Stalk cutter

Abstract

The invention relates to a straw chopper, comprising a distributing roller, a cropping roller, a rack and a chain type dissepiment conveyor; the front end of the rack is provided with a feed inlet and the rear end thereof is provided with a discharge hole; the distributing roller is arranged above the feed inlet; a cross cutting tooth and a circumferential cutting tooth are arranged on the distributing roller; the cropping roller is arranged at the oblique and lower part of the rear side of the distributing roller; the outer circle of the cropping roller is provided with a plurality of cutting knives; the lower part of the cropping roller is provided with a particle screening plate which consists of a frame and a plurality of screening pieces; each screening piece is arranged in the frame in parallel and a gap is left between the two adjacent screening pieces; a pressure plate is arranged between the distributing roller and the cropping roller; the middle shafts of the distributing roller and the cropping roller are connected with a power device; the chain type dissepiment conveyor is arranged at the lower part of the feed inlet and a roller of chain type dissepiment conveyor extends to the bottom of the front end of the distributing roller. The straw chopper of the invention has the advantages of compact structure, reasonable layout, reliability and safety, even crashing, high efficiency and high yield and can realize continuous feeding.

Description

technical field [0001] The invention relates to boiler feeding equipment for a straw power plant, in particular to a machine capable of unbundling and shredding straw bales. Background technique [0002] With the shortage of mineral energy, the use of biomass energy straw to generate electricity has attracted widespread attention in the industry. my country is a large agricultural country, and the annual output of various crop straws is very large. Using straw as fuel is low in cost, clean and pollution-free, and straw It has a high calorific value and is an ideal biomass energy. [0003] After the straw is collected from the farmland, it is first transported to the factory. The factory uses a hydraulic baler to compress the loose straw into neat blocks to form straw bales that can be stacked compactly, and then transports the straw bales to the power plant. The power plant uses the feed The equipment unbundles the straw bales, shreds them, and then sends them to the boiler ...

AI Technical Summary

Problems solved by technology

[0004] There are two main types of feeding equipment, one is the straw crusher, the other is the hammer crusher. The straw crusher uses a disc crushing knife, which has a large contact area with the straw and a large frictional resistance. Heat generation, prone to fire accidents, poor reliability

[0005] The hammer crusher breaks the straw and bales by gravity hitting and rolling, which eliminates the fire hazard caused by frictional resistance, but its crushing efficiency is low and the output is low, which cannot meet the requirements of power plants

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