Tobacco leaf impurity screening and removing device and system

Abstract

The utility model discloses a tobacco leaf impurity screening and removing device and system, relates to the field of tobacco equipment, and aims to improve the removing efficiency of clustered materials mixed in tobacco leaves. The tobacco leaf impurity screening and removing device comprises a rack, a first star-shaped roller assembly, a second star-shaped roller assembly and a conveying belt. The first star-shaped roller assembly is rotatably installed on the machine frame. The second star-shaped roller assembly is rotatably mounted on the rack; the second star-shaped roller assembly is located on the downstream portion of the first star-shaped roller assembly and used for containing and conveying materials removed by the first star-shaped roller assembly. The mounting position of the conveying belt is lower than that of the first star-shaped roller assembly and that of the second star-shaped roller assembly, and the conveying belt is configured to receive materials falling from the first star-shaped roller assembly and that falling from the second star-shaped roller assembly. According to the technical scheme, the removing efficiency is high, and the automation degree is high.

Description

Technical Field

[0001] The utility model relates to the field of tobacco equipment, in particular to a device and a system for screening and removing impurities from tobacco leaves. Background Art

[0002] With the improvement of the automation degree of cut tobacco production, the whole process from tobacco leaves entering the production line of a cigarette factory to producing finished products has gradually got rid of manual assistance. Especially after the tobacco leaves are changed into cut tobacco, there is no longer the process of manually spreading the leaves. Therefore, impurities and mildewed tobacco leaves mixed in the leaves cannot be removed, which seriously affects the sensory quality of cigarette products.

[0003] The inventor found that there are at least the following problems in the prior art: during the conveying process of existing tobacco materials, the removal efficiency of agglomerated materials is low, and the removal equipment is prone to wear. Summary of the Utility Model

[0004] The utility model provides a device and a system for screening and removing impurities from tobacco leaves to improve the removal efficiency of agglomerated materials mixed in tobacco leaves.

[0005] An embodiment of the utility model provides a device for screening and removing impurities from tobacco leaves, which includes a frame, a first star roller assembly, a second star roller assembly and a conveyor belt. The first star roller assembly is rotatably installed on the frame. The second star roller assembly is rotatably installed on the frame; the second star roller assembly is located downstream of the first star roller assembly to receive and convey the materials removed by the first star roller assembly. The installation position of the conveyor belt is lower than that of the first star roller assembly and the second star roller assembly, and the conveyor belt is configured to receive the materials falling from the first star roller assembly and the second star roller assembly.

[0006] In some embodiments, the device for screening and removing impurities from tobacco leaves further includes a first driving device, and the first driving device is drivingly connected to the first star roller assembly to control the running speed of the first star roller assembly.

[0007] In some embodiments, the device for screening and removing impurities from tobacco leaves further includes a second driving device, and the second driving device is drivingly connected to the second star roller assembly to control the running speed of the second star roller assembly.

[0008] In some embodiments, the first star roller assembly and the second star roller assembly have the same structure, and each includes a rotating shaft and blades. The rotating shaft is rotatably installed on the frame; the blades are installed on the surface of the rotating shaft and are integral with or fixedly connected to the rotating shaft.

[0009] In some embodiments, a plurality of the blades are mounted on the surface of each of the rotating shafts, and the blades are dispersedly arranged along the central axis of the rotating shaft.

[0010] In some embodiments, each of the first star roller assembly and the second star roller assembly includes a plurality of the rotating shafts, and the minimum distance between the blades mounted on two adjacent rotating shafts is greater than 0. The material is configured to allow loose material to fall through the gap between the blades mounted on two adjacent rotating shafts.

[0011] In some embodiments, the tobacco leaf sundry screening and removing device further includes a material transferring device, which is mounted on the frame and is located near the first star roller assembly. The material transferring device is configured to convey the agglomerated material screened out by the first star roller assembly to the second star roller assembly.

[0012] In some embodiments, the tobacco leaf sundry screening and removing device further includes a removing barrel, which is placed downstream of the second star roller assembly to receive the agglomerated material conveyed by the second star roller assembly.

[0013] An embodiment of the present invention further provides a tobacco leaf sundry screening and removing system, which includes the tobacco leaf sundry screening and removing device provided by any technical solution of the present invention.

[0014] The tobacco leaf sundry screening and removing device provided by the above technical solution includes a frame, a first star roller assembly, a second star roller assembly and a conveyor belt. The first star roller assembly plays a role in screening the conveyed material. The loose material screened out by the first star roller assembly directly falls through the gap of the first star roller assembly onto the conveyor belt and is conveyed to downstream equipment. The agglomerated material screened out by the first star roller assembly is conveyed to the second star roller assembly for secondary screening. The loose material screened out by the second star roller assembly directly falls through the gap of the second star roller assembly onto the conveyor belt and is conveyed to downstream equipment. The agglomerated material screened out by the second star roller assembly is conveyed to the removing station. The above technical solution can screen the material twice. The agglomerated material that is not broken up by the first star roller assembly will be conveyed to the second star roller assembly for a second screening. Therefore, the probability of the material being loosened can be greatly increased, the operation amount and labor burden of manual loosening can be reduced, the need for manual operation can be reduced, the work burden of the operator can be reduced, the work safety can be improved, the material screening and loosening efficiency can be improved, the high-efficiency removal of abnormal agglomeration of tobacco leaves can be realized, and the quality hidden danger of abnormal sundries flowing into the next process can be reduced. In addition, the tobacco leaf sundry screening and removing device also has the characteristics of high automation and continuous operation. At the same time, there is no problem of motor overload and material breakage caused by belt blockage. It can provide stable feeding and screening effects under high-speed cigarette making lines, improve production efficiency and reduce quality risks. Brief Description of the Drawings

[0015] The drawings described herein are provided to further understand the present utility model and form a part of this application. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the second star roller assembly of the tobacco leaf sundry screening and removing device provided by the embodiment of the present utility model.

[0017] Figure 2 It is a front view structural schematic diagram of the second star roller assembly of the tobacco leaf sundry screening and removing device provided by the embodiment of the present utility model.

[0018] Figure 3 It is a side view structural schematic diagram of the second star roller assembly of the tobacco leaf sundry screening and removing device provided by the embodiment of the present utility model.

[0019] Figure 4 It is a top view structural schematic diagram of the second star roller assembly of the tobacco leaf sundry screening and removing device provided by the embodiment of the present utility model.

[0020] Reference Numerals:

[0021] 1. Second star roller assembly; 2. Second driving device;

[0022] 11. Rotating shaft; 12. Blade. Detailed Description of the Embodiments

[0023] The following further elaborates on the technical solutions provided by the present utility model in conjunction with Figures 1 to 4 The description of the exemplary embodiments is merely illustrative and in no way limits the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments introduced here. These embodiments are provided to make the present disclosure thorough and complete and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that: Unless otherwise specifically stated, the relative arrangements of components and steps, the components of materials, numerical expressions and values set forth in these embodiments should be construed as merely exemplary and not as limitations.

[0024] The "first", "second" and similar terms used in the present disclosure do not denote any order, quantity or importance, but are merely used to distinguish different parts. Words such as "including" or "comprising" mean that the elements before the word cover the elements listed after the word and do not exclude the possibility of also covering other elements.

[0025] In the present disclosure, when it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device. When it is described that a specific device is connected to other devices, the specific device may be directly connected to other devices without an intermediate device, or may not be directly connected to other devices but have an intermediate device.

[0026] All terms used in the present disclosure, including technical terms or scientific terms, have the same meanings as understood by those of ordinary skill in the art to which the present disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, for example, should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such herein.

[0027] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technologies, methods, and devices are regarded as part of the specification.

[0028] The dimensions of the various parts shown in the drawings are not drawn in accordance with actual proportional relationships. The same reference numerals are attached to common structural elements or structural elements of the same type in the respective drawings, and repeated descriptions thereof are appropriately omitted.

[0029] The inventor has found through research that the degree of automation in cigarette pack production is getting higher and higher, and the processes that require manual assistance are getting fewer and fewer. In order to reduce the sundries and mildewed tobacco leaves mixed in the tobacco leaves, it is necessary to screen the tobacco leaves. However, the current screening equipment has low screening efficiency, and a large amount of agglomerated materials are still conveyed to the rejection station after screening. In order to reduce the loss and waste of materials, a large number of workers need to be arranged to screen at the rejection station. The manual screening efficiency is low and the cost is high. For this reason, the embodiments of the present invention provide a technical solution that can improve the screening efficiency.

[0030] See Figure 1 , the embodiments of the present invention provide a device for screening and removing sundries from tobacco leaves, including a frame 3 (not shown in the figure), a first star roller assembly (not shown in the figure), a second star roller assembly 1, and a conveyor belt (not shown in the figure). The first star roller assembly is rotatably mounted on the frame 3. The second star roller assembly 1 is rotatably mounted on the frame 3; the second star roller assembly 1 is located downstream of the first star roller assembly to receive and convey the materials rejected by the first star roller assembly. The installation position of the conveyor belt is lower than that of the first star roller assembly and the second star roller assembly 1, and the conveyor belt is configured to receive the materials falling from the first star roller assembly and the second star roller assembly 1.

[0031] The frame 3 is fixed to the ground and other fixtures, providing an installation foundation for the first star roller assembly, the second star roller assembly 1, and the conveyor belt, and the frame 3 bears these components.

[0032] The first star roller assembly is used to grab materials from the hopper and convey the materials along its own length direction. During the process of conveying along the first star roller assembly, the loose materials fall through the gaps of the first star roller assembly to the lower part of the first star roller assembly. The lower part of the first star roller assembly is the conveyor belt, so the materials falling through the gaps of the first star roller assembly will fall onto the conveyor belt and then be conveyed to the downstream equipment along the conveyor belt for subsequent production. Some materials are in clusters. Even when conveyed along the first star roller assembly, during the entire movement of the materials, there are still clustered materials that cannot fall onto the conveyor belt through the gaps of the first star roller assembly. Then, after these materials move to the downstream end of the first star roller assembly, they will be moved onto the second star roller assembly 1. The second star roller assembly 1 can also play a role in loosening the materials, and the second star roller assembly 1 is also located above the conveyor belt. The materials loosened by the second star roller assembly 1 will fall onto the conveyor belt through the gaps of the second star roller assembly 1. If there are still clustered materials after the clustered materials are loosened by the second star roller assembly 1, then these clustered materials will be conveyed to the rejection station later and be manually screened or directly rejected at the rejection station.

[0033] In some embodiments, the tobacco leaf and foreign matter screening and rejection device further includes a first driving device (not shown in the figure), and the first driving device is drivingly connected to the first star roller assembly to control the running speed of the first star roller assembly. Refer to Figures 1 to 4 , the first star roller assembly includes a rotating shaft 11 and blades 12. The rotating shaft 11 is rotatably installed on the frame 3; the blades 12 are installed on the surface of the rotating shaft 11 and are integral with or fixedly connected to the rotating shaft 11.

[0034] The first driving device can be driven by components such as a motor and a chain. By the motor, parameters such as the rotation direction, rotation speed, and running frequency of the rotating shaft 11 can be controlled to achieve better screening efficiency and screening effect of the first star roller assembly. With the above structure of the first star roller assembly, there is no area prone to material accumulation, and cleaning is convenient and efficient.

[0035] In some embodiments, the tobacco leaf and foreign matter screening and rejection device further includes a second driving device 2, and the second driving device 2 is drivingly connected to the second star roller assembly 1 to control the running speed of the second star roller assembly 1. Refer to Figures 1 to 4, the second star roller assembly 1 also includes a rotating shaft 11 and blades 12. The rotating shaft 11 is rotatably mounted on the frame 3; the blades 12 are mounted on the surface of the rotating shaft 11 and are integral with or fixedly connected to the rotating shaft 11. The second driving device 2 can be driven by components such as a motor and a chain. The rotation direction, rotation speed, operating frequency and other parameters of the rotating shaft 11 can be controlled by the motor to achieve better screening efficiency and screening effect of the second star roller assembly 1. With the above structure, there is no area prone to material accumulation in the second star roller assembly 1, and it is convenient and efficient to clean.

[0036] The structures of the first star roller assembly and the second star roller assembly 1 are the same. A plurality of blades 12 are mounted on the surface of each rotating shaft 11, and the respective blades 12 are arranged dispersedly along the central axis of the rotating shaft 11. By controlling the density of the arrangement of the blades 12, the minimum distance between the blades 12 on two adjacent rotating shafts 11 can be controlled, and thus the size of the material that can pass through can be controlled, improving the screening efficiency and the uniformity of the material supply on the conveyor belt.

[0037] In some embodiments, the first star roller assembly and the second star roller assembly 1 each include a plurality of rotating shafts 11, and the central axes of the plurality of rotating shafts 11 are in the same plane. The minimum distance between the blades 12 mounted on two adjacent rotating shafts 11 is greater than 0, and the material is configured to allow loose material to fall through the gap between the blades 12 mounted on two adjacent rotating shafts 11.

[0038] With the above structure, the first star roller assembly and the second star roller assembly 1 enable the cut tobacco to be effectively grabbed and conveyed, reduce the phenomenon of uneven material supply, and improve the screening efficiency and conveying uniformity.

[0039] In some embodiments, the tobacco leaf debris screening and removing device further includes a material transfer device (not shown in the figure). The material transfer device is mounted on the frame 3 and is located near the first star roller assembly; the material transfer device is configured to convey the agglomerated material screened out by the first star roller assembly to the second star roller assembly 1. The material transfer device moves the agglomerated material output by the first star roller assembly onto the second star roller assembly 1. These agglomerated materials are secondarily screened and removed via the second star roller assembly 1. Finally, the number of the agglomerated materials output via the second star roller assembly 1 is greatly reduced. Therefore, the tobacco leaf debris screening and removing device improves the material screening efficiency and reduces the workload of subsequent manual screening.

[0040] In some embodiments, the tobacco leaf debris screening and removing device further includes a removal bucket (not shown in the figure). The removal bucket is placed downstream of the second star roller assembly 1 to receive the agglomerated material conveyed by the second star roller assembly 1.

[0041] The tobacco leaf debris screening and removing device provided by the embodiment of the present utility model can be used in the silk-making production lines of threshing and redrying tobacco leaves, cut tobacco and stem tobacco for primary processing of tobacco leaves, for removing debris and mildewed leaves 12, and can make the material be loosely laid on the conveyor belt. The material loosened by the tobacco leaf debris screening and removing device can be conveniently used to remove debris by means of density and color comparison.

[0042] The embodiment of the present utility model also provides a tobacco leaf debris screening and removing system, including the tobacco leaf debris screening and removing device provided by any technical solution of the present utility model.

[0043] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation on the protection content of the present utility model. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0044] In the description of the present utility model, under feasible circumstances, each technical feature can be combined with other technical features.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A tobacco leaf debris screening and removal device, characterized in that: include: Rack (3); A first star-shaped roller assembly, rotatably mounted on the frame (3); a second star-shaped roller assembly (1) rotatably mounted on the frame (3); the second star-shaped roller assembly (1) is located downstream of the first star-shaped roller assembly to receive and convey materials rejected by the first star-shaped roller assembly; as well as A conveyor belt, wherein the installation position of the conveyor belt is lower than the first star-shaped roller assembly and the second star-shaped roller assembly (1), and the conveyor belt is configured to receive materials dropped from the first star-shaped roller assembly and the second star-shaped roller assembly (1).

2. The tobacco debris screening and removal device according to claim 1 is characterized in that: Also includes: The first driving device is drivingly connected to the first star-shaped roller assembly to control the running speed of the first star-shaped roller assembly.

3. The tobacco debris screening and removal device according to claim 1 is characterized in that: Also includes: A second driving device (2) is drivingly connected to the second star-shaped roller assembly (1) to control the running speed of the second star-shaped roller assembly (1).

4. The tobacco debris screening and removal device according to claim 1 is characterized in that: The first star-shaped roller assembly and the second star-shaped roller assembly (1) each respectively comprise: A rotating shaft (11) rotatably mounted on the frame (3); and The blade (12) is mounted on the surface of the rotating shaft (11), and is integral with or fixedly connected to the rotating shaft (11).

5. The tobacco debris screening and removal device according to claim 4 is characterized in that: A plurality of blades (12) are mounted on the surface of each rotating shaft (11), and each blade (12) is dispersedly arranged along the central axis of the rotating shaft (11).

6. The tobacco debris screening and removal device according to claim 4 is characterized in that: The first star-shaped roller assembly and the second star-shaped roller assembly (1) each respectively comprise a plurality of rotating shafts (11), and the minimum distance between the blades (12) on which two adjacent rotating shafts (11) are mounted is greater than 0, and the material is constructed to allow loose material to fall through the gap between the blades (12) on which two adjacent rotating shafts (11) are mounted.

7. The tobacco debris screening and removal device according to claim 1 is characterized in that: Also includes: A material transfer device, mounted on the frame (3) and located near the first star-shaped roller assembly; The material transfer device is configured to transport the agglomerated material screened out by the first star-shaped roller assembly to the second star-shaped roller assembly (1).

8. The tobacco debris screening and removal device according to claim 1 is characterized in that: Also includes: The rejecting barrel is placed downstream of the second star-shaped roller assembly (1) to receive the agglomerated material conveyed by the second star-shaped roller assembly (1).

9. A tobacco leaf debris screening and removal system, characterized in that: It comprises the tobacco leaf debris screening and removing device as described in any one of claims 1 to 8.

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