708 results about "Grain storage" patented technology

The invention relates to the field of grain storage management, and discloses an intelligent granary grain pile dew point early warning method and system, and the method comprises the steps: carrying out the continuous collection of the temperature and humidity, airflow velocity and pile density of each grain pile in a granary, and generating a humidity and heat perception graph reflecting the spatial layering characteristics; performing time sliding and spatial reconstruction analysis on the damp-heat perception graph, and constructing a damp-heat evolution mapping model; based on the damp and hot evolution mapping model, calling a multi-dimensional risk identification engine to perform aggregation judgment on the micro-region with the dew point close to a critical value, and outputting a potential condensation risk set; performing joint correction on the potential condensation risk set, real-time airflow distribution, grain pile accumulation form and ventilation response delay characteristics, and performing dynamic weight regression on different grain varieties and seasonal factors to generate dynamic stability indexes reflecting risk migration and diffusion trends; and adaptively adjusting the sensing sampling density and the early warning judgment threshold according to the dynamic stability index. The method has the advantage of improving the early warning precision of storage environment management.

The invention discloses a granary monitoring and early warning system based on a digital twin technology, and relates to the technical field of granary monitoring. The system comprises a server, a conduction analysis module and an early warning management module, through complete coverage of sensor data, a mechanism model, numerical simulation, three-dimensional visualization, risk quantification and intelligent response, landing, online acquisition, real-time simulation and dynamic early warning of digital twinning in grain storage management are truly realized, and blind areas and time delay of traditional manual and local sensing are solved.

The invention discloses a material level intelligent sensing and early warning system in the silo unloading process, and relates to the technical field of silo material level intelligent sensing. The method comprises the following steps: a data acquisition module used for acquiring a multi-modal data stream; the model construction module is used for constructing a normal unloading model based on the multi-modal data flow and a preset physical mechanism constraint; the state judgment module is used for extracting a current feature vector from the multi-modal data stream; comparing the current feature vector with a feature distribution range in a multi-dimensional feature space determined by a normal unloading model, and judging a current material flow state; according to the invention, material flow abnormal symptoms can be captured in time, early warning of the blocking risk is realized, the production rhythm is prevented from being disturbed by material flow interruption, the potential safety hazard caused by manual entering into the silo for troubleshooting is reduced, the grain loss and equipment damage risks caused by long-term retention and mildew of materials are reduced, and the storage safety and the operation stability of a grain storage system are guaranteed.

The invention relates to the technical field of leveling control, and particularly discloses a multi-machine cooperative efficient leveling system based on a robot group, which comprises initial three-dimensional grain surface map construction, dynamic task initial allocation and operation path planning. The bottleneck of single-machine operation is broken through in a multi-machine cooperation mode, dynamic task allocation and path planning enable the robot to accurately adapt to grain surface differences, intensive operation in a high convex area and efficient traversal in a flat area, and a fine leveling process is combined, so that the time consumed for leveling the granary is remarkably shortened, the efficiency is improved by several times compared with that of manual work, the operation period is greatly shortened, and the rapid operation requirement of a large-scale granary is met; high-precision point cloud acquisition of initial mapping, laser radar dynamic scanning in operation, IMU attitude stable control and error strict control of fine leveling links are realized, grain surface flatness is guaranteed in the whole process, highly convex areas are accurately identified and processed, obstacles are avoided, a foundation is built for subsequent links of grain storage, and the problems of low efficiency and long period of traditional leveling are solved.

The invention relates to the field of grain storage equipment, and discloses a grain depot belt conveyor fault sound and vibration feature extraction method based on time domain synchronous averaging, and the method comprises the following steps: S1, carrying out the multi-channel synchronous collection of sound and vibration signals in the operation process of a grain depot belt conveyor, and obtaining an original sound and vibration data set; s2, the original sound vibration data set is preprocessed, noise interference is removed, and data standardization is completed; and S3, constructing a time domain synchronous average model based on the belt conveyor operation period signal, performing synchronous average processing on the preprocessed sound vibration data, and extracting a periodic sound vibration component. By constructing a time domain synchronous average model based on an operation periodic signal, model parameters can be dynamically adjusted in combination with periodic characteristics of actual operation of a belt conveyor, and periodic fault sound and vibration components are specifically separated and extracted from sound and vibration signals of mixed aperiodic noise. Aperiodic interference factors such as grain flow noise and mechanical interference in the grain depot environment are effectively filtered out.

The invention relates to the field of grain storage mechanical equipment, in particular to a folding wing spiral cleaning machine which comprises a grain scraping machine and a walking chassis, the grain scraping machine is arranged on the walking chassis, the folding wing spiral cleaning machine further comprises a folding wing assembly, and the folding wing assembly is rotationally connected to the side face of the grain scraping machine and used for conveying materials to a feeding port of the grain scraping machine; the folding wing assembly and the grain scraper form a first use state and a second use state, and in the first use state, the folding wing assembly is perpendicular to the walking direction of the bin cleaning machine; in the second use state, the folding wing assembly is parallel to the walking direction of the clearance machine; in the idle state, the shell of the folding wing assembly is attached to the walking chassis and can flexibly penetrate through key passing areas such as a doorway and a channel, during material conveying, the driving motor is started to enable the driving wheel to drive the shell and a connecting structure of the shell to generate angle deflection, meanwhile, the driving motor drives the spiral blade to rotate through the driving shaft, and then grains are conveyed towards the grain scraper. The operation area of the whole machine can be greatly increased, and the original grain discharging effect can be achieved without frequent movement of the whole machine.

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 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 invention relates to the technical field of granary management, in particular to a granary multi-parameter collaborative sensing data management method and system. Comprising the steps of collecting upper-layer environment parameter data of an upper-layer area in a granary, core environment parameter data of a core area in the granary and external environment parameter data outside the granary; according to the external environment parameter data, the sudden drop situation of the external environment temperature is identified; calculating a humidity accumulation rising trend in the upper-layer environment parameter data and a temperature stability trend in the core environment parameter data; on the basis of the sudden drop situation, associating a humidity accumulation rising trend with a temperature stability trend, and judging a moisture migration risk; and generating moisture migration risk early warning information according to the moisture migration risk. The technical problem that when an existing granary data management method is used for processing complex and non-local moisture migration phenomena driven by external environment factors, multi-source data cannot be effectively associated, and consequently early warning is not timely is solved.

The invention discloses an intelligent monitoring method and device based on multi-modal information fusion, and the method comprises the steps: (1) collecting multi-modal data; (2) carrying out self-adaptive preprocessing on the microwave signal; (3) video image self-adaptive preprocessing; (4) multi-domain feature extraction; and (5) carrying out weighted fusion classification output. The method and the system are suitable for monitoring main grain storage pests such as maize weevil and grain beetles in the scenes of national grain depots and civil granaries, can realize real-time identification, positioning and counting of pests from the surface layer of a grain pile to the depth of 0.5 m, and solve the problems of insufficient performance of a single-mode sensor (vision, radar and acoustics) and poor adaptability of a multi-mode fusion environment in the prior art. The method adapts to intelligent transformation of the existing granary, and meets the requirements of high precision, full coverage and strong robustness of modern grain storage.

The invention discloses a granary insect pest multi-parameter monitoring linkage control system and method, and relates to the technical field of agricultural automation. The problems that an existing granary insect pest monitoring means is single in data collection, the insect pest trend cannot be accurately pre-judged, and a prevention and control strategy lacks pertinence and is difficult to remotely manage are solved. According to the invention, multi-dimensional data are collected and preprocessed in real time, accurate and comprehensive pest and environment data are ensured to be obtained, and the pest recognition accuracy is significantly improved through feature extraction; an intelligent analysis and prediction model can pre-judge the pest trend in advance, and a traditional passive prevention and control mode is changed; a graded early warning mechanism and a precise control strategy can intelligently deploy prevention and control resources according to insect pest grades, so that the use of chemicals is reduced, and the prevention and control cost is reduced; a remote interaction function breaks space limitation, and managers can conveniently master the granary condition in real time and remotely regulate and control the granary; the risk of grain loss caused by insect pests is effectively reduced, the grain storage safety and quality are improved, and the granary management efficiency is improved.

The present application relates to the technical field of grain storage monitoring, in particular to a kind of granary grain storage abnormal monitoring method, system, equipment and medium, method includes: obtaining the collection data of multidimensional sensor in granary, extracts the drift characteristic value of each sensor collection data current period;The absolute value of the drift characteristic value of each sensor collection data current period is compared with pre-set threshold value, establishes and includes abnormal sensor and the sensor group associated with abnormal sensor;Obtain the collection data or drift characteristic value of each type sensor in the same period in the sensor group, fuse multi-sensor data and carry out correlation analysis, distinguish environmental interference or real grain storage anomaly;According to the abnormal type of real grain storage anomaly, trigger hierarchical response.Determine abnormal sensor by comparing the absolute value of drift characteristic value, establish the sensor group associated therewith, consider the relevance of different abnormal types and other factors, it is helpful to more accurately carry out abnormal analysis.

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

The utility model relates to the technical field of binning machines, in particular to a special grain binning machine which comprises a supporting conveying frame, a belt conveyor, a mounting half gear, a driving motor, a driving shaft, a driving gear, a connecting frame, an adjusting motor, an adjusting shaft, an adjusting gear, a transmission shaft, a transmission half gear, a material guiding frame, a mounting assembly, a dust collection assembly, a driving assembly and a cleaning assembly. An adjusting motor is arranged above the connecting frame, an adjusting shaft is arranged at the output end of the adjusting motor, an adjusting gear is arranged at one end of the adjusting shaft, a transmission shaft is arranged on the bottom wall of the connecting frame, a transmission half gear is arranged on the side wall of the transmission shaft, and the transmission half gear is meshed with the adjusting gear; in the using process of the binning machine, the angle of the material guiding frame can be flexibly adjusted through the synergistic effect of the driving motor and the adjusting motor, so that grains are guided and conveyed in multiple directions and multiple angles through the material guiding frame, the problem that the grains are accumulated in a storage bin is effectively solved, and the binning efficiency and the grain storage uniformity are improved.

The invention provides a grain storage process of an airtight heat insulation type green grain storage container, and relates to the technical field of grain storage, the grain storage process comprises the following steps: S1, arranging an air film bin; the cover body is opened, the air film bin is laid in the box body, the grains are placed in the air film bin, and after the grains are placed, the air film bin is controlled to be closed; and S2, gas protection structure arrangement is conducted, specifically, the multiple airtight protection assemblies sequentially penetrate through the installation panel from one side, the airtight protection assemblies slide to the preset positions, and the airtight protection assemblies and the installation panel are controlled to be in a mutually-engaged sliding state. The air bags do not need to be pumped during preliminary installation, installation and arrangement of workers are facilitated, after the multiple airtight protection assemblies are arranged, the expanded air bags abut against one another to push the air bags and the positioning plates on the inner sides to slide to the preset positions, finally, a compact gas protection face is formed, simplicity and convenience are achieved, the overall arrangement time is shortened, and the working efficiency is improved. And the overall arrangement difficulty is greatly reduced.

The utility model relates to the technical field of granary mechanical ventilation, and discloses a granary ventilation corner cage which comprises a supporting frame connected with the granary wall face in an installed mode, a ventilation hood is arranged at the end, away from the granary wall face, of the supporting frame, and the ventilation hood is detachably connected with the supporting frame. A vertically-through airflow channel is formed between the ventilation hood and the supporting frame, ventilation holes communicated with the airflow channel are formed in the ventilation hood, and a sealing part is arranged on the portion, on the top of the airflow channel, of the supporting frame. According to the utility model, the problem of ventilation dead angles at four corners of a warehouse can be solved, the probability of mildew of grain piles at wall corners is reduced, and the safety of grain storage is improved.

Provided is a bird feeder, comprising a bird feeder main body (10), a camera assembly (18), a grain storage device (20), and a roof structure (30). The bird feeder main body (10) comprises a mounting base (12), a main body frame (14) fixedly connected to the mounting base (12), and a support frame (16); the camera assembly (18) is mounted in the main body frame (14) and is provided with a camera (180) used for taking a picture of an animal feeding region; the grain storage device (20) is used for providing food for feeding animals, and the grain storage device (20) is detachably connected to the main body frame (14) and staggered from the camera assembly (18); and the roof structure (30) covers the grain storage device (20) and is detachably connected to the support frame (16).

The invention belongs to environment monitoring equipment, and particularly relates to a granary anti-mildew intelligent monitoring system based on multi-environment parameter fusion, which comprises a decision-making layer, a communication layer and a control execution layer, and is characterized in that the system further comprises a hardware layer, and the hardware layer comprises a sensing module, a display module, a control module and a main control module; the main control module adopts an ESP8266 chip as a main controller, the sensing module adopts a gasScnsor methane sensor CH4, a carbon dioxide sensor CO2, a temperature and humidity sensor DHT11, a concentration sensor VOCS, a display module OLED, a control module ACSource and a display module OLED, and the above components are connected with each other to form the granary anti-mildew intelligent monitoring system, so that the deficiency of multi-physical-quantity coupling analysis of mildew in grain storage is solved, and the detection accuracy is improved. The problem of staticizing a control strategy is solved, data fusion of temperature, humidity and various gas parameters of grains in a granary is realized, intelligent linkage control with a ventilation system is realized, and grain loss and economic loss are reduced.

The application discloses a kind of coring tube dismounting device and grain detection device of grain storage warehouse, by setting first drive unit and second drive unit to drive jaw clamping or release coring tube and drive jaw rotation, and by lifting mechanism drive jaw rises or falls, and by positioning unit to respectively fix the coring tube located above and below, when positioning unit fixes two coring tubes, first drive unit can hold the coring tube located above, and by lifting mechanism the coring tube located above is moved to suitable height, in by second drive unit drives first coring tube rotation, to realize the butt joint and connection operation of two coring tubes. Similarly, the foregoing process is reversed to carry out, and the dismounting operation of two coring tubes can be realized. Not only reduce labor cost, and operation is simple, degree of automation is high, eliminates the security risk when manual butt joint or dismounting coring tube.

The utility model discloses an aluminum oxide grain size control device which comprises a fastening frame, side protection plates are installed on the two sides of the inner side of the fastening frame, an infrared emitter A is installed on one side of each side protection plate, a rectangular installation plate is installed at the upper position between the side protection plates, a feeding belt is installed on the inner side of the fastening frame, and an infrared emitter B is installed on the upper portion of the rectangular installation plate. An aluminum oxide crystal grain storage cavity is formed in the feeding belt, aluminum oxide crystal grains are placed on the aluminum oxide crystal grain storage cavity, a control box is installed on one side of the outer side of a fastening frame, a fastening plate is installed at the top of the fastening frame, and the two ends of the fastening plate are connected with the fastening frame through connecting blocks. And an infrared emission instrument B is mounted at the bottom of the fastening plate. The feeding belt is installed on the inner side of the aluminum oxide crystal grain detection device, the aluminum oxide crystal grain storage cavity is formed in the feeding belt, three aluminum oxide crystal grains can be placed in the aluminum oxide crystal grain storage cavity at the same time, and the detection efficiency is greatly improved by detecting the three aluminum oxide crystal grains.

This invention discloses a small-scale intelligent millet harvesting and sowing machine that solves the problems of low integration, insufficient targeting, complex operation, low efficiency, and poor terrain adaptability of existing millet harvesting machinery in hilly and mountainous areas. The invention includes an intelligent center and a vehicle body. A harvesting and material collection device, a transport and threshing device, a sowing device, and a fertilizing device are sequentially installed on the vehicle body. The inlet of the harvesting and material collection device corresponds to the inlet of the transport and threshing device. A non-destructive conveying device is connected to the outlet of the transport and threshing device, and the outlet of the non-destructive conveying device corresponds to a grain storage bin installed on the vehicle body. The grain storage bin is equipped with a grain mixing device. The sowing device is located between the harvesting and material collection device and the grain storage bin, and is equipped with a seed bin mixing device. This invention achieves unmanned and automated operation of the machinery, effectively ensuring the integration of field operations, and significantly reducing the input of human resources and the increased costs caused by frequent replacement of agricultural machinery.

The utility model relates to the technical field of pet supplies, in particular to a multifunctional pet interactive feeding device based on an intelligent control holder. Comprising a main body, a bottom shell is clamped to the bottom of the main body, a grain storage barrel is clamped to the top end of the main body, an electrode plate is arranged in the bottom of the bottom shell, and a second battery and a plurality of first batteries are installed on the electrode plate; a support is installed on the top of the bottom shell in the main body; a second motor is installed on the bottom shell in the main body; a first motor is installed on the top of the support, a microswitch is arranged on one side of the first motor, a rotating shaft is arranged at the output end of the first motor, a rotating support is installed on the top of the rotating shaft, and a panel assembly is arranged on the portion, below the camera front ball assembly, of the front side of the body. A bowl support is mounted at the bottom end of the front side of the main body; and a bowl is mounted on the bowl support. The utility model provides the intelligent feeding device which can realize omnibearing monitoring view angle, remote accurate control, active man-pet interaction and power-off endurance guarantee.

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 sampling pipe butt joint device and a grain storage bin grain detection device. The sampling pipe butt joint device comprises a base plate, a first positioning mechanism and a second positioning mechanism. The positioning holes are formed in the base plate, the first positioning mechanism and the second positioning mechanism are arranged on the two sides of the base plate, and the first positioning mechanism and the second positioning mechanism are used for positioning to-be-butted sampling pipes. Specifically, the first positioning mechanism can be located on the upper surface of the base plate, and the second positioning mechanism can be located on the lower surface of the base plate, so that the first positioning mechanism can be fixed to the lower end of the sampling pipe located on the upper portion, and the second positioning mechanism can be fixed to the upper end of the sampling pipe located on the lower portion. The problems that in the prior art, the fixing effect of the sampling pipes is poor, manual auxiliary butt joint is needed, the labor cost is increased, and the automation degree is low are solved.

The utility model relates to the field of agricultural instruments, in particular to an ex-warehouse loading transfer system. The grain storage device comprises a supporting frame body, a grain storage hopper, a fixing frame, two sets of steering bases, two sets of linkage mechanisms, a first spiral conveyor and a second spiral conveyor. The grain storage hopper is installed on the supporting frame body, the fixing frame is fixedly installed on one side of the grain storage hopper, the two sets of steering bases are located in the extending direction of one side of the grain storage hopper and movably installed on the fixing frame, and the two sets of linkage mechanisms correspond to the two sets of steering bases one to one. One end of the first screw conveyor is installed at the discharging end of the bottom of the grain storage hopper, the first screw conveyor is connected with one of the two linkage mechanisms, one end of the second screw conveyor is installed on the top face of the grain storage hopper, and the second screw conveyor is connected with the other linkage mechanism.

The application relates to a dual-mode cold storage refrigeration system and method for a grain depot, wherein a heat exchange pipe and a cold storage box are arranged in an evaporator, and an indoor air duct and a natural air duct are formed between the cold storage box and the heat exchange pipe; a photovoltaic power supply module comprises a photovoltaic panel and a power distribution cabinet; a compressor is connected with a condenser, the condenser is connected with a refrigeration branch and a cold storage branch respectively, one end of the heat exchange pipe is connected with the refrigeration branch, the other end of the heat exchange pipe is connected with an input end of the compressor, the cold storage branch is connected with the cold storage box, and a first working medium pump is connected with the compressor in parallel; a ventilation fan is connected with both ends of the natural air duct to form a natural air loop, and an air inlet and an air outlet of the ventilation fan are arranged outside the grain depot; an indoor unit is connected with both ends of the indoor air duct to form an indoor air loop, and an air inlet and an air outlet of the indoor unit are arranged inside the grain depot; a full-condition control module analyzes core data, and executes a natural cold source cold storage condition, a basic refrigeration and cold storage synchronous condition, a separate cold storage condition or a cold storage material cooling condition.

The utility model discloses a grain pile deep water retention cooling ventilation device, which comprises a fan, an air distribution box and a plurality of metal ventilation pipes, the fan is connected with an air inlet of the air distribution box, the air distribution box is provided with a plurality of air outlets, each air outlet is connected with one end of one metal ventilation pipe, and the other end of the metal ventilation pipe is connected with the fan. The other end of the metal ventilation pipe is arranged in a grain pile; when the deep sampler is used, the metal ventilation pipes are lowered to the bottom of a grain pile through the deep sampler, the upper ends of the metal ventilation pipes are connected to the air distribution boxes, each air distribution box can be connected with 5-6 metal ventilation pipes, and then a low-power fan is used for ventilation treatment, so that the deep ventilation cooling effect of the grain pile is achieved; therefore, the phenomenon of ventilation dead angles during ventilation and cold storage of the grain storage warehouse can be effectively solved through the metal ventilation pipe, and meanwhile the phenomenon that in order to reduce the phenomenon of local bottom layer heating, excessive loss of grain moisture is caused by using a centrifugal fan or a large amount of cost is generated by adopting a grain cooler can be avoided.

The utility model belongs to the technical field of grain storage equipment, and particularly relates to a structure of a low grain surface device below a squat silo. According to the structure of the low grain surface device under the squat silo, the pulley block hook is pre-buried on the inner side of the squat silo roof right above the overhanging grain inspection observation platform in the squat silo, and the reasonable arrangement of the fixed pulley block, the windlass winch, the steel wire rope and the hanging basket is combined, so that the low grain surface device under the squat silo can not be fully filled with grains, and the low grain surface device under the squat silo is convenient to use. The safety of grain inspection personnel is ensured, the operation from the ground to the low grain surface is convenient, and the market application prospect is wide; the device is compact in overall structure, convenient to operate, stable and reliable to use, capable of being manually operated in the whole process, free of hidden danger of powder explosion, capable of guaranteeing that feet of operators do not make direct contact with grain piles, capable of completely eradicating the risk that the grain piles collapse to bury the operators, low in installation and maintenance cost and easy to popularize.