Corn threshing and impurity removal device

Abstract

The invention discloses a corn threshing and impurity removing device which comprises a threshing part, a separating part and an impurity removing part. The threshing part comprises a first cylindrical barrel and a first threshing mechanism and a second threshing mechanism which are located in the first barrel; the first threshing mechanism comprises multiple pressing assemblies, a sieve plate, a spiral conveying spring and a motor, each pressing assembly comprises an air cylinder and a cylindrical pressing ring, and the inner wall of each pressing ring is provided with multiple rows of files; the second threshing mechanism comprises a roll shaft pair and a conveyer belt. The separating part comprises a second barrel which is arranged outside the first barrel in a sleeving mode and forms a corn kernel rolling space with the first barrel. The impurity removing part comprises a conveying pipeline, a T-shaped impurity removing tower, a collecting tower and an exhaust fan. According to the corn threshing and impurity removing device, corn kernels are separated from corn cobs by performing two-section threshing on the corn cobs, the corn kernels are separated from small-particle residue impurities and corn cob impurities by performing two-section impurity removing on the corn cobs, and the advantages of being sanitary, economical in energy, convenient to use, high in threshing efficiency, good in corn kernel quality and the like are achieved.

Description

technical field [0001] The invention relates to the field of agricultural machinery. More specifically, the invention relates to a corn threshing dust removal device. Background technique [0002] Corn is the third crop in my country after rice and wheat, and crop harvesting is an important link in agricultural development. The corn thresher is a kind of agricultural machinery, mainly used to separate the dried corn kernels from the corncobs. [0003] A conventional corn threshing device includes a drum-type threshing part arranged in a closed frame body, a sieve-type separation part surrounding the threshing drum, a cleaning part composed of a sieve plate and a fan, and only the feeding port and the The discharge port is the entry and discharge of corn. But there are still some problems: (1) Threshing part: the motor drives the rotation of the threshing drum at high speed, and the corn collides with the threshing drum to thresh, which will inevitably crush a small part o...

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Problems solved by technology

But there are still some problems: (1) Threshing part: The motor drives the rotation of the threshing drum at high speed, and the corn collides with the threshing drum to thresh, which will inevitably crush a small part of the corn cob, resulting in more impurities in the processed corn kernels , need to carry out several times of filtering and sorting; (2) separation part: the existing sieve is a plane sieve, and the corn kernels and miscellaneous materials coming out of the threshing drum will continuously fall on the sieve, and the sieving speed is lower than the accumulation speed, resulting in A large number of corn kernels accumulate on the surface of the sieve, which greatly reduces the working efficiency; (3) cleaning part: the fan can only remove the dust, but not the crushed corncobs, resulting in a large amount of impurities in the obtained product

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