Tobacco shred winnowing and impurity removing device

Abstract

The utility model belongs to the technical field of tobacco shred processing, and discloses a tobacco shred winnowing and impurity removing device which comprises an impurity removing box and an impurity removing mechanism. The impurity removing mechanism comprises a filtering assembly, a sweeping assembly and a driving assembly, the filtering assembly comprises a first filter screen and a second filter screen, the sweeping assembly comprises a straight rod and a plurality of cross rods, the cross rods are located above the first filter screen and the second filter screen, and the driving assembly is connected with the straight rod to drive the cross rods to move in a reciprocating mode. By arranging the impurity removing mechanism, tobacco shreds are evenly distributed and distributed, middle and lower layer impurities are exposed to one side of the blowing assembly, the winnowing efficiency of the blowing assembly is improved, the screening effect is achieved, tobacco shred impurities are filtered more finely, the material purity is improved, and the finished product quality is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tobacco shred processing technical field especially, relates to a tobacco shred air selection and impurity removing device. BACKGROUND

[0002] Dust, soil particles and other impurities may be mixed in tobacco leaves during planting and harvesting. Although part of the impurities can be removed in the industrial processing, impurities such as internal scale and soot agglomeration are mixed in the production equipment. At present, the tobacco factory mainly uses the air selection and impurity removing device to remove various impurities mixed in the tobacco shred. The principle of the air selection and impurity removing device is that the lighter impurities in the tobacco shred material are blown away from the tobacco shred by the air force of the fan, so that the impurities are discharged through the discharge port away from the fan, and the tobacco shred after impurity removal is discharged through the discharge port close to the fan. However, in the actual use process of the air selection and impurity removing device, the tobacco shred material mixed with impurities may not be finely sorted and quickly discharged through the two discharge ports, resulting in inaccurate material discharge, low material purity and poor product quality. SUMMARY

[0003] The purpose of the utility model is to provide a tobacco shred air selection and impurity removing device which can finely screen the tobacco shred material and filter the material and impurities, and improve the material purity.

[0004] To achieve this purpose, the utility model adopts the following technical scheme: a tobacco shred air selection and impurity removing device, comprising an impurity removing box and an impurity removing mechanism, the top of the impurity removing box is provided with an inlet channel, the bottom is provided with a first discharge port and a second discharge port, and the two sides are provided with a blowing assembly and an air outlet corresponding in position, the first discharge port and the second discharge port are located between the blowing assembly and the air outlet; the impurity removing mechanism comprises a filtering assembly, a cleaning assembly and a driving assembly, the filtering assembly comprises a first filter screen covering above the first discharge port and a second filter screen covering above the second discharge port, the cleaning assembly comprises a straight rod and a plurality of cross rods, the cross rods are arranged perpendicular to the air outlet direction of the air outlet assembly, a plurality of the cross rods are connected to the straight rod in the air outlet direction of the air outlet assembly and located above the first filter screen and the second filter screen, and the driving assembly and the straight rod are connected to drive the cross rods to reciprocate in the air outlet direction of the air outlet assembly.

[0005] As a preferred, the straight rod is provided with a rack part, the driving assembly comprises a rotating rod and a sector gear, one end of the rotating rod penetrates into the impurity removing box and is provided with an eccentric shaft, the sector gear is rotationally connected with the inner wall of the impurity removing box and meshes with the rack part, the sector gear is provided with a waist-shaped hole, and the eccentric shaft is limited in the waist-shaped hole.

[0006] As preferred, the driving assembly further comprises a motor, and the tobacco wind cleaning device further comprises a feeding box, which is located above the cleaning box and communicates with the feeding channel, and a distributing assembly is arranged in the feeding box and can rotate, and the motor is installed above the feeding box and is in transmission connection with the distributing assembly and the rotating rod respectively.

[0007] As preferred, a transmission assembly is arranged between the motor and the rotating rod, which comprises a transmission rod, a first bevel gear and a second bevel gear, one end of the transmission rod is in transmission connection with the output shaft of the motor through a synchronous belt, the other end is connected with the first bevel gear, and the end of the rotating rod away from the sector gear is provided with the second bevel gear, which is in mesh with the first bevel gear.

[0008] As preferred, a support is connected to the top surface of the cleaning box, the support is provided with a mounting groove, and the feeding box is limited in the mounting groove.

[0009] As preferred, the cleaning mechanism further comprises two vibration assemblies, which are symmetrically arranged on both sides of the cleaning assembly, and each vibration assembly comprises a rotating shaft and a knocking hammer, the rotating shaft is in rotation connection with the cleaning box, and the knocking hammer is arranged on the rotating shaft in an inclined manner, the knocking hammers of the two cleaning assemblies are respectively overlapped above the first filter screen and the second filter screen, the horizontal rods located at both ends of the straight rod are provided with abutting members corresponding to the knocking hammers, and the abutting members can move along the corresponding horizontal rods to drive the knocking hammers to rotate.

[0010] As preferred, a plurality of knocking hammers are arranged in the direction of the rotating shaft, and the abutting members are arranged in one-to-one correspondence with the knocking hammers.

[0011] As preferred, the abutting member comprises a connecting rod and an abutting rod, the connecting rod is vertically arranged and has two ends connected with the horizontal rod and the abutting rod respectively, the abutting rod is arranged in an extending manner along the air outlet direction of the air outlet assembly towards the knocking hammer, and the tail of the knocking hammer is provided with a protruding portion capable of abutting against the abutting rod.

[0012] As preferred, the mesh number of the first filter screen is greater than that of the second filter screen.

[0013] As preferred, a guide groove is arranged in the cleaning box, the straight rod is connected with a sliding block, and the sliding block is limited in the guide groove.

[0014] The utility model discloses beneficial effect: through setting up the impurity removal mechanism, the tobacco wind selection impurity removal device works, and the fan starts and drive assembly drives cleaning assembly to start, and the straight rod of cleaning assembly drives the horizontal pole to sweep the tobacco material with impurity above the first filter screen and the second filter screen, and the even distribution of material exposes the middle lower layer impurity to the one side of blowing assembly, improves the winnowing efficiency of blowing assembly, and the horizontal pole and the first filter screen and the second filter screen cooperation of reciprocating movement can play the screening effect, and more delicate filter tobacco impurity, improve the purity of material, guarantee the finished product quality. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structure schematic diagram of tobacco wind selection impurity removal device of the utility model embodiment;

[0016] Figure 2 It is the installation schematic diagram of impurity removal mechanism of the utility model embodiment;

[0017] Figure 3 It is Figure 2 The enlarged view of A in middle;

[0018] Figure 4 It is the structure schematic diagram of impurity removal mechanism of the utility model embodiment;

[0019] Figure 5 It is the structure schematic diagram of another angle of tobacco wind selection impurity removal device of the utility model embodiment;

[0020] Figure 6 It is Figure 5 The enlarged view of B in middle.

[0021] In the drawing:

[0022] 100, impurity removal box;110, working cavity;111, inlet channel;112, guide groove;120, first discharge port;130, second discharge port;140, blowing assembly;150, air outlet;160, support;161, pipe;162, clamp;170, shaft seat;

[0023] 200, impurity removing mechanism; 210, filtering assembly; 211, first filter screen; 212, second filter screen; 220, cleaning assembly; 221, straight rod; 2211, rack part; 2212, sliding block; 222, cross rod; 2221, pressing piece; 2222, connecting rod; 2223, pressing rod; 230, driving assembly; 231, rotating rod; 2311, eccentric shaft; 2312, round block; 232, sector gear; 2321, waist-shaped hole; 233, motor; 2331, second transmission wheel; 234, transmission assembly; 2341, transmission rod; 2342, first bevel gear; 2343, second bevel gear; 2344, synchronous belt; 2345, first transmission wheel; 240, vibrating assembly; 241, rotating shaft; 242, knocking hammer; 2421, protruding part;

[0024] 300, feeding box; 310, feeding inlet; 320, right-angle plate. DETAILED DESCRIPTION

[0025] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model and are not limited to the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for the convenience of description, not all the structures.

[0026] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0027] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0028] In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in the description, and have no special meaning.

[0029] Referring to Figures 1 to 6 As shown in the drawings, according to the tobacco wind selection and impurity removal device provided by the embodiment of the present application, the device comprises an impurity removal box 100 and an impurity removal mechanism 200. The top of the impurity removal box 100 is provided with an inlet channel 111, the bottom is provided with a first discharge port 120 and a second discharge port 130, and the two sides are provided with a blowing assembly 140 and an air outlet 150 at corresponding positions. The blowing assembly 140 comprises an air duct arranged on one side of the impurity removal box 100, a fan is arranged in the air duct, and a dust screen is arranged on both sides of the air duct. The first discharge port 120 and the second discharge port 130 are located between the blowing assembly 140 and the air outlet 150, and are arranged in intervals along the air outlet direction of the blowing assembly 140.

[0030] The impurity removal mechanism 200 comprises a filtering assembly 210, a cleaning assembly 220 and a driving assembly 230. The filtering assembly 210 comprises a first filter screen 211 covering the first discharge port 120 and a second filter screen 212 covering the second discharge port 130. The cleaning assembly 220 comprises a straight rod 221 and a plurality of cross rods 222. The straight rod 221 is arranged along the air outlet direction of the blowing assembly 140 and is located on the same side of the first discharge port 120 and the second discharge port 130. The cross rods 222 are arranged perpendicular to the air outlet direction of the blowing assembly 140. The plurality of cross rods 222 are connected to the straight rod 221 in intervals along the air outlet direction of the blowing assembly 140 and are located above the first filter screen 211 and the second filter screen 212. The driving assembly 230 is connected to the straight rod 221 to drive the cross rods 222 to move back and forth along the air outlet direction of the blowing assembly 140. Optionally, the driving assembly 230 can be a push rod, a screw block 2212 or other linear module, which will not be described here.

[0031] It can be understood that by arranging the impurity removal mechanism 200, when the tobacco wind selection and impurity removal device is working, the fan is started and the driving assembly 230 drives the cleaning assembly 220 to start. The straight rod 221 of the cleaning assembly 220 drives the cross rods 222 to sweep the tobacco material with impurities above the first filter screen 211 and the second filter screen 212, evenly distributes the material, exposes the middle and lower impurities to one side of the blowing assembly 140, improves the winnowing efficiency of the blowing assembly 140, and the reciprocating cross rods 222 cooperate with the first filter screen 211 and the second filter screen 212 to play a screening role, more finely filter the tobacco impurities, improve the purity of the material, and ensure the quality of the finished product.

[0032] Further, the mesh number of the first filter screen 211 is greater than the mesh number of the second filter screen 212, that is, the diameter of the filter hole on the first filter screen 211 is smaller than the diameter of the filter hole on the second filter screen 212.

[0033] The mesh number of the first filter screen 211 is set to be greater than the mesh number of the second filter screen 212, so that the first filter screen 211 can filter impurities with an outer diameter greater than the tobacco material, effectively improving the filtering efficiency of the filtering assembly 210. At the same time, the differentiation degree of the first filter screen 211 and the second filter screen 212 can be increased to distinguish the corresponding installation of the first filter screen 211 and the second filter screen 212 by the user.

[0034] Referring to Figure 2 and Figure 3 It can be understood that the straight rod 221 is provided with a rack part 2211, the driving assembly 230 includes a rotating rod 231 and a sector gear 232, the outer wall of the impurity removal box 100 is provided with a shaft seat 170, and the rotating rod 231 is rotationally installed in the shaft seat 170. One end of the rotating rod 231 penetrates into the impurity removal box 100 and is provided with a circular block 2312, the circular block 2312 is provided with an eccentric shaft 2311, the sector gear 232 is rotationally connected with the inner wall of the impurity removal box 100 and is engaged with the rack part 2211, the sector gear 232 is provided with a waist-shaped hole 2321, one end of the waist-shaped hole 2321 is located at the center of the sector gear 232, the other end extends along the radial direction of the sector gear 232 and is arranged away from the rack part 2211, and the eccentric shaft 2311 is limited in the waist-shaped hole 2321.

[0035] The driving assembly 230 controls the rotation of the rotating rod 231, the rotating rod 231 drives the eccentric shaft 2311 to rotate, the eccentric shaft 2311 abuts against the inner wall of the waist-shaped hole 2321, thereby driving the sector gear 232 to rotate, and further driving the straight rod 221 to move through the rack part 2211, realizing the translation of the cross rod 222. By arranging the rack part 2211 and the sector gear 232, on the one hand, the transmission structure is simple and efficient, can adapt to the dust environment inside the impurity removal box 100, and ensures the service life of the impurity removal mechanism 200; on the other hand, the sector gear 232 and the rack part 2211 can be quickly reversely driven, so that the cross rod 222 can easily and naturally move periodically and reciprocally along the air outlet direction, improving the impurity removal efficiency of the impurity removal mechanism 200.

[0036] Referring to Figure 3 It can be understood that the impurity removal box 100 is provided with a guide groove 112, and the guide groove 112 is arranged along the air outlet direction. The straight rod 221 is connected with a sliding block 2212, and the sliding block 2212 is limited in the guide groove 112.

[0037] The guide groove 112 guides the slider 2212 to move, thereby guiding the straight rod 221 to move straight along the air outlet direction, effectively improving the movement stability of the straight rod 221. In some embodiments, multiple sliders 2212 can be provided, and the multiple sliders 2212 are arranged at intervals along the direction of the straight rod 221, thereby further improving the movement stability of the straight rod 221.

[0038] Reference Figure 4 As shown, it can be understood that the impurity removal mechanism 200 also includes two vibration components 240. The two vibration components 240 are symmetrically arranged on both sides of the cleaning component 220. The vibration component 240 includes a rotating shaft 241 and a hammer 242. The rotating shaft 241 is rotatably connected to the impurity removal box 100. The hammer 242 is inclinedly arranged on the rotating shaft 241. The hammers 242 of the two cleaning components 220 are respectively attached to the top of the first filter screen 211 and the second filter screen 212. The horizontal bars 222 located at both ends of the straight bar 221 are provided with pressing members 2221. The pressing members 2221 correspond to the hammers 242. The pressing members 2221 can move with the corresponding horizontal bars 222 to drive the hammers 242 to rotate.

[0039] By setting a hammer 242 and a pressing member 2221, the pressing member 2221 can move with the horizontal bar 222. When the vertical bar 221 moves to the limit position, the pressing member 2221 presses against the corresponding hammer 242, causing the hammer 242 to rotate. Then the vertical bar 221 moves in the opposite direction, and the pressing member 2221 disengages from the hammer 242. The tilted hammer 242 rotates back to its original position under the action of gravity and strikes the corresponding first filter screen 211 (or the corresponding second filter screen 212), causing the first filter screen 211 and the second filter screen 212 to vibrate. This prevents tobacco from sticking to the first filter screen 211 or prevents impurities from sticking to the second filter screen 212, further improving the filtration efficiency of the filter assembly 210 and ensuring that the first filter screen 211 and the second filter screen 212 are clean.

[0040] Furthermore, multiple hammers 242 are provided, and the multiple hammers 242 are spaced apart along the direction of the rotating shaft 241. The pressing member 2221 is provided in a one-to-one correspondence with the hammers 242.

[0041] By setting multiple hammers 242, the striking force of the hammers 242 on the first filter screen 211 or the second filter screen 212 can be increased, and the propagation range of the striking vibration can be increased, avoiding the problem of single-point striking by a single hammer 242, small vibration range, and incomplete cleaning of tobacco and impurities.

[0042] Furthermore, the pressing member 2221 includes a connecting rod 2222 and a pressing rod 2223. The connecting rod 2222 is vertically arranged and its two ends are connected to the crossbar 222 and the pressing rod 2223 respectively. The pressing rod 2223 extends towards the hammer 242 along the air outlet direction of the blower assembly 140. At this time, the pressing member 2221 is L-shaped perpendicular to the crossbar 222. The tail of the hammer 242 is provided with a protrusion 2421 that can abut against the pressing rod 2223. The protrusion 2421 protrudes towards the pressing member 2221 along the radial direction of the handle of the hammer 242.

[0043] By setting the connecting rod 2222 and the pressing rod 2223, the structure of the pressing member 2221 can be simplified, and the arrangement and processing of the pressing member 2221 can be facilitated. By setting the protrusion 2421, the physical distance between the pressing member 2221 and the hammer 242 in the blowing direction can be reduced, allowing the pressing member 2221 to quickly contact and press against the hammer 242, increasing the rotation angle of the hammer 242, and improving the striking force of the hammer 242.

[0044] Reference Figure 1 and Figure 5 As shown, the drive assembly 230 also includes a motor 233, and the tobacco air separation and impurity removal device also includes a feeding box 300. The feeding box 300 is located above the impurity removal box 100 and communicates with the feeding channel 111. The top of the feeding box 300 is provided with a feeding port 310, and a rotatable cloth assembly is provided inside the feeding box 300. The cloth assembly is located between the feeding port 310 and the feeding channel 111. Optionally, the cloth assembly includes a cleaning brush that fits against the inner wall of the feeding box 300 and a spiral blade located below the cleaning brush. The cleaning brush is a rotating body and is coaxial with the spiral blade. The motor 233 is mounted above the feeding box 300 through a right-angle plate 320 and is connected to the cloth assembly and the rotating rod 231 respectively.

[0045] By setting up the feeding box 300, the cloth assembly in the feeding box 300 can evenly transport the tobacco material to the feeding channel 111, avoiding the material from tangling and affecting subsequent impurity removal. By setting up the motor 233, on the one hand, the motor 233 simultaneously controls the rotation of the cloth assembly and the rotating rod 231, ensuring that the impurity removal mechanism 200 can start synchronously when the impurity removal device is feeding, and can stop synchronously when the impurity removal mechanism 200 stops feeding, improving the synchronization of the cloth assembly and the impurity removal mechanism 200 and increasing the automation level of the impurity removal device. On the other hand, it can save the cost and installation space required for setting up a separate drive device for the rotating rod 231, reducing the production and use cost of the impurity removal device and improving the integration of the impurity removal device.

[0046] Reference Figure 5 and Figure 6As shown, it can be understood that a transmission assembly 234 is provided between the motor 233 and the rotating rod 231. The transmission assembly 234 includes a transmission rod 2341, a first bevel gear 2342 and a second bevel gear 2343. One end of the transmission rod 2341 is provided with a first transmission wheel 2345, and the output shaft of the motor 233 is provided with a second transmission wheel 2331. The first transmission wheel 2345 is connected to the second transmission wheel 2331 through a synchronous belt 2344. The other end of the transmission rod 2341 is connected to the first bevel gear 2342. The end of the rotating rod 231 away from the sector gear 232 is provided with a second bevel gear 2343, and the second bevel gear 2343 meshes with the first bevel gear 2342.

[0047] By setting up a transmission rod 2341, which controls the rotation of the rotating rod 231 through the first bevel gear 2342 and the second bevel gear 2343, the transmission structure between the motor 233 and the rotating rod 231 can be simplified, making it easier for users to arrange and use, and improving transmission efficiency and stability.

[0048] Furthermore, a bracket 160 is connected to the top surface of the impurity removal box 100. The bracket 160 is provided with an annular clamp 162, which forms an installation groove. The feeding box 300 is limited to the installation groove.

[0049] By fixing the feeding box 300 with the bracket 160, the installation stability and ease of installation of the feeding box 300 can be effectively improved, while also enhancing the overall integrity of the impurity removal device. Furthermore, a conduit 161 for the transmission rod 2341 can be installed on one side of the bracket 160, effectively improving the installation stability of the transmission rod 2341.

[0050] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A tobacco shred air separation and impurity removal device, characterized in that, include: The impurity removal box (100) has a feeding channel (111) at the top and a first discharge port (120) and a second discharge port (130) at the bottom. A blowing assembly (140) and an air outlet (150) are provided on both sides, with the first discharge port (120) and the second discharge port (130) located between the blowing assembly (140) and the air outlet (150). The impurity removal mechanism (200) includes a filter assembly (210), a cleaning assembly (220), and a drive assembly (230). The filter assembly (210) includes a first filter screen (211) covering the first discharge port (120) and a second filter screen (212) covering the second discharge port (130). The cleaning assembly (220) includes a straight rod (221) and a plurality of crossbars (222). The crossbars (222) are arranged perpendicular to the air outlet direction of the blowing assembly (140). The plurality of crossbars (222) are connected to the straight rod (221) at intervals along the air outlet direction of the blowing assembly (140) and are located above the first filter screen (211) and the second filter screen (212). The drive assembly (230) is connected to the straight rod (221) to drive the crossbars (222) to reciprocate along the air outlet direction of the blowing assembly (140).

2. The tobacco air separation and impurity removal device according to claim 1, characterized in that, The straight rod (221) is provided with a rack portion (2211), and the drive assembly (230) includes a rotating rod (231) and a sector gear (232). One end of the rotating rod (231) passes into the impurity removal box (100) and is provided with an eccentric shaft (2311). The sector gear (232) is rotatably connected to the inner wall of the impurity removal box (100) and meshes with the rack portion (2211). The sector gear (232) is provided with a waist-shaped hole (2321), and the eccentric shaft (2311) is limited to the waist-shaped hole (2321).

3. The tobacco air separation and impurity removal device according to claim 2, characterized in that, The drive assembly (230) also includes a motor (233), and the tobacco air separation and impurity removal device also includes a feeding box (300). The feeding box (300) is located above the impurity removal box (100) and is connected to the feeding channel (111). The feeding box (300) is provided with a rotatable cloth assembly. The motor (233) is installed above the feeding box (300) and is connected to the cloth assembly and the rotating rod (231) respectively.

4. The tobacco air separation and impurity removal device according to claim 3, characterized in that, A transmission assembly (234) is provided between the motor (233) and the rotating rod (231). The transmission assembly (234) includes a transmission rod (2341), a first bevel gear (2342), and a second bevel gear (2343). One end of the transmission rod (2341) is connected to the output shaft of the motor (233) via a synchronous belt (2344), and the other end is connected to the first bevel gear (2342). The end of the rotating rod (231) away from the sector gear (232) is provided with a second bevel gear (2343), which meshes with the first bevel gear (2342).

5. The tobacco air separation and impurity removal device according to claim 3, characterized in that, The top surface of the impurity removal box (100) is connected to a bracket (160), the bracket (160) is provided with a mounting groove, and the feeding box (300) is located in the mounting groove.

6. The tobacco air separation and impurity removal device according to any one of claims 1-5, characterized in that, The impurity removal mechanism (200) further includes two vibration components (240), which are symmetrically arranged on both sides of the cleaning component (220). Each vibration component (240) includes a rotating shaft (241) and a hammer (242). The rotating shaft (241) is rotatably connected to the impurity removal box (100). The hammer (242) is inclinedly arranged on the rotating shaft (241), and the hammers (242) of the two cleaning components (220) are respectively attached to the top of the first filter screen (211) and the second filter screen (212). The horizontal bar (222) located at both ends of the straight bar (221) is provided with a pressing member (2221). The pressing member (2221) corresponds to the hammer (242) in position. The pressing member (2221) can follow the corresponding horizontal bar (222) to move to drive the hammer (242) to rotate.

7. The tobacco air separation and impurity removal device according to claim 6, characterized in that, Multiple hammers (242) are provided, and the multiple hammers (242) are spaced apart along the direction of the rotating shaft (241). The pressing member (2221) is provided in a one-to-one correspondence with the hammers (242).

8. The tobacco air separation and impurity removal device according to claim 6, characterized in that, The pressing member (2221) includes a connecting rod (2222) and a pressing rod (2223). The connecting rod (2222) is arranged vertically and its two ends are connected to the crossbar (222) and the pressing rod (2223) respectively. The pressing rod (2223) extends towards the hammer (242) along the air outlet direction of the blower assembly (140). The tail of the hammer (242) is provided with a protrusion (2421) that can abut against the pressing rod (2223).

9. The tobacco air separation and impurity removal device according to any one of claims 1-5, characterized in that, The mesh count of the first filter (211) is greater than that of the second filter (212).

10. The tobacco air separation and impurity removal device according to any one of claims 1-5, characterized in that, The impurity removal box (100) is provided with a guide groove (112), and the straight rod (221) is connected to a slider (2212), which is limited to the guide groove (112).

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