Straw shredding machine

Abstract

The invention relates to a straw shredding machine. The machine comprises a rack, a pair of shredding shafts, a pair of press rollers and a motor, the shredding shafts and the press rollers are all installed on the rack in a vertically-parallel mode through bearings at the two ends, one ends of the two shredding shafts and one ends of the two press rollers are connected through transmission gears respectively, one of the shredding shafts is connected with the output end of the motor, the two shredding shafts are each provided with large blades and small blades, the large blades and the small blades are arranged on each shredding shaft at intervals, a large blade of one of the shredding shafts is rightly located in a gap formed between two adjacent large blades of the other shredding shaft, an upper material pressing plate and a lower material pressing plate which are arranged in parallel in the vertical direction are installed between the shredding shafts and between the pressing rollers, and a conveying channel serving for straw to pass is formed between the upper material pressing plate and the lower material pressing plate, wherein the lower material pressing plate remains unmovable, and the upper material pressing plate can be vertically adjusted and used for adjusting space of the conveying channel so as to be adapted to the straw of different sizes.

Description

technical field [0001] The invention relates to the field of agricultural machinery, in particular to a straw cutting device capable of cutting crop straw into filaments. Background technique [0002] In many areas of our country, a large number of crop straws have not been fully utilized, some are piled up on the ridges and roadsides, and most of them are burned in the fields. This treatment method not only wastes resources, but also causes serious environmental pollution, destroys the balance of the ecological environment, and even causes fires, and sometimes affects ground and air traffic. Therefore, such treatment methods in some places have become a public nuisance . [0003] Straw is not only rich in effective fertility elements such as potassium and silicon, but also contains a large amount of organic matter. These organic matters rot and form humus, which not only provides nutrients for crops, but also reduces soil bulk density and increases soil porosity, which is...

AI Technical Summary

Problems solved by technology

The existing shredding device adopts a feeding roller and a shredding roller to cut shreds. The disadvantages in use are: the shredding effect is not good, and it is easy to have a large difference in the length of the shredded material. ; When the moisture content of the straw is large, the straw is easy to wind up on the shredding mechanism

At the same time, for straw blanket products, the degradation time of straw straw blankets is long, and it cannot provide organic nutrients for plants in time, which affects product quality.

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