Long tobacco shred screening and cutting system

Abstract

The invention relates to a long tobacco shred screening and cutting system which comprises a main line conveying belt machine, a main line tobacco cutter, a loosening device, a screening device and a tobacco shred rotary beating device, and the main line conveying belt machine is sequentially provided with a first input end, a first output end, a second input end and a second output end in the conveying direction; the main line tobacco cutter is arranged at the first input end of the main line belt conveyor, the loosening device is connected with the first output end of the main line belt conveyor, the screening device is arranged at the output end of the loosening device and used for screening long tobacco shreds and medium-short tobacco shreds, and the tobacco shred rotary beating device is arranged at the output end of the screening device and suitable for cutting the long tobacco shreds into the medium-short tobacco shreds in a rotary beating mode. The output end of the tobacco shred rotary beating device is connected with the second input end of the main line conveying belt machine, tobacco shred cutting is completed, a large amount of long tobacco shred which does not meet the standard is produced in the cutting process, loosening, screening and rotary beating cutting are conducted on the long tobacco shred, and the cut medium-short tobacco shred meeting the standard is conveyed to the main line conveying belt machine for the next procedure.

Description

TECHNICAL FIELD

[0001] The present application relates to the tobacco processing equipment technical field, especially to a long cut tobacco screening and cutting system. BACKGROUND

[0002] In the cigarette production process, tobacco leaves need to be processed through a tobacco cutting process to produce cut tobacco that meets standards, and then the qualified cut tobacco is transported for use in subsequent processes. However, due to the structure of the tobacco pieces, the existing tobacco cutter produces a large amount of long cut tobacco, and some of the long cut tobacco forms clumps. Fine cigarette production and processing require "long control and fragmentation control" to screen out long cut tobacco and medium and short cut tobacco from the cut tobacco to avoid fragmentation during reprocessing. Long cut tobacco is reprocessed into medium and short cut tobacco. SUMMARY

[0003] To solve the problem that the long cut tobacco produced by the traditional main line tobacco cutter cannot be solved subsequently, the present application provides a long cut tobacco screening and cutting system, which comprises: A main line conveying belt machine is provided with a first input end, a first output end, a second input end, and a second output end in sequence along the conveying direction. The second output end of the main line conveying belt machine is suitable for connecting a cigarette process to convey medium and short cut tobacco that meets standards. A main line tobacco cutter is arranged at the first input end of the main line conveying belt machine. A loosening device is connected to the first output end of the main line conveying belt machine and is suitable for loosening long cut tobacco and medium and short cut tobacco. A screening device is arranged at the output end of the loosening device and is suitable for screening long cut tobacco and medium and short cut tobacco. A cut tobacco rotating and cutting device is arranged at the output end of the screening device and is suitable for rotating and cutting long cut tobacco into medium and short cut tobacco. The output end of the cut tobacco rotating and cutting device is connected to the second input end of the main line conveying belt machine.

[0004] In one possible implementation, the first output end of the main line conveying belt machine is provided with a rotatable flap. The rotation angle of the flap is 90 degrees, and the tobacco conveying direction of the main line conveying belt machine is controlled.

[0005] In one possible implementation, the loosening device comprises a loosening support and a star roller. The loosening support is a guide rail structure and is arranged horizontally. The star roller is a plurality of star rollers that are rotatably arranged on the loosening support. The star roller comprises a first cylinder, a star disc, and a star piece. The first cylinder is a cylindrical structure, the star disc is an annular structure, a plurality of star discs are threadedly connected outside the first cylinder, and a plurality of star pieces are arranged at a predetermined distance along the circumferential direction of the star disc.

[0006] In a possible implementation, the star discs of any two adjacent star rollers are staggered.

[0007] In a possible implementation, the screening device is arranged directly below the loosening device. The screening device comprises a screening box, a first screen, a second screen, a high-frequency elastic sheet vibrating screen and a PLC control. The screening box is a box structure with an open top and a preset length. The first screen and the second screen are both horizontally embedded in the interior of the screening box and arranged along the length direction of the screening box. The length direction end of the first screen is connected with the material inlet end of the cut tobacco rotating and beating device, and the length direction end of the second screen is connected with the second input end of the main line conveying belt machine. The first screen is located above the second screen. The board surface of the first screen is provided with first screen holes, and the board surface of the second screen is provided with second screen holes. The first screen holes are suitable for the length greater than that of the medium and short cut tobacco and the length less than that of the long cut tobacco, and the second screen holes are suitable for the length less than that of the medium and short cut tobacco. The high-frequency elastic sheet vibrating screen is arranged at the bottom of the screening box, and a plurality of high-frequency elastic sheet vibrating screens are arranged along the length direction of the screening box. The PLC control is connected with the plurality of high-frequency elastic sheet vibrating screens and controls the vibration frequency of the screening box.

[0008] In a possible implementation, the first screen and the second screen are spaced apart by a preset distance, and the second screen and the bottom wall of the screening box are spaced apart by a preset distance.

[0009] In a possible implementation, the screening device further comprises a medium and short cut tobacco discharge pipe and a tobacco foam discharge pipe. The medium and short cut tobacco discharge pipe is a tubular structure with two open ends, and the medium and short cut tobacco discharge pipe is vertically arranged, the top end of which is connected with and communicates with the length direction end of the second screen, and is suitable for discharging medium and short cut tobacco. The tobacco foam discharge pipe is a tubular structure with two open ends, and the tobacco foam discharge pipe is vertically arranged, the top end of which is connected with and communicates with the bottom wall end of the screening box, and is suitable for discharging tobacco foam.

[0010] In a possible implementation, the cut tobacco rotating and beating device comprises a rotating and beating shell, a vertical rotating shaft, a beating knife and a driving motor. The rotating and beating shell is a hollow structure, and the top end of the rotating and beating shell is provided with a cut tobacco material inlet hole, and the bottom end of the rotating and beating shell is provided with a cut tobacco material outlet hole. The cut tobacco material outlet hole is connected with the second input end of the main line conveying belt machine. The vertical rotating shaft has a columnar structure and is rotatably disposed inside the rotary housing; The cutting blade has a sheet-like structure, with its edge connected to the side wall of the vertical rotating shaft. There are multiple cutting blades, which are spaced apart along the circumferential and axial directions of the vertical rotating shaft. The output end of the drive motor is connected to the vertical rotating shaft, which drives the vertical rotating shaft to rotate around the axial direction.

[0011] In one possible implementation, the tobacco swirl device further includes: a distributor; The distributor is located at the top of the vertical rotating shaft; The dispenser includes multiple dispensing plates, each of which is a plate-shaped structure with a preset length. One side of the plate in the width direction is fixedly connected to the top position of the vertical rotating shaft. One end of the plate in the length direction faces the top edge of the vertical rotating shaft, and the other end faces the top center of the vertical rotating shaft. The surface of the plate has a preset curvature. The plurality of the distribution plates are spaced apart along the circumferential direction of the vertical rotation axis.

[0012] In one possible implementation, the cutting tool includes: a tool holder and a blade; The tool holder is a plate-shaped structure with a preset thickness, which is embedded in the side wall groove of the vertical rotating shaft. The blade is a sheet-shaped structure with a preset length, and its end is fixedly connected to the plate surface of the tool holder. The plate surface of the blade is perpendicular to the side wall of the vertical rotating shaft. The blade plate is circumferentially twisted around its length, and the twisting direction of the blade is the same as the rotation direction of the vertical rotating housing.

[0013] The beneficial effects of the long tobacco shred screening and cutting system of this application embodiment are as follows: This application can be a secondary conveyor consisting of a loosening device, a screening device and a tobacco shred rotary cutting device. The tobacco shred cutting device loosens, screens and rotary cuts a large number of non-standard long tobacco shreds produced by cutting tobacco shreds, and then conveys the cut medium and short tobacco shreds that meet the standards to the main conveyor belt for the next process. The main line shredder produces long tobacco shreds, medium and short tobacco shreds, and tobacco dust after cutting the tobacco shreds. The main line conveyor belt conveys the mixed tobacco shreds to the loosening device, where the long tobacco shreds, medium and short tobacco shreds, and tobacco dust are loosened and fall into the screening device, completing the screening of the long tobacco shreds, medium and short tobacco shreds, and tobacco dust. The tobacco dust is recycled. The medium and short tobacco shreds are conveyed to the main line conveyor belt, while the long tobacco shreds are conveyed to the tobacco shredding device for rotary cutting, which cuts the long tobacco shreds and tobacco shreds into medium and short tobacco shreds, which are then conveyed to the main line conveyor belt. This ensures that the tobacco shreds finally conveyed by the main line conveyor belt are all medium and short tobacco shreds, so there is no need to worry about the length of the tobacco shreds affecting the subsequent processes.

[0014] Other features and aspects of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0015] The accompanying drawings, which are included in and form part of this specification, illustrate exemplary embodiments, features, and aspects of this application together with the specification and serve to explain the principles of this application.

[0016] Figure 1 This diagram shows the main structure of the long tobacco shredding and cutting system according to an embodiment of this application. Figure 2 Schematic diagrams of the loosening device, screening device, and tobacco shredding device according to embodiments of this application are shown; Figure 3 This is a cross-sectional schematic diagram of a tobacco swirl device according to an embodiment of this application; Figure 4 A schematic diagram of the main structure of the cleaver according to an embodiment of this application is shown; Figure 5 A schematic diagram of the main structure of the star roller according to an embodiment of this application is shown; Figure 6 A schematic diagram of the main structure of the partition according to an embodiment of this application is shown; Figure 7 A schematic diagram of the main structure of the star disk according to an embodiment of this application is shown. Detailed Implementation

[0017] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0018] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention or simplifying the description, 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.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0021] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, components, and circuits well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0022] like Figure 1 As shown, the long tobacco shredding and cutting system of this application embodiment includes: a main conveyor belt 2, a main shredder 1, a loosening device 3, a screening device 4, and a tobacco shredding and shaving device 5. The main conveyor belt 2 is provided with a first input end, a first output end, a second input end, and a second output end in sequence along the conveying direction. The second output end of the main conveyor belt 2 is suitable for connecting to the cigarette making process and conveying medium and short tobacco shredding that meets the standards. The main shredder 1 is set at the first input end of the main conveyor belt 2. The loosening device 3 is connected to the first output end of the main conveyor belt 2 and is suitable for loosening long and medium and short tobacco shredding. The screening device 4 is set at the output end of the loosening device 3 and is suitable for screening long and medium and short tobacco shredding. The tobacco shredding and shaving device 5 is set at the output end of the screening device 4 and is suitable for shaving and cutting long tobacco shredding into medium and short tobacco shredding. The output end of the tobacco shredding and shaving device 5 is connected to the second input end of the main conveyor belt 2.

[0023] In this specific embodiment, the present application can use a secondary conveyor consisting of a loosening device 3, a screening device 4, and a tobacco shredding device 5 to complete the loosening, screening, and shredding of a large number of non-standard long tobacco shreds produced by the tobacco cutting device, and then convey the cut medium and short tobacco shreds that meet the standards to the main conveyor belt 2 for the next cigarette making process. The main line shredder 1 produces long tobacco shreds, medium and short tobacco shreds, and tobacco dust after cutting the tobacco shreds. The main line conveyor belt 2 transports the mixed tobacco shreds to the loosening device 3, where the long tobacco shreds, medium and short tobacco shreds, and tobacco dust are loosened and fall onto the screening device 4, completing the screening of the long tobacco shreds, medium and short tobacco shreds, and tobacco dust. The tobacco dust is recycled. The medium and short tobacco shreds are transported to the main line conveyor belt 2, while the long tobacco shreds are transported to the tobacco shredding device 5 for rotary cutting, which cuts the long tobacco shreds and tobacco shreds into medium and short tobacco shreds, which are then transported to the main line conveyor belt 2. This ensures that the tobacco shreds finally transported by the main line conveyor belt 2 are all medium and short tobacco shreds, so there is no need to worry about the length of the tobacco shreds affecting the subsequent processes.

[0024] In one specific embodiment, such as Figure 1 As shown, the first output end of the main conveyor belt 2 is equipped with a rotatable flap 21. The flap 21 rotates at an angle of 90 degrees, controlling the direction of tobacco conveying on the main conveyor belt 2. The rotation of the flap 21 is automatically triggered by the PLC system according to production instructions, or it can be manually controlled through a human-machine interface. When the flap 21 is initially at 0 degrees, the tobacco is always on the main conveyor belt 2. When the flap 21 rotates 90 degrees, the tobacco is guided to the loosening device 3, which loosens the tobacco containing long tobacco, tobacco clumps, medium and short tobacco, and tobacco dust, and then performs subsequent screening and rotary cutting.

[0025] In one specific embodiment, such as Figure 2 As shown, the loosening device 3 includes a loosening support and star rollers 31. The loosening support is a guide rail structure and is horizontally arranged. There are multiple star rollers 31, which are rotatably arranged on the loosening support. Each star roller 31 includes a first cylinder, a star disk, and star plates. The first cylinder is a cylindrical structure, the star disk is an annular structure, and multiple star disks are threadedly connected to the outside of the first cylinder. Multiple star plates are spaced at a preset distance along the circumferential direction of the star disk.

[0026] In this specific embodiment, multiple star rollers 31 are rotatably mounted on a loosening support, rotating in the same direction. The star plates on any two adjacent star rollers 31 are staggered. The staggered arrangement of the star plates on the two star rollers 31 loosens the tobacco shreds, allowing them to fall between the two rollers 31 onto the screening device 4 below for sieving. The loosening device 3 uses adjacent staggered star plates to loosen clumps of tobacco shreds into long tobacco shreds, medium-short tobacco shreds, and tobacco dust, facilitating sieving by the screening device 4.

[0027] The loose support includes two loose guide rails arranged side by side, with a preset distance between the two star rollers 31, and multiple rotating grooves spaced along the length of the loose guide rails to facilitate the placement of the star rollers 31. like Figure 2 As shown, the star roller 31 includes a first cylinder, a star disk, star plates, and partitions. The first cylinder is a cylindrical structure with a preset length, smooth at both ends, and an external thread in the middle. The cross-sectional diameter at both ends of the first cylinder is smaller than that at the middle, facilitating the installation of the two ends of the first cylinder into the rotating grooves on the loose guide rail. The star disk is an annular structure with an internal thread on the inner ring that matches the external thread on the first cylinder, and a star plate mounting groove on the outer ring for mounting the star plates. Multiple star plates and star disks are spaced apart circumferentially. The star plates are plate-shaped structures with an isosceles triangular cross-section and a preset thickness. The star plates are bolted into the star plate mounting grooves, with their tips facing outwards. The partitions are annular structures with a preset thickness, and the partitions and star disks are alternately installed on the first cylinder.

[0028] The first cylinder has keyways at both ends to facilitate connection to the motor output and drive the first cylinder to rotate around the axial direction.

[0029] In one specific embodiment, such as Figure 2 and Figure 5 As shown, the star plates of any two adjacent star rollers 31 are spaced by a preset distance to ensure that the tobacco clumps are loosened into long tobacco shreds, medium and short tobacco shreds or tobacco dust and then conveyed to the screening device 4.

[0030] In one specific embodiment, there are multiple star rollers 31. The first star roller 31 is adjacent to the first output end of the main conveyor belt 2. Under the action of the speed difference between the first star roller 31 and the intermediate star rollers 31, the incoming tobacco shreds are thrown forward. At the same time, under the forward throwing action formed during the movement of each loosening star roller 31, tobacco shreds of different specifications and sizes mixed together are loosened and separated. Under the continuous rotation of the loosening star rollers 31, the long filaments and clumps between the star plates on adjacent loosening star rollers 31 float above the star plates and move forward into the processing area of ​​the vibrating screen 44. Other specifications of tobacco shreds will gradually fall along the gaps between the loosening star rollers as they move forward, which can achieve the effect of spreading the tobacco shreds thinly and evenly. This achieves effective and accurate screening in the next process.

[0031] In one specific embodiment, such as Figure 2 As shown, the screening device 4 is located directly below the loosening device 3, and is used to receive the loosened long tobacco shreds, medium and short tobacco shreds and tobacco dust, and to screen them.

[0032] In this specific embodiment, the screening device 4 includes: a screening box 43, a first screen 41, a second screen 42, a high-frequency spring sheet vibrating screen 44, and a PLC control 45, which is used to screen long tobacco shreds, medium and short tobacco shreds, and tobacco dust, recover tobacco dust, and transport medium and short tobacco shreds to the second input end of the main conveyor belt 2, while long tobacco shreds are transported to the tobacco shredding device 5 for rotary cutting into conforming medium and short tobacco shreds.

[0033] The screening box 43 is a box structure with an open top and a preset length, used to install the first screen 41 and the second screen 42, and can prevent tobacco from splashing during vibration, reduce dust pollution, and protect internal components from external impurities.

[0034] The first screen 41 and the second screen 42 are both horizontally embedded inside the screening box 43 and are arranged along the length of the screening box 43. The end of the first screen 41 is connected to the feed end of the tobacco shredding device 5, and the end of the second screen 42 is connected to the second input end of the main conveyor belt 2. The first screen 41 is located above the second screen 42. The first screen 41 has a first screen hole on its surface, and the second screen 42 has a second screen hole on its surface. The opening diameter of the first screen hole is suitable for a length greater than that of medium and short tobacco shreds and less than that of long tobacco shreds. The opening diameter of the second screen hole is suitable for a length less than that of medium and short tobacco shreds.

[0035] In this specific embodiment, both the first screen 41 and the second screen 42 are plate-shaped structures with screens on their surfaces. The first screen opening of the first screen 41 is used to screen out long tobacco shreds, and the second screen opening of the second screen 42 is used to screen out medium and short tobacco shreds. The width of both the first screen 41 and the second screen 42 is equal to the internal width of the screening box 43. The design of equal width and flush edges prevents the material from scattering outside the screen during the falling process, reducing material loss. The first screen 41 and the second screen 42 are installed by setting abutment members on the inner side wall of the box, and the first screen 41 extends along the length direction to the outside of the screening box 43. The part extending outside the screening box 43 is located directly above the feed inlet of the tobacco shredding device 5.

[0036] Among them, the high-frequency spring sheet vibrating screen 44 is set at the bottom of the screening box 43. Multiple high-frequency spring sheet vibrating screens 44 are spaced apart along the length of the screening box 43. The PLC control 45 is connected to multiple high-frequency spring sheet vibrating screens 44 to adjust the vibration frequency of the screening box 43. In this way, the PLC control 45 system can be electrically connected to all high-frequency spring sheet vibrating screens 44, and the vibration frequency and movement trajectory of each screen and collecting plate can be adjusted in real time to ensure stable material conveying and efficient screening.

[0037] In one specific embodiment, such as Figure 2As shown, the first screen 41 and the second screen 42 are spaced apart by a preset distance, and the second screen 42 is spaced apart by a preset distance from the bottom wall of the screening box 43. The preset distance between the first screen 41 and the second screen 42 is used for temporarily placing the screened short and medium tobacco shreds, and the preset distance between the second screen 42 and the bottom wall of the screening box 43 is used for temporarily placing the tobacco dust falling on the second screen 42.

[0038] In one specific embodiment, such as Figure 2 As shown, the screening device 4 also includes: a medium-short tobacco shred discharge pipe and a tobacco dust discharge pipe. The bottom plate of the screening box 43 is provided with a tobacco dust discharge hole. The medium-short tobacco shred discharge pipe is a tubular structure with open ends, and the medium-short tobacco shred discharge pipe is vertically arranged. The top of the pipe passes through the bottom wall of the screening box 43 and is connected to the end of the second screen 42 in the longitudinal direction, and is suitable for discharging medium-short tobacco shreds. The tobacco dust discharge pipe is a tubular structure with open ends, and the tobacco dust discharge pipe is vertically arranged. The top of the pipe is connected to the end of the bottom wall of the screening box 43, and is suitable for discharging tobacco dust.

[0039] In this specific embodiment, one end of the medium-short tobacco shred discharge pipe is connected and communicates with the second screen 42, and the other end is connected to the second input end of the main conveyor belt 2, conveying the standard-compliant medium-short tobacco shreds to the main conveyor belt 2. One end of the tobacco dust discharge pipe is connected and communicates with the bottom wall of the screening box 43, and the other end is connected to the recycling device, discharging the tobacco dust to ensure that the tobacco shreds conveyed by the main conveyor belt 2 to the next process are all medium-short tobacco shreds without tobacco dust.

[0040] In one specific embodiment, the device further includes: a mounting bracket 7, with the loosening device 3 and the screening device 4 mounted vertically on the mounting bracket 7. The mounting bracket has a hollow structure with multiple symmetrically arranged support legs 72 at the bottom. The support legs 72 are horizontally spaced on opposite sides of the mounting bracket 7. An elastic element 71 is provided between the support legs 72 and the mounting bracket 7. The elastic element 71 is elastic and is located on the top of the support legs 72, connected to both the support legs 72 and the mounting bracket 7. The elastic element 71 can absorb the vibration energy generated by the high-frequency spring sheet vibrating screen 44, reduce the transmission of vibration to the ground and surrounding equipment, reduce operating noise, and prevent ground vibration from reacting on the first screen 41 and the second screen 42.

[0041] In one specific embodiment, such as Figure 2 and Figure 3As shown, the tobacco shredding device 5 includes: a shredding housing 54, a vertical rotating shaft 53, a shredding blade 55, and a drive motor. The shredding housing 54 is a hollow structure with a tobacco inlet hole at the top and a tobacco outlet hole at the bottom. The tobacco outlet hole is connected to the second input end of the main conveyor belt 2. The vertical rotating shaft 53 is a columnar structure and is rotatably disposed inside the shredding housing 54. The shredding blade 55 is a sheet-like structure with its edge connected to the side wall of the vertical rotating shaft 53. There are multiple shredding blades 55, which are spaced apart along the circumferential and axial directions of the vertical rotating shaft 53. The output end of the drive motor is connected to the vertical rotating shaft 53, driving the vertical rotating shaft 53 to rotate around the axial direction.

[0042] In this specific embodiment, the vertical rotating shaft 53 drives the multi-dimensionally distributed cutting blades 55 to rotate, forming a three-dimensional cutting and swirling structure in both the circumferential and axial directions. This allows for all-around cutting of the tobacco, avoiding the unevenness caused by cutting in one direction. The annular structure with an inclined surface of the guide plate 52 guides the tobacco along a preset path to the bottom, preventing the tobacco from accumulating in the swirling housing 54. Each layer functions to guide the tobacco towards the central axis in a graded manner, avoiding uneven cutting caused by dispersion. The tobacco falls into the layer above. The cutting blade 55 working area is equipped with multiple layers of cutting blades 55. During the operation of the previous layer of cutting blades 55, the tobacco shreds are propelled onto the cylinder wall of the rotating shell 54 by the centrifugal force of the rotating rotor. The cutting blades 55 cannot reciprocate due to the gap between themselves and the wall of the rotating shell 54. A guide plate 52, located between the upper and lower layers of cutting blades 55, is arranged sequentially to allow the long tobacco shreds or clumps to return to the cutting blades 55 for further cutting, thus improving the efficiency of cutting long tobacco shreds or clumps. Furthermore, the vertical layout compresses the processing space along the height, suitable for the compact layout requirements of cigarette factory workshops.

[0043] Specifically, the rotary housing 54 is a closed cavity with openings at the top and bottom, and is a hollow structure. The interior forms a space for rotating tobacco leaves. The top has a first inlet hole for long tobacco leaves entering the equipment, and the bottom has a first outlet hole for the tobacco leaves after rotary processing. The rotary housing 54 acts as the outer frame of the equipment, constraining the movement of the tobacco leaves within the internal space and preventing leaf splashing. The vertical rotating shaft 53 is located at the center of the rotary housing 54. It is a hollow columnar structure, similar to a vertically placed hollow cylinder. An opening at the bottom is provided for mounting the rotary rotating shaft 56. The vertical rotating shaft 53 serves as a motion carrier, used to mount the cutting blade 55 and the discharge component 57. Its own rotation drives the cutting blade 55 to rotate synchronously. The striking blade 55 is a sheet-like metal structure, with its edge bolted to the outer wall of the vertical rotating shaft 53. There are multiple striking blades 55, which are spaced apart in the direction of circumference and vertical height around the vertical rotating shaft 53. The striking blades 55 directly contact the long tobacco shreds and strike the long tobacco shreds and tobacco clumps through the impact force generated by high-speed rotation, breaking up and loosening the clumps of tobacco leaves. The circumferential and axial spacing can cover the entire space around the vertical rotating shaft 53, avoiding missing any tobacco leaves.

[0044] Among them, such as Figure 2 and Figure 3 As shown, the discharge component 57 is a horizontally extending rod-shaped structure. One end is connected to the outer wall of the vertical rotating shaft 53 and can rotate synchronously with the vertical rotating shaft 53. The other end is suspended. The discharge component 57 has a second inlet hole in the horizontal direction. The second inlet is the entrance for tobacco shreds to enter the discharge component 57. The bottom has a second outlet hole. The second outlet hole is the outlet for tobacco shreds to be discharged from the discharge component 57. In this way, the second outlet hole is connected to the first inlet hole of the rotary housing 54, and the second outlet hole corresponds to the first outlet hole vertically. The broken tobacco shreds conveyed from the outside are first introduced into itself through the second inlet hole, and then accurately discharged from the outside of the rotary housing 54 through the second outlet hole.

[0045] Furthermore, it also includes: a reducer 510 and a rotary shaft 56. One end of the rotary shaft 56 is connected to the inner top flange of the vertical rotary housing 54. The reducer 510 is connected to the other end of the rotary shaft 56 via a coupling. The drive motor is connected to the other end of the rotary shaft 56 via a drive belt.

[0046] Furthermore, the reducer 510 works in conjunction with the drive motor to drive the cutting blade 55 on the vertical rotating shaft 53 to rotate around the axis of the rotating shaft 56, thereby completing the rotary cutting of long tobacco shreds and tobacco shred patterns.

[0047] Furthermore, it also includes: a guide plate 52, which is a ring structure and is disposed inside the rotary housing 54. The outer ring of the guide plate 52 is fixedly connected to the side wall of the rotary housing 54. Multiple guide plates 52 are disposed at intervals on the inner side wall of the rotary housing 54 along the height direction of the rotary housing 54. The guide plate 52 is an inverted frustum structure with openings at both ends, and the plate surface of the guide plate 52 is inclined towards the bottom of the rotary housing 54.

[0048] Furthermore, the inclined surface of the inverted frustum-shaped guide plate 52 uses gravity to guide the tobacco filaments to gather towards the center of the shell before flowing downwards, preventing the tobacco filaments from adhering to the inner wall of the rotary shell 54 and ensuring that the tobacco filaments are in full contact with the cutting blade 55 for rotary cutting. The multi-layered guide plates 52 divide the interior of the rotary shell 54 into multiple independent processing zones. Long tobacco filaments and tobacco clumps enter the next stage of cutting blade 55 for processing after passing through each layer of guide plates 52.

[0049] Specifically, such as Figure 2 and Figure 3 As shown, the guide plate 52 is an annular plate structure. The outer ring edge is fixedly connected to the inner wall of the rotary housing 54, and they are spaced apart along the height direction of the rotary housing 54. The guide plate 52 has an inverted frustum structure, that is, the upper port diameter is small and the lower port diameter is large. Both ends are open for leaving a central hole for the vertical rotating shaft 53 to pass through. The plate surface is inclined towards the bottom of the rotary housing 54, that is, it is inclined downward from the outer ring to the inner ring. It guides the tobacco filaments to move downward. When the tobacco filaments are impacted by the striker 55, they will splash in all directions. After contacting the inclined guide plate 52, they will slide downward along the plate surface, preventing the tobacco filaments from accumulating at a certain height. At the same time, the annular structure can constrain the long tobacco filaments in the area between the guide plate 52 and the striker 55, increasing the number of strikes.

[0050] Furthermore, the cross-section of the guide plate 52 is circular, and the diameter of the cross-section gradually increases along the axial direction. This gradual increase in diameter also accommodates the expanded distribution range of the tobacco shreds due to diffusion during their descent, preventing the tobacco shreds from forming dead zones between the guide plate 52 and the sidewall of the rotating housing 54. The gradually changing flow channel slows down the falling speed of the tobacco shreds, prolonging the contact time between the tobacco shreds and the cutting blade 55, thus improving the cutting adequacy. In this way, the cross-section of the annular guide plate 52 is circular, gradually decreasing downwards, and the inner ring of the guide plate 52 is located above the cutting blade 55, allowing some of the rotated tobacco shreds to be fed back onto the cutting blade 55 for further rotation.

[0051] Furthermore, the cutting blade 55 and the guide plate 52 are staggered at intervals with a preset distance. The safe distance between the cutting blade 55 and the guide plate 52 prevents them from colliding during high-speed rotation. The reasonable preset distance provides sufficient cutting space for the tobacco, avoiding excessive compression that could cause the tobacco to break. This allows the tobacco to slide directly from the gap between the two blades after being spun and enter the cutting blade 55 below for further spun processing. The cutting blades 55 and guide plates 52 are arranged alternately along the axial direction, dividing the interior of the rotary casing 54 into multiple independent processing zones. This allows for multiple rotary cuts of long tobacco shreds and tobacco clumps, ensuring that the tobacco shreds are cut into suitable medium-short lengths. The staggered distribution of the cutting blades 55 and guide plates 52 causes the tobacco shreds to undergo a cycle of cutting, guiding, cutting, and re-guiding during their descent, achieving multiple cuts and improving the uniformity of tobacco particle size. Furthermore, the staggered structure breaks the disordered descent path of the tobacco shreds, preventing them from sliding rapidly along a single channel and ensuring that each segment of tobacco shreds contacts the cutting blades 55. The sidewalls of the rotary casing 54 are inclined from the bottom to the top of the rotary casing 54.

[0052] Furthermore, the end of the guide plate 52 furthest from the rotary housing 54 is located above the end of the cutting blade 55 furthest from the vertical rotating shaft 53. The inner ring end of the guide plate 52 is located above the outer end of the cutting blade 55, which can accurately guide the tobacco into the cutting area of ​​the cutting blade 55, preventing the tobacco from bypassing the cutting blade 55 and falling directly, thus improving the cutting coverage. The height difference setting can prevent the tobacco from accumulating between the guide plate 52 and the cutting blade 55, ensuring a continuous and stable cutting process.

[0053] Furthermore, between any two adjacent guide vanes 52, there are two or more blades 55.

[0054] Furthermore, such as Figure 2 As shown, it also includes: a tobacco shred collection hood 51, which has an internal hollow structure and openings at both ends. The cross-section of the tobacco shred collection hood 51 is circular, and the cross-sectional area of ​​the tobacco shred collection hood 51 gradually increases along the opening direction. The smaller end of the opening of the tobacco shred collection hood 51 is embedded in the first tobacco inlet hole. The flared structure of the tobacco shred collection hood 51 can expand the feeding range, adapt to the discharge end of the external feeding equipment, avoid tobacco shreds from scattering, and reduce material waste. The design of the first inlet hole embedded at the smaller end of the opening can ensure that all tobacco shreds enter the rotary shell 54, while preventing external impurities from entering and ensuring the purity of tobacco processing.

[0055] Furthermore, the first feed hole has a circular cross-section, and its diameter is smaller than the diameter of the larger end of the tobacco collection hood 51. The larger end of the tobacco collection hood 51 faces outward and is bent with an abutment portion. The smaller diameter of the first feed hole, combined with the abutment portion, allows the collection hood 51 to be stably fixed on the top of the rotary housing 54, preventing it from shifting or falling off during feeding. The abutment portion increases the contact area between the collection hood 51 and the rotary housing 54, reducing local pressure, minimizing component wear, and extending the equipment's service life. Simultaneously, the abutment portion can cover the connection gap between the collection hood 51 and the first feed hole, further preventing tobacco from scattering.

[0056] In one specific embodiment, such as Figure 2 and Figure 3 As shown, the tobacco swirl device 5 also includes a distributor, which is located at the top of the vertical rotating shaft 53. The distributor includes multiple distribution plates, each of which is a plate-shaped structure with a preset length. One side of the distribution plate in the width direction is fixedly connected to the top of the vertical rotating shaft 53. One end of the distribution plate in the length direction faces the top edge of the vertical rotating shaft 53, and the other end faces the top center of the vertical rotating shaft 53. The surface of the distribution plate has a preset curvature, and the multiple distribution plates are spaced apart along the circumferential direction of the vertical rotating shaft 53.

[0057] In this specific embodiment, the distributor can distribute and guide the tobacco when it enters the top of the cutter structure, so that the tobacco is more evenly distributed around the vertical rotating shaft 53, which facilitates the subsequent processing of the tobacco by the cutting blade 55 and avoids the tobacco from being concentrated in a certain area, thus affecting the processing effect.

[0058] Furthermore, there are multiple distribution plates, which are spaced apart along the circumferential direction of the vertical rotation axis 53. The multiple distribution plates spaced apart circumferentially allow for distribution of tobacco from multiple directions, further improving the uniformity of tobacco distribution and ensuring that the tobacco can more fully contact the cutting blade 55, thereby increasing overall processing efficiency.

[0059] Furthermore, the distribution plate has a preset curvature. This preset curvature guides the flow of tobacco better, making the distribution process smoother, reducing tobacco buildup on the plate, and improving the efficiency and effectiveness of tobacco distribution.

[0060] Furthermore, the bending direction of the distribution plate is the same as that of the cutting knife 55. This alignment of the distribution plate and the cutting knife 55 ensures that the tobacco, after being distributed by the distribution plate, can more smoothly enter the working area of ​​the cutting knife 55, matching the movement trajectory of the cutting knife 55 and improving the continuity and efficiency of tobacco processing.

[0061] Furthermore, the end of the distribution plate adjacent to the edge of the vertical rotating shaft 53 is a free end, and the ends of any two distribution plates furthest from the free end are spaced by a preset distance. This provides a channel for the tobacco to flow from the center to the edge, facilitating the smooth arrival of the tobacco within the effective range of the cutting knife 55 after distribution, while also preventing excessive crowding between the distribution plates, which would affect the flow of the tobacco.

[0062] Furthermore, the free end of the distribution plate is flush with the top edge of the vertical rotating shaft 53. This ensures that when the tobacco reaches the edge of the vertical rotating shaft 53, it can make more effective contact with the cutting blade 55, improving the processing effect of the cutting blade 55 on the tobacco and allowing the tobacco to be fully utilized by the cutting blade 55 at the edge.

[0063] In one specific embodiment, such as Figure 4 As shown, the cutting tool 55 includes a tool holder 552 and a blade 551. The tool holder 552 is a plate-shaped structure with a preset thickness, which is embedded in the side wall groove of the vertical rotating shaft 53. The blade 551 is a sheet-shaped structure with a preset length, and its end is fixedly connected to the plate surface of the tool holder 552. The plate surface of the blade 551 is perpendicular to the side wall of the vertical rotating shaft 53. The plate surface of the blade 551 is circumferentially twisted around its length, and the twisting direction of the blade 551 is the same as the rotation direction of the vertical rotating housing.

[0064] In this specific embodiment, the arrayed cutting blades 55 form a continuous cutting area. Combined with the circular motion of the vertical rotating shaft 53, this increases the cutting contact area per unit time. Specifically, the blade surface 551 rotates circumferentially along its length, and the rotation direction of the blade 551 is the same as the rotation direction of the vertical rotating shaft 53. This allows the tobacco shreds to naturally unfold during the rotating process, avoiding the agglomeration of tobacco shreds caused by the squeezing cutting of traditional straight blades 551. Long tobacco shreds or clumps are then thrown onto the sidewall of the long tobacco shredding and cutting system, separating the clumps and long tobacco shreds. Specifically, when the blade 551 cuts and rotates long tobacco shreds or clumps, the side of the blade 551 that is not rotated along its length is used to cut the long tobacco shreds or clumps, while the side that is rotated along its length is used to throw the long tobacco shreds or clumps onto the sidewall of the long tobacco shredding and cutting system, further improving the efficiency of cutting and rotating long tobacco shreds and clumps.

[0065] The blade holder 552 is a plate-shaped structure with a preset thickness, which fits into the groove on the outer wall of the vertical rotating shaft 53 and can be stably embedded therein, providing a mounting base for the blade 551. The blade 551 is a sheet-shaped structure with a preset length, and its end is fixedly connected to the plate surface of the blade holder 552. The plate surface of the blade 551 is perpendicular to the axial length direction of the vertical rotating shaft 53 to ensure effective transmission of cutting force. The plate surface of the blade 551 is circumferentially twisted along the length direction, and the twisting direction is the same as the rotation direction of the vertical rotating shaft 53. This allows for simultaneous twisting and turning of long tobacco shreds and tobacco clumps while cutting, improving the efficiency of cutting long tobacco shreds and tobacco clumps into medium and short tobacco shreds.

[0066] Furthermore, the blade 551 has a thick plate-like structure. Compared to the traditional thin blade 551, the thick plate-like blade 551 has improved bending strength and avoids deformation under the high-speed rotation of the vertical rotating shaft 53. Moreover, the thick structure disperses the force on the blade edge of the blade 551, reduces the pressure per unit area, ensures cutting force while reducing excessive breakage of tobacco.

[0067] Furthermore, the blade 551 has a fixed end at one end along its length and a cutting end at the other end. The fixed end of the blade 551 is fixedly connected to the blade holder 552. The cutting end of the blade 551 extends away from the fixed end, and the cutting end has an abutting end at one end along the width direction of the blade 551 and a turning end at the other end. The turning end of the blade 551 is bent at a preset angle toward the fixed end of the blade 551, and the preset angle is in the range of 30-60 degrees.

[0068] Furthermore, such as Figure 4 As shown, the 30-60 degree bend of the rotating end forms a progressive cutting angle. First, the tobacco is combed by the rotating end of the blade 551, and then the fixed-length cutting is completed by the contact end of the blade 551, which solves the problem of uneven length caused by the traditional blade 551's one-cut.

[0069] Furthermore, the bending structure causes the cut tobacco shreds to fall off along the bevel of the blade edge, and combined with the centrifugal force of rotation, the tobacco shred entanglement rate is reduced. In one specific embodiment, the turning end of the blade 551 is located above the abutting end of the blade 551.

[0070] Furthermore, the cross-section of the base is square, and the square-section cutter holder 552 forms a surface contact with the groove for positioning, reducing installation errors. Specifically, the outer wall of the vertical rotating shaft 53 has a recessed groove that matches the cutter holder 552, used to fix and install the cutter holder 552 of the cutter body 55. The groove has a square cross-section that matches the cross-section of the cutter holder 552, allowing the cutter holder 552 of the cutter body 55 to be embedded inside the groove.

[0071] Furthermore, the rotating end is located above the abutting end. When the striking knife 55 is mounted on the vertical rotating shaft 53, the rotating end of the blade 551 is located above the abutting end of the blade 551. This allows the surface of the blade 551 to have a concave structure, which can wrap a certain amount of long tobacco shreds and tobacco clumps and throw them onto the outer side wall for loosening.

[0072] Furthermore, the tool holder 552 has fixing holes on its plate surface. The cutting tool 55 is bolted to the vertical rotating shaft 53 through these fixing holes. There are two fixing holes, one on each side of the cutting tool 551. The symmetrical arrangement of the two fixing holes on both sides of the cutting tool 551 ensures that the bolts are evenly stressed, eliminating the risk of loosening under high-frequency vibration. In addition, the bolt connection method reduces the replacement time of the cutting tool 551.

[0073] Furthermore, the end of the blade 551 is located in the middle of the plate surface of the tool holder 552. The blade 551 is fixed in the center so that the torque difference between the two ends of the tool holder 552 is close to zero, avoiding deformation of the tool holder 552 caused by unilateral force, extending the service life of the tool holder 552. The central layout also ensures the concentricity of the rotation trajectory of the blade 551, and the overlapping area of ​​multiple blades 551 is controlled within a very small range.

[0074] Furthermore, the blade 551 has a recessed guide groove on its surface. By bending the rotating end of the blade 551 toward the fixed end of the blade 551, a guide groove with a recessed structure is formed, which can wrap a certain amount of long tobacco shreds or tobacco clumps and throw them onto the outer side wall, thereby loosening the long tobacco shreds and tobacco clumps.

[0075] Furthermore, both the blade 551 and the blade holder 552 are made of stainless steel, and the length direction of the blade 55 is suitable for being perpendicular to the outer wall of the vertical rotating shaft 53. The vertical rotation axis of the blade 55 increases the effective cutting radius of the blade 551 compared to the traditional inclined layout.

[0076] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A long tobacco shredding and cutting system, characterized in that, include: The main conveyor belt is provided with a first input end, a first output end, a second input end, and a second output end in sequence along the conveying direction. The second output end of the main conveyor belt is suitable for connecting to the cigarette making process and conveying medium and short tobacco shreds that meet the standards. The main line shredder is installed at the first input end of the main line conveyor belt and feeds the shredded tobacco after one cut to the main line conveyor belt. A loosening device is connected to the first output end of the main conveyor belt and receives tobacco shreds that need to be processed again after being screened by the main line. The loosening device is suitable for loosening long tobacco shreds and medium and short tobacco shreds. A screening device is installed at the output end of the loosening device and is suitable for screening long tobacco shreds and medium-short tobacco shreds. A tobacco shredding device is installed at the output end of the screening device. It is suitable for shredding long tobacco shreds into medium and short tobacco shreds. The output end of the tobacco shredding device is connected to the second input end of the main conveyor belt.

2. The long tobacco shredding and cutting system according to claim 1, characterized in that, The first output end of the main conveyor belt is equipped with a rotatable flap, the flap rotating at an angle of 90 degrees, which controls the direction of tobacco conveying of the main conveyor belt.

3. The long tobacco shredding and cutting system according to claim 2, characterized in that, The loosening device includes: a loosening support and a star roller; The loose support is a guide rail structure and is set horizontally; There are multiple star rollers, and these multiple star rollers are rotatably mounted on a loose support; and The star roller includes a first cylinder, a star disk, and star plates. The first cylinder is a cylindrical structure, the star disk is an annular structure, and a plurality of star disks are threadedly connected to the outside of the first cylinder. The plurality of star plates are spaced at a predetermined distance along the circumferential direction of the star disk.

4. The long tobacco shredding and cutting system according to claim 3, characterized in that, The star disks of any two adjacent star rollers are staggered.

5. The long tobacco shredding and cutting system according to claim 1, characterized in that, The screening device is located directly below the loosening device; The screening device includes: a screening box, a first screen, a second screen, a high-frequency spring sheet vibrating screen, and a PLC control system; The screening box is a box structure with an open top and a preset length; Both the first screen and the second screen are horizontally embedded inside the screening box and arranged along the length of the screening box. The end of the first screen along the length is connected to the feed end of the tobacco shredding device, and the end of the second screen along the length is connected to the second input end of the main conveyor belt. The first screen is located above the second screen. The first screen has a first screen hole on its surface, and the second screen has a second screen hole on its surface. The opening diameter of the first screen hole is suitable for a length greater than that of medium and short tobacco shreds and less than that of long tobacco shreds. The opening diameter of the second screen hole is suitable for a length less than that of medium and short tobacco shreds. The high-frequency spring sheet vibrating screen is located at the bottom of the screening box, and multiple high-frequency spring sheet vibrating screens are spaced apart along the length of the screening box; The PLC control is connected to multiple high-frequency spring sheet vibrating screens to regulate the vibration frequency of the screening box.

6. The long tobacco shredding and cutting system according to claim 5, characterized in that, The first screen and the second screen are spaced at a preset distance, and the second screen is spaced at a preset distance from the bottom wall of the screening box.

7. The long tobacco shredding and cutting system according to claim 6, characterized in that, The screening device further includes: a medium and short tobacco shred discharge pipe and a tobacco dust discharge pipe; The medium-short tobacco shred discharge pipe is a tubular structure with openings at both ends, and the medium-short tobacco shred discharge pipe is vertically arranged, with its top connected and communicating with the end of the second screen in the length direction, which is suitable for discharging medium-short tobacco shreds; The smoke discharge pipe is a tubular structure with openings at both ends, and the smoke discharge pipe is vertically arranged. Its top is connected and communicates with the bottom end of the screening box, and it is suitable for discharging smoke.

8. The long tobacco shredding and cutting system according to claim 1, characterized in that, The tobacco shredding device includes: a shredding housing, a vertical rotating shaft, a shredding blade, and a drive motor; The rotary housing has a hollow structure with a tobacco inlet at the top and a tobacco outlet at the bottom. The tobacco outlet is connected to the second input end of the main conveyor belt. The vertical rotating shaft has a columnar structure and is rotatably disposed inside the rotary housing; The cutting blade has a sheet-like structure, with its edge connected to the side wall of the vertical rotating shaft. There are multiple cutting blades, which are spaced apart along the circumferential and axial directions of the vertical rotating shaft. The output end of the drive motor is connected to the vertical rotating shaft, which drives the vertical rotating shaft to rotate around the axial direction.

9. The long tobacco shredding and cutting system according to claim 8, characterized in that, The tobacco shredding device also includes: a distributor; The distributor is located at the top of the vertical rotating shaft; The dispenser includes multiple dispensing plates, each of which is a plate-shaped structure with a preset length. One side of the plate in the width direction is fixedly connected to the top position of the vertical rotating shaft. One end of the plate in the length direction faces the top edge of the vertical rotating shaft, and the other end faces the top center of the vertical rotating shaft. The surface of the plate has a preset curvature. The plurality of the distribution plates are spaced apart along the circumferential direction of the vertical rotation axis.

10. The long tobacco shredding and cutting system according to claim 8, characterized in that, The cutting tool includes: a tool holder and a blade; The tool holder is a plate-shaped structure with a preset thickness, which is embedded in the side wall groove of the vertical rotating shaft. The blade is a sheet-shaped structure with a preset length, and its end is fixedly connected to the plate surface of the tool holder. The plate surface of the blade is perpendicular to the side wall of the vertical rotating shaft. The blade plate is circumferentially twisted around its length, and the twisting direction of the blade is the same as the rotation direction of the vertical rotating housing.

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