Production method and system for preparing seedling culture tray from straw

Abstract

The invention relates to a production method and a system for preparing seedling culture tray from straw. The system comprises a grinder, a pretreatment tank, a second screw conveyor, a dryer, a seedling culture tray mixing tank and a compression moulding press. The pretreatment tank comprises a pretreatment mixing tank, a first screw conveyor and a microorganism anaerobic fermentation tank. A methane monitoring alarm and a liquid level detection alarm are arranged on upper and lower portions of the wall of the pretreatment mixing tank respectively, and a stirrer is arranged in the pretreatment mixing tank. A biogas storage gas film is arranged above the microorganism anaerobic fermentation tank and provided with a gas hole, and a gas bag for biogas storage is arranged above the biogas storage gas film. A plurality of paddle agitators are arranged in the microorganism anaerobic fermentation tank, an outlet of the second screw conveyor is connected with an inlet of the dryer, an outletof the dryer is connected with an inlet of the seedling culture tray mixing tank, and an outlet of the seedling culture tray mixing tank is connected with the compression moulding press. A rural ecological environment can be improved to a great extent, and cleanness and harmlessness of the rural ecological environment are truly realized.

Description

technical field [0001] The invention belongs to the technical field of seedling-raising tray preparation, and in particular relates to a system and a production method for preparing seedling-raising trays from straw. Background technique [0002] In recent years, crop straw has become a new source of rural non-point source pollution. Every year during summer harvest and autumn and winter, a large amount of wheat, corn and other stalks are always burned in the fields, producing a lot of thick smoke, which not only becomes the bottleneck of rural environmental protection, but even becomes the chief culprit that affects the urban environment. According to relevant statistics, my country, as a large agricultural country, can produce more than 700 million tons of straw every year, which becomes "waste" that is "not very useful" but must be disposed of. [0003] The seedling tray is an indispensable component of the rice transplanter, and its main function is to realize the seedl...

AI Technical Summary

Problems solved by technology

The traditional seedling tray is made of polyvinyl chloride as raw material, which is processed and blistered through a special process formula. The plasticizer used in the production process of this method, as well as the monomers produced by the decomposition of polyvinyl chloride, have certain toxicity and are harmful to food safety. very unfavorable

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