US1485235A - Centrifugal separator and the like - Google Patents

Description

Feb. 26 1924. 1,485,235

w. MAuss I CENTRIFUGAL SEPARATOR AND THE LIKE Filed Sept. 14. 1923 2 Sheets-Sheet l jr wenfo'r Feb. 26 19.24.

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W. MAUSS' CENTRIFUGAL SEPARATOR AND THE LIKE Filed Sept. 14 1923 2 Sheets-Sheet Patented Feb. 2d, 1924.

- a r I M GENTBIFUGAL SEPA-LBATOR AND THE LIKE.

Application filed September 14, 1923.

To aZZ whom 2'??- may concem:

Be it known that l, 'WILHELM Manes, a subject of the King of Great Britain. residing in Johannesburg, Union of South Africa, have invented certain new and useful Improvements in and Relating to Cen trifugal Separators and the like, of which the following is a specification.

This invention relates to improvement in continuously rotating continuous separators of the kind described in the specifications of United States Letters Patent Nos. 1,441,732 and 1,419,285.

In Patent No. 1,4192 5, a centrifugal separator is described in which the drum consists of a series ot'axially spaced separating chambers bounded by conical walls and separable by toggle mechanism sliding on the drum shaft structure. The conical walls form peaks between the chambers and on each peak and on the side of the same remote from the feed pipe, a bafiie is provided having slots beneath it leading to the next chamber. These battles hold back any frothy floating matter and the peaks and the overflow lip of the top bafiie are at substantially thesame radial distance from the axis of the machine.

According to the present invention, the battles are arranged on the sides of the peaks nearest to the feed inlet. Further, the overflow lip on the topchamber is at a less radial distance from the axis of the machine than the peaks of the lower chambers.

This construction presents advantages in the retaining of solids by the baflles, providing a greater radial depth of liquor and a slower flow over the peaks when the machine is in operation. It also presents advantages when the apparatus is used in the displacement process described in U. S. Patent No. 1,4t1,732 above referred. to in which any liquor in the chambers is washed out by means of a liquid of lighter specific gravity. Owing to the improved arrangement of the baflies the displacing liquid enters practically at the smallest distance possible from the axis 01": the machine, flows on the inner surface of the liquid under treatment and displaces same toor a little beyond the out-- er lip of the bafiie, so that it the displacing liquid is carefully regulated the dilution of the total separated liquor at the top overfiow or discharge point of the machine is practically nil.

A turther feature of the invention con- Selial No. 652,702.

sists in the method of mounting the drum sections and the battles. In this method, the top baffle ring and the top drum section are fixed to cylinder which is slidably mount ed on a central driving shaft and operated by means of toggle mechanism. The re maining baille rings each carry a drum section and are freely slidable on the cylinder, the cylinder being of different diameter for each ring and having a shoulder formed thereon adapted to raise the battle and drum section when said cylinder is raised. The drum is closed by a fixed bottom section. The shoulders on the cylinder are so spaced and arranged as to raise the baffle rings and drum sections to cause an opening of the drum sections when the cylinder is raised by the toggle mechanism. 7

' The baffles are in the form of solid rings or discs havingbosses thereon which form openings between the peaks of the 'drum' sections and the baffles so that no liquor can 7 stood it will'now be described by reference to the accompanying drawings, in which:

Fig. l is a sectional elevation of a separator constructed according tothe invention,

the separator chambers being closed, and

Fig. 2 is a similar view shewing the chambers open. r

Fig. 3 is a sectional view of the inner portion of the apparatus, showing themechanism for opening and closing the chambers.

As shewn the drum comprises the separate rings 1 and fixed bottom ring 2 forming a series of chambers bounded by conical walls. The rings 1 are each mounted on baflie rings 3 slidable on a cylinder 4:, the cylinder being slidable on a central driving shaft structure 5, by toggle mechanism 6 operated by a rod 7 The top ring 1 is of a slightly different shape and is secured to the cylinder '41:, a separate baflie 1 being attached to the cylinder below the ring first mentioned.

The use of the battle 1" is optional. The toggle levers 6 are each pivoted at 59 to a guide ring 51 secured to a boss 52' carried by the shaft 5. The lower ends of the toggles are pivoted at 53 to a ring 54: secured to the bottom of the cylinder, said ring being slidable over guide ring 55 on the bottom hearing. The shaft 5 is rotated by power applied to the pulley 5 and rotates the drum and cylinder. If the rod 7 is raised by suit able means the toggles 6 are operated and raise the cylinder from the bottom, the ring 51 being a slidin lit with the cylinder.

vVhen the red I is lowered, the cylinder is also lowered. The cylinder t is of a different diameter for each ring 3 and is provided With shoulders 8 arranged one below each ring 3 and so spaced that when the cylinder is raised by the toggle mechanism 6 as above described, the rings 1 and 3 will be raised and, the chambers formed by the rings 1 will be opened. lVhe-n the cylinder is lowered the rings also slide down and close the chambers.

The bafiie rings 3 are attached to the peaks 9 formed between the chambers and on the sides of the peaks nearest the feed inlet 10 and are in the form of solid rings spaced away from the Walls of the chamber by bosses through which the securing bolts 11 pass, passages. 12 being thus formed between the chamber wall and the baflle. In the con struction illustrated all the chambers are intended to retain the lighter material in the; section of the chamber Within the radial limits of the battle rings. The overflow lip b. on the top chamber is at a less. radial distance: from the axis of the machine than the other peaks, providing a greater radial depth of liquid and slower flow over the lower peaks.

The drum is mounted in a receiyer 1a having a discharge opening 15- for solids at the bottom and an annular passage 16. and discharge outlet 17 for the separated liquor at the top.

The operation of the apparatus is as previously described. in the aforesaid: U. S. patents to which referencemay be had.

Fig. 2 shews the apparatus with the separator chambers opened for discharge of solids.

Having thus. described the nature of my said, invention and the best: means. I know of carrying the same into practical effect, I claim 1. In a centrifugal decanter, a drum composed, of sections forming between them V.-sectioned settlement chambers separated by peaks and axially separable to discharge solids from said chambers, said drum ha=.v ing an inlet and :1 liquid overflow remote from said inlet, and battles arranged on the sides of the peaks nearest to the inlet of the apparatus.

2. In a centrifugal decanter, a drum composed of sections forming between them V-sectioned settlement chambers separated by peaks and. axially separable to discharge solids from said chambers, said drum having an inlet and a liquid overflow remote from said inlet, battles arranged on the sides of the peaks nearest to the feed inlet of the apparatus, the top chamber having an overflow lip at a less radial. distance from the axis of the machine than the peaks of the lower chambers.

3. In a centrifugal decanter, a drum com-- posed of sections forming between them V-scctioned se tlement chambers separated cylinder, means on which said cylinder is shdable, a drum surrounding said cylinder and composed of sections forming between them V-sectioned settlement chambers separated by peaks and axially separable to discharge solids from said chambers, said drum having an inlet and a liquid overflow remote from the inlet, bafile rings secured in spaced relation to the sides of the peaks nearest to the feed inlet of the apparatus and slidably mounted on said cylinder.

5-. In a centrifugal decanter, a central cylinder, a drum surrounding said cylinder and composed of sections forming between them V-sectioned, settlement chambersseparated" by peaks and axially separable to discharge solids from said" chambers, said drum having an inlet and a liquid overflow remote" from. saidinlet, the uppermost chamber having an overflow lip at a less radial distancefrom the axis of said cylinder than the peaks of the lower chambers, bafile rings secured to the sides of the peaks nearest to the feed inlet of the apparatus and slidably mounted on said cylinder. said bafiierings being spaced. from. the peaks of said chambers With which they are respectively associated.

6. In a centrifugal decanter, a central cylinder, a drum surrounding said cylinder and composed of sections formingbetween them v-sectioned settlement chambers separated by peaks and axially separable to discharge solids from said chambers, said drum having an inlet and a liquid overflow remote from said inlet, bafiie' rings secured to the sides of the peaks nearest to the feed inlet of the apparatus and slidably' mounted on said cylinder, a top drum section tired to the cylinder and means on which the cylinder is slidable;

7. In a centrifugal decanter, a central cylinder having a plurality of shoulders on its periphery, a drum surrounding said cylinder and composed of sections forming between them V-sectioned settlement chambers separated by peaks and axially separable to discharge solids from said chambers, said drum having an inlet and a liquid overflow remote from said inlet, bafile rings secured to the sides of the peaks nearest to the feed inlet of the apparatus and respectively slidably mounted on said cylinder above said shoulders, at top drum section fixed to the cylinder and means on which said cylinder is mounted to slide.

8. In a centrifugal decanter, a central cylinder having a plurality of shoulders on its eri herv and bein of lar er external v D b diameter below each of said shoulders, a drum surrounding said cylinder and composed of sections forming between them V- sectioned settlement chambers separated by peaks, said sections being axially separable to discharge solids from said chambers, said drum having an inlet and a liquid overflow remote from said outlet, a bafiic ring secured to the side of each of said peaks which is nearest to the feed inlet of the apparatus, said baflle rings being slidably mounted, respectively on said cylinder above said shoulders, a top drum section fixed to the cylinder, means on which the cylinder is slidable, the top chamber having an overflow lip at a less radial distance from the axis of said cylinder than the peaks of the lowerchambers.

9. In a centrifugal decanter, a central cylinder, a drum surrounding said cylinder and composed of sections forming between them V-sectioned settlement chambers separated by peaks,said sections being axially separable to discharge solids from said chamber, said drum having an inlet and a liquid overflow remote from said inlet, the top drum section being fixed to the cylinder, a baflle on the cylinder on the side of the peak of said chamber nearest to the inlet of the apparatus, bafile rings secured to the peaks of the lower chambers on the sides of the latter nearest to the inlet and slidably mounted on the cylinder and means on which the cylinder is slidable. In testimony whereof I have signed my name to this specification,

WILHELM MAUSS.

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