Layered circulating drying device for drying bergamot

Abstract

The application discloses a layered circulating drying device for drying bergamot, which comprises a shell, an airflow channel and one or more than one bearing device. The shell is internally provided with a drying cavity. An air inlet is connected with a hot gas source, and an air outlet is used for discharging humid hot gas. The drying cavity is internally provided with up-and-down and left-and-right staggered baffles to form a labyrinth-shaped airflow channel. Each bearing device is installed in the drying cavity through an elastic connecting mechanism and can rotate and ascend with the weight reduction of the bergamot slices in the drying process to continuously change the entering angle of the hot airflow relative to the bergamot slices. Meanwhile, the bearing disc is in contact with the high-low staggered limiting rods in the ascending process and is positively and reversely tilted to automatically tumble and turn over the bergamot slices. The device can realize multi-angle and bidirectional tumble drying without setting a complex turning-over mechanism, which is beneficial to reducing the drying dead angle, improving the heating uniformity and drying efficiency.

Description

Technical Field

[0001] This invention relates to the field of Buddha's Hand processing, and more specifically to a layered circulating drying device for drying Buddha's Hand. Background Technology

[0002] Buddha's Hand, an agricultural product with medicinal, edible, and health-promoting value, typically requires initial slicing during processing, followed by hot air drying to reduce its moisture content for subsequent storage, transportation, and further processing. Especially with sliced ​​Buddha's Hand slices, due to their varying thickness, irregular shape, and numerous surface wrinkles, insufficient drying or uneven heating can easily lead to localized residual moisture, surface dryness without internal drying, and severe curling and deformation, thus affecting the finished product's quality, color, aroma, and retention of active ingredients. Therefore, improving the uniformity of heating and overall drying efficiency of Buddha's Hand slices during the drying process has always been a crucial direction for the improvement of such drying equipment.

[0003] Most existing Buddha's Hand slice drying devices employ fixed tray, fixed screen, or multi-layer flat-lay structures. This involves placing the Buddha's Hand slices flat on a support tray, support mesh, or drying rack, with hot air continuously flowing in from one side, bottom, or top for drying. While this type of structure can achieve batch drying, it still has significant shortcomings in practical use. First, during drying, the bottom surface of the Buddha's Hand slices usually remains attached to the surface of the support tray or support mesh, resulting in poor ventilation on the side in contact with the support components. This makes it difficult for the hot air to fully reach the bottom area, causing the bottom surface to dry slower than the top surface, leading to uneven drying. Second, the direction of hot air input in traditional devices is mostly relatively fixed. The hot air usually flows in a single, predetermined direction, and the contact angle with the Buddha's Hand slices remains essentially unchanged. When the Buddha's Hand slices are uneven in shape, stacked in different positions, or have raised edges, areas with insufficient hot air coverage can easily form on the surface and around the slices, creating drying dead zones, affecting moisture loss efficiency, and further prolonging the overall drying time.

[0004] Furthermore, while some existing equipment attempts to improve drying uniformity by adding turning, stirring, or conveyor-turning mechanisms to change the material's posture during drying, these solutions are typically complex in structure, with numerous drive components and long transmission chains. This not only increases manufacturing costs but also makes them prone to jamming, wear, cleaning difficulties, and maintenance challenges under high temperatures and prolonged operation. For slit Buddha's Hand slices, which are relatively light, have soft edges, and whose moisture content gradually decreases during drying, external forced turning may cause damage, deformation, or incomplete turning in certain areas, making it difficult to balance structural simplification with improved drying performance. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a layered circulating drying device for drying Buddha's Hand citron. This device leverages the gradual weight reduction of Buddha's Hand citron slices during the drying process, enabling the structure supporting the slices to automatically change position and orientation with the weight variation. This allows for continuous changes in the contact angle between the hot airflow and the Buddha's Hand citron slices without relying on a complex flipping mechanism. Furthermore, it enables the Buddha's Hand citron slices to automatically flip during the drying process, thereby reducing drying dead zones and improving the uniformity of heating on the upper and lower surfaces of the slices, as well as the overall drying efficiency.

[0006] This invention is achieved through the following technical solution: a layered circulating drying device for drying Buddha's Hand fruit, comprising: The housing has an air inlet on one side of its bottom and an air outlet on one side of its top. The air inlet is connected to a heat source, and the housing has a drying chamber inside. An airflow channel is provided inside the drying chamber of the housing; One or more supporting devices, each supporting device is used to support the slit Buddha's Hand slices, and each of the supporting devices is arranged inside the drying chamber; Each support device can rotate and rise according to the weight of the Buddha's Hand slices to be dried, thereby switching the angle at which the hot air source enters relative to the Buddha's Hand slices.

[0007] As a preferred technical solution, the drying chamber is provided with one or more partitions from top to bottom, and the upper and lower partitions are staggered left and right to form a maze-like airflow channel.

[0008] As a preferred technical solution, a support plate is provided at the upper end of each partition corresponding to each of the bearing devices. The two sides of the support plate are fixedly connected to the inner wall of the shell. The bearing device is connected to the support plate through an elastic connection mechanism. The bearing devices are all installed through the partition.

[0009] As a preferred technical solution, the supporting device includes a supporting plate with a supporting cavity, the Buddha's hand slice is placed in the supporting cavity, a connecting bracket is provided on the top of the supporting plate, and a connecting sleeve is provided on the top of the connecting bracket; It also includes a drive connecting shaft. Each of the partitions is provided with a shaft hole. The drive connecting shaft passes through the shaft hole. A ball sleeve is provided at the bottom of the drive connecting shaft. A spherical connecting hole is provided at the bottom of the ball sleeve. A ball shaft is provided at the top of the connecting sleeve. The ball shaft is rotatably installed in the spherical connecting hole.

[0010] As a preferred technical solution, a return spring is provided between the ball sleeve and the connecting sleeve.

[0011] As a preferred technical solution, the inner wall of the shaft hole is provided with a guide slider, and the outer wall of the drive connecting shaft is provided with an arc-shaped guide groove along the axial direction of the drive connecting shaft, and the guide slider is snapped into the arc-shaped guide groove.

[0012] As a preferred technical solution, the elastic connection mechanism includes a connecting spring. The bottom of the connecting spring is connected to the drive connecting shaft, and the top of the connecting spring is connected to a rotating connecting shaft. The rotating connecting shaft is installed in the bearing hole of a bearing. The bearing is fixedly installed in the bearing seat at the bottom of the support plate. When the slit dried Buddha's hand is placed in the bearing tray, the connecting spring is stretched. When the dried Buddha's hand loses weight due to drying, the connecting spring continuously retracts.

[0013] As a preferred technical solution, a contact ring is provided on the outer circular surface of the bearing plate, a first limiting rod is provided on one side of each bearing plate, and a second limiting rod is provided on the other side of each bearing plate. The two ends of the first limiting rod and the second limiting rod are respectively fixedly connected to the housing.

[0014] As a preferred technical solution, the first limiting rod is located at the upper end of the second limiting rod, and the first limiting rod and the second limiting rod are offset in the height direction. The first limiting rod and the second limiting rod are both provided with inclined guide surfaces on the side facing the contact ring. When the bearing plate retracts upward, it contacts the first limiting rod and the second limiting rod in sequence, causing the bearing plate to tilt. The second limiting rod is located at the lower position. When the bearing plate moves upward, it will first contact the second limiting rod, causing the bearing plate to tilt to one side. The Buddha's hand stick inside will roll due to the tilt. After the bearing plate exceeds the height of the second limiting rod, the return spring resets the entire bearing plate. After reset, it continues to rise and will contact the first limiting rod. At this time, the entire bearing plate tilts in the opposite direction, achieving tumbling and drying in the opposite direction.

[0015] As a preferred technical solution, a sealing box is provided on the front end of the housing corresponding to the position of the carrier plate, and a handle is provided on the outside of the sealing box.

[0016] The beneficial effects of this invention are as follows: This invention fully utilizes the characteristic that the weight of the Buddha's Hand slices gradually decreases during the drying process, enabling the supporting tray to automatically rotate and rise with the weight change. During the rising process, the angle of the hot airflow relative to the Buddha's Hand slices is changed, thereby effectively reducing the drying dead angles formed by fixed air supply and improving the overall heating uniformity of the Buddha's Hand slices. At the same time, the supporting tray can tilt after contacting the limiting rod during the retraction and rising process, so that the Buddha's Hand slices can be automatically flipped over. This achieves the goal of completing the flipping and drying without setting up a complex flipping mechanism, thereby improving the drying efficiency, simplifying the device structure, and enhancing the stability and practicality of the equipment operation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a structural schematic diagram of the location of the support device of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the front structure; Figure 5 For the present invention Figure 4 A cross-sectional schematic diagram; Explanation of reference numerals in the attached figures: 1. Housing; 2. Air inlet; 3. Air outlet; 8. Drying chamber; 15. Partition; 16. Support plate; 11. Bearing plate; 14. Connecting bracket; 17. Connecting sleeve; 131. Drive connecting shaft; 133. Ball sleeve; 18. Ball shaft; 21. Return spring; 132. Arc-shaped guide groove; 6. Connecting spring; 9. Rotating connecting shaft; 7. Bearing; 25. Contact ring; 10. First limiting rod; 12. Second limiting rod; 101. Inclined guide surface; 4. Sealing box; 5. Handle. Detailed Implementation

[0019] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0020] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0021] like Figures 1-5As shown, the present invention provides a layered circulating drying device for drying Buddha's Hand citron. In specific implementation, it includes a shell 1, an airflow channel disposed inside the shell 1, and one or more supporting devices arranged within a drying chamber 8. The shell 1 serves as the main mounting base and hot air circulation space component of the entire device. Preferably, it is constructed using metal plates or composite insulation plates with certain thermal insulation properties to form a closed box structure. The interior of the shell 1 forms a drying chamber 8 for accommodating the hot airflow and Buddha's Hand citron slices. An air inlet 2 is provided on one side of the bottom of the shell 1, which is used to connect to an external hot air source. The hot air source can be a hot air blower, heating box, heat exchanger, or other heating equipment capable of continuously providing dry hot air, thereby introducing a stable high-temperature airflow into the drying chamber 8. An air outlet 3 is provided on one side of the top of the shell 1, which is used to discharge the waste gas, water vapor, and part of the circulating airflow after it has flowed into the drying chamber 8, so as to cooperate with the external circulating air duct or dehumidification structure to form a continuous drying environment. By placing the air inlet 2 on one side of the lower part of the housing 1 and the air outlet 3 on one side of the top part of the housing 1, the hot airflow can form an overall upward flow trend in the drying chamber 8, which is conducive to heat transfer and moisture discharge.

[0022] To ensure that the hot airflow does not flow in a single, straight line within the shell 1, but rather extends the flow path between layers and increases the contact time with the Buddha's Hand slices, in this embodiment, the airflow channel is located within the drying chamber 8 of the shell 1, and one or more partitions 15 are arranged from top to bottom within the drying chamber 8. Each partition 15 preferably extends laterally along the shell 1, but adjacent upper and lower partitions 15 are arranged in a staggered manner, i.e., the upper partition 15 is offset to one side, and the lower partition 15 is offset to the other side. This prevents the hot airflow from flowing directly to the outlet 3 along the shortest path after entering from the inlet 2, instead requiring it to bypass each partition 15 to form a tortuous, labyrinthine channel. This labyrinthine airflow channel design significantly increases the residence time and heat exchange path of the hot airflow within the drying chamber 8, allowing the hot airflow to repeatedly scour and flow around the supporting devices at each layer, thereby improving the utilization efficiency of the hot airflow, reducing local temperature differences, and enhancing the heating uniformity of the Buddha's Hand slices at different heights.

[0023] One or more supporting devices are installed in the drying chamber 8, each supporting device being used to support the slit Buddha's hand slices. Multiple supporting devices can be arranged in layers along the height of the shell 1, or multiple devices can be spaced apart within the same layer, increasing the single-load capacity through multi-layer, multi-point support. Unlike traditional fixed tray structures, the supporting devices in this invention are not stationary, but can automatically rotate and rise according to the weight changes of the Buddha's hand slices to be dried, thereby switching the angle of the hot air source relative to the Buddha's hand slices. That is, when the Buddha's hand slices are first placed on the supporting device, due to their high moisture content and weight, the supporting device is in a lower position; as the drying process continues, the internal moisture of the Buddha's hand slices gradually evaporates, and the overall weight gradually decreases. Under the action of elastic restoring force, the supporting device continuously retracts upwards. Simultaneously, with the assistance of the guiding mechanism, it does not simply rise in a straight line, but rotates while rising, thus constantly changing the direction of the hot airflow relative to the Buddha's hand slices. This avoids the hot air always acting on the surface of the Buddha's hand slices at a fixed angle, reducing drying dead zones and improving overall drying efficiency.

[0024] To achieve stable installation and layered support of the bearing devices, a support plate 16 is provided at the upper end of each partition 15 corresponding to the position of each bearing device. The two sides of the support plate 16 are fixedly connected to the inner wall of the shell 1. The support plate 16 serves both to install the elastic connection mechanism and to suspend and support the upper retractable structure of the bearing device. Each bearing device is connected to the corresponding support plate 16 through an elastic connection mechanism, and each bearing device is set through the partition 15, so that the bearing part is located below or adjacent to the partition 15, while the connecting and guiding parts are connected to the upper support structure through the partition 15. Through this layered arrangement, each layer of bearing devices is located in different flow areas of the labyrinthine airflow channel, so that the different layers of Buddha's Hand slices are all in the hot airflow scouring path.

[0025] In this embodiment, the supporting device includes a supporting plate 11, which serves as the component for directly holding the Buddha's Hand slices. A supporting cavity is formed on the supporting plate, and the sliced ​​Buddha's Hand slices can be laid flat or scattered within this cavity. The supporting cavity can be configured as a shallow, recessed structure, or as a receiving area with ventilation holes or vents to allow hot airflow to pass around and near the bottom of the Buddha's Hand slices. A connecting bracket 14 is provided at the top of the supporting plate 11, extending upwards and connecting to a connecting sleeve 17 at the top. The connecting sleeve 17 serves as a spherical connecting component between the supporting plate 11 and the upper drive connecting shaft 131, used to facilitate subsequent tilting and flipping movements of the supporting plate 11. It also includes a drive connecting shaft 131. Each partition 15 is provided with a shaft hole for the drive connecting shaft 131 to pass through. After the drive connecting shaft 131 passes through the corresponding shaft hole, a ball sleeve 133 is provided at its bottom. A spherical connecting hole is provided at the bottom of the ball sleeve 133. A ball shaft 18 is provided at the top of the connecting sleeve 17. The ball shaft 18 is rotatably installed in the spherical connecting hole. Through the spherical fit between the ball shaft 18 and the spherical connecting hole, the bearing plate 11 can not only follow the drive connecting shaft 131 to achieve overall lifting and rotation, but also swing and tilt at a certain angle relative to the drive connecting shaft 131 when subjected to lateral limiting interference, providing a structural basis for the subsequent automatic turning function.

[0026] To ensure the bearing plate 11 can automatically return to its normal bearing state after tilting, a return spring 21 is provided between the ball sleeve 133 and the connecting sleeve 17. The return spring 21 preferably surrounds the ball shaft 18 or is positioned at a corresponding location between the ball sleeve 133 and the connecting sleeve 17. It provides a restoring force after the bearing plate 11 tilts to one side due to contact with the limiting rod, allowing the bearing plate 11 to return to a relatively horizontal or initial bearing posture after releasing the limiting rod. In this way, the bearing plate 11 can undergo controlled tilting and automatic reset multiple times throughout the drying process without the need for additional complex mechanical flippers, swing arms, motors, or transmission mechanisms, thus greatly simplifying the overall structure while ensuring the flipping effect.

[0027] To ensure the supporting device rotates synchronously during its ascent, a guide slider is provided on the inner wall of the shaft hole, and an arc-shaped guide groove 132 is provided on the outer wall of the drive connecting shaft 131 along its axial direction. The guide slider is engaged with the arc-shaped guide groove 132. Since the guide groove does not extend linearly along the axial direction of the drive connecting shaft 131, but rather forms an arc-shaped trajectory with a circumferential offset, when the drive connecting shaft 131 moves upward axially under the retraction of the elastic connecting mechanism, the guide slider will slide relative to the trajectory of the arc-shaped guide groove 132, forcing the drive connecting shaft 131 to rotate accordingly. Thus, as the drive connecting shaft 131 rises, it drives the bottom ball sleeve 133, connecting sleeve 17, connecting bracket 14, and supporting plate 11 to rotate and rise as a whole. This rotation is not generated by additional drive, but is formed by automatic mechanical guidance conversion triggered by weight change. It has a simple structure, smooth operation, and can continue to occur as the weight of the Buddha's Hand slice gradually decreases. This causes the angle of the hot airflow relative to the Buddha's Hand slice to constantly switch and change, enhancing the coverage of the hot air on different surface areas and edge folds of the Buddha's Hand slice.

[0028] Furthermore, the elastic connection mechanism includes a connecting spring 6, with a drive connecting shaft 131 connected to its bottom and a rotating connecting shaft 9 connected to its top. The rotating connecting shaft 9 is installed in the bearing 7 hole of the bearing 7, and the bearing 7 is fixedly installed in the bearing 7 seat at the bottom of the support plate 16. Through this structure, the drive connecting shaft 131 is not rigidly fixed, but is suspended below the support plate 16 by the connecting spring 6. When the slit Buddha's hand slices are placed in the carrying tray 11, the total weight of the carrying tray 11 and the Buddha's hand slices on it will pull the connecting spring 6 downwards, causing the drive connecting shaft 131 to lower the carrying tray 11 to a lower position. As the drying process continues, the weight of the Buddha's hand slices gradually decreases due to continuous evaporation of moisture, and the tension on the connecting spring 6 gradually weakens. The connecting spring 6 then gradually retracts under its own elastic force, thereby driving the drive connecting shaft 131 to move upwards continuously. Since the drive connecting shaft 131 cooperates with the guide slider and the arc-shaped guide groove 132, this upward movement is converted into a rotational upward motion. By utilizing the natural weight change of the Buddha's Hand slices before and after drying as the trigger source, this invention can achieve automatic adjustment of the position and posture of the bearing plate 11 without the need for a dedicated detection and weighing system, a flipping power mechanism, or an active lifting drive system. It has the advantages of ingenious structure, few failure points, low cost, and suitability for continuous drying operations.

[0029] To achieve automatic turning of the Buddha's Hand slices during the drying process, a contact ring 25 is provided on the outer circumference of the support tray 11. This contact ring 25 can form an annular protrusion along the outer periphery of the support tray 11, or it can be a ring-shaped contact component fixed to the side of the support tray 11. Its function is to form controllable contact with the external limiting rod. A first limiting rod 10 is provided on one side of each support tray 11, and a second limiting rod 12 is provided on the other side of each support tray 11. The two ends of the first limiting rod 10 and the second limiting rod 12 are respectively fixedly connected to the housing 1, thereby forming fixed guide and limiting components on the left and right sides of the support tray 11. Furthermore, the first limiting rod 10 is located above the second limiting rod 12, that is, the height of the first limiting rod 10 is higher than the second limiting rod 12, and the two are staggered in the height direction. Both the first limiting rod 10 and the second limiting rod 12 have inclined guide surfaces 101 on the side facing the contact ring 25, so that when the contact ring 25 comes into contact with it during the rising process, it will not collide violently, but will gradually generate lateral displacement and attitude deflection under the guidance of the inclined guide surfaces 101.

[0030] When the bearing plate 11 retracts upward with the drive connecting shaft 131, the contact ring 25 on the outer surface of the bearing plate 11 will first contact the second limiting rod 12 because the second limiting rod 12 is in a lower position. After contact, under the action of the inclined guide surface 101 of the second limiting rod 12, the bearing plate 11 tilts relative to the ball sleeve 133. The Buddha's hand piece inside the bearing plate 11 rolls to the lower side under the action of gravity due to the tilt angle of the bearing surface, thus completing the first automatic tumbling in the direction. Since a return spring 21 is provided between the ball sleeve 133 and the connecting sleeve 17, after the bearing plate 11 continues to rise and gradually crosses the height range of the second limiting rod 12, it will lose the continuous lateral action of the second limiting rod 12. At this time, the return spring 21 will push the bearing plate 11 back to its original basic horizontal state. After the bearing plate 11 returns to its original position, it continues to rise with the retraction of the connecting spring 6. When the contact ring 25 rises further to the height corresponding to the first limiting rod 10, it will contact the first limiting rod 10 located on the other side and at a higher height. Under the action of the inclined guide surface 101 of the first limiting rod 10, the carrier plate 11 will tilt in the opposite direction, causing the Buddha's hand slices in the carrier plate 11 to tumble in the opposite direction again, thus completing the second reverse tumbling. By first triggering the unidirectional tilting tumbling with the second limiting rod 12 and then triggering the reverse tilting tumbling with the first limiting rod 10, the Buddha's hand slices can automatically complete bidirectional tumbling at different stages throughout the drying process, so that the surface of the Buddha's hand slices originally attached to the bottom of the carrier plate 11 can also be periodically exposed to the hot airflow, significantly improving the problem that the bottom surface is always blocked and the hot air is difficult to contact in the traditional drying method.

[0031] Because the supporting tray 11 also rotates and rises during its retraction, the aforementioned automatic tilting and tumbling is not a simple tumbling in a fixed posture, but rather completed in a rotating and changing hot airflow environment. In other words, the Buddha's Hand slices continuously change their angle of attack relative to the hot airflow as the supporting tray 11 rotates as a whole, and also tumble as the supporting tray 11 tilts in stages, allowing the front, back, edges, and wrinkled / recessed areas of the Buddha's Hand slices to make more thorough contact with the hot airflow. Combined with the labyrinthine layered airflow channels within the drying chamber 8, the hot air repeatedly passes through the areas of each supporting tray 11 at different levels and in different directions, causing the Buddha's Hand slices to gradually decrease in weight while continuously undergoing rotational heating, unidirectional tumbling, resetting, and reverse tumbling processes. This achieves the goal of automatic tumbling and drying without a complex tumbling mechanism, improving heating uniformity, reducing drying dead zones, enhancing drying efficiency, and improving finished product quality.

[0032] To facilitate loading, unloading, and independent inspection of each layer of the support tray 11, a sealing box 4 is provided on the front side of the housing 1 at the position corresponding to each support tray 11. Each sealing box 4 has a handle 5 on its exterior. The sealing box 4 can be understood as an openable closed door or a pull-out partially closed structure located on the front side of the housing 1. When closed, it forms a sealed barrier around the area of ​​the corresponding support tray 11, preventing excessive leakage of hot air and maintaining the stability of the internal temperature and airflow of the drying chamber 8. When it is necessary to load fresh Buddha's hand slices, observe the drying status, or remove dried Buddha's hand slices, the operator can open the corresponding sealing box 4 through the handle 5 to operate on the corresponding layer or support device without having to open the entire housing 1, thereby improving ease of use and reducing heat loss.

[0033] In practical use, the invention first opens the sealing box 4 at the front end, and places the chopped Buddha's hand slices into the bearing cavities of each bearing tray 11. Since the Buddha's hand slices have a high moisture content and are heavy at this time, the connecting spring 6 is stretched, causing each bearing tray 11 to be in a relatively low position. Then, the sealing boxes 4 are closed, and hot air is continuously supplied to the air inlet 2 on one side of the bottom of the housing 1 through an external hot air source. After entering the drying chamber 8, the hot air forms a labyrinthine flow path between the staggered partitions 15, passing through each bearing tray 11 layer by layer and finally exiting from the air outlet 3 on the top side. As the hot air continuously heats and dries the Buddha's hand slices, the internal moisture gradually evaporates, and the overall weight gradually decreases. The connecting spring 6 gradually retracts, driving the drive connecting shaft 131 to move upward. With the cooperation of the guide slider and the arc-shaped guide groove 132, the drive connecting shaft 131 simultaneously rotates circumferentially, causing the bearing tray 11 to rotate and rise simultaneously, and the angle of the hot air relative to the Buddha's hand slices continuously changes. During its ascent, the support tray 11 first contacts the second limiting rod 12 located at the lower position. Under the action of the inclined guide surface 101 of the second limiting rod 12, it tilts to one side, causing the Buddha's hand slices to tumble for the first time. After the support tray 11 passes the second limiting rod 12, it returns to its original position with the help of the return spring 21, and continues to rise, contacting the first limiting rod 10 located at the higher position and arranged on the other side. This causes it to tilt in the opposite direction, resulting in a second reverse tumbling of the Buddha's hand slices. Through the above continuous actions, the Buddha's hand slices can automatically adjust their position, switch angles, and flip over according to their own weight throughout the drying process. This ensures that all parts of the slices can receive hot airflow for drying more fully and evenly, ultimately improving the drying efficiency and quality of the Buddha's hand slices.

[0034] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A layered circulating drying device for drying Buddha's Hand fruit, characterized in that, include: The housing (1) has an air inlet (2) on one side of the bottom and an air outlet (3) on one side of the top. The air inlet (2) is connected to a hot air source. The housing (1) has a drying chamber (8) inside. An airflow channel is provided inside the drying chamber (8) of the housing (1); One or more support devices are provided, each support device is used to support the slit Buddha's Hand slices, and each of the support devices is arranged in the drying chamber (8); Each support device can rotate and rise according to the weight of the Buddha's Hand slices to be dried, thereby switching the angle at which the hot air source enters relative to the Buddha's Hand slices.

2. The layered circulating drying device for drying Buddha's Hand fruit according to claim 1, characterized in that: The drying chamber (8) has one or more partitions (15) arranged from top to bottom, with the upper and lower partitions (15) staggered left and right to form a maze-like airflow channel.

3. The layered circulating drying device for drying Buddha's Hand fruit according to claim 2, characterized in that: Each partition (15) has a support plate (16) at its upper end corresponding to each of the bearing devices. The two sides of the support plate (16) are fixedly connected to the inner wall of the shell (1). The bearing device is connected to the support plate (16) through an elastic connection mechanism. The bearing devices are all set through the partition (15).

4. The layered circulating drying device for drying Buddha's Hand fruit according to claim 3, characterized in that: Each of the supporting devices includes a supporting plate (11), the supporting plate (11) has a supporting cavity, the Buddha's hand slice is placed in the supporting cavity, the top of the supporting plate (11) is provided with a connecting bracket (14), and the top of the connecting bracket (14) is provided with a connecting sleeve (17). It also includes a drive connecting shaft (131). Each of the partition plates (15) is provided with a shaft hole. The drive connecting shaft (131) passes through the shaft hole. A ball sleeve (133) is provided at the bottom of the drive connecting shaft (131). A spherical connecting hole is provided at the bottom of the ball sleeve (133). A ball shaft (18) is provided at the top of the connecting sleeve (17). The ball shaft (18) is rotatably installed in the spherical connecting hole.

5. The layered circulating drying device for drying Buddha's Hand fruit according to claim 4, characterized in that: A return spring (21) is provided between the ball sleeve (133) and the connecting sleeve (17).

6. The layered circulating drying device for drying Buddha's Hand fruit according to claim 5, characterized in that: The inner wall of the shaft hole is provided with a guide slider, and the outer wall of the drive connecting shaft (131) is provided with an arc-shaped guide groove (132) along the axial direction of the drive connecting shaft (131). The guide slider is snapped into the arc-shaped guide groove (132).

7. The layered circulating drying device for drying Buddha's Hand fruit according to claim 6, characterized in that: The elastic connection mechanism includes a connecting spring (6), the bottom of which is connected to the drive connecting shaft (131), and the top of which is connected to a rotating connecting shaft (9). The rotating connecting shaft (9) is installed in the bearing (7) hole of a bearing (7). The bearing (7) is fixedly installed in the bearing (7) seat at the bottom of the support plate (16). When the slit dried Buddha's hand is placed in the bearing tray (11), the connecting spring (6) is stretched. When the dried Buddha's hand loses weight due to drying, the connecting spring (6) continuously retracts.

8. The layered circulating drying device for drying Buddha's Hand fruit according to claim 1, characterized in that: A contact ring (25) is provided on the outer circular surface of the bearing plate (11). A first limiting rod (10) is provided on one side of each bearing plate (11), and a second limiting rod (12) is provided on the other side of each bearing plate (11). The two ends of the first limiting rod (10) and the second limiting rod (12) are respectively fixedly connected to the housing (1).

9. The layered circulating drying device for drying Buddha's Hand fruit according to claim 8, characterized in that: The first limiting rod (10) is located at the upper end of the second limiting rod (12). The first limiting rod (10) and the second limiting rod (12) are offset in the height direction. The first limiting rod (10) and the second limiting rod (12) are both provided with inclined guide surfaces (101) facing the contact ring (25). When the bearing plate (11) retracts upward, it contacts the first limiting rod (10) and the second limiting rod (12) in sequence, causing the bearing plate (11) to tilt.

10. The layered circulating drying device for drying Buddha's Hand fruit according to claim 9, characterized in that: Each of the front ends of the housing (1) is provided with a sealing box (4) corresponding to the bearing plate (11), and each of the sealing boxes (4) is provided with a handle (5) on the outside.

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