DE1255461B - Sieve drum with rotating beater mechanism - Google Patents

Description

Sieve drum with rotating beater mechanism Sieve drums with rotating There are already various types of racket work.

What is unsatisfactory with these machines, however, is that the The dust whirled up in the hammer mechanism is partially transferred to the coarse material.

This disadvantage is wholly or partially reduced by a co-rotating one Separating disc that separates the sieve area from the coarse material outlet.

The cutting disc also has the task of handling granular material to be screened to prevent jumping from the inlet to the coarse material discharge.

The figure shows a screen drum with inlet 1, feed screw 2, beater mechanism 3, 4 mesh, coarse material outlet 5, the fine material outlet 6, and three blades 7a, 7b and 7c, and a tissue protection ring. 8

The operation is as follows: The conveyed by the feed screw 2 from the inlet 1 in the screen housing screening material is fluidized and acts as fines through the opening of the screen 4 into the hopper of the Feingutaustrages 6. The coarse material is conveyed through the beater mechanism 3 to the coarse material outlet 5 where it leaves the machine.

The cutting blade 7 c has to prevent the object that occurred at the material to be screened axial jumping to the coarse material outlet. 5

The entire amount of material to be screened is still available at the inlet, so it must the cutting disc have a greater distance from the sieve. It is also useful to arrange the cutting disc in front of the fabric to avoid excessive wear to avoid.

The same applies to cutting disc 7 b. The distance to the sieve can be smaller here, however, since some of the material to be sieved has already been sieved out. At this point, this separating disk separates the more dusty part of the sieve space from the less dusty part behind it. To protect the fabric, a steel ring 8 is provided at this point.

The cutting disc 7a only has the task of removing fine material or dust hold back. Thus, the distance to the sieve ring can be much smaller here, whereby the proportion of fine material in the coarse material is considerably reduced.

So that the cutting disc also lets through impurities that are larger are than the gap between the cutting disc and the sieve, this can be made of elastic material exist. In addition, clubs placed more on the transport can move faster Transport of the coarse material or for pushing the coarse material through in front of the cutting disc can also be attached.

Another option for removing the coarse material is through training of the cutting disks in the form of a worm thread.

Claims (2)

1. A screening drum with rotating beater mechanism, characterized in that one or more blades are mounted (7a to 7c) on the rotor. 2. Screen drum according to claim 1, characterized in that in the region of the cutting disc (7b) the screen fabric by a ring (8) or the like. Is protected. 3. Sieve drum according to claim 1, characterized in that the separating disks (7a to 7e) are made of elastic material. 4. A sieve drum according to claims 1 and 3, characterized in that in front of the cutting disks (7 a and 7 b) the beaters (3) are set to a corresponding transport of the material to be screened or of the coarse material retained. 5. Sieve drum according to Claims 1 and 3, characterized in that the separating disk (7a) at the end of the sieve (4) is designed with a larger diameter as a cover disk. 6. Screen drum according to claims 1 or 1 and 4, characterized in that the cutting disks are designed in the form of a worm thread.