fine hopper are respectively arranged at the lower ends of the spiral screen bars and the spiral connecting bars, and the coarse material hopper passes through the through groove.

[0022] Preferably, a sliding rod is installed on the outer wall of the mesh cylinder, the slider is slidably connected to the sliding rod, the second spring is movably sleeved on the outside of the sliding rod, a fixing rod is installed on the slider, a connecting rod is movably connected between the fixing rod and the scraper, and a torsion spring is installed between the connecting rod and the scraper.

[0023] Compared with the prior art, the present invention provides a waste screening and recovery device for carbon material processing, which has the following beneficial effects:

[0024] 1. The waste screening and recovery device for carbon material processing places the crushed carbon material waste in the lower hopper. The carbon material waste falls onto the spiral screen bars through the lower hopper and slides downward along the spiral screen bars under the action of gravity for screening. Fine particles will be screened out and fall onto the spiral receiving bars, thereby completing the screening purpose. The electric push rod is started to compress the spiral screen bars and the spiral receiving bars, change the pitch, and control the slope, thereby controlling the movement speed of the carbon material waste, making it easy to control the discharge speed according to needs, thereby improving the screening efficiency.

[0025] 2. The waste screening and recovery device for carbon material processing, for fine carbon material waste particles with low quality, starts the first fan, thereby forming a negative pressure in the mesh cylinder, and external air enters through the air holes, passes through the spiral screen bars and the spiral receiving bars, and then enters the top of the first fan through the holes in the mesh cylinder. The air will carry the fine carbon material waste particles between the spiral screen bars and the spiral receiving bars, thereby extracting the particulate dust and discharging it into the interior of the exhaust pipe through the first fan. It can be collected by installing a dust bag at the outer end of the exhaust pipe, effectively preventing the particulate dust from spreading into the air and affecting the health of the staff.

[0026] 3. The waste screening and recovery device for carbon material processing starts the motor, the mesh cylinder rotates, and the brush contacts the inner wall of the mesh cylinder tightly, so that the holes on the mesh cylinder can be dredged, ensuring the efficiency of dust removal. At the same time, the mesh cylinder rotates, so that the scraper moves upward in a spiral along the surface of the spiral screen bar, thereby pushing and cleaning the particles blocked in the mesh of the spiral screen bar. The spiral screen bar is narrow and not easy to sink, and the contact area is large during scraping, thereby ensuring the screening efficiency. The filter can intercept fine particles. During the screening process, the collection cylinder can be pulled out to observe the size and composition of the fine particles in the filter, which is convenient for sampling at any time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A three-dimensional view of a waste screening and recovery device for carbon material processing proposed by the present invention;

[0028] Figure 2 A view of the spiral connecting strip connection structure of the present invention;

[0029] Figure 3 A view of a fixing rod connection structure of the present invention;

[0030] Figure 4 A view of the spiral screen bar connection structure of the present invention;

[0031] Figure 5 A view of the rubber strip connection structure of the present invention;

[0032] Figure 6 A view of the mesh tube connection structure of the present invention;

[0033] Figure 7 A view of a scraper connection structure of the present invention;

[0034] Figure 8 A view of a fixed plate connection structure of the present invention;

[0035] Figure 9 A view of a brush connection structure of the present invention;

[0036] Figure 10 This is a view of the air duct connection structure of the present invention.

[0037] In the figure: 1. Cylinder; 2. Screening mechanism; 21. Drive assembly; 211. Electric push rod; 212. Telescopic cylinder; 22. Coarse material hopper; 23. Fine material hopper; 24. Top plate; 25. Lower hopper; 26. Spiral screen bar; 27. Spiral support bar; 28. Limiting assembly; 281. Rubber strip; 282. Rotating bar; 283. Connecting plate; 284. Through slot; 29. ​​Net cylinder; 3. Dust particle handling mechanism; 31. Air hole; 32. Discharge pipe; 33. First fan; 4. dredging observation mechanism; 41. collecting tube; 42. fixing plate; 43. brush; 44. air duct; 45. second fan; 46. filter; 47. first spring; 5. cleaning mechanism; 51. second spring; 52. scraper; 53. control assembly; 531. fixing frame; 532. motor; 533. first gear; 534. second gear; 54. connecting rod; 55. fixing rod; 56. torsion spring; 57. slider; 58. slide rod. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0039] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention. Example

[0040] Reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 A waste screening and recovery device for carbon material processing includes a cylinder 1, a screening mechanism 2 is connected to the cylinder 1, the screening mechanism 2 includes a mesh cylinder 29, the mesh cylinder 29 is provided inside the cylinder 1, and spiral screen bars 26 and spiral receiving bars 27 are provided between the cylinder 1 and the mesh cylinder 29. The spiral screen bars 26 and the spiral receiving bars 27 are parallel, and the spiral receiving bars 27 are located below the spiral screen bars 26. The parallel spiral screen bars 26 and the spiral receiving bars 27 facilitate the screening of carbon particles and facilitate the receiving and delivery of fine particles under screening.

[0041] In the present invention, the top of the cylinder 1 is connected to a top plate 24, and a drive assembly 21 is connected to the cylinder 1. The drive assembly 21 includes a telescopic cylinder 212, and the telescopic cylinder 212 is slidably connected to the top plate 24. An electric push rod 211 is installed on the outer wall of the cylinder 1, and one end of the telescopic cylinder 212 is installed on the telescopic end of the electric push rod 211. The bottom end of the telescopic cylinder 212 is connected to the top of the spiral screen bar 26 and the spiral receiving bar 27. A lower hopper 25 is installed on the top plate 24, and the lower hopper 25 is slidably connected to the telescopic cylinder 212, so that the spiral screen bar 26 and the spiral receiving bar 27 can be controlled by the electric push rod 211 to be compressed or stretched, so as to control the unloading speed and thus facilitate the selection of a suitable speed for different carbon particles.

[0042] In the present invention, a limiting assembly 28 is connected to the spiral screen bar 26 and the spiral connecting bar 27, and the limiting assembly 28 includes a rotating bar 282. The spiral screen bar 26 and the spiral connecting bar 27 are respectively installed at both ends with a rotating bar 282. A connecting plate 283 is rotatably connected between a pair of rotating bars 282 at the same end. The connecting plate 283 at the top is fixedly connected to the bottom end of the telescopic cylinder 212. The lower hopper 25 is connected to the top of the spiral screen bar 26 through the telescopic cylinder 212, thereby ensuring the synchronous movement of the top of the spiral screen bar 26 and the spiral connecting bar 27.

[0043] In the present invention, the top connecting plate 283 is slidably connected to the cylinder 1, and the bottom connecting plate 283 is fixedly connected to the cylinder 1, thereby preventing the bottom ends of the spiral screen bars 26 and the spiral support bars 27 from moving.

[0044] In the present invention, the inner and outer ends of the spiral screen bars 26 and the spiral connecting bars 27 are fixedly connected with rubber strips 281. The rubber strips 281 at the inner and outer ends respectively contact the outer wall of the mesh cylinder 29 and the inner wall of the cylinder 1, thereby increasing the airtightness between the rubber strips 281 and the outer wall of the mesh cylinder 29 and the inner wall of the cylinder 1, preventing small particles from getting stuck, and at the same time preventing particles from escaping from the spiral screen bars 26 and the spiral connecting bars 27.

[0045] In the present invention, a through groove 284 is provided on the connecting plate 283 at the bottom end, and the spiral screen bar 26 and the spiral connecting bar 27 are respectively equipped with a coarse material hopper 22 and a fine material hopper 23, and the coarse material hopper 22 and the fine material hopper 23 are both fixedly connected to the cylinder 1, and the coarse material hopper 22 and the fine material hopper 23 both pass through the outer wall of the cylinder 1. The coarse material hopper 22 and the fine material hopper 23 are respectively arranged at the lower ends of the spiral screen bar 26 and the spiral connecting bar 27, and the coarse material hopper 22 passes through the through groove 284, so as to facilitate the discharge of the screened carbon particles. Example

[0046] Based on Example 1, Figure 8 、 Figure 9 and Figure 10A waste screening and recovery device for carbon material processing, a dust particle processing mechanism 3 is connected to the mesh cylinder 29, the dust particle processing mechanism 3 includes a first fan 33, and the first fan 33 is installed at the bottom end of the inner part of the mesh cylinder 29 to facilitate the formation of negative pressure inside the mesh cylinder 29.

[0047] In the present invention, a penetrating air hole 31 is provided on the outer wall of the cylinder 1. An exhaust pipe 32 is installed on the cylinder 1 below the first fan 33. The exhaust pipe 32 is externally connected to a dust collecting bag, so as to facilitate the collection of fine particles. Example

[0048] Based on Example 2, Figure 6 and Figure 7 A waste screening and recycling device for carbon material processing, a cleaning mechanism 5 is connected to the mesh cylinder 29, the cleaning mechanism 5 includes a slider 57, the outer wall of the mesh cylinder 29 is slidably connected to the slider 57, a second spring 51 is installed between the slider 57 and the mesh cylinder 29, the slider 57 is connected to the scraper 52, the scraper 52 is in contact with the surface of the spiral screen bar 26, the mesh cylinder 29 is rotatably connected to the inside of the cylinder 1, so as to facilitate the cleaning of the blocked mesh holes on the spiral screen bar 26, the mesh cylinder 29 is connected to the dredging mechanism 57 ...7 includes a slider 57, the second spring 51 is installed between the slider 57 and the mesh cylinder 29, the second spring 51 is installed between the slider 57 and the mesh cylinder 29, the second spring 51 is installed between the slider 57 and the mesh cylinder Observation mechanism 4, dredging observation mechanism 4 includes a fixed plate 42, a fixed plate 42 is provided inside the mesh tube 29, the fixed plate 42 is fixedly connected to the bottom end of the cylinder 1, a collecting tube 41 is inserted into the top of the fixed plate 42, a filter screen 46 is installed at the bottom end of the collecting tube 41, and brushes 43 are connected to both ends of the fixed plate 42. The brush 43 is in contact with the inner wall of the mesh tube 29. An air duct 44 is provided on the fixed plate 42 for connecting the collecting tube 41 with the inside of the mesh tube 29, so as to facilitate dredging of the mesh tube 29 through the brush 43.

[0049] In the present invention, a second fan 45 is installed on the fixed plate 42 below the collecting tube 41, a first spring 47 is installed between the brush 43 and the fixed plate 42, a through groove is provided on the brush 43, and the interior of the mesh tube 29 is connected to the air duct 44 through the through groove, thereby increasing the negative pressure at the bottom of the filter 46, making it easier to capture floating dust particles.

[0050] In the present invention, a control component 53 for driving the mesh drum 29 to rotate is connected to the cylinder 1, and the control component 53 includes a first gear 533. The outer wall of the mesh drum 29 is installed with the first gear 533. A fixing frame 531 is installed on the cylinder 1, and a motor 532 is installed on the fixing frame 531. A second gear 534 is installed on the output shaft of the motor 532. The second gear 534 is engaged with the first gear 533, thereby facilitating the driving of the brush 43 and the scraper 52 to rotate and achieve the purpose of cleaning.

[0051] In the present invention, a sliding rod 58 is installed on the outer wall of the mesh cylinder 29, and the slider 57 is slidably connected to the sliding rod 58. The second spring 51 is movably sleeved on the outside of the sliding rod 58. A fixing rod 55 is installed on the slider 57. A connecting rod 54 is movably connected between the fixing rod 55 and the scraper 52. A torsion spring 56 is installed between the connecting rod 54 and the scraper 52, thereby ensuring that the scraper 52 and the surface of the spiral screen bar 26 are in close contact, thereby ensuring the cleaning effect.

[0052] Working principle: The crushed carbon material waste is placed in the lower hopper 25, and the carbon material waste falls onto the spiral screen bar 26 through the lower hopper 25, and slides downward along the spiral screen bar 26 under the action of gravity. The rubber strip 281 plays a sealing role to prevent fine particles from being stuck in the gaps at both ends of the spiral screen bar 26, thereby performing screening. The fine particles will be screened out and fall onto the spiral receiving strip 27, which slides downward through the spiral receiving strip 27 and is separated through the coarse hopper 22 and the fine hopper 23, thereby completing the screening purpose. When it is necessary to adjust the screening speed, the electric push rod 211 is started to pull the telescopic cylinder 212 to slide downward, and the fine particles are separated by the coarse hopper 22 and the fine hopper 23. The connecting plate 283 at the top pulls the rotating bar 282 to move, thereby driving the top ends of the spiral screen bars 26 and the spiral receiving bars 27 to move downward synchronously. The rotating bar 282 can ensure the smooth connection between the connecting plate 283 and the spiral screen bars 26 and the spiral receiving bars 27, thereby compressing the spiral screen bars 26 and the spiral receiving bars 27, changing the pitch. The pitch is reduced and the slope is gentler, thereby slowing down the movement speed of the carbon material waste, which is convenient for increasing the screening quality. The electric push rod 211 is extended and the slope becomes steeper, thereby increasing the movement speed of the carbon material waste, which is convenient for quickly screening out waste materials with large differences in coarseness and fineness, thereby improving the screening efficiency.

[0053] For the fine carbon material waste particles, which have a lower mass, the first fan 33 is started, thereby forming a negative pressure in the mesh cylinder 29, and the external air enters through the air holes 31, passes through the spiral screen bars 26 and the spiral receiving bars 27, and then enters the top of the first fan 33 through the holes in the mesh cylinder 29. The air will carry the fine carbon material waste particles between the spiral screen bars 26 and the spiral receiving bars 27, thereby extracting the particle dust and discharging it into the interior of the discharge pipe 32 through the first fan 33. A dust bag can be installed at the outer end of the discharge pipe 32 to collect the dust, effectively preventing the particle dust from spreading into the air and affecting the health of the workers.

[0054] Start the motor 532, the motor 532 drives the second gear 534 to rotate, thereby driving the first gear 533 to rotate, driving the mesh cylinder 29 to rotate, and when the mesh cylinder 29 rotates, the inner side will rub against the brush 43, and the first spring 47 pushes the brush 43 to tightly contact the inner wall of the mesh cylinder 29, so that the holes on the mesh cylinder 29 can be dredged, ensuring the efficiency of dust removal. At the same time, the rotation of the mesh cylinder 29 will drive the slider 57 to rotate synchronously, and drive the scraper 52 to rotate through the fixed rod 55 and the connecting rod 54. The torsion spring 56 pushes the scraper 52 to tightly contact the surface of the spiral screen bar 26, so that the scraper 52 moves along the spiral screen bar 26. 6 surface moves in an upward spiral motion, thereby pushing and cleaning the particles blocked in the mesh of the spiral screen bar 26 to ensure screening efficiency. When the scraper 52 moves to the top, the drive motor 532 reverses, thereby driving the scraper 52 to move downward and reset, so as to facilitate work again. While the brush 43 is rotating, the second fan 45 works, forming a negative pressure at one end of the brush 43 through the air duct 44, sucking in the fine particles brushed off, and intercepting the fine particles under the action of the filter 46. During the screening process, the collecting cylinder 41 can be pulled out to observe the size and composition of the fine particles in the filter 46, which is convenient for sampling at any time.

[0055] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A waste screening and recovery device for carbon material processing, comprising a cylinder with a screening mechanism connected thereto, characterized in that: The screening mechanism includes a mesh cylinder, a mesh cylinder is arranged inside the cylinder, spiral screen bars and spiral receiving bars are arranged between the cylinder and the mesh cylinder, the spiral screen bars and the spiral receiving bars are parallel to each other, and the spiral receiving bars are located below the spiral screen bars; The net cylinder is connected to a dust particle processing mechanism, which includes a first fan. The first fan is installed at the bottom end of the net cylinder. The net cylinder is connected to a cleaning mechanism, which includes a slider. The outer wall of the net cylinder is slidably connected to the slider. A second spring is installed between the slider and the net cylinder. The slider is connected to a scraper. The scraper contacts the surface of the spiral screen bar. The net cylinder is rotatably connected to the inside of the cylinder. The net cylinder is connected to a dredging observation mechanism, which includes a fixed plate. The inside of the net cylinder is provided with a fixed plate, which is fixedly connected to the bottom end of the cylinder body. The top of the fixed plate is plugged with a collecting cylinder, and the bottom end of the collecting cylinder is installed with a filter screen. Both ends of the fixed plate are connected to brushes, which contact the inner wall of the net cylinder. The fixed plate is provided with an air duct for connecting the collecting cylinder with the inside of the net cylinder. A second fan is installed on the fixed plate below the collecting cylinder, a first spring is installed between the brush and the fixed plate, a through slot is provided on the brush, and the inside of the net cylinder is connected to the air duct through the through slot; The top of the cylinder is connected to a top plate, and a drive assembly is connected to the cylinder. The drive assembly includes a telescopic cylinder, and the top plate is slidably connected to the telescopic cylinder. An electric push rod is installed on the outer wall of the cylinder. One end of the telescopic cylinder is installed on the telescopic end of the electric push rod. The bottom end of the telescopic cylinder is connected to the top of the spiral screen bar and the spiral receiving bar. A lower hopper is installed on the top plate, and the lower hopper is slidably connected to the telescopic cylinder. The spiral screen bar and the spiral receiving bar are connected with a limit assembly, which includes a rotating bar. The spiral screen bar and the spiral receiving bar are respectively installed with a rotating bar at both ends. A connecting plate is rotatably connected between a pair of rotating bars at the same end. The connecting plate at the top is fixedly connected to the bottom end of the telescopic cylinder. The lower hopper is connected to the top of the spiral screen bar through the telescopic cylinder. The connecting plate at the top is slidably connected to the cylinder, and the connecting plate at the bottom is fixedly connected to the cylinder.

2. A waste screening and recovery device for carbon material processing according to claim 1, characterized in that: The cylinder is connected to a control assembly for driving the net cylinder to rotate, the control assembly includes a first gear, the outer wall of the net cylinder is installed with the first gear, a fixing frame is installed on the cylinder, a motor is installed on the fixing frame, a second gear is installed on the output shaft of the motor, and the second gear is engaged with the first gear.

3. The waste screening and recovery device for carbon material processing according to claim 1, characterized in that: An air hole is provided on the outer wall of the cylinder. An exhaust pipe is installed on the cylinder below the first fan, and a dust collecting bag is connected to the exhaust pipe.

4. The waste screening and recovery device for carbon material processing according to claim 1, characterized in that: The inner and outer ends of the spiral screen bars and the spiral connecting bars are fixedly connected with rubber strips, and the rubber strips at the inner and outer ends respectively contact the outer wall of the mesh cylinder and the inner wall of the cylinder.

5. The waste screening and recovery device for carbon material processing according to claim 1, characterized in that: A through slot is provided on the connecting plate at the bottom end, and the spiral screen bars and the spiral connecting bars are respectively equipped with a coarse material hopper and a fine material hopper. The coarse material hopper and the fine material hopper are both fixedly connected to the cylinder body, and both the coarse material hopper and the fine material hopper pass through the outer wall of the cylinder body. The coarse material hopper and the fine material hopper are respectively arranged at the lower ends of the spiral screen bars and the spiral connecting bars, and the coarse material hopper passes through the through slot.

6. The waste screening and recovery device for carbon material processing according to claim 1, characterized in that: A sliding rod is installed on the outer wall of the mesh cylinder, the slider is slidably connected to the sliding rod, the second spring is movably sleeved on the outside of the sliding rod, a fixing rod is installed on the slider, a connecting rod is movably connected between the fixing rod and the scraper, and a torsion spring is installed between the connecting rod and the scraper.

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