Dustproof device of tea screening machine
By combining a drum screen and an air separator, the problems of tea breakage and poor removal of light impurities in tea screening machines are solved, achieving efficient and low-loss tea screening, thus improving tea quality and yield.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGDE HONGCHUN TEA CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-05-15
AI Technical Summary
Existing tea sorting machines suffer from problems such as tea leaves being easily broken, screens being easily clogged, and poor removal of light impurities, which affect tea quality and efficiency.
It adopts a combination structure of drum screen and air classifier. The drum screen removes light impurities by gentle tumbling and multi-layer screening, while the air classifier removes light impurities by adjusting the air speed and cleans the screen holes with a brush to prevent clogging.
This technology ensures that tea leaves are less prone to breakage, achieves high sorting and dust removal efficiency, improves tea cleanliness and yield, reduces screen clogging, and enhances tea quality and production qualification rate.
Smart Images
Figure CN224237552U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tea processing technology, and in particular to a dust prevention device for a tea screening machine. Background Technology
[0002] In the tea processing process, screening is a crucial step. A tea screening machine separates sand, dust, and other impurities from the tea leaves. Its purpose is to remove impurities (such as tea stems, yellow leaves, dust, etc.) and grade the tea leaves (such as whole leaves, broken leaves, tea dust, etc.) to meet the diverse market demands for tea. Traditional screening methods involve manually shaking the filter screen, which is inefficient and affects the efficiency and quality of tea processing.
[0003] However, the existing tea sorting machine technology has the following problems: 1. Traditional sorting machines cause tea leaves to break easily, affecting quality, generate a lot of noise, cause the screen to clog easily, affecting the grade of tea leaves, and result in a low pass rate.
[0004] Traditional sorting machines are ineffective at removing light impurities (such as fuzz and dust) from tea leaves, which affects the quality and taste of the tea.
[0005] When applying for this invention, the applicant searched and found that a Chinese patent disclosed a "tea sorting machine" with application number "201621444162.5". This patent mainly uses a vibrating screener for tea sorting. The whole machine adopts a two-layer vibrating screen structure, which can not only remove impurities but also sort the tea. However, the tea leaves are easily broken by vibrating screens, the sorting and dust removal effect is low, which affects the quality (especially for high-grade teas such as buds and leaves), and the screen is easy to clog and needs to be cleaned frequently. Utility Model Content
[0006] The purpose of this utility model is to provide a dustproof device for a tea screening machine, in order to solve the problems of high losses due to easy breakage of tea leaves during screening, easy clogging of the screen, and poor removal effect of light impurities in the tea leaves in the existing tea screening machine.
[0007] To achieve the above objectives, a dustproof device for a tea sorting machine is provided, comprising a base, a support plate fixedly installed on one side of the base, and two fixing plates, namely a first fixing plate and a second fixing plate, fixedly installed on the left side of the base.
[0008] A feed pipe is fixedly installed on one side of the support plate. The feed pipe has a feed inlet. One end of the feed pipe passes through a rotary screen. A waste pipe and a discharge pipe are rotatably connected to one side of the rotary screen. A waste outlet is provided at the bottom end of the waste pipe. A screen barrel is fixedly installed on one side inside the rotary screen. The screen barrel has multiple symmetrical screen holes. An air classifier is installed through the other end of the discharge pipe. An air classifier is fixedly installed on one side of the air classifier.
[0009] According to the dustproof device of the tea sorting machine, four support columns are symmetrically fixedly installed on the fixed plate, and two motors are fixedly installed on one side of each support column.
[0010] According to the dustproof device of the tea sorting machine, the output end of the motor is fixedly connected to the rotating column through the fixing plate, and a rotating wheel is fixedly installed on the rotating column.
[0011] According to the dust prevention device of the tea sorting machine, a limiting column is fixedly installed on one side of the support column, and the limiting column is rotatably installed on the rotating column.
[0012] According to the dustproof device of the tea screening machine, four support columns are symmetrically fixedly installed on the fixed plate 2, and two motors are fixedly installed on one side of the support columns 2.
[0013] According to the dustproof device of the tea screening machine, the output end of the motor 2 is fixedly connected to the rotating column 2 through the fixing plate 2, and the rotating wheel 2 is fixedly installed on the rotating column 2.
[0014] According to the dustproof device of the tea screening machine, a limiting column is fixedly installed on one side of the support column (19), and the limiting column is rotatably installed on the rotating column.
[0015] According to the dustproof device of the tea sorting machine, a slot is provided on the other side of the air separator box, a spring is fixedly installed at the bottom of the slot, and a filter screen is inserted into the slot.
[0016] The above-mentioned solution has the following beneficial effects:
[0017] 1. This patent, through the setting of a drum screen and the internal screen barrel and the opening of the screen holes, achieves tea leaves that are not easily broken, have a high sorting and dust removal effect, improve the efficiency and low loss rate of tea leaves, and the screen is not easily blocked by the mechanism of gentle tumbling and multi-layer screening during use.
[0018] 2. This patent, by setting up an air separator box and an air separator, allows for the effective removal of light impurities such as dust, dust, and fuzz from tea leaves by adjusting the air speed of the air separator during use, thereby improving the cleanliness of the tea leaves.
[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments;
[0021] Figure 1 This is an overall view of the dustproof device for a tea sorting machine according to this utility model;
[0022] Figure 2 This is a schematic diagram of the rotating column of the dustproof device for a tea sorting machine according to the present invention;
[0023] Figure 3 This is a cross-sectional view of the drum screen of a dustproof device for a tea sorting machine according to the present invention;
[0024] Figure 4 This is a cross-sectional view of the air separator box of the dustproof device for a tea sorting machine according to this utility model.
[0025] Legend:
[0026] 1. Base; 2. Support plate; 3. Feed pipe; 4. Feed inlet; 5. Rotary drum screen; 6. Waste pipe; 7. Discharge pipe; 8. Waste outlet; 9. Air separator box; 10. Air separator; 11. Fixed plate one; 12. Motor one; 13. Support column one; 14. Rotating wheel one; 15. Limiting column one; 16. Rotating column one; 17. Fixed plate two; 18. Motor two; 19. Support column two; 20. Limiting column two; 21. Rotating wheel two; 22. Rotating column two; 23. Screen barrel; 24. Screen hole; 25. Filter screen; 26. Spring. Detailed Implementation
[0027] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0028] Reference Figure 1-4This utility model discloses a dustproof device for a tea screening machine, comprising a base 1, a support plate 2 fixedly installed on one side of the base 1, and two fixing plates 11 and 17 fixedly installed on the left side of the base 1; a feed pipe 3 fixedly installed on one side of the support plate 2, the feed pipe 3 having a feed inlet 4, one end of the feed pipe 3 passing through a drum screen 5, one side of the drum screen 5 being rotatably connected to a waste pipe 6 and a discharge pipe 7, the bottom end of the waste pipe 6 having a waste outlet 8, a screen barrel 23 fixedly installed on one side inside the drum screen 5, the screen barrel 23 having multiple symmetrical screen holes 24, the other end of the discharge pipe 7 passing through an air separator 9, and an air separator 10 fixedly installed on one side of the air separator 9; through the feed pipe 3, the feed inlet 4, and the drum screen 5, the drum screen 5 is placed at an incline on a rotatable cylinder. The drum screen 5 has a screen barrel 23 fixedly installed inside. The screen barrel 23 has screen holes 24 of different sizes. These screen holes 24 are arranged in descending order of size according to the needs of tea screening. When the drum screen 5 rotates, the tea leaves tumble and move inside the drum as the drum rotates. Under the combined action of gravity and centrifugal force, the tea leaves come into full contact with the screen holes 24. Smaller tea leaves or fragments can pass through the screen holes 24 of the corresponding size and fall into the corresponding waste pipe 6 below. Larger tea leaves continue to roll inside the drum until they reach the screen hole 24 of the appropriate size and fall into the corresponding discharge pipe 7. To prevent the tea leaves from accumulating on the surface of the screen holes 24 and clogging the screen holes 24, thus affecting the screening efficiency.
[0029] The drum screen 5 is usually equipped with a cleaning device, such as a brush installed inside the drum. As the drum rotates, the brush continuously cleans the surface of the screen holes 24, brushing off the tea leaves adhering to the screen holes 24, keeping the screen holes 24 unobstructed, and ensuring the continuous operation of the screening process.
[0030] A screen barrel 23 is fixedly installed on one side of the inside of the drum screen 5. The screen barrel 23 has multiple symmetrical screen holes 24. Through the setting of the screen barrel 23 and the screen holes 24, these screen holes 24 are arranged in order from large to small according to the needs of tea screening. When the drum screen 5 rotates, the tea leaves tumble and move inside the drum as the drum rotates. Under the combined action of gravity and centrifugal force, the tea leaves are sorted. An air separator box 9 is installed through the other end of the discharge pipe 7. An air separator 10 is fixedly installed on one side of the air separator box 9. By adjusting the air speed, the air separator 10 can effectively remove light impurities such as dust, dust, and fuzz from the tea leaves, thereby improving the cleanliness of the tea leaves.
[0031] Four support columns 13 are symmetrically fixedly installed on the fixed plate 11. Two motors 12 are fixedly installed on one side of each support column 13. The output end of each motor 12 passes through the fixed plate 11 and is fixedly connected to a rotating column 16. A rotating wheel 14 is fixedly installed on the rotating column 16. A limit column 15 is fixedly installed on one side of each support column 13, and the limit column 15 is rotatably mounted on the rotating column 16. Four support columns 29 are symmetrically fixedly installed on the fixed plate 17. Two motors 28 are fixedly installed on one side of each support column 29. The output end of each motor 28 passes through the fixed plate 17 and is fixedly connected to a rotating column 22. A rotating wheel 21 is fixedly installed on the rotating column 22. A limit column 20 is fixedly installed on one side of each support column 29, and the limit column 20 is rotatably mounted on the rotating column 21. Mounted on rotating column 22; by setting fixed plates 11 and 17, support columns 13 and 19, limit columns 15 and 20, rotating columns 16 and 22, motor 12 and 18, and rotating wheels 14 and 21, when motor 12 and 18 start simultaneously, driving the fixedly mounted rotating columns 16 and 22 to rotate, the rotating wheels 14 and 21 also rotate. At this time, the drum screen 5, movably mounted on limit columns 15 and 20, also rotates due to the rotation of the rotating wheels 14 and 21, causing the drum screen 5 to rotate and sift and clean the tea leaves. A slot is provided on the other side of the air separator 9, with a spring 26 fixedly installed at the bottom of the slot, and a filter screen 25 inserted into the slot.
[0032] Working principle: In operation, tea leaves are first fed into the feed pipe 3 through the feed inlet 4, and then flow into the inside of the drum screen 5. Simultaneously, motors 12 and 18 are started, driving rotating columns 16 and 22, which are fixedly connected to the output ends of motors 12 and 18, to rotate in a circular motion. Rotating wheels 14 and 21, fixedly mounted on rotating columns 16 and 22, also rotate in a circular motion. At this time, the movably mounted on limiting columns 15 and 20... The drum screen 5 is rotated by the circular motion of rotating wheel 14 and rotating wheel 21, and also rotates through mutual friction, causing the drum screen 5 to rotate and screen the tea leaves. The qualified tea leaves enter the air separator 9 through the discharge pipe 7. Then the air separator 10 is started to remove dust from the tea leaves for a second time. By adjusting the wind speed, light impurities such as dust, fragments, and fuzz in the tea leaves can be effectively removed, improving the cleanliness of the tea leaves. The unqualified tea leaves screened in the drum screen 5 enter the waste pipe 6 and are discharged from the waste outlet 8.
[0033] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A dustproof device for a tea sorting machine, comprising a base (1), characterized in that, A support plate (2) is fixedly installed on one side of the base (1), and two fixing plates (11) and (17) are fixedly installed on the left side of the base (1). A feed pipe (3) is fixedly installed on one side of the support plate (2). A feed inlet (4) is provided on the feed pipe (3). A drum screen (5) passes through one end of the feed pipe (3). A waste pipe (6) and a discharge pipe (7) are rotatably connected on one side of the drum screen (5). A waste outlet (8) is provided at the bottom end of the waste pipe (6). A screen barrel (23) is fixedly installed on one side inside the drum screen (5). A plurality of symmetrical screen holes (24) are opened on the screen barrel (23). An air separator (9) passes through the other end of the discharge pipe (7). An air separator (10) is fixedly installed on one side of the air separator (9).
2. The dust prevention device for a tea sorting machine according to claim 1, characterized in that, Four support columns (13) are symmetrically fixedly installed on the fixed plate (11), and two motors (12) are fixedly installed on one side of the support columns (13).
3. The dustproof device for a tea sorting machine according to claim 2, characterized in that, The output end of the motor (12) is fixedly connected to the rotating column (16) through the fixing plate (11), and a rotating wheel (14) is fixedly installed on the rotating column (16).
4. The dust prevention device for a tea sorting machine according to claim 2, characterized in that, A limiting column (15) is fixedly installed on one side of the support column (13), and the limiting column (15) is rotatably installed on the rotating column (16).
5. The dustproof device for a tea sorting machine according to claim 1, characterized in that, Four support columns (19) are symmetrically fixedly installed on the fixed plate (17), and two motors (18) are fixedly installed on one side of the support columns (19).
6. The dust prevention device for a tea sorting machine according to claim 5, characterized in that, The output end of the motor (18) is fixedly connected to the rotating column (22) through the fixing plate (17), and the rotating wheel (21) is fixedly installed on the rotating column (22).
7. The dust prevention device for a tea sorting machine according to claim 5, characterized in that, One side of the support column 2 (19) is fixedly installed with a limiting column 2 (20), and the limiting column 2 (20) is rotatably installed on the rotating column 2 (22).
8. The dustproof device for a tea sorting machine according to claim 1, characterized in that, A slot is provided on the other side of the air separator (9), a spring (26) is fixedly installed at the bottom of the slot, and a filter screen (25) is inserted into the slot.