Dahongpao tea sunning, withering and tedding all-in-one machine and operation method

Abstract

The invention discloses a Dahongpao tea sunning, withering and tedding all-in-one machine which comprises a box body, and the box body is sequentially provided with a sunning layer, a withering layer and a tedding layer from top to bottom; an open box body structure is arranged above the sunning layer, a group of openable leaf turning plates are arranged at the bottom of the box body, and every two adjacent leaf turning plates are in lap joint with each other; a foldable movable frame is arranged at the top of the sunning layer, a photovoltaic panel is laid above the movable frame, and an infrared light irradiation light source irradiating the sunning layer is installed below the movable frame; an orange light irradiation light source is arranged at the top of the withering layer, the photovoltaic panel is connected with a storage battery, and the storage battery is electrically connected with the infrared light irradiation light source and the orange light irradiation light source; a cold and hot air unit is further arranged. According to the device, automatic operation of sunning, withering and tedding of the Dahongpao tea can be realized, the labor intensity is reduced, and the sunning, withering and tedding effects of the Dahongpao tea can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of tea processing, in particular to production and processing equipment for Dahongpao tea and a use method thereof. Background Art

[0002] Sun-drying and spreading tea leaves are important processes in making Dahongpao tea. At present, the traditional sun-drying process of Dahongpao tea mostly uses bamboo mats, cloth mats, and bamboo trays to manually carry the tea leaves to the sun for sun-drying, so the labor is large and the operation is complicated. The effect of sun-drying depends entirely on the experience of the operator. Sometimes strong light will burn the buds and leaves, and the quality cannot be consistent. Spreading tea leaves is to use a spreading machine or bamboo mats, cloth mats, and bamboo trays to place the buds and leaves indoors for natural drying. First, let them evaporate the grassy smell and slowly lose water and wither before making Dahongpao tea. Therefore, there are also problems such as simple equipment, large labor, and complicated operation. For this reason, it is necessary to adjust and optimize the existing sun-drying and spreading methods to ensure the effects of sun-drying and spreading. At the same time, it is necessary to design a new type of sun-drying, withering, and spreading machine and operation method to reduce labor intensity, reduce production costs, and optimize product quality. Summary of the invention

[0003] The purpose of the present invention is to provide a Dahongpao tea sun-drying, withering and spreading all-in-one machine and an operation method, so as to solve the problems of existing Dahongpao tea sun-drying and spreading equipment, which are cumbersome to operate, labor-intensive, and the effects of sun-drying and spreading depend entirely on the experience of the operator, and the quality cannot be consistent.

[0004] The technical solution adopted by the present invention to solve the technical problem is: a Dahongpao tea sun-drying, withering and spreading machine, comprising a box body, wherein the box body is provided with a sun-drying layer, a withering layer and a spreading layer in sequence from top to bottom;

[0005] The sun drying layer is provided with an open box structure above, and a group of openable flaps are arranged at the bottom of the box, and two adjacent flaps are overlapped with each other; a foldable movable frame is arranged on the top of the sun drying layer, a photovoltaic panel is laid on the top of the movable frame, and an infrared light source for irradiating the sun drying layer is installed below the movable frame; the photovoltaic panel adopts a double-layer light-transmitting structure, including an upper layer of 3.2MM thick ultra-white cloth-textured tempered glass and a lower layer of EVA red film layer, so that while generating photovoltaic power, it also converts sunlight into red light for sun drying, avoids burning buds and leaves, and optimizes the sun drying effect; the bottom of the withering layer is provided with the same flap as the bottom of the sun drying layer, and the top of the withering layer is provided with an orange light source, and the photovoltaic panel is connected to a battery, and the battery is connected to the infrared light source and the orange light source;

[0006] A screen conveyor belt is provided at the bottom of the green spreading layer;

[0007] A cold and hot air unit is also provided, and the cold and hot air unit is provided with a first cold air duct, a second cold air duct and a third cold air duct, and is also provided with a first hot air duct and a second hot air duct. The air outlets of the first cold air duct and the first hot air duct are arranged at one end of the green sun drying layer, the air outlets of the second cold air duct and the second hot air duct are arranged at one end of the withering layer, and the air outlet of the third cold air duct is arranged at one end of the green spreading layer.

[0008] In order to improve the effects of sun drying and withering and shorten the time of sun drying and withering, the inner walls of the sun drying layer and the withering layer are provided with reflective glass with stainless steel color to facilitate reflective sun drying and withering.

[0009] In order to improve the uniformity of withering and spreading, a group of sawtooth agitators that can rotate forward and reverse are arranged at intervals on the withering layer and the spreading layer.

[0010] Preferably, the sawtooth stirrer is made of pine wood.

[0011] To facilitate the folding and opening of the movable frame, the movable frame includes a group of mounting beams located above the green sun drying layer and support rods located on both sides of the mounting beams, and a connecting hinge is arranged between two adjacent support rods located on the same side; a sliding rod is arranged on the outer side of the box body, and a sliding sleeve is arranged at the bottom of the support rod and is sleeved on the sliding rod.

[0012] In order to improve air permeability, mesh holes are evenly distributed on the flap plate.

[0013] To facilitate the opening and closing of the flap plate, a rotating support shaft is provided on one side of the flap plate, and both ends of the rotating support shaft are rotatably supported on the box body, and one end of the rotating support shaft is provided with a rotating gear. A push-pull rod is provided on the outside of the box body, and a rack matching the rotating gear is provided on the push-pull rod. The push-pull rod moves back and forth to drive the rotating support shaft to rotate, thereby controlling the flipping of the flap plate.

[0014] In order to prevent the tea leaves from breaking when moving, the spreading layer is located on both sides of the screen conveyor belt and is provided with nano plastic soft groove edges inclined inward by 7-9 degrees, so that the tea leaves can move with soft contact and reduce the collision force.

[0015] The above-mentioned Da Hong Pao tea sun-drying, withering and spreading integrated machine and the operation method for sun-drying, withering and spreading Da Hong Pao tea include the following steps: 1) evenly spreading the tea leaves on the sun-drying layer, pushing the box into the sunlight for first sun-drying for 4.5-6.5 hours, and controlling the outdoor sun-drying temperature to be between 38-40°C by the cold and hot air blower; 2) then pushing the box into the room, turning on the infrared light source for indoor sun-drying for 2.5-3 hours, and controlling the indoor sun-drying temperature to be between 38-40°C by the cold and hot air blower. ℃; 3) After the indoor sun drying is completed, open the leaf-turning plate (2) at the bottom of the sun drying layer (11) to allow the tea leaves to fall into the withering layer (12) below, turn on the orange light irradiation light source to wither for 1.2-1.5 hours, and control the withering temperature to 36-38℃ through the hot and cold air fans; 4) After the withering is completed, open the leaf-turning plate at the bottom of the withering layer to allow the tea leaves to enter the spreading layer for 1.2-1.5 hours, and control the spreading temperature to 20-25℃ through the hot and cold air fans. After the spreading is completed, the tea leaves are output.

[0016] In order to promote the consistency of withering and spreading effects, during the withering step 3), the leaves are turned over for 2-3 minutes every 30-35 minutes by a turning device; during the spreading step 4), the leaves are turned over for 1.5-2 minutes every 30-35 minutes by a turning device.

[0017] The beneficial effects of the present invention: the sun-drying, withering and spreading all-in-one machine of the present invention adopts a three-layer structural design, and the tea leaves are sun-dried, withered and spread in sequence, with a high degree of automation, reducing the labor workload by 50-60%, improving the work efficiency by 1-2 times, and reducing the tea making cost by 45-55%, thus providing favorable prerequisites for the automatic and continuous processing of Da Hong Pao tea. The present invention adopts a combination of sunlight drying and light drying, which can solve the problem that conventional sunlight drying is easy to burn buds and leaves due to direct sunlight, resulting in browning of color and affecting the quality of the tea. Infrared light is used to simulate sunlight drying in the early morning and evening, which causes the leaf stalks to wilt and turn red, and the leaves become soft. At the same time, the activity of polyphenol oxidizing enzymes in the buds and leaves is enhanced, and the decomposition and conversion of substances such as starch, protein, and insoluble protopectin contained therein are promoted to form tea polysaccharides, amino acids, aromatic substances, and soluble pectin, thereby further optimizing the quality of Da Hong Pao tea. The present invention adopts photovoltaic panels for shading and drying, which can avoid direct sunlight and convert it into red light for drying. The drying temperature is adjusted by hot and cold fans to optimize the drying environment, thereby greatly improving the quality of the sun-dried tea.

[0018] The use of double-glass solar panels is not only conducive to the shading and sun drying of tea leaves, but also can efficiently use sunlight to generate electricity and store electricity, providing a new type of clean energy for the entire sun drying, withering and spreading equipment. The stainless steel-colored reflective glass can cause about 30% of the light to be reflected to the buds and leaves in the box for reflected light sun drying and photothermal withering, which can significantly increase the light source rate; on both sides of the cold wind spreading layer, there are nano-plastic soft groove edges inclined inward by 7-9 degrees, which can gather the buds and leaves after spreading and softly output them, which can reduce the breakage of buds during transportation.

[0019] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is the front view of the present invention.

[0021] Figure 2 It is a structural schematic diagram of the flap plate in the present invention.

[0022] Figure 3 It is a schematic diagram of the structure of the connecting hinge in the present invention.

[0023] Figure 4 It is a left view of the nano plastic soft groove edge in the present invention.

[0024] Figure 5 It is a structural schematic diagram of the sawtooth stirrer in the present invention.

[0025] Figure 6 It is a schematic diagram of the structure of the infrared light irradiation light source in the present invention.

[0026] Figure 7 It is a schematic diagram of the structure of the orange light irradiation light source in the present invention. DETAILED DESCRIPTION

[0027] Embodiment 1, as Figures 1 to 7 As shown, a Dahongpao tea sun-drying, withering and spreading machine comprises a box 1, which is a stainless steel structure, 5m long, 1.2m wide and 1.6m high. The box 1 is provided with a sun-drying layer 11, a withering layer 12 and a spreading layer 13 from top to bottom.

[0028] The sun drying layer 11 is an open box structure with a depth of 60 cm. A set of openable flaps 2 are arranged at the bottom of the box, and two adjacent flaps 2 overlap each other to ensure the reliability of the fit. In order to ensure the air permeability of the bottom, mesh holes are evenly distributed on the flaps 2.

[0029] In order to control the opening and closing of the leaf flap 2, a rotating support shaft 21 is provided on one side of the leaf flap 2, and both ends of the rotating support shaft 21 are rotatably supported on the box body 1. A rotating gear 22 is provided at one end of the rotating support shaft 21, and a push-pull rod 23 is provided on the outer side of the box body 1. A rack 24 that cooperates with the rotating gear 22 is provided on the push-pull rod 23. The push-pull rod 23 moves back and forth to drive the rotating support shaft 21 to rotate, thereby controlling the flipping of the leaf flap 2. When opened, the tea leaves can fall smoothly to the withering layer 12.

[0030] The height of the withering layer 12 is 55 cm, and the bottom of the withering layer is provided with a leaf-turning plate 2 which is the same as the bottom of the sun-drying layer 11. When it is opened, the tea leaves can smoothly fall to the spreading layer 13. The height of the spreading layer 13 is 45 cm, and the bottom of the spreading layer 13 is provided with a 16-mesh screen conveyor belt 8 to spread the buds and leaves with cold air. After spreading, the buds can be discharged through the screen conveyor belt 8. In order to reduce the phenomenon of buds colliding and breaking with the groove edge during the discharging process, the spreading layer 13 is provided with nano-plastic soft groove edges 131 inclined inward by 7-9 degrees on both sides of the screen conveyor belt 8, so that the buds and leaves after spreading can be gathered and discharged in a soft contact manner.

[0031] In order to facilitate the movement of the box, a set of universal wheels 15 are installed at the bottom of the box 1, and push-pull handles 16 are provided at the front and rear ends of the box 1. The push-pull handles 16 are in the shape of an "I" character for easy pushing and pulling.

[0032] A foldable movable frame 3 is provided on the top of the sun drying layer 11, and the movable frame 3 includes a set of mounting beams 31 located above the sun drying layer 11 and support rods 32 located on both sides of the mounting beams 31. The mounting beams 31 are arranged 20-30cm above the sunlight sun drying layer, and photovoltaic panels 4 can be laid on the mounting beams 31 to generate electricity and store electricity, and to block strong light for sun drying of tea leaves. The photovoltaic panels 4 adopt a double-layer light-transmitting structure, including an upper layer of 3.2MM thick ultra-white cloth-grained tempered glass and a lower layer of EVA red film layer. Preferably, S3Y-80-DBML double-glass layer solar panels are used for light-shielding and power generation and storage. The technical effect produced by using this double-glass layer solar panel is that its light transmittance is good, which is conducive to light-shielding of tea leaves. At the same time, the solar panel has high power generation and storage efficiency, and can make full use of the clean energy of the sun. A set of infrared light sources 5 are installed at intervals of 1.5-1.6m below the mounting beams 31 for light sun drying. In order to control the back and forth telescopic movement of the mounting crossbeam 31, a connecting hinge 33 is provided between two adjacent support rods 32 on the same side; a sliding rod 34 is provided on the outer side of the box body 1, and a sliding sleeve 35 is provided at the bottom of the support rod 32, wherein the support rod 32 at one end is fixed on the box body 1, and the other is a movable support rod structure, which can move back and forth on the sliding rod 34. The connecting hinge 33 includes two intersecting hinge pieces 331, and the two hinge pieces 331 are connected by a rotating pin in the middle, one end of the hinge piece 331 is rotatably connected to the support rod 32 pin shaft, and the other end is slidably connected to the support rod 32, that is, a sliding groove 321 is provided on the support rod 32, and a connecting pin 332 matching the sliding groove 321 is provided on the hinge piece 331.

[0033] The top of the withering layer 12 is provided with an orange light source 6, and light withering is performed by the orange light source 6. In order to improve the utilization rate of the light source, the inner walls of the sun-drying layer 11 and the withering layer 12 are also paved with stainless steel-colored reflective glass 10. 20-30% of the light can be reflected to the tea leaves in the box for sun-drying and light-heat withering, so that the light source can be further efficiently utilized.

[0034] The photovoltaic panel 4 is connected to a battery 7, which is electrically connected to the infrared light source 5 and the orange light source 6. Five S3Y-80-DBML double-glass solar panels are arranged on the mounting beam 31 at intervals of 15-20 cm to receive sunlight for power generation and storage, while blocking strong light to avoid burning the buds and leaves, and using the weak light through the intervals to dry the tea leaves in the sun. The controller, battery 7, and inverter are installed on the outside of the box 1, and the unstable current generated by the photovoltaic panel 4 is converted into a current with stable voltage by using the controller and inverter, and then transmitted to the battery 7 for storage and standby.

[0035] The infrared light source 5 comprises a first aluminum-based lamp panel 51, two IP-8 type U-shaped carbon fiber ruby ​​quartz heating tubes 52 fixedly arranged on the first aluminum-based lamp panel 51, and a white tempered glass lampshade 53 covering the IP-8 type U-shaped carbon fiber ruby ​​quartz heating tubes 52. The technical effect of adding the white tempered glass lampshade 53 to the quartz heating tubes 52 is that some infrared light can be filtered to prevent direct infrared light from burning the buds and leaves, and at the same time, the humid heat vapor emitted during sun drying can be blocked from damaging the carbon fiber heating tubes 52, and the heating tubes can be protected to prevent natural bursting.

[0036] The orange light irradiation source 6 includes a second aluminum-based lamp panel 61, two IPCH-8 circular carbon fiber ruby ​​quartz heating tubes 62 fixedly arranged on the second aluminum-based lamp panel 61, and a yellow tempered glass lampshade 63 covering the IPCH-8 circular carbon fiber ruby ​​quartz heating tubes 62, so as to convert infrared light into orange light irradiation source 6. The three orange light irradiation sources 6 are arranged above the photothermal withering layer 12 in the middle layer at an interval of 1.8m, so as to simulate the morning sunlight for photothermal withering indoors.

[0037] The outer side of the box body 1 is also provided with a hot and cold air unit 9, which provides hot and cold air for the sun drying layer 11 and the withering layer 12, and provides cold air for the spreading layer 13. The hot and cold air unit 9 includes a hot and cold air blower 96, a temperature and humidity detector 97, and an intelligent controller 98. The hot and cold air blower 96 is a YDM-P50Y-D type hot and cold air blower, which uses nickel-chromium wire electric heating as a heat source and can provide hot air of 40-50°C; it also provides cold air of 8-10°C through its refrigeration device. In order to achieve classified blowing, the hot and cold air unit 9 is provided with a first cold air duct 91, a second cold air duct 92 and a third cold air duct 93, and is also provided with a first hot air duct 94 and a second hot air duct 95. The first cold air pipe 91 is provided with two outlets, and the outlets thereof are arranged at the front and rear ends of the sun drying layer 11, respectively. The temperature of the sun drying layer is adjusted by blowing cold air convection to prevent the strong oxidation reaction caused by excessive heat and temperature, which may cause a large number of buds and leaves to turn red. The outlet of the first hot air pipe 94 is arranged at the front end of the sun drying layer, and is opened when the sun drying layer needs to be heated to solve the problem of too low temperature of the sun drying layer.

[0038] The air outlets of the second cold air duct 92 and the second hot air duct 95 are arranged at the front end of the withering layer 12. The hot air duct is used for heating and the cold air duct is used for cooling to adjust the temperature and humidity of the light and heat withering, so that the buds and leaves are in a suitable withering environment, which makes the leaf quality become soft, and at the same time enhances the activity of the biological enzymes in the buds and leaves, so as to decompose and transform the starch, protein, insoluble protopectin and other substances contained therein, and form glucose, amino acids, soluble pectin and other substances, so as to further optimize the quality of tea leaves. The third cold air duct 93 is provided with two, and its air outlet is arranged at the rear end of the green layer 13 respectively. By blowing cold air, the leaf temperature is lowered, and the sunlight humid heat is emitted, so as to prevent the buds and leaves from yellowing and reddening. It can also be used to blow cold air from the rear end to promote the smooth discharge of the buds and leaves. The hot and cold air unit 9 is preferentially connected to the battery 7, and the electric energy generated by the photovoltaic panel 4 is used to drive the motor to produce hot and cold air. When the electric energy generated by the solar panel is insufficient, the external power supply is used to drive the motor to produce hot and cold air. The temperature and humidity detector 97 is a JT-M300 three-in-one air temperature, humidity and oxygen sensor. The three sensor probes are installed in the middle of each layer so as to be connected to the intelligent controller for control. The intelligent controller 98 is a PLC intelligent control device. The hot air temperature, hot air volume, cold air temperature and cold air volume can be set by the program control cabinet and touch screen, and intelligent control is performed according to the signal detected by the temperature, humidity and oxygen three-in-one sensor.

[0039] A set of sawtooth stirrers 14 that can rotate forwards or backwards are arranged at intervals on the withering layer 12 and the spreading layer 13. The sawtooth stirrers 14 are made of pine wood. By rotating forwards or backwards, the buds and leaves can be stirred manually to make the buds and leaves wither and spread evenly. The benefits of using the pine wood stirrer 1.6 are that it can reduce the breakage of buds and leaves and add pine wood fragrance to optimize quality.

[0040] Embodiment 2:

[0041] The method for sun-drying, withering and spreading Dahongpao tea using the above-mentioned Dahongpao tea sun-drying, withering and spreading machine comprises the following steps:

[0042] 1) Sun drying: Spread the tea leaves evenly on the sun drying layer 11, push the box into the sun first, place the front end of the box to the east in the morning, and sun the tea leaves facing the morning sun for 2-2.5 hours; place the box horizontally at noon, and sun the tea leaves facing the backlight for 1-1.5 hours; place the front end of the box to the west in the evening, and sun the tea leaves facing the sunset for 1.5-2.5 hours. In order to make the buds and leaves dry evenly, turn the leaves manually for 2-3 minutes every 30-40 minutes in the morning and evening, and turn the leaves manually for 1-2 minutes every 25-30 minutes at noon. When the temperature and humidity detector 97 in the sun drying layer measures ≥42°C, blow cold air through the first cold air duct 91 to cool down the temperature, so that the temperature in the box is controlled between 38-40°C. The beneficial effects of drying green leaves facing the morning sun, backlight, and sunset light are to cause some water in the fresh leaves to evaporate, the leaves to wither, the leaf edges to turn red, the water loss rate to be between 15-20%, and the green grass smell to volatilize, converting a large amount of aromatic substances to reveal the floral fragrance.

[0043] 2) Then push the box into the room, turn on the infrared light source 5 to dry the tea leaves indoors for 2.5-3 hours, and control the indoor drying temperature to be between 38-40°C through the hot and cold air blowers; 3) After the indoor drying is completed, open the leaf-turning plate 2 at the bottom of the drying layer 11 to allow the tea leaves to fall into the withering layer 12 below, and stir the fallen tea leaves evenly through the stirrer, then turn on the orange light source 6 to wither for 1.2-1.5 hours, and turn the leaves over for 2-3 minutes every 30-35 minutes through the stirrer. At the same time, use the second cold air duct 92 and the second hot air duct 95 to regulate the temperature of the solar thermal withering so that the light thermal withering temperature in the box is controlled between 36-38°C. 4) After the withering is completed, open the leaf-turning plate 2 at the bottom of the withering layer 12, stir the fallen tea leaves evenly through the stirrer, and blow cold air to spread the tea leaves. Settings: The temperature in the box is 20-25℃, the cold wind spreading time is 1.2-1.5h, during which the leaves are turned over by the stirrer for 1.5-2min every 30-35min, and the cold wind spreading effect is used to dissipate the heat and humid air from the sun to soften the leaves, preventing the buds and leaves from turning yellow or red. After the spreading is completed, the tea leaves are output.

[0044] The present invention is described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention; or the above concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A Da Hong Pao tea sun drying, withering and spreading machine, characterized by: The invention comprises a box body (1), wherein the box body (1) is provided with a sun drying layer (11), a withering layer (12) and a spreading layer (13) in sequence from top to bottom; The sun drying layer (11) is provided with an open box structure above, and a group of openable flaps (2) are arranged at the bottom of the box, and two adjacent flaps (2) are overlapped with each other; a foldable movable frame (3) is arranged on the top of the sun drying layer (11), a photovoltaic panel (4) is laid above the movable frame (3), and an infrared light source (5) for irradiating the sun drying layer (11) is installed below the movable frame (3); the photovoltaic panel (4) adopts a double-layer light-transmitting structure, including an upper layer of ultra-white cloth-textured tempered glass and a lower layer of EVA red film layer; The bottom of the withering layer (12) is provided with a leaf-turning plate (2) which is the same as the bottom of the sun drying layer (11); the top of the withering layer (12) is provided with an orange light irradiation light source (6); the photovoltaic panel (4) is connected to a storage battery (7); and the storage battery (7) is connected to the infrared light irradiation light source (5) and the orange light irradiation light source (6); A screen conveyor belt (8) is provided at the bottom of the green spreading layer (13); A cold and hot air unit (9) is also provided, and the cold and hot air unit (9) is provided with a first cold air duct (91), a second cold air duct (92) and a third cold air duct (93), and is also provided with a first hot air duct (94) and a second hot air duct (95). The air outlets of the first cold air duct (91) and the first hot air duct (94) are arranged at one end of the sun drying layer (11), the air outlets of the second cold air duct (92) and the second hot air duct (95) are arranged at one end of the withering layer (12), and the air outlet of the third cold air duct (93) is arranged at one end of the spreading layer (13).

2. The Da Hong Pao tea sun drying, withering and spreading machine as claimed in claim 1, characterized in that: The inner walls of the sun drying layer (11) and the withering layer (12) are provided with reflective glass (10) of stainless steel color.

3. The Da Hong Pao tea sun drying, withering and spreading machine as claimed in claim 1, characterized in that: A group of sawtooth stirrers (14) capable of rotating forward and reverse are arranged at intervals on the withering layer (12) and the green spreading layer (13).

4. The Da Hong Pao tea sun drying, withering and spreading machine as claimed in claim 3, characterized in that: The sawtooth stirrer (14) is made of pine wood.

5. The Da Hong Pao tea sun drying, withering and spreading machine as claimed in claim 1, characterized in that: The movable frame (3) comprises a group of mounting crossbeams (31) located above the sun drying layer (11) and support rods (32) located on both sides of the mounting crossbeams (31), and a connecting hinge (33) is provided between two adjacent support rods (32) located on the same side; a sliding rod (34) is provided on the outer side of the box body (1), and a sliding sleeve (35) is provided at the bottom of the support rod (32) and is sleeved on the sliding rod (34).

6. The Da Hong Pao tea sun drying, withering and spreading machine as claimed in claim 1, characterized in that: The flap plate (2) is evenly distributed with mesh holes.

7. The Da Hong Pao tea sun drying, withering and spreading machine as claimed in claim 6, characterized in that: A rotating support shaft (21) is provided on one side of the flap plate (2), and both ends of the rotating support shaft (21) are rotatably supported on the box body (1). A rotating gear (22) is provided on one end of the rotating support shaft (21). A push-pull rod (23) is provided on the outer side of the box body (1), and a rack (24) cooperating with the rotating gear (22) is provided on the push-pull rod (23). The push-pull rod (23) moves back and forth to drive the rotating support shaft (21) to rotate, thereby controlling the flipping of the flap plate (2).

8. The Da Hong Pao tea sun drying, withering and spreading machine as claimed in claim 1, characterized in that: The green spreading layer (13) is located on both sides of the screen conveyor belt (8) and is provided with nano plastic soft groove edges (131) inclined inwardly by 7-9 degrees.

9. A method for sun-drying, withering and spreading Dahongpao tea using the Dahongpao tea sun-drying, withering and spreading machine as claimed in any one of claims 1 to 8, comprising the following steps: 1) The tea leaves are evenly spread on the sun drying layer (11), and the box is pushed into the sunlight for sun drying for 4.5-6.5 hours, and the outdoor sun drying temperature is controlled to be 38-40°C by the hot and cold air blower; 2) Then the box is pushed into the room, and the infrared light source (5) is turned on for indoor sun drying for 2.5-3 hours, and the indoor sun drying temperature is controlled to be between 38-40°C by the hot and cold air blower; 3) After the indoor sun drying is completed, the leaf turning plate (2) at the bottom of the sun drying layer (11) is opened to allow the tea leaves to fall into the withering layer (12) below, and the orange light source (6) is turned on for withering for 1.2-1.5 hours, and the withering temperature is controlled to be 36-38°C by the hot and cold air blower; 4) After the withering is completed, the leaf turning plate (2) at the bottom of the withering layer (12) is opened, and the tea leaves enter the spreading layer for spreading for 1.2-1.5 hours, and the spreading temperature is controlled to be 20-25°C by the hot and cold air blower. After the spreading is completed, the tea leaves are output.

10. The method for sun-drying, withering and spreading Da Hong Pao tea according to claim 9, characterized in that: During the withering step 3), the leaves are turned over for 2-3 minutes every 30-35 minutes by a turning device; during the spreading step 4), the leaves are turned over for 1.5-2 minutes every 30-35 minutes by a turning device.

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