Tea classifying and screening device

Abstract

The utility model relates to the field of tea grading, in particular to a tea grading and screening device which comprises a screening plate with screening holes and a blocking plate with yielding holes, and a regulating and controlling mechanism used for driving the blocking plate to move is installed on the screening plate. Compared with the prior art, the screening device has the advantages that the screening plate is improved, the blocking plate is additionally arranged below the screening plate, the avoiding holes corresponding to the screening holes in the screening plate are formed in the blocking plate, and the blocking degree of the screening holes is changed by moving the blocking plate below the screening plate; in this way, the size of the falling space reserved by the sieve holes for the tea leaves is changed, and the application range of tea leaf grading is widened.

Description

Technical Field

[0001] This utility model relates to the field of tea grading, specifically to a tea grading and screening device. Background Technology

[0002] After drying, tea leaves are graded according to quality. Different grades of tea leaves are separated based on parameters such as size and color, resulting in differences not only in the quality of the brewed tea but also in the price.

[0003] Tea leaves are graded according to size. There are usually special grading machines. The grading machine puts the tea leaves on a sieve or sieve plate and uses a vibrating motor to make the tea leaves on the sieve vibrate. Sometimes it is also equipped with a fan to provide airflow, so that small tea leaves can pass through the sieve holes while large tea leaves are blocked, thus achieving the separation effect. This kind of equipment is also commonly used in other fields, such as fruits.

[0004] A type of tea is rarely simply divided into two grades. For example, some manufacturers will sort tea produced in the same batch and label it as "special supply", "premium grade", "grade 1" and "primary grade". When sieving tea, a sieve plate with fixed mesh size cannot meet the needs of this relatively multi-level sieving work. Many sieves or sieve plates with different mesh sizes must be prepared, which will undoubtedly increase production costs and labor intensity. Therefore, a tea grading and screening device is provided. Utility Model Content

[0005] I. Technical problems to be solved

[0006] The technical problem this invention aims to solve is that the aperture of the screens and screen plates in the sorting machine cannot be changed, and a single screen plate can often only meet one grading requirement.

[0007] II. Technical Solution

[0008] To solve the above-mentioned technical problems, the technical solution provided by this utility model is: a tea grading and screening device, including a sieve plate, wherein the sieve plate is uniformly provided with a plurality of sieve holes.

[0009] A baffle plate is installed below the sieve plate. The baffle plate is evenly provided with a plurality of clearance holes corresponding to the sieve holes. The sieve plate is equipped with a control mechanism that causes the baffle plate to move below the sieve plate and change the size of the sieve holes to achieve the grading and screening of tea leaves.

[0010] Furthermore, the control mechanism includes a rack installed below one side of the barrier plate, a drive shaft rotatably connected to the lower side of the sieve plate, a gear meshing with the rack connected to the drive shaft, and a motor that drives and cooperates with the drive shaft installed on the sieve plate.

[0011] Furthermore, both the sieve holes and the clearance holes adopt a rhomboid structure, and the side length of the clearance holes is twice the side length of the sieve holes.

[0012] Furthermore, the barrier plate has multiple sliding grooves on its edge, and the sieve plate is connected downward to multiple support columns that extend into the sliding grooves through their ends and slide in relation to the barrier plate. The ends of the support columns pass through the sliding grooves and are connected to hanging plates that fit against the bottom surface of the barrier plate.

[0013] Furthermore, the sieve plate has multiple mounting holes evenly distributed along its edge to facilitate installation of the device in relevant tea grading equipment.

[0014] III. Beneficial Effects

[0015] The advantages of this invention compared to the prior art are as follows: the device improves the sieve plate by adding a baffle plate below the sieve plate. The baffle plate contains clearance holes corresponding to the sieve holes on the sieve plate. By moving the baffle plate below the sieve plate, the degree of obstruction to the sieve holes is changed, thereby changing the size of the space left for the tea leaves to fall through the sieve holes, thus expanding the applicability of tea grading. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the external structure of a tea grading and screening device according to this utility model. Figure 1 .

[0017] Figure 2 This is a schematic diagram of the external structure of a tea grading and screening device according to this utility model. Figure 2 .

[0018] Figure 3 This is a schematic diagram of the external structure of a tea grading and screening device according to this utility model. Figure 3 .

[0019] Figure 4 This is a schematic diagram of the external structure of a tea grading and screening device according to this utility model. Figure 4 .

[0020] Figure 5 yes Figure 3 A schematic diagram of the structure of part A.

[0021] Figure 6 yes Figure 4 A partial structural diagram.

[0022] As shown in the figure: 1. Screening plate, 2. Screen holes, 3. Barrier plate, 4. Clearance hole, 5. Support column, 6. Slide groove, 7. Hanging plate, 8. Rack, 9. Motor, 10. Drive shaft, 11. Gear, 12. Mounting hole. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings.

[0024] To solve the above-mentioned technical problems, the technical solution provided by this utility model is: a tea grading and screening device, combined with the attached... Figures 1-2 The device includes a sieve plate 1, the edge of which is provided with a plurality of mounting holes 12 to facilitate the installation of the device in relevant tea grading equipment, and the sieve plate 1 is provided with a plurality of sieve holes 2.

[0025] The sieve plate 1 is made of thin metal or plastic material, with diamond-shaped sieve holes 2 evenly arranged on it. The diamond-shaped sieve holes 2 are preferably made of a structure with all four inner corners of 90 degrees, that is, a rotated square. In this way, the gap left by the barrier plate 3 after the sieve holes 2 are more regular in shape, which is conducive to the tea leaves passing through the sieve holes 2 and the clearance holes in sequence.

[0026] Combined with appendix Figures 3-4 A baffle plate 3 is installed below the sieve plate 1. A plurality of clearance holes 4 corresponding to the sieve holes 2 are evenly provided on the baffle plate 3. Both the sieve holes 2 and the clearance holes 4 adopt a rhomboid structure, and the side length of the clearance hole 4 is twice the side length of the sieve hole 2. On this basis, the center lines of the two holes are on the same vertical plane in the moving direction of the baffle plate 3.

[0027] Combined with appendix Figure 6 The barrier plate 3 has multiple sliding grooves 6 on its edge. The sieve plate 1 is connected downward to multiple support columns 5 that extend into the sliding grooves 6 through their ends and are slidably connected to the barrier plate 3. The end of the support column 5 passes through the sliding groove 6 and is connected to a hanging plate 7 that is in contact with the bottom surface of the barrier plate 3.

[0028] The baffle plate 3 is suspended below the screening plate 1 by the support column 5 with the hanging plate 7 at the bottom end. The two form a whole. The device can be regarded as a screen or screen plate, which is installed in the corresponding position in the equipment. The baffle plate 3 has a sliding groove 6 to provide sufficient range of motion for it to move slightly below the screening plate 1.

[0029] Combined with appendix Figure 5 The sieve plate 1 is equipped with a control mechanism that causes the barrier plate 3 to move below the sieve plate 1 and change the size of the sieve holes 2 to achieve tea grading and screening. The control mechanism includes a rack 8 installed below one side of the barrier plate 3. A drive shaft 10 is rotatably connected to the lower side of the sieve plate 1. A gear 11 that meshes with the rack 8 is connected to the drive shaft 10. A motor 9 that drives and cooperates with the drive shaft 10 is installed on the sieve plate 1.

[0030] When the motor 9 runs, it drives the transmission shaft 10 to rotate. Through the meshing and transmission between the gear 11 on the transmission shaft 10 and the rack 8 installed below the baffle plate 3, the baffle plate 3 moves below the sieve plate 1. This causes the baffle plate 3 to make room below the sieve holes 2. The size of this area depends on the amount of movement of the baffle plate 3. This allows for active adjustment and control of the size of the sieve holes 2 on the sieve plate, adapting to tea leaves that are graded by size for sorting operations.

[0031] In a specific implementation of this utility model, the device is installed inside the tea sorting equipment like a general sieve or sieve plate. On this basis, a suitable wiring circuit needs to be prepared for the motor 9.

[0032] As the tea leaves are placed on the sieve plate 1, small pieces of tea leaves fall through the sieve holes 2 under the action of the vibrator and vibrating motor that work in conjunction with the sieve plate in the sorting equipment, while large pieces remain on the sieve plate 1.

[0033] If further grading is required, or if the current size of the sieve hole 2 is not compatible with the tea grading requirements, the motor 9 below the sieve plate 1 will briefly run to move the barrier plate 3 below the sieve plate 1. This will change the area of ​​the barrier plate 3 that covers the sieve hole 2, making room for the area where the hole and the sieve hole 2 are connected, thus forming a new size of tea sieving hole, thereby meeting the sorting operation of tea of ​​different grades.

[0034] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A tea grading and screening device, comprising a sieve plate (1), wherein the sieve plate (1) is uniformly provided with a plurality of sieve holes (2), characterized in that: A baffle plate (3) is installed below the sieve plate (1). The baffle plate (3) is evenly provided with a plurality of clearance holes (4) corresponding to the sieve holes (2). The sieve plate (1) is provided with a control mechanism that causes the baffle plate (3) to move below the sieve plate (1) and change the size of the sieve holes (2) to achieve the grading and screening of tea.

2. The tea grading and screening device according to claim 1, characterized in that: The control mechanism includes a rack (8) installed below one side of the barrier plate (3), a drive shaft (10) rotatably connected to one side of the sieve plate (1), a gear (11) meshing with the rack (8) connected to the drive shaft (10), and a motor (9) that drives and cooperates with the drive shaft (10) installed on the sieve plate (1).

3. The tea grading and screening device according to claim 1, characterized in that: Both the sieve hole (2) and the clearance hole (4) adopt a rhomboid structure, and the side length of the clearance hole (4) is twice the side length of the sieve hole (2).

4. The tea grading and screening device according to claim 1, characterized in that: The barrier plate (3) has multiple grooves (6) on its edge. The sieve plate (1) is connected downward to multiple support columns (5) that extend through the ends into the grooves (6) and slide with the barrier plate (3). The ends of the support columns (5) pass through the grooves (6) and are connected to a hanging plate (7) that fits against the bottom surface of the barrier plate (3).

5. The tea grading and screening device according to claim 1, characterized in that: The sieve plate (1) has multiple mounting holes (12) evenly distributed along its edge, which facilitates the installation of the device in relevant tea grading equipment.

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