A device for recovering and removing impurities from defective cigarettes and shredded tobacco

Abstract

The invention relates to a device for recovering and removing impurities from defective cigarette shreds, and belongs to the technical field of recovering defective cigarettes; the device comprises a paper shred separation mechanism, a climbing hoist, and a tobacco shred removal mechanism; the device cuts and crushes the defective cigarettes and rubs and crushes them in turn through a cutting roller group and a rubbing roller group in the paper shred separation mechanism, so that the tobacco shreds and non-tobacco impurities are in a state of being completely separated, and the paper shred separation effect is good, and the non-tobacco impurities with large particle sizes are filtered out by a vibrating screening machine, and the electrostatic roller with static electricity driven by a chain conveyor electrostatically adsorbs the small particle size shredded paper flower impurities mixed in the tobacco shreds during the process of conveying the tobacco shreds on the first mesh belt conveyor and the second mesh belt conveyor, thereby achieving the crushing of the defective cigarettes and the electrostatic impurity removal of the tobacco shreds, with good impurity removal effect, high impurity removal efficiency, high tobacco shred recovery rate, and high tobacco shred purity, and can achieve non-destructive impurity removal to avoid tobacco shreds from being broken and to avoid the reduction of tobacco shreds' moisture content, and can effectively improve the tobacco shreds of the defective cigarettes. Recycling value.

Description

Technical Field

[0001] The invention relates to a device for recovering and removing impurities from defective cigarette shreds, belonging to the technical field of defective cigarette recovery. Background Art

[0002] In the process of cigarette packaging, due to raw material defects, cigarette equipment failure, auxiliary material supply equipment failure and other reasons, some defective cigarettes with problems such as appearance defects, insufficient tobacco fullness and tightness, unqualified connection, and inconsistent draw resistance are often produced. According to production statistics, the average defective cigarettes produced in each box of cigarettes are about 0.2kg. In order to increase the utilization rate of tobacco and reduce tobacco loss, these defective cigarettes need to be recycled and processed, and the tobacco in the defective cigarettes must be separated from non-tobacco impurities such as filter rods, shaping paper, connection paper, cigarette paper, etc., and then the tobacco is mixed back into the packaging production line for recycling.

[0003] At present, the recycling of defective tobacco is usually done by cutting or beating the cigarettes to break them up so that the tobacco and non-tobacco impurities are separated. However, the pure cutting method will cause the cigarettes to be over-broken, resulting in serious tobacco fragmentation, and the recycled tobacco can only be downgraded for use in small quantities. The pure beating method will cause tobacco to remain in the cigarette paper cylinder, resulting in a low tobacco recovery rate, which results in tobacco waste. For the mixture of tobacco and non-tobacco impurities after the cigarettes are broken, the tobacco is currently mainly removed by manual picking, vibration screening or wind sorting. However, the manual picking and vibration screening methods are unreliable in terms of impurity removal quality, with a large number of residual small-size paper impurities, and manual picking is labor-intensive and has a low impurity removal efficiency. Wind sorting is prone to reduce the moisture content of the tobacco, affecting the recycling value of the tobacco. Summary of the invention

[0004] In order to overcome the problems existing in the background technology, the present invention proposes a device for recovering and removing impurities from defective cigarette shreds, which cuts and crushes the defective cigarettes and rubs and crushes them in turn through a cutting roller group and a rubbing roller group in a paper shred separation mechanism, so that the tobacco shreds and non-tobacco impurities can be completely separated, and the paper shred separation effect is good. The large-particle non-tobacco impurities are filtered out by a vibrating screening machine, and the electrostatic rollers with static electricity driven by a chain conveyor electrostatically adsorb the small-particle paper flower impurities mixed in the tobacco shreds during the process of conveying the tobacco shreds on the first mesh belt conveyor and the second mesh belt conveyor, thereby achieving the crushing of the defective cigarettes and the electrostatic impurity removal of the tobacco shreds, with good impurity removal effect, high impurity removal efficiency, high tobacco recovery rate, and high tobacco purity. It can achieve lossless impurity removal that avoids tobacco shreds from being broken and the reduction of tobacco moisture content, and the recovered tobacco does not need to be downgraded for use, which can effectively improve the recycling value of the defective cigarette shreds.

[0005] To solve the above problems, the present invention is implemented through the following technical solutions:

[0006] A defective cigarette shreds recycling and impurity removal device comprises a paper shreds separation mechanism, a climbing elevator, and a tobacco shreds impurity removal mechanism, wherein the paper shreds separation mechanism is used to crush cigarettes and preliminarily separate tobacco shreds, a climbing elevator is provided below the tobacco shreds discharge end of the paper shreds separation mechanism, a tobacco shreds impurity removal mechanism is provided below the discharge end of the climbing elevator, and the tobacco shreds impurity removal mechanism is used to remove residual impurities in tobacco shreds;

[0007] The paper shred separation mechanism includes a chassis, a lower hopper, a cutting roller group, a lower trough, a kneading roller group, and a vibrating screening machine. The chassis is a box structure with upper and lower ends opened. The lower hopper is installed above the chassis, and the cutting roller group, the lower trough, and the kneading roller group are installed in the chassis from top to bottom. A vibrating screening machine is arranged below the chassis. The vibration trough of the vibrating screening machine includes an upper vibration trough and a lower vibration trough. A screen is arranged between the upper vibration trough and the lower vibration trough. A debris discharge port is arranged at the end of the upper vibration trough. The end of the lower vibration trough is open and extends to the top of the feeding end of the climbing hoist.

[0008] The kneading roller group includes two kneading rollers horizontally installed inside the chassis, and pressure rods are horizontally arranged on the circumference of the two kneading rollers. The pressure rods are a plurality of semi-cylindrical protrusion structures protruding from the outer wall structure of the kneading rollers. Each of the pressure rods is arranged through the kneading rollers along the extension direction of the kneading rollers, and the pressure rods on the two kneading rollers are staggered.

[0009] The tobacco impurity removal mechanism comprises a chain conveyor, a connecting plate, an electrostatic roller, a first mesh belt conveyor, a second mesh belt conveyor, an electrostatic generator, and a negative pressure air duct, wherein a plurality of connecting plates are arranged in an array on the chain of the chain conveyor, and a freely rotatable electrostatic roller is fixedly installed on the connecting plate, a first mesh belt conveyor is arranged below the upper half of the chain conveyor, and a second mesh belt conveyor is arranged below the lower half of the chain conveyor, the electrostatic roller is suspended relative to the mesh belts of the first mesh belt conveyor and the second mesh belt conveyor, the feeding end of the second mesh belt conveyor is located below the discharging end of the first mesh belt conveyor, and the mesh diameters of the first mesh belt conveyor and the second mesh belt conveyor are slightly smaller than the width of the tobacco, an electrostatic generator for loading static electricity to the electrostatic roller is arranged at the left end of the chain conveyor, a negative pressure air duct is arranged outside the discharging end of the second mesh belt conveyor, and an air inlet of the negative pressure air duct faces the electrostatic roller;

[0010] A pressure wheel is fixedly installed on the right side of the negative pressure air duct through a bracket. The pressure wheel is made of soft material, and the height of the upper edge of the pressure wheel is higher than the height of the lower edge of the electrostatic roller.

[0011] Preferably, the cutting roller group includes two cutting rollers horizontally installed inside the chassis, the two cutting rollers are provided with cutting knives in a spiral shape, and the cutting knives on the two cutting rollers are arranged in a staggered manner.

[0012] Preferably, a plurality of first air knives are obliquely arranged below the first mesh belt conveyor, and the inclination direction of the first air knives is toward the feeding direction of the first mesh belt conveyor, and a plurality of second air knives are obliquely arranged below the second mesh belt conveyor, and the inclination direction of the second air knives is toward the feeding direction of the second mesh belt conveyor.

[0013] Preferably, a material guide trough is obliquely arranged between the feed end of the first mesh belt conveyor and the discharge end of the climbing elevator, a cover plate is arranged on the top of the frame of the first mesh belt conveyor and the second mesh belt conveyor, and a material guide box is arranged between the discharge end of the first mesh belt conveyor and the feed end of the second mesh belt conveyor, and the material guide box is provided with a through hole for facilitating the passage of the electrostatic roller.

[0014] The beneficial effects of the present invention are:

[0015] The present invention uses the cutting roller group and the rubbing roller group in the paper shred separation mechanism to cut and crush the defective cigarettes in turn and rub and crush them, so that the tobacco and non-tobacco impurities can be completely separated, the paper shred separation effect is good, and the large-particle non-tobacco impurities are filtered out by the vibrating screening machine. The chain conveyor drives the electrostatic roller with static electricity to electrostatically adsorb the small-particle paper flower impurities mixed in the tobacco in the process of conveying the tobacco by the first mesh belt conveyor and the second mesh belt conveyor, thereby realizing the crushing of the defective cigarettes and the electrostatic impurity removal of the tobacco, the impurity removal effect is good, the impurity removal efficiency is high, the tobacco recovery rate is high, the tobacco purity is high, and the non-destructive impurity removal that avoids the crushing of tobacco and the reduction of the moisture content of tobacco can be achieved. The recovered tobacco does not need to be downgraded for use, which can effectively improve the recovery and use value of the defective cigarettes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the structure of the paper shred separation mechanism of the present invention;

[0018] Figure 3 It is a schematic diagram of the structure of the tobacco impurity removal mechanism of the present invention;

[0019] Figure 4 A top view of the cutting roller assembly of the present invention;

[0020] Figure 5 It is a schematic diagram of the structure of the kneading roller group of the present invention;

[0021] Figure 6 It is a schematic diagram of the workflow of the present invention.

[0022] Description of the accompanying drawings: 1-paper shred separation mechanism, 2-climbing hoist, 3-tobacco shred removal mechanism, 4-gear set, 5-reduction motor, 11-chassis, 12-discharging hopper, 13-cutting roller set, 131-cutting roller, 132-cutting knife, 14-discharging trough, 15-kneading roller set, 151-kneading roller, 152-pressure rod, 16-vibration screening machine, 161-upper vibration trough, 162-lower vibration trough, 163-screen, 164-exhaust port, 31-chain conveyor, 32-connecting plate, 33-static roller, 34-first mesh belt conveyor, 35-second mesh belt conveyor, 36-static generator, 361-DC high voltage power supply, 362-static emission rod, 37-negative pressure air duct, 38-first air knife, 39-second air knife, 310-material guide trough, 311-cover plate, 312-material guide box, 313-bracket, 314-pressure wheel. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution, purpose achieved and effect of the present invention clear and easy to understand, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that technicians can understand.

[0024] It should be noted that in the description of the present invention, unless otherwise clearly defined or specified, the terms “installed”, “connected”, “connected”, “connected”, etc. should be understood in a broad sense, that is, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0025] In the present invention, if Figure 1-6 As shown, a device for recovering and removing impurities from defective cigarette shreds comprises a paper shred separation mechanism 1, a climbing elevator 2, and a tobacco shred removal mechanism 3. The paper shred separation mechanism 1 is used for crushing cigarettes and preliminarily separating tobacco shreds. A climbing elevator 2 is arranged below the tobacco discharging end of the paper shred separation mechanism 1, and a tobacco shred removal mechanism 3 is arranged below the discharging end of the climbing elevator 2. The tobacco shred removal mechanism 3 is used for removing residual impurities in the tobacco shreds, so that the defective cigarettes are crushed and the tobacco shreds are preliminarily separated by the paper shred separation mechanism 1, so that non-tobacco impurities such as filter rods with larger particle sizes, forming paper, tipping paper, and cigarette paper are separated from the tobacco shreds. Subsequently, a mixture of tobacco shreds and small-particle shredded paper impurities is transported to the tobacco shred removal mechanism 3 by the climbing elevator 2, and the small-particle shredded paper impurities remaining after the preliminarily separation are separated from the tobacco shreds by the tobacco shred removal mechanism 3, so as to further improve the purity of the tobacco shreds, so as to realize the tobacco recovery and impurity removal operation of the defective cigarettes.

[0026] In this embodiment, the paper shred separation mechanism 1 includes a chassis 11, a feed hopper 12, a cutting roller group 13, a feed trough 14, a kneading roller group 15, and a vibrating screening machine 16. The chassis 11 is a box structure with openings at both ends. The feed hopper 12 is installed above the chassis 11, and the cutting roller group 13, the feed trough 14, and the kneading roller group 15 are installed in the chassis 11 from top to bottom, so that the defective cigarettes put from the feed hopper 12 are cut and crushed by the cutting roller group 13, and then the cut and crushed cigarettes are introduced into the kneading roller group 15 through the feed trough 14, and the kneading roller group 15 is used to knead and crush the cigarette segments with incomplete paper shred separation, so that the tobacco and non-tobacco impurities are in a peeling state. A vibrating screening machine 16 is arranged below the chassis 11. The vibrating grooves of the vibrating screening machine 16 include an upper vibrating groove 161 and a lower vibrating groove 162. A screen 163 is arranged between the upper vibrating groove 161 and the lower vibrating groove 162. A debris discharge port 164 is arranged at the end of the upper vibrating groove 161. The end of the lower vibrating groove 162 is open and extends to above the feed end of the climbing elevator 2, so that the tobacco and non-tobacco impurities entering the vibrating groove of the vibrating screening machine 16 are screened by the screen 163. Non-tobacco impurities such as large-particle filter rods, molding paper, tipping paper, and cigarette paper are filtered by the screen 163 and remain in the upper vibrating groove 161 and are discharged from the debris discharge port 164. Small-particle tobacco and shredded paper impurities enter the lower vibrating groove 162 and are discharged to the feed end of the climbing elevator 2, and then are transported to the tobacco impurity removal mechanism 3 through the climbing elevator 2 for purification and impurity removal.

[0027] Preferably, the cutting roller group 13 includes two cutting rollers 131 horizontally installed inside the chassis 11, and the two cutting rollers 131 are spirally provided with cutting knives 132, and the cutting knives 132 on the two cutting rollers 131 are staggered, so that the defective cigarettes are cut and crushed by the spirally staggered cutting knives 132, so that the defective cigarettes can be formed into a structure with dispersed paper shreds or a small structure with part of the tobacco shreds wrapped by the cigarette paper cylinder, which can effectively avoid the situation where the defective cigarettes are repeatedly cut and the tobacco shreds are broken, and the tobacco shreds are destroyed; preferably, the kneading roller group 15 includes two kneading rollers 151 horizontally installed inside the chassis 11, and the two kneading rollers 151 are horizontally provided with pressure rods 152 on the circumference. 2 are several semi-cylindrical protrusions protruding from the outer wall of the kneading roller 151. Each of the pressure rods 152 is arranged along the extension direction of the kneading roller 151 and penetrates the kneading roller 151. The pressure rods 152 on the two kneading rollers 151 are arranged in a staggered manner, so that the cigarette segments with incomplete paper shred separation after cutting and crushing are kneaded and crushed by the staggered pressure rods 152 on the two kneading rollers 151, so that the tobacco shreds and non-tobacco impurities of the defective cigarettes can be completely separated, and the paper shred separation effect is good, so that the tobacco shreds can be completely separated from the non-tobacco impurities by the vibration screening machine 16 and the tobacco shred impurity removal mechanism 3 in the subsequent process, ensuring the tobacco shred impurity removal effect, and avoiding the occurrence of tobacco shreds being crushed, which can effectively improve the tobacco shred recovery rate, and the recovered tobacco shreds do not need to be downgraded for use. In specific applications, the cutting roller group 13 and the kneading roller group 15 can be synchronously driven and operated by the reduction motor 5 and the gear group 4.

[0028] In this embodiment, the tobacco impurity removal mechanism 3 includes a chain conveyor 31, a connecting plate 32, an electrostatic roller 33, a first mesh belt conveyor 34, a second mesh belt conveyor 35, an electrostatic generator 36, and a negative pressure air duct 37. A plurality of connecting plates 32 are respectively installed in an array on the two groups of chains of the chain conveyor 31, and a freely rotatable electrostatic roller 33 is fixedly installed on the connecting plate 32. A first mesh belt conveyor 34 is arranged below the upper half of the chain conveyor 31, and a second mesh belt conveyor 35 is arranged below the lower half of the chain conveyor 31. The electrostatic generator 36 and the negative pressure air duct 37 are provided. The electrostatic roller 33 is suspended relative to the mesh belts of the first mesh belt conveyor 34 and the second mesh belt conveyor 35, so that the electrostatic roller 33 on the chain conveyor 31 can fully contact the tobacco, so as to improve the impurity removal effect; the feeding end of the second mesh belt conveyor 35 is located below the discharging end of the first mesh belt conveyor 34, so that the tobacco on the first mesh belt conveyor 34 can be received and conveyed by the second mesh belt conveyor 35; the mesh diameters of the first mesh belt conveyor 34 and the second mesh belt conveyor 35 are slightly smaller than the width of the tobacco, so as to prevent the tobacco from passing through the first mesh belt conveyor 34 and the second mesh belt conveyor 35 are scattered; the left end of the chain conveyor 31 is provided with an electrostatic generator 36, which is used to load static electricity to the electrostatic roller 33, wherein the electrostatic generator 36 includes a DC high-voltage power supply 361 and an electrostatic emission rod 362, the DC high-voltage power supply 361 provides negative high voltage or positive high voltage to the electrostatic emission rod 362, and the electrostatic emission rod 362 emits negative ions or positive ions to make the electrostatic roller 33 carry static electricity, so that the electrostatic roller 33 can adsorb small-sized shredded paper impurities mixed in the tobacco, so as to achieve purification and removal of the tobacco. In specific applications, the outer layer of the electrostatic roller 33 can be made of materials with relatively high resistance values, such as modified plastics, hard silicone, and hard rubber, so that the electrostatic roller 33 can generate static electricity and maintain the electrostatic state; a negative pressure air duct 37 is arranged on the outer side of the discharge end of the second mesh belt conveyor 35, and is located below the electrostatic roller 33. The air inlet of the negative pressure air duct 37 faces the electrostatic roller 33, and the negative pressure air duct 37 is connected to the negative pressure dust removal pipeline system of the workshop, so that the impurities of broken paper flowers adsorbed on the electrostatic roller 33 can be sucked away and discharged through the negative pressure air duct 37. By conveying the tobacco shreds twice through the first mesh belt conveyor 34 and the second mesh belt conveyor 35 arranged up and down, the electrostatic roller 33 can electrostatically adsorb and remove impurities from the tobacco shreds twice as the chain conveyor 31 runs, thereby ensuring a reliable impurity removal effect and guaranteeing the purity of the tobacco shreds; the electrostatic roller 33 removes impurities such as broken paper flowers in the tobacco shreds through electrostatic adsorption, thereby avoiding a decrease in the moisture content of the tobacco shreds, achieving non-destructive impurity removal of the tobacco shreds, and the recovered tobacco shreds do not need to be downgraded for use, thereby effectively improving the recycling value of the tobacco shreds of defective cigarettes.

[0029] Preferably, a plurality of first air knives 38 are obliquely arranged below the first mesh belt conveyor 34, and the oblique direction of the first air knives 38 is toward the feeding direction of the first mesh belt conveyor 34, and a plurality of second air knives 39 are obliquely arranged below the second mesh belt conveyor 35, and the oblique direction of the second air knives 39 is toward the feeding direction of the second mesh belt conveyor 35. The mixture of shredded tobacco and shredded paper flower impurities passing through the first mesh belt conveyor 34 and the second mesh belt conveyor 35 is sprayed by the first air knives 38 and the second air knives 39, so that the mixture can be fully contacted with the electrostatic roller 33 while ensuring that the moisture content of the shredded tobacco changes little, thereby further improving the adsorption and impurity removal effect of the electrostatic roller 33 on the shredded paper flower impurities.

[0030] Preferably, a guide trough 310 is obliquely arranged between the feed end of the first mesh belt conveyor 34 and the discharge end of the climbing elevator 2, so that the tobacco transported by the climbing elevator 2 can be introduced into the feed end of the first mesh belt conveyor 34 through the guide trough 310; a cover plate 311 is arranged on the top of the frame of the first mesh belt conveyor 34 and the second mesh belt conveyor 35, so that the tobacco blown up by the first wind knife 38 and the second wind knife 39 can be limited by the frame and cover plate 311 of the first mesh belt conveyor 34 and the second mesh belt conveyor 35 to prevent the tobacco from scattering; a guide box 312 is arranged between the discharge end of the first mesh belt conveyor 34 and the feed end of the second mesh belt conveyor 35, and a through hole is arranged on the guide box 312 for the electrostatic roller 33 to pass through, so that the tobacco discharged from the discharge end of the first mesh belt conveyor 34 can be introduced into the feed end of the second mesh belt conveyor 35 through the guide box 312.

[0031] Preferably, a pressure wheel 314 is fixedly installed on the right side of the negative pressure air duct 37 through a bracket 313. The pressure wheel 314 is made of soft material that is easily deformed, such as plastic or rubber, and the height of the upper edge of the pressure wheel 314 is higher than the height of the lower edge of the electrostatic roller 33. Therefore, the electrostatic rollers 33 can be rotated by the pressure of the pressure wheel 314 under the transportation of the chain conveyor 31, so that the negative pressure air duct 37 can fully absorb the impurities of shredded paper adsorbed on the surface of the rotating electrostatic roller 33, thereby ensuring the subsequent impurity adsorption capacity of the electrostatic roller 33.

[0032] Working process of the present invention:

[0033] When defective cigarettes need to be recovered, they are put into the lower hopper 12, and the cutting roller group 13 rotates to cut and crush the defective cigarettes. The cut and crushed cigarettes are introduced into the kneading roller group 15 through the lower chute 14, and the kneading roller group 15 rotates to knead and crush the defective cigarettes. The mixture of tobacco shreds and non-tobacco impurities after kneading and crushing enters the vibration screening machine 16 for screening, and the large-sized non-tobacco impurities are filtered by the screen 163 and discharged from the impurity discharge port 164 at the end of the upper vibration trough 161. The small-sized tobacco shreds and shredded paper impurities enter the lower vibration trough 162 and are arranged side by side to the climbing elevator 2 to be lifted and transported to the first mesh belt conveyor 34, and then discharged from the first mesh belt conveyor 34 to the second mesh belt conveyor 35. During the process of conveying tobacco shreds, the tobacco shreds and paper scraps impurities are blown up by the first wind knife 38 and the second wind knife 39 so as to make them fully contact with the electrostatic roller 33, and the electrostatic generator 36 sequentially loads static electricity on each electrostatic roller 33, so that the electrostatic roller 33 passes through the tobacco shreds and paper scraps impurities as the chain conveyor 31 runs, so that the electrostatic roller 33 electrostatically adsorbs the small-sized paper scraps impurities mixed in the tobacco shreds twice when passing through the first mesh belt conveyor 34 and the second mesh belt conveyor 35, and then the electrostatic roller 33 adsorbed with the paper scraps impurities is rotated by the pressing action of the pressure wheel 314, and finally the paper scraps impurities adsorbed on the electrostatic roller 33 are sucked away and discharged by the negative pressure air duct 37, thereby achieving the crushing of defective cigarettes and the removal of tobacco shreds.

[0034] The present invention uses the cutting roller group and the rubbing roller group in the paper shred separation mechanism to cut and crush the defective cigarettes in turn and rub and crush them, so that the tobacco and non-tobacco impurities can be completely separated, the paper shred separation effect is good, and the large-particle non-tobacco impurities are filtered out by the vibrating screening machine. The chain conveyor drives the electrostatic roller with static electricity to electrostatically adsorb the small-particle paper flower impurities mixed in the tobacco in the process of conveying the tobacco by the first mesh belt conveyor and the second mesh belt conveyor, thereby realizing the crushing of the defective cigarettes and the electrostatic impurity removal of the tobacco, the impurity removal effect is good, the impurity removal efficiency is high, the tobacco recovery rate is high, the tobacco purity is high, and the non-destructive impurity removal that avoids the crushing of tobacco and the reduction of the moisture content of tobacco can be achieved. The recovered tobacco does not need to be downgraded for use, which can effectively improve the recovery and use value of the defective cigarettes.

[0035] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A device for recovering and removing impurities from defective cigarette shreds, characterized in that: The defective cigarette shreds recovery and impurity removal device comprises a paper shreds separation mechanism (1), a climbing elevator (2), and a tobacco shreds impurity removal mechanism (3). The paper shreds separation mechanism (1) is used to break up cigarettes and preliminarily separate tobacco shreds. A climbing elevator (2) is arranged below the tobacco shreds discharge end of the paper shreds separation mechanism (1). A tobacco shreds impurity removal mechanism (3) is arranged below the discharge end of the climbing elevator (2). The tobacco shreds impurity removal mechanism (3) is used to remove residual impurities in tobacco shreds. The paper shred separation mechanism (1) comprises a machine case (11), a feed hopper (12), a cutting roller group (13), a feed trough (14), a kneading roller group (15), and a vibrating screening machine (16); the machine case (11) is a box structure with openings at both ends; a feed hopper (12) is installed above the machine case (11); and the cutting roller group (13), the feed trough (14), the kneading roller group (15), and a vibrating screening machine (16) are installed in sequence from top to bottom inside the machine case (11). 5), a vibrating screening machine (16) is arranged below the chassis (11), the vibrating groove of the vibrating screening machine (16) comprises an upper vibrating groove (161) and a lower vibrating groove (162), a screen (163) is arranged between the upper vibrating groove (161) and the lower vibrating groove (162), a debris discharge port (164) is arranged at the end of the upper vibrating groove (161), and the end of the lower vibrating groove (162) is open and extends to above the feeding end of the climbing hoist (2); The kneading roller group (15) comprises two kneading rollers (151) installed horizontally inside the chassis (11), and pressure rods (152) are arranged horizontally on the circumference of the two kneading rollers (151), and the pressure rods (152) are a plurality of semi-cylindrical protrusion structures protruding from the outer wall structure of the kneading rollers (151). Each of the pressure rods (152) is arranged to pass through the kneading rollers (151) along the extension direction of the kneading rollers (151), and the pressure rods (152) on the two kneading rollers (151) are arranged in a staggered manner; The tobacco impurity removal mechanism (3) comprises a chain conveyor (31), a connecting plate (32), an electrostatic roller (33), a first mesh belt conveyor (34), a second mesh belt conveyor (35), an electrostatic generator (36), and a negative pressure air duct (37). A plurality of connecting plates (32) are arranged in an array on the chain of the chain conveyor (31), and a freely rotatable electrostatic roller (33) is fixedly mounted on the connecting plate (32). The first mesh belt conveyor (34) is arranged below the upper half of the chain conveyor (31), and the second mesh belt conveyor (35) is arranged below the lower half of the chain conveyor (31). The roller (33) is suspended relative to the mesh belts of the first mesh belt conveyor (34) and the second mesh belt conveyor (35); the feeding end of the second mesh belt conveyor (35) is located below the discharging end of the first mesh belt conveyor (34); and the mesh diameters of the first mesh belt conveyor (34) and the second mesh belt conveyor (35) are slightly smaller than the width of the tobacco shreds; an electrostatic generator (36) for applying static electricity to the electrostatic roller (33) is provided at the left end of the chain conveyor (31); a negative pressure air duct (37) is provided on the outer side of the discharging end of the second mesh belt conveyor (35); and the air inlet of the negative pressure air duct (37) faces the electrostatic roller (33); A pressure wheel (314) is fixedly mounted on the right side of the negative pressure air duct (37) via a bracket (313); the pressure wheel (314) is made of a soft material, and the height of the upper edge of the pressure wheel (314) is higher than the height of the lower edge of the electrostatic roller (33).

2. The device for recovering and removing impurities from defective cigarette shreds according to claim 1, characterized in that: The cutting roller group (13) comprises two cutting rollers (131) installed horizontally inside the chassis (11), the two cutting rollers (131) are provided with cutting knives (132) in a spiral shape, and the cutting knives (132) on the two cutting rollers (131) are arranged in a staggered manner.

3. The device for recovering and removing impurities from defective cigarette shreds according to claim 1, characterized in that: A plurality of first air knives (38) are obliquely arranged below the first mesh belt conveyor (34), and the inclination direction of the first air knives (38) is toward the feeding direction of the first mesh belt conveyor (34); and a plurality of second air knives (39) are obliquely arranged below the second mesh belt conveyor (35), and the inclination direction of the second air knives (39) is toward the feeding direction of the second mesh belt conveyor (35).

4. A device for recovering and removing impurities from defective cigarette shreds according to claim 1 or 3, characterized in that: A material guide trough (310) is obliquely arranged between the feed end of the first mesh belt conveyor (34) and the discharge end of the climbing elevator (2); a cover plate (311) is arranged on the top of the frame of the first mesh belt conveyor (34) and the second mesh belt conveyor (35); and a material guide box (312) is arranged between the discharge end of the first mesh belt conveyor (34) and the feed end of the second mesh belt conveyor (35); and a through hole is arranged on the material guide box (312) for facilitating the passage of the electrostatic roller (33).

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