As we all know, the use of new blower is very wide, such as environmental protection water treatment, folding machine, indentation machine, paper cutter, glass products, air transport and so on. Today, I would like to introduce the feasibility of using new blower to ventilate and cool soybean in winter and to deal with local heating.
The storage experience in recent years shows that the ventilation uniformity of soybean in winter is generally lower than that of wheat and maize. Especially when soybean is stored in shallow silos, there are obvious regional differences in the range and speed of cooling. Usually, the central blanking point (in the range of 3 m in diameter), not only the ventilation cooling rate is slow, but also the uniformity of cooling, the range of cooling, the temperature and moisture gradient after ventilation cooling are obviously lower than those in other areas. The above parts are the key parts which cause local heating in summer. The ventilation and cooling effect of these parts is directly related to the safety of whole storage soybean in summer. Therefore, exploring an effective ventilation mode has become a major problem in soybean storage. For this reason, combined with the storage characteristics of soybeans, the central grain reserve directly under Xinshagang, Guangdong Province, tried to use 15KW new blower for comprehensive cooling treatment, and achieved remarkable results, which laid a low-temperature foundation for the safety of soybeans in summer and long-term storage.
Materials and methods
1. Test warehouse
In this experiment, 48 silos were selected as test silos and 41 silos as control silos. They were all shallow silos constructed by the national debt project of 50 billion kg in 1998. The diameter of the silos was 25.0m, the height of grain stocks was 15.6m, and the designed storage capacity was 6500t.
2. Test equipment
15 kW High Pressure Centrifugal fan, 11 kw medium pressure centrifugal fan, local single-pipe ventilation unit, ventilation hose, grain condition detection system, etc.