Multi-channel tobacco leaf layering and grading sorting equipment

Abstract

The invention discloses multi-way tobacco leaf layering and grading sorting equipment which comprises a feeding device, a grading device, a sorting device and a sorting device. The feeding device is used for conveying multi-way tobacco leaves; the layering device is matched with the feeding device and is used for layering and conveying the received multiple paths of tobacco leaves; the grading device is matched with the layering device and used for receiving the multiple layers of tobacco leaves conveyed by the layering device and conducting tobacco leaf grading on each tobacco leaf of each layer; and the sorting device is in communication connection with the grading device and is used for sorting the tobacco leaves according to the received tobacco leaf grading of the grading device. According to the tobacco leaf grading and sorting device, multiple paths of tobacco leaves are separated into multiple layers to be conveyed, then each tobacco leaf on each layer is graded, the tobacco leaves can be conveniently and rapidly read and graded, the accuracy of tobacco leaf grading and identifying can be improved, the sorting device correspondingly sorts the tobacco leaves according to each received tobacco leaf and grading information, the grading and sorting efficiency is improved, and the sorting efficiency is improved. The conveying efficiency of the tobacco leaves can be improved, tobacco leaf accumulation is avoided, the automation degree is high, and the production efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the field of tobacco equipment, and in particular relates to multi-channel tobacco layering, grading and sorting equipment. Background Art

[0002] Currently, the leaf threshing, re-drying, and leaf selection processes are plagued by widespread issues such as a low level of industrialization, high labor demand, and low efficiency. Leaf selection and grading rely on manual judgment, resulting in varying levels of skill among operators. Long hours of work can also lead to visual fatigue, which can affect accuracy. Furthermore, the leaf selection process involves overlapping logistics operations, creating dust pollution and a poor working environment. Therefore, promoting industrialized leaf selection production, shifting from labor-intensive operations to industrialized ones, is in line with the industry's development trajectory.

[0003] In existing technology, tobacco leaves conveyed during the threshing, re-drying, and leaf sorting process are graded using automatic sorting equipment, and then sorted according to the determined grade, achieving industrialized tobacco sorting. However, this prior art directly grades and sorts the conveyed tobacco leaves, leading to accumulation of tobacco leaves, low grading recognition rates, low leaf grading efficiency, and prolonged grading and sorting time.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology. The purpose is to provide a multi-channel tobacco layered grading and sorting equipment. By separating the multi-channel tobacco leaves into multiple layers for transportation and then grading the tobacco leaves in each layer, the accuracy of tobacco leaf identification can be improved, and then the corresponding sorting can be carried out to avoid tobacco leaf accumulation, thereby improving the efficiency of grading and sorting, having a high degree of automation, reducing labor and improving production efficiency.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is to provide a multi-channel tobacco layering, grading and sorting equipment, including:

[0007] A feeding device for conveying multiple streams of tobacco leaves;

[0008] A layering device, cooperating with the feeding device, is used to layer and convey the received tobacco leaves from multiple paths;

[0009] a grading device, cooperating with the layering device, for receiving multiple layers of tobacco leaves conveyed by the layering device and grading each tobacco leaf in each layer;

[0010] The sorting device is in communication with the grading device and is used to sort the tobacco leaves by grade according to the tobacco leaf grades received from the grading device.

[0011] Furthermore, the stratification device is located below the dropping area of ​​the feeding device, and the stratification device has multiple layers of first conveying mechanisms in the upper and lower directions, which are used to respectively receive the tobacco leaves dropped from the feeding device for stratification.

[0012] Furthermore, the blanking area is extended along the conveying direction and arranged on the feeding conveying mechanism of the feeding device, and the multiple layers of first conveying mechanisms are arranged at intervals above and below and extended below the blanking area; each layer of the first conveying mechanism has multiple first conveyor belts arranged at intervals, and the first conveyor belts of adjacent layers are staggered in sequence in the vertical direction.

[0013] Furthermore, the tobacco leaf conveying speed of the grading device is greater than the tobacco leaf conveying speed of the stratification device, which is greater than the tobacco leaf conveying speed of the feeding device.

[0014] Furthermore, the feeding device is a feeding shaping device, which is used to comb the tobacco leaves into length directions and place them along the conveying direction and divide them into multiple conveying paths;

[0015] The feeding shape-adjusting device comprises multiple shape-adjusting conveyor belts which are arranged at different speeds and arranged at different transverse intervals. The first conveying mechanism of each layer is arranged vertically opposite to the gap between two adjacent shape-adjusting conveyor belts.

[0016] Furthermore, the stratification device further comprises a stratification rack, the top of which is provided with a concave cavity, extending along the tobacco leaf conveying direction; the multi-layer first conveying mechanism is arranged in the concave cavity, and is spaced closely together at upper and lower intervals;

[0017] The feeding device is arranged on a layered rack above the multi-layer first conveying mechanism.

[0018] Furthermore, the multi-channel shape-adjustable conveyor belt is extended in the same direction as the first conveyor belt and is arranged at the opening of the cavity, located above the first conveyor belt; the multi-channel shape-adjustable conveyor belt has a certain material leakage distance in the horizontal direction between the inner side walls of the cavity on both sides of the extension direction.

[0019] Furthermore, the total number of the shape-adjusting conveyor belts is less than the total number of the first conveyor belts of the layering device;

[0020] Preferably, the feed shape adjustment device includes 14 shape adjustment conveyor belts, the layering device includes 3 layers of first conveying mechanisms, and each layer of the first conveying mechanism includes 5 first conveyor belts.

[0021] Furthermore, the layering device further comprises a multi-layer second conveying mechanism and a support frame, and the multi-layer second conveying mechanism is arranged on the support frame at intervals up and down;

[0022] The feed ends of the multi-layer second conveying mechanisms are connected to the discharge ends of the multi-layer first conveying mechanisms in a one-to-one correspondence, and the upper and lower spacing between the multi-layer second conveying mechanisms gradually increases from the feed end to the discharge end.

[0023] Furthermore, the grading device includes:

[0024] Multi-layer grading conveying mechanism, each layer of grading conveying mechanism is extended horizontally, and the multi-layer grading conveying mechanism is arranged at intervals along the vertical direction, and the feeding end is connected with the discharging end of the multi-layer second conveying mechanism in a one-to-one correspondence;

[0025] The scanning and grading system is located above each level of the grading and conveying mechanism, and is used to obtain the image of each tobacco leaf on each level of the grading and conveying mechanism, compare it with the preset data, and then grade it and generate ID information;

[0026] Each layer of the grading conveying mechanism is provided with a plurality of sorting devices, which are in communication with the scanning and grading system and are used to sort the tobacco leaves on each layer of the grading conveying mechanism according to the obtained ID information and grading information;

[0027] Preferably, the spacing between the multiple layers of graded conveying mechanisms is greater than the spacing between the multiple layers of first conveying mechanisms;

[0028] Preferably, each layer of the grading and conveying mechanism includes a multi-way grading conveyor belt arranged at intervals along the lateral direction, and the sorting device includes a nozzle and an electromagnetic valve for controlling the opening and closing of the nozzle. The nozzle is located on one side of the conveying direction of the multi-way grading conveyor belt of each layer and is used to blow the tobacco leaves to move.

[0029] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0030] (1) The multi-channel tobacco leaf layering and grading and sorting equipment of the present invention separates the multi-channel tobacco leaves into multiple layers for transportation, and then grades each tobacco leaf in each layer, so as to facilitate quick reading and grading of the tobacco leaves, thereby improving the accuracy of tobacco leaf identification. The sorting device sorts the tobacco leaves according to the determined tobacco leaf grade based on each tobacco leaf and grading information received from the grading device, thereby improving the efficiency of grading and sorting, and also increasing the transportation efficiency of the tobacco leaves, avoiding tobacco leaf accumulation, having a high degree of automation, reducing labor and improving production efficiency.

[0031] (2) The feeding conveying mechanism of the feeding device extends along the conveying direction, which can increase the area of ​​the falling material and improve the efficiency of the falling material stratification. By staggering the first conveyor belts of multiple layers in the vertical direction, each first conveyor belt of each layer can receive the tobacco leaves falling from the feeding device, quickly stratify them, and further improve the stratification efficiency.

[0032] (3) After the tobacco leaves are fed into the present invention, they are accelerated by the stratification device to complete the first-level increase in the distance between the tobacco leaves; then they enter the sorting device for secondary acceleration to complete the second-level increase in the distance between the tobacco leaves; by leaving a sufficiently large distance, the grading device has enough time to complete the grading and identification of each tobacco leaf, thereby improving the identification accuracy of the grading device.

[0033] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive effort. In the accompanying drawings:

[0035] Figure 1 This is a schematic diagram of a multi-channel tobacco layering, grading and sorting device according to the present invention;

[0036] Figure 2 It is a partial schematic diagram of a feeding device and a layering device of the present invention;

[0037] Figure 3 This invention Figure 2 A cross-sectional schematic diagram of

[0038] Figure 4 It is a schematic diagram of a grading device and a sorting device of the present invention;

[0039] Figure 5 This invention Figure 4 Schematic diagram from another angle.

[0040] In the figure: 1. Feeding device; 11. Shape-adjusting conveyor belt; 12. Material-dividing mechanism; 2. Layering device; 21. First conveying mechanism; 211. First conveyor belt; 22. Layering rack; 221. Concave cavity; 23. Second conveying mechanism; 231. Second conveyor belt; 24. Support rack; 3. Grading device; 31. Grading conveyor mechanism; 311. Grading conveyor belt; 32. Grading conveyor rack; 33. Scanning camera; 4. Sorting device; 41. Nozzle; 5. Collecting device.

[0041] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0043] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0044] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0045] like Figures 1 to 5 As shown, the present invention provides a multi-channel tobacco leaf layering, grading and sorting equipment, which can be used in the leaf beating, redrying and leaf selection process to grade and sort tobacco leaves of different sizes and qualities, thereby realizing automated leaf selection processing.

[0046] The layered, graded and sorting equipment includes a feeding device 1, a layering device 2, a grading device 3 and a sorting device 4.

[0047] The feeding device 1 can be used to feed multiple streams of tobacco leaves into the equipment. The layering device 2 cooperates with the feeding device 1 and is used to layer and feed the multiple streams of tobacco leaves received from the feeding device 1. The grading device 3 cooperates with the layering device 2 and is used to receive multiple layers of tobacco leaves delivered by the layering device 2 and grade each leaf in each layer to determine the grade of each leaf. The sorting device 4 is communicatively connected to the grading device 3 and is used to receive the position and corresponding grade of each leaf from the grading device 3 and sort the leaves by grade based on the received leaf grade.

[0048] The multi-channel tobacco layered grading and sorting equipment of the present invention separates multiple channels of tobacco leaves into multiple layers for transportation, and then grades each tobacco leaf in each layer, which facilitates quick reading and grading of tobacco leaves, and can improve the accuracy of tobacco leaf identification. The sorting device 4 sorts each tobacco leaf according to the determined tobacco leaf grade based on each tobacco leaf and grading information received from the grading device 3, thereby improving the efficiency of grading and sorting, and can also increase the transportation efficiency of tobacco leaves, avoid tobacco leaf accumulation, have a high degree of automation, reduce labor, and improve production efficiency.

[0049] The feeding device 1 can feed and convey tobacco leaves placed in a certain direction in multiple ways, and can also comb and shape the tobacco leaves during the feeding process so that they are placed in a certain direction and conveyed in multiple ways.

[0050] The stratification device 2 can be partially connected to the end gap of the feeding device 1 to receive the transported tobacco leaves, and partially located below the end of the feeding device 1 to receive the tobacco leaves falling from the gap to achieve stratification.

[0051] The stratification device 2 can also be located below the feeding device 1, with different layers receiving tobacco leaves to achieve stratification.

[0052] like Figures 1 to 3 As shown, the layering device 2 is located below the dropping area of ​​the feeding device 1. The layering device 2 has multiple layers of first conveying mechanisms 21 in the upper and lower directions, which are used to receive the tobacco leaves dropped from the feeding device 1 and perform layering.

[0053] The drop zone is the end of the feeding device 1 in the conveying direction. The multi-layer first conveying mechanism 21 of the layering device 2 is located at the very end of the feeding device 1 and can receive tobacco leaves that fall from the end of the feeding device 1. The drop zone can also be extended in the conveying direction of the feeding device 1, with the layering device 2 being located below the feeding device 1. The first conveying mechanisms 21 of different layers receive falling tobacco leaves during the feeding device 1's transport and drop process.

[0054] The multiple layers of the first conveying mechanisms 21 can be arranged in parallel or at an angle, can be extended in the transverse direction, or can be inclined, such as being inclined gradually away from each other.

[0055] Furthermore, the blanking area extends along the conveying direction on the feeding conveying mechanism of the feeding device 1, and the multi-layer first conveying mechanism 21 extends below the blanking area.

[0056] Multiple layers of first conveyor mechanisms 21 are arranged in vertically spaced intervals. Each layer of the first conveyor mechanism 21 comprises multiple first conveyor belts 211 spaced laterally apart. The multiple layers of first conveyor belts 211 are vertically staggered. By having multiple first conveyor belts 211 on each layer of the first conveyor mechanism 21, the tobacco leaf transport capacity and speed can be increased, improving the efficiency of tobacco leaf identification and grading.

[0057] The present invention extends the dropping area along the conveying direction onto the feeding conveying mechanism of the feeding device 1, thereby increasing the dropping area and improving the efficiency of the dropping layering. By staggering the multiple layers of first conveyor belts 211 in sequence vertically, each first conveyor belt 211 of each layer can receive the tobacco leaves dropped from the feeding device 1, quickly perform layering, and further improve the layering efficiency.

[0058] The number of feeding paths of the feeding device 1 is greater than the number of the first conveyor belts 211 on each layer, which can increase the number of feeding paths and ensure the efficiency and speed of layering and grading sorting.

[0059] The tobacco leaf conveying speed of the grading device 3 is greater than the tobacco leaf conveying speed of the stratification device 2 and greater than the tobacco leaf conveying speed of the feeding device 1.

[0060] After the tobacco leaves are fed into the present invention, they are accelerated in the first stage by the stratification device 2 to complete the first stage increase in the distance between the tobacco leaves; then they enter the sorting device 4 for secondary acceleration to complete the second stage increase in the distance between the tobacco leaves; by leaving a sufficiently large distance, sufficient time is left for the grading device 3 to complete the grading and identification of each tobacco leaf, thereby improving the identification accuracy of the grading device 3.

[0061] When the graded tobacco leaves are transported to the position where the sorting device 4 sorts the tobacco leaves of that grade, the sorting device 4 sorts the tobacco leaves and collects all the sorted tobacco leaves of the same grade.

[0062] Preferably, the feeding device 1 is a feeding shaping device for combing the tobacco leaves into lengthwise directions, placing them along the conveying direction and dividing them into multiple conveying paths.

[0063] The first conveying mechanism 21 includes multiple transversely spaced, differentially arranged shape-adjusting conveyor belts 11. The first conveying mechanism 21 of each layer is arranged vertically opposite to the gap between two adjacent shape-adjusting conveyor belts 11. The blanking area includes the gap between adjacent shape-adjusting conveyor belts 11.

[0064] The present invention arranges a shape-adjusting conveyor belt 11 with a feed shape-adjusting device to sort out the randomly arranged tobacco leaves during the process of conveying the tobacco leaves. The length direction of the tobacco leaves is extended along the conveying direction, which facilitates the tobacco leaves to fall from the gaps between the multiple shape-adjusting conveyor belts 11 and fall onto the first conveying mechanism 21 of each layer directly below the gaps.

[0065] The gaps between the multi-channel shape-adjustable conveyor belts 11 are sequentially arranged vertically opposite to the first conveyor belts 211 of the first column, the second column, the third column, ... the nth column of the multi-layer first conveying mechanism 21 .

[0066] Specifically, the feeding shape adjustment device includes 14 shape adjustment conveyor belts 11, and the number of first conveyor belts 211 is 15. The layering device 2 includes 3 layers of first conveying mechanisms 21, and each layer of the first conveying mechanism 21 includes 5 first conveyor belts 211.

[0067] The stratification device 2 also includes a stratification frame 22. The top of the stratification frame 22 has a concave cavity 221 extending along the direction of tobacco conveyance. The multi-layered first conveying mechanism 21 is disposed within the concave cavity 221, spaced closely together above and below. The feeding device 1 is mounted on the stratification frame 22 above the multi-layered first conveying mechanism 21.

[0068] The present invention arranges the multi-layer first conveying mechanism 21 in the top cavity 221 of the layering rack 22 at intervals, and arranges the feeding conveying mechanism above the multi-layer first conveying mechanism 21. It can receive the falling tobacco leaves below the feeding conveying mechanism and prevent the accidentally fallen tobacco leaves from falling to the ground. It can also enable the feeding device 1 to be installed on the top of the layering rack 22, saving space and making it convenient to transport and layer the tobacco leaves.

[0069] The two ends of the concave cavity 221 in the extension direction can be set through, so as to facilitate the first conveying mechanism 21 in the concave cavity 221 to cooperate with other mechanisms to convey tobacco leaves.

[0070] The 15 gaps between the 14 shape-adjustable conveyor belts 11 and the side walls of the concave cavity 221 are arranged opposite to the first conveyor belt 211 of the 1st layer, the 2nd layer and the 3rd layer, the second first conveyor belt 211 of the 1st layer, the 2nd layer and the 3rd layer, the third first conveyor belt 211 of the 1st layer, the 2nd layer and the 3rd layer, the fourth first conveyor belt 211 of the 1st layer, the 2nd layer and the 3rd layer, and the fifth first conveyor belt 211 of the 1st layer, the 2nd layer and the 3rd layer.

[0071] The multi-channel shape-adjustable conveyor belt 11 extends in the same direction as the first conveyor belt 211 at the opening of the cavity 221, spaced apart along the width direction, and positioned above the first conveyor belt 211. A certain gap is provided in the horizontal direction between the multi-channel shape-adjustable conveyor belt 11 and the inner sidewalls of the cavity 221 on both sides of the extension direction. This gap between the shape-adjustable conveyor belt 11 and the sidewalls of the cavity 221 allows for material leakage, thereby increasing the number of first conveyor belts 211 per underlying layer.

[0072] Specifically, the feeding device 1 includes a feeding frame disposed above the opening of the support frame 24. The shape-adjusting conveyor belt 11 is rotatably mounted on the feeding frame and positioned within the opening of the cavity 221. The two multi-channel shape-adjusting conveyor belts 11 at the outermost ends in the width direction are spaced apart from the inner sidewalls of the cavity 221 to allow for material leakage.

[0073] The material dropping area includes the material dropping distances between the two outermost shape-adjusting conveyor belts 11 and the inner side walls of the corresponding concave cavities 221 .

[0074] The total number of the shape-adjusting conveyor belts 11 is less than the total number of the first conveyor belts 211 of the layering device 2 .

[0075] Furthermore, the layering device 2 includes a multi-layer second conveying mechanism 23 and a support frame 24. The multi-layer second conveying mechanism 23 is disposed on the support frame 24 with upper and lower intervals. The feed end of the multi-layer second conveying mechanism 23 is connected to the discharge end of the multi-layer first conveying mechanism 21 in a one-to-one correspondence. The upper and lower spacing between the multi-layer second conveying mechanisms 23 gradually increases from the feed end to the discharge end.

[0076] Each layer of the second conveyor mechanism 23 includes multiple spaced-apart second conveyor belts 231. The second conveyor belts 231 connect to the discharge end of the first conveyor belt 211, receiving and conveying tobacco leaves from the first conveyor belt 211. The second conveyor belts 231 on each layer extend in the same direction, and the spacing between tobacco leaves on the upper and lower layers of the second conveyor belts 231 gradually increases during the conveyance process.

[0077] Preferably, the layering device 2 includes three layers of second conveying mechanisms 23, and each layer of the second conveying mechanisms 23 includes five second conveyor belts 231. The second conveying mechanisms 23 of the first layer, i.e., the highest layer, are arranged to extend obliquely upward, the second conveying mechanisms 23 of the second layer are arranged to extend horizontally, and the second conveying mechanisms 23 of the third layer are arranged to extend obliquely downward.

[0078] Since the two ends of the concave cavity 221 are through-set in the extension direction, the support frame 24 is located on the outside of the discharge end of the layering frame 22, and the discharge end of the first conveying mechanism 21 extends to the outside of the concave cavity 221, and can be connected with the second conveying mechanism 23 on the support frame 24 to convey the tobacco leaves to the second conveying mechanism 23. The upper and lower spacing between the multiple layers of the second conveying mechanism 23 gradually increases from the feed end to the discharge end, which can reserve operation and / or installation space for the subsequent grading of each layer of tobacco leaves.

[0079] like Figures 4 and 5 As shown, the grading device 3 includes a multi-layer grading conveying mechanism 31 and a scanning grading system.

[0080] Each layer of the grading conveying mechanism 31 is extended horizontally. The multi-layer grading conveying mechanism 31 is arranged at intervals along the vertical direction, and the feeding end of the multi-layer grading conveying mechanism 31 is connected to the discharging end of the multi-layer second conveying mechanism 23 in a one-to-one correspondence.

[0081] The scanning and grading system is located above each layer of the grading and conveying mechanism 31, and is used to obtain the image of each tobacco leaf on each layer of the grading and conveying mechanism 31, compare it with the preset data, and then grade it and generate the ID information of the tobacco leaf.

[0082] A plurality of sorting devices 4 are provided on each layer of the grading and conveying mechanism 31 , which are in communication with the scanning and grading system and are used to sort the tobacco leaves on each layer of the grading and conveying mechanism 31 according to the obtained ID information and grading information.

[0083] The scanning and grading system includes a scanning camera 33 and a server. Each level of the grading and conveying mechanism 31 is provided with a scanning camera 33, and the sorting device 4 is located behind the scanning camera 33, grading first and then sorting.

[0084] The scanning camera 33 is an industrial line scan camera.

[0085] Preferably, the spacing between the multi-layer grading conveying mechanisms 31 is greater than the spacing between the multi-layer first conveying mechanisms 21 .

[0086] The sorting device 4 adopts stacking technology, and each layer of the grading conveying mechanism 31 includes multiple grading conveyor belts 311 arranged at intervals along the transverse direction, and the feeding end is connected to the discharge end of the second conveyor belt 231. The multiple grading conveyor belts 311 are extended transversely.

[0087] Each grading conveyor belt 311 is equipped with a scanning camera 33 and multiple servers. A visual neural network algorithm is used to identify the images scanned by the scanning camera 33 and compare them with the preset levels of the server for grading.

[0088] The sorting device 4 includes a nozzle 41 and a solenoid valve for controlling the opening and closing of the nozzle 41, and adopts a compressed air directional targeting method for sorting.

[0089] Multiple nozzles 41 are positioned sequentially along each layer of the multi-channel grading conveyor belt 311, along the conveying direction, to propel the tobacco leaves. Each grading conveyor belt 311 is equipped with N sets of nozzles 41 and solenoid valves at intervals along the conveying direction. The sorting device 4 is configured as a 5×3×N matrix of stacked integrated modules. The tobacco sorting device 4 utilizes stacking technology, enabling multi-channel, multi-layer, and multi-point output. This device offers flexible configuration, high integration, and high sorting accuracy.

[0090] Preferably, the multiple nozzles 41 on the upper and lower grading conveyor belts 311 are arranged in rows, and each row of nozzles 41 can blow tobacco leaves of the same grade for sorting. More preferably, N is 4, and the tobacco leaves are sorted and output in four grades.

[0091] The present invention uses a solenoid valve and a nozzle 41 for sorting by blowing, and other sorting methods such as grabbing, suction, scraping, and pushing can also be used.

[0092] Furthermore, the device further comprises a collecting device 5 for collecting, according to grade, the tobacco leaves sorted by the sorting device 4. The collecting device 5 comprises a baffle and a collecting conveyor belt.

[0093] The collection conveyor belt is partially located below the multi-layer grading conveyor mechanism 31 and partially extends outside the grading conveyor frame 32. On the other side of each grading conveyor belt 311, N sets of baffles are installed along the conveying direction, equal in number to the number of nozzles 41. These N sets of baffles extend vertically, facing the N nozzles 41, to block the tobacco leaves blown by the nozzles 41 and guide them downward onto the collection conveyor belt. Each layer of baffles is arranged in a vertical row, corresponding to the multiple nozzles 41.

[0094] The collection conveyor belt is located below each row of baffles. Its number is equal to the number N of baffle and nozzle groups 41. It is used to collect tobacco leaves of the same grade that fall from the baffles in that row and transport them to the exterior of the grading conveyor rack 32, enabling multi-path and multi-point collection. The collection conveyor belt is arranged perpendicular to the conveying direction of the grading conveyor belt 311.

[0095] The portion of the collecting conveyor belt located outside the multi-layer grading conveying mechanism 31 is extended upwardly and tilted to facilitate collection and save space.

[0096] Furthermore, the feeding device 1 is provided with a material diverting mechanism 12, which is arranged above the shape-adjusting conveyor belt 11 and is used to cooperate with the shape-adjusting conveyor belt 11 to thin and loosen the tobacco layer, so that the layer thickness of the tobacco layer is reduced.

[0097] There is a certain gap between the material-diverting mechanism 12 and the shape-adjusting conveyor belt 11, so that the thinner tobacco layer can pass through smoothly, and the thicker tobacco layer above the material-diverting gap is shifted down by the material-diverting mechanism 12, falls back onto the shape-adjusting conveyor belt 11, and then re-enters the material-diverting gap, repeating the above action.

[0098] The material-dispensing mechanism 12 comprises a plurality of rows of material-dispensing rollers which are sequentially arranged above the shape-adjusting conveyor belt 11 along the traveling direction of the tobacco leaves and are rotatably arranged on the feeding rack via a rotating shaft.

[0099] The device of the present invention can not only grade tobacco leaves, but also remove impure tobacco leaves and ungraded tobacco leaves according to customer needs.

[0100] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make slight changes or modifications to equivalent embodiments of equivalent changes using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. The implementation schemes in the above-mentioned embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above-mentioned embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A multi-channel tobacco layering, grading and sorting equipment, characterized in that: include: A feeding device for conveying multiple streams of tobacco leaves; A layering device, cooperating with the feeding device, is used to layer and convey the received tobacco leaves from multiple paths; a grading device, cooperating with the layering device, for receiving multiple layers of tobacco leaves conveyed by the layering device and grading each tobacco leaf in each layer; The sorting device is in communication with the grading device and is used to sort the tobacco leaves by grade according to the tobacco leaf grades received from the grading device.

2. The multi-channel tobacco layering, grading and sorting equipment according to claim 1, characterized in that: The stratification device is located below the dropping area of ​​the feeding device. The stratification device has multiple layers of first conveying mechanisms in the upper and lower directions, which are used to respectively receive the tobacco leaves dropped from the feeding device for stratification.

3. The multi-channel tobacco layering, grading and sorting equipment according to claim 2, characterized in that: The blanking area is extended along the conveying direction and is arranged on the feeding conveying mechanism of the feeding device. The multiple layers of first conveying mechanisms are arranged at intervals up and down and extend below the blanking area. Each layer of the first conveying mechanism has multiple first conveying belts arranged at intervals, and the first conveying belts of adjacent layers are staggered in sequence in the vertical direction.

4. A multi-channel tobacco layering, grading and sorting device according to any one of claims 2-3, characterized in that: The tobacco leaf conveying speed of the grading device is greater than the tobacco leaf conveying speed of the stratification device, which is greater than the tobacco leaf conveying speed of the feeding device.

5. A multi-channel tobacco layering, grading and sorting device according to any one of claims 2 to 4, characterized in that: The feeding device is a feeding shaping device, which is used to comb the tobacco leaves into lengthwise directions and place them along the conveying direction and divide them into multiple conveying paths; The feeding shape-adjusting device comprises multiple shape-adjusting conveyor belts which are arranged at different speeds and arranged at different transverse intervals. The first conveying mechanism of each layer is arranged vertically opposite to the gap between two adjacent shape-adjusting conveyor belts.

6. The multi-channel tobacco layering, grading and sorting equipment according to claim 5, characterized in that: The layering device also includes a layering frame, the top of which has a concave cavity extending along the tobacco conveying direction; the multi-layer first conveying mechanism is arranged in the concave cavity, and is spaced closely together at the top and bottom; The feeding device is arranged on a layered rack above the multi-layer first conveying mechanism.

7. The multi-channel tobacco layering, grading and sorting equipment according to claim 6, characterized in that: A multi-channel shape-adjustable conveyor belt extends in the same direction as the first conveyor belt and is arranged at the opening of the cavity and is located above the first conveyor belt; There is a certain material leakage distance between the multi-channel shape-adjustable conveyor belt and the inner side wall of the cavity on both sides of the extension direction in the horizontal direction.

8. The multi-channel tobacco layering, grading and sorting equipment according to any one of claims 5 to 7, characterized in that: The total number of the shape-adjusting conveyor belts is less than the total number of the first conveyor belts of the layering device; Preferably, the feed shape adjustment device includes 14 shape adjustment conveyor belts, the layering device includes 3 layers of first conveying mechanisms, and each layer of the first conveying mechanism includes 5 first conveyor belts.

9. The multi-channel tobacco layering, grading and sorting equipment according to any one of claims 5 to 8, characterized in that: The layering device further comprises a multi-layer second conveying mechanism and a support frame, wherein the multi-layer second conveying mechanism is arranged on the support frame at intervals up and down; The feed ends of the multi-layer second conveying mechanisms are connected to the discharge ends of the multi-layer first conveying mechanisms in a one-to-one correspondence, and the upper and lower spacing between the multi-layer second conveying mechanisms gradually increases from the feed end to the discharge end.

10. The multi-channel tobacco layering, grading and sorting equipment according to claim 9, characterized in that: The grading device comprises: Multi-layer grading conveying mechanism, each layer of grading conveying mechanism is extended horizontally, and the multi-layer grading conveying mechanism is arranged at intervals along the vertical direction, and the feeding end is connected with the discharging end of the multi-layer second conveying mechanism in a one-to-one correspondence; The scanning and grading system is located above each level of the grading and conveying mechanism, and is used to obtain the image of each tobacco leaf on each level of the grading and conveying mechanism, compare it with the preset data, and then grade it and generate ID information; Each layer of the grading conveying mechanism is provided with a plurality of sorting devices, which are in communication with the scanning and grading system and are used to sort the tobacco leaves on each layer of the grading conveying mechanism according to the obtained ID information and grading information; Preferably, the spacing between the multiple layers of graded conveying mechanisms is greater than the spacing between the multiple layers of first conveying mechanisms; Preferably, each layer of the grading and conveying mechanism includes a multi-way grading conveyor belt arranged at intervals along the lateral direction, and the sorting device includes a nozzle and an electromagnetic valve for controlling the opening and closing of the nozzle. The nozzle is located on one side of the conveying direction of the multi-way grading conveyor belt of each layer and is used to blow the tobacco leaves to move.

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