SU990334A1 - Vibration-type separator deck plate - Google Patents

Description

(54) VIBRATION SEPARATOR DECK

one

The invention relates to devices for sorting according to the size of solid bulk materials and can be used in the enterprises of powder metallurgy, in the building materials industry, as well as in chemical and other sectors of the national economy.

Known soundboard vibration separator, having a stepped work surface 1.

A disadvantage of the known device is the low quality of separation.

The closest in technical essence and the achieved result to the proposed device 55 is a deck of a vibration separator with elements of a regular microrelief, with protrusions and depressions. The microrelief of this deck is made in the form of a sawtooth profile, the teeth of which increase toward the discharge end, and the top of the teeth is located across the deck at an acute angle to its longitudinal axis. Such an embodiment of the microrelief makes it possible to separate particles of a spherical and isometric form by acquiring particles with a certain stability of equilibrium only in the longitudinal direction of deck 2.

The drawback of the device is the low quality of separation of particles of a spherical and isometric form, since stability of the equilibrium of these particles in the transverse direction of the deck is not ensured, and it is impossible to obtain a so-called sifting fan sorted fraction) of sufficient width.

The purpose of the invention is to increase quality. The separation of particles is spherical and isometric.

The goal is achieved by the fact that

5 in the device, the protrusions of the regular microrelief in the vertical plane are made equally high. The height of the protrusions of the microrelief is determined from the ratio

20H (D - VD - D).

where H is the height of the protrusions of the microrelief; D is the particle diameter; L is the distance between the diametrically opposite projections.

In this case, the depressions are made in the form of cells with more than three sides, and the distance between the diametrically opposite sides of the cells is determined from the ratio

A (0.15-0.5) D.

The height of the protrusions by the functional dependence is determined from the boundary sizes of the particles in the initial fraction. This is due to the fact that a spherical or isometric particle should be held only by the tops of the protrusions, not in touch, while the bottom of the cell formed by these protrusions.

The limiting ratios for D are chosen from the condition that spherical or isometric particles are wedged between the projections of the deck's micro-relief during transport and are determined experimentally.

If the functional dependence and ratio are observed, the effect of classification on the proposed deck is achieved due to the difference in the stability of the balance of particles of different sizes, when they are acted upon by active forces (forces; weights and inertia forces) and the deck is simultaneously tilted to the horizon in the longitudinal and transverse direction. directions x.

The equilibrium stability of the particle is the greater, the smaller the height of its center of gravity relative to the peaks of the protrusions of the regular microrelief of the working surface of the deck and the larger area of support (the distance between the diametrically opposite protrusions).

FIG. shows a deck, general view; in fig. 2 - section of the deck vertical plane in the transverse or longitudinal direction.

The device consists of a deck with a regular microrelief 1 and a receiver of fractions 2. For loading the deck, the starting material is the loading device 3. On the vibrating separator, deck I is set at an angle to the horizontal in the longitudinal and transverse directions. The slopes of the slope are chosen depending on the characteristics of the material being separated and the design features of the working surface microrelief.

The device works as follows.

Vibrations are signaled to the deck 1 and the source material is fed from the loading device 3 to the starting point of the deck. When particles hit the deck, they are moved in the longitudinal direction of the deck under the action of inertial forces, and under the action of gravity forces - in the transverse direction. With

This fine particles rolling over the tops of the microrelief, due to the greater stability of the equilibrium, fall into the receiver 2, located in the far end of the deck 3 away from the loading device. Large particles with a small equilibrium stability enter the receiver located directly at the boot device.

Particles that occupy intermediate sizes between small and large, fall into the receiver, located in the middle between the above receivers, thus creating a “sieving fan.

Consequently, by changing the main parameters of the separator (oscillation amplitude, frequency, etc.), depending on the design features of the deck’s microrelief and the characteristics of the source material, you can adjust the size of the sieving fan in the range from O to P, which improves the quality of particle separation

isometric and isometric.

Claims (2)

Invention Formula 1-Deca vibratory separator with elements of a regular microrelief, with protrusions and depressions, characterized in that, in order to improve the quality of separation of particles of a spherical and isometric shape, the protrusions of a regular microrelief in the vertical plane they are made equally high, and the height of the protrusions of the microrelief is determined from the ratio n (D - D: where H is the height of the protrusions of the microrelief; D is the particle diameter; L is the distance between the diametrically opposite projections. .2. The deck of claim 1, wherein the valleys are made in the form of cells with more than three sides, the distance between the diametrically opposite sides being determined from the ratio d (0.15 - 0.5) D Sources of information, p |) are given in attention during the examination 1. USSR Copyright Certificate № 755326, cl. B 07 B 13/00, 1978. 2. USSR author's certificate No. 482212, cl. B 07 B 13/00, 1971 (prototype).