Drum-type fresh tea leaf grader

Abstract

A drum-type fresh tea leaf grader relates to the technical field of tea leaf processing equipment and comprises a rack, a drum, a driving device and an inclination angle adjusting device, a feed hopper is arranged at one end, corresponding to a feed port of the drum, of the rack, a discharge hopper is arranged at one end, corresponding to a discharge port of the drum, of the rack, and a plurality of screening discharge hoppers are arranged on the rack below the drum. Inclination angle directional trundles are arranged on the two sides of the middle of the bottom of the machine frame respectively, the roller is sequentially provided with a plurality of screening nets with the screening hole diameters distributed from small to large, the driving device comprises a gear motor fixed to the machine frame and two dragging wheels, and the inclination angle adjusting device is located below the feeding hopper. Comprising a support, a lead screw fixed to the top of the support and a turbine lead screw lifter on the lead screw, and the turbine lead screw lifter is fixed to a rack. The stainless steel screens with different aperture specifications are adopted, the stainless steel screens can be installed at corresponding roller positions according to different fresh leaf raw material requirements, the angle of the roller body is adjustable, the adaptability is high, and the production rate is high.

Description

Technical Field

[0001] This utility model relates to the technical field of tea processing equipment, and in particular to a drum-type fresh tea leaf grading machine. Background Technology

[0002] China is the birthplace of tea and the cradle of tea culture. After thousands of years of development, based on processing techniques and tea varieties, a tea system has been formed, represented by the six major tea categories of China. Tea processing, also known as "tea making," involves processing fresh tea leaves through various steps to create various semi-finished or finished tea products. Among these, the grading of fresh tea leaves is a crucial step in tea processing. Through scientific grading, the potential value of fresh tea leaves is maximized, while simultaneously supporting the standardization and high-quality development of the tea industry.

[0003] Currently, traditional fresh leaf grading machines use a frustum-shaped drum structure, with the feed end diameter smaller than the discharge end. The drum is made of woven bamboo strips, resulting in uneven sieve holes and low production efficiency. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing devices and provide a drum-type tea leaf grading machine. It uses stainless steel screens with different aperture specifications and can be installed in the corresponding drum positions according to the requirements of different fresh leaf raw materials. The angle of the drum body is adjustable, making it highly adaptable and productive.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A drum-type tea leaf grading machine includes a frame, a drum, a drive unit, and an angle adjustment device. The drum is located at the top of the frame, with a feed inlet and a discharge outlet at each end. A feed hopper is located at the end of the frame corresponding to the drum's feed inlet, and a discharge hopper and a bearing seat are located at the end corresponding to the drum's discharge outlet. Several sieving hoppers separated by partitions are arranged on the frame below the drum. Angle-adjustable casters are located on both sides of the bottom center of the frame.

[0007] The drum is a cylindrical shape with a uniform diameter. From the inlet to the outlet, it is equipped with several sections of sieves with progressively larger apertures, all made of stainless steel. A support ring is located on the outer side of the drum at the inlet end, and a central rotating shaft is located in the middle of the drum at the outlet end. The inner end of the central rotating shaft is fixedly connected to the drum via a number of evenly distributed support rods, while the outer end is rotatably connected to a bearing with a seat. The mixed fresh leaves to be graded enter the drum through the inlet via the feed hopper. Based on the size of the leaves, they pass through the sieves of different apertures and fall into the grading hopper below, completing the grading process. Leaves that do not pass through the sieves flow out of the feed hopper.

[0008] The drive unit includes a geared motor fixed to the frame and two rollers. The roller's support ring abuts against the two rollers. A drive sprocket is located at the output end of the geared motor, and driven sprockets are distributed on one side of each of the two rollers. The drive and driven sprockets are connected by a chain drive. The roller is rotatably mounted on the frame via the two rollers and a bearing seat. When the geared motor operates, the drive sprocket rotates, driving the driven sprockets to rotate via the chain. The rollers rotate synchronously, causing the support ring on them to rotate, and the roller rotates accordingly, allowing the fresh leaves inside the roller to tumble and be easily graded.

[0009] The tilt adjustment device is located below the feed hopper and includes a support, a lead screw fixed to the top of the support, and a worm gear screw jack on the lead screw. The worm gear screw jack is fixed to the frame. The frame is placed on the ground via tilt-oriented casters and the tilt adjustment device. The worm gear screw jack can move to different height positions on the lead screw, realizing the angle adjustment of the frame and the rollers on it along the tilt-oriented casters.

[0010] Preferably, a roller guard is provided on the frame outside the tug wheel to provide safety protection.

[0011] Preferably, the tilt adjustment device has two components, and the two worm gear screw jacks are connected by a synchronous connecting shaft, with couplings provided at both ends of the synchronous connecting shaft.

[0012] Preferably, the screw jack is equipped with a handwheel, which can be used to adjust the angle.

[0013] Preferably, the support includes a lower support and an upper support, which are rotatably connected by a bolt and nut assembly, and the angle of the upper support changes accordingly when the angle is adjusted.

[0014] Preferably, a tea-blocking device is also included. This device comprises a tea-blocking plate fixed to the frame on the side of the drum, with a tea-blocking collection trough located below the plate. Slide rails, fixed to the frame, are located at both ends of the bottom of the tea-blocking collection trough. The length of the tea-blocking plate covers the length of the drum. As the drum rotates, some fresh leaves will be flung away but will not fall into the screening hopper below. The tea-blocking plate can block the flung leaves, which will fall into the tea-blocking collection trough. Once a certain amount has been collected, the tea-blocking collection trough can be slid out along the slide rails to empty the leaves. Handles are provided on both sides of the tea-blocking collection trough for easy handling.

[0015] Preferably, there are multiple tea-collecting troughs, which correspond to sieves with different sieve apertures, and the tea leaves in the tea-collecting troughs are also graded.

[0016] Preferably, a tea conveyor is provided on one side of the feed hopper to meet the requirements of automatic continuous production.

[0017] The beneficial effects of this utility model are as follows: 1. The cylindrical drum structure with the same diameter for sampling and the stainless steel screen with different aperture specifications can be installed in the corresponding drum position according to the requirements of different fresh leaf raw materials. The drum angle is adjustable, making it highly adaptable and productive.

[0018] 2. The tea-blocking device can prevent fresh leaves from being flung away and falling to the ground, while also enabling grading and avoiding repeated processing;

[0019] 3. The tea feeder can be equipped with a tea conveyor to meet the requirements of automatic and continuous production. Attached Figure Description

[0020] Figure 1 This is the main view structural diagram of this utility model;

[0021] Figure 2 This is a side view of the structure of this utility model;

[0022] Figure 3 This is a front view of the roller structure in this utility model;

[0023] Figure 4 This is a side view of the roller structure in this utility model;

[0024] Figure 5 This is a structural diagram of the tilt adjustment device in this utility model.

[0025] Explanation of key component symbols in the diagram: 10. Frame; 11. Feed hopper; 12. Discharge hopper; 13. Bearing with seat; 14. Screening hopper; 15. Inclined caster; 16. Support roller guard;

[0026] 20. Drum; 21. Screening mesh; 22. Support ring; 23. Central rotating shaft; 24. Support rod;

[0027] Drive unit: 31. Gear motor; 32. Roller wheel; 33. Drive sprocket; 34. Driven sprocket;

[0028] 40. Inclination adjustment device; 41. Lead screw; 42. Worm screw jack; 43. Synchronous connecting shaft; 44. Coupling; 45. Handwheel; 46. Lower support; 47. Upper support; 48. Bolt and nut assembly;

[0029] Tea-blocking device: 51. Tea-blocking plate; 52. Tea-blocking collection trough; 53. Slide rail. Detailed Implementation

[0030] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0031] Example 1: As Figure 1-2As shown, the drum-type tea leaf grading machine includes a frame 10, a drum 20, a drive unit and an angle adjustment device 40. The drum 20 is located on the top of the frame 10 and has an inlet and an outlet at both ends.

[0032] A feed hopper 11 is provided at one end of the frame 10 corresponding to the feed inlet of the drum 20, and a discharge hopper 12 and a bearing 13 with a seat are provided at the other end corresponding to the discharge outlet of the drum 20. Several screening hoppers 14 separated by partitions are arranged on the frame 10 located below the drum 20. Inclined casters 15 are provided on both sides of the bottom center of the frame 10.

[0033] Combination Figure 3-4 As shown, the roller 20 is a cylindrical shape with equal diameter. From the feed inlet to the discharge outlet, there are several sections of screen mesh 21 with screen hole diameters distributed from small to large. A support ring 22 is provided on the outer side of the roller 20 at the feed inlet end. A central rotating shaft 23 is provided in the middle of the roller 20 at the discharge outlet end. The inner end of the central rotating shaft 23 is fixedly connected to the roller 20 through a certain number of evenly distributed support rods 24, and the outer end is rotatably connected to the bearing 13 with a seat.

[0034] The drive unit includes a geared motor 31 fixed to the frame 10 and two rollers 32. The support ring 22 of the roller 20 abuts against the two rollers 32. The output end of the geared motor 31 is provided with a drive sprocket 33, and driven sprockets 34 are distributed on one side of the two rollers 32. The drive sprocket 33 and the driven sprockets 34 are connected by chain drive. A roller guard 16 is provided on the frame 10 outside the rollers 32.

[0035] Combination Figure 5 As shown, the tilt adjustment device 40 is located below the feed hopper 11 and includes a support, a lead screw 41 fixed on the top of the support, and a turbine lead screw jack 42 on the lead screw 41. The turbine lead screw jack 42 is fixed to the frame 10.

[0036] Example 2: Combination Figure 5 As shown, based on Embodiment 1, the tilt adjustment device 40 has two components, and the two worm gear screw jacks 42 are connected by a synchronous connecting shaft 43, with couplings 44 respectively provided at both ends of the synchronous connecting shaft 43.

[0037] Example 3: Combination Figure 5 As shown, based on Embodiment 1 or Embodiment 2, the turbine screw jack 42 is equipped with a handwheel 45, and the support includes a lower support 46 and an upper support 47, which are rotatably connected by a bolt and nut assembly 48.

[0038] Example 4: Combination Figure 2As shown, based on Embodiment 1, Embodiment 2 or Embodiment 3, a tea-blocking device is also included. The tea-blocking device includes a tea-blocking plate 51 located on the side of the roller 20 and fixed on the frame 10. A tea-blocking collection groove 52 is provided below the tea-blocking plate 51, and slide rails 53 fixed to the frame 10 are provided at both ends of the bottom of the tea-blocking collection groove 52.

[0039] The number of tea-collecting troughs 52 is multiple, and they correspond to sieves 21 with different sieve hole diameters.

[0040] Example 5: Based on the above examples, a tea conveyor is provided on one side of the feed hopper 11 to achieve the requirements of automatic continuous production.

[0041] The above description is only a specific embodiment of the present utility model, but the structural features of the present utility model are not limited thereto. The present utility model can be used in similar products. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. A drum-type tea leaf grading machine, characterized in that: It includes a frame (10), a roller (20), a drive unit and an angle adjustment device (40). The roller (20) is located on the top of the frame (10) and has an inlet and an outlet at both ends respectively. A feed hopper (11) is provided at one end of the frame (10) corresponding to the feed inlet of the drum (20), and a discharge hopper (12) and a bearing (13) are provided at the other end corresponding to the discharge outlet of the drum (20). Several screening hoppers (14) separated by partitions are arranged on the frame (10) below the drum (20). Inclined casters (15) are provided on both sides of the bottom center of the frame (10). The drum (20) is a cylindrical shape with equal diameter. Several sieve screens (21) with screen hole diameters distributed from small to large are arranged sequentially from the feed inlet to the discharge outlet. A support ring (22) is arranged on the outside of the drum (20) at the feed inlet end. A central rotating shaft (23) is arranged in the middle of the drum (20) at the discharge outlet end. The inner end of the central rotating shaft (23) is fixedly connected to the drum (20) through a certain number of evenly distributed support rods (24), and the outer end is rotatably connected to the bearing (13) with a seat. The drive device includes a geared motor (31) fixed on the frame (10) and two rollers (32). The support ring (22) of the roller (20) abuts against the two rollers (32). The output end of the geared motor (31) is provided with a drive sprocket (33). Driven sprockets (34) are distributed on one side of the two rollers (32). The drive sprocket (33) and the driven sprockets (34) are connected by chain drive. The tilt adjustment device (40) is located below the feed hopper (11) and includes a support, a lead screw (41) fixed on the top of the support, and a turbine lead screw jack (42) on the lead screw (41). The turbine lead screw jack (42) is fixed to the frame (10).

2. The drum-type tea leaf grading machine according to claim 1, characterized in that: A roller guard (16) is provided on the frame (10) outside the tug (32).

3. The drum-type tea leaf grading machine according to claim 1, characterized in that: The tilt adjustment device (40) has two components, and the two screw jacks (42) are connected by a synchronous connecting shaft (43), with couplings (44) provided at both ends of the synchronous connecting shaft (43).

4. The drum-type tea leaf grading machine according to claim 3, characterized in that: The screw jack (42) is equipped with a handwheel (45).

5. The drum-type tea leaf grading machine according to claim 3, characterized in that: The support includes a lower support (46) and an upper support (47), which are rotatably connected by a bolt and nut assembly (48).

6. The drum-type tea leaf grading machine according to any one of claims 1-5, characterized in that: It also includes a tea-blocking device, which includes a tea-blocking plate (51) fixed on the machine frame (10) on the side of the roller (20), a tea-blocking collection groove (52) is provided below the tea-blocking plate (51), and slide rails (53) fixed to the machine frame (10) are provided at both ends of the bottom of the tea-blocking collection groove (52).

7. The drum-type tea leaf grading machine according to claim 6, characterized in that: The number of tea-collecting troughs (52) is multiple, and they correspond to sieves (21) with different sieve hole diameters.

8. The drum-type tea leaf grading machine according to claim 6, characterized in that: A tea conveyor is provided on one side of the feed hopper (11).

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