Black tea vibrating screening machine

Abstract

This utility model discloses a vibrating screening machine for black tea, including a base frame. Multiple sliding rods are fixedly arranged between the inner walls of the front and rear sides of the base frame. A base is slidably fitted onto the outside of the multiple sliding rods. Springs are respectively fitted at the front and rear ends of the sliding rods. A drive assembly is provided at the bottom of the base. A transmission seat is provided at the top of the base, and a transmission belt is provided on the transmission seat. Two support plates are also provided at the top of the base. The top of the support plates is inclined, and a second screening plate is fixedly mounted on the top of the support plates. A first screening plate is fixedly connected to the top of the second screening plate via multiple support rods. An auxiliary baffle is snapped onto the surface of the second screening plate. An outer frame plate is provided at the top of the base frame, and a feed hopper is provided on the top left side of the outer frame plate. This device can change the screening frequency by setting the auxiliary baffle. Operators can choose whether to use the auxiliary baffle according to their needs, making it highly applicable and convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of black tea processing technology, and in particular to a black tea vibration screening machine. Background Technology

[0002] Black tea, also known as raw black tea, refers to unpressed black tea. It has a coarse, broad leaf appearance and a dark brown, oily sheen. Black tea is one of the six major tea categories and is a post-fermented tea. It also contains certain nutrients that can effectively aid digestion and reduce fat and weight. During the harvesting process, black tea is graded based on factors such as tea quality, tenderness, aroma, color, shape, moisture content, and pesticide residues. Grading based on tenderness is determined by factors such as the content of tea buds, leaf size, and maturity. Before production and packaging, the size of the tea leaves needs to be screened to grade the tea for sale.

[0003] However, existing screening devices can only screen once or twice, which cannot meet different production needs and has low applicability. Furthermore, the collection of tea leaves after screening is inconvenient and cannot be done quickly. Therefore, we designed a vibrating screening machine for black tea. Utility Model Content

[0004] The purpose of this invention is to provide a vibrating screening machine for black tea to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A vibrating screening machine for black tea includes a base frame with support legs at the four corners of the bottom. Multiple sliding rods are fixed between the inner walls of the front and rear sides of the base frame. A base is slidably fitted onto the outer sides of the sliding rods. Springs are fitted at the front and rear ends of each sliding rod. A drive assembly is located at the bottom of the base. A transmission seat with a transmission belt is located at the top of the base. Two support plates are also located at the top of the base, with the tops of the support plates inclined. A second screening plate is fixedly mounted on the top of the support plates. A first screening plate is fixedly connected to the top of the second screening plate via multiple support rods. A first inclined guide chute is provided at the lower end of a screening plate, and a second inclined guide chute is provided at the lower end of a second screening plate. The first and second inclined guide chutes are staggered. The conveyor belt is located directly below the second screening plate. Multiple first screen holes are provided through the first screening plate, and multiple second screen holes are provided through the second screening plate. The diameter of the first screen holes is larger than that of the second screen holes. An auxiliary baffle is attached to the surface of the second screening plate. An outer frame plate is provided at the top of the bottom frame, which covers the outside of the first screening plate. A feed hopper is provided on the top left side of the outer frame plate.

[0006] As a preferred embodiment of this utility model: the auxiliary baffle includes a snap-fit ​​part integrally formed on one side of the material guiding part, the snap-fit ​​part is provided with two handles on the side surface away from the material guiding part, the vertical cross-section of the snap-fit ​​part is an inverted "U" shaped structure, the snap-fit ​​part snaps onto the outside of the side plate at the left end of the second screening plate, and the material guiding part abuts against the surface of the second screening plate.

[0007] As a further preferred embodiment of this utility model: the drive assembly includes a U-shaped mounting plate disposed in the middle of the bottom surface of the base frame, a drive motor is provided on the top of the U-shaped mounting plate, a groove is provided at the bottom center of the base, a cam is rotatably disposed in the groove, the output shaft of the drive motor is connected to the bottom surface of the cam, and the outer side surface of the cam slides against the side wall of the groove.

[0008] As a further preferred embodiment of this utility model: a scraper is provided at the top left end of the bottom frame, and the top of the scraper abuts against the surface at the left end of the conveyor belt.

[0009] As a further preferred embodiment of this utility model: one end of the spring is connected to the inner wall of the base frame, and the other end is connected to the outer surface of the base.

[0010] As a further preferred embodiment of this utility model: the two support plates are symmetrically distributed on the front and rear sides of the transmission base.

[0011] As a further preferred embodiment of this utility model: the second screening plate is inclined and parallel to the first screening plate.

[0012] The beneficial effects of this utility model are: 9. When using this device, the drive motor is started, and the output shaft of the drive motor drives the cam to rotate. The outer side of the cam then abuts against the side wall of the groove, causing the base to slide outside the slide rod. Due to the characteristics of the cam and the combined action of multiple springs, the base can ultimately make a short-distance reciprocating movement, thus achieving the purpose of shaking the base. At the same time, in conjunction with the inclined first and second screening plates, the material moves downward, ensuring the normal operation of the screening function. This device has two collection boxes A on the right side of the bottom frame, corresponding to the first and second inclined guide troughs respectively, for convenient collection of screened tea leaves. There is also a collection box B on the left side of the bottom frame for collecting screened tea leaves conveyed on the conveyor belt. The overall collection operation of tea leaves of various sizes is simple and quick, reducing labor intensity and improving work efficiency.

[0013] 10. This device is equipped with an auxiliary baffle, which includes a guide part, a locking part, and a handle. The locking part can be locked onto the outside of the side plate on the left end of the second screening plate, and the guide part can abut against the surface of the second screening plate. That is, the guide part can cover multiple second screen holes. At this time, the tea leaves falling from the first screen hole of the first screening plate will slide directly to the right through the guide part and into the second inclined guide trough and be discharged. Therefore, the use of the auxiliary baffle can realize one-time screening of black tea leaves, that is, only one screening by the first screening plate, and the original tea leaf size specifications are divided into large and small sizes. When the auxiliary baffle is not used, it can be removed by the handle. That is, after the tea leaves have been screened by the first screening plate, they can continue to be screened by the second screening plate, and the original tea leaf size specifications are divided into large, medium and small sizes. The staff can choose whether to use the auxiliary baffle according to the needs. The device is highly applicable and convenient to use. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a perspective view of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of this utility model without the outer frame plate; Figure 3 for Figure 2 A structural diagram from another perspective; Figure 4 This is an exploded view of a partial structure of the present invention; Figure 5 This is a partial structural diagram of the bottom of the base in this utility model.

[0016] The components are as follows: 1. Base frame; 2. Outer frame plate; 3. Feed hopper; 4. First screening plate; 5. First inclined guide chute; 6. Second inclined guide chute; 7. Second screening plate; 8. Support leg; 9. U-shaped mounting plate; 10. Base; 11. Conveyor belt; 12. Handle; 13. Snap-fit ​​part; 14. Guide part; 15. Support rod; 16. Support plate; 17. Conveyor seat; 18. Spring; 19. Scraper; 20. Slide rod; 21. Groove; 22. Drive motor; 23. Cam. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0018] Please see Figure 1-5In this embodiment of the present invention, a vibrating screening machine for black tea includes a base frame 1. Support legs 8 are respectively provided at the four corners of the bottom of the base frame 1. Multiple sliding rods 20 are fixed between the inner walls of the front and rear sides of the base frame 1. A base 10 is slidably fitted onto the outside of the multiple sliding rods 20. Springs 18 are respectively fitted at the front and rear ends of the sliding rods 20. One end of the spring 18 is connected to the inner wall of the base frame 1, and the other end is connected to the outer surface of the base 10. A driving assembly is provided at the bottom of the base 10. A transmission seat 17 is provided at the top of the base 10, and a transmission belt 11 is provided on the transmission seat 17. Two support plates 16 are also provided at the top of the base 10. The two support plates 16 are symmetrically distributed on the front and rear sides of the transmission seat 17. The tops of the support plates 16 are inclined, and a second screening plate is fixedly mounted on the top of the support plates 16. 7. The top of the second screening plate 7 is fixedly connected to the first screening plate 4 by multiple support rods 15. The second screening plate 7 is inclined and parallel to the first screening plate 4. The lower end of the first screening plate 4 is provided with a first inclined guide chute 5, and the lower end of the second screening plate 7 is provided with a second inclined guide chute 6. The first inclined guide chute 5 and the second inclined guide chute 6 are staggered. The conveyor belt 11 is located directly below the second screening plate 7. Multiple first screen holes are opened through the first screening plate 4, and multiple second screen holes are opened through the second screening plate 7. The diameter of the first screen holes is larger than the diameter of the second screen holes. An auxiliary baffle is snapped onto the surface of the second screening plate 7. The top of the bottom frame 1 is provided with an outer frame plate 2, which covers the outside of the first screening plate 4. The top left side of the outer frame plate 2 is provided with a feed hopper 3.

[0019] The auxiliary baffle includes a snap-fit ​​part 13 integrally formed on one side of the guide part 14. Two handles 12 are provided on the surface of the snap-fit ​​part 13 away from the guide part 14. The vertical cross-section of the snap-fit ​​part 13 is an inverted "U" shape. The snap-fit ​​part 13 can snap onto the outside of the side plate at the left end of the second screening plate 7, and the guide part 14 can abut against the surface of the second screening plate 7. That is, the guide part 14 can cover multiple second screen holes. At this time, the tea leaves falling from the first screen hole of the first screening plate 4 slide directly to the right through the guide part 14 to the second inclined guide trough 6. Since the tea leaves are discharged internally and externally, the auxiliary baffle allows for a single screening of the black tea leaves, meaning they only pass through the first screening plate 4, separating the original tea leaves into large and small sizes. When the auxiliary baffle is not in use, it can be removed via handle 12. In this case, after passing through the first screening plate 4, the tea leaves can continue to be screened by the second screening plate 7, separating the original tea leaves into large, medium, and small sizes. Staff can choose whether to use the auxiliary baffle according to their needs. The device is highly adaptable and easy to use.

[0020] The drive assembly includes a U-shaped mounting plate 9 located in the middle of the bottom surface of the base frame 1. A drive motor 22 is mounted on the top of the U-shaped mounting plate 9. A groove 21 is formed at the center of the bottom of the base 10. A cam 23 is rotatably mounted within the groove 21. The output shaft of the drive motor 22 is connected to the bottom surface of the cam 23, and the outer surface of the cam 23 slides against the side wall of the groove 21. In use, the drive motor 22 is started, and its output shaft drives the cam 23 to rotate. This rotation, through the contact between the outer surface of the cam 23 and the side wall of the groove 21, causes the base 10 to slide outside the slide rod 20. Due to the characteristics of the cam 23 and the multiple springs 18... Under the combined action, the base 10 can move back and forth over a short distance, thus achieving the purpose of shaking the base 10. At the same time, in conjunction with the inclined first screening plate 4 and the second screening plate 7, the material moves downward, ensuring the normal operation of the screening function. The device has two collection boxes A on the right side of the base frame 1, corresponding to the first inclined guide chute 5 and the second inclined guide chute 6, respectively, to facilitate the collection of screened tea leaves. A collection box B is also provided on the left side of the base frame 1 to collect the screened tea leaves conveyed from the conveyor belt 11. The overall collection operation of tea leaves of various sizes and specifications is simple and fast, reducing the workload and improving work efficiency.

[0021] A scraper 19 is provided at the top left end of the bottom frame 1. The top of the scraper 19 abuts against the surface at the left end of the conveyor belt 11. The scraper 19 is used to scrape off the smallest tea leaves on the surface of the conveyor belt 11, and the scraped tea leaves just slide down into the collection box B through the scraper 19, preventing tea leaves from adhering to the surface of the conveyor belt 11.

[0022] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A vibrating screening machine for black tea, comprising a base frame (1), wherein support legs (8) are respectively provided at the four corners of the bottom of the base frame (1); characterized in that: Multiple sliding rods (20) are fixedly provided between the inner walls of the front and rear sides of the base frame (1). The base (10) is slidably sleeved on the outside of the multiple sliding rods (20). Springs (18) are respectively sleeved at the front and rear ends of the sliding rods (20). A driving assembly is provided at the bottom of the base (10). A transmission seat (17) is provided at the top of the base (10). A transmission belt (11) is provided on the transmission seat (17). Two support plates (16) are also provided at the top of the base (10). The top of the support plates (16) is inclined. A second screening plate (7) is fixedly provided at the top of the support plates (16). The top of the second screening plate (7) is fixedly connected to the first screening plate (4) by multiple support rods (15). The first screening plate (4) has a first inclined guide trough (5) at its lower end, and the second screening plate (7) has a second inclined guide trough (6) at its lower end. The first inclined guide trough (5) and the second inclined guide trough (6) are staggered. The conveyor belt (11) is located directly below the second screening plate (7). The first screening plate (4) has multiple first screen holes through it, and the second screening plate (7) has multiple second screen holes through it. The surface of the second screening plate (7) is fitted with an auxiliary baffle that is compatible with it. The top of the bottom frame (1) is provided with an outer frame plate (2), which covers the outside of the first screening plate (4). The top left side of the outer frame plate (2) is provided with a feed hopper (3).

2. The vibrating screening machine for black tea according to claim 1, characterized in that: The auxiliary baffle includes a snap-fit ​​part (13) integrally formed on one side of the material guide part (14). The snap-fit ​​part (13) has two handles (12) on the side surface away from the material guide part (14). The vertical cross-section of the snap-fit ​​part (13) is an inverted "U" shaped structure. The snap-fit ​​part (13) snaps onto the outside of the side plate at the left end of the second screening plate (7). The material guide part (14) abuts against the surface of the second screening plate (7).

3. The vibrating screening machine for black tea according to claim 2, characterized in that: The drive assembly includes a U-shaped mounting plate (9) located in the middle of the bottom surface of the base frame (1). A drive motor (22) is provided on the top of the U-shaped mounting plate (9). A groove (21) is provided at the center of the bottom of the base (10). A cam (23) is rotatably provided in the groove (21). The output shaft of the drive motor (22) is connected to the bottom surface of the cam (23). The outer side of the cam (23) slides against the side wall of the groove (21).

4. The vibrating screening machine for black tea according to claim 3, characterized in that: The top left end of the bottom frame (1) is provided with a scraper (19), and the top end of the scraper (19) abuts against the surface at the left end of the conveyor belt (11).

5. The vibrating screening machine for black tea according to claim 1, characterized in that: One end of the spring (18) is connected to the inner wall of the base frame (1), and the other end is connected to the outer surface of the base (10).

6. The vibrating screening machine for black tea according to claim 5, characterized in that: The two support plates (16) are symmetrically distributed on the front and rear sides of the transmission base (17).

7. A vibrating screening machine for black tea according to claim 6, characterized in that: The second screening plate (7) is tilted and parallel to the first screening plate (4).

8. The vibrating screening machine for black tea according to claim 1, characterized in that: The aperture size of the first sieve hole is larger than the aperture size of the second sieve hole.

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