753 results about "Stored grain" patented technology

The invention discloses a low-energy-consumption nitrogen-charging grain storage system and method, and relates to the field of nitrogen-charging grain storage. The method comprises the steps that compressed air is sequentially introduced into a filter set, a drying machine and a micro-oil adsorber to be purified and dried; stripping oxygen O2 molecules and water H2O molecules in the air by using a carbon molecular sieve pressure swing adsorption tower to obtain nitrogen N2 molecular gas; inputting nitrogen N2 molecular gas into a cold drying system, and cooling to a preset temperature range; detecting whether the concentration of the output nitrogen N2 molecular gas meets a preset concentration range or not by using an oxygen analyzer; and when the detected N2 molecular gas concentration of the nitrogen is lower than the lower limit of the preset concentration range, starting a circulating pump to suck the mixed gas in the closed warehouse to the carbon molecular sieve pressure swing adsorption tower for adsorption and nitrogen production again until the N2 molecular gas concentration of the output nitrogen meets the preset concentration range. Aiming at the problem that the nitrogen concentration in nitrogen-filled grain storage is difficult to accurately control in the prior art, accurate control of the nitrogen concentration and yield is realized.

The invention discloses a granary design method and device based on a three-dimensional model, equipment and a storage medium, and the design method comprises the steps: obtaining the original feature information of a target granary, carrying out the preprocessing of the original feature information, and obtaining the feature information after preprocessing; based on the preprocessed feature information, generating a three-dimensional model of the target granary by using a building information model technology; obtaining a target granary design model matched with the three-dimensional model from a pre-stored model database; performing a simulation test on the target granary design model to obtain a simulation test result at least including grain storage safety, full life cycle cost and extreme working condition adaptability; and judging the simulation test result according to a preset judgment standard. According to the method, multiple technologies are fused, granary design data are accurately collected, three-dimensional modeling, simulation evaluation and scheme optimization are realized through intelligent algorithm processing, the grain storage safety can be greatly improved, the cost is reduced, and the design efficiency and quality are improved.

The invention relates to the technical field of silo grain storage engineering, and particularly discloses a construction process of a conical silo top of a large-diameter squat silo, which comprises the following steps: step 1, lifting a steel truss to a height not lower than the mounting position of a bracket, and then fixedly mounting the bracket on an embedded threaded pipe on a silo wall; secondly, a supporting plate of the bracket is fixedly connected with a stress plate fixed to the radiation beam through a bolt; wherein a plurality of mounting holes are formed in the supporting plate of the bracket, a plurality of matching holes are formed in the stress plate, fixed connection is achieved by inserting bolts into the mounting holes and the matching holes, and the mounting holes and / or the lap joint holes are adjusting holes. And thirdly, formworks are installed on the steel trusses, steel bars are bundled, then the silo top is poured, and during pouring, according to the principle of first bottom and then top, the lower ring beam connected with the silo wall is poured firstly, then the conical shell is poured, and finally the center of the silo top is poured. The scheme is used for solving the problems that disassembly is time-consuming and secondary utilization is affected due to welding of the steel truss and the bracket at present.

The invention relates to the technical field of grain depot ventilation prediction, and discloses a grain storage ventilation decision-making method based on GNN and Cross-Attention, and the method comprises the steps: collecting internal temperature and humidity data of a grain depot, external temperature and humidity data of the grain depot, weather data and grain pile temperature data in real time; and the collected grain pile temperature data and weather data are preprocessed respectively, the grain balance relative humidity, the atmosphere dew point temperature and the grain dew point temperature are calculated and serve as input of a pre-trained ventilation decision model, and a classification result of ventilation decisions is obtained. Based on the temperature and humidity information of the air in the grain depot, the ventilation of the grain depot is comprehensively decided by combining the external temperature and humidity of the grain depot, the dew point data, the weather data and other information, the temperature characteristics of the grain depot are more accurately extracted, and the ventilation decision of the grain depot is more reliable.

The invention discloses a grain condition data prediction method and device, and relates to the technical field of grain, and the method comprises the steps: carrying out the data cleaning processing of original grain condition data, so as to generate a grain condition data optimal attribute set; training the grain condition data optimal attribute set through a radial basis function (RBF) neural network to generate a grain condition data prediction model; and outputting predicted grain condition data within a specified time step length through the grain condition prediction optimal attribute set and the grain condition data prediction model, and performing early warning according to a comparison result of the predicted grain condition data and a preset safe grain storage critical value. According to the invention, the future development or change trend of the grain condition is predicted through the multi-type grain condition data, so that early warning is carried out on the possible dangerous grain condition to ensure the grain storage safety.

An intelligent grain storage control system based on a wireless sensor network comprises a grain storage environment monitoring subsystem which comprises a plurality of sensor arrays used for monitoring at least one grain storage environment parameter; the grain condition early warning subsystem is used for processing all the grain storage environment parameters by using a deep belief network and a long-short term memory network to obtain a real-time grain condition state; the intelligent control subsystem is used for generating an equipment control instruction according to the real-time grain condition state; and the overrun execution subsystem comprises a plurality of environment control devices, and the environment control devices are used for operating according to the device control instructions to change the environment of the grain depot. According to the invention, the grain storage environment parameters in the grain depot can be more flexibly collected, and the real-time grain condition state is predicted through the grain condition early warning model comprising the deep belief network and the long-short term memory network based on the grain storage environment parameters, so that the grain depot environment can be controlled with high precision, and full protection of grains is realized.

The intelligent fumigation warehouse inspection robot comprises a propelling frame, a bottom frame and a releasing frame which are connected in sequence, a medicament outer box is installed in the middle of the upper surface of the bottom frame, and a control panel is embedded outside the medicament outer box; the intelligent fumigation in the granary is jointly realized by taking a measure of combining continuous medicament loading and fixed-point medicament distribution, and targeted and accurate medicament application is performed through intermittent release and fixed-point medicament distribution after medicament loading, so that the fumigation effect in the granary is unified; in combination with parameter measurement of a gas fumigation comprehensive value and a pesticide application point position distribution value, the distribution condition of fumigation point positions and the distribution condition of the pesticide amount in the current granary are judged according to a granary patrol fumigation coefficient, and the distribution positions of the fumigation point positions and accurate infusion of the pesticide amount are correspondingly controlled; the problems that due to season change and grain condition parameter change, the concentration of phosphine gas in a granary is not uniform, and pesticide application accuracy is limited are solved, and grain storage safety is greatly guaranteed.

The invention relates to the technical field of grain and fertilizer transportation, in particular to a fertilizer and grain transfer vehicle which comprises a vehicle head, a vehicle body and a compartment with a compartment cover at the top, the middle of the compartment is divided into a grain storage bin and a fertilizer storage bin through a partition plate capable of transversely moving, and grain and fertilizer can be stored at the same time when the partition plate moves to the middle. When moving to the rightmost / leftmost end, switching to a pure grain / fertilizer storage mode; a ventilating shutter fan is arranged at the top of the grain storage bin, sealing folding cloth is arranged at the top of the fertilizer storage bin, the grain storage bin and the fertilizer storage bin are opened and closed in a linkage mode along with movement of the partition plate, the compartment is divided into the grain storage bin and the fertilizer storage bin through the transversely-movable partition plate, and the space proportion of the grain storage bin and the fertilizer storage bin can be freely adjusted when the partition plate moves. When the partition plate is located in the middle, grains and fertilizer can be stored at the same time; the pure grain storage mode is switched when the vehicle moves to the rightmost end, and the pure fertilizer storage mode is switched when the vehicle moves to the leftmost end, so that the capacity requirements on two types of goods in different transportation scenes are met, space waste caused by single goods transportation is avoided, and the universality and the transportation efficiency of the vehicle are remarkably improved.

The utility model belongs to the technical field of pet supplies, and discloses a pet feeder. The pet feeder comprises a food storage barrel, a food discharging mechanism and a vacuumizing assembly. The grain storage barrel can communicate with the atmosphere, a first grain outlet is formed in the bottom end of the grain storage barrel, and a grain distribution assembly is rotationally arranged in the grain storage barrel. The grain discharging mechanism is arranged below the grain storage barrel and comprises a bearing table and a grain discharging assembly, the bearing table can ascend and descend, the grain discharging assembly comprises a grain discharging channel and a blocking piece, the axis of the feeding end of the grain discharging channel and the axis of the blocking piece are located on the same straight line, and the grain discharging assembly can be rotationally switched between a first position and a second position; and when the blocking piece is located at the second position, the grain outlet channel is opposite to the first grain outlet, and the blocking piece can block the first grain outlet. The vacuumizing assembly is arranged on the grain storage barrel and can evacuate air in the grain storage barrel. The pet feeder can store pet food in a sealed mode, and the risk that the pet food goes bad is avoided.

A trapper for stored grain pests in a grain pile belongs to the technical field of stored grain pest trapping and comprises a trapper mounting seat, a trapper main body pest trapping tube, a trapper camera module and a trapper bottom pest collecting conical head. The trapper mounting seat, the trapper main body insect trapping tube, the trapper camera module and the trapper bottom insect collecting conical head are sequentially connected from top to bottom; insect trapping holes for pests to pass through are formed in the cylinder wall of the upper end of an insect trapping pipe of the trap body, an attractant containing bottle and a bottle cap are arranged in the lower end of the trap body, emission holes are formed in the bottle cap, and a miniature electronic liquid level meter is arranged in the attractant containing bottle. The insect trapping device is simple in structure and easy and convenient to operate, attractants can be added to improve the insect trapping rate, the residual quantity of the attractants can be pre-warned, the inner insect trapping condition can be observed in real time, meanwhile, the insect trapping device is convenient to install and use, functions are convenient to expand and upgrade, and the insect trapping device is suitable for industrial production and application.

The invention relates to the technical field of grain storage ventilation control, discloses an air volume dynamic adjusting method and device of a grain storage ventilation system, and aims at solving the problem that an existing grain storage ventilation control mode is poor in accuracy. Comprising grain layer average temperature gradient, average grain temperature, average grain temperature difference between an air inlet layer and an exhaust layer, grain pile balance desorption absolute humidity under instant grain temperature and instant atmospheric absolute humidity; the state index of each grain pile partition is calculated in real time, the corresponding target ventilation quantity is determined, and the corresponding air valve is dynamically adjusted to the target opening degree corresponding to the target ventilation quantity; and when the grain pile partition is ventilated according to the target opening degree, the ventilation wind speed is calculated in real time, the moisture evaporation rate of the grain pile partition is calculated in real time based on a Penman-Monteith equation, and the target ventilation quantity is dynamically corrected according to the moisture evaporation rate. The accuracy of grain storage ventilation control is improved, and the method is particularly suitable for granaries in complex climate areas.

The invention relates to a reinforcement learning-based granary ventilation energy consumption optimization system and method, in particular to the field of granary ventilation energy consumption optimization, and can effectively improve the intelligent level of granary ventilation control by setting a data acquisition and fusion module, a state space construction module, a reinforcement learning training module and a real-time decision and feedback module. Accurate perception and decision-making of a dynamic environment are realized through cooperative work of multiple modules, the system adaptively optimizes a ventilation strategy by using a reinforcement learning technology, energy consumption is remarkably reduced, meanwhile, it is ensured that the temperature and humidity in a granary are stabilized in a safe range, the grain mildew or qualitative change risk is avoided, and the system has high practicability. The online learning ability of the method can continuously adapt to external weather changes and grain condition dynamic states, closed-loop optimization is formed, and finally energy consumption minimization is achieved on the premise that grain storage safety is guaranteed.

The invention relates to the technical field of agricultural equipment, in particular to a corn ear and stalk collecting, packaging and film winding all-in-one machine which comprises a frame, a material collecting module and a recycling module are arranged on the frame, the material collecting module comprises a harvesting table, a cab and a grain storage box, and a stalk chopper is installed on the lower portion of the harvesting table; a stalk chopper is arranged on one side of the grain storage box, a stalk crusher connected with the stalk chopper is arranged on one side of the grain storage box, the recycling module comprises a stalk storage box and a packaging machine, a first conveying belt connected with the stalk storage box is arranged at the feeding end of the packaging machine, and a film winding device is arranged at the discharging end of the packaging machine. Compared with a traditional stalk and spike harvesting device, through modular design, stalk cutting, spike and grain separation, straw smashing and packaging and film winding integrated operation is achieved, device switching and manual intervention are reduced, and the straw mildewing risk caused by human errors is reduced.

The utility model discloses a cross-seasonal and night composite cold storage air conditioning system based on low-temperature grain storage, which comprises a night cold storage system, a cooling capacity pickup heat exchanger, a cold release heat exchanger, a gas-liquid separator, a gas recovery tank and the like. By adjusting the on-off states of electromagnetic valves of the cooling capacity picking heat exchanger and the cooling capacity preparing heat exchanger, the distribution between cold storage by utilizing the environment temperature and cold storage by preparing the cooling capacity at night is realized; according to the principle that cold in winter and used in summer, cold storage is conducted in winter, cold release is conducted in a granary in summer, and when the cold storage capacity is insufficient, night cold storage is started to supplement the cold storage capacity, so that the cold storage capacity is stably supplied, the operation stability of the system is guaranteed, and meanwhile the equipment capacity and the initial investment of the cold storage system are reduced.

The present invention relates to the technical field of elevators, and more specifically, to a grain elevator based on modern agricultural machinery and equipment, comprising a base, an elevator structure, a drive structure, a feeding structure, a rotating structure, and an opening and closing structure. The setting of the feeding structure avoids the blockage problem caused by excessive accumulation of grain at the elevator feed port, making the grain distribution more uniform, while facilitating operators to add grain to the equipment and improving flexibility. The setting of the rotating structure facilitates rapid adjustment of the direction of the discharge pipe on the elevator, thereby facilitating the delivery of grain to grain storage tanks in different directions, avoiding the adjustment of the overall direction of the elevator and improving operational efficiency. The setting of the opening and closing structure can flexibly adjust the valve opening according to production needs, accurately control the discharge flow of materials such as grain, and quickly cut off the discharge, with strong flexibility.

The utility model relates to the technical field of granary grain storage, and discloses an intelligent temperature control and ventilation integrated device for a granary, which is used on the granary for storing grain piles, an air return duct is arranged on the granary, the air return duct is communicated with the space above the grain piles in the granary, a ventilation ground cage is arranged at the bottom of the granary, and a special air conditioning unit and a return air switching box are arranged outside the granary. An air outlet switching box is arranged in the granary, an air return opening of the special air conditioning unit is communicated with the air return duct or the external atmospheric environment through the air return switching box, an air outlet of the special air conditioning unit is communicated with the air outlet switching box, the air outlet switching box is communicated with the ventilation ground cage or the space above a grain pile in the granary, and the air return duct is higher than the air outlet switching box. The air duct connected with the special air conditioning unit is optimized, the three functions of grain surface temperature control in summer, grain pile cooling in summer and mechanical ventilation in winter can be achieved by switching the communication trend of the air duct, and the effect that one set of equipment has multiple working modes is achieved.

The utility model discloses a vacuum fish food feeder which comprises a shell assembly, a food storage bin, a movable bin, a movable support and an eccentric wheel driving mechanism, the food storage bin is arranged at the top of the shell assembly, and a food outlet is formed in the bottom of the food storage bin. The movable bin is movably arranged in the shell assembly and below the grain storage bin, the movable bin is provided with a grain storage cavity on the front side and a blocking part on the rear side, an opening is formed in the bottom of the grain storage cavity, and a turning plate used for opening or closing the opening is arranged at the opening. The eccentric wheel driving mechanism and the movable support are both arranged in the shell assembly, the eccentric wheel driving mechanism is connected with the movable bin through the movable support, and the eccentric wheel driving mechanism drives the movable bin to move through the movable support. The grain storage cavity is opposite to the grain outlet or the blocking part closes the grain outlet, and the grain storage device is simple in structure and more reliable in performance.

The invention relates to the field of grain storage and transportation, in particular to a whole-process complete-set grain storage and transportation method and system. The method comprises the following steps: obtaining information of types, quality and weight of grains to be warehoused; the warehousing process and equipment parameters of the to-be-warehoused grains are adjusted; carrying out grading and impurity removal treatment on the to-be-warehoused grains; the humidity of the to-be-stored grains is regulated and controlled; executing a grain warehousing process; the storage environment and the stored grains are continuously monitored; storage environment parameters are adjusted; and by constructing a deep learning ex-warehouse unit planning model and a transportation path planning model, an optimal ex-warehouse unit and an optimal transportation path are planned. According to the invention, through an intelligent adjustment mechanism, the storage process and equipment parameters are optimally configured; an optimal monitoring regulation and control technology is adopted, so that the optimal storage environment is ensured, and the grain quality is guaranteed; by constructing a deep learning warehouse-out unit planning model and a transportation path planning model, the loss of grains and equipment is effectively reduced, and the whole-process complete-set efficient storage and transportation of the grains is realized.

The present invention discloses an intelligent linkage low-temperature grain storage multi-functional ventilation system and its ventilation method, which includes a ventilation pipe network, a main controller, and several refrigeration and air-conditioning units, temperature sensors, etc. connected to the main controller. The ventilation pipe network includes an upper-layer annular ventilation duct, a bottom-of-bunker ventilation floor grille, a vertical ventilation duct along the corner of the bunker wall, etc. Among them, the upper-layer annular ventilation duct is installed parallel to the ground below the grain loading line on the side wall of the granary; the bottom-of-bunker ventilation floor grille includes a lower-layer annular ventilation floor grille and a semi-circular cross-section ventilation floor grille arranged in a "mountain" shape; the vertical ventilation duct along the corner of the bunker wall has an isosceles triangle cross-section, one group of which is connected to the upper-layer annular air duct, and the other group is connected to the lower-layer annular floor grille. A closed air valve is provided on each branch air duct, and the opening and closing are controlled by the main controller according to the requirements of different grain storage temperature control working conditions; the present invention can systematically solve the problem of grain storage loss caused by reasons such as "local heating", "blind ventilation", and "cold core and hot skin" during storage.

The invention discloses a mesh bag hoisting and unloading type rice straw integrated combined harvesting device and a harvesting method, and belongs to the technical field of rice straw integrated harvesting equipment. Comprising a harvester body composed of a crawler-type walking chassis, a driving control position, a harvesting component, an inclined conveying device, a threshing component, a threshing device, a separating device, a cleaning device, a residue processing device, a straw walker, a grain elevator, an engine, a transmission system, a hydraulic system and an electrical system. A threshing component is arranged in the middle of a chassis frame on the harvester body, and a lifting and unloading type mesh bag grain storage component is arranged on the right side of the harvester body. The whole-feeding type crawler belt combine harvester technology widely used in southern rice areas at present is introduced, part of complete mechanism components are applied, the technology and the manufacturing process are mature, and the quality is reliable. A grain tank and a grain unloading barrel are removed, and a grain storage mesh bag, a grass storage mesh bag, a straw guide component and an ensiling agent adding component are added, so that the manufacturing cost is lower.

A trapper for stored grain pests in a grain pile belongs to the technical field of stored grain pest trapping and comprises a trapper mounting seat, a trapper main body pest trapping tube, a trapper camera module and a trapper bottom pest collecting conical head which are sequentially connected from top to bottom. Insect trapping holes for pests to pass through are formed in the cylinder wall of the upper end of an insect trapping pipe of the trap body, an attractant containing bottle and a bottle cap are arranged in the lower end of the trap body, emission holes are formed in the bottle cap, and a miniature electronic liquid level meter is arranged in the attractant containing bottle. The device is simple in structure and easy and convenient to operate, attractants can be added to improve the pest trapping rate, the residual quantity of the attractants can be early warned, the internal pest trapping condition can be observed in real time, meanwhile, installation and use are convenient, function expansion and upgrading are convenient, and the device is suitable for industrial production and application.

The utility model discloses a grain storage system applying chlorine dioxide, which comprises a granary, a first gas dispersion mechanism, a second gas dispersion mechanism, a circulation pipeline and a chlorine dioxide generator, the first gas dispersion mechanism comprises a main gas pipe and a plurality of gas dispersers, the main gas pipe is arranged at the top in the granary, one end of each gas disperser is connected with the main gas pipe, and the other end of each gas disperser is connected with the circulation pipeline. An air outlet pipe is arranged at the other end; the second gas dispersion mechanism comprises a conveying pipeline and a plurality of dispersion pipelines, the conveying pipeline is arranged at the bottom in the granary and distributed along the inner circumferential wall of the granary, the dispersion pipelines are arranged at the bottom in the granary, the conveying pipeline is arranged around the dispersion pipelines, the two ends of the dispersion pipelines communicate with the conveying pipeline, and the dispersion pipelines are provided with a plurality of gas outlet ports; one end of the circulation pipeline communicates with the main air pipe, the other end of the circulation pipeline communicates with the conveying pipeline, and the circulation pipeline is provided with a circulation fan. The grain storage system applying chlorine dioxide provided by the embodiment of the utility model can improve the gas diffusion efficiency.

1. The name of the design product: storage barrel (9109). 2. The use of the design product: the design product is used for storing grains in the storage barrel. 3. The design points of the design product: the combination of shape and pattern. 4. The picture or photo that best indicates the design points: perspective view 1.

The invention provides a grain storage transaction background push information processing method and system based on big data, and belongs to the technical field of information push, and the method comprises the steps: carrying out the calculation based on a first weight corresponding to the first historical data of a first user, and obtaining a first evaluation value of the first user; performing grade evaluation on the first user based on the first evaluation value to obtain a first grade corresponding to the first user; and pushing information to the first user based on a pushing strategy corresponding to the first level. According to the big data-based grain storage transaction background push information processing method and system provided by the invention, the user experience can be improved.

The invention relates to the field of pet supplies, solves the problems that when an existing feeder and an existing water feeder are separated, use is inconvenient, and the production cost is high, and provides a pet feeding and water drinking all-in-one machine which comprises the feeder, a water fountain and a controller. The feeder is electrically connected and / or detachably and physically connected with the water dispenser; the feeder comprises a driving device, a food distributor and a residual food amount detection device, the driving device is connected with the food distributor, and the food distributor and the residual food amount detection device are arranged in a food storage area of the feeder; the water fountain comprises a water pump, a filtering part and a water level detection device, the water pump and the water level detection device are arranged in a water storage area of the water fountain, and the filtering part is arranged on a water flow path between the water storage area and a water containing area. According to the pet feeding and drinking all-in-one machine provided by the invention, the feeder and the water dispenser can be conveniently disassembled and assembled, so that the equipment can integrate feeding and water feeding functions.

The utility model discloses a negative-pressure transverse ventilation system for an underground horizontal warehouse granary. The negative-pressure transverse ventilation system comprises a vertical air supply pipe, a vertical air return pipe, a horizontal main air supply pipe, a horizontal main air return pipe, a fan box and a controller, and a grain storage part is arranged between the vertical air supply pipe and the vertical air return pipe. According to the system, cold air flowing out of the vertical air supply pipe penetrates through gaps among grains to reach the vertical air return pipe, so that a ground ventilation ground cage is replaced. According to the system, mechanical grain storage of the granary is facilitated, the labor workload and the refrigeration workload are reduced, the ventilation energy consumption is reduced, uniform cooling of grains is ensured, and the temperature of the core of a grain pile is effectively reduced.

The utility model relates to the technical field of grain storage, in particular to a household grain storage device which comprises a rice bucket body and a top cover assembly which are in butt joint in an up-down matched mode, a plurality of detachable bottom cushion blocks are arranged at the lower end of the rice bucket body, and a detachable partition plate is arranged at the bottom end in the rice bucket body. The middle of the top cover assembly is fixedly connected with a dehumidification assembly, a main body of the dehumidification assembly extends into the rice bucket main body and is in butt joint with the partition plate in a matched mode, the upper end of the dehumidification assembly is communicated with the outside, and a humidity sensor is arranged at the lower end of the dehumidification assembly. The inner cavity is dehumidified through operation of the dehumidification assembly, compared with an existing storage container, grain can be prevented from being affected with damp and going mouldy, and a filler used for preventing insects can be placed in the dehumidification assembly and used for preventing the grains from growing insects, so that grain waste caused by grain insect growing is effectively avoided.

The utility model provides a grain storage pipeline system of a grain blocking door of a squat silo. The grain storage pipeline system comprises a gas main pipeline, a circulation fan, a circulation pipeline and a nitrogen pipeline, and a PLC (Programmable Logic Controller) control unit is electrically connected with a temperature sensor, a humidity sensor, a nitrogen concentration sensor, a phosphine gas detector, the circulation fan, a first electric valve and a second electric valve respectively. When the temperature sensor and the humidity sensor detect that the temperature and the humidity of the grain blocking door are too high, high-temperature and high-humidity gas is exhausted out of the squat silo through the circulating fan; when the nitrogen concentration sensor detects that the nitrogen concentration of the grain blocking door is too low, the nitrogen concentration in the squat silo is discharged out of the squat silo through the gas main pipeline, and then the nitrogen is supplemented into the squat silo again through the nitrogen pipeline; in the fumigation period of the warehouse, when the phosphine gas detector detects that the concentration of the phosphine gas at the grain blocking door is too low, the low-concentration phosphine gas is pumped out through the circulation fan and led to the grain pile through the circulation pipeline, and the high-concentration phosphine gas in the grain pile flows back to the grain blocking door.

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 grain storage barrel comprises a barrel body with an opening in the top, a partition plate and an inner partition bin are movably inserted into the barrel body, the interior of the barrel body is divided into a left storage space and a right storage space by the partition plate in the vertical direction, and the inner partition bin is arranged in the barrel body. The inner partition bin is selectively inserted into the upper area of the storage space and is provided with a storage cavity with an opening in the upper end. According to the grain storage barrel, food can be stored in a classified mode, the storage cavities of the inner partition bins can independently store the food and can be isolated from the food in the storage space, and mutual doping or pollution is avoided; the partition plate and the inner partition bin can be selected and matched according to user requirements, and various use requirements are met.