A special roller crushing device for refining tea

CN224894246UActive Publication Date: 2026-10-27QUZHOU ZHONGRUI ELECTRIC TECH CO LTD +1
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202522598229.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-12-08
Publication Date
2026-10-27
Estimated Expiration
2035-12-08

AI Technical Summary

Technical Problem

[0003]现有茶叶梗叶分离的装置分离效果效率较低,不利于实现茶叶梗叶分离工序的高效化生产

Benefits of technology

1.茶叶从分离装置的进料端进入分离装置内部被转动辊破碎分离,在分离前可以通过调节装置调节转动辊之间的距离,不仅可以有效提高茶叶片的破碎效果,提高梗叶分离效果,还可以满足茶叶不同的切碎需求,具有更高的实用性。

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224894246U_ABST
    Figure CN224894246U_ABST
Patent Text Reader

Abstract

The utility model belongs to the technical field of tea preparation, especially relate to a special roller crushing device for tea refining. The utility model provides a special roller crushing device for tea refining, including support frame, be provided with on the support frame: separating device, the separating device sets up on the support frame, the separating device includes a pair of rotating roller, the separating device is used for crushing tea leaf, adjusting device, the adjusting device sets up the top of separating device, the adjusting device is connected with separating device, the adjusting device is used for adjusting the distance between rotating roller. Tea enters the inside of separating device from the feed end of separating device and is crushed and separated by rotating roller, can adjust the distance between rotating roller before separating through adjusting device, not only can effectively improve the crushing effect of tea piece, improve the effect that the leaf separates, can satisfy different cutting needs of tea leaf still, have higher practicality.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model belongs to the field of tea preparation technology, and in particular relates to a special roller crushing device for refining tea. Background Technology

[0002] Tencha refining is a crucial process in further processing tencha into matcha, with the core objective of improving the purity, uniformity, and fineness of the tea leaves. The roller crushing process in tencha refining separates the tea leaves from the stems, ensuring the purity and efficiency of subsequent processing.

[0003] Existing tea stem and leaf separation devices have low separation efficiency, which is not conducive to achieving high-efficiency production in the tea stem and leaf separation process. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned technical problems by providing a special roller crushing device for tea refining, which facilitates the separation of tea leaves from stems and stalks, thereby realizing a continuous production process for separating tea leaves and stems.

[0005] In view of this, the present invention provides a special roller crushing device for tea refining, characterized in that it includes a support frame, on which are provided: A separation device, mounted on a support frame, includes a pair of rotating rollers and is used to crush tea leaves; An adjusting device is provided above the separating device and is connected to the separating device. The adjusting device is used to adjust the distance between the rotating rollers.

[0006] In this technical solution, tea leaves enter the separation device from the feed end and are crushed and separated by rotating rollers. Before separation, the distance between the rotating rollers can be adjusted by the adjustment device, which can not only effectively improve the crushing effect of tea leaves and the separation effect of stems and leaves, but also meet different tea cutting needs, thus having higher practicality.

[0007] Furthermore, a hopper is fixedly installed on the support frame. The hopper is positioned above the separation device and is in the shape of an inverted trapezoid. The lower end of the hopper is connected to the feed end of the separation device.

[0008] Furthermore, the separation device includes: A crushing box, which is fixedly mounted on a support frame, and whose upper surface is fixedly connected to a hopper; A rotating roller is provided, which is rotatably disposed inside the crushing box along the width direction of the crushing box. A pair of rotating rollers are provided, and a first roller and a second roller are fixedly disposed at one end of the rotating roller. The first roller and the second roller are symmetrically disposed inside the crushing box. A drive assembly is disposed on one side of the support frame and is connected to the rotating roller. The drive assembly is used to drive the crushing roller to rotate inside the crushing box.

[0009] In this technical solution, the drive component drives the rotating roller to rotate inside the crushing box. Tea leaves are fed into the crushing box from the hopper and crushed between the first roller and the second roller, thereby achieving stem and leaf separation.

[0010] Furthermore, the circumferential surfaces of the first and second rollers are provided with anti-slip textures.

[0011] In this technical solution, the anti-slip texture of the first and second rollers can increase the friction between the first and second rollers and the tea leaves, so as to better crush the tea leaves, prevent the tea leaves from slipping during the crushing process, and improve the stability and uniformity of crushing.

[0012] Furthermore, the driving component includes: A drive motor, which is fixedly mounted on a support frame; A reduction belt pulley assembly is rotatably mounted above a support frame. The reduction pulleys in the reduction belt pulley assembly are respectively connected to rotating rollers, and the reduction belt pulley assembly is connected to the output end of a drive motor. A drive belt is disposed on the surface of a reduction belt pulley assembly, and the drive belt is used to drive the reduction pulley in the reduction belt pulley assembly to rotate in a specified direction.

[0013] In this technical solution, the drive motor drives one of the reduction pulleys in the reduction pulley set to rotate, which in turn drives the transmission belt to move on the reduction pulley set, thereby driving a set of reduction pulley sets to rotate in a specified direction. The reduction is achieved by the diameter difference between the reduction pulleys. Combined with the hexagonal belt drive design, it ensures the precise operation of the two rollers and meets the crushing requirements of smooth working transmission and low noise.

[0014] Furthermore, a protective cover is provided on the outside of the reduction belt pulley assembly. The protective cover is fixedly mounted on the support frame and is connected through the drive motor.

[0015] In this technical solution, the protective cover encloses the reduction pulley assembly and the transmission belt, protecting them from damage. Furthermore, the protective cover reduces external dust and debris from contaminating the reduction pulley assembly and the transmission belt, thus extending their service life.

[0016] Furthermore, the adjusting device includes: An adjusting box is located between the crushing box and the protective cover. The adjusting box is fixedly mounted on the support frame. A sliding groove is provided on the side wall of the adjusting box, and the sliding groove is slidably connected to the second rotating roller. A support base is disposed above a rotating roller connected to a second roller, and the support base is press-fitted to the rotating roller. An adjusting screw is provided on a support base along the width direction of the support frame. One end of the adjusting screw is threadedly connected to the support base, and the adjusting screw is connected through the adjusting box. A hand crank is fixedly provided on one end of the adjusting screw.

[0017] In this technical solution, the operator drives the adjusting screw to rotate by turning the hand crank, which in turn causes the support to slide on the adjusting screw. Since the support is pressed and fixedly connected to the rotating roller, the rotating roller can slide in the sliding groove, thereby driving the second roller to move in the crushing box. Through this series of linkages, the operator can accurately adjust the distance between the second roller and the first roller.

[0018] Furthermore, the regulating box is fixedly provided with a support plate, which is located below the rotating roller. A rotating block is rotatably provided at one end of the support plate, and one end of the rotating block is arc-shaped. The rotating block is in contact with the outer surface of the rotating roller.

[0019] In this technical solution, the rotating block supports the rotating roller, preventing it from slipping during rotation. The rotating block's rotation adapts to the angle changes of the rotating roller during sliding, ensuring stable contact with it at all times. The support plate provides a stable mounting base for the rotating block, and the arc-shaped design of the rotating block's end better conforms to the outer surface of the rotating roller, reducing contact stress and further improving the reliability of the support. This ensures the stability and accuracy of the second roller during distance adjustment and crushing operations.

[0020] Furthermore, a fixing plate is fixedly installed inside the adjustment box, and a spring is fixedly installed on the surface of the fixing plate, and the spring is fixedly installed on the adjustment screw.

[0021] In this technical solution, the elasticity of the spring can buffer the impact force during breakage and prevent hard impurities (such as a small amount of tea stems) from damaging the surface of the roller.

[0022] Furthermore, a belt tensioning assembly is provided inside the protective cover, which is used to tighten the transmission belt on the reduction belt pulley assembly.

[0023] In this technical solution, during the adjustment of the rotating roller, the position of the reduction pulley in the reduction belt pulley group will change, which will reduce the tension between the transmission belt and the reduction belt pulley. At this time, the belt tensioning component can automatically or manually adjust the tension of the transmission belt to ensure that the transmission efficiency is not affected.

[0024] Furthermore, the belt tightening assembly includes: A tightening seat is fixedly installed on the inner wall of the adjusting box, and a tightening rod is provided on the tightening seat, which is threadedly connected to the tightening seat; A tightening plate is rotatably mounted on one side of the adjusting box. Both ends of the tightening plate are connected to the reduction pulleys in the reduction belt pulley set. The tightening plate is threadedly connected to one end of the tightening rod.

[0025] In this technical solution, rotating the tensioning rod causes it to slide on the tensioning seat, which in turn causes the tensioning plate to rotate in the adjustment box. This adjusts the position of the reduction pulley in the reduction belt pulley assembly, ensuring that the transmission belt maintains appropriate tension and runs stably on the reduction belt pulley assembly. This prevents slippage or loosening and ensures efficient transmission of the entire transmission system.

[0026] The beneficial effects of this utility model are: 1. Tea leaves enter the separation device from the feed end and are crushed and separated by rotating rollers. Before separation, the distance between the rotating rollers can be adjusted by the adjustment device, which can not only effectively improve the crushing effect of tea leaves and the separation effect of stems and leaves, but also meet different tea cutting needs and has higher practicality. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the separation device of this utility model; Figure 3 This is an exploded structural diagram of the drive component of this utility model; Figure 4 This is a schematic diagram of the structure of the adjusting device of this utility model; Figure 5 This is a cross-sectional structural schematic diagram of the belt tightening assembly of this utility model; The markings in the diagram are as follows: 1. Support frame; 2. Separation device; 3. Rotating roller; 4. Adjusting device; 5. Hopper; 6. Crushing box; 7. Tensioning plate; 8. First roller; 9. Second roller; 10. Drive assembly; 11. Drive motor; 12. Reduction belt pulley set; 13. Reduction wheel; 14. Transmission belt; 15. Protective cover; 16. Adjusting box; 17. Sliding groove; 18. Support seat; 19. Adjusting screw; 20. Hand crank; 21. Support plate; 22. Rotating block; 23. Fixing plate; 24. Spring; 25. Belt tensioning assembly; 26. Tensioning seat; 27. Tensioning rod. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0029] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0030] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0031] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0032] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0033] Example 1: like Figure 1-5 As shown, this utility model provides a special roller crushing device for tea refining, including a support frame 1, on which the following are provided: Separation device 2, which is mounted on support frame 1, includes a pair of rotating rollers 3 and is used to crush tea leaves; Adjustment device 4 is disposed above separation device 2 and connected to separation device 2. Adjustment device 4 is used to adjust the distance between rotating rollers 3.

[0034] Tea leaves enter the separator 2 from the feed end and are crushed and separated by the rotating rollers 3. Before separation, the distance between the rotating rollers 3 can be adjusted by the adjusting device 4. This not only effectively improves the crushing effect of tea leaves and the separation effect of stems and leaves, but also meets different tea cutting needs, making it more practical.

[0035] A hopper 5 is fixedly installed on the support frame 1. The hopper 5 is located above the separation device 2. The hopper 5 is in the shape of an inverted trapezoid, and the lower end of the hopper 5 is connected to the feed end of the separation device 2.

[0036] The separation device 2 includes: Crushing box 6, the crushing box 6 is fixedly mounted on the support frame 1, and the upper surface of the crushing box 6 is fixedly connected to the hopper 5; Rotating roller 3, the rotating roller 3 is rotatably arranged in the crushing box 6 along the width direction of the crushing box 6. There is a pair of rotating rollers 3. One end of the rotating roller 3 is fixedly provided with a first roller 8 and a second roller 9. The first roller 8 and the second roller 9 are symmetrically arranged in the crushing box 6. A drive assembly 10 is disposed on one side of the support frame 1. The drive assembly 10 is connected to the rotating roller 3 and is used to drive the crushing roller to rotate inside the crushing box 6.

[0037] The drive assembly 10 drives the rotating roller 3 to rotate inside the crushing box 6. Tea leaves are fed into the crushing box 6 from the hopper 5 and crushed between the first roller 8 and the second roller 9, thereby achieving stem and leaf separation.

[0038] The circumferential surfaces of the first roller 8 and the second roller 9 are provided with anti-slip textures.

[0039] In this technical solution, the anti-slip texture of the first roller 8 and the second roller 9 can increase the friction between the first roller 8 and the second roller 9 and the tea leaves, so as to better crush the tea leaves, prevent the tea leaves from slipping during the crushing process, and improve the stability and uniformity of crushing.

[0040] The driving component 10 includes: Drive motor 11, the drive motor is fixedly mounted on support frame 1; A reduction belt pulley assembly 12 is rotatably mounted above the support frame 1. The reduction pulleys 13 in the reduction belt pulley assembly 12 are respectively connected to the rotating roller 3. The reduction belt pulley assembly 12 is connected to the output end of the drive motor 11. A transmission belt 14 is disposed on the wheel surface of the reduction belt pulley assembly 12, and the transmission belt 14 is used to drive the reduction pulley 13 in the reduction belt pulley assembly 12 to rotate in a specified direction.

[0041] The drive motor 11 drives one of the reduction pulleys 13 in the reduction pulley set 12 to rotate, which in turn drives the transmission belt 14 to move on the reduction pulley set 12, thereby driving a set of reduction pulleys 12 to rotate in a specified direction. The reduction is achieved by the diameter difference between the reduction pulleys 13. The hexagonal belt drive design ensures the precise operation of the two rollers, while also meeting the requirements of smooth working transmission and low noise crushing.

[0042] The reduction belt pulley assembly 12 is provided with a protective cover 15, which is fixedly mounted on the support frame 1 and is connected through the drive motor 11.

[0043] The protective cover 15 encloses the reduction pulley assembly 12 and the transmission belt 14, protecting them from damage. Furthermore, the protective cover 15 reduces external dust and debris from contaminating the reduction pulley assembly 12 and the transmission belt 14, thus extending their service life.

[0044] The adjusting device 4 includes: An adjusting box 16 is located between the crushing box 6 and the protective cover 15. The adjusting box 16 is fixedly mounted on the support frame 1. A sliding groove 17 is provided on the side wall of the adjusting box 16, and the sliding groove 17 is slidably connected to the second rotating roller 3. Support base 18, the support base 18 is disposed above the rotating roller 3 connected to the second roller 9, and the support base 18 is pressed and connected to the rotating roller 3; An adjusting screw 19 is provided on a support base 18 along the width direction of the support frame 1. One end of the adjusting screw 19 is threadedly connected to the support base 18. The adjusting screw 19 is also connected through the adjusting box 16. A hand crank 20 is fixedly provided on one end of the adjusting screw 19.

[0045] The operator drives the adjusting screw 19 to rotate by turning the hand crank 20, which in turn causes the support seat 18 to slide on the adjusting screw 19. Since the support seat 18 is pressed and fixedly connected to the rotating roller 3, the rotating roller 3 can slide in the sliding groove 17, which in turn causes the second roller 9 to move in the crushing box 6. Through this series of linkages, the operator can accurately adjust the distance between the second roller 9 and the first roller 8.

[0046] The regulating box 16 is fixedly provided with a support plate 21, which is located below the rotating roller 3. A rotating block 22 is rotatably provided at one end of the support plate 21. One end of the rotating block 22 is arc-shaped and is in contact with the outer surface of the rotating roller 3.

[0047] The rotating block 22 supports the rotating roller 3, preventing it from slipping during rotation. The rotating block 22's rotation adapts to the angle changes of the rotating roller 3 during sliding, ensuring stable contact with it at all times. The support plate 21 provides a stable mounting base for the rotating block 22, and the arc-shaped end of the rotating block 22 better fits the outer surface of the rotating roller 3, reducing contact stress and further improving the reliability of the support. This ensures the stability and accuracy of the second roller 9 during distance adjustment and crushing operations.

[0048] A fixing plate 23 is fixedly installed inside the adjusting box 16, and a spring 24 is fixedly installed on the surface of the fixing plate 23. The spring 24 is fixedly installed on the adjusting screw 19.

[0049] The elasticity of spring 24 can buffer the impact force during breakage and prevent hard impurities (such as a small amount of tea stems) from damaging the roller surface.

[0050] The protective cover 15 is provided with a belt tensioning assembly 25, which is used to tighten the transmission belt 14 on the reduction belt pulley assembly 12.

[0051] During the adjustment of the rotating roller 3, the position of the reduction pulley 13 in the reduction pulley group 12 will change, which will reduce the tension between the transmission belt 14 and the reduction pulley. At this time, the belt tensioning component 25 can automatically or manually adjust the tension of the transmission belt 14 to ensure that the transmission efficiency is not affected.

[0052] The belt tensioning assembly 25 includes: A tightening seat 26 is fixedly installed on the inner wall of the adjusting box 16. A tightening rod 27 is provided on the tightening seat 26 and is threadedly connected to the tightening seat 26. The tightening plate 7 is rotatably mounted on one side of the adjusting box 16. Both ends of the tightening plate 7 are respectively connected to the reduction wheel 13 in the reduction belt pulley group 12. The tightening plate 7 is threadedly connected to one end of the tightening rod 27.

[0053] By rotating the tensioning rod 27, the tensioning rod 27 slides on the tensioning seat 26, causing the tensioning plate 7 to rotate in the adjusting box 16, thereby adjusting the position of the reduction pulley 13 in the reduction belt pulley set 12, so that the transmission belt 14 maintains appropriate tension, ensuring that the transmission belt 14 runs stably on the reduction belt pulley set 12, avoiding slippage or loosening, and ensuring the efficient transmission of the entire transmission system.

[0054] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A special roller crushing device for tea refining, characterized in that... It includes a support frame (1), on which are provided: A separation device (2) is mounted on a support frame (1). The separation device (2) includes a pair of rotating rollers (3). The separation device (2) is used to crush tea leaves. Adjustment device (4), which is located above separation device (2) and connected to separation device (2), is used to adjust the distance between rotating rollers (3).

2. The special roller crushing device for tea refining according to claim 1, characterized in that, A hopper (5) is fixedly installed on the support frame (1). The hopper (5) is located above the separation device (2). The hopper (5) is in the shape of an inverted trapezoid. The lower end of the hopper (5) is connected to the feed end of the separation device (2).

3. The special roller crushing device for tea refining according to claim 1, characterized in that, The separation device (2) includes: Crushing box (6), the crushing box (6) is fixedly mounted on the support frame (1), and the upper surface of the crushing box (6) is fixedly connected to the hopper (5); Rotating roller (3), the rotating roller (3) is rotatably arranged in the crushing box (6) along the width direction of the crushing box (6). There is a pair of rotating rollers (3). One end of the rotating roller (3) is fixedly provided with a first roller (8) and a second roller (9). The first roller (8) and the second roller (9) are symmetrically arranged in the crushing box (6). The drive assembly (10) is located on one side of the support frame (1) and is connected to the rotating roller (3). The drive assembly (10) is used to drive the crushing roller to rotate inside the crushing box (6).

4. The special roller crushing device for tea refining according to claim 3, characterized in that, The driving component (10) includes: A drive motor (11) is fixedly mounted on a support frame (1); A reduction belt pulley assembly (12) is rotatably mounted above a support frame (1). The reduction pulleys (13) in the reduction belt pulley assembly (12) are respectively connected to the rotating roller (3). The reduction belt pulley assembly (12) is connected to the output end of a drive motor (11). A drive belt (14) is disposed on the wheel surface of a reduction belt pulley assembly (12). The drive belt (14) is used to drive the reduction pulley (13) in the reduction belt pulley assembly (12) to rotate in a specified direction.

5. The special roller crushing device for tea refining according to claim 4, characterized in that, The gear reducer pulley assembly (12) is provided with a protective cover (15) on the outside. The protective cover (15) is fixedly mounted on the support frame (1) and is connected through the drive motor (11).

6. The special roller crushing device for tea refining according to claim 1, characterized in that, The regulating device (4) includes: The regulating box (16) is located between the crushing box (6) and the protective cover (15). The regulating box (16) is fixedly mounted on the support frame (1). A sliding groove (17) is provided on the side wall of the regulating box (16). The sliding groove (17) is slidably connected to the second rotating roller (3). Support base (18), the support base (18) is disposed above the rotating roller (3) connected to the second roller (9), the support base (18) and the rotating roller (3) are pressed together; An adjusting screw (19) is provided on a support base (18) along the width direction of the support frame (1). One end of the adjusting screw (19) is threadedly connected to the support base (18). The adjusting screw (19) is connected through the adjusting box (16). A hand crank (20) is fixedly provided on one end of the adjusting screw (19).

7. The special roller crushing device for tea refining according to claim 6, characterized in that, The regulating box (16) is fixedly provided with a support plate (21), which is located below the rotating roller (3). A rotating block (22) is rotatably provided at one end of the support plate (21). One end of the rotating block (22) is arc-shaped, and the rotating block (22) is in contact with the outer surface of the rotating roller (3).

8. The special roller crushing device for tea refining according to claim 6, characterized in that, A fixing plate (23) is fixedly installed inside the adjusting box (16), and a spring (24) is fixedly installed on the surface of the fixing plate (23). The spring (24) is fixedly installed on the adjusting screw (19).

9. The special roller crushing device for tea refining according to claim 5, characterized in that, The protective cover (15) is provided with a belt tightening assembly (25), which is used to tighten the transmission belt (14) on the reduction belt pulley assembly (12).

10. A special roller crushing device for tea refining according to claim 9, characterized in that, The belt tensioning assembly (25) includes: A tightening seat (26) is fixedly installed on the inner wall of the adjusting box (16). A tightening rod (27) is provided on the tightening seat (26), and the tightening rod (27) is threadedly connected to the tightening seat (26). The tightening plate (7) is rotatably mounted on one side of the adjusting box (16). The two ends of the tightening plate (7) are respectively connected to the reduction wheel (13) in the reduction belt pulley group (12). The tightening plate (7) is threadedly connected to one end of the tightening rod (27).