SU1238814A1 - Concave for vibratory separator - Google Patents

Description

The invention is intended for the separation of granular material on vibrating non-perforated surfaces and can be used in the agricultural, mining and predatory industry for enrichment of ores and separation of bulk materials.

The purpose of the invention is to improve the quality of separation by increasing the uniformity of the distribution of the exciting force of vibration over the area of the deck. I

FIG. 1 shows the deck of the separator, axonometric; in fig. 2 - deck view in rectangular coordinates

At the same time, the place of supply of the initial mixture is indicated, on the deck, place 2 of the maximum tilt of the deck to the horizon (}, place 3 of the minimum tilt of the deck to the horizon ((min) trim 4 of the deck from which the material to the receivers descends to receivers, and restrictive bar 5 .

Deca works as follows.

The original grain material is fed to the deck, where c4 Under the action of a slight tilt of the deck in the direction perpendicular to the plane of vibration, the particles move in that direction. As they move, the particles cross conditional planes parallel to the plane in the fraction, and reach that plane, the angle of inclination in which the curved surface to the horizon is smaller than their maximum angle of ascent up the vibrating surface. At this place the particles rise upward on the surface and leave the surface of the deck. If the limiting angles of rise for the opposite components of the initial mixture are different, then these components descend from the surface of the deck in various places, and, accordingly, fall into the receivers. If the values of мMox and (Fig. 2) cover all values of the limiting angles of ascent up the vibrating surface of the studied particles, then this deck does not require reconfiguration, since the particles in the course of their movement will certainly find the deck where the maximum angle to the horizontal plane will allow them to overcome it. In this case, the particles do not stop on the surface of the deck and do not brake.

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separation process. By changing this angle by 13.3-18.5 through each meter of deck length, the maximum quality is achieved. J Due to the fact that parts of the one under the action of vibration can make a reverse movement (the moment of the negative value of the component force of the vibration, directed upward), dp

To prevent particles from falling from the deck surface to the extent of overcoming them, a special safety screen (bar) is installed on the deck. 5. Along the edge 4

) 5 decks are set up to receive the shields of the separated components, their number can be arbitrary depending on the condition of the separation process (the number of components and the location of their descent from the deck surface is cut 4).

The deck length (overall size of the deck in the direction perpendicular to the plane of vibration) significantly affects the quality of the separation process. If the deck is not long enough, then the streams of particles with different maximum angles of ascent up the deck surface intersect and fall into the same receivers. If the deck is longer than the optimum length, this leads to an increase in material consumption and a decrease in the effective use of the deck surface,

, j but does not lead to an increase in quality

process, since in this case the fluxes of particles with different but fairly close values of the limiting angles of rise move at a higher

dd distance from each other than this

required to achieve maximum quality.

The width of the deck also depends on the value of d oC. The more To (, the more L should be (Fig. I, and 2). This is due to the fact that the more Lo, the greater the ability to process more complex mixtures, i.e. with a larger number of components. To eliminate

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intersections of these components and

an appropriate working surface width is required. If the width of the deck exceeds the optimum, then just as in the first case, the material costs are increased and the useful life of the deck surface is reduced. The maximum quality of the process can be achieved with a deck width equal to (1.4) Lo (. When this value decreases, the seed recovery rate decreases, which characterizes the quality of the separation process. The separation process quality is achieved due to the possibility of separating the entire complex of mixtures - sieves of materials without reconfiguring the angle of inclination of the deck to the horizon in the plane of vibration, as well as the possibility of obtaining an arbitrary number of fractions with a continuous separation process.

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Editor I. Nikolaichuk

Order 3325MT Circulation 565Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab. 4/3

Production and printing company, Uzhgorod, st. Project 4

ft L

2

Compiled by A. Rum ntseva

Tehred O. Gortvay I Proofreader, I. Erdei

Claims (2)

1. DECK OF VIBRATION SEPARATOR, made in the form of an inclined to a horizontal plane in two directions curved surface with a uniformly increasing angle of inclination in the direction of vibration, characterized in that, in order to improve the quality of separation by increasing the uniformity of distribution of the exciting vibration force over the deck area, deck curvature perpendicular to vibration direction Figure 1 monotonically decreases, while the maximum angle of inclination of the deck and the horizon in the direction of vibration decreases perpendicular to the direction of vibration by 13.3-18.5 degrees through each meter of the length of the deck, and the width of the deck is equal to k ° C where k = 0.13- 0.14 m / deg; where sumac is “the maximum angle of inclination of the deck to the horizontal plane in the direction of vibration; (Bottom ~ the minimum angle of inclination q <about deck to the horizontal “plane in the direction of vibration. 2. Soundboard pop. 1, characterized in that the deck cut perpendicular to the direction of vibration of the deck from the side of the minimum values of the inclination angles of the deck surface is provided with a limit bar.