WO2012003976A2 - Dosierpumpenaggregat - Google Patents
Dosierpumpenaggregat Download PDFInfo
- Publication number
- WO2012003976A2 WO2012003976A2 PCT/EP2011/003355 EP2011003355W WO2012003976A2 WO 2012003976 A2 WO2012003976 A2 WO 2012003976A2 EP 2011003355 W EP2011003355 W EP 2011003355W WO 2012003976 A2 WO2012003976 A2 WO 2012003976A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- spring
- pump unit
- dosing pump
- connecting rod
- unit 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.)
- Ceased
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
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
-
- 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
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
-
- 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
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0426—Arrangements for pressing the pistons against the actuated cam; Arrangements for connecting the pistons to the actuated cam
-
- 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
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
Definitions
- the invention relates to a metering pump unit according to the preamble of claim 1.
- Dosing pump units which have a metering space and a displacer body adjoining them, for example in the form of a membrane. This displacer is moved linearly via a connecting rod.
- the connecting rod is moved in such known Dosierpumpenaggregaten via an electric drive motor, in particular a stepping motor.
- a compression spring acts as a spring accumulator on the connecting rod.
- it is difficult to mount the connecting rod and spring since the spring can lead to an inclination of the connecting rod due to lateral forces occurring in compression, which in turn leads to side forces on the membrane with a consequent faster wear of the membrane. Therefore, adjustment screws are provided in known constructions to correct the Pleuelauschal.
- the metering pump unit according to the invention has a metering space whose volume can be changed by a displacer adjacent to the metering space or arranged in the metering space.
- This displacer may for example be a membrane which forms a side wall of the metering chamber.
- the displacer is linearly movable via a connecting rod, which in turn is optionally set via a gear by a rotating drive motor in motion.
- This forms a spring store, which stores energy in one stroke direction, in order to then release it again in the other stroke direction.
- the spring is compressed in the suction stroke and then releases its energy during the pressure stroke by relaxation.
- the shift spring acts on the connecting rod in a direction of movement, preferably the direction of movement for the pressure stroke, with an additional force.
- the helical spring is configured such that it has no applied spring end at least at one axial end in the relaxed state. Ie. the free end of the coil spring is not applied to the following turn. Rather, the invention provides that projects at least one axial end in the relaxed state, the end of the spring wire relative to the subsequent turn axially, that is spaced.
- it has been customary to form coil springs for their intended use at their ends so that the free end is applied to the wire of the adjacent adjacent coil. This embodiment will now be deviated in accordance with.
- the spring wire is cut to length at at least one axial end such that the last turn also extends helically up to the axial end of the spring wire and the end of the spring wire projects axially at the axial end in relation to the subsequent turn.
- the spring wire is preferably ground adjacent to the free end. The ground surface thus extends normal to the spring longitudinal axis.
- a planar contact surface is created, which preferably extends over an angular or circumferential region of 200 ° to 300 ° about the longitudinal axis of the spring.
- This non-adjacent design of the spring end has the advantage that during compression of the spring less or no lateral forces occur, which would lead to an inclination of the connecting rod and thus to an undesired lateral load on the displacement body, in particular a membrane. So can be dispensed with additional adjustment discs and the assembly is significantly simplified. At the same time, however, the undesired lateral load on the displacement body, for example on the membrane, is reduced, as a result of which the service life of the membrane is increased.
- the coil spring is configured at both opposite axial ends in the described manner, d. H. configured so that in the relaxed state, the end of the spring wire projects axially relative to the subsequent turn, d. H. not present. In this way, unwanted lateral forces or transverse forces normal to the spring axis are avoided at both axial ends.
- the described ground contact surface is preferably formed at both axial ends.
- the ends of the spring wire are connected to both axial ends of the helical spring. the same angular position with respect to the longitudinal axis of the coil spring located. Ie. the axial ends at both ends lie on the same line or an imaginary axis parallel to the spring longitudinal axis.
- the coil spring has at least one axial end an end configuration produced only by cutting the spring wire to length. Ie. Here the spring wire is simply cut off without any further special shaping.
- the region directly adjacent to the end of the spring wire is machined, for example by grinding, as described above, in order to form a planar contact surface transversely or at right angles to the spring longitudinal axis.
- the spring wire is thereby ground so that a flat contact surface is created, which extends transversely in the relaxed state of the compression spring, ie substantially normal to the spring axis and over more than a quarter, preferably over 50% to 90, more preferably between 55% and 85% of the circumference based on the spring longitudinal axis runs.
- Fig. 1 is a sectional overall view of the invention
- Fig. 2 shows schematically the compression spring used in this metering pump as spring storage.
- the metering pump unit according to the invention has, in a known manner, a drive housing 2, in which the drive described in more detail later is arranged, and to which a pump head 4 is attached on one side.
- a metering chamber 6 is formed, which is bounded on a side surface by a membrane 8, which serves as a displacement body.
- the membrane 8 is driven by a connecting rod 10, ie moved linearly along the axis of movement X back and forth.
- an electric drive motor 12 is provided, which may be formed, for example, as a stepper motor.
- the rotating drive motor 12 is offset via a gear transmission 14 and an eccentric 16, the connecting rod 10 in the desired linear oscillating movement.
- a compression spring 20 is arranged as a spring accumulator.
- the compression spring 20 is designed as a helical spring and is supported with its end facing away from the membrane 8 on a contact surface of the carrier 18 and with the opposite end to a contact disk 22, which is connected to the connecting rod 10.
- the compression spring 20 is arranged so that it is in the suction stroke, ie when the connecting rod 10 is retracted and moved away from the dosing 6, and in the subsequent pressure stroke, when the connecting rod 10 moves to the dosing 6 and the membrane. 8 is pressed in the dosing chamber 6, relaxed.
- the compression spring 20 absorbs energy in the suction stroke, which then releases it in the pressure stroke as an additional pumping energy via the connecting rod 10 to the membrane 8.
- the compression spring 20 is shown enlarged in its relaxed state. It can be seen that at both axial ends 24, the ends 26 of the spring wire are formed so that they protrude in the axial direction X via the subsequent turn 28. Ie the Fe the ends of the spring wire 26 are not applied to the last turn 28. Rather, the ends 26 of the spring wire are cut substantially simply, without any special further deformation of the axial end of the spring would take place. Only the last section 30 of the winding 28 adjoining the end of the spring wire 26 is machined so that a planar contact surface is created which extends normal to the longitudinal axis X. However, this section 30 does not extend over the entire circumference with respect to the longitudinal axis X but only over a circumferential section between 50% and 90% of the circumference, preferably over an angular range between 200 ° and 300 °.
- the ends 26 of the spring wire lie at the same angle relative to the longitudinal axis X, ie, on a line or imaginary axis parallel to the longitudinal axis X, in the same circumferential region.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Springs (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201180033799.9A CN103168173B (zh) | 2010-07-09 | 2011-07-06 | 计量泵机组 |
| US13/808,762 US9388800B2 (en) | 2010-07-09 | 2011-07-06 | Dosing pump arrangement |
| JP2013518978A JP5941913B2 (ja) | 2010-07-09 | 2011-07-06 | 定量ポンプ装置 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP10007087.9A EP2405139B1 (de) | 2010-07-09 | 2010-07-09 | Dosierpumpenaggregat |
| EP10007087.9 | 2010-07-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2012003976A2 true WO2012003976A2 (de) | 2012-01-12 |
| WO2012003976A3 WO2012003976A3 (de) | 2013-04-04 |
Family
ID=42931854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2011/003355 Ceased WO2012003976A2 (de) | 2010-07-09 | 2011-07-06 | Dosierpumpenaggregat |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9388800B2 (de) |
| EP (1) | EP2405139B1 (de) |
| JP (1) | JP5941913B2 (de) |
| CN (1) | CN103168173B (de) |
| WO (1) | WO2012003976A2 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114837912B (zh) * | 2022-05-17 | 2023-09-22 | 众和科泰(北京)科技有限公司 | 一种恒排量轮压油泵及包含该油泵的自动化设备 |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3314365A (en) * | 1964-08-24 | 1967-04-18 | Douglas E Ritchie | Direct acting variable pump |
| US3381591A (en) * | 1967-04-12 | 1968-05-07 | Gen Motors Corp | Fuel pump with oil seal diaphragm |
| US3799704A (en) * | 1972-11-24 | 1974-03-26 | Gen Motors Corp | Washer pump assembly |
| DE2626954C2 (de) * | 1976-06-16 | 1985-04-11 | Schmidt, Kranz & Co Gmbh, Zweigniederlassung Maschinenbau, 3421 Zorge | Steuerschieberanordnung für eine durch Druckluft angetriebene Hydraulikpumpe |
| US4621990A (en) | 1985-03-01 | 1986-11-11 | The Gorman-Rupp Company | Diaphragm pump |
| JP2768127B2 (ja) | 1992-04-07 | 1998-06-25 | 株式会社日立製作所 | 直動形サーボ弁 |
| JP3294442B2 (ja) * | 1994-09-07 | 2002-06-24 | 高周波熱錬株式会社 | 圧縮コイルばね |
| DE19623537C2 (de) * | 1996-06-13 | 2002-03-28 | Bwt Wassertechnik Gmbh | Dosierpumpe und Dosierverfahren für Flüssigkeiten |
| KR19980079426A (ko) * | 1997-03-25 | 1998-11-25 | 마사히로 오케사쿠 | 워터젯 룸 용 플런저 펌프 |
| JP3936427B2 (ja) * | 1997-04-08 | 2007-06-27 | Nskワーナー株式会社 | 圧縮コイルばね |
| JP3280274B2 (ja) | 1997-04-30 | 2002-04-30 | 津田駒工業株式会社 | 水噴射式織機のポンプ装置 |
| JP2000213455A (ja) * | 1999-01-22 | 2000-08-02 | Precision Spring Kk | 液体注出ポンプ用樹脂ばね |
| NL1013446C2 (nl) * | 1999-11-01 | 2001-05-02 | Skf Eng & Res Centre Bv | Inrichting in een smeermiddelpomp. |
| JP4439723B2 (ja) * | 2000-12-28 | 2010-03-24 | 株式会社ミクニ | 燃料ポンプ |
| EP1415092A1 (de) * | 2001-08-08 | 2004-05-06 | CRT Common Rail Technologies AG | Hochdruckförderpumpe |
| US20050238506A1 (en) * | 2002-06-21 | 2005-10-27 | The Charles Stark Draper Laboratory, Inc. | Electromagnetically-actuated microfluidic flow regulators and related applications |
| ATE360137T1 (de) * | 2004-12-30 | 2007-05-15 | Grundfos Management As | Dosierpumpenaggregat |
| US20090266840A1 (en) * | 2005-11-15 | 2009-10-29 | Foam In Place Co., Ltd. | Substance Injecting Apparatuses and Methods for Using Same |
| JP2008045441A (ja) | 2006-08-11 | 2008-02-28 | Toyota Motor Corp | 液体用ポンプ |
| CN201060011Y (zh) * | 2007-06-08 | 2008-05-14 | 罗献尧 | 机械隔膜计量泵 |
-
2010
- 2010-07-09 EP EP10007087.9A patent/EP2405139B1/de active Active
-
2011
- 2011-07-06 WO PCT/EP2011/003355 patent/WO2012003976A2/de not_active Ceased
- 2011-07-06 CN CN201180033799.9A patent/CN103168173B/zh active Active
- 2011-07-06 JP JP2013518978A patent/JP5941913B2/ja active Active
- 2011-07-06 US US13/808,762 patent/US9388800B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103168173B (zh) | 2016-04-20 |
| EP2405139A1 (de) | 2012-01-11 |
| WO2012003976A3 (de) | 2013-04-04 |
| CN103168173A (zh) | 2013-06-19 |
| JP2013534591A (ja) | 2013-09-05 |
| JP5941913B2 (ja) | 2016-06-29 |
| US9388800B2 (en) | 2016-07-12 |
| EP2405139B1 (de) | 2017-08-16 |
| US20130177462A1 (en) | 2013-07-11 |
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