DE1782646A1 - Continuously working filtration centrifuge - Google Patents

Description

PATENTANWALT β Frankfurt / μaiν ι, Sept. 26, 1968

KDHHORNSHOFWEe 10 _τ , /. "

POST CHECK ACCOUNT FRANKFURT / M. 342S K / W

DRESDNER BANK, FRANKFURT / M. 333 702 TELEPHONE; 39 02 O7

TELEGRAM KNOPAT

tfeskoslovenska akademie ved, Praha

Continuous filtration centrifuge. Patent addition. ... ... (German patent application

P 16 32 274.0)

In the main patent. ... .. <> will be a continuously working one Centrifuge described with two drums open at one end, the jackets of which extend parallel to the drum axis Formed strips which are placed one inside the other that their strips interlock, the axes of these If the drums intersect or are skewed, the inner drum is provided with a hollow shaft which is inserted into the hollow shaft of the outer drum is mounted, and at one end of the drum a cord through the hollow shaft of the inner drum is fed into the interior of the drum, due to centrifugal force in the form of a helix winds up on the inner surface of both drums and peeled off at the other end of the drums, creating a Filtration layer advancing in the axial direction of the drums for the suspension fed into the drum interior is formed.

The density of the twine turns forming the filter layer depends on the feeding speed of the cord, the speed of rotation of the drums and that through both drum axes

109842/006 f

included angle dependent. By changing these sizes it can be achieved that the cord turns lie loosely or close to one another, possibly winding up in several layers. Operational Twists of the cord close together in one layer have proven to be best. 3s kan: - ·: jeiooh niav.v'.r.i?.! not be prevented that a gap is formed between two adjacent turns of the cord through which a part the firm hatred to be filtered off can pass through, so that the rate obtained is not completely pure. A decrease in the angle between the drum axes, whereby the speed of the axial forward movement of the Filter layer is reduced, or an increased feed rate of the cord only cause the filter layer to begin to lay out in two or more layers.

According to the invention, this disadvantage is prevented in that at least one of the drum shells at the open end inward-reaching elevations are provided. These elevations can, for example, by inwardly reaching Pins or the inner circumference of one of the drums superelevating ring be formed.

Examples of the arrangement according to the invention are shown in the drawing. Show it:

1 shows the centrifuge according to the invention in longitudinal section, FIG. 2 shows a cross section through part of the drums and

3 shows a longitudinal section through one of the drums.

According to FIG. 1, the centrifuge has two drums 1 and 2 which are open at one end and whose jacket is made of parallel Bars 5 and 6 are formed, the bars 5 of the drum 1 with some play in gaps between

109842/0060 bad original

engage the strips 6 of the drum 2 and vice versa. If a rotary movement is thus given to the drum 1, for example, the strips 5 of the drum 1 take the strips 6 and thus also the drum 2 with them. Hollow shafts 4 and 4 'are attached to the end walls of both drums 1, with shaft 4' of drum 2 leading through shaft 4 of drum 1. The shaft of the drum 1 is mounted in a fixed bearing 7 which is connected to a centrifuge casing 29. The shaft 4 'of the drum 2 is mounted in a bearing 8 within the hollow shaft 4, which allows the axes of the two shafts 4, 4' to pivot relative to one another by a small angle. The mutual '.Yinkellage the axes of the two drums 1, 2 v / ird determined by a further bearing 9 of the drum 2, the position of which z. B. is adjustable by means of a micrometer screw 10, against which the bearing 9 is pressed by a peder 11 supported above against it. The shaft 4 of the drum 1 is provided on the open linden tree with a pulley 12 for driving both drums 1, 2.

The cord 13 which forms the piltrating layer 20 is into the interior of the drums 1, 2 through the cabbage shaft 4 'of a winding device (not shown) is supplied from and when the drums 1, 2 are rotating, the centrifugal force acts on them in a helical line inner surface of the drum shells. The mutual inclination of the axes of the two drums 1, 2 causes the cord 1? continuously towards the open linden of both drums 1, 2 is advanced, where it passes through a roller 16 one with the axis of the shaft 4 'coaxial ^ Hohr 22 sucked off is, vo: ·: where it is fed into a device (not shown) for cleaning and wrapping, in order then to be cleaned again fed to the hollow shaft 4 'for the purpose of repeated formation of the filter layer I ^.

JDrfindungsgeraäS are at least on the inner circumference at the end one of the drum mantles elevations 14 are provided, for example as inwardly reaching, in the ends of the strips attached pins or as one the inner circumference of one of the

109847/0060 bad OKGhNAL

Drums are formed with a superelevating ring. In the last Pail it is advantageous, as shown in Fig. 1, that the bars 5 are longer than the bars 6, so that the bars 6 enough leeway for the there is a mutual change in position of the two drums 1, 2 if pins 14 'are used, as in FIG. 3 is indicated, the bars 5, 6 of both drums 1, 2 can be of the same length.

The elevations 14, 14 "ensure that the filter layer 20 is formed from closely spaced helical lines of the cord 13, which are against these elevations 14, 14 'and are thus pressed against each other.

109842/0060

Claims (3)

Claims 1. Continuously working filtration centrifuge after Patent, (German patent application P 16 32 274.0) with two drums open at one end, the jackets of which are formed from strips running parallel to the drum axis and which are placed one inside the other that their strips interlock, the axes of these drums intersecting or being skewed, the inner drum is provided with a hollow shaft which in the hollow shaft of the outer drum is mounted, and a line through the hollow shaft of the inner drum 'g at one end of the drum is fed into the interior of the drums, to a helical line wound on both drums due to centrifugal force in! form on the inner surface and on the other The end of the drums is withdrawn, characterized in that at least one of the drum shells is provided with inwardly extending elevations (H, 14 ') at the open end. 2. Centrifuge according to claim 1, characterized in that the elevations than at the end of the strips (5) one of the Drums (1) arranged ring (14) are executed. 3. Centrifuge according to claim 1, characterized in that the elevations are designed in the form of pins (14 ') (which are inserted into strips (5) of one of the drums (1). 109842/0060