SU967372A1 - Vibrosieve separator - Google Patents

Description

(54) VIBRATOR SEPARATOR

one

The invention relates to the separation of bulk mixtures and can be used in various sectors of the national economy, for example, in agriculture for the separation of grain mixtures by size.

A vibrating-sieve separator is known, which contains a sieve fixed in the shell, under which a movable frame is installed with external and internal cells formed by vertical walls to clean the sieve of balls, as well as a vibrator for communicating with the oscillation sieve 1.

A disadvantage of the known separator is that the peripheral sections of the sieve surface are not cleaned by balls, since under these sections there are 15 walls of the outer cells of the moving frame, adjacent to the shell and forming a ring. When the frame is embedded, these walls will mix along a circular path, overlapping part of the space under the sieve. In this case, the balls can hit the sieve only at a distance not closer than half of its diameter from the walls of the frame. Thus, in the existing design, the interaction of peripheral

sections of the sieve surface with balls is impossible, which leads to the rapid clogging of these areas with grain.

The purpose of the invention is to improve the cleaning of the peripheral portions of the sieve surface.

The goal is achieved by the fact that in a vibrating-screen separator containing a sieve fixed in a shell, under which a movable frame is installed with outer and inner cells formed by vertical walls for sieve cleaning balls, as well as a vibrator for communicating oscillations to a sieve, external walls of the frame are formed by a shell.

FIG. 1 shows schematically an example of a vibroseparator; in fig. 2 installation diagram of the moving frame.

The vibroseparator contains a frame I, on the base plate of which cylindrical coil springs 2 are mounted along a concentric circle. On the springs 2 are squeezed, a grille mill is installed, consisting of a set of shells 3, between which sieves 4 are fixed, and inside the shells there are pallets 5 made of Lg;

openings, much larger openings of the main sieves 4. Between the sieves. 4 and pallets 5 of each shell 3, a movable frame with cells and rubber balls 6 placed in them to clean the main sieves 4 is installed. The frame cells are formed by vertical walls 7, the outer walls of the outer cells are formed by shell Z. In the central part the frame is fixed on the hub 8. The outermost points of the frame rests on the friction elements 9 fixed rigidly along the outer perimeter of the pallets 5. The hub 8 is installed freely on the clamping screw 10. The frame is pressed into the friction elements 9 by means of a nut 11, a black Without the spring 12, the washers 13 and 14, the thrust bearing 15 and the hub 8. In the lower part of the sieve mill, a two-shaft unbalance vibrator 16 is connected, connected through the variator 17 to the electric motor 18. Each sieve is tensioned by a tension cone 19. The device also contains a hopper 20 , discharge nozzles 21, connecting hose 22 and pitched cones 23.

Vibroseparator works as follows.

From the bunker 20 of the grain, the mixture falls on sieves 4, making helical oscillations. Under the action of these vibrations of the grain, the mixture is stirred in sieve 4 and divided into two fractions. The retraction fraction is removed from the machine through the discharge pipes 21 and the connecting sleeve 22. The passage fraction, having spilled from the sieve 4 and the tray 5, falls on the pitched cone 23 and is removed from the machine.

Under the action of inertial forces arising from the screw oscillations of the sieve mill, the balls 6 perform a periodic oscillatory motion between the slats 4 and the tray 5, cleaning, thereby, the surface areas of the sieves 4 that are located above the cells. Under the action of the same helical oscillations of the sieve mill, the frame with cells is rotated, which allows cleaning the entire surface and decides 4. The angular speed of rotation of the frame is controlled by the degree of compression of the spring 12. As the outer walls of the outer cells of the frame are formed by the shell itself. the proposed vibroseparator provides

improving the cleaning of peripheral parts of the surface of the slat, which accordingly increases the carrying capacity of the device.

Claims (1)

Invention Formula A vibratory separator containing a sieve fixed in the shell, under which a movable frame is installed with external and internal cells formed by vertical walls for cleaning sieve balls, as well as a vibrator for communicating oscillations to the sieve, characterized in that, in order to improve the cleaning of peripheral sections of the sieve surface, The outer walls of the outer cells of the frame are formed by a shell. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 501775, cl. B 07 B 1/38, 1974.