Drying device, drying method and application of drying device and drying method in drawing protein production

Abstract

The invention discloses a drying device, a drying method and application of the drying device in wiredrawing protein production, and relates to the technical field of wiredrawing protein production.The drying device comprises a stand, a conveying unit is arranged on the stand, and a drying unit is arranged in the middle of the top face of the stand; a material uniformizing unit and a cooling unit are arranged at the positions, located on the two sides of the drying unit, of the top of the stand correspondingly, an auxiliary unit is arranged at the bottom of the stand, the material uniformizing unit comprises a support, the support is arranged at the top of the stand, a mounting plate is arranged on the support, and conductive plates are arranged at the bottoms of the two sides of the mounting plate correspondingly; according to the device, materials are evenly distributed during conveying, residues remaining on the conveying part are effectively cleaned, the appropriate drying strength can be correspondingly adjusted according to the moisture content in the soybean drawing protein, the phenomenon of insufficient drying or excessive drying is prevented, water vapor discharge is accelerated, the drying efficiency is improved, and the service life of the device is prolonged. In addition, the textured soybean protein is effectively prevented from being adhered to the conveying part after being dried.

Description

Technical Field

[0001] The present invention relates to the technical field of production of drawn protein, and specifically to a drying device, a drying method and their application in the production of drawn protein. Background Art

[0002] At present, soybean drawn protein is widely used in the fields of meat products, spicy foods, snack foods, etc., and its application in the fields of catering, frozen food processing, etc. has also been relatively mature. In the early processing process, soybean drawn protein contains a relatively large amount of moisture. If it is not dried, the high moisture content will easily lead to the growth of microorganisms, causing the product to deteriorate quickly during storage and transportation.

[0003] Chinese Patent No. 201820954852.8 discloses a drying oven for drawn protein food with a conveying function, including a drying oven body and two vertical support rods, a support frame, a conveyor belt, a number of rollers, a number of heating pipes, a number of refrigeration chips, a circulation fan, two ultraviolet disinfection lamps arranged inside the box, and a feed inlet, a discharge outlet and a control switch arranged outside the box. The two vertical support rods are respectively arranged at both ends of the support frame. The conveyor belt is formed into a conveying loop by a number of rollers. The feed inlet and the discharge outlet are respectively arranged on both sides of the drying oven body, and the feed inlet, the conveyor belt and the discharge outlet are connected in sequence to form a conveying channel. The conveyor belt is provided with a hollow structure and a number of grooves are arranged on the surface of the conveyor belt. The heating pipes are arranged inside the conveyor belt. However, during use, the thickness distribution of the materials on the conveying part is uneven, resulting in uneven drying, and the residues of the materials will adhere to the conveying part, which is prone to bacterial growth.

[0004] In addition, during the production process, the moisture content of the materials is different, resulting in over-drying of the materials with a lower moisture content, while the materials with a too high moisture content cannot be effectively dried, and the water vapor generated during the drying process is difficult to quickly discharge, resulting in poor drying effect. In addition, because soybean drawn protein has a large viscosity when the moisture content is high, and during the drying process, as the moisture decreases, the soybean drawn protein will adhere to the conveying part and is difficult to separate, resulting in damage to the soybean drawn protein, and there will be residues of soybean drawn protein consolidated on the conveying part and it is 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 their application in the production of drawn protein, which can make the materials evenly distributed, and effectively clean the residues remaining on the conveying part. In addition, it can adjust the appropriate drying intensity according to the moisture content in the soybean drawn protein, prevent the phenomenon of insufficient drying or over-drying, and accelerate the discharge of water vapor. In addition, it can effectively prevent the soybean drawn protein from adhering to the conveying part after drying, and can effectively solve the problems in the background art.

[0006] To achieve the above object, the present invention discloses the following technical solutions: A drying device includes a frame. A conveying unit is provided on the frame. A drying unit is provided in the middle of the top surface of the frame. A material leveling unit and a cooling unit are respectively provided on both sides of the drying unit at the top of the frame. An auxiliary unit is provided at the bottom of the frame; The material leveling unit includes a support. The support is provided on the top of the frame. An installation plate is provided on the support. Conductive plates are provided at the bottoms of both sides of the installation plate. Touch rods are evenly provided at the bottoms of the conductive plates; The drying unit includes brackets symmetrically provided on both sides of the top of the frame. A drying hood is provided between the two brackets on both sides. An electric telescopic rod is provided at the top of the bracket. The telescopic end of the electric telescopic rod is fixedly connected to the top of the drying hood; The cooling unit includes a fixed frame. Wind collecting plates are rotatably connected to both sides of the fixed frame. An adjusting motor is provided on the side surface of the fixed frame. The output shaft of the adjusting motor is fixedly connected to the end of the wind collecting plate; The auxiliary unit includes a fixing plate. A rotating shaft is rotatably connected to the fixing plate. A contact block is provided on the circumferential surface of the rotating shaft through a support rod.

[0007] Preferably, a discharge tray is provided at one end of the frame. A storage bin is provided at the top of the other end of the frame. A support rod is provided at the bottom of the storage bin through a support spring. A vibration motor is provided on the side surface of the bottom of the storage bin; A discharge hopper is movably provided on one side of the bottom opening of the storage bin. An electric push rod is provided on the side surface of the discharge hopper. The fixed end of the electric push rod is movably connected to the side surface of the storage bin.

[0008] Preferably, the conveying unit includes two upper conveying rollers and two lower conveying rollers. The two upper conveying rollers are respectively rotatably connected to both ends of the frame. The two lower conveying rollers are respectively rotatably connected to the legs at both ends of the bottom of the frame. Transmission sprockets are fixedly sleeved at both ends of the upper and lower conveying rollers. And the transmission sprockets on the same side are connected by a transmission chain. A conveyor belt is provided between the two transmission chains on both sides. The conveyor belt is wound around the outside of the two upper conveying rollers and the two lower conveying rollers; A conveying motor is provided at one end of the frame. The output end of the conveying motor is connected to the end of an upper conveying roller through a chain transmission mechanism.

[0009] Preferably, blocking strips are symmetrically provided on both sides of the conveyor belt. Partition strips are evenly provided on the surface of the conveyor belt. The partition strips and the blocking strips are perpendicular to each other. A number of limiting cells are formed between the blocking strips and the partition strips.

[0010] Preferably, the material leveling unit further includes an infrared moisture meter body. The infrared moisture meter body is provided on the side surface of the installation plate; The touch rod is made of elastic material, and the bottom end of the touch rod is lower than the top of the partition bar.

[0011] Preferably, a temperature and humidity sensor is provided in the drying hood, a drying fan is provided on the top of the drying hood, an electric heating network is provided inside the drying hood, and exhaust grooves are evenly provided on the sides of the drying hood.

[0012] Preferably, the fixing frame is arranged on the top of the stand, both ends of the fixing frame are closed, and a cooling fan is arranged on the top of the fixing frame.

[0013] Preferably, the fixing plate is arranged on the bottom surface of the stand, the support rod is an electromagnetic telescopic rod, the contact block corresponds to the position of the drying unit, and the end of the rotating shaft is fixedly sleeved with a transmission sprocket, and the transmission sprocket is meshed with a transmission chain.

[0014] The present invention also discloses a drying method using the drying device as described above in the production of drawn protein, the steps of which are as follows: S1. Place the material to be dried in the storage bin. According to the material characteristics and the required drying degree, adjust the opening of the discharge hopper through the electric push rod to control the speed and flow rate of the material discharged from the bottom of the storage bin, and use the vibration motor to vibrate the storage bin through the support spring to discharge the material; S2. Use a conveying motor to drive an upper conveying roller to rotate through a chain transmission mechanism, and drive the conveyor belt to operate through a conveying sprocket and a conveying chain. After the material is discharged from the storage bin, it falls into a limited grid composed of baffles and spacers and is transported toward the drying unit; S3. When the material passes through the material mixing unit, the feeler 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 hood is adjusted by the electric telescopic rod according to the humidity of the material, and the drying fan draws in the outside air and heats the material through the electric heating network to dry it; S5. When the dried material passes through the cooling unit along the conveyor belt, the cooling fan is started. According to the drying temperature, the motor is adjusted to drive the air collecting plate to rotate, change the intensity of the cooling airflow, and cool the material; S6. When the conveyor belt is running, the conveyor chain drives the transmission sprocket to rotate, so that the rotating shaft rotates and drives the contact block to rotate. When the contact block rotates, it generates a downward thrust with the surface of the lower side of the inner part of the conveyor belt. The continuous rotation of the contact block can be used to vibrate the lower part of the conveyor belt to prevent residue from remaining. S7. The cooled material is conveyed to the discharge tray along the conveyor belt, and the material falls from the conveyor belt into the discharge tray and is discharged, completing the entire drying process.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The touch rod of the material leveling unit of the present invention can orderly disperse the material to prevent the material from agglomerating, and the mounting plate can spread the material evenly to avoid uneven material thickness; when the conveyor belt is running, the contact block of the auxiliary unit rotates to generate a downward thrust on the lower surface of the inner side of the conveyor belt, causing the lower part of the conveyor belt to vibrate, effectively cleaning the residue remaining on the conveyor belt and preventing the growth of bacteria.

[0016] 2. The infrared moisture meter body equipped in the material leveling unit of the present invention can detect the moisture content of the material. According to the detection result, 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 drying or over-drying.

[0017] 3. When encountering materials with high moisture content, the present invention drives the conveyor belt and the contact block to reciprocate by rotating the conveying motor forward and backward. At the same time, the top support rod is extended to make the contact block reciprocally squeeze the conveyor belt, forming an intermittent countercurrent airflow in the drying hood, quickly dispersing the water vapor in all directions and discharging it through the exhaust groove, accelerating the airflow movement, improving the drying efficiency, simultaneously realizing the up-and-down vibration of the material, effectively preventing the material from adhering to the surface of the conveyor belt, and at the same time realizing the turning of the material, improving the uniformity of material drying. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the present invention; Figure 2 It is an axonometric structural diagram of the present invention; Figure 3 It is a schematic structural diagram of the present invention from another angle; Figure 4 It is a schematic bottom structure diagram of the present invention; Figure 5 It is a schematic bottom view structure diagram of the present invention.

[0019] In the figure: 1. Stand; 101. Discharge tray; 102. Storage bin; 103. Support rod; 104. Vibration motor; 105. Discharge hopper; 106. Electric push rod; 2. Conveying unit; 201. Upper conveying roller; 202. Lower conveying roller; 203. Conveying sprocket; 204. Conveying chain; 205. Conveyor belt; 206. Conveying motor; 207. Stop bar; 208. Partition bar; 3. Material leveling unit; 301. Support; 302. Mounting plate; 303. Contact rod; 4. Drying unit; 401. Support; 402. Drying hood; 403. Drying fan; 404. Exhaust groove; 405. Electric heating grid; 406. Electric telescopic rod; 5. Cooling unit; 501. Fixed frame; 502. Cooling fan; 503. Wind gathering plate; 504. Adjusting motor; 6. Auxiliary unit; 601. Fixed plate; 602. Rotating shaft; 603. Support rod; 604. Contact block; 605. Driving sprocket. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Embodiment 1 Please refer to Figures 1-5 , this embodiment provides a drying device, including a stand 1. One end of the stand 1 is provided with a discharge tray 101, and the top of the other end of the stand 1 is provided with a storage bin 102. The bottom of the storage bin 102 is provided with a support rod 103 through a support spring. A vibration motor 104 is provided on the side of the bottom of the storage bin 102. 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 through the support spring.

[0022] 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, realizing the opening and closing of the bottom port of the storage bin 102 and controlling the discharge amount as needed.

[0023] A conveying unit 2 is provided on the platform 1, a drying unit 4 is provided in the middle of the top surface of the platform 1, a material leveling unit 3 and a cooling unit 5 are respectively provided on the top of the platform 1 on both sides of the drying unit 4, and an auxiliary unit 6 is provided at the bottom of the platform 1. The material leveling unit 3 evenly spreads the material after the material is discharged from the storage bin 102 to prevent uneven thickness. The cooling unit 5 is used to cool the material after the material is dried. The auxiliary unit 6 is arranged inside the conveyor belt 205 to clean the residue attached to the conveyor belt 205.

[0024] 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 the two ends of the platform 1 respectively, and the two lower conveying rollers 202 are rotatably connected to the legs at the two ends of the bottom of the platform 1 respectively. Both ends of the upper conveying rollers 201 and the lower conveying rollers 202 are fixedly sleeved with conveying sprockets 203, and the conveying sprockets 203 located on the same side are transmission-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. The conveyor belt 205 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 platform 1. The output end of the conveying motor 206 is transmission-connected to the end of an upper conveying roller 201 through a chain transmission mechanism. The chain transmission mechanism includes a main sprocket and a secondary sprocket respectively fixed to the output shaft of the conveying motor 206 and the end of the upper conveying roller 201, and the main sprocket and the secondary sprocket are transmission-connected by a transmission chain.

[0025] Specifically, the conveying motor 206 rotates to drive the upper conveying roller 201 to rotate through the chain transmission mechanism, and the upper conveying roller 201 and the lower conveying roller 202 are synchronously operated through the conveying chain 204, and the synchronous operation of the conveyor belt 205 is also achieved.

[0026] Baffle bars 207 are symmetrically arranged on both sides of the conveyor belt 205, and partition bars 208 are evenly arranged on the surface of the conveyor belt 205. The partition bars 208 and the baffle bars 207 are perpendicular to each other, and a plurality of limiting grids are formed between the baffle bars 207 and the partition bars 208. The limiting grids are used to limit the discharged materials to prevent the materials from being scattered, and the area of ​​the limiting grids is smaller than the bottom area of ​​the drying hood 402.

[0027] The material leveling unit 3 includes a support 301, which is arranged on the top of the platform 1. A mounting plate 302 is provided on the support 301. Conductive plates are provided at the bottom of both sides of the mounting plate 302. Touch rods 303 are evenly provided at the bottom of the conductive plates. The touch rods 303 are used to disperse the material in an orderly manner to prevent the discharged material from agglomerating. When the material passes through the bottom of the mounting plate 302, the bottom of the mounting plate 302 evenly spreads the material.

[0028] The contact rod 303 is made of an elastic material. The bottom end of the contact rod 303 is lower than the top of the partition strip 208. The reason for using an elastic material for the contact rod 303 is that when the contact rod 303 passes through the partition strip 208, it can smoothly pass through the partition strip 208 by using its own bending toughness to prevent being interfered by the partition strip 208.

[0029] The drying unit 4 includes brackets 401 symmetrically arranged on both sides of the top of the frame 1. A drying hood 402 is provided between the brackets 401 on both sides. A drying fan 403 is provided at the top of the drying hood 402. An electric heating grid 405 is provided inside the drying hood 402. Exhaust slots 404 are evenly formed on the side surface of the drying hood 402. It should be noted that the exhaust slots 404 are used to discharge the water vapor generated during drying. In order to prevent the water vapor from being discharged to the material leveling unit 3 and the cooling unit 5 respectively along the length direction of the drying hood 402, the exhaust slots 404 are preferably arranged on both sides along the width direction of the drying hood 402.

[0030] Specifically, when the material reaches the drying hood 402, the limiting grid corresponds exactly 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 air flow generated by the drying fan 403 is heated after passing through the electric heating grid 405 and then discharged to the material to achieve drying of the material.

[0031] A temperature and humidity sensor is provided inside the drying hood 402. The temperature and humidity sensor 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.

[0032] The cooling unit 5 includes a fixed frame 501. The fixed frame 501 is arranged on the top of the frame 1. Both ends of the fixed frame 501 are closed. A cooling fan 502 is provided at the top of the fixed frame 501. Wind collecting 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 air flow generated by the cooling fan 502 is used to cool the material.

[0033] The auxiliary unit 6 includes a fixing plate 601. The fixing plate 601 is arranged 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 drying unit 4. A transmission sprocket 605 is fixedly sleeved at the end of the rotating shaft 602. The transmission sprocket 605 is engaged with the transmission chain 204.

[0034] Specifically, when the transmission chain 204 operates, 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, the bottom side of the conveyor belt 205 vibrates, and the residue attached to the conveyor belt 205 is shaken off.

[0035] During use, the material is stored in the storage bin 102. When discharging is required, the telescopic end of the electric push rod 106 extends to drive the discharge hopper 105 to rotate a preset angle, open the bottom port of the storage bin 102, and the material is discharged from the bottom of the storage bin 102 and discharged into the limit grid. The limit grid limits the discharged material and at the same time, the vibration motor 104 is started, and the storage bin 102 is vibrated up and down with a high frequency through the support spring to avoid material blockage during the discharging process. After the bottom opening of the storage bin 102 is opened for a preset time, the electric push rod 106 contracts to close the discharge hopper 105 to the bottom of the storage bin 102 and stop discharging.

[0036] After the material falls on the conveyor belt 205, the conveying motor 206 rotates, and drives the upper conveyor roller 201 to rotate through the chain transmission mechanism. The upper conveyor roller 201 and the lower conveyor roller 202 are synchronously operated through the transmission chain 204 and drive the conveyor belt 205 to operate to convey the material. The material moves under the material leveling unit 3 with the conveyor belt 205. 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 is used to flatten the material accumulated in the limit grid. At the same time, when the material passes through the gap between the touch rods 303, the evenly distributed touch rods 303 disperse the agglomerated material. Since the touch rods 303 are made of elastic material, they can pass through the partition bar 208 smoothly.

[0037] When the material reaches the bottom of the drying hood 402, the conveyor belt 205 stops running. At this time, the limit grid corresponds to the bottom of the drying hood 402. The electric heating network 405 and the drying fan 403 are started at the same time. The airflow generated by the drying fan 403 is heated by the electric heating network 405 and then discharged to the material to dry the material. When the temperature and humidity sensor monitors that the humidity in the drying hood 402 is lower than the set threshold, it means that the drying is completed, and the conveying unit 2 is started to continue to convey the material. The conveying of the dried material stops when it passes the fixed frame 501, and the cooling fan 502 is used to cool the material. The cooled material continues to be conveyed to the discharge tray 101 for discharge.

[0038] When the conveyor chain 204 is running, it drives the transmission sprocket 605 to rotate, and then drives the rotating shaft 602 and the contact block 604 to rotate. The intermittent resistance of the contact block 604 to the bottom side of the conveyor belt 205 is utilized to realize the vertical vibration of the bottom side of the conveyor belt 205, thereby shaking off the residue attached to the conveyor belt 205.

[0039] Embodiment 2 In actual use, due to the influence of factors such as storage, transportation, and extrusion, the total moisture content of the material in each limiting grid may vary greatly, resulting in over-drying and under-drying of the material. The electric heating network 405 is located above the material, which makes 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, the material is easily solidified on the surface of the conveyor belt 205. Therefore, the following improvements are made: The material leveling unit 3 further includes an infrared moisture meter body (not shown in the figure). The infrared moisture meter body is provided 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.

[0040] An electric telescopic rod 406 is provided at the top of the support 401. 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 grid 405 according to the moisture content of the material. When the moisture content of the material is high, the electric telescopic rod 406 extends to drive the electric heating grid 405 to descend close to the material to achieve the effect of heat concentration. When the moisture content of the material is low, the electric heating grid 405 rises away from the material.

[0041] The support rod 603 is an electromagnetic telescopic rod for adjusting the distance between the contact block 604 and the conveyor belt 205.

[0042] During use, when the material passes through the infrared moisture meter body during transportation, the total moisture content of the material in a single limiting grid is detected by the infrared moisture meter body, and 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 limiting grid is greater than the normal moisture content threshold, it means that the moisture content of the material in this limiting grid is high. At this time, the electric telescopic rod 406 is started to drive the drying hood 402 to move downward, so that the electric heating grid 405 approaches the conveyor belt 205, increasing the drying temperature of the material. And when the total moisture content of the material in the limiting grid is greater than the normal moisture content threshold, the higher the total moisture content of the material in the limiting grid, the closer the electric heating grid 405 is to the material, and the lowest position that the drying hood 402 can descend is still above the gantry 1.

[0043] On the contrary, when the infrared moisture meter body detects that the total moisture content of the material in a single limiting grid is less than the normal moisture content threshold, the electric telescopic rod 406 is used to drive the drying hood 402 to move upward, so that the electric heating grid 405 moves upward away from the material, avoiding over-drying the material and reducing the product quality.

[0044] Since the total moisture content of the material in the limiting grid 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 itself will be after drying.

[0045] Therefore, when the infrared moisture analyzer body detects that the total moisture content of the material in a single limit grid is greater than the normal moisture content threshold, the conveying motor 206 rotates reciprocally forward and backward, so that the conveyor belt 205 drives the material to reciprocate. At the same time, the conveyor chain 204 drives the transmission sprocket 605 and the contact block 604 to rotate reciprocally. At this time, the support rod 603 at the top extends to drive the contact block 604 at the top to move towards the top of the conveyor belt 205. Then, when the contact block 604 at the top rotates reciprocally, it realizes rapid reciprocating upward extrusion on the upper side of the conveyor belt 205. When the upper side of the conveyor belt 205 is reciprocally extruded, an intermittent upward-flowing air current is formed in the drying hood 402. Thus, while the drying fan 403 generates a downward air current, it cooperates with the intermittent upward-flowing air current, so that two opposing air currents are respectively formed on the upper side and the lower side of the drying hood 402, thereby quickly dispersing the water vapor gathered in the drying hood 402 to the surroundings and discharging it to the outside through the exhaust slot 404 on the side of the drying hood 402, accelerating the discharge of the water vapor, preventing the water vapor from gathering in the drying hood 402, greatly improving the drying efficiency of the material. While the upper side of the conveyor belt 205 is reciprocally extruded upward, the material in the limit grid vibrates up and down repeatedly, and at the same time, the material is turned over, greatly improving the uniformity of the material drying. And due to the rapid loss of moisture in the high-moisture material under high-temperature baking and the relatively high viscosity of the high-moisture material, the material will adhere to the surface of the conveyor belt 205. Therefore, the above-mentioned turning of the material effectively prevents the material from adhering to the surface of the conveyor belt 205.

[0046] When the humidity sensor detects that the humidity inside the drying hood 402 is lower than the set threshold, the drying is completed. At the same time, the support rod 603 at the top drives the contact block 604 to contract and reset, and the conveying unit 2 continues to convey normally.

[0047] When drying the above-mentioned high-moisture content material, the material will absorb more heat, resulting in the temperature of the material itself being much higher than the temperature of the material with normal moisture content after drying. Therefore, the cooling efficiency will be reduced, and some small-volume residues will still adhere to the surface of the conveyor belt 205. To solve the above problems: An adjustment motor 504 is provided on the side of the fixed frame 501, and the output shaft of the adjustment motor 504 is fixedly connected to the end of the air-gathering plate 503.

[0048] During use, when the temperature and humidity sensor detects that the temperature in the drying hood 402 is greater than the set temperature threshold, after the high-moisture content material is dried, the regulating motor 504 is actively started to drive the air collecting plate 503 to rotate, and the angle of the air collecting plate 503 is adjusted so that the bottoms of the air collecting plates 503 on both sides are closed together, and the speed of the air flow on the surface of the material is accelerated when the material after drying passes through the fixed frame 501, thereby improving the cooling efficiency. When the air collecting plates 503 on both sides are closed together, the regulating motors 504 on both sides are synchronously reciprocated, so that the air collecting plates 503 on both sides swing back and forth, and the reciprocating swing of the air collecting plates 503 is used to reciprocate and turn over the material dried in the limit grid, so as to achieve sufficient cooling of the material in each area of ​​the limit grid, and at the same time prevent small volume residues from adhering to the surface of the conveyor belt 205 and being unable to be discharged normally, and cooperate with the reciprocating extrusion vibration of the bottom side of the conveyor belt 205 by the auxiliary unit 6, so as to further prevent the material from adhering to the surface of the conveyor belt 205.

[0049] Embodiment 2 This embodiment also provides a drying method for applying the above drying device in the production of fibrous protein, and the drying steps are as follows: S1. Place the material to be dried in the storage bin 102. According to the material characteristics and the required drying degree, adjust the opening of the discharge hopper 105 by the electric push rod 106 to control the speed and flow rate of the material discharged from the bottom of the storage bin 102. Use the vibration motor 104 to vibrate the storage bin 102 through the support spring to discharge the material. S2, using the conveying motor 206 to drive an upper conveying roller 201 to rotate through the chain transmission mechanism, and driving the conveyor belt 205 to operate through the conveying sprocket 203 and the conveying chain 204, the material is discharged from the storage bin 102 and falls into the limit grid composed of the baffle bar 207 and the spacer bar 208 and is transported to the drying unit 4; S3, when the material passes through the material mixing unit 3, the feeler rod 303 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 4, the height of the drying cover 402 is adjusted by the electric telescopic rod 406 according to the humidity of the material, and the drying fan 403 draws in the outside air and heats the material through the electric heating network 405 to dry it; S5, when the dried material passes through the cooling unit 5 along the conveyor belt 205, the cooling fan 502 is started, and the air collecting plate 503 is driven to rotate by the regulating motor 504 according to the drying temperature, so as to change the intensity of the cooling airflow and cool the material; S6. When the conveyor belt 205 is running, the conveyor chain 204 drives the transmission sprocket 605 to rotate, causing the rotating shaft 602 to rotate and driving the contact block 604 to rotate. When the contact block 604 rotates, a downward thrust is generated on the lower surface inside the conveyor belt 205, so that the lower part of the conveyor belt 205 can be vibrated by the continuous rotation of the contact block 604 to prevent residue from remaining. S7. The cooled material is conveyed to the discharge tray 101 along with the conveyor belt 205, and the material falls from the conveyor belt 205 into the discharge tray 101 and is discharged, completing the entire drying process.

[0050] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A drying device, comprising a frame (1), a conveying unit (2) is provided on the frame (1), and a drying unit (4) is provided in the middle of the top surface of the frame (1), characterized in that, A material mixing unit (3) and a cooling unit (5) are respectively provided at the top of the platform (1) and at the positions on both sides of the drying unit (4), and an auxiliary unit (6) is provided at the bottom of the platform (1); The material mixing unit (3) comprises a support (301), the support (301) being arranged on the top of the platform (1), a mounting plate (302) being arranged on the support (301), conductive plates being arranged at the bottom of both sides of the mounting plate (302), and touch rods (303) being evenly arranged at the bottom of the conductive plates; The drying unit (4) comprises brackets (401) symmetrically arranged on both sides of the top of the stand (1), a drying cover (402) is arranged between the brackets (401) on both sides, an electric telescopic rod (406) is arranged on the top of the bracket (401), and the telescopic end of the electric telescopic rod (406) is fixedly connected to the top of the drying cover (402); The cooling unit (5) comprises a fixed frame (501), both sides of the fixed frame (501) are rotatably connected to wind collecting plates (503), an adjusting motor (504) is provided on the side of the fixed frame (501), and an output shaft of the adjusting motor (504) is fixedly connected to the end of the wind collecting plate (503); The auxiliary unit (6) comprises a fixed plate (601), to which a rotating shaft (602) is rotatably connected, and a contact block (604) is provided on the circumferential surface of the rotating shaft (602) via a support rod (603).

2. The drying device according to claim 1, characterized in that: A material discharging tray (101) is provided at one end of the platform (1), a material storage bin (102) is provided at the top of the other end of the platform (1), a support rod (103) is provided at the bottom of the material storage bin (102) via a support spring, and a vibration motor (104) is provided on the side surface of the bottom of the material storage bin (102); A discharge hopper (105) is movably provided on one side of the bottom opening of the material storage bin (102), an electric push rod (106) is provided on the side of the discharge hopper (105), and a fixed end of the electric push rod (106) is movably connected to the side of the material storage bin (102).

3. The drying device according to claim 1, characterized in that: The conveying unit (2) comprises two upper conveying rollers (201) and two lower conveying rollers (202), the two upper conveying rollers (201) are rotatably connected to the two ends of the frame (1), and the two lower conveying rollers (202) are rotatably connected to the legs at the two ends of the bottom of the frame (1), both ends of the upper conveying rollers (201) and the lower conveying rollers (202) are fixedly sleeved with conveying sprockets (203), and the conveying sprockets (203) on the same side are connected by transmission via a conveying chain (204), a conveying belt (205) is provided between the conveying chains (204) on both sides, and the conveying belt (205) 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 platform (1), and an output end of the conveying motor (206) is drivingly connected to the end of an upper conveying roller (201) via a chain transmission mechanism.

4. The drying device according to claim 3, characterized in that: On both sides of the conveyor belt (205), baffle strips (207) are symmetrically arranged. On the surface of the conveyor belt (205), partition strips (208) are evenly arranged. The partition strips (208) and the baffle strips (207) are perpendicular to each other, and a number of limiting cells are formed between the baffle strips (207) and the partition strips (208).

5. The drying device according to claim 1, characterized in that: The material leveling unit (3) further includes an infrared moisture meter body, and the infrared moisture meter body is arranged on the side surface of the mounting plate (302); The touch rod (303) is made of an elastic material, and the bottom end of the touch rod (303) is lower than the top of the partition strip (208).

6. The drying device according to claim 1, characterized in that: A temperature and humidity sensor is arranged inside the drying hood (402). A drying fan (403) is arranged at the top of the drying hood (402). An electric heating grid (405) is arranged inside the drying hood (402). Exhaust slots (404) are evenly formed on the side surface of the drying hood (402).

7. The drying device according to claim 1, wherein: The fixed frame (501) is arranged on the top of the frame (1). Both ends of the fixed frame (501) are closed. A cooling fan (502) is arranged at the top of the fixed frame (501).

8. The drying device according to claim 3, characterized in that: The fixed plate (601) is arranged on the bottom surface of the frame (1). The support rod (603) is an electromagnetic telescopic rod. 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), and the transmission sprocket (605) is engaged with the conveyor chain (204).

9. A drying method of the drying device according to claim 1, characterized in that: Including the following steps: S1. Place the material to be dried in the storage bin (102). According to the material characteristics and the required drying degree, adjust the opening degree of the discharge hopper (105) through the electric push rod (106) to control the speed and flow rate of the material discharged from the bottom of the storage bin (102), and use the vibration motor (104) to vibrate the storage bin (102) through the support springs for discharging materials; S2. Use the conveying motor (206) to drive an upper conveyor roller (201) to rotate through a chain transmission mechanism, and drive the conveyor belt (205) to operate 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 cells formed by the baffle strips (207) and the partition strips (208) and is conveyed towards the drying unit (4); S3. When the material passes through the material leveling unit (3), the touch rod (303) contacts the material. 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 (4), adjust the height of the drying hood (402) through the electric telescopic rod (406) according to the humidity of the material. The drying fan (403) inhales the outside air and heats it through the electric heating grid (405) to dry the material; S5. When the dried material passes through the cooling unit (5) along with the conveyor belt (205), start the cooling fan (502). According to the drying temperature, use the adjusting motor (504) to drive the air gathering plate (503) to rotate and change the intensity of the cooling air flow to cool the material; S6. When the conveyor belt (205) is running, the conveyor chain (204) drives the transmission sprocket (605) to rotate, causing the rotating shaft (602) to rotate and driving the contact block (604) to rotate. When the contact block (604) rotates, it generates a downward thrust with the surface of the lower side of the inner part of the conveyor belt (205). The continuous rotation of the contact block (604) can be used to vibrate the lower part of the conveyor belt (205) to prevent residue from remaining. S7. The cooled material is conveyed to the discharge tray (101) along the conveyor belt (205). The material falls from the conveyor belt (205) into the discharge tray (101) and is discharged, thus completing the entire drying process.

10. Use of the drying device according to any one of claims 1 to 8 in the production of fibrous protein.

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