Threshing and redrying online tobacco leaf structure automatic detection device

Abstract

The utility model relates to a threshing and redrying online tobacco leaf structure automatic detection device which is arranged at the rear end of a threshing unit and comprises a low-speed belt conveyor, a vibrating conveyor, a medium-speed belt conveyor, a high-speed belt conveyor, an X-ray imaging device and a CCD (Charge Coupled Device) camera. After the threshing unit, materials (tobacco leaves) enter the low-speed belt conveyor and fall on the vibrating conveyor, the vibrating conveyor further loosens and thinns the materials, then the materials sequentially pass through the medium-speed belt conveyor and the high-speed belt conveyor to achieve the discretization effect, when the materials pass through the medium-speed belt conveyor, first imaging is completed through the X-ray imaging device, and second imaging is completed through the high-speed belt conveyor. And the materials continue to move forwards to enter the high-speed belt conveyor, and secondary imaging is completed through the CCD camera at the moment of leaving the driven roller of the high-speed belt conveyor. The problems that in the production process, the manpower and time cost of quality inspection sampling is too high, and human factor interference possibly exists during manual sampling are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of tobacco production, in particular to an automatic detection device for leaf structure of leaf-threshing and re-drying online tobacco leaves. Background Art

[0002] The threshing and stemming process in the threshing and redrying production line is responsible for separating the tobacco leaves from the stems through the mutual movement of the threshing rollers and knives of the threshing unit and the frame, and then selecting the tobacco leaves that meet the size standards after air separation by the air separator. The most important process indicator in the threshing and stemming process is the leaf structure indicator of the threshed tobacco leaves.

[0003] At present, in the process of leaf threshing and redrying, due to the differences in raw materials, the structure and size of the tobacco leaves produced in the leaf threshing process fluctuate. In order to ensure stable quality, at least three leaf structure tests are required for each shift of production self-inspection. The sampling method is manual sampling, and the quality inspector uses both hands to hold a sample weighing 3kg at the sampling point of the summary belt. The stacking of materials on the summary belt can be divided into large pieces, medium pieces, small pieces and broken tobacco leaves from top to bottom. In the process of manual sampling, differences in sample weight and structure will occur due to differences in sampling methods of the samplers, affecting the objectivity of the test results.

[0004] In view of the above problems, the inventor of the present invention finally obtained the present invention after a long period of research and practice. Utility Model Content

[0005] In order to solve at least one aspect of the above technical problems, the utility model provides an automatic detection device for the leaf structure of tobacco leaves during leaf beating and re-drying, which solves the problems of high manpower and time costs for quality inspection sampling in the production process, and possible interference from human factors during manual sampling.

[0006] The technical solution adopted by the utility model is:

[0007] Provided is an automatic detection device for leaf structure of leaf strips in threshing and redrying, which is arranged at the rear end of a threshing unit and comprises a low-speed belt conveyor 1, a vibrating conveyor 3, a medium-speed belt conveyor 4, a high-speed belt conveyor 5, an X-ray imaging device 6 and a CCD camera 7.

[0008] The input end of the low-speed belt conveyor 1 is connected to the output end of the leaf threshing unit, and the output end of the low-speed belt conveyor 1 is connected to the input end of the vibrating conveyor 3; the output end of the vibrating conveyor 3 is connected to the input end of the medium-speed belt conveyor 4, and the output end of the medium-speed belt conveyor 4 is connected to the input end of the high-speed belt conveyor 5;

[0009] The X-ray imaging device 6 is arranged close to the medium-speed belt conveyor 4 for performing X-ray imaging of the tobacco leaves on the medium-speed belt conveyor 4 ; the CCD camera 7 is arranged close to the high-speed belt conveyor 5 for performing imaging of the tobacco leaves on the high-speed belt conveyor 5 .

[0010] Furthermore, a rake roller 2 is provided near the output end of the low-speed belt conveyor 1, and the tobacco leaves on the low-speed belt conveyor 1 pass through the rake roller 2 and evenly fall to the input end of the vibrating conveyor.

[0011] Furthermore, the material conveying directions of the low-speed belt conveyor 1 and the vibrating conveyor 3 are opposite, and the material conveying directions of the medium-speed belt conveyor 4 and the high-speed belt conveyor 5 are opposite.

[0012] Furthermore, the CCD camera 7 is arranged at the output end of the high-speed belt conveyor 5 .

[0013] Furthermore, the automatic detection device for leaf structure of online tobacco leaves during leaf beating and re-drying also includes an electronic controller 8, and the low-speed belt conveyor 1, the vibrating conveyor 3, the medium-speed belt conveyor 4 and the high-speed belt conveyor 5 are respectively connected to the electronic controller 8.

[0014] Furthermore, the X-ray imaging device 6 and the CCD camera 7 are connected to the control system 9 of the leaf threshing unit.

[0015] Furthermore, the input end of the low-speed belt conveyor 1 is connected to the outlet end of the air separator of the leaf beating unit.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The automatic detection device of the utility model can perform a cyclic detection on 6 air separators after one dozen every hour, with high operating efficiency, and completely solves the problems of excessively high manpower and time costs for quality inspection sampling in the production process, and possible interference from human factors during manual sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram showing the working principle of the automatic detection device for leaf structure of tobacco leaves in the threshing and re-drying process according to the embodiment of the utility model;

[0020] Figure 2A control architecture diagram of an automatic detection device for leaf structure of leaf-threshing and re-drying online tobacco leaves according to an embodiment of the utility model is shown;

[0021] Figure 3 A schematic structural diagram of an automatic detection device for leaf structure of tobacco leaves in a beating and re-drying process according to an embodiment of the utility model is shown. DETAILED DESCRIPTION

[0022] The above and other technical features and advantages of the present invention are described in more detail below in conjunction with the accompanying drawings.

[0023] As used herein, the term "including" and its variations mean open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "based at least in part on". The terms "an example embodiment" and "an embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". Other explicit and implicit definitions may also be included below.

[0024] like Figure 1 , Figure 3 As shown, the automatic detection device for the structure of leaf tobacco leaves in the threshing and re-baking line is arranged at the rear end of the threshing unit (not shown in the figure), including a low-speed belt conveyor 1, a vibrating conveyor 3, a medium-speed belt conveyor 4, a high-speed belt conveyor 5, an X-ray imaging device 6 and a CCD camera 7. The input end of the low-speed belt conveyor 1 is docked with the output end of the threshing unit, and the output end of the low-speed belt conveyor 1 is docked with the input end of the vibrating conveyor 3. The output end of the vibrating conveyor 3 is docked with the input end of the medium-speed belt conveyor 4, and the output end of the medium-speed belt conveyor 4 is docked with the input end of the high-speed belt conveyor 5. The X-ray imaging device 6 is arranged near the medium-speed belt conveyor 4, and is used to perform X-ray imaging on the tobacco leaves on the medium-speed belt conveyor 4. The CCD camera 7 is arranged near the high-speed belt conveyor 5, and is used to perform imaging on the tobacco leaves on the high-speed belt conveyor 5. Preferably, the CCD camera 7 is arranged at the output end of the high-speed belt conveyor 5. The vibrating conveyor 3, the medium-speed belt conveyor 4 and the high-speed belt conveyor 5 complete the single-layer paving of the material.

[0025] After the leaf threshing unit, the material (tobacco leaves) enters the low-speed belt conveyor 1 and falls onto the vibrating conveyor 3. The vibrating conveyor 3 further loosens and thins the material, and then passes through the medium-speed belt conveyor 4 and the high-speed belt conveyor 5 in turn to achieve a discretization effect. When the material passes through the medium-speed belt conveyor 4, the first imaging is completed by the X-ray imaging device 6. The material continues to move forward and enters the high-speed belt conveyor 5. The second imaging is completed by the CCD camera at the moment of leaving the passive roller of the high-speed belt conveyor 5. The automatic detection device makes the material meet the imaging conditions by averaging, loosening, thinning, and discretizing, and then performs online tobacco leaf imaging through two sets of imaging devices of visible light and X-rays. It is highly efficient and completely solves the problems of high manpower and time costs for quality inspection sampling in the production process, and possible interference from human factors during manual sampling.

[0026] More specifically, the input end of the low-speed belt conveyor 1 is connected to the outlet end of the air separator of the leaf threshing unit. That is, the automatic detection device can intercept the leaves at the outlet of each air separator of the leaf threshing unit in real time during the production process.

[0027] In a preferred embodiment, the material conveying directions of the low-speed belt conveyor 1 and the vibrating conveyor 3 are opposite, the conveying directions of the vibrating conveyor 3 and the medium-speed belt conveyor 4 are the same, and the material conveying directions of the medium-speed belt conveyor 4 and the high-speed belt conveyor 5 are opposite. The low-speed belt conveyor 1, the vibrating conveyor 3, the medium-speed belt conveyor 4, and the high-speed belt conveyor 5 are arranged layer by layer from top to bottom. With this conveying route, the volume of the automatic detection device can be greatly reduced, and the structure is compact.

[0028] In a preferred embodiment, a rake roller 2 is provided near the output end of the low-speed belt conveyor 1. When the tobacco leaves on the low-speed belt conveyor 1 are output, they are further evenly distributed through the rake roller 2. The low-speed belt conveyor 1 cooperates with the rake roller 2 to form a uniform feeding structure, so that the output tobacco leaves fall evenly to the input end of the vibrating conveyor.

[0029] like Figure 2 As shown, more specifically, the power devices of the low-speed belt conveyor 1, the raking roller 2, the vibrating conveyor 3, the medium-speed belt conveyor 4 and the high-speed belt conveyor 5 are respectively connected to the electric controller 8. The electric controller 8 can control the speed of the raking roller and the belt conveying speed, so as to adjust the thinning and discrete states of the tobacco leaves and improve the image acquisition quality. The X-ray imaging device 6 and the CCD camera 7 are connected to the control system 9 of the threshing unit to send the image data to the control system 9 of the threshing unit.

[0030] This detection device is equipped with two imaging systems, visible light and X-ray, which can reflect the leaf structure, stem length rate, leaf stem content rate, and stem leaf content rate of tobacco leaves. When the X-ray power is turned off, only the visible light imaging function is available, which can only reflect the leaf structure and stem length rate.

[0031] The above are only preferred embodiments of the present invention, which are only illustrative and not restrictive. The structures and connection modes of the components in the present invention can be changed, and any equivalent transformations and improvements based on the technical solution of the present invention should not be excluded from the protection scope of the present invention.

Claims

1. An automatic detection device for leaf structure of tobacco leaves during leaf threshing and re-drying, characterized in that: It is arranged at the rear end of the leaf threshing unit and includes a low-speed belt conveyor (1), a vibrating conveyor (3), a medium-speed belt conveyor (4), a high-speed belt conveyor (5), an X-ray imaging device (6) and a CCD camera (7). The input end of the low-speed belt conveyor (1) is connected to the output end of the leaf threshing unit, and the output end of the low-speed belt conveyor (1) is connected to the input end of the vibrating conveyor (3); the output end of the vibrating conveyor (3) is connected to the input end of the medium-speed belt conveyor (4), and the output end of the medium-speed belt conveyor (4) is connected to the input end of the high-speed belt conveyor (5); The X-ray imaging device (6) is arranged close to the medium-speed belt conveyor (4) and is used to perform X-ray imaging on the tobacco leaves on the medium-speed belt conveyor (4); the CCD camera (7) is arranged close to the high-speed belt conveyor (5) and is used to perform imaging on the tobacco leaves on the high-speed belt conveyor (5).

2. The automatic detection device for leaf structure of leaf tobacco leaves during threshing and redrying as claimed in claim 1, characterized in that: A raking roller (2) is provided near the output end of the low-speed belt conveyor (1), and tobacco leaves on the low-speed belt conveyor (1) pass through the raking roller (2) and evenly fall to the input end of the vibrating conveyor.

3. The automatic detection device for leaf structure of tobacco leaves during threshing and re-baking as claimed in claim 1, characterized in that: The material conveying directions of the low-speed belt conveyor (1) and the vibrating conveyor (3) are opposite, and the material conveying directions of the medium-speed belt conveyor (4) and the high-speed belt conveyor (5) are opposite.

4. The automatic detection device for leaf structure of tobacco leaves during threshing and re-drying as claimed in claim 1, characterized in that: The CCD camera (7) is arranged at the output end of the high-speed belt conveyor (5).

5. The automatic detection device for leaf structure of tobacco leaves during threshing and re-drying as claimed in claim 1, characterized in that: It also includes an electric controller (8), and the low-speed belt conveyor (1), the vibrating conveyor (3), the medium-speed belt conveyor (4) and the high-speed belt conveyor (5) are respectively connected to the electric controller (8).

6. The automatic detection device for leaf structure of tobacco leaves during threshing and re-baking as claimed in claim 1, characterized in that: The X-ray imaging device (6) and the CCD camera (7) are connected to a control system (9) of the leaf threshing unit.

7. The automatic detection device for leaf structure of leaf tobacco leaves during threshing and re-baking as claimed in claim 1, characterized in that: The input end of the low-speed belt conveyor (1) is connected to the outlet end of the air separator of the leaf beating unit.

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