Heat pump circulating air-based multi-stage tea leaf drying device

Abstract

The present invention specifically relates to the technical field of tea production. Disclosed is a heat pump circulating air-based multi-stage tea leaf drying device, comprising a drying oven provided with a feed hopper on the top thereof. Three hollow plates distributed from up to down are arranged in the drying oven, a plurality of hot air holes are formed in the top ends and bottom ends of the hollow plates, and the inner diameters of the hot air holes in the three hollow plates decrease sequentially from top to bottom. According to the present invention, tea leaves are dried with hot air in stages by using a heat pump drying mechanism, each stage of drying may correspond to the drying degree and weight of the tea leaves, and the bottoms and tops of the tea leaves can be dried at the same time, so that relatively uniform drying is achieved; the tea leaves are scraped and moved by means of a scraping mechanism, and the tea leaves can be turned over, so that the drying uniformity and efficiency of the tea leaves are further improved, and a good tea leaf drying effect is achieved; moreover, while using hot air for drying, dust and residues on the tea leaves can be taken away by the hot air, so that the apparatus has high practicability.

Description

A heat pump circulating air segmented tea drying equipment Technical Field

[0001] The invention relates to the technical field of tea production, and in particular to heat pump circulating air segmented tea drying equipment. Background Art

[0002] A heat pump is a device that transfers heat energy from a low-grade heat source to a higher-grade heat source. Unlike the familiar "pump," which increases potential energy, a heat pump typically extracts low-grade heat energy from the air, water, or soil, uses electricity to generate work, and then provides usable, high-grade heat energy. When operating, a heat pump transfers heat energy from the air at the inlet to the air at the outlet. Circulating air from a heat pump can be used to dry tea leaves during production.

[0003] At present, when drying tea leaves in tea production, most of the methods are to directly put the tea leaves into a drying box, and then heat the entire interior of the drying box to dry the tea leaves inside the drying box. For example, the "A segmented drying device for finished tea" with patent number "CN215638645U" uses this drying method. This drying method wastes heat and the tea leaves are prone to pile up, which causes uneven drying of the tea leaves and poor drying effect.

[0004] Therefore, it is necessary to invent a heat pump circulating air segmented tea drying equipment to solve the above problems.

[0005] Summary of the Invention

[0006] The purpose of the present invention is to provide a heat pump circulating air segmented tea drying device, which uses a heat pump drying mechanism to perform segmented hot air drying on the tea leaves. Each drying stage can correspond to the dryness and weight of the tea leaves respectively, and the bottom and top of the tea leaves can be dried simultaneously, so that the drying is more uniform. The scraping mechanism is used to scrape and move the tea leaves, so that the tea leaves can be turned over, further improving the uniformity and efficiency of the tea drying, so that the tea leaves have a better drying effect. At the same time as the hot air drying, the hot air can take away the dust and residue on the tea leaves, so that the practicality of the device is higher, so as to solve the above-mentioned shortcomings in the technology.

[0007] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a heat pump circulating air segmented tea drying equipment, comprising a drying box with a feed trough at the top thereof, the bottom end of the feed trough being connected to the interior of the drying box, three hollow plates distributed up and down are provided inside the drying box, one side of the two hollow plates located above and below is close to one side wall of the interior of the drying box, and one side of the middle hollow plate is close to the other side wall of the interior of the drying box, a plurality of hot air holes are provided at the top and bottom ends of the hollow plates, the internal diameters of the hot air holes on the three hollow plates decrease successively from top to bottom, a filter mesh plate is fixed on the inner wall of the hot air hole, a scraping mechanism is provided on the outer side of the hollow plate, a transmission mechanism is provided on the rear side of the drying box, and a heat pump drying mechanism is provided on one side of the drying box.

[0008] Preferably, the heat pump drying mechanism includes an air source heat pump assembly arranged on one side of the drying box, a hot air frame is fixedly provided with a hot air outlet of the air source heat pump assembly, an air outlet pipe connected to the interior of the hot air frame is fixedly provided at the front end of the hot air frame, a connecting pipe is fixedly provided at one end of the air outlet pipe, three air outlet branch pipes connected to the interior are fixedly provided at the outer end of the connecting pipe, one end of the three air outlet branch pipes respectively pass through the front end of the drying box and the front ends of the three hollow plates and are connected to the interiors of the three hollow plates, a circulation frame connected to the interior of the drying box is fixedly provided at the rear end of the drying box, the circulation frame is arranged on one side of the transmission mechanism, and a circulation pipe connected to the interior of the drying box is fixedly provided at the rear end of the circulation frame, so as to blow hot air onto the tea leaves on the top ends of the three hollow plates, thereby drying the tea leaves with hot air.

[0009] Preferably, the scraping mechanism includes a plurality of first rotating rods arranged inside the drying box, both ends of the first rotating rods are rotatably connected between the front and rear walls of the drying box, the plurality of first rotating rods respectively pass through the two sides of the three hollow plates, and the first rotating rods are rotatably connected to the hollow plates, wherein the rear ends of the three first rotating rods extend to the rear side of the drying box, and the outer ends of each first rotating rod are fixedly provided with two pulleys, and the plurality of pulleys are respectively arranged on the front and rear sides of the three hollow plates, and the two adjacent pulleys on the left and right are connected by belts, and the three air outlet branch pipes respectively pass through the three belts located on the front side, and a plurality of movable scrapers are fixed between the two belts facing each other, the bottom end of the movable scraper located on the upper part of the hollow plate contacts the top end of the hollow plate, and the top end of the movable scraper located at the bottom of the hollow plate contacts the bottom end of the hollow plate, which facilitates the movement of tea leaves and can turn the tea leaves over during the movement, so that the tea leaves are dried more evenly.

[0010] Preferably, the transmission mechanism includes a driven gear fixedly arranged at the rear ends of three first rotating rods, the three driven gears are engaged with each other, a motor is fixedly arranged at the rear end of the drying box, a second rotating rod is fixedly arranged on the output shaft of the motor, one end of the second rotating rod is rotatably connected to the rear end of the drying box, a driving gear is fixedly arranged at the outer end of the second rotating rod, the driving gear is engaged with the driven gear at the top, so as to provide power for the scraping mechanism to move.

[0011] Preferably, the air inlet of the air source heat pump assembly is fixedly provided with a condensing box, the rear end of the condensing box is fixedly provided with an air intake frame connected with the interior thereof, a condensing pipe is provided inside the condensing box, one end of the circulating pipe passes through the top of the condensing box and is fixedly connected to one end of the condensing pipe, the other end of the condensing pipe is fixedly provided with a connecting pipe, the bottom end of the connecting pipe extends to the bottom of the condensing box, a liquid collecting tank is provided on the rear side of the air source heat pump assembly, the bottom end of the connecting pipe passes through the top of the liquid collecting tank and is connected with the interior of the liquid collecting tank, so as to facilitate condensation and recovery of moisture in the dried air.

[0012] Preferably, a dehumidification box connected to the interior of the liquid collecting box is fixedly provided on the top of the rear end of the liquid collecting box, and a mounting frame is provided inside the dehumidification box. The outer end of the mounting frame is in contact with the inner wall of the dehumidification box, and one side of the mounting frame extends to one side of the dehumidification box. Water-absorbing sponges are fixed on the inner wall of the mounting frame, and a handle is fixed on one side of the mounting frame to facilitate the absorption of moisture remaining in the air after condensation, and also to facilitate the removal and replacement of the mounting frame and the water-absorbing sponge from the interior of the dehumidification box.

[0013] Preferably, a return pipe is fixedly provided at the top of the dehumidification box, and the bottom end of the return pipe extends to the inside of the dehumidification box. The bottom end of the return pipe is arranged on the rear side of the mounting frame and the water-absorbing sponge, and the top end of the return pipe passes through the bottom end of the air intake frame and is connected to the inside of the air intake frame, so as to facilitate the return of air to the air inlet of the air source heat pump assembly.

[0014] Preferably, a drainage pipe communicating with the interior of the liquid collecting tank is fixedly provided at the bottom of one side of the liquid collecting tank, and a valve is fixedly provided on the drainage pipe to facilitate the discharge of water collected in the liquid collecting tank.

[0015] Preferably, a discharge port is provided at the bottom of the drying box on the side away from the air source heat pump component, an inclined discharge plate is fixedly provided at the bottom end of the interior of the drying box, the inclined discharge plate is arranged on the inner side of the discharge port, the inclined discharge plate is arranged at the bottom of the hollow plate below, and a discharge frame is fixedly provided on the side of the drying box away from the air source heat pump component, the discharge frame is arranged on the outside of the discharge port, so as to facilitate the discharge of the dried tea leaves from the interior of the drying box.

[0016] Preferably, support legs are fixedly provided at the four corners of the bottom end of the drying box, and the bottom end of the discharge frame is higher than the bottom ends of the support legs, so as to facilitate the support and fixation of the drying box.

[0017] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0018] 1. The heat pump drying mechanism is used to perform segmented hot air drying on the tea leaves. Each drying stage can correspond to the dryness and weight of the tea leaves respectively, and the bottom and top of the tea leaves can be dried at the same time, so that the drying is more uniform. The scraping mechanism is used to scrape and move the tea leaves, which can be turned over, further improving the uniformity and efficiency of the tea leaves drying, making the tea leaves drying effect better. In addition, during the hot air drying, the hot air can also remove the dust and residue on the tea leaves, making the device more practical.

[0019] 2. By condensing and recovering the moisture in the circulating air and then recycling the heat in the circulating air, the electricity consumed by the air source heat pump components during operation is effectively reduced, energy is saved, and the device is more environmentally friendly and more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] FIG1 is a schematic diagram of the overall structure of the present invention;

[0022] FIG2 is a schematic diagram of the overall rear view structure of the present invention;

[0023] FIG3 is a schematic diagram of the overall three-dimensional cross-sectional structure of the present invention;

[0024] FIG4 is a schematic diagram of the overall front view structure of the present invention;

[0025] FIG5 is a schematic diagram of the three-dimensional structure of the hollow plate and the scraping mechanism of the present invention;

[0026] FIG6 is a schematic diagram of a three-dimensional cross-sectional structure of a hollow plate of the present invention;

[0027] FIG7 is a schematic diagram of a three-dimensional cross-sectional structure of a heat recovery mechanism of the present invention;

[0028] FIG8 is a schematic diagram of the three-dimensional structure of the motor, the second rotating rod and the driving gear of the present invention.

[0029] Explanation of the accompanying symbols: 1. Drying box; 2. Hollow plate; 3. Hot air hole; 4. Filter plate; 5. Feed trough; 6. Air source heat pump assembly; 7. Hot air frame; 8. Air outlet pipe; 9. Connecting pipe; 10. Air outlet branch pipe; 11. Circulation frame; 12. Circulation pipe; 13. First rotating rod; 14. Pulley; 15. Belt; 16. Movable scraper; 17. Driven gear; 18. Motor; 19. Second rotating rod; 20. Driving gear; 21. Condensation box; 22. Air intake frame; 23. Condensation pipe; 24. Connecting pipe; 25. Liquid collecting box; 26. Dehumidification box; 27. Installation frame; 28. Water-absorbing sponge; 29. ​​Handle; 30. Return pipe; 31. Discharge port; 32. Inclined discharge plate; 33. Discharge frame; 34. Drain pipe; 35. Support leg. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] Example 1

[0032] The present invention provides a heat pump circulating air segmented tea drying device as shown in Figures 1, 2, 3, 4, 5, 6 and 8, including a drying box 1 with a feed trough 5 at the top thereof, the bottom end of the feed trough 5 is connected to the interior of the drying box 1, and three hollow plates 2 distributed up and down are provided inside the drying box 1. One side of the two hollow plates 2 located above and below is close to one side wall of the interior of the drying box 1, and one side of the middle hollow plate 2 is close to the other side wall of the interior of the drying box 1. A plurality of hot air holes 3 are opened at the top and bottom ends of the hollow plates 2. The internal diameters of the hot air holes 3 on the three hollow plates 2 decrease successively from top to bottom. A filter screen plate 4 is fixedly provided on the inner wall of the hot air hole 3. A scraping mechanism is provided on the outer side of the hollow plate 2, a transmission mechanism is provided on the rear side of the drying box 1, and a heat pump drying mechanism is provided on one side of the drying box 1.

[0033] The heat pump drying mechanism includes an air source heat pump component 6 arranged on one side of the drying box 1. A hot air frame 7 is fixedly provided at the hot air outlet of the air source heat pump component 6. An air outlet pipe 8 connected to the interior of the hot air frame 7 is fixedly provided at the front end thereof. A connecting pipe 9 is fixedly provided at one end of the air outlet pipe 8. Three air outlet branch pipes 10 connected to the interior of the connecting pipe 9 are fixedly provided at the outer end thereof. One ends of the three air outlet branch pipes 10 respectively pass through the front end of the drying box 1 and the front ends of the three hollow plates 2 and are connected to the interiors of the three hollow plates 2. A circulation frame 11 connected to the interior of the drying box 1 is fixedly provided at the rear end of the drying box 1. The circulation frame 11 is arranged on one side of the transmission mechanism. A circulation pipe 12 connected to the interior of the drying box 1 is fixedly provided at the rear end of the circulation frame 11.

[0034] The scraping mechanism includes a plurality of first rotating rods 13 provided inside the drying box 1, and both ends of the first rotating rods 13 are rotatably connected to the front and rear walls inside the drying box 1. The plurality of first rotating rods 13 respectively pass through the two sides of the three hollow plates 2, and are rotatably connected to the hollow plates 2. The rear ends of the three first rotating rods 13 extend to the rear side of the drying box 1, and two pulleys 14 are fixedly provided at the outer end of each first rotating rod 13. The plurality of pulleys 14 are respectively provided on the front and rear sides of the three hollow plates 2, and the two adjacent pulleys 14 on the left and right are connected by belts 15. The three air outlet branch pipes 10 respectively pass through the inside of the three belts 15 located on the front side, and a plurality of movable scrapers 16 are fixed between the two belts 15 opposite to each other. The bottom end of the movable scraper 16 located on the upper part of the hollow plate 2 contacts the top end of the hollow plate 2, and the top end of the movable scraper 16 located at the bottom of the hollow plate 2 contacts the bottom end of the hollow plate 2.

[0035] The transmission mechanism includes a driven gear 17 fixedly arranged at the rear ends of three first rotating rods 13. The three driven gears 17 are meshed with each other. A motor 18 is fixedly arranged at the rear end of the drying box 1. A second rotating rod 19 is fixedly arranged on the output shaft of the motor 18. One end of the second rotating rod 19 is rotatably connected to the rear end of the drying box 1. A driving gear 20 is fixedly arranged at the outer end of the second rotating rod 19. The driving gear 20 is meshed with the driven gear 17 at the top.

[0036] A discharge port 31 is provided at the bottom of the drying box 1 on the side away from the air source heat pump assembly 6. An inclined discharge plate 32 is fixedly provided at the bottom end of the interior of the drying box 1. The inclined discharge plate 32 is arranged on the inner side of the discharge port 31. The inclined discharge plate 32 is arranged at the bottom of the hollow plate 2 below. A discharge frame 33 is fixedly provided on the side of the drying box 1 away from the air source heat pump assembly 6. The discharge frame 33 is arranged on the outer side of the discharge port 31.

[0037] Support legs 35 are fixedly provided at the four corners of the bottom end of the drying box 1 , and the bottom end of the discharge frame 33 is higher than the bottom end of the support legs 35 .

[0038] The tea leaves are put from the feed trough 5 onto the hollow plate 2 above the interior of the drying box 1, and the motor 18 is started. The output shaft of the motor 18 drives the second rotating rod 19 to rotate, and the second rotating rod 19 drives the driving gear 20 to rotate, and the driving gear 20 drives the three driven gears 17 to rotate, and the driven gear 17 drives the first rotating rod 13 to rotate, and the first rotating rod 13 drives the pulley 14 to rotate, and the pulley 14 drives the belt 15 to rotate, and the belt 15 drives the movable scraper 16 to move. The movable scraper 16 will push the tea leaves at the top of the upper hollow plate 2 to the left. When the tea leaves move to the far left, the tea leaves will fall to the top of the middle hollow plate 2, and then the tea leaves will move to the right, and then fall from the right side of the middle hollow plate 2 to the top of the lower hollow plate 2, and then fall from the left side of the lower hollow plate 2 to the top of the inclined discharge plate 32, and then pass through the inside of the discharge port 31, and finally be discharged from the discharge frame 33.

[0039] While the tea leaves are moving, the air source heat pump assembly 6 is started, and the hot air enters the hot air frame 7 from the air outlet of the air source heat pump assembly 6, and then passes through the air outlet pipe 8, the connecting pipe 9 and the three air outlet branches 10 to enter the three hollow plates 2 respectively, and then blown out from multiple hot air holes 3. The upper hot air hole 3 has a larger inner diameter and a larger air volume. The tea leaves that have just entered the drying box 1 have more moisture and a larger weight. In the first stage of drying, the large air volume can quickly take away the moisture on the tea leaves. When the tea leaves move to the top of the hollow plate 2 in the middle, the diameter of the hot air hole 3 decreases, and then the air volume decreases. At this time, the moisture content of the tea leaves has been reduced, and the weight has been reduced. The reduced air volume will not blow the tea leaves away. The tea leaves will fly up and can be dried in the second stage. During the drying process, the hot air blown out from the upper hollow plate 2 will dry the tea leaves from the top, and then cooperate with the wind blown out from the middle hollow plate 2 to dry the bottom of the tea leaves, so that the drying of the tea leaves is more uniform. When the tea leaves move to the top of the lower hollow plate 2, the diameter of the hot air holes 3 at the top of the lower hollow plate 2 is further reduced, and the final step of drying can be carried out according to the drying degree and weight of the tea leaves. At this time, the wind blown out from the bottom of the middle hollow plate 2 will dry the top of the tea leaves. The bottom and the top are dried at the same time, so that the tea leaves are dried more evenly. When the movable scraper 16 scrapes the tea leaves and moves, the tea leaves will turn over, and the tea leaves can be dried evenly and quickly.

[0040] The present invention uses a heat pump drying mechanism to perform segmented hot air drying on the tea leaves. Each drying stage can correspond to the drying degree and weight of the tea leaves respectively, and the bottom and top of the tea leaves can be dried simultaneously, so that the drying is relatively uniform. The scraping mechanism is used to scrape and move the tea leaves, so that the tea leaves can be turned over, which further improves the uniformity and efficiency of the tea drying, so that the drying effect of the tea leaves is better. At the same time as the hot air drying, the hot air can take away the dust and residue on the tea leaves, so that the practicality of the device is higher. This embodiment specifically solves the problem that when drying tea leaves in the prior art, most of the time, the tea leaves are directly placed in a drying box, and then the entire drying box is heated to dry the tea leaves inside the drying box. This drying method wastes heat relatively much, and the tea leaves are easily piled up, which causes uneven drying of the tea leaves and the poor drying effect of the tea leaves.

[0041] Example 2

[0042] The present invention provides a heat pump circulating air segmented tea drying equipment as shown in Figures 2, 3 and 7. The air inlet of the air source heat pump component 6 is fixedly provided with a condensation box 21, and the rear end of the condensation box 21 is fixedly provided with an air intake frame 22 connected to the interior thereof. A condensation pipe 23 is provided inside the condensation box 21. One end of the circulation pipe 12 passes through the top of the condensation box 21 and is fixedly connected to one end of the condensation pipe 23. The other end of the condensation pipe 23 is fixedly provided with a connecting pipe 24. The bottom end of the connecting pipe 24 extends to the bottom of the condensation box 21. A liquid collecting box 25 is provided on the rear side of the air source heat pump component 6. The bottom end of the connecting pipe 24 passes through the top of the liquid collecting box 25 and is connected to the interior of the liquid collecting box 25. A drainage pipe 34 connected to the interior thereof is fixedly provided at the bottom of one side of the liquid collecting box 25, and a valve is fixed on the drainage pipe 34.

[0043] A dehumidification box 26 connected to the interior of the liquid collecting box 25 is fixedly provided on the top of the rear end thereof, and a mounting frame 27 is provided inside the dehumidification box 26. The outer end of the mounting frame 27 is in contact with the inner wall of the dehumidification box 26, and one side of the mounting frame 27 extends to one side of the dehumidification box 26. A water-absorbing sponge 28 is fixed on the inner wall of the mounting frame 27, and a handle 29 is fixed on one side of the mounting frame 27. A return pipe 30 is fixed on the top of the dehumidification box 26, and the bottom end of the return pipe 30 extends to the interior of the dehumidification box 26. The bottom end of the return pipe 30 is provided on the rear side of the mounting frame 27 and the water-absorbing sponge 28, and the top end of the return pipe 30 passes through the bottom end of the air intake frame 22 and is connected to the interior of the air intake frame 22.

[0044] The wind with moisture will first be concentrated in the circulation frame 11, and then enter the condensing pipe 23 through the circulation pipe 12. When the air source heat pump assembly 6 is working, the heat in the air at its outlet will be transferred away, thereby making the temperature inside the condensing box 21 lower. The moisture entering the condensing pipe 23 will condense, and the condensed water will flow into the collecting tank 25 through the connecting pipe 24. The air will be dehumidified by the water-absorbing sponge 28, and then enter the dehumidifying box 26, and then enter the air intake frame 22 through the return pipe 30. It will then flow to the air inlet of the air source heat pump component 6, and the air source heat pump component 6 will transfer the residual heat in the circulating air to its air outlet, so that the residual heat in the hot air can be recycled, which can save the electric energy consumed by the air source heat pump component 6 when it is working, and it is highly practical. The present invention condenses and recovers the moisture in the circulating air, and then recycles the heat in the circulating air, which effectively reduces the electric energy consumed by the air source heat pump component 6 when it is working, saves energy, and makes the device more environmentally friendly and more practical.

[0045] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A heat pump circulating air segmented tea drying device, comprising a drying box (1) with a feed trough (5) arranged at the top thereof, wherein the bottom end of the feed trough (5) is connected to the interior of the drying box (1), characterized in that: The drying box (1) is provided with three hollow plates (2) distributed up and down, one side of the two hollow plates (2) located up and down is close to one side wall of the drying box (1), and one side of the middle hollow plate (2) is close to the other side wall of the drying box (1). The top and bottom ends of the hollow plates (2) are provided with a plurality of hot air holes (3), the inner diameters of the hot air holes (3) on the three hollow plates (2) decrease from top to bottom, and a filter screen plate (4) is fixedly provided on the inner wall of the hot air hole (3). A scraping mechanism is provided on the outer side of the hollow plate (2), a transmission mechanism is provided on the rear side of the drying box (1), and a heat pump drying mechanism is provided on one side of the drying box (1).

2. The heat pump circulating air segmented tea drying equipment according to claim 1, characterized in that: The heat pump drying mechanism comprises an air source heat pump component (6) arranged on one side of a drying box (1); a hot air frame (7) is fixedly provided at the hot air outlet of the air source heat pump component (6); an air outlet pipe (8) connected to the interior of the hot air frame (7) is fixedly provided at the front end of the hot air frame (7); a connecting pipe (9) is fixedly provided at one end of the air outlet pipe (8); three air outlet branch pipes (10) connected to the interior of the hot air frame (7) are fixedly provided at the outer end of the connecting pipe (9); one end of the three air outlet branch pipes (10) respectively passes through the front end of the drying box (1) and the front ends of the three hollow plates (2) and are connected to the interior of the three hollow plates (2); a circulation frame (11) connected to the interior of the drying box (1) is fixedly provided at the rear end of the drying box (1); the circulation frame (11) is arranged on one side of the transmission mechanism; and a circulation pipe (12) connected to the interior of the hot air frame (11) is fixedly provided at the rear end of the circulation frame (11).

3. The heat pump circulating air segmented tea drying equipment according to claim 2 is characterized in that: The scraping mechanism comprises a plurality of first rotating rods (13) arranged inside the drying box (1), both ends of the first rotating rods (13) are rotatably connected to the front and rear walls inside the drying box (1), the plurality of first rotating rods (13) respectively penetrate the two sides of the three hollow plates (2), the first rotating rods (13) are rotatably connected to the hollow plates (2), the rear ends of the three first rotating rods (13) extend to the rear side of the drying box (1), two pulleys (14) are fixedly arranged at the outer end of each of the first rotating rods (13), the plurality of pulleys (14) are respectively arranged on the front and rear sides of the three hollow plates (2), two adjacent pulleys (14) on the left and right are connected by belts (15), the three air outlet branch pipes (10) respectively penetrate the inside of the three belts (15) located on the front side, a plurality of movable scrapers (16) are fixedly arranged between the two belts (15) opposite to each other on the front and rear sides, and are located on the hollow plates (2) The bottom end of the upper movable scraper (16) contacts the top end of the hollow plate (2), and the top end of the movable scraper (16) located at the bottom of the hollow plate (2) contacts the bottom end of the hollow plate (2).

4. The heat pump circulating air segmented tea drying equipment according to claim 3 is characterized in that: The transmission mechanism comprises a driven gear (17) fixedly arranged at the rear ends of three first rotating rods (13), the three driven gears (17) meshing with each other, a motor (18) fixedly arranged at the rear end of the drying box (1), a second rotating rod (19) fixedly arranged on the output shaft of the motor (18), one end of the second rotating rod (19) being rotatably connected to the rear end of the drying box (1), a driving gear (20) fixedly arranged at the outer end of the second rotating rod (19), the driving gear (20) meshing with the driven gear (17) at the top.

5. The heat pump circulating air segmented tea drying equipment according to claim 2, characterized in that: A condenser box (21) is fixedly provided at the air inlet of the air source heat pump assembly (6); an air intake frame (22) connected to the interior of the condenser box (21) is fixedly provided at the rear end of the condenser box (21); a condenser pipe (23) is provided inside the condenser box (21); one end of the circulation pipe (12) passes through the top of the condenser box (21) and is fixedly connected to one end of the condenser pipe (23); a connecting pipe (24) is fixedly provided at the other end of the condenser pipe (23); the bottom end of the connecting pipe (24) extends to the bottom of the condenser box (21); a liquid collecting tank (25) is provided at the rear side of the air source heat pump assembly (6); the bottom end of the connecting pipe (24) passes through the top of the liquid collecting tank (25) and is connected to the interior of the liquid collecting tank (25).

6. The heat pump circulating air segmented tea drying equipment according to claim 5, characterized in that: A dehumidification box (26) connected to the interior of the liquid collecting box (25) is fixedly provided at the top of the rear end thereof, and a mounting frame (27) is provided inside the dehumidification box (26). The outer end of the mounting frame (27) contacts the inner wall of the dehumidification box (26), and one side of the mounting frame (27) extends to one side of the dehumidification box (26). A water-absorbing sponge (28) is fixedly provided on the inner wall of the mounting frame (27), and a handle (29) is fixedly provided on one side of the mounting frame (27).

7. The heat pump circulating air segmented tea drying equipment according to claim 6, characterized in that: A return pipe (30) is fixedly provided at the top of the dehumidification box (26), and the bottom end of the return pipe (30) extends into the interior of the dehumidification box (26). The bottom end of the return pipe (30) is arranged at the rear side of the installation frame (27) and the water-absorbing sponge (28), and the top end of the return pipe (30) passes through the bottom end of the air intake frame (22) and is connected to the interior of the air intake frame (22).

8. A heat pump circulating air segmented tea drying equipment according to claim 5, characterized in that: a drainage pipe (34) connected to the interior of the liquid collecting box (25) is fixedly provided at the bottom of one side thereof, and a valve is fixedly provided on the drainage pipe (34).

9. The heat pump circulating air segmented tea drying equipment according to claim 2, characterized in that: A discharge port (31) is provided at the bottom of the drying box (1) on a side away from the air source heat pump assembly (6); an inclined discharge plate (32) is fixedly provided at the bottom end of the interior of the drying box (1); the inclined discharge plate (32) is arranged on the inner side of the discharge port (31); the inclined discharge plate (32) is arranged at the bottom of the hollow plate (2) below; a discharge frame (33) is fixedly provided on the side of the drying box (1) away from the air source heat pump assembly (6); the discharge frame (33) is arranged on the outer side of the discharge port (31).

10. The heat pump circulating air segmented tea drying equipment according to claim 9, characterized in that: Support legs (35) are fixedly provided at the four corners of the bottom end of the drying box (1), and the bottom end of the discharge frame (33) is higher than the bottom ends of the support legs (35).

Images