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Патент USA US2124681

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July 26, 1938.
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R. J. JAUCH El' AL
2,124,681
LIQUID D'IsPENs ING APPARATUS
Filed June l5, 1956
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LIQUID DISPENSING APPARATUS
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UNiTEo sauras PATENT 4@FENCE
2,124,681
LIQUrD msruNsINu APPARATUS
Robert J. Jauch and Byron J. Pepper, Fort
Wayne, 1nd., assignors, by meane assignments,
to The Wayne Pump Company, Fort Wayne,
lud., a corporation of Maryland s,
Application June 15, i936, serial' No. 85,290
2o claims. (ci. ros-.113)
This invention pertains to liquid dispensing ap
paratus and pumps to be Aused in connection
therewith, or in connection with installations for
dispensing large quantities of liquid rapidly and
5 eiliciently as in bulk station installations, city
pumping stations, and the like.
It is an object of this invention to provide a
liquid dispensing apparatus wherein entrained air
is separated from .the liquid to be dispensed be
10 fore the apparatus is operable to dispense clear
liquid.
Another object of the invention is to provide a
liquid dispensing apparatus wherein liquid is dis
pensed only after a predetermined pressure is
i5 built up.
Still another object of the invention is to pro
vide a liquid dispensing apparatus adapted to
use a centrifugal pump or other pumping means
but wherein the system is so constructed and ar~
20 ranged that it is self-priming.
Yet another object of the invention is to pro
vide a liquid dispensing apparatus so constructed ’
and arranged that entrained air is separated on
the suction side of the pump.
25
A further object of the invention is to provide
a liquid dispensing apparatus which is self-prim
ing and `one wherein a centrifugal pump may be
used.
.
.
Y
A still further'object of the invention is to
30 provide a liquid dispensing apparatus wherein the
removal of entrained air is effected through use
of an ejector.
'
'
Yet. another object of the invention is to pro
vide a liquid dispensing apparatus wherein en
35 trained air is eliminated through use of an ejector
where the ejector may be controlled after air
elimination. y
. Another furtherA object of the invention is to
provide a liquid dispensing apparatus operable to
40 dispense liquid only after a predetermined pres
sure is built up, but one which is eiïective without
a substantial adjustment regardless of. the litt
of liquid from a source of s pply to the pump of
said apparatus.
45
'
,
`
A different object of the invention is to provide
a pumping unit operable after a predetermined
pressure is built up but remaining operable under
another predetermined pressure.
'
'
A still diiïerent object of the invention- is to
50 provide a centrifugal pump of high eiiiciency and
one in which liquid is not dispensed until after
air or vapor has been eliminated through use of l
of an ejector construction.
With these and various _other objects in View,
55 the invention may consist of certain novel fea
tures oi construction and operation as .will be
i’ully described and particularly pointed out in
the specification, drawings and claims appended
hereto.
In the drawings, which illustrate embodiments 5
of the device and wherein like reference charac
ters are used to designate like parts
Figure 1 is a fragmentary sectional elevation
through one arrangement of liquid dispensing ap
paratux embodying the invention, the same being 10
more or less diagrammatic in its showing;
~ FigureZ is a fragmentary elevation Vof a por
tion of a liquid dispensing apparatus illustrated
in Figure 1 showing a by-pass contrai;
-
Figure 3 is an elevation corresponding to Flg- 1‘5
ure 1 showing a modiiication thereoí;l
j
Figure fi is an enlarged sectional elevation
through a modiñed form of motor driven pump
ing and ejector unit, the same being taken ‘substantially in the plane as indicated by theline 20
4_4 of Figure 5;
_
Figure 5 is an enlarged sectional plan taken
substantially in the plane as indicated by the line
5_5 of Figure 4, and substantially at 90 degrees
to said figure;
25
Figure 6 is an enlarged sectional elevation
taken substantially in the plane as indicated by
the line 6_6 of Figure 6;
Figure '1 is an enlarged top plan view, partly in
section, of the device illustrated in Figure 4, the 30
section being taken substantially in the plane as
indicated by the line 1_1 of Figure 8;
Figure 8 is an enlarged side elevation, partly in
section, of the device illustrated in Figure 4, the
section being taken substantially in the plane as 35
indicated by the line 8_8 of Figure 5;
Figure' 9 is an enlarged sectional elevation cor
responding to Figure 4, the arrangement of parts,
however, being developed in orderto bringl the
various :parts in asingle plane, the section being
taken subsantially in the planes as indicated at
9_9, lio-¿8a and 9a-8a of Figure 5;y
- Figure 10 is an enlarged fragmentary sectional
elevation taken through the impeller, the impeller
collar and the eddy chamber of the pump con
struction illustrated in Figures 4 to 9inc1uslve;
Figure 11 is an enlarged sectional' elevation
through the jet and differential galve construc
tion showing a modiiication thereof for control of
said Jet;
Figure 12 is an enlarged sectional elevation
through the jet and differential valve construc
tion showing another modification thereof for
control of said jet;
I
ì.
Figure 13 is an enlargedl sectional elevation
2, 124,681
2
the usual foot valve (also not shown). The suc
tion line is connected to the inlet side of the
through the jet showing still another modified
form‘of jet control;
-
q'pump 22 which, as shown, is of the centrifugal
responding to that shown in Figure 6, showing yet type adapted to be driven by a suitable motor
controlled by a suitable switch, the switch oper
Qi another modified form of jet control;
ating means preferably being adapted to be dis
Figure 15 is an enlarged sectional elevation cor
Figure 14 is an enlarged sectional elevation cor
posed adjacent a hose support, all as shown in
responding to Figure 6, showing a modified form
said ñrst named application.
The pump 22 is provided with an impeller 24
rotated by the impeller shaft 26 driven by said
motor, the pump being provided with the suction,
of piston and discharge valve control;
Figure 16 is an elevation, partly in section, of a
horizontal type of pump embodying the invention,
the section being taken substantially in the
planes as indicated by the line I6---|6 of Figure
10
15
sump or eddy chamber 28 on the suction or inlet
side thereof which communicates with the center
of the impeller 24. On the outlet side of the
pumpthere is provided a discharge or impeller
chamber 30, said chamber being connected
through the differential valve 32 to the discharge
conduit 34. Said conduit is connected to the in
let side of the meter 36 and the meter being pro
vided with a suitableI meter shaft 31 for oper 20
ating the registering mechanism 38, the meter
shaft rotating proportionately to the amount of
liquid passing through said meter. The outlet
side of the meter is connected through the coa
duit 40 and sight gauge 42 to the discharge hose 25
44, the end of said discharge hose being provided
with a suitable discharge nozzle 46 provided with
the normally closed discharge valve 48 controlled
Figure 17 is a transverse sectional elevation of
the pump illustrated in Figure 16, the section be
ing taken substantially in“ the plane as indicated
by the line I‘I--I'l of Figure 16;
'
Figure i8 is a sectional elevation takensub
stantially on the drive shaftI of the pump shown
in Figure 16, the section being taken substan
tially in the plane as indicated by the line |8-I8
of Figure 17;
Figure 19 is a transverse elevation, partly in sec
tion, of the pump illustrated in Figure 16, the
25 section being taken substantially in the plane as
indicated by the line |9--|8 of Figurevlô;
Figure 20 is an enlarged sectional elevation
through the outlet valve mechanism of the pump
30
by the hand lever'50.>
illustrated in Figure 16;
Figure 2.1 is a sectional elevation through the
drive shaft and impeller, showing the impeller
collar applied thereto;
Ä
`
Figure 22 is a sectional elevation corresponding
to Figure 21 showing the conventional mounting
of the impeller of a centrifugal pump;
Figure 23 is an enlarged sectional elevation
through a modiñed form of valve construction
illustrated in Figures 16 to 20 inclusive;
Figure 24 is a side elevation, partly in section,
40 of yet another modiñed form of horizontal cen
trifugal pump;
,
Figure 25 is a transverse sectional elevation of
the pump illustrated in Figure 24, the same being
taken through the float and eddy chambers;
Figure 26 is a transverse sectional elevation of
the pump illustrated in Figure 24, the same being
taken through the outlet check valve, the suction
and eddy chambers, and the inlet;-
A
Figure 27 is an enlarged sectional elevation
through the check valve assembly illustrated in
Figure 26;
’
Figure 28 is a fragmentary sectional elevation
corresponding to Figure 24, showing modifications
An ejector conduit 52 extends within the suc
tion chamber 28 having communication there
with adjacent the top thereof through the aper
ture 54, the inner end 56 of said conduit ter
minating adjacent the center of the impeller.
The conduit 52 is provided with the one-way
check valve 58 preventing return flow to the cen
ter of the impeller, said check valve in the modifi-y
cation shown in Figure 1 being connected through
the pipe 60 to the throttle orifice 62 disposed ad
jacent the ejector 64. The jet conduit 66 ex
tends into the discharge chamber 30 and may
be provided with an aperture adjacent the top
of said chamber as at 68. The conduit 66 is like
wise connected to the ejector 64, the ejector jet
'I0 being in communication with the conduit 66.
The jet is of the Venturi type and extends toward
30
35
40
45
the ejector tube 12, likewise in communication
with the throttle orifice 62, the tube being con
nected through the conduit 14 to the air separa
tor or float chamber 16 which is vented to the at 50
mosphere through the vent pipe 18 extending to
a high point in the liquid dispensing apparatus.
The float chamber 16 is provided with the float
80> connected to one end of the dead lever 82, the
`
other end of said lever being connected as at 84 to
Figure 29 is an end elevation, partly in section, a suitable bracket 86 provided in the air separa
of another modified form of pump construction.. tor, said lever being provided with the float valve
embodying the invention, the section being taken 88 adapted to control the float return 80. AThe
through the check valve and jet chamber;
.
Figure 30 is an'enlarged sectional elevation of float return is connected through the conduit 82 60
the suction chamber 28 of the pump.
the check valve assembly illustrated in Figure 29. to The
differential valve 32 consists essentially of
Referring first of all more particularly to the the valve chamber 94 within which is disposed
forms of construction illustrated in Figures 1 to 3 the valve member 96, the upper end of said mem
inclusive, it is of course to be understoodthat in ber being provided with the valve disc 98 adapted
these and subsequent forms where the pump is to have seating engagement with the valve seat
used in a liquid dispensing apparatus, said ap
|00. The lower valve disc |02 is of larger diame
paratus is adapted to be provided with a suitable ter
than the valve disc 98 and the valve mem
casing, such as illustrated in application Serial
ber is normally urged to closed position bythe
No. 2,282, filed January 17, 1935, and a meter spring |04. In order to obviate the necessity
similar to that illustrated in application Serial
No. 85,426, filed June l5, 1936, may be used t0 for an adjustment or for the use of different
drive registering mechanism such as shown in springs |04 for different lifts of installation, an
application Serial No. 628,868, filed August 15, equalizer conduit |06 is connected as at |08 to the
valve-housing 94 below the- valve disc |02, the
1932. The suction line 20 is adapted to be con
nected to a suitable source of supply (not shown), opposite end of said equalizer conduit |06 being 75
connected as at ||0 to the suction line 20.
75 the end of the suction line being provided with
thereof;
2,124,681
In the operation of this form of the device,
assuming that the liquid dispensing apparatus
CFI
is dry, liquid is poured into the float chamber '|6
until the float 80 lifts the valve 88 and permits
liquid to flow through the connection 92 into the
suction chamber 28, or liquid may be supplied
directly to the suction chamber 28. 'I'he pump
is primed to such an extent that liquid passes
into the discharge chamber and starts to fill
10 up the periphery of the impeller 24. 'I'he switch
is then closed to start the motor which causes ro
tation of the shaft 26 and the impeller 24. Rota
tion of the impeller produces a pressure in the
discharge chamber 22 causing liquid to flow
through the conduit 66 and through the ejector
64 to the vconnection 14 and into the ñoat cham
ber 16.
The action of the jet 10 of the ejector causes
Withdrawal of the air from the pump through the
ejector conduit 52f, this conduit drawing air
through its inner end adjacent the impeller and
through aperture 54. Continued rotation of the
impeller acts upon the liquid in the pump to cause
it to pass continually through the jet conduit 66
and thence through the jet l0 of ejector 64 and
creates sufficient vacuum to slowly draw' the
liquid through the suction line 20 from the
source of supply. While this priming action is
being accomplished no liquid is being discharged
through the discharge conduit 34, as the differ
ential valve 96 remains closed having-been set
to open only at a predetermined pressure, which
pressure cannot bebuilt up for so long as any air
is present in the system. After suiìcient pres
sure is generated to open the differential value
96, and this pressure can only be reached when
the impeller and suction chamber are entirely
3
however a sylphon or expansible bellows H2 is
connected to the discharge pipe 34 and con
trolled by the pressure of the liquid passing
-through the discharge pipe. The sylphon is op
eratively connected as at ||4 to the valve lever
||6 of the valve || 8 disposed in the jet conduit
66. Before the differential valve 96 is opened by
the~ predetermined pressure of the liquid deliv
eredbythe impeller, the valve I |8 is fully opened
and the system operates as described above. Af 10
ter the differential valve has been opened and
liquid is being dispensed, the pressure of said
liquid causes operation of the sylphon ||2 to
either close the valve to render the jet conduit
inoperative, or it may be set to merely throttle 15
the jet conduit to reduce theamount of liquid
circulated or by-passed through the ejector.
In the construction illustrated in Figure 3, the
one-way check valve |20 is disposed in the ejector
conduit 52 in place of the check valve 58. The 20
throttling orifice |22 is disposed -adjacent the
check valve |20 instead of adjacent the ejector 6,4,
and a conduit |24 is connected to the pipe 60
as at |26 between the throttling orifice and the
ejector, the other end of said conduit |24 being 25
connected as at |28 to the differential Valve hous
ing 94 below the differential valve 96. This con
nection replaces the connection |08 in the modi
ñcation illustrated in Figure 1. A sylphon |30
communicates with the conduit 60 adjacent the 30
throttling orifice |22 and said sylphon is opera
tively connected as at |32 to the operating lever
|34 of the throttling valve |36 provided in the
jet conduit 66.
f
In the operation of this form of the device, be
35
fore the diñerential valve 96 is opened, the
throttling valve |36 is in full open position so that
filled with liquid, the liquid passes through dis
the system functions exactly as has been' de
charge pipe 34, meter 36 and then is discharged scribed with respect to the modification illus
through the conduit 40, visi-,gauge 42, hose 44 trated in Figure l. When, however, the differ
and through the nozzle 46, it being understood ential valve 96 is opened by building up the 40
that the nozzle valve is in open position.
predetermined pressure, the sylphon |30 is oper
Passage of liquid through the meter causes the ated to partly close the valve |36 to cause throt
meter to operate the register to indicate the tling action of said valve, thus decreasing the
quantity of liquid dispensed and preferably the amount of liquid by-Dassed through the jet
price thereof. The differential valve having once conduit 66, float chamber 16 and return conduit
been opened, the full area of the disc |02 becomes
effective and the equalized suction, due to the
Referring now more particularly-to the form
92.
connection |06, maintains the valve in a constant
open position. During the operation of the
pump the ejector continues to operate even after
the system is cleared of air. Any vaporization due
to heat or agitation, or any air due to leaks into
Cn L:
the system, will be drawn through the ejector and
expelled into the air separator, where it is vented
through the vent pipe 18 so that there will be no
discrepancies between the amount of liquid
measured and the amount of liquid dispensed.
However, if the installation has not been prop
erly made, or if more air leaks into the system
than the jet can expel, the pump will not produce
enough vacuum to draw liquid from the source of
supply. If a leak should develop after installa
tion and the liquid in the suction chamber should
fall below the center of the impeller, the drop
in vacuum together with the reduction of cen
trifugal yaction will cause the spring |04 to close
the differential valve 96 against the pressure of
the liquid in the discharge side of the pump be
fore any air is admitted to the meter. This ac
tion would also occur if the source of supply
should become empty.
In the construction shown in Figure 2, the same
liquid'dispensing apparatus is contemplated as
that illustrated in Figure 1. In this construction l
`
~
of construction illustrated in Figures 4 to 10 in
clusive, the suction line |40, corresponding to the 50
suction line 20, is connected through the fitting
|42 to the casing |44 as a't |46, the fitting includ
ing a strainer |41 therein. The suction line com
municates with the suction chamber |48 through
the suction opening |50, said suction chamber be 55
ing provided with the upstanding baffle |52 for
maintaining a predetermined liquid height in the
'pump casing when the pump is inoperative. The
suction chamber |48 communicates with the eddy
chamber |54 through the passage |56, the eddy 60
chamber being in communication with the center
of the impeller |58 mounted in the impeller cham
ber |60, said chamber being closed by means of
the end‘cover plate |62 secured as at |64 to the
casing |44.
v
'
'
The impeller |58 is horizontally disposed and is
65
mounted on the impeller shaft |66, said shaft
being supported at the lower end on the thrust
bearing |68 fastened by the end plate |10 secured
as at |12 to the cover plate |62. In order to pre 70
vent the impeller from becoming air bound, as will
be more particularly discussed, the lower wall |63
of the eddy chamber |54 is provided with an 1m
peller collar |65 secured to said' wall and extend
ing upwardly and provided with the inwardly di 76
4
2,124,681.
rected ilange |61, Figure 10, overlying the top- or
inlet rim of the impeller |68. The collar is pro
vided with an internal angular groove |69 hav
ing radial holes |1| provided therein, communi- eating with the eddy chamber |54.
With this construction any upward surge of
liquid between the impeller and the impeller collar
is broken by the groove |69 so that very little
10
liquid is supplied past the flange |61, most of this
liquid being trapped and ñowlng gently outwardly
through the apertures |1| so that there will be no
wall of liquid pumped into the eddy chamber to
prevent iiow of liquid from the eddy chamber into
the impeller, which lwall would, of course, cause
the impeller to become air bound and conse
quently the pump inoperative.
'
The vertically extending impeller shaft |66 ex
tends through the stuiling box |14 and is secured
by the driving connection |16 to the vertically
20 extending motor shaft |16 adapted to be driven
by the motor |18, said motor being suitably se
cured as at |80 to supporting means fastened
within the liquid dispensing apparatus casing.
It is understood of course that the motor iscon
25 trolled by a suitable switch as illustrated in the
first named of the above identiñed applications.
The impeller chamber |60 is provided with the
Venturi jet |82 extending into the jet chamber
| 84, said jet being in alignment with the ejector
tube |86 which communicates with the ejector
line or passage |88, saidpassage communicating
with the iloat or settling chamber |90. 'I‘he jet
and ejector tube therefore form ejecting means
for the jet chamber.
In order to prevent leakage from the iloatv
35
chamber, the shafts |66 and |16 are provided with
a tight sleeve |9| for maintaining the shafts in
alignment and for guiding the motor shaft, and
a suitable packing such as a felt seal ring for ex
clusion of dust or dirt is provided in the pocket
|93 disposed in the upper portion of the pump
casing. The stuillng box |14 may include the
gland and leather retainer |96 threaded as at
|91 and |99 for the reception of the nuts 20| and
203, said nuts forming securing means for the
outwardly extending -ilanges of the leathers 206
and 201, the free or axially disposed ñanges of
adapted to be suitably connected to the discharge
pipe leading tothe meter corresponding to pipe
34. 'I‘he valve seat 202 is adapted to be closed
by the valve disc .206 of the differential outlet
valve 208, the upper disc 2|0 of said differential
valve separating the jet chamber |84 and the im
peller chamber |60 and said diilerential valve is
normally urged toward closed position by means
of the coil spring 2|2 embracing the valve stem
2 |4 which is guidably mounted in the cap 2| 6.
In order to complete the communicating means
necessary to completely exhaust air and vapor
from the casing |44, the jet chamber is connected
through oriiice 2|8 with the passage 220, said
passage in turn being connected to the suction
chamber |48 through oriñce 222 and to the eddy
chamber |64 through the passage 223. Thus the
ejector is eiïective throughout the entire casing.
In operation of this form of the device, assum
ing the liquid dispensing apparatus to be inopera
tive, liquid will not drain back from the pump'
casing |44 through the suction opening |50 be
low a level determined by the baille |52, the baille
acting as a trap so that the impeller |58 will
always be submerged. Upon starting the motor,
rotation of the shaft |66 by the shalt |16
generates a force by means o! the centrifu
gal action of the impeller, building up a
pressure in _the impeller chamber |60. Liquid
flows throughthe jet |82 and is replaced by the
reserve liquid in the eddy chamber. The action
of the jet upon the
and vapor in the jet
chamber |94 causes t to be drawn out with
the streamy of liquid passing through the ejector
tube |66, producing a partial vacuum in the jet
chamber |84 drawing air from the suction cham
ber through passage 220 and from the eddy
chamber through passage |66.
The air and liquid will pass through the ejec
tor line |89 intothe iloat chamber |90 where 40
the air will be separated from the liquid and will
pass outwardly of the pump through the vent
|92. The clear or solid liquid will then pass
through the iloat return |98 to the eddy cham
ber |64. When the air in the suction and eddy 45
chambers has been replaced by liquid from the
ñoat chamber |90, the valve |94 throttles due to
said leathers being spring pressed against the _ the drop oi' the liquid in the iloat chamber |90.
sleeve |9| by means oi' the' springs 209 and 2||. The Vvalve preferably does not close entirely al- _
though the clearance of the swinging valve |94 50
50 In order to maintain the seal around the sleeve and its adjacent seat is so small that the amount
|9| and to prevent leakage oi liquid’from the
casing, the gland |96 is provided with the axially of liquid passing through will not take care of
extending channels 2|3 disposed between the the displacement produced by the ejector. The
leathers 206 and 201 whereby liquid entering the vacuum thus produced draws liquid through the
suction line from the source of liquid supply to 55
55 channels will tend to seal the axially disposed
leather flanges against said sleeve, and any leal:-V the suction chamber |48. When air has been
age through the packing or leather 201 willl cause entirely removed from the suction chamber and `
clear liquid passes through the ejector, the vac
liquid to be drawn into the _suction chamber in
uum in the jet chamber |84 is increased to such
stead of air.
Y
f
The float chamber |90 is provided with the an extent that the action of the pressure in the 60
60
vent |92 extending to a high point >in the liquid impeller chamber |60, in addition to the vacuum
-dispensing apparatus for releasing the separated in thejet chamber |84, causes upward movement
air from the iloat chamber and consequently from of the diil'erential valve208 against the ,action
the pump. A float valve |94 is pivotally mounted of the spring 2|2 and allows liquid to flow from
05 as at |96 in the iloat chamber and is adapted to the impeller chamber |60 to the discharge cham
control the iloat return |98, said float- return be
`ber 204 and thence outwardly to the meter.
ing in communication with the eddy chamber
Due to the use of the differential valve, the `
|54. The valve |94 is a throttling valve and is
valve will open at a higher pressure than that
only in closed position when the ñoat 200 is sub
at which it closes so that it can be made to open 70
70 stantially in the horizontal position, that is, when 'only when air is entirely eliminated, but will con
the liquid inJthe iioat chamber has reached a
tinue to operate without halting should a con
predetermined level.
~
The outlet valve seat 202 is disposed between siderable portion _of entrapped vapor wash up out
the impeller chamber |60 and the discharge of the suction line, in which case the delivery
from the pump will be diminished, and the jet 'nsA
75 chamber 294, said 4discharge chamber being
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