Drying apparatus, drying method and use thereof in the production of filbert protein

Abstract

This invention discloses a drying apparatus, a drying method, and its application in the production of textured soy protein, relating to the field of textured soy protein production technology. The drying apparatus includes a frame with a conveying unit on it. A drying unit is located in the center of the top surface of the frame. A leveling unit and a cooling unit are respectively located on either side of the drying unit at the top of the frame. An auxiliary unit is located at the bottom of the frame. The leveling unit includes a support on the top of the frame, with a mounting plate on the support. Conductive plates are located on both sides of the bottom of the mounting plate, and contact rods are evenly distributed at the bottom of the conductive plates. This invention ensures that the material is evenly distributed during conveying, effectively cleaning residues remaining on the conveying section. The drying intensity can be adjusted according to the moisture content of the textured soy protein to prevent under-drying or over-drying, and accelerates the removal of water vapor. Furthermore, it effectively prevents the textured soy protein from sticking to the conveying section after drying.

Description

Technical Field

[0001] This invention relates to the field of textured protein production technology, specifically to drying equipment, drying methods, and their application in textured protein production. Background Technology

[0002] Currently, textured soy protein is widely used in meat products, spicy foods, and snack foods. Its application in catering and frozen food processing is also relatively mature. Textured soy protein contains a lot of moisture during the early processing stage. If it is not dried, the high moisture content will make it easy for microorganisms to grow, causing the product to spoil quickly during storage and transportation.

[0003] Chinese Patent Application No. 201820954852.8 discloses a drying box for textured protein foods with a conveying function. It includes a drying box body, two vertical support rods, a support frame, a conveyor belt, several rollers, several heating tubes, several cooling plates, a circulating fan, two ultraviolet disinfection lamps, and an inlet, an outlet, and a control switch located outside the box body. The two vertical support rods are respectively located at both ends of the support frame. The conveyor belt is formed by several rollers linked together to form a conveying loop. The inlet and outlet are respectively located on both sides of the drying box body, and the inlet, conveyor belt, and outlet are sequentially connected to form a conveying channel. The conveyor belt is hollowed out and has several grooves on its surface. The heating tubes are located inside the conveyor belt. However, during use, the material thickness distribution on the conveying section is uneven, resulting in uneven drying. Furthermore, material residue adheres to the conveying section, easily leading to bacterial growth.

[0004] In addition, during the production process, the varying moisture content of the materials leads to over-drying of materials with lower moisture content, while materials with excessively high moisture content cannot be effectively dried. Furthermore, the water vapor generated during the drying process is difficult to expel quickly, resulting in poor drying performance. Moreover, because soy protein has high viscosity when the moisture content is high, it will stick to the conveyor belt during the drying process as the moisture decreases, making it difficult to detach. This causes the soy protein to break down, and residues of soy protein will remain on the conveyor belt, making it difficult to clean. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the existing defects and provide a drying device, a drying method and its application in the production of textured soy protein. It can make the material evenly distributed and effectively clean the residue remaining on the conveyor. In addition, the drying intensity can be adjusted according to the moisture content of the textured soy protein to prevent under-drying or over-drying and accelerate the discharge of water vapor. Furthermore, it effectively prevents the textured soy protein from sticking to the conveyor after drying, and can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the present invention discloses the following technical solution: a drying device, including a frame, a conveying unit provided on the frame, a drying unit provided in the middle of the top surface of the frame, a material leveling unit and a cooling unit respectively provided on both sides of the top of the frame located on the drying unit, and an auxiliary unit provided at the bottom of the frame.

[0007] The material leveling unit includes a support, which is located on the top of the frame. The support is equipped with a mounting plate, and conductive plates are provided on both sides of the bottom of the mounting plate. Contact rods are evenly provided on the bottom of the conductive plates.

[0008] The drying unit includes supports symmetrically arranged on both sides of the top of the rack, a drying hood is provided between the supports on both sides, and an electric telescopic rod is provided on the top of the supports. The telescopic end of the electric telescopic rod is fixedly connected to the top of the drying hood.

[0009] The cooling unit includes a fixed frame, with air-gathering plates rotatably connected to both sides of the fixed frame. An adjusting motor is provided on the side of the fixed frame, and the output shaft of the adjusting motor is fixedly connected to the end of the air-gathering plate.

[0010] The auxiliary unit includes a fixed plate, on which a rotating shaft is rotatably connected. The circumferential surface of the rotating shaft is provided with a contact block via a support rod.

[0011] Preferably, one end of the frame is provided with a discharge plate, the top of the other end of the frame is provided with a storage bin, the bottom of the storage bin is provided with a support rod by a support spring, and the bottom side of the storage bin is provided with a vibration motor;

[0012] The storage silo has a discharge hopper movably installed on one side of its bottom opening, and an electric push rod is installed on the side of the discharge hopper. The fixed end of the electric push rod is movably connected to the side of the storage silo.

[0013] Preferably, the conveying unit includes two upper conveying rollers and two lower conveying rollers. The two upper conveying rollers are rotatably connected to both ends of the frame, and the two lower conveying rollers are rotatably connected to the support legs at both ends of the bottom of the frame. Both ends of the upper and lower conveying rollers are fixedly fitted with conveying sprockets, and the conveying sprockets on the same side are connected by a conveying chain. A conveyor belt is provided between the conveying chains on both sides, and the conveyor belt is wrapped around the outside of the two upper and two lower conveying rollers.

[0014] One end of the platform is equipped with a conveyor motor, and the output end of the conveyor motor is connected to the end of an upper conveyor roller through a chain drive mechanism.

[0015] Preferably, the conveyor belt is provided with symmetrical baffles on both sides, and the surface of the conveyor belt is provided with uniform partitions. The partitions and baffles are perpendicular to each other, and the baffles and partitions form a plurality of limiting grids.

[0016] Preferably, the uniform material unit further includes an infrared moisture meter body, which is disposed on the side of the mounting plate;

[0017] The contact rod is made of an elastic material, and its bottom end is lower than the top of the spacer.

[0018] Preferably, the drying hood is equipped with a temperature and humidity sensor, the top of the drying hood is equipped with a drying fan, the interior of the drying hood is equipped with an electric heating grid, and the sides of the drying hood are evenly provided with exhaust troughs.

[0019] Preferably, the fixing frame is located on the top of the platform, the two ends of the fixing frame are closed, and a cooling fan is provided on the top of the fixing frame.

[0020] Preferably, the fixing plate is located on the bottom surface of the frame, the support rod is an electromagnetic telescopic rod, the contact block corresponds to the position of the drying unit, and a transmission sprocket is fixedly sleeved at the end of the rotating shaft, the transmission sprocket meshing with the conveyor chain.

[0021] This invention also discloses a drying method for using the drying device described above in the production of textured soy protein, the steps of which are as follows:

[0022] S1. Place the material to be dried in the storage silo. According to the material characteristics and the required degree of drying, adjust the opening of the discharge hopper by electric push rod to control the speed and flow of material discharged from the bottom of the storage silo. Use a vibrating motor to vibrate the storage silo and discharge the material through the support spring.

[0023] S2. The conveyor motor drives an upper conveyor roller to rotate through the chain drive mechanism, and drives the conveyor belt to run through the conveyor sprocket and the conveyor chain. After the material is discharged from the storage bin, it falls into the limiting grid composed of baffles and partitions and is conveyed towards the drying unit.

[0024] S3. When the material passes through the equalization unit, the contact rod contacts the material, and at the same time, the infrared moisture meter detects the moisture content in the material.

[0025] S4. When the material passes through the drying unit, the height of the drying hood is adjusted according to the material's humidity using an electric telescopic rod. The drying fan draws in outside air, which is then heated by an electric heating grid to dry the material.

[0026] S5. When the dried material passes through the cooling unit with the conveyor belt, the cooling fan is started. According to the drying temperature, the motor drives the air-gathering plate to rotate, changing the intensity of the cooling airflow to cool the material.

[0027] S6. When the conveyor belt is running, the conveyor chain drives the transmission sprocket to rotate, which in turn drives the shaft to rotate and the contact block to rotate. When the contact block rotates, it generates a downward thrust on the lower surface of the conveyor belt. The continuous rotation of the contact block can cause the lower part of the conveyor belt to vibrate, thus preventing residue from remaining.

[0028] S7. After cooling, the material is conveyed to the discharge tray by the conveyor belt. The material falls from the conveyor belt into the discharge tray and is discharged, completing the entire drying process.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0030] 1. The present invention can orderly disperse materials through the contact rod of the material leveling unit to prevent material clumping, and the mounting plate can spread the materials evenly to avoid uneven material thickness; when the conveyor belt is running, the contact block of the auxiliary unit generates a downward pushing force with the lower surface inside the conveyor belt by rotating, causing the lower part of the conveyor belt to vibrate, effectively cleaning the residue remaining on the conveyor belt and preventing bacterial growth.

[0031] 2. The present invention uses an infrared moisture meter body equipped with a material equalization unit to detect the moisture content of the material. Based on the detection results, the electric telescopic rod can adjust the height of the drying hood and the electric heating grid. For materials with high moisture content, the height of the electric heating grid is lowered to increase the drying temperature; for materials with low moisture content, the height of the electric heating grid is raised to avoid over-drying, effectively preventing the phenomenon of insufficient or excessive drying.

[0032] 3. When encountering materials with high moisture content, this invention causes the conveyor motor to rotate in both directions, driving the conveyor belt and contact blocks to reciprocate. At the same time, the top support rod extends to cause the contact blocks to repeatedly squeeze the conveyor belt, forming intermittent opposing airflows inside the drying hood. This rapidly disperses water vapor to the surroundings and discharges it through the exhaust trough, accelerating airflow and improving drying efficiency. Simultaneously, it achieves up-and-down vibration of the material, effectively preventing the material from sticking to the surface of the conveyor belt, and also achieves material turning, improving the uniformity of material drying. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of the present invention;

[0034] Figure 2 This is a schematic diagram of the axial structure of the present invention;

[0035] Figure 3 This is a schematic diagram of the structure of the present invention from another angle;

[0036] Figure 4 This is a schematic diagram of the bottom structure of the present invention;

[0037] Figure 5 This is a schematic diagram of the structure of the present invention viewed from below.

[0038] In the diagram: 1. Frame; 101. Discharge tray; 102. Storage bin; 103. Support rod; 104. Vibrating motor; 105. Discharge hopper; 106. Electric push rod; 2. Conveying unit; 201. Upper conveyor roller; 202. Lower conveyor roller; 203. Conveyor sprocket; 204. Conveyor chain; 205. Conveyor belt; 206. Conveyor motor; 207. Stop bar; 208. Spacer bar; 3. Material leveling unit; 301. Support; 302. Installation. 303. Plate; 4. Contact rod; 5. Drying unit; 6. Support; 7. Drying hood; 8. Drying fan; 9. Exhaust duct; 10. Electric heating grid; 11. Electric telescopic rod; 12. Cooling unit; 13. Fixing frame; 14. Cooling fan; 15. Air concentrator; 16. Adjusting motor; 17. Auxiliary unit; 18. Fixing plate; 19. Rotating shaft; 10. Support rod; 10. Contact block; 11. Transmission sprocket. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Example 1

[0041] Please see Figure 1-5 This embodiment provides a drying device, including a frame 1. One end of the frame 1 is provided with a discharge tray 101, and the top of the other end of the frame 1 is provided with a storage bin 102. The bottom of the storage bin 102 is provided with a support rod 103 via a support spring. The bottom side of the storage bin 102 is provided with a vibration motor 104. The vibration motor 104 provides power for the vibration of the storage bin 102 and provides conditions for the high-frequency up-and-down vibration of the storage bin 102 via the support spring.

[0042] A discharge hopper 105 is movably provided on one side of the bottom opening of the storage bin 102. An electric push rod 106 is provided on the side of the discharge hopper 105. The fixed end of the electric push rod 106 is movably connected to the side of the storage bin 102. The telescopic end of the electric push rod 106 drives the discharge hopper 105 to rotate, thereby opening and closing the bottom port of the storage bin 102 and controlling the discharge amount as needed.

[0043] The platform 1 is equipped with a conveying unit 2, and a drying unit 4 is located in the middle of the top surface of the platform 1. A material leveling unit 3 and a cooling unit 5 are respectively located on both sides of the drying unit 4 at the top of the platform 1. An auxiliary unit 6 is located at the bottom of the platform 1. The material leveling unit 3 evenly spreads the material after it is discharged from the storage bin 102 to prevent uneven thickness. The cooling unit 5 is used to cool the material after it is dried. The auxiliary unit 6 is located inside the conveyor belt 205 and is used to clean the residue attached to the conveyor belt 205.

[0044] The conveying unit 2 includes two upper conveying rollers 201 and two lower conveying rollers 202. The two upper conveying rollers 201 are rotatably connected to both ends of the frame 1, and the two lower conveying rollers 202 are rotatably connected to the support legs at both ends of the bottom of the frame 1. Both ends of the upper and lower conveying rollers 201 and 202 are fixedly fitted with conveying sprockets 203, and the conveying sprockets 203 on the same side are connected by a conveying chain 204. A conveyor belt 205 is provided between the conveying chains 204 on both sides. The conveyor belt 205 is made of high-temperature resistant elastic material and is wound around the outside of the two upper conveying rollers 201 and the two lower conveying rollers 202. A conveying motor 206 is provided at one end of the frame 1. The output end of the conveying motor 206 is connected to the end of one of the upper conveying rollers 201 through a chain drive mechanism. The chain drive mechanism includes a main sprocket and a secondary sprocket fixed to the output shaft of the conveying motor 206 and the end of the upper conveying roller 201, respectively. The main sprocket and the secondary sprocket are connected by a drive chain.

[0045] Specifically, the rotation of the conveyor motor 206 drives the upper conveyor roller 201 to rotate through the chain drive mechanism, and the upper conveyor roller 201 and the lower conveyor roller 202 operate synchronously through the conveyor chain 204, thereby realizing the synchronous operation of the conveyor belt 205.

[0046] The conveyor belt 205 is symmetrically provided with baffles 207 on both sides, and the surface of the conveyor belt 205 is uniformly provided with partitions 208. The partitions 208 and the baffles 207 are perpendicular to each other. The baffles 207 and the partitions 208 form a number of limiting grids. The limiting grids are used to limit the discharged material to prevent the material from scattering. The area of ​​the limiting grids is smaller than the bottom area of ​​the drying hood 402.

[0047] The material leveling unit 3 includes a support 301, which is located on the top of the frame 1. The support 301 is equipped with a mounting plate 302. Both sides of the bottom of the mounting plate 302 are equipped with conductive plates. The bottom of the conductive plates is uniformly equipped with contact rods 303. The contact rods 303 are used to disperse the material in an orderly manner and prevent the discharged material from clumping. When the material passes through the bottom of the mounting plate 302, the bottom of the mounting plate 302 spreads the material evenly.

[0048] The contact rod 303 is made of elastic material. The bottom of the contact rod 303 is lower than the top of the spacer 208. The reason why the contact rod 303 is made of elastic material is so that the contact rod 303 can pass through the spacer 208 smoothly by utilizing its own bending toughness, and prevent interference from the spacer 208.

[0049] The drying unit 4 includes supports 401 symmetrically arranged on both sides of the top of the frame 1. A drying hood 402 is provided between the supports 401 on both sides. A drying fan 403 is provided on the top of the drying hood 402. An electric heating grid 405 is provided inside the drying hood 402. Exhaust troughs 404 are evenly opened on the side of the drying hood 402. It should be noted that the exhaust troughs 404 are used to discharge the water vapor generated during drying. In order to prevent water vapor from being discharged along the length of the drying hood 402 to the material leveling unit 3 and the cooling unit 5 respectively, the exhaust troughs 404 are preferably arranged on both sides along the width of the drying hood 402.

[0050] Specifically, when the material arrives at the drying hood 402, the limiting grid corresponds to the bottom of the drying hood 402. At this time, the electric heating grid 405 and the drying fan 403 are started simultaneously. The airflow generated by the drying fan 403 is heated by the electric heating grid 405 and then discharged to the material to achieve the drying of the material.

[0051] The drying hood 402 is equipped with a temperature and humidity sensor, which is used to monitor the temperature and humidity inside the drying hood 402 so as to adjust the temperature and humidity parameters in a timely manner.

[0052] The cooling unit 5 includes a fixed frame 501, which is located on the top of the frame 1. The two ends of the fixed frame 501 are closed. A cooling fan 502 is provided on the top of the fixed frame 501. Air-gathering plates 503 are rotatably connected to both sides of the fixed frame 501. When the material passes through the fixed frame 501 after drying, the downward airflow generated by the cooling fan 502 is used to cool the material.

[0053] The auxiliary unit 6 includes a fixing plate 601, which is located on the bottom surface of the frame 1. A rotating shaft 602 is rotatably connected to the fixing plate 601. A contact block 604 is provided on the circumferential surface of the rotating shaft 602 through a support rod 603. The contact block 604 corresponds to the position of the drying unit 4. A transmission sprocket 605 is fixedly sleeved at the end of the rotating shaft 602. The transmission sprocket 605 meshes with the conveyor chain 204.

[0054] Specifically, when the conveyor chain 204 is running, it drives the transmission sprocket 605 to rotate. The transmission sprocket 605 drives the rotating shaft 602 and the contact block 604 to rotate. When the contact block 604 gradually rotates to the bottom, it will squeeze the conveyor belt 205 downward. Then, when the contact block 604 rotates continuously, it causes the bottom side of the conveyor belt 205 to vibrate, shaking off the residue attached to the conveyor belt 205.

[0055] In use, the material is stored in the storage bin 102. When discharge is required, the telescopic end of the electric push rod 106 extends, causing the discharge hopper 105 to rotate at a preset angle, opening the bottom port of the storage bin 102. The material is discharged from the bottom of the storage bin 102 and discharged into the limiting grid. The limiting grid limits the discharge of the material. At the same time, the vibration motor 104 starts, and the storage bin 102 vibrates up and down at high frequency through the cooperation of the support spring to prevent the material from blocking during the discharge process. After the bottom opening of the storage bin 102 has been open for a preset time, the electric push rod 106 retracts, causing the discharge hopper 105 to close the bottom of the storage bin 102 and stop the discharge.

[0056] After the material falls onto the conveyor belt 205, the conveyor motor 206 rotates, driving the upper conveyor roller 201 to rotate through the chain drive mechanism. The upper conveyor roller 201 and the lower conveyor roller 202 rotate synchronously through the conveyor chain 204, driving the conveyor belt 205 to rotate, so as to convey the material. The material moves with the conveyor belt 205 and passes under the material leveling unit 3. The bottom surface of the mounting plate 302 corresponds to the top surface of the partition bar 208. The bottom of the mounting plate 302 flattens the material accumulated in the limiting grid. At the same time, when the material passes through the gap between the contact rods 303, the evenly distributed contact rods 303 disperse the clumped material. And because the contact rods 303 are made of elastic material, they can pass smoothly through the partition bar 208.

[0057] When the material reaches the bottom of the drying hood 402, the conveyor belt 205 stops operating. At this time, the limit grid corresponds to the bottom of the drying hood 402. At the same time, the electric heating grid 405 and the drying fan 403 are started. The airflow generated by the drying fan 403 is heated by the electric heating grid 405 and then discharged to the material to dry it. When the temperature and humidity sensor detects that the humidity inside the drying hood 402 is lower than the set threshold, it indicates that the drying is complete. The conveying unit 2 is started to continue conveying the material. When the dried material passes through the fixed frame 501, the conveying stops. The cooling fan 502 is used to cool the material. After cooling, the material is conveyed to the discharge tray 101 for discharge.

[0058] When the conveyor chain 204 is running, it drives the transmission sprocket 605 to rotate, which in turn drives the rotating shaft 602 and the contact block 604 to rotate. The intermittent contact of the contact block 604 with the bottom side of the conveyor belt 205 causes the bottom side of the conveyor belt 205 to vibrate in the vertical direction, which can shake off the residue attached to the conveyor belt 205.

[0059] Example 2

[0060] In actual use, factors such as storage, transportation, and compression can cause significant differences in the total moisture content of the material in each limiting cell, leading to over-drying and under-drying. Furthermore, the electric heating grid 405 is located above the material, making it difficult for the bottom and sides of the material to be fully heated and dried. Moreover, as the moisture content of the material gradually decreases, it tends to solidify on the surface of the conveyor belt 205. Therefore, the following improvements are made:

[0061] The material leveling unit 3 also includes an infrared moisture meter body (not shown in the figure). The infrared moisture meter body is located on the side of the mounting plate 302. When the material passes through the mounting plate 302, the detection end of the infrared moisture meter body faces the conveyor belt 205, and the moisture content of the material passing through the detection end is detected.

[0062] The top of the support frame 401 is equipped with an electric telescopic rod 406. The telescopic end of the electric telescopic rod 406 is fixedly connected to the top of the drying hood 402. The electric telescopic rod 406 adjusts the height of the drying hood 402 and the electric heating net 405 according to the moisture content of the material. When the moisture content of the material is high, the electric telescopic rod 406 extends and drives the electric heating net 405 to descend and approach the material to achieve the effect of heat concentration. When the moisture content of the material is low, the electric heating net 405 rises and moves away from the material.

[0063] Support rod 603 is an electromagnetic telescopic rod used to adjust the distance between contact block 604 and conveyor belt 205.

[0064] During use, when the material passes through the infrared moisture meter body during the conveying process, the infrared moisture meter body detects the total moisture content of the material in a single limit cell. A normal moisture content threshold is set for the total moisture content. When the infrared moisture meter body detects that the total moisture content of the material in a single limit cell is greater than the normal moisture content threshold, it indicates that the moisture content of the material in that limit cell is high. At this time, the electric telescopic rod 406 is activated to drive the drying hood 402 to move downward, so that the electric heating net 405 is closer to the conveyor belt 205, thereby increasing the drying temperature of the material. When the total moisture content of the material in the limit cell is greater than the normal moisture content threshold, the higher the total moisture content of the material in the limit cell, the closer the electric heating net 405 is to the material, and the lowest position that the drying hood 402 can descend is still above the platform 1.

[0065] Conversely, when the infrared moisture meter detects that the total moisture content of the material in a single limit cell is less than the normal moisture content threshold, the electric telescopic rod 406 is used to drive the drying hood 402 upward, so that the electric heating grid 405 moves upward away from the material, thus preventing the material from being over-dried and reducing product quality.

[0066] Because the total moisture content of the material in the limiting compartment is greater than the normal moisture content threshold, more water vapor will be generated during drying. The closer the drying hood 402 is to the material, the slower the water vapor is discharged, and the higher the temperature of the material will be after drying.

[0067] Therefore, when the infrared moisture meter detects that the total moisture content of the material in a single limit cell exceeds the normal moisture content threshold, the conveyor motor 206 rotates reciprocally, causing the conveyor belt 205 to drive the material to rotate back and forth. Simultaneously, the conveyor chain 204 drives the transmission sprocket 605 and contact block 604 to rotate reciprocally. At this time, the top support rod 603 extends, causing the top contact block 604 to move towards the top of the conveyor belt 205. As the top contact block 604 rotates reciprocally, it rapidly and repeatedly squeezes the upper side of the conveyor belt 205 upwards. When the upper side of the conveyor belt 205 is repeatedly squeezed, an intermittent upward airflow is formed within the drying hood 402. This, combined with the downward airflow generated by the drying fan 403, works in conjunction with the intermittent upward airflow to... Two opposing airflows are formed on the upper and lower sides of the drying hood 402, which quickly disperse the water vapor collected in the drying hood 402 to the surroundings and discharge it to the outside through the exhaust trough 404 on the side of the drying hood 402. This accelerates the discharge of water vapor and prevents water vapor from accumulating in the drying hood 402, greatly improving the drying efficiency of the material. While the upper side of the conveyor belt 205 is repeatedly squeezed upwards, the material in the limiting compartment vibrates up and down repeatedly, and the material is turned over, which greatly improves the uniformity of the material drying. In addition, high-moisture materials will stick to the surface of the conveyor belt 205 due to the rapid loss of moisture under high temperature baking and the high viscosity of high-moisture materials. Therefore, the above-mentioned turning over of the material effectively prevents the material from sticking to the surface of the conveyor belt 205.

[0068] When the temperature and humidity sensor detects that the humidity inside the drying hood 402 is lower than the set threshold, the drying is complete. At the same time, the top support rod 603 drives the contact block 604 to retract and reset, and the conveying unit 2 continues to convey normally.

[0069] When drying materials with high moisture content, the materials absorb more heat, resulting in a temperature much higher after drying than that of materials with normal moisture content. This leads to reduced cooling efficiency, and some small-volume residues still adhere to the surface of conveyor belt 205. To solve these problems:

[0070] An adjusting motor 504 is provided on the side of the fixed frame 501, and the output shaft of the adjusting motor 504 is fixedly connected to the end of the wind concentrator 503.

[0071] During use, when the temperature and humidity sensor detects that the temperature inside the drying hood 402 is higher than the set temperature threshold, after the high moisture content material is dried, the regulating motor 504 is actively started to drive the air-gathering plate 503 to rotate, and the angle of the air-gathering plate 503 is adjusted so that the bottoms of the air-gathering plates 503 on both sides are closed together. When the dried material passes through the fixed frame 501, the airflow speed on the surface of the material is accelerated, improving the cooling efficiency. With the air-gathering plates 503 on both sides closed together, the regulating motors 504 on both sides rotate synchronously, causing the air-gathering plates 503 on both sides to swing back and forth. The back-and-forth swing of the air-gathering plates 503 is used to back-and-forth push the dried material in the limiting grid, turning the material over, so as to fully cool the material in each area of ​​the limiting grid. At the same time, it prevents small-volume residues from sticking to the surface of the conveyor belt 205 and being unable to be discharged normally. It also works in conjunction with the auxiliary unit 6 to reciprocate the squeezing vibration on the bottom side of the conveyor belt 205 to further prevent the material from sticking to the surface of the conveyor belt 205.

[0072] Example 2

[0073] This embodiment also provides a drying method for the application of the above-mentioned drying device in the production of textured soy protein, the drying steps of which are as follows:

[0074] S1. Place the material to be dried in the storage silo 102. According to the material characteristics and the required degree of drying, adjust the opening of the discharge hopper 105 by the electric push rod 106 to control the speed and flow of the material discharged from the bottom of the storage silo 102. Use the vibration motor 104 to make the storage silo 102 vibrate and discharge the material through the support spring.

[0075] S2. The conveyor motor 206 drives an upper conveyor roller 201 to rotate through the chain drive mechanism, and drives the conveyor belt 205 to run through the conveyor sprocket 203 and the conveyor chain 204. After the material is discharged from the storage bin 102, it falls into the limiting grid composed of baffles 207 and spacers 208 and is conveyed to the drying unit 4.

[0076] S3. When the material passes through the uniform material unit 3, the contact rod 303 contacts the material, and at the same time, the infrared moisture meter body detects the moisture content in the material that has passed through.

[0077] S4. When the material passes through the drying unit 4, the height of the drying hood 402 is adjusted according to the humidity of the material by the electric telescopic rod 406. The drying fan 403 draws in the outside air and heats it through the electric heating grid 405 to dry the material.

[0078] S5. When the dried material passes through the cooling unit 5 along the conveyor belt 205, the cooling fan 502 is started. According to the drying temperature, the regulating motor 504 drives the air-gathering plate 503 to rotate, changing the intensity of the cooling airflow to cool the material.

[0079] S6. When the conveyor belt 205 is running, the conveyor chain 204 drives the transmission sprocket 605 to rotate, causing the shaft 602 to rotate and driving the contact block 604 to rotate. When the contact block 604 rotates, it generates a downward pushing force with the surface of the lower side inside the conveyor belt 205. The continuous rotation of the contact block 604 can be used to make the lower part of the conveyor belt 205 vibrate, preventing residue from remaining.

[0080] S7. The cooled material is conveyed to the discharge tray 101 by the conveyor belt 205. The material falls from the conveyor belt 205 into the discharge tray 101 and is discharged, completing the entire drying process.

[0081] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A drying apparatus comprising a rack, said rack being provided with a conveying unit, a drying unit being provided in the middle of the top surface of the rack, characterized in that, The top of the frame is provided with a uniform material unit and a cooling unit on both sides of the drying unit, and the bottom of the frame is provided with an auxiliary unit; The uniform material unit comprises a support provided on the top of the frame, and the support is provided with a mounting plate, and the bottom of both sides of the mounting plate is provided with a conductive plate, and the bottom of the conductive plate is uniformly provided with a contact rod; The drying unit comprises supports symmetrically provided on both sides of the top of the frame, and a drying cover is provided between the supports on both sides, and the top of the support is provided with an electric telescopic rod, and the telescopic end of the electric telescopic rod is fixedly connected with the top of the drying cover; The cooling unit comprises a fixed frame, and both sides of the fixed frame are rotatably connected with a wind collecting plate, and the side of the fixed frame is provided with an adjusting motor, and the output shaft of the adjusting motor is fixedly connected with the end of the wind collecting plate; The auxiliary unit comprises a fixed plate, and a rotating shaft is rotatably connected to the fixed plate, and the circumferential surface of the rotating shaft is provided with a contact block through a supporting rod; when the contact block continuously rotates, the bottom side of the conveying belt is vibrated; The conveying unit comprises two upper conveying rollers and two lower conveying rollers, the two upper conveying rollers are rotatably connected to both ends of the frame, the two lower conveying rollers are rotatably connected to the supporting legs at both ends of the bottom of the frame, the ends of the upper conveying rollers and the lower conveying rollers are fixedly sleeved with conveying sprockets, and the conveying sprockets on the same side are drivingly connected through a conveying chain, and the conveying chains on both sides are provided with a conveying belt, and the conveying belt is wound outside the two upper conveying rollers and the two lower conveying rollers; One end of the frame is provided with a conveying motor, and the output end of the conveying motor is drivingly connected with the end of one upper conveying roller through a chain transmission mechanism; The fixed plate is arranged on the bottom surface of the frame, the supporting rod is an electromagnetic telescopic rod, the contact block corresponds to the position of the drying unit, the end of the rotating shaft is fixedly sleeved with a transmission sprocket, and the transmission sprocket is engaged with the conveying chain.

2. The drying apparatus of claim 1, wherein: One end of the frame is provided with a discharge tray, the other end of the frame is provided with a storage bin on the top, the bottom of the storage bin is provided with a supporting rod through a supporting spring, and the bottom side of the storage bin is provided with a vibrating motor; One side of the bottom opening of the storage bin is movably provided with a discharge hopper, and the side of the discharge hopper is provided with an electric push rod, and the fixed end of the electric push rod is movably connected with the side of the storage bin.

3. The drying apparatus of claim 1, wherein: Symmetrical blocking strips are arranged on both sides of the conveying belt, and uniform spacing strips are arranged on the surface of the conveying belt, the spacing strips and the blocking strips are perpendicular to each other, and a plurality of limiting grids are formed between the blocking strips and the spacing strips.

4. The drying apparatus of claim 1, wherein: The uniform material unit further comprises an infrared moisture meter body, and the infrared moisture meter body is arranged on the side of the mounting plate; The contact rod is made of elastic material, and the bottom end of the contact rod is lower than the top of the spacing strip.

5. The drying apparatus of claim 1, wherein: A temperature and humidity sensor is arranged in the drying cover, a drying fan is arranged on the top of the drying cover, an electric heating net is arranged in the inside of the drying cover, and steam grooves are uniformly arranged on the side of the drying cover.

6. The drying apparatus of claim 1, wherein: The fixed frame is arranged on the top of the frame, both ends of the fixed frame are closed, and the top of the fixed frame is provided with a cooling fan.

7. A drying method of the drying apparatus as claimed in claim 1, characterized by: The method comprises the following steps: S1, the material to be dried is placed in the storage bin, according to the material properties and the required drying degree, the opening of the discharge hopper is adjusted by the electric push rod to control the speed and flow of the material discharged from the bottom of the storage bin, and the vibration motor is used to vibrate the storage bin through the supporting spring to discharge the material; S2, the conveying motor drives a conveying roller to rotate through a chain transmission mechanism, and drives the conveying belt to run through a conveying sprocket and a conveying chain, and the material falls into the limiting grid composed of a baffle and a partition after being discharged from the storage bin, and is conveyed to the drying unit; S3, when the material passes through the material uniformizing unit, the contact rod contacts the material, and at the same time, the infrared moisture meter body detects the moisture content in the passing material; S4, when the material passes through the drying unit, the height of the drying cover is adjusted according to the humidity of the material through the electric telescopic rod, the external air is sucked into the material for drying through the electric heating net; S5, when the dried material passes through the cooling unit along with the conveying belt, the cooling fan is started, the strength of the cooling air flow is changed by using the adjusting motor to drive the air collecting plate to rotate according to the drying temperature, and the material is cooled; S6, when the conveying belt is running, the transmission chain drives the transmission sprocket to rotate, the rotating shaft is rotated and the contact block is rotated, when the contact block rotates, the surface inside the lower side of the conveying belt produces a downward thrust, that is, the continuous rotation of the contact block can make the lower part of the conveying belt vibrate, preventing residues from remaining; S7, the cooled material is conveyed to the discharge tray along with the conveying belt, the material falls into the discharge tray from the conveying belt and is discharged, completing the entire drying process.

8. The application of the drying device according to any one of claims 1-6 in the production of drawn egg white.

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