A tea roasting control device

Abstract

This utility model discloses a tea roasting control device, including a housing. Inside the housing is a support plate with two sets of partitions vertically arranged on the support plate. Ventilation slots are formed at the lower part of the partitions, and an air inlet chamber is located between the two partitions. Multiple drying fans are installed inside the air inlet chamber. A stirring mechanism is installed in the roasting cavity outside the partitions. The stirring mechanism includes a rotating shaft with multiple stirring paddles mounted on its side. A drive mechanism is connected to the bottom of the rotating shaft, which passes through the support plate. This utility model has a scientifically sound and reasonable structural design. The two sets of partitions on the support plate, in conjunction with the drying fans in the air inlet chamber, and the ventilation slots at the lower part of the partitions, form a layered convection airflow channel, allowing hot air to flow through all areas of the roasting cavity, solving the problem of uneven hot air distribution in traditional equipment. The drive mechanism drives the multiple stirring paddles on the rotating shaft to achieve three-dimensional tumbling of the tea leaves, solving the problem of localized overheating caused by insufficient stirring in traditional methods.

Description

Technical Field

[0001] This utility model relates to the field of tea roasting control technology, and in particular to a tea roasting control device. Background Technology

[0002] Tea roasting is a crucial step in tea production, involving temperature control to remove moisture and enhance aroma, directly impacting the color, aroma, flavor, and shelf life of the tea. Traditional roasting equipment suffers from two main problems: first, uneven hot air circulation leads to significant temperature differences within the roasting chamber, resulting in localized over-roasting and under-roasting, affecting the stability of tea quality; second, the poorly designed stirring mechanism causes tea leaves to accumulate at the bottom or side walls of the chamber, resulting in uneven heating. Furthermore, traditional equipment often relies on a single air temperature sensor for temperature detection, which fails to accurately reflect the actual heating state of the tea leaves, leading to delayed temperature control. Therefore, we propose a tea roasting control device. Utility Model Content

[0003] To address the aforementioned problems, this invention provides a tea roasting control device. This invention solves the problems mentioned in the background section.

[0004] This utility model provides the following technical solution: a tea roasting control device, including a box body, a support plate inside the box body, two sets of partitions vertically arranged on the support plate, ventilation slots at the bottom of the partitions, an air inlet chamber between the two partitions, multiple drying fans installed inside the air inlet chamber, a stirring mechanism arranged in the roasting chamber outside the partitions, the stirring mechanism including a rotating shaft, multiple stirring paddles installed on the side of the rotating shaft, a drive mechanism connected through the support plate at the bottom of the rotating shaft, a power supply and a PID controller installed below the support plate, drying lamps installed on the inner wall of the roasting chamber, a pull plate detachably installed above the roasting chamber, an air temperature sensor installed below the pull plate, and a contact temperature sensor embedded above the partitions.

[0005] In the above solution, the top of the box is detachably connected to a box cover.

[0006] In the above scheme, a filter screen is installed inside the ventilation slot.

[0007] In the above scheme, the edge of the air inlet chamber is hinged with a side door.

[0008] In the above scheme, the drive mechanism includes a synchronous shaft fixed at the bottom of the rotating shaft, two synchronous shafts are connected by a synchronous belt drive, and a motor is connected to the bottom of one of the synchronous shafts.

[0009] In the above scheme, the side wall of the box is hinged with a material picking baffle, and the pull plate is provided with ventilation holes.

[0010] In the above scheme, the PID controller is electrically connected to the power supply, drying lamp, air temperature sensor and contact temperature sensor via wires.

[0011] The advantages and beneficial effects of this utility model are as follows: This utility model provides a tea roasting control device. Through the cooperation of two sets of partitions on the support plate and the drying fan in the air inlet chamber, combined with the ventilation slots at the bottom of the partitions, a layered convection air duct is formed, allowing hot air to flow through all areas of the roasting chamber, solving the problem of uneven hot air distribution in traditional equipment. Through the synchronous shaft and synchronous belt drive of the drive mechanism, multiple sets of stirring paddles on the rotating shaft are driven to achieve three-dimensional tumbling of the tea leaves, preventing tea leaves from accumulating at the bottom of the chamber and solving the problem of localized overheating caused by insufficient stirring in traditional methods. Through the cooperation of the air temperature sensor below the pull plate and the contact temperature sensor on the partition, dual-channel temperature signal acquisition is performed and transmitted to the PID controller, forming a closed-loop control to achieve high-precision temperature control, solving the problem of inaccurate detection by traditional single sensors. Attached Figure Description

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0015] Figure 3 This is a schematic diagram of the control structure of this utility model.

[0016] In the diagram: 1. Box body; 11. Box cover; 12. Support plate; 13. Partition; 14. Ventilation slot; 15. Air inlet chamber; 16. Drying fan; 17. Side door; 18. Rotating shaft; 19. Agitator; 2. Synchronous shaft; 21. Synchronous belt; 22. Motor; 23. Power supply; 24. PID controller; 25. Drying lamp; 26. Pull plate; 27. Air temperature sensor; 28. Contact temperature sensor; 29. ​​Material handling baffle. Detailed Implementation

[0017] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0018] like Figure 1-3 As shown, this utility model is a tea roasting control device, including a box body 1. A support plate 12 is provided inside the box body 1. Two sets of partitions 13 are vertically arranged on the support plate 12. A ventilation slot 14 is opened at the lower part of the partition 13. An air inlet chamber 15 is provided between the two partitions 13. Multiple drying fans 16 are installed inside the air inlet chamber 15. A stirring mechanism is provided in the roasting chamber outside the partition 13. The stirring mechanism includes a rotating shaft 18. Multiple stirring paddles 19 are installed on the side of the rotating shaft 18. The bottom of the rotating shaft 18 passes through the support plate 12 and is connected to a drive mechanism. A power supply 23 and a PID controller 24 are installed below the support plate 12. A drying lamp 25 is installed on the inner wall of the roasting chamber. A pull plate 26 is detachably installed above the roasting chamber. An air temperature sensor 27 is installed below the pull plate 26. A contact temperature sensor 28 is embedded above the partition 13. The support plate 12 divides the interior of the box 1 into two layers: the upper layer is the baking area and the lower layer is the control area. The drying fan 16 of the air inlet 15 generates airflow, which enters the baking chamber through the ventilation slot 14 and forms a heat circulation system in conjunction with the drying lamp 25. The dual temperature sensors detect the ambient air temperature and the actual temperature of the tea leaves, respectively, to provide a precise control basis for the PID controller 24.

[0019] By cooperating with the drying fan 16 of the air inlet chamber 15 through the two sets of baffles 13 on the support plate 12, and the ventilation slots 14 at the bottom of the baffles 13, a layered convection air duct is formed, allowing hot air to flow through all areas of the baking chamber, thus solving the problem of uneven hot air distribution in traditional equipment. Through the synchronous shaft 2 and synchronous belt 21 of the drive mechanism, multiple sets of stirring paddles 19 on the rotating shaft 18 are driven to achieve three-dimensional tumbling of the tea leaves, preventing the tea leaves from accumulating at the bottom of the chamber, thus solving the problem of local overheating caused by insufficient stirring in traditional equipment. Through the cooperation of the air temperature sensor 27 below the pull plate 26 and the contact temperature sensor 28 on the baffle 13, the temperature signal is collected through dual channels and transmitted to the PID controller 24 to form a closed-loop control, realizing high-precision temperature regulation, thus solving the problem of inaccurate detection by traditional single sensors.

[0020] In the above solution, a lid 11 is detachably connected to the top of the housing 1. The lid 11 is connected by a snap-fit ​​mechanism, and can be opened to inspect and clean the top structure of the baking cavity, improving the convenience of equipment maintenance.

[0021] In the above solution, a filter screen is installed inside the ventilation slot 14. The filter screen is made of high-temperature resistant metal material, which can effectively prevent tea leaves from entering the air inlet chamber 15 and avoid the accumulation of residue on the blades of the drying fan 16, thus affecting the air output.

[0022] In the above scheme, the edge of the air inlet chamber 15 is hinged with a side door 17. The side door 17 is connected by a hinge, and after opening, the drying fan 16 inside the air inlet chamber 15 can be directly inspected and replaced without disassembling the overall structure.

[0023] In the above scheme, the driving mechanism includes a synchronous shaft 2 fixed to the bottom of the rotating shaft 18. The two synchronous shafts 2 are connected by a synchronous belt 21, and a motor 22 is connected to the bottom of one of the synchronous shafts 2. The synchronous belt 21 transmission can ensure that the rotation speed of the two rotating shafts 18 is consistent, realize synchronous stirring of the baking chambers on both sides, and avoid uneven baking caused by the difference in rotation speed.

[0024] In the above scheme, the side wall of the box 1 is hinged with a material-retrieving baffle 29, and the pull plate 26 is provided with ventilation holes. The material-retrieving baffle 29 is made of transparent high-temperature resistant material, which is convenient for observing the roasting status and allows the tea leaves to be taken out directly after opening; the ventilation holes of the pull plate 26 can discharge the water vapor generated during the roasting process to prevent the humidity inside the cavity from exceeding the standard.

[0025] In the above scheme, the PID controller 24 is electrically connected to the power supply 23, the drying lamp 25, the air temperature sensor 27, and the contact temperature sensor 28 via wires. The PID controller 24 employs a 2-degree-of-freedom algorithm and can dynamically adjust the power of the drying lamp 25 at a high-speed sampling rate based on real-time data from the dual sensors, achieving high temperature control accuracy.

[0026] Working principle:

[0027] In this tea roasting control equipment, the power supply 23 first powers all components, and the PID controller 24 initializes and sets the roasting temperature parameters. After the drying lamp 25 is activated, it preheats the roasting chamber. Simultaneously, the drying fan 16 in the air inlet 15 starts working, and the generated airflow enters the roasting chamber through the ventilation slot 14 at the bottom of the partition 13, forming a hot air circulation. During the flow of hot air within the roasting chamber, some moisture is expelled through the ventilation holes on the pull plate 26, maintaining a dry environment inside the chamber. In the temperature detection system, the air temperature sensor 27 collects the ambient temperature inside the roasting chamber in real time, and the contact temperature sensor 28 directly contacts the tea leaves to detect their actual temperature. Both sets of data are transmitted synchronously to the PID controller 24. When the detected temperature deviates from the set value, the PID controller 24 immediately adjusts the heating power of the drying lamp 25 to achieve dynamic and precise temperature control. The stirring mechanism is driven by the motor 22, which drives two synchronous shafts 2 to rotate synchronously via the synchronous belt 21, thereby causing the stirring paddle 19 on the rotating shaft 18 to perform circular motion within the roasting chamber. The stirring paddle 19 agitates the tea leaves three-dimensionally, preventing them from piling up and ensuring even contact with the hot airflow for consistent heating. After roasting, the drying lamp 25 and drying fan 16 are turned off. Once the temperature drops to a safe range, the tea leaves can be removed by opening the material removal baffle 29 on the side wall of the chamber 1. For cleaning or maintenance, the top of the roasting chamber can be accessed by removing the chamber cover 11, or the drying fan 16 can be inspected by opening the side door 17 of the air inlet 15. The filter screen in the ventilation slot 14 can be removed and cleaned periodically to ensure long-term stable operation of the equipment.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tea leaf roasting regulation apparatus comprising a cabinet (1), characterized in that: The box (1) is equipped with a support plate (12) inside. Two sets of partitions (13) are vertically arranged on the support plate (12). Ventilation slots (14) are opened at the lower part of the partitions (13). An air inlet chamber (15) is provided between the two partitions (13). Multiple drying fans (16) are installed inside the air inlet chamber (15). A stirring mechanism is provided in the baking cavity outside the partitions (13). The stirring mechanism includes a rotating shaft (18). The side of the rotating shaft (18) is equipped with a stirring mechanism. The oven is equipped with multiple stirring paddles (19). The bottom of the rotating shaft (18) passes through the support plate (12) and is connected to a drive mechanism. A power supply (23) and a PID controller (24) are installed below the support plate (12). A drying lamp (25) is installed on the inner wall of the baking chamber. A pull plate (26) is detachably installed above the baking chamber. An air temperature sensor (27) is installed below the pull plate (26). A contact temperature sensor (28) is embedded above the partition plate (13).

2. The tea roasting control device according to claim 1, wherein The top of the box (1) is detachably connected to a box cover (11).

3. The tea roasting control device according to claim 1, wherein A filter screen is installed inside the ventilation slot (14).

4. The tea roasting control device according to claim 1, wherein The edge of the air intake chamber (15) is hinged with a side door (17).

5. The tea roasting control device according to claim 1, wherein The drive mechanism includes a synchronous shaft (2) fixed at the bottom of the rotating shaft (18), the two synchronous shafts (2) are connected by a synchronous belt (21), and a motor (22) is connected to the bottom of one of the synchronous shafts (2).

6. The tea roasting control device according to claim 1, wherein The side wall of the box (1) is hinged with a material picking baffle (29), and the pull plate (26) is provided with ventilation holes.

7. The tea roasting control device according to claim 1, wherein The PID controller (24) is electrically connected to the power supply (23), the drying lamp (25), the air temperature sensor (27), and the contact temperature sensor (28) via wires.

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