US3440970A - Diaphragm pump - Google Patents
Diaphragm pump Download PDFInfo
- Publication number
- US3440970A US3440970A US639111A US3440970DA US3440970A US 3440970 A US3440970 A US 3440970A US 639111 A US639111 A US 639111A US 3440970D A US3440970D A US 3440970DA US 3440970 A US3440970 A US 3440970A
- Authority
- US
- United States
- Prior art keywords
- diaphragm
- hose
- pump
- casing
- diaphragm pump
- 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
- 210000000188 diaphragm Anatomy 0.000 description 24
- 239000007788 liquid Substances 0.000 description 10
- 239000004743 Polypropylene Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
- F04B43/10—Pumps having fluid drive
-
- 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
- F04B43/0009—Special features
- F04B43/0054—Special features particularities of the flexible members
- F04B43/0072—Special features particularities of the flexible members of tubular flexible members
Definitions
- hose pumps which contain mechan ical components, such as cams, etc., which convey the liquid in the hoses in successive pulsating surges.
- mechan ical components such as cams, etc.
- expandable materials must be selected for the hoses.
- pressures are high (i.e. 2840 p.s.i.) the range of applications is limited and require elaborate safeguards to insure good sealing and trouble free service.
- a still further object is to provide a diaphragm pump as above for particular use in an airless transport environment.
- FIGURE 1 is an elevation view of the hose diaphragm portion and its casing of the pump, partially in section.
- FIGURE 2 is a cross-sectional view taken along line 2-2 of FIGURE 1.
- FIGURE 3 is a view similar to that of FIGURE 2 but with the hose diaphragm in expanded operating position.
- the drawing in greater particularity 6 indicates a cylindrical casing which is pressure resistant.
- the casing 6 contains the motion generating mechanism for the liquid to be pumped.
- This mechanism includes a diaphragm 1 in the form of a hose 2 longitudinally oriented within the cylindrical casing 6.
- the hose 2 is connected at one end to an inlet port 7 by means of a union 8.
- This hose is made of an elastomeric material, preferably a plastic such as polyamide or polypropylene.
- the legs of strip 5a are contained within and in sliding contact with the legs of strip 5b.
- short cylindrically shaped cushions 4 preferably made of rubber, to protect the springs 3 and strips 5a and 512 from excessive wear and noise.
- the casing 6 has an inlet and outlet at opposite ends.
- the inlet 10 permits the liquid to be pumped to enter the casing 6 about the hose diaphragm 1 and then the liquid is discharged through the outlet 11.
- the inlet 10 is at the end of the casing remote from the end containing the cylinder port 7.
- the outlet 11 is closed to the delivery or atomizing portion of the entire system, and since it is also at the same end of the casing as cylinder port 7 this makes for greater elliciency in the entire unit.
- the liquid to be pumped is drawn into inlet 10.
- the hose at this time is relaxed in that the hairpin springs 3 have their legs extended and pushing against the protective strips 5a and 5b to slidingly separate them as far as the hose 2 permits.
- the hose has a cross-sectional configuration which is oval in shape.
- the pressurizing medium is then forced through the cylinder port 7 into the hose 2 changing the cross-section of the hose 2 to a circle and simultaneously foreshortening the extent of the strips 5a and 5b.
- the result is that the area A between the hose 2 and the casing 6 is decreased until the area between the hose and casing is at a minimum as shown by A1 in FIGURE 3.
- This decrease in area causes the liquid to be pumped, to be forced out of outlet 11.
- the pressurizing medium pressure is then relieved permitting the hose diaphragm to restore to its shape as shown in FIGURE 2.
- the pumping cycle is then repeated.
- a high pressure diaphragm pump comprising:
- said springs 3 are shaped as hairpin shaped pins and are stacked and oriented longitudinally within said diaphragm to urge said diaphragm into said oval configuration.
Description
A ril 29, 169 WAGNER 3,440,970
DIAPHRAGM PUMP Filed May 17, 1967 INVENTOR JOSEF WAGNER ATT-ORNEY United States Patent 3,440,970 DIAPHRAGM PUMP Josef Wagner, 7991 Friedrichshafen-Fischbach, Germany Filed May 17, 1967, Ser. No. 639,111 Int. Cl. F04b 43/08 US. Cl. 103-148 5 Claims ABSTRACT OF THE DISCLOSURE Background of the invention This invention relates to high pressure pumps adapted to deliver liquids including those of an abrasive or corrosive nature. In the past, pumps for such use which utilized a piston as the delivery means were subjected to excessive wear and damage, not only to the piston, but also the piston seals or rings. Such a disadvantage has been overcome by the well known diaphragm pump which contains a diaphragm moved by a pressurized fluid which in turn is acted upon by a reciprocating piston. However, should the diaphragm become damaged, and leak, portions of the pump mechanism are subject to damage, if not destruction, by any corrosive or abrasive material to be moved by the pump.
Equally as well known as the above described diaphragm pumps are hose pumps which contain mechan ical components, such as cams, etc., which convey the liquid in the hoses in successive pulsating surges. Where a hose pump design requires the hoses to enlarge under pressure, expandable materials must be selected for the hoses. However, where pressures are high (i.e. 2840 p.s.i.) the range of applications is limited and require elaborate safeguards to insure good sealing and trouble free service.
Summary of the invention The present invention overcomes the above disadvantages.
It is an object of the present invention to provide a wear-resistant high pressure diaphragm pump to convey liquids having abrasive or corrosive properties.
It is a further object to provide a diaphragm pump in which the diaphragm is a hose whose cross-section can be varied within a casing to convey the liquid.
A still further object is to provide a diaphragm pump as above for particular use in an airless transport environment.
Brif description of the drawing Other objects and advantages will become apparent from the following description and drawing in which:
FIGURE 1 is an elevation view of the hose diaphragm portion and its casing of the pump, partially in section.
FIGURE 2 is a cross-sectional view taken along line 2-2 of FIGURE 1.
FIGURE 3 is a view similar to that of FIGURE 2 but with the hose diaphragm in expanded operating position.
3,440,970 Patented Apr. 29, 1969 Description of the preferred embodiment Viewing the drawing in greater particularity 6 indicates a cylindrical casing which is pressure resistant. The casing 6 contains the motion generating mechanism for the liquid to be pumped. This mechanism includes a diaphragm 1 in the form of a hose 2 longitudinally oriented within the cylindrical casing 6. The hose 2 is connected at one end to an inlet port 7 by means of a union 8. This hose is made of an elastomeric material, preferably a plastic such as polyamide or polypropylene.
Within the hose are longitudinally stacked and oriented hairpin shaped springs 3 contained within opposed slidingly engageable U-shaped metal strips 5a and 5b. As seen in FIGURE 2, the legs of strip 5a are contained within and in sliding contact with the legs of strip 5b. About the legs of the hairpin shaped springs, adjacent the ends of the legs, are short cylindrically shaped cushions 4, preferably made of rubber, to protect the springs 3 and strips 5a and 512 from excessive wear and noise.
The casing 6 has an inlet and outlet at opposite ends. The inlet 10 permits the liquid to be pumped to enter the casing 6 about the hose diaphragm 1 and then the liquid is discharged through the outlet 11. In the embodiment shown the inlet 10 is at the end of the casing remote from the end containing the cylinder port 7. The outlet 11 is closed to the delivery or atomizing portion of the entire system, and since it is also at the same end of the casing as cylinder port 7 this makes for greater elliciency in the entire unit.
In operation, the liquid to be pumped, is drawn into inlet 10. The hose at this time is relaxed in that the hairpin springs 3 have their legs extended and pushing against the protective strips 5a and 5b to slidingly separate them as far as the hose 2 permits. In this position the hose has a cross-sectional configuration which is oval in shape. The pressurizing medium is then forced through the cylinder port 7 into the hose 2 changing the cross-section of the hose 2 to a circle and simultaneously foreshortening the extent of the strips 5a and 5b. The result is that the area A between the hose 2 and the casing 6 is decreased until the area between the hose and casing is at a minimum as shown by A1 in FIGURE 3. This decrease in area causes the liquid to be pumped, to be forced out of outlet 11. The pressurizing medium pressure is then relieved permitting the hose diaphragm to restore to its shape as shown in FIGURE 2.
The pumping cycle is then repeated.
Having shown and described a preferred embodiment of my invention, it is to be understood that I do not wish to be confined to the precise details of construction set forth herein as it is apparent that changes and variations may be made therein by those skilled in the art, without departing from the spirit of the invention or exceeding the scope of the following claims.
1. A high pressure diaphragm pump comprising:
(A) a tubular shaped diaphragm contained within a cylindrical casing having an inlet and outlet, said diaphragm;
(1) being spring loaded by a plurality of springs to obtain an oval cross-sectional configuration when at rest;
(2) being expansible by a fluid pressuring medium toward an enlarged circular cross-section whereby the cross-sectional area and total volume between said diaphragm and casing is decreased to cause a delivery of liquid from said outlet wherein, said springs 3 are shaped as hairpin shaped pins and are stacked and oriented longitudinally within said diaphragm to urge said diaphragm into said oval configuration.
2. A pump as called for in claim 1 wherein said springs are contained within opposed slidingly engageable U-shaped metal strips contained within said diaphragm, said strips each having two parallel legs, the legs of one of said strips being contained within and in sliding contact with the legs of the other strip, said springs urging said strips apart to give said diaphragm said oval c0nfiguration.
3. A pump as called for in claim 2 wherein said dia phragm is a hose made of an elastomer.
4. A pump as called for in claim 3 wherein said hose is made of a polyamide plastic.
5. A pump as called for in claim 3 wherein said hose is made of a polypropylene plastic.
References Cited UNITED STATES PATENTS 28,758 6/1860 Lapham 230-169 1,405,595 2/ 1922 Kapfeker. 2,735,642 2/1956 Norman 103148 XR 2,849,026 8/1958 Taplin 92l03 3,017,433 4/1963 Cerueny 103-148 XR 3,253,549 5/1966 Vincent et al. 103-148 XR 10 3,335,666 8/1967 Czarnecki.
OTHER REFERENCES Polypropylene, Theodore Kresser, Reinhold Pub. Co., N.Y., 1960, pp.184186.
15 ROBERT M. WALKER, Primary Examiner.
W. J. GOODLIN, Assistant Examiner.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US63911167A | 1967-05-17 | 1967-05-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3440970A true US3440970A (en) | 1969-04-29 |
Family
ID=24562760
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US639111A Expired - Lifetime US3440970A (en) | 1967-05-17 | 1967-05-17 | Diaphragm pump |
Country Status (1)
Country | Link |
---|---|
US (1) | US3440970A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3913461A (en) * | 1973-07-27 | 1975-10-21 | Stephen H Latawic | Fluid reaction device having an undulatory flexible wall |
US4484865A (en) * | 1983-05-23 | 1984-11-27 | Spacer John P | Fluid pump for use down a well |
US4822257A (en) * | 1986-01-16 | 1989-04-18 | Olofsson Bjoern | Pump arrangement, particularly for pumping water from deep wells |
DE10142107C1 (en) * | 2001-08-30 | 2003-05-15 | Gruender & Hoetten Gmbh | Fluid pump, for use in mining and chemical industry, has piston mounted on pneumatic muscles which increase in diameter and decrease in length when pressure fluid is fed into them, moving piston |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US28758A (en) * | 1860-06-19 | Eufus lapham | ||
US1405595A (en) * | 1918-03-20 | 1922-02-07 | Astra Soc | Liquid-elevating apparatus |
US2735642A (en) * | 1956-02-21 | norman | ||
US2849026A (en) * | 1955-12-12 | 1958-08-26 | John F Taplin | Flexible fluid sealing diaphragm |
US3017433A (en) * | 1954-05-03 | 1962-01-16 | Union Oil Company Of Califroni | Production of dibasic acids from c-8 aromatic hydrocarbons |
US3253549A (en) * | 1964-07-09 | 1966-05-31 | Pan American Petroleum Corp | Fluid actuated pump |
US3335666A (en) * | 1966-01-05 | 1967-08-15 | Laval Turbine | Pulsator pumps |
-
1967
- 1967-05-17 US US639111A patent/US3440970A/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US28758A (en) * | 1860-06-19 | Eufus lapham | ||
US2735642A (en) * | 1956-02-21 | norman | ||
US1405595A (en) * | 1918-03-20 | 1922-02-07 | Astra Soc | Liquid-elevating apparatus |
US3017433A (en) * | 1954-05-03 | 1962-01-16 | Union Oil Company Of Califroni | Production of dibasic acids from c-8 aromatic hydrocarbons |
US2849026A (en) * | 1955-12-12 | 1958-08-26 | John F Taplin | Flexible fluid sealing diaphragm |
US3253549A (en) * | 1964-07-09 | 1966-05-31 | Pan American Petroleum Corp | Fluid actuated pump |
US3335666A (en) * | 1966-01-05 | 1967-08-15 | Laval Turbine | Pulsator pumps |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3913461A (en) * | 1973-07-27 | 1975-10-21 | Stephen H Latawic | Fluid reaction device having an undulatory flexible wall |
US4484865A (en) * | 1983-05-23 | 1984-11-27 | Spacer John P | Fluid pump for use down a well |
US4822257A (en) * | 1986-01-16 | 1989-04-18 | Olofsson Bjoern | Pump arrangement, particularly for pumping water from deep wells |
DE10142107C1 (en) * | 2001-08-30 | 2003-05-15 | Gruender & Hoetten Gmbh | Fluid pump, for use in mining and chemical industry, has piston mounted on pneumatic muscles which increase in diameter and decrease in length when pressure fluid is fed into them, moving piston |
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