Centrifugal Separating Apparatus with Continuous Action.
Year: 1899

page_text: Date of Application, 19th July, 1899-Accepted, 14th Oct., 1899
Centrifugal Separating Apparatus with Continuous Action.
I, MAX GÜTTNER, of Chemintz, Saxony, Engineer, 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:-
The accompanying drawing illustrates a centrifugal separating apparatus with
continuous action, by means of which solid bodies can be separated from liquids,
without personal co-operation.
Fig. 1 is a vertical section along the line C, D, in Fig. 2.
Fig. 2 being a horizontal section along the line A, B, in Fig. 1.
The vertical shaft e which supports the drum y is supported at a and d and
worked by a belt-pulley_c.
The drum f g h consists of a flat bottom f, a conical hood g and a cover h.
A flat ring surrounds the hood g and covers the upper circular opening
the fixed receptacle b.
of
In the lower and wider part of the conical hood g, immediately above the
bottom b, holes g¹ are formed, through which the liquid can run out of the
drum. The solid constituents of the matter to be treated pass from the drum
through m, Fig. 2.
The frame of the machine is surrounded by a fixed cylindrical mantle q.
Between and there remains a hollow space in which two inclined planes n
The solid mass passing out
are arranged in oppositely inclined directions.
through m runs towards the outside on these surfaces n.
The separated liquid elements run out of the drum fy through the holes g¹,
as will be hereinafter explained, and collect at to be carried off through p.
A certain number of
The interior of the drum is constructed as follows:
sieve brackets o, w, m, are pivoted in part at o on trestles r and in part at m
in the hollow lugs fixed on the mantle of the drum. They are regulated by a
central endless screw, the lower end of which rests on the top of the shaft e
of the drum, and which springs upwards towards the outside in passing through
the hollow shaft s. The last named is firmly connected with the cover h and
turns in the bridge t. A small gearing 1, 2, 3, 4, transmits the motion from s
to . The tooth wheels 1, 2, and 4 are each furnished with 20 teeth; the
wheel has 19 only. The wheel 1 is mounted on s; 2 and 3 are rigidly con-
nected with one another and rotate loosely on their mutual axis; 4 is fixed
on the endless screw. As the hollow shafts has the same speed of rotation as
the drum, i, must be somewhat in arrear.
This relative motion of the axis i in relation to the drum is in course trans-
mitted to the three sieve baskets w the toothed crowns of which engage with
the endless screw i.
A feed funnel or hopper ¹, fixed to the frame of the machine, receives the
raw material to be treated and swings it to the tubes fixed to the cover of the
25
mouth 11 into
drum h. These three tubes meet at the top in a circular

page_text: which runs the funnel or hopper . Each tube v runs at o into one of the
three sieve baskets w.
v
The centrifugal force already developed in the tube facilitates the descent of
the material.
Each sieve basket w is perforated as a sieve, with a large number of holes,
is made of strong sheet copper, and is in the form of a hollow conical revolving
body. In order to utilise the space as advantageously as possible, the generating
line thereof forms an arc of a circle having its centre in i (Fig. 2).
The interior surface of the sieve mantle is covered with a metallic tissue with
close meshes, as shown in the drawing by means of crossed hatchings. Ribs or
wings ay divide the interior of the basket w into a certain number of com-
partments (see Fig. 1) in order that the matter to be treated, lying on the metallic
tissue, may have a certain supporting surface and not be capable of mixing
freely, while such wings or ribs also prevent any retrograde motion of the material
during the action of the apparatus. The ribs or wings are formed of plates
of sheet metal and by rings y, fixed by riveting or soldering, which ensure the
necessary rigidity to the ribs or wings.
The action of this centrifugal apparatus is as follows: During the rotation
of the drum f, g, h (600 to 1000 revolutions per minute) and whilst the sieve
baskets o, w, m are receiving a second motion from the shaft with the endless
screw, the matter to be treated enters the sieve baskets uninterruptedly
through o. Under the influence of the centrifugal force, the material is
gradually carried in the direction of the arrows z indicated in Fig. 2 against
the sifting mantle w where it is subjected to a certain more or less considerable
dessicating action. In consequence of the relative rotation of the sifting basket,
the material in a having acquired greater consistency, passes gradually into
other zones of centrifugal force. The arrows show the direction in which the
material under treatment is carried by the centrifugal force. It has a tendency
to be partly carried against the opposite inner wall of the sifting basket and partly
towards the outside through the opening m.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
1. A centrifugal apparatus with continuous action, provided with sifting
baskets, rotating in the interior of the centrifugal drum, which receive the
matter to be treated and convey it to the interior of the said drum, during the
working of the apparatus, into various zones of centrifugal force indicated by
wings which divide the interior space of the basket into several radii and
are firmly fixed to the perimeter of the sieve basket, and serve to prevent any
retrograde motion of the material to be treated during the rotation of the sieve
baskets.
2. A centrifugal apparatus according to Claim 1, in which the sieve baskets,
which are supported horizontally, are formed preferably as conical rotary bodies
and the mantles of which correspond as far as possible to the periphery of the
centrifugal drum, that is to say, are curved in the form of an arc of a circle.
3. A centrifugal apparatus according to Claim 1, in which the sieve baskets,
which are of conical shape, and are furnished at the base with a toothed crown,
are simultaneously controlled by a shaft with endless screw i, arranged con-
centrically to the axis of rotation of the centrifugal drum.
4. A centrifugal apparatus, according to Claim 1 in which the sieve baskets
constructed in the form of a cone, terminate at their pointed extremity, in a
cylindrical hollow tube m, through which the solid elements of the material
treated pass from the drum.
5. A centrifugal apparatus according to Claim 1 in which the separate removal´
of the liquid treated, and of the solid matter, is effected by dividing the surface
of the drum into two zones by means of a circular ring k, which projects there-

page_text: from, one of these zones receiving the removal holes m of the sifting baskets,
and thus allowing the dry material to pass out, whilst the other is provided with
holes for the liquid already separated in the interior of the drum, substantially
as described above and as illustrated in the accompanying drawing.
T
1
1001
T.... 1900
HUGHES, SON & Co.,
38, Chancery Lane, London, W.C.,
For the Applicant.