EP1384895B1 - Venting system for submersible pump - Google Patents

Venting system for submersible pump Download PDF

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Publication number
EP1384895B1
EP1384895B1 EP03014788A EP03014788A EP1384895B1 EP 1384895 B1 EP1384895 B1 EP 1384895B1 EP 03014788 A EP03014788 A EP 03014788A EP 03014788 A EP03014788 A EP 03014788A EP 1384895 B1 EP1384895 B1 EP 1384895B1
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EP
European Patent Office
Prior art keywords
pump
bore
bend
submersible pump
liquid
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
EP03014788A
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German (de)
French (fr)
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EP1384895A2 (en
EP1384895A3 (en
Inventor
Walter Lohse
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KSB AG
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KSB AG
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Publication of EP1384895A2 publication Critical patent/EP1384895A2/en
Publication of EP1384895A3 publication Critical patent/EP1384895A3/en
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Publication of EP1384895B1 publication Critical patent/EP1384895B1/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
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/605—Mounting; Assembling; Disassembling specially adapted for liquid pumps
    • F04D29/606—Mounting in cavities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/001—Preventing vapour lock

Definitions

  • the invention relates to a device for maintaining the absorbency of a arranged in a pump sump, by means of a bracket screwless attached to a predominantlykrümmer submersible pump.
  • a backflow preventer is arranged in the form of a check valve or a valve.
  • a return flow of the pumped medium in the normal case, ie, when submerged suction of the submersible pump prevented. If, however, the fluid level is lowered below the level of the suction port for procedural reasons or because of errors in the control or level measurement, this leads to the fluid in the delivery line draining via the submersible pump and the delivery line filling with air. A restart of the submersible pump is then no longer readily possible because the air has not penetrated into the pump and thus prevents the liquid from getting to the impeller of the pump. This means that the impeller is now unable to suck liquid. Remedy is created in a known manner, that the submersible pump pulled to vent or the delivery line is vented.
  • the invention has for its object to provide a device of the type mentioned, in which the preservation of the absorbency can be achieved without a to be carried out on the housing of the submersible pump and retrofitted with little effort measure.
  • the holder of the submersible pump is provided with an upwardly leading vent line, which is equipped with a the ingress of liquid from the pump sump in the submersible pump preventing check member.
  • This solution can be realized very easily. It may consist in that in the holder an upwardly directed bore is arranged, in which a floating closure body sealingly cooperates with a seat formed by a taper of the bore.
  • a preferred embodiment of the invention has for this purpose an upwardly tapered bore in which a spherical or conical closure body is arranged.
  • the holder is equipped with an upwardly directed bore and an adjoining pipe, which merges into a manifold with a downward opening, wherein the opening is to be closed by a floating closure body.
  • the floating closure body is formed by a flap attached to the manifold movably, which is pressed by the rising in the pump sump liquid against the opening of the manifold.
  • a submersible pump 1 is lowered by means of a chain attached to its top 2 in a - not shown here - pump sump and pulled out of this.
  • the guide of the submersible pump 1 is carried out with the help of two wire ropes 3, which are enclosed by a serving as a holder 4 part.
  • the holder 4 slides on the wire cables 3, which surrounds them.
  • the holder 4 has one or two jaws 5, which detect the back of a flange 6 on a pipe bend 7 in the last part of the lowering process, in order then to come to this back for fixed abutment.
  • This system also has the consequence that a surface located on the holder 4 comes to the front of the flange 6 for sealing engagement.
  • the liquid in the delivery line drains via the pipe bend 7 and the inlet 8.
  • the vent line 9 is formed by a conical bore.
  • a floating ball 10 is arranged, which sinks when the liquid flows out and thus opens a path through which the air in the housing of the submersible pump 1 can flow out when the liquid level rises. If the liquid level continues to rise, it presses the ball 10 onto its seat formed in the venting line 9. The venting line 9 is now closed; a transfer of liquid from the pump interior in the pump sump is prevented.
  • a vent line 9 available in the execution of the Fig. 2 is in the holder 4 also a vent line 9 available.
  • a manifold 11 which has a downward opening.
  • a hinged flap 12 is arranged around a hinge or a suspension made of a flexible material.
  • the flap 12 is moved by its own weight down, whereby the hitherto closed opening of the flap 12 is released.
  • the vent line 9 is at a below the height of the Closure body sloping liquid level open.
  • the flap 12 is floating, so that it is closed again at a level above its level liquid level.
  • vent line check member does not necessarily have to be equipped with a floating closure body.
  • valves are used, which open at a discharge from the pressure of the liquid in the pump sump, thus releasing a vent line.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

Gegenstand der Erfindung ist eine Einrichtung zur Erhaltung der Saugfähigkeit einer in einem Pumpensumpf angeordneten, mittels einer Halterung schraubenlos an einem Fußkrümmer befestigten Tauchmotorpumpe.The invention relates to a device for maintaining the absorbency of a arranged in a pump sump, by means of a bracket screwless attached to a Fußkrümmer submersible pump.

Es ist allgemein üblich, siehe z.B. DE 297 10 766 U , Tauchmotorpumpen mit Hilfe einer Klaue oder einer ähnlichen Halterung an einem Fußkrümmer anzuordnen, welcher den Einlaß für eine aus dem Pumpensumpf nach oben führenden Förderleitung bildet. Die Halterung setzt auf den oberen Bereich des Fußkrümmers auf, wodurch die exzentrisch zur Halterung angebrachte Tauchmotorpumpe aufgrund ihres Eigengewichtes dichtend gegen den Flansch des Fußkrümmers gedrückt wird.It is common practice, see eg DE 297 10 766 U To arrange submersible pumps by means of a claw or similar support on a Fußkrümmer, which forms the inlet for a pumping sump leading up the delivery line. The bracket is placed on the upper portion of the Fußkümmers, whereby the eccentric mounted to the mounting submersible pump is pressed sealingly against the flange of the Fußchümmers due to its own weight.

In der der Tauchmotorpumpe nachgeschalteten Förderleitung ist ein Rückflußverhinderer in Form einer Rückschlagklappe oder eines -ventiles angeordnet. Hierdurch wird ein Rückströmen des Fördermediums im Normalfall, d.h. bei eingetauchtem Saugmund der Tauchmotorpumpe, verhindert. Wird allerdings der Flüssigkeitsspiegel aus verfahrenstechnischen Gründen oder wegen Fehlern in der Steuerung oder der Füllstandsmessung unter das Niveau des Saugmundes abgesenkt, so führt dies dazu, daß die in der Förderleitung befindliche Flüssigkeit über die Tauchmotorpumpe abläuft und die Förderleitung sich mit Luft füllt. Ein Wiederanfahren der Tauchmotorpumpe ist dann nicht mehr ohne weiteres möglich, weil die in die Pumpe eingedrungene Luft nicht zu entweichen vermag und so die Flüssigkeit daran hindert, zu dem Laufrad der Pumpe zu gelangen. Dies bedeutet, daß das Laufrad nun keine Flüssigkeit anzusaugen vermag. Abhilfe wird in bekannter Weise dadurch geschaffen, daß die Tauchmotorpumpe zum Entlüften gezogen oder die Förderleitung entlüftet wird.In the submersible pump downstream delivery line a backflow preventer is arranged in the form of a check valve or a valve. As a result, a return flow of the pumped medium in the normal case, ie, when submerged suction of the submersible pump prevented. If, however, the fluid level is lowered below the level of the suction port for procedural reasons or because of errors in the control or level measurement, this leads to the fluid in the delivery line draining via the submersible pump and the delivery line filling with air. A restart of the submersible pump is then no longer readily possible because the air has not penetrated into the pump and thus prevents the liquid from getting to the impeller of the pump. This means that the impeller is now unable to suck liquid. Remedy is created in a known manner, that the submersible pump pulled to vent or the delivery line is vented.

Bei Kraftstoffpumpen, die in einem Behälter angeordnet sind, ist es bekannt, an der höchsten Stelle des von dem Kraftstoff durchströmten Gehäuses ein Rückschlagventil anzuordnen, über das in der Pumpe vorhandenes Gas beim Anlaufen der Pumpe abgeführt wird. Die DE 196 18 452 A1 und die US 6 203 286 B1 sind Beispiele hierfür. Durch die 81 24 528 U1 ist eine Kreiseltauchpumpe für gasbeladene Flüssigkeiten bekannt, bei der der Pumpenraum über eine oder mehrere einstellbare Öffnungen mit dem Umgebungsraum der Pumpe verbunden ist.In fuel pumps, which are arranged in a container, it is known to arrange a check valve at the highest point of the housing through which the fuel flows, via which gas present in the pump is discharged when the pump starts up. The DE 196 18 452 A1 and the US Pat. No. 6,203,286 B1 are examples of this. The 81 24 528 U1 a centrifugal submersible pump for gas-laden liquids is known in which the pump chamber is connected via one or more adjustable openings with the surrounding space of the pump.

Der Erfindung liegt die Aufgabe zugrunde, eine Einrichtung der eingangs genannten Art zu schaffen, bei der die Erhaltung der Saugfähigkeit ohne eine am Gehäuse der Tauchmotorpumpe vorzunehmende und mit geringem Aufwand nachzurüstende Maßnahme zu erreichen ist.The invention has for its object to provide a device of the type mentioned, in which the preservation of the absorbency can be achieved without a to be carried out on the housing of the submersible pump and retrofitted with little effort measure.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Halterung der Tauchmotorpumpe mit einer nach oben führenden Entlüftungsleitung versehen ist, welche mit einem den Zutritt von Flüssigkeit aus dem Pumpensumpf in die Tauchmotorpumpe verhindernden Rückschlagorgan ausgestattet ist.This object is achieved in that the holder of the submersible pump is provided with an upwardly leading vent line, which is equipped with a the ingress of liquid from the pump sump in the submersible pump preventing check member.

Diese Lösung läßt sich sehr einfach verwirklichen. Sie kann darin bestehen, daß in der Halterung eine nach oben gerichtete Bohrung angeordnet ist, in welcher ein aufschwimmender Verschlußkörper mit einem durch eine Verjüngung der Bohrung gebildeten Sitz dichtend zusammenwirkt.This solution can be realized very easily. It may consist in that in the holder an upwardly directed bore is arranged, in which a floating closure body sealingly cooperates with a seat formed by a taper of the bore.

Eine bevorzugte Ausführung der Erfindung besitzt zu diesem Zweck eine sich nach oben konisch verjüngende Bohrung, in welcher ein kugel- oder kegelförmiger Verschlußkörper angeordnet ist.A preferred embodiment of the invention has for this purpose an upwardly tapered bore in which a spherical or conical closure body is arranged.

Eine weitere Möglichkeit zur Verwirklichung der Erfindung liegt darin, daß die Halterung ausgestattet ist mit einer nach oben gerichteten Bohrung und einer daran anschließenden Rohrleitung, die in einen Krümmer mit einer nach unten gerichteten Öffnung übergeht, wobei die Öffnung durch einen aufschwimmenden Verschlußkörper zu verschließen ist. In zweckmäßiger Ausgestaltung wird der aufschwimmende Verschlußkörper durch eine beweglich an dem Krümmer befestigte Klappe gebildet, welche durch die im Pumpensumpf ansteigende Flüssigkeit gegen die Öffnung des Krümmers gedrückt wird.Another way to achieve the invention is that the holder is equipped with an upwardly directed bore and an adjoining pipe, which merges into a manifold with a downward opening, wherein the opening is to be closed by a floating closure body. In an advantageous embodiment of the floating closure body is formed by a flap attached to the manifold movably, which is pressed by the rising in the pump sump liquid against the opening of the manifold.

Anhand zweier Ausführungsbeispiele wird die Erfindung näher erläutert. Es zeigt

Fig. 1
eine Tauchmotorpumpe mit einer erfindungsgemäß ausgestatteten Halterung, bei der eine Zwangsentlüftung über eine integrierte Bohrung erfolgt;
Fig. 2
eine Variante der erfindungsgemäßen Einrichtung, bei der eine Entlüftung über ein auf der Halterung angeordnetes Rohr erfolgt.
Based on two embodiments, the invention will be explained in more detail. It shows
Fig. 1
a submersible pump with a holder equipped according to the invention, in which a forced venting takes place via an integrated bore;
Fig. 2
a variant of the device according to the invention, in which a venting takes place via a pipe arranged on the holder.

Den in den Fig. 1 und 2 dargestellten Ausführungen sind folgende Merkmale gemeinsam:The in the Fig. 1 and 2 the following features are common:

Eine Tauchmotorpumpe 1 ist mit Hilfe einer an ihrer Oberseite befestigten Kette 2 in einen - hier nicht dargestellten - Pumpensumpf absenkbar und aus diesem ziehbar. Der Führung der Tauchmotorpumpe 1 erfolgt mit Hilfe zweier Drahtseile 3, die von einem im übrigen als Halterung 4 dienenden Teil umschlossen werden. Während des Absenkens gleitet die Halterung 4 auf den Drahtseilen 3, die sie umschließt. Die Halterung 4 besitzt eine oder zwei Klauen 5, die im letzten Teil des Absenkvorganges die Rückseite eines Flansch 6 an einem Rohrkrümmer 7 erfassen, um dann an dieser Rückseite zur festen Anlage zu kommen. Diese Anlage hat im übrigen zur Folge, daß eine an der Halterung 4 befindliche Fläche an der Vorderseite des Flansches 6 zur dichtenden Anlage kommt.A submersible pump 1 is lowered by means of a chain attached to its top 2 in a - not shown here - pump sump and pulled out of this. The guide of the submersible pump 1 is carried out with the help of two wire ropes 3, which are enclosed by a serving as a holder 4 part. During the lowering, the holder 4 slides on the wire cables 3, which surrounds them. The holder 4 has one or two jaws 5, which detect the back of a flange 6 on a pipe bend 7 in the last part of the lowering process, in order then to come to this back for fixed abutment. This system also has the consequence that a surface located on the holder 4 comes to the front of the flange 6 for sealing engagement.

Nach dem Start der mit einem Elektromotor ausgestatteten Tauchmotorpumpe 1 saugt diese über einen Einlaß 8 Flüssigkeit aus dem die Pumpe 1 umgebenden Sumpf an und fördert diese über den Rohrkrümmer 7 in eine - nicht dargestellte - Förderleitung.After starting the equipped with an electric motor submersible pump 1 sucks this via an inlet 8 liquid from the sump surrounding the pump 1 and promotes this via the pipe bend 7 in a - not shown - delivery line.

Sollte der Flüssigkeitsspiegel im Pumpensumpf auf ein unterhalb des Einlasses 8 gelegenes Niveau fallen, läuft die in der Förderleitung befindliche Flüssigkeit über den Rohrkrümmer 7 und den Einlaß 8 ab.If the liquid level in the pump sump falls to a level below the inlet 8, the liquid in the delivery line drains via the pipe bend 7 and the inlet 8.

Wenn keine Einrichtung zur Erhaltung der Saugfähigkeit der Tauchmotorpumpe 1 vorhanden ist, wird selbst bei einem während des Stillstandes der Pumpe 1 ansteigenden Flüssigkeitsspiegel im Pumpensumpf auf ein oberhalb des Einlasses 8 gelegenes Niveau eine Flüssigkeitsförderung beim Neustart der Tauchmotorpumpe 1 verhindert. Hierfür ist die nach dem Flüssigkeitsablauf in die Pumpe 1 und die Förderleitung einströmende Luft verantwortlich. Diese Luft umschließt auch das Laufrad der Pumpe 1; was dazu führt, daß das Laufrad keine Flüssigkeit anzusaugen vermag. Um die Förderung wieder einzuleiten, müßte entweder die Tauchmotorpumpe 1 gezogen und so ein Entlüften der Pumpe 1 bewirkt oder es müßte die Förderleitung entlüftet werden.When there is no means for maintaining the absorbency of the submersible pump 1, even if the level of liquid in the sump is lowered to a level above the inlet 8, a liquid delivery upon restart of the submersible pump 1 is prevented. For this purpose, the air flowing into the pump 1 and the delivery line is responsible for the flow of air. This air also encloses the impeller of the pump 1; which causes the impeller is not able to suck liquid. In order to restart the promotion, either the submersible motor pump 1 would have to be pulled and thus a venting of the pump 1 causes or it would be necessary to vent the delivery line.

Mit den in den Fig. 1 und 2 dargestellten Einrichtungen wird ein solcher Aufwand vermieden. Vielmehr wird eine selbsttätige Entlüftung der Tauchmotorpumpe 1 dadurch bewirkt, daß in den Halterungen 4 Entlüftungsleitungen vorhanden sind, die bei einem wieder ansteigenden Flüssigkeitsspiegel ein Entweichen der im Pumpenraum vorhandenen Luft zulassen.With the in the Fig. 1 and 2 shown facilities such an effort is avoided. Rather, an automatic venting of the submersible pump 1 is effected in that 4 vent lines are present in the brackets, which allow escape of the existing air in the pump chamber at a rising again liquid level.

Bei der Ausführung der Fig. 1 wird die Entlüftungsleitung 9 durch eine konisch verlaufende Bohrung gebildet. In der Entlüftungsleitung 9 ist eine aufschwimmende Kugel 10 angeordnet, die bei ablaufender Flüssigkeit absinkt und somit einen Weg öffnet, über den bei einem Ansteigen des Flüssigkeitsspiegels die im Gehäuse der Tauchmotorpumpe 1 befindliche Luft ausströmen kann. Steigt der Flüssigkeitsspiegel weiter an, so drückt er die Kugel 10 auf ihren in der Entlüftungsleitung 9 gebildeten Sitz. Die Entlüftungsleitung 9 ist nun verschlossen; ein Übertritt von Flüssigkeit aus dem Pumpeninneren in Pumpensumpf wird verhindert.In the execution of the Fig. 1 the vent line 9 is formed by a conical bore. In the vent line 9, a floating ball 10 is arranged, which sinks when the liquid flows out and thus opens a path through which the air in the housing of the submersible pump 1 can flow out when the liquid level rises. If the liquid level continues to rise, it presses the ball 10 onto its seat formed in the venting line 9. The venting line 9 is now closed; a transfer of liquid from the pump interior in the pump sump is prevented.

Bei der Ausführung der Fig. 2 ist in der Halterung 4 ebenfalls eine Entlüftungsleitung 9 vorhanden. Diese geht aber hier in einen Krümmer 11 über, der eine nach unten gerichtete Öffnung besitzt. Vor dieser Öffnung ist eine um ein Scharnier oder eine aus einem flexiblen Werkstoff bestehende Aufhängung schwenkbare Klappe 12 angeordnet. Bei einem unter ihr Niveau abfallenden Flüssigkeitstand wird die Klappe 12 durch ihr Eigengewicht nach unten bewegt, wodurch die bis dahin verschlossene Öffnung von der Klappe 12 freigegeben wird. Somit wird auch hier die Entlüftungsleitung 9 bei einem unter die Höhe des Verschlußkörpers abfallenden Flüssigkeitsspiegel geöffnet. Die Klappe 12 ist aufschwimmend, so daß sie bei einem über ihr Niveau ansteigenden Flüssigkeitstand wieder geschlossen wird.In the execution of the Fig. 2 is in the holder 4 also a vent line 9 available. However, this goes here in a manifold 11, which has a downward opening. In front of this opening, a hinged flap 12 is arranged around a hinge or a suspension made of a flexible material. At a level below their level of fluid level, the flap 12 is moved by its own weight down, whereby the hitherto closed opening of the flap 12 is released. Thus, the vent line 9 is at a below the height of the Closure body sloping liquid level open. The flap 12 is floating, so that it is closed again at a level above its level liquid level.

Das in der Entlüftungsleitung angeordnete Rückschlagorgan muß nicht zwangsläufig mit einem aufschwimmenden Verschlußkörper ausgestattet sein. Selbstverständlich sind auch solche Ventile einsetzbar, die bei einer Entlastung vom Druck der Flüssigkeit im Pumpensumpf öffnen und so eine Entlüftungsleitung freigeben.The arranged in the vent line check member does not necessarily have to be equipped with a floating closure body. Of course, such valves are used, which open at a discharge from the pressure of the liquid in the pump sump, thus releasing a vent line.

Claims (5)

  1. Device for maintaining the suction capacity of a submersible motor-driven pump (1) arranged in a pump sump and fastened screwlessly to a foot bend (7) by means of a holding arrangement (4), characterized in that the holding arrangement (4) is provided with a venting line (9) which leads upwards and which is equipped with a non-return member (10, 12) preventing the ingress of liquid from the pump sump into the submersible motor-driven pump (1).
  2. Device according to Claim 1, characterized in that the holding arrangement (4) has arranged in it an upwardly directed bore in which a floating closing body (10) cooperates sealingly with a seat formed by a taper of the bore.
  3. Device according to Claim 2, characterized by a bore which tapers conically upwards and in which a spherical or conical closing body (10) is arranged.
  4. Device according to Claim 1, characterized in that the holding arrangement (4) is equipped with an upwardly directed bore and with a pipeline which adjoins the latter and which merges into a bend (11) having a downwardly directed orifice, the orifice being closable by means of a floating closing body (12).
  5. Device according to Claim 4, characterized in that the floating closing bodies formed by a flap (12) which is fastened moveably to the bend (11) and which is pressed against the orifice of the bend (11) by the liquid rising in the pump sump.
EP03014788A 2002-07-23 2003-06-28 Venting system for submersible pump Expired - Lifetime EP1384895B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10233281A DE10233281A1 (en) 2002-07-23 2002-07-23 Device for maintaining the absorbency of a submersible pump
DE10233281 2002-07-23

Publications (3)

Publication Number Publication Date
EP1384895A2 EP1384895A2 (en) 2004-01-28
EP1384895A3 EP1384895A3 (en) 2005-11-30
EP1384895B1 true EP1384895B1 (en) 2011-05-04

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ID=29796507

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03014788A Expired - Lifetime EP1384895B1 (en) 2002-07-23 2003-06-28 Venting system for submersible pump

Country Status (2)

Country Link
EP (1) EP1384895B1 (en)
DE (2) DE10233281A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012102088A1 (en) 2012-03-13 2013-09-19 Prominent Dosiertechnik Gmbh Positive displacement pump with forced ventilation

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1930676U (en) * 1963-12-20 1966-01-05 Klein Schanzlin & Bekker Ag DEVICE FOR SELF-EMPTYING THE PRESSURE LINE OF A CENTRIFUGAL PUMP.
FR2361558A1 (en) * 1976-08-13 1978-03-10 Saint Gobain Techn Nouvelles SELF-PRIMING CENTRIFUGAL PUMPS IMPROVEMENTS
DE8124528U1 (en) * 1981-08-21 1982-03-18 Franz Eisele & Söhne GmbH & Co KG, 7481 Sigmaringen CENTRIFUGAL SUBMERSIBLE PUMP
SE442324B (en) * 1984-05-08 1985-12-16 Flygt Ab DEVICE FOR PREVENTING FLOW OF FLUID FROM A PRESSURE PIPE THROUGH A PUMP
DE4434461A1 (en) * 1994-09-27 1996-03-28 Klein Schanzlin & Becker Ag Submersible pump for coarsely contaminated liquids
DE19610697A1 (en) * 1996-03-19 1997-09-25 Abs Pumps Ltd Foot piece
DE19618452B4 (en) * 1996-05-08 2005-05-12 Robert Bosch Gmbh Aggregate for conveying fuel from a storage tank to an internal combustion engine
DE29710766U1 (en) * 1997-06-20 1997-08-21 KVM-Wasser- und Abwassersysteme GmbH, 32602 Vlotho Foot that can be fixed on the bottom of a pump shaft
DE19901032A1 (en) * 1999-01-14 2000-07-20 Pierburg Ag Electric fuel pump

Also Published As

Publication number Publication date
EP1384895A2 (en) 2004-01-28
DE10233281A1 (en) 2004-02-05
DE50313660D1 (en) 2011-06-16
EP1384895A3 (en) 2005-11-30

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