641results about "Seed preservation by drying" patented technology

The invention relates to the field of grain drying, and discloses a grain drying energy-saving control system based on intelligent optimization, which comprises the following steps: after warehousing grains are detected, judging whether the water content of the grains exceeds a preset safety threshold value or not by collecting the initial water content of the grains and environment temperature and humidity information; according to the grain moisture content, the grain size distribution and the current environment condition, a multi-section type moisture change trend model fitting the drying process is constructed, and the decrease rate of the grain moisture content and the drying curve form in the future stage are predicted; analyzing the deviation value between the water content change slope and the target drying rate in the prediction curve; judging whether an adjustment potential exists or not by modeling a response relationship among the current hot air temperature, wind speed, heat source power and water content change; and according to the heat energy use analysis result, control instructions of hot air temperature, air speed and air supply modes are automatically generated. The self-adaptive energy-saving grain dryer has the advantage that the self-adaptive capacity and the energy-saving effect in the grain drying process are improved.

The partial or full dehydration of organic or inorganic matter containing water by induction of matter into a vacuum and processing matter through a specially designed acceleration channel is disclosed. The inducted matter accelerates in air from zero speed to sub-sonic speed to reach supersonic speed. As the material transitions the sound barrier, it is subject to acoustic shock waves and an instant negative pressure drop occurs. The sound waves disintegrate, disinfect the material and extract part or all moisture from any organic or inorganic material.

Batch type coffee bean and nut drying equipment comprises a drying room, a heat pump heat supply device and an air inlet channel, a first drying screen and a second drying screen are arranged in the drying room and divide the drying room into a heat supply chamber, a first drying chamber and a second drying chamber, the heat pump heat supply device is installed in the heat supply chamber, a discharging opening is formed in the side wall of the first drying chamber, and a discharging opening is formed in the side wall of the second drying chamber. A discharging door is mounted at the discharging opening; a plurality of axial flow fans are installed in the heat supply chamber at intervals, an air inducing opening is formed in the side wall of the heat supply chamber, a part of space is reserved in the upper portion of the first drying chamber to serve as an air inlet cavity, an air inlet is formed in the side wall of the air inlet cavity, and the air inducing opening is communicated with the air inlet through an air inlet channel. Part of hot air in the heat supply chamber is introduced into the air inlet cavity through the air inlet duct, coffee beans or nuts above the second drying chamber are heated, the heating effect on the coffee beans or the nuts above the second drying chamber is guaranteed, and the phenomenon that the coffee beans or the nuts are affected with damp and rotten is avoided.

The utility model discloses a seed screening and drying device for forestry planting and relates to the technical field of seed screening. Comprising a seed conveying mechanism, the seed conveying mechanism is connected with a pneumatic conveying device to convey seeds, a stirring device is arranged in the seed conveying mechanism, the stirring device stirs the seeds to enable the seeds to be separated from impurities, the impurities are blown to be separated by air flow, and a heating mechanism is further installed on the seed conveying mechanism. Seeds entering from a discharging pipe are conveyed into a screening barrel through pneumatic conveying equipment, when the pneumatic conveying equipment blows out airflow, heat generated by a heating rod can be driven to synchronously enter the screening barrel to dry the seeds, and in the drying process, the airflow continues to be supplied into the screening barrel; as the seeds are driven by the stirring blades, light impurities in the seeds float upwards and are discharged through a waste outlet, and moisture is also discharged accordingly, so that the effects that the seeds are dried while being screened, and the screening efficiency is improved are achieved.

The invention discloses an anti-blocking control system and control method for a grain elevator and grain drying equipment, the anti-blocking control system comprises a first rotating speed detection device and a control device, the first rotating speed detection device is used for detecting the rotating speed of the elevator, and the control device is in signal connection with the first rotating speed detection device and a grain stirring wheel. And the control device is configured to control and reduce the rotating speed of the grain stirring wheel under the condition that the rotating speed of the elevator is determined to be reduced according to the detection result of the first rotating speed detection device, so that unsmooth conveying at the elevator can be relieved or avoided until the conveying returns to normal, the subsequent blockage phenomenon can be avoided without increasing the structure of the elevator, and the production efficiency is improved. The purpose of avoiding cost increase is achieved.

The present invention is directed to a method for combining dehydrofreezing and medium to far spectrum infrared radiation to preserve biological material. IR transfers energy and penetrates food products, thereby removing naturally present moisture. The present invention provides a novel method of combining pH treatment, infrared radiation, freezing, and vacuum-sealing for preserving biological material. Biological materials are preserved through either a pH treatment or with heat to remove harmful pathogens, followed by processing using far spectrum infrared radiation which may be powered by either gas or electric means. The processed materials undergo a freezing process which may be done using Individual Quick Freezing or blast freezing methods The frozen processed material is then packaged via vacuum sealing.

The invention relates to the technical field of grain drying equipment, in particular to a hot air supply device for a low-temperature circulating grain dryer, which comprises an air inlet channel, an air supply device and an angular box, the air inlet channel comprises a tempering channel, a drying channel and a cooling channel; the tempering channel is connected with the upper layer of the tower body; the drying channel is connected with the tower body middle layer; the cooling channel is connected with the lower layer of the tower body; the air supply device is connected with the air inlet channel; the angular box is connected with the tower body; a hot air inlet channel is divided into three layers, the flow speed of hot air in the middle layer is the highest, the circulation area of a drying channel can be automatically reduced along with the increase of the humidity of the exhaust side, the air inlet speed of dry hot air is higher, moisture can be rapidly taken away, the number of horn-shaped boxes for exhaust is larger than that of horn-shaped boxes for air inlet, and the air exhaust amount in unit time is increased; the problem that the drying effect on the side close to an exhaust channel is poor due to the fact that the humidity of the hot air inlet side of the drying chamber is low and the humidity of the exhaust side is high is solved.

The invention relates to the technical field of grain processing, and particularly provides a rice raw material drying system for rice processing. Comprising a cylindrical bin, a plurality of separation discs, a plurality of drying bins and a driving mechanism for driving the plurality of drying bins to synchronously rotate; the drying stock bin comprises a stock bin supporting plate which is in lap joint with the lower separation disc, a plurality of annular inserting grooves are fixed to the stock bin supporting plate, floating material chambers are movably inserted into the annular inserting grooves, and a collecting hopper is assembled among the top ends of the floating material chambers in a sliding fit mode; the collection hopper is rotationally mounted at the bottom of the upper separation disc through a bearing and dispersedly guides grains into each floating material chamber; according to the drying system, the effective drying time of the grains is greatly prolonged, the defect that a drying channel is short is overcome, and the drying effect of the grains is guaranteed; in addition, heat source distribution is optimized, the effects of airflow flowing and timely water vapor discharging are enhanced, the effective utilization rate of a heat source is increased, and relative energy consumption is reduced.

The utility model discloses a movable grain drying device which comprises a vehicle body, a lifting device, a grain barrel, a conveying device and a drying assembly, the lifting device comprises a first frame body and a second frame body, and a feeding port and a driven shaft are arranged at the bottom of the first frame body; a driving shaft, a first discharging port, a second discharging port and a discharging baffle are arranged at the top of the second frame body, the grain barrel comprises a first barrel body, a second barrel body and a third barrel body which are sequentially arranged in a sleeving mode from outside to inside, a second telescopic assembly is arranged on the outer side of the grain barrel, and a grain discharging device is arranged at an outlet in the bottom of the first barrel body. The two ends of the conveying device are matched with the grain discharging device and the first frame body respectively, the drying assembly comprises a hot air assembly and a drying cylinder, and the drying cylinder is installed in the grain cylinder. The grain barrel can stretch out and draw back, and the lifting device can be bent, so that the grain drying machine is small in size, low in height, convenient to move and transport and high in grain drying efficiency.

The invention discloses an energy-saving damp and hot airflow drying and air supplementing device for grain drying. A damp and hot air opening, a direct air supplementing opening, a hot air supplementing opening, an air return opening and a dehumidification opening are sequentially formed in a shell from bottom to top. The porous core column is installed in the shell and provided with at least one direct air supplementing channel and at least one damp and hot air channel, an air inlet of the direct air supplementing channel is communicated with the direct air supplementing opening, an air outlet of the direct air supplementing channel is communicated with the air return opening, and an air inlet of the damp and hot air channel is communicated with the damp and hot air opening; the breathable heat accumulator is installed in the shell, an air outlet channel of the breathable heat accumulator communicates with an air outlet of the humid and hot air channel and the dehumidification opening, and an air inlet channel of the heat accumulator communicates with the hot air supplementing opening and the air return opening. The device adopts a means of simultaneously storing moisture removal and air supply, does not cause the fluctuation of the pressure of a drying system, and is suitable for large-scale or long-stroke multi-point airflow moisture removal and drying work; in addition, on the basis of the waste heat recovery function, fresh air supplemented to the outside is heated, the heat loss is small, and the utilization rate is high.

The utility model relates to a uniform and efficient grain storage air drying bin, and belongs to the technical field of grain air drying. The problem that the grain air-drying effect generated by a traditional air-drying bin is not uniform is solved. Comprising a frame, a material blocking net and a rhombus cylinder, the material blocking net is arranged on the frame, and a grain storage bin is defined by the material blocking net; a grain inlet area, a grain storage area and a flow guide area which are sequentially communicated from top to bottom are arranged in the grain storage bin, and a grain inlet is formed in the top of the grain inlet area; the horizontal section size of the flow guide area is gradually reduced from top to bottom, and a grain outlet is formed in the bottom of the flow guide area; a plurality of rhombic cylinders are uniformly distributed in the grain storage bin, the two ends of each rhombic cylinder are connected with the frame, and the two ends of each rhombic cylinder abut against the material blocking net; the interior of the grain storage bin is divided into net-shaped grain storage spaces through the multiple rhombic barrels. The rhombic cylinder is of a thin-wall cylindrical structure, and a front-back through air duct is arranged in the rhombic cylinder; a plurality of ventilation holes are distributed in the side wall of the rhombic cylinder, and the air channel is communicated with the ventilation holes. The grain storage and air-drying device is used for storing and air-drying grains.

The utility model belongs to the technical field of drying equipment, and particularly relates to a ventilation structure of a multifunctional dryer. An upper air pipe is arranged at the top of an inner cavity of the shell, a lower air pipe is arranged at the bottom of the inner cavity of the shell, an air outlet of the fan is connected with the upper air pipe and the lower air pipe through a three-way pipe, the three-way pipe comprises an upper air pipe, a lower air pipe and an air inlet pipe, the upper air pipe is connected with the upper air pipe, the lower air pipe is connected with the lower air pipe, and the air inlet pipe is connected with the air outlet of the fan. The upper air pipe and the lower air pipe are provided with gate assemblies for controlling ventilation of the upper air pipe and the upper air pipe and ventilation of the lower air pipe and the lower air pipe respectively, and the side walls of the upper air pipe and the lower air pipe are provided with a plurality of ventilation openings for ventilation towards an inner cavity of the shell in the length direction of the upper air pipe and the lower air pipe. The drying device can guide hot air flow and is good in drying effect.

The embodiment of the present application provides a temperature adjusting method, a temperature adjusting system, a dryer and a controller for multiple dryers. Each dryer comprises a temperature adjusting mechanism, each temperature adjusting mechanism comprises a hot air door, the multiple dryers use a same heat source, and the temperature adjusting method comprises the following steps: determining a target drying temperature interval of a to-be-dried object in each dryer; in the process of starting the heat source to supply heat to the multiple dryers, acquiring the inlet temperature and the current drying temperature of the hot air door of each dryer in real time, so as to control the temperature adjusting mechanism to adjust the opening degree of the hot air door of each dryer, so that the current drying temperature is in the target drying temperature interval. The hot air is generated by the heat source, and the drying temperature required, the temperature after heat energy loss and the current drying temperature are used to realize accurate temperature control for each dryer. Therefore, heat energy is fully utilized, and the temperature adjusting method of one heat source corresponding to multiple dryers is realized.

The invention provides a processing method of long-term stored food, and belongs to the technical field of food preservation. The invention provides a processing method of long-term storage food, which comprises the following steps: freeze-drying food at low temperature to obtain freeze-dried food; the freeze-dried food is irradiated, and sterilized food is obtained; and carrying out vacuum treatment on the sterilized food to obtain the food capable of being stored for a long time. According to the treatment method provided by the invention, the structure change of the food subjected to low-temperature freeze-drying is more beneficial to irradiation uniform penetrating sterilization, and the irradiated food can better avoid quality deterioration caused by oxidation reaction in a vacuum environment. The result of the embodiment shows that the processing method provided by the invention can efficiently control the number of microorganisms in the food for a long time, maintain the color and luster of the food, maintain the sensory quality of the food and maintain the nutritional ingredients of the food.

The invention provides low-GI healthy hulless oat premixed dumpling flour without starch-containing wheat flour and a preparation method of the low-GI healthy hulless oat premixed dumpling flour, and belongs to the technical field of food processing. According to the premixed flour, hulless oat flour is used as a main material, buckwheat flour, soybean meal, sesame powder, multiple kinds of protein (soybean protein, vital gluten and egg white protein) and konjaku flour, flaxseed powder, radix puerariae powder, semen cassiae powder and other natural ingredients are matched, and the boiled dumpling wrappers are prepared through the processes of scientific raw material matching, mixing and smashing, drying and the like. The technical problems that dumpling wrappers made of high-proportion hulless oat flour are difficult to form, are not resistant to boiling and are not formed when the wrappers are broken during boiling under the condition that wheat flour containing starch, edible gum and the like are not added are solved, and the formability, the chewiness, the elasticity and the ductility of the dumpling wrappers are remarkably improved. The product has the characteristic of low glycemic content and good processability, and is suitable for diabetics and healthy diet demanders.

The application discloses a monitoring system of a heat pump type low-temperature circulating grain dryer based on the Internet of Things, which includes a data acquisition module, a data transmission module, a safety control module and a remote monitoring module; where the data acquisition module is used for obtaining data of a low-temperature circulating dryer and a multistage air source heat pump; the safety control module is used for automatically controlling a motor according to the data; the data transmission module is used for transmitting data to the cloud server; the remote monitoring module is used for graphically displaying the data, performing an alarming and sending control commands on the low-temperature circulating dryer and the multistage air source heat pump; and the data acquisition module, the safety control module and the data transmission module are wirelessly connected with the remote monitoring module.

The invention relates to the technical field of drying processing, in particular to an automatic drying device and method for grain processing, and the automatic drying device comprises a base, a roller, an adjusting unit and a hot air unit. According to the grain drying machine, the length of a material curtain raised by grains in the accumulation area is reduced by means of the adjusting unit, namely, the uniformity of the raised grains is reduced, the material curtain formed when the second raising plate raises the grains in the middle drying area is uniform and is in the maximum length, the grains are uniformly dispersed and dried, and the drying efficiency is improved. Therefore, the problem that grains are overheated due to the fact that the grains are excessively raised close to a hot air area is avoided, and internal and external common drying is formed through a hot air cylinder, an air outlet sleeve and an auxiliary heating ring in the hot air unit. Meanwhile, in the middle drying area, it is ensured that hot air still has heat needed for drying after flowing from right to left by means of heat transferred into the auxiliary heating ring after the roller is heated, and the drying effect of the middle drying area (away from a large amount of hot air outlet area) on the grains is improved.

The utility model relates to the technical field of flour processing, in particular to an airflow type flour drying device which comprises a tank body, a fixed base and a sieve plate, an industrial motor is arranged in the center of the top of the tank body, a feeding port is formed in the side, corresponding to the industrial motor, of the top of the tank body, and an air window is formed in one side of the surface of the tank body; a fixed base is arranged at the bottom of the tank body, a discharge valve is arranged at the bottom of the fixed base, and supporting columns are arranged on the periphery, corresponding to the discharge valve, of the bottom of the fixed base. An industrial motor drives a connecting column to drive a scraping plate to rotate so that caked and stacked flour on a sieve plate can fall into a tank body after being crushed, a hot air blower continuously blows hot air flow to the falling flour through a hot air pipeline and a hot air connecting pipe in cooperation with a hot air nozzle, and the temperature in the tank body is further increased; and the airflow drives the flour to be continuously scattered, so that the drying uniformity of the flour is effectively ensured, and the quality of the dried flour is improved.

The utility model provides a nostoc sphaeroids kutz drying device which comprises a main machine body, a feeding port is formed in the top of the main machine body, supporting legs used for supporting the main machine body are installed at the four corners of the bottom of the main machine body, and a sealing door is installed on one side of the main machine body. According to the nostoc sphaeroids kutz drying device, materials are fed from the feeding port, then enter the material guide bin, fall onto the first material guide plate and slide towards the first infrared heating plate under the action of gravity, the first infrared heating plate conducts primary heating and drying, meanwhile, the servo motor operates and drives the transmission mechanism to operate, nostoc sphaeroids kutz on the lower layer is turned to the upper layer, and nostoc sphaeroids kutz is dried. Nostoc sphaeroids kutz on the lower layer is prevented from being heated unevenly, and a first fan, a second fan and a third fan on the two sides are matched for blowing air layer by layer, so that the nostoc sphaeroids kutz with the high water content can be dried through the equipment, nostoc sphaeroids kutz is heated more evenly, and the nostoc sphaeroids kutz drying effect and the discharging quality are further improved.

This utility model discloses a graphene infrared static grain dryer, relating to the field of grain processing technology. It includes a conveyor support frame, with a turning bracket fixedly connected above the frame. A turning drive assembly and an air pump are fixedly connected to the upper end of the turning bracket. Turning assembly one and turning assembly two are fixedly connected to the movable ends on both sides of the turning drive assembly, respectively. An air supply pipe is fixedly connected to the air outlet of the air pump, and the other end of the air supply pipe is fixedly connected to turning assembly one and turning assembly two. Turning assembly one and turning assembly two each include a turning plate, a triangular boss, and an air blowing groove. This utility model uses two sets of symmetrically installed swing rods to drive turning assembly one and assembly two to reciprocate in opposite directions. The hollow structure inside the turning plate, combined with the air pump supply, first pushes the grain through airflow during movement, then physically turns it through the triangular boss, achieving uniform heating on both sides of the grain, reducing mechanical contact damage, and ensuring thorough turning of the grain.

The utility model belongs to the technical field of agricultural product drying equipment, and particularly relates to a heat source device of a grain dryer. One end of the shell is provided with a shell air inlet, the other end of the shell is provided with a shell air outlet, the shell air outlet is provided with an air blower connecting structure, an air duct piece is arranged in the shell, one end of the air duct piece is correspondingly connected with the shell air inlet, and the other end of the air duct piece is correspondingly connected with the shell air outlet; a plurality of heating plates which are arranged at intervals up and down are fixedly arranged in an inner cavity of the air duct piece through a mounting bracket, each heating plate is horizontally arranged, and the heating plates are microcrystalline glass plates coated with electrothermal films and conductive electrodes. According to the utility model, the heating efficiency can be effectively improved, and the use cost is saved.

The utility model relates to the field of assembling of bucket elevators and grain dryers, in particular to a self-locking clamping butt-joint fixing device which comprises a lock hook assembly arranged on a bucket elevator barrel, the lock hook assembly comprises a pull plate rotationally connected with the bucket elevator barrel, and a pull rope and a clamping hook are arranged at the two ends of the pull plate respectively; the locking arm assembly is arranged on the grain dryer barrel, and the locking arm assembly is provided with a clamping groove matched with the clamping hook; the clamping hook of the lock hook assembly can be correspondingly clamped in the clamping groove of the lock arm assembly so that the bucket elevator can be fixedly locked to the grain dryer, and the clamping hook can be separated from the clamping groove by pulling the pull rope so that locking between the clamping hook and the clamping groove can be relieved. No special climbing equipment is needed, the bucket elevator can be quickly locked to the grain drying machine, and meanwhile locking between the bucket elevator and the grain drying machine can be quickly relieved.

The invention relates to low-damage endosperm rice and a preparation process thereof. Specifically, the invention provides a brown rice milling method, the method comprises the steps of unhusked rice opening and fine milling, and the method comprises the step of controlling the protein retention rate, the damaged starch content and the protein-to-ash ratio of milled brown rice to be in the following ranges: the protein retention rate is 88.0% or above, the damaged starch content is 0.480% or below, and the ash-to-protein ratio is 0.055 or above.

The utility model relates to the technical field of agriculture, and discloses a biomass hot-blast stove for drying rice, which comprises a hot-blast stove, the top of the hot-blast stove is fixedly connected with a smoke exhaust pipe, the inner wall of the smoke exhaust pipe is inserted with a filter screen, the left side and the right side of the filter screen are inserted with limiting insertion blocks, and the inner walls of the two limiting insertion blocks are connected through a fixing assembly. Four supporting rods are fixedly connected to the bottom of the hot blast stove, pulleys are rotationally connected to the inner walls of the supporting rods, and the front sides and the rear sides of the pulleys are connected through limiting assemblies so that the pulleys can be fixed. According to the utility model, smoke is filtered through the filter screen, the crank is rotated to enable the two limiting insertion blocks to slide to unfasten the fixation of the filter screen, and the filter screen is pulled out to be replaced and is cleaned and replaced; therefore, the replacement speed of the filter screen is increased, and the working efficiency is improved.

The invention provides movable grain drying equipment, and relates to the technical field of grain drying, the movable grain drying equipment comprises a movable chassis, a hot blast stove is mounted on the movable chassis, the hot blast stove is connected with a hot air box, a drying cylinder is mounted on the hot air box, the drying cylinder is connected with a conveying mechanism, and one end of the conveying mechanism is communicated with the lower end of the drying cylinder; a grain outlet is formed in the other end of the conveying mechanism; an air inlet and an air outlet are formed in the side wall of the drying cylinder, the air inlet is located in the lower portion of the drying cylinder and communicates the drying cylinder with the hot air box, and the air outlet is located in the upper portion of the drying cylinder and communicates the drying cylinder with the outside; multiple layers of sieve plates are installed in the drying cylinder, sieve holes are formed in the plate faces of the sieve plates, a scraper is correspondingly installed above each sieve plate and connected with a rotating shaft, the upper end of the rotating shaft is connected with a first motor, the first motor is fixed to the top of the drying cylinder, and a grain inlet allowing grain to enter is further formed in the top of the drying cylinder. The technical problems that in the prior art, during grain drying, energy consumption is large, and the crack ratio is high are solved.

The utility model provides a soaking and screening device for soybean seed breeding, and relates to the technical field of soybean seed breeding. A soybean seed breeding, soaking and screening device comprises a base, a material conveying bin, a feeding bin, mounting shells, first guide rods, a first screening plate, a second screening plate, a cam, a motor and a first elastic piece, the material conveying bin is mounted on the base, the feeding bin is mounted on the material conveying bin, the feeding bin is communicated with the material conveying bin, and the mounting shells are mounted on the two sides of the material conveying bin. First guide rods are fixedly connected into the mounting shell, a second screen plate is arranged on the first guide rods on the two sides in a sliding mode, first elastic pieces are wound around the first guide rods, a first screen plate is mounted on the second screen plate, a motor is mounted on one side of the conveying bin, and a cam is fixedly connected to an output shaft of the motor. By starting the first draught fan, coats, dust, impurities and the like of soybean seeds are sucked into the storage box to be collected, the soybean seeds can be prevented from being sucked into the storage box through the first protective guard, and the effect of sucking away impurities and chippings is achieved.

The utility model relates to the technical field of grain processing, in particular to grain drying equipment which comprises a drying cylinder arranged on a support, the drying cylinder is vertically arranged, a feeding port is formed in the top of the drying cylinder, a discharging port is formed in the bottom of the drying cylinder, and the bottom of the drying cylinder communicates with an air supply pipeline; the device further comprises a stirring structure arranged in the center of the drying barrel, a power air cylinder is arranged at the top of the drying barrel, the stirring structure is fixedly connected with the power air cylinder and moves up and down in the drying barrel, a material scattering groove is formed in the drying barrel, and a plurality of material scattering holes are formed in the peripheral side and the bottom of the material scattering groove. The scattering groove is communicated with the feeding port and rotates around the top of the drying cylinder. The grain drying device has the effects of reducing grain accumulation and improving the drying efficiency.

The utility model relates to the technical field of grain drying machine discloses a hot -blast recovery mechanism based on grain drying machine, including recovery box, the left side of recovery box is provided with recovery hot -blast mechanism, the inner wall left side of recovery box is provided with filter equipment, the inner bottom wall right side of recovery box is fixedly installed with heating pump, the top wall middle part rotation of recovery box is connected with the movable door, recovery hot -blast mechanism includes the concentration pipe, the bottom of concentration pipe is linked in the left side of recovery box, the bottom wall left and right sides of concentration pipe all are linked with the connecting shell, the bottom of connecting shell is linked with the collection pipe, the top wall right side of recovery box is linked with the delivery pipe. In the utility model, the hot -blast is recovered and draws through the collection pipe, and simultaneously due to the hot -blast having the heat, makes the energy reduction of heating pump consumption, thereby to the hot -blast heating again after again delivery, reaches the effect that the hot -blast recycles, effectively avoided the hot -blast use efficiency decline.

The invention relates to the technical field of agriculture, in particular to a soybean drying device which comprises a machine base, a support, a vertical plate, a hollow shaft and a drying cylinder, the support and the vertical plate are fixedly connected to the left side and the right side of the upper surface of the machine base respectively, the hollow shaft is installed at the top of the vertical plate through a bearing, and the right end of the drying cylinder communicates with the hollow shaft. The support supports the left side of the drying cylinder, the drying cylinder is used for storing soybeans, a driven gear is installed on the outer wall of the hollow shaft, a plurality of releasing mechanisms are installed on the outer wall of the drying cylinder from left to right in the circumferential direction at equal intervals, and soybeans with not full particles are discharged outwards through the releasing mechanisms. The soybean screening device overcomes the defect that traditional equipment is not timely in exhaust, avoids overhigh local humidity, remarkably shortens the drying period, can meet the screening requirements of soybeans with different particle sizes, not only can remove shriveled soybeans and impurities in the reserved soybeans to improve the germination rate, but also can screen qualified soybeans for processing links such as oil squeezing and smashing, reduces subsequent processing procedures and reduces the production cost.

This invention discloses a gradient dehydration type grain dryer, relating to the field of grain drying technology. It includes a drying shell with a hot air pipe fixedly connected to its side wall. A dehydration device is installed inside the drying shell. The dehydration device includes a central shaft and dehydration components. The central shaft includes a sleeve and a movable shaft that are slidably connected. Both ends of the sleeve are fixedly connected to the inner side wall of the drying shell. The dehydration components include a grain tray and a top cover fixedly connected to each other. The grain tray is bowl-shaped. A connecting shaft is fixedly connected to the outer side wall of the movable shaft. A fixing ring is fixedly connected to the other end of the connecting shaft. A limit plug is fixedly connected to the side of the fixing ring facing the corresponding grain tray. The limit plug blocks or separates the hole in the middle of the grain tray, thus blocking or discharging the grain on the inner side wall of the grain tray, preventing the grain from remaining in the grain tray for too long. This solves the technical problem of heavy grain accumulating in the drying hopper and affecting the drying effect.