A tobacco leaf cleaning and impurity removal device

Abstract

The invention discloses a tobacco leaf selection and impurity removal device, which belongs to the field of tobacco leaf impurity removal, and comprises a rotating cylinder, wherein a rotating tube is arranged inside the rotating cylinder, a spiral plate is wound around the outer circumference of the rotating tube, the side of the spiral plate is fixedly connected to the inner wall of the rotating cylinder, the side wall of the rotating cylinder is penetrated with uniformly distributed filter holes, the right end of the rotating cylinder is rotatably connected to a feed pipe, the upper end of the feed pipe is fixedly connected to a conical cover, the side surface of the rotating cylinder is fixedly connected to uniformly distributed teeth near the right end, the lower end of the teeth is meshedly connected to a gear, and the right end side surface of the gear is fixedly connected to a motor. Impurities in the tobacco leaves can be automatically discharged from the filter holes when the tobacco leaves are rolling, and the tobacco leaves inside the rotating cylinder will move along the path of the spiral plate when the rotating cylinder is rotating, which increases the time the tobacco leaves stay in the rotating cylinder, thereby facilitating the full flipping of the tobacco leaves, thereby improving the impurity removal effect of the tobacco leaves.

Description

Technical Field

[0001] The invention relates to the field of tobacco leaf impurity removal, and more specifically to a tobacco leaf fine impurity removal device. Background Art

[0002] Tobacco leaves, tobacco stems and other raw materials from tobacco-growing areas need to go through multiple manual or automated processes such as harvesting, airing, drying, and stem-leaf separation. During the collection and processing of tobacco leaves, a lot of impurities fall into the tobacco leaves. The impurities mainly include small wood chips, plastics, small stones, feathers, soil, metal chips, etc. If these impurities are not processed, they will seriously affect the product quality of cigarettes after the tobacco leaves are made into cigarettes.

[0003] A Chinese patent with application number: 202011146668.9 discloses an online leaf selection and impurity removal device for high-end cigarettes. In the public document, an electrostatic adsorption plate is used to adsorb non-metallic substances in tobacco leaves, and then a magnetic suction part is used to absorb metals in tobacco leaves. Although the impurity removal function can be achieved, after a large amount of impurities are adsorbed on the surface of the electrostatic adsorption plate and the magnetic suction part, a thick layer of impurities will accumulate on the surface of the electrostatic adsorption plate and the magnetic suction part, causing the impurity removal ability of the electrostatic adsorption plate and the magnetic suction part to be weakened. It is necessary to clean the impurities on the surface of the electrostatic adsorption plate and the magnetic suction part in time. Frequent cleaning of the electrostatic adsorption plate and the magnetic suction part makes the process cumbersome. If they are not cleaned in time, the tobacco leaf impurity removal effect will not be thorough, which will ultimately affect the product quality of cigarettes.

[0004] A tobacco leaf cleaning and impurity removal device is provided. Summary of the invention

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a tobacco leaf selection and impurity removal device, which can realize that impurities in the tobacco leaves are automatically discharged from the filter holes when the tobacco leaves are tumbling. When the rotating cylinder rotates, the tobacco leaves inside will move along the path of the spiral plate, thereby increasing the time that the tobacco leaves stay in the rotating cylinder, thereby facilitating the full flipping of the tobacco leaves, thereby improving the impurity removal effect of the tobacco leaves.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A tobacco leaf selecting and impurity removing device comprises a rotating drum, a rotating tube is arranged inside the rotating drum, a spiral plate is wound on the outer circumferential surface of the rotating tube, the side edge of the spiral plate is fixedly connected to the inner wall of the rotating drum, and the side wall of the rotating drum is penetrated by evenly distributed filtering holes, the right end of the rotating drum is rotatably connected to a feed pipe, the upper end of the feed pipe is fixedly connected to a conical cover, the side surface of the rotating drum is fixedly connected to evenly distributed teeth near the right end, the lower end of the teeth is meshingly connected to a gear, the right end side surface of the gear is fixedly connected to a motor, a collecting mechanism is arranged outside the rotating drum, the collecting mechanism is used to collect impurities flowing out of the filtering holes, the side surface of the conical cover is fixedly connected to a fixing rod, one end of the fixing rod is connected to the collecting mechanism, the lower surface of the motor is fixedly connected to a support plate, and one end of the support plate is connected to the collecting mechanism.

[0008] Furthermore, the side wall of the rotating tube is penetrated with evenly distributed exhaust holes, the right end of the rotating tube is rotatably connected to an air guide pipe, one end of the air guide pipe is fixedly penetrated through the feed pipe and extended to the outside, and a fan is installed at the lower end opening of the air guide pipe.

[0009] Furthermore, a second air blocking plate is fixedly connected to the inner wall of the rotating tube near the air guide tube, a sliding groove is provided on one outer surface of the second air blocking plate, a sliding block is slidably connected inside the sliding groove, and the first air blocking plate is fixedly connected to one outer surface of the sliding block.

[0010] Furthermore, the lower end of the air guide pipe is fixedly connected to an air inlet cover, and the lower end opening of the air inlet cover is arranged above the motor.

[0011] Furthermore, a fixed shell is rotatably connected to the outside of the rotating cylinder, the filter hole is wrapped inside the fixed shell, a debris discharge pipe is fixedly connected to the lower left end of the fixed shell, a collecting bucket is provided at the lower end of the debris discharge pipe, and a base is fixedly connected to the lower end of the fixed shell. The lower end of the fixed shell is located at the right side and fixedly connected to the support plate, and the upper end of the fixed shell is located at the right side and fixedly connected to the conical cover.

[0012] Furthermore, the collecting bucket is fixedly connected to the lower end of the impurity discharge pipe via threads, and the collecting bucket is made of transparent material.

[0013] Furthermore, evenly distributed ultraviolet lamp beads are fixedly connected to the inner wall of the rotating cylinder, and a connecting mechanism is arranged on the outside of the right end of the rotating cylinder, and the connecting mechanism is used to ensure that the ultraviolet lamp beads can be powered when the rotating cylinder rotates.

[0014] Furthermore, a second conductive ring is fixedly connected to the outer circumferential surface of the rotating cylinder near the right end, and a first conductive ring is fixedly connected to the outer circumferential surface of the rotating cylinder near the second conductive ring. The first conductive ring and the second conductive ring are electrically connected to the corresponding electrodes of the ultraviolet lamp beads. The outer circumferential surfaces of the first conductive ring and the second conductive ring are slidably connected to carbon brushes, one end of the carbon brush is fixedly connected to the fixed shell, and the carbon brush is electrically connected to the corresponding electrodes of the power supply.

[0015] Furthermore, a heating wire is installed inside the air duct near the fan.

[0016] Furthermore, a filter screen is fixedly connected to the outer surface of the rotating tube at the exhaust hole.

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

[0018] (1) This scheme realizes the continuous turning of the tobacco leaves inside by rotating the rotating drum. The impurities in the tobacco leaves fall from the filter holes due to their own gravity to achieve impurity removal. The tobacco leaves in the rotating drum will move along the path of the spiral plate, which increases the time the tobacco leaves stay in the rotating drum, thereby facilitating the full turning of the tobacco leaves and improving the impurity removal effect of the tobacco leaves.

[0019] (2) This solution discharges air through the exhaust holes. The flowing air will blow away the dust adsorbed on the surface of the tobacco leaves. The continuous tumbling of the tobacco leaves facilitates full contact between the air flow and the surface of the tobacco leaves, thereby facilitating the air flow to completely blow away the dust on the surface of the tobacco leaves.

[0020] (3) This solution uses intermittent exhaust at the exhaust holes to ensure that the dust on the surface of the tobacco leaves can be blown away when there is a strong airflow, and the tobacco leaves can move along the path of the spiral plate when there is no airflow.

[0021] (4) This solution uses a fixed shell to collect impurities discharged from the filter hole. The discharged impurities will eventually fall into the collection bucket, realizing automatic collection of impurities and freeing up manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional view of the overall structure of the present invention;

[0023] Figure 2 is a cross-sectional view of the present invention;

[0024] Figure 3 This is a diagram showing the interior of the air duct of the present invention;

[0025] Figure 4 This is a diagram showing the interior of the rotating tube of the present invention;

[0026] Figure 5 This is a back view of the second air barrier of the present invention;

[0027] Figure 6 It is a display diagram of the right end of the fixed shell of the present invention.

[0028] Description of the numbers in the figure:

[0029] 1. Rotating cylinder; 2. Filter hole; 3. Rotating tube; 4. Spiral plate; 5. Feeding tube; 6. Conical cover; 7. Fixed rod; 8. Motor; 9. Gear; 10. Teeth; 11. Air inlet cover; 12. Air duct; 13. Fan; 14. Heating wire; 15. Fixed shell; 16. Exhaust pipe; 17. Collecting bucket; 18. Base; 19. Support plate; 20. First air blocking plate; 21. Sliding block; 22. Second air blocking plate; 23. Slide; 24. Exhaust hole; 25. Filter; 26. Ultraviolet lamp beads; 27. First conductive ring; 28. Second conductive ring; 29. ​​Carbon brush. DETAILED DESCRIPTION

[0030] 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; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0031] Embodiment 1:

[0032] See also Figure 1 to Figure 2 A tobacco leaf selection and impurity removal device comprises a rotating cylinder 1, a rotating tube 3 is arranged inside the rotating cylinder 1, a spiral plate 4 is wound around the outer circumferential surface of the rotating tube 3, and the side edge of the spiral plate 4 is fixedly connected to the inner wall of the rotating cylinder 1, and the side wall of the rotating cylinder 1 is penetrated with uniformly distributed filter holes 2, a feed pipe 5 is rotatably connected to the right end of the rotating cylinder 1, and a conical cover 6 is fixedly connected to the upper end of the feed pipe 5, and uniformly distributed teeth 10 are fixedly connected to the side surface of the rotating cylinder 1 near the right end, and a gear 9 is meshed and connected at the lower end of the tooth 10, and a motor 8 is fixedly connected to the right end side surface of the gear 9, and a collecting mechanism is arranged outside the rotating cylinder 1, and the collecting mechanism is used to collect impurities flowing out of the filter holes 2, a fixing rod 7 is fixedly connected to the side surface of the conical cover 6, and one end of the fixing rod 7 is connected to the collecting mechanism, and a support plate 19 is fixedly connected to the lower surface of the motor 8, and one end of the support plate 19 is connected to the collecting mechanism.

[0033] By adopting the above technical scheme, the tobacco leaves are first poured in from the conical cover 6. The tobacco leaves will fall into the feed pipe 5 due to their own gravity and slide into the rotating cylinder 1 along the inner wall of the feed pipe 5. The power of the motor 8 is turned on, and the motor 8 will drive the gear 9 to rotate. The gear 9 drives the meshing teeth 10 when rotating, and finally drives the rotating cylinder 1 to rotate. When the rotating cylinder 1 rotates, it will drive the spiral plate 4 and the rotating tube 3 to rotate together. When the rotating cylinder 1 rotates, the tobacco leaves will continue to roll in the rotating cylinder 1. At this time, the impurities in the tobacco leaves fall from the filter holes 2 due to their own gravity. The rotating cylinder 1 and the spiral plate 4 are both inclined downward. The tobacco leaves will move obliquely downward along the space channel formed by the spiral plate 4 and the rotating cylinder 1, and at the same time, they will continue to flip, which increases the time the tobacco leaves stay in the rotating cylinder 1, thereby facilitating the full flipping of the tobacco leaves, thereby improving the impurity removal effect of the tobacco leaves, and the tobacco leaves with impurities removed are finally discharged from the opening of the rotating cylinder 1.

[0034] like Figures 2 to 5 As shown, the side wall of the rotating tube 3 is penetrated with evenly distributed exhaust holes 24, the right end of the rotating tube 3 is rotatably connected to the air guide pipe 12, one end of the air guide pipe 12 is fixedly penetrated through the feed pipe 5 and extended to the outside, and a fan 13 is installed at the lower end opening of the air guide pipe 12.

[0035] When tobacco leaves are harvested and dried, a layer of dust will be adsorbed on the surface of the tobacco leaves. It is impossible to separate the dust on the surface of the tobacco leaves by only using the gravity of the impurities themselves to separate the tobacco leaves from the impurities. The present invention turns on the fan 13 when the rotating drum 1 rotates to separate the impurities in the tobacco leaves. The fan 13 will blow air into the air guide 12. The air will enter the rotating tube 3 along the air guide 12 and finally blow out from the exhaust hole 24. The blown airflow will continuously flow to the tumbling tobacco leaves, and the flowing airflow will blow away the dust adsorbed on the surface of the tobacco leaves, and finally be discharged from the filter hole 2. The continuous tumbling of the tobacco leaves facilitates the full contact between the airflow and the surface of the tobacco leaves, thereby facilitating the airflow to completely clean the dust on the surface of the tobacco leaves.

[0036] like Figures 2 to 5 As shown, a second air baffle plate 22 is fixedly connected to the inner wall of the rotating tube 3 near the air guide duct 12, a slide groove 23 is provided on one side outer surface of the second air baffle plate 22, a slider 21 is slidably connected inside the slide groove 23, and a first air baffle plate 20 is fixedly connected to one side outer surface of the slider 21.

[0037] The strength of the airflow blown out by the fan 13 affects the strength of the airflow blown out from the exhaust hole 24. If the airflow blown out of the exhaust hole 24 is too strong, although the airflow can blow away the dust on the surface of the tobacco leaves, the strong airflow will also blow away the tobacco leaves. Under the blowing of the airflow, the tobacco leaves will stick to the inner wall of the rotating cylinder 1, making it impossible for the tobacco leaves to move along the track of the spiral plate 4. If the airflow blown out of the exhaust hole 24 is too weak, although it cannot blow away the tobacco leaves, the airflow cannot completely blow away the dust on the surface of the tobacco leaves. When the rotating tube 3 rotates, the present invention will drive the first baffle plate 20 and the second baffle plate 22 to rotate together. Initially, the second baffle plate 22 is at the lower end of the inner wall of the rotating tube 3, and the first baffle plate 20 overlaps with the second baffle plate 22. At this time, the airflow inside the rotating tube 3 can flow from above the second baffle plate 22. When the lower end of the tube 3 rotates to the upper end, the first air blocking plate 20 will drive the slider 21 to slide downward along the slide groove 23 due to its own gravity, and finally the first air blocking plate 20 presses against the inner wall of the rotating tube 3 to close the opening of the second air blocking plate 22, thereby preventing air flow in the rotating tube 3. When the second air blocking plate 22 rotates to the initial position, the first air blocking plate 20 rotates from the bottom of the second air blocking plate 22 to the top, and the first air blocking plate 20 will slide downward due to its own gravity. Finally, the first air blocking plate 20 overlaps with the second air blocking plate 22, and the top of the second air blocking plate 22 is opened. By intermittently opening the opening of the second air blocking plate 22, intermittent airflow is generated at the exhaust hole 24, ensuring that dust on the surface of the tobacco leaves can be blown away when there is strong airflow, and the tobacco leaves can move along the path of the spiral plate 4 when there is no airflow.

[0038] like Figure 2 As shown, the lower end of the air duct 12 is fixedly connected with an air inlet hood 11. The air intake volume of the air duct 12 is increased by installing the air inlet hood 11. The lower end opening of the air inlet hood 11 is set above the motor 8. The air inlet hood 11 will draw away the air around the motor 8 when taking in air, and the flowing air will accelerate the heat dissipation of the motor 8.

[0039] like Figure 1 , Figure 2 As shown, the outside of the rotating cylinder 1 is rotatably connected to a fixed shell 15, and the filter hole 2 is wrapped inside the fixed shell 15. Impurities running out of the filter hole 2 will fall to the inner wall of the fixed shell 15 and slide downward along the slope of the inner wall of the fixed shell 15. The lower left end of the fixed shell 15 is fixedly connected to a discharge pipe 16, and the impurities on the inner wall of the fixed shell 15 are finally discharged from the discharge pipe 16. A collecting bucket 17 is provided at the lower end of the discharge pipe 16, and the discharged impurities will finally fall into the collecting bucket 17, thereby realizing automatic collection of impurities. The lower end of the fixed shell 15 is fixedly connected to a base 18, and the base 18 is used to support the fixed shell 15. The lower end of the fixed shell 15 is located at the right position and is fixedly connected to the support plate 19, and the upper end of the fixed shell 15 is located at the right position and is fixedly connected to the conical cover 6.

[0040] like Figure 1 As shown, the collecting barrel 17 is fixedly connected to the lower end of the impurity discharge pipe 16 by means of threads. When the collecting barrel 17 is full of impurities, the collecting barrel 17 can be removed by twisting the collecting barrel 17 to dump the impurities. After dumping the internal impurities, the collecting barrel 17 can be installed in the initial position. The collecting barrel 17 is made of transparent material. By observing the collecting barrel 17, it is possible to know how much impurities are collected inside, which is simple and convenient.

[0041] like Figure 2 As shown, the inner wall of the rotating cylinder 1 is fixedly connected with uniformly distributed ultraviolet lamp beads 26, and the tobacco leaves are sterilized by irradiating the tobacco leaves with the ultraviolet lamp beads 26, so as to avoid the presence of mold in the tobacco leaves causing a large number of mildew spots when the tobacco leaves are stored. A connecting mechanism is arranged on the outside of the right end of the rotating cylinder 1, and the connecting mechanism is used to ensure that the ultraviolet lamp beads 26 can be powered when the rotating cylinder 1 rotates.

[0042] like Figure 1 , Figure 6 As shown, a second conductive ring 28 is fixedly connected to the outer circumferential surface of the rotating cylinder 1 near the right end, and a first conductive ring 27 is fixedly connected to the outer circumferential surface of the rotating cylinder 1 near the second conductive ring 28. Both the first conductive ring 27 and the second conductive ring 28 are electrically connected to the electrodes of the ultraviolet lamp bead 26. The outer circumferential surfaces of the first conductive ring 27 and the second conductive ring 28 are slidably connected with a carbon brush 29. One end of the carbon brush 29 is fixedly connected to the fixed shell 15. The carbon brush 29 is electrically connected to the electrodes of the power supply. The current in the power supply is transmitted to the first conductive ring 27 and the second conductive ring 28 through the carbon brush 29. The first conductive ring 27 and the second conductive ring 28 then transmit the current to the ultraviolet lamp bead 26 to power the ultraviolet lamp bead 26. The carbon brush 29 in the present invention can also be replaced by a conductive metal sheet. In addition, the first conductive ring 27 and the second conductive ring 28 are made of conductive metal sheets and are made into a ring shape and fixed on the surface of the rotating cylinder 1.

[0043] like Figure 3 As shown, a heating wire 14 is installed inside the air duct 12 near the fan 13. The heating wire 14 is energized to heat the passing airflow, and the heated air is discharged from the exhaust hole 24. The discharged hot air flow can dry the tobacco leaves to avoid excessive moisture in the tobacco leaves, which affects the storage of the tobacco leaves and the quality of cigarette making.

[0044] like Figure 4 , Figure 5 As shown, a filter screen 25 is fixedly connected to the outer surface of the rotating tube 3 at the exhaust hole 24 , and the filter screen 25 can prevent impurities in the tobacco leaves from entering the rotating tube 3 through the exhaust hole 24 and clogging the rotating tube 3 .

[0045] Usage: First pour the tobacco leaves from the conical cover 6. The tobacco leaves will fall into the feed pipe 5 due to their own gravity and slide into the rotating cylinder 1 along the inner wall of the feed pipe 5. Turn on the power of the motor 8, and the motor 8 will drive the gear 9 to rotate. The gear 9 drives the meshing teeth 10 when rotating, and finally drives the rotating cylinder 1 to rotate. When the rotating cylinder 1 rotates, it will drive the spiral plate 4 and the rotating tube 3 to rotate together. When the rotating cylinder 1 rotates, the tobacco leaves will continue to roll in the rotating cylinder 1. At this time, the impurities in the tobacco leaves will fall from the filter holes 2 due to their own gravity. The rotating cylinder 1 and the spiral plate 4 are both tilted downward, and the tobacco leaves will move obliquely downward along the space channel formed by the spiral plate 4 and the rotating cylinder 1. , and continuously flips, which increases the time that the tobacco leaves stay in the rotating cylinder 1, thereby facilitating the full flipping of the tobacco leaves, thereby improving the impurity removal effect of the tobacco leaves, and the tobacco leaves with impurities removed are finally discharged from the opening of the rotating cylinder 1; when the rotating cylinder 1 rotates to separate impurities in the tobacco leaves, the fan 13 is turned on, and the fan 13 will blow air into the air guide duct 12. The air enters the rotating tube 3 along the air guide duct 12 and is finally blown out from the exhaust hole 24. The blown airflow will continuously flow to the rolling tobacco leaves, and the flowing airflow will blow away the dust adsorbed on the surface of the tobacco leaves, and finally be discharged from the filter hole 2. The continuous rolling of the tobacco leaves facilitates the full contact between the airflow and the surface of the tobacco leaves, thereby facilitating the airflow to completely clean the dust on the surface of the tobacco leaves.

[0046] The above are only preferred specific implementations of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and improved concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tobacco leaf cleaning and impurity removal device, comprising a rotating drum (1), characterized in that: A rotating tube (3) is arranged inside the rotating cylinder (1), a spiral plate (4) is wound around the outer circumferential surface of the rotating tube (3), the side edge of the spiral plate (4) is fixedly connected to the inner wall of the rotating cylinder (1), the side wall of the rotating cylinder (1) is penetrated by evenly distributed filtering holes (2), the right end of the rotating cylinder (1) is rotatably connected to a feed pipe (5), the upper end of the feed pipe (5) is fixedly connected to a conical cover (6), and the side surface of the rotating cylinder (1) near the right end is fixedly connected to evenly distributed teeth (10 ), the lower end of the tooth (10) is meshingly connected with a gear (9), the right end side surface of the gear (9) is fixedly connected with a motor (8), a collecting mechanism is provided outside the rotating cylinder (1), the collecting mechanism is used to collect impurities flowing out of the filter hole (2), a fixing rod (7) is fixedly connected to the side surface of the conical cover (6), one end of the fixing rod (7) is connected to the collecting mechanism, and a support plate (19) is fixedly connected to the lower surface of the motor (8), one end of the support plate (19) is connected to the collecting mechanism; The side wall of the rotating tube (3) is penetrated with evenly distributed exhaust holes (24); the right end of the rotating tube (3) is rotatably connected to an air guide tube (12); one end of the air guide tube (12) is fixedly penetrated through the feed tube (5) and extended to the outside; a fan (13) is installed at the lower opening of the air guide tube (12); A second air blocking plate (22) is fixedly connected to the inner wall of the rotating tube (3) at a position close to the air guide tube (12); a sliding groove (23) is provided on one outer surface of the second air blocking plate (22); a sliding block (21) is slidably connected inside the sliding groove (23); and a first air blocking plate (20) is fixedly connected to one outer surface of the sliding block (21); The lower end of the air guide pipe (12) is fixedly connected to an air inlet cover (11), and the lower end opening of the air inlet cover (11) is arranged above the motor (8); The outer side of the rotating cylinder (1) is rotatably connected to a fixed shell (15), the filter hole (2) is wrapped inside the fixed shell (15), the lower left end of the fixed shell (15) is fixedly connected to a debris discharge pipe (16), the lower end of the debris discharge pipe (16) is provided with a collecting bucket (17), the lower end of the fixed shell (15) is fixedly connected to a base (18), the lower end of the fixed shell (15) is located at the right side and is fixedly connected to a support plate (19), and the upper end of the fixed shell (15) is located at the right side and is fixedly connected to a conical cover (6); The collecting barrel (17) is fixedly connected to the lower end of the impurity discharge pipe (16) via a thread, and the collecting barrel (17) is made of a transparent material.

2. A tobacco leaf cleaning and impurity removal device according to claim 1, characterized in that: The inner wall of the rotating cylinder (1) is fixedly connected with uniformly distributed ultraviolet lamp beads (26), and a connecting mechanism is arranged on the outside of the right end of the rotating cylinder (1), the connecting mechanism being used to ensure that the rotating cylinder (1) can supply power to the ultraviolet lamp beads (26) when rotating.

3. A tobacco leaf cleaning and impurity removal device according to claim 2, characterized in that: A second conductive ring (28) is fixedly connected to the outer circumferential surface of the rotating cylinder (1) near the right end, and a first conductive ring (27) is fixedly connected to the outer circumferential surface of the rotating cylinder (1) near the second conductive ring (28). The first conductive ring (27) and the second conductive ring (28) are electrically connected to corresponding electrodes of the ultraviolet lamp bead (26). Carbon brushes (29) are slidably connected to the outer circumferential surfaces of the first conductive ring (27) and the second conductive ring (28). One end of the carbon brush (29) is fixedly connected to the fixed shell (15), and the carbon brush (29) is electrically connected to corresponding electrodes of a power supply.

4. The tobacco leaf cleaning and impurity removal device according to claim 1, characterized in that: An electric heating wire (14) is installed inside the air guide pipe (12) at a position close to the fan (13).

5. The tobacco leaf cleaning and impurity removal device according to claim 1, characterized in that: A filter screen (25) is fixedly connected to the outer surface of the rotating tube (3) at the exhaust hole (24).

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