A grading and screening device for tea production and processing
By using a fan-driven and inclined plate-shielded tea grading and screening device, the problems of clogging and scattering in tea grading and screening devices have been solved, achieving efficient and accurate tea grading and screening.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HAIFENG COUNTY RENRONG IND DEV CO LTD RENRONG TEA IND
- Filing Date
- 2025-07-31
- Publication Date
- 2026-06-30
AI Technical Summary
Existing tea grading and screening devices are prone to clogging, tea leaves scatter, and lack effective shielding structures, resulting in low screening efficiency and tea mixing.
The tea leaves are sieved by a blower, and the tea leaves are prevented from scattering by inclined plates and limiting curtains. Multi-stage sieving is carried out in combination with zoned and segmented bearing plates.
It achieves efficient tea sieving, avoids clogging of the sieving device and tea scattering, and improves sieving efficiency and the accuracy of tea grading.
Smart Images
Figure CN224423522U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of tea production and processing technology, and in particular relates to a grading and screening device for tea production and processing. Background Technology
[0002] In the long journey of tea from fresh leaves to a cup, grading and sorting are among the core processes that determine the final product's quality, value, and market positioning. As an important piece of machinery in modern tea processing production lines, tea grading and sorting equipment plays a crucial role, directly affecting the tea's appearance, taste uniformity, aroma purity, and final selling price.
[0003] Existing screening devices mostly use multi-layer sieves to screen tea leaves during grading. However, when using sieves, tea leaves easily clog the mesh, reducing screening efficiency. Existing devices lack effective shielding structures, allowing tea leaves to spread randomly due to wind, requiring manual intervention. Furthermore, the lack of zoned areas leads to mixing of tea leaves of different grades. Therefore, we provide a grading and screening device for tea production and processing to solve the above problems. Utility Model Content
[0004] The purpose of this utility model is to provide a grading and screening device for tea production and processing. The device uses a blower to directly blow the tea leaves to screen them, while using an inclined plate to shield the tea leaves and prevent them from scattering in the screening opening during the screening process.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0006] This utility model is a grading and screening device for tea production and processing, including a screening box; a screening port is opened through the front end of the screening box, a support plate is set at the bottom of the screening port, and limit curtains are set at the front and rear parts above the support plate. Two sets of inclined plates are set between the two sets of limit curtains and are arranged in a front-to-back inclined manner. A progress box is set directly above the outside of the screening box. The progress box has a progress screw with both ends rotatably connected to the progress box. A ventilation port is opened on the left side wall of the screening box and communicates with the inside of the screening port. An air duct is inserted into the air duct and a fan is installed inside the air duct.
[0007] The present invention is further configured such that a region strip is fixed on the upper surface of the bearing plate, and the upper surface of the bearing plate is divided into multiple spatial regions by the region strip.
[0008] The present invention is further configured such that the upper end surfaces of the two sets of inclined plates are each fixed with a locking strip that is bolted to the top surface of the screening port, and the upper end of the limiting curtain is each fixed with an L-shaped strip that is bolted to the side wall of the screening box.
[0009] The present invention is further configured such that an installation port communicating with the interior of the ventilation opening is provided on the left side wall of the screening box, and an annular plate located in the installation port is fixed on the left end face of the air duct, and the annular plate is fixed in the installation port by bolts.
[0010] The present invention is further configured such that a converging port communicating with the inside of the screening port is opened on the upper end face of the screening box, and a drop pipe is fixed on the lower part of the surface of the delivery box corresponding to the position of the converging port.
[0011] The present invention is further configured such that a motor is fixed on the outer end face of the feed box near the feed pipe, and the motor is connected to the shaft end of the feed screw for transmission.
[0012] This utility model has the following beneficial effects:
[0013] 1. In this utility model, after the tea leaves enter the sieving port, the wind generated by the blower during operation will blow the tea leaves into the sieving port. The larger and heavier tea leaves are blown a shorter distance by the wind, while the smaller and lighter tea leaves are blown a longer distance by the wind, thus achieving the sieving process of the tea leaves.
[0014] 2. In this utility model, tea leaves fall onto the inclined plate and slide down onto the support plate. The distance between the two lower ends of the two sets of inclined plates is less than the distance between the two upper ends. Therefore, the two sets of inclined plates block the tea leaves above the support plate, so that the tea leaves will not scatter inside the sieving port even under the action of wind. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.
[0016] Figure 1 This is a schematic diagram of the structure of this utility model.
[0017] Figure 2 This is a cross-sectional view of the overall structure of this utility model.
[0018] Figure 3 This is a cross-sectional view of the screening box and the conveying box in this utility model.
[0019] Figure 4 This is a structural diagram of the limiting curtain and the inclined plate in this utility model.
[0020] Figure 5This is a structural diagram of the carrier plate in this utility model.
[0021] The attached diagram lists the components represented by each number as follows:
[0022] 1-Screwing box, 101-Converging port, 102-Screwing port, 103-Ventilation port, 104-Installation port, 2-Progression box, 201-Feed pipe, 202-Progression screw, 203-Motor, 204-Drop pipe, 3-Bearing plate, 301-Area strip, 4-Air duct, 401-Ring plate, 402-Fan, 5-Limiting curtain, 501-L-shaped strip, 6-Inclined plate, 601-Locking strip. Detailed Implementation
[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0024] Example 1
[0025] Please see Figures 1 to 5 This utility model is a grading and screening device for tea production and processing. The fan 402 blows the tea directly to screen the tea. At the same time, the inclined plate 6 is used to shield the tea to prevent the tea from flying around in the screening port 102 during the screening process.
[0026] Specifically, the screening box 1 has a screening port 102 through the front end face. A support plate 3 is provided at the bottom of the screening port 102. Limiting curtains 5 are provided at the front and rear positions above the support plate 3. Two sets of inclined plates 6 are provided between the two sets of limiting curtains 5. A progress box 2 is provided directly above the outside of the screening box 1. A progress screw 202 with both ends rotatably connected to the progress box 2 is provided inside the progress box 2. A ventilation port 103 is provided on the left side wall of the screening box 1 and communicates with the inside of the screening port 102. An air duct 4 is inserted into the air duct 103 and a fan 402 is installed inside the air duct 4.
[0027] The operation process of this embodiment is as follows: Using the above-described structure, the blower 402 is controlled to operate. The airflow generated by the blower 402 is blown into the sieve opening 102. After the tea leaves enter the sieve opening 102, the airflow generated by the blower 402 will agitate the tea leaves inside the sieve opening 102. Larger and heavier tea leaves are blown a shorter distance, while smaller and lighter tea leaves are blown a longer distance, thus achieving the sieving process. The inclined plate 6 is located at the sieve opening 102. In section 02, after the tea leaves fall downwards, they will fall onto the inclined plate 6 and slide from the inclined plate 6 into the carrying plate 3. The distance between the two lower ends of the two sets of inclined plates 6 is less than the distance between the two upper ends. Therefore, the two sets of inclined plates 6 block the tea leaves above the carrying plate 3, so that the tea leaves will not scatter inside the screening port 102 even under the action of wind. At the same time, when the screened tea leaves are taken out, the limiting curtain 5 can be lifted up and the carrying plate 3 can be taken out directly from inside the screening box 1, so that the screened tea leaves can be sorted.
[0028] Example 2
[0029] Please see Figure 4 and Figure 5 Based on Example 1, the tea leaves are processed in multiple stages by installing the area strips 301 on the carrier plate 3.
[0030] Specifically, the upper end face of the bearing plate 3 is fixed with a zone strip 301, and the upper end face of the bearing plate 3 is divided into multiple spatial zones by the zone strip 301. The upper end faces of the two sets of inclined plates 6 are fixed with locking strips 601 that are bolted to the top surface of the screening port 102. The upper end of the limiting curtain 5 is fixed with L-shaped strips 501 that are bolted to the side wall of the screening box 1. The left side wall of the screening box 1 is provided with an installation port 104 that communicates with the interior of the ventilation port 103. The left end face of the air duct 4 is fixed with a ring plate 401 located in the installation port 104. The ring plate 401 is fixed in the installation port 104 by bolts.
[0031] The operation process of this embodiment is as follows: By setting and using the above structure, the area strip 301 is installed on the support plate 3. The area strip 301 divides the upper end of the support plate 3 into multiple spaces. Therefore, after the tea leaves fall into the support plate 3, the area strip 301 performs multi-stage screening of the tea leaves. At the same time, the use of the locking strip 601, the L-shaped strip 501 and the ring plate 401 allows the inclined plate 6, the limiting link and the ring plate 401 to be disassembled on the screening box 1.
[0032] Example 3
[0033] Please see Figure 2 and Figure 3Based on Example 1, the rotation of the advance screw 202 is controlled by the motor 203, thereby realizing automatic control of the tea leaves to move.
[0034] Specifically, the upper end face of the screening box 1 is provided with a converging port 101 that communicates with the inside of the screening port 102. The lower part of the surface of the feed box 2 is fixed with a drop pipe 204 corresponding to the position of the converging port 101. The outer end face of the feed box 2 near the feed pipe 201 is fixed with a motor 203, and the motor 203 is connected to the shaft end of the feed screw 202.
[0035] The operation process of this embodiment is as follows: By setting and using the above structure, the motor 203 is controlled to work, so that the motor 203 will push the tea leaves inside the delivery box 2 to rotate and move inside the delivery box 2, and push the tea leaves to the position of the drop pipe 204. Thus, the tea leaves enter the collection port 101 in the drop pipe 204 and enter the internal position of the sieving port 102. The motor 203 controls the rotation of the delivery screw 202, thereby realizing the automatic movement of the tea leaves.
[0036] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
Claims
1. A grading and screening device for tea leaf production and processing, comprising a screening box (1); characterized in that: The screening box (1) has a screening port (102) through the front end face. A support plate (3) is provided at the bottom of the screening port (102). Limiting curtains (5) are provided at the front and rear parts above the support plate (3). Two sets of inclined plates (6) are provided between the two sets of limiting curtains (5). A progress box (2) is provided directly above the outside of the screening box (1). A progress screw (202) is provided inside the progress box (2) with both ends rotatably connected to the progress box (2). A ventilation port (103) is provided on the left side wall of the screening box (1) and communicates with the inside of the screening port (102). A duct (4) is inserted into the duct (103). A fan (402) is installed inside the duct (4).
2. The grading and screening device for tea production and processing according to claim 1, characterized in that, The upper surface of the bearing plate (3) is fixed with a region strip (301), and the upper surface of the bearing plate (3) is divided into multiple spatial regions by the region strip (301).
3. The grading and screening device for tea production and processing according to claim 1, characterized in that, Both sets of inclined plates (6) are fixed with locking strips (601) that are bolted to the top surface of the screening port (102), and the upper end of the limiting curtain (5) is fixed with L-shaped strips (501) that are bolted to the side wall of the screening box (1).
4. The grading and screening device for tea production and processing according to claim 1, characterized in that, The left side wall of the screening box (1) is provided with an installation port (104) that communicates with the interior of the ventilation port (103). The left end face of the air duct (4) is fixed with a ring plate (401) in the installation port (104). The ring plate (401) is fixed in the installation port (104) by bolts.
5. A grading and screening device for tea production and processing according to claim 1, characterized in that, The upper end face of the screening box (1) is provided with a converging port (101) that communicates with the inside of the screening port (102), and a drop pipe (204) is fixed on the lower part of the surface of the delivery box (2) at the position corresponding to the converging port (101).
6. A grading and screening device for tea production and processing according to claim 5, characterized in that, A motor (203) is fixed to the outer end face of the feed box (2) near the feed pipe (201), and the motor (203) is connected to the shaft end of the feed screw (202) for transmission.