SU1136850A1 - Grain material separator - Google Patents

Abstract

A GRAIN MATERIAL SEPARATOR containing a rotating rigid perforated cylinder, inside of which is placed an infinite elastic element with a section of inverse curvature formed by supporting and pressure rollers, as well as TRAYS for collecting grain of the heavy fraction, installed under the pressure roller, suctioning air for collecting light seeds fractions and loading device for supplying and:; the inlet mixture onto the inner surface of the elastic element, which is made in the form of closed annular gutters with a CROSS MI elongated holes, characterized in that, in order to improve the quality and reduce the energy intensity of the separation, the inlet end of the suction air duct is installed between the first support roller and the pressure roller in direction S of rotation of the cylinder. 00 9d (X) SP

Description

The invention relates to techniques for the separation of grain material by potnosti and can be used in agricultural machines for sorting seeds.

Known cylindrical triers, 5 containing adjacent to the drum, an elastic mesh cylinder, duct with a fan, loading and unloading devices, brush reflector [1]. 10

However, the known trier does not provide a clear separation of grain density.

Closest to the proposed one is a grain separator 15 containing a rotating rigid perforated cylinder, inside of which there is an infinite elastic element with a section of inverse curvature formed by 20 support and pressure rollers, as well as a heavy grain collecting tray mounted under the pressure a roller, a suction duct for selecting seeds of light fraction 25 and a loading device for supplying the initial mixture to the inner surface of the elastic element, which is made in the form e closed annular grooves with through-elongated holes [2J.

The aim of the invention is to improve the quality and reduce the energy intensity of separation.

The goal is achieved by the fact that in-. for the grain material parator, the inlet end of the suction duct is installed between the first support and pressure rollers in the direction of rotation of the cylinder.

The drawing shows the proposed 'separator, side view.

Separator Contains a rigid perforated cylinder 1, inside of which an elastic endless element 2 is installed. The inner surface of the element 2 is made in the form of closed annular grooves with through elongated holes (not shown). The device also contains a suction duct 3, a receiving tray 4 of the main heavy (dense) fraction, a loading device 5 and a drive 6.

. The endless element 2 has a section of inverse curvature formed by the bearings 7 and 8 and the pressure rollers 9. The lead-in end of the duct 3 is installed under the reverse portion of the curvature of the element 2 between the first support roller 7 in the direction of rotation ^{4 of the} cylinder 1 and the pressure roller 9.

The separator works as follows. ''

The initial mixture with the help of the loading device 5 is fed to the inner (working) surface of the elastic element 2, The seeds of the initial mixture under the action of centrifugal inertia forces fall into the annular grooves and by the time they begin to act on them the air flow has time to lay on the bottom of the grooves, covering oblong holes. In the zone of action of the air flow created by the air duct 3, the seeds are freed from the influence of centrifugal inertia forces on them, since the elastic element 2 in the zone between the rollers 7 and 9 moves along a triple that is close to straight. Therefore, to separate light seeds from the working surface of the elastic element, an air flow of low speed is sufficient, necessary only for a slight deviation of the trajectory of the flying particles in order to capture them with a suction duct 3.

Dense (heavy) seeds under the action of the air flow less than depart from their trajectory and, bypassing the suction duct 3, stand out in the receiving tray 4 of the main (heavy) fraction.

The stretch of the elastic element 2 'between the rollers 7 and 9 does not contact the rigid cylinder 1, being at a considerable distance from it, therefore, the structural elements of the rotating rigid cylinder 1 do not interact with the air flow in the area of the through holes and, therefore, do not impair its performance.

The application of the proposed device can improve the quality of separation by density / since all seeds in the zone between the point of descent of the elastic element from the rigid cylinder and the point of maximum deflection of this element (i.e., in the zone between the rollers 7 and 9) are exposed to uniform air flow with the same force .

In addition, the use of the proposed design allows to reduce the energy intensity of the separator, since for the separation of seeds from the working surface of the elastic perforated element in the area between the first in the direction of rotation of the support and pressure rollers, an air flow of lower force is required.

VNIIIPI Order 10364/5

Circulation 581

Subscription

Branch of the PPP Patent, Uzhgorod, Project 4,

Claims (1)

GRAIN MATERIAL SEPARATOR, containing a rotating rigid perforated cylinder, inside of which there is an endless elastic element with a section of inverse curvature formed by support and pressure rollers, as well as trays for collecting grain of a heavy fraction, installed under the pressure roller, suctioning air inlet for selecting seeds of light fraction and loading device for supplying the initial mixture to the inner surface of the elastic element, which is made in the form of closed annular grooves with through products oblong holes, characterized in that, in order to improve the quality and reduce the energy intensity of separation, the inlet end of the suction duct is installed between the first support and pressure rollers in the direction of rotation of the cylinder. S