US3802807A - Pump - Google Patents
Pump Download PDFInfo
- Publication number
- US3802807A US3802807A US00259288A US25928872A US3802807A US 3802807 A US3802807 A US 3802807A US 00259288 A US00259288 A US 00259288A US 25928872 A US25928872 A US 25928872A US 3802807 A US3802807 A US 3802807A
- Authority
- US
- United States
- Prior art keywords
- pumping
- liquid
- compartment
- valve
- valve chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
- F04B53/141—Intermediate liquid piston between the driving piston and the pumped liquid
-
- 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
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
Definitions
- a flushing liquid passageway is provided communicat- 3,298 319 l/l967 Savage; 417/430 ing into the lower Pomo" of the Pumping 2444:5216 7/1948 Wuench 417/435
- the Pumping Compartment is free of other q- 1,313,z45 3/1919 Andrews 4 7 430 uid communication for,preventing introduction of air 3,559,644 2/1971 Stoft 4l7/435 into the pumping compartment and the passageway 1,599,625 9/1926 Whitlock 92/87 especially while the pump is stopped.
- Diaphragm pumps of the type having a sealed pumping compartment are well known, being shown and described, for example in U.S. Pat. No. 2,741,187.
- the present invention accomplishes the above objects by providing in a diaphragm pump having an enclosed sealed pumping compartment with an uppermost edge portion, pumping valve means including a pair of one-way'valve elements, such as ball valves, providing a valve chamber therebetween, said one-way valve elements being spaced from one another for flow of liquid through said chamber, preferably in an upward direction, pumping liquid passageway means communicating between said valve chamber and only said uppermost edge portion of said pumping compartment sloping in an upward direction from said uppermost edge portion to said valve chamber, for gravity retention of liquid in said pumping compartment and flushing liquid passageway means communicating into the lower portion of the pumping compartment and valve means therefor, said pumping means being free of other liquid communication for preventing introduction of air into said pumping compartment'and passageway means. Timing means may be provided for said flushing liquid valve means.
- FIG. 1 is an exploded isometric view of the pump of the invention.
- FIG. 2 is a cross sectional elevation thereof.
- the diaphragm pump includes a main housing of a cast aluminum alloy or other suitable material having a circular boss 12 on one side wall to which the pump housing is secured.
- the pump housing comprises a circular, corrosion-resistant base member 14 in the form of a shallow cup secured by stainless steel screws 16 to the boss 12.
- a reciprocable rod 17 extends slidably through the boss 12 and a hole in the center of the member 14 to vibrate a diaphragm 20 which is mounted on or engaged by the end screw 24 by which the diaphragm is detachably secured to the rod.
- the margin 28 of the diaphragm extends radially from the rim of the disk 22 and is securely gripped between the annular end face of the base member 14 and the rim of a cylindrical block 30 of transparent or opaque plastic material which, with the member 14, forms the pump housing.
- This block has a central recess at its inner end forming an enclosed sealed pumping compartment 32 of which the diaphragm 20 is a vibrating wall.
- the interior diameter of the block 30 at its recessed end is equal to that of the number 14.
- Screws 40 and 46 of stainless steel or other'suitable corrosion-resistant material pass through the margin of the block 30 and diaphragm margin 28 and into the base member 14 to secure these parts together. The screws 40 and 46, or the holes for them, do not extend through the base member 14.
- the rim of the member 14 is preferably but not necessarily recessed to be fitted by the margin 28 of the diaphragm.
- the diaphragm forms with the member 14 a chamber 42 from the bottom of which a vent 44 extends to the outside.
- the base member 14 is preferably of a thermosetting synthetic resin of the phenol-formaldehyde type which is impervious to corrosive liquids, is to a considerable degree heat resistant, and is an effective heat insulator.
- the chamber 42 will be free of the liquid which is being pumped by vibration of the diaphragm, but if any such liquid should get into this chamber either by seepage around the screws 40 or by rupture of the diaphragm it will drain out through the vent 44.
- the base member 14 thus completely protects the metal housing 10 from corrosive liquid and also protects the transparent or opaque housing member 30 from the heat generated by the electric motor (not shown) enclosed in the main housing 10.
- the above described diaphragm pump is provided with a novel arrangement of valves and a connecting passageway for gravity retention of liquid in pumping compartment 32, even when the pump is stopped, so that priming upon restarting is unnecessary and flushing of said compartment may be accomplished.
- the liquid being pumped does not pass through the pumping compartment, so contamination thereby is reduced, as is especially important in the pumping of slurries.
- Valve housing 50 has mounted therein upper and lower one-way valve elements, providing an'upper outlet connection 54 and a lower inlet connection 58, respectively.
- Said valve elements include upper and lower seat elements 52 and 56, respectively, and upper and lower ball elements 53 and 57, respectively, said upper and lower valve elements being vertically spaced from one another to provide a valve chamber 55 therebetween.
- a pumping liquid passageway is provided communi' cating between valve chamber 55 and only the uppermost edge portion of pumping compartment 32, said passageway sloping in an upward direction to said valve chamber for gravity retention of liquid therein.
- Such pumping liquid passageway preferably includes a passage 62 through block 30, lsoping upwardly from the uppermost peripheral edge portion of pumping compartment 32 and communicating with an upwardly sloping passage 64 in valve housing 50 opening into vaive chamber 55.
- a flushing liquid passageway communicating vertically into the lower end of pumping compartment 32. Said flushing liquid passageway includes a vertical passage 31 through block 30 and a right angle passage 33 through connector 35.
- Connector 35 is attached to block 30 by hollow bolt 37 which also can be removed to provide a vertical drain passageway into the bottom of pumping compartment 32 through passage 31.
- a flushing valve 41 preferably of the electrically operated type, is connected to connector 35 by a right angle fitting 39. Said valve may desired.
- the pump of the invention is mounted in a vertical position, as shown, and, preferably, for upward flow of liquid through the valve chamber 55.
- the pumping chamber 32 and theupwardly sloping passageway communicating with valve chamber 55 full of liquid, stopping the pump, even to the extent of introducing air into valve chamber 55, will not result in losing prime, since the pumping compartment does not drain and hence introduction of air into the pumping compartment and connecting passageway is avoided.
- the introductory liquid to a large extent remains in the pumping compartment and passageway, with the liquid in the latter simply moving back andforth as shown by the double headed arrow 65 in FIG.
- valve 41 can be opened, either periodically by timer 43 or otherwise to accomplish this by introducing liquid to i the inlet of said valve, as indicated by arrow 45. Drain- I .age of the pumping compartment can be accomplished by removing bolt 37.
- the pump can readily be disassembled for draining and cleaning by removing its screws 40 and 46.
- a diaphragm pump having an enclosed sealed pumping compartment with an uppermost edge portion pumping valve means including a pair of one-way valve elements providing a valve chamber therebetween' said one-way valve elements being vertically spaced from one another and arranged for upward flow of liquid through said valve chamber pumping liquid passageway means communicating between said valve chamber and only said uppermost edge portion of said pumping compartment, sloping in an upward direction from said upper most edge portion to said valve chamber, for gravity retention of liquid in said pumping compartment and passageway means flushing liquid passageway means communicating into the lower portion of said pumping compartment flushing valve means connected to said flushing liquid passageway means, and timing means operably connected to said flushing valve means, I said pumping means being free of other liquid communication for preventing introduction of air into said pumping compartment and passageway means.
- a diaphragm pump having a mouable diaphragm and a pump housing defining a pumping compartment with an uppermost edge'portion
- pumping valve means including a pair of one-way valve elements providing a valve chamber therebetween said one-way valve elements being vertically spaced from one another and arranged for upward flow of liquid through said valve chamber pumping liquid passageway means communicating between said valve chamber and only said uppermost edge portion of said pumping compartment sloping in an upward direction from said uppermost edge portion to said valve chamber, for gravity retention of liquid in said pumping compartment and passageway means v flushing liquid passageway means providing communication between the lower portion of said pumping compartment and the exterior of said pump housing, and
- flushing valve means located exterior to said pump housing and connected to said flushing liquid passageway means and to an external source of flushing liquid said pumping means being free of other liquid communication for preventing introduction of air into said pumping compartment and passageway means.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
Claims (2)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00259288A US3802807A (en) | 1972-06-02 | 1972-06-02 | Pump |
JP47071344A JPS4927903A (en) | 1972-06-02 | 1972-07-18 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00259288A US3802807A (en) | 1972-06-02 | 1972-06-02 | Pump |
Publications (1)
Publication Number | Publication Date |
---|---|
US3802807A true US3802807A (en) | 1974-04-09 |
Family
ID=22984325
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00259288A Expired - Lifetime US3802807A (en) | 1972-06-02 | 1972-06-02 | Pump |
Country Status (2)
Country | Link |
---|---|
US (1) | US3802807A (en) |
JP (1) | JPS4927903A (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4093397A (en) * | 1976-04-15 | 1978-06-06 | Lovelady Grady R | High vacuum pump |
US4177016A (en) * | 1978-04-17 | 1979-12-04 | Bechtel International Corporation | Self cleaning manifold connection for slurry pump |
US4278406A (en) * | 1979-11-07 | 1981-07-14 | R. W. Beckett Corporation | Electromagnetic pump |
US4411603A (en) * | 1981-06-24 | 1983-10-25 | Cordis Dow Corp. | Diaphragm type blood pump for medical use |
GB2192673A (en) * | 1986-06-02 | 1988-01-20 | Thomas Leslie Seaborne | Improved diaphragm milk pump |
US4746278A (en) * | 1987-08-26 | 1988-05-24 | Henderson James K | Displacement pump designed for cleaning |
EP0343773A1 (en) * | 1988-03-23 | 1989-11-29 | Kabushiki Kaisha Little Rock | Fluid pump apparatus and valve device |
DE3937847C1 (en) * | 1989-11-14 | 1991-02-28 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung Ev, 8000 Muenchen, De | |
US6105610A (en) * | 1998-02-13 | 2000-08-22 | Liquid Metronics Incorporated | Cartridge valve with triple sequential seal |
US6524085B2 (en) * | 2000-06-29 | 2003-02-25 | Mitsuba Corporation | Venting arrangement for a surface washer pump |
US20110135514A1 (en) * | 2008-08-14 | 2011-06-09 | Spx Flow Technology Norderstedt Gmbh | Pump Device |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH036617Y2 (en) * | 1985-10-28 | 1991-02-19 | ||
JPS62108380U (en) * | 1985-12-26 | 1987-07-10 | ||
JPH0544371Y2 (en) * | 1988-07-12 | 1993-11-10 |
-
1972
- 1972-06-02 US US00259288A patent/US3802807A/en not_active Expired - Lifetime
- 1972-07-18 JP JP47071344A patent/JPS4927903A/ja active Pending
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4093397A (en) * | 1976-04-15 | 1978-06-06 | Lovelady Grady R | High vacuum pump |
US4177016A (en) * | 1978-04-17 | 1979-12-04 | Bechtel International Corporation | Self cleaning manifold connection for slurry pump |
US4278406A (en) * | 1979-11-07 | 1981-07-14 | R. W. Beckett Corporation | Electromagnetic pump |
US4411603A (en) * | 1981-06-24 | 1983-10-25 | Cordis Dow Corp. | Diaphragm type blood pump for medical use |
GB2192673A (en) * | 1986-06-02 | 1988-01-20 | Thomas Leslie Seaborne | Improved diaphragm milk pump |
US4746278A (en) * | 1987-08-26 | 1988-05-24 | Henderson James K | Displacement pump designed for cleaning |
EP0343773A1 (en) * | 1988-03-23 | 1989-11-29 | Kabushiki Kaisha Little Rock | Fluid pump apparatus and valve device |
EP0390298A2 (en) * | 1988-03-23 | 1990-10-03 | Kabushiki Kaisha Little Rock | Fluid pump apparatus |
EP0390298A3 (en) * | 1988-03-23 | 1990-10-31 | Kabushiki Kaisha Little Rock | Fluid pump apparatus |
DE3937847C1 (en) * | 1989-11-14 | 1991-02-28 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung Ev, 8000 Muenchen, De | |
EP0427988A1 (en) * | 1989-11-14 | 1991-05-22 | Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V. | Membrane pump |
US6105610A (en) * | 1998-02-13 | 2000-08-22 | Liquid Metronics Incorporated | Cartridge valve with triple sequential seal |
US6524085B2 (en) * | 2000-06-29 | 2003-02-25 | Mitsuba Corporation | Venting arrangement for a surface washer pump |
US20110135514A1 (en) * | 2008-08-14 | 2011-06-09 | Spx Flow Technology Norderstedt Gmbh | Pump Device |
Also Published As
Publication number | Publication date |
---|---|
JPS4927903A (en) | 1974-03-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: AMF CUNO INC., 400 RESEARCH PARKWAY, MERIDEN, CT. Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AMF INCORPRATED, A CORP. OF NJ;REEL/FRAME:004499/0451 Effective date: 19851111 |
|
AS | Assignment |
Owner name: SPECIALTY MATERIALS INC., 400 RESEARCH PARKWAY, ME Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AMF CUNO INC., A CORP OF DE.;REEL/FRAME:004528/0383 Effective date: 19860124 |
|
AS | Assignment |
Owner name: CHEM-TECH INTERNATIONAL 92 BOLT ST., LOWELL, MA A Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CUNO INC.,;REEL/FRAME:004705/0047 Effective date: 19860801 Owner name: CHEM-TECH INTERNATIONAL A CORP. OF DE,MASSACHUSET Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CUNO INC.,;REEL/FRAME:004705/0047 Effective date: 19860801 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED FILE - (OLD CASE ADDED FOR FILE TRACKING PURPOSES) |
|
AS | Assignment |
Owner name: HELLER FINANCIAL, INC., A DE CORP. Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CHEM TECH INTERNATIONAL, INC.;REEL/FRAME:004862/0569 Effective date: 19880224 |