RU2307499C1 - Apparatus for charging and preliminary cleaning of grain - Google Patents

Abstract

FIELD: agricultural engineering, in particular, grain cleaning technique, may be used in various fields of economy for cleaning of bulk materials.

SUBSTANCE: apparatus has electric engine, cylindrical hopper, screen, discharge branch pipes, and fixing mechanism. Hopper is adjusted by means of hopper casing inclination angle regulator and is equipped with two exits for cleaned and basic grain, respectively. There is rotating cylindrical screen within hopper, with rotational velocity of cylindrical screen being regulated. Screen cleaning brushes are attached to hopper inner wall.

EFFECT: improved quality of grain cleaning, increased efficiency and reduced grain losses during separation procedure.

1 dwg

Description

The invention relates to agricultural machinery, in particular to grain cleaning equipment, and may find application in the field of national economy for the cleaning of bulk materials.

Known bunker for bulk materials (patent 2027341, IPC ⁶ A01F 12/60, 25/08, published: 01/27/1995). However, the known device is intended for storage and drying of grain, the proposed device is used for separation of grain.

The closest technical solution is a device for controlling the flow of bulk materials (patent No. 2023640, IPC 5 B65D 90/54, A01F 12/60, published: 11/30/1994). The disadvantages of this device are: an inclined fixed sieve, which cannot by gravity provide grain separation. It is known that grain under its weight, i.e. by the force of gravity of the particles, when moving along the sieve, with such a slope of the sieve, grain particles slip over the sieve hole and are not sifted, in addition, it will become clogged, and the angle of inclination of the sieve is not adjustable.

The purpose of the invention is to improve the quality of cleaning, increase productivity and reduce grain loss during separation.

This goal is achieved in that the device, unlike the prototype, contains a hopper with an adjustable angle, inside which there is a sieve of cylindrical type, the hopper itself has two outlets for cleaned and uncleaned grain, and brushes for cleaning the sieve are attached to its wall, eliminating clogging sieve holes. Prior to the receipt of grain in the proposed device, it is blown by a stream of air to carry light impurities.

The essence of the invention lies in the fact that previously in the bunker of the grain cleaning machine, the grain is cleaned using a rotating cylindrical sieve. The inclination of the hopper body and the frequency of rotation of the cylindrical sieve is regulated depending on the type and condition of the processed material. The cylindrical sieve is cleaned with brushes attached to the hopper body.

The drawing shows a device for loading and preliminary cleaning of grain. Rack - 0, hopper body - 1, cylindrical sieve - 2, electric motor - 3, pulleys - 4, flexible link - 5, bearings - 6, brushes - 7, hopper housing tilt adjuster - 8, nozzle for leaving the uncleaned grain part with impurities - 9, a pipe for the exit of refined grain - 10.

The inclination of the fixed housing of the hopper 1 is regulated by the regulator of its inclination 8 relative to the horizon, depending on the type of material being cleaned, its quality, condition and other factors. The cylindrical sieve 2 in the housing 1 is supported by bearings 6 and rotationally driven from the electric motor 3 using pulleys 4 and a flexible link 5. The rotational speed of the cylindrical sieve 2 can be controlled by changing the pulleys and changing the frequency of rotation of the electric motor. To clean the rotating cylindrical sieve, brushes 7 are attached to the body of the hopper 1. Part of the grain is unpeeled, immediately passes through the nozzle 9 with impurities and is sent to the upper tier of the grain cleaning machine (not shown).

The cylindrical sieve 2 rotates, and the mass of grain is pressed against its walls under the action of an inertial load, sifted, and the refined grain leaves through the nozzle 10. This part of the grain is usually, as shown by experiments, refined quite well and meets the requirements of OST, if the grain is of good quality, if the grain mass is heavily clogged, then it should be re-passed along the second tier of the sieves of the grain cleaning machine or reloaded into this device for loading and preliminary cleaning of grain. Thus, we obtained pre-refined grain of high quality, significantly unloaded the grain cleaning machine, which created the opportunity to improve the quality of grain cleaning and increase productivity, reduce grain loss in grain cleaning machines.

Claims (1)

A device for loading and pre-cleaning grain, including an electric motor, a cylindrical hopper, a sieve, outlet pipes, fixing mechanisms, characterized in that the hopper is regulated by an angle regulator of the hopper body and has two outlets for cleaned and uncleaned grain, and inside it there is a cylindrical rotating sieve, the speed of which is regulated, brushes for cleaning the sieve are attached to the inner wall of the hopper.