Photo: Collected
1, grain dryer classification
According to the heating temperature classification, the following is the grain drying temperature classification of the commonly used circulating dryer and continuous dryer.
The continuous dryer uses a high-temperature method to heat food, usually, the hot air temperature is not less than 90 ° C, which can achieve rapid drying, and the continuous dryer has a large installed capacity, and the drying capacity is generally 100 ~ 200t. The circulating dryer uses a low-temperature method to heat raw grains, the general hot air temperature is not higher than 60 ° C, the drying time is long, and the general need to cycle 8 ~ 10h to the storage drying. A single installed capacity of 10 ~ 60t. In order to meet the drying of large output and meet the market demand, the production of several low-temperature circulation dryers are usually connected in parallel to form a drying line, and now some manufacturers have the highest installed capacity of 120t/ set, or even higher.
2, the selection of grain dryer, rice corn wheat with what type of dryer?
2.1 High-temperature continuous grain dryer
High-temperature continuous grain dryers are commonly used to dry rice, wheat, and corn. The dryer has a high drying temperature, large precipitation range, large processing capacity, high efficiency, and high appearance, but it occupies a small area. Considering the construction investment in the building, the drying line is built outdoors, that is, the dryer is placed in the open air, and the building only needs to do a good job of basic equipment, saving the cost of the plant and shortening the construction project cycle. Therefore, the overall acquisition and construction costs are low. Electrical appliances through PLC control to achieve automatic drying, the drying process is safe and reliable.
2.2 Low-temperature circulating grain dryer
Low-temperature circulating grain dryer is usually used for drying rice and wheat. This dryer drying food, food uniformity, and good quality, often as an important process of seeds and rice processing, generally use a few machines in parallel as a drying line, the height is not high, generally about 15m, after the parallel transport equipment increase, need to be placed indoors, can not be placed outdoors, resulting in high acquisition and construction costs, and long cycle, Generally, with the planning, civil construction period, equipment installation, etc., it takes at least half a year to have the conditions for food. Electrical control can be controlled by PLC to achieve automatic drying, the whole drying process is safe and reliable, and now some manufacturers can also realize intelligent operation, closer and closer to the Internet of Things era.
Source:
Online/GFMM
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