SU1676673A1 - Screening arrangement - Google Patents

Abstract

The invention relates to equipment for the separation of bulk materials by size with the crushing of large pieces and m. used in coke-chemical, coal, ore, construction, etc., of the national households. The goal is to increase the yield of the year-long product. The material from the feeder 5 is fed to the rotating bzoban 1 with grate bars, which are fixed on it with a cantilever and with a tilt in the direction of rotation. Large pieces are grabbed by grate and fed into the zone of action of the scourge (B) 2, pivotally mounted on the rotating rotor 3 and spring-loaded relative to it by springs 10. The impact force B 2 on the pieces depends on the compressive force of the spring 10 when the B 2 interacts with the stop 4. Displacement of the stop 4 in the grooves 9 relative to the rotor 3, the compression force of the springs 10 is adjusted. The grate bars are arranged with an opportunity for free passage between B 2. The material that has passed through the grate, as well as the products of crushing along the chute 11, fall on the screen b. 2 Il. , B t I ..-,

Description

The invention relates to equipment for the separation of bulk materials by size with crushing large pieces and can be used in coke, coal, ore, construction, metallurgical industries and other sectors of the economy.

The purpose of the invention is to increase the yield of the under-sieve product.

Figure 1 shows the device, a General view; figure 2 is the same, a top view.

The device consists of a screening surface made in the form of a rotating drum 1 with grates, mounted on it cantilever and inclined in the direction of rotation, spring-loaded scourges 2 mounted pivotally on the drive rotor 3, which has counter rotation relative to the drum 1, stop 4, feeder 5 and the screen 6. The drum 1 and the rotor 3 are rotated through the rotor 7 from the engine 8. The stop 4 is mounted with the possibility of movement in the grooves 9 relative to the rotor 3. The whips are spring-loaded with springs 10 and are arranged to pass ezhdu grate them. Under the drum 1 and the rotor 3 is a tray 11.

The device operates as follows.

When the crashing material, for example coke, falls from the conveyor belt of the feeder 5 to the grid-irons rotating with the drum 1, its preliminary sieving to the classes occurs. Oversize product, for example, in the form of pieces of class + 80, is removed from the total cargo flow by the grates of the rotating drum and intersects into the zone of action of pests 2, which hit the pieces and destroy them. The impact force is the sum of the rotational speed of the drive rotor 3 and the additional compression force of the springs 10. The compression force of the springs is regulated by a stop 4, which is in contact with the scourges and installed in front of the pieces destruction zone. Destroyed pieces fall on the tray 11 and enter together with the sifted screening material on the screen 6. If, for example, metal gets under the scourges, they are rejected, and the metal slips onto the tray 11.

Claims (1)

Claim A screening device comprising a feeder and a screening surface made in the form of a drive drum, on which grates are mounted cantilever and with an inclination in the direction of its rotation, and spring-loaded whips located with the possibility of passing grates between them, characterized in that. in order to increase the output of the under-sieve product, the device is equipped with a drive rotor, on which the pests are pivotally mounted, and with a stop installed to interact with the scourges and move relative to the rotor, while the rotor is mounted to rotate towards the rotation of the drum with grates, and the scourges are spring-loaded relative to the rotor .