Device for preparing continuous coating solution in controlled-release fertilizer production

Abstract

The invention relates to a device for preparing a continuous coating solution in controlled-release fertilizer production. The device comprises raw material bins, weight scales corresponding to the raw material bins, a blending conveyor, a primary dissolving tank, a secondary dissolving tank, a two-phase separator, liquid pumps and a solvent storage tank, wherein the raw material bins are provided with the weight scales; discharge ports of the raw material bins are connected with the blending conveyor; the blending conveyor is connected with a feed inlet of the primary dissolving tank; a liquid outlet of the primary dissolving tank is connected with a feed inlet of the secondary dissolving tank; a liquid outlet of the secondary dissolving tank is connected with a feed inlet of the two-phase separator; one liquid pump is arranged at an output of the two-phase separator; an outlet of the solvent storage tank is connected with the feed inlet of the primary dissolving tank; and the other liquid pump is arranged between the solvent storage tank and the primary dissolving tank. The device achieves automatic quantitative addition of raw materials, and achieves continuous operation of the raw materials through the blending conveyor, the preparation precision of the coating solution is improved, undissolved substances are removed effectively, and the quality of the coating solution is improved.

Description

technical field [0001] The invention relates to a continuous coating solution preparation device in the production of controlled-release fertilizers, belonging to the technical field of controlled-release fertilizer production equipment. Background technique [0002] Coated controlled-release fertilizer is a special film coated on the outside of traditional fertilizers. According to the nutrient requirements of crops, the release rate and amount of nutrient release are controlled to make the nutrient release curve consistent with crop requirements. 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 the growth of crops, compared with fertilizers with the same concentration, the utilization rate of fertilizer efficiency can be increased by more than 50%. , can greatly reduce...

AI Technical Summary

Problems solved by technology

[0004] With the industrialized production of coated controlled-release fertilizers, the specification and production capacity of the main equipment used in the production of coated controlled-release fertilizers, the coated fluidized bed, is also increasing, but the preparation of coated solutions still adopts batch production. process, manual weighing and manual feeding are required when feeding, the feeding speed is slow, the labor intensity is high, the measurement accuracy is low, and the degree of automation is poor. It is not suitable for large-scale industrial production of coated controlled-release fertilizers.

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