SU937052A1 - Apparatus for cleaning grain-straw heap - Google Patents

Description

(54) DEVICE FOR CLEANING GRAIN-HALF PORK

one

The invention relates to devices for the separation of materials.

A device for separating materials using centrifugal forces is known, comprising a lattice drum, drive rollers and brushes 1.

The disadvantages of the known device are the complexity of the design and the low efficiency of the separation process.

The closest to the proposed technical essence is a device for cleaning a granular pile, which includes an elastic cylindrical sieve rotating about the horizontal axis, blown in the axial direction by a fan, pressing the roller adjacent to the outer surface of the sieve and bending it inside the cylinder at the contact points and driving 2 .

A disadvantage of the known device is the low efficiency of the separation process.

The purpose of the invention is to increase the efficiency of the separation process by increasing the use of the surface of the slat.

The goal is achieved by the fact that the pressure roller is eccentrically mounted.

FIG. 1 shows a schematic illustration of a device for cleaning a heap of straw; in fig. 2 shows section A-A in FIG. one.

The device contains an elastic cylindrical cage 1, which is located in the shells 2, which are mounted on rollers 3 and are driven in rotation by the drive mechanism 4. The pressure roller 5 is mounted eccentrically in bearings 6 and is driven in rotation by the drive mechanism 4 by means of a belt drive 7. Valve The torus 8 blows the cylindrical screen 1 axially in the axial direction. In addition, the duct 9 mounted on top of the sieve 1 delivers the air flow radially to the latter.

The device works as follows.

Using the mechanism of the drive 4, the slit 1 is driven into rotation. The heap is fed inside the cylindrical elastic slit 1, which is axially blown by the air flow created by the fan 8.

At the same time, light impurities are removed from sieve 1, the rest of the heap is pressed by centrifugal inertia force to the sieve. Grain: passes through sieve holes 1 and is removed from the device. Rotating along with the sieve, the heap rises to the top of the sieve. The pressure roller 5 rotates, strikes at cut 1 and bends it inwards. As a result, and under the action of the air flow coming from the air duct 9, the chopped heap separates from the surface of the sieve 1 and makes free flight. The straw particles under the action of the axial air flow move along the axis of the sieve. Then the pile again falls on the inner surface of the sieve and, due to the difference in velocity, the remaining grain passes through the sieve holes. The use of the proposed device allows to simplify the construction of cleaning the granular heap, increase the reliability of the elastic cylindrical sieve, increase the surface of the use of the sieve and improve the separation process.

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Claims (2)

A device for cleaning a granular pile, including an elastic cylindrical rotating sieve about a horizontal axis, blown in the axial direction by a fan, a pressure roller adjacent to the outer surface of the sieve and bending it inside the cylinder at the contact points and driving, characterized in that In order to increase the efficiency of the separation process by increasing the utilization of the surface of the slat, the pressure roller is placed eccentrically. Sources of information taken into account in the examination 1. USSR author's certificate number 138775, cl. In 07 In 1/22, 1960. 2. USSR author's certificate number 410824, cl. B 07 B 1/00, 1972 (prototype).