Screening device for grain processing

Abstract

The invention discloses a screening device for grain processing. A box, a feeding hopper, a sieve barrel and a discharging hopper are included. Horizontal supporting rods are arranged above and belowthe sieve barrel. Sliding blocks are fixed to the upper end and the lower end of the sieve barrel and provided with vibration holes. The vibration holes are each of an oval structure, and the supporting rods penetrate through the vibration holes. The supporting rods are sleeved with springs, a piston rod of an air cylinder is arranged towards the sieve barrel, a horizontal guiding barrel is fixedin an equipment cavity in the other side, and an air bag is arranged in the guiding barrel. A plurality of protrusions are fixed to the lower surface of an upper vibration plate, and a lower vibrationplate is further provided with protrusions. The arranged air cylinder is used for pushing the sieve barrel to move left and right, the sieve barrel moves left and right under the action of the air bag and the springs, grains inside swing left and right and are evenly shaken, the protrusions on the vibration plates are in contact during left-right swinging, the sieve barrel is made to constantly shake up and down, and dust, gravels, wizened grains and the like in the grains are shaken off.

Description

technical field [0001] The invention relates to an agricultural machine, in particular to a screening device for grain processing. Background technique [0002] The grain coming out of the harvester often contains dust, wheat ears, wheat bran, shriveled particles, etc., so that the grain cannot be directly stored and used. Therefore, it is necessary to screen the harvested grains to remove dust, wheat ears, wheat bran, shriveled particles, etc. [0003] In order to remove dust, wheat ears, wheat bran, shriveled particles, etc., a grain screening device is used. However, the existing grain screening device is relatively simple, often just a simple filter sieve, which is manually shaken by workers to achieve screening, making the screening effect poor. Contents of the invention [0004] The object of the present invention is to provide a screening device for grain processing to solve the problems raised in the above-mentioned background technology. [0005] To achieve the...

AI Technical Summary

Problems solved by technology

However, the existing grain screening device is relatively simple, often just a simple filter sieve, which is manually shaken by workers to achieve screening, making the screening effect poor

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