PL21103B1 - Sorting by means of a pulsating air stream. - Google Patents

Description

The invention concerns a method of sorting by means of a flowing air stream as a sorting medium. In the device, the poured minerals are stratified according to the specific weight on an immobile sloping grate through which a pulsating air stream flows from below.

The present invention relates to a method of converting a continuous air flow, for example from a fan, into a pulsating flow. For this purpose, the device is provided with two or more rotary flaps which partially shut off the streams and operate in pairs rather than alternately with a constant cross-section of the flowing air streams.

The drawing shows two embodiments of an apparatus for practicing the present invention. Fig. 1 shows an apparatus with an air flow guard and a single grate, fj. 2 - a device with a pulsating air stream and two successively lined with grates.

Coal, poured into the funnel A, by means of the adjustable damper B, gets in an even layer on the sloping grate C. The movements of the poured coal create a stream of air, which flows from the fan in the form of a continuous stream and the support of the rotary flaps E turns into a flow stream flowing in from the bottom through the grate. Coal moves downwards and is sorted according to specific weight, particles with the highest specific weight (waste) remain at the bottom and components with the lowest specific weight (scales) at the top. As a result of the steady advance, under the action of the jerking air stream, an uninterrupted layer is formed which is the thickest at the outlet F. This layer is removed by means of a suitable mechanically displaced bolt, Coal, pouring out of the outlet F of a single rublebee, optada aa aesyp /, and with a double grate (Fig. 2) - on the second grate G of the same shape as first. The sorting starts again from the beginning, however, after the removal of the waste, the bottom layer is now adhesions, the removal, the pazetz of the outlet H in the same way as the waste through the outlet F. Pure carbon falls from the hopper 7, the continuous air stream turns to jolting by means of rotating flaps E, which pass the airflow from the fan to two or more channels one by one, and after a short period of time the flaps are switched again, so that each channel is supplied with a pulsating air stream. The dampers have a common or a separate drive, whereby they can be regulated and set.

The air supply is regulated by the K oraiz damper by changing the rotational speed of the fan D. The number of air currents and their intensity is changed by appropriate adjustment of the rotational speed of the damper E.

With a single grate, its surface is exposed, for example, to the action of jets from two air chambers in such a way that the E clamps are pressed together and arranged so that the cross-section of both openings is always constant or almost constant. Any value. As a result, an air source of constant or nearly constant power can operate in conjunction with these dampers with the greatest efficiency.

In the double grate, each of the split grates has its own clamps and an adjustable drive.

For patent reasons. 1. the method of sorting by means of a pulsating air stream, characterized by the fact that the continuous stream of air is divided into partial streams by means of valves that extend in alternating groups at a constant cross-section of the streams air. 2. The method according to isastrz, 1, characterized by the fact that between two power sections, working alternately, part of the waste with a higher specific weight is removed.

C a r 1 s h ii 11 e Actien-Gesellschaft f ii r E i s e n gi e s s e r e i u n d M a s c h i n e n b a u.

Deputy: Ing. St. Pawlikowski, patent attorney, to the patent description No. 21103.

Ark. 1.

FIG. 1 To patent description No. 21103.

Ark. 2.

FID.2 Print by L. Boguslawski and Ski, Warsaw.