Comb mechanism and air separation device having a comb mechanism

Abstract

The present application belongs to the technical field of cigarette processing and manufacturing, and discloses a combing mechanism and an air selection device with the combing mechanism. The combing mechanism comprises a first carding piece, a driving assembly and a feeder. The driving assembly is in transmission connection with the first carding piece and drives the first carding piece to rotate. The feeder comprises an inlet end and an outlet end. The tobacco bunch moves from the inlet end to the outlet end. The feeder is provided with a through groove for allowing loose tobacco to pass through along the direction from the inlet end to the outlet end. The first carding piece is located at a position close to the outlet end. The tangent direction of the first carding piece when rotating is the direction from the inlet end to the outlet end. The rotating first carding piece produces a combing effect on the tobacco bunch, so as to comb the tobacco bunch into loose tobacco. The contact area of the first carding piece with the tobacco bunch is large, that is, the pressure intensity borne by the tobacco bunch is smaller, so that the probability of the tobacco bunch breaking is smaller, and the whole tobacco rate of the tobacco after air selection is improved.

Description

Technical Field

[0001] This invention relates to the technical field of cigarette processing and manufacturing, and in particular to a combing mechanism and an air separation device having a combing mechanism. Background Technology

[0002] During cigarette manufacturing, the tobacco shreds undergo an air-separation process. This process uses the principle of airflow suspension to remove impurities such as stems, metal, and sand from the tobacco shreds, thus selecting qualified loose tobacco shreds. Before air separation, the tobacco shreds undergo a drying process. During this process, some tobacco shreds may clump together to form clumps. If these clumps are not processed, they will be removed during air separation, resulting in waste of raw materials. Therefore, the tobacco clumps are usually combed and loosened before air separation.

[0003] Most existing tobacco combing mechanisms adopt a double-roller nailing structure, which means that fine nails are installed on two adjacent rollers. The tobacco clumps pass between the two rollers and are rolled by the nails on the two rollers to achieve a loosening effect.

[0004] The existing combing mechanism has fine nails on the rollers, which can easily break the tobacco shreds, resulting in a lot of tobacco shred debris after combing. This reduces the whole tobacco shred rate after air separation, and consequently reduces the qualified rate of the tobacco shreds. Summary of the Invention

[0005] The purpose of this invention is to provide a combing mechanism and an air separation device having the combing mechanism, which can reduce the debris generated after tobacco is combed.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A combing mechanism, comprising:

[0008] A first carding plate and a driving assembly, wherein the driving assembly is connected to the first carding plate in a transmission manner, and the driving assembly drives the first carding plate to rotate;

[0009] The feeder includes a feed end and a discharge end, and the tobacco shreds move from the feed end to the discharge end; the feeder has a through groove along the direction from the feed end to the discharge end for loose tobacco shreds to pass through, and the first combing plate is located near the discharge end, and the tangential direction of the first combing plate when it rotates is the direction from the feed end to the discharge end.

[0010] Preferably, the first combing piece includes a combing section and a cutting section with a convex angle, the cutting section being located on one side of the combing section along the rotation direction of the first combing piece; the outer periphery of the combing section is a convex curved surface.

[0011] Preferably, the drive assembly includes a power component and a rotating shaft, the rotating shaft being connected to the power component in a transmission manner, and the power component driving the rotating shaft to rotate around an axis; the first combing sheet is disposed on the rotating shaft.

[0012] Preferably, the rotating shaft has a combing plane formed by the rotation of the first combing plate along the axial direction, and the first combing plate in each combing plane is correspondingly arranged with the through groove.

[0013] Preferably, the comb plane is composed of a plurality of first combing plates, and the distance between adjacent first combing plates in each comb plane is equal.

[0014] Preferably, the feeder includes a fixed plate and multiple guide plates, which are spaced apart on the fixed plate; the through groove is the gap between adjacent guide plates; the guide plate has an inclined surface, one end of the inclined surface of the guide plate is the feeding end, and the other end of the inclined surface of the guide plate is the discharging end, and the tobacco shreds slide from the feeding end to the discharging end under the action of gravity.

[0015] Preferably, the assembly also includes a mounting rod and a second combing plate; the mounting rod is positioned between adjacent first combing plates along the rotation axis; one end of the second combing plate is rotatably connected to the mounting rod, and the other end is a free end; the rotation radius of the second combing plate is greater than the rotation radius of the first combing plate.

[0016] Preferably, the free end of the second combing piece extends into the through groove.

[0017] The present invention also provides an air separation device, comprising a first air separator, a first combing mechanism, and a second air separator arranged sequentially along the tobacco conveying direction;

[0018] Preferably, the first combing mechanism is the combing mechanism described above.

[0019] The beneficial effects of this invention are:

[0020] During the process of tobacco shreds entering the discharge end from the feed end, most of the loose tobacco shreds pass directly through the trough without contacting the first combing plate, thus preventing the fragile loose tobacco shreds from being broken up by the first combing plate and producing debris. The tobacco shred clumps fall from the discharge end onto the rotating first combing plate. Since the tangential direction of the rotation of the first combing plate is from the feed end to the discharge end, that is, the tangential direction of the rotation of the first combing plate is the same as the direction of movement of the tobacco shred clumps, the rotating first combing plate produces a combing-like effect on the tobacco shred clumps, thereby combing the tobacco shred clumps into loose tobacco shreds. Compared with the nails on the combing rollers of the prior art, the contact area between the first combing plate and the tobacco shred clumps is larger, that is, the pressure on the tobacco shred clumps is smaller, thus reducing the probability of the tobacco shred clumps breaking and improving the whole tobacco shred rate after air classification. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a combing mechanism according to Embodiment 1 of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the first combing plate in Embodiment 1 of the combing mechanism of the present invention;

[0023] Figure 3 This is a schematic diagram of another structure of the first combing plate in Embodiment 1 of the combing mechanism of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of an embodiment 1 of the combing mechanism of the present invention from another perspective;

[0025] Figure 5 This is a schematic diagram of the overall structure of a combing mechanism according to Embodiment 2 of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of a combing mechanism embodiment 2 of the present invention from another perspective;

[0027] Figure 7 This is a schematic diagram of the overall structure of an embodiment 3 of the air separation device of the present invention;

[0028] Figure 8 This is a schematic diagram of the first combing mechanism in Embodiment 3 of the air separation device of the present invention;

[0029] Figure 9 This is a schematic diagram of the overall structure of an embodiment 4 of the air separation device of the present invention;

[0030] Figure 10 This is a schematic diagram of the third combing mechanism in Embodiment 4 of the air separation device of the present invention.

[0031] In the diagram: 1. First combing plate; 101. Cutting section; 102. Combing section; 103. Convex corner; 2. Feeder; 201. Feeding end; 202. Discharge end; 203. Fixing plate; 204. Guide plate; 205. Through groove; 3. Power component; 4. Rotating shaft; 5. Combing plane; 6. Clamping plate; 7. Mounting rod; 8. Second combing plate; 9. First air classifier; 10. Second air classifier; 11. First belt conveyor; 12. Large gear; 13. Small gear; 14. First combing mechanism; 15. Second combing mechanism; 16. Second belt conveyor; 17. Third belt conveyor. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0033] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this embodiment, the terms "upper" and "lower," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0036] Example 1

[0037] Reference Figure 1 This is an embodiment of a combing mechanism of the present invention, which includes a first combing plate 1, a driving assembly and a feeder 2. The driving assembly is connected to the first combing plate 1 in a transmission manner, and the driving assembly drives the first combing plate 1 to rotate.

[0038] The feeder 2 includes a feed end 201 and a discharge end 202. The tobacco shreds move from the feed end 201 to the discharge end 202. The feeder 2 has a through groove 205 for loose tobacco shreds to pass through along the direction from the feed end 201 to the discharge end 202. The first combing plate 1 is located near the discharge end 202. The tangential direction of the first combing plate 1 when it rotates is the direction from the feed end 201 to the discharge end 202.

[0039] The raw tobacco is fed into the feed end 201 of the feeder 2. The raw tobacco moves from the feed end 201 to the discharge end 202. During the movement, loose tobacco, due to its small size, will leak out from the through groove 205, so that the loose tobacco can be directly collected for the next process. Other tobacco that has formed clumps cannot pass through the through groove 205, but continues to move to the discharge end 202, and then falls from the discharge end 202 onto the rotating first combing plate 1. The first combing blade 1 rotates around an axis under the drive of the drive assembly. When it rotates, the outer periphery of the first combing blade 1 comes into contact with the tobacco clump. Since the tangential direction of the rotation of the first combing blade 1 is the same as the direction of movement of the tobacco clump, the rotating first combing blade 1 produces a combing effect on the tobacco clump, thereby combing the tobacco clump into loose tobacco shreds. If the rotation direction of the first combing blade 1 is opposite to the direction of the tobacco clump, the tobacco clump will be directly crushed by the first combing blade 1 when it falls from the discharge end 202.

[0040] In this embodiment, the first combing piece 1 includes a cutting part 101 with a convex angle 103 and a combing part 102. The cutting part 101 is located at one end of the combing part 102 along the rotation direction of the first combing piece 1; the outer periphery of the combing part 102 is a curve with a continuous derivative.

[0041] The cutting part 101 is located at one end of the combing part 102 along the rotation direction of the first combing plate 1, allowing the cutting part 101 to contact the tobacco clump before the combing part 102. The cutting part 101 has a convex angle 103 that can penetrate the tobacco clump, ensuring that the subsequent combing part 102 can continuously cut into the tobacco clump to achieve a "hair combing" effect, thereby loosening and dispersing the tobacco clump. To prevent the combing part 102 from breaking the tobacco clump during the cutting process, the outer periphery of the combing part 102 needs to be a continuously reciprocating curve to ensure that the outer periphery of the combing part 102 is smooth and continuous, preventing sharp edges from breaking the tobacco clump.

[0042] Specifically, the shape of the first combing piece 1 can be arbitrary, as long as it satisfies the requirements of a cutting portion 101 with a convex angle 103 and a combing portion 102 with a smooth and continuous outer periphery. For example:

[0043] Reference Figure 2The shape of the first combing piece 1 can be semi-elliptical. In this case, the long axis side of the first combing piece 1 is the cutting part 101, and the position where the long axis side and the arc side meet is the convex angle 103 of the cutting part 101, and the arc side part is the combing part 102.

[0044] Reference Figure 3 The first comb piece 1 can be Figure 3 The irregular shape shown consists of a triangle and an arc. The protrusion formed by the triangular part is the cutting part 101, and the arc part is the combing part 102.

[0045] The first combing piece 1 can also be arc-shaped. In this case, both radial sides of the first combing piece 1 are cutting portions 101. The intersection of the radial side and the arc side is the cutting portion 101, and the intersection of the radial side and the arc side is the convex angle 103 of the cutting portion 101. The arc side is the combing portion 102. (Refer to...) Figure 4 In this embodiment, the first combing piece 1 is in the shape of a quarter-circle arc.

[0046] In this embodiment, the driving component includes a power component 3 and a rotating shaft 4. The rotating shaft 4 is connected to the power component 3 in a transmission manner, and the power component 3 drives the rotating shaft 4 to rotate around the axis. The first combing piece 1 is disposed on the rotating shaft 4.

[0047] Specifically, the power component 3 can be a device such as an electric motor or hydraulic motor that can drive the rotating shaft 4 to rotate around its axis. In this embodiment, an electric motor is selected. The first combing piece 1 is fixed to the side wall of the rotating shaft 4, so that the first combing piece 1 rotates with the rotating shaft 4. The first combing piece 1 can be fixed to the rotating shaft 4 by welding, riveting, bolting, or bonding. In this embodiment, welding is selected. The output end of the power component 3 can be directly connected to the rotating shaft 4, or it can be connected to the rotating shaft 4 through chain drive or belt drive, or it can be connected to the rotating shaft 4 through a reducer. In this embodiment, the output end of the power component 3 is connected to the rotating shaft 4 through chain drive.

[0048] In this embodiment, the rotating shaft 4 is provided with a comb plane 5 formed by the rotation of the first combing plate 1 along the axial direction, and the comb plane 5 is provided in a one-to-one correspondence with the through groove 205.

[0049] Since the first combing plate 1 rotates around the axis of the rotating shaft 4, it forms a circular surface, which is the combing plane 5. The circumference of the combing plane 5 is the part that combs the tobacco clump. To achieve a better combing effect, the combing plane 5 is perpendicular to the axis of the rotating shaft 4, and the center of the combing plane 5 coincides with the axis of the rotating shaft 4, that is, the first combing plate 1 is vertically set on the side wall of the rotating shaft 4. Each combing plane 5 is located at the bottom of each through groove 205, so that the tobacco clump can be fully combed without breaking. If there are multiple combing planes 5 at the bottom of each through groove 205, it will cause a large impact on the tobacco clump, which will easily lead to the tobacco clump breaking.

[0050] In this embodiment, the comb plane 5 is composed of a plurality of first combing plates 1, and the distance between adjacent first combing plates 1 is equal.

[0051] Specifically, if the combing plane 5 contains only one first combing blade 1, then in order to match the speed of the tobacco shred feeding, the rotation speed of the shaft 4 must be very high. However, excessively high rotation speed will cause the first combing blade 1 to cause a large impact on the tobacco shred, easily causing the tobacco shred to break. Therefore, each combing plane 5 needs to be equipped with more than one first combing blade 1, and the number of first combing blades 1 should not be too large. If the number of first combing blades 1 is too large, the cutting part 101 will not have enough space to cut into the tobacco shred due to the dense arrangement of the first combing blades 1. The number of first combing blades 1 is preferably two to four. In this embodiment, the number of first combing blades 1 is preferably two. In order to have sufficient spacing between the two first combing blades 1, the two first combing blades 1 are symmetrically arranged on the shaft 4 about the axis of the shaft 4. In order to ensure that the force is even when the shaft 4 rotates and to avoid damage to the shaft 4 after long-term rotation, the positions of the first combing blades 1 of two adjacent combing planes 5 do not overlap, and the distance between two adjacent first combing blades 1 is equal. Specifically, refer to Figure 4 For ease of explanation, a rectangular coordinate system is established with the axis of rotation 4 as the origin. Then, the first combing plate 1 of the first combing plane 5 is arranged in the first quadrant and the third quadrant, the first combing plate 1 of the second combing plane 5 is arranged in the second quadrant and the fourth quadrant, the first combing plate 1 of the third combing plane 5 is arranged in the first quadrant and the third quadrant, and so on.

[0052] In this embodiment, the feeder 2 includes a fixed plate 203 and a plurality of guide plates 204, which are spaced apart on the fixed plate 203; the through groove 205 is the gap between adjacent guide plates 204; the guide plate 204 has an inclined surface, one end of which is the feed end 201 and the other end of which is the discharge end 202, and the tobacco shreds slide from the feed end 201 to the discharge end 202 under the action of gravity.

[0053] Specifically, the combing mechanism also includes two opposing clamping plates 6. The two ends of the rotating shaft 4 are respectively rotatably inserted through the two clamping plates 6, and the two ends of the fixing plate 203 are also respectively fixed to the two clamping plates 6 by bolts. The shape of the clamping plates 6 can be arbitrary, as long as its area can accommodate the rotating shaft 4 and the fixing plate 203. The shape of the fixing plate 203 can also be arbitrary, as long as the direction in which the guide plates 204 are arranged on the fixing plate 203 is the same as the axial direction of the rotating shaft 4. In this embodiment, the fixing plate 203 is rectangular, and its length direction is the same as the axial direction of the rotating shaft 4. Multiple guide plates 204 are fixed to the fixing plate 203 along its length direction. The number of guide plates 204 can be adjusted according to actual production needs. In this embodiment, there are sixteen guide plates 204, which can generate fifteen through slots 205. The slope at the top of the guide plate 204 can be formed by the inclined setting of the fixing plate 203, causing the guide plate 204 to tilt and thus forming a slope at the top of the guide plate 204, or it can be a slope inherent in the shape of the guide plate 204 itself. The shape of the guide plate 204 can be arbitrary, as long as the length of its slope is sufficient for the loose tobacco shreds to fall from the channel 205 during the sliding process. In this embodiment, the shape of the guide plate 204 is a right-angled triangle, and the hypotenuse of the guide plate 204 is the slope. Since the guide plate 204 is a thin plate, the triangular guide plate 204 has high structural strength and is not easily deformed. The fixing plate 203 is also inclined, and the inclination direction is the same as that of the slope of the guide plate 204. The feed end 201 of the guide plate 204 is fixed to the top wall of the fixing plate 203. This arrangement minimizes the area of ​​the through groove 205 blocked by the fixing plate 203, preventing loose tobacco from being blocked by the fixing plate 203 as it slides down the through groove 205. The guide plate 204 can be fixed to the fixing plate 203 by welding, riveting, bolting, etc. In this embodiment, welding is selected.

[0054] Example 2

[0055] Reference Figure 5 This embodiment is another embodiment of the combing mechanism of the present invention. The difference between this embodiment and embodiment 1 is that the combing mechanism further includes a mounting rod 7 and a second combing plate 8. The mounting rod 7 is disposed between adjacent first combing plates 1; one end of the second combing plate 8 is rotatably connected to the mounting rod 7, and the other end is a free end; the rotation radius of the second combing plate 8 is greater than the rotation radius of the first combing plate 1.

[0056] The mounting rod 7 can be connected to the first combing plate 1 in one of the following ways: two adjacent first combing plates 1 located on the same straight line parallel to the rotating shaft 4 can be connected by a mounting rod 7. In this case, both ends of the mounting rod 7 are fixedly connected to the first combing plate 1 by welding, bonding, riveting, etc. Alternatively, the mounting rod 7 can pass through all the first combing plates 1 on the same straight line parallel to the rotating shaft 4. (Refer to...) Figure 6This embodiment employs this method. Since the mounting rod 7 is connected to the first carding blade 1, the mounting rod 7 rotates with the first carding blade 1. The mounting rod 7 is a cylindrical rod, and an annular groove is provided on the mounting rod 7 corresponding to the arrangement of the second carding blades 8. The second carding blades 8 rotate through the annular groove, allowing them to rotate freely around the mounting rod 7. Simultaneously, the axial freedom of the second carding blades 8 is restricted by the annular groove, preventing them from moving axially along the mounting rod 7. The shape of the second carding blade 8 can be arbitrary, as long as its center of gravity is located at the end furthest from the mounting rod 7, and the radius of the rotation plane formed when the second carding blade 8 rotates is greater than the radius of the comb plane 5. In this embodiment, the second carding blade 8 is rectangular, with one end of its length connected to the mounting rod 7. This ensures that the center of gravity of the second carding blade 8 is located at the end furthest from the mounting rod 7, allowing the second carding blade 8 to rotate with the mounting rod 7 under centrifugal force and form a stable rotation plane. The radius of the rotating plane of the second combing plate 8 is set to be greater than the radius of the combing plane 5 to ensure that the second combing plate 8 contacts the tobacco bundle before the first combing plate 1. This is because the second combing plate 8 is designed to comb tobacco bundles with low moisture content and finer fibers. These tobacco bundles are more fragile. Since the second combing plate 8 can rotate freely and is not fixed, when the second combing plate 8 contacts the tobacco bundle, it will rebound due to the obstruction and rotate in the opposite direction for a short distance. Therefore, the second combing plate 8 will not cause a large impact on the tobacco bundle. While ensuring the combing effect on fragile tobacco bundles, it will not cause a large impact on them. After being combed by the second combing plate 8, the fragile tobacco bundles will fall out of the through groove 205. The more solid tobacco bundles will not be combed by the second combing plate 8. These tobacco bundles will continue to slide down until they come into contact with the first combing plate 1 and are combed by the first combing plate 1.

[0057] Depending on the actual situation, several second combing plates 8 can be provided for each through slot 205. In this embodiment, each through slot 205 corresponds to a second combing plate 8 and a first combing plate 1. The first combing plate 1 and the second combing plate 8 are arranged alternately along the direction of the rotation axis 4.

[0058] In this embodiment, the free end of the second combing piece 8 extends into the through groove 205.

[0059] Reference Figure 6 In order to ensure that the fragile tobacco clumps can first come into contact with the second combing plate 8 and have enough time to slide down from the through groove 205, the end of the second combing plate 8 away from the mounting rod 7 is inserted into the through groove 205. That is, the second combing plate 8 and the guide plate 204 partially overlap in the direction of the axis of the rotating shaft 4. This allows the fragile tobacco clumps to be combed by the second combing plate 8 before they move to the discharge end 202, while the first combing plate 1 is at a certain distance from the discharge end 202 of the guide plate 204.

[0060] Example 3

[0061] Reference Figure 7 This is an embodiment of an air separation device of the present invention, which includes a first air separator 9, a first combing mechanism 14 and a second air separator 10 arranged sequentially along the tobacco conveying direction. In this embodiment, the first combing mechanism 14 is the combing mechanism in embodiment 1.

[0062] The air separation device also includes a first belt conveyor 11 for feeding. The tobacco clumps screened out by the first air separator 9 fall from the outlet of the first air separator 9 onto the first belt conveyor 11. The first belt conveyor 11 transports the tobacco clumps to the first combing mechanism 14. (Refer to...) Figure 9 The first combing mechanism 14 is installed on the first belt conveyor 11. The two clamps 6 of the first combing mechanism 14 are respectively fixed to the two ends of the belt roller of the first belt conveyor 11 by bolts, so that the tobacco shreds transported by the first belt conveyor 11 can fall directly to the feed end 201 of the first combing mechanism 14.

[0063] Reference Figure 8 In this embodiment, the power component 3 is installed at one end of the belt roller of the first belt conveyor 11, and a large gear 12 is provided at the other end of the belt roller of the first belt conveyor 11. A small gear 13 is installed at one end of the rotating shaft 4 of the first combing mechanism 14. The diameter of the small gear 13 is much smaller than that of the large gear 12. The large gear 12 and the small gear 13 are connected by a chain. The power component 3 drives the belt roller to rotate, which in turn drives the large gear 12 to rotate. The large gear 12 drives the small gear 13 to rotate. In this way, by setting up a power component 3, the belt roller and the rotating shaft 4 can be driven to rotate at the same time. At the same time, the rotation speed of the rotating shaft 4 is much greater than that of the belt roller, ensuring that the rotation speed of the first combing plate 1 is greater than the sliding speed of the tobacco ball. At this time, with the tobacco ball as the reference, the tobacco ball can be approximately considered to be stationary relative to the first combing plate 1, so that the first combing plate 1 can fully contact the tobacco ball and achieve a good combing effect. After being combed by the first combing mechanism 14, the tobacco shreds fall onto the feed conveyor belt of the second air classifier 10, where they then enter for a second fine air classification. In this embodiment, the first belt conveyor 11, the first air classifier 9, and the second air classifier 10 are all commercially available products.

[0064] Example 4

[0065] Reference Figure 9 This is another embodiment of an air separation device of the present invention, which includes a second combing mechanism 15, a first air separator 9, a first combing mechanism 14, and a second air separator 10 arranged sequentially along the tobacco conveying direction; the second combing mechanism 15 is the combing mechanism in embodiment 1; the first combing mechanism 14 is the combing mechanism in embodiment 2.

[0066] The air separation device in this embodiment also includes a second belt conveyor 16 and a third belt conveyor 17. The second belt conveyor 16 is used to convey tobacco shreds to the first air separator 9, and the third belt conveyor 17 is used to convey tobacco shreds to the second air separator 10. A second combing mechanism 15 is mounted on the second belt conveyor 16, and a first combing mechanism 14 is mounted on the third belt conveyor 17. (Refer to...) Figure 8 , Figure 10 The way in which the second combing mechanism 15 is installed on the second belt conveyor 16 and the way in which the first combing mechanism 14 is installed on the third belt conveyor 17 are the same as the way in which the first combing mechanism 14 is installed on the first belt conveyor 11 in Embodiment 3.

[0067] The tobacco material requiring air separation first enters the second combing mechanism 15 via the second belt conveyor 16 for the first combing operation, and then undergoes preliminary air separation via the first air separator 9. The tobacco clumps screened out by the first air separator 9 then fall onto the third belt conveyor 17, which conveys them to the first combing mechanism 14. Since the tobacco clumps conveyed by the third belt have already passed through the second combing mechanism 15 and the first air separator 9, they are all small in size and have a low moisture content. Therefore, it is suitable to use the combing mechanism in Example 2 as the first combing mechanism 14 for combing processing. In this example, the first air separator 9, the second air separator 10, the second belt conveyor 16, and the third belt conveyor 17 are all commercially available products.

[0068] By performing preliminary combing through the second combing mechanism 15 and then preliminary air separation, the amount of material entering the second air separator 10 can be greatly reduced. By combing through the first combing mechanism 14 and then performing air separation through the second air separator 10, the effect of fine air separation is achieved, which reduces the amount of tobacco shreds in the impurities finally removed by the second air separator 10 to about 1%, greatly reducing raw material consumption.

[0069] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. 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 the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A combing mechanism, characterized in that, include: A first carding plate and a driving assembly, wherein the driving assembly is pulsatorically connected to the first carding plate and drives the first carding plate to rotate; the driving assembly includes a power component and a rotating shaft, wherein the rotating shaft is pulsatorically connected to the power component and the power component drives the rotating shaft to rotate around an axis; the first carding plate is disposed on the rotating shaft; The feeder includes an inlet end and an outlet end, and the tobacco shreds move from the inlet end to the outlet end; the feeder has a through groove along the direction from the inlet end to the outlet end for loose tobacco shreds to pass through, and the first combing plate is located near the outlet end, and the tangential direction of the first combing plate when it rotates is the direction from the inlet end to the outlet end. The first combing plate includes a combing section and a cutting section with a convex angle. The cutting section is located on one side of the combing section along the rotation direction of the first combing plate. The outer periphery of the combing section is a convex curved surface. The combing mechanism further includes a mounting rod and a second combing plate; the mounting rod is disposed between adjacent first combing plates along the rotation axis; one end of the second combing plate is rotatably connected to the mounting rod, and the other end is a free end; the rotation radius of the second combing plate is greater than the rotation radius of the first combing plate; The rotating shaft is provided with a comb plane formed by the rotation of the first comb plate along the axial direction, and the first comb plate in each comb plane is correspondingly arranged with the through groove; The comb plane is composed of a plurality of first combing plates, and the distance between adjacent first combing plates in each comb plane is equal. The feeder includes a fixed plate and multiple guide plates, which are spaced apart on the fixed plate; the through groove is the gap between adjacent guide plates; each guide plate has an inclined surface, one end of which is the feed end and the other end is the discharge end, and the tobacco shreds slide from the feed end to the discharge end under the action of gravity; The free end of the second combing piece extends into the through groove.

2. An air separation device, characterized in that, It includes a first air separator, a first combing mechanism, and a second air separator arranged sequentially along the tobacco conveying direction; The first combing mechanism is the combing mechanism as described in claim 1.

3. The air separation device according to claim 2, characterized in that, A second combing mechanism is provided upstream along the direction of tobacco shred conveying; The second combing mechanism includes: A first carding plate and a driving assembly, wherein the driving assembly is connected to the first carding plate in a transmission manner, and the driving assembly drives the first carding plate to rotate; The feeder includes a feed end and a discharge end, and the tobacco shreds move from the feed end to the discharge end; the feeder has a through groove along the direction from the feed end to the discharge end for loose tobacco shreds to pass through, and the first combing plate is located near the discharge end, and the tangential direction of the first combing plate when it rotates is the direction from the feed end to the discharge end.

4. The air separation device according to claim 3, characterized in that, The first combing plate of the second combing mechanism includes a combing section and a cutting section with a convex angle. The cutting section is located on one side of the combing section along the rotation direction of the first combing plate. The outer periphery of the combing section is a convex curved surface.

5. The air separation device according to claim 3, characterized in that, The driving component of the second combing mechanism includes a power component and a rotating shaft. The rotating shaft is connected to the power component in a transmission manner, and the power component drives the rotating shaft to rotate around an axis. The first combing plate is disposed on the rotating shaft.

6. The air separation device according to claim 5, characterized in that, The rotating shaft has a comb plane formed by the rotation of the first combing plate along the axial direction, and the first combing plate in each comb plane is correspondingly arranged with the through groove.

7. The air separation device according to claim 6, characterized in that, The comb plane is composed of a plurality of first combing plates, and the distance between adjacent first combing plates in each comb plane is equal.

8. The air separation device according to claim 3, characterized in that, The feeder of the second combing mechanism includes a fixed plate and multiple guide plates, which are spaced apart on the fixed plate; the through groove is the gap between adjacent guide plates; the guide plate has an inclined surface, one end of the inclined surface of the guide plate is the feed end, and the other end of the inclined surface of the guide plate is the discharge end, and the tobacco shreds slide from the feed end to the discharge end under the action of gravity.

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