CZ2593U1 - Shake - Google Patents

Description

The invention relates to a vibrating device, in particular for vibrating screens for separating solid particles of loose materials on screen screens embedded in a sieve frame for shaking or reciprocating motion, consisting of vibrating unbalance motors mounted rotatably and movably on a horizontal beam arranged transversely to the horizontal direction.

BACKGROUND OF THE INVENTION

The prior art vibration screening devices for separating solid particles of bulk materials on sieves with shaking or reciprocating motion consist of unbalanced vibration motors rotating around the vibration motor axes. In order to adjust and change the direction and location of the resultant of the impulse forces induced by the rotation of the unbalance vibratory motors, the vibratory motors are mounted rotatably or displaceably on a substantially horizontal beam arranged transversely to the horizontal direction and coupled to the sieves whose shaking or reciprocating movement in the desired direction. A vibration device (DE 34 10 573) is known, consisting of two unbalance vibratory motors arranged rotatably on a horizontal tubular beam fixed transversely to the horizontal movement direction of the screens between the housing sides mechanically connected to the screens. By rotating the motors in vertical planes, the vibration required inclination of the resultant of the impulse forces relative to the horizontal plane can be achieved. Another known solution (CS 247 950) includes

-2-vibrating screen with two unbalanced vibratory motors, the casing of which consists of two flat-shaped side walls, between which the crossbars are fixedly fixed, on one side. one vibrator is slidably mounted on the sidewalls and a second vibrator is slidably mounted on the other sides of the sidewalls. By moving the vibrators and adjusting their position in the longitudinal direction of the sidewall, the angle of action of the resultant pulse forces of both vibratory motors can be adjusted. Said solutions also make it possible to introduce the resultant of impulse forces into the real total center of gravity of vibrating masses of the sorter. The disadvantage of these solutions is that they allow to change and adjust the direction of the resultant in one horizontal plane or in planes inclined to this plane at a small angle. In the case of vibratory screens, comprising a set or multiple sets of screens arranged horizontally one above the other, it is often necessary to shift the center of gravity of the resultant impulsive forces significantly in the vertical direction. This need arises in particular when the working height of the sieves changes, namely the number of sieves or the working flow of the bulk material. This displacement of the position of the resultant of the impulse forces in the vertical direction does not allow known solutions.

The essence of the technical solution

These drawbacks are largely eliminated by vibrating equipment, especially for vibrating screens for separating solid particles of bulk materials on screen screens embedded in a sieve frame for shaking or reciprocating motion, consisting of vibrating unbalance motors mounted rotatably and sliding on a horizontal beam arranged transversely to the horizontal direction wherein the beam is rigidly connected to vertical brackets provided with sets of apertures for adjustable connection to the front wall of the screen frame, which may preferably be in the form of vertical grooves. The vibrating device according to this technical solution allows for a significantly easier adjustment of the resultant height

-3 pulse forces of vibration motors over a larger height range. It also allows you to adjust each vibration motor separately. By selecting the position of the vibration motors correctly, optimum net frame trajectories and suitable different speeds in the front and rear of the net frame can be achieved. In this way, it is possible to ensure that the sieved bulk material does not form standing areas, which then fall through the sieve more slowly.

Overview of the drawings

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a side view of a vibration device according to the invention and FIG. 2 shows a front view of a vibration device according to the invention. '

Examples

The vibrating screen of FIG. 1 comprises a screen frame 11 for accommodating surface screens (not shown) for separating solid particles of bulk materials. The screen sieves are arranged on several floors (3) one above the other, and the individual floors (3) can be filled or empty differently in operation. As a result, the vertical position of the center of gravity can vary considerably for different levels of floor filling (3y).

from unbalanced vibratory motors with respect to the desired mesh frame trajectory. The vibration motors (4) are fastened by screws (7) to the horizontal cross-member (8), for example of tubular shape, by means of eyelet flanges (5). The vertical brackets (8) formed by rectangular shaped flat moldings with vertical bars (10) are welded to the horizontal crossbeam (8) and their surfaces (11).

The vibration device consists of 4, two in number

-4WWTT = - ··· / ·, 'i' ··: 113S.

The IKs adjoin the end wall (2) of the screen frame A1). The surfaces (11) adjoin the bracket (9) to the end wall (2) to which the screws f / 3) are attached. Referring to Figure 2, four vertical brackets (9k with two vibratory motors / 4) are attached to one crossbeam (8). However, the vibration device according to the invention may consist of two vibration motors (4) attached to two independent crossbeams (8), independently adjustable in height. The vertical brackets - (9) are preferably provided with a plurality of holes (12 ') for screws <- (13) for easier fixing and adjustment of the position or the holes (12) can be designed in the form of vertical grooves (14). ) relative to screws / 13).

Claims (2)

A vibratory device, in particular for a vibratory screen for separating solid particles of bulk material on screen screens embedded in a sieve frame for shaking or reciprocating motion, consisting of vibratory unbalance motors mounted rotatably and movably on a horizontal beam arranged transversely to the horizontal movement direction of the screen; The beam (8) is rigidly connected to the vertical brackets (9) provided with sets of holes (12) for adjusting the connection with the front wall (2) of the screen frame (1). 2. Vibration equipment. according to claim 1) characterized in that the openings (12) are in the form of vertical grooves (14).