A tea processing screening device

Abstract

This utility model relates to the technical field of screening devices, specifically a screening device for tea processing. The utility model includes a screening box mounted on a base frame, a telescopic rod rotatably mounted between the base frame and the screening box, a main spring fixedly connected between the base frame and the screening box, a screening screen on the inner wall of the screening box, and a vibration motor mounted at the bottom of the screening box. The vibration motor controls the rotation of an eccentric wheel. By setting a pre-fixing component, when pre-fixing the screening screen during installation, a pulling mechanism retracts the pin completely into the screening box, compressing the reset mechanism. Then, the screening screen is dragged until the mounting holes of the mounting plate on the screening screen align with the mounting holes of the screening box. The pulling mechanism is then released, the reset mechanism resets, and the pin is inserted into the screening screen for fixation. Finally, screws are used to fix the mounting plate and the screening box, thereby achieving the effect of pre-fixing the screening screen as much as possible.

Description

Technical Field

[0001] This utility model relates to the field of screening device technology, and in particular to a screening device for tea processing. Background Technology

[0002] The screening device is used to screen tea leaves during tea processing. The screening device consists of a base frame, screening box, telescopic rod, main spring, screening mesh, vibrating motor, and eccentric wheel. When using the screening device, the worker pours the dried tea leaves onto the screening mesh in the screening box. The vibrating motor is started by the controller, and the vibrating motor drives the eccentric wheel to rotate. With the assistance of the main spring and telescopic rod, the screening box on the base frame shakes, thereby screening the tea leaves. Tea leaves smaller than the mesh size of the screening mesh fall to the bottom of the screening box. Then, the screened tea leaves are discharged from the first discharge port and the second discharge port.

[0003] In their daily work, the inventors discovered that when using the sieving device, different types of tea need to be sieved, requiring the replacement of sieves with different mesh sizes. However, when installing the sieve, workers need to hold it up and keep the mounting holes of the mounting plate on the sieve aligned with the mounting holes of the sieve box before tightening the screws to secure it. But workers' arms can easily become sore from holding it up for a long time, which may cause the sieve to shake, potentially leading to misalignment and requiring realignment before installation, thus affecting the efficiency of the sieve installation. Utility Model Content

[0004] The purpose of this invention is to solve the problem that in actual use, different types of tea need to be sieved, requiring the replacement of sieves with different mesh sizes. However, when installing the sieve, workers need to hold it up and keep the mounting holes of the mounting plate on the sieve aligned with the mounting holes of the sieve box before tightening the screws to fix it. But workers' arms can easily get sore from holding it up for a long time, which may cause the sieve to shake, resulting in misalignment and requiring realignment and reinstallation, thus affecting the efficiency of sieve installation. Therefore, this invention provides a tea processing sieve device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a tea processing sieving device, comprising a sieving box mounted on a base frame, a telescopic rod rotatably mounted between the base frame and the sieving box, a main spring fixedly connected between the base frame and the sieving box, a sieving screen mounted on the inner wall of the sieving box, a vibration motor mounted on the bottom of the sieving box, the vibration motor controlling the rotation of an eccentric wheel, a first discharge port and a second discharge port fixedly connected to the left end of the sieving box, and a pre-fixing component provided between the sieving box and the sieving screen, the pre-fixing component comprising a plurality of evenly distributed pins slidably inserted into both sides of the inner wall of the sieving box, the pins being inserted into the sieving screen.

[0006] The effect achieved by the above components is as follows: By setting the pre-fixing component, when the screening screen is pre-fixed during installation, the pulling mechanism causes the pin to retract completely into the screening box, compressing the reset mechanism. Then, the screening screen is dragged so that the mounting holes of the mounting plate on the screening screen are aligned with the mounting holes of the screening box. Then, the pulling mechanism is released, the reset mechanism resets, and the pin is inserted into the screening screen for fixation. Finally, screws are used to fix the mounting plate and the screening box, thereby achieving the effect of pre-fixing the screening screen as much as possible.

[0007] Preferably, positioning blocks are slidably inserted at both ends of the pin, and the positioning blocks are inserted into the screening screen.

[0008] The effect achieved by the above components is as follows: by pulling the mechanism, the positioning block is fully retracted into the pin, the elastic mechanism is compressed, and the pin is fully retracted into the screening box. After the pin is inserted into the screening screen, the elastic mechanism is reset, and the positioning block is inserted into the screening screen to further fix the screening screen.

[0009] Preferably, a first spring is fixedly connected between the two positioning blocks, and the first spring is located inside the pin.

[0010] The effect achieved by the above components is that the pulling mechanism causes the positioning block to retract completely into the pin, thereby compressing the first spring.

[0011] Preferably, a second spring is fixedly connected to the left end of the pin, and the other end of the second spring is fixed to the screening box.

[0012] The effect achieved by the above components is that the pulling mechanism causes the pin to retract completely into the screening box, thereby compressing the second spring.

[0013] Preferably, a pull rope is fixedly connected to the lower end of the positioning block, and the pull rope passes through the pin and the screening box.

[0014] The effect achieved by the above components is: pulling the pull rope causes the positioning block to retract completely into the pin, and the pin to retract completely into the screening box.

[0015] Preferably, the surface of the pull rope is provided with a protective sleeve, which is a woven sleeve.

[0016] The effect achieved by the above components is to protect the pull rope and reduce wear on the pull rope by setting up a protective sleeve.

[0017] Preferably, the upper end of the positioning block is provided with a sliding surface, and a first magnetic sheet is fixedly connected to one side of the sliding surface.

[0018] The effect achieved by the above components is that, by setting a sliding surface, the auxiliary positioning block is inserted into the screening screen.

[0019] Preferably, a second magnetic sheet is fixedly connected to the inner wall of the screening mesh, and the first magnetic sheet and the second magnetic sheet attract each other when they are close together.

[0020] The effect achieved by the above components is to assist in limiting the positioning block by setting the first magnetic sheet and the second magnetic sheet.

[0021] In summary, the beneficial effects of this utility model are as follows:

[0022] In this invention, by setting a pre-fixing component, when pre-fixing the screening mesh during installation, a pulling mechanism is used to fully retract the pin into the screening box, compressing the reset mechanism. Then, the screening mesh is dragged so that the mounting holes of the mounting plate on the screening mesh align with the mounting holes of the screening box. The pulling mechanism is then released, the reset mechanism resets, and the pin is inserted into the screening mesh for fixation. Finally, screws are used to fix the mounting plate and the screening box, thus achieving the effect of pre-fixing the screening mesh as much as possible. This solves the problem that when screening different types of tea, different mesh sizes of screening mesh need to be used. However, during installation, workers need to hold the screening mesh and keep the mounting holes of the mounting plate on the screening mesh aligned with the mounting holes of the screening box before tightening the screws. Prolonged holding can cause arm fatigue for workers, potentially leading to screen shaking, misalignment, and the need for re-alignment and reinstallation, which may affect the efficiency of screening mesh installation. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the bottom of this utility model;

[0025] Figure 3 This is a three-dimensional structural schematic diagram of the cross-section of this utility model;

[0026] Figure 4 This utility model Figure 3 An enlarged three-dimensional structural diagram of A in the middle.

[0027] Legend: 1. Base frame; 2. Pre-fixed assembly; 3. Telescopic rod; 4. Screening box; 5. Main spring; 6. Screening mesh; 7. First discharge port; 8. Second discharge port; 9. Mounting plate; 10. Vibration motor; 11. Eccentric wheel; 21. Pin; 22. Second spring; 23. Positioning block; 24. Sliding surface; 25. First spring; 26. Pull rope; 27. Protective sleeve. Detailed Implementation

[0028] Reference Figure 1 and Figure 2 as well as Figure 3As shown, this utility model provides a technical solution: a tea processing sieving device includes a sieving box 4 set on a base frame 1, a telescopic rod 3 rotatably installed between the base frame 1 and the sieving box 4, a main spring 5 fixedly connected between the base frame 1 and the sieving box 4, a sieving screen 6 provided on the inner wall of the sieving box 4, a vibration motor 10 installed at the bottom of the sieving box 4, the vibration motor 10 controlling the rotation of the eccentric wheel 11, a first discharge port 7 and a second discharge port 8 fixedly connected to the left end of the sieving box 4, and a pre-fixing component 2 provided between the sieving box 4 and the sieving screen 6.

[0029] Reference Figure 4 As shown in this embodiment: the pre-fixing component 2 includes multiple evenly distributed pins 21 slidably inserted into both sides of the inner wall of the screening box 4. The pins 21 are inserted into the screening screen 6. By setting the pre-fixing component 2, when the screening screen 6 is pre-fixed during installation, the pulling mechanism causes the pins 21 to be completely retracted into the screening box 4, compressing the reset mechanism. Then, the screening screen 6 is dragged so that the mounting hole of the mounting plate 9 on the screening screen 6 is aligned with the mounting hole of the screening box 4. Then, the pulling mechanism is released, the reset mechanism is reset, and the pins 21 are inserted into the screening screen 6 for fixation. Then, screws are used to fix the mounting plate 9 and the screening box 4, thereby achieving the effect of pre-fixing the screening screen 6 as much as possible. Positioning blocks 23 are slidably inserted at both ends of the pins 21. The positioning blocks 23 are inserted into the screening screen 6. By pulling the mechanism, the positioning blocks 23 are completely retracted into the pins 21, causing the elastic mechanism to be compressed. The pin 21 is compressed, causing it to retract completely into the screening box 4. After the pin 21 is inserted into the screening screen 6, the elastic mechanism resets, causing the positioning block 23 to be inserted into the screening screen 6, further fixing the screening screen 6. A first spring 25 is fixedly connected between the two positioning blocks 23. The first spring 25 is located inside the pin 21. By pulling the mechanism, the positioning block 23 is completely retracted into the pin 21, causing the first spring 25 to be compressed. A second spring 22 is fixedly connected to the left end of the pin 21. The other end of the second spring 22 is fixed to the screening box 4. By pulling the mechanism, the pin 21 is completely retracted into the screening box 4, causing the second spring 22 to be compressed. A pull rope 26 is fixedly connected to the lower end of the positioning block 23. The pull rope 26 passes through the pin 21 and the screening box 4. Pulling the pull rope 26 causes the positioning block 23 to retract completely into the pin 21, causing the pin 21 to retract completely into the screening box 4.

[0030] Reference Figure 4As shown in this embodiment: a protective sleeve 27 is provided on the surface of the pull rope 26. The protective sleeve 27 is a braided sleeve. By providing the protective sleeve 27, the pull rope 26 is protected and wear of the pull rope 26 is reduced. A sliding surface 24 is provided at the upper end of the positioning block 23. A first magnetic piece is fixedly connected to one side of the sliding surface 24. By providing the sliding surface 24, the positioning block 23 is assisted in being inserted into the screening screen 6. A sliding surface 24 is provided at the upper end of the positioning block 23. A first magnetic piece is fixedly connected to one side of the sliding surface 24. By providing the first magnetic piece and the second magnetic piece, the positioning block 23 is assisted in being limited.

[0031] Working principle:

[0032] When using the sieving device, the worker pours the dried tea leaves onto the sieving screen 6 inside the sieving box 4. The vibrating motor 10 (model XP optional) is started by the controller, driving the eccentric wheel 11 to rotate. With the assistance of the main spring 5 and the telescopic rod 3, the sieving box 4 on the base frame 1 vibrates, thus sieving the tea leaves. Tea leaves smaller than the mesh size of the sieving screen 6 fall to the bottom of the sieving box 4. The sieving tea leaves are then discharged from the first outlet 7 and the second outlet 8. When installing and pre-fixing the sieving screen 6, pulling the pull rope 26 causes the positioning block 23 to fully retract into the pin 21, compressing the first spring 25 and causing the pin 21 to fully retract into the sieving box. Inside the screening box 4, the second spring 22 is compressed, and then the screening screen 6 is dragged so that the mounting hole of the mounting plate 9 on the screening screen 6 is aligned with the mounting hole of the screening box 4. Then the pull rope 26 is released, the second spring 22 returns to its original position, and the pin 21 is inserted into the screening screen 6 for fixation. The first spring 25 returns to its original position, and with the help of the sliding surface 24, the positioning block 23 is inserted into the screening screen 6 to further fix the screening screen 6. Then the mounting plate 9 and the screening box 4 are fixed with screws to achieve the effect of pre-fixing the screening screen 6 as much as possible. The pull rope 26 is protected by the protective sleeve 27 to reduce the wear of the pull rope 26. The positioning block 23 is assisted in limiting the position by the first magnetic plate and the second magnetic plate.

[0033] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may use the disclosed technical content to make changes or modifications to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the scope of the utility model's technical solution, still fall within the protection scope of this utility model's technical solution. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through specific circumstances.

Claims

1. A tea processing and screening apparatus comprising a screening box (4) arranged on a chassis (1), characterized in that: A telescopic rod (3) is rotatably installed between the base frame (1) and the screening box (4). A main spring (5) is fixedly connected between the base frame (1) and the screening box (4). A screening screen (6) is provided on the inner wall of the screening box (4). A vibration motor (10) is installed at the bottom of the screening box (4). The vibration motor (10) controls the rotation of the eccentric wheel (11). A first discharge port (7) and a second discharge port (8) are fixedly connected to the left end of the screening box (4). A pre-fixing component (2) is provided between the screening box (4) and the screening screen (6). The pre-fixing component (2) includes a plurality of evenly distributed pins (21) that are slidably inserted into both sides of the inner wall of the screening box (4). The pins (21) are inserted into the screening screen (6).

2. A tea processing and screening apparatus as claimed in claim 1, wherein: Positioning blocks (23) are slidably inserted at both ends of the pin (21), and the positioning blocks (23) are inserted into the screening screen (6).

3. A tea processing and screening apparatus as claimed in claim 2, wherein: A first spring (25) is fixedly connected between the two positioning blocks (23), and the first spring (25) is located inside the pin (21).

4. A tea processing and screening apparatus as claimed in claim 3, wherein: The left end of the pin (21) is fixedly connected to a second spring (22), and the other end of the second spring (22) is fixed to the screening box (4).

5. A tea processing and screening apparatus as claimed in claim 4, wherein: The lower end of the positioning block (23) is fixedly connected to a pull rope (26), which passes through the pin (21) and the screening box (4).

6. A tea processing and screening apparatus as claimed in claim 5, wherein: The surface of the pull rope (26) is provided with a protective sleeve (27), which is a woven sleeve.

7. A tea processing sieving device according to claim 6, characterized in that: The upper end of the positioning block (23) is provided with a sliding surface (24), and a first magnetic sheet is fixedly connected to one side of the sliding surface (24).

8. A tea processing and screening apparatus as claimed in claim 7, wherein: The inner wall of the screening mesh (6) is fixedly connected to a second magnetic sheet, and the first magnetic sheet and the second magnetic sheet attract each other when they are close together.

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