A tea leaf sieving device

Abstract

The utility model discloses a kind of tea leaf screening devices, the utility model relates to tea production technical field, scheme includes: a kind of tea leaf screening device, including: rack, and the accommodating cavity is opened in rack;Primary sieve cylinder, primary sieve cylinder is set in accommodating cavity;Multiple buffer components, multiple buffer components are respectively installed between rack and primary sieve cylinder;At least one vibration motor, vibration motor is installed on primary sieve cylinder;Secondary sieve cylinder, one end of secondary sieve cylinder is rotatably connected with primary sieve cylinder, another end of secondary sieve cylinder can be locked with primary sieve cylinder cooperation;It can optimize screening net layout structure to break through space sheltering limit, guarantee screening operation continuous stability, improve equipment operating efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tea production technology, specifically to a tea sieving device. Background Technology

[0002] Throughout the entire process of tea planting, harvesting, and processing, tea is easily contaminated with two types of impurities: large and small, due to natural environmental factors (such as dead branches blown in by the wind and surface dust) and oversights in production operations (such as miscellaneous leaves mixed in during harvesting and debris left over from processing equipment). Large impurities mainly consist of non-target tea residues such as tea branches, stems, and broad leaves; these impurities are significantly larger than normal tea leaves. Small impurities are primarily composed of dust, tea dust, fine hairs, and tiny foreign objects (such as small plastic fragments and plant fibers); these are much smaller than normal tea leaves and easily adhere to the surface of the tea leaves or are mixed in with the tea pile. Efficiently removing these two types of impurities from tea leaves is a crucial step in ensuring tea quality and meeting market demands.

[0003] A tea sieving machine with grading function, disclosed in authorization announcement number (CN221246030U), includes a sieving barrel with an opening at the top and multiple spring-loaded support legs fixedly connected to the bottom. Sieving groups are located at the bottom of the sieving barrel. In actual tea processing scenarios, the tea leaves to be sieved are poured into the sieving barrel through the opening at the top. After the equipment is started, a vibrating motor drives the sieving barrel to vibrate. This vibration causes the multiple screening screens within the sieving barrel to perform multi-stage sieving of the tea leaves, thereby achieving the grading and screening effect.

[0004] The structure disclosed in this patent has defects in practical applications, specifically as follows: multiple screening screens are integrated into the screening barrel in a top-down stacked layout. The middle layer of screening screens is prone to clogging due to tea leaf agglomeration and impurity blockage. The spatial structure of the above screening screens is restricted by the other screening screens and the screening barrel wall, making it impossible for operators to directly clean and repair the clogged screening screens. It is necessary to disassemble part of the screening barrel shell or remove the upper screening screens to access the faulty parts, ultimately reducing the equipment's operating efficiency and the continuity of operations. Utility Model Content

[0005] The purpose of this utility model is to provide a tea sieving device that addresses the problem in the existing technology where multiple layers of screens are integrated into a closed cavity in a stacked layout. When the middle layer of screens becomes clogged, it is blocked by the upper and lower screens and the cavity structure, resulting in a decrease in equipment operating efficiency and continuity. The device proposes a solution that optimizes the layout structure of the screens to break through spatial obstruction limitations, ensures continuous and stable sieving operations, and improves equipment operating efficiency.

[0006] This utility model is achieved through the following technical solution:

[0007] A tea sieving device includes: a frame with a receiving cavity; a primary sieve cylinder disposed within the receiving cavity; multiple buffer components installed between the frame and the primary sieve cylinder; at least one vibrating motor mounted on the primary sieve cylinder; and a secondary sieve cylinder, one end of which is rotatably connected to the primary sieve cylinder, and the other end of which is lockably engaged with the primary sieve cylinder. During the sieving process, the secondary sieve cylinder is locked to the primary sieve cylinder, and the secondary sieve cylinder covers the top opening of the primary sieve cylinder. During maintenance, the secondary sieve cylinder is unlocked from the primary sieve cylinder, and the secondary sieve cylinder can rotate to avoid the top opening of the primary sieve cylinder.

[0008] Furthermore, in this utility model, a pivot is installed on the outer wall of the primary sieve cylinder, and a pivot sleeve is rotatably installed at the end of the pivot away from the primary sieve cylinder, the pivot sleeve being connected to the secondary sieve cylinder.

[0009] Furthermore, in this utility model, a locking sleeve is installed on the outer wall of the primary screen cylinder; a connecting support plate is installed on the outer wall of the secondary screen cylinder, a sliding lock seat is slidably installed on the connecting support plate, and a screening lock hole and a maintenance lock hole are opened on the connecting support plate; a positioning pin is installed on the sliding lock seat, an assembly groove is opened on the sliding lock seat, and a locking component is installed in the assembly groove; wherein, in the screening position, the locking component locks with the screening lock hole, and the positioning pin can be embedded in the locking sleeve; in the maintenance position, the locking component locks with the maintenance lock hole, and the positioning pin is completely disengaged from the locking sleeve.

[0010] Furthermore, in this utility model, the locking component includes: a locking pin, which passes through the assembly channel; and a return spring, which is fitted on the outside of the locking pin, with one end of the return spring connected to the outer wall of the locking pin and the other end of the return spring connected to the inner wall of the assembly channel; wherein, in its natural state, the return spring enables the locking pin to be embedded in the screening lock hole or maintenance lock hole.

[0011] Furthermore, in this utility model, the outer wall of the secondary screen cylinder has a flip support, which is connected to a pivot sleeve; wherein, the secondary screen cylinder can be flipped by the flip support, thereby selectively switching the bearing plane of the secondary screen cylinder to an upward or downward orientation.

[0012] Furthermore, in this utility model, the above-mentioned buffer assembly includes: a spring support, which is installed on the outer side wall of the primary screen cylinder; and a buffer spring, one end of which is connected to the spring support and the other end of which is connected to the frame, and the buffer spring provides elastic support to the primary screen cylinder.

[0013] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0014] 1. This utility model achieves the switching function between the screening station and the maintenance station through the pivotal connection and locking mechanism between the secondary screen cylinder and the primary screen cylinder, ensuring that there is no structural obstruction at the top of the primary screen cylinder during maintenance operations. This design effectively avoids the defect of traditional stacked screen equipment where the middle layer screen is obstructed by the upper and lower structures, requiring disassembly of the shell for cleaning and maintenance. This allows operators to quickly complete the removal of finished products from the screen cylinder and the maintenance of internal components, significantly shortening maintenance downtime and ensuring the continuity of tea screening operations.

[0015] 2. This utility model achieves automatic positioning of the secondary screen cylinder and the primary screen cylinder in a locked state by using the pre-tightening drive of the locking pin by the return spring in the locking assembly. This not only ensures the sealing of the primary screen cylinder during the screening process (preventing tea leaves from spilling), but also simplifies the station switching operation process by guiding the sliding lock seat, reducing the difficulty of operation for operators and improving the ease of use and operational reliability of the equipment. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 A schematic diagram of a tea sieving device;

[0018] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 A schematic diagram showing the connection between the support plate and the sliding lock seat;

[0020] Figure 4 This is a schematic diagram showing the connection between the flip support and the pivot sleeve.

[0021] The attached diagram shows the markings and corresponding component names:

[0022] 1-Frame, 2-Accommodation cavity, 3-Primary screen cylinder, 4-Secondary screen cylinder, 5-Buffer spring, 6-Spring lug, 7-Positioning column, 8-Vibration motor, 9-Connecting support plate, 10-Sliding lock seat, 11-Positioning pin, 12-Locking sleeve, 13-Pivot, 14-Pivot slot, 15-Pivot sleeve, 16-Maintenance lock hole, 17-Screening lock hole, 18-Assembly channel, 19-Reset spring, 20-Locking pin, 21-Second rotating body, 22-First rotating body. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0024] Example

[0025] Please refer to Figures 1 to 4 This utility model provides a tea sieving device. It includes a frame 1, a primary sieve cylinder 3, multiple buffer components, at least one vibrating motor 8, and a secondary sieve cylinder 4. The frame 1 serves as the overall support structure of the device, with a receiving cavity 2 in the middle. The primary sieve cylinder 3 is suspended within the receiving cavity 2. Multiple buffer components are spaced apart along the circumference of the primary sieve cylinder 3 between the frame 1 and the primary sieve cylinder 3, providing elastic support and a structural basis for vibration transmission during the sieving process. The vibrating motor 8 is installed on the outer wall of the primary sieve cylinder 3, serving as the vibration excitation source for the primary sieve cylinder 3. One end of the secondary sieve cylinder 4 is rotatably connected to the primary sieve cylinder 3, and the other end is lockably engaged with the primary sieve cylinder 3.

[0026] The screening process is as follows: When in the screening position, the secondary screen cylinder 4 is rotated to be directly above the primary screen cylinder 3, so that the secondary screen cylinder 4 and the primary screen cylinder 3 are locked together and completely cover the top opening of the primary screen cylinder 3; after the tea leaves to be screened are put into the secondary screen cylinder 4, the vibration motor 8 is started, and the vibration motor 8 drives the primary screen cylinder 3 and the secondary screen cylinder 4 to vibrate synchronously; the tea leaves to be screened are initially classified by vibration in the secondary screen cylinder 4, and large-diameter impurities are intercepted by the secondary screen holes of the secondary screen cylinder 4, while small-diameter impurities and tea leaves fall into the primary screen cylinder 3 through the secondary screen holes; the tea leaves entering the primary screen cylinder 3 are further classified by vibration, and small-diameter impurities are discharged through the primary screen holes of the primary screen cylinder 3, while the pure tea leaves that meet the requirements are retained in the primary screen cylinder 3.

[0027] When in the maintenance position, release the locking fit between the secondary sieve cylinder 4 and the primary sieve cylinder 3, and rotate the secondary sieve cylinder 4 to a position that avoids the top opening of the primary sieve cylinder 3. At this time, the pure tea leaves in the primary sieve cylinder 3 can be directly taken out, and if there is a fault inside the primary sieve cylinder 3, maintenance operations can be carried out without structural interference.

[0028] It should be noted that both the primary sieve cylinder 3 and the secondary sieve cylinder 4 adopt a cylindrical structure design. When in the sieving position, the secondary sieve cylinder 4 can rotate to be directly above the primary sieve cylinder 3. At this time, the bottom end face of the secondary sieve cylinder 4 fits snugly against the top edge of the primary sieve cylinder 3. This fitting structure provides support and positioning for the secondary sieve cylinder 4 and also seals the top opening of the primary sieve cylinder 3, thereby preventing tea leaves from spilling during the vibrating sieving process.

[0029] In some embodiments of this application, a pivot 13 is fixedly provided on the outer wall of the primary sieve cylinder 3, and a pivot groove 14 is constructed at the end of the pivot 13 away from the primary sieve cylinder 3; a pivot sleeve 15 is rotatably fitted into the pivot groove 14, and the pivot sleeve 15 is fixedly connected to the outer wall of the secondary sieve cylinder 4. Thus, the pivot sleeve 15 can rotate freely around the pivot 13, thereby driving the secondary sieve cylinder 4 to rotate synchronously.

[0030] Please refer to Figures 1 to 3 In some embodiments of this application, a locking sleeve 12 is fixedly provided on the outer side wall of the primary screen cylinder 3; a connecting support plate 9 is fixedly installed on the outer side wall of the secondary screen cylinder 4, and a sliding lock seat 10 is slidably arranged on the connecting support plate 9. A screening lock hole 17 and a maintenance lock hole 16 are correspondingly opened on the connecting support plate 9; a positioning pin 11 is fixedly installed on the sliding lock seat 10, and an assembly groove 18 is opened on the sliding lock seat 10. A locking component is assembled in the assembly groove 18.

[0031] When switching to the screening station, rotate the secondary screen cylinder 4 to be directly above the primary screen cylinder 3, so that the positioning pin 11 and the locking sleeve 12 are coaxially aligned; drive the sliding lock seat 10 to slide down along the connecting support plate 9, and simultaneously drive the locking component and the positioning pin 11 to move down. When the locking component and the screening lock hole 17 form a locking engagement, the positioning pin 11 is just embedded in the locking sleeve 12, realizing the rigid locking of the primary screen cylinder 3 and the secondary screen cylinder 4.

[0032] When switching to the maintenance station or when material needs to be removed, the sliding lock seat 10 is driven to slide upward along the connecting support plate 9, and the locking component and the positioning pin 11 are moved in the same direction simultaneously. When the positioning pin 11 is completely disengaged from the locking sleeve 12, the locking component is locked in place with the maintenance lock hole 16, thereby limiting and fixing the sliding lock seat 10 and the positioning pin 11.

[0033] Please refer to Figure 3 It should be noted that sliding guide grooves are respectively provided on the opposite sides of the connecting support plate 9 along the height direction, and guide sliders are respectively fixed on the corresponding positions on both sides of the sliding lock seat 10; the two guide sliders are fitted into the sliding guide grooves one-to-one, forming a guiding sliding fit along the extension direction of the sliding guide grooves to ensure the lifting and lowering action of the sliding lock seat 10. Among them, the screening lock hole 17 and the maintenance lock hole 16 are opened between the two sliding guide grooves, which can effectively avoid the interference problem between the sliding lock seat 10 and the lock hole structure during the sliding process.

[0034] Please refer to Figure 3Specifically, the locking assembly includes a locking pin 20 and a return spring 19. The locking pin 20 passes through the assembly channel 18, and the return spring 19 is sleeved on the outside of the locking pin 20. One end of the return spring 19 is connected to the outer wall of the locking pin 20, and the other end is connected to the inner wall of the assembly channel 18. In its natural state, the preload of the return spring 19 can drive the locking pin 20 to engage with the screening lock hole 17 or the maintenance lock hole 16, thereby achieving the locking and positioning of the positioning pin 11.

[0035] In its natural state without external force, the elastic potential energy of the return spring 19 can drive the locking pin 20 to engage with the screening lock hole 17 or the maintenance lock hole 16, thereby achieving rigid locking of the positioning pin 11. During workstation adjustment, the operator applies a pulling force to the locking pin 20 to disengage it from the current lock hole. After the sliding lock seat 10 moves the locking pin 20 to the lock hole position of the corresponding workstation, the external force applied to the locking pin 20 is released. Under the elastic recovery action of the return spring 19, the locking pin 20 automatically engages with the target lock hole, ultimately completing the locking and positioning.

[0036] Please refer to Figure 4 In some embodiments of this application, a flipping support is fixedly provided on the outer wall of the secondary screen cylinder 4, and the flipping support is fixedly connected to the pivot sleeve 15; with the flipping function of the flipping support, the bearing plane of the secondary screen cylinder 4 can be selectively switched to an upward or downward orientation. After the secondary screen cylinder 4 is released from the locking constraint of the primary screen cylinder 3, the operator can first rotate the secondary screen cylinder 4 horizontally to a position that avoids the top opening of the primary screen cylinder 3, and then drive the secondary screen cylinder 4 to flip vertically through the flipping support, so that the bearing plane of the secondary screen cylinder 4 is switched to a downward orientation, thereby achieving efficient discharge of large impurities intercepted in the secondary screen cylinder 4.

[0037] It should be noted that the flipping support consists of a first rotating body 22 and a second rotating body 21. The first rotating body 22 has a rotating groove, and the second rotating body 21 is rotatably fitted into the rotating groove, forming a rotational fit. The first rotating body 22 is rigidly connected to the outer wall of the secondary screen cylinder 4, while the second rotating body 21 is fixedly assembled to the pivot sleeve 15. When the second rotating body 21 rotates relative to the rotating groove of the first rotating body 22, it can directly drive the secondary screen cylinder 4 to complete the rotational action synchronously. The circumferential constraint of the rotating groove on the second rotating body 21 can ensure that the second rotating body 21 disengages from the rotating groove, so that the rotational movement of the pivot sleeve 15 can be converted into the attitude adjustment action of the secondary screen cylinder 4.

[0038] Please refer to Figure 1In some embodiments of this application, the buffer assembly consists of a spring lug 6 and a buffer spring 5. The spring lug 6 is fixedly mounted on the outer wall of the primary screen cylinder 3, and one end of the buffer spring 5 is connected to the spring lug 6, while the other end is assembled and fixed to the frame 1, thereby providing elastic support for the primary screen cylinder 3. When the vibration motor 8 drives the primary screen cylinder 3 to vibrate, the vibration action of the primary screen cylinder 3 can drive the buffer spring 5 to synchronously complete the compression and reset movements, thereby deforming to achieve vibration buffering.

[0039] It should be noted that the top and bottom ends of the compression spring are respectively provided with positioning posts 7, wherein the top positioning post 7 is fixed to the spring lug 6, and the bottom positioning post 7 is fixed to the frame 1, thereby forming axial guidance and radial limit for the extension and retraction movement of the compression spring.

[0040] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A tea sieving device, characterized in that, include: A frame (1) having a receiving cavity (2) provided thereon; A primary sieve cylinder (3) is disposed within the accommodating cavity (2); Multiple buffer components are respectively installed between the frame (1) and the primary sieve cylinder (3); At least one vibrating motor (8) is mounted on the primary screen cylinder (3); Secondary sieve cylinder (4), one end of which is rotatably connected to the primary sieve cylinder (3), and the other end of which can be locked into the primary sieve cylinder (3); In the screening station, the secondary screen cylinder (4) is locked to the primary screen cylinder (3), and the secondary screen cylinder (4) covers the top opening of the primary screen cylinder (3). When in the maintenance position, the secondary screen cylinder (4) is unlocked from the primary screen cylinder (3), and the secondary screen cylinder (4) can rotate to avoid the top opening of the primary screen cylinder (3).

2. The tea sieving device according to claim 1, characterized in that, A pivot (13) is installed on the outer wall of the primary sieve cylinder (3). A pivot sleeve (15) is rotatably installed at the end of the pivot (13) away from the primary sieve cylinder (3). The pivot sleeve (15) is connected to the secondary sieve cylinder (4).

3. The tea sieving device according to claim 2, characterized in that, A locking sleeve (12) is installed on the outer wall of the primary sieve cylinder (3); A connecting support plate (9) is installed on the outer wall of the secondary screen cylinder (4). A sliding lock seat (10) is slidably installed on the connecting support plate (9). A screening lock hole (17) and a maintenance lock hole (16) are provided on the connecting support plate (9). The sliding lock seat (10) is equipped with a positioning pin (11), and the sliding lock seat (10) is provided with an assembly groove (18), and a locking component is installed in the assembly groove (18); In the screening station, the locking component locks with the screening lock hole (17), and the positioning pin (11) can be embedded in the locking sleeve (12). When in the maintenance station, the locking component engages with the maintenance lock hole (16), and the positioning pin (11) is completely disengaged from the locking sleeve (12).

4. The tea sieving device according to claim 3, characterized in that, The locking component includes: A locking pin (20) is inserted into the assembly channel (18); A return spring (19) is fitted on the outside of the locking pin (20). One end of the return spring (19) is connected to the outer wall of the locking pin (20), and the other end of the return spring (19) is connected to the inner wall of the assembly channel (18). In its natural state, the return spring (19) enables the locking pin (20) to be inserted into the screening lock hole (17) or the maintenance lock hole (16).

5. The tea sieving device according to claim 3, characterized in that, The outer wall of the secondary screen cylinder (4) has a flip support, which is connected to the pivot sleeve (15); The secondary screen cylinder (4) can be flipped by the flipping support, thereby selectively switching the bearing plane of the secondary screen cylinder (4) to an upward or downward orientation.

6. The tea sieving device according to any one of claims 1 to 5, characterized in that, The buffer component includes: Spring lug (6), the spring lug (6) is installed on the outer side wall of the primary screen cylinder (3); A buffer spring (5) is provided, one end of which is connected to the spring lug (6), and the other end of which is connected to the frame (1). The buffer spring (5) provides elastic support to the primary screen cylinder (3).

Images