Multi-layer vibrating screen tool for screening tea leaves

Abstract

The utility model discloses a multi-layer vibrating screen for tea screening, which relates to the technical field of tea processing and comprises a screening box, a feed inlet is arranged at the upper end of the screening box, a plurality of U-shaped frames are arranged inside the screening box, screening frames are arranged inside the U-shaped frames, and screening holes of the plurality of screening frames are sequentially reduced from top to bottom. A first connecting rod and a second connecting rod are arranged on the two sides of the U-shaped frame correspondingly, a spring is arranged at the end, away from the U-shaped frame, of the first connecting rod, a rotating shaft is arranged at the end, away from the U-shaped frame, of the second connecting rod, the surface of the rotating shaft is sleeved with a cam, and a servo motor is arranged at the end of the rotating shaft; a discharge hole is formed below the box door; according to the tea leaf screening device, the cam is driven by the servo motor to rotate, the cam rotates to drive the screening frame to continuously shake left and right, tea leaves are screened, the tea leaves can be screened for multiple times through the multi-layer screening frame, the tea leaves are classified according to the sizes of the tea leaves, and the screening efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of tea processing technology, specifically to a multi-layer vibrating screen for tea sieving. Background Technology

[0002] Tea leaves, commonly known as tea, are mainly composed of the leaves and buds of the tea plant. They can be made into a tea beverage by steeping them in boiling water. It is one of the three most famous beverages in the world. After picking, tea leaves need to undergo a series of meticulous processing steps, which usually include key steps such as picking, removing impurities, fixing, rolling, drying and sieving, before they can become the tea products we buy every day.

[0003] In the tea processing process, vibrating screening equipment is usually used for screening. Most existing tea screening devices use single-stage screening, and the tea leaves stay on the device for too short a time, resulting in insufficient screening and poor screening effect. Often, multiple screenings are required, which makes the overall work efficiency low.

[0004] To address the above problems, this utility model provides a multi-layer vibrating screen for tea sieving. Utility Model Content

[0005] The purpose of this invention is to provide a multi-layer vibrating screen for tea sieving. A servo motor drives a cam to rotate. When the cam rotates to contact the end of the second connecting rod, the cam's rotation causes the second connecting rod to move away from the rotating shaft, thereby causing the first connecting rod to compress the spring. When the cam rotates to disengage from the second connecting rod, the first connecting rod moves towards the rotating shaft under the action of the spring, causing the U-shaped frame and the second connecting rod to return to their original positions. This process is repeated, causing the U-shaped frame to continuously oscillate the sieving frame from side to side, thus achieving tea sieving. The multi-layered sieving frame allows for multiple sievings of the tea, facilitating tea processing and classification according to size, improving the sieving effect. After sieving, the door is opened, and the sieving frame is pulled out from inside the U-shaped frame, allowing for easy removal of the sieving tea, further improving the device's tea sieving efficiency and solving the problems in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-layer vibrating screen for tea sieving, comprising a sieving box, an inlet at the top of the sieving box, several U-shaped frames with equal spacing arranged vertically inside the sieving box, sieving frames arranged inside the U-shaped frames, the sieve holes of the multiple sieving frames decreasing in size from top to bottom, a first connecting rod and a second connecting rod respectively arranged on both sides of the U-shaped frame, a spring arranged at the end of the first connecting rod away from the U-shaped frame, a rotating shaft arranged at the end of the second connecting rod away from the U-shaped frame, cams corresponding to the second connecting rods being fitted on the surface of the rotating shaft, a servo motor arranged at one end of the rotating shaft, a door hinged to the front of the sieving box, and an outlet at the bottom of the door.

[0007] Furthermore, several first rectangular blocks and second rectangular blocks are fixedly connected to both sides of the screening box. The first rectangular blocks correspond one-to-one with the first connecting rods, and the second rectangular blocks correspond one-to-one with the second connecting rods. The interior of the first rectangular block has a groove that communicates with the interior of the screening box. One end of the first connecting rod extends into the groove and is slidably connected to its inner wall. One end of the spring is fixedly connected to the inner wall of the groove, and the other end of the spring is fixedly connected to the end of the first connecting rod. The end of the second rectangular block has a rectangular through hole that communicates with the interior of the screening box. The second connecting rod is slidably connected to the inner wall of the rectangular through hole. One end of the second connecting rod extends outward to the outside of the rectangular through hole, and the outer end of the second connecting rod is rounded.

[0008] Furthermore, two mutually symmetrical first mounting plates and second mounting plates are fixedly connected to one side of the screening box. The upper end of the rotating shaft is rotatably connected to the lower end of the first mounting plate through a bearing, and the lower end of the rotating shaft is rotatably connected to the upper end of the second mounting plate through a bearing. The servo motor is fixedly mounted on the upper end of the first mounting plate, and the upper end of the rotating shaft extends upward to the outside of the first mounting plate and is fixedly connected to the output end of the servo motor. The cam is fixedly sleeved on the rotating shaft and can rotate periodically to collide with the end of the corresponding second connecting rod.

[0009] Furthermore, symmetrical sliders are fixedly connected to both sides of the screening frame, and grooves adapted to the sliders are opened on the inner walls of both sides of the U-shaped frame. The sliders are slidably connected to the inner walls of the grooves, and placement plates are fixedly connected to the lower ends of the inner walls of both sides of the U-shaped frame. The lower ends of the screening frame are placed on the upper ends of the placement plates.

[0010] Furthermore, a first threaded hole is provided at one end of the placement plate near the box door, and a matching second threaded hole is provided at the lower end of the screening frame. A hand-tightening bolt is threaded inside the first threaded hole, and one end of the hand-tightening bolt is threaded inside the second threaded hole.

[0011] Furthermore, a feeding channel is fixedly connected to the upper end of the feed inlet, and a feeding hopper is fixedly connected to the upper end of the feeding channel.

[0012] Furthermore, a ramp is fixedly connected to the bottom of the screening box, with the toe of the ramp close to the discharge port, and a discharge guide plate is fixedly connected to the outside of the discharge port.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This utility model provides a multi-layer vibrating sieve for tea sieving. A servo motor drives a cam to rotate. When the cam rotates to contact the end of the second connecting rod, it moves the second connecting rod away from the rotating shaft, causing the first connecting rod to compress the spring. When the cam rotates to disengage from the second connecting rod, the first connecting rod moves towards the rotating shaft under the action of the spring, causing the U-shaped frame and the second connecting rod to return to their original positions. This process is repeated, causing the U-shaped frame to continuously oscillate the sieve frame from side to side, thus sieving the tea leaves. The multi-layered sieve frame allows for multiple sievings of the tea leaves, facilitating processing and classification according to size, improving the sieving effect. After sieving, the door is opened, and the sieve frame is pulled out from inside the U-shaped frame, allowing for easy removal of the sieving tea leaves, further improving the device's sieving efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the screening frame in this utility model;

[0017] Figure 3 This is a schematic diagram of the groove structure in this utility model;

[0018] Figure 4 This is a schematic diagram of the spring structure in this utility model;

[0019] Figure 5 This is a schematic diagram of the slide groove in this utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the second threaded hole in this utility model.

[0021] In the diagram: 1. Screening box; 2. Feed inlet; 3. Feed channel; 4. Feed hopper; 5. U-shaped frame; 6. Screening frame; 7. Screen hole; 8. Sliding block; 9. Slide groove; 10. Placement plate; 11. First threaded hole; 12. Second threaded hole; 13. Hand-tightening bolt; 14. First connecting rod; 15. First rectangular block; 16. Groove; 17. Spring; 18. Second connecting rod; 19. Second rectangular block; 20. Rectangular through hole; 21. First mounting plate; 22. Second mounting plate; 23. Rotating shaft; 24. Cam; 25. Servo motor; 26. Box door; 27. Ramp; 28. Discharge port; 29. ​​Discharge guide plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] To address the technical problem of existing tea screening devices being insufficient in screening and having poor screening effects, often requiring multiple screenings and resulting in low overall work efficiency, such as... Figure 1-6 As shown, the following preferred technical solutions are provided:

[0024] A multi-layer vibrating sieve for tea sieving includes a sieving box 1 with a feed inlet 2 at the top. Several U-shaped frames 5 with equal spacing are arranged vertically inside the sieving box 1. Sieving frames 6 are arranged inside the U-shaped frames 5, with the sieve holes 7 of the multiple sieve frames 6 decreasing in size from top to bottom. A first connecting rod 14 and a second connecting rod 18 are respectively arranged on both sides of the U-shaped frames 5. A spring 17 is arranged at the end of the first connecting rod 14 away from the U-shaped frame 5. A rotating shaft 23 is arranged at the end of the second connecting rod 18 away from the U-shaped frame 5. A cam 24 corresponding to the second connecting rod 18 is fitted on the surface of the rotating shaft 23. A servo motor 25 is arranged at one end of the rotating shaft 23. A door 26 is hinged to the front of the sieving box 1, and a discharge port 28 is opened below the door 26.

[0025] Specifically, firstly, an appropriate amount of tea leaves is poured into the screening box 1 through the feed inlet 2. The tea leaves will first fall into the uppermost screening frame 6. Then, the servo motor 25 is started. The servo motor 25 drives the cam 24 to rotate through the rotating shaft 23. When the cam 24 rotates to contact the end of the second connecting rod 18, it will squeeze the second connecting rod 18 away from the rotating shaft 23. The second connecting rod 18 drives the U-shaped frame 5 to squeeze the first connecting rod 14. The first connecting rod 14 then squeezes the spring 17, causing the spring 17 to compress. When the cam 24 rotates to disengage from the second connecting rod 18, the first connecting rod 14 will be compressed by the action of the spring 17. Moving towards the rotating shaft 23, the first connecting rod 14 moves, causing the U-shaped frame 5 and the second connecting rod 18 to return to their original positions. Repeating this process, the U-shaped frame 5 will cause the sieving frame 6 to continuously sway left and right. This method allows for the sieving of tea leaves placed inside the sieving frame 6. The sides of the U-shaped frame 5 maintain sufficient distance from the inner wall of the sieving box 1, preventing collisions due to the swaying of the U-shaped frame 5. Then, through the multiple layers of sieving frames 6 with progressively smaller holes 7 from top to bottom, the tea leaves can be sieving multiple times and classified according to their size. The sieving tea leaves will remain in the sieving frames 6, separated... Broken leaves fall onto the inner bottom surface of the screening box 1 and are discharged through the outlet 28. After screening, the servo motor 25 is turned off, the box door 26 is opened, and the screening frame 6 is pulled out from inside the U-shaped frame 5, thus facilitating the removal of the screened tea leaves and further improving the screening efficiency of the device. This design aims to use the servo motor 25 to drive the cam 24 to rotate. When the cam 24 rotates to contact the end of the second connecting rod 18, the rotation of the cam 24 drives the second connecting rod 18 away from the rotating shaft 23, thereby causing the first connecting rod 14 to compress the spring 17. When the cam 24 rotates to disengage from the second connecting rod 18, the first connecting rod 14 compresses the spring 17. A connecting rod 14 moves towards the rotating shaft 23 under the action of spring 17, driving the U-shaped frame 5 and the second connecting rod 18 back to their original positions. Repeating this process, the U-shaped frame 5 will drive the screening frame 6 to sway left and right continuously, thus screening the tea leaves. The multi-layered screening frame 6 can screen the tea leaves multiple times, making it easier to process the tea leaves and classify them according to their size, thereby improving the screening effect. After screening, the box door 26 is opened, and the screening frame 6 is pulled out from inside the U-shaped frame 5, making it easy to take out the screened tea leaves, further improving the screening efficiency of this device.

[0026] Furthermore, such as Figure 3 and Figure 4 As shown, the following preferred technical solutions are provided:

[0027] Several first rectangular blocks 15 and second rectangular blocks 19 are fixedly connected to both sides of the screening box 1. Each first rectangular block 15 corresponds to a first connecting rod 14, and each second rectangular block 19 corresponds to a second connecting rod 18. The interior of each first rectangular block 15 has a groove 16 that communicates with the interior of the screening box 1. One end of each first connecting rod 14 extends into the groove 16 and slides against its inner wall. One end of a spring 17 is fixedly connected to the inner wall of the groove 16, and the other end of the spring 17 is fixedly connected to the end of the first connecting rod 14. The second rectangular blocks 19... The end of the U-shaped frame 5 is provided with a rectangular through hole 20 that communicates with the inside of the screening box 1. The second connecting rod 18 is slidably connected to the inner wall of the rectangular through hole 20. One end of the second connecting rod 18 extends outward to the outside of the rectangular through hole 20. The outer end of the second connecting rod 18 is rounded. The purpose of this design is to fix the U-shaped frame 5 inside the screening box 1 through the first connecting rod 14 and the second connecting rod 18. The first connecting rod 14 can slide inside the groove 16, and the second connecting rod 18 can slide inside the rectangular through hole 20, so that the U-shaped frame 5 can sway left and right.

[0028] Furthermore, such as Figure 1 As shown, the following preferred technical solutions are provided:

[0029] Two symmetrical first mounting plates 21 and second mounting plates 22 are fixedly connected to one side of the screening box 1. The upper end of the rotating shaft 23 is rotatably connected to the lower end of the first mounting plate 21 through a bearing, and the lower end of the rotating shaft 23 is rotatably connected to the upper end of the second mounting plate 22 through a bearing. The servo motor 25 is fixedly installed on the upper end of the first mounting plate 21. The upper end of the rotating shaft 23 extends upward to the outside of the first mounting plate 21 and is fixedly connected to the output end of the servo motor 25. The cam 24 is fixedly sleeved on the rotating shaft 23 and can rotate periodically until it collides with the end of the corresponding second connecting rod 18. The purpose of this design is to fix the position of the rotating shaft 23 through the first mounting plate 21 and the second mounting plate 22, and then drive the rotating shaft 23 to rotate through the output end of the servo motor 25. The rotation of the rotating shaft 23 drives the cam 24 to rotate.

[0030] Furthermore, such as Figure 4 and Figure 5 As shown, the following preferred technical solutions are provided:

[0031] The screening frame 6 is fixedly connected to two symmetrical sliders 8. The inner walls of the two sides of the U-shaped frame 5 are provided with grooves 9 that are adapted to the sliders 8. The sliders 8 are slidably connected to the inner walls of the grooves 9. The lower ends of the inner walls of the two sides of the U-shaped frame 5 are fixedly connected to the placement plates 10. The lower ends of the screening frame 6 are placed on the upper ends of the placement plates 10. The purpose of this design is to support the screening frame 6 through the placement plates 10. The sliders 8 and the grooves 9 can limit the screening frame 6 and prevent the screening frame 6 from falling off the U-shaped frame 5 when it shakes.

[0032] Furthermore, such as Figure 4 , Figure 5 and Figure 6 As shown, the following preferred technical solutions are provided:

[0033] The placement plate 10 has a first threaded hole 11 at one end near the box door 26, and a matching second threaded hole 12 at the lower end of the screening frame 6. A hand-tightening bolt 13 is threaded inside the first threaded hole 11, and one end of the hand-tightening bolt 13 is threaded inside the second threaded hole 12. The purpose of this design is to position and fix the screening frame 6 placed inside the U-shaped frame 5 by threading the hand-tightening bolt 13 inside the first threaded hole 11 and the second threaded hole 12, so as to prevent it from moving at will.

[0034] Furthermore, such as Figure 1 As shown, the following preferred technical solutions are provided:

[0035] A feeding channel 3 is fixedly connected to the upper end of the feeding inlet 2, and a feeding hopper 4 is fixedly connected to the upper end of the feeding channel 3. The purpose of this design is to facilitate the feeding of the tea leaves to be screened into the screening box 1 through the feeding hopper 4.

[0036] Furthermore, such as Figure 3 As shown, the following preferred technical solutions are provided:

[0037] The bottom of the screening box 1 is fixedly connected to a ramp 27. The foot of the ramp 27 is close to the discharge port 28. The outside of the discharge port 28 is fixedly connected to a discharge guide plate 29. The purpose of this design is to allow the screened tea fragments to accumulate at the foot of the ramp 27 for easy discharge from the discharge port 28. The discharge guide plate 29 can control the flow direction of the discharged tea fragments, allowing them to enter the collection device.

[0038] In summary: First, an appropriate amount of tea leaves is poured into the screening box 1 through the feed inlet 2. The tea leaves will fall into the uppermost screening frame 6. Then, the servo motor 25 is started. The servo motor 25 drives the cam 24 to rotate via the rotating shaft 23. When the cam 24 rotates to contact the end of the second connecting rod 18, it will squeeze the second connecting rod 18 away from the rotating shaft 23. The second connecting rod 18 drives the U-shaped frame 5 to squeeze the first connecting rod 14. The first connecting rod 14 then squeezes the spring 17, compressing the spring 17. When the cam 24 rotates to disengage from the second connecting rod 18, the first connecting rod 14 will move towards the rotating shaft 23 under the action of the spring 17. The movement of the first connecting rod 14 drives the U-shaped frame 5 and the second connecting rod 18 back to their original positions. This process is repeated. The U-shaped frame 5 will cause the screening frame 6 to shake continuously from side to side. This method can screen the tea leaves placed inside the screening frame 6. The two sides of the U-shaped frame 5 maintain a sufficient distance from the inner wall of the screening box 1 to prevent collision due to the shaking of the U-shaped frame 5. Then, through the multiple layers of screening frames 6 with the screen holes decreasing from top to bottom 7, the tea leaves can be screened multiple times and classified according to their size. The screened tea leaves will be retained in the screening frame 6, and the separated broken leaves will fall to the inner bottom surface of the screening box 1 and be discharged through the discharge port 28. After screening, the servo motor 25 is turned off, the box door 26 is opened, and the screening frame 6 is pulled out from inside the U-shaped frame 5, so that the screened tea leaves can be easily removed, further improving the screening efficiency of the device.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-deck vibrating sifter for tea leaf screening, comprising a screening box (1), characterized in that: The screening box (1) has a feed inlet (2) at the top. Inside the screening box (1), there are several U-shaped frames (5) with the same spacing arranged vertically. Inside the U-shaped frame (5), there is a screening frame (6). The screen holes (7) of the multiple screening frames (6) decrease in size from top to bottom. The two sides of the U-shaped frame (5) are respectively provided with a first connecting rod (14) and a second connecting rod (18). The end of the first connecting rod (14) away from the U-shaped frame (5) is provided with a spring (17). The end of the second connecting rod (18) away from the U-shaped frame (5) is provided with a rotating shaft (23). The surface of the rotating shaft (23) is fitted with a cam (24) that corresponds one-to-one with the second connecting rod (18). One end of the rotating shaft (23) is provided with a servo motor (25). The front of the screening box (1) is hinged with a box door (26). The bottom of the box door (26) is provided with a discharge port (28).

2. A multi-layered vibrating tea screening apparatus as claimed in claim 1, wherein: Several first rectangular blocks (15) and second rectangular blocks (19) are fixedly connected to both sides of the screening box (1). The first rectangular blocks (15) correspond one-to-one with the first connecting rods (14), and the second rectangular blocks (19) correspond one-to-one with the second connecting rods (18). The interior of the first rectangular block (15) is provided with a groove (16) that communicates with the interior of the screening box (1). One end of the first connecting rod (14) extends into the groove (16) and slides in connection with its inner wall. One end of the spring (17) is fixedly connected to the inner wall of the groove (16), and the other end of the spring (17) is fixedly connected to the end of the first connecting rod (14). The end of the second rectangular block (19) is provided with a rectangular through hole (20) that communicates with the interior of the screening box (1). The second connecting rod (18) slides in connection with the inner wall of the rectangular through hole (20). One end of the second connecting rod (18) extends outward to the outside of the rectangular through hole (20), and the outer end of the second connecting rod (18) is rounded.

3. A multi-layered vibrating tea screening apparatus as claimed in claim 1, wherein: Two mutually symmetrical first mounting plates (21) and second mounting plates (22) are fixedly connected to one side of the screening box (1). The upper end of the rotating shaft (23) is rotatably connected to the lower end of the first mounting plate (21) through a bearing, and the lower end of the rotating shaft (23) is rotatably connected to the upper end of the second mounting plate (22) through a bearing. The servo motor (25) is fixedly installed on the upper end of the first mounting plate (21). The upper end of the rotating shaft (23) extends upward to the outside of the first mounting plate (21) and is fixedly connected to the output end of the servo motor (25). The cam (24) is fixedly sleeved on the rotating shaft (23) and can periodically rotate to collide with the end of the corresponding second connecting rod (18).

4. A multi-layer vibrating screen for tea sieving according to claim 1, characterized in that: The screening frame (6) is fixedly connected to two symmetrical sliders (8). The inner walls of the two sides of the U-shaped frame (5) are provided with grooves (9) that are adapted to the sliders (8). The sliders (8) are slidably connected to the inner walls of the grooves (9). The lower ends of the inner walls of the two sides of the U-shaped frame (5) are fixedly connected to the placement plates (10). The lower ends of the screening frame (6) are placed on the upper ends of the placement plates (10).

5. A multi-layer vibrating screen for tea sieving according to claim 4, characterized in that: The placement plate (10) has a first threaded hole (11) at one end near the box door (26), and a matching second threaded hole (12) is provided at the lower end of the screening frame (6). A hand-tightening bolt (13) is threaded inside the first threaded hole (11), and one end of the hand-tightening bolt (13) is threaded inside the second threaded hole (12).

6. A multi-layer vibrating sieve for tea sieving according to claim 1, characterized in that: The upper end of the feed inlet (2) is fixedly connected to the feed channel (3), and the upper end of the feed channel (3) is fixedly connected to the feed hopper (4).

7. A multi-layer vibrating screen for tea sieving according to claim 1, characterized in that: The bottom end of the screening box (1) is fixedly connected to a ramp (27), the foot of the ramp (27) is close to the discharge port (28), and the outside of the discharge port (28) is fixedly connected to a discharge guide plate (29).

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