DE675179C - Uninterrupted centrifugal machine - Google Patents

Description

Uninterrupted centrifugal machine With the ones in use up to now uninterrupted centrifugal machines are commonly used for conveying and Removal of the thrown material during operation, special means are provided.

The cumbersome design of these means causes great difficulties in the manufacture of the centrifugal machines. In addition, the rub for promotion the goods serving devices such. B. wings, snails, scratches, etc., the good that is sometimes inadmissible.

In the other type of known continuously acting centrifugal machines, which for dedusting dry. or for desludging and dewatering of wet bulk materials serve, the centrifugal drum will also have a shaking motion in addition to the twisting motion communicated through which the thrown material for repeated throwing means the centrally arranged spreading disc is brought in and so all the way from above goes through to the lower exit point from the drum.

Also, are similar bodies with successive vibrations known of the rotating sieves, in which the goods are thrown back from the sieves will. In the case of such devices, special ones must be used to remove the thrown material Funds are taken.

In contrast, the centrifugal machine according to the invention has no scratches, Conveyor vanes, screws and the like, which cause such trituration of the material would, or no special devices for the promotion and removal of the same. According to the invention, the progressive movement of the thrown material is along the generatrix of the drum shell elastic (harmonic) Vibrations of the sieve drum caused in their axial direction.

On the drawing are some Axisr management examples according to the invention dozes. posed, namely show.

Fig. I is a vertical section of a centrifugal machine and Fig. 2 and FIG. 3 shows two further embodiments of the same on a smaller scale, also in FIG Cross-section. In all of these embodiments, there is the centrifugal machine essentially consisting of a conical or cylindrical drum i with sieves or Filtrierfl.flächen 2, which at the same time with the rotation still fast oscillations (Vibrations) can be communicated in the axis direction of the drum i. Are the walls the centrifugal drum is conical, so its angle of inclination is smaller than the angle of friction of the material to be processed against the drum walls to choose so that the thrown material does not come out of it without the drum vibrating could be thrown out.

If the drum now gets an oscillating motion in addition to the revolving motion Movement in their axial direction, like that. the thrown material moves to the sloping walls upwards with one due to the amplitude and frequency of the vibrations certain speed.

But if the drum i is designed to be cylindrical, the centrifuged one moves Good also along the surface line of the drum upwards at the expense of compensation the thickness of the material layer between the points of entry and exit of the material the drum.

To generate such vibrations of the sieves in the axial direction the drum becomes the entire drum or only its outer wall on the main shaft resiliently moveable.

The main shaft 4 of the drum itself can be fixed as well as movable be stored in guides or on flexible supports. In the latter case it gets also the main shaft vibrations in the axial direction of the drum and thereby equalize the kinetic energy of the drum masses by removing the two vibratory movements are offset from one another by half a period.

With, one in guides or on flexible nozzles in the axial direction movably mounted main shaft, the centrifugal drum i on the main shaft q. sit tight, and while the vibrations of the sieves 3 take place in the axial direction together with the main shaft. The resilient attachment of the centrifugal drum i the main shaft q. can be implemented in any known way: by the Arrangement of a springy Bü-'ä @ ts 3 (Fig. I), a leaf spring 3 (Fig. 2) Wider of screws 3 (Fig. 3) and the like.

The attachment to the shaft i of the entire drum instead of the outer one Wall i alone does not differ essentially from those in the drawing shown embodiments. The drum forming a whole with the outer wall i is at the shaft q. also resiliently attached in the type shown in the drawing.

The attachment to the shaft q. replaced by a guided tour, and the drum is held on the shaft only by the resilient connection.

The vibrations of the wall i or the entire drum in its axial direction can be generated by any means.

Fig. I shows one of the possible types of this generation of vibrations shown. In this embodiment, for. B. immovable electromagnets under the drum 5 arranged. When energizing - the electromagnet by alternating current or interrupted Electricity is temporarily attracted to the iron mass of the drum base and: issued the resilient mass an oscillating movement. You can do such a movement too obtained with electromagnets excited by direct current. Be for this purpose on the bottom circumference of the drum i projections 6 are provided, which when walking past the electromagnet 5 are attracted.

If the shaft ¢ is also movable in the axial direction, the Vibrational movements of the drum i through the shaft as well as at fixed as well as at resilient mounting of the drum are transmitted. The wave q. can the vibrations be issued in some known manner: by a crank device, the Circulation of unbalanced masses by electromagnetic means, e.g. Quake described, hydraulic, pneumatic, etc. Like. With each such type of generation of vibrations but the principle of the operation of the drum according to the invention remains unchanged.

Because the axial oscillatory movements are interrupted as well as can be excited at times, so: the drum can also without interruptions be loaded or unloaded in the company as well as temporarily. This will make their area of use significantly expanded.

It can be used in all areas of technology, in which so far only the interrupted acting centrifugal machines applied will. In addition, by arranging a filter layer (e.g. made of canvas) on the seven are also suitable for those processes for which up to now Filter press, vacuum filter, compression devices and the like are used.

The uninterrupted effect makes the centrifugal machine for them too Processes can be used in which the interrupted machines are not suitable was.

Claims (1)

PATENT CLAIMS: i. Uninterrupted centrifugal machine, consisting , from a sieve drum rotating at high speed, characterized in that that for the uninterrupted advance of the thrown material in the direction of the generators the drum shell the - screen walls of the rotating drum elastic (harmonic!) Vibrations in the axial direction of the centrifugal drum are communicated. z. Centrifugal machine according to claim i, characterized in that the centrifugal drum is on the shaft is suspended resiliently movable. 3. centrifugal machine according to claim i, characterized characterized in that the drum shafts are suspended resiliently movable in the axial direction is.