Negative pressure coarse crushing method for crop straw bales and negative pressure coarse crushing equipment for straw bales

Abstract

The invention relates to a coarse straw bundle negative-pressure coarse grinding method. The coarse straw bundle negative-pressure coarse grinding method is characterized in that a straw bundle passes through an un-roping belt conveyor, an inclined scraper conveyor, a vertical type straw bundle coarse grinder, an air suction tube, a cyclone separator, an unloading air sealer, an air suction tube, a pulse bag dust collector, a dust-collecting air sealer, an air suction tube, a high-pressure draught fan and an air outlet tube; the vertical type straw bundle coarse grinder, the air suction tube, the cyclone separator, the unloading air sealer, the air suction tube, the pulse bag dust collector, the dust-collecting air sealer, the air suction tube, and the high-pressure draught fan are connected through the air suction tube, so that the straw bundle coarse grinding is continuously performed under a negative-pressure pneumatic transmission state. The vertical type straw bundle coarse grinder is characterized by being vertically arranged, wherein a gear roller bundle-off region, an electromagnetic iron removal region, a hammer sheet crushing region and a specific gravity stone removal region are arranged in a crusher tank body from top to top in sequence. According to the detection, the dust emission of the coarse straw bundle negative-pressure coarse grinding method meets the national environmental-friendly standards. The coarse straw bundle negative-pressure coarse grinding method realizes large-scale clean continuous coarse grinding of the straw bundle, can be applied to the fields of straw manmade plates, straw energy resources, straw feed and the like, and provides a novel and reliable process and complete equipment.

Description

technical field [0001] The invention relates to the field of straw man-made board manufacturing, and is also applicable to straw energy and straw feed industries. Background technique [0002] my country's annual grain output is more than 500 million tons, ranking first in the world, and the corresponding annual output of straw (rice straw, wheat straw, corn straw, etc.) is about 700 million tons. Produce 100 million cubic meters of medium-density straw wood-based panels, which will be used in the field of building materials, and will greatly reduce air pollution caused by burning straw, greatly reduce wood consumption, and protect forest resources. [0003] When large-scale production of straw-based panels (with an annual output of 15,000 to 50,000 square meters of straw-based panels), straw bales must be used as raw materials, and the maximum length of the straw should not exceed 100 mm through coarse crushing, and then enter the straw drying process; at the same time, the ...

AI Technical Summary

Problems solved by technology

After the straw is crushed, it passes through the screen and is discharged from the suction fan and the discharge pipe. Due to the high friction coefficient and high sediment content of the straw, the impeller of the fan wears quickly.

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