Tobacco electrostatic impurity removal equipment and electrostatic impurity removal method thereof

Abstract

The application discloses a tobacco electrostatic impurity removing equipment, which comprises an equipment main body, an upper electrostatic impurity removing unit arranged on the upper side of the equipment main body, a lower electrostatic impurity removing unit arranged on the bottom side of the equipment main body and identical in structure with the upper electrostatic impurity removing unit, a belt conveyor arranged on the lower side of the upper electrostatic impurity removing unit and the lower electrostatic impurity removing unit, an electrostatic flannelette cleaning unit arranged on one side of the upper electrostatic impurity removing unit and the lower electrostatic impurity removing unit and matched with the upper electrostatic impurity removing unit and the lower electrostatic impurity removing unit, and a tobacco inlet arranged on the upper side of the equipment main body. The tobacco is twice treated by the electrostatic flannelette on the upper electrostatic impurity removing unit and the lower electrostatic impurity removing unit in the process of electrostatic impurity removing, and the tobacco is turned over after being treated by the belt conveyor once, so that the electrostatic adsorption impurity removing is completed twice, and the impurity removing efficiency of the tobacco is greatly improved.

Description

Technical Field

[0001] This invention relates to the technical field of tobacco leaf impurity removal, and more particularly to an electrostatic tobacco leaf impurity removal device and its electrostatic impurity removal method. Background Technology

[0002] Electrostatic purification of tobacco leaves removes hair, dust, and debris from the tobacco processing process. The process begins by feeding the tobacco leaves into a vibrating conveyor, adjusting the feed rate, and ensuring the tobacco leaves are 1-2 cm thick under the vibration of the conveyor. The leaves are then continuously and evenly fed into the electrostatic purification machine, where impurities such as hair and dust particles are sieved out during the process.

[0003] However, existing electrostatic cleaning machines generally perform a single cleaning process on tobacco leaves. After the electrostatic cloth electrostatically adsorbs impurities, the adsorbed impurities are scraped off by a scraper. However, due to the mutual covering of some impurities, some hairs located on the inner side of the covering layer are difficult to scrape off in one go, resulting in low cleaning efficiency of the electrostatic cloth and thus affecting the subsequent electrostatic cleaning efficiency of the electrostatic cloth. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the current electrostatic dust removal equipment and method for tobacco leaves, the present invention is proposed.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] An electrostatic cleaning device for tobacco leaves includes: a main body of the device, an upper electrostatic cleaning unit disposed on the upper side of the main body of the device, and a lower electrostatic cleaning unit disposed on the lower side of the main body of the device, which has the same structure as the upper electrostatic cleaning unit. A belt conveyor is installed below both the upper electrostatic cleaning unit and the lower electrostatic cleaning unit.

[0008] Both the upper electrostatic cleaning unit and the lower electrostatic cleaning unit are equipped with an electrostatic velvet cleaning unit on one side. A tobacco leaf inlet is provided on the top of the main body of the equipment, and a tobacco leaf outlet is provided on the bottom side of the main body of the equipment.

[0009] The upper electrostatic impurity removal unit includes: an electrostatic velvet cloth and a mesh chain belt disposed inside the electrostatic velvet cloth. Multiple sprockets are symmetrically arranged on both sides of the electrostatic velvet cloth, and the multiple sprockets on each side are driven by a rotating shaft. The mesh chain belt meshes with the sprockets.

[0010] The electrostatic velvet cleaning unit includes: a material seat fixedly mounted on the main body of the equipment, a brush roller rotatably mounted inside the material seat and in contact with the surface of the electrostatic velvet, a drive mechanism for driving the brush roller to rotate is provided on the material seat, a fixed seat is fixedly connected to the inner side of the material seat, a rake plate that contacts the bristles on the brush roller is provided on one side of the fixed seat, and a scraper is also fixedly connected to the material seat.

[0011] In a preferred embodiment of the electrostatic cleaning device for tobacco leaves according to the present invention, the driving mechanism includes: a mounting plate fixedly mounted on the material base, a drive motor mounted on the mounting plate, and a first bevel gear fixedly mounted on the output end of the drive motor. A second bevel gear is meshed with one side of the first bevel gear, and a rotating shaft is fixedly connected to the second bevel gear. The rotating shaft is rotatably connected to the upper side of the material base through a bearing seat, and the rotating shaft rotates synchronously with the brush roller through a belt drive component.

[0012] In a preferred embodiment of the electrostatic impurity removal device for tobacco leaves described in this invention, the output end of the drive motor is fixedly connected to an upper connecting shaft through one end of the material seat, a reciprocating screw is rotatably connected inside the fixed seat, the reciprocating screw is fixedly connected to the bottom end of the upper connecting shaft, a screw slide plate is fitted onto the reciprocating screw, and the screw slide plate is fixedly connected to the rake plate through an elastic mechanism.

[0013] In a preferred embodiment of the electrostatic impurity removal device for tobacco leaves described in this invention, a limiting slide is fixedly connected to the back side of the rake plate, a limiting groove is formed in the limiting slide, a pin is transversely arranged in the limiting groove, and the pin is fixedly connected to the upper top wall of the material seat through a mounting frame.

[0014] In a preferred embodiment of the electrostatic impurity removal device for tobacco leaves described in this invention, the elastic mechanism includes: a sliding sleeve fixedly disposed on one side of the rake plate, and a sliding rod slidably engaged with the sliding sleeve. One end of the sliding rod is fixedly connected to a lead screw slide plate, and a spring is fixedly connected between the lead screw slide plate and the sliding sleeve, with the spring sleeved on the sliding rod.

[0015] In a preferred embodiment of the electrostatic cleaning device for tobacco leaves described in this invention, the rake plate is provided with a plurality of upper hooks and lower hooks, which are arranged in a staggered row.

[0016] In a preferred embodiment of the electrostatic impurity removal device for tobacco leaves described in this invention, the bottom end of the reciprocating screw is fixedly connected to a lower connecting shaft, and the bottom end of the lower connecting shaft passing through the fixed base is fixedly connected to an axial flow fan.

[0017] In a preferred embodiment of the electrostatic impurity removal device for tobacco leaves described in this invention, the lead screw slide plate has symmetrically provided limit sliding holes on both sides, and the inner side of the fixed base is fixedly connected with a limit sliding rod that slides in cooperation with the limit sliding holes.

[0018] In a preferred embodiment of the electrostatic cleaning device for tobacco leaves described in this invention, the upper and lower electrostatic cloth cleaning units are respectively connected to an upper debris channel and a lower debris channel, and the upper debris channel and the lower debris channel are respectively fixedly arranged on both sides of the main body of the device.

[0019] A preferred embodiment of an electrostatic cleaning method applied to an electrostatic cleaning device for tobacco leaves as described above, wherein:

[0020] The beneficial effects of this invention are:

[0021] 1. This invention achieves two electrostatic adsorption and impurity removal processes by using electrostatic cloth on the upper and lower electrostatic impurity removal units during the electrostatic impurity removal process, and turning the tobacco leaves over after the first processing on the belt conveyor, thereby greatly improving the efficiency of removing impurities from tobacco leaves.

[0022] 2. This invention uses the rotation of the brush roller to quickly sweep away the impurities covering the electrostatic cloth, and then the electrostatic cloth comes into contact with the scraper to remove the impurities, which greatly improves the cleaning efficiency of the electrostatic cloth.

[0023] 3. While the brush roller is rotating, the rake plate moves up and down and back and forth, so that the upper and lower hooks remove hair and other fine impurities from the brush roller bristles, thus ensuring that the brush roller bristles are fluffy and that the electrostatic cloth is cleaned efficiently at all times.

[0024] While the brush roller and rake plate are working, the lower connecting shaft rotates to draw air, thereby creating negative pressure inside the material seat and ensuring that the scraped impurities can be quickly sucked away. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0026] Figure 1 This is a schematic diagram of the overall structure of an electrostatic impurity removal device for tobacco leaves proposed in this invention;

[0027] Figure 2 This is a schematic diagram of the electrostatic cloth cleaning unit on one side of the upper electrostatic cleaning unit in the electrostatic cleaning device for tobacco leaves proposed in this invention.

[0028] Figure 3 This is a schematic diagram of the internal structure of the material holder;

[0029] Figure 4 for Figure 3 A schematic diagram of the structure on the other side of the material support;

[0030] Figure 5 for Figure 3 Schematic diagram of the middle fixed seat structure;

[0031] Figure 6 for Figure 5 A schematic diagram of the other side of the central fixing seat;

[0032] Figure 7 for Figure 6 Enlarged structural diagram at point A;

[0033] Figure 8 This is a schematic diagram illustrating the structural principle of the electrostatic cloth cleaning unit when it begins its scraping operation.

[0034] In the diagram: 100 - Main body of the equipment, 200 - Upper electrostatic cleaning unit, 201 - Electrostatic lint, 202 - Mesh belt, 203 - Sprocket, 300 - Electrostatic lint cleaning unit, 301 - Material holder, 302 - Drive mechanism, 302a - Mounting plate, 302b - Drive motor, 302c - First bevel gear, 302d - Second bevel gear, 302e - Bearing seat, 302f - Belt drive component, 303 - Brush roller, 304 - Scraper, 305 - Fixed seat, 306 - Reciprocating screw, 3 07-Lower connecting shaft, 308-Axial flow fan, 309-Screw slide plate, 310-Mounting bracket, 311-Rake plate, 311a-Upper hook nail, 311b-Lower hook nail, 312-Elastic mechanism, 312a-Sliding sleeve, 312b-Spring, 312c-Sliding rod, 313-Limiting slide seat, 314-Pin shaft, 315-Upper connecting shaft, 400-Upper layer debris channel, 500-Belt conveyor, 600-Lower layer electrostatic precipitator unit, 700-Lower layer debris channel, 800-Tobacco leaf outlet. Detailed Implementation

[0035] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0037] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0038] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth. Example

[0039] Reference Figures 1-5 According to one embodiment of the present invention, an electrostatic cleaning device for tobacco leaves is provided. The device includes: a main body 100, an upper electrostatic cleaning unit 200 disposed on the upper side of the main body 100, and a lower electrostatic cleaning unit 600 disposed on the bottom side of the main body 100 and having the same structure as the upper electrostatic cleaning unit 200. A belt conveyor 500 is installed below both the upper electrostatic cleaning unit 200 and the lower electrostatic cleaning unit 600.

[0040] Both the upper electrostatic impurity removal unit 200 and the lower electrostatic impurity removal unit 600 are equipped with a matching electrostatic velvet cleaning unit 300 on one side. A tobacco leaf inlet is provided on the top of the main body 100, and a tobacco leaf outlet 800 is provided on the bottom side of the main body 100. The upper and lower electrostatic velvet cleaning units 300 are respectively connected to the upper debris channel 400 and the lower debris channel 700. The upper debris channel 400 and the lower debris channel 700 are respectively fixedly installed on both sides of the main body 100 for the separate discharge of impurities after two adsorptions. The impurities can be collected through a designated collection box.

[0041] The upper electrostatic impurity removal unit 200 includes an electrostatic velvet cloth 201 and a mesh belt 202 disposed inside the electrostatic velvet cloth 201. Multiple sprockets 203 are symmetrically arranged on both sides of the electrostatic velvet cloth 201, and the multiple sprockets 203 on each side are driven by a rotating shaft and uniformly driven by a reduction motor. The mesh belt 202 meshes with the sprockets 203. The electrostatic velvet cloth 201 can be tensioned by a tensioning wheel so that its lower surface is sufficiently close to the passing tobacco leaves.

[0042] The electrostatic lint cleaning unit 300 includes: a material base 301 fixedly mounted on the main body 100; a brush roller 303 rotatably mounted inside the material base 301 and in contact with the surface of the electrostatic lint 201; the brush roller 303 has many dense soft bristles on its surface; a drive mechanism 302 for driving the brush roller 303 to rotate is provided on the material base 301; and the drive mechanism 302 includes: a mounting plate 302a fixedly mounted on the material base 301; a drive motor 302b mounted on the mounting plate 302a; and a component fixedly mounted on the drive motor 302b. The first bevel gear 302c on the output end of 02b has a second bevel gear 302d meshing with one side of it. A rotating shaft is fixedly connected to the second bevel gear 302d, and the rotating shaft is rotatably connected to the upper side of the material seat 301 through the bearing seat 302e. The rotating shaft rotates synchronously with the brush roller 303 through the belt drive component 302f. When the output shaft of the drive motor 302b is working, the synchronous rotation of the brush roller 303 is achieved through the mutual cooperation of the first bevel gear 302c, the second bevel gear 302d, and the belt drive component 302f.

[0043] Furthermore, a fixed seat 305 is fixedly connected to the inner side of the material base 301. A rake plate 311 that contacts the bristles on the brush roller 303 is provided on one side of the fixed seat 305. An upper connecting shaft 315 is fixedly connected to one end of the output end of the drive motor 302b that passes through the material base 301. A reciprocating screw 306 is rotatably connected inside the fixed seat 305. The reciprocating screw 306 is fixedly connected to the bottom end of the upper connecting shaft 315. A screw slide plate 309 is connected to the reciprocating screw 306. Limiting sliding holes are symmetrically opened on both sides of the screw slide plate 309. A limiting sliding rod that slides in cooperation with the limiting sliding holes is fixedly connected to the inner side of the fixed seat 305. The screw slide plate 309 is fixedly connected to the rake plate 311 through an elastic mechanism 312. When the brush roller 303 rotates, the reciprocating screw 306 rotates, driving the screw slide plate 309 to move up and down, so that the rake plate 311 moves up and down.

[0044] A scraper 304 is also fixedly connected to the material holder 301. Multiple upper hooks 311a and lower hooks 311b are respectively provided on the rake plate 311. The upper hooks 311a and lower hooks 311b are arranged in rows and staggered. The upper hooks 311a and lower hooks 311b have barbs, which can hook out fine and long impurities such as hair hidden inside the bristles of the brush roller 303, and at the same time straighten the bristles.

[0045] Furthermore, a lower connecting shaft 307 is fixedly connected to the bottom end of the reciprocating screw 306. An axial flow fan 308 is fixedly connected to the bottom end of the fixed base 305 through the lower connecting shaft 307. When the axial flow fan 308 rotates, it discharges airflow to the outside, thereby creating negative pressure in the material seat 301 and quickly sucking away impurities. Example

[0046] Reference Figure 6-8 The difference from Embodiment 1 is that a limiting slide 313 is fixedly connected to the back side of the rake plate 311. A limiting groove is formed in the limiting slide 313, and a pin 314 is transversely arranged in the limiting groove. The pin 314 is fixedly connected to the upper top wall of the material seat 301 through the mounting bracket 310. The limiting groove and the pin 314 fit together. When the rake plate 311 moves up and down, the two squeeze each other, realizing the forward and backward movement of the rake plate 311. The elastic mechanism 312 includes: a fixed setting A sliding sleeve 312a is placed on one side of the rake plate 311, and a sliding rod 312c is slidably engaged with the sliding sleeve 312a. One end of the sliding rod 312c is fixedly connected to the lead screw slide plate 309. A spring 312b is fixedly connected between the lead screw slide plate 309 and the sliding sleeve 312a, and the spring 312b is sleeved on the sliding rod 312c. Under the elastic expansion and contraction of the sliding sleeve 312a, the spring 312b and the sliding rod 312c, the rake plate 311 has a range of motion for pushing back and forth.

[0047] The rest of the structure is the same as in Example 1.

[0048] The electrostatic cleaning method applied to the aforementioned electrostatic cleaning equipment for tobacco leaves is as follows: First, tobacco leaves enter through the tobacco leaf inlet above the main body 100 of the equipment and are conveyed forward by the belt conveyor 500. The upper electrostatic cleaning unit 200 operates in the opposite direction to the belt conveyor 500. The electrostatic cloth 201 electrostatically adsorbs and removes impurities from the tobacco leaves conveyed by the belt conveyor 500. Then, the electrostatic cloth cleaning unit 300 begins the scraping operation, driven by the drive motor 302b. Under the transmission cooperation of the first bevel gear 302c, the second bevel gear 302d, and the belt drive component 302f, the brush roller 303 performs the scraping operation. The brush roller 303 cleans the continuously passing electrostatic cloth, while the reciprocating screw 306 rotates and the screw slide 309 moves up and down. As the rake plate 311 moves up and down, the inner limiting groove of the limiting slide 313 and the pin 314 make squeezing contact, thereby driving the rake plate 311 to move up and down and push back and forth. Thus, the upper hook nail 311a and the lower hook nail 311b remove some hair and impurities adsorbed on the brush roller 303 bristles, so that the brush roller 303 can maintain efficient scraping of the electrostatic cloth. The cleaned impurities are quickly carried away from the debris channel by the negative pressure airflow generated by the rotation of the axial fan 308.

[0049] Finally, the tobacco leaves conveyed by the upper belt conveyor 500 fall into the lower belt conveyor 500 for turning. The turned tobacco leaves undergo secondary electrostatic cleaning by the lower electrostatic cleaning unit 600. At the same time, the electrostatic cloth cleaning unit 300 next to the lower electrostatic cleaning unit 600 performs scraping work. After secondary cleaning, the tobacco leaves are finally discharged from the tobacco leaf outlet 800.

[0050] In summary, this invention achieves two-stage electrostatic adsorption and impurity removal during the electrostatic removal process. This is accomplished through two separate processes: the upper electrostatic removal unit 200 and the lower electrostatic removal unit 600 using electrostatic cloth. After the first processing by the belt conveyor 500, the tobacco leaves are turned over, thus completing the two-stage electrostatic adsorption and impurity removal. This significantly improves the efficiency of removing impurities from the tobacco leaves. The rotation of the brush roller 303 quickly removes the covering impurities from the electrostatic cloth 201, and then the electrostatic cloth 201 contacts the scraper 304 for subsequent impurity scraping. This process greatly enhances the efficiency of electrostatic adsorption and impurity removal. The cleaning efficiency of the electrostatic cloth is improved by the simultaneous rotation of the brush roller 303 and the reciprocating and forward / backward movement of the rake plate 311. This causes the upper hook 311a and lower hook 311b to remove fine impurities such as hair from the bristles of the brush roller 303, ensuring that the bristles of the brush roller 303 are fluffy and that the electrostatic cloth 201 is cleaned efficiently at all times. While the brush roller 303 and the rake plate 311 are working, the lower connecting shaft 307 rotates to draw air, thereby creating negative pressure inside the material seat 301, ensuring that the scraped impurities can be quickly sucked away.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An electrostatic impurity removal device for tobacco leaves, characterized in that, include: The equipment body (100), the upper electrostatic cleaning unit (200) disposed on the upper side of the equipment body (100), and the lower electrostatic cleaning unit (600) disposed on the bottom side of the equipment body (100) and having the same structure as the upper electrostatic cleaning unit (200), and belt conveyors (500) are installed below the upper electrostatic cleaning unit (200) and the lower electrostatic cleaning unit (600). The upper electrostatic cleaning unit (200) and the lower electrostatic cleaning unit (600) are each provided with an electrostatic cloth cleaning unit (300) that works with them. The upper part of the equipment body (100) is provided with a tobacco leaf inlet, and the lower part of the equipment body (100) is provided with a tobacco leaf outlet (800). The upper electrostatic cleaning unit (200) includes: an electrostatic velvet cloth (201) and a mesh belt (202) disposed inside the electrostatic velvet cloth (201). Multiple sprockets (203) are symmetrically arranged on both sides of the electrostatic velvet cloth (201), and the multiple sprockets (203) on each side are driven by a rotating shaft. The mesh belt (202) meshes with the sprockets (203). The electrostatic velvet cleaning unit (300) includes: a material seat (301) fixedly mounted on the main body (100) and a brush roller (303) rotatably mounted inside the material seat (301) and in contact with the surface of the electrostatic velvet cloth (201). The material seat (301) is provided with a drive mechanism (302) for driving the brush roller (303) to rotate. A fixed seat (305) is fixedly connected to the inner side of the material seat (301). A rake plate (311) in contact with the bristles on the brush roller (303) is provided on one side of the fixed seat (305). A scraper (304) is also fixedly connected to the material seat (301). The back side of the rake plate (311) is fixedly connected to a limiting slide (313). A limiting groove is opened in the limiting slide (313). A pin (314) is transversely arranged in the limiting groove. The pin (314) is fixedly connected to the upper top wall of the material seat (301) through the mounting bracket (310). A plurality of upper hooks (311a) and lower hooks (311b) are respectively arranged on the rake plate (311), and the upper hooks (311a) and lower hooks (311b) are arranged in rows in an alternating pattern. While the rake plate (311) moves up and down, the inner limiting groove of the limiting slide (313) and the pin (314) make squeezing contact, thereby driving the rake plate (311) to move up and down and push back and forth, so that the upper hook (311a) and lower hook (311b) remove some hair and impurities adsorbed on the bristles of the brush roller (303).

2. The electrostatic purification device for tobacco leaves according to claim 1, characterized in that: The drive mechanism (302) includes: a mounting plate (302a) fixedly mounted on the material base (301), a drive motor (302b) mounted on the mounting plate (302a), and a first bevel gear (302c) fixedly mounted on the output end of the drive motor (302b). A second bevel gear (302d) is meshed with one side of the first bevel gear (302c). A rotating shaft is fixedly connected to the second bevel gear (302d), and the rotating shaft is rotatably connected to the upper side of the material base (301) through a bearing seat (302e). The rotating shaft rotates synchronously with the brush roller (303) through a belt drive component (302f).

3. The electrostatic purification device for tobacco leaves according to claim 2, characterized in that: The output end of the drive motor (302b) is fixedly connected to an upper connecting shaft (315) through one end of the material holder (301). A reciprocating screw (306) is rotatably connected inside the fixed seat (305). The reciprocating screw (306) is fixedly connected to the bottom end of the upper connecting shaft (315). A screw slide plate (309) is connected to the reciprocating screw (306). The screw slide plate (309) is fixedly connected to the rake plate (311) through an elastic mechanism (312).

4. The electrostatic purification device for tobacco leaves according to claim 3, characterized in that: The elastic mechanism (312) includes: a sliding sleeve (312a) fixedly disposed on one side of the rake plate (311), and a sliding rod (312c) slidably engaged with the sliding sleeve (312a). One end of the sliding rod (312c) is fixedly connected to the lead screw slide plate (309). A spring (312b) is fixedly connected between the lead screw slide plate (309) and the sliding sleeve (312a), and the spring (312b) is sleeved on the sliding rod (312c).

5. The electrostatic purification device for tobacco leaves according to claim 4, characterized in that: The bottom end of the reciprocating lead screw (306) is fixedly connected to a lower connecting shaft (307), and the bottom end of the lower connecting shaft (307) passing through the fixed seat (305) is fixedly connected to an axial flow fan (308).

6. The electrostatic purification device for tobacco leaves according to claim 5, characterized in that: The lead screw slide plate (309) has symmetrical limit sliding holes on both sides, and the inner side of the fixed seat (305) is fixedly connected with a limit sliding rod that slides in cooperation with the limit sliding hole.

7. The electrostatic purification device for tobacco leaves according to claim 6, characterized in that: The electrostatic velvet cleaning unit (300) on the upper and lower sides is respectively connected to the upper debris channel (400) and the lower debris channel (700), and the upper debris channel (400) and the lower debris channel (700) are respectively fixedly installed on both sides of the main body of the equipment (100) for separate discharge of impurities adsorbed twice, which can be collected through a designated collection box.

8. An electrostatic impurity removal method applied to the electrostatic impurity removal equipment for tobacco leaves as described in claim 7, characterized in that: The method includes the following steps: Step 1: The tobacco leaves enter through the tobacco leaf inlet above the main body of the equipment (100) and are conveyed forward by the belt conveyor (500). The upper electrostatic cleaning unit (200) operates in the opposite direction to the belt conveyor (500). The electrostatic cloth (201) electrostatically adsorbs and removes impurities from the tobacco leaves conveyed on the upper surface of the belt conveyor (500). Step Two: The electrostatic velvet cleaning unit (300) begins its scraping operation. Driven by the motor (302b), the brush roller (303) is driven by the first bevel gear (302c), the second bevel gear (302d), and the belt drive (302f) to perform the scraping operation. This allows the brush roller (303) to clean the continuously passing electrostatic velvet. Simultaneously, the reciprocating screw (306) rotates, and the screw slide plate (309) moves reciprocally up and down, moving up and down on the rake plate (311). At the same time, the inner limiting groove of the limiting slide (313) is pressed and contacted with the pin (314), thereby driving the rake plate (311) to move up and down while pushing back and forth, so that the upper hook (311a) and lower hook (311b) remove some hair and impurities adsorbed on the bristles of the brush roller (303), so that the brush roller (303) maintains efficient scraping of the electrostatic cloth, and the cleaned impurities are quickly carried away from the debris channel by the negative pressure airflow generated by the rotation of the axial fan (308); Step 3: The tobacco leaves conveyed by the upper belt conveyor (500) fall into the lower belt conveyor (500) for turning over. After turning over, the tobacco leaves undergo secondary electrostatic cleaning by the lower electrostatic cleaning unit (600). At the same time, the electrostatic cloth cleaning unit (300) next to the lower electrostatic cleaning unit (600) performs scraping work. After secondary cleaning, the tobacco leaves are finally discharged from the tobacco leaf outlet (800).

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