Tea stem picking machine

Abstract

This utility model relates to the technical field of tea processing equipment and discloses a tea stem-removing machine, including an air separator. The top and bottom of the air separator are respectively provided with a feed inlet and a discharge outlet. A circular hole is opened on one side of the air separator, and an electric fan is fixedly connected inside the circular hole. A support is fixedly connected to the lower end of the air separator. Crossbeams are symmetrically arranged on both sides of the support. A crawler conveyor is arranged between the two crossbeams. The lower end of each crossbeam is fixedly connected to a first support foot at the end point of the crawler conveyor. A first screen plate and a second screen plate are rotatably connected between the two first support feet. The other ends of the first screen plate and the second screen plate are connected by a U-shaped connecting rod. The first screen plate, the second screen plate and the U-shaped connecting rod are rotatably connected. A vibration mechanism is fixedly connected to the lower end of the U-shaped connecting rod. Through the air separator, the first screen plate and the second screen plate, the tea varieties can be screened in multiple stages to remove tea stems.

Description

Technical Field

[0001] This utility model relates to the technical field of tea processing equipment, specifically a tea stem picking machine. Background Technology

[0002] During the tea picking process, tea stems from the tea stalks may get mixed into the tea leaves. In the subsequent tea processing, because the tea stems are hard, they can easily damage the tea leaves, and the tea stems left in the tea leaves can easily affect the quality of the tea.

[0003] In tea production factories, existing tea stem-removing machines use vibrating screens to remove stems. However, during the tea picking process, some plant fluff may fall onto the tea trees and be picked together. These fluff are very light and difficult to remove through the vibrating screen, which affects the quality of the tea.

[0004] Therefore, those skilled in the art have provided a tea stem-picking machine to solve the problems mentioned in the background section. Utility Model Content

[0005] The purpose of this invention is to provide a tea stem-picking machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A tea stem-picking machine includes an air separator, characterized in that an inlet and an outlet are respectively provided at the top and bottom of the air separator, a circular hole is opened on one side of the air separator, and an electric fan is fixedly connected inside the circular hole, and a slag discharge port is opened on the other side of the air separator opposite to the electric fan, a support is fixedly connected to the lower end of the air separator, crossbeams are symmetrically arranged on both sides of the support, a crawler conveyor is arranged between the two crossbeams, the drive wheel shaft and the driven wheel shaft of the crawler conveyor are rotatably connected to the inner wall of the crossbeam, a drive motor is fixedly connected to one end of the crossbeam at the drive wheel of the crawler conveyor, and the output shaft of the drive motor passes through the crossbeam and is fixedly connected to the drive wheel shaft of the crawler conveyor; The lower end of each crossbeam is fixedly connected to a first support leg at the end point of the conveyor belt. A first screen plate and a second screen plate are rotatably connected between the two first support legs. The other ends of the first screen plate and the second screen plate are connected by a U-shaped connecting rod. The first screen plate and the second screen plate are rotatably connected to the U-shaped connecting rod. A vibration mechanism is fixedly connected to the lower end of the U-shaped connecting rod.

[0007] As a further embodiment of this utility model: the vibration mechanism includes a protective shell, a motor, a cam, a roller and a connecting rod. The motor is installed inside the protective shell. The output shaft of the motor is fixedly connected to the cam. The surface of the cam is rolledly connected to the roller. The roller is connected to the connecting rod through a rotating shaft. The other end of the connecting rod is fixedly connected to the lower end of the U-shaped connecting rod.

[0008] As a further embodiment of this utility model: the end of the crossbeam is fixedly connected to a second support foot, the inner wall of the second support foot is provided with a rectangular groove and both sides are provided with an elliptical through hole, both sides of the U-shaped connecting rod are located inside the rectangular groove, and when the roller is at the lowest point, the bottom of the U-shaped connecting rod abuts against the bottom edge of the rectangular groove, and the pivot connecting the first screen plate and the second screen plate to the U-shaped connecting rod is located in the elliptical through hole.

[0009] As a further embodiment of this utility model: a placement platform is fixedly connected to the lower end of the second support leg, and a protective shell is fixedly connected to the placement platform.

[0010] As a further improvement of this utility model: the outer perimeter of the slag discharge port is covered with a baffle and a guide plate is fixedly connected below it.

[0011] As a further improvement of this utility model: the mesh size of the first sieve plate is larger than that of the second sieve plate, and both the first and second sieve plates are provided with discharge ports at their ends. Compared with the prior art, the beneficial effects of this utility model are: 1. With the help of the set-up air separator and electric fan, when the harvested tea leaves fall from the feed inlet, the electric fan can perform preliminary screening of the tea leaves, blowing away the fluff mixed in with the tea leaves. 2. Through the first sieve plate, the second sieve plate, and the vibration mechanism, the tea leaves after air separation can be further screened. The first sieve plate mainly removes larger impurities such as leaves. The tea leaves fall through the first sieve plate into the second sieve plate for further screening. The second sieve plate mainly removes the tea stems and leaves. High-quality tea leaves remain on the second sieve plate and are collected from the discharge port. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the installation structure of the first sieve plate and the second sieve plate in this utility model; Figure 3 This is a schematic diagram of the installation structure of the vibration mechanism in this utility model; Figure 4 This is a schematic diagram of the installation structure of the second support leg in this utility model; Figure 5 This is a schematic diagram of the back structure of the air separator of this utility model.

[0013] In the diagram: 1. Air separator; 2. Feed inlet; 3. Electric fan; 4. Slag discharge outlet; 5. Baffle; 6. Guide plate; 7. Support frame; 8. Crossbeam; 9. Tracked conveyor; 10. Drive motor; 11. First support leg; 12. First screen plate; 13. Second screen plate; 14. Second support leg; 15. U-shaped connecting rod; 16. Placement platform; 17. Vibration mechanism; 1701. Protective shell; 1702. Motor; 1703. Cam; 1704. Roller; 1705. Connecting rod; 18. Rectangular groove; 19. Elliptical through hole; 20. Discharge outlet. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Please refer to [the accompanying drawings]. Figures 1-5 The embodiments of this utility model are as follows: A tea stem sorting machine includes an air classifier box 1. The top and bottom of the air classifier box are respectively provided with a feed inlet 2 and a discharge outlet 20. A round hole is opened on one side of the air classifier box, and an electric fan 3 is fixedly connected in the round hole. A slag discharge outlet 4 is opened on the other side of the air classifier box 1 opposite to the electric fan 3. A support 7 is fixedly connected to the lower end of the air classifier box 1. Crossbeams 8 are symmetrically arranged on both sides of the support 7. A crawler conveyor 9 is arranged between the two crossbeams 8. The drive wheel shaft and the driven wheel shaft of the crawler conveyor 9 are rotatably connected to the inner wall of the crossbeam 8. A drive motor 10 is fixedly connected to one end of the crossbeam 8 at the drive wheel of the crawler conveyor 9. The output shaft of the drive motor 10 passes through the crossbeam 8 and is fixedly connected to the drive wheel shaft of the crawler conveyor 9. The lower end of the crossbeam 8 is fixedly connected to the first support leg 11 at the end point of the conveyor belt 9. The first screen plate 12 and the second screen plate 13 are rotatably connected between the two first support legs 11. The other ends of the first screen plate 12 and the second screen plate 13 are connected by a U-shaped connecting rod 15. The first screen plate 12 and the second screen plate 13 are rotatably connected to the U-shaped connecting rod 15. The lower end of the U-shaped connecting rod 15 is fixedly connected to a vibration mechanism 17. The screen aperture of the first screen plate 12 is larger than that of the second screen plate 13. The ends of the first screen plate 12 and the second screen plate 13 are both provided with discharge ports.

[0015] Through the above technical solution, the harvested tea leaves are first fed into the feed inlet 2 and enter the air separator. As the tea leaves fall, they are initially screened by the electric fan 3, which blows away lighter impurities such as buds. Then, the tea leaves fall from the discharge outlet 20 onto the crawler conveyor 9, which sends them to the first screen plate 12. The first screen plate 12 mainly filters out larger impurities such as leaves. The rest fall onto the second screen plate 13. The second screen plate 13 has a smaller mesh size, so high-quality tea leaves are retained, while small tea stems are removed. The vibration mechanism 17 drives the U-shaped connecting rod 15 and the first and second screen plates 12 and 13, which are rotatably connected to it, to vibrate, thereby improving the screening efficiency.

[0016] The vibration mechanism 17 includes a protective housing 1701, a motor 1702, a cam 1703, a roller 1704, and a connecting rod 1705. The motor 1702 is installed inside the protective housing 1701. The output shaft of the motor 1702 is fixedly connected to the cam 1703. The roller 1704 is rolled on the surface of the cam 1703. The roller 1704 is connected to the connecting rod 1705 through a rotating shaft. The other end of the connecting rod 1705 is fixedly connected to the lower end of the U-shaped connecting rod 15. When the motor 1702 starts, it drives the cam 1703 to rotate. Under the action of gravity, the roller 1704 will rotate closely against the surface of the cam 1703, thus driving the connecting rod 1705 to vibrate up and down. This can drive the first screen plate 12 and the second screen plate 13 to vibrate up and down, which helps to improve the screening efficiency of the first screen plate 12 and the second screen plate 13.

[0017] The end of the crossbeam 8 is fixedly connected to a second support foot 14. The inner wall of the second support foot 14 is provided with a rectangular groove 18 and an elliptical through hole 19 is provided on both sides. The two sides of the U-shaped connecting rod 15 are located inside the rectangular groove 18. When the roller 1704 is at the lowest point, the bottom of the U-shaped connecting rod 15 abuts against the bottom edge of the rectangular groove 18. The shaft connecting the first screen plate 12 and the second screen plate 13 to the U-shaped connecting rod 15 is located in the elliptical through hole 19. When the roller 1704 falls from the highest point of the cam 1703 to the lowest point, the impact force of the U-shaped connecting rod 15 and the first screen plate 12 and the second screen plate 13 will be dispersed by the second support foot 14, thereby protecting the shaft of the motor 1702 and increasing its service life.

[0018] The lower end of the second support leg 14 is fixedly connected to a placement platform 16, and a protective shell 1701 is fixedly connected to the placement platform 16. A baffle 5 is covered around the outside of the slag discharge port 4, and a guide plate 6 is fixedly connected below it. The baffle 5 blocks the impurities blown out from the slag discharge port 4, which can effectively prevent the phenomenon of fluff flying around.

[0019] The working principle of this utility model is as follows: When in use, the electric fan 3, drive motor 10, and motor 1702 are started. At this time, the harvested tea leaves are added from the feed inlet 2. As the tea leaves fall, the wind force of the electric fan 3 will blow out the chaff and other impurities mixed in with the leaves from the chaff discharge outlet 4. The rest will fall through the discharge outlet onto the crawler conveyor 9 and be transported to the first screen plate 12. At this time, the motor 1702 is started, and the motor 1702 will drive the cam 1703 to rotate. The roller 1704 will rotate closely against the surface of the cam 1703 under the action of gravity, which will drive the connecting rod 1705 to vibrate up and down. This will enable the U-shaped connecting rod 15 to drive the first screen plate 12 and the second screen plate 13 to vibrate up and down. The first screen plate 12 mainly filters out larger impurities such as leaves. The rest falls onto the second screen plate 13. The screen aperture of the second screen plate 13 is smaller, so high-quality tea leaves will be retained, while small tea stems will be removed by the second screen plate 13. This completes the tea stem removal work.

[0020] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A tea stem sorting machine, comprising an air separator (1), characterized in that, The top and bottom of the air classifier are respectively provided with a feed inlet (2) and a discharge outlet (20). A round hole is opened on one side of the air classifier, and an electric fan (3) is fixedly connected in the round hole. A slag discharge outlet (4) is opened on the other side of the air classifier (1) opposite to the electric fan (3). A bracket (7) is fixedly connected to the lower end of the air classifier (1). Crossbeams (8) are symmetrically arranged on both sides of the bracket (7). A crawler conveyor (9) is arranged between the two crossbeams (8). The drive wheel shaft and the driven wheel shaft of the crawler conveyor (9) are rotatably connected to the inner wall of the crossbeam (8). A drive motor (10) is fixedly connected to one end of the drive wheel of the crawler conveyor (9) on the crossbeam (8). The output shaft of the drive motor (10) passes through the crossbeam (8) and is fixedly connected to the drive wheel shaft of the crawler conveyor (9). The lower end of the crossbeam (8) is fixedly connected to the first support foot (11) at the end point of the conveyor belt (9). The two first support feet (11) are respectively rotatably connected to the first screen plate (12) and the second screen plate (13). The other ends of the first screen plate (12) and the second screen plate (13) are connected by a U-shaped connecting rod (15). The first screen plate (12) and the second screen plate (13) are rotatably connected to the U-shaped connecting rod (15). The lower end of the U-shaped connecting rod (15) is fixedly connected to a vibration mechanism (17).

2. The tea stem picking machine according to claim 1, characterized in that, The vibration mechanism (17) includes a protective shell (1701), a motor (1702), a cam (1703), a roller (1704), and a connecting rod (1705). The motor (1702) is installed inside the protective shell (1701). The output shaft of the motor (1702) is fixedly connected to the cam (1703). The roller (1704) is rolled on the surface of the cam (1703). The roller (1704) is connected to the connecting rod (1705) through a rotating shaft. The other end of the connecting rod (1705) is fixedly connected to the lower end of the U-shaped connecting rod (15).

3. The tea stem picking machine according to claim 2, characterized in that, The end of the crossbeam (8) is fixedly connected to a second support foot (14). The inner wall of the second support foot (14) is provided with a rectangular groove (18) and an elliptical through hole (19) is provided on both sides. The two sides of the U-shaped connecting rod (15) are located inside the rectangular groove (18). When the roller (1704) is at the lowest point, the bottom of the U-shaped connecting rod (15) abuts against the bottom edge of the rectangular groove (18). The pivot connecting the first sieve plate (12) and the second sieve plate (13) to the U-shaped connecting rod (15) is located in the elliptical through hole (19).

4. The tea stem picking machine according to claim 3, characterized in that, The lower end of the second support leg (14) is fixedly connected to a placement platform (16), and a protective shell (1701) is fixedly connected to the placement platform (16).

5. The tea stem picking machine according to claim 1, characterized in that, The outer perimeter of the slag discharge port (4) is covered by a baffle (5) and a guide plate (6) is fixedly connected below it.

6. The tea stem-picking machine according to claim 1, characterized in that, The mesh size of the first sieve plate (12) is larger than that of the second sieve plate (13), and both the first sieve plate (12) and the second sieve plate (13) are provided with discharge ports for collection at their ends.

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