A continuous production line for small can anglican white tea

Abstract

The application discloses a kind of small tank anji white tea continuous production line, including the conveying device of weighing and impurity removal, shaking machine, withering sunning and spreading machine, fixation machine, windmill conveying device, nitrogen filling anti-oxidation continuous rolling and breaking machine group and vertical strip famous tea shaping and drying machine group in turn.The application can make tea produce the flavor of white tea by the withering, hot air wilting, sunning and cold air spreading of tea through shaking machine and withering sunning and spreading machine.Then, through fixation machine, the fermentation oxidation of tea is rapidly terminated, and the anti-oxidation rolling and breaking of nitrogen filling anti-oxidation continuous rolling and breaking machine group can prevent further oxidation of tea.Finally, through vertical strip famous tea shaping and drying machine group, the obtained white tea is tightly round and straight in appearance, slightly with white hair, yellow and green in color, golden and clear in soup color, similar to beer color, fresh and sweet in taste, fresh and elegant in tea aroma, highlighting the quality of green tea, and having the flavor of white tea.

Description

Technical Field

[0001] This invention relates to the field of tea machinery technology, and in particular to a continuous production line for small-can Anji white tea. Background Technology

[0002] Anji White Tea, produced in Anji County, Huzhou City, Zhejiang Province, is made from the fresh leaves of the "Baiye No. 1" tea tree. It is processed through a series of steps including "withering, fixation, shaping and rolling, cooling, initial drying, baking, and finishing". Its quality characteristics are: resembling phoenix feathers in shape, with a bright and oily luster, clear and bright liquor, and a fresh and lasting aroma. Due to its high amino acid content of 5-8%, it has a particularly fresh and refreshing taste without any bitterness.

[0003] Many people mistakenly believe that Anji White Tea, based on its name, is a type of white tea. However, in terms of its processing, it belongs to the green tea category. Therefore, some consumers often purchase Anji White Tea as white tea in tea markets or online, even though its green tea flavor is not what they prefer. To increase market share and produce green tea with a white tea flavor to meet the needs of consumers who prefer white tea, it is clear that existing green tea processing procedures and production lines cannot meet the requirements of modern white tea. Therefore, it is necessary to improve the production process and production lines to produce Anji White Tea with a white tea flavor. Simultaneously, considerations must be given to the compactness and continuity of the production line, ease of layout, reduced space occupancy, increased production efficiency, and reduced production costs. Summary of the Invention

[0004] The purpose of this invention is to provide a continuous production line for small-canned Anji white tea, which solves the problem that existing green tea processing production lines cannot meet the processing needs of new Anji white tea with white tea flavor.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a continuous production line for small-canned Anji white tea, including a shaking machine, a withering and sun-drying machine, a fixing machine, a nitrogen-filled antioxidant continuous kneading and de-clumping machine and a vertical strip-shaped famous tea shaping and drying machine connected in sequence through a conveying device;

[0006] The withering and sun-drying machine includes a withering frame, a hot air withering trough on the upper layer of the withering frame, a light-drying layer in the middle layer, and a cold air spreading layer on the lower layer; a set of variable light lamps are spaced apart on the top of the light-drying layer, and the variable light lamps can emit red, white and orange light; an atomizer is also provided to spray the light-drying layer.

[0007] The nitrogen-filled, antioxidant, continuous kneading and de-caking unit includes a set of kneading machines and a vibrating de-caking conveyor connected to the discharge port of the kneading machines; the kneading machine includes a kneading disc, a kneading drum, and a drum cover installed on the kneading drum; the drum cover includes a bottom pressure plate and an upper sealing plate, a nitrogen-filled chamber is provided between the bottom pressure plate and the upper sealing plate, a nitrogen-filled air inlet valve is provided on the upper sealing plate, an air outlet valve is provided at the center of the bottom pressure plate, and a nitrogen-filled pipe extending into the kneading drum is connected to the air outlet valve;

[0008] The vibratory deblocking conveyor includes a deblocking frame, a vibratory deblocking trough arranged inclined upward on the deblocking frame, a continuous corrugated groove at the bottom of the vibratory deblocking trough, and a drive device for moving the vibratory deblocking trough; a set of dispersing filters are also arranged at intervals inside the vibratory deblocking trough.

[0009] The vertical strip-shaped premium tea shaping and drying machine unit includes a closed chamber and a shaping and drying machine frame set inside the chamber. The shaping and drying machine frame is equipped with a microwave shaping machine, an electromagnetic shaping machine, and a rolling drying and aroma-enhancing machine arranged sequentially from high to low. The microwave shaping machine, electromagnetic shaping machine, and rolling drying and aroma-enhancing machine are arranged in a Z-shape. The discharge port of the microwave shaping machine is connected to the inlet of the electromagnetic shaping machine, and the discharge port of the electromagnetic shaping machine is connected to the inlet of the rolling drying and aroma-enhancing machine. A set of hot and humid steam exhaust ports is provided at the top of the chamber.

[0010] To weigh and remove impurities from tea leaves before shaking, the feeding end of the shaking machine is equipped with a vibrating conveyor trough, which is arranged at an angle downwards. The feeding end of the vibrating conveyor trough is equipped with a feeding weighing hopper. The bottom of the vibrating conveyor trough is a screen structure. A debris collection layer is set below the vibrating conveyor trough. A glass cover is also set above the vibrating conveyor trough. A set of ion air suction fans are set at intervals on the glass cover. A dust collection bag is fitted on the ion air suction fans. A material turner is set inside the vibrating conveyor trough below the ion air suction fans. The material turner includes a material turner shaft and a set of comb-shaped material turner claws installed on the material turner shaft.

[0011] The feeding and weighing hopper includes a feeding hopper, a weighing device located at the bottom of the feeding hopper, a weighing flap at the bottom of the weighing device, a rotating shaft connected to the weighing flap, and a servo motor that drives the rotating shaft to rotate. A feeding valve is provided between the feeding hopper and the weighing device. A metal electromagnetic roller is provided inside the feeding hopper.

[0012] To facilitate automatic enzyme addition and shaking, an enzyme adder is connected to the discharge end of the vibrating conveyor trough. The enzyme adder includes a uniform hopper located below the discharge port of the vibrating conveyor trough, a uniform leaf device set inside the uniform hopper, and an ultrasonic atomizer fixed to the outside of the uniform hopper. The atomizing nozzle of the ultrasonic atomizer is aligned with the uniform hopper.

[0013] To achieve antioxidant conveying, a blower conveying device is connected to the discharge end of the blanching machine. The blower conveying device includes a feeding frame and a feeding blower rotatably mounted on the feeding frame. A tea inlet hopper is provided on the upper side of the feeding blower, which connects to the discharge port of the blanching machine. The feeding blower includes a grooved feeding wheel, and a set of partitions is evenly arranged inside the grooved feeding wheel, dividing the grooved feeding wheel into independent feeding hoppers. Both the grooved feeding wheel and the partitions adopt a perforated plate structure. An air pipe is connected to the bottom of each feeding hopper, and a shut-off valve is installed on the air pipe. The feeding blower is also equipped with an air intake plate and a nitrogen filling plate. An air compressor is connected to the air intake plate, and a nitrogen tank is connected to the nitrogen filling plate. A set of air intake branch pipes is provided on the air intake plate, and a set of nitrogen filling branch pipes is provided on the nitrogen filling plate. Each air pipe is connected to one of the air intake branch pipes and one of the nitrogen filling branch pipes, and a three-way valve is provided at the connection.

[0014] To cool the tea leaves and prevent them from oxidizing and turning red during the unpacking process, the vibrating unpacking tank is equipped with a cold air pipe that blows air into the tea leaves to cool them down.

[0015] To achieve upward feeding, the driving device includes a drive motor, an eccentric shaft driven by the drive motor, and a transmission frame. A tie rod is provided between the transmission frame and the eccentric shaft. A set of swing arms is provided on the deblocking frame, and the two ends of the swing arms are respectively connected to the transmission frame and the vibrating deblocking groove.

[0016] To improve the aroma of tea, the rolling drying and aroma-enhancing machine includes a drum, a set of elongated guide ribs on the inner wall of the drum, and an electric heating device for heating the drum. The electric heating device includes a heating tank, a finned infrared quartz electric heating tube and a circular graphene electric heating tube arranged at the bottom of the heating tank.

[0017] Furthermore, to improve the tea shaping effect, the microwave shaping machine includes a microwave shaping machine fixed frame fixedly mounted on the machine frame, a microwave shaping machine movable frame reciprocating within the microwave shaping machine fixed frame, a set of microwave shaping troughs arranged side by side on the microwave shaping machine movable frame, and a microwave heating device located on the top of the cabin and above the microwave shaping machine movable frame.

[0018] The electromagnetic basting machine includes an electromagnetic basting machine fixed frame fixedly mounted on the machine frame, an electromagnetic basting machine movable frame reciprocating within the electromagnetic basting machine fixed frame, a set of electromagnetic basting troughs arranged side by side on the electromagnetic basting machine movable frame, and an electromagnetic heating device arranged below the electromagnetic basting machine movable frame.

[0019] The microwave slicing trough is a wide trough with a width of 700mm and a depth of 80mm, while the electromagnetic slicing trough is a narrow trough with a width of 600mm and a depth of 75mm.

[0020] To improve the efficiency of kneading and facilitate the feeding of the kneading machine, multiple kneading machines are arranged side by side. An inclined vibrating discharge trough is set above the kneading machine. A set of openable discharge cover plates is set at the bottom of the vibrating conveying trough. Correspondingly, a discharge cylinder is set below the discharge cover plate. The discharge cylinder corresponds to the kneading machine. A receiving hopper is set on the side below the feeding fan on the other side of the tea inlet hopper. The discharge end of the receiving hopper is connected to the inlet end of the vibrating discharge trough.

[0021] A discharge conveyor belt is installed below the kneading machine, and the discharge port of the discharge conveyor belt is connected to the feed end of the vibrating deblocking trough.

[0022] The beneficial effects of this invention are as follows: By setting up a shaking machine and a withering and sun-drying machine before the fixing machine to shake, wither, sun-dry, and spread the tea leaves with cold air, the invention can produce the flavor of white tea. Then, the fixing machine quickly ends the fermentation and oxidation of the tea leaves. Next, a nitrogen-filled, continuous rolling and de-clumping unit is used for anti-oxidation rolling and de-clumping, which can prevent further oxidation of the tea leaves. Finally, a vertical strip-shaped high-quality tea shaping and drying unit is used for shaping and drying, resulting in a white tea with a tight, round, and straight appearance, slightly covered with white hairs, a yellow-green color, a bright golden-yellow liquor, a beer-like color, a fresh, sweet taste, a fresh tea aroma, and an elegant floral fragrance, highlighting the quality of green tea while possessing the flavor of white tea. Meanwhile, this invention, through the structural design of the withering and sun-drying machine, the vertical strip-shaped high-quality tea shaping and drying machine unit, and the design of the windmill conveying device and the vibrating deblocking conveyor, and by combining the conveying devices into a continuous production line, can greatly reduce the number of equipment, achieve multiple uses of one machine, thereby reducing the cost of equipment and the floor space required for layout, and realizing efficient continuous production and processing.

[0023] The present invention will now be described in more detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the production line of the present invention.

[0025] Figure 2 This is a schematic diagram of the structure of the vibrating conveyor, the shaking machine, and the enzyme adder in this invention.

[0026] Figure 3 This is a schematic diagram of the feeding and weighing hopper in this invention.

[0027] Figure 4 This is a top view of the material turner in this invention.

[0028] Figure 5 This is a schematic diagram of the withering, sun-drying, and spreading machine in this invention.

[0029] Figure 6This is a top view of the "five-finger" material turner in this invention.

[0030] Figure 7 This is a schematic diagram of the windmill conveying device in this invention.

[0031] Figure 8 This is a schematic diagram of the assembly of the suction disc and the nitrogen filling disc in this invention.

[0032] Figure 9 This is a schematic diagram of the structure of the nitrogen-filled, antioxidant, continuous kneading and de-blocking unit in this invention.

[0033] Figure 10 This is a top view of the vibrating conveyor trough in this invention.

[0034] Figure 11 This is a front view of the kneading machine in this invention.

[0035] Figure 12 This is a cross-sectional view of the kneading drum in this invention.

[0036] Figure 13 In this invention Figure 12 A magnified view of part A.

[0037] Figure 14 This is a front view of the vibratory deblocking conveyor in this invention.

[0038] Figure 15 This is a cross-sectional view of the vibratory deblocking conveyor in this invention.

[0039] Figure 16 This is a top view of the driving device in this invention.

[0040] Figure 17 This is a top view of the mixing and de-blocking device in this invention.

[0041] Figure 18 This is a top view of the dispersing filter in this invention.

[0042] Figure 19 This is a schematic diagram of the vertical strip-shaped high-quality tea shaping and drying machine unit of the present invention. The arrows in the diagram indicate the direction of airflow.

[0043] Figure 20 This is a perspective view of the microwave stripping machine of the present invention.

[0044] Figure 21 This is a right view of the microwave stripping machine of the present invention.

[0045] Figure 22 This is a left view of the electromagnetic stripping machine in this invention.

[0046] Figure 23 This is a top view of the feeding platform in this invention.

[0047] Figure 24 This is a top view of the impurity removal and material separation conveying platform in this invention.

[0048] Figure 25 This is a schematic diagram of the structure of the electric heating device in this invention.

[0049] Figure 26 This is a schematic diagram of the assembly of the guide vane ribs in this invention. Detailed Implementation

[0050] Examples, such as Figure 1 As shown, a continuous production line for small-canned Anji white tea is used to produce a new type of Anji white tea with a distinctive white tea flavor. The production line includes, in sequence, a weighing and impurity removal conveying device, a shaking machine 1, a withering and sun-drying machine 2, a fixing machine 3, a windmill conveying device 9, a nitrogen-filled, antioxidant, continuous kneading and de-clumping machine 4, and a vertical strip-shaped high-quality tea shaping and drying machine 5. This production line utilizes fully automated mechanical processing, resulting in high processing efficiency, a compact equipment layout, and a small footprint.

[0051] The specific structure and connection relationships of each device are described below:

[0052] like Figures 2 to 4 As shown, the weighing and impurity removal conveying device includes a vibrating conveying trough 6, a feeding weighing hopper 7, and an enzyme adder 8. The vibrating conveying trough 6 is a stainless steel trough, 1.2-1.5m long, 0.4-0.5m wide, and 0.5-0.6m deep. The bottom of the vibrating conveying trough 6 has a screen structure, preferably a 10-mesh screen. To better remove impurities and convey fresh tea leaves, the vibrating conveying trough 6 is arranged at a 7-9 degree downward inclination. A JMC-30 ratchet-type pneumatic vibrator is connected to the vibrating conveying trough 6. The JMC-30 ratchet-type pneumatic vibrator drives the trough to vibrate, using the 10-mesh screen to remove insect eggs, mud, dust, and other impurities from the fresh tea leaves. Simultaneously, the inclined vibration conveys the impurity-removed fresh tea leaves to the feeding end of the shaking machine 1. A debris collection layer 61 is provided below the vibrating conveying trough 6 to collect debris falling from the bottom of the vibrating conveying trough 6 for easy cleaning.

[0053] To further improve the impurity removal capability, a glass cover 62 is also provided above the vibrating conveyor trough 6. A set of ion air suction fans 63 are spaced apart on the glass cover 62, and dust collection bags 64 are fitted onto the ion air suction fans 63. The ion air suction fans 63 are MST-A02A type ion air suction fans, which use ion air to absorb fibers, hair, dust, and other impurities carried in the fresh tea leaves. To better remove impurities, a material turner 65 is provided below the ion air suction fans 63 inside the vibrating conveyor trough 6. The material turner 65 includes a turning shaft 651 and a set of comb-shaped turning claws 652 mounted on the turning shaft 651. Rotation of the turning shaft 651 causes the comb-shaped turning claws 652 to turn the tea leaves, raising fibers, hair, dust, and other impurities carried in the fresh tea leaves for ion air suction.

[0054] To achieve quantitative conveying, a weighing hopper 7 is provided at the feeding end of the vibrating conveyor trough 6. The weighing hopper 7 includes a stainless steel funnel-shaped feeding hopper 71 mounted on the frame 610 of the vibrating conveyor trough, a weighing device 72 located at the bottom of the feeding hopper 71, and a weighing flap 73 at the bottom of the weighing device 72. A rotating shaft 74 is connected to the weighing flap 73, and a servo motor 75 is also provided to drive the rotating shaft 74 to rotate. A feeding valve 76 is provided between the feeding hopper 71 and the weighing device 72. When the weight of the tea in the weighing device 72 meets the requirements, the feeding valve 76 closes, and the servo motor 75 drives the rotating shaft 74 to rotate, causing the weighing flap 73 to flip open. This structure can control the opening degree of the weighing flap 73 as needed, thereby controlling the feeding speed to match the conveying speed of the vibrating conveyor 6, so that the tea is evenly spread on the vibrating conveyor 6 and conveyed forward. After the material is discharged, the servo motor 75 drives the weighing flap 73 to close, and the feeding valve 76 opens to allow feeding. To remove metallic impurities, a metal electromagnetic roller 77 is also installed inside the feeding and weighing hopper 71, positioned 10-15cm inside the hopper. When fresh tea leaves are fed in, an electromagnetic field is generated, causing the roller to rotate and attract magnetic metallic impurities carried in the tea leaves. This feeding and weighing hopper is characterized by requiring only one hopper to integrate fresh tea leaf feeding, weighing, and removal of metallic impurities, significantly improving equipment utilization and reducing workshop space requirements.

[0055] To achieve automatic enzyme addition before shaking, an enzyme adder 8 is connected to the discharge end of the vibrating conveyor trough 6 to quantitatively add enzymes and mix the weighed tea leaves. The enzyme adder 8 includes a uniform hopper 81 located below the discharge port of the vibrating conveyor trough 6, a leaf uniformr 82 disposed within the uniform hopper 81, and an ultrasonic atomizer 83 fixed to the outside of the uniform hopper 81. The atomizing nozzle of the ultrasonic atomizer 83 is aligned with the uniform hopper 81. The leaf uniformr 82 has a fan-shaped structure, which slowly rotates to agitate the tea leaves and fully mix them with the enzyme solution sprayed from the atomizing nozzle. After the tea leaves and enzyme solution are fully mixed, they fall into the shaking cage for enzyme addition and shaking to carry out the enzymatic hydrolysis reaction of the enzyme. A conveying pipe extending into the shaking machine 1 is provided at the bottom of the uniform hopper 81 to send the enzyme-added and mixed tea leaves into the shaking machine 1 for shaking.

[0056] like Figure 2 As shown, the shaking machine 1 has a double-layer structure, including a stainless steel outer shell 101 and a bamboo shaking cage 102 fitted inside the stainless steel outer shell 101. It also includes a transmission device and a control device, allowing for intelligent shaking by automatically setting the shaking speed and shaking time. The bamboo shaking cage 102 has a set of axially arranged protruding ribs 103, and the stainless steel outer shell 101 has evenly distributed ventilation slots. The stainless steel outer shell 101 increases the strength of the shaking cage, enabling it to withstand greater tea weight and ensuring the cage's durability. Simultaneously, the protruding ribs 103 on the inner wall of the bamboo shaking cage 102 rub against the edges of the buds and leaves, causing damage to the leaf edge cells, promoting the release of grassy aromas and the development of floral fragrances. This also facilitates the entry of exogenous enzymes into the inner layer of the buds and leaves for enzymatic reactions, enhancing the aroma of the tea.

[0057] An inclined conveyor belt 10, tilted upwards at an 8-10 degree, is installed between the discharge port of the shaking machine 1 and the inlet at the top of the withering and sun-drying machine 2. This inclined conveyor belt 10 is made of stainless steel, is 3-4 meters long, and 50-60 cm wide. The conveyor screen is an 8-mesh stainless steel screen, used to further remove residual tea dust, dirt, and other impurities. To achieve continuous and quantitative conveying of buds and leaves, a speed controller is used to programmatically control the conveying speed. Furthermore, to prevent tea leaves from falling during incline conveying, plastic baffles, 8-10 cm high, are installed at 20-25 cm intervals along the conveyor belt to prevent tea leaves from falling and ensure stable conveying.

[0058] The benefits of equipping this production line with a weighing and impurity removal conveying device and a shaking machine are as follows: The friction of the inner wall of the bamboo shaking cage damages the leaf edge cells, promoting the release of grassy aroma and the emergence of floral fragrance. This also encourages exogenous pyrolytic enzymes to enter the inner layer of the buds and leaves for enzymatic hydrolysis, enhancing the sweet floral aroma, increasing the fresh and refreshing taste of the tea soup, and maintaining the high amino acid content of the small-canned Anji white tea. Furthermore, the combined action of electromagnetic rollers, vibrating screens, and ion air suction machines removes insect eggs, mud, dust, fibers, hair, and other impurities from the fresh tea leaves. The cleaned, enzyme-added, shaken buds and leaves are then quantitatively fed into a continuous withering multi-color simulated sun-drying machine.

[0059] like Figures 5 to 6 As shown, the withering, sun-drying and spreading machine 2 has a three-layer structure, including a withering frame 21, a hot air withering trough 22 set on the upper layer of the withering frame 21, a light sun-drying layer 23 set on the middle layer, and a cold air spreading layer 24 set on the lower layer. The tea leaves pass through the hot air withering trough 22, the light sun-drying layer 23 and the cold air spreading layer 24 in sequence to complete hot air withering, light sun-drying and cold air spreading.

[0060] The hot air withering trough 22 has a depth of 0.5m and a withering conveyor belt 221 at the bottom. The withering conveyor belt 221 rotates clockwise. A feed hopper is located on the upper left side of the hot air withering trough 22. The outlet of the feed hopper is a flat opening adapted to the width of the withering conveyor belt 221, and a toothed feeder is installed inside the feed hopper to facilitate the even spreading of buds and leaves on the withering conveyor belt 221. A discharge vibrating screen 227 is connected below the discharge end of the withering conveyor belt 221. The discharge vibrating screen 227 has a 9-mesh screen structure, a length of 0.6m, a width of 20-25cm, and is arranged at an inclination of 6-8 degrees to remove broken and charred tea leaves produced during hot air withering.

[0061] To prevent mutual interference between withering, sun-drying, and spreading, partitions 25 are installed between the hot air withering trough 22, the sun-drying layer 23, and the cold air spreading layer 24. Each partition 25 has a discharge hole 26, and a flat discharge pipe 27 is installed within the discharge hole 26. A conveying trough hopper 28, which connects to the upper tea outlet, is installed on the flat discharge pipe 27. A toothed uniform feeder is also installed inside the conveying trough hopper 28. A conveying trough hopper 28 is located below the discharge port of the discharge vibrating screen 227.

[0062] The sun-drying layer 23 is equipped with a counter-clockwise rotating sun-drying conveyor belt 231, and the cold-air spreading layer 24 is equipped with a clockwise rotating spreading conveyor belt 241. A feeding trough hopper 28 and a flat discharge pipe 27 are located below the discharge end of the sun-drying conveyor belt 231 to feed the tea leaves onto the spreading conveyor belt 241 below. The withering conveyor belt 221, sun-drying conveyor belt 231, and spreading conveyor belt 241 are all 20-mesh stainless steel screen conveyor belts. To ensure the uniformity of the tea leaves, a "five-finger" turning device 228 is installed above each of the withering conveyor belt 221, sun-drying conveyor belt 231, and spreading conveyor belt 241. The "five-finger" turning device 228 consists of a rotating shaft and "five-finger" turning claws. The rotating shaft is equal in length to the width of the conveyor belt and is arranged laterally in the trough at 2-meter intervals. There are three "five-finger turning claws" installed on the rotating shaft at 35cm intervals. The rotating shaft rotates clockwise or counterclockwise, which drives the "five-finger turning claws" to imitate the human hand turning the buds and leaves in the trough, so that the buds and leaves are evenly withered, dried and spread.

[0063] The hot air withering trough 22 has a funnel-shaped hot air outlet 222 at its feed end, which is embedded in the front end of the trough. A heating chamber 224 is connected to the funnel-shaped hot air outlet 222, and a first blower 223 is connected to the heating chamber 224. To improve temperature uniformity, a hot air exchange chamber 225 is also provided between the heating chamber 224 and the funnel-shaped hot air outlet 222. The heating chamber 224 is a channel-shaped cast iron structure, and a set of electric heating plates generates electric heat inside. The first blower 223 is a DF-3B centrifugal blower, installed at the rear end of the heating chamber 224. The first blower 223 blows hot air at 35-55℃ at a volume of 100-150 m³ / min through a hot air pipe into the hot air exchange chamber 225. After neutralization and conversion in the hot air exchange chamber 225, the air is then blown into the hot air withering trough 22. The hot air conversion chamber 225 is a spherical structure made of stainless steel. Its function is to convert the hot air blown by the first blower 223 into hot air of uniform temperature through rotation and neutralization within the hot air conversion chamber 225, and then blow it into the hot air withering trough 22 to wither the buds and leaves. This process promotes the dehydration and withering of the fresh tea leaves, and activates the activity of various biological enzymes, which then undergo enzymatic reactions with the contained tea polyphenols, amino acids, caffeine, chlorophyll, polysaccharides, and other biochemical substances. The trumpet-shaped hot air outlet 222 is also equipped with a 6-mesh screen baffle 226 to ensure that the hot air is evenly blown into the hot air withering trough 22.

[0064] The top of the sun-drying layer 23 is equipped with six variable-color LED lights 232, which emit red, white, and orange light. The lights are spaced 1.5 meters apart. Each LED light has a rectangular frame with a blast-proof glass bottom. A color sensor connected to a spectral control platform converter is located on the frame. The platform allows for the conversion of light into red, white, and orange, mimicking natural sunlight for sun-drying the tea leaves. The top of the sun-drying layer 23 also features an atomizer 233, a DRS-09A ultrasonic atomizer. This atomizer uses high-frequency vibrations to convert water into a mist, simulating natural fog. The atomizer 233 is connected to two ultrasonic mist nozzles 2331, which are spaced 50-60cm apart and installed at the feed inlet of the sun-drying layer 23. The nozzles spray water mist into the sun-drying layer 23 to block the light, thereby forming a cloud-like diffused light to irradiate the buds and leaves. This not only overcomes the technical obstacle of traditional sunlight irradiation that easily scorches tender buds and leaves, but also promotes the efficient enzymatic hydrolysis reaction of added exogenous enzymes and tea polyphenol oxidase.

[0065] The cold air spreading layer 24 has a funnel-shaped cold air outlet 242 at its feed end, which is embedded in the front end of the cold air spreading layer 24. A cold air conversion chamber 243 is connected to the funnel-shaped cold air outlet 242. A refrigeration unit 245 and a second blower 244 are sequentially connected to the cold air conversion chamber 243 via pipes. The refrigeration unit 245 is an AMS-10AD type circulating low-temperature refrigeration unit, capable of producing cold air at 12-18℃. The generated cold air is neutralized and converted by the cold air conversion chamber 243 before being blown into the cold air spreading layer 24. The cold air conversion chamber 243 is also a spherical structure made of stainless steel. Its function is to convert the cold air blown by the second blower 244 into cold air of a uniform temperature through rotation and neutralization within the cold air conversion chamber 243. It can convert cold air with a blowing volume of 80-100 cubic meters / min into cold air of ≥15℃, and then blow it into the cold air spreading layer 24 through the air outlet to spread the buds and leaves with cold air, dissipate the humid heat, lower the leaf temperature, and make the leaf texture soft. The trumpet-shaped cold air outlet 242 is also equipped with a 6-mesh screen baffle 226 to ensure that the cold air is blown evenly into the cold air spreading layer 24.

[0066] A temperature and humidity sensor 229 is installed in the middle of the hot air withering trough 22, the sun-drying layer 23 and the cold air spreading layer 24. The sensor is an RS485 high-precision temperature and humidity sensor. The temperature sensor 229 is connected to the PLC control system to transmit the detected temperature and humidity signals to the PLC control system so as to control the temperature and humidity of withering, sun-drying and spreading in a timely manner.

[0067] The advantages of equipping this production line with the withering, sun-drying, and spreading machine 2 are that it integrates the hot air withering, sun-drying, and cold air spreading processes of tea leaves into a single tank. This achieves the integration and continuity of the withering, sun-drying, and spreading tea-making processes, while also solving the problems of existing similar tea-making machinery, such as single-function operation, large workshop space occupation, high energy consumption, and high production costs. It employs a color-changing multi-light source device and an ultrasonic atomizer, allowing for the setting of three light colors: red, white, and orange, to simulate natural light for sun-drying fresh tea leaves. This meets the different light color requirements of sun-drying operations. Furthermore, it can utilize drifting water mist to simulate diffused light in the early morning and evening for sun-drying. In particular, it overcomes the technical obstacle of traditional sun-drying, which easily scorches tender buds and leaves and cannot be carried out in all weather conditions.

[0068] The outlet of the cold air spreading layer 24 is connected to the drum feed port of the fixing machine 3 via a Z-type conveyor belt 11 for continuous fixing, and the fixed buds and leaves are transported from the drum outlet to the tea feed hopper 93 of the windmill conveyor device 9 via an elevator.

[0069] The aforementioned fixing machine 3 is a 6CST-60-ZF type drum-type electric heating and hot air tea fixing machine. This fixing machine is characterized by utilizing the "dual heat energy" of electric heating and hot air to fix the buds and leaves after enzyme-added sun-drying and spreading, which can quickly kill the activity of tea polyphenol oxidase, end the oxidation and reddening reaction, and preserve the quality and flavor of white tea.

[0070] like Figures 7 to 8 As shown, the windmill conveying device 9 includes a feeding frame 91, a feeding windmill 92 rotatably mounted on the feeding frame 91, a tea inlet hopper 93 located on the left side of the feeding windmill 92, and a tea receiving hopper 95 located on the lower right side of the feeding windmill 92. The feeding windmill 92 includes a rotating shaft 924 located in the middle and a grooved conveying wheel 921 located at the outermost edge, and a set of connecting support rods 925 for connecting the rotating shaft 924 and the grooved conveying wheel 921. A set of partitions 922 are evenly arranged inside the grooved conveying wheel 921, dividing the grooved conveying wheel 921 into a series of independent conveying hoppers 923. Tea leaves are placed in the conveying hoppers 923 and conveyed forward with the rotation of the feeding windmill 92. To facilitate heat dissipation of the tea leaves within the conveying hopper 923 during transport, both the grooved conveying wheel 921 and the partition plate 922 employ a perforated plate structure. This allows natural airflow generated during rotational conveying to be blown into the conveying hopper 923 to cool the tea leaves. This feeding fan structure can be arranged within a limited space, extending the feeding distance and time, thus providing favorable conditions for continuous feeding, reducing the number of equipment start-ups and shutdowns, and improving the equipment's service life.

[0071] To facilitate feeding and discharging, the tea inlet hopper 93 is located to the side and above the feeding fan 92. A downward-sloping tea outlet 94 is located at the bottom of the tea inlet hopper 93. The outlet of the tea outlet 94 is located to the side and above the feeding fan 92 and aligned with the conveyor hopper 923, thus accurately feeding the tea leaves into the conveyor hopper 923 and conveying them forward. The receiving hopper 95 is located to the side and below the feeding fan 92. When the conveyor hopper 923 rotates to the lower right, the opening of the conveyor hopper 923 gradually faces downward, allowing the tea leaves to immediately fall from the conveyor hopper 923 into the receiving hopper 95 below.

[0072] To meet the requirement of quantitative output, an electronic weighing device 96 is installed at the bottom of the tea inlet hopper 93. The electronic weighing device 96 has a cylindrical structure, with a feeding valve 961 above it and a weighing base plate 962 at its bottom. The weighing base plate 962 is connected to a tilting shaft 963. In the initial state, the weighing base plate 962 is placed horizontally, blocking the inlet of the tea outlet hopper 94, and the feeding valve 961 is open. When the weighing base plate 962 detects that the tea has reached the required weight, the feeding valve 961 closes, and the weighing base plate 962 tilts to an inclined angle to connect with the tea outlet hopper 94. The tea slides into the tea outlet hopper 94 and enters the conveying hopper 923 along the tea outlet hopper 94. When feeding into the conveying hopper 923, the machine can be stopped to feed, or the output of tea from the tea outlet hopper 94 per unit time and the rotation speed of the feeding fan 92 can be adjusted to achieve feeding during operation, while the feeding fan 92 continues to rotate. The tilting shaft 963 of the weighing base plate 962 can be driven by a motor or pushed and pulled by a cylinder to tilt the shaft 963.

[0073] To facilitate nitrogen purging and anti-oxidation of the tea leaves in the feeding hopper 923 during the initial feeding stage, and to prevent the tea leaves from slipping out when the feeding hopper 923 rotates to an downward tilting position until it reaches the designated position, each feeding hopper 923 is equipped with an air pipe 97 connected to its bottom. A conical cover 926 is provided at the bottom of the feeding hopper 923, and the air pipe 97 is connected to the bottom of the cover 926. A shut-off valve 971 is provided on the air pipe 97 to control the opening and closing of the air passage. The feeding blower 92 is also equipped with an air suction plate 98 and a nitrogen filling plate 99, preferably mounted on a rotating shaft 924. An air compressor 910 is connected to the air suction plate 98 for air extraction, and a nitrogen tank 911 is connected to the nitrogen filling plate 99. The suction plate 98 is equipped with a set of suction branch pipes 981, and the nitrogen filling plate 99 is equipped with a set of nitrogen filling branch pipes 991. Each air pipe 97 is connected to one of the suction branch pipes 981 and the nitrogen filling branch pipe 991, and a three-way valve 912 is provided at the connection. When nitrogen filling is required, the three-way valve 912 controls the nitrogen filling branch pipe 991 to connect with the air pipe 97, and fills the corresponding conveying hopper 923 with nitrogen for anti-oxidation. When the conveying hopper 923 rotates to the point where the opening is tilted downwards and the tea leaves may spill, the three-way valve 912 controls the suction branch pipe 981 to connect with the air pipe 97, and evacuates the bottom of the conveying hopper 923, so that the tea leaves adhere to the inside of the conveying hopper 923 and continue to be conveyed downwards. When it reaches directly above the receiving hopper 95, the shut-off valve 971 is automatically closed by the sensing device, and the tea leaves fall into the receiving hopper 95 below under their own gravity.

[0074] It is also equipped with a PLC control system, which controls the rotation of the feeding fan 92 and the opening and closing of the shut-off valve 971 and the three-way valve 912. At the same time, it controls the opening and closing of the feeding valve on the tea hopper and the flipping of the weighing base plate.

[0075] like Figures 9 to 18As shown, the nitrogen-filled, antioxidant, continuous kneading and de-caking unit 4 includes a set of kneading machines 41 and a vibrating de-caking conveyor 42 connected to the discharge port of the kneading machines 41. Five kneading machines 41 are arranged side-by-side to form a kneading unit. Above the kneading unit is a downwardly oriented vibrating discharge trough 44, on which a vibrator is fixedly installed. The vibrator drives the vibrating discharge trough 44 to vibrate, causing the tea leaves to slide down the inclined bottom of the trough and move forward. To facilitate control of the tea leaves entering the corresponding kneading machines 41 within the vibrating discharge trough 44, a set of openable discharge covers 441 are provided at the bottom of the vibrating discharge trough 44. Correspondingly, a discharge cylinder 442 is provided below the discharge covers 441, with each discharge cylinder 442 corresponding to a kneading machine 41. A hoist is installed between the receiving hopper 95 of the feeding fan 9 and the vibrating discharge trough 44 to feed the vibrating discharge trough 44. When the corresponding kneading machine 41 needs to be fed, the upper discharge cover 441 opens, and the tea leaves slide from the discharge cylinder 442 into the kneading drum after reaching the opened discharge cover 441. To ensure that all the tea leaves fall from the discharge cover 441, the width of the discharge cover 441 is adapted to the width of the bottom of the vibrating discharge trough 44.

[0076] To achieve nitrogen-filled, antioxidant kneading, the kneading machine 41 includes a kneading frame 410, a kneading disc 411 mounted on the kneading frame 410, a kneading drum 412, and a drum lid 413 mounted on the kneading drum 412. The kneading disc 411 is disc-shaped, made of teak, with a diameter of 65cm and an 8-10cm rim. A set of ribs 4111 are provided on the kneading disc 411 to allow the buds and leaves to be kneaded by turning them up, down, left, and right. The advantage of using teak for the kneading disc 411 is that it has high density and hardness, good stability, a fragrant aroma of glutinous rice, and corrosion resistance, making it easy to knead the buds and leaves into "fine, curved strips" while retaining the aroma of glutinous rice. The ribs 4111, numbering 13-15, are made of bamboo, with a height of 3-5cm and a width of 1.8-2.1cm. The rib 4111 is a curved strip structure arranged along the radial direction. As the kneading drum rotates, the buds and leaves curl into strips under the kneading pressure of the kneading disc 411 and the rib 4111. The advantage of using bamboo rib 4111 for kneading buds and leaves is that the kneading pressure is lighter, reducing breakage by about 10%. The kneading disc 411 has a tea outlet, which is circular with a diameter of 28-30cm and located in the center of the kneading disc. The tea outlet is also equipped with a door made of stainless steel, which is controlled by a steam pressure device to close when kneading the tea leaves and open when discharging the tea.

[0077] The kneading drum 412 is 80cm high and 45cm in diameter, and is arranged on the kneading disc 411. To avoid adverse reactions between nitrogen and metal materials, the kneading drum 41 is made of cedar wood to facilitate the kneading of natural materials. In addition, a 5-6cm high flexible plastic skirt 419 is added to the lower part of the kneading drum 412 to prevent nitrogen from leaking out of the kneading drum 412 when it rotates.

[0078] The kneading drum 412 is equipped with a pressure drum lid 413 for pressing down the tea leaves during kneading. To inject nitrogen into the kneading drum 412 during kneading to prevent oxidation of the tea leaves, the lid 413 includes a bottom pressure plate 4131 and an upper sealing plate 4132. A nitrogen-filling chamber 4133 is provided between the bottom pressure plate 4131 and the upper sealing plate 4132. Both the bottom pressure plate 4131 and the upper sealing plate 4132 are made of high-strength stainless steel, and a layer of cedar wood is laid on the bottom surface of the bottom pressure plate 4131. A nitrogen-filling inlet valve 414 is provided on the upper sealing plate 4132, through which high-pressure nitrogen is injected into the nitrogen-filling chamber 4133. A vent valve 415 is located at the center of the bottom pressure plate 4131. A nitrogen filling pipe 416, extending into the kneading drum 412, is connected to the vent valve 415. Nitrogen outlet holes 4161 are evenly distributed on the wall of the nitrogen filling pipe 416. The bottom of the nitrogen filling pipe 416 is sealed, and nitrogen is sprayed outwards through the nitrogen outlet holes 4161 to quickly fill the kneading drum 412 with nitrogen and repeatedly contact the tea leaves. To prevent tea leaves from blocking the nitrogen outlet holes 4161 or entering the nitrogen filling pipe 416 through the nitrogen outlet holes 4161 and affecting nitrogen filling, a protective cover 417 with a 100-mesh mesh structure is also provided on the outside of the nitrogen filling pipe 416. The upper part of the protective cover 417 is rotatably mounted on the nitrogen filling pipe 416 via a rotating bearing 418. When kneading, the protective cover 417 can rotate relative to the tea leaves when squeezed, thereby reducing the friction between the protective cover and the tea leaves and preventing the tea leaves from being damaged or falling into the protective cover 417 through the mesh. The protective cover 417 has a detachable structure, making it easy to remove for regular cleaning and replacement.

[0079] The machine is also equipped with a programmable control device, which is a PLC control system. It can automatically set the kneading pressure, kneading time, kneading speed of the tea kneading barrel, and the opening and closing of the air outlet valve 415, and control the nitrogen filling time to carry out intelligent nitrogen filling and anti-oxidation kneading.

[0080] Below the kneading unit is a discharge conveyor belt 46, and the discharge port of the discharge conveyor belt 46 is connected to the feed end of the vibrating deblocking trough 421 on the vibrating deblocking conveyor 42.

[0081] To achieve conveying and low-temperature de-caking, and to ensure the processing quality of tea, the vibrating de-caking conveyor 42 includes a de-caking frame 4210 and a vibrating de-caking trough 421 installed on the de-caking frame 4210 and connected to the discharge port of the kneading machine. Both the de-caking frame 4210 and the vibrating de-caking trough 421 are arranged inclined upwards at an angle of 3-5°. A drive device 423 is also provided to drive the movement of the vibrating de-caking trough 421. The drive device 423 drives the movement of the vibrating de-caking trough 421, thereby causing the tea leaves on the vibrating de-caking trough 421 to be conveyed inclined upwards to the inlet of the vertical strip-shaped premium tea shaping and drying machine unit 5.

[0082] To prevent the broken tea leaves from sliding downwards during the movement, the bottom of the vibrating de-clumping trough 421 is provided with continuous corrugated grooves 422. The vibrating de-clumping trough 421 is made of stainless steel, 8-9m long, 1.4m wide, and 45cm deep. The bottom of the trough is a 25-mesh stainless steel screen. The lower rear part of the trough is closed to prevent the broken buds and leaves from falling, while the upper front part is an open tea outlet to allow the broken buds to be output. The vibrating de-clumping trough 421 simultaneously de-clumps and removes broken tea dust while conveying the tea upwards. To facilitate the removal of the sieved broken tea dust, a dust collection layer 429 is provided below the vibrating de-clumping trough 421. The inclination angle of the dust collection layer 429 is greater than that of the vibrating de-clumping trough 421, preferably 5-7 degrees downward. A movable door 4291 is provided near the tea inlet end of the dust collection layer 429, i.e., at the lower rear, for easy access to remove tea dust.

[0083] The drive device 423 includes a drive motor 4231 mounted on a block-breaking frame 4210 and an eccentric shaft 4232 rotatably mounted on the block-breaking frame 4210. The eccentric shaft 4232 is fixed to a support plate 42101 on the frame via a bearing 42322. The drive motor 4231 and the eccentric shaft 4232 are connected by a belt drive. The rotation of the drive motor 4231 drives the eccentric shaft 4232 to rotate. A transmission frame 4233 is provided below the disassembly frame 4210. A drive rod 42331 is horizontally arranged between the transmission frames. A tie rod 4234 is provided between the drive rod 42331 and the eccentric shaft 4232. A first rotating sleeve 42321 is provided on the eccentric shaft 4232, and a second rotating sleeve 423311 is provided on the drive rod 42331. The two ends of the tie rod 4234 are respectively fixed to the first rotating sleeve 42321 and the second rotating sleeve 423311. The drive motor 4231 drives the eccentric shaft 4232 to rotate via a belt. The eccentric shaft 4232 drives the drive rod 42331 to move back and forth via the tie rod 4234, thereby driving the transmission frame 4233 to move back and forth. To reduce friction, the first rotating sleeve 42321 and the second rotating sleeve 423311 are preferably bearing sleeves. A set of swing arms 4235 are respectively arranged on both sides of the deblocking frame 4210. The middle position of the swing arms 4235 is rotatably mounted on the deblocking frame 4210 via a rotating pin, so that the swing arms 4235 can swing around the rotating pin on the deblocking frame 4210. The two ends of the swing arms 4235 are rotatably connected to the transmission frame 4233 and the vibrating deblocking groove 421 respectively via connecting shafts, and the connection point between the swing arms 4235 and the vibrating deblocking groove 421 is located behind the connection point between the swing arms 4235 and the transmission frame 4233.

[0084] To break up large tea clumps conveyed upwards, a set of turning and breaking devices 425 are spaced apart within the vibrating de-clumping trough 421. Each turning and breaking device 425 includes a turning shaft 4251 rotatably mounted within the vibrating de-clumping trough 421 and a turning plate 4252 mounted on the turning shaft 4251. The turning plate 4252 has serrated turning teeth 4253, which are in clearance fit with the bottom of the vibrating de-clumping trough 421. The counterclockwise rotation of the turning shaft 4251 drives the turning teeth 4253 to turn the tea leaves on the vibrating de-clumping trough 421, thus breaking up the tea clumps in conjunction with the movement of the vibrating de-clumping trough 421. To prevent the serrated turning devices from breaking up the tea leaves during turning, the turning teeth 4253 are coated with a layer of rubber to gently turn and break up the tea clumps.

[0085] A dispersing filter 424 is also provided below the rear of the stirring and dispersing device 425. The dispersing filter 424 includes a filter mounting rod 4241 placed horizontally in the vibrating dispersing groove 421, and a row of filter combs 4242 fixed on the filter mounting rod 4241 for catching the tea clumps rolling down from above. A gap is reserved between the front end of the filter combs 4242 and the bottom of the vibrating dispersing groove 421 for the tea leaves to move upward after being dispersed. The filter combs 4242 are arranged horizontally, and a cold air pipe 426 is provided above the filter combs 4242 to blow cold air towards the filter combs 4242, thereby assisting in dispersing the tea clumps and cooling the tea leaves at the same time.

[0086] The specific installation structure of the cold air duct 426 is as follows: a main ventilation duct 427 is provided on one side of the vibratory de-bulking tank 421. A cold air fan 428 is provided at one end of the main ventilation duct 427 where the material is fed into the vibratory de-bulking tank 421, and the other end is closed. The cold air duct 426 is closed at one end and connected to the main ventilation duct 427 at the other end, and is arranged horizontally on the vibratory de-bulking tank 421. An air outlet 4261 is provided on the cold air duct 426 to blow air towards the filter comb 4242. The cold air fan 428 is a YDM-P40Y type cold air fan, which can be set to blow cold air at 4-6℃ for de-bulking. The machine is also equipped with a control device, which can set the blowing volume of cold air for intelligent cold air de-bulking.

[0087] The advantages of configuring the nitrogen-filled antioxidant continuous kneading and de-clumping unit 4 in this production line are: (1) The windmill rotation quantitative conveying changes the linear conveying mode of the current conveying device. It can not only orderly convey and knead the buds and leaves of the continuous kneading unit in a quantitative manner, but also the equipment structure is simple, occupies less space, and saves energy and reduces consumption. (2) Nitrogen-filled antioxidant kneading and cold air vibration solve some technical deficiencies of the existing kneading and de-clumping machine. It can make the cell breakage rate and strip formation rate of buds and leaves more consistent, the bud breakage rate is low, and inhibit the oxidation reaction of polyphenol oxidase and other biological oxidases. It can reduce the loss of high amino acid content in Anji white tea and ensure its unique quality and flavor.

[0088] The discharge end of the vibrating deblocking conveyor 42 is connected to the inlet end of the vertical strip-shaped premium tea shaping and drying machine unit 5 via a horizontal conveyor belt 12. For example... Figures 19 to 26As shown, the vertical strip-shaped premium tea shaping and drying machine unit 5 includes a closed chamber 51 and a frame 52 installed inside the chamber 51. The frame 52 is equipped with a microwave shaping machine 53, an electromagnetic shaping machine 54, and a rolling drying and aroma-enhancing machine 55 arranged sequentially from high to low. The microwave shaping machine 53, the electromagnetic shaping machine 54, and the rolling drying and aroma-enhancing machine 55 are arranged in a Z-shape. The discharge port of the microwave shaping machine 53 is connected to the inlet of the electromagnetic shaping machine 54, and the discharge port of the electromagnetic shaping machine 54 is connected to the inlet of the rolling drying and aroma-enhancing machine 55. The tea leaves pass through the microwave shaping machine 53, the electromagnetic shaping machine 54, and the rolling drying and aroma-enhancing machine 55 in sequence to complete the shaping, drying, and aroma-enhancing processes.

[0089] The cabin 51 is constructed entirely of titanium steel composite material and insulated with a layer of thermal insulation. Cabinet doors 5102 are located at both ends of the cabin 51 for easy access and maintenance. An observation window 5103, sealed with transparent plexiglass, is provided on one side of the cabin 51 to facilitate monitoring of the tea-making process. To promptly remove moisture from the cabin 51, a set of humid heat exhaust outlets 5101 are spaced at intervals on the top of the cabin 51. The number of outlets can be adjusted according to actual needs, with a preferred circular pipe structure for easy connection to pipelines. To improve heat energy utilization, the humid heat exhaust outlets 5101 are connected to a dehumidifier 59 via pipelines. The exhaust pipe of the dehumidifier 59 is connected to the interior of the cabin 51, and an air inlet is located in the lower middle part of the cabin 51 to connect with the exhaust pipe of the dehumidifier 59. The dehumidifier 59 dehumidifies the hot and humid air and then sends the hot air back into the cabin 51, raising the temperature of the entire cabin 51, improving energy utilization, and reducing energy consumption.

[0090] The microwave tea-stripping machine 53 includes a fixed frame 531 mounted on a frame 52, and a movable frame 532 reciprocating within the fixed frame 531. A set of microwave tea-stripping troughs 533 are arranged side-by-side on the movable frame 532. Each microwave tea-stripping trough 533 is a wide trough with a width of 700mm, a depth of 80mm, and a length of 1000mm. Preferably, 16 microwave tea-stripping troughs 533 are arranged side-by-side, with the inlet end higher than the outlet end, and are tilted on the movable frame 532. This allows the tea leaves to be conveyed forward while reciprocating within the microwave tea-stripping troughs 533, completing the initial tea-stripping process.

[0091] The microwave shaping pan 533 is made of aluminum alloy. Three microwave heating devices 534 are spaced apart on the top of the chamber 51, above the movable frame 532 of the microwave shaping machine. Each microwave heating device 534 is a box structure 40cm long, 25cm wide, and 15cm high. A microwave generator is installed inside the box to emit microwave heat energy to the microwave shaping machine 53 for microwave shaping of the tea leaves. The microwave generator consists of a magnetron, a power transformer, and a high-voltage capacitor. To improve thermal efficiency, the magnetron, power transformer, and high-voltage capacitor are arranged in two layers inside the microwave heating box. The magnetron converts electrical energy into microwave energy and emits microwaves with a vibration frequency of 2.45 billion times per second, penetrating to the inner layer of the tea leaves to dry moisture and shape them into strips. Simultaneously, the microwave radiation reflected from the aluminum alloy pan also dries moisture and shapes the tea leaves. This combined effect of dual microwave heat energy helps to curl loose buds and leaves into strips, resulting in a shaping effect superior to other heat energy sources.

[0092] The benefits of using microwave radiation heat energy and a wide-groove aluminum alloy pot for tea leaf shaping: The rapid penetration and reflective penetration heating methods of microwaves not only minimize the damage and loss of nutrients and health-promoting substances in the tea leaves, but also ensure uniform heating, preventing the undesirable phenomenon of burnt exterior and undercooked interior. In particular, the reciprocating motion of the wide-groove pot helps to shape the buds and leaves into curled strips.

[0093] The driving mechanism of the movable frame 532 of the microwave striper includes a drive motor 535 and a rotating shaft 536 driven by the drive motor 535. Rotating cams 537 are provided at both ends of the rotating shaft 536. A pull rod 538 is provided between the rotating cam 537 and the side of the movable frame 532 of the microwave striper. One end of the pull rod 538 is connected to the movable frame 532 of the microwave striper through a pin, and the other end is eccentrically mounted on the rotating cam 537 through a pin. The rotation of the rotating cam 537 drives the pull rod 538 to pull back and forth.

[0094] To achieve automatic feeding, an inclined feeding platform 56 is fixedly installed on the movable frame 532 of the microwave tea-making machine and at the feeding end of the microwave tea-making trough 533. The feeding platform 56 swings together with the movable frame 532 of the microwave tea-making machine. A feeding conveyor belt 57 is also provided. The feeding conveyor belt 57 is inclined upward at an angle of 12-15° to deliver the tea into the feeding platform 56. To ensure that the tea is evenly distributed into each microwave tea-making trough 533, a first comb-shaped filter 541 adapted to the microwave tea-making trough 533 is provided at the discharge end of the feeding platform 56. The first comb-shaped filter 541 divides the discharge end of the feeding platform 56 into multiple discharge ports, the number of which is adapted to the number of microwave tea-making troughs 533 in the microwave tea-making machine 53. Meanwhile, the feeding platform 56 is also equipped with a first V-shaped material distribution baffle 562 with its opening facing the discharge end. Under the guidance of the first V-shaped material distribution baffle 562, the tea leaves are dispersed to both sides, thereby effectively preventing the tea leaves from piling up in the middle. The cross-section of the first V-shaped material distribution baffle 562 is also a V-shaped structure, and its slope can be designed and adjusted according to actual conditions.

[0095] To facilitate the connection between the microwave layering machine 53 and the electromagnetic layering machine 54, an inclined impurity removal and material distribution conveying platform 58 is provided on the movable frame 532 of the microwave layering machine and at the discharge end of the microwave layering trough 533. The impurity removal and material distribution conveying platform 58 swings together with the movable frame 532 of the microwave layering machine. The impurity removal and material distribution conveying platform 58 has a 20-mesh stainless steel screen structure and a dust receiving layer 83 is provided on the impurity removal and material distribution conveying platform 58 to receive the screened dust. A second comb-shaped filter 581 adapted to the electromagnetic layering trough 543 is provided at the discharge end of the impurity removal and material distribution conveying platform 58, and a second V-shaped material leveling baffle 582 with its opening facing the discharge direction is also provided on the impurity removal and material distribution conveying platform 58. The structure and function of the second V-shaped uniform material baffle 582 are the same as those of the first V-shaped uniform material baffle 562, so that the tea leaves are fed into the electromagnetic tea-forming trough pot 543 more evenly; the structure and function of the second comb-shaped filter 581 are the same as those of the first comb-shaped filter 561.

[0096] The electromagnetic tea-scraping machine 54 includes an electromagnetic tea-scraping machine fixed frame 541 fixedly mounted on a frame 52, and an electromagnetic tea-scraping machine movable frame 542 reciprocating within the fixed frame 541. The drive mechanism of the movable frame 542 is the same as that of the microwave tea-scraping machine movable frame 532. A set of electromagnetic tea-scraping troughs 543 are arranged side-by-side on the movable frame 542. Each electromagnetic tea-scraping trough 543 is a narrow trough with a width of 600mm, a depth of 75mm, and a length of 1000mm, made of cast iron. Preferably, 12 electromagnetic tea-scraping troughs 543 are arranged side-by-side, with the feed end higher than the discharge end, and are tilted at 5-6° on the movable frame 542. This allows the tea leaves to be conveyed forward while reciprocating within the electromagnetic tea-scraping troughs 543, performing secondary tea-scraping to make the tea leaves more compact.

[0097] An electromagnetic heating device 544 is installed below the movable frame 542 of the electromagnetic tea-scraping machine. The electromagnetic heating device 544 includes a U-shaped tray 5441 and electromagnetic heating coils 5442 spaced apart within the U-shaped tray 5441. An electromagnetic generator 5443 is connected to the electromagnetic heating coils 5442. The U-shaped tray 5441 is made of cast iron, 3.1m long, 1.1m wide, and 3-5mm thick. The function of the U-shaped tray 5441 is to provide electromagnetic heat energy to the reciprocating tea-scraping machine by laying the electromagnetic heating coils 5442 on it. Furthermore, the U-shaped tray 5441 encloses the electromagnetic tea-scraping machine 54, preventing electromagnetic radiation from spreading and causing environmental pollution and harm to the human body, and also preventing heat leakage, thus improving thermal efficiency by 8-10%. There are three electromagnetic heating coils 5442, spaced 65cm apart on the U-shaped tray 5441. They use eddy current heat energy generated by electromagnetic induction to electromagnetically heat and scramble the tea leaves. This electromagnetic induction heating method avoids scorching and produces no smoky or burnt taste. The advantages of using electromagnetic heating and a cast iron narrow-groove wok for tea leaf shaping are: electromagnetic radiation heating prevents scorching and produces no smoky or burnt taste; the reciprocating motion of the cast iron narrow-groove wok helps to quickly shape curled tea leaves into straight strips.

[0098] The rotary roasting and aroma-enhancing machine 55 includes a roller 551 rotatably mounted on a frame 52 and an electric heating device 553 for heating the roller 551. The roller 551 is arranged at an inclination of 3-5 degrees, with the feed end higher and the discharge end lower. The discharge end of the electromagnetic tea-scraping machine 54 is provided with a tea hopper 510, and the bottom of the tea hopper 510 is provided with a conveying pipe 511, the discharge end of which extends into the roller 551. The roller body 551 is 2.8M long and 1.1M in diameter, with a tea inlet at the front end and a tea outlet at the rear end. The roller 551 has a double-layer structure. The outer layer is made of stainless steel, and the inner layer is made of ceramic composite steel. This material has a microhardness of HV1000-1600, a density of 3.8-3.97 g / cm³, and a coefficient of thermal expansion of 6-8 × 10⁻⁶ / ℃. It possesses characteristics such as high temperature resistance, corrosion resistance, acid resistance, and strong heat retention. Therefore, it can not only efficiently dry tea leaves and tightly bind them into strips, but also reduce the breakage of buds and hairs. To further improve the rolling efficiency, three guide ribs 552, each 2.5 cm long, 1.8 cm wide, and 1.2 cm high, are evenly arranged on the inner wall of the roller 551. These guide ribs guide the tea leaves to roll and rub along the guide ribs 552, tightly binding them into an "eyebrow-like" shape.

[0099] The electric heating device 553 includes a heating tank 5531, a finned infrared quartz electric heating tube 5532 and a circular graphene electric heating tube 5533 arranged at the bottom of the heating tank 5531. The heating tank 5531 is made of cast iron, with a length of 2.5M, a width of 1.3M and a depth of 0.75M. It is arranged on the frame 52 and the roller 551 is embedded three-quarters of the way into the tank for electric heating in an open manner. At the same time, the residual heat can be transferred upward to the microwave striping machine and the electromagnetic striping machine for further heating. The specific arrangement of the finned infrared quartz electric heating tubes 5532 and the circular graphene electric heating tubes 5533 is as follows: Four finned infrared quartz electric heating tubes 5532 are arranged in two rows at a distance of 20-25cm at the feeding end of the drum 551 for far-infrared radiation heating to dry the moisture and roll the tea into strips; a 30-40cm temperature conversion zone is set in the middle to convert heat energy; two circular graphene heating tubes are arranged in a straight line at a distance of 15-20cm at the discharging end of the drum 551. Taking advantage of the advantages of graphene heating tubes such as uniform heating, far-reaching heat radiation, and fast heat exchange, the moisture content of the tea leaves is further dried to ≥5.5%, and the volatilization of aromatic substances is further promoted to enhance the aroma.

[0100] This machine utilizes the advantages of an electric heating roller drying machine. The inner wall of the roller, made of ceramic composite steel, and the long guide vane ribs facilitate rolling into a tight and heavy strip shape. The application of infrared quartz electric heating tubes and graphene electric heating tubes has a good effect on producing rich, fragrant, and high-quality tea.

[0101] This invention also includes a control device, employing a PLC intelligent control system. This system connects to a microwave shaping machine, an electromagnetic shaping machine, and a dual-heat tumbling drying and aroma-enhancing machine. Through a programmable control cabinet and a touch screen, the microwave shaping temperature, shaping time, and reciprocating frequency of the pan for the microwave shaping machine; the shaping temperature, shaping time, and reciprocating frequency of the pan for the electromagnetic shaping machine; and the tumbling drying temperature, tumbling drying time, and rotation speed of the drum for the electric heating tumbling drying machine, thus enabling intelligent shaping, tumbling, and drying operations for tea leaves.

[0102] The advantages of configuring the vertical strip-shaped premium tea shaping and drying unit 5 in this production line are: it not only realizes the continuous and intelligent processing of tea strip shaping and drying and aroma enhancement, solving the problems of existing equipment, single-machine operation, high energy consumption, complicated operation, high labor requirements, and large workshop area occupation, but also recovers, purifies and reuses the humid heat, improving thermal efficiency. In particular, the dual-heat rolling and drying aroma enhancement machine, which uses ceramic composite steel material for the inner wall of the drum, infrared quartz electric heating tube, and graphene electric heating tube, can produce strip-shaped, tightly packed, heavy, rich, mellow, and fragrant white tea with a unique flavor, and package it into small cans of Anji white tea through nitrogen-filled small cans.

[0103] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A continuous production line for small-canned Anji white tea, characterized in that: It includes a shaking machine (1), a withering and sun-drying machine (2), a fixing machine (3), a nitrogen-filled antioxidant continuous kneading and unblocking machine (4), and a vertical strip-shaped famous tea shaping and drying machine (5), which are connected in sequence through a conveying device. The feeding end of the shaking machine (1) is provided with a vibrating conveyor trough (6), which is arranged at an angle downwards. The feeding end of the vibrating conveyor trough (6) is provided with a feeding weighing hopper (7). The bottom of the vibrating conveyor trough (6) is a screen structure. A debris collection layer (61) is provided below the vibrating conveyor trough (6). A glass cover (62) is also provided above the vibrating conveyor trough (6). A set of ion wind suction fans (63) are arranged at intervals on the glass cover (62). A dust collection bag (64) is fitted on the ion wind suction fans (63). The vibrating conveyor trough (6) is located inside the ion wind suction fans. Below (63) is a material turner (65), which includes a material turner shaft (651) and a set of comb-shaped material turner claws (652) installed on the material turner shaft (651); the shaking machine (1) is a double-layer structure, including a stainless steel shell (101) and a bamboo shaking cage (102) fitted inside the stainless steel shell (101), and is also equipped with a transmission device and a control device, which can set the rotation speed of the shaking cage and the shaking time for intelligent shaking; a set of convex ribs (103) arranged along the axial direction are provided inside the bamboo shaking cage (102), and the stainless steel shell (101) is evenly distributed with ventilation slots; The withering and sun-drying machine (2) includes a withering frame (21), a hot air withering trough (22) on the upper layer of the withering frame (21), a light-drying layer (23) in the middle layer, and a cold air spreading layer (24) on the lower layer; a set of variable light lamps (232) are arranged at intervals on the top of the light-drying layer (23), which can emit red, white and orange light; and an atomizer (233) is also provided to spray the light-drying layer. The discharge end of the blanching machine (3) is connected to a windmill conveying device (9). The windmill conveying device (9) includes a feeding frame (91) and a feeding windmill (92) rotatably mounted on the feeding frame (91). A tea inlet hopper (93) connected to the discharge port of the blanching machine is provided on the upper side of the feeding windmill (92). The feeding windmill (92) includes a grooved feeding wheel (921). A set of partitions (922) are evenly arranged inside the grooved feeding wheel (921). The partitions (922) divide the grooved feeding wheel (921) into a series of independent feeding hoppers (923). Both the grooved feeding wheel (921) and the partitions (922) adopt a perforated plate structure. The bottom of each of the conveying hoppers (923) is connected to an air pipe (97), and a shut-off valve (971) is provided on the air pipe (97). The feeding blower (92) is also provided with an air suction plate (98) and a nitrogen filling plate (99). An air compressor (910) is connected to the air suction plate (98), and a nitrogen tank (911) is connected to the nitrogen filling plate (99). A set of air suction branch pipes (981) is provided on the air suction plate (98), and a set of nitrogen filling branch pipes (991) is provided on the nitrogen filling plate (99). Each air pipe (97) is connected to one of the air suction branch pipes (981) and the nitrogen filling branch pipe (991), and a three-way valve (912) is provided at the connection. The nitrogen-filled, antioxidant, continuous kneading and de-caking unit (4) includes a set of kneading machines (41) and a vibrating de-caking conveyor (42) connected to the discharge port of the kneading machines (41); the kneading machine (41) includes a kneading disc (411) and a kneading drum (412) and a drum cover (413) provided on the kneading drum (412); the drum cover (413) includes a bottom pressure plate (4131) and an upper sealing plate (4132), a nitrogen-filled chamber (4133) is provided between the bottom pressure plate (4131) and the upper sealing plate (4132), a nitrogen-filled air inlet valve (414) is provided on the upper sealing plate (4132), an air outlet valve (415) is provided at the center of the bottom pressure plate (4131), and a nitrogen-filled pipe (416) extending into the kneading drum (412) is connected to the air outlet valve (415); The vibratory deblocking conveyor (42) includes a deblocking frame (4210), a vibratory deblocking trough (421) arranged inclined upward on the deblocking frame (4210), a continuous corrugated groove (422) provided at the bottom of the vibratory deblocking trough (421), and a driving device (423) for driving the vibratory deblocking trough (421) to move; a set of dispersing filters (424) are also provided at intervals in the vibratory deblocking trough (421). The vertical strip-shaped premium tea shaping and drying machine unit (5) includes a closed chamber (51) and a shaping and drying machine frame (52) set inside the chamber (51). The shaping and drying machine frame (52) is arranged from high to low with a microwave strip forming machine (53), an electromagnetic strip forming machine (54) and a rolling drying and aroma enhancing machine (55). The microwave strip forming machine (53), the electromagnetic strip forming machine (54) and the rolling drying and aroma enhancing machine (55) are arranged in a Z-shape. The outlet of the microwave strip forming machine (53) is connected to the inlet of the electromagnetic strip forming machine (54), and the outlet of the electromagnetic strip forming machine (54) is connected to the inlet of the rolling drying and aroma enhancing machine (55). A set of hot and humid steam exhaust outlets (5101) is provided at the top of the chamber (51). The rotary dryer (55) includes a drum (551), a set of elongated guide vanes (552) are provided on the inner wall of the drum (551), and an electric heating device (553) for heating the drum (551); the electric heating device (553) includes a heating tank (5531), a finned infrared quartz electric heating tube (5532) and a circular graphene electric heating tube (5533) arranged at the bottom of the heating tank (5531); The microwave slicing machine (53) includes a microwave slicing machine fixed frame (531) fixedly mounted on the frame (52), a microwave slicing machine movable frame (532) reciprocating within the microwave slicing machine fixed frame (531), a set of microwave slicing troughs (533) arranged side by side on the microwave slicing machine movable frame (532), and a microwave heating device (534) located on the top of the cabin (51) and above the microwave slicing machine movable frame (532). The electromagnetic basting machine (54) includes an electromagnetic basting machine fixed frame (541) fixedly mounted on the frame (52), an electromagnetic basting machine movable frame (542) reciprocating within the electromagnetic basting machine fixed frame (541), a set of electromagnetic basting troughs (543) arranged side by side on the electromagnetic basting machine movable frame (542), and an electromagnetic heating device (544) arranged below the electromagnetic basting machine movable frame (542). The microwave slicing trough (533) is a wide trough with a width of 700 mm and a depth of 80 mm, while the electromagnetic slicing trough (543) is a narrow trough with a width of 600 mm and a depth of 75 mm.

2. The continuous production line for small-canned Anji white tea as described in claim 1, characterized in that: The feeding weighing hopper (7) includes a feeding hopper (71), a weighing device (72) located at the bottom of the feeding hopper (71), a weighing flip plate (73) provided at the bottom of the weighing device (72), a rotating shaft (74) connected to the weighing flip plate (73), and a servo motor (75) for driving the rotating shaft (74) to rotate. A feeding valve (76) is provided between the feeding hopper (71) and the weighing device (72). A metal electromagnetic roller (77) is provided inside the feeding hopper (71).

3. The continuous production line for small-canned Anji white tea as described in claim 2, characterized in that: An enzyme adder (8) is connected to the discharge end of the vibrating conveying trough (6). The enzyme adder (8) includes a uniform hopper (81) located below the discharge port of the vibrating conveying trough (6), a uniform leaf device (82) set in the uniform hopper (81), and an ultrasonic atomizer (83) fixed on the outside of the uniform hopper (81). The atomizing nozzle of the ultrasonic atomizer (83) is aligned with the uniform hopper (81).

4. The continuous production line for small-canned Anji white tea as described in claim 1, characterized in that: The vibratory de-blocking tank (421) is provided with a cold air pipe (426) for blowing air to cool the tea leaves inside the vibratory de-blocking tank (421).

5. The continuous production line for small-canned Anji white tea as described in claim 4, characterized in that: The driving device (423) includes a drive motor (4231), an eccentric shaft (4232) driven by the drive motor (4231), and a transmission frame (4233). A tie rod (4234) is provided between the transmission frame (4233) and the eccentric shaft (4232). A set of swing arms (4235) is provided on the deblocking frame (4210). The two ends of the swing arms (4235) are respectively connected to the transmission frame (4233) and the vibrating deblocking groove (421).

6. The continuous production line for small-canned Anji white tea as described in claim 1, characterized in that: Multiple kneading machines (41) are arranged side by side. A vibrating discharge trough (44) is arranged at an incline above the kneading machine (41). A set of openable discharge cover plates (441) is provided at the bottom of the vibrating conveying trough (44). A discharge cylinder (442) is provided below the discharge cover plate (441). The discharge cylinder (442) corresponds to the kneading machine (41) one by one. A receiving hopper (425) is provided on the side below the feeding fan (422) on the other side of the tea inlet hopper (423). The discharge end of the receiving hopper (425) is connected to the feeding end of the vibrating discharge trough (44). The kneading machine (41) is provided with a discharge conveyor belt (46) below it, and the discharge port of the discharge conveyor belt (46) is connected to the feed end of the vibrating deblocking trough (421).

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