Solar coupling two-stage heat pump drying system

Abstract

The invention discloses a solar coupling two-stage heat pump drying system, which belongs to the field of drying equipment and comprises a top tray, a solar heat collection and energy storage module is mounted at the center of the top of the top tray, and a two-stage air source heat pump module is mounted at one end of the top of the top tray. A first conveying pipe is installed between the solar heat collection and energy storage module and the two-stage air source heat pump module, a placement mechanism is installed at the bottom of the top disc and comprises a cabinet body, side plates, a placement groove, an elastic piece, a placement frame and a vibration motor, the bottom of the top disc is fixedly connected with the top of the cabinet body, and the side plates are fixedly connected to the two sides of the inner wall of the cabinet body; the opposite faces of the two sets of side plates are each provided with a plurality of sets of containing grooves, due to the fact that the multiple sets of containing frames are arranged, the multiple sets of drying shells can be placed, when materials of different varieties are dried, the materials of the different varieties can be classified and placed into the different drying shells, in the whole drying process, the time of workers is saved, and the drying efficiency is improved. And meanwhile, the use efficiency of the drying equipment is also improved.

Description

Technical Field

[0001] The invention relates to the technical field of drying equipment, and in particular to a solar-coupled two-stage heat pump drying system. Background Art

[0002] The drying process is an important link in many industries, agriculture, food and chemical industries. It usually requires a large amount of heat energy to remove moisture from the material. However, with the intensification of the energy crisis and the enhancement of environmental awareness, traditional drying technology has gradually exposed problems such as high energy consumption, environmental pollution, and large carbon emissions. It is urgent to adopt new energy and low-carbon technology to improve the energy utilization rate of the drying system and reduce carbon emissions, which is of great significance to promote the green and sustainable development of drying operations.

[0003] In the traditional solar drying system, the heat energy collected by the solar collector is transported to the drying chamber through natural convection and forced convection to dry the wet materials. This indirect solar drying method has high requirements on the weather. In bad weather or at night, the drying system cannot work and the drying efficiency is low, which will cause the wet materials to be not effectively dried and deteriorate. Compared with the solar drying system, the heat energy supply of the single heat pump drying system is stable, but the power consumption is too large. It can be seen that the solar drying system can reduce energy consumption, but the heat energy supply is unstable; the heat pump drying system has a stable heat energy supply but high energy consumption. Moreover, the current In the systematic drying process, it is impossible to monitor and control the drying degree of the wet material, so the drying effect of the wet material cannot be guaranteed. Based on these problems, Chinese patent CN221403701U discloses a solar coupled heat pump two-stage drying equipment. When the solar radiation is sufficient to drive the heat transfer medium to flow normally, the evaporator, throttle valve, condenser, heat collecting coil and the second switch valve operate to provide high-temperature air for the drying box. When the solar radiation is insufficient and the heat transfer medium fails to flow normally, the first switch valve can be opened to operate the compressor, condenser, throttle valve and evaporator, thereby ensuring a stable supply of high-temperature air.

[0004] Different types of materials have different drying times and acceptable drying temperatures. Since the drying equipment can only dry one material at a time, when multiple materials need to be dried, it not only wastes the staff's time, but also affects the efficiency of the drying equipment. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A solar-coupled two-stage heat pump drying system comprises a top plate, a solar thermal energy storage module is installed at the top center of the top plate, a two-stage air source heat pump module is installed at one end of the top of the top plate, a first conveying pipe is installed between the solar thermal energy storage module and the two-stage air source heat pump module, a placement mechanism is installed at the bottom of the top plate, the placement mechanism comprises a cabinet, a side panel, a placement slot, an elastic member, a placement frame and a vibration motor, the bottom of the top plate is fixedly connected to the top of the cabinet, the inner wall of the cabinet is fixedly connected to the side panels on both sides, a plurality of groups of placement slots are provided on the opposite surfaces of the two groups of side panels, the bottom ends of the inner wall of the placement slot are fixedly connected to the elastic member, the movable end of the elastic member is fixedly connected to the placement frame, the bottom ends of the bottom of the placement frame are fixedly connected to the vibration motor, a moving mechanism is installed at the bottom of the placement mechanism, the inner wall of the placement frame is sleeved with a drying shell, the bottom end of the inner wall of the drying shell is fixedly connected with a mesh frame, the inner wall of the mesh frame is fixedly connected with a frame, the inner wall of the frame is sleeved with a side shell, and the bottom end of the inner wall of the side shell is fixedly connected with a filter capable of placing wet materials.

[0008] As a further description of the above technical solution:

[0009] The moving mechanism includes a bottom frame, a groove, a base, an anti-slip bump, a forward and reverse motor, a wireless controller, a threaded ring, a protective shell, a ventilation hole, a gear plate, a first rotating shaft, a pinion, a threaded column, a threaded sleeve, a slide plate, an L-shaped plate and a universal wheel. The bottom of the cabinet is fixedly connected to the two ends of the top of the bottom frame, and a groove is provided on the top of the bottom frame.

[0010] As a further description of the above technical solution:

[0011] Both ends of the bottom of the bottom frame are fixedly connected with a base, and the bottom of the base is fixedly connected with a plurality of groups of anti-slip bumps, a forward and reverse motor passes through the bottom center of the bottom frame, and a wireless controller is fixedly connected to the bottom of the forward and reverse motor, and a threaded ring is fixedly connected to the bottom end of the outer wall of the forward and reverse motor, and a protective shell is threadedly connected to the outer wall of the threaded ring, and a plurality of ventilation holes are provided on the outer wall of the protective shell.

[0012] As a further description of the above technical solution:

[0013] The movable end of the forward and reverse motor is rotatably connected to a gear plate, the two ends of the bottom of the inner wall of the groove are fixedly connected to a first rotating shaft, the top of the first rotating shaft is rotatably connected to a pinion, the gear teeth on the outer wall of the gear plate are meshed with the tooth grooves on the outer wall of the pinion, the top of the pinion is fixedly connected to a threaded column, the outer wall of the threaded column is threadedly connected to a threaded sleeve, the outer wall of the threaded sleeve is fixedly connected to a slide, the opposite sides of the two groups of slides are fixedly connected to an L-shaped plate, and the two ends of the bottom of the L-shaped plate are fixedly connected to universal wheels.

[0014] As a further description of the above technical solution:

[0015] A monitoring module is installed at the front end of the drying shell, both ends of the bottom of the drying shell are fixedly connected with slide rails, the inner wall of the slide rails is slidably connected with a recovery box, a rubber ring is fixedly connected to the outer edge of the top of the recovery box, a sponge pad is sleeved on the inner wall of the recovery box, the front end of the recovery box is fixedly connected with a limit plate, and the front end of the limit plate is fixedly connected with a handle.

[0016] As a further description of the above technical solution:

[0017] Square through holes are provided on both sides of the inner wall of the frame, one end of the inner wall of the square through hole is fixedly connected with a hollow plate, the inner wall of the hollow plate is slidably connected with a spring rod, one end of the outer wall of the spring rod is sleeved with a first return spring, one end face of the spring rod is fixedly connected with a clamping block, the other end face of the spring rod is fixedly connected with a first threaded rod, one end of the outer wall of the first threaded rod is sleeved with a baffle, the other end of the outer wall of the first threaded rod is threadedly connected with a first nut, the outer walls of both sides of the side shell are penetrated by a slot frame, and one end of the outer wall of the clamping block is clamped with the inner wall of the slot frame.

[0018] As a further description of the above technical solution:

[0019] The top of the filter screen is fixedly connected with a plurality of groups of arc-shaped protrusions, the top surfaces of the arc-shaped protrusions are fixedly connected with rubber sheets, the top of the outer wall of the drying shell is fixedly connected with a limit frame, and both ends of the limit frame are equipped with clamping mechanisms.

[0020] As a further description of the above technical solution:

[0021] The clamping mechanism includes a spring tube, a sliding rod, a second return spring, a second threaded rod, a sliding plate, a second nut, a washer, a second rotating shaft and a rotating plate, the two ends of the limit frame are penetrated by the spring tube, the two ends of the top of the spring tube are penetrated by sliding rods, the bottom end of the outer wall of the sliding rod is sleeved with the second return spring, the bottom of the second return spring is fixedly connected to the second threaded rod, the top end of the outer wall of the second threaded rod is sleeved with a sliding plate, the bottom end of the outer wall of the second threaded rod is threadedly connected with the second nut, the top of the sliding rod is fixedly connected with the washer, the top center of the washer is fixedly connected to the second rotating shaft, and the top of the second rotating shaft is rotatably connected to the rotating plate.

[0022] As a further description of the above technical solution:

[0023] A top cover is sleeved on the top of the inner wall of the drying shell, and guide plates are fixedly connected to both ends of the bottom of the top cover. An insert ring penetrates the rear end of the drying shell, a plurality of groups of placement plates are fixedly connected to the outer wall of one side of the cabinet, a branch box is fixedly connected to the outer wall of one side of the placement plate, a circulation fan is fixedly connected to the top of each placement plate, a plurality of groups of second delivery pipes are fixedly connected to the opposite surfaces of the branch box and the circulation fan, a third delivery pipe is installed between the two-stage air source heat pump module and the branch box, a fourth delivery pipe is installed at the rear end of each circulation fan, and the end of the fourth delivery pipe can be inserted into the inner wall of the insert ring.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] (1) Since there are multiple groups of placement frames, multiple groups of drying shells can also be placed. When drying different types of materials, different types of materials can be classified and placed in different drying shells. The entire drying process not only saves the time of the staff, but also improves the use efficiency of the drying equipment.

[0026] (2) By setting up universal wheels, the entire equipment can be moved more conveniently. When the threaded column rotates, the threaded sleeve can move up and down on the outer wall of the rotating threaded column, and the slide plate and the L-shaped plate will also move up and down together. When the L-shaped plate moves upward, the bottom of the base will slowly contact the ground, and then the universal wheel will be lifted. At this time, the entire drying equipment is more stable. When the L-shaped plate moves downward, the universal wheel will first contact the ground, and then the base will slowly lift up, and the entire equipment can be moved.

[0027] (3) By setting up a recovery box, liquid water can be recovered. By setting up a rubber ring, when the recovery box is installed under the drying shell, the top of the rubber ring will be tightly attached to the lower surface of the drying shell, and the rubber ring will be squeezed and deformed. Under the action of the expansion force of the rubber ring, the installed recovery box can be made more stable, and the sealing of the connection structure between the recovery box and the drying shell is also improved. By setting up a sponge pad, liquid water can be absorbed to avoid splashing of liquid water. By setting up a simple connection method between the recovery box and the slide rail, the disassembly and assembly steps of the recovery box are more convenient and quick, and it is also convenient for the staff to handle the liquid water in the sponge pad or replace the sponge pad.

[0028] (4) When the vibration motor is turned on, the placement frame above the elastic part will vibrate, and the surface of the filter screen can accumulate wet materials that need to be dried. When the placement frame vibrates, the frame will vibrate with the side shell, and the materials will shake along with it. This not only prevents the materials from piling up or sticking, but also speeds up the outflow of liquid water. The liquid water will pass through the filter screen and drip into the recovery box below.

[0029] (5) When the side shell vibrates, the arc-shaped protrusion can accelerate the separation of adhered or accumulated materials, while reducing the contact area between the materials and the filter screen, thereby preventing the filter screen from being blocked. By setting a rubber sheet, the material can be protected.

[0030] (6) After removing the first nut, the baffle can be disassembled, and then the spring rod can be pulled out of the hollow plate. Finally, the first return spring can be replaced. First remove the second nut, then remove the sliding plate, and then the second return spring can be replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the present invention;

[0032] Figure 2 It is a front view of the present invention;

[0033] Figure 3 It is a front cross-sectional view of the present invention;

[0034] Figure 4 It is a front cross-sectional view of the placement mechanism in the present invention;

[0035] Figure 5 It is a front cross-sectional view of the moving mechanism in the present invention;

[0036] Figure 6 It is a front cross-sectional view of the clamping mechanism in the present invention.

[0037] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0038] 1. Top plate; 2. Solar thermal energy storage module; 3. Two-stage air source heat pump module; 4. First delivery pipe; 5. Placement mechanism; 51. Cabinet; 52. Side plate; 53. Placement slot; 54. Elastic member; 55. Placement frame; 56. Vibration motor; 6. Moving mechanism; 61. Bottom frame; 62. Groove; 63. Base; 64. Anti-skid bump; 65. Forward and reverse motor; 66. Wireless controller; 67. Threaded ring; 68. Protective shell; 69. Ventilation hole; 610. Gear plate; 611. First rotating shaft; 612. Pinion; 613. Threaded column; 614. Threaded sleeve; 615. Slide plate; 616. L-shaped plate; 617. Universal wheel; 7. Drying shell; 8. Monitoring module; 9. Slide rail; 10. Recovery box; 11. Rubber ring; 12. Sponge pad; 13. Limit plate; 14 , handle; 15, mesh frame; 16, frame; 17, side shell; 18, square through hole; 19, hollow plate; 20, spring rod; 21, first return spring; 22, block; 23, first threaded rod; 24, baffle; 25, first nut; 26, slot frame; 27, filter; 28, arc-shaped protrusion; 29, rubber sheet; 30, limit frame; 31, clamping mechanism; 311, spring cylinder; 312, slide rod; 313, second return spring; 314, second threaded rod; 315, slide plate; 316, second nut; 317, pad; 318, second rotating shaft; 319, rotating plate; 32, top cover; 33, guide plate; 34, plug ring; 35, placement plate; 36, branch box; 37, circulation fan; 38, second conveying pipe; 39, third conveying pipe; 40, fourth conveying pipe. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0040] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0041] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments. The present invention provides the following embodiments.

[0042] Reference Figure 1-6An embodiment of the present invention is as follows: a solar coupled two-stage heat pump drying system, comprising a top plate 1, a solar thermal energy storage module 2 is installed at the top center of the top plate 1, the solar thermal energy storage module 2 includes a solar thermal collector, a hot water storage tank, a water pump, and a solar heat exchanger, a two-stage air source heat pump module 3 is installed at one end of the top of the top plate 1, the two-stage air source heat pump module 3 includes a compressor, a condenser, an expansion valve, and an evaporator, a first delivery pipe 4 is installed between the solar thermal energy storage module 2 and the two-stage air source heat pump module 3, and a cabinet 5 is fixedly connected to the bottom of the top plate 1 1. Side panels 52 are fixedly connected to both sides of the inner wall of the cabinet 51. Multiple groups of placement grooves 53 are provided on the opposite surfaces of the two groups of side panels 52. Elastic members 54 are fixedly connected to both ends of the bottom of the inner wall of the placement groove 53. The movable end of the elastic member 54 is fixedly connected to a placement frame 55. The bottom ends of the placement frame 55 are fixedly connected to a vibration motor 56. The placement mechanism 5 can be formed by arranging the cabinet 51, the side panels 52, the placement grooves 53, the elastic member 54, the placement frame 55 and the vibration motor 56. When the vibration motor 56 is turned on, the placement frame 55 above the elastic member 54 will vibrate.

[0043] The bottom of the cabinet 51 is fixedly connected with a bottom frame 61, a groove 62 is provided at the top of the bottom frame 61, and bases 63 are fixedly connected to both ends of the bottom of the bottom frame 61. A plurality of groups of anti-skid protrusions 64 are fixedly connected to the bottom of the base 63. By providing the anti-skid protrusions 64, the stability and safety of the entire drying equipment can be improved. A circular hole is provided at the bottom center of the bottom of the bottom frame 61, and a forward and reverse motor 65 is installed on the inner wall of the circular hole. The movable end of the forward and reverse motor 65 extends into the groove 62. A wireless controller 66 is fixedly connected to the bottom of the forward and reverse motor 65. By providing the wireless controller 66, it is convenient for the staff to remotely control the switch and speed of the forward and reverse motor 65. The forward and reverse motor 65 can be controlled by controlling the rotation direction. A threaded ring 67 is fixedly connected to the bottom end of the outer wall of the forward and reverse motor 65. The top surface of the threaded ring 67 is fixedly connected to the bottom surface of the bottom frame 61. The outer wall of the threaded ring 67 is threadedly connected to a protective shell 68. By setting the protective shell 68, the forward and reverse motor 65 can be protected. The outer wall of the protective shell 68 is provided with multiple groups of ventilation holes 69. By setting the ventilation holes 69, it is convenient to discharge the heat generated during the operation of the forward and reverse motor 65. By setting a simple connection method between the protective shell 68 and the threaded ring 67, the disassembly and assembly steps of the protective shell 68 are more convenient and quick, and it is also convenient for the staff to repair the forward and reverse motor 65.

[0044] The movable end of the forward and reverse motor 65 is rotatably connected to the gear plate 610, and the bottom two ends of the inner wall of the groove 62 are fixedly connected to the first rotating shaft 611, and the top of the first rotating shaft 611 is rotatably connected to the pinion 612. The gear teeth on the outer wall of the gear plate 610 mesh with the tooth grooves on the outer wall of the pinion 612, and the top of the pinion 612 is fixedly connected to the threaded column 613. When the forward and reverse motor 65 rotates with the gear plate 610, the threaded column 613 on the top of the pinion 612 will also rotate together. The outer wall of the threaded column 613 is threadedly connected to the threaded sleeve 614, and the outer wall of the threaded sleeve 614 is fixedly connected to the slide plate 615. The opposite surfaces of the two groups of slide plates 615 can slide closely against the outer walls of the cabinet 51 on both sides. The opposite surfaces of the two groups of slide plates 615 are fixedly connected to the L-shaped plate 616, and the bottom two ends of the L-shaped plate 616 are fixedly connected to the universal wheel 617. By setting the universal wheel 617, the entire device can be It is more convenient to move. When the threaded column 613 rotates, the threaded sleeve 614 can move up and down on the outer wall of the rotating threaded column 613, and the slide plate 615 and the L-shaped plate 616 will also move up and down together. When the L-shaped plate 616 moves upward, the bottom of the base 63 will slowly contact the ground, and then the universal wheel 617 will be lifted. At this time, the entire drying equipment is more stable. When the L-shaped plate 616 moves downward, the universal wheel 617 will first contact the ground, and then the base 63 will slowly lift up. At this time, the entire equipment can be moved. By setting the bottom frame 61, the groove 62, the base 63, the anti-slip protrusion 64, the forward and reverse motor 65, the wireless controller 66, the threaded ring 67, the protective shell 68, the ventilation hole 69, the gear plate 610, the first rotating shaft 611, the pinion 612, the threaded column 613, the threaded sleeve 614, the slide plate 615, the L-shaped plate 616 and the universal wheel 617, a moving mechanism 6 can be formed.

[0045] The inner wall of the placement frame 55 is sleeved with a drying shell 7. Since the placement frame 55 is provided with multiple groups, multiple groups of drying shells 7 can be placed. A square cavity running through the upper and lower parts is provided in the drying shell 7. A monitoring module 8 is installed at the front end of the drying shell 7. A square hole is provided at the front end of the drying shell 7, and the outer wall of the monitoring module 8 is installed in the square hole. The internal space of the square hole is interconnected with the internal space of the drying shell 7. By setting the monitoring module 8, the temperature and humidity in the drying shell 7 can be detected and displayed. Both ends of the bottom of the drying shell 7 are fixedly connected with slide rails 9. The inner wall of the slide rails 9 is slidably connected with a recovery box 10. By setting the recovery box 10, liquid water can be recovered. An opening is provided at the top of the recovery box 10, and the opening is provided just below the square cavity in the drying shell 7. A rubber ring 11 is fixedly connected to the outer edge of the top of the recovery box 10. By setting the rubber ring 11, when the recovery box 10 is installed on the drying shell 7 When the recycling box 10 is installed, the top of the rubber ring 11 will be tightly attached to the lower surface of the drying shell 7, and the rubber ring 11 will be squeezed and deformed. Under the action of the expansion force of the rubber ring 11, the installed recycling box 10 can be more stable, and the sealing of the connection structure between the recycling box 10 and the drying shell 7 is also improved. The inner wall of the recycling box 10 is sleeved with a sponge pad 12. By providing the sponge pad 12, liquid water can be absorbed to avoid splashing of liquid water. By providing a simple connection method between the recycling box 10 and the slide rail 9, the disassembly and assembly steps of the recycling box 10 are more convenient and quick, and it is also convenient for the staff to process the liquid water in the sponge pad 12 or replace the sponge pad 12. The front end of the recycling box 10 is fixedly connected to a limiting plate 13. By providing the limiting plate 13, the installation position of the recycling box 10 can be limited. The front end of the limiting plate 13 is fixedly connected to a handle 14.

[0046] The bottom end of the inner wall of the drying shell 7 is fixedly connected with a mesh frame 15, and the mesh frame 15 is installed at the bottom end of the square cavity inside the drying shell 7. The inner wall of the mesh frame 15 is fixedly connected with a frame 16. The bottom surfaces of the drying shell 7, the mesh frame 15 and the frame 16 are all arranged on the same horizontal plane. The inner wall of the frame 16 is sleeved with a side shell 17. Square through holes 18 are opened on both sides of the inner wall of the frame 16. One end of the inner wall of the square through hole 18 is fixedly connected with a hollow plate 19. The inner wall of the hollow plate 19 is slidably connected with a spring rod 20. One end of the outer wall of the spring rod 20 is sleeved with a first return spring 21. One end face of the spring rod 20 is fixedly connected with a block 22. Two groups of first return springs 21 can simultaneously push the two groups of blocks 22 in opposite directions. The other end face of the spring rod 20 is fixedly connected with a first threaded rod 23. One end of the outer wall of the first threaded rod 23 is sleeved with a baffle 24. The other end of the outer wall of the first threaded rod 23 is threadedly connected with The first nut 25. After the first nut 25 is removed, the baffle 24 can be disassembled, and then the spring rod 20 can be pulled out from the hollow plate 19, and finally the first return spring 21 can be replaced. The outer walls on both sides of the side shell 17 are penetrated by a slot frame 26, and one end of the outer wall of the block 22 is engaged with the inner wall of the slot frame 26. By setting a connecting structure between the block 22 and the slot frame 26, the side shell 17 can be fixed in the frame 16. When the placement frame 55 vibrates, the side shell 17 will not bounce up or fall off from the frame 16. The bottom end of the inner wall of the side shell 17 is fixedly connected with a filter screen 27. The surface of the filter screen 27 can accumulate wet materials that need to be dried. When the placement frame 55 vibrates, the frame 16 will vibrate with the side shell 17. At this time, the material will shake together, which can not only prevent the accumulation or adhesion of materials, but also accelerate the outflow of liquid water. The liquid water will pass through the filter screen 27 and drip into the recovery box 10 below.

[0047] A plurality of groups of arc-shaped protrusions 28 are fixedly connected to the top of the filter screen 27. By providing the arc-shaped protrusions 28, when the side shell 17 vibrates, the arc-shaped protrusions 28 can accelerate the separation of adhered or accumulated materials, and reduce the contact area between the materials and the filter screen 27, thereby preventing the filter screen 27 from being blocked. The top surfaces of the arc-shaped protrusions 28 are fixedly connected to rubber sheets 29. By providing the rubber sheets 29, the materials can be protected. The top end of the outer wall of the drying shell 7 is fixedly connected to a limiting frame 30. By providing the limiting frame 30, the drying shell 7 placed in the placement frame 55 can be limited and supported.

[0048] When the second nut 316 is removed, the second reset spring 313 can be replaced by the fixing block 314, and the fixing block 314 can be repaired and put into operation. A pad 317 is fixedly connected to the top, and a second rotating shaft 318 is fixedly connected to the top center of the pad 317. A rotating plate 319 is rotatably connected to the top of the second rotating shaft 318. By arranging a spring tube 311, a sliding rod 312, a second return spring 313, a second threaded rod 314, a sliding plate 315, a second nut 316, a pad 317, a second rotating shaft 318 and a rotating plate 319, a clamping mechanism 31 can be formed. A top cover 32 is sleeved on the top of the inner wall of the drying shell 7. By arranging the rotating plate 319, the top cover 32 can be clamped and fixed. Guide plates 33 are fixedly connected to the two ends of the bottom of the top cover 32. By arranging the guide plates 33, water vapor generated by the drying of the wet material will adhere to the guide plates 33. Because the guide plates 33 are inclined to both sides, the water vapor will gather into water droplets and gently flow along the inclined guide plates 33 to the two sides of the inner wall of the drying shell 7, and then pass through the mesh frame 15 and drip into the recovery box 10 below.

[0049] A plug ring 34 runs through the rear end of the drying shell 7, a plurality of groups of placement plates 35 are fixedly connected to the outer wall of one side of the cabinet 51, a branch box 36 is fixedly connected to the outer wall of one side of the placement plate 35, a circulating fan 37 is fixedly connected to the top of each placement plate 35, a plurality of groups of second conveying pipes 38 are fixedly connected to the opposite surfaces of the branch box 36 and the circulating fan 37, a third conveying pipe 39 is installed between the two-stage air source heat pump module 3 and the branch box 36, a fourth conveying pipe 40 is installed at the rear end of each circulating fan 37, and the end of the fourth conveying pipe 40 can be inserted into the inner wall of the plug ring 34. By arranging the first conveying pipe 4, the second conveying pipe 38, the third conveying pipe 39 and the fourth conveying pipe 40, the solar thermal energy storage module 2, the two-stage air source heat pump module 3 and the circulating fan 37 can be connected together with the plurality of groups of drying shells 7. The two-stage air source heat pump module 3 is operated by an independent two-stage heat pump to respectively adjust the temperature and humidity of the drying air. The low temperature stage can preheat the air at a lower temperature to avoid excessive thermal stress on the agricultural products. The high temperature stage can accurately adjust the final temperature of the air according to the humidity changes during the drying process. By real-time monitoring of temperature and humidity, the system can dynamically adjust air parameters to ensure that the drying medium is always in the optimal drying range. Through temperature and humidity sensors and automatic control systems, the two-stage heat pump can adjust the operating mode according to the real-time status of the drying medium. The air temperature and humidity information collected by the sensor will be fed back to the system controller to adjust the operating power of the low and high temperature stages, thereby achieving precise control. The module can also automatically adjust the temperature difference at each level according to different seasons and drying requirements to ensure efficient and stable drying process. Another key to precise control is to maximize energy utilization. Through the precise adjustment of the two-stage heat pump, the module can avoid energy waste caused by excessively high or low temperatures. For example, when the humidity is high, the module can improve the dehumidification efficiency by adjusting the temperature of the high temperature stage. Conversely, when the degree of dryness is low, the air is preheated through the low temperature stage to improve the overall energy utilization efficiency.

[0050] The above content is a further detailed description of the present invention in combination with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as belonging to the scope of protection determined by the claims submitted for the present invention.

Claims

1. A solar-coupled two-stage heat pump drying system, comprising a top plate (1), characterized in that: A solar thermal energy storage module (2) is installed at the top center of the top plate (1), a two-stage air source heat pump module (3) is installed at one end of the top of the top plate (1), a first delivery pipe (4) is installed between the solar thermal energy storage module (2) and the two-stage air source heat pump module (3), a placement mechanism (5) is installed at the bottom of the top plate (1), the placement mechanism (5) comprises a cabinet (51), a side plate (52), a placement groove (53), an elastic member (54), a placement frame (55) and a vibration motor (56), the bottom of the top plate (1) is fixedly connected to the top of the cabinet (51), the inner walls of the cabinet (51) are fixedly connected to the side plates (52), and the opposite surfaces of the two sets of side plates (52) are A plurality of placement grooves (53) are provided, both ends of the bottom of the inner wall of the placement groove (53) are fixedly connected with elastic members (54), the movable end of the elastic member (54) is fixedly connected with a placement frame (55), both ends of the bottom of the placement frame (55) are fixedly connected with a vibration motor (56), a moving mechanism (6) is installed at the bottom of the placement mechanism (5), the inner wall of the placement frame (55) is sleeved with a drying shell (7), the bottom end of the inner wall of the drying shell (7) is fixedly connected with a mesh frame (15), the inner wall of the mesh frame (15) is fixedly connected with a frame (16), the inner wall of the frame (16) is sleeved with a side shell (17), and the bottom end of the inner wall of the side shell (17) is fixedly connected with a filter screen (27) capable of placing wet materials.

2. A solar-coupled two-stage heat pump drying system according to claim 1, characterized in that: The moving mechanism (6) comprises a bottom frame (61), a groove (62), a base (63), an anti-slip convex block (64), a forward and reverse motor (65), a wireless controller (66), a threaded ring (67), a protective shell (68), a ventilation hole (69), a gear plate (610), a first rotating shaft (611), a pinion (612), a threaded column (613), a threaded sleeve (614), a slide plate (615), an L-shaped plate (616) and a universal wheel (617); the bottom of the cabinet (51) is fixedly connected to the top ends of the bottom frame (61); and the top of the bottom frame (61) is provided with a groove (62).

3. A solar-coupled two-stage heat pump drying system according to claim 2, characterized in that: Both ends of the bottom of the bottom frame (61) are fixedly connected to a base (63), the bottom of the base (63) is fixedly connected to a plurality of anti-slip bumps (64), a forward and reverse motor (65) passes through the center of the bottom of the bottom frame (61), the bottom of the forward and reverse motor (65) is fixedly connected to a wireless controller (66), the bottom end of the outer wall of the forward and reverse motor (65) is fixedly connected to a threaded ring (67), the outer wall of the threaded ring (67) is threadedly connected to a protective shell (68), and the outer wall of the protective shell (68) is provided with a plurality of ventilation holes (69).

4. A solar-coupled two-stage heat pump drying system according to claim 2, characterized in that: The movable end of the forward and reverse motor (65) is rotatably connected to a gear plate (610), the bottom ends of the inner wall of the groove (62) are fixedly connected to a first rotating shaft (611), the top of the first rotating shaft (611) is rotatably connected to a pinion gear (612), the gear teeth on the outer wall of the gear plate (610) mesh with the tooth grooves on the outer wall of the pinion gear (612), the top of the pinion gear (612) is fixedly connected to a threaded column (613), the outer wall of the threaded column (613) is threadedly connected to a threaded sleeve (614), the outer wall of the threaded sleeve (614) is fixedly connected to a slide plate (615), the opposite surfaces of the two groups of slide plates (615) are fixedly connected to an L-shaped plate (616), and the bottom ends of the L-shaped plate (616) are fixedly connected to a universal wheel (617).

5. The solar-coupled two-stage heat pump drying system according to claim 1, characterized in that: A monitoring module (8) is installed at the front end of the drying shell (7), and both ends of the bottom of the drying shell (7) are fixedly connected to slide rails (9), and the inner wall of the slide rail (9) is slidably connected to a recovery box (10), and a rubber ring (11) is fixedly connected to the outer edge of the top of the recovery box (10), and a sponge pad (12) is sleeved on the inner wall of the recovery box (10), and the front end of the recovery box (10) is fixedly connected to a limit plate (13), and the front end of the limit plate (13) is fixedly connected to a handle (14).

6. A solar-coupled two-stage heat pump drying system according to claim 1, characterized in that: Square through holes (18) are provided on both sides of the inner wall of the frame (16); one end of the inner wall of the square through hole (18) is fixedly connected to a hollow plate (19); the inner wall of the hollow plate (19) is slidably connected to a spring rod (20); one end of the outer wall of the spring rod (20) is sleeved with a first return spring (21); one end surface of the spring rod (20) is fixedly connected to a clamping block (22); the other end surface of the spring rod (20) is fixedly connected to a first threaded rod (23); one end of the outer wall of the first threaded rod (23) is sleeved with a baffle (24); the other end of the outer wall of the first threaded rod (23) is threadedly connected to a first nut (25); both side outer walls of the side shell (17) are penetrated by a clamping slot frame (26); one end of the outer wall of the clamping block (22) is clamped with the inner wall of the clamping slot frame (26).

7. The solar-coupled two-stage heat pump drying system according to claim 1, characterized in that: The top of the filter screen (27) is fixedly connected to a plurality of groups of arc-shaped protrusions (28), the top surfaces of the arc-shaped protrusions (28) are fixedly connected to rubber sheets (29), the top of the outer wall of the drying shell (7) is fixedly connected to a limit frame (30), and both ends of the limit frame (30) are equipped with clamping mechanisms (31).

8. A solar-coupled two-stage heat pump drying system according to claim 7, characterized in that: The clamping mechanism (31) comprises a spring tube (311), a slide rod (312), a second return spring (313), a second threaded rod (314), a slide plate (315), a second nut (316), a washer (317), a second rotating shaft (318) and a rotating plate (319); both ends of the limit frame (30) are penetrated by the spring tube (311); both ends of the top of the spring tube (311) are penetrated by the slide rod (312); the bottom end of the outer wall of the slide rod (312) is sleeved with the second return spring (313) The bottom of the second return spring (313) is fixedly connected to a second threaded rod (314), the top end of the outer wall of the second threaded rod (314) is sleeved with a sliding plate (315), the bottom end of the outer wall of the second threaded rod (314) is threadedly connected to a second nut (316), the top of the sliding rod (312) is fixedly connected to a pad (317), the top center of the pad (317) is fixedly connected to a second rotating shaft (318), and the top of the second rotating shaft (318) is rotatably connected to a rotating plate (319).

9. The solar-coupled two-stage heat pump drying system according to claim 1, characterized in that: The top end of the inner wall of the drying shell (7) is sleeved with a top cover (32), and both ends of the bottom of the top cover (32) are fixedly connected with guide plates (33). The rear end of the drying shell (7) is penetrated by an insert ring (34). One side outer wall of the cabinet (51) is fixedly connected with a plurality of placement plates (35), and one side outer wall of the placement plate (35) is fixedly connected with a branch box (36). The top of the placement plate (35) is fixedly connected with a circulation fan (37). The opposite surfaces of the branch box (36) and the circulation fan (37) are fixedly connected with a plurality of second delivery pipes (38). A third delivery pipe (39) is installed between the two-stage air source heat pump module (3) and the branch box (36). A fourth delivery pipe (40) is installed at the rear end of the circulation fan (37), and the end of the fourth delivery pipe (40) can be inserted into the inner wall of the insert ring (34).

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