SU151142A1 - Machine for cleaning and sorting grain mixtures of centrifugal-pneumatic action - Google Patents

Description

A known grain sorting machine with a vertical cylindrical sieve mounted on a shaft, a feed hopper and a cam drive for longitudinal vibration of a cylindrical sieve, an electric motor with a driving device and a casing with chutes for removal of fractions does not provide the required amount of cleaning the grain mixture from the aromes and simultaneously sorting it on the main fraction.

In the proposed machine, in order to improve the quality of cleaning and sorting the grain mixture, two cylindrical cleaning and sorting screens, concentrically mounted on a vertical shaft, a fan with a branch pipe connected to the bunker sleeve, and an eccentric friction drive for longitudinal oscillation of cylindrical screens are used.

The Institute's Institute of Agriculture, in its conclusion, notes that the proposal is of great practical interest and recommends it for experimental verification.

The drawing shows the device of the machine.

Grain mixture from the bunker-feeder / passes along the inclined d.os-. ke 2 with a grid 3 above which the suction pipe 4 is installed. Minor impurities 5 carried along by the air flow are collected in a dust collector or other trapping device.

The material, cleaned from dust and lightweight impurities, gets onto the rotating disk 6, which evenly distributes the grain mixture to the inner surface of the rotating sieve 7.

The grain mixture, which is pressed by the centrifugal force to the vrashaus, this cylindrical sieve, is moved downward by the action of its own weight and vertical oscillations of the sieve. The number of revolutions of cylindrical sieves 7 and S and the amplitude of oscillations are regulated in a wide range. 15,242-2 so that the grain is kept on the inner surface of the sieve 7 by centrifugal force at the same time, it can slide down through the vibrations.

On sieve 7, large irimeses 9 are separated, which constitute a descent from it. The grain mixture, after passing through the cylindrical sieve 7, falls on the sieve 8, on which the separation into the main material 10 and fine impurities 5 occurs. The sieve 8 descent is the main material. All erg fractions are sent to separate receivers.

The cylindrical sieves and fan // are driven from (one electric motor 12. The cylindrical sieves oscillate (Vibrator 13, allowing the oscillation frequency and amplitude to change).

Subject invention

A machine for cleaning and sorting grain mixtures, a centrifugal-pneumatic action with a hopper and a disk-diffuser, implies that, in order to more efficient cleaning, to sort the grain mixture and the possibility of its movement along cylindrical sieves, it is jointly applied Cylindrical cleaning-sorting screens that are concentrically mounted on the Y-shaft, a fan with a branch pipe connected to the bunker sleeve, and an eccentric friction drive for longitudinal vibrations of cylindrical their sieves.