Biochar composite coated fertilizer forming device

Abstract

The invention belongs to the field of composite coated fertilizer preparation equipment, and particularly discloses a biochar composite coated fertilizer forming device which comprises a film coating shell, a film coating liquid spraying piece, a material distributing mechanism, a driving mechanism and an airflow conveying device, wherein the top end of the film coating shell is provided with a feeding port, and the bottom end of the film coating shell is provided with a discharging port; the film coating liquid spraying piece is mounted on the side wall of the film coating shell, and a discharging port of the film coating liquid spraying piece is obliquely upward and faces the feeding port; the material distributing mechanism is located below the film coating liquid spraying piece and comprises a rotating shaft and a material distributing plate arranged on the rotating shaft in the circumferential direction, and the rotating shaft is of a hollow structure and is rotationally connected with the side wall of the film coating shell; an air outlet hole communicated with the rotating shaft is formed in the material distributing plate; the driving mechanism is used for driving the rotating shaft to rotate; and the airflow conveying device is used for conveying hot airflow into the hollow structure of the rotating shaft. According to the biochar composite coated fertilizer forming device, the coated fertilizer can be uniformly dispersed, and the coated fertilizer is timely dried in the dispersing process, so that the fertilizer is effectively prevented from being accumulated, bonded and agglomerated.

Description

technical field [0001] The invention belongs to the field of preparation equipment for composite coated fertilizers, and specifically discloses a forming device for biochar composite coated fertilizers. Background technique [0002] Biochar has a high degree of pore structure, which can increase soil porosity, enhance soil water retention capacity, reduce soil volume and quality, and at the same time contain a large number of nutrient elements needed by plants, which can promote soil nutrient cycle and plant growth. Using biochar as a membrane material to prepare packaged slow-release fertilizers can slow down the release rate of fertilizer nutrients and improve the utilization rate of fertilizers. [0003] Most of the existing film-coated fertilizer molding devices spray the film-coated liquid on the surface of the fertilizer during the falling process of the fertilizer. The film-coated fertilizer continues to fall due to gravity, but because the film-coated fertilizer surf...

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Problems solved by technology

[0003] Most of the existing coated fertilizer forming devices use the method of spraying the coating solution on the surface of the fertilizer during the falling process of the fertilizer. The coated fertilizer continues to fall due to the action of gravity, but because the surface of the coated fertilizer contains rela

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