Dynamic tea cultivating and baking all-in-one machine for Baihao silver needle tea

Abstract

The invention discloses a dynamic tea cultivating and baking all-in-one machine for Baihao silver needle tea, which is used for automatically cultivating and drying the withered and tedded Baihao silver needle tea so as to improve the tea cultivating and drying efficiency and improve the quality of the cultivated and dried tea. The all-in-one machine comprises a machine frame, a dynamic tea cultivating box arranged on the machine frame and used for cultivating tea and an electromagnetic hot air baking groove used for drying the tea, and aims to connect the dynamic tea cultivating box with the electromagnetic hot air baking groove, remove impurities in the tea before drying and prevent the tea drying quality from being affected by peculiar smells generated during drying. A screening impurity removing machine is arranged between the dynamic tea cultivating box and the electromagnetic hot air baking groove, and impurities in the tea leaves are removed while the tea leaves are conveyed through the screening impurity removing machine. The device can be widely applied to the field of tea cultivation and drying of the Baihao silver needle tea.

Description

Technical Field

[0001] This invention relates to the field of tea processing technology, specifically to a dynamic tea-nurturing and roasting integrated machine for Baihao Yinzhen tea. Background Technology

[0002] In the preparation of Baihao Yinzhen tea, tea nourishment and roasting are two crucial steps. The existing tea nourishment process involves spreading the tea leaves on bamboo mats, cloth mats, bamboo trays, or wooden troughs after withering and before roasting for 7-15 days for natural solid-state nourishment. This allows the internal moisture of the tea leaves to become more even, the color to change from bright green to dark green or grayish-green, the astringency to dissipate, and the tea's aroma to emerge, thus improving and optimizing the quality of Baihao Yinzhen tea. The roasting process involves transporting the nourished tea leaves to a drying room and drying them using charcoal-fired baskets or a drying machine to produce the finished Baihao Yinzhen tea. Traditional processes have three problems in these two steps: 1) low automation and high labor intensity; 2) long cycle and high cost; and 3) uncontrollable temperature during tea nourishment, preventing the rapid removal of moisture from the dried tea leaves, leading to mold growth and scorching of the edges during drying, resulting in poor quality tea after the nourishment and drying process. Therefore, it is necessary to develop a mechanical device to improve the automation of tea cultivation and drying, increase efficiency, and ensure the quality of tea. Summary of the Invention

[0003] The purpose of this invention is to provide a dynamic tea-nurturing and roasting integrated machine for Baihao Yinzhen tea, which solves the problems of low automation, long time, high cost, and inability to guarantee the quality of existing Baihao Yinzhen tea nurturing and drying processes.

[0004] The technical solution adopted by this invention to solve its technical problem is: a dynamic tea-nurturing and roasting integrated machine for Baihao Yinzhen tea, including a frame, a dynamic tea-nurturing box set on the frame, a sieving and impurity-removing machine connected to the discharge end of the dynamic tea-nurturing box, and an electromagnetic hot air roasting tank connected to the sieving and impurity-removing machine. The dynamic tea-nurturing box achieves temperature-controlled tea-nurturing, which not only improves the efficiency of tea-nurturing but also enhances the quality of the nurtured tea. The sieving and impurity-removing machine removes impurities from the tea leaves before drying, preventing them from affecting the aroma and quality of the tea during subsequent drying. The electromagnetic hot air roasting tank quickly removes internal moisture during drying, thus improving drying efficiency and preventing mold growth caused by moisture seepage during later storage. Furthermore, electromagnetic drying enhances the aroma of the tea, further improving the quality of the dried tea after nurturing.

[0005] To overcome the problems of slow moisture evaporation from tea leaves during solid-state tea cultivation, requiring a cultivation time of 7-10 days, and being prone to microbial growth and contamination during rainy weather, making it difficult to control the quality of the cultivated tea, the dynamic tea cultivation trough is designed with a three-layer structure. From top to bottom, it consists of a first hot air dynamic tea cultivation layer, a second hot air dynamic tea cultivation layer, and a third cold air dynamic tea cultivation layer. Each layer has a screen conveyor belt at the bottom for transporting tea leaves. By controlling the first screen conveyor belt to rotate forward, the second screen conveyor belt to rotate in reverse, and the third screen conveyor belt to rotate forward, the tea leaves are transferred layer by layer from the first layer downwards for dynamic tea cultivation. Simultaneously, a horizontal conveyor belt and an elevator are installed below the third cold air dynamic tea cultivation layer to return the tea leaves to the first hot air dynamic tea cultivation layer. Therefore, the tea cultivation process can be cyclically repeated multiple times according to the tea cultivation situation until the desired cultivation result is achieved. This machine can not only achieve dynamic tea cultivation but also cyclic dynamic tea cultivation.

[0006] To ensure breathable and dynamic tea aging, the conveyor belt uses an antibacterial bamboo charcoal fiber mesh conveyor belt. This type of conveyor belt allows for breathable transport of tea leaves without creating a stuffy or hot environment, and also prevents the growth of microorganisms that could affect the quality of the tea. To further prevent microorganisms from invading the tea aging tank and harming the quality of the tea, the side walls of the first and second layers of the tank are made of stainless steel with evenly distributed 80-100 mesh laser micropores. Hot air at 40-45℃ is blown into the tank through hot air pipes to prevent microorganisms from entering the tank. The laser micropores also help to dissipate some grassy odors and prevent tea leaves from being thrown off the conveyor belt. In the third layer, the cold air dynamic tea aging layer, only a 15-20cm high edge is provided to prevent tea leaves from being thrown off the conveyor belt. Ventilation windows are provided between the side walls of the third cold air dynamic tea aging layer and the second hot air dynamic tea aging layer to further promote the dissipation of grassy odors and humid heat, thus optimizing the quality of Baihao Yinzhen tea.

[0007] To enable dynamic tea cultivation, intermittent vibrators are installed below each layer of the screen conveyor belt to vibrate the belt and cause the tea leaves on it to bounce intermittently. This accelerates the release of moisture, grassy smell, and damp heat, speeding up the cultivation process and shortening the cultivation time. To ensure the tea leaves are evenly distributed on the conveyor belt, a feeding trough is installed above the feed end of each layer of the screen conveyor belt. The trough contains a serrated leaf-spreading roller, which rotates clockwise to evenly distribute the tea leaves falling from the upper conveyor belt onto the lower conveyor belt.

[0008] To enable temperature-controlled dynamic tea aging, a hot and cold air device is installed. This device consists of two cold air ducts and two hot air ducts. The outlets of the two cold air ducts are located at the discharge end of the third cold air dynamic tea aging layer and the inlet end of the second hot air dynamic tea aging layer, respectively, blowing cold air at 15-20°C into both layers. The outlets of the two hot air ducts are located at the inlet ends of the first and second hot air dynamic tea aging layers, respectively, blowing hot air at 40-45°C into both layers. Both the cold and hot air ducts are equipped with flow control valves. These valves control the airflow in each duct, thereby controlling the temperature. This intelligent temperature control optimizes the tea aging environment and accelerates the aging process.

[0009] The sieving and impurity removal machine includes an upper vibrating screen mounted on a frame and connected to the discharge end of the dynamic tea-nurturing box, and a lower vibrating screen located below the upper vibrating screen. The upper vibrating screen has narrow mesh holes with a length of 15-25mm and a width of 8-9mm, which blocks larger impurities such as fish leaves, yellow leaves, and leaf fragments mixed in with Baihao Yinzhen tea on the screen surface. These impurities are then collected and removed by a "∧"-shaped pine wood strip collector and a nylon collection bag arranged at an angle below the vibrating screen. The lower vibrating screen is generally wavy, with round holes with a diameter of 1-3mm. Through the vibration of the round mesh holes of the wavy vibrating screen, residual mud, dust, tea dust, small insects, insect eggs, and other small impurities are automatically sieved and removed, and clean and intact single-bud tea is output from the tea outlet.

[0010] The electromagnetic hot air roasting tank includes a roasting tank body, an electromagnetic device that provides electromagnetic radiation heat to the tea leaves in the tank is installed at the bottom of the roasting tank body, an air-source heat pump that blows air into the tank is installed at the feeding end of the roasting tank body, and a temperature and humidity detection device is also installed in the roasting tank body.

[0011] To efficiently utilize both electromagnetic and air-source heat pumps for roasting tea, this machine is designed with a trough structure. The sides of the roasting trough are made of stainless steel, the inner wall of the trough bottom is made of ceramic, and the outer wall is made of aluminum-titanium alloy composite material. One-third of the roasting trough is embedded inside, and dual air-source heat pump pipes are arranged at the feed end of the trough. During roasting, electromagnetic radiation heat energy causes the moisture contained in the tea leaves to overflow to the surface of the tea leaves. Then, the blowing force of the air-source heat pump causes the moisture on the surface of the tea leaves to evaporate quickly, achieving drying. This can improve thermal efficiency by 5-7%, shorten roasting time by 15-20%, and reduce roasting costs by 20-30%. In particular, the roasting trough with a ceramic non-stick inner wall can solve the problem of tea juice sticking to the bottom of the roasting trough and carbonizing, producing a smoky and burnt taste that affects quality. It can also roast high-quality tea with a rich aroma and flavor.

[0012] To facilitate the even spreading of tea leaves within the roasting tank, a rotating lead screw is installed above the tank, running along its length. A lead screw slider moves back and forth on the lead screw, and a drive gear is mounted on the slider. A leveling plate and a scraper are positioned on either side of the drive gear on the slider. Both the leveling plate and the scraper have racks that mesh with the drive gear. The rotation of the drive gear causes the leveling plate and scraper to move in opposite directions. The leveling plate includes a baffle plate and comb-like teeth below it; the shape of the scraper is adapted to the shape of the roasting tank. When even drying is required, the tea leaves enter one end of the roasting tank. The drive gear rotates, causing the leveling plate to descend and the scraper to rise. Then, the lead screw rotates, evenly spreading the tea leaves from the inlet to the outlet. When it is necessary to push the tea leaves out of the roasting tank, the drive gear rotates to drive the scraper to descend and the uniform plate to rise. Then the screw rotates to push the tea leaves from the feed end to the discharge end.

[0013] The beneficial effects of this invention are as follows: This invention uses a dynamic tea-nurturing box, a sieving and impurity-removing machine, and an electromagnetic hot air roasting tank to form an automated tea-nurturing, impurity-removing, and drying equipment. It not only has a high degree of automation and reduces tea-making costs, but also shortens the entire tea-nurturing and drying time and improves production efficiency. At the same time, by controlling temperature and humidity and adjusting time, it improves the quality of tea after tea-nurturing and drying.

[0014] The dynamic tea-nurturing box employs a three-layer structure for dynamic, cyclical tea nurturing. The first and second layers utilize hot air, accelerating the transformation of substances within the tea leaves through appropriate hot air temperatures. The third layer uses cold air at 15-20℃ to expedite the dissipation of moisture and grassy odors from the spread-out tea leaves, thereby improving tea quality. A lifting mechanism further circulates the nurturing process, controlling the temperature of each layer to accelerate the nurturing process while simultaneously enhancing the quality of the tea.

[0015] Before drying, a sieving and impurity removal machine is used to remove larger impurities such as fish leaves, yellow leaves, and stems from the tea leaves. At the same time, it removes tea dust, dust, and other fine impurities, so that the clean and uniform tea leaves can be fed into the electromagnetic hot air roasting tank for drying. This machine also serves as a transport mechanism, reducing the use of conveyor devices, simplifying the equipment, and reducing costs. At the same time, since the charring temperature of impurities is different from that of tea leaves, they may produce burnt smells and other non-tea flavors during drying, thus affecting the overall aroma and quality of the dried tea. The sieving and impurity removal machine of this invention can effectively solve the problem of impurities and off-flavors affecting the quality of tea during drying.

[0016] The electromagnetic hot air roasting tank uses both electromagnetic and hot air energy to dry tea leaves. Electromagnetic radiation heat energy causes the moisture inside the tea leaves to seep out to the surface and enhances the aroma. Then, the flexible hot air blowing force of the air energy promotes the rapid dissipation and drying of the water on the surface of the tea leaves, which can greatly improve the drying efficiency and ensure that the dryness of the tea leaves is consistent inside and out. This avoids the problem of traditional roasting methods that dry from the outside, where the moisture inside cannot seep out quickly, affecting the drying speed and not ensuring that the moisture content of the surface and inside of the dried tea leaves is consistent. During storage, the moisture inside may seep out and cause the tea leaves to become damp, leading to mold and affecting the shelf life of the tea leaves.

[0017] The present invention will now be described in more detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0018] Figure 1 This is the front view of the present invention.

[0019] Figure 2 This is a front view of the dynamic tea-nurturing box in this invention.

[0020] Figure 3 This is a schematic diagram of the inclined guide plate of the dynamic tea-nurturing box in this invention.

[0021] Figure 4 This is a side view of the guide plate assembly of the dynamic tea-nurturing box in this invention.

[0022] Figure 5 This is a top view of the assembly of the horizontal conveyor belt and the elevator of the dynamic tea-nurturing box in this invention.

[0023] Figure 6 This is a front view of the sieving and impurity removal machine in this invention.

[0024] Figure 7 This is a top view of the upper stepped vibrating screen assembly of the screening and impurity removal machine in this invention.

[0025] Figure 8 This is a front view of the electromagnetic hot air baking oven in this invention.

[0026] Figure 9 This is a side view of the electromagnetic hot air baking oven in this invention.

[0027] Figure 10 This is a top view of the assembly of the uniform plate and scraper plate of the electromagnetic hot air baking tank in this invention. Detailed Implementation

[0028] Examples, such as Figures 1 to 10As shown, a dynamic tea-nurturing and roasting integrated machine for Baihao Yinzhen tea is used for automated tea-nurturing and drying of Baihao Yinzhen tea after withering and spreading, improving the efficiency of tea-nurturing and drying and enhancing the quality of the tea after nurturing and drying. The integrated machine includes a frame 1, a dynamic tea-nurturing box 2 for nurturing the tea, and an electromagnetic hot air roasting tank 4 for drying the tea, all mounted on the frame 1. To connect the dynamic tea-nurturing box 2 and the electromagnetic hot air roasting tank 4, and to remove impurities from the tea before drying to prevent off-flavors from affecting the quality of the dried tea, a sieving and impurity-removing machine 3 is installed between the dynamic tea-nurturing box 2 and the electromagnetic hot air roasting tank 4. The sieving and impurity-removing machine 3 conveys the tea while simultaneously removing impurities from the tea.

[0029] The dynamic tea-cultivating box 2 adopts a three-layer trough structure with a length of 4.5m, a width of 1.2m, and a height of 1.8m. Three screen conveyor belts 24 are installed inside the box, dividing it into three independent tea-cultivating layers: a first hot-air dynamic tea-cultivating layer 21, a second hot-air dynamic tea-cultivating layer 22, and a third cold-air dynamic tea-cultivating layer 23, from top to bottom, to allow for dynamic tea cultivation at different temperatures. The first hot-air dynamic tea-cultivating layer 21 is a high-temperature dynamic tea-cultivating layer with a layer height of 50cm, allowing for thinly spread tea leaves for high-temperature dynamic tea cultivation at 40-45℃. The second hot-air dynamic tea-cultivating layer 22 is a medium-temperature dynamic tea-cultivating layer with a layer height of 60cm, allowing for thicker spread tea leaves for medium-temperature dynamic tea cultivation at 35-38℃. The third cold-air dynamic tea-cultivating layer 23 has a height of 70cm between layers to concentrate the tea leaves conveyed from the upper two layers, allowing for the induction of 15-20℃ cold air for low-temperature dynamic tea cultivation. To enable temperature-controlled and breathable dynamic tea cultivation and prevent the intrusion of microorganisms and bacteria into the tea-cultivating box, the box body is made of stainless steel, and the side walls of the first hot-air dynamic tea-cultivating layer 21 and the second hot-air dynamic tea-cultivating layer 22 are evenly distributed with 80-100 mesh laser micropores 211. This prevents heat leakage from the box and tea leaves from being thrown off the conveyor belt, and utilizes the blown-in hot air to prevent microorganisms and bacteria from entering the box and harming the tea cultivation quality. Simultaneously, the outer walls of the micropores dissipate some grassy odor. In the third layer of the cold-air dynamic tea-nurturing layer, only a 15-20cm high outer edge is set to prevent tea leaves from being thrown out of the conveyor belt. The rest of the structure is open, meaning that ventilation windows 212 are set between the side wall of the third cold-air dynamic tea-nurturing layer 23 and the second hot-air dynamic tea-nurturing layer 22. This allows for the dissipation of grassy and humid heat, optimizing the quality of Baihao Yinzhen tea.

[0030] The dynamic tea-nurturing box 2 is connected to a hot and cold air device 29. The tea leaves circulate and are dynamically nurtured within the dynamic tea-nurturing box 2. Hot and cold air is provided by the hot and cold air device 29 to nurture the tea, thereby improving the efficiency and quality of tea nurturing and reducing costs.

[0031] The hot and cold air device 29 is a KFRD-51LW / Y1-4 type air source heat pump. This machine has one hot air outlet and one cold air outlet. Two hot air pipes 292 are connected to the hot air outlet, and two cold air pipes 291 are connected to the cold air outlet. Flow control valves 293 are installed on both the hot and cold air pipes 291 and 292. The outlet of one hot air pipe 292 is positioned at the inlet of the first dynamic tea-cultivating layer 21 to blow 45-45℃ hot air into the first dynamic tea-cultivating layer 21 for high-temperature dynamic tea cultivation. One hot air pipe 292 and one cold air pipe 291 are positioned at the inlet of the second hot air dynamic tea-cultivating layer 22. By adjusting the airflow of the hot air pipe 292 and the cold air pipe 291, a mixed airflow is formed to blow 35-38℃ hot air into the second hot air dynamic tea-cultivating layer 22 for medium-temperature dynamic tea cultivation. A cold pipe 291 is placed at the outlet of the third cold air dynamic tea-nurturing layer 23 to blow in cold air at 15-20℃ in the opposite direction, which prompts the piled tea leaves to dissipate grassy smell and humid heat more quickly.

[0032] To control the temperature for tea cultivation, the frame 1 is also equipped with a temperature and humidity monitoring and control device 5 and a controller 6. The temperature and humidity monitoring and control device 5 includes a temperature and humidity detector 51 and a set of temperature and humidity sensors 52 connected to the temperature and humidity detector 51. A temperature and humidity sensor 52 is installed in each of the first dynamic tea cultivation layer 21, the second dynamic tea cultivation layer 22, and the third dynamic tea cultivation layer 23. The temperature and humidity sensors 52 acquire the real-time tea cultivation temperature of each layer. The temperature and humidity detector 51 inputs the detected temperature and humidity signals to the controller 6, which intelligently controls the blowing volume of cold and hot air to adjust the temperature and humidity of the tea cultivation tank, ensuring that the tea is cultivated in a suitable environment.

[0033] The screen conveyor belt 24 is a 15-20 mesh antibacterial bamboo charcoal fiber screen conveyor belt. This conveyor belt allows for breathable transport of tea leaves, preventing stuffiness and the growth of microorganisms that could affect the quality of the tea. To ensure the tea leaves are transported layer by layer downwards, the screen conveyor belt 24 on the first hot air dynamic tea-cultivating layer 21 is set to rotate forward, transporting tea leaves from left to right; the screen conveyor belt 24 on the second hot air dynamic tea-cultivating layer 22 is set to rotate in reverse, transporting tea leaves from right to left; and the screen conveyor belt 24 on the third cold air dynamic tea-cultivating layer 23 is set to rotate forward, transporting tea leaves from left to right. This process sequentially transports the tea leaves through "high-temperature hot air dynamic breathable tea cultivation → medium-temperature hot air dynamic breathable tea cultivation → cold air low-temperature tea cultivation." Dynamic air circulation for tea cultivation. To return the tea leaves from the third cold air dynamic tea cultivation layer 23 to the first hot air dynamic tea cultivation layer 21 for cyclical cultivation, a horizontal conveyor belt 25 is installed below the third cold air dynamic tea cultivation layer 23. The horizontal conveyor belt 25 receives the tea leaves from the third cold air dynamic tea cultivation layer 23 and conveys them to the left. A hoist 26 is connected to the left discharge end of the horizontal conveyor belt 25, and the discharge end of the hoist 26 is located above the feed end of the first hot air dynamic tea cultivation layer 21.

[0034] To facilitate connection with the screening and impurity removal machine 3, a guide plate 27 is provided below the discharge end of the first hot air dynamic tea-nurturing layer 21. A rotating shaft 271 is fixedly installed in the middle of the guide plate 27. The two ends of the rotating shaft 271 are rotatably mounted on the housing of the dynamic tea-nurturing box 2. A rotating motor 28 is also provided to drive the rotating shaft 271. A drive gear 281 is provided on the output shaft of the rotating motor 28, and a driven gear 272 that cooperates with the drive gear 281 is provided on the rotating shaft 271. When the tea needs to enter the second hot air dynamic tea-nurturing layer 22 for nurturing, the rotating motor 28 drives the guide plate 27 to rotate, keeping the guide plate 27 in a vertical state, and the tea falls directly from the first hot air dynamic tea-nurturing layer 21 to the second hot air dynamic tea-nurturing layer 22. After the tea cultivation is completed, the tea leaves are first sent back to the first hot air dynamic tea cultivation layer 21 via the horizontal conveyor belt 25 and the elevator 26. Then, driven by the screen conveyor belt 24 of the first hot air dynamic tea cultivation layer 21, the tea leaves are conveyed to the discharge end of the first hot air dynamic tea cultivation layer 21. At the same time, the flipping motor 28 drives the guide plate 27 to flip, causing the guide plate 27 to tilt. The tea leaves on the first hot air dynamic tea cultivation layer 21 slide down the guide plate 27 onto the screening and impurity removal machine 3.

[0035] The sieving and impurity removal machine 3 includes a set of support legs 36 mounted on the frame 1 and a vibrating frame 37 mounted on the support legs 36. The vibrating frame 37 is provided with an upper vibrating screen 31 that is connected to the guide plate 27 of the dynamic tea-nurturing box 2 and a lower vibrating screen 32 located below the upper vibrating screen 31. The discharge end of the lower vibrating screen 32 is located above the feed end of the electromagnetic hot air roasting tank 4. The upper vibrating screen 31 and the lower vibrating screen 32 are arranged on the vibrating frame 37 with a downward tilt of 6-8 degrees for inclined impurity removal and conveying.

[0036] The upper stepped vibrating screen 31 and the lower vibrating screen 32 are supported on the vibrating frame 37 by a set of vibrating springs 310. The vibration of the vibrating frame 37 drives the upper vibrating screen 31 and the lower vibrating screen 32 to vibrate together, thereby achieving the screening of tea leaves. To drive the vibration of the vibrating frame 37, a vibrator 38 is provided on the vibrating frame 37, and a damping spring 39 is provided between the support foot 36 and the vibrating frame 37. The vibrator 38 is preferably a vibrating motor.

[0037] The upper vibrating screen 31 has narrow mesh openings with a length of 15-25mm and a width of 8-9mm. A "∧"-shaped pine wood strip collector 33 and a nylon collection bag 34 are installed 0.6-0.8m below the outlet of the upper vibrating screen 31 to collect and remove larger debris such as fish leaves, yellow leaves, and stems from the screen surface. The lower vibrating screen 32 is wavy in shape, with round holes of 1-3mm in diameter. When the Baihao Yinzhen tea, whose large debris has been removed from the upper stepped vibrating screen 31, falls onto the lower vibrating screen 32 for vibration and sieving, residual mud, dust, tea dust, and other small impurities are quickly sieved through the round mesh openings, resulting in clean and uniform Baihao Yinzhen tea being output from the outlet. To facilitate the collection of sieved debris, a nylon bag 35 is placed under the lower vibrating screen 32 to collect and remove small debris such as mud, sand, dust, tea dust, small insects and insect eggs, thereby improving the cleanliness of the workshop.

[0038] The electromagnetic hot air roasting tank 4 includes a roasting tank body 41 mounted on a frame 1. An electromagnetic device 42 is provided below the roasting tank body 41 to provide electromagnetic radiation heat to the tea leaves in the tank. An air-source hot air blower 43 is provided at the feeding end of the roasting tank body 41 to blow air into the tank.

[0039] The baking tank 41 is a U-shaped tank structure with a length of 2.6m, a width of 1.2m, and a depth of 0.9m. The baking tank 41 includes a U-shaped bottom 411 and sides 412 located on both sides of the bottom 411. The sides 412 are made of stainless steel. The bottom 411 has a double-layer structure: the inner wall is made of ceramic material (ceramic layer 4111), and the outer wall is made of aluminum-titanium alloy composite material (aluminum-titanium alloy composite layer 4112). The high strength, flexibility, rapid heat conduction, and uniform heat distribution of aluminum-titanium alloy are utilized to improve the drying efficiency and heating uniformity of the tea leaves. The non-stick properties of the ceramic inner wall solve the problem of tea juice easily sticking to the pan and scorching, affecting quality. To reduce heat loss, a quartz mica insulation layer 47 is wrapped around the outermost layer. The electromagnetic device 42 and the baking tank 41 are both located within the insulation layer 47 to prevent heat loss and maintain the baking temperature.

[0040] The electromagnetic device 42 includes a U-shaped groove 421 fitted outside the roasting tank 41. Three sets of electromagnetic heating coils 422 are installed inside the U-shaped groove 421, and an electromagnetic generator 423 is connected to each electromagnetic heating coil 422. The three sets of electromagnetic heating coils 422 are evenly spaced 0.7-0.8m apart within the U-shaped groove 421. The high temperature of 130-150℃ electromagnetic radiation generated by electromagnetic induction heats the tea leaves in the roasting tank 41. To prevent direct electromagnetic radiation from scorching the tea leaves, the lower third of the roasting tank 41 is placed inside the U-shaped groove 421, with a gap of 0.8-1.1cm between the U-shaped groove 421 and the roasting tank 41. This gap is filled with silicon carbide (diamond sand) 424 for intermittent low-radiation heat conduction. This not only blocks the electromagnetic waves from scorching the tea leaves but also uses the silicon carbide to retain heat, improving drying efficiency and promoting the volatilization of aromatic substances to enhance aroma.

[0041] The air-source heat pump 43 is a KFRD-51LW / Y1 type air-source heat pump. This machine also has the function of switching between hot and cold air modes. In hot air mode, it can directly blow 55-65℃ hot air into the roasting tank 41. If the roasting temperature inside the roasting tank 41 is too high, it can switch to cold air mode, blowing 15-20℃ cold air to cool it down, achieving dual-purpose functionality. Two hot air pipes 431 of the air-source heat pump 43 are arranged side-by-side at the air inlet of the hot air chamber 432, located 40-50cm from the feeding end of the roasting tank 41. The hot air chamber 432 is funnel-shaped, and its outlet width matches the width of the roasting tank, so that 50-55℃ hot air is blown into the tank with equal width. The blowing force of the hot air also promotes the evaporation of moisture from the tea leaves, achieving rapid drying. To prevent hot air from directly damaging the tea buds, a 120-130 mesh stainless steel filter cover 433 is installed at the air outlet of the hot air chamber 432 to soften the airflow and blow a gentle breeze into the trough to dry the tea leaves.

[0042] To facilitate the even spreading of tea leaves within the roasting tank 41, a rotating lead screw 46 is arranged along the length of the roasting tank 41 above the tank. A lead screw slider 47, which moves back and forth on the lead screw 46, is mounted on the lead screw slider 47. A drive gear 48 is mounted on the lead screw slider 47. A uniform material plate 49 and a scraper plate 410 are located on either side of the drive gear 48 on the lead screw slider 47. Both the uniform material plate 49 and the scraper plate 410 are equipped with racks 411 that mesh with the drive gear 48. The rotation of the drive gear 48 causes the uniform material plate 49 and the scraper plate 410 to move in opposite directions; that is, as the drive gear 48 rotates, the uniform material plate 49 rises while the scraper plate 410 descends. The up-and-down movement of the uniform material plate 49 and the scraper plate 410 can be controlled by controlling the forward and reverse rotation of the drive gear 48. Furthermore, the height at which the uniform material plate 49 and the scraper plate 410 rise and fall can be controlled by controlling the number of rotations of the drive gear 48. To achieve uniform material distribution, the material distribution plate 49 includes a baffle plate 491 and comb-like teeth 492 located below the baffle plate 491. The comb-like teeth 492 can turn the tea leaves, while the baffle plate 491 can push the tea leaves that are too high forward for uniform distribution. The shape of the scraper plate 410 is adapted to the shape of the roasting tank 41, that is, the bottom is a U-shaped structure of the same size as the bottom 411 of the tank, and the top is a rectangular structure adapted to the width between the two sides 412 of the tank. When it is necessary to discharge the material, the drive gear 48 drives the scraper plate 410 to descend to the bottom, so that the hanging plate 410 fits against the roasting tank 41. Then, the screw 46 is rotated to drive the tea leaves forward.

[0043] To monitor the temperature and humidity inside the roasting tank 41 in real time, a temperature and humidity sensor 52 is also installed on the lead screw slider 47. The temperature and humidity sensor 52 moves back and forth with the lead screw slider 47 to obtain the temperature and humidity conditions of each area inside the roasting tank 41. First, the controller 6 sets the electromagnetic roasting temperature, the hot air blowing temperature, and the roasting time to perform dual-heat drying of the tea leaves. Then, the temperature and humidity signals detected by the temperature and humidity sensor 52 are input into the controller 6 through the temperature and humidity detector 51, which adjusts the electromagnetic temperature of the electromagnetic device and the hot and cold air temperatures of the air source heat pump to achieve efficient roasting of the tea leaves in the tank. Drying is stopped when the moisture content is between 5% and 6%.

[0044] 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 dynamic tea-roasting and tea-cultivating integrated machine for Baihao Yinzhen tea, characterized in that: Includes a frame (1), a dynamic tea-nurturing box (2) set on the frame (1), a sieving and impurity-removing machine (3) connected to the discharge end of the dynamic tea-nurturing box (2), and an electromagnetic hot air baking tank (4) connected to the sieving and impurity-removing machine (3). The dynamic tea-nurturing box (2) has three layers from top to bottom: the first hot air dynamic tea-nurturing layer (21), the second hot air dynamic tea-nurturing layer (22), and the third cold air dynamic tea-nurturing layer (23). Each layer has a screen conveyor belt (24) for conveying tea leaves at the bottom. The sieving and impurity removal machine (3) includes an upper vibrating screen (31) set on the frame (1) and connected to the discharge end of the dynamic tea-nurturing box (2) and a lower vibrating screen (32) located below the upper vibrating screen (31). The upper vibrating screen (31) has a narrow mesh with a diameter of 15-25mm and a width of 8-9mm. The lower vibrating screen (32) is wavy in shape and has round holes with a diameter of 1-3mm. The electromagnetic hot air roasting tank (4) includes a roasting tank body (41), and an electromagnetic device (42) is provided below the roasting tank body (41) to provide electromagnetic radiation heat to the tea leaves in the tank. An air-source hot air blower (43) is provided at the feeding end of the roasting tank body (41) to blow air into the tank.

2. The dynamic tea-nurturing and roasting integrated machine for Baihao Yinzhen tea according to claim 1, characterized in that: Below the third cold air dynamic tea cultivation layer (23), there is a horizontal conveyor belt (25) that is connected to the outlet of the third cold air dynamic tea cultivation layer (23). The outlet end of the horizontal conveyor belt (25) is connected to an elevator (26), and the outlet end of the elevator (26) is located above the inlet end of the first hot air dynamic tea cultivation layer (21).

3. The dynamic tea-nurturing and roasting integrated machine for Baihao Yinzhen tea according to claim 2, characterized in that: A guide plate (27) is provided below the discharge end of the first hot air dynamic tea nourishing layer (21). A rotating shaft (271) is fixedly provided in the middle of the guide plate (27). Both ends of the rotating shaft (271) are rotatably installed on the box body of the dynamic tea nourishing box (2). A rotating motor (28) is also provided to drive the rotating shaft (271) to rotate. A drive gear (281) is provided on the output shaft of the rotating motor (28). A driven gear (272) that cooperates with the drive gear (281) is provided on the rotating shaft (271).

4. The dynamic tea-nurturing and roasting integrated machine for Baihao Yinzhen tea according to claim 1, characterized in that: The dynamic tea-cultivating box (2) is also connected to a hot and cold air device (29). The hot and cold air device (29) is equipped with two cold air pipes (291) and two hot air pipes (292). The outlets of the two cold air pipes (291) are respectively located at the discharge end of the third cold air dynamic tea-cultivating layer (23) and the inlet end of the second hot air dynamic tea-cultivating layer (22), and blow cold air at 15-20°C to the second hot air dynamic tea-cultivating layer (22) and the third cold air dynamic tea-cultivating layer (23). Air; the air outlets of the two hot air pipes (292) are respectively set at the feed ends of the first hot air dynamic tea nourishing layer (21) and the second hot air dynamic tea nourishing layer (22) to blow hot air of 40-45℃ into the first hot air dynamic tea nourishing layer (21) and the second hot air dynamic tea nourishing layer (22); both the cold air pipe (291) and the hot air pipe (292) are equipped with flow control valves (293), and the air volume of each air pipe is controlled by the flow control valves (293) to achieve temperature control.

5. The dynamic tea-nurturing and roasting integrated machine for Baihao Yinzhen tea according to claim 1, characterized in that: The upper vibrating screen (31) is fitted with a "∧" shaped waste collector (33) at its outlet, and a nylon waste collection bag (34) is fitted over the outlet of the "∧" shaped waste collector (33); a nylon bag (35) is fitted over the lower vibrating screen (32).

6. The dynamic tea-nurturing and roasting integrated machine for Baihao Yinzhen tea according to claim 1, characterized in that: A set of support feet (36) is provided on the frame (1), a vibration frame (37) is provided on the support feet (36), a vibrator (38) is provided on the vibration frame (37), and a damping spring (39) is provided between the support feet (36) and the vibration frame (37).

7. The dynamic tea-nurturing and roasting integrated machine for Baihao Yinzhen tea according to claim 1, characterized in that: The baking tank (41) includes a bottom (411) and sides (412) on both sides of the bottom (411). The sides (412) are made of stainless steel. The bottom (411) has a double-layer structure, with an inner wall of ceramic material (4111) and an outer wall of aluminum-titanium alloy composite material (4112).

8. The dynamic tea-nurturing and roasting integrated machine for Baihao Yinzhen tea according to claim 1, characterized in that: The electromagnetic device (42) includes a U-shaped groove (421) fitted outside the baking tank (41). A set of electromagnetic heating coils (422) is provided inside the U-shaped groove (421). An electromagnetic generator (423) is connected to the electromagnetic heating coils (422). A gap is provided between the U-shaped groove (421) and the baking tank (41). The gap is filled with diamond grit (45).

9. The dynamic tea-nurturing and roasting integrated machine for Baihao Yinzhen tea according to claim 1, characterized in that: A rotating lead screw (46) is arranged above the baking tank (41) along the length of the baking tank (41). A lead screw slider (47) is arranged on the rotating lead screw (46) and moves back and forth on the rotating lead screw (46). A drive gear (48) is arranged on the lead screw slider (47). A uniform plate (49) and a scraper (410) are arranged on both sides of the drive gear (48) on the lead screw slider (47). A rack (411) that cooperates with the drive gear (48) is arranged on both the uniform plate (49) and the scraper (410). The rotation of the drive gear (48) drives the uniform plate (49) and the scraper (410) to move in opposite directions.

10. The dynamic tea-nurturing and roasting integrated machine for Baihao Yinzhen tea according to claim 9, characterized in that: The uniform plate (49) includes a baffle plate (491) and comb-like teeth (492) located below the baffle plate (491); the shape of the scraper plate (410) is adapted to the shape of the baking tank (41).

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