Electrostatic impurity removal apparatus

Abstract

The application relates to a tobacco impurity removing technical field, and particularly relates to a static electricity impurity removing equipment which comprises a rack, a square support frame and a top frame fixed with the support frame, opposite sides of the lower surface of the top frame are respectively provided with tensioning structures; an L-shaped single-side suspension frame, one end of which is fixed to the rack and the other end of which is suspended above the rack; a driving device fixed to the rack, the driving device comprising driving rollers, driven rollers which are arranged in parallel and are located on opposite sides of the single-side suspension frame and a motor in transmission connection with the driving rollers; a ring-shaped static electricity belt, the static electricity belt being tensioned on the two tensioning structures, the driving rollers, the driven rollers and the single-side suspension frame, the motor driving the driving rollers to rotate the static electricity belt in the circumferential direction, a conveying belt for conveying tobacco leaves being arranged below the static electricity belt, the static electricity belt electrostatically adsorbing impurities in the tobacco leaves; and an impurity storage structure fixed to one side of the rack, the impurity storage structure comprising a collecting box and a scraper, the scraper scraping off the impurities adsorbed on the static electricity belt, and the collecting box receiving the impurities scraped off by the scraper.

Description

Technical Field

[0001] This application relates to the field of tobacco impurity removal technology, and in particular to an electrostatic impurity removal device. Background Technology

[0002] The impurity removal process for tobacco leaves is a key step in improving product quality, ensuring production efficiency, and protecting consumer health.

[0003] In the prior art, electrostatic impurity removal equipment removes impurities by rubbing an electrostatic belt against the impurities mixed in the tobacco leaves, causing the impurities to become statically charged, and then adsorbing the charged impurities through the electrostatic belt. The adsorbed charged impurities are then collected by a scraper, thereby achieving the impurity removal process.

[0004] However, such electrostatic cleaning equipment cannot completely remove the impurities adsorbed by the electrostatic strip. As the equipment operates for a long time, the efficiency of the electrostatic strip in removing impurities decreases. Therefore, the market urgently needs an electrostatic cleaning equipment that is easy to disassemble and replace the electrostatic strip. Utility Model Content

[0005] This application provides an electrostatic cleaning device that enables quick replacement, adjustment, and maintenance of electrostatic strips.

[0006] The electrostatic purification device provided in this application adopts the following technical solution: The frame includes a square support frame and a top frame fixed to the support frame. The top frame includes an upper surface and a lower surface, and tensioning structures are provided on opposite sides of the lower surface of the top frame. A single-sided suspended frame, in the shape of an L, has one end fixed to the upper surface of the frame and the other end suspended above the frame. The drive device is fixed to the upper surface of the frame. The drive device includes a drive roller, a driven roller, and a motor that are arranged in parallel and spaced apart and located on opposite sides of the single-sided suspension frame. The height of the drive device relative to the top frame is not higher than the height of the single-sided suspension frame relative to the top frame. An electrostatic belt, the electrostatic belt being ring-shaped, is tensioned on two tensioning structures, a driving roller, a driven roller, and a single-sided suspension frame. A motor drives the driving roller to rotate, thereby causing the driven roller to rotate via the electrostatic belt, thus allowing the electrostatic belt to rotate circumferentially. A conveyor belt for conveying tobacco leaves is provided below the electrostatic belt. The electrostatic belt is configured to adsorb impurities in the tobacco leaves. An impurity collection structure is fixed to one side of the frame and located outside the direction of rotation of the electrostatic belt. The impurity collection structure includes a collection box and a scraper. The scraper is configured to scrape off impurities adsorbed on the electrostatic belt, and the collection box is used to receive the impurities scraped off by the scraper.

[0007] By adopting the above technical solution, the electrostatic belt can be easily disassembled and installed at one end of the single-sided suspension frame suspended above the frame without disassembling the tensioning structure, drive roller, driven roller, and single-sided suspension frame around which the electrostatic belt is surrounded, in order to make room for disassembly and assembly of the electrostatic belt. This simplifies the operation process of maintaining the electrostatic belt and makes daily maintenance and troubleshooting more convenient and faster. The height of the drive device relative to the top frame is not higher than the height of the single-sided suspension frame relative to the top frame, making the overall structure compact and optimizing the spatial layout. By adjusting the tensioning structure, the electrostatic belt is tensioned on the two tensioning structures, drive roller, driven roller, and single-sided suspension frame to ensure stable operation of the electrostatic belt.

[0008] Optionally, the other end of the single-sided suspension frame includes an opposite edge fixed end and a middle fixed end. The two edge fixed ends are respectively extended with connecting rods in the direction of the driven roller and the driving roller, and the middle fixed end is fixed to the top frame by an adjusting bracket.

[0009] By adopting the above technical solution, the adjusting bracket, in conjunction with the connecting rod, maintains the stability of the other end of the single-sided suspended frame. Simultaneously, by adjusting the height of the adjusting bracket, the surface of the single-sided suspended frame is made parallel to the top frame, allowing the electrostatic belt to operate smoothly on the surface of the single-sided suspended frame. By configuring the lengths of the adjusting bracket and the connecting rod, a pre-tensioning force is applied to the other end of the single-sided suspended frame, eliminating the minute gaps between the adjusting bracket and the tensioning structure, thereby giving the electrostatic cleaning equipment vibration resistance. By setting up the single-sided suspended frame, the entire frame is prevented from forming a closed structure, thus avoiding and amplifying resonance phenomena during the operation of the electrostatic cleaning equipment.

[0010] Optionally, the adjusting bracket is a sleeve with an adjustable length.

[0011] By adopting the above technical solution, the adjustment bracket has a simple structure, low cost, and is easy to adjust in length so that the surface of the single-sided suspended frame is parallel to the top frame.

[0012] Optionally, the surface of the single-sided suspended frame facing away from the top frame is further provided with multiple support plates at intervals, and the multiple support plates are arranged in parallel at intervals.

[0013] By adopting the above technical solution, the support plate provides support for the surface of the electrostatic belt, preventing the part of the electrostatic belt between the active roller and the driven roller from sagging due to gravity, which would cause unstable operation. This ensures that the working gap between the electrostatic belt and the tobacco leaves is uniform and consistent, guaranteeing the stability and uniformity of the electrostatic adsorption effect.

[0014] Optionally, a groove is provided between the driven roller and the driving roller, and the electrostatic belt is provided with a positioning protrusion located in the groove.

[0015] By adopting the above technical solution, the positioning protrusion cooperates with the groove to effectively prevent the electrostatic strip from shifting laterally, thereby avoiding frictional wear between the edge of the electrostatic strip and other components, extending the service life of the electrostatic strip, and preventing damage to the electrostatic cleaning equipment caused by the shift of the electrostatic strip.

[0016] Optionally, the top frame is also provided with an L-shaped fixing plate, and the opposite ends of the driven roller and the opposite ends of the driving roller are respectively connected to the L-shaped fixing plate.

[0017] By adopting the above technical solution, the active roller and the driven roller are stably installed on the top frame by an L-shaped fixing piece, and the L-shaped fixing piece is easy to process and disassemble, thereby facilitating the quick disassembly and assembly of the electrostatic strip at one end of the single-sided suspension frame.

[0018] Optionally, the tensioning structure includes at least two sets, and at least one set of the tensioning structure includes: two tensioning levers respectively oscillatingly disposed on one side of the driving roller or the driven roller; and a connecting roller rotatably connected between the two tensioning levers.

[0019] By adopting the above technical solution, the tensioning lever abuts against the electrostatic belt through the connecting roller, thereby tensioning the electrostatic belt to maintain stable operation. At the same time, the angle of the tensioning lever can be adjusted to adjust the tension of the electrostatic belt and the contact area between the electrostatic belt and the tobacco leaf.

[0020] Optionally, the connecting roller is provided with support rollers at intervals along its axial direction.

[0021] By adopting the above technical solution, the support roller ensures that the tension is applied evenly to the surface of the electrostatic belt and prevents the electrostatic belt from slipping and deforming, so as to make the surface of the electrostatic belt flat and avoid the electrostatic belt from directly contacting the connecting roller, which would cause the electrostatic belt to bend and deform around the periphery of the connecting roller.

[0022] Optionally, an arc-shaped piece is connected to one end of the tensioning swing rod near the L-shaped fixing piece. The arc-shaped piece has an arc-shaped groove, and the arc-shaped groove is rotatably connected to the connecting rod.

[0023] By adopting the above technical solution, the single-sided suspension frame and the tensioning swing rod move in tandem. When the tensioning swing rod rotates, the preload of the connecting rod on the single-sided suspension frame is changed by the arc-shaped plate, thereby ensuring that the tensioning effect of the single-sided suspension frame and the tensioning swing rod on the electrostatic strip is coordinated to an appropriate degree. When the parallelism of the single-sided suspension frame relative to the top frame is adjusted, the connecting rod moves and restricts the rotation range of the arc-shaped plate to limit the rotation range of the tensioning swing rod, thus ensuring that the tensioning effect of the single-sided suspension frame and the tensioning swing rod on the electrostatic strip is always within a range that does not damage the electrostatic strip.

[0024] Optionally, the fixed frame is fitted with a housing.

[0025] By adopting the above technical solution, the internal structure of the electrostatic precipitator is protected, and its normal operation is prevented from being interfered with by the external environment, thereby extending its service life.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. The single-sided suspension frame is fixed at one end to the upper surface of the frame and suspended above the frame at the other end, thereby enabling quick adjustment and maintenance of the electrostatic strip; 2. A groove is provided between the driven roller and the driving roller, and the electrostatic belt is provided with a positioning protrusion located in the groove, thereby effectively preventing the electrostatic belt from shifting laterally; 3. The single-sided suspension frame restricts the range of motion of the arc-shaped plate and the tensioning swing rod, thereby keeping the tensioning effect of the single-sided suspension frame and the tensioning swing rod on the electrostatic belt within a range that does not damage the electrostatic belt. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an electrostatic purification device according to one embodiment of this application; Figure 2 This is a partial structural schematic diagram of an electrostatic purification device according to one embodiment of this application; Figure 3 This is a partial structural schematic diagram from another perspective of the electrostatic purification device described in one embodiment of this application; Figure 4 This is a partial structural schematic diagram from another perspective of the electrostatic purification device described in one embodiment of this application; Figure 5 yes Figure 4 A magnified view of part A in the image; Figure 6 This is a partial structural schematic diagram from another perspective of the electrostatic cleaning device described in one embodiment of this application.

[0028] Figure 7 This is a partial structural schematic diagram from another perspective of the electrostatic cleaning device described in one embodiment of this application.

[0029] Explanation of reference numerals in the attached figures: 100. Electrostatic impurity removal equipment; 1. Frame; 11. Support frame; 12. Top frame; 13. L-shaped fixing plate; 2. Tensioning structure; 21. Tensioning swing rod; 211. Arc-shaped plate; 212. Arc-shaped groove; 22. Connecting roller; 23. Support roller; 3. Single-sided suspension frame; 31. Connecting rod; 32. Adjusting bracket; 33. Support plate; 4. Drive device; 41. Driven roller; 42. Driven roller; 43. Motor; 44. Groove; 5. Electrostatic belt; 51. Positioning protrusion; 6. Impurity collection structure; 61. Collection box; 62. Scraper; 7. Shell. Detailed Implementation

[0030] The present application will be further described in detail below with reference to all the accompanying drawings.

[0031] This application discloses an electrostatic cleaning device 100.

[0032] Please see Figure 1 An electrostatic impurity removal device 100 provided in this application embodiment includes a frame 1, a single-sided suspended frame 3, a drive device 4, an electrostatic belt 5, and an impurity collection structure 6.

[0033] Specifically, the frame 1 constitutes the main support structure of the electrostatic precipitator 100, including a square support frame 11 and a top frame 12 fixed to the support frame 11. The top frame 12 has an upper surface and a lower surface. To achieve tensioning of the electrostatic belt 5, tensioning structures 2 are respectively provided on opposite sides of the lower surface of the top frame 12. In this embodiment, the frame 1 is made of a rigid material, such as steel. The support frame 11 is connected by welding, bolting, or other methods to form a frame structure; the lower surface of the top frame 12 is connected to the upper surface of the support frame 11 by bolting or other methods. In this embodiment, the upper end of the support frame 11 is made of a square tube to achieve telescopicity, so that the height of the upper end of the support frame 11 can be adjusted within a certain range to adjust the working height of the electrostatic precipitator 100 relative to the conveyor belt below.

[0034] Please refer to the following: Figure 2-3 as well as Figure 6 The single-sided suspension frame 3 is L-shaped, with one end fixed to the upper surface of the frame 1 and the other end suspended above the frame 1. The other end of the single-sided suspension frame 3 includes opposite edge fixing ends and a middle fixing end. The two edge fixing ends extend with connecting rods 31 towards the driven roller 42 and the driving roller 41, respectively. The middle fixing end is fixed to the top frame 12 by an adjusting bracket 32.

[0035] Specifically, the single-sided suspended frame 3 can be made of metal, such as steel or aluminum alloy, and one end can be fixed to the upper surface of the frame 1 by welding or other methods.

[0036] In this embodiment, the adjusting bracket 32 ​​is a sleeve with adjustable length, and the length can be adjusted by telescopic connection of two sleeves. One end of the adjusting bracket 32 ​​can be fixed to the upper surface of the top frame 12 by screwing, and a through hole is provided on the side near the other end. A connecting rod is provided on the middle fixed end of the single-sided floating frame 3. The connecting rod can be connected to the through hole. By adjusting the height of the adjusting bracket 32, the height of the connecting rod relative to the top frame 12 can be changed, thereby adjusting the single-sided floating frame 3 to be parallel to the surface of the top frame 12.

[0037] Please see Figure 4 Multiple support plates 33 are spaced apart on the surface of the single-sided suspended frame 3 away from the top frame 12. The multiple support plates 33 are arranged in parallel and spaced apart and abut against the lower surface of the electrostatic belt 5. One end of the support plate 33 is close to the driving roller 41 and the other end is close to the driven roller 42, thereby reducing the length of the electrostatic belt 5 suspended in space above the top frame 12 and providing support for the surface of the electrostatic belt 5. This prevents the part of the electrostatic belt 5 between the driving roller 41 and the driven roller 42 from drooping due to gravity, which would cause unstable operation. This ensures that the working gap between the electrostatic belt 5 and the tobacco leaves is uniform and consistent, thus guaranteeing the stability and uniformity of the electrostatic adsorption effect.

[0038] Please see Figure 2-4 The drive device 4 is fixed to the upper surface of the frame 1 and includes an active roller 41, a driven roller 42 and a motor 43 that are arranged in parallel and spaced apart and located on opposite sides of the single-sided suspension frame 3, respectively. The height of the drive device 4 relative to the top frame 12 is not higher than the height of the single-sided suspension frame 3 relative to the top frame 12 so that the overall structure of the electrostatic cleaning device 100 is compact.

[0039] Specifically, an L-shaped fixing plate 13 is provided on the upper surface of the top frame 12. One end of the driving roller 41, one end of the driven roller 42, and the motor 43 are fixed on the L-shaped fixing plate 13 located on one side of the top frame 12 where the single-sided suspension frame 3 is fixed. In this embodiment, the motor 43 is connected to the driving roller 41 through a chain to drive the driving roller 41 to rotate stably. The surface of the L-shaped fixing plate 13 provided on the opposite side of the top frame 12 is provided with a through hole. The other end of the driving roller 41 and the other end of the driven roller 42 pass through and abut against the through hole, so that one end of the driving roller 41 and one end of the driven roller 42 are fixed on the L-shaped fixing plate 13, while the opposite end is suspended above the frame 1 and abuts against the L-shaped fixing plate 13.

[0040] Specifically, the motor 43 can be DC-driven to ensure stable power output. In other embodiments, the motor 43 can also be connected to the drive roller 41 via a belt to drive the drive roller 41 to rotate. The drive roller 41 and the driven roller 42 are both drive shafts, one end of which is fixed to the L-shaped fixing plate 13. The other end of the drive shaft is suspended above the frame 1 and fitted with a roller. The two ends of the drive shaft extend out of the rollers, and the two ends of the rollers are fixedly connected to the drive shaft by welded discs. The end of the drive shaft fixedly connected to the L-shaped fixing plate 13 can be fixed by a disc protruding from its surface. The end of the drive shaft suspended above the frame 1 can pass through and abut against a through hole on the surface of the L-shaped fixing plate 13. The drive shaft, roller, and disc can be made of metal, such as steel, and the roller is covered with rubber or polyurethane. In other embodiments, the surface of the rubber or polyurethane material covering the roller is textured to enhance the friction against the electrostatic belt 5.

[0041] Both the driving roller 41 and the driven roller 42 have a groove 44 in the middle. The electrostatic belt 5 has a positioning protrusion 51 located in the groove 44, so that the positioning protrusion 51 can be embedded in the groove 44. When the electrostatic purification equipment 100 is running at high speed, the driving roller 41 and the driven roller 42 drive the electrostatic belt 5 to rotate circumferentially. The positioning protrusion 51 cooperates with the groove 44 to guide the electrostatic belt 5 to move in the direction of rotation of the driving roller 41, so as to avoid the electrostatic belt 5 from deviating and the edge of the electrostatic belt 5 from rubbing against other parts and causing wear.

[0042] Please see Figure 2-3 The electrostatic belt 5 is easily threaded through one end of the single-sided suspension frame 3, the driving roller 41, and the driven roller 42, which are suspended above the frame 1. The electrostatic belt 5 is tensioned on the two tensioning structures 2, the driving roller 41, the driven roller 42, and the single-sided suspension frame 3. The motor 43 provides stable transmission via a chain, causing the driven roller 42 to rotate in conjunction with the driving roller 41, allowing the electrostatic belt 5 to move circumferentially. In this embodiment, a conveyor belt for transporting tobacco leaves is provided below the electrostatic belt 5. When rotating, the electrostatic belt 5 can generate static electricity through friction with the tobacco leaves to adsorb impurities. In this embodiment, the electrostatic belt 5 can be made of materials such as polytetrafluoroethylene (PTFE) or polyvinyl chloride (PVC) to achieve static electricity generation through friction with the tobacco leaves.

[0043] Please refer to the following: Figure 1-7 The impurity collection structure 6 is fixed to one side of the frame 1 and located outside the direction of rotation of the electrostatic belt 5. The impurity collection structure 6 includes a collection box 61 and a scraper 62. The scraper 62 is configured to scrape off the impurities adsorbed on the electrostatic belt 5, and the collection box 61 is used to receive the impurities scraped off by the scraper 62.

[0044] Specifically, one end of the scraper 62 is fixed to the collection box 61, and the other end abuts against the electrostatic strip 5 so that the scraper 62 is tilted relative to the electrostatic strip 5, thereby more effectively scraping away impurities electrostatically adsorbed on the surface of the electrostatic strip 5. The scraper 62 can be made of rubber or engineering plastic, etc., to conform to the surface of the electrostatic strip 5 and efficiently scrape away impurities; the collection box 61 is sealed, or a dustproof net is fixed to its surface to facilitate timely emptying of impurities from the collection box 61.

[0045] Please see Figure 4 as well as Figure 7 The tensioning structure 2 includes a tensioning lever 21 and a connecting roller 22. The tensioning lever 21 is respectively disposed at the opposite ends of the driving roller 41 and the driven roller 42. The connecting roller 22 connects the tensioning lever 21 located at the opposite ends of the driving roller 41 or the driven roller 42, so that the tensioning lever 21 located at the opposite ends of the driving roller 41 or the driven roller 42 can be synchronously adjusted in angle, avoiding wrinkles and slack on the surface of the electrostatic belt 5. By adjusting the angle of the tensioning lever 21, the tension of the electrostatic belt 5 can be changed, so that the electrostatic belt 5 can operate stably.

[0046] Specifically, the connecting roller 22 is provided with support rollers 23 at intervals along its axial direction to ensure that the tension is applied evenly to the surface of the electrostatic belt 5 and to prevent the electrostatic belt 5 from slipping and deforming, so as to make the surface of the electrostatic belt 5 flat, thereby avoiding direct contact between the electrostatic belt 5 and the connecting roller 22, which would cause the electrostatic belt 5 to bend and deform around the periphery of the connecting roller 22.

[0047] One end of the tensioning swing rod 21 near the L-shaped fixing plate is connected to an arc-shaped plate 211. The arc-shaped plate 211 has an arc-shaped groove 212. The arc-shaped groove 212 rotatably connects to the connecting rod 31 at the opposite edge fixing end of the single-sided suspension frame 3. The end of the connecting rod 31 is provided with a fixing component, such as a detachable bolt or a pin with a positioning pin. The fixing component can be locked after passing through the arc-shaped groove 212, so that the connecting rod 31 is rotatably connected to the arc-shaped groove 212, thereby enabling the single-sided suspension frame 3 and the tensioning swing rod 21 to move together. During the initial installation or adjustment process, first loosen the fasteners used to lock the connecting rod 31 and the arc groove 212 so that the connecting rod 31 can slide within the arc groove 212. Apply external force to the tensioning swing rod 21 to make it rotate, thereby connecting the roller 22 to push the electrostatic belt 5 to change the tension of the electrostatic belt 5. After the tensioning swing rod 21 is adjusted to a suitable angle, re-lock the aforementioned fasteners in the current position so that the connecting rod 31 and the arc plate 211 cannot move relative to each other, thereby achieving stable maintenance of the tension of the electrostatic belt 5.

[0048] When the tensioning lever 21 rotates, the preload of the connecting rod 31 on the single-sided suspension frame 3 is changed by the arc plate 211, so that the tensioning effect of the single-sided suspension frame 3 and the tensioning lever 21 on the electrostatic strip 5 is coordinated to an appropriate degree; when the parallelism of the single-sided suspension frame 3 relative to the top frame 12 is adjusted, the connecting rod 31 moves and limits the rotation range of the arc plate 211, so as to limit the rotation range of the tensioning lever 21, so that the tensioning effect of the single-sided suspension frame 3 and the tensioning lever 21 on the electrostatic strip 5 is always within the range that does not damage the electrostatic strip 5.

[0049] The frame 1 is covered with a housing 7 to protect the internal structure of the electrostatic precipitator 100 and prevent external environmental interference with its normal operation, thereby extending its service life.

[0050] It should be noted that the electrostatic belt itself does not generate static electricity when stationary. During operation, the annular electrostatic belt 5 rotates at a certain speed, while the conveyor belt below transports tobacco leaves. During this process, the surface of the electrostatic belt comes into continuous, large-area contact and friction with the tobacco leaves on the conveyor belt. According to the triboelectric series, charge transfer occurs when two different materials (in this case, the electrostatic belt and the tobacco leaves) rub against each other. One material loses electrons and gains a positive charge, while the other gains electrons and gains a negative charge. The surface of the electrostatic belt, now charged, forms an electrostatic field. Lighter impurities in the tobacco leaves (such as tobacco stems, paper scraps, and plastic film fragments) may also acquire a charge opposite to that of the electrostatic belt after friction, or become polarized due to electrostatic induction, thus being attracted by the strong electrostatic attraction of the belt. These impurities are adsorbed onto the electrostatic belt and, as the belt rotates, are eventually scraped off by the scraper 62 and fall into the collection box 61, thus achieving separation from the tobacco leaves.

[0051] The implementation principle of the electrostatic cleaning device 100 in this application embodiment is as follows: Before the electrostatic cleaning device 100 operates, the surface of the single-sided suspension frame 3 is adjusted to be parallel to the surface of the top frame 12 by the adjusting bracket 32. The surface of the electrostatic belt 5 located below the top frame 12 is adjusted to be parallel to the conveyor belt by the tensioning structure 2, so that the surface of the electrostatic belt 5 can contact the tobacco leaves on the conveyor belt. When the electrostatic cleaning device 100 operates, the groove 44 provided between the driving roller 41 and the driven roller 42 cooperates with the positioning protrusion 51 provided on the surface of the electrostatic belt 5, so that the electrostatic belt 5 moves along the rotation direction of the driving roller 41 without deviation, and the surface of the electrostatic belt 5 contacts the tobacco leaves. The tobacco leaves are statically charged by friction, and small impurities located in the tobacco leaves are attracted by electrostatic adsorption. The scraper 62 scrapes off the small impurities attracted to the surface of the electrostatic belt 5 and collects them through the collection box 61. When the electrostatic belt 5 is disassembled or installed, the adjusting bracket 32 ​​is separated from the single-sided suspension frame 3, so that one end of the single-sided suspension frame 3 is suspended above the frame 1. One end of the driving roller 41 and one end of the driven roller 42 are separated from the L-shaped fixing plate 13, so that one end of the driving roller 41 and one end of the driven roller 42 on the same side as the end of the single-sided suspension frame 3 that is suspended above the frame 1 are suspended. The electrostatic belt 5 is then disassembled or installed from the end of the single-sided suspension frame 3 that is suspended above the frame 1.

[0052] To further illustrate the core effect of this application, namely "facilitating the removal and installation of the anti-static strip," the specific operational steps may include: Release the tension. First, loosen the fastener that locks the connecting rod 31 into the arc groove 212, so that the tensioning swing rod 21 can rotate freely, thereby removing the tension of the electrostatic belt 5 from the connecting roller 22 and allowing the electrostatic belt 5 to relax completely.

[0053] Separate the suspension frame support. Loosen or remove the components used to fix the adjustment bracket 32 ​​and the single-sided suspension frame 3, so that the suspension end of the single-sided suspension frame 3 is completely separated from the adjustment bracket 32.

[0054] Separate the suspended ends of the rollers. Remove the components fixed to the L-shaped fixing plate 13 that are used to abut against the suspended ends of the drive roller 41 and the driven roller 42, so that the suspended ends of the drive roller 41 and the driven roller 42 can move freely.

[0055] Remove the electrostatic belt 5. Since the single-sided suspension frame 3, the driving roller 41, and the driven roller 42 are all in an open "single-sided suspension" state, the operator can easily pull the old electrostatic belt 5 horizontally out from this open side. When installing a new electrostatic belt, simply follow the reverse steps. The entire process does not require disassembling the main frame or large components such as the drive motor, making it convenient and greatly reducing maintenance time.

[0056] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An electrostatic impurity removal device, characterized in that, include: The frame (1) includes a square support frame (11) and a top frame (12) fixed to the support frame (11). The top frame (12) includes an upper surface and a lower surface. Tensioning structures (2) are provided on opposite sides of the lower surface of the top frame (12). A single-sided suspended frame (3) is L-shaped. One end of the single-sided suspended frame (3) is fixed to the upper surface of the frame (1), and the other end is suspended above the frame (1). The drive device (4) is fixed to the upper surface of the frame (1). The drive device (4) includes a drive roller (41) and a driven roller (42) arranged in parallel and located on opposite sides of the single-sided suspension frame (3), and a motor (43) connected to the drive roller (41). The height of the drive device (4) relative to the top frame (12) is not higher than the height of the single-sided suspension frame (3) relative to the top frame (12). An electrostatic belt (5) is ring-shaped and is tensioned on two tensioning structures (2), an active roller (41), a driven roller (42), and a single-sided suspension frame (3). The motor (43) can drive the active roller (41) to rotate, thereby driving the driven roller (42) to rotate through the electrostatic belt (5), so that the electrostatic belt (5) rotates circumferentially. A conveyor belt for conveying tobacco leaves is provided in the gap below the electrostatic belt (5). The electrostatic belt (5) is configured to adsorb impurities in the tobacco leaves. as well as An impurity collection structure (6) is fixed to one side of the frame (1) and located outside the rotation direction of the electrostatic strip (5). The impurity collection structure (6) includes a collection box (61) and a scraper (62). The scraper (62) is configured to scrape off impurities adsorbed on the electrostatic strip (5), and the collection box (61) is used to receive the impurities scraped off by the scraper (62).

2. The electrostatic purification device according to claim 1, characterized in that: The other end of the single-sided suspension frame (3) includes an opposite edge fixed end and a middle fixed end. The two edge fixed ends extend with connecting rods (31) in the direction of the driven roller (42) and the driving roller (41), respectively. The middle fixed end is fixed to the top frame (12) by an adjusting bracket (32).

3. The electrostatic purification device according to claim 2, characterized in that: The adjusting bracket (32) is a sleeve with adjustable length.

4. The electrostatic purification device according to claim 1, characterized in that: The surface of the single-sided suspended frame (3) facing away from the top frame (12) is also provided with multiple support plates (33) at intervals, and the multiple support plates (33) are arranged in parallel at intervals.

5. The electrostatic purification device according to claim 2, characterized in that: A groove (44) is provided between the driven roller (42) and the driving roller (41), and the electrostatic belt (5) is provided with a positioning protrusion (51), which is located in the groove (44).

6. The electrostatic purification device according to claim 5, characterized in that: The top frame (12) is also provided with an L-shaped fixing piece (13), and the opposite ends of the driven roller (42) and the opposite ends of the driving roller (41) are respectively connected to the L-shaped fixing piece (13).

7. The electrostatic purification device according to claim 6, characterized in that: The tensioning structure (2) includes at least two sets, and at least one set of the tensioning structure (2) includes: two tensioning levers (21) respectively oscillatingly disposed on one side of the driving roller (41) or the driven roller (42); and a connecting roller (22) rotatably connected between the two tensioning levers (21).

8. The electrostatic purification device according to claim 7, characterized in that: The connecting roller (22) is provided with support rollers (23) spaced apart along its axial direction.

9. The electrostatic purification device according to claim 7, characterized in that: The tensioning swing rod (21) is connected to an arc-shaped piece (211) at one end near the L-shaped fixing piece (13). The arc-shaped piece (211) has an arc-shaped groove (212), which is rotatably connected to the connecting rod (31).

10. The electrostatic purification device according to claim 1, characterized in that: The frame (1) is covered with a housing (7).

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