External tobacco pre-separation device and tobacco production line

Abstract

The application relates to the tobacco stem and shred separation technical field, in particular to an external type tobacco shred pre-separation device and a tobacco shred production line. The pre-separation device comprises a support, a feeding air duct, a first discharge channel, a second discharge channel and a scattering roller. The feeding air duct is fixedly arranged on the support and has a feeding end and a blowing end at two ends, and a discharge channel connecting position is arranged between the feeding end and the blowing end; the first discharge channel and the second discharge channel are connected at the discharge channel connecting position; the inlet of the first discharge channel and the inlet of the second discharge channel are sequentially arranged along the gravity direction; the external type tobacco shred pre-separation device is provided with the scattering roller, tobacco leaves enter the feeding end first pass through the scattering roller, the scattering roller can scatter the tobacco leaves in a group, the tobacco leaves are more loose, the problem that the tobacco leaves are in a group is solved, good conditions are created for subsequent efficient tobacco shred and stem separation, the separation efficiency is effectively improved, and the tobacco quality is improved.

Description

Technical Field

[0001] This application relates to the field of tobacco stem separation technology, and more specifically, to an external tobacco pre-separation device and a tobacco production line. Background Technology

[0002] In the tobacco processing industry, tobacco leaves are typically first cut into shreds, and then the shredded tobacco leaves are separated into shredded tobacco and stems. The stem-separation device is a key piece of equipment for separating shredded tobacco from stems within the tobacco leaves. With the increasing automation of cigarette production, the requirements for tobacco quality are becoming increasingly stringent. Current technologies neglect the physical state of the tobacco shreds before they enter the cigarette rolling machine. Especially during the conveying process within the tobacco processing equipment, airflow or mechanical compression can easily cause the tobacco leaves to clump together. When these tobacco leaves clump together, it affects the separation efficiency of shredded tobacco and stems, thereby reducing the quality of the cigarette product. Although various methods for improving tobacco quality exist in existing technologies, none of these devices currently address the problem of tobacco clumping at the cigarette rolling machine inlet. Utility Model Content

[0003] The purpose of this application is to provide an external tobacco pre-separation device and a tobacco production line, which can break up clumps of tobacco and improve sorting efficiency.

[0004] To achieve the above objectives, in a first aspect, this utility model provides an external tobacco pre-separation device, comprising: support; The feeding air duct is fixedly installed on the bracket and has a feeding end and a blowing end at its two ends. The feeding end is used to receive materials, and the blowing end is used to blow air towards the feeding end. A discharge channel connection position is provided between the feeding end and the blowing end. The first discharge channel is connected at the discharge channel connection position; The second discharge channel is connected at the discharge channel connection position, and the inlet of the first discharge channel and the inlet of the second discharge channel are distributed sequentially along the direction of gravity. Dispersing rollers are installed at the feed duct. The dispersing rollers and the discharge channel are connected sequentially along the material movement path. The material entering the feed duct from the feed end is dispersed by the dispersing rollers and then moves to the discharge channel connection. When the blower blows air, the material with a density less than or equal to a first preset density is blown into the first discharge channel, and the material with a density greater than the first preset density falls into the second discharge channel.

[0005] In an optional implementation, the first discharge channel is configured as a zigzag shape.

[0006] In an optional embodiment, the blower end is configured as a vortex-shaped shell, and a fan is disposed inside the vortex-shaped shell.

[0007] In an optional embodiment, a feeding roller is also included, which is rotatably installed in the feed duct. The dispersing roller and the feeding roller are distributed sequentially along the material movement path. The feeding roller is used to transport the material to the discharge channel connection position.

[0008] In an optional embodiment, an inclined baffle is provided at the feeding roller, the inclined baffle being used to guide the material in the feeding duct to slide toward the feeding roller.

[0009] In an optional embodiment, a first drive motor and a second drive motor are also included, wherein the first drive motor is used to drive the dispersing roller to rotate, and the second drive motor is used to drive the feeding roller to rotate.

[0010] In an optional embodiment, a vibrating drive belt is also included, located at the feed end for conveying the material into the feed end.

[0011] In an optional embodiment, a belt conveyor is also included, located at the outlet of the second discharge channel for transporting material discharged from the second discharge channel.

[0012] In optional implementations, it further includes a vision control platform, a first image acquisition module, and a second image acquisition module; The vision control platform is electrically connected to the first image acquisition module and the second image acquisition module. The first image acquisition module is used to acquire the characteristics of the material entering the feed duct and send them to the vision control platform. The second image acquisition module is used to acquire the characteristics of the material discharged from the second discharge channel and send them to the vision control platform. The vision control platform adjusts the blowing intensity of the blower end based on the material characteristics acquired by the first image acquisition module and the second image acquisition module.

[0013] Secondly, this utility model provides a tobacco production line, including a cigarette rolling machine and an external tobacco pre-separation device as described in any of the foregoing embodiments.

[0014] The external tobacco pre-separation device of this application is equipped with a dispersing roller. After the tobacco leaves enter the feeding end, they first pass through the dispersing roller. The dispersing roller can break up the clumps of tobacco leaves, making the tobacco leaves more loose, solving the problem of tobacco leaves clumping, creating good conditions for subsequent efficient separation of tobacco shreds and stems, effectively improving the separation efficiency, and thus improving the quality of tobacco.

[0015] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A cross-sectional schematic diagram from one perspective of one embodiment of the external tobacco pre-separation device provided in this application; Figure 2 This is a two-view structural schematic diagram of one embodiment of the tobacco production line provided in this application.

[0018] icon: 100-Standard; 200 - Feed duct; 210 - Feed end; 220 - Blower end; 230 - Discharge channel connection; 240 - Blower; 250 - First discharge channel; 260 - Second discharge channel; 270 - Air pressure balance port; 300 - Dispersing roller; 310 - Feeding roller; 320 - Inclined baffle; 330 - First drive motor; 340 - Second drive motor; 400 - Vibration drive belt; 410 - Belt conveyor; 500 - Vision control platform; 510 - First image acquisition module; 520 - Second image acquisition module. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0022] like Figure 1 As shown, in a first aspect, embodiments of this application provide an external tobacco pre-separation device, including a support 100, a feeding air duct 200, a first discharge channel 250, a second discharge channel 260, and a dispersing roller 300.

[0023] The bracket 100 is fixedly installed on the ground or other fixed platform.

[0024] The feed duct 200 is fixedly mounted on the bracket 100, and the fixing method is, for example, welding, snap-fitting or bolt connection.

[0025] The feed duct 200 has two ends, namely the feed end 210 and the blower end 220.

[0026] The feed end 210 is used to receive materials. External materials enter the feed duct 200 through the feed end 210. The materials are, for example, tobacco leaves cut into shreds. The shredded tobacco leaves (hereinafter referred to as tobacco leaves) contain tobacco shreds and stems with a density greater than that of tobacco shreds. When the stems initially enter the feed end 210, the tobacco shreds and stems are in a mixed state. Of course, the external tobacco shred pre-separation device provided in this application can also be applied to other fields, such as for separating yarns of different densities.

[0027] The blower end 220 is used to blow air towards the feed end 210. The blower end 220 can blow air onto the material to promote the separation of tobacco and stems.

[0028] A discharge channel connection position 230 is provided between the feed end 210 and the blower end 220.

[0029] The first discharge channel 250 is connected at the discharge channel connection position 230.

[0030] The second discharge channel 260 is connected at the discharge channel connection position 230, and the inlet of the first discharge channel 250 and the inlet of the second discharge channel 260 are distributed sequentially along the direction of gravity.

[0031] The dispersing roller 300 is installed at the feed duct 200 and can rotate relative to the feed duct 200.

[0032] For example, such as Figure 1 As shown, the dispersing roller 300 can also be configured as a pair of rollers.

[0033] For example, the outer wall of the dispersing roller 300 is provided with a needle-like structure.

[0034] For example, the dispersing roller 300 can be manually driven to rotate by an operator or driven to rotate by a motor.

[0035] The dispersing roller 300 and the discharge channel connection position 230 are distributed sequentially along the material movement path. After the filament enters the feed end 210, it first passes through the dispersing roller 300 and then through the discharge channel connection position 230.

[0036] During use, the material entering the feed duct 200 from the feed end 210 is dispersed by the dispersing roller 300 and then moved to the discharge channel connection position 230. The dispersing roller 300 makes the tobacco leaves more loose, facilitating the rapid airflow at the blower end 220 to blow into the tobacco leaves, thus facilitating the separation of tobacco shreds and stems. When the blower end 220 blows air, materials with a density less than or equal to the first preset density (such as tobacco shreds) are blown into the first discharge channel 250, while materials with a density greater than the first preset density (such as stems) fall into the second discharge channel 260.

[0037] The first preset density can be set according to the actual needs of production. For example, if the proportion of stems in tobacco leaves is large, the first preset density will be larger; if the proportion of stems in tobacco leaves is small, the first preset density will be smaller.

[0038] Existing stem-separation devices neglect the physical state of tobacco shreds before entering the cigarette machine. During transport, the tobacco shreds are easily clumped together by airflow or mechanical compression, affecting the separation efficiency of tobacco shreds and stems. In contrast, the external tobacco pre-separation device of this application is equipped with a dispersing roller 300. After entering the feed end 210, the tobacco leaves first pass through the dispersing roller 300. The dispersing roller 300 can break up clumps of tobacco leaves, making them more loose and solving the problem of tobacco leaf clumping. This creates favorable conditions for subsequent efficient separation of tobacco shreds and stems, effectively improving separation efficiency and thus enhancing tobacco quality.

[0039] In this application, the device is configured at both ends of the feeding duct 200. The feeding end 210 is used to receive materials, and the blowing end 220 is used to blow air towards the feeding end 210. After the materials are dispersed by the dispersing roller 300, they move to the discharge channel connection position 230. The rapidly flowing airflow at the blowing end 220 can blow into the loose tobacco leaves. Utilizing the different densities of tobacco shreds and stems, materials with a density less than or equal to a first preset density (such as tobacco shreds) are blown into the first discharge channel 250, while materials with a density greater than the first preset density (such as stems) fall into the second discharge channel 260, thus achieving effective separation of tobacco shreds and stems.

[0040] like Figure 1 As shown, in one embodiment, the first discharge channel 250 is configured as a zigzag shape.

[0041] During use, under the influence of the airflow at the blower end 220, some stems will be mixed with the tobacco and enter the first discharge channel 250 with the airflow. The zigzag-shaped first discharge channel 250 allows the tobacco with stems to collide with the inner wall of the channel. Utilizing the difference in density between stems and tobacco, this collision further promotes the separation of the entrained stems from the tobacco, effectively reducing the content of stems entering the first discharge channel 250 (which should mainly collect tobacco), improving the purity of the tobacco, and also improving the overall sorting purity of stems and tobacco.

[0042] The zigzag-shaped channel facilitates a secondary separation of stems from tobacco. The separated stems then fall from the first discharge channel 250 into the second discharge channel 260, reducing stem accumulation and miscollection in the first discharge channel 250. This improves the situation where stem contamination could negatively impact subsequent processing or product quality, allowing tobacco and stems to enter their respective discharge channels more precisely. This further optimizes the sorting efficiency of stems and tobacco, making the entire sorting process more efficient and smooth.

[0043] like Figure 1 As shown, in one embodiment, an air pressure balance port 270 is provided at the outlet of the first discharge channel 250. The air pressure balance port 270 can reduce the phenomenon of gas flowing back into the feed air duct 200 in the first discharge channel 250. In order to prevent tobacco from being discharged from the air pressure balance port 270, a filter screen is also provided at the air pressure balance port 270. The filter screen is breathable but can block the tobacco from being discharged from the air pressure balance port 270.

[0044] To improve the blowing efficiency of the blower end 220, such as Figure 1 As shown, in one embodiment, the blower end 220 is configured as a vortex-shaped housing, and a fan 240 is disposed inside the vortex-shaped housing.

[0045] For example, the air outlet of the vortex housing of the blower end 220 is arranged obliquely upward.

[0046] The vortex-shaped casing effectively guides and rectifies the airflow. When the blower 240 is running, the vortex structure allows the airflow to follow a specific spiral path, reducing turbulence and energy loss during the flow process. This enables the airflow to be blown out more smoothly and efficiently from the blower end 220, thereby improving the blower efficiency.

[0047] like Figure 1 As shown, in one embodiment, the external tobacco pre-separation device further includes a feeding roller 310, which is rotatably installed in the feed duct 200. The dispersing roller 300 and the feeding roller 310 are distributed sequentially along the material movement path. The tobacco leaves first pass through the dispersing roller 300 and then through the feeding roller 310. The feeding roller 310 is used to transport the material to the discharge channel connection position 230.

[0048] For example, the feed roller 310 can be manually driven to rotate by an operator.

[0049] After being processed by the dispersing roller 300, the tobacco leaves become more loose. Then, they are conveyed by the feeding roller 310, which reduces blockages and jamming during transport. The feeding roller 310, through the friction and pushing force generated by its rotation, stably transports the loose tobacco leaves to the discharge channel connection position 230, ensuring the continuity and stability of material transport and improving the overall efficiency of the pre-separation device.

[0050] like Figure 1 As shown, in one embodiment, an inclined baffle 320 is provided at the feeding roller 310.

[0051] The inclined baffle 320 is used to guide the material in the feed duct 200 to slide towards the feed roller 310.

[0052] For example, the inclined baffle 320 is fixedly installed on the inner wall of the feed duct 200, and the fixing method is, for example, welding, snap-fitting or bolt connection.

[0053] For example, the inclined baffle 320 is inclined relative to the vertical direction.

[0054] The inclined baffle 320 guides the material in the feed duct 200. When material flows within the duct, its movement direction may be somewhat dispersed due to airflow or its own gravity. The inclined baffle 320 guides the material to the feed roller 310, allowing it to reach the feed roller 310 more concentratedly and orderly, preventing the material from scattering throughout the duct or deviating from the predetermined conveying path, thus improving the accuracy and efficiency of material conveying.

[0055] In one embodiment, the tilt angle of the inclined baffle 320 is adjustable. For example, a bolt is fixedly connected to the end of the inclined baffle 320, and a bolt through hole is provided on the feed duct 200. The bolt passes through the bolt through hole to extend outside the feed duct 200. Rotation of the bolt causes the inclined baffle 320 to rotate, thereby adjusting the tilt angle of the inclined baffle 320. A locking nut is provided on the bolt; tightening the locking nut locks the bolt and the inclined baffle 320.

[0056] To improve the level of automation, such as Figure 2 As shown, in one embodiment, the external tobacco pre-separation device further includes a first drive motor 330 and a second drive motor 340. The first drive motor 330 is used to drive the dispersing roller 300 to rotate, and the second drive motor 340 is used to drive the feeding roller 310 to rotate.

[0057] For example, the first drive motor 330 and the second drive motor 340 include, but are not limited to, DC motors, AC motors, brushless DC motors, stepper motors, servo motors, or switched reluctance motors.

[0058] like Figure 1 As shown, in one embodiment, the external tobacco pre-separation device further includes a vibrating conveyor belt 400 located at the feed end 210 for conveying materials into the feed end 210. The vibrating conveyor belt 400 vibrates the materials during the conveying process.

[0059] During material conveying, due to the inherent characteristics of the materials, such as irregular shape, high humidity, or caking, they can easily accumulate at the feed end 210, causing blockages and affecting the normal operation of the entire pre-separation device. The vibrating conveyor belt 400 vibrates the materials while conveying them. This vibration breaks down the adhesion and friction between the materials, keeping them loose and preventing accumulation at the feed end 210. This ensures the materials can smoothly enter the feed duct 200, improving the continuity and stability of material conveying.

[0060] Vibration can make the material more evenly distributed on the conveyor belt. In traditional conveying methods, material may accumulate locally or be unevenly distributed on the conveyor belt, resulting in an unstable amount of material entering the feed duct 200. However, the vibration of the vibrating conveyor belt 400 causes the material to continuously tumble and bounce, thus spreading the material evenly on the conveyor belt and ensuring a relatively stable amount of material delivered to the feed end 210 per unit time, providing favorable conditions for the subsequent pre-separation process.

[0061] like Figure 1 and Figure 2As shown, in one embodiment, the external tobacco pre-separation device further includes a belt conveyor 410 located at the outlet of the second discharge channel 260 for transporting the material discharged from the second discharge channel 260 to a designated location. The designated location may be, for example, a collection box or a hopper.

[0062] like Figure 1 and Figure 2 As shown, in one embodiment, the external tobacco pre-separation device further includes a vision control platform 500, a first image acquisition module 510, and a second image acquisition module 520.

[0063] The vision control platform 500 is electrically connected to the first image acquisition module 510 and the second image acquisition module 520.

[0064] For example, the first image acquisition module 510 is fixedly installed on the vibration transmission belt 400 or at the inlet of the feed duct 200, and the fixing method is, for example, adhesive, snap-fit ​​or bolt fixing.

[0065] The first image acquisition module 510 is used to acquire the characteristics of the material entering the feed duct 200 and send them to the vision control platform 500. The characteristics of the material are, for example, the ratio of tobacco shreds and stems in the tobacco leaf, humidity or density, etc.

[0066] For example, the second image acquisition module 520 is disposed at the outlet of the second discharge channel 260 or on the belt conveyor 410, and the fixing method is, for example, adhesive, snap-fit ​​or bolt fixing.

[0067] The second image acquisition module 520 is used to acquire the features of the material discharged from the second discharge channel 260 and send them to the vision control platform 500. The material discharged from the second discharge channel 260 is basically filaments.

[0068] The vision control platform 500 adjusts the blowing intensity of the blower end 220 based on the material characteristics acquired by the first image acquisition module 510 and the second image acquisition module 520.

[0069] For example, the first image acquisition module 510 acquires the initial ratio of stems to shredded tobacco in the tobacco leaves entering the feed duct 200, and then the second image acquisition module 520 acquires the ratio of stems. The vision control platform 500 adjusts the power of the blower 240 at the blower end 220 by comparing the ratio of stems acquired by the first image acquisition module 510 and the second image acquisition module 520. For example, if the ratio of stems to shredded tobacco in the tobacco leaves acquired by the first image acquisition module 510 is 1:10, and the ratio of stems to shredded tobacco acquired by the second image acquisition module 520 is 1:1, it indicates that there is too much shredded tobacco. Discharged from the second discharge channel 260, the vision control platform 500 will increase the power of the fan 240. For example, the first image acquisition module 510 obtains a ratio of stems to tobacco shreds of 1:10, while the second image acquisition module 520 obtains a ratio of stems to tobacco shreds of 5:1. The high proportion of stems may cause more stems to be mixed in with the tobacco shreds at the first discharge channel 250. Therefore, the vision control platform 500 needs to reduce the power of the fan 240 to allow more stems to fall into the second discharge channel 260, thereby reducing the proportion of stems mixed in with the tobacco shreds at the first discharge channel 250.

[0070] The higher the fan power, the higher the initial preset density; the lower the fan power, the lower the initial preset density.

[0071] For example, the first image acquisition module 510 and the second image acquisition module 520 are, for example, high-speed cameras, industrial cameras (CCD / CMOS) or multispectral / hyperspectral cameras.

[0072] For example, the vision control platform 500 is provided with a processor and a memory, and the memory is provided with computer programs that can run on the processor, such as those used to implement the above-described working process of the vision control platform 500.

[0073] In some embodiments, the processor may be an electronic control unit (ECU), a central processing unit (CPU), a controller, a microcontroller, a microprocessor, or other data processing chip, used to run program code stored in memory or process data.

[0074] The memory includes at least one type of readable storage medium, such as flash memory, hard disk, multimedia card, card-type memory (e.g., SD or DX memory), magnetic storage, magnetic disk, optical disk, etc. In some embodiments, the memory can be an internal storage unit of a computer device, such as the hard disk of that computer device. In other embodiments, the memory can be an external storage device, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. Furthermore, the memory can include both internal storage units and external storage devices of the computer device. The memory can be used not only to store application software and various types of data installed on the computer device, but also to temporarily store data that has been output or will be output.

[0075] Secondly, embodiments of this application also provide a tobacco production line, including a cigarette rolling machine and an external tobacco pre-separation device as described in any of the above embodiments.

[0076] During use, tobacco leaves are introduced from the cigarette rolling machine into the feed duct 200 via a vibrating transmission belt 400.

[0077] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0078] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An external tobacco pre-separation device, characterized in that, include: Bracket (100); A feeding duct (200) is fixedly mounted on the bracket (100) with a feeding end (210) and a blower end (220) at its two ends. The feeding end (210) is used to receive materials, and the blower end (220) is used to blow air towards the feeding end (210). A discharge channel connection position (230) is provided between the feeding end (210) and the blower end (220). The first discharge channel (250) is connected at the discharge channel connection position (230); The second discharge channel (260) is connected at the discharge channel connection position (230), and the inlet of the first discharge channel (250) and the inlet of the second discharge channel (260) are distributed sequentially along the direction of gravity. Dispersing roller (300) is installed at the feed duct (200). The dispersing roller (300) and the discharge channel connection position (230) are distributed sequentially along the material movement path. The material entering the feed duct (200) from the feed end (210) is dispersed by the dispersing roller (300) and then moves to the discharge channel connection position (230). When the blower end (220) blows air, the material with a density less than or equal to the first preset density is blown into the first discharge channel (250), and the material with a density greater than the first preset density falls into the second discharge channel (260).

2. The external tobacco pre-separation device according to claim 1, characterized in that, The first discharge channel (250) is configured as a broken line.

3. The external tobacco pre-separation device according to claim 1, characterized in that, The blower end (220) is configured as a vortex-shaped shell, and a blower (240) is installed inside the vortex-shaped shell.

4. The external tobacco pre-separation device according to claim 1, characterized in that, It also includes a feeding roller (310), which is rotatably installed in the feed duct (200). The dispersing roller (300) and the feeding roller (310) are distributed sequentially along the material movement path. The feeding roller (310) is used to transport the material to the discharge channel connection position (230).

5. The external tobacco pre-separation device according to claim 4, characterized in that, An inclined baffle (320) is provided at the feeding roller (310), and the inclined baffle (320) is used to guide the material in the feeding duct (200) to slide towards the feeding roller (310).

6. The external tobacco pre-separation device according to claim 5, characterized in that, It also includes a first drive motor (330) and a second drive motor (340), the first drive motor (330) being used to drive the dispersing roller (300) to rotate, and the second drive motor (340) being used to drive the feeding roller (310) to rotate.

7. The external tobacco pre-separation device according to claim 1, characterized in that, It also includes a vibrating drive belt (400) located at the feed end (210) for conveying the material into the feed end (210).

8. The external tobacco pre-separation device according to claim 1, characterized in that, It also includes a belt conveyor (410) located at the outlet of the second discharge channel (260) for transporting materials discharged from the second discharge channel (260).

9. The external tobacco pre-separation device according to claim 1, characterized in that, It also includes a vision control platform (500), a first image acquisition module (510), and a second image acquisition module (520); The vision control platform (500) is electrically connected to the first image acquisition module (510) and the second image acquisition module (520). The first image acquisition module (510) is used to acquire the characteristics of the material entering the feed duct (200) and send them to the vision control platform (500). The second image acquisition module (520) is used to acquire the characteristics of the material discharged from the second discharge channel (260) and send them to the vision control platform (500). The vision control platform (500) adjusts the blowing intensity of the blower end (220) based on the material characteristics acquired by the first image acquisition module (510) and the second image acquisition module (520).

10. A tobacco shred production line, characterized in that, Includes a cigarette rolling machine and an external tobacco pre-separation device as described in any one of claims 1 to 9.

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