A multi-mode uniform drying equipment

Abstract

The present invention relates to the field of drying technology and provides a multi-mode uniform drying equipment, comprising a microwave drying device, an infrared drying device, a heat pump dehumidification drying device, a negative pressure device, a monitoring and control system and a multi-mode drying system; the microwave drying device comprises a cavity, a cavity expansion unit, a waveguide and a plurality of solid-state microwave sources; the infrared drying device comprises a fixed infrared heating unit, a mobile infrared heating unit, a first power connection port and a second power connection port; the heat pump dehumidification drying device comprises a hot air heating and dehumidification unit, a waste heat recovery unit and a gas filter; the negative pressure device comprises a vacuum pump, a vacuum pipe and a pipe expansion joint; the multi-mode drying system comprises a material drying space movement multi-mode system and a drying mode multi-mode system; the monitoring and control system comprises a color real-time monitoring unit, a dielectric property real-time monitoring unit and a control adjustment screen; the present invention realizes uniform drying and multi-scene drying of materials by combining microwaves, infrared, hot air, negative pressure and multiple material space movements, thereby ensuring good drying effect.

Description

Technical Field

[0001] The invention relates to the field of microwave drying, in particular to multi-mode uniform drying equipment. Technical Background

[0002] Drying is an important method for storing agricultural products and a commonly used food processing technology. Timely and effective post-harvest drying of agricultural products such as grains, fruits and vegetables, and edible fungi is of great significance for reducing production costs and minimizing economic losses. Compared with a single drying mode, multi-mode drying can improve drying efficiency, reduce energy consumption, and shorten drying time.

[0003] At present, there are some drying equipment on the market, which generally have problems such as single drying mode and uneven drying. Summary of the Invention

[0004] The present invention provides a multi-mode uniform drying device, which is characterized by comprising: a microwave drying device, an infrared drying device, a heat pump dehumidification drying device, a negative pressure device, a monitoring and control system and a multi-mode drying system; the microwave drying device comprises a cavity, a cavity expansion unit, a waveguide, and a plurality of solid-state microwave sources, the plurality of solid-state microwave sources are located on one side of the cavity and are connected to the cavity through the waveguide, the cavity expansion unit comprises a stacking device and a driving device, the driving device comprises a hydraulic oil tank, a hydraulic pump, an oil pipe, and a hydraulic cylinder; the infrared drying device comprises a fixed infrared heating unit, a mobile infrared heating unit, a first power connection port and a second power connection port, the fixed The infrared heating unit is located on one side of the cavity, including an infrared shell, an infrared heating wire, and a porous plate. The first power connection port and the second power connection port are located on the upper side of the cavity; the heat pump dehumidification and drying device includes a hot air heating and dehumidification unit, a waste heat recovery unit, and a gas filter; the negative pressure device includes a vacuum pump, a vacuum pipe, and a pipe expansion joint. The vacuum pump is located on one side outside the cavity, the first side of the vacuum pipe is connected to the vacuum pump, and the second side is connected to the cavity through the pipe expansion joint; the multi-mode drying system includes a material drying space movement multi-mode system and a drying method multi-mode system; the monitoring and control system includes a material color real-time monitoring unit, a dielectric property real-time monitoring unit, and a control adjustment screen.

[0005] In which, the mobile infrared heating unit includes a fixed frame, a first infrared heating group, a second infrared heating group, a first power connector and a second power connector; the first infrared heating group includes a first infrared heating layer, a first material tray and a first infrared energy reflection cover; the second infrared heating group includes a second infrared heating layer, a second material tray and a second infrared energy reflection cover; the first infrared heating layer and the second infrared heating layer each include a plurality of infrared heating tubes; the first material tray is located on the upper side of the first infrared heating layer, and the first infrared reflection cover is located on the upper side of the first material tray, and the first infrared reflection cover can reflect the infrared energy released by the first infrared heating layer to the surface of the first material tray; the second infrared heating group has the same working principle as the first infrared heating group; the first power connector and the second power connector can be connected to the first power connection port and the second power connection port to provide power and control signals for the mobile infrared heating unit.

[0006] Among them, the hot air heating and dehumidification unit includes a blower, an air inlet, a compressor, a first motor, a condenser, an evaporator, an electric heater, a heat pump pipeline, an air supply pipe, an air outlet pipe, a pipeline expansion joint, a first control air valve and a third control air valve; the gas generated by the blower is heated by the electric heater and the condenser and then transported to the cavity via the air supply pipe; the waste heat recovery unit includes a gas recovery pipe and a second control air valve, and the humid hot gas discharged from the air outlet pipe can be transported to the evaporator via the second control air valve and the gas recovery pipe, and the gas dehumidified by the evaporator re-enters the air inlet through the gas recovery pipe, realizing heat recovery, dehumidification and recycling of the humid hot gas; the gas filter is located in the air outlet pipe, which can remove foreign matter in the exhaust gas; the first control air valve and the third control air valve are respectively located in the air outlet pipe and the air supply pipe.

[0007] In which, the material drying space movement multi-mode system includes a material rotating and rising drying unit, a tray rotating drying unit and a detachable drum space rotating drying unit, which can cooperate with the cavity telescopic unit to realize independent drying work; the material rotating and rising drying unit includes a pneumatic rotating mechanism and an electromagnetic four-rod lifting mechanism, the pneumatic rotating mechanism includes a third material tray, a rotating shaft, a rotating frame, a positioning shaft, an air compressor, an air delivery pipe, a pipeline expansion joint, a nozzle device, a one-way bearing, a fan blade, an air tank and a fourth control air valve, the third material tray is fixedly connected to the upper side of the rotating shaft, the fan blade is located on the rotating shaft, the one-way bearing connects the rotating shaft and the rotating frame, and the rotating shaft and the rotating frame are axially positioned by the positioning shaft; the air tank is connected to the rotating frame, the air compressor is connected to the air tank, and the nozzle device is connected to the air tank The gas compressed by the air compressor enters the gas tank, and the compressed gas in the gas tank can flow out through the nozzle device, thereby blowing the fan blades to rotate, thereby driving the rotation of the lifting shaft, and thereby driving the rotation of the third material tray; one side of the air delivery pipe is connected to the gas tank, and the other side is connected to the cavity. When the fourth control air valve is opened, the compressed gas in the gas tank can enter the cavity through the gas delivery pipe; the electromagnetic four-bar lifting mechanism includes a second motor, a base, a driving rod, a driven rod, a fixed slide, a first electromagnet and a second electromagnet, the second electromagnet is connected to the lifting frame, the second motor is connected to the driving rod, one side of the driving rod is connected to the base, one side of the driven rod is connected to the driving rod, and the other side is connected to the first electromagnet, the first electromagnet uses the power provided by the driven rod to move up and down in the fixed slide, thereby driving the up and down movement of the second electromagnet, thereby driving the up and down movement of the lifting frame.

[0008] In which, the tray rotary drying unit includes a first tray rotary drying unit and a second tray rotary drying unit, the first tray rotary drying unit includes the first material tray, a first transmission shaft and a third motor, the second tray rotary drying unit includes the second material tray, a second transmission shaft and a fourth motor, which can realize the rotational movement of the first material tray and the second material tray. Specifically, the third motor is located on the first infrared heating layer, one side of the first transmission shaft is connected to the lower side of the first material tray, and the other side is connected to the third motor. The third motor can drive the rotation of the first material tray through the first transmission shaft; the working principle of the second tray rotary drying unit is the same as that of the first tray rotary drying unit.

[0009] Wherein, the detachable drum space rotary drying unit includes a fifth motor, a first planetary gear set, a second planetary gear set, a third planetary gear set, a fourth planetary gear set, a first universal joint, a second universal joint, a roller set, a first disassembly bolt, a second disassembly bolt, and a second planetary gear set transmission shaft; the first, second, third, and fourth planetary gear sets have the same structure, including a planetary carrier, a sun gear, a first planetary gear, a second planetary gear, a third planetary gear and a gear ring; one side of the first universal joint and the second universal joint are provided with through holes, and the first disassembly bolt and the second disassembly bolt can cooperate with the through holes; the roller set includes a first roller, a second roller, and a third roller, and the first roller, the second roller, and the third roller are respectively connected to the centers of the planetary gears in the third planetary gear set and the fourth planetary gear set on both sides; the fifth motor is connected to the sun gear in the second planetary gear set through the transmission shaft of the second planetary gear set, and one side of the second universal joint is connected to the second The sun gear in the planetary gear set is connected, and one side is connected to the sun gear in the fourth planetary gear set. The fifth motor drives the sun gear in the second planetary gear set to rotate, and drives the sun gear in the fourth planetary gear set to rotate through the second universal joint. The rotation of the sun gear in the fourth planetary gear set drives the planetary gears in the fourth planetary gear set to rotate. The rotation of the planetary gears can drive the self-rotation of the first roller, the second roller and the third roller; the self-rotation of the first roller, the second roller and the third roller can drive the planetary gears in the third planetary gear set to rotate, and the rotation of the planetary gears in the third planetary gear set can drive the sun gear in the third planetary gear set to rotate. One side of the first universal joint is connected to the sun gear in the third planetary gear set, and the other side is connected to the planetary gears in the first planetary gear set. The rotation of the sun gear in the third planetary gear set can drive the planetary gears in the first planetary gear set to perform circular rotation through the first universal joint, so as to realize the rotation of the roller set around the center line of the transmission shaft of the second planetary gear set.

[0010] In particular, the multi-mode drying system includes the microwave drying device, infrared drying device, heat pump dehumidification drying device, and negative pressure device, which are combined with each other to form a combination of the two drying modes. When the first, second, third, and fourth control valves are closed, the negative pressure device operates to make the cavity reach a negative pressure state, forming a combination of "microwave-negative pressure-infrared", "microwave-negative pressure", and "infrared-negative pressure" drying modes. When the first, second, and third control valves are opened and the fourth control valve is closed, the negative pressure device does not operate to make the cavity reach a normal pressure state, allowing hot air to enter the telescopic drying cavity, forming a combination of "microwave-infrared-hot air", "microwave-hot air", "infrared-hot air", and "hot air" drying modes. When the first, second, and third control valves are closed and the fourth control valve is intermittently opened and closed under the control of the monitoring and control system, the negative pressure device operates to make the cavity reach a "negative pressure-instantaneous normal pressure" state, realizing the "microwave-infrared-expansion", "microwave-expansion", and "infrared-expansion" drying modes.

[0011] Among them, the real-time material color monitoring system includes a first camera, a second camera and a third camera. The first camera is located on the infrared housing, the second camera is located on the second infrared protective cover, and the third camera is located on the third infrared protective cover. The images taken by the cameras will be displayed on the control adjustment screen. The real-time color changes of the materials can be understood based on the captured images, and the power of the microwave drying device, infrared drying device and heat pump dehumidification drying device can be adjusted.

[0012] Among them, the dielectric properties real-time monitoring system includes a dielectric sensor probe, which can feed back the changes of the material during the drying process to the control adjustment screen, and can monitor the changes of the dielectric properties of the material during the drying process in real time. According to the changes in the dielectric properties, the power of the microwave drying device, infrared drying device and heat pump dehumidification drying device can be adjusted to save energy and reduce consumption.

[0013] The present invention provides a multi-mode uniform drying device, which can realize microwave drying, heat pump drying, infrared drying and negative pressure conditions, as well as any combination of drying except heat pump drying and negative pressure conditions, breaking through the limitations of traditional single drying methods; at the same time, the material has three movement modes in the cavity, each of which can be operated independently, providing multiple scenarios for drying materials and greatly improving the uniformity of material drying; the equipment provided by the present invention is suitable for drying water-containing materials and has a wide range of applications, including but not limited to grains, fruits and vegetables, and Chinese herbal medicines. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the present invention or related technologies, a brief introduction is given below to the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is a front view of the appearance of a multi-mode uniform drying device provided by the present invention.

[0016] Figure 2 It is a front view of the internal structure of a multi-mode uniform drying device provided by the present invention.

[0017] Figure 3 This is a right view of the internal structure of a multi-mode uniform drying device provided by the present invention.

[0018] Figure 4 It is a structural schematic diagram of the material rotary ascending drying unit provided by the present invention.

[0019] Figure 5 It is a cross-sectional view of the mobile infrared heating unit provided by the present invention.

[0020] Figure 6 It is a structural schematic diagram of the detachable drum rotation motion unit provided by the present invention.

[0021] Figure 7 It is a front view of the internal structure of a multi-mode uniform drying device provided by the present invention, which is equipped with a mobile infrared heating unit.

[0022] Figure 8 It is a front view of the internal structure of a multi-mode uniform drying device provided by the present invention, which is equipped with a detachable drum rotation motion unit.

[0023] Figure numerals: 1: cavity; 11: waveguide; 12: multiple solid-state microwave sources; 111: stacking device; 112: cavity door; 113: handle; 114: observation window; 131: hydraulic pump; 132: cylinder; 133: piston rod; 134: oil pipe; 21: infrared housing; 22: infrared heating wire; 23: porous plate; 24: fixed frame; 251: first power connector; 252: second power connector; 26: connector line; 271: first material tray; 272: first infrared energy reflector; 281: second material tray Plate; 282: Second infrared energy reflector; 283: Multiple infrared heating lamps; 291: First power interface; 292: Second power interface; 3: Gas filter; 31: Blower; 311: Air duct; 312: Air outlet; 313: Air inlet; 32: Compressor; 321: Condenser; 322: Evaporator; 323: Heat pump pipeline; 33: First motor; 34: Electric heater; 35: First control valve; 36: Second control valve; 37: Gas recovery pipe; 38: Third control valve; 39: Pipe expansion joint; 4 1: Air compressor; 411: Nozzle device; 412: Air tank; 42: Fourth control valve; 43: Fan blade; 44: Rotation shaft; 45: One-way bearing; 46: Rotation frame; 47: Positioning shaft; 48: Third material tray; 51: Second motor; 52: Drive rod; 53: Driven rod; 54: Base; 55: Fixed slide; 56: First electromagnet; 57: Second electromagnet; 61: First transmission shaft; 62: Third motor; 63: Second transmission shaft; 64: Fourth motor; 71: Fifth motor; 72: First universal joint ; 73: Second universal joint; 741: First roller; 742: Second roller; 743: Third roller; 751: Planet carrier; 752: Sun gear; 753: First planetary gear; 754: Second planetary gear; 755: Third planetary gear; 756: Gear ring; 76: First disassembly bolt; 77: Second planetary gear set drive shaft; 78: Second disassembly bolt; 81: Vacuum pump; 82: Vacuum pipe; 9: Control and adjustment screen; 91: First camera; 92: Second camera; 93: Third camera; 94: Dielectric sensing probe. Implementation Method

[0024] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on the specific circumstances.

[0026] In the description of the embodiments of the present invention, it should be noted that the terms "center," "upper," "lower," "front," "back," "vertical," "horizontal," "top," "bottom," "inside," "outside," and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the embodiments of the present invention and to simplify the description. They do not indicate or imply that the devices or units referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the embodiments of the present invention. In addition, the terms "first," "second," and the like are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] The following combination Figures 1-8 A multi-mode uniform drying apparatus of the present invention is described.

[0028] According to an embodiment of the present invention, Figure 1-8 As shown in the figure, the present invention provides a multi-mode uniform drying device, which mainly includes a microwave drying device, an infrared drying device, a heat pump dehumidification drying device, a negative pressure device, an exhaust gas recovery device, a monitoring and control system, and a multi-mode drying system. The microwave drying device includes a cavity 1, a cavity telescopic unit, a waveguide 11, and multiple solid-state microwave sources 12. The cavity 1 includes a stacking device 111, a cavity door 112, a handle 113, and an observation window 114. The bottom and top of the cavity 1 are provided with ventilation holes. The multiple solid-state microwave sources 12 are connected to the cavity 1 through the waveguide 11. The waveguide 11 is trumpet-shaped and can achieve directional gain of microwaves. The telescopic drive device includes a hydraulic pump 131, an oil pipe 134, a cylinder 132, a piston rod 133, and a fixed slide 49. The cylinder 132 is fixed on the fixed slide. One side of the piston rod 133 is connected to the bottom of the cavity 1, which can push the cavity 1 to telescope.

[0029] The infrared drying device includes a fixed infrared heating unit, a mobile infrared heating unit, a first power connection port 291, and a second power connection port 292. The fixed infrared heating unit is located above the cavity 1 and is composed of an infrared housing 21, an infrared heating wire 22, and a porous plate 23. The mobile infrared heating unit includes a fixed frame 24, a first power connection head 251, a second power connection head 252, a connector line 26, a first infrared heating group and a second infrared heating group; the first infrared heating group includes a first infrared heating layer, a first material tray 271, and a first infrared energy reflection cover 272; the second infrared heating group includes a second infrared heating layer, a second material tray 271, and a first infrared energy reflection cover 272. Tray 281, second infrared energy reflection cover 282, wherein the first infrared heating layer and the second infrared heating layer have the same components, including multiple heating lamps 283; the first infrared energy reflection cover 272 and the second infrared energy reflection cover 282 can reflect the energy generated by the multiple infrared heating lamps 283 to the surface of the first material tray 271 and the second material tray 281, and grooves are provided on the inner side to facilitate the flow of condensed water droplets generated during the drying process; when the first power connector 251 and the second power connector 252 are connected to the first power connection port 291 and the second power connection port 292, they can provide power and control signals for the mobile infrared heating unit to work.

[0030] The heat pump dehumidification and drying device includes a hot air heating and dehumidification unit, a waste heat recovery unit and a gas filter 3; wherein the hot air heating and dehumidification unit includes a blower 31, an air supply pipe 311, an air outlet pipe 312, an air inlet 313, a compressor 32, a condenser 321, an evaporator 322, a heat pump pipe 323, a first motor 33, an electric heater 34, a first control air valve 35, a third control air valve 38 and a pipe expansion joint 39; the waste heat recovery unit includes a second control air valve 36 and a gas recovery pipe 37; the gas filter 3 is located in the air outlet pipe 312, and the first control air valve 35, the second control air valve 36 and the third control air valve 38 are respectively located in the air outlet pipe 312, the gas recovery pipe 37 and the air supply pipe 311; the compressor 32 is connected to the condenser 321 and the evaporator 322 through the heat pump pipe 323 The high-temperature and high-pressure refrigerant compressed by the compressor 32 enters the condenser 321, heating the air around the condenser 321, and the refrigerant passing through the condenser 321 returns to the evaporator 322. The condenser evaporated by the evaporator 322 enters the compressor 32 again to start the next cycle; the blower 31 is connected to the electric heater 34 and the condenser 321 through the air delivery pipe 311 in succession, and the gas generated by the blower 31 is heated by the electric heater 34 and the condenser 321 and transported to the cavity 1, and the gas recovery pipe 37 is connected to the air inlet 313 through the evaporator 322, and the hot and humid gas discharged by the outlet pipe 312 can enter the gas recovery pipe 37, and the gas after dehumidification by the evaporator 322 re-enters the air inlet 313, realizing heat recovery, dehumidification and recycling of the hot and humid gas.

[0031] The material rotating and rising drying unit includes a pneumatic rotating mechanism and an electromagnetic four-rod lifting mechanism, wherein the pneumatic rotating mechanism includes an air compressor 41, a nozzle device 411, an air storage tank 412, an air pipe 413, a pipeline expansion joint 39, a fourth control air valve 42, a fan blade 43, a rotating shaft 44, a one-way bearing 45, a rotating frame 46, a positioning shaft 47 and a third material tray 48; the third material tray 48 is fixedly connected to the upper side of the rotating shaft 44, the fan blade 43 is located on the rotating shaft 44, the one-way bearing 45 connects the rotating shaft 44 and the rotating frame 46, and the rotating shaft 44 and the rotating frame 46 are axially positioned by the positioning shaft 47; the air storage tank 412 is connected to the rotating frame 46, the air The compressor 41 is connected to the air tank 412, and the nozzle device 411 is connected to the air tank 412; the gas compressed by the air compressor 41 enters the air tank 412, and on the one hand, it can be blown out through the nozzle device 411, blowing the fan blades 43 to move, driving the lifting shaft 44 to rotate, and then driving the third material tray 48 to rotate. The lower side of the lifting shaft 44 is connected to the lifting frame 46 through a one-way bearing 45. The rotation of the lifting shaft 44 will not drive the rotation of the lifting frame 46; on the other hand, it can enter the air tank 412 for storage. If the interior of the cavity 1 is in a negative pressure state, the fourth control air valve 42 is opened, and the gas in the air tank 412 will enter the cavity 1 through the air pipe 413, so that the internal air pressure rises rapidly, which can make the material in the negative pressure state achieve the effect of puffing.

[0032] The motor four-bar drive mechanism includes a second motor 51, a driving rod 52, a driven rod 53, a base 54, a fixed slide 55, a first electromagnet 56 and a second electromagnet 57; the second electromagnet 57 is connected to the rotating frame 46, the second motor 51 is connected to the driving rod 52, one side of the driving rod 52 is connected to the base 54, one side of the driven rod 53 is connected to the driving rod 52, and the other side is connected to the first electromagnet 56, the first electromagnet 56 can use the power provided by the driven rod 53 to move up and down in the fixed slide 55, thereby driving the second electromagnet 57 to move up and down, and then driving the rotating frame 46 to move up and down.

[0033] The tray rotary drying unit includes a first tray rotary drying unit and a second tray rotary drying unit. The first tray rotary drying unit includes the first material tray 271, the first transmission shaft 61 and the third motor 62. The second tray rotary drying unit includes the second material tray 281, the second transmission shaft 63 and the fourth motor 64, which can realize the rotational movement of the first material tray 271 and the second material tray 281. Specifically, the third motor 62 is located on the first infrared heating layer, and one side of the first transmission shaft 61 is connected to the lower side of the first material tray 271 and the other side is connected to the third motor 62. The third motor 62 can drive the rotation of the first material tray 271 through the first transmission shaft 61; the fourth motor 64 is located on the second infrared heating layer, and one side of the second transmission shaft 63 is connected to the lower side of the second material tray 281 and the other side is connected to the fourth motor 64. The fourth motor 64 can drive the rotation of the second material tray 281 through the second transmission shaft 63.

[0034] The detachable drum rotation motion unit includes a fifth motor 71, a first universal joint 72, a second universal joint 73, a drum set 74, a first planetary gear set, a second planetary gear set, a third planetary gear set, a fourth planetary gear set, a first disassembly bolt 76, a second disassembly bolt 78, and a second planetary gear set transmission shaft 77; wherein the first disassembly bolt 76 and the second disassembly bolt 78 can be matched with the through holes on one side of the first universal joint 72 and the second universal joint 73, so as to facilitate the installation and disassembly of the third planetary gear set, the fourth planetary gear set and the drum set 74 as a whole; wherein the drum set 74 is composed of the first drum 741, the second drum 742, and the third roller 743; the first planetary gear set, the second planetary gear set, the third planetary gear set, and the fourth planetary gear set are composed of the same composition, including a planet carrier 751, a sun gear 752, a first planetary gear 753, a second planetary gear 754, a third planetary gear 755, and a gear ring 756; the fifth motor 71 is connected to the sun gear at the center of the second planetary gear set; the first roller 741, the second roller 742, and the third roller 743 constituting the roller set 74 are respectively connected to the centers of the three planetary gears in the third planetary gear set on the left, and are respectively connected to the centers of the three planetary gears in the fourth planetary gear set on the right. The center of one planetary gear in the first planetary gear set is connected to the sun gear in the center of the third planetary gear set through the first universal joint 72, and the center of the sun gear in the second planetary gear set is connected to the center of the sun gear in the fourth planetary gear set through the second universal joint 73; the fifth motor 71 can drive the sun gear in the second planetary gear set to rotate, and the sun gear in the second planetary gear set drives the sun gear in the fourth planetary gear set to rotate through the second universal joint 73, thereby driving the three planetary gears in the fourth planetary gear set to perform circular rotation, thereby driving the first roller 741, the second roller 742, and the third roller 743 to rotate. The self-rotating circular motion, the movement of the first roller 741, the second roller 742, and the third roller 743 drives the three planetary gears in the third planetary gear set to perform a circular rotation motion, and then drives the sun gear in the third planetary gear set to rotate. The rotation of the sun gear in the third planetary gear set drives the planetary gears in the first planetary gear set to perform a circular rotation motion through the first universal joint 72; in this combined motion mode, the first roller 741, the second roller 742, and the third roller 743 can not only perform self-rotating circular motion, but the entire roller group 74 can also rotate around the center line of the transmission shaft of the second planetary gear set.

[0035] The negative pressure device includes a vacuum pump 81, a vacuum pipe 82 and a pipe expansion joint 39; one side of the vacuum pipe 82 is connected to the vacuum pump 81, and the other side is connected to the cavity 1 through the pipe expansion joint 39; when the vacuum pump is working, the first control valve 35, the second control valve 36, the third control valve 38 and the fourth control valve 42 are all closed, so that the interior of the cavity 1 reaches a closed state.

[0036] The monitoring and control system includes a real-time monitoring unit for material color, a real-time monitoring unit for dielectric properties, and a control and adjustment screen 9; the real-time monitoring unit for material color includes a first camera 91, a second camera 92, and a third camera 93; the first camera 91 is located at the top of the cavity 1, at the center of the infrared housing 21. When the roller group 74, the third planetary gear group, and the fourth planetary gear group are removed, the color changes of the material in the third material tray 48 can be photographed; the second camera 92 and the third camera 93 are respectively located at the center of the first infrared energy reflection cover 272 and the second infrared energy reflection cover 282 in the mobile infrared heating unit; when the first power connector 251 and the second power connector 252 are connected to the first power connection port 291 and the second power connection port 292, power can be provided for the operation of the mobile infrared heating unit, and the second camera 92 and the third camera 93 can photograph the color changes of the material in the first material tray 271 and the second material tray 281.

[0037] The dielectric property real-time monitoring unit includes a dielectric sensor probe 94 ; the dielectric sensor probe 94 is located inside the third material tray 48 , and can detect the dielectric value of the material in the first material tray during the drying process and transmit it to the control adjustment screen 9 .

[0038] The working principle of a multi-mode uniform drying device provided by the present invention is described below. It mainly includes: before starting work, adjusting the desired working parameters through the control adjustment screen 9; the positions where the material can be placed are the first material tray 271, the second material tray 281, the third material tray 48 and the first roller 741, the second roller 742, and the third roller 743; when the material is placed in the third material tray 48, the material rotation and rising drying unit is started, and the material can rotate and rise in space with the third material tray 48 in the cavity 1; when the material is placed on the first roller 741, the second roller 742, and the third roller 743, the material can rotate and rise in space with the third material tray 48. 742 and the third roller 743, the fifth motor is started, driving the spatial movement of the first roller 741, the second roller 742 and the third roller 743, and the material can move in space with the first roller 741, the second roller 742 and the third roller 743; when the material is placed on the first material tray 271 and the second material tray 281, the first power connector 251 and the second power connector 252 are connected to the first power connector 291 and the second power connector 292, and the tray rotation drying unit is started, and the material can move in space with the first material tray 271 and the second material tray 281.

[0039] The present invention provides a multi-mode uniform drying equipment, which emits microwaves to the material through a microwave drying device to provide internal heat energy for the material; provides external heat energy for the material through an infrared drying device; provides high-temperature fluid to the inside of the cavity 1 through a heat pump dehumidification drying device to take away the hot and humid air in the cavity 1; the pressure in the cavity 1 can be reduced by a negative pressure device, so that the temperature of the material will not be too high during the drying process; the wind generated by the blower 31 is heated by the electric heater 34 and the condenser 321 and flows through the cavity 1, and is filtered and discharged from the air outlet pipe 312 through the gas filter 3. In conjunction with the microwave drying device and the infrared drying device, drying modes such as "microwave-infrared-hot air", "microwave-hot air", "infrared-hot air" and "hot air" can be formed; the first control valve 35 and the second control valve 35 are used. The gas control valve 36, the third control gas valve 38 and the fourth control gas valve 42 are closed, and the negative pressure device is working to form a negative pressure in the cavity 1. In conjunction with the microwave drying device and the infrared drying device, "microwave-negative pressure-infrared", "microwave-negative pressure" and "infrared-negative pressure" drying modes can be formed; when the negative pressure device is working, the fourth control gas valve 42 can also be controlled to open, so that the gas in the gas storage tank 412 enters the cavity 1. In conjunction with the microwave drying device and the infrared drying device, "microwave-infrared-puffing", "microwave-puffing" and "infrared-puffing" drying modes can be realized; the equipment has a variety of material spatial movement modes and a variety of drying process modes. The multiple spatial position movement modes of the material and the multiple drying process modes can be combined with each other to realize a multi-mode uniform drying method.

Claims

1. A multi-mode uniform drying device, characterized in that: include: Microwave drying device, infrared drying device, heat pump dehumidification drying device, negative pressure device, monitoring and control system and multi-mode drying system; the microwave drying device includes a cavity, a cavity expansion unit, a waveguide, and multiple solid-state microwave sources. The multiple solid-state microwave sources are located on one side of the cavity and are connected to the cavity through the waveguide. The cavity expansion unit includes a stacking device and a driving device. The driving device includes a hydraulic oil tank, a hydraulic pump, an oil pipe, and a hydraulic cylinder. The infrared drying device includes a fixed infrared heating unit, a mobile infrared heating unit, a first power connection port and a second power connection port. The fixed The infrared heating unit is located on one side of the cavity, including an infrared housing, an infrared heating wire, and a porous plate. The first power connection port and the second power connection port are located on the upper side of the cavity; the heat pump dehumidification and drying device includes a hot air heating and dehumidification unit, a waste heat recovery unit, and a gas filter; the negative pressure device includes a vacuum pump, a vacuum pipe, and a pipe expansion joint. The vacuum pump is located on one side outside the cavity, the first side of the vacuum pipe is connected to the vacuum pump, and the second side is connected to the cavity through the pipe expansion joint; the multi-mode drying system includes a material drying space movement multi-mode system and a drying method multi-mode system. The inter-motion multi-mode system includes a material rotating and rising drying unit, a tray rotating drying unit and a detachable drum space rotating drying unit, which can cooperate with the cavity telescopic unit to realize independent drying work; the material rotating and rising drying unit includes a pneumatic rotating mechanism and an electromagnetic four-rod lifting mechanism, the pneumatic rotating mechanism includes a third material tray, a rotating shaft, a rotating frame, a positioning shaft, an air compressor, an air delivery pipe, a pipe expansion joint, a nozzle device, a one-way bearing, a fan blade, an air storage tank and a fourth control air valve, the third material tray is fixedly connected to the upper side of the rotating shaft, the fan blade is located on the rotating shaft, the The one-way bearing connects the lifting shaft and the lifting frame, and the lifting shaft and the lifting frame are axially positioned by the positioning shaft; the air tank is connected to the lifting frame, the air compressor is connected to the air tank, and the nozzle device is connected to the air tank. The gas compressed by the air compressor enters the air tank, and the compressed gas in the air tank can flow out through the nozzle device, thereby blowing the fan blades to rotate, thereby driving the lifting shaft to rotate, and thereby driving the third material tray to rotate; one side of the air delivery pipe is connected to the air tank, and the other side is connected to the cavity. When the fourth control air valve is opened, the compressed gas in the air tank can enter the cavity through the air delivery pipe;The electromagnetic four-bar lifting mechanism includes a second motor, a base, a driving rod, a driven rod, a fixed slide, a first electromagnet and a second electromagnet. The second electromagnet is connected to the rotating frame, the second motor is connected to the driving rod, one side of the driving rod is connected to the base, one side of the driven rod is connected to the driving rod, and the other side is connected to the first electromagnet. The first electromagnet uses the power provided by the driven rod to move up and down in the fixed slide, thereby driving the second electromagnet to move up and down, thereby driving the rotating frame to move up and down. The multi-mode drying system includes the microwave drying device, the infrared drying device, the heat pump dehumidification drying device, and the negative pressure device. When the first, second, third and fourth control valves are closed, the negative pressure device works to make the cavity reach a negative pressure state, forming a "microwave drying device". Combinations of "negative pressure-infrared," "microwave-negative pressure," and "infrared-negative pressure" drying modes are available. When the first, second, and third control valves are open and the fourth control valve is closed, the negative pressure device is deactivated, causing the cavity to reach normal pressure, allowing hot air to enter the telescopic drying chamber, resulting in combinations of "microwave-infrared-hot air," "microwave-hot air," "infrared-hot air," and "hot air" drying modes. When the first, second, and third control valves are closed and the fourth control valve is intermittently opened and closed under the control of the monitoring and control system, the negative pressure device is activated, causing the cavity to reach a "negative pressure-instantaneous normal pressure" state, achieving the "microwave-infrared-expansion," "microwave-expansion," and "infrared-expansion" drying modes. The monitoring and control system includes a real-time material color monitoring unit, a real-time dielectric property monitoring unit, and a control and adjustment screen.

2. The multi-mode uniform drying device according to claim 1, characterized in that: The mobile infrared heating unit includes a fixed frame, a first infrared heating group, a second infrared heating group, a first power connector and a second power connector; the first infrared heating group includes a first infrared heating layer, a first material tray and a first infrared energy reflection cover; the second infrared heating group includes a second infrared heating layer, a second material tray and a second infrared energy reflection cover; the first infrared heating layer and the second infrared heating layer each include a plurality of infrared heating tubes; the first material tray is located on the upper side of the first infrared heating layer, and the first infrared reflection cover is located on the upper side of the first material tray, and the first infrared reflection cover can reflect the infrared energy released by the first infrared heating layer to the surface of the first material tray; the second infrared heating group has the same working principle as the first infrared heating group; the first power connector and the second power connector can be connected to the first power connection port and the second power connection port to provide power and control signals for the mobile infrared heating unit.

3. The multi-mode uniform drying device according to claim 1, characterized in that: The hot air heating and dehumidification unit includes a blower, an air inlet, a compressor, a first motor, a condenser, an evaporator, an electric heater, a heat pump pipeline, an air supply pipe, an air outlet pipe and a pipeline expansion joint, a first control air valve and a third control air valve; the gas generated by the blower is heated by the electric heater and the condenser and then transported to the cavity via the air supply pipe; the waste heat recovery unit includes a gas recovery pipe and a second control air valve, and the hot and humid gas discharged from the air outlet pipe can be transported to the evaporator via the second control air valve and the gas recovery pipe. The gas dehumidified by the evaporator re-enters the air inlet through the gas recovery pipe, thereby realizing heat recovery, dehumidification and recycling of the hot and humid gas; the gas filter is located in the air outlet pipe and can remove foreign matter in the exhaust gas.

4. The multi-mode uniform drying device according to claim 2, characterized in that: The tray rotary drying unit includes a first tray rotary drying unit and a second tray rotary drying unit. The first tray rotary drying unit includes the first material tray, a first transmission shaft and a third motor. The second tray rotary drying unit includes the second material tray, a second transmission shaft and a fourth motor, which can realize the rotational movement of the first material tray and the second material tray. Specifically, the third motor is located on the first infrared heating layer, one side of the first transmission shaft is connected to the lower side of the first material tray, and the other side is connected to the third motor. The third motor can drive the rotation of the first material tray through the first transmission shaft; the working principle of the second tray rotary drying unit is the same as that of the first tray rotary drying unit.

5. The multi-mode uniform drying device according to claim 1, characterized in that: The detachable drum space rotary drying unit includes a fifth motor, a first planetary gear set, a second planetary gear set, a third planetary gear set, a fourth planetary gear set, a first universal joint, a second universal joint, a roller set, a first disassembly bolt, a second disassembly bolt, and a second planetary gear set transmission shaft; the first, second, third, and fourth planetary gear sets have the same structure, including a planetary carrier, a sun gear, a first planetary gear, a second planetary gear, a third planetary gear, and a gear ring; one side of the first universal joint and the second universal joint are provided with through holes, and the first disassembly bolt and the second disassembly bolt can cooperate with the through holes; the roller set includes a first roller, a second roller, and a third roller, and the first roller, the second roller, and the third roller are respectively connected to the centers of the planetary gears in the third planetary gear set and the fourth planetary gear set on both sides; the fifth motor is connected to the sun gear in the second planetary gear set through the transmission shaft of the second planetary gear set, and one side of the second universal joint is connected to the second The sun gear in the planetary gear set is connected, and one side is connected to the sun gear in the fourth planetary gear set. The fifth motor drives the sun gear in the second planetary gear set to rotate, and drives the sun gear in the fourth planetary gear set to rotate through the second universal joint. The rotation of the sun gear in the fourth planetary gear set drives the planetary gears in the fourth planetary gear set to rotate. The rotation of the planetary gears can drive the self-rotation of the first roller, the second roller and the third roller; the self-rotation of the first roller, the second roller and the third roller can drive the planetary gears in the third planetary gear set to rotate, and the rotation of the planetary gears in the third planetary gear set can drive the sun gear in the third planetary gear set to rotate. One side of the first universal joint is connected to the sun gear in the third planetary gear set, and the other side is connected to the planetary gears in the first planetary gear set. The rotation of the sun gear in the third planetary gear set can drive the planetary gears in the first planetary gear set to perform circular rotation through the first universal joint, so as to realize the rotation of the roller set around the center line of the transmission shaft of the second planetary gear set.

6. The multi-mode uniform drying device according to claim 1, characterized in that: The real-time material color monitoring system includes a first camera, a second camera and a third camera. The first camera is located on the infrared housing, the second camera is located on the second infrared protective cover, and the third camera is located on the third infrared protective cover. The images captured by the cameras will be displayed on the control adjustment screen. The real-time color changes of the materials can be understood based on the captured images, and the power of the microwave drying device, the infrared drying device and the heat pump dehumidification drying device can be adjusted.

7. The multi-mode uniform drying device according to claim 1, characterized in that: The dielectric property real-time monitoring system includes a dielectric sensor probe, which can feed back changes in the material during the drying process to the control adjustment screen, and can monitor the changes in the dielectric properties of the material during the drying process in real time. According to the changes in the dielectric properties, the power of the microwave drying device, infrared drying device and heat pump dehumidification drying device can be adjusted to save energy and reduce consumption.

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