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Патент USA US3083733

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Aprll 2, 1963
R. E. SCHULZE ETAL
3,083,728
FOUR-STAGE AUTOMATIC VALVE FOR A WATER
SOFTENER OR CONDITIONER
Filed May 16. 1960
5 Sheets-Sheet 1
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April 2, 1963
Filed May 16. 1960
R. E. SCHULZE ETAL
FOUR-STAGE AUTOMATIC VALVE FOR A WATER
SOFTENER OR CONDITIONER
3,083 ,728
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rApril 2, 1963
Filed May 16. 1960
R. E. SCHULZE ETAL
3,083,728
FOUR-STAGE AUTOMATIC VALVE FOR A WATER
SOFTENER OR CONDITIONER
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nited States Patent 0 ice
Patented Apr. 2, 19%3
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terminates in a single drain passage.
3,083 728
F-GUR-STAGE AUTSi?viATElC VALVE F'QR A W
SGFTENER
CGNDETEGNEK
Robert E. E-ehulze, Deeriieid, and
A. Merri n,
Highiand Park, ill, assign-are to ?niiigan, inc, North
brook, 111., a corporation 0? Deiaware
May is,
12 Claims.
29,4'7h
(G. l37?5%9.1)
A flow control
member is present in the by-pass conduit to regulate the
backwash ?ow rate.
The present invention further comprehends a novel
valve assembly in the bypass drain conduit to control the
iquid ?ow through the two drain lines. Thus, when the
backwash stage is in operation, the backwash water will
force the valve in one direction to allow the backwash
water to escape through the drain passage. When re
generation and rinse occur and liquid tends to pass through
both outlet ports, the valve member tends to keep the
drain port used for backwashing closed and allows the
novel valve combination and assembly for controlling the
brine and rinse water to exit through the other drain port,
direction of liquid ?ow in automatic water softeners or
thus effecting a down?ow brine and rinse.
conditioners during normal service, backwash and reac
The present invention also comprehends a novel eductor
tivation or regeneration.
assembly which is separate from both valve units and has
In the co-pending application Serial No. 731,359, ?led
a separate inlet leading into the tank. This eductor as
April 28, 1958, which has matured into Patent No. 3,006,
sembly is normally supported on the valve unit to which
376, a directional valve is disclosed having two parts or
it is connected for the water supply required to operate
haives, one of which is connected to the inlet and the
other to the outlet of a tank. One valve includes a pair 20 the eductor. A flow controller in the eductor controls the
dew rates for brine and rinse operations.
of diaphragms with a port leading to a drain and a sole
Other objects, advantages and features of the present
noid operated port. The other valve contains the eductor
invention include the provision of a fully hydraulic valve
required to feed the salt brine to the tank for regenera
The present invention relates to a novel automatic
water softener or conditioner and more particularly to a
assembly with an automatic by-pass during backwash,
These two valves are connected by a single con
duit, thus eliminating any problems of spacing the valves 25 regeneration and rinse so that a water supply is always
tion.
on the tank.
Due to the valving arrangement of this prior applica
tion, the regeneration cycle for the tank does not provide
the most efficient and effective regeneration of the water
softening or conditioning material.
available in the service line in the home. Further, the
softener tank is isolated from both valves during the brine
stage and, therefore, isolated from the normal hard water
supply line. Also, the solenoid valves merely pass water
In operation, this 30 from the hard water line and do not handle waste brine.
automatic softener gives a downflow service and an up
The valve action is one of a short stroke, thus allowing
?ow backwash, regeneration and rinse. Where, as in this
previous case, a hard water rinse after regeneration is up
how, some of the water softening material at the bottom
of the tank becomes exhausted before the rinsing step is
e?icient operation over a Wide range of pressures.
Further objects are to provide a construction of maxi
mum simplicity, efficiency, economy and ease of assembly
and operation, and such further objects, advantages and
completed. Then, when the tank is placed in service, there
capabilities as will later more fully appear and are in
is an initial hardness leakage due to the exhausted bottom
herently possessed thereby.
layers.
in the drawings:
FiGURE 1 is a view, part in front elevation and part
To overcome this hardness leakage, the brine and rinse
40
in vertical cross section, of a four-stage automatic water
steps should be in a down?ow direction so that the hard
conditioning system embodying the present novel auto
water rinse will tend to partially exhaust a top layer of
the water conditioning material during completion of the
matic control valve assembly shown in front elevation
above the service tank for the automatic control of this
rinsing step. Next to a soft water rinse after brine, the
downflow brine and hard water rinse is the most eficient 45 system.
FIG. 2 is an enlarged View in vertical cross section
procedure for regeneration.
in the present invention, the valve assembly is com
taken longitudinally and centrally through one of the
valve control units shown in front elevation in FIG. 1.
posed of two parts or halves, one being connected to the
FIG. 3 is an exploded view of the valve ?assembly com
inlet and the other to the outlet. As in Patent No.
3,966,37 6, a conduit joins the two valves. However, the 50 bination including the eductor system and the by-pass and
drain system showing the flow pattern for liquid during
structure of the conduit in the present application includes
a. second passage connecting the drain lines coming from
normal service operation.
FIG. 4 is an exploded view of the valve assembly
both valve units and terminating in a single drain. A
valve assembly is inserted in the drain conduit to control
combination showing the positions of the valve and the
the flow of liquid issuing from each of the two drain lines. 55 how pattern for liquid during backwash.
PEG. 5 is an exploded view of the valve assembly
Another important feature of the present invention is
the utilization of a separate eductor system which feeds
combination showing ?the positions of the valves and the
the brine for regeneration and the rinse water into the
?ow pattern of the liquid during the brine and rinse stages
tank through a separate inlet in the top of the tank. In
of operation.
H8. 6 is an enlarged cross-sectional view of the drain
this way, be valve assemblies for the inlet and outlet of
unit to more fully show the structure of the novel check
the tank remain in a less complicated and more trouble
valve.
free condition.
A further important object of the present invention is
Referring more particularly to the disclosure in the
the provision of a novel valve assembly combination
drawings in which is shown an illustrative embodiment
which will effect the desired operational stages of down 65 of the present invention of a directional valve assembly
for controlling the operation of automatic water condi
?ow service, up?ow backwash and down?ow regenera
tion and rinse. The valve assembly is simplified in that
tioners of the type shown in FIG. 1, including a portable
the two parts or halves of the assembly are substantially
service tank 7.6} containing a loose and relatively deep
bed of treating minerals or material 11 disposed upon and
identical, thus greatly simplifying replacement or repair
of the assembly.
76 above a gravel or ?lter bed 12 in the bottom of the tank
Another important object of the present invention is
the provision of a drain conduit in the by-pass unit which
communicates with the drain ports of both valves and
and extending to the desired level or height but shown as
spaced a suitable distance below the top of the tank to
provide a free board space 13 thereabove.
3,083,728
4
a .
The bed of treating minerals or material in the tank
may be a resinous or siliceous ion exchange material or
?lter material which during the water softening or condi
tioning stage removes undesirable constituents or sub
stitutes a sodium ion for the calcium or magnesium ions
found in hard water until the material becomes exhausted
resulting in a decrease in the quality of the ef?uent. In'
the case of ion exchange, when the e?luent is substan
tially hard relative to the hard water entering the tank,
the ion exchange material requires regeneration to re 10
plenish the sodium ions on the material. a
43 and 44 are provided at each end to seal the cap 39
and base 41 to the cylindrical body 38. The ?oat rod
29 carries a conical valve 45 at its lower end, which valve
when elevated seals the upper port or opening 42 by
contacting the gasket 43.
Intermediate the length of the cylindrical member 38
is a transverse partition 46 tapering 0r dished toward
the center and having a centrally disposed opening 47
communicating etween an upper chamber 48 and a lower
chamber 49. A restricted passage 51 offset from the cen
The service tank 10 employed is of the general portable
type provided with a coupling or ?tting 14 whereby the
tank may be quickly installed, removed or' replaced,
when necessary. The'coupling or ?tting 14 is connected
tral opening 4-7 forms a by-pass between the chambers
for ?ow when the central opening is closed.
The valve member 45 has a conical upper surface and
a ?at lower surface, said lower surface being diametrical
ly slotted ?at 52 so that when the valve member 45 is
to an inlet tube or manifold -16 and an outlet tube or
lowered onto the partition 46, liquid will be? permitted to?
manifold 17, respectively. Each tube or manifold de
pends from the connector or ?tting into the tank 10,
the inlet manifold 16 extending into the tank only a few
?ow from the upper chamber 48 to the lower chamber
49 by-passing through the slots 52. In the lower or air
check chamber 49, a ball valve 53 made of plastic or
inches while the outlet manifold 17 extends into and ?
through the ion exchange material and/or into the ?lter
bed 12 terminating adjacent the bottom of the tank 10.
other suitable buoyant composition una?ected by brine
is located so that the ball valve willrseal off the central
opening 46 when in its elevated position and will seal
The inlet manifold 16 is? closed at the bottom and is
oil? passage 54 in the base 41 when in its lowered posi- '
provided with relatively wide slots 18 to permit uninter
tion. The passage 54- communicates with the conduit or
rupted ?ow of untreated water therethrough. The outlet 25 pipe 34 which is suspended in- operative positionin the
manifold 17 is also closed at its lower end and provided
?oat chamber 26 by suitable connecting means 55.
with a ?nely slotted strainer section 19. The tank 10
differs from the normal service unit only in that an
To prevent free rotation of the ball valve 53 and
maintain it in proper position, a depending tall or projec
opening 21 is provided intermediate the inlet and outlet
tion 56 is provided for the ball valve, with? the depending
openings for the eductor 22.
30 tail extending� through the gasket. ?44 and into the bore
When the bed of water conditioning minerals or ma
or- passage 54;
'
terial becomes exhausted and the material requires cleans-.
The salt chamber 25 has a substantial capacity for
ing and/ or regeneration, it is contemplated that the valve
receiving a large quantity of dry rock salt or salt- pellets
assembly of the type here disclosed will accomplish the
and' storing the salt along with a sterilizing agent to sup
regeneration steps automatically and at frequent inter 35 ply the brine requirements for a substantial period of
vals, such as during a predetermined period in the night
time. The wall or partition 27 is provided with an opening
when. treated or softened water is not required in the
57 communicating between the twochambers. The posi
service. line. To accomplish this automatic cycling, a two
tioners 32 and 33 onlthe ?oat rod 29* are adjustable to
circuit adjustable timer is utilized which will not only
vary the quantity of brine used in any one regeneration
initiate the regeneration cycle at a set time period during 40 cycle. By adjusting the height of the ?oat 311 on the
the night, but will also provide separate adjustment for
?oat rod 29, the quantity of water admitted ?through valve
the. backwash
brine operations, depending on the
28 for dissolving salt in chamber 25' to produce brine. is
amount. of sediment in the Water, the amount of salt
varied. A gravel ?bed. 58 is disposed in the bottom of
used, the size of the tank and the volume of the content
chamber 25 to ?lter the brine prior to the exit of the
of ion, exchange material.
45 brine into the ?oat chamber 26 and into the service
To accomplish the brining stage in the regeneration
tank 10.?
cycle, the present automatic water? conditioning system
The novel valve assembly of the present invention for
contemplates a ?oat valve and brine tank assembly of the
directing flow ?of water through the water conditioning
type shown and- described in the pending application of
Robert B, Schnlze and Edmund J., Heartstedt, Serial No.
643~,G43,_?led;March 25,, 1957-, now Patent-No. 2,920,644.
It includes, av ?brine tank; 23. having a removable cover 24
system is more fully shown?. in FIGS. '2 to 6.
end of; the, valve body 28 with its opposite end connected
to a legnth of ?exible tubing 36 leading to the central 65
by a connectingchannel 73.
portion of the eductor 22. A substantially V-shaped guide
member 37 having its diverging legs, anchored onto the
pipe 34 guides. the vertical movementof the ?oat ball
of the central chamber 66 and terminates in a threaded
upper end 75 in the chamber 71. A resilient or rubber
diaphragm 76, has a central portion 77 of. a substantial
thic'knesswhich is secured to ?the valve :stem betweenup
The as
sembly involves two substantially identical valve units,
an? eductor system and ?a by-pass unit having provision
for? the drain line coming from each valve unit. Since
for ?access to the salt chamber 25. A ?oat chamber 26
the valve units are substantially identical, only one will
is separated from the salt chamber by a partition or verti
be describedwith likereference numerals having a super
cal wall 27. The ?oat chamber contains a ?oat valve 55 script a showing like parts on the second valve. The?
assembly including a valverbody 28. ' Through the top of
valve unit 61 (FIG. 2) has a valve body 62 and ?a. con
the valve body 28 projects a ?oat rod 29 having an
nector 63 mating with. the ?tting or coupling 14 on the
adjustably mounted? ?oat ball 31 intermediate its ends
service tank. The valve body 62 includes a main port
and, above the valve body 28, Upper and lower ball
64, a. communicating passage 65, a central chamber 66,
retainers or positioners 32 and 33, respectively, for main 60 and a. by-pass port 67. A passage 68 communicates be
taining thejball in adjusted position? are mounted on the
tween the central chamber 66 and the connector 63?. A
?oat rod 29. above and below the ball. 7 A vertical con
hollow diaphragm cap. 69 is mounted ?on top of the valve
duit or pipe 34 communicates with a port 35 in the lower
body 62 and provides spaced chambers 71 and 72' joined
31 and its ?oat rod .29.
V
r
?
A valve stem 74 extends through a substantial length
The valve body 28 consists of a cylindrical member 70 per andlower dished diaphragm plates 78- and 79. The
38 externally? threaded at? both. ends to accommodate a
lower diaphragm plate 79* is seated on an enlargement
threaded cap or cover- 39 atitsupper end and an internal
ly threaded base 41 atthe opposite end. The cap or cover
or shoulder 81 on the valve stem'74. and the upper dia
phragm plate '79 bears against the central portion 77 of
39 contains an; opening 42 through whichloosely ex
thediaphragm. 76and isrheld in placeby a lock nut 82v
tends the ?oat rod 29. Gaskets or annular sealing rings 75 and lock washer 33 on the threaded upper end 75. The V
3,083,728
6
5
outer periphery of the diaphragm 76 is clamped between
the flanged periphery of the cap 69 and the valve body 62.
lower end to accommodate the upper end of a ?lter screen
The valve stem 74 is substantially completely sur
rounded by a plunger tube 84. A second diaphragm 85
is secured to the plunger tube 34 by means of a sleeve 86
having an inwardly opening channel 87 and an annular
shoulder for receiving the central part of the diaphragm
85. A collar 38 above the diaphragm 85 clamps the
central portion of the diaphragm onto the shoulder. A
snap ring 89 anchored to the plunger tube 84 abuts an 10
126, with the lower end of the screen resting upon a resil
ient flow regulator 127 having a constriction 128. The
flow regulator 127 rests on a shoulder 129 formed on
the surface of the central passage 121.
Immediately below the flow controller or regulator 127
is an inlet port 131 in a nipple 132 formed on the ex
ternal surface of body member 119, the ?exible tubing
36 from the vertical pipe 34 in the brine tank 23 being
connected to the nipple. A tubular part 133 containing
a throat or passage 134 for the eductor is mounted
annular ?ange on the sleeve 86, said ?ange locking the
within the body member 119 by a ?ange 1'35 on the tubu
sleeve and collar ?63 together due to the flange being
lar part 133 engaging a second shoulder 136 on the sur
formed over the adjacent edge of the collar. An O-ring
face of central passage 121. The tubular part 133? extends
91 within the channel 87 provides for sealing contact
with the exterior of the plunger tube 84.
15 below the lower end of the eductor body member 119
and into the service tank.
The outer periphery of the diaphragm 85- is secured
The by-pass unit includes a by-pass part 137 and a
to the valve body 62 between a shoulder 92 formed on
drain part 138 shown thereabove in FIGS. 3 to 6, inclu
the inner surface of the valve body and a retainer ring
sive. The by-pass part 137 has a by-pass 139 connected
93. An externally threaded lock nut 94 is threadedly
engaged with inner threads formed on the internal sur 20 at its opposite ends to the by-pass ports 67 and 70a in the
valve units 61 and 6141, respectively. The drain part 138
face of the valve body 62 adjacent the shoulder 92 and
is connected at its opposite ends to the drain ports 163 and
bears against and retains the retainer ring 93. An ex
103a of the valve units and contains a drain passage 14-1
pansion or coil ?spring 95 is seated at its lower end against
housing a slidable check valve assembly 142. One end
the snap ring 559 adjacent the collar 88 with its upper end
seated against the lower diaphragm plate 79.
25 of the drain passage 141 is closed off by a plug 143 carry
The valve assembly in the valve body 62 includes the
ing a sealing O-ring 144. The connection from valve 61
enters through a side port 145 adjacent the end closed
valve stem 74 having a conical valve 96 at its lower end
and the plunger tube 84 encompassing but spaced from
by the plug 143 and the other end of the drain part is
shown terminating in ?an elbow 146.
the valve stem to provide an annular passage therebe
tween. The plunger tube is longitudinally slotted at 97 30
The ?check valve assembly 142 includes a tubular body
?at its upper end to provide space for ?the flow of liquid
147 open at the end adjacent the elbow 146 and terminates
in an enlarged resilient conical head 148. The conical
when the lower diaphragm plate 79 abuts the top of the
head 148 is adapted to seat against a washer 149? which
tube.
At its lower end, the plunger tube has an enlargement
is press-?tted into the passage 141 ?beyond one of its
9?� which is covered with an elastic or sealing covering
tapered reductions and seated against a shoulder 15%. A
forming a valve member 59 adapted to be lowered into
flow regulator 151 abuts the washer 149 on the side oppo
site the shoulder 150, the ?ow regulator being held in
contact with an annular valve seat 101 at the upper end
of the connector 63? or raised into contact with an annular
valve seat 162 in the valve body.
a groove 158. Slots 153 are formed in the wall of the
The chamber 72 communicating with chamber 71
?through the passage 73 also communicates with the drain
port 103 through an elastic flow control Hi4, an aligned
opening in the upper diaphragm 76 and a passage 1115
opening into the drain port 163. The drain port 193
tubular body 147 adjacent the head 148 to allow liquid
entering the tubular valve body to escape through a com
municating port 154 arranged intermediate the ends of
the drain part 138. An expansion or coil spring 155 is
mounted in the passage 141 rearwardly of the valve head
operative position by a snap or look ring 152 seated in
also communicates with the chamber formed between the 45 148 with one end seated against a shoulder 156 formed
upper diaphragm 76 and the lower diaphragm 85 through
a passage 1%. The chamber 121} formed below the dia
phragm $5 and ?above the valve ?seat 102 communicates
with the by-pass port 67 in valve 61. In the valve 614,
however, the by-pass port ?Tile communicates with the 50
adjacent the outlet port 154 and the opposite end seated
against the shoulder 157 formed on the enlarged conical
head 148. Thus the valve closes the passage from the
port 145 until the pressure of the liquid passing through
the ?ow controller or regulator 151 exceeds the pressure
exerted by the coil spring 155.
The operation of the novel control valve assembly and
brine tank, the position of the operative parts thereof
and the path of flow during the four stages are as follows
and in dotted outline in FIG. 2) also is provided with 55 with reference to the ?ow diagrams in FIGS. 3, 4- and 5.
chamber formed below the valve seat 102a and above
the connector 63a. This difference in construction be
tween the two valves will become evident later. The
main port 64 (shown more clearly in FIGS. 3, 4 and 5
a passage 1&7 leading to a cylindrical port 1133 having a
?lter screen 169?. This port is connected to the chamber
Normal Service
With reference to FIG. ?3, during normal service oper
ation, hard water enters inlet valve 61 through the main
and a port 112.
Into the junction of port 112 with the chamber 71 pro 60 port 64 ?and passes through the passage 65, main chamber
jects a plunger or valve member 113 of a solenoid valve
66, connectors 63 and 14 and the inlet manifold 16.
114, the operation of which is controlled by one circuit
The water passes down through the bed of ion exchange
of a timer 115 (FIG. 1). The plunger 113 opens and
material 11; the calcium and magnesium ions being ex
closes the port 116 (PEG-S. 3, 4 and 5) at the junction
changed for sodium ions resulting in soft water. This
of ? .e port 112 and chamber 71.
65 softened water enters outlet manifold 17 through the
The outlet port 67a found in the valve member 61EL
strainer section 19, passes through the connectors 14 and
communicates with the chamber 121)? formed below the
63a into the main chamber 66? of outlet valve 61%,
through the passage 653 and the main port 64a to the serv
lower diaphragm 85a and above the valve seat 192%, and
71 through an aligned opening 111 in the diaphragm 76
connects the valve 6121 to the eductor 22 through a pas
sage 118. The eductor 22 includes a cylindrical body
member 119 having a central passage 121 closed at the
top end by a plug 122 threadedly engaging the body
member 119.
An O-ring 1213 below the ?ange on the
plug 122 seals the junction between the plug and the educ
tor body.
The plug 122 also has a recess 125 in its
ice line for the home or other user.
During the initial portion of the normal service stage,
water also passes up through the port or opening 21
mounting the eductor, the tubular part 133 of the educ
tor, through the port 131 into the ?exible tube 86 and
downwardly through the vertical pipe 34 to the float valve
75 body 28?. Water can also pass through the ?ow regu
3,083,728
. 8
port67 and thence through by-pass 139, by-pass port 70a
later 127 of the eductor, through the? ?lter screenv 126'
and the passage 118 into the port 67?1 and valve 61%.
However, flow is stopped at that point by the lower dia
phragm 85a and the enlargement ~98a seated against valve
seat 102?.
and the connector 638' into the tank. Water entering
the tank emerges through the strainer section 19 of out
let manifold 17 and this water is ?forced up through the,
mineral bed 11 causing a swirling and circulating action
7
to remove any dirt or sedimentation in the bed.
As water enters the lower chamber 49 in the valve
Water
passes through the slots 18 of the inlet manifold 16 and
up through the connectors 14 and 63. The slots, in the
inlet manifold are of such dimensions that the ion ex
body 28 through the passage 54', it buoys up the ball valve
.53 to seal the opening 46 leading to the upper chamber
48. The offset by-pass passage 51 allows water to slowly.
enter the upper chamber .48 and pass through the opening 10. change material is normally prevented from leaving the
tank.
42 since the valve member 45 is in its lowered position.
The backwash water coming up through the connector
The water passing'through' the opening 42 begins to ?ll the
63 passes into the annular passage formed between the
?oat chamber 26 and. passes into, the salt chamber 25
valve stem 74 and the plunger tube 84, through the slots
through the opening 57. Water continues to enter through
the Valve ?body 28 until the level of th ewater contacts 15 97 and through the drain port 103 into the drain passage
141.. The ?ow regulator 151 controls the rate of ?ow
and lifts the ?oat ball 31 and ?oat rod 29 so that the valve
of water during the backwashing stage. The backwash
member 45 closes the opening 42. The [brine tank re
water is under sufficient pressure to overcome the force
mains in this state with the salt in the salt chamber 25
of the expansion spring 155 and forces the check valve
being dissolved by the water during the remainder of the
normal service stage.
20 142 rearwardly to open and allow the backwash water
'
to exit through the port 154.
During normal service, the solenoid plungers 113v and
During backwashing, the valve stem 74a and plunger
113?:a ?are closed to stop any ?ow of ?water. through the'
ports 116 and 1169'. The springs 95 and? 95a urge the
upper diaphragms .76 and 769- and the upper and lower
tube 84a are in their upper positions to seal off the upper
portion of valve 61a from the line pressure. The hard
diaphragm plates 78, 78a, 79 and 79?(1 to their uppermost: 25 water is allowed to by-pass through the? passage 65a and
main port 648? to supply hard water for household
positions with the enlargement-s r98 and 98a ?bearing against
demands.
the annular valve seats. 102 and 1021,. respectively. With
In the backwashing operation, the untreated water at
the valve stems 74 and: 74a and the plunger tubes 84 and
line pressure. (LP) enters the main port 64 and exits in
the passage 107 and chamber 198. Line pressure is
found in the chamber 71 exerting a downward force on
84*? held in this?- position; there is no ?ow of liquid in
the upper portions of the valve assembly.
In the service- operation, the untreated water continues?
at line pressure, hereinafter designated (LP), from the.
the? diaphragm 76; Line pressure also exists in by-pass
ports 67 and '70a and in the by-pass 139. Line pressure
enters. the tank through the connector 63*? and remains.
pressure drop through the tank which is. the operating 35 in the service line from the main port 648? in valve mem
ber 61%. Line pressure still exists in passage 107a and
pressure, hereinafter designated (OP); Theline pressure
chamber 108*?.
'
(-LP), also exists in the passage 107' and chamber 108.:
main port 64 to the tank 10 while the soft or. treated water?
emerging from the tank is under line pressure minus the
The operating? pressure (OP) also exists in the passage
The backwash water emerging ?from the tank through
107a, chamber 108*?, by-pass passage? 139,. eductor 22,
the connector 63 is at line pressure minus the pressure
passagerlls, ?exible tubing" 36 and the brine tank" valve
drop in the tank or operating pressure (OP). Operating
body 28.
pressure now exists in the annular passage in the plunger
tube 84, the drain port 163 and the drain passage 141
?
Since the upper portions of. the valve assembly are
cut off from" the water supply, atmospheric pressure,
ahead of the ?ow regulator 151. Operating pressure still
exists in eductor 22, outlet port 67a and passage 118,
atmospheric pressure exists inthe chambers between dia 45 ?exible tubing 36 and? the? brine tank valve body 28.
phragms 76 and? 85' and diaphragrns. 76a? and 85s,?. in.
Regeneration
chambers 71 and71a, chambers 72.-and- 72a, and in the
drain part. 138.
With reference to FIG?. 5, the regeneration stage of
the unit is initiated when the second circuit of the timer
Backwash.
designated (AP), exists in these portions.
Therefore, i
50
With reference to FIG. 4,? to initiate the backwash
stage for this unit, one circuit of the timer 11-5 energizes
the solenoid 114, thus retracting the solenoid plunger or
.
valve member 113. Hard water enters the port 108
through the passage 107, passes through the ?lter screen 55
169, the aligned opening 111 in diaphragm 76,?.port 112,
and the port 116 to enter the chamber'71.
The water?
115 energizes the solenoid 114?L causing the Withdrawal
of the solenoid plunger 113*?. Hard water coming from
the by-pass 139 will enter passage 107*? from passage
65a, pass. through therport 188"?, the ?lter screen 105?,
the aligned opening 111a in the diaphragm 76?*, port
1123 and the port 116?1 to the chamber 71ah to exert
pressure on the topof the diaphragm 76a. This pressure
causes the valve stem 74?3L and the plunger tube 84*? to
entering the chamber 71 exerts pressure onthe diaphragm.
descend, thus seating the enlargement? 98a on the annular
'76 forcing the valve? stem 74 d0wnward,.thus'open1ng
valve seat 1911:. and seating the lower diaphragm plate
theanuular passage in the plunger tube 84. The expan 60 79*? on the top of the plunger tube 84*?. A small amount
sion spring. 95 on being compressed, urges the plunger?
of water will enter the chamber 728' through passage v73a
tube 84v downward until the; enlargement 98 abuts the
lower, annular valve seat 101. Movement. of the- valve
stem '74 continues until the lower diaphragm plate 79
and escape to the? drain passage 141 through the ?ow
regulator 104a and drain port 103??.
,
>
As seen in FIG. 5, both solenoids are activated to open
abuts the upper end of the plunger tube 84.. Line pres 65 position and? both valve stems 74 and 74a? and plunger?
sure continues to hold the valve stem 74 and the. plunger
tubes 84.?and 842? are in their lowered positions. Thus
tube 84 in their lowered positions during the backwash,
the service tank is completely isolated from the hard
brine and rinse stages of the cycle} A small amount I water line during regeneration except for the eductor 22.
of water Will enter chamber. 72 through passage 73 and
To effect regeneration, hard Water enters the valve 61
escape to the drain passage 141' through ?ow regulator 70 through the main port 64-and passes through the passage
104 and drain port 103.
a
-
With the connector 63 closed to the central chamber 66,
hard water enteringpthrough the main port 64 and pas
65, by-pass port 67, by-pass 139, and the -by-pass port
76a to- enter the central chamber 66a of the valve 619'.
With the plunger tube 84a. in its lowered position, the
sage 65 will ?ow through the annular space between the
hard Water passes through the annular space between the
plunger tube 84 and the valve seat 102 to the by-pass 75 plunger tube 84aL and the annular valve'seat 102540 enter
3,083,728
9
the eductor 22 through the outlet port 67a and the pas
sage 118. The hard water passes through the ?lter screen
126 and the ?ow regulator 127 to enter the depending
tubular part 133. The ?ow regulator 127 controls the
rate of ?ow of brine during the regeneration stage.
The pressure differential created by the water passing
through the throat 134 in the tubular part 133 results
fourth or rinse stage of the cycle occurs when the brine
?ow from brine tank 23 has ceased. All valve parts re
main in their same positions with only hard water issuing
in the creation of a vacuum at the inlet port 131. This
vacuum draws the brine from the brine tank 23. As
The line pressure (LP), operating pressure (OP) and vac
the initial amount of brine is drawn through the valve
ments as inrthe regeneration stage. When ?lter material
alone is used in the tank 10, the brine stage will be
omitted and the cycle will go directly to the rinse stage
from the regeneration stage. The rinse stage is used
body 28, the liquid level in the ?oat chamber 26 de
creases, thus causing an initial lowering of the ?oat ball
31, the ?oat rod 29 and its valve 45. In drawing brine
from the valve body 23, the ball valve 53 is drawn away
from the eductor 22 to rinse away any excess brine in the
service tank. The ?ow path of the waste liquid is the
same as that found in the regeneration stage. The rinse
stage continues until water from the connector 63a is soft.
uum (S) are found in the same passages and other ele
for a ?lter material to flush untreated backwash water from
from its upper valve seat to allow brine to pass through 15 the ?lter bed into the drain system.
Once the rinse stage of the cycle has been completed,
the timer 115 simultaneously deactivates both solenoids
114 and 114a allowing the solenoid plungers 113 and 113?"
to advance to close off the ports 11d and 116?. The
brine entering the upper chamber 43 passes through the 20 pressure in chambers 71 and 713 decreases by relieving
?uid through the passages 1G4 and 1645, respectively, such
slots 52 in the ?at lower surface of the valve 45, the cen
that the water pressure acting on the diaphragms 85 and
tral opening 47, the lower chamber 49 to the passage 54
85a forces the plunger tubes 84 and 84a upward closing o?
in the base 41 leading to the vertical pipe 34�, the ?exible
the by-pass 139. The coil springs 95 and 95a force the
tubing 36, and the eductor 22. The brine entering the
eductor 22 mixes with the hard water passing through the 25 valve stems 74 and 74*1 upward, closing off the drain ports
1G3 and 103a. Thus, normal service operation is re
?ow regulator 127 with the mixture entering the service
stored in the system. At the beginning of the service
tank 10 through the opening 21. The brine ?ows down
cycle, water is fed to the brine tank 23 through the eductor
wardly through the mineral bed with the sodium ions in
22 to produce su?icient brine for the next regeneration
the brine being exchanged for the calcium and magnesium
ions held by the ion exchange material 11, and the waste 30 cycle.
Thus it can be seen that we have invented a new and
liquid or effluent enters the outlet manifold 17 through
the strainer 19.
novel automatic valve assembly which will give the most
The waste liquid exiting from the outlet manifold 17
desirable regeneration characteristics; namely, an up?ow
backwash and a downflow brine and rinse. While there
passes through the connectors 14 and 633, the annular
passage between the valve stem 74*? and the plunger tube
is shown a preferred embodiment, it is understood that the
same is susceptible of modi?cation and change, and com
842, the slots 97a, the drain port 103a and enters the drain
prehends such equivalents as are inherent in this disclosure
passage 141 through the elbow 1%. The waste liquid
?owing through the tubular check valve body 147 passes
and the claims.
Having thus disclosed the invention, we claim:
through the radial slots 153 therein and exits through the
1. A directional valve assembly for controlling the
communicating port 154. The pressure of the liquid in 40
direction and ?ow of liquid therethrough, comprising ?rst
the check valve body member 147 supplements the pres
sure exerted by the coil spring 155 to retain the resilient
and second valve bodies, a reciprocable valve member in
the central opening 46, but the ball valve still ?oats above
the valve seat in the base 41.
As the brine begins to ?ow, the valve 45 on the ?oat rod
29 is depressed to seat on the central partition 46 and the
valve head 143 closed on its seat 149.
The waste liquid will also have a tendency to enter the
valve 61 through the inlet manifold 16 and to enter the
drain passage 141 through drain port 133. However, the
pressure of the liquid passing through the drain port 103
cannot overcome the combined pressures of the coil
each valve body, an upper, a lower, and an intermediate
chamber in each valve body, sealing means surrounding
each valve member and separating the upper chamber
from the intermediate chamber, a valve seat between the
intermediate and lower chambers cooperating with said
valve member, an enlargement on the lower end of said
valve member seating on said valve seat in one of the two
spring 155 plus the waste liquid passing through drain
port 193?- so that the check valve 142 remains closed. 50 valve positions, an outlet leading from said lower cham
ber of each valve body, a second valve seat cooperating
It should be noted that during the regeneration stage, hard
with the enlargement on the valve member and separating
water is always available from the main port 64*? of the
the lower chamber from said outlet, a passage within said
outlet valve 61%? to ful?ll any household or other require
ments.
valve member which is closed when the valve is in normal
When the brine in the brine tank 23 becomes exhausted, 55 position and is open when the valve enlargement seats on
said second valve seat to provide communication between
to prevent any air from being sucked into the eductor 22,
said outlet and said upper chamber, a drain port com
the ball valve 53 sinks to seal off the passage 54 in the base
municating with the upper chamber in each valve body,
41 of the valve. At this point, all ?ow? of brine or air
an inlet communicating with the lower chamber in the
ceases, and the ball valve 53 remains in this position
until water is fed to the valve body 28 at the start of the 60 ?rst valve body, a service outlet communicating with the
lower chamber in the second valve body, a by-pass passage
next normal service stage.
communicating between the intermediate chamber in said
During regeneration, the line pressure (LP) continues
in the chamber 108 and 71 and in the by-pass 139'. Line
pressure is also present at the main port 64a. Further,
line pressure (LP) is now found in the port 163? and the
chamber 71a as well as in the passage 118 and the ?lter
?rst valve body and the lower chamber in the second valve
body, and an eductor port communicating with the inter
mediate chamber in said second valve body.
2. A directional valve assembly as set forth in claim 1,
assembly of the eductor 22,. Operating pressure (OP)
including an eductor communicating with the eductor port
is found in the eductor 22] in the tubular part 133, the
in said second valve body and further communicating
service tank 1%) and in the passages leading to drain port
with a source of brine,
193a. Operating pressure is also found in the drain 70 3. A' directional valve assembly as set forth in claim 1,
passage 141. A vacuum, hereinafter designated (S), ex
including a drain passage leading from said drain port
ists in the ?exible tubing 36, vertical pipe 34 and passage
in each valve body ?and communicating with a common
54'.
drain, and a reciprocable check valve in said drain pas
Rinse
sages to selectively allow ?ow from one of the two drain
Again with reference to FIG. 5 of the drawings, the 75 ports.
3,083,728
12
4.- A directional valve assembly as set forth in claim 3,
in which said reciprocable check valve includes a valve
member, a sealing head on the valve member and ex
seat in said drain passage from said ?rst valve body, a
a valve seat in said last mentioned passage, a resilient
tending into the drain passage from the ?rst valve body,
tubular valve body longitudinally movable in said drain
spring urging the sealing head against the valve seat, said
passage and open at one end communicating with said
second valve body, a sealing head on the opposite end
tubular valve member extending within and conformably
?tting in the drain passage from the second valve body,
of said tubular valve body and cooperating with said last
and radial slots in said tubular valve member opposite
said common drain outlet.
10. A directional valve assembly as set forth in claim
mentioned valve seat, and resilient means normally bias
ing said sealing head against said valve seat.
5. A directional valve assembly as set forth in claim 1, 10 9, including a flow control in the drain passage from said
?rst valve member to limit ?ow therefrom.
in which said reciprocable valve member in each valve
11. A directional valve assemblyas set forth in claim 5,
body comprises a plunger tube movable relative to said
in which an actuating diaphragm is secured to the upper ,
valve body and terminating at its lower end in said valve
end of the valve stem and to the valve body and extends
enlargement, and a valve stem within said plunger tube
and spaced therefrom to form said passage in the valve
across the upper chamber.
member, and a valve at the lower end'of said valve stem
normally closing said passage, said valve stem being
movable relative to said valve body and to said plunger
tube when the valve member is moved to its actuated
position.
'
v
s
6. A directional valve vassembly for controlling the direc
tion and flow of liquid therethrough, comprising ?rst and
12. A directionalzvalve assembly for controlling the di
rection and flow of liquid therethrough, comprising ?rst
, and second valve bodies each having 1an upper, lower and
intermediate valve chamber, a reciprocable valve member
movable within said chambers, a diaphragm sealing mem
her in each valve body secured to the valve member and
its valve body and separating said upper and intermediate
second valve bodies, a longitudinal chamber in each valve
body and formed into upper, lower and intermediate valve
chambers, a valve seat for said valve member and sepa
said chambers, a diaphragm sealing member secured to
the valve member and the valve'body and separating said
upper and intermediate chambers, a valve seat for said
valve member and separating said intermediate and lower
valve body, a valve at the lower end of the valve stem,
and a plunger tube encompassing but spaced from the
rating said intermediate and lower chambers, said valve
chambers, a reciprocable valve member movable within 25 member including a valve stem movable relative to its
valve stem to provide an annular passage therebetween
and movable relative to its valve body, an elongated
chambers, said valve member including a valve stem mov 30 plunger Valve on the lower end of the plunger tube and
able relative to its valve ?body, a valve at the lower end
in normal position seated against said valve seat, said
' of the valve stem, and a plunger tube encompassing but
valve on said valve'stem normally closingithe annular pas
spaced from the valve stem to provide an ?annular passage
sage, a second valve seat formed at the lower side of said
lower chamber and receiving said plunger valve when in
therebetween and movable relative to its'valve body, an
elongated'plunger valve on the lower end of the plunger
tube and in normal position seated against said valve seat,
actuated position, a diaphragm actuating member spaced
from said diaphragm sealing member and secured to the
said valve on said valve stem- normally closing the an
nular passage, a second valve seat formed at the lower
upper end of said valve stem and said valve body, said
?rst valve body having a main inlet entering said lower
side of'said lower chamber and receiving said plunger
chamber and an outlet leading from its second valve seat, a
valve when in actuated position, a main inlet in said 40 by-pass port communicating with said intermediate port
?rst valve body entering, said lower chamber, an outlet
in said ?rst valve body, and a drain port communicating
leading from the second valve seat, ?a by-pass port com
with said upper chamber and said annular passage in the
municating with said intermediate port in said first valve
valve member in said ?rst valve body, a service outlet,
body, and a drain port communicating with said upper
a by-pass port and an outlet communicating with the
chamber and said annular passage in the valve member in 45 lower chamber in said second valve body, an eductor port
said ?rst valve body, a service outlet, aby-pass port
communicating with the intermediate chamber in the sec
and an outlet communicating with the lower chamber in
ond valve body, and a drain port communicating with the
said second valve body, an eductor port communicating
upper chamber and the'annular passage in the valve mem- ?
with the intermediate chamber in the second valve body,
ber in the second valve body, a by-pass passage connecting
and admin port communicating with the upper chamber
said by-pass ports, a drain passage connecting said drain
and the ?annular passage in the valve member in the secf
ports and leading to a common drain outlet, a check valve
ond valve body, a by-pass passage connecting said by
in said drain passage selectively allowing flow from one
pass ports, a drain passage connecting said drain ports
or the other of said drain ports, and an eductor com
and leading to a common drain outlet, a check valve
municating with said eductor port.
in said drain passage selectively allowing ?ow from one 55
orv the other of said drain ports, and ?an eductor com
municating with said eductor port.
7. A directional valve assembly as set forth in claim 6,
References Cited in the ?le of this patent
UNITED STATES PATENTS
including a solenoid unit to actuate each valve member
2,034,690
Anderson __________ __ Mar. 24, 1936
and a dual circuit timer automatically actuating each
2,265,225
2,335,814
Clark _n ______________ __ Dec. 9, 1941
Stevenson __________ __ Nov. 30, 1943
solenoid unit.
> r
8. A directional valve unit as set, forth in claim 6, in
which each valve stem moves relative to said plunger
tube to'open the annular passage and establish communi
cation between the outlet and, the upper chamber in each
2,638,121? '
Dillman ____?_____n____ May 12, 1953
2,768,950?
Kryzer ______________ __ Oct. 30, 1956
2,993,508
Wagner _____ __' _____ __ July 25,
1,044,952
France ______________________ __ 19'53
FOREIGN PATENTS
valve body.
9. A directional valve assembly as set forth in claim
6, in which said check valve includes a tubular valve
1961
V
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