EP0415259B1 - Dosierpumpe - Google Patents
Dosierpumpe Download PDFInfo
- Publication number
- EP0415259B1 EP0415259B1 EP90116104A EP90116104A EP0415259B1 EP 0415259 B1 EP0415259 B1 EP 0415259B1 EP 90116104 A EP90116104 A EP 90116104A EP 90116104 A EP90116104 A EP 90116104A EP 0415259 B1 EP0415259 B1 EP 0415259B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metering
- stroke
- space
- plunger
- sealing head
- 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
- F04B53/06—Venting
-
- 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
- F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
-
- 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
- F04B23/00—Pumping installations or systems
- F04B23/04—Combinations of two or more pumps
- F04B23/06—Combinations of two or more pumps the pumps being all of reciprocating positive-displacement type
Definitions
- the invention relates to a metering pump with a pump cylinder connected on the inlet side with a pre-delivery chamber and on the outlet side with a metering point and a metering piston interacting therewith and a membrane, the pre-delivery chamber can be above or to the side of the pump cylinder, and with a metering agent container via a suction line and a suction valve a return line having a pressure valve can be connected.
- the pre-delivery chamber is connected to a metering agent container via a suction line having a suction valve and a return line having a pressure valve.
- the pre-delivery takes place via the suction line and the suction valve to the pre-delivery room.
- the dosing piston takes the required amount of dosing agent from the pre-delivery chamber. The excess amount of the dosing agent is conveyed back into the dosing agent container via the pressure valve and the return line.
- the metering piston must emerge from the compression ring in the cylinder chamber so that the compression chamber is vented. When the dosing piston is immersed in the compression ring, it is mechanically worn out very quickly. This causes high replacement costs for a low-value part, such as a compression ring.
- the object of the invention is therefore to provide a metering pump for metering liquid media, in particular also aggressive and / or outgassing media, in which the metering piston no longer emerges from the compression ring and the pump acts self-priming and self-venting even against pressure.
- FIGS. 1 to 3 A first exemplary embodiment of the invention is explained with reference to FIGS. 1 to 3, while FIG. 4 represents another exemplary embodiment.
- FIG. 1 and 2 show the metering pump according to the invention during the metering and suction stroke
- FIG. 3 shows, on an enlarged scale, a specific position of the pump during the suction stroke.
- a metering pump 1 is provided with a housing 2, which has a compression space 3 and an overlying cylinder space 4.
- the compression chamber 3 is connected on the input side to a metering container 7 via a suction valve 5 and a suction line 6.
- the metering piston 8 is designed as a hollow piston and is guided by means of a piston guide 9, in which a compression ring 10 is located.
- the top of the hollow piston is designed as a sealing plate 11, wherein the sealing plate 11 can have a sealing bead 12 on its top.
- the cylinder space 4 is delimited at the top by a stop ring 13, through which the lifting plunger 21 can move freely, i.e. A gap 17 remains between the lifting plunger 21 and the inside diameter of the stop ring 13, through which the dosing agent can pass from the cylinder space 4 into the membrane space 16.
- the diaphragm space 16 is delimited at the top by the pre-delivery diaphragm 18 and is in contact with the cylinder space 4 as long as the sealing plate 11 does not abut the stop ring 13.
- the excess pre-conveyed medium is returned via a return valve 19 and a return line 33 into the dosing agent container 7 during the return stroke.
- the dosing medium When the dosing medium is sucked out of the dosing agent container 7, it is fed into the cylinder chamber 4 via the suction line 6 and the bypass line 15 and the check valve 20 and from there through the suction effect of the pre-delivery membrane 18 through the gap 17 between the inside diameter of the stop ring 13 and the outside diameter of the lifting tappet 21 promoted in the membrane space 16.
- the return valve 19 is closed during suction.
- the hollow piston 8 with the sealing plate 11 is pressed by a spring 24 against a seal 22 on the lifting plunger 21 until the sealing plate 11 bears against the stop ring 13 when the plunger 21 moves further.
- the lifting plunger 21 After completion of the suction stroke during the dosing stroke (see FIG. 1) the lifting plunger 21 is moved in the other direction via the eccentric 24 and the yoke 25 until the lifting plunger 21 lies sealingly on the sealing bead 12 of the sealing plate 11 and thus the through bore 23 of the Hollow piston 8 closes. During the further metering stroke, the peripheral edge 26 of the lifting plunger 21 takes over the power transmission to the hollow piston 8 and the spring 24. This ensures a constant pressure rigidity during the metering stroke. After reaching the sealing plate 11, the lifting plunger 21 presses the hollow piston 8 against the spring up to the lower maximum value set on the stroke adjustment 27.
- the suction valve 5 is pressed against the sealing seat 28 and closes the suction line 6.
- the dosing agent in the compression chamber 3 is thereby pressed into the dosing line 32 via the hose valve 31 via the transverse bore 30 in the cylinder 29.
- the dosing medium sucked in too much via the pre-delivery membrane 18 and any gas bubbles which may be present are simultaneously released via the return valve 19 and the dosing stroke Return line 33 is fed back into the metering container 7.
- the gas bubbles returned to the metering container 7 rise to the atmosphere after exiting the return line within the metering container and are not sucked in again.
- the medium is sucked directly into the hollow piston 8 via the suction line 6, the suction valve 5 and the through bore 23.
- the lifting plunger 21 lifts off the sealing lip 12 of the plate 11.
- the dosing medium is then conveyed through the hollow piston 8 via the gap 17 into the membrane space 16 via the pre-delivery membrane 18.
- the compression chamber is completely filled with dosing agent and vented.
- a bypass line 15 and a check valve 20 are not required.
- the embodiment is particularly suitable for small metering strokes.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Medicines Containing Plant Substances (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT90116104T ATE97195T1 (de) | 1989-08-28 | 1990-08-22 | Dosierpumpe. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3928411A DE3928411A1 (de) | 1989-08-28 | 1989-08-28 | Dosierpumpe |
DE3928411 | 1990-08-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0415259A1 EP0415259A1 (de) | 1991-03-06 |
EP0415259B1 true EP0415259B1 (de) | 1993-11-10 |
Family
ID=6388043
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90116104A Expired - Lifetime EP0415259B1 (de) | 1989-08-28 | 1990-08-22 | Dosierpumpe |
Country Status (5)
Country | Link |
---|---|
US (1) | US5017105A (ja) |
EP (1) | EP0415259B1 (ja) |
JP (1) | JPH03117687A (ja) |
AT (1) | ATE97195T1 (ja) |
DE (2) | DE3928411A1 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4219663C2 (de) * | 1992-06-16 | 1996-01-18 | Prominent Dosiertechnik Gmbh | Flüssigkeits-Dosierpumpe |
US5290159A (en) * | 1993-03-04 | 1994-03-01 | Exxon Production Research Company | Downhole pump of constant differential hydraulic pressure |
US6164924A (en) * | 1998-09-01 | 2000-12-26 | Oil-Rite Corporation | Piston and drive assembly for use in a pump |
CN110194364B (zh) * | 2019-05-08 | 2021-03-02 | 胡乔生 | 一种两级计量的分配系统及其控制方法 |
DE102022115955A1 (de) | 2022-06-27 | 2023-12-28 | Prominent Gmbh | Dosierpumpe mit Hubeinstellung |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4898632A (ja) * | 1972-03-27 | 1973-12-14 | ||
DE7733135U1 (de) * | 1977-10-27 | 1978-03-23 | Sukatsch, Alexander, 6702 Bad Duerkheim | Dosierpumpe |
DE2831437C2 (de) * | 1978-07-18 | 1983-12-15 | Webasto-Werk W. Baier GmbH & Co, 8035 Gauting | Förder- und Dosierpumpe |
DE2831625A1 (de) * | 1978-07-19 | 1980-02-07 | Lang Apparatebau Gmbh | Vorrichtung zum dosieren einer chemikalienloesung in stroemende frischfluessigkeit |
US4278406A (en) * | 1979-11-07 | 1981-07-14 | R. W. Beckett Corporation | Electromagnetic pump |
DE3134940C2 (de) * | 1981-09-03 | 1983-12-15 | Grünbeck Wasseraufbereitung GmbH, 8884 Höchstädt | Dosierpumpe |
DE3210821C2 (de) * | 1982-03-24 | 1986-01-09 | Grünbeck Wasseraufbereitung GmbH, 8884 Höchstädt | Dosierpumpe |
DE3300461A1 (de) * | 1983-01-08 | 1984-08-30 | Lang Apparatebau GmbH, 8227 Siegsdorf | Kolben-membrandosierpumpe |
-
1989
- 1989-08-28 DE DE3928411A patent/DE3928411A1/de active Granted
-
1990
- 1990-08-20 US US07/570,147 patent/US5017105A/en not_active Expired - Fee Related
- 1990-08-22 DE DE90116104T patent/DE59003436D1/de not_active Expired - Fee Related
- 1990-08-22 EP EP90116104A patent/EP0415259B1/de not_active Expired - Lifetime
- 1990-08-22 AT AT90116104T patent/ATE97195T1/de not_active IP Right Cessation
- 1990-08-27 JP JP2222671A patent/JPH03117687A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
DE3928411C2 (ja) | 1993-05-13 |
DE3928411A1 (de) | 1991-03-07 |
ATE97195T1 (de) | 1993-11-15 |
JPH03117687A (ja) | 1991-05-20 |
EP0415259A1 (de) | 1991-03-06 |
DE59003436D1 (de) | 1993-12-16 |
US5017105A (en) | 1991-05-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE4141670C2 (de) | Hydraulisch angetriebene Membranpumpe mit Membranhubbegrenzung | |
EP1592887B1 (de) | Hochdruckpumpe | |
EP0188730A2 (de) | Membranpumpe mit hydraulisch angetriebener Rollmembran | |
DE2355191C3 (de) | Kolbenpumpe | |
WO2006013142A1 (de) | Kolbenpumpe mit kompakter haltevorrichtung für eine rückstellfeder | |
DE102014010108B4 (de) | Hydraulisch angetriebene Membranpumpe | |
WO2018091306A1 (de) | Betriebsverfahren einer kolbenpumpe sowie kolbenpumpe | |
DE10306006A1 (de) | Hydraulikmodul | |
EP0688954A1 (de) | Gesteuerte Schnüffelbehinderung für Hochdruck-Membranpumpen | |
EP0415259B1 (de) | Dosierpumpe | |
DE1673517B2 (ja) | ||
EP1764504A1 (de) | Elektromagnetisch betreibbare Dosierpumpe | |
DE2852749A1 (de) | Foerderpumpe | |
EP0505539B1 (de) | Bremsdruckregelvorrichtung für eine hydraulische kraftfahrzeugbremsanlage | |
DE10056568C1 (de) | Vorrichtung zur Einhaltung der korrekten Ölüberströmmenge an Membrankompressoren | |
WO2019115097A1 (de) | Kraftstofffördereinrichtung für kryogene kraftstoffe | |
DE102009028609A1 (de) | Manuell betätigbare Pumpenvorrichtung | |
EP0007109A1 (de) | Vorrichtung zum Dosieren einer Chemikalienlösung in strömende Frischflüssigkeit | |
WO1989011035A1 (en) | Plunger pump arrangement | |
DE3828274A1 (de) | Hydraulikpumpe | |
DE2157020A1 (de) | Mehrzylindrige ventilgesteuerte hochdruck-kolbenpumpe | |
DE102009045230A1 (de) | Druckbegrenzungseinrichtung | |
DE2349080A1 (de) | Hochdruckpumpe | |
DE2450209A1 (de) | Hydraulische pump- und stellvorrichtung | |
DE693829C (de) | von nicht schmierfaehiger Foerderfluessigkeit, z. B. Benzin, durch die Kolbendichtung einer Brennstoffoerderpumpe in das mit Schmieroel aufgefuellte Kurbelgehaeuse |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB IT LI NL |
|
17P | Request for examination filed |
Effective date: 19910306 |
|
17Q | First examination report despatched |
Effective date: 19920520 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE FR GB IT LI NL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT Effective date: 19931110 Ref country code: BE Effective date: 19931110 Ref country code: FR Effective date: 19931110 Ref country code: GB Effective date: 19931110 Ref country code: NL Effective date: 19931110 |
|
REF | Corresponds to: |
Ref document number: 97195 Country of ref document: AT Date of ref document: 19931115 Kind code of ref document: T |
|
REF | Corresponds to: |
Ref document number: 59003436 Country of ref document: DE Date of ref document: 19931216 |
|
EN | Fr: translation not filed | ||
NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
GBV | Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed] |
Effective date: 19931110 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Effective date: 19940822 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Effective date: 19940831 Ref country code: CH Effective date: 19940831 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19950811 Year of fee payment: 6 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19970501 |