DE955209C - Device for sieving muddy masses, preferably for sieving kaolin - Google Patents

Description

Device for sieving muddy masses, preferably for sieving of kaolin It is known in sludge screening to be quick and economical To achieve seven, apply mechanical vibrations, with the vibrations can be transferred either to the sieve itself or to the material to be sieved. This sifting of the sludge generally leaves a residue that clogs the sieve, so that sieving is no longer possible. You try to get around this by doing that Sieve vertically. In this case, however, it is mostly the utilization of the sieve bad. Furthermore, devices have become known in which to improve During the sieving process, a shaking force is exerted on the material and, if necessary, on the sieve will. Facilities have also become known in which one can increase the throughput rotates the sieve while sieving.

The present invention relates to such a device for Sieving muddy masses, preferably for sieving kaolin, in which the material to be sieved fed to a vertically arranged rotating, preferably cylindrical sieve will. At the same time, a vibrating device is provided, which approximates the material to be screened the same direction as the centrifugal force is subjected to a shaking force.

The object of the invention is to design the device in such a way that that with simple transmission of the forces is reliably guaranteed, that the shaking forces and the centrifugal forces in the same or parallel planes and in the same Direction act so that too rapid a falling through of the material to be sieved on the vertical arranged sieve avoided and the utilization of the sieve is significantly increased.

This is achieved according to the invention in that the as a vibrator Serving electromagnetic vibration generator one in its scope, preferably multiple subdivided, attached to the sieve ring as a magnet armature and one of the sieve separate, including the excitation winding arranged stationary magnetic core.

This construction increases the mechanical structure of the device simplified, and it can be bulky intermediate body, as in previous facilities were absolutely necessary for stiffening, etc., should be avoided. The transfer the vibrating forces on the rotating part is very simple. By Regulation of the rotation speed or the excitation of the magnet can be done in a simple manner Wise the most favorable ratio of the two forces to one another for an economic one Sieving can be set. The forces are here generally in the same Order of magnitude.

In detail, the device according to the invention can be as follows be designed: The sieve arranged for sieving sludgy masses is a vertical one Sieve container, which are set in rotation and whose walls become mechanical Vibrations can be excited. These vibrations are transferred to the material to be screened. The electromagnetic vibrator is responsible for generating the vibrations from the fixed magnet yoke provided with an exciter winding and the am Screen-mounted rotating armature is provided. The sieve is over one The material to be sieved is fed into the funnel. Due to the rotational forces occurring in the good the material to be screened is pressed against the screen once, and on the other hand, it gets over the screen wall Oscillating movements of adjustable amplitude.

It is advantageous to place the vibrator along the circumference of the To divide sieves several times. With three or a multiple of three subdivisions the vibration generator can be connected to a rotary control system. By a funnel outside the sieve container leaves the sieved material from the sieve device and through a funnel inside the sieve container the unseen.

By regulating the slope of the sieve, an additional force component, which acts in the direction of gravity, come to exercise on the material to be screened.

Claims (1)

PATENT CLAIM: Device for sieving sludgy masses' preferably for sieving kaolin, in a vertically arranged, rotating, preferably cylindrical sieve with a vibrating device which simultaneously exposes the material to be sieved to a vibrating force in approximately the same direction as the centrifugal force, characterized in that the Serving electromagnetic vibration generator has a circumference, preferably multiple, subdivided, attached to the sieve ring as a magnet armature and a magnet core separated from the sieve, including the excitation winding, arranged stationary. Be considered 's publications: German Patent No 574 801 500 49 707 926;. U.S. Patent Nos. 2,464,581, 2,5oo, 965.