The features and require of tradition hammer type straw knead machine, one kind new-type cutter of applying to straw knead machine was designed. The cutter of using zigzag longitudinal knife and dovetail zigzag cross knife, able to finish crops straw longitudinal knead and transverse cutting at once. Application of the new cutter, water and sugar lose significantly reduced in the knead straw, and working efficiency was reasonably well. Field experiments show that using this new tool knead moisture content 56% corn straw ,the moisture and sugar content of material were 50% and 10% respectively after kneading, productivity was1.9t, the length of straw material was 3~6mm.

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