Vertical type control-releasing fertilizer membrane wrapping fluidized-bed

Abstract

The invention discloses a controlled release fertilizer coated fluidized bed which consists of an automatic control valve of a material outlet, a discharging bin at bottom, a fluidizing gas inlet, an automatic discharging device, an air distribution plate, a middle cone, a top cylinder body, a fluidizing gas outlet, a filter screen, an automatic control valve of the material inlet and a spray gun; the upside of the middle cone is connected with the top cylinder body which is internally provided with the filter screen and the spray gun; the filter screen is arranged under the fluidizing gas outlet; the distance between the spray gun and the air distribution plate is 140 to 350cm; the middle cone is connected with the discharging bin at bottom by the air distribution plate and the automatic discharging device; the automatic control valve of a material outlet is arranged under the discharging bin at bottom; the sidewall of the top cylinder body is provided with the automatic control valve of a material inlet. The technology effect is that the fluidized bed of the invention can charge and discharge materials automatically, thereby reaching the purpose of continuous operation and greatly reducing energy consumption.

Description

technical field [0001] The invention belongs to the field of controlled-release fertilizer production equipment, and in particular relates to a controlled-release fertilizer coated fluidized bed capable of continuously mass-producing coated controlled-release fertilizers. Background technique [0002] Coated controlled-release fertilizer is a special film coated on the outer layer of traditional fertilizers. According to the nutrient requirements of crops, the release rate and amount of nutrient release are controlled, so that the nutrient release curve is consistent with the needs of crops. The outstanding feature of this fertilizer is that it can supply effective nutrients synchronously according to the growth curve of crops, so that the effective utilization rate of fertilizer nutrients can be greatly improved. Under the premise of ensuring crop growth, compared with fertilizers with the same concentration, the utilization rate of fertilizer efficiency can be increased by ...

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Problems solved by technology

However, its research on coated fluidized bed equipment is in the laboratory stage or small test stage, and it is only applied to small batch intermittent production, not suitable for large-scale industrial production.

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