Centrifugal Separators.
Year: 1897

page_text: Date of Application (in the United Kingdom) 6th, May, 1897
Complete Specification Left, 6th May, 1897--Accepted, 3rd July, 1897
Centrifugal Separators.
I, ERIK GUSTAF NICOLAUS SALENIUS, of Kräftriket, Albano, in the Kingdom of
Sweden, 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 :-
For the purpose of increasing the skimming power of a milk and cream centrifugal
separator, various so-called partitions have been proposed, and these partitions have
mostly consisted of variously shaped plates inserted in the drum of the centrifugal
separator.
This invention relates to an arrangement for the above purpose in centrifugal
separators, in which arrangement the annular plates hitherto used have been given a
new shape by being bent angularly along their diameters.
In the annexed drawing Fig. 1 shews a drum of a centrifugal separator in vertical
section, Fig. 2 the same in horizontal section, and Fig. 3 a portion of the drum in
vertical section, Figs. 4 and 5 show one of the partitions viewed from one edge and in
plan.
In the middle of the drum A there is the usual chamber B forming at the same
time the milk inlet. Surrounding it there is placed on the bottom of the drum a
ring-shaped support C for the plates which is hollow and open towards the centre
(Fig. 2). This support may however evidently be dispensed with if the bottom of the
druin is formed to suit the bent form of the plates. On this support the annular
plates D are placed, one upon the other and with their angular sides parallel to each
other, recesses E at their inner edges being made to engage with the cross ribs on the
chamber B so as to keep the plates in place. On the top plate a suitably shaped
cover G is placed, or there may be inserted a ring F corresponding to the shape of the
plate and bearing against the underside of the cover G of the druin, thus partly
holding the set of plates in place in the drum and partly keeping the plates from
changing shape whilst the centrifugal action is taking place. The plates D which,
viewed in plan, form a ring, are bent right across along one diameter thus obtaining
a kind of roof-shape. Spread out flat the plate, consequently, has a larger diameter
measured across the bend than when measured along the latter, provided that the
plate, viewed in plan, is of circular contour. On the surfaces of the plates, there may
be affixed lugs H or stamped projections for the formation of a suitable space between
them. The introduction of the milk or liquid into the drum takes place in the usual
manner through the central inlet pipe B to the hollow support C, over the upper edge
of which the liquid passes into the set of plates. A portion of the liquid then passes

page_text: (at two diametrally opposite points) directly out into that part of the set of plates
where the latter have their greatest inclination to the radius of the drum, and another
portion passes out into that part of the set (at the bends) where the plates run in the
direction of the radius. The liquid escaping at the latter points is conducted
downwards by the plates (or upwards, if the plates are situated reversely to what is
shewn in the drawing) to the outlets for the heavier liquid, which outlets I, partly
hollowed out of the edge of the cover F G and partly formed by tubes, issue from the
portions of the edges of the plates, which are located between the bends. The liquid
having entered at the bends of the plates, therefore is guided in a satisfactory manner
inwards towards the centre and outwards towards the periphery along the plate
sections which are inclined in relation to the radius of the drum and which the
respective particles of liquid must encounter in their course. The path which the
particles, thus conducted, have to traverse before arriving at the outlet may be
prolonged by preventing inlet of the liquid at the edges which are situated at right
angles to the bends of the plates.
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 :-
In centrifugal separators for liquids, the arrangement of partitions for facilitating
the separation, consisting of annular plates (D) which are bent angularly along one
diameter and brought together with their angles placed in one another, the plates
being so located in the separating drum, concentrically to its axis, that the portions
of the edge of each plate which lie at each side of the bend are situated at the outlets
for the heavier liquid.
2. The construction of separator shewn on the drawing.
Dated this Sixth day of May 1897.
JENSEN & SON,
77 Chancery Lane, London, W.C., Patent Agents.