A tobacco sheet branch vein stem removing line

Abstract

This utility model discloses a tobacco leaf branch and stem removal line, including an incoming tobacco leaf conveyor belt, a collecting tobacco leaf conveyor belt, and a branch and stem removal line. The end of the incoming tobacco leaf conveyor belt is equipped with a switching mechanism for transferring incoming tobacco leaves to either the collecting tobacco leaf conveyor belt or the branch and stem removal line. The branch and stem removal line is equipped with a spreading mechanism for thinning the tobacco leaves. An air separator is located at the end of the branch and stem removal line, with a discharge port at its bottom, positioned directly above the tobacco leaf conveyor belt containing stems. A side box is located at the top of the air separator, and a stemless tobacco leaf conveying pipe is located on one side of the side box, with its bottom end positioned above the collecting tobacco leaf conveyor belt. The purpose of this utility model is to provide a tobacco leaf branch and stem removal line that allows for autonomous selection of whether to activate the line based on the incoming material, saving factory space and facilitating the processing and conveying process.

Description

Technical Field

[0001] This utility model relates to the field of conveying technology, specifically to a tobacco leaf branch vein removal line. Background Technology

[0002] In the re-drying and processing of tobacco leaves, the removal of veins and stems is a crucial step, vital to the quality of cigarette production. This step primarily removes the veins and stems from the re-dried tobacco leaves, reducing their content in the finished product. With the continuous growth in the production and demand for medium and slim cigarettes, cigarette manufacturers are increasingly stringent in their requirements regarding the vein and stem content in the re-dried leaves. Excessive vein and stem content in the finished cigarette can easily puncture the cigarette, causing leakage, or create breaks at the combustion port, thus affecting the cigarette's combustibility, stability, and appearance, and even ruining the overall smoking experience. In existing processing lines, stemless tobacco sheets are directly fed into the tobacco sheet collection conveyor belt, while tobacco sheets with stems need to be removed before being fed into the collection conveyor belt. This requires setting at least two branches on the tobacco sheet collection conveyor belt, one branch for conveying stemless tobacco sheets and the other branch for conveying tobacco sheets with stems. During processing, the feeding is carried out on different branches according to the stem content of the incoming material. This is not only cumbersome, but also occupies too much space in the factory. In order to solve this technical problem, this utility model provides a tobacco sheet branch stem removal line. Utility Model Content

[0003] The purpose of this utility model is to provide a branch vein and stem rejection line for tobacco sheets, so that the line can be selected independently based on the incoming material situation, saving factory space and facilitating the processing and conveying process.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A branch and stem rejection line for tobacco flakes includes an incoming tobacco flake conveyor belt, a collecting tobacco flake conveyor belt, and a branch and stem rejection line. The end of the incoming tobacco flake conveyor belt is equipped with a switching mechanism for switching the incoming tobacco flakes to the collecting tobacco flake conveyor belt or the branch and stem rejection line. The branch and stem rejection line is equipped with a spreading mechanism for thinning the tobacco flakes. The end of the branch and stem rejection line is equipped with an air classifier box. The bottom of the air classifier box is equipped with a discharge port, which is located directly above the tobacco flake conveyor belt containing stems. The top of the air classifier box is equipped with a side box, and one side of the side box is equipped with a stemless tobacco flake conveying pipe. The bottom end of the stemless tobacco flake conveying pipe is located above the collecting tobacco flake conveyor belt.

[0006] Furthermore, the switching mechanism includes a cylinder and a hopper. The cylinder is located at the bottom of the incoming tobacco sheet conveyor belt, and the cylinder's push-out end is connected to the hopper.

[0007] Furthermore, in the initial state, the hopper is located above the branch vein rejection line, and in the extended state, the hopper is located above the collecting tobacco sheet conveyor belt.

[0008] Furthermore, the material spreading mechanism includes a U-shaped frame, a screw, and a spreading plate. The U-shaped frame is disposed on the side wall of the branch vein removal line, and an internal thread is provided in the middle of the U-shaped frame and threadedly connected to the screw. The spreading plate is rotatably disposed at the bottom end of the screw.

[0009] Furthermore, the air separator is provided with an upper air pipe and a lower air pipe, both of which have multiple air holes. The air holes of the upper air pipe face the side chamber, and the air holes of the lower air pipe face upward. One end of the upper air pipe and the lower air pipe are connected to an air supply pipe, which is connected to a fan.

[0010] Furthermore, the air separator is equipped with a movable fan blade that rotates inside. The shaft end of the movable fan blade is connected to a rotating handle, which is located on the outside of the air separator. An observation window is also provided on the side wall of the air separator.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention features a switching mechanism at the tail of the incoming tobacco sheet conveyor belt, allowing the incoming tobacco sheets to be selectively conveyed to either the consolidation tobacco sheet conveyor belt or the branch stem removal line as needed. When the incoming material contains stems, the sheets fall through a hopper onto the branch stem removal line. When the incoming material does not contain stems, the hopper extends to allow the sheets to fall onto the consolidation tobacco sheet conveyor belt for collection and transport. This eliminates the need for multiple branches on the consolidation tobacco sheet conveyor belt, saving factory space. A spreading mechanism is installed on the branch stem removal line to spread the tobacco sheets thinner, thereby improving air classification quality. An air classifier box is installed at the tail of the branch stem removal line to separate the leaves and stems through air classification. After separation, the tobacco sheets fall through a stemless tobacco sheet conveyor pipe onto the consolidation tobacco sheet conveyor belt for collection and transport, while the stems fall onto the stem-containing tobacco sheet conveyor belt for further processing, thus achieving the removal of tobacco sheets containing stems. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the other side of the structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the internal structure of the air separator.

[0016] In the diagram, 1-Incoming tobacco sheet conveyor belt, 2-Branch removal line, 3-Combined tobacco sheet conveyor belt, 4-Hopper, 5-Spreading mechanism, 51-U-shaped frame, 52-Spreading plate, 53-Screw, 6-Steel sheet conveyor belt, 7-Air separator, 71-Discharge port, 72-Side box, 8-Upper air pipe, 9-Lower air pipe, 10-Air supply pipe, 11-Fan, 12-Steel-free tobacco sheet conveyor pipe, 13-Rotating handle, 14-Observation window, 15-Cylinder, 16-Air hole, 17-Moving fan blade. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0019] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 mechanical connection or an electrical 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 invention based on the specific circumstances.

[0020] refer to Figure 1-2As shown, this utility model provides a tobacco leaf branch and stem removal line, including an incoming tobacco leaf conveyor belt 1, a collecting tobacco leaf conveyor belt 3, and a branch and stem removal line 2. The end of the incoming tobacco leaf conveyor belt 1 is equipped with a switching mechanism for transferring incoming tobacco leaves to either the collecting tobacco leaf conveyor belt 3 or the branch and stem removal line 2. In use, when the incoming tobacco leaves are first or second grade stemless tobacco leaves, the switching mechanism directly transfers the tobacco leaves to the collecting tobacco leaf conveyor belt 3. When the incoming tobacco leaves are third or fourth grade tobacco leaves containing tobacco stems, the switching mechanism transfers them to the branch and stem removal line 2 for leaf and stem separation. The branch and stem removal line 2 is equipped with a spreading mechanism 5 for thinning the tobacco leaves to facilitate subsequent air classification. The branch stem removal line 2 is equipped with an air separator 7 at its end. The leaf stems are separated by air separation in the air separator 7. The bottom of the air separator 7 is equipped with a discharge port 71, which is located directly above the tobacco sheet conveyor belt 6 containing stems, so that the branch stems are discharged onto the tobacco sheet conveyor belt 6 containing stems. The top of the air separator 7 is equipped with a side box 72, which is an integral structure with the air separator 7 and connected in a "7" shape. The bottom surface of the side box 72 is inclined. A stemless tobacco sheet conveying pipe 12 is provided on one side of the side box 72. The bottom end of the stemless tobacco sheet conveying pipe 12 is located above the tobacco sheet conveyor belt 3, so that the tobacco sheets after stem removal fall onto the tobacco sheet conveyor belt 3 for collection and conveying.

[0021] In some embodiments, the switching mechanism includes a cylinder 15 and a hopper 4. The cylinder 15 is disposed at the bottom of the incoming tobacco sheet conveyor belt 1, and the ejection end of the cylinder 15 is connected to the hopper 4. Furthermore, in the initial state, the hopper 4 is located above the branch vein rejection line 2, and in the ejection state, the hopper 4 is located above the collecting tobacco sheet conveyor belt 3.

[0022] In some embodiments, the spreading mechanism 5 includes a U-shaped frame 51, a screw 53, and a spreading plate 52. The U-shaped frame 51 is disposed on the side wall of the branch vein rejection line 2. An internal thread is provided in the middle of the U-shaped frame 51 and is threadedly connected to the screw 53. The spreading plate 52 is rotatably disposed at the bottom end of the screw 53. Sliding grooves are provided on the two inner sides of the U-shaped frame 51. The spreading plate 52 is slidably disposed on the U-shaped frame 51. The gap between the spreading plate 52 and the conveying surface of the branch vein rejection line 2 is adjusted by rotating the screw 53, thereby adjusting the spreading thickness of the tobacco sheet containing stems.

[0023] refer to Figure 3As shown, the air separator 7 is equipped with an upper air pipe 8 and a lower air pipe 9. Both the upper air pipe 8 and the lower air pipe 9 are provided with multiple air holes 16. The air holes 16 of the upper air pipe 8 face the side box 72, and the air holes 16 of the lower air pipe 9 face upward. One end of the upper air pipe 8 and the lower air pipe 9 is connected to the air supply pipe 10. The air supply pipe 10 is connected to the fan 11. Airflow is input into the upper air pipe 8 and the lower air pipe 9 through the air supply pipe 10. The air holes 16 of the lower air pipe 9 face upward, thus blowing the tobacco leaves falling on the branch vein removal line 2 upward. The stem part is heavier and will fall from the discharge port 71, while the tobacco leaf part is lighter and blown to a higher height. When it is blown to a high position, since the air holes 16 of the upper air pipe 8 face the side box 72, this part of the tobacco leaf will be blown into the side box 72 and then discharged through the stemless tobacco leaf conveying pipe 12.

[0024] In addition, a movable fan blade 17 is rotatably installed inside the air separator 7. The shaft end of the movable fan blade 17 is connected to a rotating handle 13. The rotating handle 13 is located on the outside of the air separator 7. The tilt of the movable fan blade 17 is controlled by the rotating handle 13, thereby controlling the air volume. An observation window 14 is also provided on the side wall of the air separator 7 for observing the tilt of the movable fan blade 17.

[0025] The working process of this utility model is as follows: select the general tobacco sheet conveyor belt 3 or the branch stem removal line 2 according to the condition of the tobacco sheets containing stems on the incoming tobacco sheet conveyor belt 1. For example, when the incoming tobacco sheets are first and second grade tobacco sheets without stems, the cylinder 15 is opened and the hopper 4 extends. The tobacco sheets are directly conveyed to the collecting tobacco sheet conveyor belt 3. When the incoming tobacco sheets are grade three or four tobacco sheets containing tobacco stems, the hopper 4 retracts and conveys the tobacco sheets to the branch stem removal line 2. When the tobacco sheets are on the branch stem removal line 2, they first pass through the spreading mechanism 5. The tobacco sheets are spread thin by the gap between the spreading plate 52 and the conveying surface of the branch stem removal line 2. Then, they are conveyed to the end of the branch stem removal line 2 and fall into the air classifier box 7. The tobacco sheets are thrown upward by the airflow blown out by the lower air pipe 9. The stems are heavier and fall from the discharge port 71 onto the tobacco sheet containing stems conveyor belt 6. After being thrown high, the tobacco sheets are blown into the side box 72 by the upper air pipe 8 and then discharged through the stemless tobacco sheet conveyor pipe 12 and fall onto the collecting tobacco sheet conveyor belt 3.

[0026] Although the present invention has been described herein with reference to several illustrative embodiments, it should be understood that those skilled in the art can devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, various modifications and improvements can be made to the components or layout of the subject matter arrangement within the scope of the disclosure, drawings, and claims. Besides modifications and improvements to the components or layout, other uses will be apparent to those skilled in the art.

Claims

1. A branch vein and stem removal line for tobacco flakes, comprising an incoming tobacco flake conveyor belt (1), a collecting tobacco flake conveyor belt (3), and a branch vein and stem removal line (2), characterized in that: The tail end of the incoming tobacco sheet conveyor belt (1) is provided with a switching mechanism for switching the incoming tobacco sheets to the consolidation tobacco sheet conveyor belt (3) or the branch stem removal line (2). The branch stem removal line (2) is provided with a spreading mechanism (5) for spreading the tobacco sheets thinly. The tail end of the branch stem removal line (2) is provided with an air classifier box (7). The bottom of the air classifier box (7) is provided with a discharge port (71). The discharge port (71) is located directly above the tobacco sheet conveyor belt (6) containing stems. The top of the air classifier box (7) is provided with a side box (72). The side box (72) is provided with a stemless tobacco sheet conveying pipe (12) on one side. The bottom end of the stemless tobacco sheet conveying pipe (12) is located above the consolidation tobacco sheet conveyor belt (3).

2. The tobacco leaf branch vein removal line according to claim 1, characterized in that: The switching mechanism includes a cylinder (15) and a hopper (4). The cylinder (15) is located at the bottom of the incoming tobacco sheet conveyor belt (1), and the ejection end of the cylinder (15) is connected to the hopper (4).

3. The tobacco leaf branch vein removal line according to claim 2, characterized in that: In the initial state, the hopper (4) of the cylinder (15) is located above the branch vein rejection line (2). In the push-out state, the hopper (4) is located above the combined tobacco sheet conveyor belt (3).

4. The tobacco leaf branch vein removal line according to claim 1, characterized in that: The spreading mechanism (5) includes a U-shaped frame (51), a screw (53) and a spreading plate (52). The U-shaped frame (51) is set on the side wall of the branch vein removal line (2). An internal thread is provided in the middle of the U-shaped frame (51) and threadedly connected to the screw (53). The spreading plate (52) is rotatably provided at the bottom end of the screw (53).

5. The tobacco leaf branch vein removal line according to claim 1, characterized in that: The air separator (7) is provided with an upper air pipe (8) and a lower air pipe (9). Both the upper air pipe (8) and the lower air pipe (9) are provided with multiple air holes (16). The air holes (16) of the upper air pipe (8) face the side box (72), and the air holes (16) of the lower air pipe (9) face upward. One end of the upper air pipe (8) and the lower air pipe (9) are connected to the air supply pipe (10), and the air supply pipe (10) is connected to the fan (11).

6. A tobacco leaf branch vein removal line according to claim 1 or 5, characterized in that: The air separator (7) is equipped with a movable fan blade (17) that rotates inside. The shaft end of the movable fan blade (17) is connected to the handle (13). The handle (13) is located on the outside of the air separator (7). The side wall of the air separator (7) is also equipped with an observation window (14).

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