EP0104215A1 - Dosierpumpe. - Google Patents
Dosierpumpe.Info
- Publication number
- EP0104215A1 EP0104215A1 EP83901075A EP83901075A EP0104215A1 EP 0104215 A1 EP0104215 A1 EP 0104215A1 EP 83901075 A EP83901075 A EP 83901075A EP 83901075 A EP83901075 A EP 83901075A EP 0104215 A1 EP0104215 A1 EP 0104215A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- dosing
- metering
- cylinder
- pump cylinder
- 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
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
- 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
-
- 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
Definitions
- the invention relates to a metering pump with a pump cylinder connected on the inlet side to a pre-delivery chamber and on the outlet side with a metering point and a metering piston cooperating therewith, and a membrane, the pre-delivery chamber being located above the pump cylinder and with a metering agent container via a suction line having a suction valve and an inlet Return line having a pressure valve can be connected.
- the pre-feed 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 metering piston takes the required amount of metering agent from the pre-conveying space.
- the excess amount of the dosing agent is conveyed back into the dosing agent container via the pressure valve and the return line.
- the pump cylinder in a known metering pump can be connected to a metering point via a pressure valve.
- the object of the invention is to provide a metering pump of the type described in the introduction, in which the disadvantages discussed above are avoided. In particular, the expansion in the pump cylinder when the piston is being replaced should be avoided.
- this object is achieved in that the pump cylinder is connected to the suction line.
- the pump cylinder is preferably connected to the suction line via a line leading through a pump sump.
- the figure shows a schematic representation of a metering pump connected to a water supply with a metering agent container, partly in a sectional view.
- the metering pump 1 comprises a pump cylinder 2 with an inlet located at the top in the vertical direction and an outlet 3 located near its lower end. Above the pump cylinder 2 there is a metering piston 4, which by means of a schematically illustrated lifting drive 5 relative to the pump cylinder. and moved and thus immersed in or immersed therein.
- the stroke drive 5 is connected by means of a control line 6 to a pulse generator 7, which delivers control pulses to the stroke drive as a function of the amount of liquid flowing through a line 8.
- the pump cylinder 2 is connected at its top with a pre- "• conveying chamber 9, which is formed from a housing tenth
- the walls of the housing 10 may be in the form of a diaphragm 11 laterally chucking membrane clamps 12, 13 formed
- the lower part of the housing 10 is tightly connected to the pump cylinder wall.
- An outlet 40 is provided at a distance from the pump cylinder wall, to which a tubular suction line 41 connects, which can be connected to a dosing agent container 16.
- the suction line has a suction valve 42, which prevents backflow from the pre-delivery chamber 9 into the dosing agent container 16.
- the outlet 40 is, seen from the liquid level forming in the pre-delivery chamber, in the vertical direction at a level above the inlet side of the pump cylinder 2.15
- a return line 43 is provided, which can also be connected to the dosing agent container 16 and which contains a pressure valve 44.
- the remindlauf1ei ung 43 is connected at an outlet 45 to the pre-delivery chamber 9, the outlet 20 45 viewed in the vertical direction and to the new liquid level being formed in the pre-delivery chamber above the inlet side of the pump cylinder 2 and preferably above the outlet 40 .
- the dosing agent container 16 preferably has a flexible bladder 17 containing the dosing agent, which is carried by a support container 18.
- the support container has ventilation openings 19.
- the lines 41 and 43 are tightly connected to the “interior of the flexible bladder 17. In this way
- Dosing medium is required.
- a conventional dosing agent container can also be used, in which air flows in according to the amount of dosing agent extracted. So that this air is germ-free flows into the container, a bacterial filter can be provided in the ventilation opening.
- a pressure valve 20 is directly connected to the outlet 3, which in the exemplary embodiment shown is designed as a spring-loaded ball valve.
- a connecting line 23 leading to a metering point 22 connects to the pressure valve.
- the pressure valve 20 is provided as close as possible to the pump cylinder and preferably directly at the outlet thereof.
- an approximately horizontally formed line piece 48 branches off in front of the suction valve 42 and ends in the upper region of a pump sump 27.
- the pump cylinder 2 has an opening 29 on its bottom 28, which lies at the bottom in the vertical direction, and which leads into the interior of the pump sump 27 via a suction valve 30 and a suction line 31 directly adjoining it.
- the suction line extends almost to the bottom of the pump sump.
- the membrane 11 is connected to the metering piston, for example by a fastening disk 32, in such a way that the membrane is moved as the metering piston is raised or lowered.
- the diaphragm 11 moves from bottom dead center upwards, the air is sucked off in the suction system in the first stroke and the metering agent is conveyed from the flexible bladder 17 into the pre-delivery chamber 9.
- the metering piston 4 is exchanged with the lifting of the membrane 11 out of the pump cylinder 2, so that part of the metered agent conveyed completely envelops the pump cylinder 2 and an excess 32 of metering agent remains in the pre-conveying space 9.
- the sump 27 is constantly filled with dosing agent.
- dosing agent is sucked out of the pump sump 27 via the suction line 31 and the suction valve 30 into the pump cylinder 2, so that evacuation in this space leading to crystallization or polymerization is avoided.
- the size of the pump sump 27 is chosen so that there is always enough liquid during suction and prevents that pulsating air can penetrate into the suction valve 30 of the metering pump 1 during operation, for example in the line 41.
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT83901075T ATE22969T1 (de) | 1982-03-24 | 1983-03-22 | Dosierpumpe. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3210821A DE3210821C2 (de) | 1982-03-24 | 1982-03-24 | Dosierpumpe |
DE3210821 | 1982-03-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0104215A1 true EP0104215A1 (de) | 1984-04-04 |
EP0104215B1 EP0104215B1 (de) | 1986-10-15 |
Family
ID=6159176
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83901075A Expired EP0104215B1 (de) | 1982-03-24 | 1983-03-22 | Dosierpumpe |
Country Status (9)
Country | Link |
---|---|
US (1) | US4523903A (de) |
EP (1) | EP0104215B1 (de) |
JP (1) | JPS59500423A (de) |
AU (1) | AU1475883A (de) |
CH (1) | CH662616A5 (de) |
DE (2) | DE3210821C2 (de) |
DK (1) | DK534583A (de) |
IT (1) | IT1160534B (de) |
WO (1) | WO1983003447A1 (de) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2811565C2 (de) * | 1978-03-16 | 1986-11-06 | Grünbeck Wasseraufbereitung GmbH, 8884 Höchstädt | Behälter zur Aufnahme einer mit Hilfe einer Pumpe abzusaugenden Flüssigkeit |
DE3535329A1 (de) * | 1985-10-03 | 1987-04-09 | Draegerwerk Ag | Kolbendosierpumpe fuer ein fliessfaehiges medium |
DE3738656C1 (de) * | 1987-11-13 | 1989-03-23 | Gruenbeck Josef Wasseraufb | Dosierpumpe |
DE3928411A1 (de) * | 1989-08-28 | 1991-03-07 | Gruenbeck Josef Wasseraufb | Dosierpumpe |
EP0484575A1 (de) * | 1990-11-07 | 1992-05-13 | Abel-Pumpen Gmbh & Co. Kg | Vorrichtung zum Fördern von Schlamm und zum dosierten Zumischen eines Filterhilfsmittels |
EP0997643B1 (de) * | 1998-09-25 | 2006-07-12 | ALLDOS Eichler GmbH | Membrandosierpumpe |
AUPQ616200A0 (en) | 2000-03-10 | 2000-03-30 | Speight, Christopher | Chemical metering pump |
AU2001240352B2 (en) * | 2000-03-10 | 2006-04-13 | Christopher Speight | Chemical metering pump |
US7195122B2 (en) | 2000-05-12 | 2007-03-27 | Pall Corporation | Filters |
US6358023B1 (en) | 2000-08-23 | 2002-03-19 | Paul Guilmette | Moment pump |
US6435849B1 (en) | 2000-09-15 | 2002-08-20 | Paul L. Guilmette | Fluid pump |
JP3718118B2 (ja) * | 2000-10-05 | 2005-11-16 | 株式会社コガネイ | 液体吐出装置および液体吐出方法 |
JP3890229B2 (ja) * | 2001-12-27 | 2007-03-07 | 株式会社コガネイ | 薬液供給装置および薬液供給装置の脱気方法 |
JP3947398B2 (ja) * | 2001-12-28 | 2007-07-18 | 株式会社コガネイ | 薬液供給装置および薬液供給方法 |
US20040131482A1 (en) * | 2003-01-07 | 2004-07-08 | King Peter Joseph | Rowing bilge pump |
US7810674B2 (en) * | 2005-07-26 | 2010-10-12 | Millipore Corporation | Liquid dispensing system with enhanced mixing |
US9527714B2 (en) * | 2011-08-29 | 2016-12-27 | Cardomon International Limited | Apparatus for dispensing a liquid from a liquid storage container |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE304021C (de) * | ||||
US862867A (en) * | 1906-03-28 | 1907-08-06 | Lewis Watson Eggleston | Pneumatic pumping apparatus. |
US1538911A (en) * | 1923-04-20 | 1925-05-26 | Borden Co | Apparatus for propelling liquids |
DE2034816A1 (de) * | 1970-07-14 | 1972-01-20 | Audi NSU Auto Union AG, 7107 Neckars ulm | Forder und Dosierpumpe |
US3680985A (en) * | 1970-12-28 | 1972-08-01 | Mec O Matic The | Pump |
BE800023A (nl) * | 1973-05-25 | 1973-09-17 | Unitas Sa | Pomp voor het verpompen van kleine hoeveelheden gedoseerde vloeistoffen, |
JPS527562B2 (de) * | 1973-06-04 | 1977-03-03 | ||
DE2349080A1 (de) * | 1973-09-29 | 1975-04-30 | Wagner Gmbh J | Hochdruckpumpe |
US4029442A (en) * | 1975-08-19 | 1977-06-14 | Edward Bleiweiss | High pressure piston pump and wiper, sealing, valving structure |
US4035109A (en) * | 1975-08-25 | 1977-07-12 | Drath Edwin H | Pump for fluent, and especially heavy and abrasive materials |
DE2651614C2 (de) * | 1976-11-12 | 1984-10-04 | Lang Apparatebau GmbH, 8227 Siegsdorf | Dosierpumpe |
US4139122A (en) * | 1977-04-29 | 1979-02-13 | Peter Bauer | Dispensing pump having no check valves |
DE2741803C2 (de) * | 1977-09-16 | 1984-10-04 | Wilhelm Hedrich Vakuumanlagen GmbH und Co KG, 6332 Ehringshausen | Vorrichtung zum Fördern und/oder Dosieren flüssiger bis hochviskoser Medien |
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 |
JPS5574885A (en) * | 1978-11-30 | 1980-06-05 | Sharp Corp | Liquid feeder |
DK143719C (da) * | 1979-01-03 | 1982-03-08 | Radiometer As | Fremgangsmaade til udluftning af en vaeskedoserende stempelpumpe og stempelpumpe med et arrangement til brug ved udoevelse affremgangsmaaden |
US4236877A (en) * | 1979-04-18 | 1980-12-02 | Curtis-Dyna Products Corporation | Highly accurate low volume metering pump |
US4375864A (en) * | 1980-07-21 | 1983-03-08 | Scholle Corporation | Container for holding and dispensing fluid |
US4336800A (en) * | 1980-08-01 | 1982-06-29 | Oximetrix, Inc. | Intravenous metering device |
-
1982
- 1982-03-24 DE DE3210821A patent/DE3210821C2/de not_active Expired
-
1983
- 1983-03-22 US US06/557,150 patent/US4523903A/en not_active Expired - Fee Related
- 1983-03-22 WO PCT/EP1983/000084 patent/WO1983003447A1/en active IP Right Grant
- 1983-03-22 CH CH6257/83A patent/CH662616A5/de not_active IP Right Cessation
- 1983-03-22 IT IT20201/83A patent/IT1160534B/it active
- 1983-03-22 DE DE8383901075T patent/DE3367001D1/de not_active Expired
- 1983-03-22 JP JP58501176A patent/JPS59500423A/ja active Pending
- 1983-03-22 AU AU14758/83A patent/AU1475883A/en not_active Abandoned
- 1983-03-22 EP EP83901075A patent/EP0104215B1/de not_active Expired
- 1983-11-22 DK DK534583A patent/DK534583A/da not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO8303447A1 * |
Also Published As
Publication number | Publication date |
---|---|
US4523903A (en) | 1985-06-18 |
DK534583D0 (da) | 1983-11-22 |
AU1475883A (en) | 1983-10-24 |
DE3210821A1 (de) | 1983-10-13 |
CH662616A5 (de) | 1987-10-15 |
JPS59500423A (ja) | 1984-03-15 |
WO1983003447A1 (en) | 1983-10-13 |
DK534583A (da) | 1983-11-22 |
IT1160534B (it) | 1987-03-11 |
DE3367001D1 (en) | 1986-11-20 |
EP0104215B1 (de) | 1986-10-15 |
DE3210821C2 (de) | 1986-01-09 |
IT8320201A0 (it) | 1983-03-22 |
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