How to configure the dryer:
1. First, determine the two important indicators of the productivity and precipitation amplitude of the dryer, and conduct scientific demonstration according to the actual situation in the local area.
If 3,000 tons of wheat are dried within 15 days, the moisture content of 22% wheat is reduced to 14% safe moisture. If the dryer is to work for 29 hours a day, a medium-sized dryer with an hourly throughput of 10 tons should be used. If the water is reduced by 5% per hour, the drying capacity is 16 tons per hour. However, if the 3,000 tons of corn with a water content of 26% and the ambient temperature is -5 ° C on average, the corn can be stored for about 15 days. Working 20 hours a day, 30 days to finish, to 14% of safe moisture, you can use a small dryer with an hourly capacity of 5 tons. When the conversion is reduced to 5%, the drying capacity is 12 tons per hour.
2. If the grain production is concentrated in the production area and the grain processing capacity is large during the drying season, a large, high temperature, high efficiency and quick dryer can be selected according to the actual situation. The equipment of the optional dryer dryer should not be small, because in most cases, when the harvest season meets the rainy season, it is necessary to play the drying mechanism. The large amount of drying demand and the small machine productivity cannot solve the problem. National and local reserve stocks and grain-producing production areas should have large and medium-sized dryers.
3. The service radius of the fixed dryer should be small and not large, so as to reduce the transportation distance, reduce the cost and improve the efficiency.
4. The mobile dryer can be used in rural areas where grain production is not concentrated and in small grain production areas in the south. The productivity per hour is generally 2 to 5 tons. It is best to use more than one machine, not only for food crops, but also for some cash crops. The service should be larger in radius to function as a mobile dryer.
5, the dryer must be equipped with some auxiliary equipment to complete the drying operation. The degree of mechanization is high, the automatic control is reliable, and the labor intensity of workers is greatly reduced.
6. The continuous dryer should be equipped with upper and lower levelers in the grain storage section. The temporary storage bin in the process shall be equipped with a full bin positioner, and the hoist shall have automatic shutdown and blockage alarm device. With the leveler, when the dryer is full of grain, the upper leveler works, and the elevator will automatically stop feeding. When the grain in the machine is reduced to the lower level, the hoist automatically works, and supplies the grain to the dryer, so that the dryer is always kept full of grain. The grain-discharging organization should be able to achieve adjustment or infinitely variable speed. Temperature control is the key to ensuring food quality. Temperature control instruments should be able to display hot air temperature and grain temperature in each section. Temperature display must be accurate and high temperature alarm.
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