A kind of corn thresher

Abstract

The present invention discloses a corn thresher. The corn thresher comprises a threshing device disposed in a threshing bin; the threshing device is provided with a threshing roll and a supporting roll which are driven by power; the threshing roll is provided with spiral threshing ribs; the threshing roll and the supporting roll rotate in the same direction and have a set distance; front and rear ends of the threshing bin are respectively provided with a feed hopper and a core outlet; a discharge port is disposed below a rear portion of the threshing bin; the supporting roll is positioned below one side of the threshing roll; an auxiliary supporting roll without power input is disposed over the other side of the supporting roll; the auxiliary supporting roll can be rotatably disposed on a frame of the thresher and fixedly connected with the frame via a detachable connecting structure; a V-shaped threshing space is formed among roller surfaces of the auxiliary supporting roll, the supporting roll and the threshing roll; and a distance between two rollers of the auxiliary supporting roll and the threshing roll is gradually reduced in a corn cob threshing moving direction. The corn thresher has the beneficial effects that threshing efficiency is high, corn kernels are prevented from damaged, and the capability adapted to corn cob diameter sizes is high.

Description

technical field [0001] The invention relates to a corn thresher, in particular to a corn thresher with high separation efficiency and complete corn kernels. Background technique [0002] Corn is an important food crop and feed source. It is rich in nutrition and is also the food crop with the highest total output in the world. The edible part of corn is corn kernels. In order to improve the storage efficiency of corn, corn is usually stored after threshing. The corn thresher is a device that quickly separates corn kernels and corn cobs, and it is used to replace the traditional artificial corn threshing method. The existing corn thresher has many structures, most of which adopt the single-rotating threshing roller structure. There is a set distance gap between the threshing roller and the threshing bin wall. In the space of the threshing roller, the helical ribs on the threshing roller are used to shave and remove the corn kernels, and form a forward effect on the corn cob...

AI Technical Summary

Problems solved by technology

However, due to the power transmission relationship between the two rollers, the distance between the two cannot be adjusted, and the threshing efficiency will be significantly reduced when the rollers are worn or larger diameter corn cobs need to be threshed.

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