A screening machine capable of grading tea leaves

Abstract

The utility model discloses a kind of screening machines that can carry out hierarchical classification of tea, it is related to tea screening field, including screening box, multiple screening plates are arranged from top to bottom in screening box, the outer side wall of screening plate is attached to the inner side wall of screening box, several screening holes are evenly provided on screening plate, the diameter of screening hole on multiple screening plates gradually decreases from top to bottom, multiple discharge windows are provided in the side wall of screening box, multiple discharge windows and multiple screening plates are one-to-one correspondence, the inner bottom surface of discharge window is flush with the upper surface of corresponding screening plate, each screening plate is correspondingly provided with push plate, push plate is slidably arranged on screening box, push plate is used to push tea on screening plate from corresponding discharge window, different particle size range of tea can be screened out once, realize hierarchical classification screening of tea, without subsequent manual screening of screening residue, improve production efficiency, reduce manual labor cost and manual labor intensity.

Description

Technical Field

[0001] This utility model relates to the field of tea sorting technology, specifically a sorting machine that can classify tea leaves into different grades. Background Technology

[0002] Tea originated in China and can be categorized into spring tea, summer tea, autumn tea, and winter tea based on seasonal harvesting. Various types of raw or refined tea leaves are further processed into processed teas, including scented tea, compressed tea, extracted tea, medicinal and health tea, tea-based foods, and tea-containing beverages. Furthermore, tea is graded, with different grades having different applications. Existing tea sorting machines can only perform a single sort, not multi-level sorting, and can only select high-quality tea leaves. The remaining residue must be manually picked out to remove usable, finer pieces, thus limiting the applicability of the tea grading process. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a screening machine that can classify tea leaves by grade, thereby solving the deficiencies of the prior art.

[0004] The purpose of this utility model is achieved through the following technical solution: a screening machine for grading tea leaves by layer, comprising a screening box, wherein multiple screening plates are arranged from top to bottom inside the screening box, the outer sidewall of the screening plates is attached to the inner sidewall of the screening box, and a plurality of screening holes are evenly opened on the screening plates, the diameter of the screening holes on the multiple screening plates gradually decreasing from top to bottom, and a plurality of feeding windows are opened on the sidewall of the screening box, the plurality of feeding windows corresponding one-to-one with the plurality of screening plates, the inner bottom surface of the feeding window being flush with the upper surface of the corresponding screening plate, and each screening plate being provided with a corresponding push plate, the push plate slidingly passing through the screening box, the push plate being used to push the tea leaves on the screening plate out from the corresponding feeding window.

[0005] Furthermore, each of the feeding windows is equipped with a collection cover, which is fixed to the outer wall of the screening box, and the end of the collection cover away from the screening box is connected to a feeding pipe.

[0006] Furthermore, multiple vibrators are installed on the side wall of the screening box.

[0007] Furthermore, an installation groove is provided on the inner bottom surface of the feeding window, and a sealing plate is slidably disposed in the installation groove. The sealing plate is used to close or open the feeding window.

[0008] Furthermore, an electromagnet is provided inside the sealing plate, and a permanent magnet is fixed at the bottom of the sealing plate. When the electromagnet is energized, it generates magnetic poles that are opposite to the magnetic properties of the permanent magnet. A spring is connected to the bottom of the sealing plate, and the spring is connected to the inner bottom surface of the mounting slot. When the top surface of the sealing plate contacts the inner top surface of the feeding window, the spring is in a compressed state.

[0009] Furthermore, a positioning block is fixed to the inner wall of the mounting slot. When the bottom surface of the sealing plate contacts the positioning block, the top surface of the sealing plate is flush with the inner bottom surface of the unloading window.

[0010] Furthermore, the end of the push plate away from the feeding window extends out of the screening box and is fixedly connected to the drive vertical plate. The drive vertical plate is connected to the telescopic shaft of the push cylinder, and the cylinder body of the push cylinder is horizontally installed on the screening box.

[0011] Furthermore, a feed hopper is provided on the top of the screening box.

[0012] The beneficial effects of this utility model are: It can screen tea leaves of different particle sizes in one go, realizing the grading and screening of tea leaves. It eliminates the need for subsequent manual screening of residues, thereby improving production efficiency and reducing labor costs and intensity. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the internal structure of a sorting machine that can classify tea leaves into different grades according to this utility model. Figure 2 for Figure 1 Enlarged view of point A in the middle; In the diagram, 1-screening box, 2-screening plate, 3-screening hole, 4-feeding window, 5-push plate, 6-collecting cover, 7-feeding pipe, 8-vibrator, 9-mounting slot, 10-sealing plate, 11-electromagnet, 12-permanent magnet, 13-spring, 14-positioning block, 15-drive vertical plate, 16-push cylinder, 17-feeding hopper. Detailed Implementation

[0014] Example 1 like Figure 1 and Figure 2As shown, a screening machine for grading tea leaves includes a screening box 1. A feed hopper 17 is located at the top of the screening box 1. Multiple screening plates 2 are arranged from top to bottom inside the screening box 1. The outer walls of the screening plates 2 are attached to the inner walls of the screening box 1. Several screening holes 3 are evenly distributed on the screening plates 2, with the diameter of the screening holes 3 gradually decreasing from top to bottom. Multiple discharge windows 4 are provided on the side walls of the screening box 1, each corresponding to one of the screening plates 2. The inner bottom surface of the discharge window 4 is flush with the upper surface of the corresponding screening plate 2. Each screening plate 2 is equipped with a push plate 5, which slides through the screening box 1. The push plate 5 is used to push the tea leaves on the screening plate 2 through the corresponding discharge window. 4. The tea leaves are fed into the screening box 1 through the feed hopper 17. The tea leaves first fall onto the uppermost screening plate 2, where they are screened through the large-diameter screening holes 3 to separate large-leaf tea leaves. Small-leaf tea leaves fall onto the next screening plate 2, where they are screened through the screening holes 3. This process of multiple screening plates 2 achieves multi-stage screening of tea leaves, allowing for the separation of tea leaves of different particle sizes in one step. This eliminates the need for subsequent manual screening of the residue, improving production efficiency and reducing labor costs and intensity. After screening, the tea leaves on the screening plates 2 are pushed to the discharge window 4 by the push plate 5, through which the screened tea leaves are discharged.

[0015] Example 2 Based on Example 1, such as Figure 1 As shown, the end of the push plate 5 away from the feeding window 4 extends out of the screening box 1 and is fixedly connected to the drive vertical plate 15. The drive vertical plate 15 is connected to the telescopic shaft of the push cylinder 16. The cylinder body of the push cylinder 16 is horizontally installed on the screening box 1. By pushing the cylinder 16 to extend or retract, the drive vertical plate 15 moves away from or closer to the feeding window 4. The drive vertical plate 15 simultaneously drives multiple push plates 5 to move, thereby simultaneously pushing out the tea leaves on multiple screening plates 2, which has a high discharge efficiency.

[0016] Example 3 Based on Embodiment 2, each feeding window 4 is equipped with a collection cover 6, which is fixed to the outer wall of the screening box 1. The end of the collection cover 6 away from the screening box 1 is connected to the feeding pipe 7. Multiple vibrators 8 are installed on the side wall of the screening box 1. During the screening operation, the vibrators 8 cause the screening box 1 to vibrate, which speeds up the screening efficiency and prevents the tea leaves from accumulating and affecting the screening effect. After the screening is completed, the push plate 5 pushes the tea leaves into the collection cover 6. The tea leaves are collected by the collection cover 6 and discharged from the feeding pipe 7, which facilitates the collection of the discharged tea leaves.

[0017] Example 4 Based on Example 3, such as Figure 1 and Figure 2As shown, an installation slot 9 is provided on the inner bottom surface of the unloading window 4. A sealing plate 10 is slidably installed in the installation slot 9. The sealing plate 10 is used to close or open the unloading window 4. An electromagnet 11 is installed in the sealing plate 10. A permanent magnet 12 is fixed to the bottom of the sealing plate 10. When the electromagnet 11 is energized, it generates magnetic poles that are opposite to the magnetic properties of the permanent magnet 12. A spring 13 is connected to the bottom of the sealing plate 10. The spring 13 is connected to the inner bottom surface of the installation slot 9. When the top surface of the sealing plate 10 contacts the inner top surface of the unloading window 4, the spring 13 is in a compressed state. A positioning block 14 is fixed to the inner side wall of the installation slot 9. When the bottom surface of the sealing plate 10 contacts the positioning block... At 2 PM, the top surface of the sealing plate 10 is flush with the inner bottom surface of the feeding window 4. During screening, the electromagnet 11 is de-energized. Under the action of the spring 13, the top surface of the sealing plate 10 contacts the inner top surface of the feeding window 4, thereby closing the feeding window 4 and ensuring that the tea leaves do not discharge from the feeding window 4 during screening. When the screening is completed and the material is discharged, the electromagnet 11 is energized to attract the permanent magnet 12, thereby driving the sealing plate 10 to move downward, so that the sealing plate 10 contacts the positioning block 14, making the top surface of the sealing plate 10 flush with the inner bottom surface of the feeding window 4, so that the tea leaves can smoothly pass through the feeding window 4 and enter the collection hood 6.

Claims

1. A sorting machine for classifying tea leaves by grade, comprising a sorting box (1), characterized in that, The screening box (1) is provided with multiple screening plates (2) arranged from top to bottom. The outer side wall of the screening plate (2) is attached to the inner side wall of the screening box (1). The screening plate (2) is evenly provided with a number of screening holes (3). The diameter of the screening holes (3) on the multiple screening plates (2) gradually decreases from top to bottom. The side wall of the screening box (1) is provided with multiple feeding windows (4). The multiple feeding windows (4) correspond one-to-one with the multiple screening plates (2). The inner bottom surface of the feeding window (4) is flush with the upper surface of the corresponding screening plate (2). Each screening plate (2) is provided with a push plate (5). The push plate (5) slides through the screening box (1). The push plate (5) is used to push the tea leaves on the screening plate (2) out of the corresponding feeding window (4).

2. A screening machine for grading tea leaves according to claim 1, characterized in that, Each of the feeding windows (4) is provided with a collection cover (6), which is fixed on the outer wall of the screening box (1). The end of the collection cover (6) away from the screening box (1) is connected to a feeding pipe (7).

3. A screening machine for grading tea leaves according to claim 1, characterized in that, Multiple vibrators (8) are installed on the side wall of the screening box (1).

4. A screening machine for grading tea leaves according to claim 1, characterized in that, The bottom surface of the feeding window (4) is provided with an installation slot (9), and a sealing plate (10) is slidably provided in the installation slot (9). The sealing plate (10) is used to close or open the feeding window (4).

5. A screening machine for grading tea leaves according to claim 4, characterized in that, An electromagnet (11) is provided inside the sealing plate (10), and a permanent magnet (12) is fixed at the bottom of the sealing plate (10). When the electromagnet (11) is energized, it generates magnetic poles that are opposite to the magnetic properties of the permanent magnet (12). A spring (13) is connected to the bottom of the sealing plate (10). The spring (13) is connected to the inner bottom surface of the mounting slot (9). When the top surface of the sealing plate (10) contacts the inner top surface of the feeding window (4), the spring (13) is in a compressed state.

6. A screening machine for grading tea leaves according to claim 5, characterized in that, The inner wall of the mounting slot (9) is fixed with a positioning block (14). When the bottom surface of the sealing plate (10) contacts the positioning block (14), the top surface of the sealing plate (10) is flush with the inner bottom surface of the unloading window (4).

7. A screening machine for grading tea leaves according to claim 1, characterized in that, The push plate (5) extends out of the screening box (1) from the end away from the feeding window (4) and is fixedly connected to the drive vertical plate (15). The drive vertical plate (15) is connected to the telescopic shaft of the push cylinder (16). The cylinder body of the push cylinder (16) is horizontally installed on the screening box (1).

8. A screening machine for grading tea leaves according to claim 1, characterized in that, The top of the screening box (1) is provided with a feed hopper (17).

Images