High -efficient tea airing device

Abstract

The utility model discloses a kind of efficient tea airing device, the utility model relates to tea processing technical field, scheme includes: a kind of efficient tea airing device, including: rack;Outer layer cylinder, outer layer cylinder is rotatably installed on rack, outer layer cylinder is arranged with preset angle inclination;Middle layer cylinder, middle layer cylinder is coaxially arranged in outer layer cylinder, first cavity is formed between middle layer cylinder and outer layer cylinder, the clearance width of first cavity is adapted tea leaf preset thickness spread;End cap, end cap is detachably installed in low position end portion of outer layer cylinder along the direction of inclination, end cap can block material in first cavity;Driving assembly, driving assembly is installed on rack, and driving assembly can drive outer layer cylinder rotation;Can effectively improve the accumulation phenomenon of tea in airing process, and then improve the uniformity of tea airing.

Description

Technical Field

[0001] This utility model relates to the field of tea processing technology, specifically to an efficient tea drying device. Background Technology

[0002] Sun-drying tea leaves is a crucial step in the initial processing of tea, bridging the pre-treatment and post-storage stages. Fresh leaves contain a large amount of moisture and have active enzymes; without proper control, they are prone to mold, rancidity, or flavor degradation. Sun-drying helps to balance their physiological state. Tea sun-drying serves a dual purpose: physical dehydration and quality shaping. It reduces moisture to a safe threshold to support long-term storage and transportation, while also promoting the transformation of aroma compounds, stabilizing core components, and solidifying the tea's appearance, thus defining its flavor and overall character.

[0003] According to the authorization announcement number (CN222504883U), a rotary drum tea drying device includes a rotary drum drying machine. The rotary drum drying mechanism includes a drum, and both sides of the drum are rotatably connected to the tops of two columns via rotating shafts. In practical applications, the tea leaves to be dried are first filled into the inner cavity of the drum according to the requirements of even spreading. Then, the movable drum cover is closed to ensure that the tea leaves do not spill during rotation. After the tea leaves have been naturally dried for a preset time, the motor drives the drum to rotate, and the resulting centrifugal force drives the tea leaves inside to tumble.

[0004] The structure disclosed in this patent has defects in practical applications, specifically as follows: the inner wall of the drum adopts a continuous arc surface design. When tea leaves are filled into the drum, due to the combined effects of gravity and the arc surface shape, the tea leaves tend to accumulate locally at the bottom of the drum, making it impossible to achieve uniform spreading. The accumulated tea leaves squeeze each other, hindering air circulation, exacerbating the difference in light and air contact, and ultimately causing uneven drying and deterioration of the tea quality. Utility Model Content

[0005] The purpose of this utility model is to provide an efficient tea drying device, which addresses the problem that existing drum-type tea drying devices easily cause localized accumulation of tea leaves, leading to deterioration in flavor and quality. This device effectively improves the accumulation of tea leaves during the drying process, thereby enhancing the uniformity of tea drying.

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

[0007] An efficient tea drying device includes: a frame; an outer roller rotatably mounted on the frame and arranged at a preset angle; a middle roller coaxially disposed inside the outer roller, forming a first cavity between the middle roller and the outer roller, the gap width of the first cavity being adapted to the preset thickness of the tea leaves; an end cap detachably mounted on the lower end of the outer roller along the inclined direction, the end cap being able to block the material in the first cavity; and a drive assembly mounted on the frame, the drive assembly being able to drive the outer roller to rotate.

[0008] Furthermore, in this utility model, a plurality of first connecting shafts are installed on the outer side wall of the middle roller along the circumferential direction, and the end of the first connecting shaft away from the middle roller is connected to the outer roller.

[0009] Furthermore, in this utility model, multiple inner rollers are coaxially installed inside the aforementioned middle roller, and the multiple inner rollers are arranged sequentially from the outside to the inside along the diameter direction of the middle roller; a second cavity is formed between two adjacent inner rollers, and the gap width of the second cavity is adapted to the preset thickness of the tea leaves.

[0010] Furthermore, in this invention, a plurality of second connecting shafts are installed between the two adjacent inner rollers, and the plurality of second connecting shafts are arranged along the circumferential direction; one end of the second connecting shaft is connected to one of the inner rollers, and the other end of the second connecting shaft is connected to the other inner roller.

[0011] Furthermore, in this utility model, a plurality of first partitions are installed in the first cavity, and the first partitions enclose to form a first air cavity; one end of the first partition is connected to the inner wall of the outer roller, and the other end of the first partition is connected to the outer wall of the middle roller; wherein, the first partition can prevent tea leaves from entering the first air cavity, forming an airflow channel in the first air cavity, thereby allowing air to enter the second cavity.

[0012] Furthermore, in this invention, a plurality of second partitions are installed in the aforementioned second cavity, and the second partitions enclose to form a second air chamber; one end of the second partition is connected to the inner wall of an adjacent inner roller, and the other end of the second partition is connected to the outer wall of another inner roller; in two adjacent second cavities, the plurality of second air chambers in one second cavity are distributed in a one-to-one correspondence with the plurality of second air chambers in the other second cavity, and the two correspondingly distributed second air chambers are connected; wherein, the second partition can prevent tea leaves from entering the second air chamber, forming an airflow channel in the second air chamber, thereby allowing air to enter each second cavity.

[0013] Furthermore, in this utility model, the aforementioned drive assembly includes: a drive motor mounted on a frame; a gear ring fitted onto the outer side wall of the outer roller; and a gear connected to the output end of the drive motor, the gear meshing with the gear ring.

[0014] Furthermore, in this utility model, rolling components are respectively provided on both sides of the outer roller. The rolling components include: a support roller ring, which is fitted onto the outer side wall of the outer roller; two brackets, which are respectively installed on both sides of the frame; and two support rollers, which are distributed one-to-one with the two brackets. The support rollers are rotatably connected to the corresponding brackets, and the two support rollers and the support roller ring cooperate in supporting rolling.

[0015] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0016] 1. This utility model uses a layered cavity structure formed by the nesting of an outer roller, a middle roller, and multiple sets of inner rollers. Combined with a drive component to drive the rotation, it realizes the dynamic spreading of tea leaves. This effectively overcomes the technical limitations of traditional single-roller drying equipment, where tea leaves are easily compressed by gravity and form local accumulations, resulting in significant differences in drying rates. It adapts to the preset thickness spreading requirements of tea leaves with different moisture contents and leaf shapes, and avoids the problem of deterioration in drying quality caused by uneven density of tea leaves in the cavity.

[0017] 2. This utility model, through the coaxial connection design of the first partition surrounding the first air cavity and the second partition surrounding the second air cavity, combined with the airflow diffusion structure of the ventilation holes on the side wall of the partition, effectively breaks through the limitation of traditional drying devices where the airflow only acts on the surface tea leaves and the inner tea leaves are not adequately ventilated. It ensures that the tea leaves in each cavity can fully contact the airflow, accelerate the evaporation of moisture and the discharge of water vapor, and meet the production needs of efficient dehydration in tea processing scenarios. Attached Figure Description

[0018] 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:

[0019] Figure 1 A schematic diagram of a high-efficiency tea drying device;

[0020] Figure 2 This is a schematic diagram of the interior of the outer roller;

[0021] Figure 3 This is a schematic diagram of the first partition;

[0022] Figure 4 This is a schematic diagram of the second partition.

[0023] The attached diagram shows the markings and corresponding component names:

[0024] 1-Frame, 2-Outer roller, 3-End cover, 4-Bracket, 5-Support roller, 6-Support ring, 7-Drive motor, 8-Gear, 9-Gear ring, 10-Infeed port, 11-Outfeed port, 12-Middle roller, 13-Inner roller, 14-First connecting shaft, 15-Second connecting shaft, 16-First cavity, 17-Second cavity, 18-First partition, 19-Second partition, 20-First air chamber, 22-Second air chamber. Detailed Implementation

[0025] 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.

[0026] Example

[0027] Please refer to Figures 1 to 4 This utility model provides an efficient tea drying device. It includes a frame 1, an outer roller 2, a middle roller 12, an end cap 3, and a drive assembly. The outer roller 2 is mounted on the frame 1 via a rotating structure. The outer roller 2 is inclined at a preset angle, with its higher end serving as the feed port 10 and its lower end as the discharge port 11. The middle roller 12 is coaxially arranged inside the outer roller 2, and a first cavity 16 is formed between the outer wall of the middle roller 12 and the inner wall of the outer roller 2. The gap width of the first cavity 16 is adapted to the requirement of spreading the tea leaves to a preset thickness. The end cap 3 is detachably mounted on the lower end of the outer roller 2 to block and limit the tea leaves within the first cavity 16. The drive assembly is mounted on the frame 1, and its power output end is connected to the outer roller 2, enabling it to drive the outer roller 2 to rotate around its own axis.

[0028] In the actual drying process, the operator puts the tea leaves to be dried into the first cavity 16 through the feed port 10 of the outer roller 2. As the amount of tea leaves put in increases, the drive assembly is activated to drive the outer roller 2 to rotate. The rotation of the outer roller 2 drives the tea leaves in the first cavity 16 to be conveyed to the discharge port 11 in an inclined direction, so that the tea leaves are evenly distributed in the first cavity 16. Moreover, under the blocking effect of the end cap 3, the tea leaves are restricted in the first cavity 16 and are spread out in a state that matches the gap width to accept drying.

[0029] Due to the weight of the tea leaves themselves, the tea leaves in the lower part of the first cavity 16 are easily compressed and thickened by the tea leaves above, while the tea leaves in the upper part are in a loose state. This leads to increased ventilation resistance and a reduced drying rate in the denser area, resulting in uneven drying of the tea leaves. To address this issue, the operator can use a timed control drive component to drive the outer roller 2 to rotate. When the outer roller 2 rotates, it causes the tea leaves in the first cavity 16 to rotate synchronously, so that the loose tea leaves in the upper part and the dense tea leaves in the lower part can be swapped, thereby ensuring the uniformity of the overall drying of the tea leaves.

[0030] To ensure the tea leaves are turned over when the outer roller 2 is rotated, a baffle is provided on the inner wall of the outer roller 2. The baffle can move synchronously with the outer roller 2 to push the tea leaves in the first cavity 16, thereby forcibly turning the tea leaves over and ensuring that the tea leaves in different areas can be fully exchanged.

[0031] It should be noted that, based on the characteristics of different teas (such as leaf thickness and initial moisture content), corresponding flipping rules are preset in the control system. The control system will automatically match the corresponding flipping rules and send control signals to the control components according to the type of tea being processed. At the same time, operators can manually control the drive components based on actual drying experience, balancing the convenience of automatic control with the flexibility of manual adjustment.

[0032] The preset thickness of the tea leaves spread in the first cavity 16 can be determined according to the following scheme: the daily drying should be based on the characteristics of the tea leaves. The thickness should be 3 to 5 cm for tender tea leaves (such as green tea and white tea), 5 to 8 cm for coarse tea leaves (such as black tea and oolong tea), and 4 to 6 cm for tightly rolled tea leaves (such as pearl tea).

[0033] It should be noted that, in order to create effective airflow circulation within the first cavity 16 and accelerate the removal of moisture from the tea leaves, both the outer roller 2 and the middle roller 12 have ventilation holes in their corresponding tea-drying sections. This forms an airflow channel that runs through the first cavity 16, ensuring that outside air can smoothly enter the first cavity 16 and fully contact the tea leaves, while also promptly expelling the moisture evaporated during the tea-drying process. This provides a continuous and stable ventilation environment for the tea drying process, ensuring drying efficiency and uniformity.

[0034] Please refer to Figure 2In some embodiments of this application, a plurality of first connecting shafts 14 are fixedly mounted on the outer side wall of the middle roller 12 along the circumferential direction, and the free end of each first connecting shaft 14 is fixedly connected to the inner wall of the outer roller 2. The axial ends of the middle roller 12 and the outer roller 2 are kept flush to ensure that the gap width of the first cavity 16 is uniform along the circumferential direction; at the same time, the first connecting shafts 14 adopt a distributed arrangement structure, and the space occupied will not interfere with the conveying trajectory of the tea leaves in the first cavity 16, ensuring that the tea leaves can move smoothly along the tilt direction of the roller.

[0035] Please refer to Figure 2 In some embodiments of this application, a plurality of inner rollers 13 (with multiple ventilation holes on their outer walls) are coaxially assembled inside the middle roller 12, and the inner rollers 13 are arranged in a nested manner from the outside to the inside along the radial direction of the middle roller 12. A second cavity 17 is formed between the middle roller 12 and the outermost inner roller 13, and between two adjacent inner rollers 13, and the gap width of each second cavity 17 matches the preset thickness requirement for tea leaf spreading.

[0036] The axial ends of multiple inner rollers 13 are flush with the axial ends of the middle roller 12, allowing operators to place tea leaves in each of the second chambers 17 at intervals, effectively preventing the tea leaves from being piled up tightly. This structural design can increase the amount of tea leaves processed at one time, and also allows airflow to penetrate layer by layer through the gaps in the outer structure to each of the inner second chambers 17, ensuring full contact with the tea leaves in the chamber and guaranteeing a full-area ventilation effect.

[0037] Among them, multiple second couplings 15 are assembled between two adjacent inner rollers 13. Each second coupling 15 is evenly distributed along the circumference of the inner roller 13. One end of the second coupling 15 is connected to the cylinder wall of one of the inner rollers 13, and the other end is connected to the cylinder wall of the adjacent inner roller 13. At the same time, the outermost inner roller 13 and the middle roller 12 are also rigidly connected by second couplings 15 of the same specification.

[0038] Please refer to Figure 3 In some embodiments of this application, a plurality of first partitions 18 are assembled inside the first cavity 16. One end of each first partition 18 is connected to the inner wall of the outer roller 2, and the other end is connected to the outer wall of the middle roller 12. The first partitions 18 enclose a first air cavity 20. The first partitions 18 adopt a hollow structure design, and the side walls of the first partitions 18 are provided with a plurality of ventilation holes. On the one hand, this can physically block the tea leaves in the first cavity 16, preventing the tea leaves from entering the first air cavity 20, ensuring that the first air cavity 20 always maintains an unobstructed airflow channel, and avoiding the problem of blockage caused by the tea leaves filling the first cavity 16, thus preventing air from entering the second cavity 17.

[0039] On the other hand, when air flows through the first partition 18, it can diffuse throughout the first cavity 16 through the ventilation holes on the side wall of the first partition 18, ensuring that the airflow makes full contact with the tea leaves in the first cavity 16. At the same time, each first partition 18 is only partially arranged along the circumference of the first cavity 16, and will not interfere with the transport trajectory of the tea leaves in the first cavity 16.

[0040] Please refer to Figure 4 In some embodiments of this application, each second cavity 17 is equipped with a plurality of second partitions 19. One end of the second partition 19 is fixedly connected to the inner wall of an adjacent inner roller 13, and the other end is fixedly connected to the outer wall of another inner roller 13. The second partitions 19 enclose and form a second air cavity 22. The second partitions 19, through their structural design, physically block the tea leaves in the second cavity 17, effectively preventing the tea leaves from entering the interior of the second air cavity 22, ensuring that the second air cavity 22 always maintains a smooth airflow channel, and providing structural protection for the smooth entry of air into each second cavity 17.

[0041] Between two adjacent second cavities 17, multiple second air cavities 22 in one second cavity 17 are coaxially and correspondingly distributed with multiple second air cavities 22 in the other second cavity 17, and the two corresponding second air cavities 22 are connected. At the same time, multiple second partitions 19 in the outermost second cavity 17 are also coaxially and correspondingly distributed with multiple first partitions 18 in the first cavity 16, forming a connected structure. In the multiple second cavities 17 arranged radially, each second partition 19 also maintains a coaxial and corresponding distribution. According to the multi-level connected structure, outside air can first flow through the first air cavity 20 enclosed by the first partition 18, and then pass through the second air cavities 22 enclosed by each second partition 19 in the circumferential direction from the outside to the inside, ultimately achieving uniform penetration and coverage of air throughout the entire area and at all positions of each cavity.

[0042] The second partition 19 has multiple ventilation holes on its side wall, which are connected to the interior of the corresponding second air chamber 22. When air flows into the second air chamber 22 enclosed by the second partition 19 along the connecting structure, it can diffuse throughout the second cavity 17 corresponding to the second partition 19 through the ventilation holes on the side wall. This ensures that the airflow can make full and uniform contact with the tea leaves spread in the second cavity 17, thereby ensuring that the ventilation and drying effect of each second cavity 17 meets the design requirements.

[0043] In some embodiments of this application, the inner wall of the end cap 3 is machined with internal threads, and the outer wall of the lower end of the outer roller 2 along the inclined direction is machined with external threads, thereby achieving a detachable connection; after the tea drying operation is completed, the operator can unscrew the end cap 3 so that the tea in the first cavity 16 and the second cavity 17 can be smoothly discharged when conveyed along the inclined direction.

[0044] Meanwhile, the end cap 3 and the outer roller 2 can also adopt a rotating connection structure, and the end cap 3 and the outer roller 2 are equipped with a snap-fit ​​positioning structure; when the end cap 3 rotates to the closed position, the snap-fit ​​positioning structure completes the locking and positioning, which can effectively limit the tea leaves and prevent the tea leaves from being accidentally discharged during the drying process.

[0045] In some embodiments of this application, the drive assembly consists of a drive motor 7, a gear ring 9, and a gear 8. The drive motor 7 is installed at a preset position on the frame 1, the gear ring 9 is coaxially fixed to the outer side wall of the outer roller 2, and the gear 8 is connected to the output shaft of the drive motor 7. The gear 8 and the gear ring 9 maintain a meshing transmission cooperation.

[0046] When the drive motor 7 starts, the output shaft drives the gear 8 to rotate, and the gear 8 transmits power to the gear ring 9. The gear ring 9 drives the outer roller 2 to rotate synchronously. Through the rotation of the outer roller 2, the middle roller 12, the inner roller 13 and the tea leaves in each cavity can be moved synchronously, thereby realizing the uniform tumbling of the tea leaves in the first cavity 16 and the second cavity 17, as well as the conveying of the tea leaves along the inclined direction.

[0047] Please refer to Figure 1 In some embodiments of this application, rolling assemblies are respectively arranged on both sides of the outer roller 2. Each rolling assembly consists of a support roller ring 6, two brackets 4, and two support rollers 5. The support roller ring 6 is coaxially positioned and installed on the outer side wall of the outer roller 2. The two brackets 4 are respectively fixedly installed at corresponding positions on the frame 1. The two support rollers 5 are distributed in a one-to-one correspondence with the two brackets 4. Each support roller 5 is rotatably connected to the corresponding bracket 4. The two support rollers 5 are symmetrically distributed on both sides of the support roller ring 6 and form a rolling support cooperation with it.

[0048] The rolling assembly and the driving assembly are respectively located in the adjacent areas at both ends of the outer roller 2. They are staggered with the ventilation holes on the side wall of the outer roller 2, and the unstructured components and ventilation holes overlap spatially.

[0049] 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 high-efficiency tea drying device, characterized in that, include: Rack (1); Outer roller (2), which is rotatably mounted on the frame (1), and the outer roller (2) is arranged at a preset angle. A middle layer roller (12) is coaxially disposed inside the outer layer roller (2). A first cavity (16) is formed between the middle layer roller (12) and the outer layer roller (2). The gap width of the first cavity (16) is adapted to the preset thickness of the tea leaves. End cap (3), which is detachably installed at the lower end of the outer roller (2) in the inclined direction, and which can block the material in the first cavity (16); A drive assembly is mounted on the frame (1) and is capable of driving the outer roller (2) to rotate.

2. The high-efficiency tea drying device according to claim 1, characterized in that, The outer wall of the middle roller (12) is provided with a plurality of first connecting shafts (14) along the circumferential direction, and the end of the first connecting shaft (14) away from the middle roller (12) is connected to the outer roller (2).

3. The high-efficiency tea drying device according to claim 1, characterized in that, Multiple inner rollers (13) are coaxially installed inside the middle roller (12), and the multiple inner rollers (13) are arranged sequentially from the outside to the inside along the diameter direction of the middle roller (12); A second cavity (17) is formed between two adjacent inner rollers (13), and the gap width of the second cavity (17) is adapted to the preset thickness of the tea leaves.

4. The high-efficiency tea drying device according to claim 3, characterized in that, A plurality of second connecting shafts (15) are installed between two adjacent inner rollers (13), and the plurality of second connecting shafts (15) are arranged in a circumferential direction; One end of the second connecting shaft (15) is connected to one of the inner rollers (13), and the other end of the second connecting shaft (15) is connected to the other inner roller (13).

5. The high-efficiency tea drying device according to claim 3 or 4, characterized in that, A plurality of first partitions (18) are installed inside the first cavity (16), and the first partitions (18) enclose to form a first air cavity (20); One end of the first partition (18) is connected to the inner wall of the outer roller (2), and the other end of the first partition (18) is connected to the outer wall of the middle roller (12); The first partition (18) can prevent tea leaves from entering the first air chamber (20) and form a channel for airflow in the first air chamber (20), so that air can enter the second cavity (17).

6. The high-efficiency tea drying device according to claim 5, characterized in that, The second cavity (17) is equipped with a plurality of second partitions (19), which enclose and form a second air cavity (22); One end of the second partition (19) is connected to the inner wall of one of the adjacent inner rollers (13), and the other end of the second partition (19) is connected to the outer wall of the other inner roller (13); In two adjacent second cavities (17), a plurality of second air cavities (22) in one second cavity (17) are distributed in a one-to-one correspondence with a plurality of second air cavities (22) in the other second cavity (17), and the two corresponding second air cavities (22) are connected. The second partition (19) can prevent tea leaves from entering the second air chamber (22) and form a channel for airflow in the second air chamber (22), so that air can enter each of the second chambers (17).

7. The high-efficiency tea drying device according to any one of claims 1 to 4, characterized in that, The driving component includes: A drive motor (7) is mounted on the frame (1); A toothed ring (9) is fitted onto the outer side wall of the outer roller (2); Gear (8), which is connected to the output end of the drive motor (7), and meshes with the gear ring (9).

8. The high-efficiency tea drying device according to any one of claims 1 to 4, characterized in that, Rolling assemblies are respectively provided on both sides of the outer roller (2), and the rolling assemblies include: A support roller (6) is fitted onto the outer side wall of the outer roller (2); Two brackets (4) are respectively installed on both sides of the frame (1); Two support rollers (5) are distributed one-to-one with two brackets (4). The support rollers (5) are rotatably connected to the corresponding brackets (4). The two support rollers (5) and the support rings (6) support and roll in cooperation.

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