US3683961A - Valves - Google Patents

Valves Download PDF

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Publication number
US3683961A
US3683961A US86462A US3683961DA US3683961A US 3683961 A US3683961 A US 3683961A US 86462 A US86462 A US 86462A US 3683961D A US3683961D A US 3683961DA US 3683961 A US3683961 A US 3683961A
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US
United States
Prior art keywords
valve
pair
seats
stem
disc
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Expired - Lifetime
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US86462A
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English (en)
Inventor
Jacques Launay
Jacques Mongault
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PERMO
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PERMO
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D11/00—Control of flow ratio
    • G05D11/003—Control of flow ratio using interconnected flow control elements
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86879—Reciprocating valve unit
    • Y10T137/86895—Plural disk or plug

Definitions

  • ABSTRACT A method whereby the distribution device of a valve constituted by a train of valve-discs mounted on a common valve-stem is put in a preferential position, this position being attained by utilizing the pressure of the liquid which is present within the distribution device, said pressure being exerted independently of the operating means of the distribution device, on the complete valve train in order to subject this latter to a resultant force which always has the same direction.
  • valve-discs which form part of the distribution device including the drain valve are grouped together on a common stem; the valve-discs are suitably dimensioned with respect to each other and the flow and leakage cross-sections are also suitably dimensioned; the forces arising from the flow of hydraulic fluid which are thus obtained tend to bring the distribution device into its predetermined preferential position.
  • This invention relates to valves, in particular to valves which are primarily intended for use in conjunction with equipment units for the treatment of liquids such as units for water treatment and especially in association with water softeners, sand-filters or granular material-filters, units for demineralization on resin, water supply systems and so forth.
  • the invention is more especially concerned with automatic valves for carrying out a sequence of operations.
  • valves which are known at the present time are distinguished by the number of periods or the number of positions taken up successively in order to establish the communications which are necessary according to the particular application under consideration.
  • liquids to be treated can be conveyed in the intended direction by means of systems or devices suchas distributing valves of the rotary type, displacement type, diaphragm type,
  • valves which are constructed in accordance with this design concept, the following may be mentioned:
  • valves whose positions are taken up successively under the action of hydraulic pressures which produce action both on the valve-discs and on the piston or operating diaphragm which are associated with these latter, the said valves being set in operation by means of a valve-disc which shuts off the drain outlet and is separate from the moving system;
  • valves in which all the discs as well as the drain valve are grouped together on the same shaft or so-called valve-stem but in which the positions taken up successively result from the mechanical action of an external element which is coupled to the moving system;
  • valves are intended to provide a simultaneous tightness on a number of seats but this can never be achieved in a wholly satisfactory manner without a complex arrangement of the moving system which consists of valve-discs, circlips, springs and which is actuated by an external mechanism comprising a restoring means.
  • the arrangement which is found in the third case entails the use of sliding valves, the displacement of which is partly obtained by means of a spring and partly with the aid of a double-acting external control means.
  • the object of the present invention is to make provi sion for automatic valves of simplified type which meet practical requirements more effectively than comparable valves which were employed for the same purpose in the prior art, especially insofar as the valves according to this invention have a small number of components, do not call for a very high degree of accuracy in molding or machining dimensions irrespective of the material of which they are formed and permit a reduc tion both in time of assembly and in capital outlay; moreover, the valves in accordance with the present invention are of strongly built design and of small overall size; they have only a small number of moving parts, the effect thereby achieved being to eliminate causes of wear and to ensure a high degree of leak-tightness in all successive positions; they can be employed over a wide pressure range and also provide an entirely free passageway resulting in minimized pressure drops.
  • This invention is directed to a method whereby the distribution device of a valve constituted by a train of valve-discs mounted on a common stem is put in a preferential position, said method being essentially characterized by the fact that said preferential position is attained by employing the pressure of the liquid which is present within the distribution device, said pressure being exerted independently of the operating means of the distribution device or of any auxiliary means, on the valve train taken as a whole in order to subject said valve train to a resultant force which always has the same direction.
  • the means adapted to carry out said method consist in the fact that the pressures which are exerted on the valve train by the liquid within the distribution device and which subject said valve train to a force which always has the same direction are obtained by grouping together on a common stern all the valve-discs which form part of the distribution device including the drain valve, as well as by suitable dimensioning of the valve-discs with respect to each other and of the flow-and leakage-cross-sections which generate forces arising from the flow of the hydraulic fluid and tend to bring the distribution device into its predetermined preferential position.
  • This invention further relates to an automatic valve which is primarily intended for use in conjunction with equipment units for the treatment of liquids and especially water treatment units.
  • Said valve essentially comprises a distribution device equipped with a train of valve-discs including the drain valve which are mounted on a common stem, and suitable flowand leakage-cross-sections which are dimensioned in a predetermined manner as hereinabove defined.
  • the positions which are taken up successively by a train of valve-discs establish in alternate sequence a connection and separation between the chambers in which said valve-discs shift and the chambers which are located on each side.
  • a plurality of valve-discs can open or close a single port which provides a communication between two chambers.
  • valvediscs are mounted in such a manner as to permit of sliding motion on the valve-stem while retaining leaktightness between said discs and said stem.
  • valve-discs are formed of sufficiently flexible material such as rubber, for example, in order to ensure sufficient leak-tightness within the desired pressure range while being applied against the seats of the ports to be shut off.
  • a slot is formed in the flexible material from which the valve-discs are fabricated.
  • valvediscs are formed of a rigid material or provided with a rigid strengthening core.
  • valvediscs have different cross-sectional areas.
  • the leakage-cross-section' of the valve-discs which have a large sectional area is smaller than the leakage-cross-section of the valve-discs which have a smaller sectional area.
  • valve-discs are maintained A better understanding of the invention will be obtained from the following complementary description,
  • FIG. 1 is a sectional view of a two-stage valve in accordance with the arrangements of the invention
  • FIG. 2 shows a distribution device in which thevalvediscs are capable of relative displacement as a result of simple sliding motion
  • FIG. 3 is a sectional view showing a valve train comprising a disc of the rigid type and a deformable disc of the flexible type;
  • FIGS. 4 and 5 show diagrammatically the means for operating the distribution device in accordance with the invention
  • FIG. 6 is a sectional view of an alternative form of two-stage valve as constructed in accordance with the arrangements of the invention.
  • FIG. 7 is a part-sectional view showing the leakagecross-sections and the guiding of the distributor onto a drain seat
  • FIGS. 8 and 9 show diagrammatically the deformation to which the valve-discs can be subjected in order to ensure effective leak-tightness at several levels
  • FIG. 10 shows another guiding means
  • FIG. 11 shows a distribution device comprising five valve-discs in different alternative forms of construction
  • FIGS. 12 and 13 show the positions taken up successively by a valve train which establishes in alternate sequence a connection (as shown in FIG. 12) and a separation (as shown in FIG. 13) between the chambers within which said valve-discs travel and the chambers which are located on each side;
  • FIG. 14 shows one form of construction of the distribution device in accordance with the invention in which a plurality of valve-discs are capable of either opening or closing a single port which provides a communication between two chambers.
  • valves for softener units involving two-stage regeneration there is a utilization position and a regeneration position.
  • the valve serves to pass the raw water to be treated through an ion-exchange resin bed and to fill at the same time a salt storage tank in order to form the brine which serves to regenerate the resins when these latter are depleted.
  • the valve serves to feed the raw water through a by-pass to a hydro-ejector which draws in the brine in order to pass this latter through the resin bed in the direction which is reverse to the utilizationdirection and to regenerate the bed until no brine remains, whereupon the resin bed is rinsed with the driving water of the hydro-ejector and again in the same reverse direction, the brine as well as the rinsing water being discharged to waste throughout this operation.
  • the distributor remains in its new position as long as the effort is maintained and returns automatically to its initial position as soon as said effort ceases.
  • the force which serves to displace and maintain the distributor in all the positions other than the preferential position can be of any kind such as pneumatic, hydraulic, mechanical, electrical and so forth.
  • the element which exerts the operating effort on the distribution device is not necessarily coupled mechanically therewith; it is only necessary to ensure that said element should be applied against. the device inasmuch as the operating force is exerted only in one direction and has no other effects.
  • valve train which constitutes the distributor could change over from one end position to another in successive forward movements corresponding to weIl-determined'intermediate positions, in which case the return takes place in ac- A diaphragm 10 which is secured tothe actuating stem 13 by means of the abutment member 14 and clamped between the body 1 and the block 2 constitutes movable divider means and ensures leak tightness between the compartments 11 and 23.
  • the reduction-gear motor 3 which is fixed on the block 2 produces action on the jack or valve member 12 by means of the cam 15, the raw water is admitted through the port 16, circulates through the valve via the duct 17, passes through the resins and then the softened water is then conveyed through the duct 18 so as to pass out for utilization through the port 19.
  • the valve-disc 8 ensures leak-tightness against the seat 5, thereby cutting off any direct communication between the inlet 16 and the outlet 19.
  • the valve-disc 9 ensures leak-tightness against the seat 7 and prevents any communication between the inlet 16 and the drain outlet 20.
  • the duct 21 is in communication with the chamber 31 of the control jack 12 which, as shown in FIG. 4, causes the valve disc 29 to be applied against the seat 30, thereby cutting off any communication withthe compartment 11 as a a result of the pressure of the supply system, said comcordance with the same criteria up to the preferential end position.
  • the valve train can comprise an unlimited number of valve-discs.
  • valve inaccordance with the arrangements of the invention can be constituted by a combination of several distribution devices which may be either dependent or independent of each other.
  • a diaphragm applied against the extremity of the device which carries the thrust is employed as operating means.
  • the applicationof pressure to said diaphragm which has the effect of producing the desired effort can advantageously be initiated by an electric reductiongear motor which drives a cam and thus actuates a hydraulic control jack having the characteristics disclosed in the co-pending US. Pat. application Ser. No. 84,773 as filed in the name of the present applicants on Oct. 28, 1970 and entitled Improvements to control devices for pressure chambers.”
  • a further solution consists in replacing .the diaphragm by a piston which is displaceable within a cylinder or by a push-rod, lever, control member, spring or the like which produces action on the distributor.
  • Triggering of said operating means can be performed manually or rendered automatic by means of a timedelay system, clock or the like which actuates a hydraulic or pneumatic electrovalve or alternatively an electrical or mechanical device and so forth.
  • the flow path followed by the liquid through the valve is modified by the translational motion of the distribution device.
  • the two-stage valve in accordance with the present invention consists of a body 1 which comprises in coaxial relation the stepped valve-seats 4, 5 and 6, 7 between which the shut-off valve-discs 8, 9 move respectively and are mounted on the shaft or stem 13.
  • the brine which is thus drawn in passes through the resins in the direction opposite to that in which the water circulates during the softening stage. Said brine follows the duct 18, then the duct 17 and is discharged through the drain outlet 20 after having passed through the compartment 23 in which the flow is practically gravitational.
  • the cam 15 no longer produces action on the jack 12, the pressures of the supply system which act on the cross-section of said jack close the valve-disc 29 again and uncover the duct 22; the compartment 11 is thus drained-off through the ducts 32, 22. In fact, any operating or retaining effort on the distribution stem 13 is stopped.
  • the abutment member 14 is applied against the base of the block 2 and thus limits the travel of the diaphragm 10 after having produced the sliding motion and deflection of the valve-discs 9, 8 which have been applied against their respective seats 7, 5 and ensures leak-tightness between the compartments or ports l6, l9, and 16, 23 respectively; the valve then no longer produces any leakage to waste and the raw water is delivered through the outlet 19 after having been softened.
  • the diaphragm 110 is not directly attached to the distribution stem 113 but is only applied against this latter when the chamber 1 11 is put under pressure.
  • the bearing 136 which is located within the seat 105, which separates the chambers 119 and 116 serves to guide the valve-stem at its center.
  • the seat 107 has also been employed for the purpose of guiding the extremity of the distributor; a number of milled grooves 137a, 137b, 1376 have also been formed in said extremity in order to permit the liquid to flow from the chamber 1 17 to the chamber 123 when the valve-disc 109 is not applied against the seat 107.
  • the total cross-sectional area of said milled grooves is intended to be smaller than the cross-sectional area of the port 120 which serves to discharge the chamber 123 to waste.
  • the stem 113 is guided at its extremity 138 within a bearing 139.
  • valve-disc 108a is capable of deformation when the valve-disc 109a is displaced between the seats 107a and 106a provided that the permissible displacement between the seats 104a and 105a is intended to be smaller than that which takes place between the seats 107a and 106a.
  • FIG. 3 clearly shows the difference which can exist between valve-discs 9b of the rigid type and the valvediscs 8b of flexible material; if so required, said valve discs 9b can serve to limit the ranges of travel of the stem and of the valve-discs of type 8b in which a nick 26 has been cut for enhanced flexibility.
  • valve-discs 8a and 9a are capable of sliding along the stem 13a in order to compensate for differences between their respective ranges of travel which may result from defective machining of their respective seats with respect to the displacement carried out by the distributor stem itself.
  • valve in another alternative arrangement, there can be devised for a different type of valve a distribution stem fitted with a number of stepped valve-discs 208a, 208b, 208c and 209, 209a which are maintained in a fixed manner on the shaft 213 between different annular shoulders 239a, 23% and 239C and 239d, the distributor being guided at its extremities and more particularly by means of an extension 238.
  • the valve train can establish in alternate sequence a connection and a separation between the'chambers in which the valve discs travel and the chambers which are located on each side; the positions which are accordingly taken up in turn by the valve train are shown respectively and diagrammatically in FIGS. 12 and 13.
  • FIG. 14 also shows diagrammatically the arrangement of the invention in which a plurality of valve-discs can either open or close a single port which is in communication between two chambers.
  • the assembly of a train of valve-discs on a common shaft as contemplated by the invention results in simplification of manufacture.
  • This makes it possible in particular to obtain the main components which constitute the valves in accordance with the invention by molding of plastic material, for example, without entailing any precision either in machining, molding or assembly.
  • This makes it possible to employ as-molded parts of plastic material in particular and results in the production of valve units which are low in capital cost.
  • the simplification which is achieved in the manufacture of these valves and which includes simplification of assembly and control also secures the advantage of very high operational safety and reliability.
  • a valve comprising a valve housing forming a first pair of spaced annular valve seats and a second pair of spaced annular valve seats all aligned along a common axis, an inlet port between adjacent valve seats of said first and second pairs, an outlet port between said first pair of valve seats, a first fluid flow passage providing communication between said inlet and said outlet port through said adjacent valve seat of said first pair, a second flow passage leading from said inlet port through the adjacent valve seat of said second pair, the space between said second pair of valve seats and through the other valve seat of said first pair to said outlet port, and a third flow passage providing communication between the space between said first pair of valve seats and said second flow passage, and a chamber laterally of the other valve seat of said second pair of valve seats; a first valve disc between said first pair of valve seats and a second valve disc between said second pair of valve seats; a common valve stem carrying said valve discs for movement between the respective valve seats, said valve stem having an extension extending through the other valve seat of said second pair into said chamber, one of said valve
  • said movable dividing means comprises a flexible diaphragm exte ifiiiiaifiifi c fil rll i tili ilh said extension is fixedly connected to said diaphragm.
  • said operating means comprises auxiliary valve means and means cooperating with said auxiliary valve means for moving the same between said first and said second position.
  • valve housing is formed with a bore forming at one end an additional valve seat, an additional chamber adjacent said valve seat and communicating with said inlet port, and a pair of fluid passages respectively providing communication between said compartments and said bore
  • said operating means comprises an auxiliary valve member movable in said bore and carrying at one end thereof extending in said additional chamber an additional valve disc adapted to engage said additional valve seat, said valve member having spaced from said one end a large diameter portion sealingly engaging said bore and between said additional valve disc and said large diameter portion a smaller diameter portion to define with the inner bore surface an annular space
  • valve member being normally held in said first position by the fluid pressure in said additional chamber in which said additional valve disc engages said additional valve seat and in which said annular space provides communication between said pair of fluid passages and therewith between said chambers, and including means for moving said valve member from said first to said second position in which said additional valve disc is spaced from said additional valve seat and said large diameter bore portion of said valve member interrupts communication between said pair of fluid passages.
  • a valve as defined in claim 1 and including an ion exchange resin bed in said second fluid flow passage and brine producing means in said third fluid flow passage.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Multiple-Way Valves (AREA)
US86462A 1969-11-03 1970-11-03 Valves Expired - Lifetime US3683961A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6937680A FR2067401A5 (fr) 1969-11-03 1969-11-03

Publications (1)

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US3683961A true US3683961A (en) 1972-08-15

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US86462A Expired - Lifetime US3683961A (en) 1969-11-03 1970-11-03 Valves

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US (1) US3683961A (fr)
BE (1) BE758012A (fr)
CA (1) CA923011A (fr)
CH (1) CH538622A (fr)
DE (1) DE2054028A1 (fr)
ES (1) ES385029A1 (fr)
FR (1) FR2067401A5 (fr)
LU (1) LU61970A1 (fr)
NL (1) NL7016072A (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818981A (en) * 1972-09-20 1974-06-25 Robertshaw Controls Co Valve construction and system utilizing the same
US3867961A (en) * 1973-11-16 1975-02-25 Calgon Corp Control valve for water conditioners
US4270504A (en) * 1978-09-14 1981-06-02 Colt Industries Operating Corp. Fuel bowl vent
US5693217A (en) * 1994-08-30 1997-12-02 Filterwerk Mann & Hummel Gmbh Fluid circuit with a primary stream filter and a bypass stream centrifuge
US7261127B1 (en) * 2005-11-02 2007-08-28 Sarkis Oundjian Modified push-pull valve for filter systems and method
US20100116369A1 (en) * 2008-11-10 2010-05-13 Access Business Group International Llc Faucet valve system
US20100139779A1 (en) * 2008-11-10 2010-06-10 Access Business Group International Llc Valve system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19530383A1 (de) * 1995-08-18 1997-02-20 Bwt Wassertechnik Gmbh Verfahren und Einrichtung zum Regenerieren einer nach dem Ionenaustauscherprinzip arbeitenden Wasseraufbereitungsanlage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1679614A (en) * 1925-07-27 1928-08-07 Koehring Co Multiple-tank water-supply mechanism
US2741264A (en) * 1951-12-05 1956-04-10 York Corp Reversing valves
US3138553A (en) * 1960-09-16 1964-06-23 Howard S Mollring Automatic cycling valve for fluid treatment systems

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1679614A (en) * 1925-07-27 1928-08-07 Koehring Co Multiple-tank water-supply mechanism
US2741264A (en) * 1951-12-05 1956-04-10 York Corp Reversing valves
US3138553A (en) * 1960-09-16 1964-06-23 Howard S Mollring Automatic cycling valve for fluid treatment systems

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818981A (en) * 1972-09-20 1974-06-25 Robertshaw Controls Co Valve construction and system utilizing the same
US3867961A (en) * 1973-11-16 1975-02-25 Calgon Corp Control valve for water conditioners
US4270504A (en) * 1978-09-14 1981-06-02 Colt Industries Operating Corp. Fuel bowl vent
US5693217A (en) * 1994-08-30 1997-12-02 Filterwerk Mann & Hummel Gmbh Fluid circuit with a primary stream filter and a bypass stream centrifuge
US7261127B1 (en) * 2005-11-02 2007-08-28 Sarkis Oundjian Modified push-pull valve for filter systems and method
US20100116369A1 (en) * 2008-11-10 2010-05-13 Access Business Group International Llc Faucet valve system
US20100139779A1 (en) * 2008-11-10 2010-06-10 Access Business Group International Llc Valve system
US8375970B2 (en) 2008-11-10 2013-02-19 Access Business Group International Llc Valve system
US8443825B2 (en) 2008-11-10 2013-05-21 Access Business Group International Llc Faucet valve system

Also Published As

Publication number Publication date
DE2054028A1 (de) 1971-05-13
CH538622A (fr) 1973-06-30
CA923011A (en) 1973-03-20
NL7016072A (fr) 1971-05-05
ES385029A1 (es) 1973-03-16
FR2067401A5 (fr) 1971-08-20
BE758012A (fr) 1971-04-26
LU61970A1 (fr) 1971-05-10

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