EP0156965A2 - Pompe à diaphragme - Google Patents
Pompe à diaphragme Download PDFInfo
- Publication number
- EP0156965A2 EP0156965A2 EP84113850A EP84113850A EP0156965A2 EP 0156965 A2 EP0156965 A2 EP 0156965A2 EP 84113850 A EP84113850 A EP 84113850A EP 84113850 A EP84113850 A EP 84113850A EP 0156965 A2 EP0156965 A2 EP 0156965A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- connecting rod
- diaphragm pump
- adjusting
- support ring
- pump according
- 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.)
- Granted
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
- 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
Definitions
- the invention relates to a diaphragm pump for liquids, the connecting rod or the like moving the diaphragm of which has a support ring or the like. Support surface for the central region of the diaphragm.
- the invention is therefore based on the object of providing a diaphragm pump for conveying liquids in which an equalization of the scattering of the liquid throughput and / or an adjustment of the delivery capacity taking into account predetermined operating conditions is possible in a simple manner, both simply with regard to the setting and even without great additional manufacturing effort.
- a support ring or similar support surface is provided for the central region of the diaphragm in a diaphragm pump for liquids, on the connecting rod or the like of the plunger moving the diaphragm, this support ring being different from the outside of the diaphragm Positions is adjustable.
- the connecting rod moving the diaphragm or the like has a support ring for the central region of the diaphragm.
- this support ring or its support surface facing the outside of the membrane should not touch it in the normal operating state, but should only support it if necessary in order to "change", ie. H. prevent the diaphragm from bulging in the direction of the connecting rod.
- the position of the support ring with respect to the outside of the diaphragm cannot be adjusted.
- An advantageous development of the invention consists in that the support ring or the like can be locked in different positions.
- the z. B. during the test run setting of the support ring or the resulting output is determined. It may be useful if, in the case of a diaphragm pump of the type mentioned at the outset, which has a damping space for damping pressure surges of the conveying medium in the suction area and in which the receiving volume of the damping space can be regulated in the sense of a change in the medium flow to the diaphragm, also a support ring or.
- a support ring or Like. Is provided which is adjustable in different positions relative to the outside of the membrane. This allows you to z. B. adjust their maximum delivery rate once. In operation, the desired delivery can then be obtained with such a diaphragm pump Adjust the output in the sense of a targeted reduction of the maximum delivery rate if necessary.
- a diaphragm pump for liquids designated as a whole, has a housing 2 in which a diaphragm 3 is clamped. This closes the delivery chamber 4 from the connecting rod housing 5.
- the membrane 3 is clamped between this and an upper housing part 6 in a known manner.
- 7 is a valve plate, above which a head plate 8 is located.
- 9 is the inlet valve and 10 is the outlet valve.
- an inlet bore 11 leads into the area of a recess 12 for the valve tongue 13 of the inlet valve 9. Above this valve tongue, the inlet channel 14 can be seen.
- an outlet bore 15 and a recess 16 for the valve tongue there are in the outlet valve 10 17 and an outlet channel 18 are provided.
- the connecting rod designated as a whole by 19, is likewise mounted in a known manner on an eccentric pin 20 of a pump drive (not shown in more detail).
- the connecting rod 19 consists essentially of the connecting rod eye 21 and the connecting rod shaft 22 connected to it in one piece (FIG. 3 below), on which the diaphragm 3 is also known in a known manner via a diaphragm connecting pin 23 and a fastening bolt 24 attached to it Internal thread 25 of the connecting rod shaft is connected.
- a support ring or similar support surface 27 for the central region 28 of the membrane 3 is now provided on the connecting rod 19 or the like tappet for moving the membrane 3, this support ring or the like being in different positions relative to the outside of the membrane 29 ( see in particular FIGS. 6 and 7).
- an adjusting device provided with 30 for the whole Support ring 26 provided on the connecting rod 19 . It essentially consists of a connecting rod connecting part 31 that can be placed on the connecting rod shaft 22 and an adjusting bush 32 equipped with the support ring 26.
- the connecting rod connecting part 31 is essentially cup-shaped and has a cavity 33 for plugging onto the connecting rod shaft 22 (FIG. 3). .
- the connecting rod connecting part 31 In the "bottom" 34 of this cup-shaped connecting part 31 there is a bore 35 through which the fastening bolt 24 of the membrane can pass and can be connected to the internal thread 25 of the connecting rod shaft 22.
- the connecting rod connecting part 31 In the assembled state (FIG. 1), the connecting rod connecting part 31 is fixed by means of its base 34 between the end face 36 of the connecting rod shaft 22 and the end face 37 of the membrane connecting pin 23.
- At the connecting rod connecting part 31 there are two anti-rotation flanges 38 and 39 (FIG. 5) which overlap the flat sides 40 of the connecting rod 19 and thereby secure the connecting rod connecting part against rotation (FIGS. 1 and 3).
- the connecting rod connecting part 31 has an external thread 41 which interacts with the adjusting bush 32.
- the essentially tubular adjusting bush 32 has an internal thread 42 in the bush.
- the adjusting sleeve 32 has a radial, flange-like widening, which forms the support ring 26 or, with its front-side support surface 27, the membrane outer side 29 can be supported to an adjustable extent.
- the connecting rod connecting part 31 belonging to the adjusting device and the associated adjusting bush 32 have a locking device, designated overall by 43, by means of which an undesired or unintentional turning of these two parts 31 and 32 against one another is prevented.
- This locking device 43 includes a toothed locking ring 44 attached to the connecting rod connecting part 31 and at least one on the adjusting sleeve at a corresponding point attached locking tooth 45 which engages in the assembled state of the adjusting device 30 in the locking ring 44.
- the locking tooth 45 is arranged in a radially somewhat elastically flexible tubular section 46 of the adjusting sleeve 32. Within this, an abutment segment 47 opposite the locking tooth 45 is provided. This, the diagonally opposite locking tooth 45 and the tubular section 46 are integrally connected to the adjusting bush 32.
- the connecting rod connecting part 31 also expediently consists of plastic. Both parts are then easy to manufacture and in particular the tubular section 46 of the adjusting sleeve 32 has the spring-elastic properties desired for the adjustment or locking.
- the support ring 26 with comprehensive adjusting device 30 can be attached to a connecting rod 19 of a conventional type without substantial changes.
- a connecting rod 19 of a conventional type which has no adjusting device 30
- the adjusting bush 32 By turning the adjusting bush 32, the axial distance L between the end face 36 of the connecting rod shaft and the support surface 27 of the support ring 26 changes, that is, the axial length L of the adjusting device 30.
- the connecting rod 19 When the connecting rod 19 is assembled, including the associated adjusting device 30, the diaphragm connecting pin penetrates 23 the adjoining end passage 48 of the adjusting sleeve 32.
- the tubular section 46 is shown schematically and distorted by means of a dash-dotted line in that deformed 46 ', in which the locking tooth 45 is outside the locking ring 44.
- the diaphragm pump 1 works as follows (cf. in particular FIGS. 6 and 7): During the suction stroke, the suction forces to be exerted on the conveying medium counteract this downward movement of the diaphragm 3 in accordance with the arrows Pf 2 in FIGS. 6 and 7. The diaphragm 3 then takes - approximately shown at bottom dead center - the shape shown in Figs. 6 and 7 in solid lines and in section. If there is a pressure stroke with the same connecting rod position, the extension forces exerted on the pumped medium act on the diaphragm in accordance with arrows Pf 3. This then assumes the position shown in dash-dotted lines in FIGS. 6 and 7 and denoted by 3 ′ and 3 ′′.
- the delivery volume V 1 according to FIG. 6 is reduced by a delivery volume V 2 which results from the different position of the membrane 3 in Suction position or 3 "in the pressure position results.
- the volume V 2 or V 3 created by the change in the membrane system is a kind of dead space through which the liquid throughput the diaphragm pump 1 is reduced in the unit of time. 7, the support ring 26 or its support surface 27 is disengaged.
- the membrane 3 ' can bend in its elastic region 49 relatively far in the direction of the connecting rod 19 and the resulting change in volume V 3 is relatively large.
- the diaphragm 3 is supported by the support ring 26 or its supporting surface 27 during the pressure stroke on its underside 29.
- the volume change V there is accordingly 2 of the delivery chamber 4 is noticeably smaller than shown in FIG. 7.
- the liquid throughput in the unit of time can thus be changed and adjusted by changing the position of the support ring 26 or the like. This can e.g. B. easily done during a control and test run with the connecting rod housing 5 still open and the adjusting bush 32 snaps permanently into the adjusted position. Should z. B.
- a diaphragm pump no control but provide a predetermined liquid throughput of one liter per minute, you can adjust this in the manner described above in a very simple manner with a corresponding pump.
- the adjustment device 30 required for this is also very simple to manufacture and makes little effort during adjustment.
- a certain delivery capacity should be provided by a diaphragm pump 1 under somewhat different conditions, for example at a suction height of 2 m and a back pressure of 1 bar.
- a diaphragm pump you can then, in addition to the manufacturing tolerances mentioned above, etc., which result from the different conditions such.
- suction height and back pressure resulting influences on the Compensate adjustment device 30 and adjust the diaphragm pump accordingly.
- FIG. 2 shows a somewhat modified diaphragm pump 1 a.
- its head plate 8 a is provided with a damping chamber 51, which is connected to the inlet channel 14 via a branch 14 a.
- the damping space is closed off at the top by a damping membrane 52. This is clamped at its edges between the head plate 8 a and a connecting part 53.
- a stamp 55 is located in an approximately cylindrical inner space 54. The height can be adjusted in accordance with the double arrow Pf 4.
- it is connected to a threaded bolt 56 which is supported in a threaded bore 57.
- a desired maximum delivery rate for. B. a liter per minute, under certain suction and back pressure conditions, be adjusted, and that at maximum position of the control device 50.
- Support surface 27 not only results in an adjustment of the delivery rate and the possibility of compensating for manufacturing and material tolerances.
- the efficiency of the diaphragm pump 1 or 1 a can also be improved or, if necessary, deliberately deteriorated, the latter in particular by actuating the control device 50.
- the abutment segment 47 prevents the locking tooth 45 from unintentionally moving out of the area of the locking ring 44.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19833347538 DE3347538A1 (de) | 1983-12-30 | 1983-12-30 | Membranpumpe |
| DE3347538 | 1983-12-30 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0156965A2 true EP0156965A2 (fr) | 1985-10-09 |
| EP0156965A3 EP0156965A3 (en) | 1986-04-30 |
| EP0156965B1 EP0156965B1 (fr) | 1987-11-19 |
Family
ID=6218429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP84113850A Expired EP0156965B1 (fr) | 1983-12-30 | 1984-11-16 | Pompe à diaphragme |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0156965B1 (fr) |
| JP (1) | JPS60127489U (fr) |
| DE (2) | DE3347538A1 (fr) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5315968A (en) * | 1993-03-29 | 1994-05-31 | Orbital Walbro Corporation | Two-stage fuel delivery system for an internal combustion engine |
| GB2378734A (en) | 2001-08-14 | 2003-02-19 | Carmeli Adahan | Disposable pump with detachable motor |
| CN103047052B (zh) * | 2013-01-04 | 2014-12-24 | 浙江瑞星化油器制造有限公司 | 用于一步起动式化油器的膜片式泵油器 |
| DE102022119801A1 (de) | 2022-08-05 | 2024-02-08 | Prominent Gmbh | Membransystem mit Selbsthemmung |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3149572A (en) * | 1961-11-13 | 1964-09-22 | William E Davis | Adjustable diaphragm pump |
| GB1180453A (en) * | 1966-11-18 | 1970-02-04 | American Mach & Foundry | Improvements in or relating to Reciprocating Metering Pumps |
| DE2618786A1 (de) * | 1976-04-29 | 1977-11-10 | Bau & Industrietechnik Gmbh | Verdraengungspumpe mit membran |
| DE3210110A1 (de) * | 1981-11-28 | 1983-06-01 | Erich 7812 Bad Krozingen Becker | Membranpumpe |
| DE3311413A1 (de) * | 1982-05-26 | 1983-12-01 | Kamyr S.r.l., 28053 Castelletto Ticino | Membran-dosierpumpe mit rueckschlagventilen |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1503428A1 (de) * | 1966-01-12 | 1969-04-03 | Hansa Metallwerke Ag | Membranverdichter |
-
1983
- 1983-12-30 DE DE19833347538 patent/DE3347538A1/de not_active Ceased
-
1984
- 1984-11-16 EP EP84113850A patent/EP0156965B1/fr not_active Expired
- 1984-11-16 DE DE8484113850T patent/DE3467603D1/de not_active Expired
- 1984-12-28 JP JP1984196946U patent/JPS60127489U/ja active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3149572A (en) * | 1961-11-13 | 1964-09-22 | William E Davis | Adjustable diaphragm pump |
| GB1180453A (en) * | 1966-11-18 | 1970-02-04 | American Mach & Foundry | Improvements in or relating to Reciprocating Metering Pumps |
| DE2618786A1 (de) * | 1976-04-29 | 1977-11-10 | Bau & Industrietechnik Gmbh | Verdraengungspumpe mit membran |
| DE3210110A1 (de) * | 1981-11-28 | 1983-06-01 | Erich 7812 Bad Krozingen Becker | Membranpumpe |
| DE3311413A1 (de) * | 1982-05-26 | 1983-12-01 | Kamyr S.r.l., 28053 Castelletto Ticino | Membran-dosierpumpe mit rueckschlagventilen |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3347538A1 (de) | 1985-07-11 |
| EP0156965B1 (fr) | 1987-11-19 |
| DE3467603D1 (en) | 1987-12-23 |
| EP0156965A3 (en) | 1986-04-30 |
| JPH0124388Y2 (fr) | 1989-07-24 |
| JPS60127489U (ja) | 1985-08-27 |
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