DE1961278A1 - Continuously working separating centrifuge - Google Patents

Description

PATENT LAWYERS CMPL-ΙΝΘ. A. WEDDE DIPI-INQ. K. EMPL

Accounts: Pat. Attorney Dlpl.-Ing. A. Wedde Poetseheck: Münohen No. 47 392 Bank: Deutsche Bank No. es/22 6O1

8 MUNICH β Ο Schumannetr. 2 - Tel .: CO81O4S8147

Telegrams: "Patontwedde-Munich

5th December 1969

6774

Societe "Fives Lille-Cail 7, rue Mont alivet
Paris 8e (France

Continuously working separating centrifuge.

The invention relates to such continuously operating centrifuges, in which a full-walled, conical centrifuge basket carries a sieve that is kept at a distance from its inner surface, so that the filtered when passing through the sieve Finds liquid passages, wherein the liquid is discharged through bores or passages,. which is discharged at the end of the centrifuge basket having the larger diameter. At this A frustoconical skirt is attached to the end, gives way to the basket and widened towards the other end of the centrifuge basket. From

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the bores or passages of the centrifuge basket thrown out liquid is collected by this apron and flows over its inner surface and arrives finally to the outer end of the apron, from where it is thrown against a fixed partition, which chambers for receiving the solids and the Liquid separates.

An otherwise very considerable air circulation between the Inside of the centrifuge basket and the one for the intake To prevent the liquid certain chamber, the Total cross-section of the holes or passages for the The passage of the filtered liquid can be limited. However, in order to still be able to discharge the filtered liquid, the one with the larger diameter is An annular groove is provided at the end of the centrifuge basket the bottom of which the holes or passages open. This ring groove can be divided into several chambers by dividers to improve the rigidity of the basket rim.

This increases due to this constructive training Weight and moment of inertia of the centrifuge basket, making it more difficult to manufacture. With cast Centrifuge baskets in which the annular groove in the

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1981278

for this reason a relatively thick edge is provided " it was found in particular that voids form in this area

The object of the invention is to provide a centrifuge basket to create, which has less weight and is easier to manufacture than the known centrifuge baskets .

According to the invention this is achieved in that the for the uptake of the liquid filtered through the sieve certain annular groove or chambers by an annular groove or a series of recesses in the edge the apron attached to the basket is formed. This eliminates the need for an annular groove or chambers on the Centrifuge basket so that it does not have any recesses Except for screw holes required for fastening the apron, which reduces the weight of the Korbes and a facilitated fabrication is effected.

It should be pointed out in this connection that the production of the apron does not have the same difficulties how the manufacture of the centrifuge basket prepares. With this apron it is easier to use a without a horn

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can be obtained, since its large diameter flange piece does not have a bead-like thickening, which would promote the formation of cavities. It is still possible to use this light metal apron or a light metal alloy with which the weight of the assembly of the centrifuge basket and apron can be reduced.

Further features and advantages of the invention emerge from the following description of exemplary embodiments of the drawings, in which shows:

1 shows an axial section through a grounding separating centrifuge designed according to;

i'ig. 2 shows an enlarged section of the centrifuge basket and the skirt of the centrifuge shown in Figure 1;

Fig. 3 shows a section along the line 5-3 in Fig. 2}

FIG. 4 shows a sectional view similar to FIG. 2, but with a modified one Embodiment j

FIG. 5 shows a section along the line 5-5 in FIG. 4

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I ¹ Ig. 6 is a sectional view similar to FIG. 2 * of a further embodiment.

The separating centrifuge illustrated in FIG. 1 has a full-walled, conically upwardly widening basket 10, which around one on the tub 14 of the device fixed vertical pivot pin 12 rotates. This tub is through a cylindrical partition 16 in a ! • liquid receiving chamber 18 and a solids receiving chamber 20 split.

The inner surface of the basket 10 is covered with a sieve 22, which is spaced apart by suitable spacers this surface is held so that the liquid passing through the sieve to the upper end of the basket can flow.

At the upper end of the basket has a flange 24 projecting outwards perpendicularly to its axis (cf. Jj ¹ fig. 2), on which a frustoconical skirt 26 is fastened with screws 28. This full-walled apron expands downwards and consists of light metal or a light metal alloy, for example aluminum. The apron has an inward at its upper end

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facing edge strip, which is provided with a leg of recesses, which together with the flange 24 a Form a series of chambers 30, which are provided between the sieve and the inner surface of the basket Passages leak. By the elan of the basket, announce Bores 32 which connect the bottoms of the chambers with the space between the basket and the skirt. Instead of this series of recesses, an uninterrupted groove can also appear in the apron forms an annular groove with the flange of the basket.

The skirt has cylindrical ends at both of its axial ends surfaces 34 and 36, which are at the level of the upper Edge of the welding wall 16 or at the level of a deflecting plate 38 are arranged, which has the shape of a very has flat truncated cone, the na, ch below as a cylindrical surface 40 expires in the septum 16> is attached while maintaining a small distance from this. The lower end of this cylindrical wall surface 40 stands in an annular groove 42. The inner edges of the partition 16 and the baffle 38 also end a small distance in front of the cylindrical! surfaces 34 and 36, so that ring spaces of its gap width arise.

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Characterized in that opposite the upper sand of the partition wall 16 and the edge of the baffle 38 cylinder surfaces on the Apron 26 are formed, the assembly of the device is facilitated, as the width of the gaps between them Parts and the skirt remain the same regardless of what relative elevation is within the by the axial Elevation of the cylinder surfaces lying boundaries of the centrifuge basket and take the tub to each other.

During operation, the liquid filtered through the sieve flows over the inner surface of the centrifuge basket to the chambers 30 _f, from where it is discharged through the bores 32. At the outlet side of these bores, the liquid is thrown against the inner surface of the skirt 26 and flows to its lower end, from where it is thrown off under the centrifugal force as a horizontal sea egg.

This liquid curtain hits the baffle 38, flows along the wall 40 and then falls into the groove 42, over the edge of which it passes and then into the liquid receiving chamber 18 arrives.

The cross-section and the number of the holes 32 become so

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chosen that the chambers 30 can not fill because in this i'all the accumulated! liquid over the The edge of the basket would flow away.

Figures 4 and 5 illustrate a modified embodiment of the invention, in which the chambers 30 · forming recesses in the full thickness of the upper edge of the skirt 26 * are incorporated and wherein passages or slots 64 are provided, which the chambers connect to the space between the basket and the apron. These passages or slots are formed in the edge of the apron. In this embodiment, the skirt is also with screws 28 * attached to the flange 24 'of the basket. At a In such an embodiment, the series of recesses can go through one in the full thickness of the edge of the apron incorporated annular groove can be replaced, and the passages 64 can be replaced by a series of at the bottom of the chambers 30 »opening holes can be replaced or by a Ring groove as in the previous embodiment.

The form of training according to Figure 6 differs from those of Figures 2 and 3 in that the chambers 30 ** received a much greater depth so that they

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extend radially outward beyond the hand of the ^{pool 24 lf of} the basket. The chambers are made by making recesses in the hand of the apron so that their radial depth is greater than the width of the flange 24 ^feet . In this way, passages 66 are ussparungen between the bottoms of these ^ and the! Flange 24 formed ^lt, is provided via which a connection between the chambers and the Haum, the and the skirt is located between the basket 10 * * 26 ^fl.

In the three embodiments, the flange 24, 24 * or 24 '' of the centrifuge basket not right angled either run to its axis. It will be understood that all such embodiments, including those which obtained by using technically equivalent means fall within the scope of the invention.

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Claims (1)

5th December 1969 File: PSm 6774. Patent to s pril marriage 1.) Continuously working separating centrifuge with a fully-walled, conical centrifuge basket carrying a sight, on one of which, the larger diameter end one that widens in the direction of the other end of the basket and surrounding this frustoconical skirt attached and for receiving the through the sieve penetrating liquid a hanging groove or a Series of chambers is formed, in the bottom or bottoms for the discharge of the liquid bores or passages open, characterized in that the for receiving the filtered through the sieve liquid-specific annular groove or chambers (30; 30 *) by an annular groove or a Series of recesses is formed in the hand of the apron (26; 26 *) attached to the basket (10; 10 *) or are «_ y-y- _ 109824/0921 2.) Separating centrifuge according to claim 1, characterized in that that the bores or passages, which the annular groove or the chambers with a between the Connect the apron and the space located in the basket, formed by recesses on the edge of the apron. 3.) Irenn centrifuge according to claim 1 or 2, characterized in that that the edge of the apron on a transversely extending Elansch of the basket is attached and that the annular groove or the recesses from the surface of the skirt is or are worked out, which rests on the surface of the flange. 4-.) Irenn centrifuge according to claim 3, characterized in that that the depth of the recesses is greater than the width of the flange of the basket, so that between the bottoms of the recesses and the edge of the basket gap remain, which are the connection between the chambers formed by the recesses and the space between the apron and the basket form. - III 109824/0971 - ill - 5.) Irenn centrifuge after. Claim 1 or 2, characterized characterized in that the annular groove or recesses are made of the solid material is or are worked out on the axial thickness of the edge of the skirt. 6.) Separating centrifuge according to one of the preceding claims, characterized in that the apron from light metal or a light metal alloy. S / S 6 109824/0921 Blank page