After the warehouses of the 15th and 16th warehouses with the same warehouse storage, grain storage and storage time, 4 axial fans with a power of 0.75kW and 4 centrifugal fans with a power of 11kW were used for ventilation cooling. The 16th warehouse was in compliance. T1-t28e; ventilation is cooled when the humidity meets 60% and 70%. From the cooling rate of cooling, cooling time, water loss, electricity consumption, etc., there are certain differences in the working time of different fans, controlling the number of fumigation, reducing the pollution of the drug to the food fumigation, and adopting different fumigation according to the variety and period. Measures to use the pharmacy reasonably. For foods that can be kept at low doses, try not to fumigation.
After the new grain is put into the warehouse, a thorough fumigation should be carried out. Before the fumigation, the hole should be checked to ensure the half-life reaches 40s. The fumigation should be carried out by using the whole warehouse circulation or sub-film circulation fumigation, and the PH3 concentration should be detected in time. After sealing for 20 days, it can be ventilated. Disperse gas. After storing the grain for a period of time, try to reduce the dosage of the drug. During the grain storage period, the time of the medicine in the chemical storage should be pushed back as much as possible to reduce the number of dosing.
Scientific use of machinery to reduce the cost of warehousing and quick freezing. In the process of rotation, the horizontal conveying mode can be flexibly used. A horizontal conveyor with a power of 2kW and an efficiency of 50t/h can replace the 4kW conveyor to achieve normal rotation. According to the calculation of a medium grain storage capacity of 100000t, it can save 4000kWh of electric energy.
Using axial fan ventilation to cool down, laying a good foundation for ventilation and cooling in winter. Although the cooling rate of centrifugal fan is large, the total cost is lower when the grain temperature is lowered to a similar level. The unit energy consumption is larger than that of the axial fan. . When cooling and retaining water, try to choose axial flow fan for ventilation and cooling, which can save energy, save cost of grain storage, reduce storage cost and reduce grain moisture loss.
Scientific fumigation, improve the fumigation-free rate with the improvement of the quality and storage conditions of the grain storage. At present, the fumigation rate of the grain storage in our warehouse is basically controlled at about 40%, and the dose and PH3 emissions are significantly reduced, which reduces the pollution to the environment. Achieved better economic and social benefits.
The scientific and efficient in-and-out cleaning system not only effectively reduces dust pollution, but also reduces the cost of ton grain storage. The thermal insulation renovation of the warehouse has kept the stored grain at a very low temperature, which not only maintains the quality of the stored grain, but also effectively reduces the probability of occurrence of the mold, and lays a good foundation for avoiding condensation and reducing ventilation costs in winter ventilation. basis. The axial flow fan is ventilated and cooled relative to the centrifugal fan, which can save energy, save the cost of grain storage, reduce the cost of grain storage, and reduce the loss of grain moisture.
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