419 results about "Grain 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 invention relates to the technical field of grain drying, in particular to a sealing structure of a gas-phase rotary heat exchanger and the gas-phase rotary heat exchanger. The sealing structure comprises a rotary shell and gas flow distribution chambers externally embedded in the two ends of the rotary shell, and first annular butt joint grooves are formed in one ends of the inner walls of the two gas flow distribution chambers; second annular butt joint grooves are formed in one ends of the outer walls of the two airflow distribution chambers, first moving rings are fixed to the two ends of the rotating shell, the ends of the first moving rings are attached to the interiors of the first annular butt joint grooves, and sealing shaft sleeves are attached to the gaps between the exteriors of the first moving rings and the inner walls of the second annular butt joint grooves. The rotary shell can be embedded in the airflow distribution chamber to form a sealing structure of the gas-phase rotary heat exchanger, the loss amount of hot fluid at the joint of the rotary shell and the airflow distribution chamber is fully reduced, the heat exchange efficiency of the gas-phase rotary heat exchanger is guaranteed, and the sealing effect of the gas-phase rotary heat exchanger is improved.

The invention relates to the technical field of grain processing, in particular to a grain drying parameter regulation and control system based on correlation analysis, which comprises an identification module for acquiring and processing running state information of a grain dryer and physical attributes of grains and identifying the types of the grains; the strategy module is used for generating a corresponding drying strategy according to the initial physical attributes of the grains and the external environment information; the adjusting module is used for adjusting working parameters of the grain drying machine in real time; the monitoring module is used for monitoring the drying process of the grain drying machine; and the display module is used for displaying the processed running state information and the drying process of the grain drying machine. According to the method, the image information and the physical attributes of the grains are obtained, the grain types are accurately recognized through the machine learning algorithm, therefore, the drying efficiency and quality can be improved, meanwhile, the drying parameters are dynamically adjusted according to the real-time data and the external environment information, and it is further ensured that the drying process is in the optimal state all the time.

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 conveying device for grain processing and production relates to the technical field of grain processing and comprises a grain feeding head, a blocking rod is fixedly arranged at the edge position of the inner side of the grain feeding head, a butt joint is fixedly arranged at the end, away from the grain feeding head, of the blocking rod, and a limiting fixing groove is fixedly formed in the outer side of the end, away from the blocking rod, of the butt joint. The outer side of the limiting fixing groove is slidably sleeved with a grain discharging barrel, and an impurity opening and a rotating sleeve are rotationally arranged on the side, symmetrical to the grain drying machine, of the middle of the grain discharging barrel. According to the conveying device for grain processing and production, by arranging the electromagnetic ring, the electromagnetic controller and other parts and electrifying the electromagnet, impurities such as iron nails and iron wires in flowing grains in the pipeline are captured and prevented from entering precise equipment such as a crusher and a pulverizer, equipment abrasion is avoided, the service life of the equipment is prolonged, and the cost is reduced; iron impurities are prevented from being mixed into the grains, and the quality of the grains is guaranteed.

The invention relates to the technical field of grain drying equipment, in particular to an electric rapid grain discharging device of a grain dryer and an intelligent control method, and the electric rapid grain discharging device comprises a grain storage bin, a grain distributing assembly, a conveying assembly and an intelligent regulation and control unit. The grain distributing assembly achieves flexible grain discharging through a rotating disc and an adjusting ring, the conveying assembly adopts a conveying belt with protruding strips to prevent grain from sliding, and the intelligent regulation and control unit combines multi-sensor data and a fuzzy logic algorithm to dynamically adjust the grain discharging speed and flow. Through structure optimization and intelligent control, the grain discharging efficiency, stability and adaptability are remarkably improved, the problems of unstable flow and low intelligent degree in the prior art are solved, and reliable technical support is provided for modernized agricultural production.

The invention relates to a waste vinasse drying treatment method. The method comprises the following steps: carrying out mechanical pressure filtration on original waste vinasse provided in batches in a solid-liquid separation manner; dehydrating the waste distiller's grains in a manner of removing moisture in the waste distiller's grains and gas influencing the caking rate; and screening the high-fiber waste vinasse and the heated and dehydrated waste vinasse separated from the organic matter-enriched waste vinasse based on a protein content differential separation mode to obtain oversize products for pyrolysis and undersize products for feed. According to the method, more moisture is reserved in the waste distiller's grains with high caking rate in mechanical filter pressing, the water in the waste distiller's grains can enable the waste distiller's grains to be agglomerated more easily, meanwhile, the high heat capacity characteristic of water can provide more uniform heat conduction for the waste distiller's grains, and the situation that the internal and external dehydration uniformity is not uniform due to local overheating of the waste distiller's grains is avoided.

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.

A system configured to collect a representative sample of dried grain from an industrial grain dryer to inform the dryer's automatic temperature controller includes: a plurality of drop tubes each having a top end and a bottom end, wherein the top end of each drop tube is communicatively coupled to a respective dump chute of the grain dryer and configured to receive a respective partial grain sample from the dump chute; connective tubing communicatively coupling the bottom ends of the plurality of drop tubes; an air blower communicatively coupled to a proximal end of the connective tubing, wherein the air blower is configured to propel the partial grain samples distally through the connective tubing; and a collection box communicatively coupled to a distal end of the connective tubing, wherein the collection box is configured to receive and aggregate the partial grain samples into a combined sample for moisture testing.

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 invention belongs to but is not limited to the technical field of grain drying equipment, and discloses a ventilation corner box and double-side grain feeding combined drying system which comprises a ventilation corner box module and a double-side grain feeding anti-blocking elevator module. The ventilation corner box modules are installed in the drying bin and arranged in multiple layers in the vertical direction, the arrangement directions of every two adjacent layers of ventilation corner boxes are perpendicular, the ventilation corner boxes on one layer are transversely arranged, the ventilation corner boxes on the next layer are longitudinally arranged, and a criss-cross structure is formed. A plurality of air uniformizing devices are arranged in the transverse air inlet angle boxes arranged in the length direction of the drying bin at intervals, and ventilation holes are formed in the side walls of the two ends of the longitudinal air outlet angle boxes arranged in the width direction of the drying bin. The double-side grain feeding anti-blocking elevator module is arranged at the lower end of the ventilation corner box module and comprises two sets of symmetrically-arranged grain discharging mechanisms and an elevator. The system integrates multiple functions of drying, lifting, grain discharging, circulating and the like.

The present application relates to the technical field of grain drying, and particularly relates to a combustion chamber convenient to transport and assemble. The combustion chamber comprises a burner, a horizontally placed outer cylinder, a base welded at the bottom of the outer cylinder, an equal-length inner cylinder coaxially fixed in the inner part of the outer cylinder, a connecting rod arranged between the outer periphery of the outer cylinder and the inner cylinder, a screen mesh arranged at one end of the outer cylinder, an end plate arranged at one end of the inner cylinder and outside the screen mesh, a nozzle of the burner penetrating through the end plate and the screen mesh and extending into the inner cylinder, and a heat preservation pipeline connected to the other end of the outer cylinder. The base, the inner cylinder and the outer cylinder are prefabricated in a split manner, which not only saves materials compared with traditional combustion chambers, but also is convenient to transport. The assembled combustion chamber saves time and labor, and the manual construction time is short, which can ensure the construction period. The combustion medium in the inner cylinder is provided with a heat source by the burner, hot air is output through the heat preservation pipeline, the refractory layer prevents the damage of high temperature to the inner wall of the combustion chamber, the cold air door adjusts the supply temperature, and the air tunnel cools the nozzle of the burner located in the inner part of the end plate.

This utility model relates to a material discharge structure for a grain drying channel in a grain discharge section, including a hopper. Multiple grain discharge channels are horizontally arranged at equal intervals above the hopper. Each grain discharge channel has a trapezoidal groove suspended in its upper center. One end of the bottom surface of the trapezoidal groove has multiple material discharge holes evenly spaced along its long axis, and the other end has a stroke hole along its long axis. A control valve plate is attached to the bottom surface of the trapezoidal groove. The control valve plate has valve holes at equal intervals along its long axis, the same number as the material discharge holes, but staggered. A pull rod is suspended directly below the bottom surface of the end of the trapezoidal groove facing the stroke hole. A guide gasket is axially fitted onto the pull rod, and the guide gasket is perpendicularly connected to the bottom surface of the corresponding end of the trapezoidal groove. The outer end of the pull rod passes through the end wall of the corresponding grain discharge channel, and its inner end is connected to a linkage frame located directly below the stroke hole and connected to the control valve plate. This utility model can effectively solve problems such as material accumulation and blockage, and improve drying efficiency and uniformity.

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 utility model relates to the technical field of grain storage and drying, and discloses a grain drying box for grain storage, which comprises a supporting seat, the top of the supporting seat is fixedly connected with a connecting plate, the top of the connecting plate is provided with a grain vibration uniformizing mechanism, and the top of the connecting plate is rotatably connected with a feeding box. A feeding port is formed in the left side of the feeding box, a material guide plate is fixedly connected to the left side of the feeding box, a vibration box is fixedly connected to the left side of the feeding box, a first heating plate is arranged in the box wall of the back of the front face of the vibration box, and a drying mechanism is arranged at the top of the vibration box. Grain is evenly fed into the vibration box, the grain is vibrated and turned over in the vibration box, the drying efficiency is improved, through the arranged drying mechanism, the starting air pump and the heating plate, air is heated firstly, then the air is blown into the vibration box through the air blower, and drying of the grain is accelerated.

The utility model discloses a grain drying device, and belongs to the technical field of grain drying. The grain drying device comprises a drying tower, a drying layer, a material stirring mechanism, a rapid drying layer and a conveying mechanism which are sequentially arranged from top to bottom, the drying layer is provided with an exhaust mechanism, the rapid drying layer is provided with an air inlet mechanism, the drying tower and the drying layer are used for stacking grains, and the material stirring mechanism is used for enabling the grains to move in the rapid drying layer in a dispersed mode. Through cooperation of the drying layer, the shifting mechanism and the quick drying layer, grains are stacked and pre-dried in the drying layer, the overall grain storage amount of the grain drying device is increased, drying of a thick grain layer is achieved, and the overall drying efficiency is improved; the drying rate of the pre-dried grains can be guaranteed under the condition that the flow speed of the pre-dried grains in the quick drying layer is increased, the drying efficiency of the grains is further improved, the grains in the drying layer and the quick drying layer move downwards, air moves upwards, and countercurrent drying is always achieved, so that the drying efficiency is improved.

The invention provides preheating / cooling fluidized bed equipment for grain drying. A feed port assembly is arranged at the top of a fluidized bed shell; wherein the feeding port assembly is connected with a discharging port of the first elevator through a feeding pipe; a discharge hole assembly is arranged at the lower end of the side wall of the fluidized bed shell, and is connected with a lifter II; wherein an upper-layer fluidization plate assembly, a material sliding plate assembly and a lower-layer fluidization plate assembly are sequentially and obliquely arranged in the fluidized bed shell from top to bottom; an air sweeping assembly is arranged above the material sliding plate assembly; the side wall of the fluidized bed shell is connected with an air collecting box, and the air collecting box is provided with three air outlets matched with the upper-layer fluidization plate assembly, the air sweeping assembly and the lower-layer fluidization plate assembly; wherein one end of the air collecting box is connected with the fluidization air system. The low-temperature drying amount is large, free water molecules are taken away by the air speed, and the grain preheating stability is guaranteed.

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.

In some embodiments, a grain drying apparatus may include a drum with a grain auger including a flighting with air holes. The drum may be surrounded by an outer drum, the inner drum including a plurality of drum air holes. A volume of dehydrated air may pass around a helical air diverter, located in an annulus between the inner drum and the outer drum, and through the grain, thereby drying the grain.

The utility model provides a multi-layer sieve plate mechanism for a grain drying and preheating fluidized bed. An upper-layer sieve plate, a material sliding plate and a lower-layer sieve plate are sequentially arranged in a preheating box from top to bottom; an air sweeping box is arranged above the material sliding plate; the upper-layer sieve plate is obliquely arranged at the top of the upper-layer air bellow; the lower-layer sieve plate is obliquely arranged at the top of the lower-layer bellows; the material sliding plate is obliquely arranged in the preheating box; an air chamber pattern plate is arranged at the bottom of the air sweeping box; the air chamber pattern plate is parallel to the material sliding plate; a plurality of air outlets are uniformly formed in the surface of the air chamber pattern plate; and each air outlet is connected with a blowing pipe. Through the arrangement of angles among the upper-layer sieve plate, the material sliding plate and the lower-layer sieve plate, sufficient heat exchange between grains and hot air is ensured, forward throwing force is generated by the grains due to the arrangement of the angles, and the grains are ensured to move forward regularly and orderly; and the grain preheating stability is ensured.

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 present application relates to the technical field of grain drying, in particular to a grain conveying mechanism of a grain dryer, which relates to a grain dryer, comprising: a conveying mechanism body, guide plates, a pressing roller, a pressing belt, a rotating part and an adjusting part; the beneficial effects are: the grains can enter between the two guide plates through the guide slope, the pressing roller is driven to rotate by the rotating part, and the pressing belt is driven to rotate by the pressing roller, the rotating direction of the pressing roller is opposite to the conveying direction of the conveying mechanism body, thereby the grains between the two guide plates are extruded and flattened, the flattening height is equal to the distance between the pressing belt and the conveying mechanism body, thereby the thickness of the grains is thinned, and the grains passing through the dryer can be completely dried without secondary drying, thereby improving the drying efficiency.

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.

The invention discloses grain drying and dust removing integrated equipment which comprises a drying and dust removing box, a feeding pipe is arranged at the position of a center shaft in the drying and dust removing box, the grain drying and dust removing integrated equipment further comprises a feeding mechanism, and the feeding mechanism is used for conveying grain at the bottom in the drying and dust removing box to the top in the drying and dust removing box along the feeding pipe. A spiral guide plate is arranged between the outer wall of the feeding pipe and the inner wall of the drying dust removal box, grain conveyed to the top in the drying dust removal box can fall onto the spiral guide plate and spirally flow from top to bottom along the spiral guide plate, the lower end of the side wall of the spiral guide plate communicates with a hot air supply device, and the hot air supply device is used for providing hot air for the interior of the drying dust removal box. Due to the fact that the grains are in a dispersed state in the process of spirally flowing from top to bottom along the spiral guide plate, and meanwhile, the flowing path of the grains in the drying dust removal box is long, and the retention time of the grains in the drying dust removal box is long, the drying dust removal efficiency of the grains is high, and meanwhile the drying dust removal effect is good.

The utility model discloses grain spreading and airing equipment for wine brewing, and relates to the technical field of wine brewing, the grain spreading and airing equipment comprises a grain spreading and airing rack, a first mounting top plate is fixedly mounted at the edge of the top end surface of one side of the grain spreading and airing rack, and a sliding rail is fixedly mounted at the top end of one side of the first mounting top plate; and the top end of one side of the sliding rail is slidably connected with a sliding top block. Grain needing to be spread and aired is placed in the grain spreading and airing frame, the driving motor controls the driving operation of the driving threaded rod, at the moment, the sliding top block can slide on the sliding rail, the overall position of the connecting arm and the spreading auxiliary cone is adjusted, and the spreading auxiliary cone is used for achieving spreading operation on the grain; and when the paving auxiliary cone moves to one end of the grain spreading and airing frame, the driving motor can be controlled to rotate reversely, so that the reciprocating motion operation of the paving auxiliary cone is realized, and the paving uniformity of the device is further improved.

The agricultural grain conveying device with the quantitative feeding function comprises a supporting plate, a partition plate is fixedly connected to one side of the supporting plate, a conveying belt is rotatably connected to one side of the partition plate, a conveying bin is movably connected to the top of the conveying belt, and a filter screen is fixedly connected to the inner wall of the conveying bin; the inner wall of the conveying belt is rotationally connected with a rotating round rod, and the top of the partition plate is fixedly connected with a feeding box. The invention relates to the technical field of grain conveying devices. When grains enter the feeding box, the grains can be winnowed through the arrangement of a driving motor, a transmission shaft, rotating blades and a filtering inclined bin, impurities are prevented from being contained in the grains, workers do not need to use other equipment to screen the grains, and the working efficiency is improved. And meanwhile, through cooperation of a second belt wheel, a belt, a first belt wheel, a rotating round rod, a conveying belt, a conveying bin and a drying plate, the conveying belt can slowly drive the grains to move, the grains stay at the bottom of the drying plate as long as possible, and the grain drying effect is improved.

The utility model discloses an outdoor grain drying device, and belongs to the technical field of grain drying equipment. The outdoor grain drying device comprises a drying tower, a shell, a platform structure and a first shielding piece, the drying tower is arranged in the shell, the shell is installed on a ground hardened layer, the platform structure is arranged at the top end of the shell, the first shielding piece is installed on the platform structure, and the first shielding piece extends towards the side of the platform structure by a preset distance. According to the utility model, the drying tower is arranged in the shell, and the shell is directly arranged on the ground hardening layer, so that the drying device can be directly arranged outdoors to dry grains, the space utilization rate of the drying device is improved, and the problem of low space utilization rate of the drying device in the prior art is solved.

The application discloses a multi-crop grain drying device and a control method, and belongs to the field of grain drying machines. The device comprises a roller, a heating plate and a fan one. The device is provided with a roller cabin, a warm air cabin and a fan cabin. The warm air cabin is in communication with the fan cabin and the roller cabin. The warm air cabin is fixedly provided with the heating plate. The fan cabin is fixedly provided with the fan one. A filter plate is arranged between the warm air cabin and the roller cabin. The filter plate is uniformly provided with through holes one. A movable partition plate is arranged between the warm air cabin and the fan cabin. Compared with the prior art, the drying device has the advantages of compact structure, small size, household electric drive remote control and multi-crop grain drying. The device can absorb normal temperature air, reduce the dependence on environmental condition changes, and has universality. The device can adjust the warm air direction, and the fan can drive rotation to distribute air flow in the cabin.

The utility model discloses a grain drying tower with uniform grain feeding. The grain drying tower comprises a grain distributing hopper, a grain discharging opening of the grain feeding main pipe is communicated to a grain feeding opening in the upper end of the grain distributing hopper; the upper ends of the four grain distributing branch pipes are respectively communicated with four grain outlets in the lower end of the grain distributing hopper; the rotating shaft is vertically and rotatably arranged on the axis of the grain separating hopper; one end of each supporting beam is fixed to the rotating shaft; the at least three material guide plates are arranged on the at least three supporting beams in a one-to-one correspondence manner; the at least three groups of spacers are respectively arranged on the upper surfaces of the at least three guide plates; and a tower body. According to the grain drying tower with the uniform grain feeding function, it can be guaranteed that all parts in the tower body are fully and uniformly filled with grains to be dried, the technical problem that local grain shortage possibly occurs in the tower body is effectively solved, the grain drying tower can be suitable for grain drying towers of different specifications, and the grain drying quality is effectively guaranteed.

The waste heat recovery mechanism comprises a tower body and a grain channel, the grain channel is vertically arranged in the tower body in a penetrating mode, an air inlet channel and an air outlet channel are formed between the inner wall of the tower body and the outer side wall of the grain channel, the grain channel is of an open structure, a feeding port is formed in the upper end of the grain channel, and a discharging port is formed in the lower end of the grain channel. A cooling section is arranged between the drying section and the discharge port; exhaust fans are arranged at the bottoms of the air outlet ducts; exhaust ports of the exhaust fans are connected with a gas treatment device; a combustion chamber is arranged at the bottom of the air inlet duct and is used for heating air; a first cavity and a second cavity are formed between the outer side wall of the cooling section and the partition section, an air cooler is arranged in the first cavity, and an opening communicated with the combustion chamber is formed in the inner wall of the second cavity.