Improvements in Centrifugal Drums for Separating Liquids.
Year: 1892

page_text: Date of Application, 5'h Oct., 1892-Accepted, 31st Dec., 1892
COMPLETE SPECIFICATION.
Improvements in Centrifugal Drums for Separating Liquids.
I, OTTO LENTSCH, of Schoeningen, Duchy of Braunschweig, in the Empire of
Germany, Manufacturer, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
My invention relates to an arrangement of pipes in centrifugal drums for
separating liquids, which increase the pressure surface for the liquid, separate the
bulk of the liquid into a large number of thin columns and force the bulk of liquid
in its smallest columns to join the motion.
These pipes are so arranged that the liquid can enter at one end and leave at
the other end thereof. For this purpose the said pipes are furnished at their inlet.
with holes, recesses, slots, or the like, or may be cut angular to their axis, or
placed on projections beadings or the like.
To prevent the separated light and heavy parts mixing on leaving, the outlet.
orifices may be relatively displaced, so that the jets will pass below or over each
other, whilst otherwise they would pass by the side of each other.
The centrifugal drums can be filled entirely with pipes or only one or more rows
may be arranged.
The said pipes may be arranged concentrically or eccentrically and their surface
increased as desired by means of other pipes, partitions, ribs, or suitably shaping
the same and the like.
In order to regulate the flow of liquid to the said pipes as early as possible, the
same may be provided with special inlet pieces.
And in order that my invention may be more fully understood I have caused to
be appended hereunto one sheet of drawings, in which-
Fig. 1 is a vertical section of a centrifugal drum.
Fig. 2 is a plan in section of Fig. 1.
Fig. 3 is a vertical section of a centrifugal drum in which the pipes are arranged
one inside the other.
Fig. 4 is a sectional plan of Fig. 3.
Fig. 5 is a vertical section of a centrifugal drum in which the liquid enters from
the top and leaves at the bottom.
Fig. 6 is a vertical section of a centrifugal drum in which the liquid enters
through special inlets.
A is the drum, which is rotated by means of the shaft w. Into the drum A are
placed pipes B which may be of any suitable material that will resist the pressure
created. In Figs. 1 & 2 are several rows of pipes placed concentrically into the
drum, but in lieu of which, there may be one row of pipes B only, as shown in
Figs. 3 & 4. To increase the surface of the pipes B, whether placed into the
drums in one or more rows, pipes, ribs, partitions and the like may be used by
furnishing each individual pipe with ribs, partitions and the like.
The liquid moves in the direction as indicated by the arrows.
The liquid to be set in motion enters the drum through pipe z.
At b the liquid
enters the pipes and at c it leaves again separated in light and heavy liquid.
The light liquid passes to the middle, where the movement is the least and
leaves the drum at r. The heavy liquid passes to the circumference of the drum
and leaves it at m.
It is of course necessary that the said pipes take part in the
movement of the drum and it is therefore essential that such should be fastened to
the drum. For instance, I may fasten one or more of the outer pipes to the drum
by providing the pipes with holes d, so as to receive studs rivetted to the
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page_text: drum, Fig. 2. The inner pipes may then be pressed against the outer ones by
means of one or more tension rings or also by a larger pipe placed into the middle.
To give the pipes a large surface I insert other pipes or the like.
In the
pipe B, f, are inserted seven small pipes and in the pipe B, g, three larger ones
which support each other. In the pipe B, l, one pipe and one partition is inserted,
in the pipe B, i, two pipes with one sided ribs, so that the inner pipes are positioned
eccentrically to the outer ones. In the pipe B, k, is inserted concentrically a pipe
which is supported by four semi-circular conduits. In the pipe B, 1, is inserted an
oval pipe, in the pipe B, o, three sided prisms. In the pipe B, p, are pipes with
ribs inserted. It will be understood that I have shown only a few of the many
combinations, which facilitate the increase of the surface of the pipes.
In lieu of inserting into the pipes B other pipes as described may themselves be
formed, with ribs, cavities and the like inwardly or outwardly.
The pipes B, B, may be employed for different kinds of centrifugal drums.
It is immaterial whether the inlet is below and the outlet at the top, as shown
in Figs. 14, or the inlet above and the outlet below, Fig. 5.
To facilitate the entrance of the liquid to be set in motion into the pipes, I form
the inlet thereof with nozzles the mouths of which are directed towards the middle
of the drum A, as shown in Fig. 6.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim, is-
"In centrifugal drums for liquids."
1st. The employment of pipes, in such a manner, that the liquid passes through the
same for the purpose of being separated into light and heavy liquid, substantially
as set forth.
2nd. The enlargement of the surface of the pipes, through suitably shaping the
same, by forming bulges, ribs, and the like and through inserting pipes one into the
other, walls or other bodies, substantially as and for the purpose set forth.
3rd. The governing of the outlet of the light and heavy liquids through stop like
shortening of the pipes from the periphery to the interior, for the purpose of
conducting the jets under or over each other, substantially as set forth.
4th. Bending the inlets of the pipes B, B, or providing the same with an elbow
piece or the like, which are directed towards the middle of the centrifugal drum
for the purpose of facilitating the entrance of the liquids into the said pipes,
substantially as set forth.
Dated this 4th day of October 1892.
F. BOSSHARDT & Co.,
4, Corporation Street, Manchester, Agents to Applicant.