295 results about "Grain drying" patented technology

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 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 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 present application discloses a grain dryer dust removal equipment, comprising: a dust removal device connected to the grain dryer, the dust removal device has a main body part, the top of the main body part is connected to the air suction fan and the bottom is connected to the grain dryer, the middle part of the main body part is a dust removal part, the dust removal part has a plurality of through holes, a filter part is installed in the through hole, a pulse part is installed above the filter part, a opening and closing structure is arranged below the filter part for opening and closing the bottom opening of the filter part, the filter part is closed for a preset time after the pulse part sprays high pressure air to make the filter part store high pressure air for a preset time, and the filter part comprises a dust removal cloth bag installed in the through hole. The above structure realizes high pressure vibration of the dust removal cloth bag, prolongs the storage time of high pressure air in the dust removal cloth bag through the closing mode, avoids blockage of the dust removal cloth bag, and improves the filtering efficiency.

The utility model relates to the technical field of grain drying equipment, in particular to a high-efficiency energy-saving type grain layered drying device, which is characterized in that chain type conveying belts are arranged in an advancing type drying furnace in a penetrating manner, two material loading tables are respectively arranged on the left sides of an upper group of chain type conveying belts and a lower group of chain type conveying belts, and two groups of material pushing electric push rods are fixedly arranged on a mounting frame in an up-down arrangement manner; the material pushing plate is fixedly arranged on an output shaft of the material pushing electric push rod, and the two feeding stepping belts are erected on the front side of the upper material carrying table and the front side of the lower material carrying table correspondingly; by arranging the screening structure, coarse materials and fine materials can be classified at the front end of the drying procedure according to the particle sizes of the materials, then the materials are fed into the drying equipment in a multi-group parallel mode after being evenly spread, different drying technological processes are selected according to the materials with different characters, the drying steps are reasonably planned, and the drying efficiency is improved. And efficient and energy-saving machining of the equipment is achieved.

This invention discloses a grain dryer with humidity control, relating to the field of grain drying technology. Specifically, it includes a drying tower with a supporting base plate fixedly connected to its bottom. The drying tower contains a drying assembly, which includes a drying unit, a lifting unit, a humidity control unit, a delay unit, and a transmission unit. The humidity control unit includes a protective sleeve, inside which an electrically heated mesh is fixedly installed. This grain dryer heats the grain using the electrically heated mesh, and, in conjunction with an exhaust fan and a guide fan unit, discharges the moisture-laden air, enabling rapid drying of the grain. A humidity detection ring monitors the humidity of the heated grain, facilitating control over its moisture content. The grain is heated evenly throughout, and as it rises within the drying mesh, it vibrates continuously during this ascent, concentrating the heating and ensuring effective drying.

The utility model relates to the technical field of grain processing production, and disclose a kind of waste heat recovery evaporation tank for grain drying, including evaporation tank box, the evaporation tank box one end two two symmetrical rotation installation has evaporation tank door, the utility model is provided with waste heat recovery tank and heat exchange pipe body, can effectively recover high-temperature waste heat generated in the process of grain drying, and it is used for heating water and other media, and the water medium after heating can be used in other production links of enterprise, such as heating, hot water supply etc., greatly improve energy utilization efficiency, reduce the energy consumption cost of enterprise, simultaneously by being provided with telescopic air cylinder, rotary motor and cleaning brush structure, the outer wall of heat exchange pipe body can be effectively cleaned, avoid the case of preventing dust and other impurities from adhering on heat exchange pipe body and affecting heat exchange effect, further improve the service life of heat exchange pipe body.

The utility model discloses an unprocessed grain drying tower with a waste gas settling and collecting mechanism, and relates to the technical field of agricultural mechanical equipment, the unprocessed grain drying tower comprises a grain drying tower, the left side of the grain drying tower is fixedly connected with two groups of hot air pipes, and the unprocessed grain drying tower with the waste gas settling and collecting mechanism is provided with a cyclone separator and a paper filter plate. When the grain drying tower is used, the sucking pump can be started to suck waste gas in the grain drying tower into the cyclone separator for sedimentation, after the waste gas enters the cyclone separator, linear motion of airflow is changed into circular motion, particles move towards the conical wall of the barrel under the action of centrifugal force, and large particles are spirally thrown downwards into the storage box to be collected. Light-weight air is sucked into the air sucking pump through the air outlet, is firstly primarily filtered by the paper filter plate, then is secondarily filtered by the molecular sieve filter plate, and finally is finally filtered by the activated carbon filter plate, so that the waste gas is deodorized, and the problem that the device cannot settle and collect the waste gas is solved.

The utility model discloses a continuous grain drying and threshing device relates to grain drying technical field, including base, the top fixed mounting of base has the support, the top fixed mounting of support has the drying mechanism. The utility model adopts above -mentioned structure, through setting up hot -blast component, with mounting panel fixed hot -blast machine, cooperate and supply hot -blast pipe with hot -blast hopper, make hot -blast can continue even send into drying cylinder, set up agitating component simultaneously, and first motor drives the rotation of pivot and drives the rotation of material -turning net board, makes grain fully turn over to prolong hot -blast contact time, still through the side arm of plugging component, second motor, the cooperation annular support fixed track and support slide block make plugging board stable sealing discharge chute reduce hot -blast leakage, and then promote drying efficiency, guarantee grain drying even, and the support is combined and supports and realizes continuous operation, solves the low drying efficiency in the prior art, and grain is unevenly heated, and hot -blast is easy to leak, and the overall production efficiency is low to the problem that traditional equipment divides the stage operation.

1. The name of the design product: vertical and horizontal ventilation corner box module structure. 2. The use of the design product: used in grain drying equipment to form air flow channel, improve drying efficiency. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: design 1 perspective view 1. 5. Design 1 is designated as the basic design.

The utility model relates to the technical field of grain drying equipment, in particular to a pulse type grain drying fluidized bed which comprises a drying chamber, an air inlet injection pipeline is connected to the bottom of the drying chamber, a feeding bin and an exhaust pipeline are connected to the upper portion of the drying chamber, and the interior of the air inlet injection pipeline is divided into a plurality of air inlet channels through a plurality of partition plates. The air inlet directions of the air inlet channels are inclined, and air door mechanisms capable of controlling the air inlet channels to be opened and closed intermittently are arranged in the air inlet channels. Segmented air intake is adopted at the bottom of the drying chamber, and intermittent pulse type air intake is adopted in each section of air intake channel, so that impact force for forward movement is generated on grains while hot air intake dries the grains, the grains gradually move towards the direction of the discharging bin, grain accumulation is avoided, meanwhile, it is guaranteed that the grains make full contact with hot air, and the grain drying efficiency is improved. The drying efficiency is improved.

This invention provides a waste heat recovery system and method for high-temperature steel billets based on phase change heat storage. A downcomer is arranged on the outer wall of the cooling chamber, with its first end connected to the boiler drum and its second end connected to a water collection tank. The inner cavity of the water-cooled wall is connected to both the boiler drum and the water collection tank. A heat-conducting oil radiant heat exchanger connected to a medium-temperature phase change heat storage device is arranged in the upper part of the cooling chamber. A flue connected to the cooling chamber is arranged above the steel billet inlet / outlet channel of the cooling chamber. A hot water tube bundle, a feedwater preheater, an air preheater, and an air filter are arranged sequentially within the flue. The outlet of the air preheater is connected to the air duct of the cooling chamber via a pipeline. A cold water source is connected to the feedwater preheater. The outlet of the feedwater preheater is connected to the inlet of the hot water tube bundle. The outlet of the hot water tube bundle is connected to the boiler drum. The outlet of the air filter is connected to a grain drying tower via an induced draft fan. This invention realizes the reuse of waste heat from high-temperature steel billets.

The application discloses a drying device for mixed coarse grain raw material pretreatment, relates to the technical field of coarse grain drying devices, and solves the technical problem of large temperature difference between the just-entered coarse grain and hot air and uneven drying. The device comprises a drying roller, which is slightly inclined and installed on the top of a drying machine rack; a uniform drying mechanism installed on the drying roller, which comprises a plurality of air supply pipes embeddedly installed on the inner wall of the drying roller, an arc-shaped air guide pipe for supplying hot air to the inside of the drying roller, and a heating member sleeved on the right end of the drying roller for supplying hot air; the generated hot air can be uniformly supplied to each sieve plate, and the drying temperature of each sieve plate can be controlled according to the drying time of the coarse grain, so that the hot air drying of the coarse grain can be fully realized, the large temperature difference that affects the drying uniformity can be avoided, the time for heating the gas is prolonged, the gas heating is uniform, and the drying quality and efficiency of the coarse grain are improved.

The invention provides a thermal cycle grain drying tower. The thermal cycle grain drying tower comprises a tower framework and an outer wall heat preservation plate. The tower framework is wrapped by the outer wall heat preservation plate to form a closed drying tower. A hot air channel and a cold air channel are formed between the two sides of the interior of the tower framework and the outer wall heat preservation plate correspondingly, and a stock bin channel is formed between the cold air channel and the hot air channel. A feed port is formed in the top of the bin channel, and a stop valve is arranged at the bottom; a scraper conveyor is arranged at the bottom of the tower framework, corresponds to the stock bin channel and is used for conveying grains discharged from the stock bin channel; a lower fan and a burner are further arranged at the bottom of the tower framework; the lower fan is communicated with the hot air channel and the cold air channel; the burner is arranged on one side of the hot air channel and used for providing hot air for the hot air channel. Hot air can enter the cold air channel through the stock bin channel; an upper fan is arranged on the top of the cold air channel and used for exhausting air. According to the invention, the heat energy utilization efficiency is greatly improved, the energy consumption of the burner is reduced, and the operation cost is saved.

The utility model discloses a kind of drying machines for mixed coarse grains, including cabinet, the inside fixed connection of cabinet has belt conveyor, the side of cabinet is provided with drying assembly, the inside of cabinet is provided with poking assembly;The poking assembly includes motor;The output shaft of motor is connected with connecting belt through belt pulley sleeve;The connecting belt is connected with screw rod by sleeve joint pulley;The outer wall of screw rod is connected with threaded sleeve;The bottom fixed connection of threaded sleeve has poking frame.This drying machine for mixed coarse grains can make motor can drive connecting belt to rotate, can make connecting belt can drive screw rod to rotate, can make screw rod can rotate in threaded sleeve, can make poking frame can rely on external two sides slip sleeve along the outer wall of slide bar, and then can reach the back-and-forth movement of poking frame, can back-and-forth poking and scatter material, can improve the drying treatment of coarse grain.

The utility model belongs to the technical field of agricultural equipment, and particularly relates to a grain drying device which comprises a drying box body, a hot air blower box is installed on one side of the bottom end of the drying box body, and an air inlet pipe of the hot air blower box penetrates through a vertical pipe portion of an exhaust pipe of an L-shaped box body. The hot air is fully contacted with the air inlet pipe before being exhausted, so that the heat energy is recycled; according to the structure, waste heat in hot air can be effectively recycled, the heat energy utilization rate is increased, the operation energy consumption of the device is reduced, and compared with a traditional grain drying device directly exhausting air, the device is more energy-saving and environment-friendly and meets the requirements of modern green agriculture for energy conservation and consumption reduction; the scraping ring is nested outside the air inlet pipe, and the bottom of the scraping ring is connected with the scraping rod, so that the function of removing dust attached to the outer surface of the air inlet pipe is realized; a detachable pipe bottom cover structure at the bottom of an exhaust pipe of the L-shaped box body is combined, so that the device can be quickly cleaned and maintained after running for a period of time, and the running stability and maintainability of the whole machine are improved.

The utility model relates to the technical field of grain drying machines, and discloses a barrel type grain drying machine which comprises a bearing frame, a servo motor, an outer drying barrel, a stirring rod and an inner drying barrel, the servo motor is fixedly arranged at one end of the top of the bearing frame, the outer drying barrel is fixedly arranged on the side, away from the servo motor, of the bearing frame, and the inner side of the outer drying barrel is hollow. The butt joint assembly arranged at one end of the stirring rod is matched with the connecting assembly arranged on the inner side of the inner drying cylinder, the inner drying cylinder and the outer drying cylinder of the device can be spliced, and the inner cylinder and the outer cylinder can be driven to rotate at the same time under the same power source; according to the variable-time-limit grain drying device, grain in the inner drying cylinder and in the middle of the inner drying cylinder and the outer drying cylinder can be stirred while rotating, so that the drying efficiency can be improved, meanwhile, the grain is screened through holes formed in the side wall of the inner cylinder, and the variable-time-limit screening function can be achieved while the drying function is achieved.