Intelligent tea processing device

Abstract

The present application relates to the technical field of tea processing, in particular to a kind of intelligent equipment for tea processing, including rack, control cabinet, vacuum pump, feed ladder, buffer box, conveying belt one, infrared lamp, the control cabinet is arranged in one side of the rack, the buffer box is arranged in the rack inside close to the side of feed ladder, conveying belt one and infrared lamp are arranged in the rack inside.This application controls the feed ladder to transport tea raw materials by control cabinet, vacuum pump continuously removes the air inside the rack to form negative pressure, and controls the buffer box to switch the feed intermittently, so that while the feed ladder continuously feeds, the inside of the rack can be continuously isolated from the outside to maintain negative pressure state, and multiple infrared lamps are arranged to irradiate and heat the tea, and the heating temperature is set to 30-95 DEG C, forming a low-temperature drying state under negative pressure, which ensures drying quality while maintaining continuous feeding, with high drying efficiency.

Description

Technical Field

[0001] This invention relates to the field of tea processing equipment technology, specifically to an intelligent device for tea processing. Background Technology

[0002] Green tea processing involves multiple steps, including two main operations: primary processing and refining. The purpose of primary processing is to produce raw tea, while refining is to further process the raw tea produced in primary processing. Both primary and refining processes involve drying. Tea production is gradually pursuing intelligent automation, high efficiency, and high quality production, which is why intelligent tea processing equipment is receiving increasing attention.

[0003] Currently, there are various types of tea drying equipment, mainly high-temperature hot air drying and low-temperature high-pressure blowing drying. Low-temperature negative pressure drying is less commonly used. For the sake of production efficiency, high-temperature hot air drying is the most common method. Therefore, existing research on tea drying equipment mainly focuses on high-temperature hot air drying equipment, with very little research on low-temperature negative pressure drying equipment. However, research has shown that high-temperature hot air drying equipment significantly degrades the chlorophyll in green tea leaves, resulting in a darker color after drying and affecting the quality of the finished green tea product. For example, in their 2019 paper, "Optimization Research on Low-Temperature Negative Pressure Drying Process of Green Tea," Su Xiaoqin, Zuo Xiaobo, and Yang Xiufen mentioned that "high-temperature hot air drying exposes tea leaves to high-intensity heat and moisture, causing significant degradation of chlorophyll and a severe color change after drying, which has a certain impact on the quality and selling price of green tea." Their experimental research data shows that low-temperature negative pressure drying is more conducive to chlorophyll preservation.

[0004] Regarding low-temperature negative pressure drying equipment, there are existing designs and research, such as the patent "Multi-layer Heating Low-Temperature Negative Pressure Drying and Roasting Equipment for Tea (CN201820930035.9)". Its technical solution includes multiple drying chambers, with heat transferred through heating tanks to heat-conducting plates to maintain a consistent temperature within the drying chambers. A vacuum pump draws gas from the chambers, creating a negative pressure environment. The aim of this technology is to achieve airflow heat recycling and save energy. However, it has not shown positive effects on chlorophyll retention or uniform drying. The patent "Drum-type Variable Pressure Drying Machine (CN210663710U)" also utilizes low-temperature negative pressure drying technology for tea. However, its tea feeding method is a drawer-type, requiring equipment interruption for each feeding and unloading. Existing chain-plate dryers can continuously feed tea, but their open design prevents negative pressure drying, resulting in poor drying performance.

[0005] To address this issue, an intelligent device for tea processing is proposed to solve the technical problems of excessive chlorophyll degradation and darkened tea color in existing technologies. Summary of the Invention

[0006] The purpose of this invention is to provide an intelligent device for tea processing, which enables the chain plate dryer to continuously feed material while maintaining internal negative pressure by setting a buffer box, thereby solving the technical problems of low-temperature negative pressure drying technology, such as the inability to feed material continuously and low efficiency.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] An intelligent tea processing device includes a frame and a control cabinet. The control cabinet is located on one side of the frame. A feeding ladder is provided at one end of the frame. A feeding port is provided at the top of the frame near the feeding ladder. A buffer box is fixedly installed below the feeding port. A first conveyor belt is provided inside the frame. The first conveyor belt is located below the buffer box, and one end of the first conveyor belt is located directly below the buffer box. A second conveyor belt is provided on the feeding ladder. Multiple infrared lights are fixedly installed inside the frame. An automatic sealing device is provided on the buffer box.

[0009] A vacuum pump is fixedly installed on the top wall of the frame. The input end of the vacuum pump is connected to the inside of the frame. A discharge port is provided at the bottom of the frame away from the feeding ladder. A receiving box is provided at the discharge port. The control cabinet uses a PLC controller for intelligent control.

[0010] Specifically, the feed inlet is connected to the feed elevator, with one end of the feed elevator extending into the feed inlet. The feed elevator is automatically controlled by the control cabinet and is equipped with an automatic tea transport mechanism. The tea leaves enter the feed inlet through the feed elevator, pass through the buffer box, and fall onto conveyor belt one. Multiple infrared lamps irradiate the tea leaves to heat them. The running time of conveyor belt one is controlled by the control cabinet, and its running speed and length are combined to form the tea leaf heating time. A vacuum pump sucks away the air in the frame to create negative pressure. After the tea leaves fall into the receiving box, they are no longer affected by the irradiation heating and negative pressure. The transportation time of the tea leaves on conveyor belt one is the tea leaf negative pressure time and heating time. The temperature value generated by the infrared lamps is adjustable from 30℃ to 95℃.

[0011] Optionally, the vacuum pump may be a vacuum pump with an internal moisture filtration structure, or a custom vacuum pump may be used.

[0012] Preferably, the buffer box includes a first cavity, a second cavity, and an automatic sealing device. The automatic sealing device includes a support frame, a motor, a first sealing plate, and a second sealing plate. Two support frames are provided, and the two support frames are symmetrically fixedly installed on the side wall of the buffer box in the vertical direction. Two motors are provided, and the two motors are respectively fixedly installed on the support frames. Two sliding grooves are opened on the buffer box, and the first sealing plate and the second sealing plate are slidably installed in the two sliding grooves. A gear is fixedly installed at the output end of each motor. A rack that meshes with the gear is fixedly connected to the side wall of the first sealing plate and the second sealing plate. The motor is electrically connected to the control cabinet through wires.

[0013] It is easy to understand that in the above preferred embodiment, the lengths of both the sealing plate 1 and the sealing plate 2 are greater than the length of the buffer box. The control cabinet controls the rotation of the two motors, thereby driving the sealing plate 1 and the sealing plate 2 to move, realizing two operations: ① The first chamber is fed into the first chamber and the second chamber is stored. When the first chamber is full of tea leaves, the sealing plate 1 moves to a position that completely seals the first chamber, isolating the first chamber from the outside air of the frame. The sealing plate 2 moves towards the second chamber to completely seal the bottom of the second chamber, isolating the second chamber from the inside of the frame, thus completely isolating the inside of the frame from the outside. A small opening is left at the bottom of the first chamber to allow the tea leaves in the first chamber to fall onto the conveyor belt 1. At this time, the sealing plate 1 leaves a large opening at the top of the second chamber, allowing the tea leaves transported by the feeding elevator to enter the second chamber for buffering. ② The second chamber discharges material while the first chamber stores it. After all the tea leaves in the first chamber have fallen out, the second chamber is full. The second sealing plate moves towards the first chamber to completely seal the bottom of the first chamber, isolating it from the inside of the frame. A small opening is left at the bottom of the second chamber to allow the tea leaves to fall onto the first conveyor belt. At this time, the first sealing plate leaves a large opening at the top of the first chamber, allowing tea leaves transported by the feed elevator to enter the first chamber for buffering. This cycle ensures that the inside of the frame is always under negative pressure, and the tea leaves are always fed continuously, achieving the continuity of the low-temperature negative pressure drying technology.

[0014] Furthermore, the control cabinet controls the distance of the moving sealing plate two to adjust the thickness of the tea leaves falling onto the conveyor belt one. The control cabinet automatically calculates the thickness of the tea leaves falling onto the conveyor belt one based on the set negative pressure value and infrared lamp heating temperature value, and automatically adjusts the opening width left by the sealing plate two based on this thickness value to control the thickness of the tea leaves on the conveyor belt one.

[0015] Preferably, there are three conveyor belts, which are arranged vertically at intervals and staggered to form a serpentine route. The conveyor belt in the middle position runs in the opposite direction to the other two conveyor belts, but at the same speed.

[0016] Specifically, three conveyor belts are arranged vertically at intervals to form a serpentine route, transporting the tea leaves layer by layer to ensure sufficient negative pressure drying time.

[0017] Preferably, the infrared lamps are arranged in multiple rows at intervals, and the multiple rows of infrared lamps are symmetrically arranged on the upper and lower sides of the conveyor belt. Each conveyor belt is provided with a feeding plate, and the feeding plate has multiple light-transmitting holes. The multiple light-transmitting holes are arranged at intervals and staggered.

[0018] Specifically, the infrared lamp can be a square horizontal strip lamp, which spans across the surface of the first conveyor belt and is parallel to the surface of the first conveyor belt. The distance between each infrared lamp and the surface of the first conveyor belt is 7 to 11 cm, and the spacing between each two adjacent infrared lamps is 7 to 11 cm to ensure optimal heating efficiency.

[0019] Preferably, a sleeve is fixedly installed on the outer wall of the frame, a slide rod is slidably installed on the sleeve, an air pump is fixedly installed on the bottom wall of the slide rod away from the sleeve, a discharge hopper is fixedly installed on the bottom wall of the slide rod, the discharge hopper is located on one side of the air pump, the output end of the air pump is connected to the inside of the discharge hopper, a telescopic pipe is fixedly connected to the side wall of the discharge hopper, the end of the telescopic pipe away from the discharge hopper is connected to the receiving box, and a guide port is fixedly connected to the bottom wall of the discharge hopper;

[0020] A solenoid valve is installed at the connection between the receiving box and the telescopic tube, and the solenoid valve is electrically connected to the control cabinet.

[0021] Specifically, when it is necessary to unload the tea leaves in the receiving box, the person holds the slide bar to move the air pump to the appropriate position, and operates the control cabinet to start the air pump. The solenoid valve opens, and the tea leaves in the receiving box are pulled out of the receiving box. The tea leaves fall into the designated position through the discharge hopper and guide port, reducing the contact between the dried tea leaves and the air, and reducing the secondary impact of moisture in the air on the drying effect of the tea leaves.

[0022] Optionally, a soft cloth tube can be fitted onto the feed inlet to guide the tea leaves to various angles, adapting to the different heights and widths of various devices, ensuring that the tea leaves fall accurately to the corresponding positions. A button is installed on the slide rod, electrically connected to the control cabinet, the vacuum pump, and the solenoid valve. When tea leaves need to be pumped from the receiving box, pressing the button opens the solenoid valve, starts the vacuum pump, and the tea leaves move from the shrink tube to the discharge hopper and fall through the feed inlet to the designated position, completing the unloading. The PLC controller has temperature compensation, pressure compensation, and speed compensation functions. When the vacuum pump starts, the pressure compensation function is automatically triggered, compensating for the internal pressure of the frame with the same pressure value as the vacuum pump, maintaining the pressure balance inside the frame without affecting the unloading of the receiving box. The drying operation does not need to be interrupted during unloading.

[0023] Specifically, the discharge hopper is equipped with a baffle net and an air outlet. The baffle net and air outlet are located above the guide port, and the baffle net is located in front of the air outlet. It is used to block the tea leaves so that they are separated from the air and to buffer the tea leaves so that they fall slowly to the guide port.

[0024] Preferably, the bottom of the discharge port is provided with a sliding groove, the top of the receiving box is slidably installed in the sliding groove, and a sealing ring is fitted at the connection between the receiving box and the sliding groove.

[0025] Furthermore, when it is necessary to clean the moving receiving box, the receiving box can be moved out manually. The sealing ring is set to ensure that it can be moved while also ensuring good airtightness.

[0026] A pressure sensor is fixedly installed on the top wall inside the frame, and a temperature sensor is provided on the surface of the first conveyor belt. The control cabinet is connected to the pressure sensor, vacuum pump, infrared lamp, and first conveyor belt respectively via wires.

[0027] Preferably, the PLC controller adjusts the heating power of the infrared lamp according to the temperature value of the temperature sensor, the PLC controller adjusts the output power of the vacuum pump according to the value detected by the pressure sensor, and the PLC controller adjusts the running speed of the first conveyor belt according to the values ​​sensed by the pressure sensor and the temperature sensor.

[0028] Specifically, when the pressure value detected by the pressure sensor deviates from the set pressure value, the PLC controller adjusts the running speed of conveyor belt one to adaptively adjust the negative pressure time and adjusts the output power of the vacuum pump to correct the internal pressure of the frame. When the temperature value detected by the temperature sensor deviates from the set temperature value, the PLC controller automatically adjusts the running speed of conveyor belt one to adaptively adjust the heating time and adjusts the output power of the infrared lamp to compensate for the temperature.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0030] 1. The system is equipped with a frame, feeding elevator, buffer box, conveyor belt 1, vacuum pump, and infrared lamps, and features a control cabinet for intelligent automated control. The vacuum pump extracts air from the frame, creating a negative pressure environment, while the infrared lamps irradiate and heat the tea leaves, maintaining a temperature between 30℃ and 95℃. This low-temperature, negative-pressure drying process minimizes the loss of effective components and achieves optimal drying results. A buffer box, consisting of two chambers, is installed on the top wall near the feeding elevator end of the frame. During feeding, the tea leaves fall from the feeding elevator into chamber 1 or chamber 2 of the buffer box. Inside cavity two, the material passes through a buffer box and then falls onto conveyor belt one for heating. An automatic sealing device on the buffer box automatically stores or discharges material into cavity one or cavity two. When cavity one stores material, cavity two discharges material, thus automatically cycling through the process. This ensures continuous feeding while maintaining a continuous isolation between the inside and outside of the frame. This solves the problem that existing low-temperature negative pressure drying equipment uses drawer-type material boxes for discharging, requiring equipment interruption for each material retrieval or discharge, resulting in low continuity of drying. It also solves the technical problem that existing continuously feeding drying equipment cannot use low-temperature negative pressure drying, leading to low drying quality.

[0031] 2. By setting up a sleeve, slide bar, air pump, and telescopic tube, the tea leaves need to be removed and placed in the kneading equipment or other processes for further processing. At this time, the operator can manually hold the slide bar to move the guide port to the corresponding equipment inlet. The operator presses the button to start the air pump and open the solenoid valve. The air pump draws air to create a pressure difference, and the tea leaves are pumped through the telescopic tube to the discharge hopper. After being buffered and slowed down by the baffle net in the discharge hopper, the tea leaves fall to the guide port so that they can fall smoothly into the kneading equipment or other processing equipment.

[0032] 3. Temperature and pressure sensors are installed, and a PLC controller is used in the control cabinet. Temperature and pressure compensation functions are set. The PLC controller automatically adjusts the vacuum pump power, conveyor belt speed, and infrared lamp heating power according to the values ​​reflected by the temperature and pressure sensors, so that the pressure and temperature can be maintained at specific set values, ensuring the quality of low-temperature negative pressure drying of tea and minimizing the loss of effective components in tea. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0034] Figure 2 This is a cross-sectional view of the overall structure of the present invention;

[0035] Figure 3 This is a schematic diagram of the air pump and telescopic pipe of the present invention;

[0036] Figure 4 This is a schematic diagram of the buffer box structure of the present invention;

[0037] Figure 5 This is a schematic diagram of the infrared lamp mounting structure of the present invention;

[0038] Figure 6 This is a schematic diagram of the feeding plate structure of the present invention;

[0039] Figure 7 for Figure 2 Enlarged view of point A in the middle;

[0040] Figure 8 This is a cross-sectional view of the feed hopper structure of the present invention.

[0041] In the diagram: 1. Frame; 2. Feed elevator; 3. Buffer box; 301. Cavity 1; 302. Cavity 2; 4. Motor; 5. Vacuum pump; 6. Material baffle; 7. Sealing ring; 8. Air pump; 9. Discharge hopper; 10. Sliding rod; 11. Infrared lamp; 12. Feeding plate; 13. Light-transmitting hole; 14. Telescopic tube; 15. Sleeve; 16. Receiving box; 17. Gear; 18. Conveyor belt 1; 19. Conveyor belt 2; 20. Control cabinet; 21. Guide port; 22. Solenoid valve; 23. Sliding groove; 24. Rack; 25. Temperature sensor; 26. Support frame; 27. Pressure sensor; 28. Feed inlet; 29. ​​Clamping block; 30. Sealing plate 1; 31. Sealing plate 2. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Example 1

[0044] Please see Figures 1 to 8 This invention provides an intelligent device for tea processing, the technical solution of which is as follows:

[0045] An intelligent tea processing device includes a frame 1 and a control cabinet 20. The control cabinet 20 is located on one side of the frame 1. A feeding ladder 2 is provided on one end of the frame 1. A feeding port 28 is provided on the top of the frame 1 near the feeding ladder 2. A buffer box 3 is fixedly installed below the feeding port 28. A first conveyor belt 18 is provided inside the frame 1. The first conveyor belt 18 is located below the buffer box 3. One end of the first conveyor belt 18 is located directly below the buffer box 3. A second conveyor belt 19 is provided on the feeding ladder 2. Multiple infrared lights 11 are fixedly installed inside the frame 1. An automatic sealing device is provided on the buffer box 3.

[0046] A vacuum pump 5 is fixedly installed on the top wall of the frame 1. The input end of the vacuum pump 5 is connected to the inside of the frame 1. A discharge port is provided at the bottom of the frame 1 away from the feeding ladder 2. A receiving box 16 is provided at the discharge port. The control cabinet 20 uses a PLC controller for intelligent control.

[0047] To ensure continuous and uninterrupted drying of tea, existing tea production equipment uses chain plate dryers, which dry the tea leaves by blowing high-temperature hot air onto the surface. However, research and experiments have shown that low-temperature negative pressure drying is more effective than other drying methods. But existing equipment using low-temperature negative pressure drying can only use a drawer type, which requires interrupting the drying operation, cannot feed continuously, has low processing continuity, and low production efficiency.

[0048] Therefore, in the specific embodiment of the present invention: after the tea leaves are processed in the previous step, they are transported by a conveyor to the feeding elevator 2. The feeding elevator 2 is automatically controlled by the control cabinet 20 to transport the tea leaves to the inlet 28. The tea leaves enter the buffer box 3, and then fall onto the conveyor belt 18. The operating speed of the conveyor belt 18, the internal pressure of the frame 1, and the heating temperature are manually set in the control cabinet 20. The internal pressure of the frame 1 is less than atmospheric pressure, and the heating temperature of the infrared lamp 11 is set between 30°C and 95°C.

[0049] Specifically, such as Figure 2 As shown, the feed inlet 28 is connected to the feed elevator 2. One end of the feed elevator 2 extends into the feed inlet 28. The feed elevator 2 is automatically controlled by the control cabinet 20. The feed elevator 2 is equipped with an automatic conveyor mechanism for transporting tea leaves. The tea leaves enter the feed inlet 28 through the feed elevator 2, fall onto the conveyor belt 18 after passing through the buffer box 3, and are heated by multiple infrared lamps 11. The running time of the conveyor belt 18 is controlled by the control cabinet 20. Its running speed and length are matched to form the tea leaf heating time. The vacuum pump 5 sucks away the air in the frame 1 to generate negative pressure. After the tea leaves fall into the receiving box 16, they are no longer affected by the irradiation heating and negative pressure. The transportation time of the tea leaves on the conveyor belt 18 is the tea leaf negative pressure time and heating time. The infrared lamps 11 generate an adjustable temperature range of 30℃ to 95℃.

[0050] A pressure sensor 27 is fixedly installed on the top wall inside the frame 1. A temperature sensor 25 is provided on the surface of the conveyor belt 18. A PLC controller is provided inside the control cabinet 20. The control cabinet 20 is connected to the pressure sensor 27, the vacuum pump 5, the infrared lamp 11, and the conveyor belt 18 through wires.

[0051] Preferably, the PLC controller adjusts the heating power of the infrared lamp 11 according to the temperature value of the temperature sensor 25, adjusts the output power of the vacuum pump 5 according to the value reflected by the pressure sensor 27, and adjusts the running speed of the conveyor belt 18 according to the values ​​sensed by the pressure sensor 27 and the temperature sensor 25.

[0052] Specifically, when the pressure value detected by the pressure sensor 27 deviates from the set pressure value, the PLC controller adjusts the running speed of the conveyor belt 18 to adaptively adjust the negative pressure time and adjusts the output power of the vacuum pump 5 to correct the internal pressure of the frame 1. When the temperature value sensed by the temperature sensor 25 deviates from the set temperature value, the PLC controller automatically adjusts the running speed of the conveyor belt 18 to adaptively adjust the heating time and adjusts the output power of the infrared lamp 11 to compensate for the temperature.

[0053] like Figure 4 As shown, the buffer box 3 includes a first cavity 301, a second cavity 302, and an automatic sealing device. The automatic sealing device includes a support frame 26, a motor 4, a first sealing plate 30, and a second sealing plate 31. There are two support frames 26, which are symmetrically fixedly installed on the side wall of the buffer box 3 in the vertical direction. There are two motors 4, which are respectively fixedly installed on the support frames 26. The buffer box 3 has two sliding grooves, and the first sealing plate 30 and the second sealing plate 31 are slidably installed in the two sliding grooves. A gear 17 is fixedly installed at the output end of each motor 4. A rack 24 that meshes with the gear 17 is fixedly connected to the side wall of the first sealing plate 30 and the second sealing plate 31. The motor 4 is electrically connected to the control cabinet 20 through wires.

[0054] The specific control of automatic box sealing involves two steps: ① The first cavity 301 is used for feeding and the second cavity 302 is used for storing tea. When the first cavity 301 is full of tea, the sealing plate 30 moves to a position that completely seals the first cavity 301, isolating the first cavity 301 from the outside air of the frame 1. The sealing plate 31 moves towards the second cavity 302 to completely seal the bottom of the second cavity 302, isolating the second cavity 302 from the inside of the frame 1, thus completely isolating the inside of the frame 1 from the outside. A small opening is left at the bottom of the first cavity 301 to allow the tea leaves inside the first cavity 301 to fall onto the conveyor belt 18. At this time, the sealing plate 30 leaves a large opening at the top of the second cavity 302, allowing the tea leaves transported by the feeding elevator 2 to enter the second cavity 302 for buffering.

[0055] The specific control cabinet 20 controls the small opening width of the cavity 301, which is between 0.5 and 5 cm. It automatically adjusts the width of the small opening according to the running speed of the conveyor belt 18, the pressure value inside the frame 1, and the heating temperature, so as to control the thickness of the tea leaves falling onto the conveyor belt 18.

[0056] like Figure 2 As shown, there are three conveyor belts 18, which are arranged vertically at intervals and staggered to form a serpentine path. The middle conveyor belt 18 runs in the opposite direction to the other two conveyor belts 18, but at the same speed. Multiple infrared lights 11 are arranged in multiple rows at intervals, and the multiple rows of infrared lights 11 are symmetrically arranged on the upper and lower sides of the conveyor belt 18. Each conveyor belt 18 is equipped with a feeding plate 12, which has multiple light-transmitting holes 13. The multiple light-transmitting holes 13 are arranged at intervals and staggered.

[0057] To meet the requirements of negative pressure drying time for tea, three conveyor belts 18 are set vertically and staggered to ensure that the tea raw materials on each conveyor belt 18 can be transported closely without increasing the length of the conveyor belt 18. After negative pressure drying, the tea leaves fall into the receiving box 16 via the conveyor belt 18 for manual collection. The bottom of the discharge port is provided with a sliding groove 23, and the top of the receiving box 16 is slidably installed in the sliding groove 23. The connection between the receiving box 16 and the sliding groove 23 is fitted with a sealing ring 7, which allows the receiving box 16 to be moved out manually. The sealing ring 7 ensures both movement and good airtightness.

[0058] Working principle: Low-temperature negative pressure drying technology causes the internal moisture of tea leaves to vaporize rapidly after being heated. There is a pressure difference between the inside and the surface of the tea leaves. The internal moisture is transferred to the surface by the pressure gradient and forms steam when heated. It enters the surrounding environment and is then drawn away by the vacuum pump 5. A buffer box 3 is set up at the feed inlet 28 so that the tea leaves enter the buffer box 3 and are isolated from the outside before entering the machine frame 1. The buffer box 3 is set up with two chambers that operate alternately. When the first chamber 301 discharges, the second chamber 302 feeds, and when the first chamber 301 feeds, the second chamber 302 discharges, so that the inside of the machine frame 1 is always isolated from the outside air, but can continuously and uninterruptedly feed.

[0059] Example 2

[0060] After the dried tea leaves are manually removed, they will come into contact with the outside air again as they are carried to the next process. If the air is humid, the tea leaves will be soaked again, affecting the drying effect.

[0061] like Figure 1 , Figure 3 , Figure 8As shown, a sleeve 15 is fixedly installed on the outer wall of the frame 1, a slide rod 10 is slidably installed on the sleeve 15, an air pump 8 is fixedly installed on the bottom wall of the slide rod 10 away from the sleeve 15, a discharge hopper 9 is fixedly installed on the bottom wall of the slide rod 10, the discharge hopper 9 is located on one side of the air pump 8, the output end of the air pump 8 is connected to the inside of the discharge hopper 9, a telescopic pipe 14 is fixedly connected to the side wall of the discharge hopper 9, the end of the telescopic pipe 14 away from the discharge hopper 9 is connected to the inside of the receiving box 16, and a guide port 21 is fixedly connected to the bottom wall of the discharge hopper 9.

[0062] Specifically, after the tea leaves are dried, they fall into the receiving box 16. The tea leaves need to be taken away and placed in the kneading equipment or other processes for further processing. At this time, the operator can manually hold the slide bar 10 to move the guide port 21 to the corresponding equipment inlet. The operator presses the button to start the vacuum pump 8 and open the solenoid valve 22. The vacuum pump 8 draws air to create a pressure difference. The tea leaves are pumped to the discharge hopper 9 through the telescopic tube 14. After being buffered and slowed down by the baffle net 6 in the discharge hopper 9, the tea leaves fall to the guide port 21 so that they can fall smoothly into the kneading equipment or other processing equipment.

[0063] The vacuum pump 5 is equipped with an internal moisture filtration structure, which reduces the humidity of the air pumped into the frame 1 when the vacuum pump 5 performs pressure compensation, thereby reducing the impact of air on the drying effect of tea. The humidity of the air inside the frame 1 is much greater than that of the outside air, so when the air pump 8 pumps air, the humidity of the air that pushes the tea leaves to move in the telescopic tube 14 is much lower than that of the outside air, and will not cause secondary wetting of the tea leaves.

[0064] Working principle:

[0065] The air pump 5 draws air to create a pressure difference, and the tea leaves in the receiving box 16 are pushed by the gas to move towards the telescopic tube 14 and fall to the designated position to complete the movement, reducing contact with the outside air.

[0066] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent equipment for tea processing, comprising a frame (1) and a control cabinet (20), wherein the control cabinet (20) is disposed on one side of the frame (1), characterized in that: The frame (1) is provided with a feeding ladder (2) at one end. The top of the frame (1) near the feeding ladder (2) is provided with a feeding port (28). A buffer box (3) is fixedly installed below the feeding port (28). A first conveyor belt (18) is provided inside the frame (1). The first conveyor belt (18) is located below the buffer box (3). One end of the first conveyor belt (18) is located directly below the buffer box (3). A second conveyor belt (19) is provided on the feeding ladder (2). Multiple infrared lamps (11) are fixedly installed inside the frame (1). An automatic sealing device is provided on the buffer box (3). A vacuum pump (5) is fixedly installed on the top wall of the frame (1). The input end of the vacuum pump (5) is connected to the inside of the frame (1). The bottom of the frame (1) is provided with a discharge port at the end away from the feeding ladder (2). A receiving box (16) is provided at the discharge port. The control cabinet (20) is intelligently controlled by a PLC controller. The buffer box (3) includes a cavity one (301), a cavity two (302), and an automatic sealing device. The automatic sealing device includes a support frame (26), a motor (4), a sealing plate one (30), and a sealing plate two (31). There are two support frames (26), which are symmetrically fixedly installed on the side wall of the buffer box (3) in the vertical direction. There are two motors (4), which are respectively fixedly installed on the support frame (26). There are two sliding grooves on the buffer box (3). The sealing plate one (30) and the sealing plate two (31) are respectively slidably installed in the two sliding grooves. A gear (17) is fixedly installed at the output end of each motor (4). A rack (24) that meshes with the gear (17) is fixedly connected to the side wall of the sealing plate one (30) and the sealing plate two (31). The motor (4) is electrically connected to the control cabinet (20) through a wire. There are three conveyor belts (18). The three conveyor belts (18) are arranged vertically at intervals and staggered to form a serpentine route. The conveyor belt (18) in the middle position runs in the opposite direction to the other two conveyor belts (18) and runs at the same speed.

2. The intelligent equipment for tea processing according to claim 1, characterized in that: Multiple infrared lamps (11) are arranged in multiple rows at intervals. The multiple rows of infrared lamps (11) are symmetrically arranged on the upper and lower sides of the first conveyor belt (18). Each first conveyor belt (18) is provided with a feeding plate (12). The feeding plate (12) has multiple light-transmitting holes (13). The multiple light-transmitting holes (13) are arranged at intervals and staggered.

3. The intelligent equipment for tea processing according to claim 1, characterized in that: A sleeve (15) is fixedly installed on the outer wall of the frame (1). A slide rod (10) is slidably installed on the sleeve (15). An air pump (8) is fixedly installed on the bottom wall of the slide rod (10) away from the sleeve (15). A discharge hopper (9) is fixedly installed on the bottom wall of the slide rod (10). The discharge hopper (9) is located on one side of the air pump (8). The output end of the air pump (8) is connected to the inside of the discharge hopper (9). A telescopic pipe (14) is fixedly connected to the side wall of the discharge hopper (9). The end of the telescopic pipe (14) away from the discharge hopper (9) is connected to the inside of the receiving box (16). A guide port (21) is fixedly connected to the bottom wall of the discharge hopper (9). A solenoid valve (22) is provided at the connection between the receiving box (16) and the telescopic pipe (14), and the solenoid valve (22) is electrically connected to the control cabinet (20).

4. The intelligent equipment for tea processing according to claim 3, characterized in that: The bottom of the discharge port is provided with a sliding groove (23), the top of the receiving box (16) is slidably installed in the sliding groove (23), and a sealing ring (7) is fitted at the connection between the receiving box (16) and the sliding groove (23).

5. The intelligent equipment for tea processing according to claim 2, characterized in that: A pressure sensor (27) is fixedly installed on the top wall inside the frame (1), and a temperature sensor (25) is provided on the surface of the first conveyor belt (18). The control cabinet (20) is connected to the pressure sensor (27), vacuum pump (5), infrared lamp (11), and first conveyor belt (18) respectively by wires.

6. The intelligent equipment for tea processing according to claim 5, characterized in that: The PLC controller adjusts the heating power of the infrared lamp (11) according to the temperature value of the temperature sensor (25), the PLC controller adjusts the output power of the vacuum pump (5) according to the value reflected by the pressure sensor (27), and the PLC controller adjusts the running speed of the conveyor belt (18) according to the values ​​sensed by the pressure sensor (27) and the temperature sensor (25).

Images