WO2002046612A1 - Dispositif de pompage pour produits liquides pateux ou sensibles a la turbulence - Google Patents
Dispositif de pompage pour produits liquides pateux ou sensibles a la turbulence Download PDFInfo
- Publication number
- WO2002046612A1 WO2002046612A1 PCT/FR2001/003813 FR0103813W WO0246612A1 WO 2002046612 A1 WO2002046612 A1 WO 2002046612A1 FR 0103813 W FR0103813 W FR 0103813W WO 0246612 A1 WO0246612 A1 WO 0246612A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pumps
- pistons
- phase
- variations
- pump
- Prior art date
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
- 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
-
- 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
- F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
- F04B11/005—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using two or more pumping pistons
-
- 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
- F04B2203/00—Motor parameters
- F04B2203/02—Motor parameters of rotating electric motors
- F04B2203/0209—Rotational speed
-
- 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
- F04B2205/00—Fluid parameters
- F04B2205/01—Pressure before the pump inlet
-
- 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
- F04B2205/00—Fluid parameters
- F04B2205/05—Pressure after the pump outlet
Definitions
- the present invention relates to a pumping device for pasty or turbulence-sensitive liquid products such as, for example, paints or varnishes.
- a first goal to be achieved for pumping pasty or turbulence-sensitive liquid products is to obtain, with a double-acting piston pump, a flow as constant as possible.
- a solution of known type consists in using two pistons, phase shifted so that when one piston passes through its neutral point, the other (or the others) are always in motion , therefore in the pumping phase, which attenuates pressure variations.
- the device of this document DE 44 10 910 uses a fully mechanical system using cams intended to produce a characteristic equation X -Y 2 IC, in which X is the stroke of the piston, Y is the angle of rotation of the cam, and C is a constant.
- Another object of the invention is to provide a pumping device for pasty or turbulence-sensitive liquid products, allowing the use of several pistons, in particular at least two pistons, out of phase so that when piston passes through its neutral point, the other (or the others) are always in movement, therefore in the pumping phase, which attenuates pressure variations, this pumping device being simple and economical to manufacture and quick to implement .
- the subject of the invention is a pumping device for pasty or sensitive liquid products, comprising means for driving a number n of pumps (n being equal to or greater than 2), the displacements of the pistons of which are offset by compared to the others substantially of 1 / n phase, characterized in that the device comprises a programmer, or a means for regulating the drive means, arranged to control the variation of the drive speed of the drive means with a view to smooth the variations in pressure of the total flow of the n pumps and / or compensate for variations in consumption downstream of pasty or sensitive liquid products.
- the pumping device comprises two pistons they are offset with respect to each other by a half-phase. When there are three positions, they are offset from each other by a third of phase; when there are four pistons they are offset by a quarter phase etc ...
- the motor which drives the pistons is controlled by a programmer which prints variations in speed to said motor to compensate for the variations in flow which occur.
- FIG. 1 a schematic view, in side elevation, of an embodiment of a device according to the invention.
- FIG. 1 a front view of the device of Figure 1.
- FIG. 3 a diagram illustrating the operation of the device of Figures 1 and 2.
- the pumping device comprises two pumps la and lb, which are each double piston pumps
- these pumps can advantageously be of the so-called "four ball” type, that is to say that they are constituted by a piston moving with a movement alternating in a cylinder which is provided at each of its ends with an inlet valve and a discharge valve.
- Each piston is driven in an alternating movement by means of a transmission which, as shown by way of example, may be of the connecting rod-crank type.
- This transmission comprises a rotary or flywheel disc 2a, 2b, to which is attached a connecting rod 3a, 3b itself connected at its other end to a slide 4a, 4b moving along a guide means 5a, 5b.
- the rod 6a, 6b of each piston of the pump 1a, 1b is connected to the slide 5a, 5b.
- the two discs 2a, 2b are driven by a single motor 7 to which they are connected by a reduction gear 8.
- the motor 7 is controlled by an electronic programmer 9 to which it is connected by one or more conductors 10, or other wire or wireless transmission means.
- This programmer 9 is connected to pressure detectors 11, which are arranged for the discharge of the upper and lower chambers of the pumps 1a and 1b.
- the two connecting rods-cranks are offset from each other by 90 °; so that when the piston 6a of the pump la is at its top dead center, where its speed is zero, the piston 6b of the pump lb is in a position for which its speed (and therefore its flow) is maximum.
- the increase in the flow rate of the pump lb compensates, at least partially, for the decrease in the flow rate of the pump lb, as can be seen on the curve in FIG. 3.
- n gears are advantageously used, integral with the n cranks.
- n pumps n being equal to or greater than 2
- the fact of having n pumps, n being equal to or greater than 2 is combined with the fact of controlling the speed of the motor so as to vary, by increasing it, the speed of the pistons to appropriate times to smooth out variations in device outlet pressure.
- the electronic box or control programmer 9 is provided with a program which controls the variation of the speed of rotation of the motor 7 as a function of variations in the sum of the output pressures, detected by the sensors 11, and therefore the variation of the speeds of the two pistons 6a and 6b to smooth the variations of the sum of pressures curve as well as possible (thick line curve, Figure 3).
- FIG. 3 the flow rates are shown in a system with two pumps 1a, 1b offset by 90 °.
- Curve A in solid lines illustrates the flow rate of the pump la; the dashed curve B illustrates the flow rate of the pump lb; curve C in thick lines illustrates the sum of the flow rates of the two pumps.
- the disc 2b has a radial window 12 which makes it possible to vary the distance from the center of the point of attachment of the connecting rod 3b to the disc 2b.
- This arrangement is particularly useful when the pumping device has to pump different liquids to be mixed in variable proportions.
- this arrangement is not limited to the case where there are two pumps, for pumping two different liquids: it can be used with "n" pumps and several different products or liquids.
- the invention is not limited to the embodiment of the transmission of the rotary movement of the motor 7 in an alternating movement of the piston 6 by means of a transmission by connecting rod-crank.
- this transmission means allows the pumps to be offset from one another by 1 / n phase, n being the number of pumps.
- the conductors 12 are not only intended to receive the discharge pressure indications coming from the sensors 10, but are also used to transmit signals to means, such as solenoid valves. , making it possible to vary the flow rate of the pumps, without varying their discharge pressure.
- the electronic regulation carried out by the electronic system 9 not only makes it possible to smooth the pressure variations of the total flow of the n pumps, but can also make it possible to compensate for the variations in consumption of the pump liquid which may occur downstream. It is also possible, as is known, to have one or more accumulators downstream of the pumping device.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01999749A EP1339986A1 (fr) | 2000-12-04 | 2001-12-03 | Dispositif de pompage pour produits liquides pateux ou sensibles a la turbulence |
AU2002216159A AU2002216159A1 (en) | 2000-12-04 | 2001-12-03 | Device for pumping thick or turbulence-sensitive products |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR00/15650 | 2000-12-04 | ||
FR0015650A FR2817594B1 (fr) | 2000-12-04 | 2000-12-04 | Dispositif de pompage pour produits epais ou sensibles a la turbulence |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002046612A1 true WO2002046612A1 (fr) | 2002-06-13 |
Family
ID=8857185
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2001/003813 WO2002046612A1 (fr) | 2000-12-04 | 2001-12-03 | Dispositif de pompage pour produits liquides pateux ou sensibles a la turbulence |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1339986A1 (fr) |
AU (1) | AU2002216159A1 (fr) |
FR (1) | FR2817594B1 (fr) |
WO (1) | WO2002046612A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008039787A2 (fr) | 2006-09-26 | 2008-04-03 | Graco Minnesota Inc. | Contrôle motorisé d'arbre à cames électronique pour pompe à piston |
FR2965313A1 (fr) * | 2010-09-29 | 2012-03-30 | Exel Ind | Procede, dispositif et moyen d'entrainement de pompe a double effet a mouvement lineaire alternatif |
CN113332592A (zh) * | 2021-06-04 | 2021-09-03 | 丰凯医疗器械(上海)有限公司 | 一种导管泵组件 |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US879560A (en) * | 1905-10-05 | 1908-02-18 | Daniel F Lepley | Triplex pump. |
GB1254676A (en) * | 1969-05-21 | 1971-11-24 | Snam Progetti | Improvements in or relating to reciprocating metering pumps |
DE2355932A1 (de) * | 1972-11-10 | 1974-05-16 | Morgaardshammar Ab | Pumpe des kolben- oder membrantyps |
US3981620A (en) * | 1972-03-06 | 1976-09-21 | Waters Associates, Inc. | Pumping apparatus |
DE2737062B1 (de) * | 1977-08-17 | 1979-03-29 | Zumtobel Kg | Schubkolbenpumpe zur pulsationsfreien Foerderung einer Fluessigkeit |
FR2490742A1 (fr) * | 1980-09-23 | 1982-03-26 | Bruker Analytische Messtechnik | Pompe a pistons multicorps a debit constant |
FR2580833A1 (fr) * | 1985-04-23 | 1986-10-24 | Gira Sa | Dispositifs de regulation pour pompes doseuses a plusieurs corps et application de ces dispositifs a la chromatographie |
EP0334994A1 (fr) * | 1988-03-28 | 1989-10-04 | Shimadzu Corporation | Pompe alternative délivant un fluide |
DE4410910A1 (de) | 1994-03-29 | 1995-10-05 | Mediador Pumpentechnik Gmbh | Pulsationsarme Hubkolbenpumpe |
US5550259A (en) | 1993-06-18 | 1996-08-27 | The University Of Florida | Clinical marker and therapeutic agent in kidney stone disease and methods of use |
-
2000
- 2000-12-04 FR FR0015650A patent/FR2817594B1/fr not_active Expired - Fee Related
-
2001
- 2001-12-03 WO PCT/FR2001/003813 patent/WO2002046612A1/fr not_active Application Discontinuation
- 2001-12-03 AU AU2002216159A patent/AU2002216159A1/en not_active Abandoned
- 2001-12-03 EP EP01999749A patent/EP1339986A1/fr not_active Withdrawn
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US879560A (en) * | 1905-10-05 | 1908-02-18 | Daniel F Lepley | Triplex pump. |
GB1254676A (en) * | 1969-05-21 | 1971-11-24 | Snam Progetti | Improvements in or relating to reciprocating metering pumps |
US3981620A (en) * | 1972-03-06 | 1976-09-21 | Waters Associates, Inc. | Pumping apparatus |
DE2355932A1 (de) * | 1972-11-10 | 1974-05-16 | Morgaardshammar Ab | Pumpe des kolben- oder membrantyps |
DE2737062B1 (de) * | 1977-08-17 | 1979-03-29 | Zumtobel Kg | Schubkolbenpumpe zur pulsationsfreien Foerderung einer Fluessigkeit |
FR2490742A1 (fr) * | 1980-09-23 | 1982-03-26 | Bruker Analytische Messtechnik | Pompe a pistons multicorps a debit constant |
FR2580833A1 (fr) * | 1985-04-23 | 1986-10-24 | Gira Sa | Dispositifs de regulation pour pompes doseuses a plusieurs corps et application de ces dispositifs a la chromatographie |
EP0334994A1 (fr) * | 1988-03-28 | 1989-10-04 | Shimadzu Corporation | Pompe alternative délivant un fluide |
US5550259A (en) | 1993-06-18 | 1996-08-27 | The University Of Florida | Clinical marker and therapeutic agent in kidney stone disease and methods of use |
DE4410910A1 (de) | 1994-03-29 | 1995-10-05 | Mediador Pumpentechnik Gmbh | Pulsationsarme Hubkolbenpumpe |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8807958B2 (en) | 2006-09-26 | 2014-08-19 | Graco Minnesota Inc. | Electronic camshaft motor control for piston pump |
EP2076673A4 (fr) * | 2006-09-26 | 2014-07-23 | Graco Minnesota Inc | Contrôle motorisé d'arbre à cames électronique pour pompe à piston |
EP2076673A2 (fr) * | 2006-09-26 | 2009-07-08 | Graco Minnesota Inc. | Contrôle motorisé d'arbre à cames électronique pour pompe à piston |
EP3327285A1 (fr) | 2006-09-26 | 2018-05-30 | Graco Minnesota Inc. | Commande de moteur d'arbre à cames électronique pour pompe a piston |
TWI411728B (zh) * | 2006-09-26 | 2013-10-11 | Graco Minnesota Inc | 用於活塞泵的電子凸輪軸馬達控制 |
WO2008039787A2 (fr) | 2006-09-26 | 2008-04-03 | Graco Minnesota Inc. | Contrôle motorisé d'arbre à cames électronique pour pompe à piston |
WO2008039787A3 (fr) * | 2006-09-26 | 2008-08-21 | Graco Minnesota Inc | Contrôle motorisé d'arbre à cames électronique pour pompe à piston |
CN101558240B (zh) * | 2006-09-26 | 2013-03-20 | 格雷索明尼苏达有限公司 | 用于活塞泵的电子凸轮轴电机控制 |
RU2554703C2 (ru) * | 2010-09-29 | 2015-06-27 | Эксель Индюстри | Способ, устройство и средство привода возвратно-поступательного линейного насоса двустороннего действия |
CN102619735A (zh) * | 2010-09-29 | 2012-08-01 | 艾格赛尔工业集团 | 用于驱动线性运动双作用往复泵的方法、设备和装置 |
EP2436925A1 (fr) * | 2010-09-29 | 2012-04-04 | Exel Industries | Procédé, dispositif et moyen d'entraînement de pompe à double effet à mouvement linéaire alternatif |
US9200623B2 (en) | 2010-09-29 | 2015-12-01 | Exel Industries | Method, device and means for driving a reciprocating linear motion double acting pump |
FR2965313A1 (fr) * | 2010-09-29 | 2012-03-30 | Exel Ind | Procede, dispositif et moyen d'entrainement de pompe a double effet a mouvement lineaire alternatif |
CN113332592A (zh) * | 2021-06-04 | 2021-09-03 | 丰凯医疗器械(上海)有限公司 | 一种导管泵组件 |
Also Published As
Publication number | Publication date |
---|---|
FR2817594A1 (fr) | 2002-06-07 |
FR2817594B1 (fr) | 2005-07-01 |
AU2002216159A1 (en) | 2002-06-18 |
EP1339986A1 (fr) | 2003-09-03 |
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