SU685358A1 - Jigging screen for sorting hot materials - Google Patents

Description

(54) VIBRATION GRINDING FOR SORTING HOT MATERIALS

I

The invention relates to the metallurgical industry for sorting hot lump materials.

The vibrating screen is known, on the sides of the boxes of which self-balancing vibrators with synchronizing gears are installed. The vibrators are interconnected by an intermediate shaft 1.

The disadvantage of this screen is the presence of synchronized gears and an intermediate shaft located directly in the zone of thermal influence of the material. The service life of these elements is extremely limited and limits the reliability of the screen itself.

The closest in technical essence and the achieved result is a vibrating screen, including a box with a screening surface and a drive with two self-synchronizing vibrators located behind the outer walls of the sides of the box; vibrators mounted directly on the side walls of the box 2.

The disadvantage of this screen is that the horizontal forces acting on the screen of vibrators from the balance of the vibrators bend its sides.

In addition, the vibrators cannot be moved to a distance greater than the width of the box, since they are installed directly on the sides, and therefore they are largely affected by thermal radiation from the material.

The purpose of the invention is to increase the service life of the screen.

This goal is achieved by the fact that in a vibrating screen that includes a box with a screening surface and a drive with two self-synchronizing vibrators located behind the outer walls of the sides of the box, the vibrators are installed at the ends of the transverse beam perpendicular to its axis, and the beam is longer than the width of the screen.

FIG. 1 - general view of the screen; in fig. 2 is a cross section of the screen.

Claims (2)

The screen consists of a box 1 with a screening surface 2 and two self-synchronizing vibrators 3 mounted on a transverse beam 4, the length of which exceeds the width of the box 1. The screen is mounted on shock absorbers 5 to isolate unbalanced inertial loads 5. The vibrators 3 are directly mounted in sleeves 6 with double walls , which makes it possible to refuse the use of a system of forced circulation lubrication and be limited only to water cooling. During operation, the cavity 7 is filled with water, which shields the vibrator from the thermal effect of the hot material and removes heat from the bearing units. Making the beam longer than the width of the screen makes it possible for vibrators to be placed on it outside the heat-affected zone of the hot material. The arising horizontal inertial forces, when the debalance shafts of the vibrators are rotated, are closed on the beam and are not transmitted to the screen of the rumble, which could create bending moments in the boards and lead to the destruction of the box. Claims of the invention A vibrating screen for sorting hot materials, including a box with a screening surface and a drive with two self-synchronizing vibrators located behind the outer walls of the sides of the box, characterized in that the vibrators are installed at the ends of the crossbeam perpendicular to its axis. , moreover, the length of the beam is greater than the width of the screen. Sources of information taken into account in the examination 1. V. Bulychev, V. Boldyrev. New equipment of the processing plants M., Nedra 1967, p. 52--53, fig. 27. 2. Handbook of ore beneficiation. M., “Nedra, 1972, Vol. 1, p. 72-74 (prototype).