Electrostatic impurity removing machine for materials

Abstract

The utility model relates to a material electrostatic impurity removing machine, and belongs to the technical field of tobacco impurity removing, the material electrostatic impurity removing machine comprises a shell, a conveyor and a shred removing electrostatic belt, a driving assembly is arranged in the shell, and a first impurity removing assembly for cleaning the shred removing electrostatic belt for the first time and a second impurity removing assembly for cleaning the shred removing electrostatic belt for the second time are arranged in the shell; the second impurity removing assembly comprises a pressing roller and a supporting roller, the pressing roller and the supporting roller are jointly tightened and wound with a rubber conveying belt, one side of the rubber conveying belt is tightly attached to the wire removing electrostatic belt, a cleaning pool is arranged in the shell, the supporting roller is located in the cleaning pool, a scraping plate is arranged in the cleaning pool, a heating module is arranged in the second shell, and the heating module is connected with a heating piece. The heating piece is attached to the side, away from the silk removing belt, of the rubber conveying belt, and the pressing roller is driven by a motor. The device has the advantages that impurities on the electrostatic belt can be removed more thoroughly, the situation that residual impurities on the electrostatic belt are mixed with tobacco flow again is reduced, and the impurity removal effect is improved.

Description

Technical Field

[0001] This application relates to the technical field of tobacco impurity removal, and particularly to an electrostatic impurity removal machine for materials. Background Art

[0002] With the continuous development of tobacco processing technology, the quality requirements for tobacco products are getting higher and higher. Among them, hemp fibers are a difficult problem for re-drying enterprises. Most re-drying plants have added some hemp fiber removal devices in their production processes, such as hemp fiber removal machines and sticky fiber machines. These can effectively remove some larger and bonded hemp fibers or hemp ropes, but it is very difficult to remove smaller and finer hemp fibers, such as single-filament hemp fibers.

[0003] Publication No. CN216651283U discloses a multi-layer material electrostatic on-line hemp fiber removal machine, which includes a first electrostatic fiber removal component, a first conveyor, a second electrostatic fiber removal component, a second conveyor, a third electrostatic fiber removal component, a third conveyor and a machine body shell sequentially arranged from top to bottom inside the machine body shell. By using the electrostatic properties of materials and the physical properties of one-way sticky cloth, the adhesion of hemp fibers can be realized, and small impurities such as hemp fibers and hemp fluff can be effectively removed without polluting the tobacco leaves. However, after using the electrostatic belt to adsorb impurities, only the wiping wheel assembly is used to strip the impurities on the electrostatic belt, which will cause the impurities on the electrostatic belt to be not cleaned thoroughly and the situation of impurity residue. This is likely to cause the residual impurities on the electrostatic belt to be re-mixed with the tobacco leaf flow, resulting in poor impurity removal effect. Utility Model Content

[0004] In order to more thoroughly remove the impurities on the electrostatic belt, reduce the situation of the residual impurities on the electrostatic belt being re-mixed with the tobacco leaf flow, and improve the impurity removal effect, this application provides an electrostatic impurity removal machine for materials.

[0005] The electrostatic impurity removal machine for materials provided by this application adopts the following technical solutions:

[0006] An electrostatic impurity removal machine for materials, including a housing, a conveyor and a wire removal electrostatic belt. A driving component is arranged inside the housing, and the driving component drives the wire removal electrostatic belt to move. The conveyor is located below the wire removal electrostatic belt. The conveyor transports the tobacco leaf flow and makes the tobacco leaf flow rub against the wire removal electrostatic belt. A first impurity removal component for first cleaning the wire removal electrostatic belt and a second impurity removal component for second cleaning the wire removal electrostatic belt are arranged inside the housing;

[0007] The second impurity removal component includes a pressing roller and a supporting roller. The pressing roller and the supporting roller jointly tension and wind a rubber conveyor belt. One side of the rubber conveyor belt is in close contact with the wire removing static belt. A cleaning pool is arranged inside the housing. The supporting roller is located in the cleaning pool. One end of the rubber conveyor belt is immersed in the cooling cleaning liquid in the cleaning pool. A scraper is arranged in the cleaning pool and is attached to the rubber conveyor belt. A heating module is arranged inside the second housing. The heating module is connected with a heating sheet, and the heating sheet is attached to the side of the rubber conveyor belt facing away from the wire removing belt. The pressing roller is driven by a motor.

[0008] By adopting the above technical solution, the tobacco leaf flow is discharged from the housing feed port to the conveyor. The friction between the electrostatic electret wire removing static belt and the tobacco leaves generates static electricity to adsorb light impurities such as fine hemp fibers, string, and cocoons. The wire removing static belt has a barb design that can hook and carry these impurities. Subsequently, the impurities adhered to the cloth belt are removed by the first impurity removal component to achieve the first automatic cleaning.

[0009] After the first cleaning is completed, the wire removing static belt continues to move. The pressing roller drives the rubber conveyor belt to rotate. The rubber conveyor belt first passes through the heating sheet to be heated and softened to improve the viscosity of the rubber conveyor belt. Then the rubber conveyor belt adheres to the residual impurities on the wire removing static belt. Next, the rubber conveyor belt enters the cleaning pool for cooling to reduce the viscosity of the rubber conveyor belt. At the same time, the scraper scrapes the impurities on the rubber conveyor belt into the cleaning pool to achieve the secondary cleaning of the wire removing static belt, making the removal of impurities on the static belt more thorough, reducing the situation of the residual impurities on the static belt being remixed with the tobacco leaf flow, improving the impurity removal effect, and further improving the quality of the tobacco leaves.

[0010] Optionally, the driving component includes a driving roller and a driven roller. The driving roller and the driven roller are both rotatably connected inside the housing. The wire removing static belt is wound around the driving roller and the driven roller. The driving roller is driven by a motor.

[0011] Optionally, a first tightening member for tightening the two bottom ends of the wire removing static belt and a second tightening member for tightening the inner side of the top of the wire removing static belt are arranged inside the housing.

[0012] By adopting the above technical solution, the first tightening member and the second tightening member facilitate adjusting the wire removing static belt to be in a tightened state.

[0013] Optionally, the first tensioning member includes a swing rod. Swing rods are rotatably provided at both ends of the rotating shafts of the driving roller and the driven roller. The swing rods at both ends of the driving roller are jointly connected to a first connecting shaft, and the swing rods at both ends of the driven roller are also jointly connected to the first connecting shaft. A supporting wheel is rotatably connected to the first connecting shaft. The supporting wheel abuts against the inner bottom of one end of the wire-removing electrostatic belt. Fixed plates are provided on both sides of the driving roller and both sides of the driven roller. Arc-shaped grooves are formed in the fixed plates. The swing rod is connected with a limit screw, the limit screw passes through the arc-shaped groove, and the limit screw is threadedly connected with a limit nut. The limit nut abuts against the fixed plate.

[0014] By adopting the above technical solution, when adjusting the position of the swing rod, loosen the limit nut, and the limit screw can move in the arc-shaped groove, so that the swing rod can rotate normally. Swing the swing rod, the swing rod drives the supporting wheel to rotate, and the supporting wheel tightens the two ends of the bottom of the wire-removing belt. Then tighten the limit nut to make the limit nut abut against the fixed plate, complete the adjustment of the swing rod and the supporting wheel, and the supporting wheel abuts against the wire-removing electrostatic belt.

[0015] Optionally, the second tensioning member includes at least two adjusting seats. A fixing nut is fixed on the adjusting seat. The fixing nut is threadedly connected with a fixing screw. A rotating nut is fixed on the fixing screw. The rotating nut is rotatably connected with a connecting seat. The connecting seat is connected with a bracket. A supporting plate is installed on the bracket. The supporting plate abuts against the inner top of the wire-removing belt.

[0016] By adopting the above technical solution, turn the rotating nut to make the fixing screw rotate. The fixing screw drives the movement, and the rotating nut drives the bracket to rise, realizing the rise of the supporting plate to abut against the inner top of the wire-removing belt.

[0017] Optionally, the fixed plates on both sides of the driving roller are both connected with moving seats. A slide rail is provided on the second housing. The moving seat is slidably connected with the slide rail. A pressing bolt is provided on the moving seat. The pressing bolt abuts against the slide rail. The pressing roller is rotatably connected with the fixed plates on both sides of the driving roller. The pressing roller is driven by a motor. The rubber conveyor belt bypasses the pressing roller and abuts against the wire-removing electrostatic belt.

[0018] By adopting the above technical solution, loosen the pressing bolt, adjust the moving seat, so that the moving seat drives the fixed plate to move, and the fixed plate drives the pressing roller to move, so that the rubber conveyor belt is tightened and abuts against the wire-removing electrostatic belt, thus facilitating the adjustment of the rubber conveyor belt and ensuring that the rubber conveyor belt can remove impurities stably.

[0019] Optionally, the first impurity removal component is located on one side of the driven roller. The first impurity removal component includes a cleaning roller, a cleaning brush, and a guide plate. The cleaning roller is rotatably connected to the two fixing plates located on one side of the driven roller. The cleaning roller is driven by a motor. The cleaning brush is arranged on the circumferential surface of the cleaning roller. An impurity collection box is installed below the cleaning roller. The fixing plate is connected with a guide plate. The guide plate is located between the impurity collection box and the cleaning roller. The guide plate is inclined. The top of the guide plate is located below the driven roller, and the bottom of the guide plate is located above the impurity collection box.

[0020] By adopting the above technical solution, the motor drives the cleaning roller to rotate. When the wire removing static belt passes between the driven roller and the cleaning roller, the cleaning brush removes the impurities on the wire removing belt. The impurities fall on the guide plate and roll into the impurity collection box, completing the first removal of the impurities on the wire removing belt.

[0021] Optionally, a partition plate is arranged in the housing. The partition plate divides the housing into an upper impurity removal space and a lower impurity removal space. The conveyor, the wire removing static belt, the driving component, the first support member, the second support member, the first impurity removal component, and the second impurity removal component are all arranged in the upper impurity removal space and the lower impurity removal space. The discharge port of the conveyor located in the upper impurity removal space is communicated with the lower impurity removal space. The conveyor located in the lower impurity removal space receives the tobacco discharged by the conveyor located in the upper impurity removal space. The discharge port of the conveyor located in the lower impurity removal space is communicated with the discharge port of the housing.

[0022] By adopting the above technical solution, double-layer impurity removal can be carried out, improving the impurity removal ability and further removing impurities such as hemp silk, thin ropes, and cocoons.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. After the first cleaning is completed, the wire removing static belt continues to move. The pressing roller drives the rubber conveyor belt to drive. The rubber conveyor belt first passes through the heating sheet to be heated and softened, improving the viscosity of the rubber conveyor belt. Then the rubber conveyor belt adheres to the residual impurities on the wire removing static belt. Next, the rubber conveyor belt enters the cleaning pool for cooling, reducing the viscosity of the rubber conveyor belt. At the same time, the scraper scrapes the impurities on the rubber conveyor belt into the cleaning pool, realizing the secondary cleaning of the wire removing static belt, removing the impurities on the static belt more thoroughly, reducing the situation that the residual impurities on the static belt are remixed with the tobacco leaf flow, improving the impurity removal effect, and further improving the quality of the tobacco leaves;

[0025] 2. The first tensioning member and the second tensioning member facilitate the adjustment of the wire-removing static belt to be in a taut state. Adjust the moving seat so that the moving seat drives the fixing plate to move, and the fixing plate drives the pressing roller to move, thereby making the rubber conveyor belt taut and pressing against the wire-removing static belt, which facilitates the adjustment of the rubber conveyor belt and ensures that the rubber conveyor belt can stably remove impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present application.

[0027] Figure 2 is a schematic diagram of the structure of an embodiment of the present application for embodying the upper impurity removal space and the lower impurity removal space.

[0028] Figure 3 is Figure 1 an enlarged schematic diagram of part A in

[0029] Figure 4 is Figure 2 an enlarged schematic diagram of part B in

[0030] Figure 5 is Figure 2 an enlarged schematic diagram of part C in

[0031] DESCRIPTION OF THE REFERENCE NUMERALS: 1, housing; 11, feed inlet; 12, partition; 13, upper impurity removal space; 14, lower impurity removal space; 15, conveyor; 16, wire-removing static belt; 2, drive assembly; 21, driving roller; 22, driven roller; 3, first impurity removal assembly; 31, cleaning roller; 32, cleaning brush; 33, guide plate; 34, impurity collection box; 4, second impurity removal assembly; 41, pressing roller; 42, slide rail; 43, moving seat; 44, pressing bolt; 45, supporting roller; 46, rubber conveyor belt; 47, cleaning pool; 48, scraper; 49, heating module; 410, heating sheet; 5, first tensioning member; 51, swing rod; 52, first connecting shaft; 53, supporting wheel; 54, fixing plate; 541, arc-shaped groove; 55, limit screw; 56, limit nut; 6, second tensioning member; 61, adjusting seat; 62, fixing nut; 63, fixing screw; 64, rotating nut; 65, supporting spherical plain bearing; 66, supporting seat; 67, bracket; 68, supporting plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The following is a further detailed description of the present application in conjunction with the attached Figures 1-5 drawings.

[0033] An embodiment of the present application discloses a material static impurity removal machine.

[0034] As Figure 1 and Figure 2, the material static electricity removing machine includes a housing 1. A feed inlet 11 for receiving a tobacco leaf stream is provided at the top of the housing 1. A partition 12 is provided inside the housing 1. The partition 12 divides the interior of the housing 1 into an upper removing space 13 and a lower removing space 14. A conveyor 15, a wire removing static belt 16, a driving assembly 2, a first removing assembly 3 and a second removing assembly 4 are provided in both the upper removing space 13 and the lower removing space 14. The wire removing static belt 16 is an electrostatic electret sticky cloth and barbs are provided on its surface.

[0035] The discharge end of the conveyor 15 in the upper removing space 13 is communicated with the lower removing space 14. The conveyor 15 in the lower removing space 14 receives the tobacco discharged by the conveyor 15 in the upper removing space 13. The discharge end of the conveyor 15 in the lower removing space 14 is communicated with the discharge port of the second housing 1.

[0036] The driving assembly 2 is arranged above the conveyor 15. The driving assembly 2 includes a driving roller 21 and a driven roller 22. Both the driving roller 21 and the driven roller 22 are rotatably connected inside the housing 1. The wire removing static belt 16 is wound around the driving roller 21 and the driven roller 22. The driving roller 21 is driven by a motor. A first tightening member 5 for tightening the two bottom ends of the wire removing static belt 16 and a second tightening member 6 for tightening the inner side of the top of the wire removing static belt 16 are provided inside the housing 1.

[0037] As Figure 3 , the first tightening member 5 includes a swing rod 51. Swing rods 51 are rotatably connected to both ends of the rotating shafts of the driving roller 21 and both ends of the rotating shafts of the driven roller 22. The two swing rods 51 of the driving roller 21 are inclined downward towards the driven roller 22. The two swing rods 51 of the driven roller 22 are inclined downward towards the driving roller 21. The two swing rods 51 at the same end of the conveyor belt are commonly connected to a first connecting shaft 52. A plurality of supporting wheels 53 are rotatably connected to the first connecting shaft 52. The supporting wheels 53 are in contact with the inner side of the wire removing static belt 16. Fixing plates 54 are installed on both sides of the housing 1. There are four fixing plates 54. Two of the fixing plates 54 are respectively located on both sides of the driving roller 21, and the other two fixing plates 54 are respectively located on both sides of the driven roller 22. An arc-shaped groove 541 is formed on the fixing plate 54. The swing rod 51 is connected with a limiting screw 55. The limiting screw 55 passes through the arc-shaped groove 541. The limiting screw 55 is threadedly connected with a limiting nut 56. The limiting nut 56 is in contact with the fixing plate 54. The supporting wheels 53 tighten the two inner sides of the bottom of the wire removing static belt 16;

[0038] The second tightening member 6 includes two adjustment seats 61, and the two adjustment seats 61 are respectively located on both sides of the wire removal static electricity belt 16. A fixing nut 62 is fixed on the top of the adjustment seat 61, and the fixing nut 62 is threadedly connected to a fixing screw 63. The fixing screw 63 is arranged along the vertical direction, and the end of the fixing screw 63 away from the fixing nut 62 is fixedly connected to a rotating nut 64, and the rotating nut 64 is rotatably connected to a supporting joint bearing 65, and the supporting joint bearing 65 is connected to a supporting seat 66. The two supporting seats 66 are commonly connected to a bracket 67, and the bracket 67 is bolted to a support plate 68, and the support plate 68 is tightly pressed against the inner side of the top of the wire removal static electricity belt 16.

[0039] The driven roller 22 is located above the discharge of the conveyor 15, and the driving roller 21 is located above the feed of the conveyor 15. The first impurity removal component 3 is arranged on one side of the driven roller 22, and the second impurity removal component 4 is arranged on one side of the driving roller 21.

[0040] like Figure 2 and Figure 4 The first impurity removal assembly 3 includes a cleaning roller 31, which is rotatably connected to the fixed plates 54 on both sides of the driven roller 22. The cleaning roller 31 is provided with a cleaning brush 32 along its circumference, and the cleaning roller 31 is driven by a motor. A guide plate 33 is installed in the housing 1, and the guide plate 33 is located below the cleaning roller 31 and the driven roller 22. An impurity collection box 34 is installed in the housing 1, and the impurity collection box 34 is located below the cleaning roller 31. The bottom of the guide plate 33 is located at the upper opening of the impurity collection box 34.

[0041] like Figure 5 The second impurity removal component 4 includes a clamping roller 41, and slide rails 42 are installed on both sides of the shell 1. A movable seat 43 is slidably connected to the slide rail 42. The movable seat 43 is fixed to the fixed plate 54 on the same side thereof. A clamping bolt 44 is threadedly connected to the movable seat 43, and the clamping bolt 44 can press against the slide rail 42. The clamping roller 41 is rotatably connected to the fixed plates 54 on both sides of the active roller 21. The clamping roller 41 is driven by a motor. A supporting roller 45 is arranged in the second shell 1. A rubber conveyor belt 46 is wound around the supporting roller 45 and the clamping roller 41. The rubber conveyor belt 46 is tautly arranged on the clamping roller 41 and the supporting roller 45. The rubber conveyor belt 46 passes between the clamping roller 41 and the active roller 21, and the rubber conveyor belt 46 is in contact with the wire removal static belt 16. A cleaning pool 47 is provided in the second housing 1, a scraper 48 is provided in the cleaning pool 47, one end of the rubber conveyor belt 46 is immersed in the cooling cleaning liquid in the cleaning pool 47, and the scraper 48 abuts against the outer side of the rubber conveyor belt 46. A heating module 49 is installed in the housing 1, and the heating module 49 is connected to a heating sheet 410, and the heating sheet 410 is attached to the side of the rubber conveyor belt 46 away from the wire removal static belt 16.

[0042] The tobacco leaves flow is discharged from the feed port 11 of the housing 1 to the conveyor 15. The motor drives the active roller 21 to rotate, realizing the transmission of the driven roller 22 and the desilvering electrostatic belt 16. The conveying direction of the conveyor 15 is the same as the conveying direction of the desilvering electrostatic belt 16. The conveying speed of the conveyor 15 is greater than the conveying speed of the desilvering electrostatic belt 16. The friction between the electrostatic electret desilvering belt and the tobacco leaves generates static electricity, which further absorbs light debris such as fine hemp, string, and cocoons. The desilvering electrostatic belt 16 has a barb design that can hook and carry these debris.

[0043] The motor drives the cleaning roller 31 to rotate continuously. When the anti-static silk removal belt 16 passes between the driven roller 22 and the cleaning roller 31, the cleaning brush 32 removes impurities on the anti-static silk removal belt 16. The impurities fall on the guide plate 33 and roll into the impurity collection box 34, completing the first removal of impurities on the anti-static silk removal belt 16.

[0044] Next, the pressure roller 41 drives the rubber conveyor belt 46 to transmit, and the rubber conveyor belt 46 first passes through the heating plate 410 to be heated and softened, so that the viscosity of the rubber conveyor belt 46 is increased. When the wire-removing electrostatic belt 16 passes between the active roller 21 and the pressure roller 41, the rubber conveyor belt 46 adheres to the residual impurities on the wire-removing electrostatic belt 16, and then the rubber conveyor belt 46 enters the cleaning pool 47 for cooling, so that the viscosity of the rubber conveyor belt 46 is reduced. At the same time, the scraper 48 scrapes the impurities on the rubber conveyor belt 46 into the cleaning pool 47, so as to achieve secondary cleaning of the impurities on the wire-removing electrostatic belt 16. In this way, the impurities on the wire-removing electrostatic belt 16 are removed more thoroughly, and the situation where the residual impurities of the wire-removing electrostatic belt 16 are remixed with the tobacco leaf flow is reduced, the impurity removal effect is improved, and then the tobacco leaf quality is improved.

[0045] The implementation principle of the embodiment of the present application is as follows: the tobacco leaves are discharged from the feed port 11 of the housing 1 to the conveyor 15, and the friction between the electrostatic electret desilvering belt 16 and the tobacco leaves generates static electricity to absorb light debris such as fine hemp, string, and cocoons. The desilvering belt 16 has a barb design that can hook and carry these debris, and then the first desilvering component 3 removes the debris adhering to the cloth belt, realizing the first automatic cleaning;

[0046] After the first cleaning is completed, the wire removing static belt 16 continues to move, and the pressing roller 41 drives the rubber conveyor belt 46 to rotate. The rubber conveyor belt 46 first passes through the heating sheet 410 to be heated and softened, so as to improve the adhesiveness of the rubber conveyor belt 46. Then, the rubber conveyor belt 46 adheres to the residual impurities on the wire removing static belt 16. Next, the rubber conveyor belt 46 enters the cleaning pool 47 for cooling to reduce the adhesiveness of the rubber conveyor belt 46. At the same time, the scraper 48 scrapes the impurities on the rubber conveyor belt 46 into the cleaning pool 47, realizing the secondary cleaning of the wire removing static belt 16, removing the impurities on the wire removing static belt 16 more thoroughly, reducing the situation that the residual impurities on the wire removing static belt 16 are remixed with the tobacco leaf flow, improving the impurity removal effect, and further improving the quality of the tobacco leaves.

[0047] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An electrostatic impurity removal machine for materials, characterized in that: The invention comprises a shell (1), a conveyor (15) and a wire-removing electrostatic belt (16); a driving component (2) is arranged in the shell (1); the driving component (2) drives the wire-removing electrostatic belt (16) to move; the conveyor (15) is located below the wire-removing electrostatic belt (16); the conveyor (15) transports a flow of tobacco leaves and causes the flow of tobacco leaves to rub against the wire-removing electrostatic belt (16); a first impurity removal component (3) for performing a primary cleaning of the wire-removing electrostatic belt (16) and a second impurity removal component (4) for performing a secondary cleaning of the wire-removing electrostatic belt (16) are arranged in the shell (1); The second impurity removal component (4) comprises a pressure roller (41) and a support roller (45), wherein a rubber conveyor belt (46) is tightly wound around the pressure roller (41) and the support roller (45), and one side of the rubber conveyor belt (46) is in close contact with the wire removal electrostatic belt (16). A cleaning pool (47) is arranged in the shell (1), and the support roller (45) is located in the cleaning pool (47). One end of the rubber conveyor belt (46) is immersed in the cooling cleaning liquid in the cleaning pool (47). A scraper (48) is arranged in the cleaning pool (47), and the scraper (48) is in contact with the rubber conveyor belt (46). A heating module (49) is arranged in the second shell (1), and the heating module (49) is connected to a heating plate (410), and the heating plate (410) is in contact with a side of the rubber conveyor belt (46) away from the wire removal electrostatic belt (16). The pressure roller (41) is driven by a motor.

2. The electrostatic impurity removing machine for materials according to claim 1, wherein: The driving assembly (2) comprises a driving roller (21) and a driven roller (22), wherein the driving roller (21) and the driven roller (22) are both rotatably connected in the housing (1), the wire-removing electrostatic belt (16) is wound around the driving roller (21) and the driven roller (22), and the driving roller (21) is driven by a motor.

3. The electrostatic impurity removal machine for materials according to claim 2, wherein: The housing (1) is provided with a first tightening member (5) for tightening the two ends of the bottom of the wire-removing electrostatic belt (16) and a second tightening member (6) for tightening the inner side of the top of the wire-removing electrostatic belt (16).

4. The electrostatic impurity removal machine for materials according to claim 3, wherein: The first tightening member (5) includes a swing rod (51). Swing rods (51) are rotatably arranged at both ends of the rotating shafts of the driving roller (21) and both ends of the rotating shafts of the driven roller (22). The swing rods (51) at both ends of the driving roller (21) are jointly connected to a first connecting shaft (52), and the swing rods (51) at both ends of the driven roller (22) are also jointly connected to the first connecting shaft (52). A supporting wheel (53) is rotatably connected to the first connecting shaft (52), and the supporting wheel (53) abuts against the inner bottom of one end of the wire-removing static belt (16). Fixed plates (54) are arranged on both sides of the driving roller (21) and both sides of the driven roller (22). An arc-shaped groove (541) is formed in the fixed plate (54). The swing rod (51) is connected with a limit screw (55), the limit screw (55) passes through the arc-shaped groove (541), and a limit nut (56) is in threaded connection with the limit screw (55), and the limit nut (56) abuts against the fixed plate (54).

5. The electrostatic impurity removal machine for materials according to claim 3, characterized in that: The second tightening member (6) includes at least two adjusting seats (61). A fixing nut (62) is fixed on the adjusting seat (61), a fixing screw (63) is in threaded connection with the fixing nut (62), a rotating nut (64) is fixed on the fixing screw (63), a bracket (67) is rotatably connected to the rotating nut (64), a supporting plate (68) is installed on the bracket (67), and the supporting plate (68) abuts against the inner top of the wire-removing static belt (16).

6. The electrostatic impurity removal machine for materials according to claim 4, wherein: The fixed plates (54) on both sides of the driving roller (21) are both connected with moving seats (43). A slide rail (42) is arranged on the second housing (1), and the moving seat (43) is slidably connected to the slide rail (42). A pressing bolt (44) is arranged on the moving seat (43), and the pressing bolt (44) abuts against the slide rail (42). The pressing roller (41) is rotatably connected to the fixed plates (54) on both sides of the driving roller (21), the pressing roller (41) is driven by a motor, and the rubber conveyor belt (46) bypasses the pressing roller (41) and abuts against the wire-removing static belt (16).

7. The electrostatic impurity removal machine for materials according to claim 4, wherein: The first impurity removal component (3) is located on one side of the driven roller (22). The first impurity removal component (3) includes a cleaning roller (31), a cleaning brush (32) and a guide plate (33). The cleaning roller (31) is rotatably connected to two of the fixing plates (54) located on one side of the driven roller (22). The cleaning roller (31) is driven by a motor. The cleaning brush (32) is arranged on the circumferential surface of the cleaning roller (31). An impurity collection box (34) is installed below the cleaning roller (31). The fixing plate (54) is connected with a guide plate (33). The guide plate (33) is located between the impurity collection box (34) and the cleaning roller (31). The guide plate (33) is inclined. The top of the guide plate (33) is located below the driven roller (22). The bottom of the guide plate (33) is located above the impurity collection box (34).

8. The electrostatic impurity removal machine for materials according to claim 5, wherein: A partition plate (12) is arranged in the housing (1). The partition plate (12) divides the housing (1) into an upper impurity removal space (13) and a lower impurity removal space (14). A conveyor (15), a wire removal static belt (16), a driving component (2), a first tensioning component (5), a second tensioning component (6), a first impurity removal component (3) and a second impurity removal component (4) are arranged in both the upper impurity removal space (13) and the lower impurity removal space (14). The discharge port of the conveyor (15) located in the upper impurity removal space (13) is communicated with the lower impurity removal space (14). The conveyor (15) located in the lower impurity removal space (14) receives the tobacco discharged by the conveyor (15) located in the upper impurity removal space (13). The discharge port of the conveyor (15) located in the lower impurity removal space (14) is communicated with the discharge port of the housing (1).

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