Air energy high-temperature heat pump tunnel-type multi-functional drying production equipment

Abstract

The present invention relates to the field of drying devices, specifically an air-source high-temperature heat pump tunnel-type multi-functional drying production equipment, which is provided with a rectangular hollow drying box. Feed inlets and discharge outlets are respectively arranged at both ends of the pipeline. A conveyor belt is arranged inside the pipeline. Along the conveyor belt, there is a heat pump heating main unit. The heat pump heating main unit is connected to a hot air exchanger through a heating pipeline. A cooling pipeline is connected between the heat pump heating main unit and the hot air exchanger. A fan is fixedly connected to the hot air exchanger. A moisture exhaust and return air fan is arranged above the conveyor belt. The moisture exhaust and return air fan is connected to a return air duct. The opening of the return air duct penetrates through the outer wall of the drying box. The connection between the outer wall of the return air duct and the penetration of the drying box is sealed. The materials are in a relatively sealed state in the equipment. During the operation of the equipment, feeding can be continuously carried out through the feed inlet, enabling the equipment to work continuously and reducing the problem that the previous equipment could only dry in batches during the working process.

Description

Technical Field

[0001] The present invention relates to the field of drying devices, and specifically to an air - energy high - temperature heat pump tunnel - type multi - functional drying production equipment. Background Art

[0002] After the harvested agricultural products are planted, they all need to go through a drying process. The traditional drying method is to use sunlight. This method of drying rice by relying on sunlight is becoming increasingly unsuitable for the development of modern rural areas because the drying sites are getting fewer and the drying efficiency is too low. Therefore, there are currently some drying equipment dedicated to crop drying on the market. However, these drying equipment are either simple in structure, large in volume, low in drying efficiency and uneven in drying, or have good drying effect, but can only dry materials in batches, and the heat loss inside the equipment is very large each time the dried materials are replaced. Summary of the Invention

[0003] The purpose of the present invention is to provide an air - energy high - temperature heat pump tunnel - type multi - functional drying production equipment. The materials are in a relatively sealed state in the equipment, and during the operation of the equipment, materials can be continuously fed through the feeding port, enabling the equipment to work continuously and reducing the problem that the previous equipment could only dry materials in batches during the working process.

[0004] To achieve the above - mentioned purpose, the solution provided by the present invention is as follows:

[0005] Air - energy high - temperature heat pump tunnel - type multi - functional drying production equipment, including a drying box, a conveyor belt, a feed inlet, and a discharge outlet. There is a hollow drying box. The opposite side walls of the drying box along the conveyor - belt transmission direction are the front and rear equipment surfaces, and the other two vertical side walls are the left and right equipment surfaces. The front equipment surface of the drying box is provided with a feed inlet, and the rear equipment surface of the drying box is provided with a discharge outlet. A heat - diffusion prevention device is provided at the feed inlet. The heat - diffusion prevention device includes a baffle arranged at the feed inlet. The baffle is in clearance fit with the side walls of the feed inlet around its perimeter. The baffle is rotatably connected to the top edge of the feed inlet through a hinge. A baffle is provided at the discharge outlet. The baffle is in clearance fit with the side walls of the discharge outlet around its perimeter. The baffle is rotatably connected to the top edge of the discharge outlet through a hinge. A conveyor belt is arranged inside the drying box. The starting end of the conveyor belt closer to the feed inlet contacts the feed - side wall of the drying box where the feed inlet is located. The starting end of the conveyor belt inclines towards the ground. The ending end of the conveyor belt closer to the discharge outlet contacts the side wall of the drying box where the discharge outlet is located. A plurality of heating devices are arranged along the side of the conveyor belt inside the drying box to transfer heat to the conveyor belt. The heating device is provided with a heat - pump heating main unit on the right equipment surface of the drying box. A hot - air exchanger is arranged on the inner wall of the equipment surface. The hot - air exchanger is connected to the heat - pump heating main unit through a pipeline. A fan is arranged on the equipment surface of the hot - air exchanger facing the drying box. The fan blows air towards the hot - air exchanger to accelerate the transfer of heat from the hot - air exchanger to the conveyor belt. A moisture - exhaust return fan is arranged at the top of the drying box. The indoor air - return opening of the moisture - exhaust return fan absorbs the moisture inside the drying box. The outdoor air - discharge opening of the moisture - exhaust return fan is connected to the top of the drying box through a moisture - exhaust air duct. The moisture - exhaust air duct penetrates through the top of the drying box. The outdoor fresh - air inlet of the moisture - exhaust return fan is connected to the top of the drying box through a fresh - air duct. The fresh - air duct penetrates through the top of the drying box to connect the internal space of the fresh - air duct with the external space of the drying box.

[0006] The principle of the technical solution of the present invention lies in:

[0007] The drying area of the equipment is in a relatively sealed state. Materials can enter the equipment through the feed inlet for drying and be discharged from the equipment through the discharge outlet after drying, reducing the heat loss generated when materials enter and exit the equipment, enabling the equipment to continuously work for drying materials.

[0008] The beneficial effects produced by this solution are as follows:

[0009] 1. The air - energy high - temperature heat pump tunnel - type multi - functional drying production line transfers heat to the conveyor belt by a plurality of heating devices. The included angle between the heat - transfer direction of each heating device and the conveyor - belt conveying direction is different, solving the problem of uneven heating during the material - conveying process and improving the drying effect.

[0010] 2. The moisture - exhaust system combines an automatic temperature - controlled moisture - exhaust system and a manual forced - exhaust system, which can be switched according to the drying requirements.

[0011] 3. When using the air - source high - temperature heat pump tunnel - type multi - functional drying production line, after the first heating, constant - temperature drying is carried out. The heat loss of the materials during entering and leaving the drying box 4 is very small, and continuous feeding and discharging can be achieved, increasing the drying efficiency.

[0012] Furthermore, the conveyor belt is of a mesh structure, reducing the contact area between the materials and the conveyor belt, making the heating surface of the materials wider during drying, and solving the problem of poor drying effect caused by too large a contact area between the materials and the conveyor belt.

[0013] Furthermore, several heat pump heating hosts, hot - air exchangers and fans are respectively arranged along the conveyor belt, so that the hot air flows blown by the fans form different angles with the conveying direction of the conveyor belt, making the materials heated more evenly and solving the problem of poor drying effect caused by uneven heating of the materials.

[0014] Furthermore, the conveyor belt is inclined at 45° in the opposite direction of the discharge port at the feed port, so that the materials can be more evenly distributed on the conveyor belt after passing through the feed port, solving the problem of material accumulation on the conveyor belt.

[0015] Furthermore, a cover plate is provided at the feed port. When no materials are fed, the cover plate is in a closed state, reducing the heat energy loss in the equipment and increasing the drying effect.

[0016] Furthermore, a cover plate is provided at the discharge port. When no materials are fed, the cover plate is in a closed state, reducing the heat energy loss in the equipment and increasing the drying effect.

[0017] Furthermore, a return - transfer system is set up to automatically judge whether the materials after drying meet the drying standard. If they do not meet the standard, the materials will be automatically transferred to the discharge port for re - drying, solving the problem that the materials need to be manually detected by workers after drying, greatly increasing the drying success rate and reducing the production time cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a top - view schematic diagram of Embodiment 1 of the present invention.

[0019] Figure 2 It is Figure 1 the schematic diagram of the A - A cross - section in

[0020] Figure 3 It is a cross - section schematic diagram of Embodiment 2 of the present invention.

[0021] Figure 4 It is Figure 3 the enlarged partial schematic diagram shown at C in

[0022] Figure 5 It is Figure 3 the partial cross - section diagram shown at C in DETAILED DESCRIPTION OF THE INVENTION

[0023] The reference numerals in the drawings of the specification include: conveyor belt 1, feed inlet 2, discharge outlet 3, drying oven 4, heat pump heating main unit 5, hot air exchanger 6, fan 7, moisture exhaust return air fan 8, moisture exhaust air duct 9, heating pipeline 10, cooling pipeline 11, baffle 12, hinge 13, fresh air duct 14, indoor air return opening 15, outdoor fresh air inlet 16, fresh air discharge outlet 17, outdoor exhaust outlet 18, electronic valve 19, humidity sensor 20, controller 21, return conveyor belt 22, rack 221, gear 222, triangular drive belt 23, drive shaft 231, main support roller 232, toothed belt 24, arc-shaped stainless steel material guiding structure 25, support 26, fixed rod 27, electric wire 271, circular live wire conducting piece 272, circular neutral wire conducting piece 273, circular ground wire conducting piece 274, material supporting plate 28, motor 30, live wire conducting rod 301, neutral wire conducting rod 302, ground wire conducting rod 303, circular stop rod 31, stop rod support 32.

[0024] Embodiment 1:

[0025] Embodiment 1 is basically as shown in the attached Figure 1 - attached Figure 2 figure:

[0026] The air source high-temperature heat pump tunnel-type multi-functional drying production equipment, as shown in the attached Figure 1 - attached Figure 2 figure, includes a conveyor belt 1, a feed inlet 2, and a discharge outlet 3. A cuboid hollow drying oven 4 is provided. Square feed inlet 2 and square discharge outlet 3 are respectively provided on two relatively distant side walls of the drying oven 4. The feed inlet 2 and the discharge outlet 3 are respectively provided with heat diffusion prevention devices. The heat diffusion prevention device at the feed inlet 2 is provided with a square baffle 12. The periphery of the baffle 12 is in clearance fit with the side wall of the feed inlet 2. The baffle 12 is rotatably connected to the top of the feed inlet 2 through a hinge 13, so that after the staff pushes open the baffle 12, the baffle 12 can automatically return to its position under the action of gravity. A heat diffusion prevention device with the same structure is provided at the discharge outlet 3. A conveyor belt 1 is provided in the drying oven 4. The conveyor belt 1 is a mesh structure, so that the material can be evenly heated on all four sides during the transmission process.

[0027] The starting end of the conveyor belt 1, which is relatively close to the feeding port 2, has a gap with the feeding side wall of the drying box 4 where the feeding port 2 is located, so that there is no friction between the conveyor belt and the feeding side wall. The conveyor belt 1 bends towards the ground 50 cm away from the feeding side wall, forming a conical groove between the conveyor belt 1 within 0 cm - 50 cm from the feeding side wall and the feeding side wall. The ending end of the conveyor belt 1, which is relatively close to the discharging port 3, has a gap with the discharging side wall of the drying box 4 where the discharging port 3 is located, so that there is no friction between the conveyor belt and the discharging side wall. After the staff puts the material into the drying box 4 through the feeding port 2, the material falls freely into the conical groove formed by the conveyor belt 1 and the feeding side wall of the drying box 4. The material can be evenly conveyed to the discharging port 3 through the conveyor belt 1, and the material at the discharging port 3 is discharged from the discharging port 3 by the thrust of the subsequent conveyed material on the conveyor belt 4.

[0028] There are 6 heating devices along the side of the conveyor belt 1 inside the drying box 4 to transfer heat to the conveyor belt. Now, one of the heating devices is described. The heating device includes a heat pump heating main unit 5 installed in the drying box 4 and a hot air exchanger 6 installed on the inner wall of the right equipment surface of the drying box 4. A heat supply pipeline 10 is provided to connect the heat pump heating main unit 5 and the hot air exchanger 6, so that the hot air generated by the heat pump heating main unit 5 can be transmitted into the hot air exchanger 6 through the heat supply pipeline 10. At the same time, a cooling pipeline 11 is provided to connect the heat pump heating main unit 5 and the hot air exchanger 6, so that the air cooled in the hot air exchanger 6 can be transmitted to the heat pump heating main unit 5 through the cooling pipeline 11. The hot air exchanger 6 is arranged between the conveyor belt 1 and the right equipment surface of the drying box 4. The hot air exchanger 6 is provided with a fan 7 facing the right equipment surface of the drying box 4. The fan 7 blows air towards the hot air exchanger 6 to accelerate the heat transfer from the hot air exchanger 6 to the conveyor belt 1. The angles formed by the blowing directions of the fans 7 in the 6 heating devices and the conveying direction of the conveyor belt 1 are 25°, 50°, 75°, 100°, 125° and 150° respectively, so that the materials on the conveyor belt 1 are heated from multiple angles.

[0029] The top of the drying oven 4 is provided with a moisture exhaust and return air blower 8 (a ceiling fresh air dehumidifier produced by Hangzhou Songyue Environmental Technology Co., Ltd., model SYD-500L). The moisture exhaust and return air blower 8 is provided with an indoor return air inlet 15, an outdoor fresh air inlet 16, a fresh air exhaust outlet 17, and an outdoor exhaust outlet 18. The moisture exhaust and return air blower 8 absorbs the moisture inside the drying oven 4 through the indoor return air inlet 15. The outdoor exhaust outlet 18 of the moisture exhaust and return air blower 8 is connected to the top of the drying oven 4 through a moisture exhaust duct 9. The moisture exhaust duct 9 penetrates through the top of the drying oven 4 to connect the internal space of the moisture exhaust duct 9 with the external space of the drying oven 4, so that the moisture absorbed by the moisture exhaust and return air blower 8 through the indoor return air inlet 15 can be discharged to the outside of the drying oven 4. The outdoor fresh air inlet 16 of the moisture exhaust and return air blower 8 is connected to the top of the drying oven 4 through a fresh air duct 14. The fresh air duct 14 penetrates through the top of the drying oven 4 to connect the internal space of the fresh air duct 14 with the external space of the drying oven 4, so that the fresh and dry air outside the drying oven 4 enters the moisture exhaust and return air blower 8 through the fresh air duct 14. The moisture exhaust and return air blower 8 discharges the fresh air into the drying oven 4 through the fresh air exhaust outlet 17, so that the air outside the drying oven 4 enters the drying oven 4.

[0030] The specific implementation process is as follows:

[0031] The staff puts the drying materials into the conical groove through the feeding port 2. The materials are evenly transported to the discharging port 3 through the conveyor belt 1. During the transportation process, the materials are heated and dried by the hot air blowing towards the conveyor belt 1. After the materials on the conveyor belt 1 are dried at high temperature, the moisture in the materials evaporates into the air. The evaporated moisture is discharged to the outside of the drying oven 4 through the indoor return air inlet 15 of the moisture exhaust and return air blower 8 in the drying oven 4. The dried materials are transported to the discharging port 3 through the conveyor belt 1, and the materials reach the discharging port 3 and are discharged from the discharging port 3 by the thrust of the subsequent materials transported by the conveyor belt 4.

[0032] Embodiment 2:

[0033] Embodiment 2 is basically as shown in the appendix Figure 3 shown:

[0034] The difference between Example 2 and Example 1 lies in the provision of a feedback system. In the feedback system, an electronic valve 19 is provided between the conveyor belt 1 and the discharge port 3. The opening direction of the electronic valve 19 faces the bottom of the drying oven 4. When the electronic valve 19 is closed, the plane formed is on the same plane as the surface of the conveyor belt 1, so that the materials conveyed by the conveyor belt 1 are transferred onto the electronic valve 19. A humidity sensor 20 is provided on the side of the electronic valve 19, enabling the humidity sensor 20 to detect the materials on the surface of the conveying electronic valve 19. The humidity sensor 20 is connected to the electronic valve 19 through a controller 21. When the humidity sensor 20 detects that the humidity of the materials exceeds the threshold, the valve can be controlled to open through the controller 21, so that the materials fall. From the side wall of the drying oven 4 where the discharge port 3 is located to the inclined part where the conveyor belt 1 is located at the bottom of the drying oven 4, a feedback belt 22 is provided, enabling the materials to be horizontally conveyed along the bottom of the drying oven 4 towards the feed port 2 through the feedback belt 22 after falling. A number of circular blocking rods 31 are provided inside the feedback belt 22. The circular blocking rods 31 are fixedly connected to the bottom of the drying oven through blocking rod brackets 32, so that the rack 221 and the circular blocking rods 31 are on the same plane. When the rack 221 passes through the circular blocking rods 31, the conveyor belt of the feedback belt 22 vibrates due to the blocking of the circular blocking rods 31.

[0035] The section of the inclined part of the conveyor belt 1 close to the corner of the front equipment surface of the drying box 4 near the ground is replaced with a triangular rotating belt 23. The triangular rotating belt 23 is an equilateral triangle. A transmission shaft 231 is horizontally arranged at the center of the triangular rotating belt 23, enabling the transmission shaft 231 to drive the triangular rotating belt 23 to rotate. Inside the return conveyor belt 22, there is a flexible rack 221. On one side of the return conveyor belt 22 away from the rear equipment surface of the drying box 4, there is a gear 222 meshing with the rack 221. The gear 222 and the transmission shaft 231 are driven by a toothed belt 24, so that the return conveyor belt 22 can drive the triangular rotating belt 23 to rotate once every 1 minute during rotation, with each rotation being 120°. The transmission shaft 231 is fixedly connected to the frame of the triangular rotating belt 23. The transmission shaft 231 is a hollow structure. Inside the drying box 4, there is a fixed rod 27. The fixed rod 27 passes through the transmission shaft 231, and both ends of the fixed rod 27 are fixedly connected to the left and right equipment surfaces of the drying box. The fixed rod 27 and the transmission shaft 231 are connected by a ball bearing, so that the circular trajectory formed when the triangular rotating belt 23 rotates can fit with one end of the conveyor belt 1 close to the feed inlet 2, and the material can be conveyed to the surface of the conveyor belt 1 through the surface of the triangular rotating belt 23. At the same time, the circular trajectory formed when the triangular rotating belt 23 rotates can fit with the surface of the return conveyor belt 22. At one end of the return conveyor belt 22 close to the feed inlet 2, there is an arc-shaped stainless steel material guiding structure 25. One end of the arc-shaped stainless steel material guiding structure 25 close to the return conveyor belt 22 fits with the surface of the return conveyor belt 22. The arc-shaped stainless steel material guiding structure 25 and the bottom of the drying box 4 are fixedly connected by a stainless steel bracket 26, so that the material conveyed by the return conveyor belt 22 will push the material towards the arc-shaped stainless steel material guiding structure 25 when the triangular rotating belt 23 rotates. The upper end of the arc-shaped stainless steel material guiding structure 25 away from the return conveyor belt 22 is in the same plane as the transmission shaft 231. At the same time, the upper end of the arc-shaped stainless steel material guiding structure 25 fits with the circular trajectory formed when the triangular rotating belt 23 rotates. The upper end of the arc-shaped stainless steel material guiding structure 25 and the feed inlet 2 are connected by a material supporting plate 28, so that when any corner of the triangular rotating belt 23 rotates to the position of the upper end of the arc-shaped stainless steel material guiding structure 25, a conical groove is formed between the surface of the triangular rotating belt 23 and the material supporting plate 28, and the material can be pushed from the surface of the return conveyor belt 22 into the conical groove along the arc-shaped stainless steel material guiding structure 25 when the triangular rotating belt 23 rotates.

[0036] On one side of the triangular rotating belt 23 closer to the right equipment surface of the drying box 4, there is a triangular plate, enabling the triangular plate to rotate together with the triangular rotating belt 23. The triangular plate and the fixed rod 27 are connected by a ball bearing. On the side of the triangular plate facing the inside of the triangular rotating belt 23, there is a motor 30 fixedly installed. The output shaft of the motor 30 is meshed with the main support roller 232 of the conveyor belt through a gear, so that the motor can make the main support roller 232 rotate through the gear, thereby enabling the triangular rotating belt 23 to convey materials.

[0037] The support rod 27 has a hollow structure. Inside the support rod 27, there is an electric wire 271 connected to an external power supply. The support rod 27 is provided with a circular live wire conductive sheet 272 that is electrically connected to the live wire of the electric wire 271. The support rod 27 is provided with a circular neutral wire conductive sheet 273 that is electrically connected to the neutral wire of the electric wire 271. The support rod 27 is provided with a circular ground wire conductive sheet 274 that is electrically connected to the ground wire of the electric wire 271. The live wire interface of the power supply of the motor 30 is connected to the circular live wire conductive sheet 272 through a live wire conductive rod 301, and the live wire conductive rod 301 is in contact with the circular live wire conductive sheet 272. The neutral wire interface of the power supply of the motor 30 is connected to the circular neutral wire conductive sheet 273 through a neutral wire conductive rod 302, and the neutral wire conductive rod 302 is in contact with the circular neutral wire conductive sheet 273. The ground wire interface of the power supply of the motor 30 is connected to the circular ground wire conductive sheet 274 through a ground wire conductive rod 303, and the ground wire conductive rod 302 is in contact with the circular ground wire conductive sheet 274, so that the motor is always powered on when it rotates following the triangular rotating belt 23. The specific implementation process is as follows:

[0038] When the material is transported to the surface of the electronic valve 19 through the conveyor belt 1 towards the discharge port 3, the humidity sensor 20 detects the humidity of the material on the surface of the electronic valve 19 at this time. If the humidity detection is qualified, the material passes through the discharge port 3 under the thrust of the subsequent material on the conveyor belt 1 to the electronic valve 19. If the humidity detection exceeds the threshold, the humidity detector opens the electronic valve 19 through the controller 21, so that the material on the surface of the electronic valve 19 falls freely onto the return conveyor belt 22. The material is transported to the side where the return conveyor belt 22 is in contact with the arc-shaped stainless steel guiding structure 25 through the return conveyor belt 22. When the triangular rotating belt 23 rotates, the material is scraped from the return conveyor belt 22 into the conical groove through the arc-shaped stainless steel guiding structure 25. The triangular rotating belt 23 evenly transports the material to the conveyor belt 1, so that the material is dried again.

[0039] The above are only embodiments of the present invention. Common general knowledge such as specific structures and characteristics in the solutions is not described in detail here. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to explain the content of the claims.

Claims

1. Air energy high-temperature heat pump tunnel-type multi-functional drying production equipment, including a drying box, a conveyor belt, a feed inlet, and a discharge outlet. It is characterized in that: In the drying box, the opposite side walls along the conveyor belt transmission direction are the front and rear equipment surfaces, and the other two vertical side walls are the left and right equipment surfaces. The front equipment surface of the drying box is provided with a feed inlet, and the rear equipment surface of the drying box is provided with a discharge outlet. A heat diffusion prevention device is provided at the feed inlet. The heat diffusion prevention device includes a baffle provided at the feed inlet. The periphery of the baffle is in clearance fit with the side wall of the feed inlet. The baffle is rotatably connected to the top edge of the feed inlet through a hinge. A baffle is provided at the discharge outlet. The periphery of the baffle is in clearance fit with the side wall of the discharge outlet. The baffle is rotatably connected to the top edge of the discharge outlet through a hinge. A conveyor belt is provided in the drying box. A plurality of heating devices are provided along the side of the conveyor belt inside the drying box to transfer heat to the conveyor belt. The heating device is provided with a heat pump heating main unit on the right equipment surface of the drying box. A hot air exchanger is provided on the inner wall of the equipment surface. The hot air exchanger is connected to the heat pump heating main unit through a pipeline. A fan is provided on the equipment surface of the hot air exchanger facing the drying box. The fan blows air towards the hot air exchanger to accelerate the transfer of heat from the hot air exchanger to the conveyor belt. A moisture exhaust return air fan is provided at the top of the drying box. The indoor return air inlet of the moisture exhaust return air fan absorbs the moisture inside the drying box. The outdoor exhaust air outlet of the moisture exhaust return air fan is connected to the top of the drying box through a moisture exhaust air duct. The moisture exhaust air duct penetrates through the top of the drying box. The outdoor fresh air inlet of the moisture exhaust return air fan is connected to the top of the drying box through a fresh air duct. The fresh air duct penetrates through the top of the drying box to connect the internal space of the fresh air duct with the external space of the drying box. A plurality of heat pump heating main units, hot air exchangers, and fans are respectively provided along the conveyor belt transmission direction, so that the direction of the hot air flow blown by the fan forms an angle of 25° to 150° with the conveyor belt transmission direction respectively. It also includes a return transmission system. The return transmission system is provided with an electronic valve between the conveyor belt and the discharge outlet. The opening direction of the electronic valve faces the bottom of the drying box. The plane formed when the electronic valve is closed is on the same plane as the surface of the conveyor belt. A humidity sensor is provided on the side of the electronic valve. The humidity sensor is connected to the electronic valve through a controller. A return conveyor belt is provided at the bottom of the drying box from the side wall of the drying box where the discharge outlet is located to the inclined place where the conveyor belt is located. A number of circular blocking rods are provided inside the return conveyor belt. The circular blocking rods are fixedly connected to the bottom of the drying box through blocking rod brackets. A flexible rack is provided inside the return conveyor belt so that the rack and the circular blocking rods are on the same plane. A triangular rotating belt is provided between the conveyor belt and the corner of the front equipment surface of the drying oven close to the ground. The triangular rotating belt is an equilateral triangle. A transmission shaft is horizontally arranged at the center of the triangular rotating belt. A gear is provided on the side of the return belt away from the rear equipment surface of the drying oven and meshes with a rack. The gear is driven by a toothed belt with the transmission shaft. The transmission shaft is fixedly connected to the frame of the triangular rotating belt. The transmission shaft is of a hollow structure. A fixed rod is provided inside the drying oven. The fixed rod passes through the transmission shaft. Both ends of the fixed rod are fixedly connected to the left and right equipment surfaces of the drying oven. The fixed rod is connected to the transmission shaft through a ball bearing. The end of the return belt close to the feed inlet is provided with an arc-shaped stainless steel material guiding structure. The end of the arc-shaped stainless steel material guiding structure close to the return belt fits the surface of the return belt. The arc-shaped stainless steel material guiding structure is fixedly connected to the bottom of the drying oven through a stainless steel bracket. The upper end of the arc-shaped stainless steel material guiding structure away from the return belt is in the same plane as the transmission shaft. At the same time, the upper end of the arc-shaped stainless steel material guiding structure fits the circular track formed during the rotation of the triangular rotating belt. The upper end of the arc-shaped stainless steel material guiding structure is connected to the feed inlet through a material supporting plate. A conical groove is formed between the surface of the triangular rotating belt and the material supporting plate; A triangular plate is provided on the side of the triangular rotating belt closer to the right equipment surface of the drying oven. The triangular plate can rotate together with the triangular rotating belt. The triangular plate is connected to the fixed rod through a ball bearing. A motor is fixedly provided on the side of the triangular plate facing the inside of the triangular rotating belt. The output shaft of the motor meshes with the main support roller of the conveyor belt through a gear.

2. The air energy high-temperature heat pump tunnel-type multi-functional drying production equipment according to claim 1, characterized in that: The conveyor belt is of a mesh structure.

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