Screening device for tea leaves

Abstract

The utility model relates to the technical field of screening devices, and discloses a screening device for tea leaves, which solves the problems that the position of a feed port of an existing tea leaf screening device is fixed, so that the tea leaves are accumulated at the local position of a screen mesh when entering from the feed port, the local position of the screen mesh is easily blocked, and the tea leaves are not easy to uniformly spread. The device comprises a device body, three material distributing plates are fixedly installed in the middle of the interior of the device body, a sieve plate is arranged on the lower portion of the interior of the device body, a vibrating mechanism is arranged on the lower portion of the sieve plate, a hopper is arranged above the device body, a material pipe is fixedly installed at the bottom of the hopper, and a discharging valve is fixedly installed at the lower end of the material pipe. A protective cover is fixedly installed at the bottom of the material pipe, and a supporting frame is fixedly installed on one side of the device body. According to the tea leaf screening device, tea leaves can be evenly thrown on the screen, the tea leaves can be effectively and evenly spread, blocking of local positions of the screen is avoided, and the screening efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of screening devices, and specifically relates to a screening device for tea. Background Technique

[0002] A screening device for tea is a device that uses vibration, wind power or mechanical structures to classify and purify tea; its working principle usually involves separating tea by particle size through a vibrating screen mesh, or separating impurities of different weights from tea by means of wind power, and can also complete multi-stage screening through a combination of multiple screen meshes; this device is widely used in the tea processing industrial chain, covering impurity removal in the primary processing link (such as removing tea stalks and broken pieces), grade sorting in the refining stage (such as distinguishing bud leaves, one bud with one leaf, etc.), and quality inspection before packaging (removing discolored and damaged leaves); its advantages lie in improving production efficiency, reducing labor costs, and at the same time ensuring the standardization and consistency of tea quality, and is suitable for large-scale processing scenarios of various tea products such as green tea, black tea, and oolong tea;

[0003] The feeding port position of the existing tea screening device is fixed, resulting in the tea being concentrated and piled up at a local position of the screen mesh when entering from the feeding port, which is likely to cause blockage of the local position of the screen mesh, and it is not easy to evenly distribute the tea, thus reducing the screening efficiency. Content of the Utility Model

[0004] In view of the above situation, in order to overcome the defects of the existing technology, the utility model provides a screening device for tea, which effectively solves the problem that the feeding port position of the existing tea screening device is fixed, resulting in the tea being concentrated and piled up at a local position of the screen mesh when entering from the feeding port, which is likely to cause blockage of the local position of the screen mesh, and it is not easy to evenly distribute the tea.

[0005] To achieve the above object, the present utility model provides the following technical solution: A screening device for tea leaves, comprising a device main body. In the middle of the interior of the device main body, three material distribution plates are fixedly installed. Below the interior of the device main body, there is a sieve plate. Below the sieve plate, there is a vibration mechanism. Above the device main body, there is a hopper. At the bottom of the hopper, a material pipe is fixedly installed. At the lower end of the material pipe, a blanking valve is fixedly installed. At the bottom of the material pipe, a protective cover is fixedly installed. On one side of the device main body, a support frame is fixedly installed. At the lower part of one side of the support frame, a servo motor is fixedly installed. Inside the material pipe, there is an auger. At the output end of the servo motor, there is a transmission assembly. The transmission assembly is connected to the auger and the hopper in a transmission manner. When the servo motor operates, it outputs power to the auger and the hopper through the transmission assembly, causing the auger to rotate and discharge materials, and causing the hopper to drive the blanking valve to reciprocate horizontally through the material pipe. The transmission assembly includes a lower sprocket, which is fixedly installed at the output end of the servo motor. Above the lower sprocket, there is an upper sprocket. A chain is meshed and connected between the upper sprocket and the lower sprocket. One side of the upper sprocket is rotatably connected to the upper part of one side of the support frame. On the other side of the upper sprocket, a rotating bar is fixedly installed. At the upper end of one side of the rotating bar, a pin is rotatably installed. The surface of the pin is sleeved with a hollow bar. The upper end of the hollow bar is fixedly connected to the hopper. At the top of the hollow bar, a sliding sleeve is fixedly installed. In the middle of the sliding sleeve, a sliding rod is inserted. Both ends of the sliding rod are fixedly connected to the rear part of the device main body through support arms. One side of the lower sprocket is connected to a shaft rod through a universal joint. The surface of the shaft rod is rotatably connected to the surface of the protective cover through a shaft sleeve. The end of the shaft rod away from the universal joint extends into the interior of the protective cover and is fixedly installed with a driving bevel gear. The upper part of the surface of the driving bevel gear is meshed and connected with a driven bevel gear. The bottom of the driven bevel gear is rotatably connected to the inner bottom of the protective cover. The top of the driven bevel gear is fixedly connected to the bottom end of the auger. The lower end of the surface of the auger is rotatably connected to the lower part of the material pipe through a rotating sleeve.

[0006] Preferably, the vibration mechanism includes four springs, which are fixedly installed at the four corners of the bottom of the sieve plate. The bottoms of the four springs are fixedly connected to the inner wall of the device main body through fixed seats. On both sides of the bottom of the sieve plate, vibration motors are fixedly installed. At both ends of the sieve plate, sliders are fixedly installed. On both inner walls of the device main body, chute grooves are opened. The two sliders are slidably installed inside the two chute grooves.

[0007] Compared with the prior art, the beneficial effects of the present utility model are as follows: When in use, the operator puts the tea leaves into the interior of the hopper, and then starts the servo motor to drive the lower sprocket to rotate. When the lower sprocket rotates, it drives the upper sprocket to rotate through the chain. When the upper sprocket rotates, it drives the pin to rotate in the hollow bar through the rotating bar. When the pin rotates, it can convert the rotational motion into a linear reciprocating motion through the hollow bar, so that the hollow bar drives the hopper to reciprocate horizontally. When the hollow bar moves, it drives the sliding sleeve to slide along the surface of the sliding rod, increasing the stability of the hopper during movement. During the horizontal reciprocating movement of the hopper, it will drive the blanking valve to reciprocate horizontally through the material pipe;

[0008] While the lower sprocket rotates, it will drive the shaft rod to rotate inside the bushing through the universal joint, and the universal joint will continuously output power to the shaft rod as the material pipe moves. When the shaft rod rotates, it drives the driven bevel gear to rotate through the driving bevel gear. When the driven bevel gear rotates, it drives the auger to rotate inside the rotating sleeve. When the auger rotates, it discharges the tea in the hopper through the blanking valve to prevent the material pipe from being blocked. During the reciprocating movement of the blanking valve, the tea will be placed on the three distribution plates along the three distribution plates, and the tea will be evenly dropped on the sieve plate through the three distribution plates. At the same time, two vibration motors are started to make the sieve plate vibrate up and down by squeezing or stretching four springs. When the sieve plate vibrates up and down, it will drive two sliders to slide inside two chutes to ensure the stability of the sieve plate during vibration and enable the sieve plate to effectively screen the tea. This makes the tea screening device evenly sprinkle the tea on the sieve mesh, effectively spread the tea evenly, avoid clogging of local positions of the sieve mesh, and improve the screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0010] In the drawings:

[0011] Figure 1 is a schematic structural diagram of the screening device for tea of the present invention;

[0012] Figure 2 is a schematic internal structure diagram of the main body of the device of the present invention Figure 1 ;

[0013] Figure 3 is a schematic internal structure diagram of the main body of the device of the present invention Figure 2 ;

[0014] Figure 4 is a schematic internal structure diagram of the main body of the device of the present invention Figure 3 ;

[0015] Figure 5 is for the present invention Figure 3 is an enlarged structural schematic diagram at A in the present invention;

[0016] In the figure: 1. Device main body; 2. Rotating sleeve; 3. Material distribution plate; 4. Sieve plate; 5. Hopper; 6. Material pipe; 7. Discharge valve; 8. Protective cover; 9. Support frame; 10. Servo motor; 11. Screw conveyor; 12. Spring; 13. Fixed seat; 14. Vibration motor; 15. Slide block; 16. Slide groove; 17. Lower sprocket; 18. Upper sprocket; 19. Chain; 20. Pin; 21. Hollow bar; 22. Slide sleeve; 23. Slide rod; 24. Support arm; 25. Universal joint; 26. Shaft rod; 27. Bush; 28. Driving bevel gear; 29. Driven bevel gear; 30. Rotating bar. Detailed implementation manners

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] From Figures 1 to 5Given that, the utility model includes a device main body 1. Three material distribution plates 3 are fixedly installed in the middle of the device main body 1. A sieve plate 4 is provided at the lower part inside the device main body 1. A vibration mechanism is provided below the sieve plate 4. A hopper 5 is provided above the device main body 1. A material pipe 6 is fixedly installed at the bottom of the hopper 5. A blanking valve 7 is fixedly installed at the lower end of the material pipe 6. A protective cover 8 is fixedly installed at the bottom of the material pipe 6. A support frame 9 is fixedly installed on one side of the device main body 1. A servo motor 10 is fixedly installed at the lower part on one side of the support frame 9. An auger 11 is provided inside the material pipe 6. A transmission assembly is provided at the output end of the servo motor 10. The transmission assembly is in transmission connection with the auger 11 and the hopper 5. When the servo motor 10 operates, power is output to the auger 11 and the hopper 5 through the transmission assembly, so that the auger 11 rotates for blanking, and the hopper 5 drives the blanking valve 7 to reciprocate horizontally through the material pipe 6. The transmission assembly includes a lower sprocket 17. The lower sprocket 17 is fixedly installed at the output end of the servo motor 10. An upper sprocket 18 is provided above the lower sprocket 17. A chain 19 is meshed and connected between the upper sprocket 18 and the lower sprocket 17. One side of the upper sprocket 18 is rotatably connected to the upper part on one side of the support frame 9. A rotating bar 30 is fixedly installed on the other side of the upper sprocket 18. A pin 20 is rotatably installed at the upper end of one side of the rotating bar 30. A hollow bar 21 is sleeved on the surface of the pin 20. The upper end of the hollow bar 21 is fixedly connected to the hopper 5. A sliding sleeve 22 is fixedly installed at the top of the hollow bar 21. A sliding rod 23 is inserted into the middle of the sliding sleeve 22. Both ends of the sliding rod 23 are fixedly connected to the rear part of the device main body 1 through support arms 24. One side of the lower sprocket 17 is in transmission connection with a shaft rod 26 through a universal joint 25. The surface of the shaft rod 26 is rotatably connected to the surface of the protective cover 8 through a shaft sleeve 27. One end of the shaft rod 26 far from the universal joint 25 extends into the protective cover 8 and is fixedly installed with a driving bevel gear 28. The upper part on the surface of the driving bevel gear 28 is meshed and connected with a driven bevel gear 29. The bottom of the driven bevel gear 29 is rotatably connected to the inner bottom of the protective cover 8. The top of the driven bevel gear 29 is fixedly connected to the bottom end of the auger 11. The lower end of the surface of the auger 11 is rotatably connected to the lower part of the material pipe 6 through a rotating sleeve 2.

[0019] During use, the operator puts the tea into the hopper 5, and then starts the servo motor 10 to drive the lower sprocket 17 to rotate. When the lower sprocket 17 rotates, it drives the upper sprocket 18 to rotate through the chain 19. When the upper sprocket 18 rotates, it drives the pin 20 to rotate in the hollow bar 21 through the rotating bar 30. When the pin 20 rotates, the rotational motion can be converted into a linear reciprocating motion through the hollow bar 21, so that the hollow bar 21 drives the hopper 5 to reciprocate horizontally. When the hollow bar 21 moves, it drives the sliding sleeve 22 to slide along the surface of the sliding rod 23, increasing the stability of the hopper 5 during movement. During the reciprocating horizontal movement of the hopper 5, it drives the blanking valve 7 to reciprocate horizontally through the material pipe 6; during the reciprocating movement of the blanking valve 7, the tea is put on the three material distribution plates 3 along the three material distribution plates 3, and the tea is evenly dropped on the sieve plate 4 through the three material distribution plates 3;

[0020] While the lower sprocket 17 rotates, it will also drive the shaft rod 26 to rotate inside the shaft sleeve 27 through the universal joint 25, and the universal joint 25 will continuously output power to the shaft rod 26 as the material pipe 6 moves. When the shaft rod 26 rotates, it drives the driven bevel gear 29 to rotate through the driving bevel gear 28. When the driven bevel gear 29 rotates, it drives the auger 11 to rotate along the inside of the rotating sleeve 2. When the auger 11 rotates, the tea leaves in the hopper 5 are discharged through the feeding valve 7 to prevent the material pipe 6 from being blocked; so that the tea screening device can evenly sprinkle the tea leaves on the sieve, effectively spread the tea leaves evenly, avoid blockage of local positions of the sieve, and improve the screening efficiency.

[0021] The vibration mechanism includes four springs 12. The four springs 12 are fixedly installed at the four corners of the bottom of the sieve plate 4. The bottoms of the four springs 12 are fixedly connected to the inner wall of the device main body 1 through the fixed seats 13. Vibration motors 14 are fixedly installed on both sides of the bottom of the sieve plate 4. Sliders 15 are fixedly installed at both ends of the sieve plate 4. Chutes 16 are opened on the inner walls at both ends of the device main body 1. The two sliders 15 are slidably installed inside the two chutes 16.

[0022] Start the two vibration motors 14 at the same time to make the sieve plate 4 squeeze or stretch the four springs 12 to vibrate up and down. When the sieve plate 4 vibrates up and down, it will drive the two sliders 15 to slide along the inside of the two chutes 16, ensuring the stability of the sieve plate 4 during vibration, and enabling the sieve plate 4 to effectively screen the tea leaves.

Claims

1. A screening device for tea leaves, comprising a device main body (1), characterized in that: Inside the middle part of the device main body (1), three material distribution plates (3) are fixedly installed. Below the material distribution plates (3) inside the device main body (1), a sieve plate (4) is provided. Below the sieve plate (4), a vibration mechanism is provided. Above the device main body (1), a hopper (5) is provided. At the bottom of the hopper (5), a material pipe (6) is fixedly installed. At the lower end of the material pipe (6), a blanking valve (7) is fixedly installed. At the bottom of the material pipe (6), a protective cover (8) is fixedly installed. On one side of the device main body (1), a support frame (9) is fixedly installed. At the lower part on one side of the support frame (9), a servo motor (10) is fixedly installed. Inside the material pipe (6), a screw conveyor (11) is provided. At the output end of the servo motor (10), a transmission assembly is provided. The transmission assembly is in transmission connection with the screw conveyor (11) and the hopper (5). When the servo motor (10) operates, power is output to the screw conveyor (11) and the hopper (5) through the transmission assembly, so that the screw conveyor (11) rotates for blanking, and the hopper (5) drives the blanking valve (7) to reciprocate horizontally through the material pipe (6). The transmission assembly includes a lower sprocket (17). The lower sprocket (17) is fixedly installed at the output end of the servo motor (10). Above the lower sprocket (17), an upper sprocket (18) is provided. A chain (19) is meshed and connected between the upper sprocket (18) and the lower sprocket (17). One side of the upper sprocket (18) is rotatably connected to the upper part on one side of the support frame (9). On the other side of the upper sprocket (18), a rotating bar (30) is fixedly installed. At the upper end of one side of the rotating bar (30), a pin (20) is rotatably installed. A hollow bar (21) is sleeved on the surface of the pin (20). The upper end of the hollow bar (21) is fixedly connected to the hopper (5). At the top of the hollow bar (21), a sliding sleeve (22) is fixedly installed. A sliding rod (23) is inserted into the middle of the sliding sleeve (22). Both ends of the sliding rod (23) are fixedly connected to the rear part of the device main body (1) through support arms (24). One side of the lower sprocket (17) is in transmission connection with a shaft rod (26) through a universal joint (25). The surface of the shaft rod (26) is rotatably connected to the surface of the protective cover (8) through a shaft sleeve (27). One end of the shaft rod (26) far from the universal joint (25) extends into the protective cover (8) and is fixedly installed with a driving bevel gear (28). The upper part on the surface of the driving bevel gear (28) is meshed and connected with a driven bevel gear (29). The bottom of the driven bevel gear (29) is rotatably connected to the inner bottom of the protective cover (8). The top of the driven bevel gear (29) is fixedly connected to the bottom end of the screw conveyor (11). The lower end of the surface of the screw conveyor (11) is rotatably connected to the lower part of the material pipe (6) through a rotating sleeve (2).

2. The screening device for tea according to claim 1, wherein: The vibration mechanism includes four springs (12), and the four springs (12) are fixedly installed at the four corners of the bottom of the sieve plate (4). The bottoms of the four springs (12) are fixedly connected to the inner wall of the device main body (1) through fixing seats (13). Vibration motors (14) are fixedly installed on both sides of the bottom of the sieve plate (4). Sliders (15) are fixedly installed at both ends of the sieve plate (4). Chute grooves (16) are provided on the inner walls at both ends of the device main body (1), and the two sliders (15) are slidably installed inside the two chute grooves (16).

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