Belt type continuous microwave drying device

Abstract

The utility model relates to a belt type continuous microwave drying device which comprises a frame body, a feeding module, a preheating module and a drying module. The feeding module comprises a conveying belt arranged on the frame body, and the conveying belt extends along the conveying path of materials. The preheating module is arranged corresponding to the front section of a material conveying path; and the drying module is arranged corresponding to the rear section of the material conveying path. The conveyor belt is heated through the preheating module, materials on the conveyor belt are further heated, the volatilization speed of water from the materials can be increased, and the conveyor belt can evaporate the water, retained on the conveyor belt, of the materials through heating; the condition that subsequent materials are in contact with the retained water due to the fact that the water is retained on the conveying belt in the material conveying process is reduced; the drying module comprises a microwave drying assembly and an infrared drying assembly, and the microwave drying assembly and the infrared drying assembly are adjacently arranged to continuously dry the materials, so that the drying efficiency is improved, the drying speed is increased, and the waiting time is shortened.

Description

Technical Field

[0001] The present disclosure relates to the technical field of drying, and in particular to a belt-type continuous microwave drying device. Background Art

[0002] As a basic technology, drying technology has been widely used and developed, and the application prospects of drying technology are also very broad. As a very important link in many production processes, the selection of drying methods and drying equipment will have a great impact on the output and quality of the target product, as well as the human, material and energy consumption during the drying process. Microwave drying is a new type of drying method. The current microwave drying device usually uses two sets of microwave drying equipment for continuous drying. However, using two sets of microwave drying equipment to continuously dry materials is prone to form hot spots, resulting in over-drying of some materials and insufficient drying of some materials.

[0003] According to the search, in the prior art, for example, patent CN201720695418.8 discloses a far-infrared drying device for lotus Pu'er tea, including a microwave drying chamber, a microwave generator, a loading barrel, a feeding port, a hoist, a conveying plate, a feeding port, an upper far-infrared dryer, a temperature controller, a cooling chamber, a heat dissipation strip, a collection box, a first conveyor belt, a connecting block, a tray, an elastic base, a vibrator, a far-infrared drying chamber, a strong spring, a partition, a second conveyor belt, a roller, materials, a feeder and a side far-infrared dryer. A microwave generator is installed above the microwave drying chamber, a loading barrel is provided on the right side of the microwave generator, a conveying plate is installed inside the hoist, and a temperature controller is installed near the top of the far-infrared drying chamber. The above-mentioned far-infrared drying device for lotus Pu'er tea still has the following defects in practical applications:

[0004] The material is dried for the first time in a microwave drying chamber, and then is transferred to a far-infrared drying chamber for the second time through a conveyor belt and a lifting device. Microwave drying and infrared drying are used to dry the material, but the two drying chambers are separated by a conveyor belt and a lifting device, which makes the distance between the two drying chambers far. After the first drying, there is still residual moisture on the surface of the material, and the material may retain the residual moisture on the conveyor belt and the lifting device, so that subsequent materials will touch the retained moisture when passing through the conveyor belt and the lifting device; it may also cause part of the material to be over-dried, while the other part still has a high humidity, resulting in uneven drying; and the material needs to go through a longer drying time to reach the desired degree of dryness, which makes the drying speed slower; and more devices are added, which will increase energy consumption and equipment maintenance costs. Utility Model Content

[0005] In order to solve the problems existing in the above-mentioned prior art, the present disclosure aims to provide a belt-type continuous microwave drying device. The belt-type continuous microwave drying device comprises a frame, a feeding module, a preheating module and a drying module. The feeding module comprises a conveyor belt arranged on the frame, and the conveyor belt is extended along the material conveying path; the preheating module is arranged corresponding to the front section of the material conveying path, and the preheating module comprises a connected heat energy component and a heat transfer component. The heat transfer component comprises a heat transfer plate in thermal contact with the conveyor belt, which is used to preheat the material. The conveyor belt is heated by the preheating module, and the material on the conveyor belt is further heated, which can accelerate the volatilization speed of water from the material. The conveyor belt can evaporate the water retained on the conveyor belt by heating, thereby reducing the situation that the water retained on the conveyor belt during the material conveying process causes the subsequent material to contact the retained water; and the microwave drying component and the infrared drying component are arranged adjacent to each other to continuously dry the material, which can give full play to the advantages of the two drying methods, improve the drying efficiency, and can also make up for the shortcomings of the two drying methods to a certain extent, thereby improving the drying quality; and the material can undergo the two drying methods in a short time, which speeds up the drying speed and reduces the waiting time.

[0006] The belt-type continuous microwave drying device disclosed in the present invention comprises a frame, a feeding module, a preheating module and a drying module;

[0007] The feeding module comprises a conveyor belt arranged on the frame, and the conveyor belt is extended along the conveying path of the material;

[0008] The preheating module is arranged corresponding to the front section of the material conveying path, and the preheating module includes a thermal energy component and a heat transfer component which are connected, and the heat transfer component includes a heat transfer plate which is in thermal contact with the conveyor belt and is used for preheating the material;

[0009] The drying module is arranged corresponding to the rear section of the material conveying path, and comprises a microwave drying component and an infrared drying component, and the microwave drying component and the infrared drying component are arranged adjacent to each other on the conveyor belt along the material conveying direction.

[0010] Preferably, the frame has a roller corresponding to the front section of the material conveying path, and the roller is located above the conveyor belt and is used to flatten the material on the conveyor belt.

[0011] Preferably, the conveyor belt includes a first conveying section, a transition section and a second conveying section in sequence along the material conveying direction. The first conveying section and the second conveying section are both extended horizontally, and the plane where the first conveying section is located is higher than the plane where the second conveying section is located. The two ends of the transition section are respectively connected to the first conveying section and the second conveying section.

[0012] Preferably, the thermal energy component comprises a heat collecting lens and a heat collecting container, wherein the heat collecting lens is arranged above the heat collecting container, and the heat collecting lens is used to transfer heat to the heat collecting container.

[0013] Preferably, the heat transfer component also has a first circulation pipe and a second circulation pipe, and the first circulation pipe and the second circulation pipe are both connected to the heat collection container through a first connecting pipe; the first circulation pipe and the second circulation pipe are respectively arranged below the first conveying section and the second conveying section to preheat the material before entering the drying module.

[0014] Preferably, the heat transfer plate includes a first heat plate and a second heat plate, the first heat plate is located between the first circulation pipe and the first conveying section, the first heat plate is used to heat the material passing through the first conveying section, the second heat plate is located between the second circulation pipe and the second conveying section, the second heat plate is used to heat the material passing through the second conveying section and before reaching the drying module.

[0015] Preferably, the microwave drying assembly and the infrared drying assembly are arranged in sequence along the conveying path of the material, so that the material first passes through the microwave drying assembly and then passes through the infrared drying assembly.

[0016] Preferably, the feeding module further comprises a power assembly, and the power assembly is arranged on one side of the frame body for providing power for the movement of the conveyor belt.

[0017] Preferably, a feed bin is provided above the conveyor belt, located at an initial position of the material conveying path.

[0018] The belt-type continuous microwave drying device disclosed in the present invention has the following advantages:

[0019] 1. A belt-type continuous microwave drying device disclosed in the present invention comprises a frame, a feeding module, a preheating module and a drying module. The feeding module comprises a conveyor belt arranged on the frame, and the conveyor belt is extended along the conveying path of the material; the preheating module is arranged corresponding to the front section of the material conveying path, and the preheating module comprises a thermal energy component and a heat transfer component which are connected to each other. The heat transfer component comprises a heat transfer plate which is in thermal contact with the conveyor belt and is used to preheat the material. The conveyor belt is heated by the preheating module, and the material on the conveyor belt is further heated, which can accelerate the volatilization speed of water from the material. The conveyor belt can evaporate the water retained on the conveyor belt by heating, thereby reducing the situation that the water retained on the conveyor belt during the material conveying process causes the subsequent material to contact the retained water; the material is heated by the preheating module, and then combined with the subsequent drying module to improve the overall drying speed; the thermal energy component of the preheating module uses a heat collecting lens to focus solar energy to irradiate into a heat collecting container, thereby heating the medium inside the heat collecting container, so that the preheating module has the characteristics of energy saving and environmental protection.

[0020] 2. A belt-type continuous microwave drying device disclosed in the present invention has a drying module corresponding to the rear section of the material conveying path, and the drying module includes a microwave drying component and an infrared drying component. The microwave drying component and the infrared drying component are adjacently arranged on the conveyor belt along the material conveying direction, and the microwave drying component and the infrared drying component are arranged in sequence along the material conveying path, so that the material first passes through the microwave drying component and then through the infrared drying component for continuous drying. The microwave energy of the microwave drying component can generate a heating effect inside the material to reduce the moisture content of the material, and then the infrared drying component is used to dry the material as a whole; the microwave drying component and the infrared drying component are adjacently arranged to continuously dry the material, which can give full play to the advantages of the two drying methods, improve the drying efficiency, and can also make up for the shortcomings of the two drying methods to a certain extent, thereby improving the drying quality; and the material can undergo the two drying methods in a short time, which speeds up the drying speed and reduces the waiting time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a belt-type continuous microwave drying device disclosed in the present invention;

[0022] Figure 2 It is a schematic diagram of the assembly of a frame and a transmission module of a belt-type continuous microwave drying device disclosed in the present invention;

[0023] Figure 3 yes Figure 2 Exploded view of;

[0024] Figure 4 It is a schematic diagram of the structure of a preheating module of a belt-type continuous microwave drying device disclosed in the present invention;

[0025] Figure 5 It is a schematic diagram of the assembly of a preheating module of a belt-type continuous microwave drying device disclosed in the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of a power component of a belt-type continuous microwave drying device disclosed in the present invention.

[0027] Description of reference numerals:

[0028] 10-frame; 101-roller; 1011-support rod; 1012-roller fastener; 102-first side plate; 103-second side plate; 104-frame extension block;

[0029] 20-feeding module; 201-conveyor belt; 2011-first conveying section; 2012-second conveying section; 202-first rotating shaft; 2021-first pulley; 2022-first thrust ring; 203-second rotating shaft; 2031-second pulley; 2032-second thrust ring; 204-third rotating shaft; 2041-third pulley; 2042-third thrust ring; 205-first roller; 206-second roller; 207-power assembly; 2071-motor; 2072-first gear; 2073-second gear; 2074-track;

[0030] 30-preheating module; 301-thermal energy assembly; 3011-heat collecting lens; 3012-heat collecting container; 3013-lens support frame; 302-first circulation pipeline; 303-second circulation pipeline; 304-first heat plate; 305-second heat plate;

[0031] 40-drying module; 401-microwave drying component; 402-infrared drying component;

[0032] 50-Feeding silo. DETAILED DESCRIPTION

[0033] like Figure 1-Figure 6 As shown, a belt-type continuous microwave drying device disclosed in the present disclosure includes a frame 10, a feeding module 20, a preheating module 30 and a drying module 40;

[0034] The feeding module 20 includes a conveyor belt 201 disposed on the frame 10, and the conveyor belt 201 is extended along the conveying path of the material;

[0035] The preheating module 30 corresponds to the front section of the material conveying path. The preheating module 30 includes a thermal energy component 301 and a heat transfer component that are connected. The heat transfer component includes a heat transfer plate in thermal contact with the conveyor belt 201, which is used to preheat the material. The heat transfer component is used to heat the material before entering the drying module 40, which can accelerate the volatilization rate of water from the material. The conveyor belt 201 can evaporate the water retained on the conveyor belt 201 by heating, thereby reducing the situation in which the water is retained on the conveyor belt 201 during the material conveying process, causing the subsequent material to contact the retained water. The material is heated by the preheating module 30, and then combined with the subsequent drying module 40 to improve the overall drying speed.

[0036] The drying module 40 is arranged corresponding to the rear section of the material conveying path. The drying module 40 includes a microwave drying component 401 and an infrared drying component 402. The microwave drying component 401 and the infrared drying component 402 are arranged adjacent to each other on the conveyor belt 201 along the material conveying direction; the microwave drying component 401 and the infrared drying component 402 are arranged adjacent to each other so that the material can be dried continuously. The microwave energy of the microwave drying component 401 can generate a heating effect inside the material to reduce the moisture content of the material, and then the infrared drying component 402 is used to dry the material as a whole. The continuous drying of the material by the two drying components can give full play to the advantages of the two drying methods, improve the drying efficiency, and make up for the shortcomings of the two drying methods to a certain extent, thereby improving the drying quality; and the material can undergo the two drying methods in a short time, which speeds up the drying speed and reduces the waiting time;

[0037] The microwave drying component 401 is composed of a microwave generating device (magnetron, klystron, etc.), a cooling device, a microwave transmission element, a heater, a control and safety protection system, etc.; the infrared drying component 402 is composed of a heat source and a radiation substrate.

[0038] Furthermore, in this embodiment, the frame 10 has a roller 101 corresponding to the front section of the material conveying path, and the roller 101 is located above the conveyor belt 201 and is used to flatten the material on the conveyor belt 201. The two edges of the frame 10 respectively have vertically arranged support rods 1011, and the two ends of the roller 101 are respectively connected to the support rods 1011 on the two edges of the frame 10, and one end of the roller 101 is fixed to the support rod 1011 by a roller fastener 1012, and the roller fastener 1012 can be a nut. The area where the roller 101 is located is close to the head end of the material movement track, and the material that has just entered the conveyor belt 201 can be arranged and flattened, so that the material will not be accumulated on the conveyor belt 201 for transportation.

[0039] The frame body 10 has a first side plate 102 and a second side plate 103 at the head end corresponding to the material conveying path. The first side plate 102 and the second side plate 103 are respectively connected to two edges of the frame body 10 .

[0040] Furthermore, in the present embodiment, the conveyor belt 201 includes a first conveying section 2011, a transition section, and a second conveying section 2012 in sequence along the material conveying direction. The first conveying section 2011 and the second conveying section 2012 are both horizontally extended, and the plane where the first conveying section 2011 is located is higher than the plane where the second conveying section 2012 is located. The two ends of the transition section are respectively connected to the first conveying section 2011 and the second conveying section 2012, so that the structure where the plane where the first conveying section 2011 is located is higher than the plane where the second conveying section 2012 is located is similar to a "Z" type structure, which is used to turn the material when it falls from the first conveying section 2011 to the second conveying section 2012, so that the material can be evenly conveyed on the conveyor belt 201, thereby improving the uniformity of material drying;

[0041] The conveyor belt 201 has a first rotating shaft 202 and a second rotating shaft 203 at the head end and the end end corresponding to the material conveying path, respectively, and has a first pulley 2021 and a second pulley 2031 connected to the first rotating shaft 202 and the second rotating shaft 203, respectively, the two ends of the first rotating shaft 202 and the second rotating shaft 203 are respectively rotatably connected to the two side edges of the frame 10, and the two side edges of the frame 10 are provided with first through holes adapted to the two ends of the first rotating shaft 202 and the second rotating shaft 203, and the two ends of the first rotating shaft 202 and the second rotating shaft 203 are respectively rotatably connected to the first through holes on the two side edges of the frame 10; the frame 10 can be provided with a frame extension block 104 corresponding to the end of the material conveying path to extend the frame 10, and the two ends of the second rotating shaft 203 are respectively rotatably connected to the frame extension blocks 104 on the two edges;

[0042] A third rotating shaft 204 is provided directly above the first rotating shaft 202, and a third pulley 2041 is provided which is connected to the third rotating shaft 204. The third rotating shaft 204 is parallel to the axis of the first rotating shaft 202, and there is a certain distance between the third rotating shaft 204 and the first rotating shaft 202.

[0043] The third rotating shaft 204 has a first roller 205 at a certain distance along the material conveying direction, and a second roller 206 is provided below the first roller 205. The first roller 205 and the second roller 206 are staggered, and the line between the axis of the first roller 205 and the axis of the second roller 206 has a certain angle with the horizontal direction. The angle between the line between the axis of the first roller 205 and the axis of the second roller 206 and the horizontal direction is A, and A≤90° is satisfied, so that the plane where the first conveying section 2011 of the conveyor belt 201 is located is higher than the plane where the second conveying section 2012 is located, and the transition section of the conveyor belt 201 is between the first roller 205 and the second roller 206, and this structure can change the movement state of the material at the first conveying section 2011 and the second conveying section 2012 of the conveyor belt 201, and can flatten the accumulated materials to reduce the accumulation of materials;

[0044] The conveyor belt 201 is sequentially arranged around the first pulley 1011, the third pulley 1031, the first roller 104, the second roller 105 and the second pulley 1021, so that the conveyor belt 201 forms a transition section between the first roller 104 and the second roller 105, which can make the plane where the first conveying section 2011 is located higher than the plane where the second conveying section 2012 is located, forming the above-mentioned "Z"-shaped structure;

[0045] The two ends of the first rotating shaft 202 extend to be rotatably connected with the first side plate 102 and the second side plate 103 respectively, and the two ends of the third rotating shaft 204, the first roller 205 and the second roller 106 are rotatably connected with the first side plate 102 and the second side plate 103 respectively; the first side plate 102 and the second side plate 103 both have first through holes adapted to the two ends of the first rotating shaft 202, the third rotating shaft 204, the first roller 205 and the second roller 206, so that the two ends of the first rotating shaft 202, the third rotating shaft 204, the first roller 205 and the second roller 206 are rotatably connected with the first through holes on the first side plate 102 and the second side plate 103 respectively;

[0046] The first pulley 1011, the first pulley 2021, the second pulley 2031 and the third pulley 2041 have a first thrust ring 2022, a second thrust ring 2032 and a third thrust ring 2042 on their inner sides respectively, and the first thrust ring 2022, the second thrust ring 2032 and the third thrust ring 2042 are respectively connected to the first rotating shaft 202, the second rotating shaft 203 and the third rotating shaft 204 through a first connecting member to limit the axial movement of the first pulley 2021, the second pulley 2031 and the third pulley 2041; the first connecting member can be a screw to fix the axial movement of the pulley so that the pulley will not be displaced when it rotates with the rotating shaft, thereby improving the stability of the transmission.

[0047] Furthermore, in this embodiment, the thermal energy component 301 includes a heat collection lens 3011 and a heat collection container 3012. The heat collection lens 3011 is arranged above the heat collection container 3012, and the heat collection lens 3011 is used to transfer heat energy to the heat collection container 3012; the heat collection lens 3011 can adopt a Fresnel lens, and a lens support frame 3013 is used to support the heat collection lens 3011, and the lens support frame 3013 is placed on the heat collection container 3012, so that the heat collection lens 3011 is located above the heat collection container 3012. The heat container 3012 is above the heat container 3012; the outlet end of the heat collecting container 3012 is connected to the heat transfer component, and the inlet end is connected to the water source. After the water source is introduced into the heat collecting container 3012, the heat collecting lens 3011 collects sunlight to the heat collecting container 3012, heats the water in the heat collecting container 3012, and transfers the heated water to the heat transfer component; a throttle valve is provided at the connection between the outlet end of the heat collecting container 3012 and the heat transfer component to control the water flow; the thermal energy component 301 is arranged on the outer side of the second side plate 103.

[0048] Furthermore, in this embodiment, the heat transfer component also has a first circulation pipe 302 and a second circulation pipe 303, and the first circulation pipe 302 and the second circulation pipe 303 are both connected to the heat collecting container 3012 through the first connecting pipe. It can be seen from the above that the thermal energy component 301 is arranged on the outside of the second side plate 103, and one end of a plurality of first connecting pipes are connected to the outlet end of the heat collecting container 3012, that is, the throttle valve is arranged at the connection point between the first connecting pipe and the outlet end of the heat collecting container 3012, and the other ends of the plurality of first connecting pipes pass through the second side plate 103 and are respectively connected to the inlet end of a circulation pipe 302 and the second circulation pipe 303; the first circulation pipe 302 and the second circulation pipe 303 are respectively arranged below the first conveying section 2011 and the second conveying section 2012 to control the heat entering The materials before the drying module 40 are preheated; the first circulation pipe 302 and the second circulation pipe 303 are both composed of multiple pipes, and the specific composition structure is: the two pipes are arranged parallel to the edge of the frame 10 and one end is connected to the first connecting pipe that passes through one end of the second side plate 103, and the other end is closed, and several pipes are connected in the middle to form a ladder-like shape, and this ladder-shaped pipe is arranged parallel to the conveyor belt 201, respectively located below the first conveying section 2011 and the second conveying section 2012, the first circulation pipe 302 and the second circulation pipe 303 are specifically located in the front section area of ​​the material conveying path to preheat the material before entering the drying module 40, which can accelerate the volatilization rate of water from the material, and combine with the subsequent drying module 40 to improve the drying efficiency.

[0049] Furthermore, in the present embodiment, the heat transfer plate comprises a first heat plate 304 and a second heat plate 305, the first heat plate 304 is located between the first circulation pipe 302 and the first conveying section 2011, the first heat plate 304 is used to heat the material passing through the first conveying section 2011, the second heat plate 305 is located between the second circulation pipe 303 and the second conveying section 2012, the second heat plate 305 is used to heat the material passing through the second conveying section 2012 and before reaching the drying module; heat is transferred to the first heat plate 304 and the second heat plate 305 through the first circulation pipe 302 and the second circulation pipe 303 respectively, and the first heat plate 304 and the second heat plate 305 transfer the heat evenly to the conveyor belt 201, so as to evenly heat the material and reduce the situation where uneven drying of the material is caused by uneven heating.

[0050] Furthermore, in this embodiment, the microwave drying component 401 and the infrared drying component 402 are arranged in sequence along the material conveying path, so that the material first passes through the microwave drying component 401 and then passes through the infrared drying component 402; the microwave energy of the microwave drying component can produce a heating effect inside the material, thereby reducing the moisture content of the material, and then the infrared drying component is used to dry the material as a whole, thereby improving the drying speed.

[0051] Furthermore, in this embodiment, the feeding module 20 also includes a power assembly 207, which is arranged on one side of the frame 10 and is used to provide power for the movement of the conveyor belt 201; specifically, the power assembly 207 is arranged on the first side plate 102, and the output end of the power assembly 207 is rotatably connected to the end of the first rotating shaft 202 located on the first side plate 102 to provide power for the movement of the conveyor belt 201; the power assembly 207 includes a motor 2071, a first gear 2072, a second gear 2073 and a crawler 2074, and the first gear 2072, the second gear 2073 and the crawler 2074 are arranged on the outer side of the first side plate 102. On the side, the motor is fixed to the inner side of the first side plate 102, and the output end of the motor 2071 passes through the first side plate 102, the output end of the motor 2071 is rotatably connected to the first gear 2072, the track 2074 is arranged around the first gear 2072 and the second gear 2073 to realize the transmission between each other, the second gear 2073 is rotatably connected to the first rotating shaft 202, the first gear 2072 is driven to rotate by the motor 2071, the first gear 2072 drives the second gear 2073 to rotate through the track 2074, and the second gear 2073 further drives the first rotating shaft 202 to rotate, so as to realize the movement of the conveyor belt 201.

[0052] Furthermore, in this embodiment, there is a feed bin 50 above the conveyor belt 201, which is located at the initial position of the material conveying path and is used to place the material onto the conveyor belt 201. The two ends of the feed bin 50 are respectively connected to the upper surfaces of the first side plate 102 and the second side plate 103, and bolts can be selected for connection.

[0053] The following will fully describe the working process of a belt-type continuous microwave drying device of this embodiment in combination with the above contents.

[0054] First, connect the water source to the heat collecting container 3012, and use the heat collecting lens 3011 located above the heat collecting container 3012 to absorb sunlight to heat the water in the heat collecting container 3012; start the motor 2071, and the motor 2071 drives the first gear 2072 to rotate. The first gear 2072 and the second gear 2073 are connected through the track 2074. The rotation of the first gear 2072 drives the movement of the track 2074, and then drives the movement of the second gear 2073. Since the second gear 2073 is rotationally connected to the first rotating shaft 202, the movement of the first rotating shaft 202 is driven by the movement of the second gear 2073, and then the first pulley 2021 on the first rotating shaft 202 rotates with the first rotating shaft 202, thereby driving the movement of the conveyor belt 201.

[0055] Next, the water heated by the heat collecting container 3012 is passed into the first circulation pipe 302 and the second circulation pipe 303 through a plurality of first connecting pipes, and the water flow rate can be controlled by a throttle valve provided at the connection between the first connecting pipe and the heat collecting container 3012; materials are put into the material bin 50 so that the materials enter the conveyor belt 201.

[0056] Then, the material passes through the first conveying section 2011 with the first circulation pipe 302 in sequence, then passes through the part of the second conveying section 2012 with the second circulation pipe 303, and finally passes through the part of the second conveying section 2012 with the drying module. The material on the conveyor belt 201 is heated by the first circulation pipe 302 and the second circulation pipe 303, so that the temperature is increased, thereby increasing the evaporation rate of the water in the material on the conveyor belt 201 and accelerating the volatilization rate of the water from the material; the material can be flattened by the roller 101 so that the material can be heated more evenly. After the material passes through the first conveying section 2011, the "Z"-shaped structure on the conveyor belt 201 is used to make the material evenly enter the second conveying section 2012, reducing the accumulation of materials, so as to complete the subsequent processes and improve the uniformity of material drying.

[0057] Finally, the material passes through the second conveying section 2012 with the second circulation pipe 303 and then enters the drying module for drying, and the microwave drying component 401 and the infrared drying component 402 of the drying module are arranged in sequence along the movement direction of the material, so that the material first passes through the microwave drying component 401 and then passes through the infrared drying component 402; the microwave energy of the microwave drying component can generate a heating effect inside the material to reduce the moisture content of the material, and then the infrared drying component dries the material as a whole, thereby improving the drying speed.

[0058] In the description of the present disclosure, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present disclosure.

[0059] For those skilled in the art, various other corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all of these changes and deformations should fall within the protection scope of the claims of the present disclosure.

Claims

1. A belt-type continuous microwave drying device, characterized in that: It comprises a frame (10), a feeding module (20), a preheating module (30) and a drying module (40); The feeding module (20) comprises a conveyor belt (201) arranged on the frame (10), and the conveyor belt (201) is extended along a material conveying path; The preheating module (30) is arranged corresponding to the front section of the material conveying path, and the preheating module (30) comprises a thermal energy component (301) and a heat transfer component which are connected to each other, and the heat transfer component comprises a heat transfer plate which is in thermal contact with the conveyor belt (201) and is used for preheating the material; The drying module (40) is arranged corresponding to the rear section of the material conveying path, and the drying module (40) comprises a microwave drying component (401) and an infrared drying component (402), and the microwave drying component (401) and the infrared drying component (402) are arranged adjacent to each other on the conveyor belt (201) along the material conveying direction.

2. The belt-type continuous microwave drying device according to claim 1, characterized in that: The frame (10) has a roller (101) corresponding to the front section of the material conveying path. The roller (101) is located above the conveyor belt (201) and is used to flatten the material on the conveyor belt (201).

3. The belt-type continuous microwave drying device according to claim 1, characterized in that: The conveyor belt (201) comprises a first conveying section (2011), a transition section and a second conveying section (2012) in sequence along the material conveying direction; the first conveying section (2011) and the second conveying section (2012) are both horizontally extended, and the plane where the first conveying section (2011) is located is higher than the plane where the second conveying section (2012) is located; and two ends of the transition section are respectively connected to the first conveying section (2011) and the second conveying section (2012).

4. The belt-type continuous microwave drying device according to claim 3, characterized in that: The thermal energy component (301) comprises a heat collecting lens (3011) and a heat collecting container (3012); the heat collecting lens (3011) is arranged above the heat collecting container (3012); and the heat collecting lens (3011) is used to transfer heat to the heat collecting container (3012).

5. The belt-type continuous microwave drying device according to claim 4, characterized in that: The heat transfer component also has a first circulation pipe (302) and a second circulation pipe (303), and the first circulation pipe (302) and the second circulation pipe (303) are both connected to the heat collection container (3012) through a first connecting pipe; the first circulation pipe (302) and the second circulation pipe (303) are respectively arranged below the first conveying section (2011) and the second conveying section (2012) to preheat the material before entering the drying module (40).

6. The belt-type continuous microwave drying device according to claim 5, characterized in that: The heat transfer plate comprises a first heat plate (304) and a second heat plate (305), wherein the first heat plate (304) is located between the first circulation pipe (302) and the first conveying section (2011), and the first heat plate (304) is used to heat the material passing through the first conveying section (2011); the second heat plate (305) is located between the second circulation pipe (303) and the second conveying section (2012), and the second heat plate (305) is used to heat the material passing through the second conveying section (2012) and before reaching the drying module.

7. The belt-type continuous microwave drying device according to claim 1, characterized in that: The microwave drying component (401) and the infrared drying component (402) are arranged in sequence along the conveying path of the material, so that the material first passes through the microwave drying component (401) and then passes through the infrared drying component (402).

8. The belt-type continuous microwave drying device according to claim 1, characterized in that: The feeding module (20) further comprises a power assembly (207), wherein the power assembly (207) is arranged on one side of the frame (10) and is used to provide power for the movement of the conveyor belt (201).

9. The belt-type continuous microwave drying device according to claim 1, characterized in that: A feed bin (50) is provided above the conveyor belt (201) and is located at the initial position of the material conveying path.

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