Combined bed-knife of straw crusher

Abstract

The invention relates to a plant straw crushing equipment part for using in papermaking, clean energy source and other industries, in particular to a combined bed knife of a straw crusher. The combined bed knife comprises a bed knife rest which is arranged in a crushing cavity of the straw crusher and positioned between two knife rolls, wherein the bed knife rest comprises a horizontal bedplate and a vertical plate, and a plurality of horizontal upper supporting plates are distributed longitudinally on two sides of the top of the vertical plate respectively; and the top of the vertical plate is horizontally provided with a middle bed plate which extends longitudinally along the whole lengthwise direction, a horizontal side bed knife is arranged horizontally on each upper supporting plate, the end of each side bed knife is attached closely to the side edge of the middle bed knife, and the edges of each two adjacent bed knives and the middle bed knife form a U-shaped blade groove. The part improves the crushing uniformity of a straw crusher and makes the crushing process smooth, small in shock vibration and high in reliability.

Description

Technical field [0001] The invention relates to a plant stem crushing processing equipment component used in papermaking, clean energy and other industries, in particular to a straw crusher combined bottom knife. Background technique [0002] The existing more commonly used straw crushing devices generally include a pair of knife rollers installed in the crushing cavity. Each knife roller is arranged with a plurality of cutter heads spaced along the axial direction, and a plurality of cutter heads are evenly arranged on the circumference of the cutter head. With flying blades, the cutter discs on the two knife rollers are interlaced with each other. During the working process, the cutter discs on the two knife rollers perform relative shearing movement, and the side edges of the flying blades are used to cut and break the straw. In this structure, the cutting surface of the flying blade is perpendicular to the direction of the rotation axis of the knife roller, so it can only pro...

AI Technical Summary

Problems solved by technology

In this structure, the cutting surface of the flying blade is perpendicular to the direction of the knife roller rotation axis, so it can only produce a good shearing effect on the straw fed in the longitudinal direction, but cannot effectively cut the straw fed in the horizontal direction. , which affects the shearing effect and reduces the uniformity of shearing; in addition, when the fed straw is messy, it is easy to cause the jamming between the cutter heads, which affects the normal operation of the crushing process.

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