EP2154371A1 - Pumping device - Google Patents

Pumping device Download PDF

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Publication number
EP2154371A1
EP2154371A1 EP08014528A EP08014528A EP2154371A1 EP 2154371 A1 EP2154371 A1 EP 2154371A1 EP 08014528 A EP08014528 A EP 08014528A EP 08014528 A EP08014528 A EP 08014528A EP 2154371 A1 EP2154371 A1 EP 2154371A1
Authority
EP
European Patent Office
Prior art keywords
pulsator
pumping device
line
pump head
main pump
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
Application number
EP08014528A
Other languages
German (de)
French (fr)
Other versions
EP2154371B1 (en
Inventor
Christian Huhnke
Hennings Ladiges
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.)
SPX Flow Technology Germany GmbH
Original Assignee
BRAN and LUEBBE
Bran und Luebbe GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BRAN and LUEBBE, Bran und Luebbe GmbH filed Critical BRAN and LUEBBE
Priority to EP08014528.7A priority Critical patent/EP2154371B1/en
Priority to DK200800165U priority patent/DK200800165U3/en
Priority to EP09777900.3A priority patent/EP2329147B1/en
Priority to US13/058,904 priority patent/US20110135514A1/en
Priority to ES09777900T priority patent/ES2773043T3/en
Priority to PCT/EP2009/005928 priority patent/WO2010017997A2/en
Priority to BRPI0917663A priority patent/BRPI0917663A2/en
Priority to PL09777900T priority patent/PL2329147T3/en
Priority to CN200980131732.1A priority patent/CN102124226B/en
Publication of EP2154371A1 publication Critical patent/EP2154371A1/en
Application granted granted Critical
Publication of EP2154371B1 publication Critical patent/EP2154371B1/en
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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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/06—Pumps having fluid drive
    • F04B43/067—Pumps having fluid drive the fluid being actuated directly by a 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
    • 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
    • F04B53/08—Cooling; Heating; Preventing freezing

Definitions

  • the invention relates to a pump device with a pulsator as a drive element for a main pump head, which is located in a feed line and the working space is provided on the suction side with a check valve and the pressure side with a pressure valve.
  • the invention has for its object to provide a pump device of the type mentioned, which can be used for pumping aggressive fluids at high temperature, and yet operates at low cost with high reliability.
  • This object is achieved in that the working space of the pulsator is directly connected to the working space of the main pump head via a suspension line filled with conveying medium in such a way that the pulsator sucks oscillating conveying medium from the delivery line into the working space of the main pump head or pushes it out of the working space, and that the working space of the pulsator is connected via a vent valve with the suction side of the delivery line.
  • a basic idea of the invention thus lies in the fact that the pulsator acts on a main pump head, which in principle is designed like a piston pump head, but without a piston being required.
  • a pump head suitable for high temperatures and pressures standard component can be used, which represents an overall cost-effective alternative to the known solutions by the combination with a standard diaphragm pump, the principle of a "remote head" - pump is maintained.
  • the wear is further reduced by the fact that any particles present in the pumped medium do not come into contact with the workspace of the pulsator, since the liquid in the pendulum line is moved back and forth only in the scope of the pump stroke, and mixes only slightly with freshly sucked liquid.
  • the pulsator can be designed in membrane or tubular membrane construction as well as in piston or plunger construction. If the pulsator is a diaphragm pump, particles will not get to the membrane. Since high temperatures in the pumped medium decrease in the course of the transfer line, diaphragm pumps can be used with inexpensive plastic membranes, such as PTFE, even at high pressures and high temperatures in the delivery line. Therefore, pumping devices according to the invention are particularly well suited for the conveyance of biomass in the production of biofuel.
  • the inlet into the suction-side delivery line is preferably located above the ventilation valve, so that the gases escape from the working space automatically.
  • a forced ventilation for example with a time and / or pressure-controlled valve, be present.
  • the pendulum line is provided with a cooling.
  • the pendulum line is aligned by the diaphragm pump to the main pump head falling down. The particles thus remain in the region of the main pump head and are returned to the delivery line.
  • the pendulum line is provided with a sink as a receiving space for solid particles in the pumped medium. It is thus provided in the pendulum line, an area which is below the working space of the diaphragm pump, so that the particles accumulate there due to gravity and do not get into the working space of the pulsator.
  • the working chamber of the pulsator is acted upon by a compensating medium to compensate for leakage fade, so that a flow through the pendulum line and a migration of solid particles to the pulsator can be prevented.
  • a further advantageous embodiment of the invention is to arrange a separating piston in the pendulum line.
  • a low drive power is achieved in that a double-acting pulsator and two oppositely driven pump circuits are present, which is particularly advantageous when used in recirculation processes.
  • a pump device 1 has a diaphragm pump 10 serving as a pulsator, a main pump head 11 and a transfer line 12.
  • the main pump head 11 has an inlet 13 and an outlet 14 for installation in a delivery line whose pressure side is denoted by 5 and the suction side by 15.
  • On the inlet side (suction side) is a check valve 16 and the output side (pressure side) a pressure valve 17 is present.
  • the conveying direction is marked with arrow 6.
  • the main pump head 11 corresponds constructively to a pump head of a piston pump. However, he has no piston. His working space 18 is rather directly connected via the pendulum line 12 with a working space 20 of the diaphragm pump 10.
  • the diaphragm pump 10 is provided only with a single connection 7 for the shuttle 12. It has no pump valves. It is only a connection 8 for a vent with a vent valve 9 ( Fig. 2 ) and a connection 4 for a refill reservoir 30 (FIG. Fig. 2 ) available.
  • the hub causes the diaphragm pump 10 via the liquid column in the transfer line 12, the promotion in the main pump head 11th
  • the pendulum line 12 is filled with delivery fluid 21. It leads via a control input 22 of the main pump head 11 to the working space 20 of the diaphragm pump 10.
  • the pendulum line 12 is provided with a cooling, which is formed by a cooling liquid applied to the cooling jacket 23. In this way, a temperature reduction of, for example, about 360 ° C at the main pump head 11, as it typically has to be promoted bio-mass in the bio-fuel production, be made to about 100 ° C at the diaphragm pump 10.
  • the transfer line 12 contains the delivery liquid 21, which may also have solid particles 24, a portion 25 is present in the transfer line 12, which drops from the diaphragm pump 10 to the main pump head 11, and which opens directly into the working chamber 18 of the main pump head 11. At its lowest point the pendulum line 12 is thus at the level of the working space 18 of the main pump head 11. The solid particles 24 remain due to gravity in the working space 18 of the main pump head 11 and do not reach the working space 20 of the diaphragm pump 10. They are the pressure-side delivery line 5 supplied.
  • the membrane pump 10 has a membrane 26, which is hydraulically controlled via a diaphragm control chamber 27.
  • the membrane material is preferably PTFE. Alternatively, elastomers, metallic materials or composite materials can be used.
  • the diaphragm control chamber 27 is acted upon by a piston 28 which is driven by a motor 29 (FIG. Fig. 2 ) is driven.
  • a refilling reservoir 30 filled with a compensating medium is present, which is supplied via a controlled valve 31 (FIG. Fig. 2 ) Emits compensation medium in the working space 20 of the diaphragm pump 10.
  • the feeder is in Fig. 2 denoted by 32.
  • Fig. 2 illustrated configuration has a double-acting pulsator with two pump devices, as shown in Fig. 1 illustrated up.
  • the pump devices are connected in parallel in two counteracted branches A, B.
  • a pumping operation will be described with reference to a branch.
  • the pendulum line 12 and the working space 18 of the main pump head 11 are completely filled with pumped liquid.
  • the check valve 16 and the pressure valve 17 are closed.
  • each main pump head 11 with a single-acting pulsator equal or opposite directions can be controlled.
  • FIG. 3 is shown as a detail of a second embodiment, a portion of a pendulum line 12 '.
  • a separating piston 32 mounted longitudinally displaceably according to a double arrow 34 is arranged in the transfer line 12'. Any existing solid particles 24 thereby remain in a region 32 on the side of the main pump head 11 and can not reach a region 33 on the side of the diaphragm pump.

Abstract

The device has a pulsator as a driving element for a main pump head (11) that lies in a conveyor line (15). The head has an operating area (18) with a check valve on a suction side (16) and a pressure control valve (17) on a pressurized side. An operating area (20) of the pulsator stays in direct connection with the operating area of the head over a recovery pipe (12), so that the pulsator intakes oscillating pumping medium (21) from the conveyor line into the head operating area. The operating area of the pulsator is connected with a suction side of the conveyor line via a venting valve.

Description

Die Erfindung betrifft eine Pumpenvorrichtung mit einem Pulsator als Antriebselement für einen Hauptpumpenkopf, der in einer Förderleitung liegt und dessen Arbeitsraum saugseitig mit einem Rückschlagventil und druckseitig mit einem Druckventil versehen ist.The invention relates to a pump device with a pulsator as a drive element for a main pump head, which is located in a feed line and the working space is provided on the suction side with a check valve and the pressure side with a pressure valve.

Pumpen dieser Art sind aus EP 0919724 B1 und EP 1898093 A1 bekannt. Hierbei wird ein in der Förderleitung liegender Hauptpumpenkopf von einem weiteren Pumpenkopf angetrieben, der als Pulsator bezeichnet wird. Eine derartige Pumpenvorrichtung wird auch als "Remote Head"- Pumpe bezeichnet. Eingesetzt werden derartige Pumpenvorrichtungen typischerweise zum Pumpen von Flüssigkeiten mit hohem Festsstoffanteil und hohen Temperaturen. Die bekannten Pumpen können jedoch bei besonders aggressiven Fördermedien, wie beispielsweise überkritischen wässrigen Lösungen, nicht ohne weiteres eingesetzt werden, insbesondere wenn Prozesse mit sehr großem Durchsatz unter hohen Temperaturen und hohen Drücken vorliegen.Pumps of this type are out EP 0919724 B1 and EP 1898093 A1 known. In this case, a lying in the feed line main pump head is driven by a further pump head, which is referred to as a pulsator. Such a pump device is also referred to as a "remote head" pump. Such pumping devices are typically used to pump high solids and high temperature liquids. However, the known pumps can not readily be used in particularly aggressive media, such as supercritical aqueous solutions, especially when processes are very high throughput at high temperatures and high pressures.

Der Erfindung liegt die Aufgabe zugrunde, eine Pumpenvorrichtung der eingangs genannten Art anzugeben, die zum Pumpen von aggressiven Fördermedien mit hoher Temperatur eingesetzt werden kann, und die dennoch bei geringen Kosten mit hoher Zuverlässigkeit arbeitet.The invention has for its object to provide a pump device of the type mentioned, which can be used for pumping aggressive fluids at high temperature, and yet operates at low cost with high reliability.

Diese Aufgabe wird dadurch gelöst, dass der Arbeitsraum des Pulsators über eine mit Fördermedium gefüllte Pendelleitung unmittelbar mit dem Arbeitsraum des Hauptpumpenkopfes in der Weise in Verbindung steht, dass der Pulsator oszillierend Fördermedium aus der Förderleitung in den Arbeitsraum des Hauptpumpenkopfes ansaugt oder aus dem Arbeitsraum drückt, und dass der Arbeitsraum des Pulsators über ein Entlüftungsventil mit der Saugseite der Förderleitung verbunden ist.This object is achieved in that the working space of the pulsator is directly connected to the working space of the main pump head via a suspension line filled with conveying medium in such a way that the pulsator sucks oscillating conveying medium from the delivery line into the working space of the main pump head or pushes it out of the working space, and that the working space of the pulsator is connected via a vent valve with the suction side of the delivery line.

Ein Grundgedanke der Erfindung liegt somit darin, dass der Pulsator einen Hauptpumpenkopf beaufschlagt, der prinzipiell wie ein Kolbenpumpenkopf ausgebildet ist, ohne dass jedoch ein Kolben erforderlich ist. Auf diese Weise kann als Pumpenkopf ein für hohe Temperaturen und Drücke geeignetes Standardbauteil verwendet werden, welches durch die Kombination mit einer Standard-Membranpumpe insgesamt eine kostengünstige Alternative zu den bekannten Lösungen darstellt, wobei das Prinzip einer "Remote Head"- Pumpe beibehalten wird. Der Verschleiß wird ferner dadurch verringert, dass eventuell im Fördermedium vorhandene Partikel nicht mit dem Arbeitsraum des Pulsators in Berührung kommen, da die Flüssigkeit in der Pendelleitung nur im Umfang des Pumpenhubs hin und her bewegt wird, und sich nur geringfügig mit frisch angesaugter Flüssigkeit mischt. Der Pulsator kann in Membran- oder Schlauchmembranbauweise sowie in Kolben- oder Plungerbauweise ausgeführt sein. Wenn es sich bei dem Pulsator um eine Membranpumpe handelt, gelangen Partikel nicht zur Membran. Da auch hohe Temperaturen im Fördermedium im Verlauf der Pendelleitung abnehmen, können Membranpumpen mit kostengünstigen Kunststoff-Membranen, beispielsweise aus PTFE, auch bei hohen Drücken und hohen Temperaturen in der Förderleitung eingesetzt werden. Daher sind erfindungsgemäße Pumpenvorrichtungen besonders gut zum Fördern von Biomasse bei der Herstellung von Biokraftstoff geeignet.A basic idea of the invention thus lies in the fact that the pulsator acts on a main pump head, which in principle is designed like a piston pump head, but without a piston being required. In this way, as a pump head suitable for high temperatures and pressures standard component can be used, which represents an overall cost-effective alternative to the known solutions by the combination with a standard diaphragm pump, the principle of a "remote head" - pump is maintained. The wear is further reduced by the fact that any particles present in the pumped medium do not come into contact with the workspace of the pulsator, since the liquid in the pendulum line is moved back and forth only in the scope of the pump stroke, and mixes only slightly with freshly sucked liquid. The pulsator can be designed in membrane or tubular membrane construction as well as in piston or plunger construction. If the pulsator is a diaphragm pump, particles will not get to the membrane. Since high temperatures in the pumped medium decrease in the course of the transfer line, diaphragm pumps can be used with inexpensive plastic membranes, such as PTFE, even at high pressures and high temperatures in the delivery line. Therefore, pumping devices according to the invention are particularly well suited for the conveyance of biomass in the production of biofuel.

Ein weiterer Vorteil liegt darin, dass sich aufgrund der Entlüftung Gase aus dem Fördermedium oder Lufteinschlüsse nicht in dem Pumpenraum des Pulsators ansammeln können, sondern in den Prozess zurück geführt werden. Bevorzugt liegt der Eintritt in die saugseitige Förderleitung zu diesem Zweck oberhalb des Entlüftungsventils, so dass die Gase selbsttätig aus dem Arbeitsraum austreten. Alternativ kann eine Zwangsbelüftung, beispielsweise mit einem zeit- und/ oder druckgesteuerten Ventil, vorhanden sein.Another advantage is that due to the venting gases from the fluid or air bubbles can not accumulate in the pump chamber of the pulsator, but are fed back into the process. For this purpose, the inlet into the suction-side delivery line is preferably located above the ventilation valve, so that the gases escape from the working space automatically. Alternatively, a forced ventilation, for example with a time and / or pressure-controlled valve, be present.

Um die Membranpumpe noch weiter temperaturmäßig zu entlasten, besteht eine bevorzugte Weiterbildung der Erfindung darin, dass die Pendelleitung mit einer Kühlung versehen ist.To further relieve the diaphragm pump in terms of temperature, a preferred development of the invention is that the pendulum line is provided with a cooling.

Es erweist sich ferner als vorteilhaft, dass die Pendelleitung von der Membranpumpe zum Hauptpumpenkopf hin fallend ausgerichtet ist. Die Partikel verbleiben somit im Bereich des Hauptpumpenkopfes und werden in die Förderleitung zurückgeführt.It also proves to be advantageous that the pendulum line is aligned by the diaphragm pump to the main pump head falling down. The particles thus remain in the region of the main pump head and are returned to the delivery line.

Alternativ kann es vorteilhaft sein, dass die Pendelleitung mit einer Senke als Aufnahmeraum für Feststoffteilchen im Fördermedium versehen ist. Es wird also in der Pendelleitung ein Bereich vorgesehen, der unterhalb des Arbeitsraums der Membranpumpe liegt, so dass die Partikel sich aufgrund der Schwerkraft dort ansammeln und nicht in den Arbeitsraum des Pulsators gelangen.Alternatively, it may be advantageous that the pendulum line is provided with a sink as a receiving space for solid particles in the pumped medium. It is thus provided in the pendulum line, an area which is below the working space of the diaphragm pump, so that the particles accumulate there due to gravity and do not get into the working space of the pulsator.

Es ist zweckmäßig, dass der Arbeitsraum des Pulsators mit einem Ausgleichsmedium zum Ausgleich von Leckageschwund beaufschlagt ist, so dass ein Durchströmen der Pendelleitung und ein Wandern von Feststoffteilchen zum Pulsator verhindert werden.It is expedient that the working chamber of the pulsator is acted upon by a compensating medium to compensate for leakage fade, so that a flow through the pendulum line and a migration of solid particles to the pulsator can be prevented.

Um den Pulsator noch weiter gegen Feststoffteilchen aus dem Fördermedium zu schützen, besteht eine weitere vorteilhafte Ausgestaltung der Erfindung darin, in der Pendelleitung einen Trennkolben anzuordnen. Durch diese Maßnahme wird der dem Pulsator zugeordnete Teil der Pendelleitung von dem Teil getrennt, welcher dem Hauptpumpenkopf zugeordnet ist.In order to protect the pulsator even further against solid particles from the pumped medium, a further advantageous embodiment of the invention is to arrange a separating piston in the pendulum line. By this measure, the pulsator associated part of the shuttle line is separated from the part which is associated with the main pump head.

Eine geringe Antriebsleistung wird dadurch erreicht, dass ein doppelt wirkender Pulsator und zwei gegensinnig angesteuerte Pumpenkreise vorhanden sind, was besonders beim Einsatz bei Rezirkulationsprozessen vorteilhaft ist.A low drive power is achieved in that a double-acting pulsator and two oppositely driven pump circuits are present, which is particularly advantageous when used in recirculation processes.

Nachfolgend wird die Erfindung anhand von zwei Ausführungsbeispielen weiter erläutert. Es zeigen schematisch:

Fig. 1
einen Vertikalschnitt durch eine erste Ausführung einer Pumpenvorrichtung;
Fig. 2
ein Schaltbild einer aus zwei Pumpenvorrichtungen nach Fig. 1 zusammengesetzten Pumpenkonfiguration; und
Fig. 3
eine Einzelheit einer zweiten Ausführung einer Pumpenvorrichtung.
The invention will be further explained with reference to two embodiments. They show schematically:
Fig. 1
a vertical section through a first embodiment of a pump device;
Fig. 2
a circuit diagram of one of two pump devices after Fig. 1 composite pump configuration; and
Fig. 3
a detail of a second embodiment of a pump device.

Gemäß Fig. 1 weist eine Pumpenvorrichtung 1 eine als Pulsator dienende Membranpumpe 10, einen Hauptpumpenkopf 11 und eine Pendelleitung 12 auf. Der Hauptpumpenkopf 11 hat einen Eingang 13 und einen Ausgang 14 zum Einbau in eine Förderleitung, deren Druckseite mit 5 und deren Saugseite mit 15 bezeichnet sind. Eingangsseitig (saugseitig) ist ein Rückschlagventil 16 und ausgangsseitig (druckseitig) ein Druckventil 17 vorhanden. Die Förderrichtung ist mit Pfeil 6 gekennzeichnet.According to Fig. 1 For example, a pump device 1 has a diaphragm pump 10 serving as a pulsator, a main pump head 11 and a transfer line 12. The main pump head 11 has an inlet 13 and an outlet 14 for installation in a delivery line whose pressure side is denoted by 5 and the suction side by 15. On the inlet side (suction side) is a check valve 16 and the output side (pressure side) a pressure valve 17 is present. The conveying direction is marked with arrow 6.

Konstruktiv entspricht der Hauptpumpenkopf 11 zwar einem Pumpenkopf einer Kolbenpumpe. Er weist jedoch keinen Kolben auf. Sein Arbeitsraum 18 ist vielmehr unmittelbar über die Pendelleitung 12 mit einem Arbeitsraum 20 der Membranpumpe 10 verbunden. Die Membranpumpe 10 ist nur mit einem einzigen Anschluss 7 für die Pendelleitung 12 versehen. Sie weist keine Pumpenventile auf. Es ist lediglich ein Anschluss 8 für eine Entlüftung mit einem Entlüftungsventil 9 (Fig. 2) und ein Anschluss 4 für ein Nachfüllreservoir 30 (Fig. 2) vorhanden. Somit bewirkt der Hub der Membranpumpe 10 über die Flüssigkeitssäule in der Pendelleitung 12 die Förderung im Hauptpumpenkopf 11.Although the main pump head 11 corresponds constructively to a pump head of a piston pump. However, he has no piston. His working space 18 is rather directly connected via the pendulum line 12 with a working space 20 of the diaphragm pump 10. The diaphragm pump 10 is provided only with a single connection 7 for the shuttle 12. It has no pump valves. It is only a connection 8 for a vent with a vent valve 9 ( Fig. 2 ) and a connection 4 for a refill reservoir 30 (FIG. Fig. 2 ) available. Thus, the hub causes the diaphragm pump 10 via the liquid column in the transfer line 12, the promotion in the main pump head 11th

Die Pendelleitung 12 ist mit Förderflüssigkeit 21 gefüllt. Sie führt über einen Steuereingang 22 des Hauptpumpenkopfes 11 zum Arbeitsraum 20 der Membranpumpe 10. Die Pendelleitung 12 ist mit einer Kühlung versehen, die von einem mit Kühlflüssigkeit beaufschlagten Kühlmantel 23 gebildet wird. Auf diese Weise kann eine Temperaturabsenkung von beispielsweise ca. 360°C am Hauptpumpenkopf 11, wie sie typischerweise die zu fördernde Bio-Masse bei der Bio-Kraftstoffherstellung aufweist, auf ca. 100°C an der Membranpumpe 10 vorgenommen werden.The pendulum line 12 is filled with delivery fluid 21. It leads via a control input 22 of the main pump head 11 to the working space 20 of the diaphragm pump 10. The pendulum line 12 is provided with a cooling, which is formed by a cooling liquid applied to the cooling jacket 23. In this way, a temperature reduction of, for example, about 360 ° C at the main pump head 11, as it typically has to be promoted bio-mass in the bio-fuel production, be made to about 100 ° C at the diaphragm pump 10.

Da die Pendelleitung 12 die Förderflüssigkeit 21 enthält, welche auch Feststoffteilchen 24 aufweisen kann, ist ein Abschnitt 25 in der Pendelleitung 12 vorhanden, der von der Membranpumpe 10 zum Hauptpumpenkopf 11 hin abfällt, und der unmittelbar in den Arbeitsraum 18 des Hauptpumpenkopfes 11 mündet. An ihrer tiefsten Stelle liegt die Pendelleitung 12 somit auf dem Niveau des Arbeitsraums 18 des Hauptpumpenkopfes 11. Die Feststoffteilchen 24 verbleiben dadurch aufgrund der Schwerkraft im Arbeitsraum 18 des Hauptpumpenkopfes 11 und gelangen nicht in den Arbeitsraum 20 der Membranpumpe 10. Sie werden vielmehr der druckseitigen Förderleitung 5 zugeführt.Since the transfer line 12 contains the delivery liquid 21, which may also have solid particles 24, a portion 25 is present in the transfer line 12, which drops from the diaphragm pump 10 to the main pump head 11, and which opens directly into the working chamber 18 of the main pump head 11. At its lowest point the pendulum line 12 is thus at the level of the working space 18 of the main pump head 11. The solid particles 24 remain due to gravity in the working space 18 of the main pump head 11 and do not reach the working space 20 of the diaphragm pump 10. They are the pressure-side delivery line 5 supplied.

Die Membranpumpe 10 weist eine Membran 26 auf, die hydraulisch über einen Membransteuerraum 27 angesteuert wird. Als Membranwerkstoff eignet sich vorzugsweise PTFE. Alternativ können auch Elastomere, metallische Werkstoffe oder Verbundwerkstoffe eingesetzt werden. Der Membransteuerraum 27 wird mit einem Kolben 28 beaufschlagt, der von einem Motor 29 (Fig. 2) angetrieben wird. Zum Ausgleich von Leckagen ist ein mit einem Ausgleichsmedium gefülltes Nachfüllreservoir 30 vorhanden, das über ein gesteuertes Ventil 31 (Fig. 2) Ausgleichsmedium in den Arbeitsraum 20 der Membranpumpe 10 abgibt. Die Zuführung ist in Fig. 2 mit 32 bezeichnet.The membrane pump 10 has a membrane 26, which is hydraulically controlled via a diaphragm control chamber 27. The membrane material is preferably PTFE. Alternatively, elastomers, metallic materials or composite materials can be used. The diaphragm control chamber 27 is acted upon by a piston 28 which is driven by a motor 29 (FIG. Fig. 2 ) is driven. To compensate for leaks, a refilling reservoir 30 filled with a compensating medium is present, which is supplied via a controlled valve 31 (FIG. Fig. 2 ) Emits compensation medium in the working space 20 of the diaphragm pump 10. The feeder is in Fig. 2 denoted by 32.

Unter Bezugnahme auf die Fig. 1 und Fig. 2 wird nachfolgend die Funktion der Pumpenvorrichtung beschrieben. Die in Fig. 2 dargestellten Konfiguration weist einen doppelt wirkender Pulsator mit zwei Pumpenvorrichtungen, wie sie in Fig. 1 veranschaulicht sauf. Die Pumpenvorrichtungen sind in zwei gegensinnig angesteuerten Zweigen A, B parallel geschaltet. Zunächst wird ein Pumpvorgang anhand eines Zweiges beschrieben. In einem Ausgangszustand ist der Kolben 28 in die Membransteuerkammer 27 eingefahren und die Membran 26 ist in den Arbeitsraum 20 der Membranpumpe 10 ausgebaucht. Die Pendelleitung 12 und der Arbeitsraum 18 des Hauptpumpenkopfes 11 sind mit Förderflüssigkeit vollständig gefüllt. Das Rückschlagventil 16 und das Druckventil 17 sind geschlossen.With reference to the Fig. 1 and Fig. 2 The function of the pump device will now be described. In the Fig. 2 illustrated configuration has a double-acting pulsator with two pump devices, as shown in Fig. 1 illustrated up. The pump devices are connected in parallel in two counteracted branches A, B. First, a pumping operation will be described with reference to a branch. In an initial state of the piston 28 is retracted into the diaphragm control chamber 27 and the membrane 26 is bulged in the working space 20 of the diaphragm pump 10. The pendulum line 12 and the working space 18 of the main pump head 11 are completely filled with pumped liquid. The check valve 16 and the pressure valve 17 are closed.

Wird der Kolben 28 ausgefahren, bewirkt dies ein Abflachen der Membran 26 und einen Unterdruck im Arbeitsraum 20 der Membranpumpe 10. Der Unterdruck wirkt über die Pendelleitung 12 im Arbeitsraum 18 des Hauptpumpenkopfes, so dass das Rückschlagventil 16 öffnet und Förderflüssigkeit von der Saugseite der Förderleitung 15 angesaugt wird. Beim folgenden entgegengesetzten Hub des Kolbens 28 wird beim Ausbauchen der Membran 26 Druck im Arbeitsraum 20 der Membranpumpe 10 erzeugt, der über die Pendelleitung 12 auf den Arbeitsraum 18 des Hauptpumpenkopfes 11 wirkt. Der Druck bewirkt ein Schließen des Rückschlagventils 16 und ein Öffnen des Druckventils 17, so dass Förderflüssigkeit 21 in die druckseitige Förderleitung 5 gepumpt wird. Durch oszillierende Bewegung des Kolbens 28 erfolgt auf diese Weise eine kontinuierliche Förderung.If the piston 28 is extended, this causes a flattening of the membrane 26 and a negative pressure in the working chamber 20 of the diaphragm pump 10. The negative pressure acts via the shuttle 12 in the working space 18 of the main pump head, so that the check valve 16 opens and delivery fluid from the suction side of the delivery line 15th is sucked. In the following opposite stroke of the piston 28 pressure 26 is generated in the working space 20 of the diaphragm pump 10 when bulging the membrane, which acts on the working space 18 of the main pump head 11 via the pendulum line 12. The pressure causes a closing of the check valve 16 and an opening of the pressure valve 17, so that delivery fluid 21 is pumped into the pressure-side delivery line 5. By oscillating movement of the piston 28 takes place in this way a continuous promotion.

Durch die gegensinnige Ansteuerung zweier Hauptpumpenköpfe 11 mittels doppelt wirkendem Pulsator 10, der vorzugsweise in Membranbauart ausgeführt ist, überlagern sich die Pump- und Saugvorgänge mit den zwei Kreisen A und B derart, dass insbesondere bei Rezirkulationsprozessen mit hohem Systemdruck und relativ niedrigem Differenzdruck zwischen Saug- und Druckleitung nur eine geringe Leistung für den antreibenden Motor erforderlich ist. Alternativ kann jeder Hauptpumpenkopf 11 mit einem einfach wirkenden Pulsator gleich- oder gegensinnig angesteuert werden.By opposing control of two main pump heads 11 by means of double-acting pulsator 10, which is preferably designed in membrane design, the pumping and suction processes with the two circles A and B overlap such that, in particular in recirculation processes with high system pressure and relatively low differential pressure between suction and pressure line only a small power for the driving motor is required. Alternatively, each main pump head 11 with a single-acting pulsator equal or opposite directions can be controlled.

In Figur 3 ist als Einzelheit eines zweiten Ausführungsbeispiels ein Abschnitt einer Pendelleitung 12' veranschaulicht. Zur Trennung der Flüssigkeitssäule in der Pendelleitung 12' ist ein gemäß Doppelpfeil 34 längsverschiebbar gelagerter Trennkolben 32 in der Pendelleitung 12' angeordnet. Eventuell vorhandene Feststoffteilchen 24 verbleiben dadurch in einem Bereich 32 auf Seiten des Hauptpumpenkopfes 11 und können nicht in einen Bereich 33 auf Seiten der Membranpumpe gelangen.In FIG. 3 is shown as a detail of a second embodiment, a portion of a pendulum line 12 '. In order to separate the liquid column in the transfer line 12 ', a separating piston 32 mounted longitudinally displaceably according to a double arrow 34 is arranged in the transfer line 12'. Any existing solid particles 24 thereby remain in a region 32 on the side of the main pump head 11 and can not reach a region 33 on the side of the diaphragm pump.

Claims (11)

Pumpenvorrichtung mit einem Pulsator als Antriebselement für einen Hauptpumpenkopf (11), der in einer Förderleitung (15) liegt und dessen Arbeitsraum (18) saugseitig mit einem Rückschlagventil (16) und druckseitig mit einem Druckventil (17) versehen ist,
dadurch gekennzeichnet, dass der Arbeitsraum (20) des Pulsators über eine mit Fördermedium (21) gefüllte Pendelleitung (12) unmittelbar mit dem Arbeitsraum (18) des Hauptpumpenkopfes (11) in der Weise in Verbindung steht, dass der Pulsator oszillierend Fördermedium (21) aus der Förderleitung (15) in den Arbeitsraum (18) des Hauptpumpenkopfes (11) ansaugt oder aus dem Arbeitsraum (18) drückt, und
dass der Arbeitsraum (20) des Pulsators über ein Entlüftungsventil (9) mit der Saugseite der Förderleitung (15) verbunden ist.Pump device with a pulsator as a drive element for a main pump head (11), which lies in a delivery line (15) and whose working space (18) is provided on the suction side with a check valve (16) and on the pressure side with a pressure valve (17),
characterized in that the working chamber (20) of the pulsator via a pumped with conveying medium (21) shuttle line (12) directly to the working space (18) of the main pump head (11) in such a way that the pulsator oscillating conveying medium (21) from the delivery line (15) in the working space (18) of the main pump head (11) sucks or pushes out of the working space (18), and
the working chamber (20) of the pulsator is connected to the suction side of the delivery line (15) via a venting valve (9). Pumpenvorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
dass die Saugseite der Förderleitung (15) zur selbsttätigen Entlüftung oberhalb des Entlüftungsventils (9) angeordnet ist.Pumping device according to claim 1,
characterized,
that the suction side of the conveying line (15) for automatic venting above the vent valve (9) is arranged. Pumpenvorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
dass das Entlüftungsventil (9) in Verbindung mit einer Rückführungspumpe zwangsgesteuert, insbesondere zeitlich gesteuert, ist.Pumping device according to claim 1,
characterized,
in that the venting valve (9) is positively controlled, in particular time-controlled, in connection with a return pump. Pumpenvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass die Pendelleitung (12) mit einer Kühlung versehen ist.Pumping device according to one of the preceding claims,
characterized,
that the pendulum line (12) is provided with a cooling. Pumpenvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass die Pendelleitung (12) vom Pulsator zum Hauptpumpenkopf (11) hin fallend ausgerichtet ist.Pumping device according to one of the preceding claims,
characterized,
that the transfer line (12) from the pulsator to the main pump head (11) toward decreasing aligned. Pumpenvorrichtung nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet,
dass die Pendelleitung (12) mit einer Senke (25) als Aufnahmeraum für Feststoffteilchen (24) im Fördermedium (21) versehen ist.Pumping device according to one of claims 1 to 4,
characterized,
that the transfer line (12) having a depression (25) as a receiving space for solid particles (24) in the medium (21) is provided. Pumpenvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass der Arbeitsraum (20) des Pulsators mit einem Ausgleichsmedium zum Ausgleich von Leckageschwund beaufschlagt ist.Pumping device according to one of the preceding claims,
characterized,
that the working chamber (20) of the pulsator is supplied with a compensation medium for compensating for leakage fade. Pumpenvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass in der Pendelleitung (12') ein Trennkolben (32) angeordnet ist.Pumping device according to one of the preceding claims,
characterized,
that in the pendulum line (12 '), a separating piston (32) is arranged. Pumpenvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass sie mit einem doppelt wirkenden Pulsator und zwei gegensinnig angesteuerten Pumpenkreisen (A, B) ausgebildet ist.Pumping device according to one of the preceding claims,
characterized,
that it is formed with a double-acting pulsator and two oppositely controlled pump circuits (A, B). Pumpenvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass der Pulsator in Membran- oder Schlauchmembranbauweise ausgeführt ist.Pumping device according to one of the preceding claims,
characterized,
that the pulsator is designed in membrane or tubular membrane design. Pumpenvorrichtung nach einem der vorhergehenden Ansprüche 1 bis 9,
dadurch gekennzeichnet,
dass der Pulsator in Kolben- oder Plungerbauweise ausgeführt ist.Pumping device according to one of the preceding claims 1 to 9,
characterized,
that the pulsator is designed in piston or plunger construction.
EP08014528.7A 2008-08-14 2008-08-14 Pumping device Active EP2154371B1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
EP08014528.7A EP2154371B1 (en) 2008-08-14 2008-08-14 Pumping device
DK200800165U DK200800165U3 (en) 2008-08-14 2008-08-27 pumping device
US13/058,904 US20110135514A1 (en) 2008-08-14 2009-08-14 Pump Device
ES09777900T ES2773043T3 (en) 2008-08-14 2009-08-14 Pump device
EP09777900.3A EP2329147B1 (en) 2008-08-14 2009-08-14 Pumping device
PCT/EP2009/005928 WO2010017997A2 (en) 2008-08-14 2009-08-14 Pump device
BRPI0917663A BRPI0917663A2 (en) 2008-08-14 2009-08-14 pump device
PL09777900T PL2329147T3 (en) 2008-08-14 2009-08-14 Pumping device
CN200980131732.1A CN102124226B (en) 2008-08-14 2009-08-14 Pump device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08014528.7A EP2154371B1 (en) 2008-08-14 2008-08-14 Pumping device

Publications (2)

Publication Number Publication Date
EP2154371A1 true EP2154371A1 (en) 2010-02-17
EP2154371B1 EP2154371B1 (en) 2018-09-19

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EP09777900.3A Active EP2329147B1 (en) 2008-08-14 2009-08-14 Pumping device

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EP (2) EP2154371B1 (en)
CN (1) CN102124226B (en)
BR (1) BRPI0917663A2 (en)
DK (1) DK200800165U3 (en)
ES (1) ES2773043T3 (en)
PL (1) PL2329147T3 (en)
WO (1) WO2010017997A2 (en)

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WO2013045598A3 (en) * 2011-09-30 2013-05-30 Aker Wirth Gmbh Positive displacement pump and operating method thereof
WO2013135681A1 (en) * 2012-03-13 2013-09-19 Prominent Dosiertechnik Gmbh Displacement pump with forced venting
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KR101374048B1 (en) * 2012-06-14 2014-03-13 한국과학기술연구원 Fluid pumping device, fuel cell device and fuel gas recirculation method using the same
EP3167029A1 (en) * 2014-07-11 2017-05-17 JOHANNSEN, Ib A method and apparatus for producing biofuel in an oscillating flow production line under supercritical fluid conditions
DE102016015110A1 (en) * 2016-12-20 2018-06-21 Fresenius Medical Care Deutschland Gmbh Positive displacement pump for medical fluids and blood treatment device with a positive displacement pump for medical fluids and method for controlling a positive displacement pump for medical fluids

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Also Published As

Publication number Publication date
CN102124226A (en) 2011-07-13
DK200800165U3 (en) 2009-12-11
EP2329147A2 (en) 2011-06-08
WO2010017997A3 (en) 2010-04-08
CN102124226B (en) 2014-09-17
WO2010017997A2 (en) 2010-02-18
PL2329147T3 (en) 2020-06-29
ES2773043T3 (en) 2020-07-09
BRPI0917663A2 (en) 2015-12-01
EP2329147B1 (en) 2019-12-18
EP2154371B1 (en) 2018-09-19
US20110135514A1 (en) 2011-06-09

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