Automatic grading and screening machine for white tea in loose form

By using a rocker arm to drive the feeding paddle and bolts to fix the filter plates, combined with a vibrating motor and electromagnet, the problems of inaccurate feeding speed control and inconvenient filter plate replacement in tea screening machines are solved. This enables precise grading of tea and removal of impurities, improving tea screening efficiency and quality.

CN224358910UActive Publication Date: 2026-06-16宁德市大婆茶业有限公司

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
宁德市大婆茶业有限公司
Filing Date
2025-08-30
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

Existing tea sieving machines are not precise in controlling the feeding speed and cannot quickly replace filter plates to meet the sieving needs of different grades of tea.

Method used

The tea leaves are precisely controlled by a rocker arm-driven paddle feeder. The filter plate is fixed in the limiting groove with bolts and can be quickly disassembled and assembled. Combined with a vibrating motor and an electromagnet to attract iron filings, the tea leaves are accurately graded and impurities are removed.

🎯Benefits of technology

It enables precise control of tea feeding and rapid filter plate replacement, improving the efficiency and quality of tea screening and simplifying the impurity cleaning process.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224358910U_ABST
    Figure CN224358910U_ABST
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Abstract

The utility model belongs to the field of tea processing, concretely is a kind of white tea loose tea automatic grading screening machine, including screening machine body, screening board is inlaid in the screening machine body, limit slot is opened in the surface of screening board, limit slot is equidistantly distributed, filter plate is fixed in the inner chamber of limit slot by bolt;Vibration motor is installed in the bottom surface of screening machine body;Feeding cover is installed in the end of screening machine body, and the bottom rotatably of feeding cover is equipped with discharging rotary paddle;Electromagnet is installed in one side of the bottom of feeding cover, and the surface of electromagnet is movably equipped with scraper, and the side wall of screening machine body is equipped with discharge port;The present application can drive discharging rotary paddle by rocker arm, and manually control discharging rotary paddle to rotate, so that the discharging of tea is more accurate, and the filter plate is fixed in the limit slot on the surface of screening board by bolt, so that the filter plate can be quickly disassembled, to meet the screening of tea of different grades when using.
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Description

Technical Field

[0001] This utility model relates to the field of tea processing, specifically to an automatic grading and screening machine for loose white tea. Background Technology

[0002] Tea sieving is a crucial step in tea processing, primarily aimed at removing impurities and debris to maintain tea quality and enhance its visual appeal. Below are the specific methods and precautions for tea sieving: Common equipment: Tea sieving machine (such as the CFJ-II model), which uses an electric motor to drive a rotating tray, with the sieve disc rotating with the tray to complete the sieving process. Operating steps: Weigh the sample and pour it into a standard test sieve. Set the rotation speed and start the equipment. After sieving, weigh the material passing through the sieve to calculate the powder and broken tea content.

[0003] In existing screening machines, the tea leaves inside the feed hood fall onto the screen plate under gravity. The feeding speed of the tea leaves cannot be precisely controlled, and excessive feeding can easily lead to incomplete screening. Furthermore, when screening different grades of tea leaves, it is not possible to quickly change the filter plate according to the grade of the tea leaves, which is very inconvenient to use. In order to solve the above problems, this application proposes an automatic grading and screening machine for loose white tea. Utility Model Content

[0004] (I) Purpose of the utility model

[0005] To address the technical problems existing in the background art, this utility model proposes an automatic grading and screening machine for loose white tea. The machine uses a rocker arm to drive the feeding paddle, which can be manually controlled to rotate, making the feeding of tea leaves more precise. The filter plate is fixed in the limiting groove on the surface of the screening plate with bolts, which can facilitate quick disassembly and assembly of the filter plate, so as to meet the screening of different grades of tea leaves during use, thereby solving the problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To solve the above technical problems, this utility model provides an automatic grading and screening machine for loose white tea, including a screening machine body, a screening plate embedded in the screening machine body, a limiting groove formed on the surface of the screening plate, the limiting grooves being evenly distributed, and a filter plate being fixed to the inner cavity of the limiting groove by bolts;

[0008] A vibration motor is installed on the bottom surface of the screening machine body;

[0009] The end of the screening machine body is equipped with a feed hood, and a feeding paddle is rotatably provided at the bottom of the inner cavity of the feed hood;

[0010] An electromagnet is installed on one side of the bottom of the feed hood, and a scraper is movably provided on the surface of the electromagnet.

[0011] Preferably, the side wall of the screening machine is provided with a discharge port, and the position of the discharge port corresponds to the position of the filter plate.

[0012] Preferably, the bottom of the inner cavity of the feed hood is symmetrically provided with guide plates, which are located on both sides of the feed rotor.

[0013] Preferably, the bottom of the inner cavity of the screening machine is provided with a discharge inclined plate, which is located below the screening plate.

[0014] Preferably, a cleaning rod is installed at the bottom of the scraper, and the end of the cleaning rod penetrates the wall of the screening machine cavity.

[0015] Preferably, a slot is provided below the cleaning rod, and a slag storage box is movably inserted into the inner cavity of the slot.

[0016] Preferably, the end of the rotating shaft of the feeding impeller penetrates the cavity wall of the screening machine, and a rocker arm is installed at the end of the rotating shaft of the feeding impeller.

[0017] The above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0018] 1. This utility model uses a rocker arm to drive the feeding paddle, which can be manually controlled to rotate, making the feeding of tea leaves more precise. The filter plate is fixed in the limiting groove on the surface of the screening plate by bolts, which can facilitate quick disassembly and assembly of the filter plate so as to meet the screening of different grades of tea leaves during use.

[0019] 2. In this utility model, when the tea leaves move on the sieving plate, the electromagnet is energized and generates magnetism, which can attract iron filings in the tea leaves. The slag storage box is inserted into the insertion slot. After the electromagnet is de-energized, the attracted iron filings fall into the slag storage box. The cleaning lever pushes the scraper to move, and the surface of the electromagnet can be quickly cleaned by the scraper. The slag storage box is inserted and fixed below the electromagnet into the insertion slot, which can facilitate the cleaning of the slag storage box. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an automatic grading and screening machine for loose white tea according to this utility model;

[0021] Figure 2 This is a longitudinal cross-sectional structural diagram of an automatic grading and screening machine for loose white tea according to the present invention.

[0022] Figure 3 This is a cross-sectional structural diagram of an automatic grading and screening machine for loose white tea according to the present invention.

[0023] Figure 4 This is a schematic diagram of the cleaning structure of an automatic grading and screening machine for loose white tea according to this utility model;

[0024] Figure 5 This is a schematic diagram of the sieving plate structure of an automatic grading and screening machine for loose white tea according to this utility model.

[0025] Figure label:

[0026] 1. Screening machine body; 2. Feed hood; 3. Screening plate; 4. Discharge port; 5. Limiting groove; 6. Filter plate; 7. Vibrating motor; 8. Discharge inclined plate; 9. Feeding rotor; 10. Guide inclined plate; 11. Rocker arm; 12. Electromagnet; 13. Scraper; 14. Cleaning rod; 15. Slag storage box. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0028] like Figure 1-5 As shown, the present invention proposes an automatic grading and screening machine for loose white tea, including a screening machine body 1, a screening plate 3 embedded in the screening machine body 1, a limiting groove 5 opened on the surface of the screening plate 3, the limiting groove 5 being evenly distributed, and a filter plate 6 being fixed in the inner cavity of the limiting groove 5 by bolts.

[0029] A vibration motor 7 is installed on the bottom surface of the screening machine body 1;

[0030] The screening machine body 1 is equipped with a feed hood 2 at one end, and a feeding paddle 9 is rotatably provided at the bottom of the inner cavity of the feed hood 2.

[0031] It should be noted that when white tea leaves are placed in the feed hood 2, the feeding paddle 9 is rotated by the rocker arm 11. The feeding speed of the white tea leaves is controlled by the feeding paddle 9, so that the white tea leaves fall evenly onto the surface of the screening plate 3 during feeding. The vibrating motor 7 generates high-frequency vibration during operation, and the tea leaves move at the lowest point of the screening plate 3 under the action of vibration. During the movement, the tea leaves can be graded and screened by the filter plate 6. The screened tea leaves fall onto the discharge inclined plate 8, which is equipped with a partition plate. The partition plate is aligned with the discharge port 4, so the screened tea leaves can be discharged sequentially through the discharge port 4. The mesh size on the filter plate 6 increases sequentially from the feed end to the tail end. The filter plate 6 is fixed in the limiting groove 5 on the surface of the screening plate 3 by bolts, which can facilitate quick disassembly and assembly of the filter plate 6 so as to meet the screening of different grades of tea leaves during use.

[0032] In this embodiment, as Figure 3As shown, the side wall of the screening machine body 1 is provided with a discharge port 4, and the position of the discharge port 4 corresponds to the position of the filter plate 6.

[0033] In this embodiment, as Figure 2 As shown, the bottom of the inner cavity of the feed hood 2 is symmetrically provided with guide plates 10, which are located on both sides of the feed rotor 9.

[0034] It should be noted that the guide plate 10 can guide the tea leaves inside the feed hood 2.

[0035] In this embodiment, as Figure 2 As shown, the bottom of the inner cavity of the screening machine body 1 is provided with a discharge inclined plate 8, which is located below the screening plate 3.

[0036] It should be noted that the discharge ramp 8 can guide the screened tea leaves, allowing them to be discharged quickly.

[0037] In this embodiment, as Figure 4 As shown, an electromagnet 12 is installed on one side of the bottom of the feed hood 2. A scraper 13 is movably provided on the surface of the electromagnet 12. A cleaning rod 14 is installed at the bottom of the scraper 13. The end of the cleaning rod 14 penetrates the cavity wall of the screening machine body 1. An insertion groove is provided below the cleaning rod 14. A slag storage box 15 is movably inserted into the cavity of the insertion groove.

[0038] It should be noted that when the tea leaves move on the sieve plate 3, the electromagnet 12 is energized and generates magnetism, which can attract iron filings in the tea leaves. The slag storage box 15 is inserted into the insertion slot. After the electromagnet 12 is de-energized, the attracted iron filings fall into the slag storage box 15. The scraper 13 is moved by the cleaning rod 14, and the surface of the electromagnet 12 can be quickly cleaned by the scraper 13. The slag storage box 15 is inserted and fixed below the electromagnet 12, which can facilitate the cleaning of the slag storage box 15.

[0039] In this embodiment, as Figure 1 As shown, the end of the rotating shaft of the feeding paddle 9 penetrates the cavity wall of the screening machine body 1, and a rocker arm 11 is installed at the end of the rotating shaft of the feeding paddle 9.

[0040] It should be noted that the rocker arm 11 can drive the feeding rotor 9, and the feeding rotor 9 can be manually controlled to rotate, making the feeding of tea leaves more precise.

[0041] The working principle and usage process of this utility model are as follows: White tea leaves are placed into the feeding hood 2. The rocker arm 11 drives the feeding paddle 9 to rotate, controlling the feeding speed of the white tea leaves. During feeding, the white tea leaves fall evenly onto the surface of the sieve plate 3. The vibrating motor 7 generates high-frequency vibration during operation, causing the tea leaves to move at the lowest point of the sieve plate 3. During this movement, the tea leaves are graded and sieved through the filter plate 6. The sieved tea leaves fall onto the discharge inclined plate 8, which is equipped with a partition plate. The partition plate corresponds to the position of the discharge port 4, allowing the sieved tea leaves to be discharged sequentially through the discharge port 4. The mesh of the filter plate 6... The filter plate 6 is fixed to the limiting groove 5 on the surface of the screening plate 3 by bolts, which can be quickly disassembled and assembled to meet the screening of different grades of tea. When the tea moves on the screening plate 3, the electromagnet 12 is energized and generates magnetism, which can attract iron filings in the tea. The slag storage box 15 is inserted into the insertion groove. After the electromagnet 12 is de-energized, the iron filings attracted fall into the slag storage box 15. The scraper 13 is moved by the cleaning pull rod 14, which can quickly clean the surface of the electromagnet 12. The slag storage box 15 is inserted and fixed below the electromagnet 12, which can be easily cleaned.

[0042] It should be understood that the above-described specific embodiments of this utility model are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within the protection scope of this utility model. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims or their equivalents.

Claims

1. An automatic grading and screening machine for loose white tea, comprising a screening body (1), characterized in that, The screening machine body (1) is equipped with a screening plate (3), and the screening plate (3) has a limiting groove (5) on its surface. The limiting groove (5) is evenly distributed, and the filter plate (6) is fixed in the inner cavity of the limiting groove (5) by bolts. A vibration motor (7) is installed on the bottom surface of the screening machine body (1); The screening machine body (1) is equipped with a feed hood (2) at the end, and a feeding paddle (9) is rotatably provided at the bottom of the inner cavity of the feed hood (2); An electromagnet (12) is installed on one side of the bottom of the feed hood (2), and a scraper (13) is movably provided on the surface of the electromagnet (12).

2. The automatic grading and sorting machine for loose white tea according to claim 1, characterized in that, The screening machine body (1) has a discharge port (4) on its side wall, and the position of the discharge port (4) corresponds to the position of the filter plate (6).

3. The automatic grading and screening machine for loose white tea according to claim 2, characterized in that, The bottom of the inner cavity of the feed hood (2) is symmetrically provided with guide plates (10), which are located on both sides of the feed rotor (9).

4. The automatic grading and screening machine for loose white tea according to claim 3, characterized in that, The bottom of the inner cavity of the screening machine body (1) is provided with a discharge inclined plate (8), which is located below the screening plate (3).

5. The automatic grading and screening machine for loose white tea according to claim 4, characterized in that, A cleaning rod (14) is installed at the bottom of the scraper (13), and the end of the cleaning rod (14) penetrates the cavity wall of the screening machine body (1).

6. The automatic grading and screening machine for loose white tea according to claim 5, characterized in that, A slot is provided below the cleaning rod (14), and a slag storage box (15) is movably inserted into the inner cavity of the slot.

7. The automatic grading and screening machine for loose white tea according to claim 6, characterized in that, The end of the rotating shaft of the feeding paddle (9) penetrates the cavity wall of the screening machine body (1), and a rocker arm (11) is installed at the end of the rotating shaft of the feeding paddle (9).