A tea withering device having a conveying mechanism

Abstract

The application discloses a tea withering device with a conveying mechanism and relates to the field of tea withering and drying devices. The device comprises a withering machine box, a conveying belt and a chain belt conveyor arranged in the withering channel. The withering machine box is internally provided with a withering channel, which is divided into two end channels and a middle channel that are in communication with each other. The two end channels are arranged obliquely and are in communication with the end of the middle channel. The device can realize the purpose of pipeline withering of tea, withering of tea in the process of continuous conveying on the conveying mechanism, instead of the traditional mode of withering of tea placed in a fixed position. Based on the design of the two end channels and the middle channel in the withering channel, when the tea in the tea box is withered in the withering channel, the generated water vapor can be discharged upwards, avoiding the phenomenon that the water vapor is easily discharged from the two ends of the withering channel to wet the tea again.

Description

Technical Field

[0001] This invention relates to the field of tea withering and drying equipment, and particularly to a tea withering device with a conveying mechanism. Background Technology

[0002] In traditional tea processing, withering is a crucial step that directly affects the quality and taste of the tea.

[0003] Traditional withering methods mainly include two types: natural withering and artificial withering.

[0004] Natural withering depends on the natural environment and is greatly affected by weather and season. The withering time is difficult to control, resulting in unstable tea quality.

[0005] Artificial withering requires a lot of manpower and time, is inefficient, and is difficult to achieve on a large scale.

[0006] In addition, traditional withering equipment is usually static and cannot achieve continuous withering of tea leaves during transportation, which is not conducive to large-scale industrial production.

[0007] Existing technologies, such as the tea withering and processing machine disclosed in CN114145366A, have a simple structure and have solved the technical problem of automated tea withering production. However, when the tea is withered by a multi-layer mesh belt conveyor, the tea in the upper layer is easily moistened again when the moisture is discharged, which reduces the withering efficiency of the tea.

[0008] In addition, traditional techniques also involve using a conveyor line to transport tea leaves to a withering machine for withering. Although the tea leaves are spread out on the conveyor line, withering via the conveyor line generally requires rapid withering in a short period of time. Therefore, the temperature in the withering machine needs to be kept high and cannot be lost quickly. As a result, the moisture generated after the tea leaves wither is generally discharged from the inlet or outlet of the withering machine. This discharge method can easily cause secondary wetting of the tea leaves at the inlet or outlet.

[0009] Therefore, it is necessary to propose a tea withering device with a conveying mechanism to solve the above problems. Summary of the Invention

[0010] The purpose of this invention is to provide a tea withering device with a conveying mechanism to solve the problem that tea leaves are easily wetted again when withering tea leaves quickly through traditional conveyor lines or conveyor belts.

[0011] To achieve the above objectives, the present invention provides the following technical solution: a tea withering device with a conveying mechanism, comprising:

[0012] The wilting machine housing has wilting channels inside. The two ends of the wilting channels pass through both sides of the wilting machine housing. The wilting channels are divided into two interconnected channels and a middle channel. The two channels are inclined and connected to the end of the middle channel. The ends of the two channels away from the middle channel are inclined downwards, while the middle channel is horizontally distributed.

[0013] The conveyor belt is installed inside the withering channel, and the conveyor belt is laid along the track of the withering channel, with both ends of the conveyor belt extending to the outside of the withering machine box;

[0014] The chain conveyor is connected to the end of the conveyor belt. Both the chain conveyor and the conveyor belt are used to transport tea boxes containing tea leaves. The tea leaves in the tea boxes are spread out in a single layer. When the conveyor belt transports the tea boxes to the withering channel for withering, the tea boxes move sequentially uphill, horizontal, and downhill and are transported to the chain conveyor on the other side of the withering machine box.

[0015] The lower end of the withering machine box has a cavity inside, and a partition is fixedly installed in the middle of the cavity. The middle part of the partition is a tapered shape that tapers upwards. A converging port is provided in the middle of the partition. A mixing chamber and a heating chamber are respectively provided above and below the partition. The converging port connects the mixing chamber and the heating chamber. An electric heating plate is installed in the heating chamber.

[0016] A hot air channel is provided on the upper inner wall of the mixing chamber. The upper end of the hot air channel is connected to the interior of the withering channel. Multiple hot air channels are provided and distributed at equal distances. Solenoid valves are also provided in the hot air channels.

[0017] Preferably, the upper end of the wilting machine casing is provided with an exhaust chamber, one side of the exhaust chamber is connected to an exhaust channel, the exhaust channel is connected to a plurality of exhaust holes, the lower end of the exhaust holes is connected to the upper part of the middle channel, and an air intake is provided on the other side of the exhaust chamber, extending to the outside of the wilting machine casing, and an electric fan for air intake is installed in the air intake.

[0018] Preferably, a first temperature sensor is installed on the inner wall of the withering channel, and multiple first temperature sensors are provided, which are distributed at equal distances along the trajectory direction of the withering channel.

[0019] A second temperature sensor is installed on the inner wall of the mixing chamber. Multiple second temperature sensors are arranged at equal distances.

[0020] Preferably, the tea box is provided with an inlet / outlet hole, and a limiting baffle is fixedly provided at the upper end of the tea box. A tea baffle is provided on one side of the limiting baffle. One end of the tea baffle is rotatably connected to the upper surface of the tea box. The tea baffle is horizontally attached to the upper surface of the tea box, and the end of the tea baffle away from the limiting baffle extends to directly above the slot of the tea box.

[0021] Preferably, the surface of the conveyor belt is fixedly provided with elastic columns, and multiple elastic columns are provided. The multiple elastic columns are distributed at equal intervals, and the upper end of the elastic column is integrally provided with an elastic protrusion. The diameter of the elastic protrusion is smaller than the diameter of the elastic column.

[0022] Preferably, a magnet is fixedly installed on the inner wall of the withering channel. Multiple magnets are installed, and the magnets are distributed at equal distances and located inside the conveyor belt.

[0023] The tea box is made of stainless steel that is attracted by a magnet.

[0024] The technical effects and advantages of this invention are as follows:

[0025] This invention enables the withering of tea leaves on an assembly line, allowing the tea leaves to wither continuously while being transported on a conveyor mechanism. This replaces the traditional method of placing the tea leaves in a fixed position for withering. Furthermore, based on the design of the two end channels and the middle channel in the withering channel, the water vapor generated when the tea leaves in the tea box are withered in the withering channel can be discharged upwards, avoiding the phenomenon that water vapor can easily re-wet the tea leaves due to being discharged from both ends of the withering channel.

[0026] This invention adopts an assembly line operation method, in which tea leaves are withered during the transportation process, which greatly improves space utilization and reduces the floor space. The withering machine box has a reasonable structural design, making the overall equipment more compact and suitable for use in limited spaces.

[0027] This invention ensures that tea leaves are withered under optimal conditions, thereby improving the quality and taste of the tea. Hot air is mixed evenly in the mixing chamber before being used for withering the tea leaves, which ensures that the tea leaves are heated evenly and maintains a high withering quality.

[0028] This invention effectively removes moisture generated during the withering process by setting up exhaust holes, exhaust channels, and exhaust chambers, preventing moisture accumulation that could cause the tea leaves to become damp. At the same time, the suction effect of the electric fan removes moisture from the outside of the equipment, ensuring a dry environment inside the withering channel.

[0029] The tea box is made of stainless steel and can be attracted by magnets to ensure stability during transportation. The tea box is equipped with inlet and outlet holes, limit baffles, and tea baffles to effectively prevent tea leaves from falling off during transportation and to facilitate the pouring out of tea leaves without residue, thus improving the convenience of operation. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the tea withering device with a conveying mechanism according to the present invention.

[0031] Figure 2 This is a schematic diagram of the internal structure of the withering machine casing of the present invention.

[0032] Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0033] Figure 4 This is a schematic diagram of the tea box structure of the present invention.

[0034] Figure 5 This is a schematic diagram of the chain conveyor structure of the present invention.

[0035] Figure 6 This is a schematic diagram of the tea box of the present invention when it is tilted and oscillating.

[0036] In the diagram: 1. Withering machine housing; 2. Chain conveyor; 3. Withering channel; 4. Conveyor belt; 5. Tea box; 6. Exhaust vent; 7. Exhaust channel; 8. Electric fan; 9. Air intake; 10. Exhaust chamber; 11. Drain outlet; 12. Elastic curtain; 13. Mixing chamber; 14. Converging port; 15. Heating chamber; 16. Electric heating plate; 17. First temperature sensor; 18. Hot air channel; 19. Second temperature sensor; 20. Partition; 21. One-way valve; 22. Magnet; 23. Elastic column; 24. Solenoid valve; 25. Inlet / outlet port; 26. Limiting baffle; 27. Tea baffle; 28. Elastic protrusion; 29. ​​Chain belt; 30. Side base plate; 31. Positioning hole; 32. Clamping screw; 33. Side support frame; 34. Splicing rod; 35. Side guard; 36. Support leg. Detailed Implementation

[0037] This invention provides, for example Figures 1-6 The tea withering device shown is a conveying mechanism that enables the withering of tea leaves on an assembly line. The tea leaves are withered while being continuously conveyed on the conveying mechanism, which replaces the traditional method of placing the tea leaves in a tea withering machine or a tea fixing machine for withering. This allows for continuous withering operations and improves processing efficiency.

[0038] Furthermore, in order to address the issue that when tea leaves are withered using a multi-layer mesh belt conveyor, the tea leaves on the upper layer are easily moistened again during moisture discharge, thus reducing the withering efficiency of the tea leaves, a solution was developed.

[0039] refer to Figure 1 and Figure 2 As shown, the tea withering device with a conveying mechanism includes a withering machine box 1 and a chain conveyor 2. The withering machine box 1 is provided with a withering channel 3. The two ends of the withering channel 3 pass through the two sides of the withering machine box 1 respectively. The withering channel 3 is divided into two interconnected channels and a middle channel. The two channels are inclined and connected to the end of the middle channel. The end of the two channels away from the middle channel is inclined downward, and the middle channel is horizontally distributed.

[0040] A conveyor belt 4 is installed in the withering channel 3. The conveyor belt 4 is laid along the track of the withering channel 3, and both ends of the conveyor belt 4 extend to the outside of the withering machine box 1. A chain conveyor 2 is installed outside the withering machine box 1. The chain conveyor 2 is connected to the end of the conveyor belt 4. Both the chain conveyor 2 and the conveyor belt 4 are used to transport tea boxes 5, which contain tea leaves. When the conveyor belt 4 transports the tea boxes 5 to the withering channel 3 for withering, the tea boxes 5 move uphill, horizontally, and downhill in sequence and are transported to the chain conveyor 2 on the other side of the withering machine box 1, realizing the purpose of continuous operation. When the tea leaves in the tea boxes 5 are withered in the withering channel 3, the water vapor generated can be discharged upwards, avoiding the phenomenon that water vapor is discharged from both ends of the withering channel 3 and easily wets the tea leaves again.

[0041] An exhaust chamber 10 is provided inside the upper part of the withering machine box 1. An exhaust channel 7 is provided on one side of the exhaust chamber 10. Multiple exhaust holes 6 are provided on the exhaust channel 7. The lower end of the exhaust holes 6 is connected to the upper part of the middle channel. An air intake 9 is provided on the other side of the exhaust chamber 10, which extends to the outside of the withering machine box 1. An electric fan 8 for suction is installed in the air intake 9. When the electric fan 8 is started, the water vapor generated during the withering process of tea leaves can be sucked to the outside of the withering machine box 1 through the exhaust holes 6, the exhaust channel 7, the exhaust chamber 10, and the air intake 9 in sequence, thus avoiding the phenomenon of water vapor being discharged from the two end channels.

[0042] In actual use, the exhaust channel 7 can be arranged at an angle, and the end of the exhaust channel 7 connected to the exhaust chamber 10 is inclined downwards, which can drain the water droplets condensed in the exhaust channel 7 into the lower end of the exhaust chamber 10 for collection, thus preventing water droplets from dripping onto the tea leaves. The lower end of the exhaust chamber 10 is also provided with a drain outlet 11, and a drain valve is installed on the drain outlet 11. The drain valve is located on the back of the withering machine box 1. The collected condensate can be discharged by opening the drain valve periodically.

[0043] The present invention uses an electric fan 8 to draw in air and remove moisture, which can reduce the impact of wind on tea leaves and prevent the tea leaves from being blown away or damaged, replacing the traditional method of blowing air to remove moisture.

[0044] refer to Figure 3 As shown, a one-way valve 21 is also installed in the exhaust port 6. The one-way valve 21 allows water vapor to be discharged into the exhaust port 6 in one direction without backflow.

[0045] refer to Figures 1 to 3 As shown, a cavity is provided inside the lower end of the withering machine housing 1. A partition 20 is fixedly installed in the middle of the cavity. The middle part of the partition 20 is a tapered shape that tapers upwards. A converging port 14 is provided in the middle of the partition 20. A mixing chamber 13 and a heating chamber 15 are respectively provided above and below the partition 20. The converging port 14 connects the mixing chamber 13 and the heating chamber 15. An electric heating plate 16 is installed in the heating chamber 15. When the electric heating plate 16 is started, it can heat the air in the heating chamber 15. The heated air is gathered through the middle of the partition 20 and discharged into the mixing chamber 13 through the converging port 14.

[0046] A hot air channel 18 is provided on the upper inner wall of the mixing chamber 13. The upper end of the hot air channel 18 is connected to the interior of the withering channel 3. Multiple hot air channels 18 are provided and distributed at equal distances. A solenoid valve 24 is also provided in the hot air channel 18. After the heated air is drawn into the mixing chamber 13, it is mixed evenly to a certain extent. After the solenoid valve 24 is opened, the hot air in the mixing chamber 13 can be discharged into the withering channel 3, thereby withering the tea in the tea box 5. The hot air is mixed evenly in the mixing chamber 13 before being used for the withering of the tea, which can make the tea evenly heated and maintain a high withering quality.

[0047] It should be noted that the longer the air stays in the mixing chamber 13, the more evenly the heat is mixed, thus making the tea leaves wither more thoroughly.

[0048] Furthermore, in this invention, the electric fan 8 is combined with the electric heating plate 16. When the electric fan 8 is started, it not only sucks out the water vapor generated during the withering process of the tea leaves, but also extracts the hot air from the mixing chamber 13, so that the hot air is discharged through the hot air channel 18 and evenly acts on the tea leaves in the tea box 5. The tea leaves in the tea box 5 are spread out in a single layer to ensure that the tea leaves lose water evenly.

[0049] It should also be noted that a one-way air intake valve is also provided on the back of the withering machine housing 1. The one-way air intake valve is connected to the interior of the heating chamber 15 and can supply air to the heating chamber 15, so that hot air can be continuously generated in the heating chamber 15. The one-way air intake valve is not shown in the figure and is a conventional technology, so it will not be described in detail here.

[0050] Considering that the temperature difference of the hot air in each section of the space cannot be precisely controlled during the withering process of tea leaves in the withering channel 3, which can easily lead to poor withering quality of tea leaves, this invention also installs a first temperature sensor 17 on the inner wall of the withering channel 3. Multiple first temperature sensors 17 are provided and are distributed at equal distances along the trajectory direction of the withering channel 3. Multiple second temperature sensors 19 are installed on the inner wall of the mixing chamber 13 and are distributed at equal distances. The second temperature sensors 19 can be used to monitor the air temperature near the hot air channel 18 at the corresponding position, and the multiple first temperature sensors 17 can be used to monitor the air temperature in different sections of the withering channel 3.

[0051] Under normal operation, the temperature difference monitored by multiple first temperature sensors 17 usually does not exceed ±0.5 degrees Celsius. If the temperature difference is too large, it will affect the overall quality of tea withering. Similarly, the temperature difference monitored by multiple second temperature sensors 19 will not exceed ±0.5 degrees Celsius. However, in actual operation, uneven temperature distribution is prone to occur due to external factors. Therefore, the setting of first temperature sensors 17 and second temperature sensors 19 can enable the air temperature in the withering channel 3 to self-regulate, thereby reducing the air temperature difference in the withering channel 3 and improving the overall quality of tea withering.

[0052] In actual operation, if the temperature detected by one of the second temperature sensors 19 is greater than ±0.5 degrees Celsius from the temperature detected by the other second temperature sensors 19, it indicates that the temperature distribution in the mixing chamber 13 is uneven. At this time, the corresponding solenoid valve 24 can be closed so that air with a temperature exceeding the set range no longer enters the withering channel 3, thus avoiding over-withering of the tea leaves. However, it should be noted that the conveying speed of the conveyor belt 4 can be appropriately reduced according to the number of solenoid valves 24 closed, so that the tea leaves can wither in the withering channel 3 for a sufficient amount of time.

[0053] If the temperature detected by one of the first temperature sensors 17 is greater than ±0.5 degrees Celsius from the temperature detected by the other first temperature sensors 17, it indicates that the temperature distribution in the withering channel 3 is uneven. At this time, the solenoid valve 24 at the corresponding position can be closed so that hot air no longer enters the withering channel 3, thus preventing the hot air temperature in the withering channel 3 from continuously increasing and causing excessive withering of the tea leaves. Alternatively, the rotation speed of the electric fan 8 can be increased so that the overheated air is quickly sucked out.

[0054] In this invention, the speed of the conveyor belt 4, the opening timing of the solenoid valve 24, the temperature feedback monitored by the first temperature sensor 17 and the second temperature sensor 19, and the running speed of the air intake 9 can be connected and controlled by a control chip. Specifically, the input terminal of the control chip can be connected to the output terminals of the first temperature sensor 17 and the second temperature sensor 19, and the output terminal of the control chip can be connected to the input terminal of the motor that controls the running speed of the conveyor belt 4, the motor that controls the rotation speed of the electric fan 8, and the solenoid valve 24 to achieve control.

[0055] refer to Figure 4 As shown, the tea box 5 in this invention has a box structure with an inlet / outlet hole 25. Multiple elastic columns 23 are fixedly arranged on the surface of the conveyor belt 4, distributed at equal intervals. An elastic protrusion 28 is integrally formed at the upper end of each elastic column 23. The diameter of the elastic protrusion 28 is smaller than the diameter of the elastic column 23. When the tea box 5 is placed on the conveyor belt 4, the corners of the tea box 5 can fit precisely at the connection between the corresponding elastic protrusion 28 and the elastic column 23, achieving a limiting position and preventing the tea box 5 from shifting or sliding on the conveyor belt 4. Furthermore, the damping between the tea box 5 and the elastic column 23 is relatively large, preventing the tea box 5 from sliding during its up-and-down movement.

[0056] A limiting baffle 26 is fixedly installed at the upper end of the tea box 5. A tea baffle 27 is provided on one side of the limiting baffle 26. One end of the tea baffle 27 is rotatably connected to the upper surface of the tea box 5. The tea baffle 27 is horizontally attached to the upper surface of the tea box 5, and the end of the tea baffle 27 away from the limiting baffle 26 extends directly above the slot of the tea box 5. The tea baffle 27 is used to block the tea in the tea box 5 and prevent the tea from falling off the top of the tea box 5 during the conveying process. When the tea in the tea box 5 needs to be poured out, the tea baffle 27 can rotate by its own weight when the tea box 5 is tilted or flipped, so as to avoid blocking the slot above the tea box 5. There is no residue when the tea is poured out. Due to the limitation of the limiting baffle 26, the maximum rotation angle of the tea baffle 27 is ninety degrees. When the tea box 5 is placed upright, the tea baffle 27 can automatically reset and be reused.

[0057] refer to Figure 3 and Figure 6As shown, magnets 22 are fixedly installed on the inner wall of the withering channel 3. Multiple magnets 22 are arranged at equal distances and are located inside the conveyor belt 4. The tea box 5 is made of stainless steel that can be attracted by magnets. When the tea box 5 is transported by the conveyor belt 4 and passes over the magnets 22, the tea box 5 can compress the elastic column 23 to a certain extent and tilt due to the attraction of the magnets 22. After passing the magnets 22, the tea box 5 returns to its original position. During the process of being transported by the conveyor belt 4, the tea box 5 passes through multiple magnets 22 in sequence and can undergo multiple tilting and resetting, so that hot air and water vapor can enter and exit the tea box 5 more fully, and the water vapor between the tea leaves can be shaken out more quickly, thereby improving the withering efficiency of the tea.

[0058] refer to Figure 1 and Figure 5 As shown in the figure, the present invention also discloses a chain conveyor 2. Multiple chain conveyors 2 can be spliced ​​together to facilitate the continuous conveying of tea leaves. The chain conveyor 2 includes support legs 36, side base plates 30, a chain belt 29, and side guards 35. The side base plates 30 are fixedly installed on the upper end of the support legs 36. The chain belt 29 is disposed on the side base plates 30. One end of the side base plates 30 is provided with a motor, chain belt drive shaft, etc., for driving the chain belt 29. A side support frame 33 is also fixedly disposed on the side of the side base plates 30. The upper end of the support frame 33 is provided with a clamping screw 32 and a positioning hole 31. A splicing rod 34 is fixedly connected to the side flange 35. The splicing rod 34 moves through the positioning hole 31. The clamping screw 32 is connected to the side support frame 33 by threaded engagement. The end of the clamping screw 32 moves and presses against the side of the splicing rod 34 inside the positioning hole 31 to fix the side flange 35. The side flange 35 is used to prevent the tea box 5 transported on the chain belt 29 from falling off. This is a common existing technology and will not be described in detail here.

[0059] refer to Figure 1 As shown, an elastic curtain 12 is also provided in the withering channel 3 to prevent external debris from entering the withering channel 3, and at the same time to reduce the loss of hot air in the withering channel 3.

[0060] In the art, the withering of tea leaves is generally controlled at "25°C to 35°C" for "30 minutes to 1 hour" and the thickness of the spread leaves is generally "8cm to 12cm". However, in this invention, the thickness of the spread leaves is 1-2cm, and the temperature is controlled at 40°C to 45°C, so the time can generally be shortened to 5-10 minutes. (At the highest temperature of 45°C, the tea polyphenols and catechins in the tea leaves will not be excessively oxidized, vitamin C will not be decomposed in large quantities, aromatic substances will not evaporate excessively, and active enzymes will not deteriorate. Moreover, it will increase the color and mellowness of the tea soup; reduce the bitterness of the tea soup and improve the taste; increase the components with floral and fruity aromas such as alcohols, ketones and esters; and promote the oxidation and transformation of tea polyphenols.)

[0061] In actual processing, technicians will adjust the specific temperature and time according to the type of tea. For example, oolong tea is usually withered at around 35°C for 15-20 minutes, but with the temperature of 40°C to 45°C in this invention, the time can be shortened to less than 5 minutes. Black tea is usually withered at 34°C to 36°C for 1 to 2 hours, but with the temperature of 40°C to 45°C in this invention, the time can be controlled between 10-15 minutes.

Claims

1. A tea withering device with a conveying mechanism, characterized in that, include: Withering machine box (1), withering channel (3) is provided inside the withering machine box (1). The two ends of the withering channel (3) pass through the two sides of the withering machine box (1) respectively. The withering channel (3) is divided into two interconnected channels and a middle channel. The two channels are inclined and connected to the end of the middle channel. The end of the two channels away from the middle channel is inclined downward, and the middle channel is horizontally distributed. The conveyor belt (4) is installed inside the withering channel (3). The conveyor belt (4) is laid along the track of the withering channel (3), and both ends of the conveyor belt (4) extend to the outside of the withering machine box (1). Chain conveyor (2), chain conveyor (2) is connected to the end of conveyor belt (4). Both chain conveyor (2) and conveyor belt (4) are used to transport tea box (5). Tea box (5) contains tea. The tea in tea box (5) is spread out in a layer. When conveyor belt (4) transports tea box (5) to withering channel (3) for withering, tea box (5) moves uphill, horizontal and downhill in sequence and is transported to chain conveyor (2) on the other side of withering machine box (1). The lower end of the withering machine box (1) is provided with a cavity. A partition (20) is fixedly provided in the middle of the cavity. The middle part of the partition (20) is a tapered shape that tapers upward. A converging port (14) is provided in the middle of the partition (20). A mixing chamber (13) and a heating chamber (15) are provided above and below the partition (20) respectively. The converging port (14) is connected between the mixing chamber (13) and the heating chamber (15). An electric heating plate (16) is installed in the heating chamber (15). A hot air channel (18) is provided on the upper inner wall of the mixing chamber (13). The upper end of the hot air channel (18) is connected to the interior of the withering channel (3). Multiple hot air channels (18) are provided, and the multiple hot air channels (18) are distributed at equal distances. A solenoid valve (24) is also provided in the hot air channel (18). The upper end of the withering machine box (1) is provided with an exhaust chamber (10). An exhaust channel (7) is provided on one side of the exhaust chamber (10). Multiple exhaust holes (6) are provided on the exhaust channel (7). The lower end of the exhaust hole (6) is connected to the upper part of the middle channel. An air intake (9) is provided on the other side of the exhaust chamber (1) and extends to the outside of the withering machine box (1). An electric fan (8) for air intake is installed in the air intake (9).

2. A tea withering device with a conveying mechanism according to claim 1, characterized in that: A first temperature sensor (17) is installed on the inner wall of the withering channel (3). Multiple first temperature sensors (17) are provided, and the multiple first temperature sensors (17) are distributed at equal distances along the trajectory direction of the withering channel (3). A second temperature sensor (19) is installed on the inner wall of the mixing chamber (13). Multiple second temperature sensors (19) are provided and distributed at equal distances.

3. A tea withering device with a conveying mechanism according to claim 1, characterized in that: The tea box (5) is provided with an inlet / outlet hole (25). A limit baffle (26) is also fixedly provided at the upper end of the tea box (5). A tea baffle (27) is provided on one side of the limit baffle (26). One end of the tea baffle (27) is rotatably connected to the upper surface of the tea box (5). The tea baffle (27) is horizontally attached to the upper surface of the tea box (5), and the end of the tea baffle (27) away from the limit baffle (26) extends to the top of the slot of the tea box (5).

4. A tea withering device with a conveying mechanism according to claim 1, characterized in that: The surface of the conveyor belt (4) is fixedly provided with elastic columns (23), and multiple elastic columns (23) are provided. The multiple elastic columns (23) are distributed at equal distances. An elastic protrusion (28) is integrally provided at the upper end of the elastic column (23). The diameter of the elastic protrusion (28) is smaller than the diameter of the elastic column (23).

5. A tea withering device with a conveying mechanism according to claim 1, characterized in that: Magnets (22) are fixedly installed on the inner wall of the withering channel (3). Multiple magnets (22) are installed, and the multiple magnets (22) are distributed at equal distances. The magnets (22) are located inside the conveyor belt (4). The tea box (5) is made of stainless steel material that is attracted by a magnet.

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