What to pay attention to when choosing a dryer

1. The equipment of the dryer should be large or small because in most cases, the drying mechanism needs to be brought into play when the harvest season meets the rainy season. Large drying requirements and small machine productivity cannot solve the problem. Large and medium-sized dryers should be provided in the national and local reserves and food production areas.

2. The service radius of the fixed dryer should be small or large, so as to reduce the transportation distance, reduce the cost and improve efficiency.

3. The mobile dryer can be used in rural areas where grain production is not concentrated and small grain production areas in the south. Productivity is generally 2 to 5 tons per hour. It is best to use one machine for multiple purposes, not only for food crops but also for some cash crops. The service radius should be larger in order to play the role of the mobile dryer.

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4. To configure the dryer, we must first determine the two important indicators of the dryer's productivity and precipitation range, and make a scientific demonstration based on the actual local conditions. For example, drying 3,000 tons of wheat in 15 days will reduce wheat with a moisture content of 22% to a safe moisture content of 14%. If the dryer works 29 hours a day, a medium-sized dryer with a capacity of 10 tons per hour should be selected. Calculated by reducing the moisture content by 5% per hour, the drying capacity can be 16 tons per hour. However, if the 3,000 tons of corn has a moisture content of 26%, the corn can be stored for about 15 days at an average ambient temperature of -5 ° C. According to the work of 20 hours a day, 30 days of drying, reduced to 14% of the safe moisture, you can choose a small dryer with a processing capacity of 5 tons per hour. When converted to reduce 5% moisture, its drying capacity can be 12 tons per hour.

5. If the production area where the grain production is concentrated, the amount of grain processed during the drying season is large, you can choose a large, high temperature, efficient and fast dryer according to the actual situation. To complete the drying operation, the dryer must be equipped with some auxiliary equipment. The degree of mechanization is high, the automatic control is reliable, and the labor intensity of workers will be greatly reduced. The continuous dryer should be equipped with upper and lower level devices in the grain storage section. The temporary storage bin in the process should be equipped with full bin levelers, and the elevator should have automatic shutdown and block alarm devices. With the material level device, when the dryer is full of grain, the loading level device works, and the elevator will automatically stop supplying grain. When the grain in the machine is lowered to the lowering level, the hoisting machine and the like automatically work and supply the grain to the dryer=- so that the dryer is always full of grain. The grain discharge mechanism should be able to achieve adjustment or stepless speed change. Temperature control is the key to ensuring the quality of the grain. The temperature control instrument should be able to display the temperature of the hot air and the temperature of the grain. The temperature display must be accurate and the high temperature alarm.