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Патент USA US2123185

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July 12, 1938.
y J. la.y ELLIOT Er ÀL
APPARATUS FOR MIXING FLÃUIDS
v .y 2,123,185
,
Filed May 18, l9?35
ÑZTORNEY
Patented July 12, 1938
i Y y
2,123,185;
UNITED STATES PATENT oFFicE
APPARATUS FOR MIXING FLUIDS
Jefferson B. Elliot and Fritz Klaeden,`
San Antonio, Tex.
’
` l
t
Application May 1s, 1935, serial Ne. 22,179
3 claims.
(ci. 21o-_40)
(Granted under the act of Maren 3, 1883; as
amended April 30, 1928; 370 O. G. 757)
This invention described herein may be manufactured and used by or for the Government for
governmental purposes, without the payment to
us of any royalty thereon.
Ul
This invention relates to an apparatus for the
introduction of foreign fluids into another fluid,
adapted to be connected. Suspended within the
more particularly it is directed to an apparatus
body portion (I) is a centrally located longi
of this character for introducing into water un-
tudinally
10
> liquid
der pressure,
miscibleflowing
therewith
in awater
for thesystem,
purpose
a foreign
of re-
moving scale, rust or sediment therefrom, or
for purifying the water in said system, also for
introducing a liquid into steam or air `under
p pressure, and for introducing one chemical into
15 another chemical ñowing'in a chemical system
for the purpose of obtaining a controlled mixture,
`
l2()
`25
30
35
40
shaped end member (3) threadably connected
thereto. The frusto-conical bell shaped members
(3) are provided with a boss (4) on their outer
ends to which inlet and outlet pipes (5) and (6)
respectively, of a ñuid distributing system, are 5f
One of the objects of the invention is to provide
an improved valve which is so constructed that a
ñuid flowing through said valve will cause an-other fluid to be introduced into the first mentioned ñuid.
Another object of the invention is to provide
an apparatus for introducing a foreign fluid
into a liquid system including an improved valve
for causing said fluid to be introduced into said
system, said valve including means for controlling the amount of foreign fluid to be introduced into said system.
With the above and other objects in view, the
invention consists in certain novel details of
construction, combination and arrangement of
parts, to be hereinafter more fully described and
speciñcally pointed out in the claims.
`In describing the invention in detail reference is had to the accompanying drawing, forrning a part of this specification, and wherein like
numerals of reference indicate corresponding
parts throughout the several views, in which-
Fig. 1 is a front elevation of the apparatus
with the improved valve thereof shown in section, and
~
Fig. 2 is a side elevation of the apparatus with
parts of the valve broken away.
45
In the illustrated embodiment characterizing
the invention A indicates generally the improved
valve for causing a predetermined quantity of
foreign fluid to be introduced into a, Confined
stream of fluid such as water which is under
50 pressure and B indicates a container which may
be provided for the foreign fluid to be introduced
into the ñuid stream by said valve.
The valve A comprises a body portion (I)
provided with a flange (2) on each side thereof,
`55 having a hollow substantially frusto-conical bell
extending
torpedo-shaped
pendant
middle
memberportion
('I) which
and of
is apartially
smaller circular
diameteratthan
its l0
the inner circular surface (8) of the body por
tion (I) for a purpose which will hereinafter
appear.
The torpedo-shaped pendant member ('I) is
`
formed integrally with a centrally depending 155
portion or member (I0) whereby a partial an
nular enlarged area (li’) is provided at the inid
dle portion of the valve and is provided with a
pointed end portion (I I) which is substantially
conical-shaped and a blunted end portion (I2)
of a frusto-conical shape, The pointed end por
tion (I I) is formed with reversed curves to sub
stantially conform to the inner curvature of the
bell shaped end member (3) to which the inlet
pipe (5) is connected Vthereby providing an arInular area (9) which gradually increases in its
circumferential area from adjacent to the inlet
side of the valve to the enlarged area (9') in
which it is in alignment and the blunted end
portieri (I3) iS 0f a greater length than Said
pointed end portion and is curved outwardly
thereby providing an annular area (I3) which
gradually decreases in cross-section from the en
larged area (5') in which it is in alignment to a
point (I4)of greatest restriction or the least crosssectional area at its outer end adjacent to the
Outlet side of the valve. These areas ‘(9), (9')
and (i3) provide a Continuous paSSageWay fOr
the fluid under pressure flûwillg ÜhrOllgh the
va1ve,the said passageway beine annular except
at the middle portion of the valve, where it is
only partially annular. By this construction the
Stream. ol’ fluid flowing through the Valve iS
caused to be confined to a path which is cylin
drical except Where the Supporting member (l0)
fOr the pendant (I) clases a part of the cylin
drical path, the Said path inßluding the gradu
ated enlarged area (9) and the area (I3) which
is decreasingly graduated to the point of
greatest restriction. A passage I5 is provided
in the blunted end portion (I2) which leads
inwardly from the center at the outer end there
of in an upward direction into a bushing (I6)
mounted in a central bore (I'I).
The upper end of the bushing (I6) is thread-
20
25
30
35
4b
45
50
55
2
2,123,185
ably connected to the `upper end of the bore (Il)
and has a flange (I8) provided thereon for the
application of a wrench, and the lower end there
of is closed except for an aperture (I9) pro
vided adjacent the inner end of the passage (I5)
and a valve opening (I9’) which is adjacent the
inner end of a passage (29) which leads out
wardly from the lower end of the bore (I'I) into
high velocity at the point (I4) of greatest re
striction and a reduction in the water pressure
and a vacuum is created by the greatly increased
velocity of the water through the restricted area
(I4) (Venturi principle) which is at the point
where the foreign fluid enters the water stream
from the outer end of the passage (I5) provided
in the blunted end portion (I2) of the pendant
piping (23) being suitably connected to the lower
member ('I). Should the water flow stop, the
flow of the foreign fluid therein would also stop,
the check valve (28) stopping any back flow as
end of the container B for the foreign fluid,
whereby fluid in the container is adapted to enter
by eliminating the possibility of water entering
a tapped opening (2l) to which one end (22) of
10 piping (23) is connected, the other end of said
the pressure of the water builds up again, there
the valve A through the passage (20) through ' the fluid container B. By this construction no
pressure is required on the fluid in the container 15
15 the valve opening (I9') into the lower end of
the bushing (I6) and thence through the aper
ture (I9) into the passage (I5), leaving at the
outer end of the blunted portion (I2) of the
pendant member ('I) where it is adapted to en
20 ter the liquid stream flowing through said valve.
rIì‘he amount of foreign fluid entering the valve
25 ~
to force the fluid into the valve. The action of
the valve is strictly the Venturi principle wherein
the pressure of the liquid in the main conduit due
to its construction creates a great reduction in
the initial pressure and also a vacuum at the 20
point of greatest restriction, thereby allowing the
A is under the accurate control of a needle Valve
fluid in the container to flow into the valve under
(24) which is mounted on the valve body (I),
between the passages (I5) and (29) and thread
ably connected to a packing gland (25) the lower
its own static head or even be drawn into the
end of the needle valve (24) cooperating with the
valve opening (I 9) on the lower closed end of the
bushing (I6). The packing gland (25) is in the
form of a stud and has one of its ends thread
ably connected in the upper end of the bushing
(I6) and is provided with a packing cap (26) on
the other end thereof.
The container B for the foreign liquid which is
preferably made of glass is suitably connected to
the other end of the piping (23) and is mounted
within a holder (21) .
A suitable check valve (28)
is provided in the piping (23) to prevent back
flow. ïn order to show the amount of flow to be
controlled by the valve A the glass container B
is provided with a graduated scale (29). An ap
erture (39) is provided in the holder (21) for
viewing the liquid in the glass container B.
When the device is employed for introducing a
fluid such as air into liquid under pressure, the
container B may be dispensed with and the de
vice opened to the atmosphere through the check
valve (28).
In operation, after the pressure and flow of the
liquid such as water flowing in the system is
determined at the point where valve A is to be
installed therein, the amount of foreign iiuid
required te be introduced into the water is then
calculated for the maximum water flow through
the valve. The needle valve (24) is then ad
justed and set -for the amount of foreign fluid to
introduced in the system. The water enter
ing the valve A through the end member (3) to
which the inlet pipe (5) is connected is caused
by the pointed end portion (I I) of the pendant
member ('I) to enter the increasingly graduated
annular portion (9) of the passageway for the
fluid as indicated by the arrows, and to flow into
the partial annular enlarged area (9') whereby
the volume of the fluid is greatly increased and
65 thence through the decreasingly graduated area
(I3) to the point (I4) of greatest restriction
where it enters the outlet pipe (6) of the water
system which leads to utilization points there
fore. At the point (I4) of greatest restriction,
70 this area may be made variable for obtaining
high velocities from different initial pressures of
the fluid in the conduit. As long as the water
flows through the valve, fast or slow, the initial
pressure of the fluid flowing in the conduit act
75 ing upon the enlarged area (9') creates a very
valve by the vacuum. This last feature however,
depends upon the variable vacuum created by the
variable initial pressure; in other words, the
greater the initial pressure the greater the vac
uum will be developed.
It will thus be seen that there is provided a
highly novel and useful form of valve, which is 30
well adapted for all the purposes designated, even
though it has been described as comprising cer
tain details of construction, it is nevertheless to
be understood that various changes may be made
without departing from the spirit or scope of the 35
invention.
Having described our invention, what we claim
as new and wish to secure by Letters Patent is:
1. A valve for the introduction of a fluid into
a stream of a second fluid under pressure adapted 40
to flow through said valve, comprising a substan
tial hollow body portion having an inlet and out
let provided thereon, a centrally located member
provided in said body portion, said member hav
ing ends forming a passageway with the inner 45
surface of said body portion for said second fluid,
one of the ends of said member being substan
tially conical-shaped and another thereof being
substantially in the shape of a frustum, the said
conical-shaped end of said member terminating 50
adjacent to the inlet side of said body portion
and the said frustum-shaped end of said mem
ber terminating closely adjacent to the outlet side
of said body portion, a central bore provided in
said body portion and extending into said mem
ber, a bushing provided in said bore', passage
ways for said first mentioned fluid provided in
said body portion and member, one of said last
mentioned passageways leading from the outer
surface of said body portion to said central bore 60
and another of said passageways leading from
said bore to the outer end of said frustum-shaped
end of said member, a valve opening provided
in said bushing and a needle valve between said
last mentioned passageways threadably connect 65
ed to said bushing and adapted to control said
valve opening.
2. An apparatus for the introduction into a
stream of fluid under pressure flowing in a con
duit, of a second fluid miscible therewith, corn 70
prising in combination a valve including an in
let and outlet side and forming a part of said
conduit, a body portion provided on said valve, a
pendant member provided in said body portion,
a passageway for the stream of fluid ñowing 75
2,123,185
through said Valve formed by said pendant mem
ber, said passageway having a graduated enlarged
area, a point of restriction and an area decreas
ingly graduated to said point of restriction, a
central bore provided in said Valve, a bushing in
said bore, an aperture and valve opening in said
bushing, passageways for said second fluid pro
vided in said valve, one of said passageWays lead
ing from the point of restriction of said decreas
10 ingly graduated area to the aperture in said
bushing and another of said passageways lead
ing from said bore to the outer surface of said
valve, a container for said second fluid, piping
connecting said container to said last mentioned
15 passageway, a check valve in said piping and a
needle valve between said last mentioned passage
Ways for controlling said valve opening.
3
3. Apparatus for mixing one fluid with another
under pressure comprising in combination; a cas
ing having a longitudinal annular passage for the
pressure fluid; a chamber for the second fluid
having a conduit leading into the casing; a pend
ant body in the casing projecting into the outlet
end of said annular passage; an outlet passage for
the second fluid extending through said body and
discharging into the pressure fluid, saidv body
being shaped to reduce the cross-section of the 10
stream of the pressure fluid and produce a suc-`
tion or ejector effect at the outlet of the conduit
for the second fluid, and a manually operable
valve to control the flow 0i` the second fluid
through said conduit.
JEFFERSON B. ELLIO-T.
FRITZ KLAEDEN.
15
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