WO1989010485A1 - Pneumatic valve, particularly for control of compressed-air-operated membrane pumps - Google Patents
Pneumatic valve, particularly for control of compressed-air-operated membrane pumps Download PDFInfo
- Publication number
- WO1989010485A1 WO1989010485A1 PCT/SE1989/000212 SE8900212W WO8910485A1 WO 1989010485 A1 WO1989010485 A1 WO 1989010485A1 SE 8900212 W SE8900212 W SE 8900212W WO 8910485 A1 WO8910485 A1 WO 8910485A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- plunger
- valve body
- air
- valve
- control
- Prior art date
Links
- 239000012528 membrane Substances 0.000 title claims abstract description 15
- 238000013016 damping Methods 0.000 claims abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- 230000035939 shock Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 2
- 229920002907 Guar gum Polymers 0.000 claims 1
- 235000010417 guar gum Nutrition 0.000 claims 1
- 239000006096 absorbing agent Substances 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000005060 rubber Substances 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L25/00—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means
- F01L25/02—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means by fluid means
- F01L25/04—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means by fluid means by working-fluid of machine or engine, e.g. free-piston machine
- F01L25/06—Arrangements with main and auxiliary valves, at least one of them being fluid-driven
- F01L25/063—Arrangements with main and auxiliary valves, at least one of them being fluid-driven the auxiliary valve being actuated by the working motor-piston or piston-rod
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/06—Pumps having fluid drive
- F04B43/073—Pumps having fluid drive the actuating fluid being controlled by at least one valve
- F04B43/0736—Pumps having fluid drive the actuating fluid being controlled by at least one valve with two or more pumping chambers in parallel
-
- 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
- Y10T137/86574—Supply and exhaust
- Y10T137/86582—Pilot-actuated
- Y10T137/86606—Common to plural valve motor chambers
-
- 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
- Y10T137/86574—Supply and exhaust
- Y10T137/86622—Motor-operated
- Y10T137/8663—Fluid motor
Definitions
- Pneumatic value particularly for control of compressed-air-operated membrane pumps .
- the present invention relates to a pneumatic valve designed to control particularly a compressed-air-operated membrane pump and is set forth in detail in the preamble of patent claim 1 .
- US-A 3 465 686 discloses an air—operated hydraulic pump using a shuttle valve, the shuttle of which is effected in all positions by very strong permanent magnets mounted in the valve housing adjacent the ends of the shuttle.
- the idea with this valve is to influence the shuttle in any position, i.e. even any intermediate position, so that the shuttle operates fully from end to end.
- the magnets are spaced from the ends of the shuttle. This is obligatory and extremely critical, as a gap as narrow as 0.5 mm creates only 1/10 of the retaining power of a gap equal to 0 mm, i.e. when physical contact has been estab ⁇ lished between the shuttle and one of the permanent mag ⁇ nets.
- control air is designed to move the shuttle from one end position to the other at a pressure of ten pounds per square inch, it will certainly not when physi ⁇ cal contact has been established between the shuttle and a permanent magnet and a releasing force of one hundred pounds per square inch will be required. It goes without saying that this previously known valve requires very accu ⁇ rate tolerances and will seize to function whenever there is a slight play or, after some time of operation, a cer ⁇ tain natural wear and tear.
- this valve will create a high level of noise, as the strong magnets will make the shuttle bounce from one seat on to the other, in which connection 0-rings alledgedly intended to reduce noise necessarily must render the extre ⁇ mely important accurate size of said gap between shuttle and permanent magnets variable and thus creating a non-de ⁇ sired varying influence on the retaining power due to the material used for the O-rings and not to forget varying con ⁇ ditions of operation and wear and tear.
- the object of the invention is to improve and develop valves already known in this field, in order to avoid in particular the aforementioned drawbacks as well as other drawbacks and achieve high reliability, which will be ex ⁇ plained in more detail in the following description.
- Fig. 1 shows a conventional pneumatic valve, mainly in a diametrical longitudinal section, in one of two functional positions;
- Fig. 2 shows a corresponding view of the same valve, its plunger being placed in an ineffective or locking inter ⁇ mediate position;
- Fig. 3 is a view which corresponds to Fig. 1 and shows a valve according to the present invention
- Fig. 4 is a view which corresponds to Fig. 1 and shows another embodiment of a valve according to the invention
- Fig. 5 is a perspective view of a preferred embodiment of a plunger, designed to form a part of the valves according to Fig. 3 and 4;
- Fig. 6 shows a partly schematic partial section of a memb ⁇ rane pump r provided with a valve according to the invention.
- the present invention relates primarily to a main valve, i.e. a 3-way/5-gate-valve, which is pneumaticly controlled and designed e.g. for compressed-air-operated membrane pumps.
- Said valve mainly comprises a valve body 1, body ends 2, a plunger 5 and five connection gates 8, 9, 10, 11 and 12, which are disposed in said valve body, as well as a control air gate 13 and 14 respectively in each one of said two ends 2 respectively. Said ends are attached to the valve body by means of screws 3.
- Fig. 1 shows a conventional valve with a presently used design, plunger 5 being disposed in a valve can 4 having requisite O-ring seals 6 and 7 respectively.
- Plunger 5 is actuated through gate 13 or 14 by a compressed-air-im ⁇ pulse, which subsequently to the work done is exhausted.
- Fig. 1 shows plunger 5 in its left position. Thus, it has been actuated by compressed air, which has been fed through gate 13.
- the plunger reaches its end position, its movement is damped, e.g. by means of a stop element, name ⁇ ly a shock absorber rubber 15. In this position the main air quantity is fed into the valve through input gate 8, out through output gate 9 and then to the pump membrane in order to perform the pumping.
- Exhaust gate 10 which is connected to e.g. a second air chamber of a compressed-air-operated membrane pump, com ⁇ municates with the exterior air and the air is exhausted through a recess 21 in plunger 5 and a ventilating gate 11.
- a control valve which is ac ⁇ tuated by the end positions of the membranes. Additional embodiments are possible, in which said control valve is actuated e.g. by the position of the pump shaft and the pump shaft is in that case the shaft which connects the two membranes.
- a compressed-air-operated membrane pump its capacity and its lifting height are controlled by means of the amount of compressed air and its pressure, when it appears at gate 8.
- a branching from gate 8 is provided, which feeds compressed air to said control valve, i.e. the same pressure is used to operate the pump as to control main valve plunger 5.
- Fig. 3 does not in ⁇ volve any damping of plunger 5 against ends 2, since shock absorber rubbers 15 have been replaced by a permanent mag ⁇ net and a soft iron core.
- said two parts can be designed in such a way that no strength problems will arise, but on the other hand the valve will emit a har ⁇ der sound, which may prove to be troublesome, particularly if large valves are used.
- the inven ⁇ tion permanent magnet 16 is inserted deeper into plunger 5 and in this way a circular cavity 17 is formed in the ends of the plunger. See Fig. 4.
- This cavity is adapted in such a way, on comparison with previous embodi ⁇ ments, that soft iron core 15 is replaced with a somewhat thicker core, which fits into cavity 17. Between core 15 and plunger 5 there is formed a narrow air gap 18, through which the air trapped in cavity 17 is to pass. This gap is adapted to provide an air-.cushion-damping here and in this way the above-mentioned drawbacks with an elevated sound level disappears.
- a permanent magnet or a soft iron core 16 is fitted into the two plunger ends, and the free end surface of this magnet or core preferably is positioned in the same plane as the respective plunger ends.
- Member 16 is surrounded by a projection 19, which protrudes from said end surfaces and comprises a cylindrical tube fast ⁇ ened to the plunger end and made of e.g. aluminum. In this way a cavity 20 is formed, which can cooperate with mem ⁇ ber 15 in the way described above in order to provide a so called air-cushion-damping.
- plunger end itself may be so closely fitted into a recess in said ends, that a damping is ob ⁇ tained.
- FIG. 6 A preferred field of application for a valve according to the present invention is illustrated in fig. 6.
- the fol ⁇ lowing references numerals are used: 101 a membrane, 102 a membrane shaft, 103 a nut, 104, 113 mounting plates, 114 a control valve, 105 a control valve shaft, 106 a con ⁇ trol valve operating shaft, 107 a pump body, 108 a con ⁇ trol valve outlet, 109 a control valve connection, 110 a control valve connection, 111, 112 a brancing duct.
- the air flow passages are shown by arrows and the mode of ope ⁇ ration of the pump, which is already known, probably is easy to understand.
- a valve designed in this way will accordingly not prevent a pump from wor ⁇ king in very low regions of pressure and capacity , which often is desirable if not crucial.
- a retaining force equal to 10 mbar will be suffi ⁇ cient for a valve according to the invention.
- the plunger When in such a case the plunger has been released from its retair ned end position, it can move about freely without the magnets exerting any influence on same. Beyond a very nar ⁇ row gap of up to 0,5 or 1,0 mm, the power of the magnets is so small, that the friction of the plunger in relation to a surrounding sleeve is bigger.
- the invention conceived the idea, that a comparatively low release- treshold is all what matters, and that everything consi ⁇ derably stronger than so will be detrimental to the desired mode of operation of a valve of this kind and even counter ⁇ act if not all but som objectives.
- the valve 'according to the invention will be utmost silent in operation and gain a long life. Needless to say, that in manufacture and assem- blance extreme tolerances won't have to be observed.
- valve is of course not limited to compressed-air-operated membrane pumps, but the valve is always expedient to use in e.g. vibrating, shaking machines and various equipments, in which most reduced air pressures are to be used.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Magnetically Actuated Valves (AREA)
- Fluid-Driven Valves (AREA)
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT89904647T ATE79444T1 (en) | 1988-04-18 | 1989-04-18 | PNEUMATIC VALVE, IN PARTICULAR FOR CONTROL OF DIAPHRAGM PUMPS ACTUATED WITH COMPRESSED AIR. |
KR1019890702363A KR900700756A (en) | 1988-04-18 | 1989-04-18 | Air valve for operation of thin film pump operated by compressed air |
US07/598,725 US5377719A (en) | 1988-04-18 | 1989-04-18 | Pneumatic valve, particularly for control of compressed-air-operated membrane pumps |
DE1989602474 DE68902474T2 (en) | 1988-04-18 | 1989-04-18 | PNEUMATIC VALVE, IN PARTICULAR FOR CONTROLLING DIAPHRAGM PUMPS ACTUATED BY COMPRESSED AIR. |
DK236290A DK236290A (en) | 1988-04-18 | 1990-10-01 | PNEUMATIC VALVE, ISAIR FOR CONTROL OF PRESSURE AIR MEMBRANE PUMPS |
FI905083A FI99047C (en) | 1988-04-18 | 1990-10-16 | Pneumatic valve, especially for controlling compressed air driven diaphragm pumps |
NO904479A NO170646C (en) | 1988-04-18 | 1990-10-17 | PNEUMATIC VALVE |
SG46293A SG46293G (en) | 1988-04-18 | 1993-04-14 | Pneumatic valve,particularly for control of compressed-air-operated membrane pumps |
HK93995A HK93995A (en) | 1988-04-18 | 1995-06-15 | Pneumatic valve, particularly for control of compressed-air-operated membrane pumps |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8801423A SE8801423D0 (en) | 1988-04-18 | 1988-04-18 | PNEUMATIC VALVE FOR CONTROL OF COMPRESSIVE AIR MEMBRANE PUMPS |
SE8801423-8 | 1988-04-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1989010485A1 true WO1989010485A1 (en) | 1989-11-02 |
Family
ID=20372038
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE1989/000212 WO1989010485A1 (en) | 1988-04-18 | 1989-04-18 | Pneumatic valve, particularly for control of compressed-air-operated membrane pumps |
Country Status (13)
Country | Link |
---|---|
US (1) | US5377719A (en) |
EP (1) | EP0412093B1 (en) |
JP (1) | JPH04500549A (en) |
KR (2) | KR930010810B1 (en) |
AU (1) | AU631790B2 (en) |
CA (1) | CA1331849C (en) |
DK (1) | DK236290A (en) |
FI (1) | FI99047C (en) |
HK (1) | HK93995A (en) |
HU (1) | HU209611B (en) |
SE (1) | SE8801423D0 (en) |
SG (1) | SG46293G (en) |
WO (1) | WO1989010485A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0480192A1 (en) * | 1990-10-08 | 1992-04-15 | ALMATEC Technische Innovationen GmbH | Double-diaphragm pump |
EP0727580A1 (en) * | 1995-02-14 | 1996-08-21 | Itt Manufacturing Enterprises, Inc. | Air-actuated, reciprocating pump operating, shuttle valve arrangement |
CN103511229A (en) * | 2013-10-08 | 2014-01-15 | 杭州大潮石化设备有限公司 | Pump head integrated installing structure of diaphragm type reciprocation pump |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29710807U1 (en) * | 1997-06-19 | 1997-08-28 | Wagner Wilhelm Wiwa | Air piston engine |
US6895988B2 (en) * | 2002-09-10 | 2005-05-24 | Grant Airmass Corporation | Self-actuating control valve for a bed pad or seat pad |
CL2004000366A1 (en) * | 2003-02-26 | 2005-01-07 | Pharmacia Corp Sa Organizada B | USE OF A COMBINATION OF A QUINASA P38 INHIBITING DERIVED COMPOUND OF PIRAZOL, AND AN ACE INHIBITOR TO TREAT RENAL DYSFUNCTION, CARDIOVASCULAR AND VASCULAR DISEASE, RETINOPATHY, NEUROPATIA, EDOTEL, INSOTUNATIO OPINION. |
EP1760376B1 (en) * | 2005-08-31 | 2007-12-12 | FESTO AG & Co | Pilot operated impulse valve |
US20100264348A1 (en) * | 2009-04-20 | 2010-10-21 | Food Global Technologies LLC | Dynamic Bore Plug Assembly |
KR200476242Y1 (en) * | 2010-09-14 | 2015-02-11 | 대우조선해양 주식회사 | Ventilator for supplying compressed air with timer |
WO2014106236A1 (en) * | 2012-12-31 | 2014-07-03 | Vanderbilt University | Directional control valve with spool delay mechanism |
US11746771B2 (en) * | 2021-04-16 | 2023-09-05 | Teryair Equipment Pvt. Ltd. | Actuator valve of an air operated double diaphragm pump |
WO2023049173A1 (en) * | 2021-09-24 | 2023-03-30 | Elemental Scientific, Inc. | Magnetically coupled valve |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3465686A (en) * | 1967-10-16 | 1969-09-09 | Francis A Nugier | Air operated hydraulic pump |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3304126A (en) * | 1965-02-15 | 1967-02-14 | Gorman Rupp Co | Material handling apparatus and methods |
US3455329A (en) * | 1966-08-05 | 1969-07-15 | Gabriel Roth | Pneumatic indicating device |
US3592230A (en) * | 1969-04-23 | 1971-07-13 | Self Matic Valves Corp | Back pressure directional control valves employing pilot air of low volume and pressure |
US3847371A (en) * | 1972-10-30 | 1974-11-12 | Sayler R | Spool valve |
DE2729482A1 (en) * | 1977-06-30 | 1979-01-11 | Herion Werke Kg | MULTI-WAY SWITCHING VALVE |
ZA837941B (en) * | 1982-10-30 | 1984-06-27 | Beloit Walmsley Ltd | Valves |
-
1988
- 1988-04-18 SE SE8801423A patent/SE8801423D0/en unknown
-
1989
- 1989-04-17 CA CA 596856 patent/CA1331849C/en not_active Expired - Fee Related
- 1989-04-18 EP EP19890904647 patent/EP0412093B1/en not_active Expired - Lifetime
- 1989-04-18 KR KR1019890702363A patent/KR930010810B1/en active
- 1989-04-18 KR KR1019890702363A patent/KR900700756A/en not_active IP Right Cessation
- 1989-04-18 WO PCT/SE1989/000212 patent/WO1989010485A1/en active IP Right Grant
- 1989-04-18 JP JP1504246A patent/JPH04500549A/en active Pending
- 1989-04-18 HU HU892938A patent/HU209611B/en not_active IP Right Cessation
- 1989-04-18 AU AU34207/89A patent/AU631790B2/en not_active Ceased
- 1989-04-18 US US07/598,725 patent/US5377719A/en not_active Expired - Lifetime
-
1990
- 1990-10-01 DK DK236290A patent/DK236290A/en not_active Application Discontinuation
- 1990-10-16 FI FI905083A patent/FI99047C/en not_active IP Right Cessation
-
1993
- 1993-04-14 SG SG46293A patent/SG46293G/en unknown
-
1995
- 1995-06-15 HK HK93995A patent/HK93995A/en not_active IP Right Cessation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3465686A (en) * | 1967-10-16 | 1969-09-09 | Francis A Nugier | Air operated hydraulic pump |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0480192A1 (en) * | 1990-10-08 | 1992-04-15 | ALMATEC Technische Innovationen GmbH | Double-diaphragm pump |
EP0727580A1 (en) * | 1995-02-14 | 1996-08-21 | Itt Manufacturing Enterprises, Inc. | Air-actuated, reciprocating pump operating, shuttle valve arrangement |
CN103511229A (en) * | 2013-10-08 | 2014-01-15 | 杭州大潮石化设备有限公司 | Pump head integrated installing structure of diaphragm type reciprocation pump |
CN103511229B (en) * | 2013-10-08 | 2016-01-20 | 杭州大潮石化设备有限公司 | Diaphragm-type reciprocating pump pump head integrated form mounting structure |
Also Published As
Publication number | Publication date |
---|---|
FI99047B (en) | 1997-06-13 |
HU892938D0 (en) | 1992-01-28 |
HUT62680A (en) | 1993-05-28 |
SG46293G (en) | 1993-06-25 |
EP0412093A1 (en) | 1991-02-13 |
KR930010810B1 (en) | 1993-11-11 |
HU209611B (en) | 1994-09-28 |
CA1331849C (en) | 1994-09-06 |
SE8801423D0 (en) | 1988-04-18 |
KR900700756A (en) | 1990-08-16 |
FI905083A0 (en) | 1990-10-16 |
AU631790B2 (en) | 1992-12-10 |
HK93995A (en) | 1995-06-23 |
DK236290D0 (en) | 1990-10-01 |
JPH04500549A (en) | 1992-01-30 |
DK236290A (en) | 1990-10-01 |
FI99047C (en) | 1997-09-25 |
AU3420789A (en) | 1989-11-24 |
US5377719A (en) | 1995-01-03 |
EP0412093B1 (en) | 1992-08-12 |
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