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Патент USA US3092382

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June 4, 1963
Filed Feb. 23. 1960
Johannes B-VN/ DER Mil/DENIBY
Patented June 4, 1963
driven by an eccentric connecting rod mechanism 7 driven
\by a common driving shaft 8.
The pumping chambers 2 discharge into a common
Johannes B. van der Winden, Nieuweramstel, Netherlands,
assignor to Gehr. Stork & Co’s Apparatenfabriek N.V.,
Amsterdam, Netherlands, a corporation of the Nether
pressure chamber 9, in which the homogenizing member
Filed Feb. 23, 1960, Ser. No. 10,151
Claims priority, application Netherlands Feb. 23, 1959
2 Claims. (Cl. 259-—98)
is mounted. Said homogenizing member comprises a
stationary bored seat 10 connected to a discharge conduit
11 and a follower 12 which is axially and rotatably jour
nalled in the ‘frame 1. The abutting ends of the seat 10
and the follower 12 have a reduced external diameter so
10 that oppositely directed thrust faces 13 and 14 are formed
in such a manner that when a predetermined pressure in
This invention relates to a homogenizer meant for com
rninuting the particles in an emulsion, e.g., the fat globules
in milk, and comprising a homogenizing member com
the ‘pressure chamber 9 is reached the follower 12 will
axially move away from the seat so that a narrow slit
will form between the seat and the follower, through
operating with said seat, which follower is kept urged 15 which slit the emulsion ‘will be forced under a very high
pressure and at a very high speed and it is this feature on
against said seat under a controllable pressure, the pres
which the homogenizing action of the homogenizer is
sure exerted by the liquid to be homogenized forming a
prising a seat having a bore therein and a follower co
The pressure in the pressure chamber 9 at which the
sage therethrough of the emulsion to be homogenized.
=In the conventional homogenizers of the type in ques 20 slit between the seat 10 and the follower 12 will form
depends on the pressure by means of which the follower
tion the follower is mechanically kept urged against the
narrow slit between the seat and the follower ‘for the pas
seat by an adjustable force exerted by a spring or a
12 is kept urged against the seat 10. Pressure is applied
weight. The construction used for homogenizers of this
type has various disadvantages, the main disadvantages
hydraulic cylinder 17. The piston 16 is coupled to fol
to the follower 12 by a piston 16 which is mounted in a
being the great wear and tear of essential parts, the dim 25 lower 12 by a removable coupling member 15 which is
non-rotatably coupled to both the piston 16 and the fol
cult and time-consuming removal and/or replacement of
lower 12. The hydraulic cylinder 17 which contains a
the follower, which is periodically necessary. Moreover
weak compression spring 18 in order to keep the follower
the pressure by means of which the follower is kept urged
12 urged against the seat with a slight force via the piston
against the seat by an adjustable spring is diiiicult to con
30 16 and the coupling member 15, is connected to a pump
trol and therefore unreliable.
26 by a conduit 19, said pump being fed from an oil bath
The object of this invention is to avoid said disadvan
tages by an improved construction of a homogenizer of
this type.
To achieve this end according to the invention the
homogenizer is characterized in that the follower is
coupled with the piston of a hydraulic cylinder provided
Furthermore, a pressure gauge 22 and a throttling
member 23 are connected to the cylinder 17, said throt
tling member discharging in the oil bath 21, the oil thus
discharged being at the same time utilized for lubricating
the driving mechanism 7, 3.
Because the throttling member 23 admits of being ac
with an adjustable throttling means. According to an
curately adjusted it is possible in view of the speci?c ratio
other feature of the invention the coupling between the
between the operative areas of the piston 16 and the thrust
follower and the piston of the hydraulic cylinder may con
face 13 of the follower 12 to exactly ascertain by reading
sist of a coupling member adapted to be interposed ‘be
the pressure gauge 22 at what pressure in the pressure
tween said piston and said follower and to be removed
chamber 9 the slit between the seat 10 and the follower
in opposition to a weak spring acting on said piston.
According to a further feature of the invention the
follower may be so connected via the coupling and the
12 will open. The pressure on said pressure ‘gauge, there
fore, has a fixed relationship to the pressure in the cham
in which the pressure with which the follower is kept
pawl and ratchet gear 25 is rotated stepwise by an arm
26 which has its one end carrying a roller kept into con
tact with one of the connecting rods 7, the follower 12 is
kept rotating in order to make it wear evenly.
piston with the mechanism driving the pressure plunger(s) 45 ber 9, so that it is not necessary to connect a pressure
gauge to said pressure chamber 9, which makes for a
of the homogenizer that said follower is stepwise rotated
hygienic operation of the homogenizer.
about its axis.
By providing the piston 16 with a rod 24 which via a
By applying the invention a homogenizer is obtained
urged against its seat admits of being accurately adjusted
in a simple manner. Furthermore the coupling member
and thus the follower and the seat may be removed very
-When the homogenizer is inoperative it is sufficient for
the follower 12 to axially move the coupling
the abutting surfaces of the follower and the seat are kept
trued relative to each other, so that it is only seldom 55 member 15 in opposition to the spring 18 and to subse
quently remove said member, whereupon the follower 12
necessary to true the follower and the seat.
becomes accessible while also the seat 10 may be removed.
‘An embodiment of the homogenizer will be described
it will be clear that the principle according to the in
hereinafter for elucidating the invention, reference being
vention admits of structural variants of the embodiment
made to the accompanying drawing, in which:
FIGURE 1 is a vertical longitudinal section of the 60 described. More particularly it is possible to so con
struct the homogenizer that the direction of flow through
the slit in the homogenizing member is directed radially
FIGURE 2 is a showing in perspective of the homoge
outwards instead of radially inwards.
nizing member (partly cut away);
I claim:
FIGURE 3 is a showing in perspective of the driving
1. An emulsion homogenizer comprising a casing hav
mechanism of the press pumps belonging to the homoge 65
ing a homogenizing chamber therein, an annular homoge
easily. By the measure of rotating the follower stepwise
nizing member having a seat on one end thereof and
According to the drawing the homogenizer comprises
being stationarily mounted in said chamber, said casing
a frame 1 provided with a number of pump chambers 2,
having an outlet opening therein through which said an
each having a suction valve 3, a delivery valve 4 and a
plunger 5 of its own, all of said chambers being con 70 nular homogenizing member opens, a follower slidable
in said casing in alignment with said ‘homogenizing mem_
nected to a common supply conduit 6 for the emulsion
to be homogenized. The pressure plungers 5 are each
her and bearing against said seat, said follower being mov
able away from said seat'under liquid pressure in said
chamber exerted on said follower, a counter pressure
with said pressure transmitting member and said follower,
and said pressure transmitting member has means at
exerting means mounted on said casing in spaced relation-_
tached thereto for rotating said pressure transmitting
ship thereto and including an axially movable pressure
member, said coupling member and said ‘follower periodi
transmitting member, a removable coupling member be; 5 cally.
tween said pressure transmitting member and said fol
lower, and weak spring means in said pressure exerting
References Cited in the ?le of this patent
means urging said pressure transmitting member toward
said coupling member with a force only su?icient to hold
said follower on the seat of said homogenizing member
.Bither ________________ __ Aug. 3, 1909
when no liquid pressure in said chamber is exerted on said
Buck ________________ _._ NOV. 23, 1920
follower, whereby, when no hydraulic pressure is exerted
on said pressure transmitting member, said coupling mem
ber can be removed by moving it against said spring
means for separating it from said follower, and said fol 15
lower ean be slid out of said casing.
2. An emulsion homogenizer as claimed in claim 1 in
Colony ______________ __ Apr. 29,
Grear ________________ _._ May 3,
Swenson ____________ .. May 25,
.Colony ______________ __ Nov. 20,
'Suthard et a1 __________ __ Oct. 31,
Rees ________________ __ Apr. 29,
Rees ________________ __ Sept. 16,
which said coupling member is non-rotatably coupled
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