Tea screening device for tea planting

Abstract

The utility model relates to the technical field of tea processing, in particular to a tea screening device for tea planting, which comprises a screening box body, a screen component arranged in the screening box body and a feeding component arranged at one end of the inner wall of the screening box body, the transverse driving mechanism is arranged on one side of the screening box body; the U-shaped moving frame is connected with the transverse driving mechanism; the blowing mechanism is arranged on the inner wall of the U-shaped moving frame and acts on the upper surface of the screen mesh assembly; the compressed air supply mechanism and the water supply mechanism are arranged on the upper side of the U-shaped moving frame and are arranged at intervals; the compressed air supply mechanism and the water supply mechanism are both communicated with the blowing mechanism, and the transverse driving mechanism is located on one side of the feeding assembly; the device can freely switch double cleaning modes according to actual production requirements. The tea leaf residue in the pores of the screening net can be cleared no matter daily debris is quickly blown or stubborn tea stains are deeply cleaned, so that the subsequent tea leaf screening efficiency is improved.

Description

Technical Field

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

[0002] China is the birthplace of tea, and its uses have expanded over time. Early tea was primarily used for sacrificial purposes; in the late Spring and Autumn Period, it gradually became a dish; by the mid-Western Han Dynasty, it had developed into a medicinal herb; and by the late Western Han Dynasty, it had become a court beverage. It wasn't until the Western Jin Dynasty that it entered ordinary households and became a daily drink. Archaeological discoveries at the Tianluoshan site in Yuyao, Zhejiang Province, reveal traces of artificial tea cultivation dating back over 6,000 years. Today, in tea processing, sorting devices are an indispensable and crucial piece of equipment.

[0003] Existing tea sorting devices, after prolonged operation, accumulate tea dust, broken leaves, and other residues on the screen surface and in the mesh gaps due to the small size and easy adhesion of tea fragments. This not only slows down the speed at which tea leaves pass through the screen but also prevents some qualified tea leaves from being sorted smoothly due to blockage, ultimately resulting in a decrease in overall sorting efficiency of over 30%. However, existing cleaning methods are limited and cannot meet both daily debris blowing and deep cleaning needs. In daily production, light debris accumulation can be removed simply by pneumatic blowing, but when stubborn tea stains adhere to the screen or clumps form due to high humidity, simple air blowing or water washing methods are ineffective, thus affecting the continuity and quality stability of tea sorting. Utility Model Content

[0004] The purpose of this invention is to provide a tea screening device for tea cultivation, which solves the problem that the screen of the existing device is easily clogged by fine sticky debris during operation, and that a single cleaning method is insufficient to remove stubborn stains, making it unsuitable for different pollution scenarios and affecting the continuity of production and quality.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tea screening device for tea cultivation, comprising a screening box, a screen assembly disposed within the screening box, a feeding assembly disposed on one end of the inner wall of the screening box, and further comprising a transverse drive mechanism disposed on one side of the screening box, a U-shaped moving frame connected to the transverse drive mechanism, a blowing mechanism disposed on the inner wall of the U-shaped moving frame and acting on the upper surface of the screen assembly, and a compressed air supply mechanism and a water supply mechanism disposed on the upper side of the U-shaped moving frame and spaced apart, wherein the compressed air supply mechanism and the water supply mechanism are both connected to the blowing mechanism, the transverse drive mechanism is located on one side of the feeding assembly, the U-shaped moving frame can move horizontally along the length direction of the screening box via the transverse drive mechanism, and one inner side of the U-shaped moving frame is slidably engaged with the other side of the screening box.

[0006] Furthermore, the U-shaped mobile frame includes two spaced columns, a horizontal plate on the upper side of the columns, and a guide block on the inner wall of one of the columns.

[0007] Furthermore, a linear slide groove is provided on the other side of the screening box, and the guide block slides in cooperation with the linear slide groove; the transverse drive mechanism includes an installation groove on one side of the screening box, a threaded rod rotatably connected in the installation groove, a second motor located at one end of the installation groove and whose output end is connected to one end of the threaded rod, and another column threaded in cooperation with the threaded rod and sliding in cooperation with the inner wall of the installation groove.

[0008] Furthermore, the spraying mechanism includes a horizontal pipe located between two columns and above the screening box, multiple nozzles that communicate with the bottom of the outer wall of the horizontal pipe and are spaced apart along the axial direction of the horizontal pipe, a connecting pipe that communicates with the top of the outer wall of the horizontal pipe, and a tee connector that communicates with one end of the connecting pipe.

[0009] Furthermore, the compressed air supply mechanism includes an air pump located on the upper side of the horizontal plate and an air pipe connected to the air pump outlet port. One end of the air pipe passes through the horizontal plate and is connected to one end of a tee connector.

[0010] Furthermore, the water supply mechanism includes a water pump located on the upper side of the horizontal plate, a water pipe connector connected to the water pump inlet port, and a water delivery pipe connected to the water pump outlet port. One end of the water delivery pipe is connected to the other end of the tee connector. Solenoid valves are provided on the outer walls of both the water delivery pipe and the air pipe.

[0011] Furthermore, two arc-shaped sliding grooves are provided on both sides of the interior of the screening box; the screen assembly includes a screening screen inside the screening box, side baffles respectively provided on the front and rear ends of the upper side of the screening screen, a rotating shaft rotatably connected inside the screening box, a first motor provided on one side of the screening box, a plurality of connecting seats provided on the rotating shaft and spaced apart, and sliders respectively provided on both sides of the screening screen. The sliders are slidably engaged with the corresponding arc-shaped sliding grooves, and the upper sides of the plurality of connecting seats are connected to the lower middle part of the screening screen.

[0012] Furthermore, a conical hopper is connected to the lower side of the screening box, and a discharge port is connected to the lower end of the conical hopper. Two vibrating motors are arranged at intervals on the outer side of the conical hopper. Springs are provided at the four corners of the lower side of the screening box, and one end of each spring is connected to a support leg. A reinforcing crossbar is provided between two adjacent support legs. A discharge port is provided at one end of the screening box. An L-shaped discharge plate is provided on the inner wall of the screening box, corresponding to one end of the screening screen. One end of the L-shaped discharge plate passes through the discharge port and extends to the outside of the screening box. Baffle plates are connected to both sides of the L-shaped discharge plate, and one end of each baffle plate is connected to one end of the screening box.

[0013] Furthermore, the feeding assembly includes a connecting plate disposed on one end of the inner wall of the screening box and a feeding hopper disposed on the connecting plate. The outlet of the feeding hopper extends to the bottom of the connecting plate and corresponds to the top of the screening screen.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model cleans the screening screen by utilizing the coordinated action of a transverse drive mechanism, a U-shaped moving frame, a blowing mechanism, a compressed air supply mechanism, and a water supply mechanism to clean the screening screen inside the screening box according to actual needs. The device has the function of flexibly switching between two cleaning modes based on actual production requirements. By adapting to different cleaning scenarios, it can remove tea debris from the screening screen pores, thereby improving the efficiency of subsequent tea screening.

[0016] 2. When adjusting the tilt angle of the screening screen, the present invention uses the coordinated action of the first motor, rotating shaft, connecting seat, arc-shaped slide groove and slider to drive the screening screen to tilt to the required angle; thereby, by adjusting the tilt angle of the screening screen, the flow speed of tea can be controlled, adapting to the differences in shape and size of tea of ​​different varieties and processing stages, avoiding accumulation, ensuring that the tea is evenly spread on the screen surface, and improving the screening effect. Attached Figure Description

[0017] Figure 1 This is a cross-sectional schematic diagram of the tea sorting device for tea cultivation according to the present invention.

[0018] Figure 2 This is a cross-sectional view of the U-shaped movable frame of this utility model;

[0019] Figure 3 This is a rear view schematic diagram of the tea sorting device for tea cultivation according to the present invention.

[0020] Figure 4 This is a cross-sectional schematic diagram of the transverse drive mechanism of this utility model;

[0021] Figure 5 This is a side view of the U-shaped movable frame of this utility model;

[0022] Figure 6 This is a system control block diagram of the tea sorting device for tea cultivation according to this utility model.

[0023] In the diagram: 1. Screening box; 2. Conical hopper; 3. Discharge port; 4. Vibrating motor; 5. Spring; 6. Support leg; 7. Reinforcing crossbar; 8. Connecting plate; 9. Feed hopper; 10. Arc-shaped chute; 11. Screening screen; 12. Connecting seat; 13. Rotating shaft; 14. First motor; 15. Discharge port; 16. L-shaped discharge plate; 17. Baffle plate; 18. U-shaped moving frame; 19. Blowing mechanism; 20. Compressor 21. Air supply mechanism; 22. Water supply mechanism; 23. Lateral drive mechanism; 24. Column; 25. Horizontal plate; 26. Guide block; 27. T-joint; 28. Connecting pipe; 29. ​​Horizontal pipe; 30. Nozzle; 31. Air pump; 32. Air pipe; 33. Water pump; 34. Water delivery pipe; 35. Water pipe joint; 36. Mounting slot; 37. Second motor; 38. Threaded rod; 39. Solenoid valve; 30. Side baffle. Detailed Implementation

[0024] Please see Figure 1-6 A tea screening device for tea cultivation includes a screening box 1, a screen assembly disposed inside the screening box 1, a feeding assembly disposed on one end of the inner wall of the screening box 1, a transverse drive mechanism 22 disposed on one side of the screening box 1, a U-shaped moving frame 18 connected to the transverse drive mechanism 22, a blowing mechanism 19 disposed on the inner wall of the U-shaped moving frame 18 and acting on the upper surface of the screen assembly, a compressed air supply mechanism 20 and a water supply mechanism 21 disposed on the upper side of the U-shaped moving frame 18 and spaced apart, the compressed air supply mechanism 20 and the water supply mechanism 21 are both connected to the blowing mechanism 19, the transverse drive mechanism 22 is located on one side of the feeding assembly, the U-shaped moving frame 18 can move horizontally along the length direction of the screening box 1 through the transverse drive mechanism 22, and one side of the inner side of the U-shaped moving frame 18 is slidably engaged with the other side of the screening box 1.

[0025] The U-shaped moving frame 18 includes two spaced columns 23, a horizontal plate 24 fixedly connected to the upper side of the columns 23, and a guide block 25 fixedly connected to the inner wall of one of the columns 23. A linear chute is provided on the other side of the screening box 1, and the guide block 25 slides in cooperation with the linear chute. The transverse drive mechanism 22 includes a mounting groove 35 installed on one side of the screening box 1, a threaded rod 37 rotatably connected to the mounting groove 35 via a bearing, a second motor 36 installed at one end of the mounting groove 35 and whose output end is connected to one end of the threaded rod 37, and another column 23 is threadedly engaged with the threaded rod 37 and slides in cooperation with the inner wall of the mounting groove 35. The spraying mechanism 19 includes a horizontal pipe 28 fixedly connected between two columns 23 and located above the screening box 1, a plurality of nozzles 29 communicating with the bottom of the outer wall of the horizontal pipe 28 and spaced apart along the axial direction of the horizontal pipe 28, a connecting pipe 27 communicating with the top of the outer wall of the horizontal pipe 28, and a three-way connector 26 communicating with one end of the connecting pipe 27. The plurality of nozzles 29 are vertically installed on the bottom of the outer wall of the horizontal pipe 28 through quick-release connectors.

[0026] The compressed air supply mechanism 20 includes an air pump 30 installed on the upper side of the horizontal plate 24 and an air pipe 31 connected to the air outlet port of the air pump 30. One end of the air pipe 31 passes through the horizontal plate 24 and is connected to one end of the tee connector 26. The water supply mechanism 21 includes a water pump 32 installed on the upper side of the horizontal plate 24, a water pipe connector 34 connected to the water inlet port of the water pump 32, and a water delivery pipe 33 connected to the water outlet port of the water pump 32. One end of the water delivery pipe 33 is connected to the other end of the tee connector 26. The outer walls of both the water delivery pipe 33 and the air pipe 31 are equipped with solenoid valves 38. One end of the water pipe connector 34 is connected to an external cleaning water hose to form a water supply channel to ensure the supply of cleaning water.

[0027] Two arc-shaped sliding grooves 10 are provided on both sides of the interior of the screening box 1. The axis of the two arc-shaped sliding grooves 10 on the same side is coaxial with the axis of the rotating shaft 13. The screen assembly includes a screening screen 11 inside the screening box 1, side baffles 39 connected to the front and rear ends of the upper side of the screening screen 11, a rotating shaft 13 rotatably connected to the interior of the screening box 1 via bearings, a first motor 14 on one side of the screening box 1, multiple connecting seats 12 arranged at intervals on the rotating shaft 13, and cylindrical sliders on both sides of the screening screen 11. The sliders slide in cooperation with the corresponding arc-shaped sliding grooves 10. The upper side of the multiple connecting seats 12 is connected to the lower middle part of the screening screen 11. The first motor 14 and the second motor 36 are both stepper motors.

[0028] The lower side of the screening box 1 is connected to a conical hopper 2, and the lower end of the conical hopper 2 is connected to a discharge port 3. Two vibrating motors 4 are arranged at intervals on the outer side of the conical hopper 2. Springs 5 ​​are provided on the four corners of the lower side of the screening box 1. One end of the spring 5 is connected to a support leg 6. A reinforcing crossbar 7 is provided between two adjacent support legs 6. One end of the screening box 1 is provided with a discharge port 15. The inner wall of the screening box 1 is provided with an L-shaped discharge plate 16 corresponding to one end of the screening screen 11. One end of the L-shaped discharge plate 16 passes through the discharge port 15 and extends to the outside of the screening box 1. Baffle plates 17 are connected to both sides of the L-shaped discharge plate 16. One end of each baffle plate 17 is connected to one end of the screening box 1.

[0029] The feeding assembly includes a connecting plate 8 located on one end of the inner wall of the screening box 1 and a feeding hopper 9 located on the connecting plate 8. The outlet of the feeding hopper 9 extends to the bottom of the connecting plate 8 and is located above the screening screen 11. The outlet width of the feeding hopper 9 is the same as the width of the screening screen 11.

[0030] A PLC controller is installed on one side of the screening box 1. The PLC controller is electrically connected to the first motor 14, the second motor 36, two solenoid valves 38, the air pump 30, the water pump 32 and two vibrating motors 4, so as to realize the control and coordinated scheduling of the operating status of each component.

[0031] Working process and principle: When operating this device, the first motor 14 is started by the PLC controller, which drives the rotating shaft 13 to rotate multiple connecting seats 12, causing the screening screen 11 to tilt to the required angle. During this process, the four sliders slide synchronously along the arc-shaped groove 10 to ensure smooth adjustment. By adjusting the tilt angle of the screening screen 11, the flow speed of the tea leaves can be controlled, adapting to the differences in shape and size of tea leaves of different varieties and processing stages, avoiding accumulation, ensuring that the tea leaves are evenly spread on the screen surface, and improving the screening effect.

[0032] During tea sorting, the operator starts two vibrating motors 4 using a PLC controller. The tea leaves to be sorted are then poured into the feed hopper 9, falling onto the screening screen 11. At this point, the two vibrating motors 4, along with the springs 5 ​​connected to the four support legs 6 and the screening box 1, work together to vibrate the entire screening box 1 and the screening screen 11, achieving vibratory screening of the tea leaves. During this process, fine tea leaves pass through the screen and fall into the conical hopper 2, then are discharged through the outlet 3; while the sorted tea leaves fall onto the L-shaped discharge plate 16 and are finally discharged outside the screening box 1. Simultaneously, two baffles 17 prevent the tea leaves from falling to the ground.

[0033] To ensure stable screening performance, the equipment must be stopped and the screening screen 11 cleaned every hour of operation. During cleaning, the operator simultaneously starts the second motor 36 and the air pump 30 via the PLC controller, and opens the solenoid valve 38 on the air pipe 31. The second motor 36 drives the threaded rod 37 to rotate, and the column 23, which is threadedly engaged with the threaded rod 37, moves horizontally along the inside of the mounting groove 35. At the same time, the guide block 25, connected to another column 23, slides horizontally within the linear chute. Driven by the two columns 23 and the horizontal plate 24, the horizontal pipe 28, the air pump 30, and the water pump 32 move horizontally along the length of the screening box 1. During this period, the compressed air output by the high-pressure air pump 30 enters the horizontal pipe 28 through the air pipe 31, the three-way connector 26, and the connecting pipe 27, and then sprays airflow through multiple nozzles 29 into the mesh openings of the screening screen 11, thereby removing tea leaves and debris. For deep cleaning, the water pump 32 can be started simultaneously and the solenoid valve 38 on the water supply pipe 33 can be opened during the above operation. At this time, the hose connected to the water source will deliver water through the water pipe joint 34 and into the three-way joint 26 via the water supply pipe 33. Under the coordinated action of the air pump 30 and the water pump 32, water and air mix to form a high-pressure water mist, which is sprayed out through multiple nozzles 29 to achieve deep cleaning of the screening screen 11. This device can flexibly select two cleaning modes according to actual needs to remove tea leaves from the pores of the screening screen 11, thereby improving the efficiency of subsequent tea sieving.

[0034] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tea screening device for tea cultivation, comprising a screening box (1), a screen assembly disposed within the screening box (1), and a feeding assembly disposed on one end of the inner wall of the screening box (1), characterized in that, It also includes a transverse drive mechanism (22) on one side of the screening box (1), a U-shaped moving frame (18) connected to the transverse drive mechanism (22), a jetting mechanism (19) on the inner wall of the U-shaped moving frame (18) and acting on the upper surface of the screen assembly, a compressed air supply mechanism (20) and a water supply mechanism (21) arranged at intervals on the upper side of the U-shaped moving frame (18). The compressed air supply mechanism (20) and the water supply mechanism (21) are both connected to the jetting mechanism (19). The transverse drive mechanism (22) is located on one side of the feeding assembly. The U-shaped moving frame (18) can move horizontally along the length of the screening box (1) through the transverse drive mechanism (22). The inner side of the U-shaped moving frame (18) slides with the other side of the screening box (1).

2. The tea sorting device according to claim 1, characterized in that, The U-shaped mobile frame (18) includes two spaced columns (23), a horizontal plate (24) on the upper side of the columns (23), and a guide block (25) on the inner wall of one column (23).

3. The tea sorting device according to claim 2, characterized in that, The screening box (1) is provided with a straight slide groove on the other side, and the guide block (25) slides in cooperation with the straight slide groove; the transverse drive mechanism (22) includes an installation groove (35) on one side of the screening box (1), a threaded rod (37) rotatably connected in the installation groove (35), a second motor (36) provided at one end of the installation groove (35) and whose output end is connected to one end of the threaded rod (37), and another column (23) threaded in cooperation with the threaded rod (37) and sliding in cooperation with the inner wall of the installation groove (35).

4. The tea sorting device according to claim 2, characterized in that, The spraying mechanism (19) includes a horizontal pipe (28) located between two columns (23) and above the screening box (1), a plurality of nozzles (29) that are connected to the bottom of the outer wall of the horizontal pipe (28) and spaced apart along the axial direction of the horizontal pipe (28), a connecting pipe (27) that is connected to the top of the outer wall of the horizontal pipe (28), and a three-way connector (26) that is connected to one end of the connecting pipe (27).

5. The tea sorting device according to claim 4, characterized in that, The compressed air supply mechanism (20) includes an air pump (30) located on the upper side of the horizontal plate (24) and an air pipe (31) connected to the air outlet port of the air pump (30). One end of the air pipe (31) passes through the horizontal plate (24) and is connected to one end of the three-way connector (26).

6. The tea sorting device according to claim 5, characterized in that, The water supply mechanism (21) includes a water pump (32) located on the upper side of the horizontal plate (24), a water pipe connector (34) connected to the water inlet port of the water pump (32), and a water delivery pipe (33) connected to the water outlet port of the water pump (32). One end of the water delivery pipe (33) is connected to the other end of the three-way connector (26). The outer walls of the water delivery pipe (33) and the air pipe (31) are equipped with solenoid valves (38).

7. The tea sorting device according to claim 1, characterized in that, The screening box (1) has two arc-shaped sliding grooves (10) on both sides inside; the screen assembly includes a screening screen (11) inside the screening box (1), side baffles (39) on the front and rear ends of the upper side of the screening screen (11), a rotating shaft (13) rotatably connected inside the screening box (1), a first motor (14) on one side of the screening box (1), multiple connecting seats (12) arranged at intervals on the rotating shaft (13), and sliders on both sides of the screening screen (11). The sliders are slidably engaged with the corresponding arc-shaped sliding grooves (10), and the upper sides of the multiple connecting seats (12) are connected to the lower middle part of the screening screen (11).

8. The tea sorting device according to claim 7, characterized in that, The lower side of the screening box (1) is connected to a conical hopper (2), and the lower end of the conical hopper (2) is connected to a discharge port (3). Two vibrating motors (4) are arranged at intervals on the outer side of the conical hopper (2). Springs (5) are provided on the four corners of the lower side of the screening box (1). One end of the spring (5) is connected to a support leg (6). A reinforcing crossbar (7) is provided between two adjacent support legs (6). One end of the screening box (1) is provided with a discharge port (15). The inner wall of the screening box (1) is provided with an L-shaped discharge plate (16) corresponding to one end of the screening screen (11). One end of the L-shaped discharge plate (16) passes through the discharge port (15) and extends to the outside of the screening box (1). Both sides of the L-shaped discharge plate (16) are connected to baffle plates (17). One end of each baffle plate (17) is connected to one end of the screening box (1).

9. The tea sorting device according to claim 7, characterized in that, The feeding assembly includes a connecting plate (8) on one end of the inner wall of the screening box (1) and a feeding hopper (9) on the connecting plate (8). The outlet of the feeding hopper (9) extends to the bottom of the connecting plate (8) and is located above the screening screen (11).

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