Water content detection and drying integrated device for sunning tea leaves

Abstract

The utility model discloses a water content detecting and drying integrated device for sunning tea leaves. The water content detecting and drying integrated device mainly comprises a longitudinal moving sliding mechanism, a vertical lifting mechanism, a transverse moving control mechanism and a detecting and drying integrated device, the longitudinal movement sliding mechanism drives a longitudinal movement sliding block seat to move synchronously in the longitudinal direction through a longitudinal movement driving device; the vertical lifting mechanism can move along with the longitudinal moving slide block seat, and a transverse moving control rod crossing over the sunning table top is horizontally lifted through a lifting driving device; the transverse movement control mechanism controls transverse movement of the detecting and drying integrated device. The detecting and drying integrated device integrates the moisture content detecting function and the drying and heating function, the moisture content detecting function is used for monitoring the moisture content of tea materials in real time, the drying and heating function conducts drying treatment on tea according to the detecting result, and rapid dehydration of the tea is effectively promoted. The whole system works cooperatively, and automatic detection and compensation type auxiliary drying in the tea sunning process are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of tea drying, mainly to the field of sun-drying equipment, and specifically to an integrated device for detecting and drying moisture content of sun-drying tea. Background Art

[0002] The unique aroma and taste of large-leaf tea stems from its unique germplasm resources and processing techniques. The processing process for large-leaf tea is as follows: fresh leaf picking → spreading and airing → withering → rolling and twisting → sun-drying. Sun-drying is a key step in developing the aroma of large-leaf tea. Sun-drying allows the fresh leaves to lose moisture and react with sunlight, promoting the synthesis of aromatic compounds within the fresh leaves, thereby inducing and enhancing the aroma and flavor of the tea. Sun-drying involves spreading the rolled tea leaves evenly on a bamboo sieve or directly on the floor. Sunlight reduces the moisture content and grassy aroma of the tea leaves, enhances the activity of tea polyphenol oxidase, and promotes changes in the tea leaves' contents and aroma, resulting in a richer aroma and a fresher taste. Currently, tea processing in large-leaf tea-producing areas is largely carried out using traditional manual labor. During the peak spring tea picking season, rain and fog are common, making the sun-drying process particularly vulnerable to weather conditions, which directly impacts the quality of large-leaf tea.

[0003] Traditionally, tea farmers use sunlight to dry their tea leaves. While bamboo screens offer excellent air permeability, promoting the development of tea aroma, they also reduce yields and require more labor. Drying tea leaves on cement floors, on the other hand, lacks air permeability, creates an unpleasant aroma, and can easily cause the leaves to die, significantly impacting tea quality. Consequently, the actual tea drying process is affected by numerous factors. Rainy days make drying difficult, and sunlight intensity may not meet the required drying requirements, leading to mold and mildew in fresh leaves with high moisture content. Conversely, excessive drying can also affect tea quality, resulting in uneven tea product quality. Breaking through the technical bottlenecks of sun-drying tea leaves on rainy and foggy days and addressing the climatic constraints of large-leaf tea drying is crucial. However, the market currently lacks a device that can quickly and reliably measure the moisture content of sun-dried tea leaves. Furthermore, if the moisture content needs to be reduced rapidly in specific areas of the drying platform, microwave drying technology is required, but there is no integrated device on the market that combines these two functions. Utility Model Content

[0004] It can be seen that the traditional processing technology has a low degree of modernization and a large labor force. In addition, the main large-leaf tea-producing areas are often rainy during the tea picking season, which restricts the production and processing efficiency of large-leaf tea. To address the shortcomings and defects of the above-mentioned existing technologies, the inventor team has developed and designed an intelligent sun-drying control system and method. It can timely detect the moisture content of fresh leaves spread after withering and rolling, and carry out targeted regional drying according to actual conditions. This realizes the integrated application of moisture detection technology and drying during the sun-drying process of large-leaf tea. It can well solve the current problem of manual experience in controlling the moisture content of tea leaves in a timely manner, resulting in large differences in the final quality of a batch of sun-dried tea leaves, low homogenization quality, and affecting the quality of sun-drying tea leaves. In this system, it is necessary to apply a device that can quickly move to various points on the sun-drying table, and can perform moisture detection and compensatory material drying in a grid-like manner according to a predetermined path. Therefore, it is necessary for this device to have the function of quickly moving to the target area and performing moisture detection or drying operations. Therefore, the inventors' team designed an integrated device for moisture detection and drying of sun-dried tea leaves, which can be used to achieve the above-mentioned goals. It has stable and high-precision motion control, meets the requirements of precise displacement, and integrates moisture detection and drying functions. The moisture detection and drying areas can be overlapped, and through clever flipping, it can switch between the two modes. Therefore, a single path can be used to perform moisture detection and drying operations at the precise target location. Specifically, the utility model is implemented as follows:

[0005] A device for detecting and drying moisture in sun-drying tea leaves is installed on a sun-drying table for use, comprising: two sets of longitudinal sliding mechanisms, each set at opposite sides of the sun-drying table; each set comprises a longitudinal slide rail, a longitudinal drive device and a longitudinal transmission mechanism; the longitudinal slider seat is installed on the longitudinal slide rail; the longitudinal drive device can drive the longitudinal slider seat to move synchronously in the longitudinal direction; there are two sets of vertical lifting mechanisms, each set on a longitudinal slider seat and can move with the longitudinal slider seat, each set comprises a vertically arranged lifting stroke mechanism, a lifting drive device and a lifting block, and a transverse control mechanism is installed between the two lifting blocks The space spans above the tea drying table, and the two lifting drive devices can operate synchronously to drive the transverse control rod to rise and fall horizontally; the transverse control mechanism includes a transverse slide rail, a transverse drive device and a transverse transmission mechanism, the detection and drying integrated device is installed on the transverse slide rail and connected to the transverse transmission mechanism, the transverse drive device can drive the detection and drying integrated device to move laterally along the transverse slide block; the detection and drying integrated device includes a moisture content detection device and a drying and heating device, the moisture content detection device is used to detect the moisture content of the tea material, and the drying and heating device is used to dry the tea material to accelerate the reduction of its moisture content.

[0006] Furthermore, the longitudinal transmission mechanism is a transmission belt, one end of which is connected to the motor output shaft of the longitudinal driving device, and the other end is connected to the driven rotating shaft. The longitudinal sliding block seat can be slidably installed on the longitudinal sliding rail and is fixedly connected to the transmission belt. The longitudinal driving device can drive the transmission belt to move by rotating forward and backward, thereby driving the longitudinal sliding block seat to move longitudinally along the longitudinal sliding rail synchronously.

[0007] Furthermore, the lifting stroke mechanism includes a lifting slide rail and a lifting screw. The lifting screw is connected to the motor of the lifting drive device. The lifting block is sleeve-type mounted on the lifting slide rail and is installed in conjunction with the lifting screw thread. The lifting block can be lifted and lowered along the lifting slide rail as the lifting screw rotates forward and backward.

[0008] Furthermore, the two ends of the transverse slide rail are fixedly connected to the inner sides of the two lifting blocks and remain parallel to the drying table. The transverse transmission mechanism is a transverse screw, which is connected to the motor shaft of the transverse drive device. The detection and drying integrated device includes a mounting sleeve, which is mounted on the transverse slide rail and is installed in conjunction with the transverse screw thread. The mounting sleeve can move laterally along the transverse slide rail with the forward and reverse rotation of the transverse screw; the detection and drying integrated device is installed on the mounting sleeve.

[0009] Furthermore, the detection and drying integrated device includes: a rotary drive motor, a bidirectional mounting plate, a moisture content detection device and a drying and heating device; the rotary drive motor is installed on the mounting sleeve, and its rotating shaft is horizontally arranged along the longitudinal direction and extends horizontally along the longitudinal direction, the bidirectional mounting plate is connected to the rotating shaft of the rotary drive motor, and the rotary drive motor can drive the bidirectional mounting plate to rotate with the rotating shaft; the moisture content detection device and the drying and heating device are respectively installed on both sides of the bidirectional mounting plate.

[0010] Furthermore, the rotary drive motor can rotate 180° in reverse, or only rotate 180° each time, so as to always keep the working surfaces of the moisture content detection device and the drying and heating device parallel to the drying table.

[0011] Furthermore, the moisture content detection device is a near-infrared moisture meter; and the drying and heating device is a microwave dryer or a far-infrared dryer.

[0012] Furthermore, the two sets of longitudinal drive devices and lifting drive devices of the longitudinal sliding mechanism and the vertical lifting mechanism use servo motors and are equipped with corresponding servo drivers, which can provide synchronous, same speed and same torque control. The same speed command value can be set to the two servo drivers through programming to ensure that the two motors maintain synchronous operation; or a rotary encoder is installed on each motor, which can synchronously control the two motors to maintain synchronous operation through the encoder.

[0013] The working principle of the present invention: the integrated device for detecting and drying moisture content of tea leaves during sun-drying of the present invention is arranged on the side of the sun-drying platform for installation, and its size and specifications are adapted to the size of the sun-drying platform. The main moving parts include a longitudinal sliding mechanism, a vertical lifting mechanism and a transverse control mechanism, which are all connected to the control end and uniformly receive the control of the control end program, and can drive the detection and drying integrated device to form displacement of any point or surface relative to the sun-drying platform. The longitudinal sliding mechanism and the transverse control mechanism control the plane position displacement of the detection and drying integrated device, and the vertical lifting mechanism controls its height position relative to the sun-drying platform, and can move to and stay at any point or area on the sun-drying platform according to the control of the control end; the detection and drying integrated device combines the dual-function hardware structure of the moisture content detector and the drying equipment, thereby realizing the function of online detection of the moisture content of the tea material on the sun-drying platform, or compensatory drying of the tea material on the sun-drying platform, and accelerating the rapid decrease of the moisture content of the material in the local area.

[0014] Beneficial technical effects of the utility model:

[0015] 1. Through the ingenious design of rotating flip-over integrated moisture detection and drying functions, a common set of path information can be used to complete detection and drying operations in the target area, avoiding the conflicts that need to be considered when separate equipment moves and works in the same area, and facilitating the optimization of path design. It can timely obtain and process the moisture content data of tea leaves during the sun-drying process, facilitating rapid response and precise displacement when adjusting the drying strategy according to actual conditions, and providing a usable hardware base facility to improve the quality consistency of each batch of tea.

[0016] 2. The servo motor drive, combined with encoder feedback, can achieve synchronous operation of longitudinal, lifting and lateral movement, ensuring stable and reliable movement without jamming. It can be used to set different working modes and path planning through programming. The system can flexibly respond to various sun-drying needs and changing conditions, and perform movement control on various paths.

[0017] 3. This integrated solution represents a technological advancement in tea processing, providing producers with advanced tools to enhance their market competitiveness. By enabling efficient monitoring and control of moisture content during processing, and by providing timely compensation and drying assistance for areas of tea that are under-drying, this solution facilitates rapid convergence of moisture content, ensuring high product quality and homogeneity, and meeting growing consumer demand for premium tea. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural stereogram of an integrated device for detecting and drying moisture in sun-drying tea leaves according to the utility model;

[0019] Figure 2This is a structural stereogram of the longitudinal sliding mechanism of the utility model;

[0020] Figure 3 This is a structural perspective diagram of the transverse movement control mechanism of the utility model;

[0021] Figure 4 This is a structural stereogram of the vertical lifting mechanism of the utility model;

[0022] Figure 5 This is a structural stereogram of the utility model's integrated detection and drying device;

[0023] Figure 6 This is a schematic diagram of the flipping of the integrated detection and drying device of the utility model;

[0024] Figure 7 This is a schematic diagram of the combined use of an integrated device for detecting and drying moisture in sun-drying tea leaves according to the present invention;

[0025] in:

[0026] 10 - longitudinal slide rail, 11 - longitudinal drive device, 12 - longitudinal transmission mechanism, 13 - longitudinal slider seat, 14 - transmission belt, 15 - motor output shaft, 16 - driven shaft,

[0027] 20 - lifting mechanism, 21 - lifting drive device, 22 - lifting rail, 23 - lifting screw, 24 - lifting block,

[0028] 30 - transverse slide rail, 31 - transverse drive device, 32 - transverse transmission mechanism, 33 - installation sleeve,

[0029] 40 - integrated detection and drying device, 41 - moisture content detection device, 42 - drying and heating device, 43 - rotation drive motor, 44 - bidirectional mounting plate. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0031] Example 1: An integrated device for detecting and drying moisture in sun-drying tea leaves, the main functional components of which include:

[0032] Longitudinal movement is handled by the longitudinal sliding mechanism, which consists of two sets of longitudinal rails 10, a longitudinal drive unit 11 with a servo motor, and a longitudinal transmission mechanism 12. Each set of longitudinal rails 10 is installed on opposite sides of the drying platform. The longitudinal drive unit 11 is connected to the longitudinal slider base 13 via a transmission belt 14. When the motor rotates forward or reverse, it drives the transmission belt 14, thereby causing the longitudinal slider base 13 to move synchronously along the longitudinal direction of the longitudinal rails 10. The transmission belt 14 can be a belt, chain belt, or toothed belt to achieve Y-axis movement.

[0033] Vertical lifting function: The vertical lifting mechanism is responsible for operation, and is composed of two sets of lifting travel mechanisms 20 including lifting slide rails 22 and lifting screws 23, a lifting drive device 21 servo motor and a lifting block 24. Each lifting mechanism is installed on a longitudinal sliding block seat 13 and can move with the longitudinal sliding block seat 13. The motor of the lifting drive device 21 is connected to the lifting block 24 through the lifting screw 23. When the motor rotates, the lifting screw 23 rotates accordingly, driving the lifting block 24 to move up and down along the lifting slide rail 22. Since the lateral control mechanism between the two lifting blocks 24 is fixed horizontally, this allows the lateral control mechanism to be adjusted in height as a whole, so as to be closer to or further away from the tea leaves on the drying table. The change in vertical distance can make it easier to adjust the accuracy of the moisture detector, or the effective working distance of the drying module, and can adjust the drying area, which will also affect the drying efficiency, which is specifically determined by the actual power parameters of the drying module.

[0034] Transverse movement function: It is realized by the transverse control mechanism, which includes a transverse slide 30, a transverse drive device 31 servo motor and a transverse transmission mechanism 32 transverse screw. The two ends of the transverse slide 30 are fixed on the inner side of the two lifting blocks 24 and kept parallel to the drying table. The transverse drive device 31 drives the detection and drying integrated device 40 to move laterally along the transverse slide 30 through the transverse screw. The transverse screw is threadedly engaged with the mounting sleeve 33, so that the mounting sleeve 33 can move left and right along the transverse slide 30 as the transverse screw rotates. The detection and drying integrated device 40 is installed on the mounting sleeve 33, so that it can move laterally on the X-axis according to the control of the transverse drive device 31.

[0035] Moisture detection and drying functions are implemented by an integrated detection and drying device 40, which is mounted on the mounting sleeve 33 of the transverse control mechanism and includes a rotary drive motor 43, a bidirectional mounting plate 44, a moisture detection device 41 (a near-infrared moisture meter), and a drying and heating device 42 (a microwave dryer or far-infrared dryer). When moisture detection is required, the rotary drive motor 43 rotates the bidirectional mounting plate 44 to a position where the moisture detection device 41 faces downward. At this point, the moisture detection device 41 faces the tea leaves on the drying table and begins performing non-contact moisture content measurement. When drying a specific area, the rotary drive motor 43 rotates the bidirectional mounting plate 44 to a position where the drying and heating device 42 faces downward. The drying and heating device 42 is then activated, providing targeted heating to the target area to accelerate the evaporation of moisture from the tea leaves in that area.

[0036] This embodiment also includes a servo control system, where both the longitudinal drive device 11 and the lifting drive device 21 use servo motors and are equipped with corresponding servo drivers. These servo motors can be programmed to have the same speed command value to ensure that the two motors maintain synchronous operation.

[0037] For example, encoder feedback: A rotary encoder can also be installed on each servo motor to use the feedback signal to further improve the synchronization accuracy and ensure the consistency and accuracy of the entire system during multi-axis linkage.

[0038] The comprehensive workflow in practice:

[0039] Initialization positioning: The system first determines the initial position of the detection and drying integrated device 40 through the longitudinal sliding mechanism and the vertical lifting mechanism.

[0040] Grid path planning: Based on the pre-set path, the system begins to detect or dry point by point in a grid-like manner.

[0041] Moisture detection: After reaching the designated position, the rotary drive motor 43 is adjusted to the moisture content detection device 41 facing downward, the height position is determined by the vertical lifting mechanism, and the longitudinal sliding mechanism and the transverse control machine cooperate to start moving above the green tea drying platform based on the grid path, passing through the entire path in sequence, and collecting the initial moisture content of the tea material on the entire green tea drying platform; completing the rapid moisture detection.

[0042] Data Analysis: Acquired moisture data is analyzed in real time to determine whether additional drying treatment is required for certain areas. If necessary, the longitudinal sliding mechanism and transverse control unit work together to drive the integrated detection and drying device 40 to the area requiring additional drying treatment. The drive motor 43 then rotates, switching the drying and heating device 42 downward to perform targeted, quantitative drying on the specific area.

[0043] During the above process, multiple drying compensation operations can be carried out at multiple points according to the program, and multiple moisture detections can be carried out in the entire area or local areas. This integrated device not only improves the moisture monitoring efficiency during the sun-drying process of large-leaf tea, but also can flexibly adjust the drying strategy according to actual conditions, thereby improving the consistency of product quality and reducing the moisture content instability caused by traditional sun-drying.

[0044] It should be understood that the above-described specific embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and do not constitute limitations of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the scope of protection of the present invention. In addition, the appended claims of the present invention are intended to cover all variations and modifications that fall within the scope and metes and bounds of the appended claims, or equivalents thereof.

Claims

1. An integrated device for detecting and drying moisture in sun-drying tea leaves, installed on a sun-drying table, characterized in that include: There are two sets of longitudinal sliding mechanisms, each set is arranged at the opposite sides of the drying platform, each set includes a longitudinal sliding rail (10), a longitudinal driving device (11) and a longitudinal transmission mechanism (12), and the longitudinal sliding block seat (13) is installed on the longitudinal sliding rail (10); the longitudinal driving device (11) can drive the longitudinal sliding block seat (13) to move synchronously along the longitudinal direction; There are two sets of vertical lifting mechanisms, each of which is arranged on a longitudinal sliding block seat (13) and can move with the longitudinal sliding block seat (13). Each set includes a vertically arranged lifting stroke mechanism (20), a lifting drive device (21) and a lifting block (24). The transverse control mechanism is installed between the two lifting blocks (24) and spans above the drying table. The two lifting drive devices (21) can operate synchronously to drive the transverse control rod to move horizontally. The transverse movement control mechanism includes a transverse movement slide rail (30), a transverse movement driving device (31) and a transverse movement transmission mechanism (32); the detection and drying integrated device (40) is installed on the transverse movement slide rail (30) and connected to the transverse movement transmission mechanism (32); the transverse movement driving device (31) can drive the detection and drying integrated device (40) to move transversely along the transverse movement slide rail; The detection and drying integrated device (40) comprises a moisture content detection device (41) and a drying and heating device (42). The moisture content detection device (41) is used to detect the moisture content of the tea material, and the drying and heating device (42) is used to dry the tea material to accelerate the reduction of its moisture content.

2. The integrated device for detecting and drying moisture in sun-drying tea leaves according to claim 1, characterized in that: The longitudinal transmission mechanism (12) is a transmission belt (14), one end of which is connected to the motor output shaft (15) of the longitudinal driving device (11), and the other end is connected to the driven rotating shaft (16). The longitudinal sliding block seat (13) is slidably installed on the longitudinal sliding rail (10) and is fixedly connected to the transmission belt (14). The longitudinal driving device (11) can drive the transmission belt (14) to move by forward and reverse rotation, thereby driving the longitudinal sliding block seat (13) to move longitudinally along the longitudinal sliding rail (10) synchronously.

3. The integrated device for detecting and drying moisture content of sun-drying tea leaves according to claim 1, characterized in that: The lifting stroke mechanism (20) includes a lifting slide rail (22) and a lifting screw (23). The lifting screw (23) is connected to the motor of the lifting drive device (21). The lifting block (24) is sleeve-mounted on the lifting slide rail (22) and is threadedly mounted on the lifting screw (23). The lifting block (24) can be lifted and lowered along the lifting slide rail (22) as the lifting screw (23) rotates forward and backward.

4. The integrated device for detecting and drying moisture content of sun-drying tea leaves according to claim 2, characterized in that: The two ends of the transverse slide rail (30) are fixedly connected to the inner sides of the two lifting blocks (24) and are kept parallel to the drying table. The transverse transmission mechanism (32) is a transverse screw, which is connected to the motor shaft of the transverse drive device (31). The detection and drying integrated device (40) includes a mounting sleeve (33). The mounting sleeve (33) is mounted on the transverse slide rail (30) and is installed in accordance with the thread of the transverse screw. The mounting sleeve (33) can move transversely along the transverse slide rail (30) as the transverse screw rotates forward and backward. The detection and drying integrated device (40) is installed on the mounting sleeve (33).

5. The integrated device for detecting and drying moisture content of sun-drying tea leaves according to claim 4, characterized in that: The detection and drying integrated device (40) comprises: a rotary drive motor (43), a bidirectional mounting plate (44), a moisture content detection device (41) and a drying and heating device (42); the rotary drive motor (43) is mounted on the mounting sleeve (33), and its rotation axis is arranged horizontally along the longitudinal direction and extends horizontally along the longitudinal direction; the bidirectional mounting plate (44) is connected to the rotation axis of the rotary drive motor (43), and the rotary drive motor (43) can drive the bidirectional mounting plate (44) to rotate along with the rotation axis; the moisture content detection device (41) and the drying and heating device (42) are respectively mounted on both sides of the bidirectional mounting plate (44).

6. The integrated device for detecting and drying moisture in sun-drying tea leaves according to claim 5, characterized in that: The rotary drive motor (43) can rotate 180 degrees in reverse, or only rotate 180 degrees each time, so as to always keep the working surfaces of the moisture content detection device (41) and the drying and heating device (42) parallel to the drying table.

7. The integrated device for detecting and drying moisture content of sun-drying tea leaves according to claim 1, characterized in that: The moisture content detection device (41) is a near-infrared moisture meter; the drying and heating device (42) is a microwave dryer or a far-infrared dryer.

8. The integrated device for detecting and drying moisture content of sun-drying tea leaves according to claim 1, characterized in that: The two sets of longitudinal driving devices (11) and lifting driving devices (21) of the longitudinal sliding mechanism and the vertical lifting mechanism adopt servo motors and are equipped with corresponding servo drivers, which can provide synchronous, same-speed and same-torque control. The same speed command value can be set to the two servo drivers through programming to ensure that the two motors maintain synchronous operation; or a rotary encoder is installed on each motor, and the encoder can be used to synchronously control the two motors to maintain synchronous operation.

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