EP0979950B1 - Centrifugal pump with check-valve - Google Patents
Centrifugal pump with check-valve Download PDFInfo
- Publication number
- EP0979950B1 EP0979950B1 EP99112425A EP99112425A EP0979950B1 EP 0979950 B1 EP0979950 B1 EP 0979950B1 EP 99112425 A EP99112425 A EP 99112425A EP 99112425 A EP99112425 A EP 99112425A EP 0979950 B1 EP0979950 B1 EP 0979950B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- adapter
- centrifugal pump
- pump according
- seat
- connecting flange
- 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
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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
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0077—Safety measures
- F04D15/0083—Protection against sudden pressure change, e.g. check valves
-
- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/406—Casings; Connections of working fluid especially adapted for liquid pumps
Definitions
- the invention relates to a centrifugal pump with a suction and a pressure port, each on a connecting flange a pipe can be connected.
- centrifugal pumps are known in a variety of forms, e.g. US-A-5,480,289 and are used, for example, in heating circuits.
- to Installation of the pump has cut out a piece of the pipeline, into which the pump with its nozzle in line is used.
- the distance between the pipe flanges corresponds to the standardized distance of the connecting piece, so that the pump can be replaced at will.
- This is on Pump connector the corresponding counter flange for Pipe flange molded, the type and size of the Pipe flanges by the type and size of the flanges Pump nozzle is fixed. Because the relevant standards are not internationally recognized, it is necessary for other countries to provide different pump housings. An easy one Exchange is not possible.
- the object of the present invention is therefore a pump to create that with easy handling and construction the possibility of integration in different dimensions Pipe socket offers.
- a particular advantage of the pump is that it is characterized by the interchangeable adapter easily and conveniently to any Circuits can be adjusted. So it doesn't need for other systems the whole pump housing can be dimensioned differently, it is only necessary to provide an appropriate adapter that is inserted into the recess formed on the pump and on the one hand against admission and on the other hand against Seals the connection flange on the pipe system. Because the adapter over protrudes beyond the edge of the recording, it alone forms that Counterpart to the pipe flange.
- the adapter has the Possibility of integrating other hydraulic components offers in the fluid circuit. So one can with the Pump inventive hydraulic system simple and inexpensive way modular by others Components are added without changes to the connection options given by standard dimensions Pipelines must be made.
- the invention Pump especially centrifugal pump, serves as a module carrier and inevitably forms with one or both Trim a receptacle for the one with the desired component equipped adapter.
- the nozzle can be designed in this way be that several components in sandwich-like stacking be put together.
- the adapter or the bracket forms the counterpart to the connecting flange according to the invention the pipeline.
- the bracket during installation offers some play in the axial direction with the eventual Pipeline tolerances can be compensated.
- the pump according to the invention can be handled as the previously known pumps. To do this, the adapter or Bracket against falling out by an externally accessible Screw secured. This screw forms at the same time a transport lock, so that the pump in the with the required adapter assembled state can.
- the design of the pump according to the invention can be based on different types. It is essential that one of the Stub is formed as a part of the connector on which the adapter can be attached in the axial direction. there seals the bracket directly or indirectly against that of the Socket formed receptacle and against the connecting flange. It is particularly useful to use one of the pump nozzles Form cup-shaped receptacle into which an annular Adapter or an annular bracket for the hydraulic Component can be inserted. The cup-shaped receptacle forms thereby a socket into which the adapter or the holder is insertable.
- a non-return valve is used in the pressure side bracket.
- This check valve serves the liquid column in the system as a gravity brake if the pump is not running.
- On such check valve is in contrast to known, in Heating water circuits integrated valves simply use and thus inexpensive to assemble and Maintenance.
- the Pressure port in the flow direction in front of the in the holder check valve used an additional shut-off valve arranged.
- the shut-off valve is advantageously so trained that it as well as the check valve as optional module in a corresponding recording of the Pressure port are used.
- the shut-off valve is in an advantageous embodiment by simple mechanical means can be operated from the outside.
- Another particular advantage of the invention is that it is now possible to modular in the pump housing use hydraulic components without the overall length of the Change pump.
- the seal remains with the Connection flanges of the pipeline guaranteed.
- Figure 1 is a pump in the form of a centrifugal motor pump 1 shown.
- the pump housing 2 forms a pump chamber 3, in which an impeller, not shown, coaxial with the axis 4 is mounted on a shaft.
- the wave is from one Electric motor 32 operated, which together with the shaft to the Flanged housing.
- the pump chamber 3 points to the a side facing away from the electric motor 32 has a coaxial inlet on, which is connected to the suction nozzle 6. Further points the pump chamber 3 has an outlet 7 which leads to the pressure port 8 leads ( Figure 2).
- Suction nozzle 6 and pressure nozzle 8 lie on a common one Axis (in-line) and are not on the connecting flange 13 shown pipeline connected.
- a shut-off valve with a rotatable flap 10 attached.
- Adjusting bolt 11 fastened, which is rotatable in the pump housing 2 are stored and by means of a housing 2 outstanding head 12 in the form of a hexagon from the outside can be moved.
- the two flaps are each of an annular shape Sealing sleeve 19 surrounded by plastic, which is coaxial in the The end of the nozzle lies in and can be pressed in from the outside.
- an annular metal insert 23 one that has a central area of the cylindrical Cuff outer jacket forms and a clearance fit to Has inside the socket.
- the annular metal insert 23 is thus on both ends and on the inside Flap 10 facing the plastic of the sealing sleeve 19 surround.
- the pressure port 8 is designed as a plug connection into which a Holder for an adapter used for hydraulic components 14 can be used.
- 8 is in the area of the pressure port a cup-shaped receptacle 15 on the pump housing 2 cast into which the bracket 14 with the hydraulic Component, in this case a check valve 16, is used.
- the adapter 14 projects beyond the outer edge 32 the recording.
- the check valve 16 is with its by a spring 17th against the valve seat acted valve flap 18 in one the annular housing 14 forming the valve housing Built in metal.
- the inserted annular holder 14 forms with its Connection flange 13 directed base 20 the right one Counterpart to the connecting flange 13.
- base 20 to seal against the connecting flange 13 is on the Base 20 a flat gasket 21 glued on.
- Sealing of the holder 14 with respect to the sealing collar 19 is this on the outer face with a molded Ring bead 25 provided on which the adapter 14 with the Base 22 rests sealingly.
- a sealing ring can be on the paragraph 31 of the receptacle 15 be inserted in a corresponding groove.
- the adapter or the holder 14 is axially in the receptacle 15 displaceable against paragraph 31 and in the radial direction held positively by the edge of the receptacle 15. in the unmounted state, the bracket 14 by a Edge of the receptacle 15 penetrating and into a blind hole 26th the wall 27 of the bracket 14 engaging screw 28 secured against falling out.
- the inside diameter of the Blind hole 26 is larger than the diameter of screw 28, to compensate for a certain tolerance.
- the Retaining rings 29 holes 30 in the same pitch as in the Connecting flange 13 introduced so that an attachment in the known type is possible by screws.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Description
Die Erfindung betrifft eine Kreiselpumpe mit einem Saug- und einem Druckstutzen, die an jeweils einen Anschlußflansch einer Rohrleitung anschließbar sind.The invention relates to a centrifugal pump with a suction and a pressure port, each on a connecting flange a pipe can be connected.
Solche Kreiselpumpen sind in vielfältiger Form bekannt z.B. US-A-5 480 289 und werden beispielsweise in Heizungskreisläufen eingesetzt. Zur Montage der Pumpe ist ein Stück der Rohrleitung ausgespart, in das die Pumpe mit ihren in Linie liegenden Stutzen eingesetzt wird. Der Abstand der Rohrleitungsflansche entspricht dem genormten Abstand der Anschlußstutzen, so daß die Pumpe bei Belieben ausgetauscht werden kann. Dazu ist am Pumpenstutzen der entsprechende Gegenflansch zum Rohrleitungsflansch angeformt, wobei die Art und Größe der Rohrleitungsflansche durch die Art und Größe der Flansche der Pumpenstutzen festgelegt ist. Da die entsprechenden Normen nicht international anerkannt sind, ist es notwendig, für andere Länder andere Pumpengehäuse vorzusehen. Ein einfacher Austausch ist nicht möglich.Such centrifugal pumps are known in a variety of forms, e.g. US-A-5,480,289 and are used, for example, in heating circuits. to Installation of the pump has cut out a piece of the pipeline, into which the pump with its nozzle in line is used. The distance between the pipe flanges corresponds to the standardized distance of the connecting piece, so that the pump can be replaced at will. This is on Pump connector the corresponding counter flange for Pipe flange molded, the type and size of the Pipe flanges by the type and size of the flanges Pump nozzle is fixed. Because the relevant standards are not internationally recognized, it is necessary for other countries to provide different pump housings. An easy one Exchange is not possible.
Außerdem ist es wegen des durch den genormten Abstand der Rohrleitungsflansche festgelegten Abstands der Stutzen problematisch, weitere der Pumpe zugeordnete hydraulische Komponenten, wie beispielsweise Kontrolleinrichtungen oder Ventile, in den Flüssigkeitskreislauf einzubringen, ohne vorher aufwendige Veränderungen an den Rohrleitungen oder an der Pumpe vorzunehmen. It is also because of the standardized distance of the Pipe flanges specified spacing of the nozzle problematic, further hydraulic associated with the pump Components, such as control devices or Valves to introduce into the fluid circuit without previously complex changes to the piping or the pump.
Aufgabe der vorliegenden Erfindung ist es daher, eine Pumpe zu schaffen, die bei einfacher Handhabung und Konstruktion die Möglichkeit der Integration in verschieden dimensionierte Rohrleitungsstutzen bietet.The object of the present invention is therefore a pump to create that with easy handling and construction the possibility of integration in different dimensions Pipe socket offers.
Diese Aufgabe wird durch eine Kreiselpumpe nach Anspruch 1 gelöst.This object is achieved by a centrifugal pump according to claim 1 solved.
Vorteilhafte Ausführungsformen der erfindungsgemäßen Pumpe sind in den Unteransprüchen aufgezeigt.Advantageous embodiments of the pump according to the invention are shown in the subclaims.
Besonderer Vorteil der Pumpe ist, daß sie sich durch den austauschbaren Adapter einfach und bequem an beliebige Kreisläufe anpassen läßt. So braucht für andere Systeme nicht das ganze Pumpengehäuse anders dimensioniert werden, es ist lediglich nötig einen entsprechenden Adapter vorzusehen, der in die an der Pumpe angeformte Aufnahme eingesetzt wird und der einerseits gegen die Aufnahme und andererseits gegen den Anschlußflansch am Rohrsystem abdichtet. Da der Adapter über den Rand der Aufnahme inausragt, bildet er allein das Gegenstück zum Rohrleitungsflansch.A particular advantage of the pump is that it is characterized by the interchangeable adapter easily and conveniently to any Circuits can be adjusted. So it doesn't need for other systems the whole pump housing can be dimensioned differently, it is only necessary to provide an appropriate adapter that is inserted into the recess formed on the pump and on the one hand against admission and on the other hand against Seals the connection flange on the pipe system. Because the adapter over protrudes beyond the edge of the recording, it alone forms that Counterpart to the pipe flange.
Ein großer Vorteil des Adapters ist außerdem, daß er die Möglichkeit der Integration anderer hydraulischer Komponenten in den Flüssigkeitskreislauf bietet. So kann ein mit der erfindungsgemäßen Pumpe bstücktes hydraulisches System auf einfache und kostengünstige Weise modular um weitere Komponenten ergänzt werden, ohne daß Veränderungen an den durch Standardmaße vorgegebenen Anschlußmöglichkeiten der Rohrleitungen vorgenommen werden müssen. Die erfindungsgemäße Pumpe, insbesondere Kreiselpumpe, dient dabei als Modulträger und bildet mit einem oder mit beiden zwangsläufig vorhandenen Stutzen eine Aufnahme für den mit der gewünschten Komponente bestückten Adapter. Dabei können die Stutzen so ausgebildet sein, daß mehrere Komponenten in sandwichartiger Stapelung zusammengenommen werden. Der Adapter, bzw. die Halterung bildet erfindungsgemäß das Gegenstück zu dem Anschlußflansch der Rohrleitung. Another great advantage of the adapter is that it has the Possibility of integrating other hydraulic components offers in the fluid circuit. So one can with the Pump inventive hydraulic system simple and inexpensive way modular by others Components are added without changes to the connection options given by standard dimensions Pipelines must be made. The invention Pump, especially centrifugal pump, serves as a module carrier and inevitably forms with one or both Trim a receptacle for the one with the desired component equipped adapter. The nozzle can be designed in this way be that several components in sandwich-like stacking be put together. The adapter or the bracket forms the counterpart to the connecting flange according to the invention the pipeline.
Vorteilhaft weiterhin ist, daß die Halterung beim Einbau ein gewisses Spiel in axialer Richtung bietet, mit dem eventuelle Toleranzen der Rohrleitungen ausgeglichen werden können. Beim Einbau läßt sich die erfindungsgemäße Pumpe so handhaben wie die bisher bekannten Pumpen. Dazu wird der Adapter, bzw. die Halterung gegen Herausfallen durch eine von außen zugängliche Schraube gesichert. Diese Schraube bildet damit gleichzeitig eine Transportsicherung, so daß die Pumpe in dem mit dem erforderlichen Adapter bestückten Zustand ausgeliefert werden kann.Another advantage is that the bracket during installation offers some play in the axial direction with the eventual Pipeline tolerances can be compensated. At the Installation, the pump according to the invention can be handled as the previously known pumps. To do this, the adapter or Bracket against falling out by an externally accessible Screw secured. This screw forms at the same time a transport lock, so that the pump in the with the required adapter assembled state can.
Die Ausbildung der erfindungsgemäßen Pumpe kann auf verschiedene Art erfolgen. Wesentlich ist, daß einer der Stutzen als ein Teil Steckverbindung ausgebildet ist, an dem der Adapter in axialer Richtung angesetzt werden kann. Dabei dichtet die Halterung direkt oder indirekt gegen die von dem Stutzen gebildete Aufnahme und gegen den Anschlußflansch ab. Besonders zweckmäßig ist es, einen der Pumpenstutzen als topfförmige Aufnahme auszubilden, in die ein ringförmiger Adapter oder eine ringförmige Halterung für die hydraulische Komponente einsteckbar ist. Die topfförmige Aufnahme bildet dabei eine Buchse, in welche der Adapter oder die Halterung einsteckbar ist.The design of the pump according to the invention can be based on different types. It is essential that one of the Stub is formed as a part of the connector on which the adapter can be attached in the axial direction. there seals the bracket directly or indirectly against that of the Socket formed receptacle and against the connecting flange. It is particularly useful to use one of the pump nozzles Form cup-shaped receptacle into which an annular Adapter or an annular bracket for the hydraulic Component can be inserted. The cup-shaped receptacle forms thereby a socket into which the adapter or the holder is insertable.
In einer besonders vorteilhaften Gestaltung der Pumpe ist in die druckseitige Halterung ein Rückschlagventil eingesetzt. Dieses Rückschlagventil dient der Flüssigkeitssäule im System als Schwerkraftbremse, falls die Pumpe nicht läuft. Ein solches Rückschlagventil ist im Gegensatz zu bekannten, in Heizwasserkreisläufen integrierten Ventilen einfach einzusetzen und damit kostengünstig in der Montage und der Wartung.In a particularly advantageous design of the pump is in a non-return valve is used in the pressure side bracket. This check valve serves the liquid column in the system as a gravity brake if the pump is not running. On such check valve is in contrast to known, in Heating water circuits integrated valves simply use and thus inexpensive to assemble and Maintenance.
In einer besonders vorteilhaften Ausführungsform ist in dem Druckstutzen in Strömungsrichtung vor dem in der Halterung eingesetzten Rückschlagventil ein zusätzliches Absperrventil angeordnet. Das Absperrventil ist vorteilhafterweise so ausgebildet, daß es ebenso wie das Rückschlagventil als optionales Modul in eine entsprechende Aufnahme des Druckstutzens eingesetzt werden. Das Absperrventil ist in einer vorteilhaften Ausführungsform durch einfache mechanische Mittel von Außen betätigbar.In a particularly advantageous embodiment, the Pressure port in the flow direction in front of the in the holder check valve used an additional shut-off valve arranged. The shut-off valve is advantageously so trained that it as well as the check valve as optional module in a corresponding recording of the Pressure port are used. The shut-off valve is in an advantageous embodiment by simple mechanical means can be operated from the outside.
Ein weiterer besonderer Vorteil der Erfindung besteht darin, daß es nunmehr möglich ist, in das Pumpengehäuse modulare hydraulische Komponenten einzusetzen, ohne die Baulänge der Pumpe zu verändern. Dabei bleibt die Dichtung zu den Anschlußflanschen der Rohrleitung gewährleistet.Another particular advantage of the invention is that it is now possible to modular in the pump housing use hydraulic components without the overall length of the Change pump. The seal remains with the Connection flanges of the pipeline guaranteed.
Ein Ausführungsbeispiel der erfindungsgemäßen Pumpe ist in den Zeichnungen 1 bis 3 dargestellt und wird im folgenden näher beschrieben. Es zeigen
- Figur 1
- eine Ansicht der erfindungsgemäßen Pumpe,
-
Figur 2 - einen Schnitt durch eine Pumpe und
-
Figur 3 - einen Schnitt durch den Druckstutzen.
- Figure 1
- a view of the pump according to the invention,
- Figure 2
- a section through a pump and
- Figure 3
- a section through the pressure port.
In der Figur 1 ist eine Pumpe in Form einer Kreiselmotorpumpe
1 dargestellt. Das Pumpengehäuse 2 bildet eine Pumpenkammer
3, in der ein nicht dargestelltes Laufrad koaxial zur Achse 4
auf einer Welle gelagert ist. Die Welle wird von einem
Elektromotor 32 betrieben, der zusammen mit der Welle an das
Gehäuse angeflanscht ist. Die Pumpenkammer 3 weist auf der
dem Elektromotor 32 abgewandten Seite einen koaxialen Einlaß
auf, der mit dem Saugstutzen 6 verbunden ist. Ferner weist
die Pumpenkammer 3 einen Auslaß 7 auf, der zum Druckstutzen 8
führt (Figur 2).In Figure 1 is a pump in the form of a centrifugal motor pump
1 shown. The
Saugstutzen 6 und Druckstutzen 8 liegen auf einer gemeinsamen
Achse (in-line) und sind an den Anschlußflansch 13 der nicht
dargestellten Rohrleitung angeschlossen. Im Saugstutzen 6 und
im Druckstutzen 8 ist jeweils ein Absperrventil mit einer
drehverstellbaren Klappe 10 angebracht. An der Klappe 10 sind
Verstellbolzen 11 befestigt, die drehbar im Pumpengehäuse 2
gelagert sind und die mittels eines aus dem Gehäuse 2
herausragenden Kopfes 12 in Form eines Sechskant von Außen
bewegt werden können.
Die beiden Klappen sind jeweils von einer ringförmigen
Dichtmanschette 19 aus Kunststoff umgeben, die koaxial im
Stutzenende einliegt und von Außen eindrückbar ist. In der
Dichtmanschette 19 liegt ein ringförmiger Metalleinsatz 23
ein, der einen mittleren Bereich des zylindrischen
Manschettenaußenmantels bildet und eine Spielpassung zum
Stutzeninneren aufweist. Der ringförmige Metalleinsatz 23 ist
somit auf beiden Stirnseiten und auf der Innenseite zur
Klappe 10 zugewandt vom Kunststoff der Dichtmanschette 19
umgeben.The two flaps are each of an annular
Wie in den Figuren 2 und 3 zu erkennen, ist der Druckstutzen
8 ist als Steckverbindung ausgebildet, in die ein als
Halterung für eine hydraulische Komponente dienender Adapter
14 einsetzbar ist. Dazu ist im Bereich des Druckstutzens 8
eine topfförmige Aufnahme 15 an das Pumpengehäuse 2
angegossen, in welche die Halterung 14 mit der hydraulischen
Komponente, in diesem Falle einem Rückschlagventil 16,
eingesetzt ist. Der Adapter 14 ragt über den äußeren Rand 32
der Aufnahme hinaus.As can be seen in Figures 2 and 3, the
Das Rückschlagventil 16 ist mit seinem von einer Feder 17
gegen den Ventilsitz beaufschlagten Ventilklappe 18 in einer
das Ventilgehäuse bildenden ringförmigen Halterung 14 aus
Metall eingebaut.The
Die eingesetzte ringförmige Halterung 14 bildet mit ihrer zum
Anschlußflansch 13 gerichteten Grundfläche 20 das passende
Gegenstück zum Anschlußflansch 13. Um die Grundfläche 20
gegen den Anschlußflansch 13 abzudichten, ist auf die
Grundfläche 20 eine Flachdichtung 21 aufgeklebt. Zur
Abdichtung der Halterung 14 gegenüber der Dichtmanschette 19
ist diese an der äußeren Stirnseite mit einem angespritzten
Ringwulst 25 versehen, auf dem der Adapter 14 mit der
Grundfläche 22 dichtend aufliegt. The inserted
In Ausführungsformen der Pumpe, in denen das Absperrventil
fehlt, kann auf dem Absatz 31 der Aufnahme 15 ein Dichtring
in eine entsprechende Nut eingelegt sein.In embodiments of the pump in which the shut-off valve
is missing, a sealing ring can be on the
Der Adapter, bzw. die Halterung 14 ist axial in der Aufnahme
15 gegen den Absatz 31 verschieblich und in radialer Richtung
durch den Rand der Aufnahme 15 formschlüssig gehalten. Im
nichtmontierten Zustand wird die Halterung 14 durch eine den
Rand der Aufnahme 15 durchdringende und in ein Sackloch 26
der Wandung 27 der Halterung 14 eingreifende Schraube 28
gegen ein Herausfallen gesichert. Der Innendurchmesser des
Sacklochs 26 ist größer als der Durchmesser der Schraube 28,
um eine gewisse Toleranz auszugleichen.The adapter or the
An das Gehäuse 2 der Pumpe 1 sind im Bereich der Stutzen 6
und 8 Halteringe 29 angeformt, gegen die der Anschlußflansch
13 der Rohrleitung mittels Schrauben oder Klammern
verspannbar ist. In diesem Ausführungsbeispiel sind in die
Halteringe 29 Bohrungen 30 in derselben Teilung wie in den
Anschlußflansch 13 eingebracht, so daß eine Befestigung in
der bekannten Art durch Schrauben möglich ist.On the
Claims (13)
- Pump, in particular a centrifugal pump (1), having a suction connection (6) and a pressure connection (8), each of which can be attached to a connecting flange (13) of a pipeline,
characterized in that one of the connections incorporates a seat (15) for the insertion of an adapter (14) which projects beyond the edge (32) of said seat (15), the adapter (14) on the one hand forming a seal against the seat (15) and on the other hand, by means of a surface (20) directed towards the connecting flange (13), forming a seal against said connecting flange (13). - Centrifugal pump according to Claim 1,
characterized in that the adapter (14) forms a holder for a hydraulic component (16). - Centrifugal pump according to Claim 1 or 2,
characterized in that the seat (15) is formed as a pot-shaped bush on one connection (6, 8) of the pump (1), and in that an adapter (14) with appropriate annular shoulder can be inserted into said seat. - Centrifugal pump according to one of the preceding claims,
characterized in that the surface (20) of the adapter (14) directed towards the connecting flange (13) is formed as a sealing counterpart for the connecting flange (13). - Centrifugal pump according to one of the preceding claims,
characterized in thatthe adapter (14) rests in the seat (15) with a positive fit in radial direction and is inserted into the seat (15) so as to be displaceable towards the base (24) in axial direction. - Centrifugal pump according to one of the preceding claims,
characterized in that the adapter (14) is secured against displacement in axial direction by a screw (28) passing through the wall of the seat (15) and engaging in a blind-end slot (26) in the wall (27) of the adapter (14). - Centrifugal pump according to one of the preceding claims,
characterized in that a check valve (16) is inserted into the adapter (14) formed as a holder. - Centrifugal pump according to Claim 7,
characterized in that the holder (14) forms the housing for the check valve (16). - Centrifugal pump according to one of the preceding claims,
characterized in thatthe seat is formed on the pressure connection (8). - Centrifugal pump according to one of the preceding claims,
characterized in that a shutoff valve which can be operated from the outside is disposed in the pressure connection (8). - Centrifugal pump according to Claim 10,
characterized in that the shutoff valve is surrounded by a sealing sleeve (23) on which the adapter can be placed so as to form a seal. - Centrifugal pump according to Claim 10 or 11,
characterized in that the shutoff valve can be removed from a holder provided for said shutoff valve when the adapter (14) has been removed. - Centrifugal pump according to one of the preceding claims,
characterized in that formed on the housing (2) of the pump (1) is a retaining ring (29), against which the connecting flange (13) can be braced by screws or clips.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19836625A DE19836625A1 (en) | 1998-08-13 | 1998-08-13 | Centrifugal pump with check valve |
| DE19836625 | 1998-08-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0979950A1 EP0979950A1 (en) | 2000-02-16 |
| EP0979950B1 true EP0979950B1 (en) | 2003-08-20 |
Family
ID=7877357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99112425A Expired - Lifetime EP0979950B1 (en) | 1998-08-13 | 1999-06-30 | Centrifugal pump with check-valve |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0979950B1 (en) |
| DE (2) | DE19836625A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202011109416U1 (en) | 2011-12-22 | 2013-03-25 | Robert Bosch Gmbh | Combined volumetric flow display and volumetric flow control device |
| EP3441656A1 (en) | 2017-08-09 | 2019-02-13 | DP Industries B.V. | Flexible joint with non-return valve |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE482824C (en) * | 1927-09-07 | 1929-09-20 | Fritz Seelhorst | Sealing ring |
| GB580079A (en) * | 1945-02-02 | 1946-08-26 | Dudley George Jones | Improvements in and relating to centrifugal pumps |
| CH423369A (en) * | 1965-04-14 | 1966-10-31 | Calotech Ets | Low-vibration connection |
| DE1967531U (en) * | 1967-04-01 | 1967-08-31 | Kurt Caps | HEATING CIRCULATION PUMP WITH CIRCULATION BLOCK. |
| DE8628933U1 (en) * | 1986-10-30 | 1987-01-15 | Meibes, Alfred, 3004 Isernhagen | Functional unit device for pumps, especially for use in heating systems |
| DE9310091U1 (en) * | 1993-07-07 | 1993-09-23 | J. Hartlage GmbH & Co. KG, 49090 Osnabrück | VERTICAL CENTRIFUGAL PUMP |
| US5466995A (en) * | 1993-09-29 | 1995-11-14 | Taco, Inc. | Zoning circulator controller |
| US5480289A (en) * | 1994-09-13 | 1996-01-02 | Lee; Albert | Connector and mounting arrangement for a windshield washer pump |
| DE19752762A1 (en) * | 1997-11-28 | 1999-06-02 | Wilo Gmbh | Motor centrifugal pump |
| DE29822406U1 (en) * | 1998-12-16 | 1999-04-08 | Viessmann Werke GmbH & Co., 35108 Allendorf | Connection housing for a pump |
-
1998
- 1998-08-13 DE DE19836625A patent/DE19836625A1/en not_active Withdrawn
-
1999
- 1999-06-30 EP EP99112425A patent/EP0979950B1/en not_active Expired - Lifetime
- 1999-06-30 DE DE59906651T patent/DE59906651D1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE19836625A1 (en) | 2000-02-17 |
| DE59906651D1 (en) | 2003-09-25 |
| EP0979950A1 (en) | 2000-02-16 |
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