Temperature control forming and frying equipment for green tea
By designing a rotating window and a debris recovery mechanism in the green tea drying equipment, the problems of over-drying of tea leaves and water vapor accumulation are solved, uniform heating of tea leaves and efficient debris processing are achieved, and the quality of green tea and equipment efficiency are improved.
Patent Information
- Application Number
- CN202511322813.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-16
- Publication Date
- 2025-10-21
AI Technical Summary
In existing green tea drying equipment, the continuous blowing of hot air causes the tea leaves to be over-dried, the accumulation of water vapor affects the quality of the tea leaves, and the efficiency of residue processing is low.
A temperature-controlled forming and frying-drying equipment has been designed. By symmetrically opening rotating windows on the frying-drying drum, intermittent communication between hot air and water vapor is achieved. Combined with a debris recovery mechanism, hot air is used to remove moisture and moisten the debris, which is then squeezed into tea bricks.
The tea leaves are heated evenly, which prevents them from being over-dried and allows water vapor to be discharged in time. This improves the quality of the tea leaves and the efficiency of scrap recovery, and reduces scrap scattering and pollution.
Smart Images
Figure CN120819981A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of stir-frying and drying equipment, and more specifically, relates to a temperature-controlled, forming and stir-frying and drying equipment for green tea. Background Art
[0002] Green tea, one of the six traditional Chinese teas, utilizes a core process that utilizes fresh leaves that are either unfermented or minimally fermented, preserving natural ingredients like tea polyphenols and caffeine. This allows for a uniquely refreshing taste and health benefits. Its production involves key steps such as withering, rolling, and drying. Stir-frying, a crucial drying technique, not only impacts the tea's appearance and aroma but also embodies millennia of craftsmanship.
[0003] The current green tea frying and drying equipment has been found to have at least the following technical problems: First, in the frying and drying process of green tea, the hot air of some existing equipment is continuously blown into the frying and drying drum through a single channel, so that the tea leaves are continuously blown by hot air during the frying and drying process. This situation can easily cause the tea leaves to become too dry and brittle due to excessive water loss. This will not only further aggravate the breakage of the tea leaves during mechanical turning and increase the amount of debris, but also destroy the original fresh taste and intrinsic quality of the tea leaves, and ultimately reduce the grade and commercial value of the finished green tea.
[0004] Second, in the traditional frying and drying process of green tea, the high-temperature frying and drying process will cause the moisture inside the tea leaves to evaporate due to heat, forming a large amount of water vapor. The water vapor is easy to accumulate in the enclosed space such as the drum, resulting in untimely discharge of water vapor. The accumulated water vapor will increase the humidity inside the equipment, which will not only prolong the frying and drying time of the tea leaves, but also easily cause local moisture in the tea leaves, affecting the stability of the color and aroma of the tea leaves, and may even cause the quality of the tea leaves to deteriorate due to the hot and humid environment. It cannot meet the low humidity environment requirement of green tea frying and drying, which restricts the quality improvement of the finished green tea. Summary of the Invention
[0005] In order to solve the above technical problems, the present invention provides a temperature-controlled, forming, and drying device for green tea to solve the above problems.
[0006] The tea frying drum is provided with a green tea frying unit, the green tea frying unit being connected to the heating unit under the mechanical fan, and the green tea ventilation window being fixedly mounted on the window at the upper end of the green tea frying drum; a heat filter mechanism is provided under the mechanical fan, the heat filter mechanism is used for the mechanical fan to drive hot air to blow the green tea in the green tea frying drum through the green tea ventilation window to make the green tea frying drum churn, filter out green tea residue and enter the ventilation filter, and take away water vapor generated by the high temperature of the green tea; a residue recovery mechanism is provided on the side of the ventilation filter, the residue recovery mechanism can collect the green tea residue entering the ventilation filter and squeeze the green tea residue into tea bricks.
[0007] Preferably, the air heat filtering mechanism includes a drum shell, two windows are provided on the upper end of the drum shell, the windows provided on the upper end of the drum shell can be connected to the green tea ventilation window, the mechanical fan is fixedly installed in the window on the upper end of the drum shell, the ventilation filter is rotatably installed in the drum shell, the green tea frying drum is fixedly installed in the ventilation filter, a second transmission shaft is fixedly installed on the side wall of the green tea frying drum, a flat gear is fixedly installed on the second transmission shaft, a first transmission shaft is provided under the green tea frying drum, the first transmission shaft is connected to the servo motor through a fixed output shaft, a flat gear is provided on the first transmission shaft, and a synchronous belt is provided between the first transmission shaft and the second transmission shaft.
[0008] Preferably, the debris recovery mechanism includes a frying and drying equipment base, a hot air duct is provided in the frying and drying equipment base, one end of the hot air duct is connected to a window opened at the lower end of the drum shell, a debris forming device shell is provided on the side of the frying and drying equipment base, a window is provided on the debris forming device shell, the other end of the hot air duct is fixedly connected to the window on the debris forming device shell, an extrusion forming plate is provided in the debris forming device shell, two gas rods are provided on the side of the debris forming device shell, a sliding plate is provided in the debris forming device shell, and a window is provided on the debris forming device shell. The sliding plate is slidably installed in the window of the slag forming device shell, and a gas rod is fixedly installed under the slag forming device shell, and the sliding plate and the pushing rod of the gas rod under the slag forming device shell are fixedly installed. A flip closing plate is rotatably installed in the slag forming device shell, and a gravity detection plate is provided in the slag forming device shell, and the gravity detection plate is fixedly installed with the sliding plate. A connecting rod is rotatably installed on the flip closing plate, and the other end of the connecting rod is rotatably installed on the gravity detection plate. A limit slot is provided on the gravity detection plate, and a pressure sensor and a signal generator are provided on the gravity detection plate.
[0009] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, by providing symmetrically provided rotating windows on the green tea frying and drying drum and corresponding windows on the drum shell, the windows are intermittently connected by the rotation of the drum. When the drum rotates, its windows rotate together with it, forming a periodic connection and disconnection with the shell windows. When connected, hot air driven by a mechanical fan is blown in through the shell windows and the drum windows, pushing the green tea to churn to ensure uniform heating. When disconnected, the direct blowing of hot air is reduced to avoid excessive drying of the tea leaves due to continuous exposure to hot air.
[0010] In the present invention, by providing symmetrical rotating windows on the green tea frying and drying drum and corresponding windows on the drum shell, the rotating design of the symmetrical windows allows for more efficient water vapor discharge. When hot air is blown into the window on one side, the window on the other side opens synchronously, and the water vapor generated by high temperature is brought out of the drum in time to prevent water vapor accumulation and the tea from getting damp. This intermittently connected rotating structure not only coordinates the rhythm of hot air input and water vapor discharge, but also avoids the problem of uneven drying in a single on-off mode, effectively ensuring the appropriate moisture content and quality stability of the green tea after frying.
[0011] In the present invention, a hot air duct connecting the drum shell and the debris forming device shell is provided to achieve directional guidance and efficient utilization of moisture generated in the frying and drying process. When the hot air driven by the mechanical fan pushes the green tea to churn in the frying and drying drum, it will promptly take away the moisture caused by high temperature. The moisture is directed to the debris forming device through the hot air duct. The moisture brought into the debris forming device can naturally moisten the collected green tea debris, making its texture easier to aggregate, making it easier to extrude the molding plate to press the debris into a tea brick with a compact structure, reducing the scattering of debris, and improving the molding efficiency of debris recovery. This "taking away + utilizing" design of moisture not only optimizes the frying and drying environment, but also helps to recycle the debris and improve the overall efficiency of the equipment.
[0012] The invention provides a sliding plate, a flipping closing plate and a connecting rod. The sliding plate is slidably installed in the window of the outer shell of the debris forming device, and its movement is driven by the gas rod below. When the sliding plate is pushed outward by the gas rod to deliver the formed tea bricks, the connecting rod moves synchronously with the gravity detection plate, driving the flipping closing plate to flip 90 degrees clockwise, closing the gap left after the sliding plate is removed. This design can block the falling path of the debris at the moment of tea brick transportation, completely avoiding the waste and pollution caused by the leakage of unformed debris from the gap, and ensuring that the debris is always accumulated in an orderly manner in the device, waiting for extrusion molding. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the hot air duct structure of the present invention; Figure 3 This is a schematic diagram of the base structure of the stir-frying equipment of the present invention; Figure 4 It is a schematic diagram of the drum shell structure of the present invention; Figure 5 This is a schematic diagram of the green tea frying and drying drum structure of the present invention; Figure 6 It is a schematic structural diagram of the sliding plate of the present invention; Figure 7 This is a schematic diagram of the shell structure of the slag crushing forming device of the present invention; Figure 8 It is a schematic diagram of the structure of the flip closing plate of the present invention.
[0014] In the figure, the correspondence between the component names and the drawing numbers is: 1. Drum shell; 2. Stir-frying equipment base; 3. First transmission shaft; 4. Mechanical fan; 5. Hot air duct; 6. Slag forming device shell; 7. Second transmission shaft; 8. Green tea frying drum; 9. Green tea ventilation window; 10. Ventilation filter; 13. Sliding plate; 14. Flip closing plate; 15. Extrusion molding plate; 16. Gravity detection plate; 17. Connecting rod. DETAILED DESCRIPTION
[0015] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.
[0016] See also Figures 1-8 The present invention provides a temperature-controlled, forming, and frying-drying device for green tea, comprising a mechanical fan 4. A heating unit is provided below the mechanical fan 4. The mechanical fan 4 can drive hot air to blow the green tea, so that the green tea can be rolled and fried more evenly. A ventilation filter 10 is provided below the mechanical fan 4. The ventilation filter 10 is a breathable green tea residue intercepting filter. The ventilation filter 10 is used to intercept the green tea residue and can pass air. A threaded protrusion can be provided inside the ventilation filter 10 for driving the green tea residue to move. A green tea frying and drying drum is provided inside the ventilation filter 10. 8. A disturbance plate for turning the green tea is provided in the green tea frying and drying drum 8. Two windows are symmetrically provided on the green tea frying and drying drum 8. A heating coil is provided on the circumferential surface of the green tea frying and drying drum 8. The heating coil is connected to the heating unit below the mechanical fan 4. The heating coil is used to heat the green tea frying and drying drum 8 through the heating coil to provide heat for the frying and drying green tea. A green tea ventilation window 9 is fixedly installed on the window of the green tea frying and drying drum 8. The green tea ventilation window 9 is used to screen out unqualified green tea in the green tea frying and drying drum 8 and green tea debris broken due to frying.
[0017] A wind-heat filtering mechanism is provided below the mechanical fan 4. The wind-heat filtering mechanism is used for the mechanical fan 4 to drive hot air to blow the green tea in the green tea frying and drying drum 8 through the green tea ventilation window 9, so that the green tea is tumbled in the green tea frying and drying drum 8, effectively filtering out the green tea debris into the ventilation filter 10, and can increase the uniformity of frying, and take away the water vapor generated by the high temperature of the green tea. A debris recovery mechanism is provided on the side of the ventilation filter 10. The debris recovery mechanism can collect the green tea debris entering the ventilation filter 10, and use the water vapor taken away by the hot air to moisten the green tea debris, and squeeze the green tea debris into tea bricks, which is convenient for the staff to recycle and reuse the green tea debris.
[0018] In this embodiment, Figure 2 、 Figure 3 、 Figure 4 and Figure 5As shown, the air-heat filtering mechanism includes a drum shell 1, and two windows are provided on the upper end of the drum shell 1. The windows provided on the upper end of the drum shell 1 can be connected to the green tea ventilation window 9. The mechanical fan 4 is fixedly installed in the window on the upper end of the drum shell 1, and the ventilation filter 10 is rotatably installed in the drum shell 1. The green tea frying and drying drum 8 is fixedly installed in the ventilation filter 10. A second transmission shaft 7 is fixedly installed on the side wall of the green tea frying and drying drum 8, and a flat gear is fixedly installed on the second transmission shaft 7. A first transmission shaft 3 is provided under the green tea frying and drying drum 8, and the first transmission shaft 3 is connected to the servo motor through a fixed output shaft. A flat gear is provided on the first transmission shaft 3, and a synchronous belt is provided between the flat gears on the first transmission shaft 3 and the second transmission shaft 7. The flat gears are all engaged with the synchronous belt. When the servo motor drives the first transmission shaft 3 to rotate, it drives the green tea frying and drying drum 8 to rotate through the synchronous belt. When the green tea frying and drying drum 8 rotates, the green tea ventilation window 9 is intermittently connected with the window opened on the drum shell 1. Since the two green tea ventilation windows 9 are symmetrically installed, the mechanical fan 4 blows out hot air from one of the green tea ventilation windows 9 through the windows on the drum shell 1, and can take away the water vapor released in the green tea from the other green tea ventilation window 9. The intermittent blowing of hot air can prevent the green tea from being dried too dry, resulting in unqualified tea making. When the hot air is blown into the green tea frying and drying drum 8, it can drive the green tea to churn. During the churning process, unqualified green tea fragments will fall into the ventilation filter 10 through the filter on the green tea ventilation window 9.
[0019] In this embodiment, Figure 6 、 Figure 7 、 Figure 8As shown, the debris recovery mechanism includes a frying and drying equipment base 2, a hot air duct 5 is provided in the frying and drying equipment base 2, and the hot air duct 5 is a hot air pipe. One end of the hot air duct 5 is connected to the window opened at the lower end of the drum shell 1, and a debris forming device shell 6 is provided on the side of the frying and drying equipment base 2. A window is provided on the debris forming device shell 6, and the other end of the hot air duct 5 is fixedly connected to the window on the debris forming device shell 6. The hot air duct 5 can bring the moisture released by the tea leaves in the green tea frying and drying drum 8 into the debris forming device shell 6 to moisten the tea debris. An extrusion forming plate 15 is provided in the debris forming device shell 6, and two gas rods are provided on the side of the debris forming device shell 6. The extrusion forming plate 15 is fixed The tea leaves which have fallen into the shell 6 of the crushing device and are moistened by moisture are squeezed into tea bricks. A sliding plate 13 is provided in the shell 6 of the crushing device. A window is provided on the shell 6 of the crushing device. The sliding plate 13 is slidably installed in the window of the shell 6 of the crushing device. A gas rod is fixedly installed below the shell 6 of the crushing device. The sliding plate 13 and the pushing rod of the gas rod below the shell 6 of the crushing device are fixedly installed. A flip closing plate 14 is rotatably installed in the shell 6 of the crushing device. A gravity detection device is provided in the shell 6 of the crushing device. The gravity detection plate 16 is fixedly installed with the sliding plate 13, and a connecting rod 17 is rotatably installed on the flip closing plate 14. The other end of the connecting rod 17 is rotatably installed on the gravity detection plate 16. A limit slot that can limit the connecting rod 17 is provided on the gravity detection plate 16. A pressure sensor and a signal generator are provided on the gravity detection plate 16. When the pressure sensor detects that the weight of the tea brick on the gravity detection plate 16 exceeds the set value, the signal generator will control the gas rod under the shell 6 of the crushing forming device to operate and push the push rod. The push rod drives the sliding plate 13 to move. At this time, the tea brick will also move to the outside of the crushing forming device shell 6. Driven by the connecting rod 17 and the gravity detection plate 16, the tea brick will move to the outside of the crushing forming device shell 6. Under the action of the limiting slot, the flip closing plate 14 will flip 90 degrees clockwise, and the gap on the debris forming device shell 6 will be filled after the sliding plate 13 is moved to prevent the tea debris from falling out of the debris forming device shell 6. At the same time, the signal generator will control the two gas rods on the side of the debris forming device shell 6 to stop operating, and the extrusion forming plate 15 will stop pushing the tea debris. After the staff takes out the tea brick on the gravity detection plate 16, the pressure sensor will control the push rod of the gas rod under the debris forming device shell 6 to retract, the sliding plate 13, the gravity detection plate 16 and the connecting rod 17 will return to their positions, and the two gas rods on the side of the debris forming device shell 6 will also start to push the extrusion forming plate 15 to move intermittently.
[0020] Working principle: The first step is to start the equipment. The servo motor drives the first transmission shaft 3 to rotate through the fixed output shaft. The flat gear on the first transmission shaft 3 drives the second transmission shaft 7 through the synchronous belt to rotate the green tea frying and drying drum 8. At the same time, the heating unit under the mechanical fan 4 works, and the heating coil heats the green tea frying and drying drum 8. The mechanical fan 4 blows hot air into the drum through the upper window of the drum shell 1 and the green tea ventilation window 9. The hot air drives the green tea in the green tea frying and drying drum 8 to be flipped and tumbled by the disturbance plate, making the frying and drying more uniform. The water vapor generated by the high temperature is discharged from another green tea ventilation window 9, and the unqualified debris falls into the ventilation filter 10 through the green tea ventilation window 9.
[0021] In the second step, the ventilation filter 10 rotates in the drum shell 1, and the threaded protrusions inside it drive the debris to move. The debris enters the hot air duct 5 through the window opened at the lower end of the drum shell 1. One end of the hot air duct 5 is connected to the drum shell 1, and the other end is connected to the window on the debris forming device shell 6. The hot air carrying green tea vapor is introduced into the debris forming device shell 6, and the water vapor is used to moisten the incoming debris, preparing for subsequent extrusion into bricks. At this time, the debris maintains an appropriate humidity under the action of hot air and water vapor, and gradually accumulates in the debris forming device shell 6, waiting for further processing.
[0022] In the third step, the debris falls onto the gravity detection plate 16 in the shell 6 of the debris forming device, and the two gas rods on the side push the extrusion forming plate 15 to intermittently extrude the debris. When the pressure sensor on the gravity detection plate 16 detects that the weight meets the standard, the signal generator controls the gas rod below to push the sliding plate 13, driving the gravity detection plate 16 to move, and the connecting rod 17 pulls the flipping closing plate 14 to flip 90 degrees clockwise to fill the gap after the sliding plate 13 moves. At this time, the extrusion forming plate 15 stops working. After the staff takes away the tea brick, the pressure sensor controls the gas rod to reset, and the sliding plate 13, gravity detection plate 16, connecting rod 17 and flipping closing plate 14 return to their positions, and the extrusion forming plate 15 starts working again.
[0023] The embodiments of the present invention are presented for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application and to enable those skilled in the art to understand the invention and design various embodiments with various modifications as suited for specific applications.
Claims
1. A temperature-controlled, forming, and drying device for green tea, comprising a mechanical fan (4), characterized in that: A heating unit is provided below the mechanical fan (4), a ventilation filter (10) is provided below the mechanical fan (4), a threaded protrusion can be provided in the ventilation filter (10), a green tea frying drum (8) is provided in the ventilation filter (10), a disturbance plate is provided in the green tea frying drum (8), two windows are symmetrically provided on the green tea frying drum (8), a heating coil is provided on the circumferential surface of the green tea frying drum (8), the heating coil is connected to the heating unit below the mechanical fan (4), and a green tea ventilation window (9) is fixedly installed on the window at the upper end of the green tea frying drum (8); A wind-heat filtering mechanism is provided below the mechanical fan (4). The wind-heat filtering mechanism is used for the mechanical fan (4) to drive hot air through the green tea ventilation window (9) to blow the green tea in the green tea drying drum (8) so that the green tea tumbles in the green tea drying drum (8), filters out green tea debris and enters the ventilation filter (10), and takes away water vapor generated by the high temperature of the green tea. A debris recovery mechanism is provided on the side of the ventilation filter (10). The debris recovery mechanism can collect the green tea debris entering the ventilation filter (10) and squeeze the green tea debris into tea bricks.
2. The temperature-controlled, forming, and frying equipment for green tea according to claim 1, characterized in that: The air-heat filtering mechanism comprises a drum shell (1), and two windows are provided at the upper end of the drum shell (1). The windows provided at the upper end of the drum shell (1) can be communicated with the green tea ventilation window (9).
3. The temperature-controlled, forming, and frying equipment for green tea according to claim 2, wherein: The mechanical fan (4) is fixedly mounted in a window at the upper end of the drum shell (1); the ventilation filter (10) is rotatably mounted in the drum shell (1); the green tea frying and drying drum (8) is fixedly mounted in the ventilation filter (10); and a second transmission shaft (7) is fixedly mounted on the side wall of the green tea frying and drying drum (8).
4. The temperature-controlled, forming, and frying equipment for green tea according to claim 3, wherein: A flat gear is fixedly mounted on the second transmission shaft (7), and a first transmission shaft (3) is provided below the green tea frying and drying drum (8). The first transmission shaft (3) is connected to the servo motor via a fixed output shaft.
5. The temperature-controlled, forming, and frying equipment for green tea according to claim 4, characterized in that: A spur gear is provided on the first transmission shaft (3), and a synchronous belt is provided between the first transmission shaft (3) and the second transmission shaft (7).
6. The temperature-controlled, forming, and drying equipment for green tea according to claim 5, characterized in that: The debris recovery mechanism comprises a stir-frying equipment base (2), a hot air duct (5) is provided in the stir-frying equipment base (2), one end of the hot air duct (5) is connected to a window opened at the lower end of the drum shell (1), and a debris forming device shell (6) is provided on the side of the stir-frying equipment base (2).
7. The temperature-controlled, forming, and frying equipment for green tea according to claim 6, characterized in that: A window is provided on the shell (6) of the slag forming device, and the other end of the hot air duct (5) is fixedly connected to the window on the shell (6) of the slag forming device. An extruded forming plate (15) is provided in the shell (6) of the slag forming device, and two gas rods are provided on the side of the shell (6) of the slag forming device.
8. The temperature-controlled, forming, and frying equipment for green tea according to claim 7, characterized in that: A sliding plate (13) is provided in the shell (6) of the slag forming device. A window is provided on the shell (6) of the slag forming device. The sliding plate (13) is slidably installed in the window of the shell (6) of the slag forming device. A gas rod is fixedly installed below the shell (6) of the slag forming device.
9. The temperature-controlled, forming, and frying equipment for green tea according to claim 8, characterized in that: The sliding plate (13) and the push rod of the gas rod below the slag forming device housing (6) are fixedly installed, a flip closing plate (14) is rotatably installed in the slag forming device housing (6), and a gravity detection plate (16) is provided in the slag forming device housing (6), and the gravity detection plate (16) is fixedly installed with the sliding plate (13).
10. The temperature-controlled, forming, and frying equipment for green tea according to claim 9, characterized in that: A connecting rod (17) is rotatably mounted on the flip closing plate (14), and the other end of the connecting rod (17) is rotatably mounted on the gravity detection plate (16). A limit slot is provided on the gravity detection plate (16), and a pressure sensor and a signal generator are provided on the gravity detection plate (16).