EP1456539B1 - Pompe de dosage - Google Patents

Pompe de dosage Download PDF

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Publication number
EP1456539B1
EP1456539B1 EP02782831A EP02782831A EP1456539B1 EP 1456539 B1 EP1456539 B1 EP 1456539B1 EP 02782831 A EP02782831 A EP 02782831A EP 02782831 A EP02782831 A EP 02782831A EP 1456539 B1 EP1456539 B1 EP 1456539B1
Authority
EP
European Patent Office
Prior art keywords
valve
pump
drive
metering pump
motor
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
Application number
EP02782831A
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German (de)
English (en)
Other versions
EP1456539A1 (fr
Inventor
Erwin Bolt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KNF Flodos AG
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KNF Flodos AG
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Publication date
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Publication of EP1456539A1 publication Critical patent/EP1456539A1/fr
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Publication of EP1456539B1 publication Critical patent/EP1456539B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/0076—Piston machines or pumps characterised by having positively-driven valving the members being actuated by electro-magnetic means
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F04B49/065—Control using electricity and making use of computers
    • 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
    • F04B2201/00—Pump parameters
    • F04B2201/02—Piston parameters
    • F04B2201/0201—Position of the piston
    • 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
    • F04B2201/00—Pump parameters
    • F04B2201/12—Parameters of driving or driven means
    • F04B2201/1208—Angular position of the shaft

Definitions

  • the invention relates to a metering pump, in particular a membrane metering pump with a working space limiting working diaphragm or the like displacement element and a pump drive for an oscillating movement of the displacement element, wherein the pump drive is direction reversible and the displacement element is movable back and forth, wherein a position sensor for position detection of the pump drive and an electronic control are provided, and with a pump head, in which an inlet valve and an outlet valve are arranged, wherein at least one of the valves is externally controlled and has a motorized valve drive as defined in the preamble of claim 1.
  • a metering pump is for example from the EP-A-1 132 616 known.
  • Metering pumps of this type are known in different embodiments. So you know dosing pumps that work with a magnetic drive and accordingly perform fast strokes. Due to the pulse-like promotion arise for the control of the valves sufficient pressure differences.
  • the change in the delivery stroke takes place by the pump drive for different rotary sections with a correspondingly different stroke, starting from a defined starting position, is moved back and forth. Even with this metering occur at the adjustable, low dosing sealing problems in the valves, so that the desired by the operation of the pump metering can be significantly reduced.
  • metering pumps are known in which a mechanical change of the stroke length is made for metering quantity adjustment.
  • a mechanical change of the stroke length is made for metering quantity adjustment.
  • the fluid is ejected at a correspondingly high speed. This pulse-like conveying is undesirable in many applications of metering pumps.
  • a generic metering pump is known, which is designed to promote a predeterminable volume of a liquid in a range of less than about 1 ml. It has a lifting drive for a diaphragm, to whose provision a return spring is provided. For large flow rates with practically continuous delivery and / or high delivery pressures this metering pump is unsuitable.
  • Object of the present invention is to provide a metering pump, with a wide operating range can be covered with smallest Dosiermengen and high repeatability, an exact adjustability of the pump to a variety of operating conditions, the pump, both at larger and smallest flow rates a high dosing accuracy should and should also be extremely low while maintaining a high dosing accuracy and the conveying speed.
  • the pump drive has a positioning motor and an eccentric or crank drive with a peripheral crank member and a connecting rod connected to the working diaphragm or the like displacement element, that the crank member for lower deflections of the working diaphragm against the maximum possible deflections in a circulating movement , in any area within the total circulation movement oscillating back and forth is movable for a compared to the maximum flow rate reduced flow, and that the electronic control at least with the or motor valve actuators of the inlet and / or outlet valve, is connected to the positioning of the pump drive and the position sensor for detecting the position of the displacement element and / or the pump drive.
  • the pendulum stroke are influenced depending on the position within the total work area. So can be influenced by a task adapted to the selection of the position of the pendulum stroke movement within a 360 ° total work movement, the effective stroke of the displacement element.
  • a pendulum stroke movement in the region of a dead center of a pump drive with a crank mechanism leads the displacement element within the extreme positions in the top and bottom dead center of the crank mechanism back and forth by the driving positioning motor is reversed accordingly, so that given a rotational movement results in a lower effective stroke than in a region between these two dead center.
  • the metering pump according to the invention can be operated both in any area of the total working movement of your pump drive with pendulum reciprocating working stroke as well as circumferentially with maximum working stroke and correspondingly maximum flow rate per stroke. As a result, a wide range of applications of the metering pump is given.
  • both the number of working strokes of the working membrane or the like per unit time and / or the drive speed can be adjusted for the pendulum stroke with reduced amplitude relative to the maximum amplitude.
  • the metered amount can be influenced and also the pumping characteristic, in particular with regard to the conveying speed.
  • a small stroke at high operating speed or vice versa a large stroke at be set low working speed.
  • the electronic control is designed to set a non-uniform drive speed of the drive motor, in particular for a fast suction stroke and a contrast slower Dosierhub.
  • the compensation corresponds to almost a sinusoidal movement with the superposition of the own for diaphragm pumps, hydraulic phenomena.
  • the appropriate stroke compensation can be specified by a speed curve per revolution or stroke, which is parameterized in the electronic control.
  • the electronic control can be designed for the variable control of the motor or the valve actuators of the inlet and / or outlet valve as a function of the position of the displacement element. Furthermore, there is the possibility that the electronic control for controlling the motor or the valve actuators of the inlet and / or outlet valve in response to different operating parameters, in particular depending on the operating pressure, the speed, the consistency of the pumped medium and the like is formed.
  • the switching positions of the valve or valves within a revolution or a Pendelhub Symposiumes depending on the operating pressure are chosen such that the delivery rate drop due to back pressure is minimized.
  • the appropriate switching positions can be determined by tests and there is also the possibility of a variable correction of the switching positions depending on the Operating pressure, if this is changed.
  • the corresponding specifications can be made manually, analog or digital.
  • the electronic control can have a memory device for storing different operating parameters and for assigning these operating parameters to different control times of the valve or valves.
  • the stored in the memory device operating parameters can be either manually selected or it is made a selection by measuring the actual operating parameters and assignment to the stored operating parameters.
  • corresponding measuring devices are provided for measuring, for example, the operating pressure, the backpressure, the rotational speed and the like.
  • the inlet and / or the outlet valve may have as a motorized valve drive an electromagnetic lifting magnet which has a guided by means of spaced leaf springs lifting armature, which is in driving connection with a valve closing body.
  • the mounting of the armature of the lifting magnet by means of at least two leaf springs results in a spring parallelogram, which is virtually wear-free and insensitive to contamination, since no sliding guide bearing parts are present.
  • the armature is guided in the stroke direction exactly and radially without play.
  • the lifting drive for the inlet valve and / or possibly also for the outlet valve is particularly durable by these measures.
  • at least one of the leaf springs of the lifting armature guide is biased in the closing direction of the externally operated valve.
  • At least one operable by the pump medium valve may be formed in particular with a resilient valve disc which rests in the closed position with a flat side on the one Venilsitz forming opening edge of an inflow channel and that on the side facing away from the inflow channel of the valve disc within the projection extension of the inflow channel, at least in the valve opening position the valve disc supporting, web-like abutment is provided.
  • the proposed design of the valve provides a good seal even with the possibly occurring during operation only small pressure differences.
  • the pump has good vacuum properties even at low operating speeds.
  • valve forms a complete, interchangeable unit and valve insert with an abutment and a discharge channel having abutment plate, a valve receiving plate and the valve disc is formed and that preferably the abutment plate and the valve receiving plate have interlocking Randanformept and especially welded together in the assembly position, glued or the like are connected.
  • the parts for the complete valve inserts can thus be produced independently of the pump head into which the valve insert is inserted, which has considerable advantages in terms of accuracy in terms of injection technology.
  • the high precision of the valve parts leads inter alia to a stress-free storage of the valve disc, which is a prerequisite for reliable operation of the valves with good sealing even at low pressure differences and very slow motion sequences.
  • the valve inserts can be replaced very easily overall.
  • the pump drive can be a controlled or a regulated motor, in particular a stepping motor or a control circuit operating in a closed loop Motor, for example, a servo DC motor or the like, have.
  • a closed loop Motor for example, a servo DC motor or the like.
  • This makes it possible to move a defined angle at a defined speed.
  • the direction of rotation of the motor is reversible, so that within the total working movement, on the other hand, the smaller-stroke pendulum lifting movements are feasible.
  • a non-contact such as opto-electronic or magnetic position sensor is provided as a position sensor, which cooperates with the positioning motor or a part driven by this and is connected to the control electronics.
  • the position of the working diaphragm in each operating phase is known, so that accordingly receives a positioning feedback on a drive motor operating in a control loop and on the other hand can be exactly matched to the position of the working diaphragm, the inlet and / or outlet valve to be controlled.
  • the position sensor can be designed so that it emits a reference signal at prominent positions, for example, the upper or lower dead center, from which the intermediate positions can be calculated within a revolution or a pendulum motion of the pump drive.
  • the position sensor can also have an encoder, can be closed by the directly to the respective position of the pump drive or driven therefrom working diaphragm.
  • a metering pump 1 shown in FIG. 1 has a motor-driven pump drive 2 for an oscillating movement of a displacement element.
  • the metering pump 1 has a pump housing 3 with a pump head 4, in which at least one inlet valve and one outlet valve are arranged.
  • electromagnetic linear actuators 5, 6 are provided.
  • the electromotive pump drive 2, the electromagnetic linear actuators 5, 6 for the valves and a position sensor for detecting the position of the pump drive are connected to an electronic controller 7.
  • the pump drive 2 formed by a positioning motor is variably controllable in terms of its speed and its direction of rotation.
  • the electronic control 7 is designed so that the positioning motor of the pump drive in any area of its total working movement with a predetermined stroke oscillating back and forth. By means of this pendulum stroke movement, it is possible to set a delivery quantity reduced in comparison to the maximum delivery quantity.
  • the pump drive with a predetermined angle of rotation and a predetermined speed is operable.
  • the valves provided in the embodiment of Figure 1 with electromagnetic linear actuators 5 and 6 also allow the working position of the pump drive arbitrarily assignable closing and opening times. It can thus specify a variety of operating parameters in order to adapt the pump to a variety of operating conditions can.
  • FIG. 2 shows a sectional view of the internal structure of a metering pump according to the invention.
  • This is designed as a diaphragm pump with a diaphragm 8 as a displacement element, wherein the diaphragm has a crank drive 9 as a pump drive with a peripheral crank member 10 and connected to the diaphragm 8 connecting rod 11.
  • the crank member 10 is connected to the positioning motor 12 (see Fig. 3).
  • the inlet valve 13 is provided with an electromagnetic lifting drive 5, while the outlet valve is a valve which can be actuated by the conveying medium.
  • the outlet valve 14 is designed as sensitive to small pressure differences valve. For certain dosing tasks, which work with a minimum conveying speed, this training with different valves well used.
  • valve 15 shown in Figure 5 may optionally be provided as an inlet valve or exhaust valve. This valve 15 is designed so that it shows a reliable sealing behavior even at low working or delivery speeds and the resulting low differential pressures between the suction side and pressure side.
  • the valve is designed as a disk valve and essentially has a re-storage plate 16, a valve disk 17 and a valve receiving plate 18. From these three parts 16, 17 and 18 a complete, can-shaped unit is formed as a valve core. This valve insert can be inserted into a corresponding receiving recess of the pump head.
  • the valve disk 17 With its flat side facing the suction side 19 lies in the closed position on the opening edge 20 of a central inflow channel 21 forming a valve seat in the valve receiving plate 18.
  • the valve disc 17 is held by positioning, which are arranged laterally adjacent to the opening edge and engage in open-edged recesses of the valve disc 17.
  • the re-storage plate 16 has within the projection extension of the inflow channel of the valve receiving plate 18 on a web-like revelation 22, via which the valve disc 17 is supported in the open position approximately along a diameter line.
  • valve disk tabs are pivoted to the return plate 16 out, so that the inflow channel 21 is open.
  • the distance of the plane passing through the support point of the abutment 22 from the plane formed by the opening edge 20 parallel plane is such that the valve disc 17 between them is kept tension-free. This is a prerequisite for a response of the valve disc even at the slightest pressure differences and also for a fast closing or opening operation.
  • the valve 15 on the pressure side of this is used turned by 180 degrees.
  • the electromagnetic lifting drive 5 has a guided by means of spaced-apart leaf springs 23, 24 lifting armature 25 which is in driving connection with a valve closing body 26.
  • a sleeve-shaped iron pole 27 is arranged in the axial extension of the lifting armature 25 in the axial extension of the lifting armature 25.
  • a coil 28 is arranged around this and the lifting armature.
  • a parallelogram for the lifting armature 25 is formed, so that no sliding guide bearing parts are required.
  • the lifting armature 25 is guided in the stroke direction exactly and radially without play.
  • at least one of the two leaf springs of the lifting armature guide is biased in the closing direction.
  • the valve is thereby in the de-energized state in the closed position, which is shown in Figure 2.
  • a rocker arm 29 is provided, which is coupled with its drive end with an axis connected to the lifting armature 30 and is connected at its other end to the valve closing body 26.
  • a Wipplagerung 31 is provided which surrounds the rocker arm 29 sealingly and which also seals a valve chamber to the outside.
  • the Wipplagerung is preferably designed as an elastomer passage, so that an absolute tightness is given.
  • the metering pump 1 is, as can be seen particularly well in Figures 3 and 4, equipped with a position sensor 32 for detecting the position of the pump drive or the displacement element forming membrane 8.
  • the position sensor has a magnet 33 which revolves with the crank member 10 and a magnetic sensor, which is preferably designed as a Hall sensor and is fixedly arranged next to the orbit of the magnet 33. It is thus generated with each revolution of the pump drive, a reference signal to which the further positioning oriented.
  • the reference signal is used for example for resetting or for generating a certain correction value.
  • stepper motor When using a stepper motor smallest step angles are possible, so that the membrane 8 can be brought into any position within its total work area. The adjustment can be extremely slow, with over several minutes extending strokes are possible, but on the other hand can also be used at high speed to achieve a high flow rate.
  • contactless position sensor shown in the exemplary embodiment it is also possible to use other, for example, optoelectronic position sensors, which optionally emit a large number of position data in the course of one revolution.
  • a servo DC motor instead of a stepper motor and a working in a loop engine, for example a servo DC motor can be used.
  • the positioning motor 2, the electromagnetic lifting drives 5 and 6 for the inlet valve 13 and the outlet valve 14 as well as the position sensor 32 are connected to the electronic control 7.
  • the operation of the pump can be varied within wide limits.
  • the electromagnetic lifting drives 5, 6 of the valves in dependence on the position of the membrane. 8 are controlled.
  • this option is advantageous because after a dosing with expulsion of the fluid from the pressure channel, an undesirable lagging or dripping of fluid can be avoided by the conveying direction is switched by reversing the two valves.
  • a partial stroke of the working diaphragm with a reversed valve closing sequence is generally sufficient. This means that in the suction stroke of the diaphragm with enlargement of the working space, the exhaust valve is opened while the inlet valve is closed.
  • the metering accuracy of the metering pump 1 can be substantially improved by this measure and it is also a simpler handling when setting the Dosiermenge possible.
  • the metering pump 1 with externally controlled inlet and outlet valve 13,14 can be used not only for a return promotion to avoid caster, but optionally for continuous delivery in both directions.

Claims (17)

  1. Pompe de dosage (1), en particulier pompe de dosage à membrane comportant une membrane de travail ou un élément de refoulement similaire, délimitant une chambre de travail, et un système d'entraînement de pompe (2) pour un mouvement oscillant de l'élément de refoulement, le système d'entraînement de pompe (2) étant apte à être inversé en direction et l'élément de refoulement étant apte à se déplacer en va-et-vient, sachant qu'il est prévu un capteur de position destiné à détecter la position du système d'entraînement de pompe (2) et un dispositif de commande (7) électronique, et comportant une partie supérieure, dans laquelle sont montées une soupape d'admission et une soupape de sortie, au moins l'une des soupapes étant commandée de l'extérieur et comportant une commande de soupape motorisée, caractérisée en ce que le système d'entraînement de pompe (2) comporte un moteur de positionnement et une transmission à excentrique ou transmission par bielle-manivelle (9) avec un organe de manivelle (10) rotatif et une bielle (11) reliée à la membrane de travail ou élément de refoulement similaire, en ce que, pour de faibles déplacements de la membrane de travail par rapport aux déplacements possibles au maximum lors d'un mouvement de rotation, l'organe de manivelle (10) est apte à se déplacer en va-et-vient, de manière oscillante dans une zone quelconque à l'intérieur du mouvement de rotation global, pour un volume de transport réduit par rapport au volume de transport maximal, et en ce que le dispositif de commande (7) électronique est relié au moins avec les commandes motorisées de la soupape d'admission et/ou de la soupape de sortie (14), avec le moteur de positionnement du système d'entraînement de pompe (2), ainsi qu'avec le capteur de position destiné à détecter la position de l'élément de refoulement et/ou du système d'entraînement de pompe (2).
  2. Pompe de dosage (1) selon la revendication 1, caractérisée en ce que le système d'entraînement de pompe (2) est réalisé en particulier sous forme rotative et est apte à être activé, avec sa partie reliée à l'élément de refoulement, pour un volume de transport par course de travail plus élevé ou maximal par rapport au volume de transport réduit avec une course de travail oscillant en va-et-vient.
  3. Pompe de dosage (1) selon la revendication 1 ou 2, caractérisée en ce que le dispositif de commande (7) électronique est réalisé pour activer de manière variable la ou les commande(s) motorisée(s) de la soupape d'admission (13) et/ou de la soupape de sortie (14) en fonction de la position de l'élément de refoulement.
  4. Pompe de dosage (1) selon l'une quelconque des revendications 1 à 3, caractérisée en ce que le dispositif de commande (7) électronique est réalisé pour activer la ou les commande(s) motorisée(s) de la soupape d'admission (13) et/ou de la soupape de sortie (14) en fonction de différents paramètres de service, en particulier en fonction de la pression de service, de la vitesse de rotation, de la consistance du fluide à transporter et tout autre paramètre similaire.
  5. Pompe de dosage (1) selon l'une quelconque des revendications 1 à 4, caractérisée en ce que le dispositif de commande (7) électronique comporte un dispositif de mémoire pour mémoriser les différents paramètres de service et pour associer ces paramètres de service aux différents instants de commande des soupapes.
  6. Pompe de dosage (1) selon l'une quelconque des revendications 1 à 5, caractérisée en ce qu'il est prévu un ou plusieurs dispositifs de mesure destinés à mesurer les paramètres de service, tels que la pression de service, la contre-pression, la vitesse de rotation, la capacité de transport et tout autre paramètre similaire.
  7. Pompe de dosage (1) selon l'une quelconque des revendications 1 à 6, caractérisée en ce que la soupape (15), actionnée électriquement de l'extérieur, est fermée à l'état non alimenté en courant.
  8. Pompe de dosage (1) selon l'une quelconque des revendications 1 à 7, caractérisée en ce que la soupape d'admission (13) et/ou la soupape de sortie (14) comportent, pour former une commande de soupape motorisée, un aimant de levage (5, 6) électromagnétique, qui comporte un induit (25), qui est guidé au moyen de ressorts à lames (23, 24) écartés l'un de l'autre et qui est en liaison d'entraînement avec un corps de fermeture de soupape (26).
  9. Pompe de dosage (1) selon la revendication 8, caractérisée en ce qu'au moins un des ressorts à lame (23, 24) du guidage d'induit est précontraint dans la direction de fermeture de la soupape (15) actionnée de l'extérieur.
  10. Pompe de dosage (1) selon l'une quelconque des revendications 1 à 9, caractérisée en ce que, outre une soupape actionnée de l'extérieur, au moins une soupape (15) activable par un fluide de transport est réalisée en particulier avec un disque de soupape (17) élastique qui, dans la position de fermeture, repose avec un côté plat sur le bord d'ouverture (20), formant un siège de soupape, d'un conduit d'admission (21), et en ce que sur le côté, opposé au conduit d'admission (21), du disque de soupape, il est prévu à l'intérieur du prolongement en projection du conduit d'admission (21) une butée (22) en forme de nervure, formant appui pour le disque de soupape (17) au moins dans la position d'ouverture de la soupape.
  11. Pompe de dosage (1) selon la revendication 10, caractérisée en ce que la soupape (15) activable par un fluide de transport forme une unité remplaçable complète et est réalisée sous forme d'insert de soupape (21) comportant une plaque de butée (16), munie de la butée (22) et d'un conduit d'évacuation (31), une plaque de réception de soupape (18), ainsi que le disque de soupape (17), et en ce que de préférence la plaque de butée (16) et la plaque de réception de soupape (18) comportent des profilages de bordure entrant en prise les uns avec les autres et, dans la position de montage, sont assemblées l'une à l'autre, en particulier soudées, collées ou similaire.
  12. Pompe de dosage (1) selon l'une quelconque des revendications 1 à 11, caractérisée en ce que la position initiale de la membrane de travail (6) ou élément similaire est identique au début et à la fin d'un processus de dosage et est de préférence la position de point mort inférieure.
  13. Pompe de dosage (1) selon l'une quelconque des revendications 1 à 12, caractérisée en ce que le nombre de courses de travail de la membrane de travail (6) ou de l'élément similaire par unité de temps et/ou la vitesse d'entraînement sont réglables.
  14. Pompe de dosage (1) selon l'une quelconque des revendications 1 à 13, caractérisée en ce que le système d'entraînement de pompe (2) comporte, sous la forme d'un moteur d'entraînement et de positionnement (12), un moteur commandé ou réglé, en particulier un moteur pas à pas ou un moteur travaillant dans un circuit de réglage, par exemple un servomoteur à courant continu ou similaire.
  15. Pompe de dosage (1) selon l'une quelconque des revendications 1 à 14, caractérisée en ce que, pour former le capteur de position (32), il est prévu un capteur de position (32) sans contact, par exemple optoélectronique ou magnétique, qui coopère avec le moteur de positionnement (12) ou une partie entraînée par celui-ci et est relié au dispositif de commande (7) électronique.
  16. Pompe de dosage (1) selon l'une quelconque des revendications 1 à 15, caractérisé en ce que le dispositif de commande (7) électronique est réalisé pour le réglage d'une vitesse d'entraînement non uniforme du moteur d'entraînement, en particulier pour une course d'aspiration rapide et une course de dosage plus lente que cette dernière.
  17. Pompe de dosage (1) selon l'une quelconque des revendications 1 à 16, caractérisée en ce que les deux soupapes sont commandées de l'extérieur et sont aptes à être commandées au choix sous forme de soupape d'admission ou de soupape de sortie pour une inversion de la direction de transport.
EP02782831A 2001-12-20 2002-10-04 Pompe de dosage Expired - Lifetime EP1456539B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10162773A DE10162773A1 (de) 2001-12-20 2001-12-20 Dosierpumpe
DE10162773 2001-12-20
PCT/EP2002/011151 WO2003054392A1 (fr) 2001-12-20 2002-10-04 Pompe de dosage

Publications (2)

Publication Number Publication Date
EP1456539A1 EP1456539A1 (fr) 2004-09-15
EP1456539B1 true EP1456539B1 (fr) 2007-10-31

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP02782831A Expired - Lifetime EP1456539B1 (fr) 2001-12-20 2002-10-04 Pompe de dosage

Country Status (6)

Country Link
US (1) US20040234377A1 (fr)
EP (1) EP1456539B1 (fr)
JP (1) JP4060273B2 (fr)
AT (1) ATE377149T1 (fr)
DE (2) DE10162773A1 (fr)
WO (1) WO2003054392A1 (fr)

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US7335003B2 (en) * 2004-07-09 2008-02-26 Saint-Gobain Performance Plastics Corporation Precision dispense pump
DE102005024363B4 (de) * 2005-05-27 2012-09-20 Fresenius Medical Care Deutschland Gmbh Vorrichtung und Verfahren zur Förderung von Flüssigkeiten
DE102005039772A1 (de) 2005-08-22 2007-03-08 Prominent Dosiertechnik Gmbh Magnetdosierpumpe
US7819642B2 (en) * 2006-08-24 2010-10-26 N.A.H. Zabar Ltd. Reciprocatory fluid pump
JP4425253B2 (ja) * 2006-08-30 2010-03-03 ダイキン工業株式会社 油圧ユニットおよび油圧ユニットにおけるモータの速度制御方法
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DE10162773A1 (de) 2003-07-10
ATE377149T1 (de) 2007-11-15
JP4060273B2 (ja) 2008-03-12
US20040234377A1 (en) 2004-11-25
WO2003054392A1 (fr) 2003-07-03
EP1456539A1 (fr) 2004-09-15
JP2005513340A (ja) 2005-05-12
DE50211149D1 (de) 2007-12-13

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