Full-automatic sorting device for foreign matters and sundries in plant leaves

Abstract

The utility model discloses a full-automatic sorting device for foreign matters and sundries in plant leaves, which comprises a belt conveyor and a rejecting system arranged at the rear end of the belt conveyor, the rejecting system comprises an image acquisition device and a plurality of rejecting valves arranged side by side, a plurality of partition plates are arranged above a belt body of the belt conveyor side by side, and a material passing channel is limited between every two adjacent partition plates. And the rejecting valves are in one-to-one correspondence with the material passing channels. Materials distributed on the belt body can enter different material passing channels under the separation of the partition plates, and each material passing channel is provided with a corresponding removing valve. And when the cigarette crutches are mixed in the materials, the corresponding rejecting valves execute the rejecting action, so that the cigarette crutches are blown out. According to the utility model, a corresponding relation is established between the material and the rejecting valve by utilizing the material passing channel, the rejecting action of the rejecting valve is more accurate, and the condition of abnormal discharge of normal tobacco shreds is not easy to occur, so that the sorting effect is guaranteed. And the removing system can automatically identify foreign matters and sundries according to the characteristics of the materials in combination with AI.

Description

Technical Field

[0001] This utility model relates to the field of tobacco processing technology, and in particular, to a fully automatic sorting device for foreign objects and debris in plant leaves. Background Technology

[0002] The tobacco stem, or the coarse, stiff vein of a tobacco leaf, is one of the main raw materials for tobacco shreds. It grows on the tobacco stalk, supporting the tobacco leaf, and is a component of the tobacco leaf, accounting for approximately 25% to 30% of the leaf weight. The "tobacco bend" is the connection point between the tobacco stem and the stalk. After threshing and air-splitting, the tobacco stem is processed into strips of varying thicknesses and lengths. Therefore, it can be said that the tobacco bend is actually part of the tobacco stem, or that the tobacco bend necessarily includes a small section of tobacco stem. The cross-sectional shape of the tobacco stem is nearly U-shaped. In the industry, its maximum width is generally referred to as the tobacco stem diameter. The diameter of the tobacco stem remains relatively consistent along its length. The section of the tobacco stem with one end connecting to the stalk is what is commonly referred to in the industry as the tobacco bend, also called the stem bend. The diameter of the tobacco bend gradually widens along its length, forming a trapezoidal shape, commonly known as the "large end and small end." There is a significant difference in diameter between the two ends; the diameter of the large end is generally greater than 10mm and approximately 1.5 to 2 times the diameter of the small end. Cigarette stems have a hard structure and tend to be woody, making them difficult to moisten thoroughly during the stem moistening process. When they enter the stem pressing process, they cause frequent material blockage in the pressing rollers. Furthermore, they do not expand easily after being cut into strips, directly affecting the quality of cigarette products. Therefore, cigarette stems are generally regarded as impurities and need to be removed.

[0003] Currently, Chinese patent CN105396795B discloses a method for removing tobacco stems from tobacco stems using a machine vision-based device. The method includes a vibrating conveyor, a high-speed belt conveyor connected to the vibrating conveyor, and a removal system located at the rear of the high-speed belt conveyor. The removal system includes an image acquisition device, a lighting source, a background light source, an image processing system, a removal valve located at the rear of the high-speed belt conveyor, a tobacco stem channel, and a tobacco stem / tobacco stem channel. In use, the vibrating conveyor vibrates and distributes the material, and then the single-layered material enters the high-speed belt conveyor and is ejected. The removal system identifies the foreign object and controls the corresponding removal valve to spray gas to blow it into the tobacco stem / tobacco stem channel.

[0004] However, the material distribution on the conveyor belt is irregular, especially relative to the rejection valves, where there is no absolute correspondence between the material and the rejection valves. Therefore, it's easy for the cigarette clipper to be positioned between two rejection valves. In this case, both rejection valves need to perform their rejection actions to blow the clipper out, but this can easily cause abnormal discharge of normal tobacco, ultimately reducing the sorting efficiency. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a fully automatic sorting device for foreign objects and debris in plant leaves.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] An automated sorting device for foreign objects and debris in plant leaves includes a belt conveyor and a rejection system located at the rear end of the belt conveyor. The rejection system includes an image acquisition device and a plurality of rejection valves arranged side by side. A plurality of baffles are arranged side by side above the belt of the belt conveyor, and a material passage is defined between adjacent baffles. The plurality of rejection valves correspond one-to-one with the plurality of material passages.

[0008] Preferably, a guide slope is provided on the side wall at the front end of the partition.

[0009] Preferably, a sealing strip is provided on the side wall of the partition, and the sealing strip extends toward the belt body of the conveyor belt.

[0010] Preferably, the sealing tape is an adhesive tape.

[0011] Preferably, a mounting frame is provided on the frame of the belt conveyor above its belt body, and the partition is disposed on the mounting frame.

[0012] Preferably, a roller brush is rotatably provided at the inlet of the material passage, and there is a material passage gap between the roller brush and the belt body of the conveyor belt. The rotation direction of the roller brush is opposite to the transfer direction of the conveyor belt.

[0013] Preferably, a connecting rod is rotatably mounted on the frame of the belt conveyor, and a plurality of the roller brushes are mounted on the connecting rod.

[0014] Preferably, the frame of the belt conveyor is further provided with a connecting seat, a first gear is rotatably provided on the connecting seat, a second gear is provided on the connecting rod, and a toothed structure is provided on the belt body of the belt conveyor, the toothed structure meshing with the first gear.

[0015] The beneficial effects of this invention are as follows: the material distributed on the conveyor belt enters different material passages separated by partitions, and each material passage has a corresponding rejection valve. When tobacco shreds are mixed in with the material, the corresponding rejection valve performs a rejection action, thereby blowing the tobacco shreds out. Compared with the prior art, this invention establishes a correspondence between the material and the rejection valve by utilizing the material passages. The rejection action of the rejection valve is more precise, and it is less likely to cause abnormal discharge of normal tobacco shreds, thus ensuring the sorting effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment;

[0017] Figure 2 This is a schematic diagram of the partition structure;

[0018] Figure 3 This is a schematic diagram of the roller brush structure;

[0019] Figure 4 This is a schematic diagram of the sealing strip.

[0020] Reference numerals: 1. Belt conveyor; 2. Rejection system; 3. Image acquisition device; 4. Rejection valve; 5. Belt body; 6. Partition plate; 7. Material passage; 8. Guide slope; 9. Sealing strip; 10. Mounting frame; 11. Roller brush; 12. Material passage gap; 13. Connecting rod; 14. Connecting seat; 15. First gear; 16. Second gear; 17. Toothed structure. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] like Figures 1 to 4 As shown, an automated sorting device for foreign objects and debris in plant leaves includes a vibrating conveyor, a belt conveyor 1, and a rejection system 2 located at the rear end of the belt conveyor 1, which are connected in sequence. The vibrating conveyor can vibrate and flatten the material, causing the material to become discrete when it falls onto the belt body 5 of the belt conveyor 1. The discrete material is then transferred to the rejection system 2, where defective products are removed.

[0023] For example, the rejection system 2 may specifically include an image acquisition device 3, an illumination source, a background light source, an image processing system, a rejection valve 4 located at the rear end of the high-speed belt conveyor 1, a smoke stem channel, and a smoke wick channel. As the material moves with the belt 5, the image acquisition device 3, such as a camera, can capture images of the material. The captured information is transmitted to the image processing system, which can automatically determine the material's properties based on relevant algorithms, such as AI. Subsequently, by controlling the corresponding rejection valve 4 to spray airflow, the smoke wick can be blown into the smoke wick channel.

[0024] In possible examples, whether a material is considered foreign matter can be automatically determined by judging its area, color, and other attributes. This invention can be applied to the sorting of foreign matter and debris in any plant leaf production process. This embodiment preferably uses the sorting of tobacco stalks and stems as an example, but this example should not be construed as a limitation of this invention.

[0025] In some embodiments, a mounting frame 10 is provided above the belt body 5 of the belt conveyor 1, and a plurality of partitions 6 are arranged side by side on the mounting frame 10, with a material passage 7 defined between adjacent partitions 6. A plurality of rejection valves 4 are also arranged side by side in the transverse direction, and the plurality of rejection valves 4 correspond one-to-one with the plurality of material passages 7.

[0026] For example, a guide ramp 8 is also adapted to be provided on the front side wall of the partition 6. Under the separation of the partition 6, the material on the belt 5 will enter the nearest different material passage 7. At this time, after the image acquisition device 3 takes a picture of the material, it can also obtain information on which material passage 7 the material is located in, thereby establishing the correspondence between the material and the corresponding rejection valve 4. Subsequently, when foreign objects appear in the material, the corresponding rejection valve 4 performs a rejection action to blow out the foreign objects.

[0027] In a specific example, a sealing strip 9 is provided on the side wall of the partition 6, and the sealing strip 9 extends towards the belt body 5. It can be understood that the sealing strip 9 can stop the material, thereby restricting the movement of the material within the material passage 7. Furthermore, the partition 6 and the belt body 5 can maintain a certain distance to prevent collisions. Preferably, the sealing strip 9 can be an adhesive tape or a rubber strip.

[0028] In a preferred embodiment, a connecting rod 13 is rotatably mounted on the mounting frame 10. Several roller brushes 11 are axially mounted on the connecting rod 13, each roller brush 11 corresponding to one of several material passages 7. For example, the connecting rod 13 can rotate under the drive of a motor or other driving component, especially rotating in the opposite direction to the conveyor belt 1. A material passage gap 12 is fitted between the roller brushes 11 and the belt body 5. When a single layer of material passes through the roller brushes 11, the material smoothly enters the material passage 7 due to the material passage gap 12. When the material is stacked, the excess material is pushed away from the material passage 7 by the roller brushes 11 and then re-enters the inlet until material of the appropriate height smoothly passes through the roller brushes 11.

[0029] In another configuration, the frame of the belt conveyor 1 is also equipped with a connecting seat 14, on which a first gear 15 is rotatably mounted, while a second gear 16 is mounted on the connecting rod 13. The belt body 5 is equipped with a toothed structure 17. The second gear 16, the first gear 15, and the toothed structure 17 mesh sequentially. Therefore, as the belt body 5 moves, the second gear 16, the first gear 15, and the toothed structure 17 drive the connecting rod 13 to rotate in the desired direction.

[0030] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. An automated sorting device for foreign objects and debris in plant leaves, comprising a belt conveyor (1) and a rejection system (2) disposed at the rear end of the belt conveyor (1), wherein the rejection system (2) comprises an image acquisition device (3) and a plurality of rejection valves (4) arranged side by side, characterized in that: The belt conveyor (1) has several partitions (6) arranged side by side above the belt body (5), and a material passage (7) is defined between adjacent partitions (6). Several rejection valves (4) correspond one-to-one with several material passages (7).

2. The fully automatic sorting device for foreign objects and debris in plant leaves according to claim 1, characterized in that: A guide slope (8) is provided on the side wall at the front end of the partition (6).

3. The fully automatic sorting device for foreign objects and debris in plant leaves according to claim 1, characterized in that: A sealing strip (9) is provided on the side wall of the partition (6), and the sealing strip (9) extends toward the belt body (5) of the belt conveyor (1).

4. The full-automatic sorting device for foreign matters and sundries in plant leaves according to claim 3, characterized in that: The sealing strip (9) is an adhesive tape.

5. The full-automatic sorting device for foreign matters and sundries in plant leaves according to any one of claims 1-4, characterized in that: The belt conveyor (1) has a mounting frame (10) located above its belt body (5) on its frame, and the partition plate (6) is mounted on the mounting frame (10).

6. The full-automatic sorting device for foreign matters and sundries in plant leaves according to any one of claims 1-4, characterized in that: A roller brush (11) is rotatably provided at the inlet of the material passage (7). There is a material passage gap (12) between the roller brush (11) and the belt body (5) of the belt conveyor (1). The rotation direction of the roller brush (11) is opposite to the transfer direction of the belt conveyor (1).

7. The fully automatic sorting device for foreign objects and debris in plant leaves according to claim 6, characterized in that: A connecting rod (13) is rotatably mounted on the frame of the belt conveyor (1), and a plurality of roller brushes (11) are mounted on the connecting rod (13).

8. The full-automatic sorting device for foreign matter and sundry in plant leaves according to claim 7, characterized in that: The belt conveyor (1) is also provided with a connecting seat (14), a first gear (15) is rotatably provided on the connecting seat (14), a second gear (16) is provided on the connecting rod (13), and a toothed structure (17) is provided on the belt body (5) of the belt conveyor (1), which meshes with the first gear (15).

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