SU1659129A1 - Shaking screen for classification of ore pulp - Google Patents

Description

one

(21) 4499185/03

(22) 10/27/88

(46) 06.30.91. Bul №24

(71) Institute of Geotechnical Mechanics, Academy of Sciences of Ukraine

(72) V.N.Poturaev, V.P.Naduty, A.A. Blagut, V.I. Sokolov, and B.F. Buddnik (53) 621.928 (088.8)

(56) USSR Copyright Certificate No. 1569038, cl. B 08 B 1/00, 1988.

(54) VIBRATION SCREEN FOR CLASSIFICATION OF PULP

(57) The invention relates to the enrichment of minerals and can be used in the classification of ore pulps. The purpose of the invention is to increase the performance of the screen by creating an overpressure on the sieve. The screen comprises a duct 1 with a protective screen 3, inside of which there are feeders in the form of pipes 4 with coaxial holes 5. Above the holes 5 between the screen 3 and the sieve 2 there are distributors 6 in the form of U-shaped elements, in the vertical parts of which resilient elements 9 with cutouts are in contact with the surface of sieve 2. Pulp distributors 6 are connected to actuators 7 of exciters 8, and their vertical parts are perpendicular to the longitudinal axis of symmetry of sieve 2. Pulp under pressure fills the space called vertical and horizontal parts of the distributors 6, as well as elastic elements 9. The fine fraction passes through the sieve 2, and the large fraction leaves it. 3 il.

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ABOUT

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The invention relates to the field of mineral processing and can be used in the classification of ore pulps in mining and other sectors of the national economy.

The purpose of the invention is to increase the performance of the screen by creating an overpressure on the sieve.

FIG. Figure 1 is a plan view of the classification of ore slurries; in fig. 2 shows section A-A in FIG. one; in fig. 3 is a section through a pulp distributor with a plane parallel to the longitudinal axis of symmetry of the tray.

The vibrating screen for classifying pulps contains box 1 with screen 2, covered with a protective screen 3. Above the surface of the screen inside box 1 along the sides of the working body, feeders are mounted in the form of pipes 4 with holes 5 directed toward the longitudinal axis of the working body. The openings of the left and right feeders 4 are symmetrical with respect to the longitudinal axis of symmetry of the box 1. Between the feeders 4 and the screen 3 there are dispensers 6 for pulps in the form of U-shaped elements connected to the actuators 7 of electromagnetic exciters 8. Vertical parts of the distributors 6 The pulps are provided with notches into which feeders 4 enter and which are perpendicular to the longitudinal axis of symmetry of the sieve. On the vertical parts of the elements 6, elastic elements 9 are mounted with cutouts in contact with the surface of the sieve 2. Elastic elements in the form of rubber bushings 10 are located between the vibration exciter 8 and the screen 3.

The roar works as follows.

The pulp under pressure through the holes 5 of the pipes 4 fills the spaces formed by the sides of the box 1, the distributors 6 of the pulp and the screening surface 2. As a result, an excessive pressure is created on the sieve. Hole 5 in the feeder x 4

may be coaxial, as a result, the kinetic energy of the pulp jets flowing from the left feeder, quenches the kinetic energy of the pulp jets flowing from the right feeder. 6 pulp dispensers

as U-shaped elements provide uniform distribution of the pulp on the surface of the sieve 2, limited by their size. The pulp under the force of gravity is lowered onto the surface of the sieve 2, where it is divided into classes. The sieve 2 of the oversize product is cleaned under the action of vibrational vibrations, which are transmitted to the sieve by elastic elements 9 through the pulp distributors 6, rods from electromagnetic vibration exciters 8.

Claims (1)

Vibratory screen for classifying pulps, including a screen with a protective screen, a sieve inside the box, a tube feeder with openings for feeding under the pressure of the pulp located along the sides of the box above the screen, in order to increase the performance of the screen by creating overpressure on the sieve, the screen is provided with pulp distributors in the form of U-shaped elements with elastic elements on their vertical parts with cutouts installed with interaction with the sieve, with the U-shaped elements located above the holes in the tubes, and the vertical parts are perpendicular to the longitudinal axis of symmetry of the sieve.