EP0577936B1 - Pump - Google Patents
Pump Download PDFInfo
- Publication number
- EP0577936B1 EP0577936B1 EP93106328A EP93106328A EP0577936B1 EP 0577936 B1 EP0577936 B1 EP 0577936B1 EP 93106328 A EP93106328 A EP 93106328A EP 93106328 A EP93106328 A EP 93106328A EP 0577936 B1 EP0577936 B1 EP 0577936B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- rotor shaft
- face
- casing
- cooling fins
- 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
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
- F04C15/0023—Axial sealings for working fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
- F04C15/0034—Sealing arrangements in rotary-piston machines or pumps for other than the working fluid, i.e. the sealing arrangements are not between working chambers of the machine
- F04C15/0038—Shaft sealings specially adapted for rotary-piston machines or pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0096—Heating; Cooling
Definitions
- the invention relates to a pump with a Axial direction wavy and cylindrical on its circumference molded pump element, which is attached to a a pump housing mounted rotor shaft in one Pump channel of the pump housing rotates.
- a pump of this type is from Germany Publication DE 34 18 708 A1 known.
- This pump has a rotor located in a pump channel which the pump element protrudes collar-shaped is.
- the pump element is in its axial Longitudinally wavy while its Circumferential surfaces are circular cylindrical.
- the rotor is connected to a drive Rotor shaft fastened and rotated in one in the Pump housing trained pump channel with a Pump inlet and a pump outlet is connected.
- For Seals between the inlet and outlet of the pump are in the pump channel axially displaceable sealing elements provided against the working surface of the pump element be pressed and the wave motion of the rotating Pump elements follow.
- the well-known pump has with regard to their Conveying capacity especially when conveying thick matter as proven reliable.
- their use is problematic when the pump is used in the aseptic area should.
- the known pump has it has been found that there is contamination in the Pump channel conveyed goods through from outside into the pump entering particles can come. Beyond that it comes due to the construction of conventional seals Residual deposits of the material to be conveyed, which is also a Can cause contamination of the conveyed goods. This applies especially when the rotor and shaft bearings due to the design-related required Running play to excessive stress on the seal and ultimately leads to their destruction.
- the object of the invention is a pump improve the type mentioned in that a Contamination of the pumped to the pump in the pump channel Good by entering the pump housing from the outside Particle is excluded and a deposit of Conveyed material is avoided, as well as damage to the pump is excluded due to overheating.
- the slide ring elements are concentric stressed and flushed Pump interior arranged. This arrangement allows the inside of the pump to be Easy to clean slide ring elements. On this is the case when using the pump Aseptic area a termination of the pumped goods with impurities excluded at all times.
- the wear of the sealing element can be thereby reduce that in the flat face of the pump element a recess is formed in which a slide ring at which the in the annular groove of the Sealing element is seated in the housing opening. In this way it is possible to use the material of the seal and the material of the slide ring in an optimal way to coordinate with each other so that good sliding behavior can be achieved with little wear on the seal can.
- cooling fins are vertical extend, because in this case, which is characterized by the Convection of the heated ambient air natural air flow can be used.
- This Cooling can also be used to cool the Pump housing can be used when the cooling fins are on the end face of the pump housing assigned Extend the bearing flange.
- the Cooling effect of the cooling fins are supported, that the cooling fins from that through the rotor shaft flowing coolant are flowing.
- the pump has a pump housing 1, which on a Bearing flange 2 is attached.
- a housing opening 3rd molded through which a one-sided through bearing 4 in the bearing flange 2 mounted rotor shaft 5 in the Pump housing 1 is guided.
- annular groove 11 formed, which does not have a shown channel connected to a superheated steam inlet 12 is.
- annular sealing element 13 At the front end of the annular groove 11 is a annular sealing element 13, which has a annular pressure piece 14 by the force of a Coil spring 15 is spring-loaded, which between the Thrust piece 14 and the rear shoulder of the annular groove 11 is clamped.
- a second annular groove-shaped recess 16 is formed in the rear facing the housing opening 3 flat end wall 6b of the hub 6a of the pump element 6 .
- a sealing ring 17 In this recess 16 is a sealing ring 17, the has a rectangular cross section.
- the thigh of the sealing ring 17 seal against a slide ring 18 the outer wall 16a and the end wall 16b of the recess 16 from.
- the end face of the slide ring 18 lies against it the sealing element 13.
- the sealing element 13 is also under pressure Superheated steam pressed against the slide ring 18. This slides with the pump element 6 rotating on the sealing element 13, whereby at the same time the Sealing effect of the ring seal 17 is supported. On this is a permanent seal of the pump channel 9 compared to the superheated steam in the annular groove 11 sufficient contact pressure is ensured at the same time.
- the Rotor shaft 5 For cooling the rotor shaft 5, which by the in Ring groove 11 pending hot steam is heated, the Rotor shaft 5 has an axial bore 19 with radial Channels 19a, b of the rotor shaft 5 into one Cooling pipe system is connected.
- the radial Channels 19a, b open into annular grooves 20,21 which in the Outside of the rotor shaft 5 are embedded.
- the first Ring groove 20 forms with the inner wall of the opening of the Bearing flange 2 a chamber, over the compressed air, which enters the chamber via a compressed air connection 22, fed into the cooling line system of the rotor shaft 5 becomes.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Description
Die Erfindung betrifft eine Pumpe mit einem in Achsrichtung wellenförmig und an seinem Umfang zylindrisch ausgeformten Pumpelement, welches befestigt auf einer in einem Pumpengehäuse gelagerten Rotorwelle in einem Pumpkanal des Pumpengehäuses rotiert.The invention relates to a pump with a Axial direction wavy and cylindrical on its circumference molded pump element, which is attached to a a pump housing mounted rotor shaft in one Pump channel of the pump housing rotates.
Eine Pumpe dieser Art ist aus der deutschen Offenlegungsschrift DE 34 18 708 A1 bekannt. Diese Pumpe weist einen in einem Pumpkanal gelegenen Rotor auf, an dem das Pumpelement kragenförmig abstehend ausgebildet ist. Das Pumpelement ist dabei in seiner axialen Längsrichtung wellenförmig ausgeformt, während seine Umfangsflächen kreiszylindrisch ausgebildet sind. Der Rotor ist auf einer mit einem Antrieb verbundenen Rotorwelle befestigt und rotiert in einem in dem Pumpengehäuse ausgebildeten Pumpkanal, der mit einem Pumpenein- und einem Pumpenauslaß verbunden ist. Zur Abdichtung zwischen Einlaß und Auslaß der Pumpe sind in dem Pumpkanal axial verschiebbare Dichtelemente vorgesehen, die gegen die Arbeitsfläche des Pumpelements gedrückt werden und der Wellenbewegung des rotierenden Pumpelements folgen. A pump of this type is from Germany Publication DE 34 18 708 A1 known. This pump has a rotor located in a pump channel which the pump element protrudes collar-shaped is. The pump element is in its axial Longitudinally wavy while its Circumferential surfaces are circular cylindrical. Of the The rotor is connected to a drive Rotor shaft fastened and rotated in one in the Pump housing trained pump channel with a Pump inlet and a pump outlet is connected. For Seals between the inlet and outlet of the pump are in the pump channel axially displaceable sealing elements provided against the working surface of the pump element be pressed and the wave motion of the rotating Pump elements follow.
Die bekannte Pumpe hat sich hinsichtlich ihrer Förderleistung besonders beim Fördern von Dickstoffen als zuverlässig bewährt. Problematisch ist ihr Einsatz aber dann, wenn die Pumpe im Aseptikbereich eingesetzt werden soll. Bei einer solchen Verwendung der bekannten Pumpe hat sich herausgestellt, daß es zu Verunreinigungen des in dem Pumpkanal geförderten Gutes durch von außen in die Pumpe eintretende Partikel kommen kann. Darüber hinaus kommt es bedingt durch die Konstruktion herkömmlicher Abdichtungen zu Restablagerungen des Fördergutes, welche ebenfalls eine Kontamination des geförderten Gutes verursachen können. Dies gilt besonders dann, wenn die Rotor- und Wellenlagerung aufgrund des konstruktionsbedingten erforderlichen Laufspiels zu einer übermäßigen Beanspruchung der Abdichtung und schließlich zu deren Zerstörung führt.The well-known pump has with regard to their Conveying capacity especially when conveying thick matter as proven reliable. However, their use is problematic when the pump is used in the aseptic area should. With such a use the known pump has it has been found that there is contamination in the Pump channel conveyed goods through from outside into the pump entering particles can come. Beyond that it comes due to the construction of conventional seals Residual deposits of the material to be conveyed, which is also a Can cause contamination of the conveyed goods. This applies especially when the rotor and shaft bearings due to the design-related required Running play to excessive stress on the seal and ultimately leads to their destruction.
Die Aufgabe der Erfindung besteht darin, eine Pumpe der eingangs genannten Art dahingehend zu verbessern, daß eine Kontaminierung des in dem Pumpkanal zu der Pumpe geförderten Gutes durch von außen in das Pumpengehäuse eintretende Partikel ausgeschlossen ist und eine Ablagerung von Fördergut vermieden wird, sowie Schädigung der Pumpe aufgrund von Überhitzung ausgeschlossen wird.The object of the invention is a pump improve the type mentioned in that a Contamination of the pumped to the pump in the pump channel Good by entering the pump housing from the outside Particle is excluded and a deposit of Conveyed material is avoided, as well as damage to the pump is excluded due to overheating.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß ausgehend von der der rückwärtigen Stirnseite des Pumpenelements benachbarten Wand des Pumpengehäuses an der Wand der die Rotorwelle aufnehmenden Gehäuseöffnung eine Ringnut ausgeformt ist, in der ein bei rotierendem Pumpelement an der ebenen Stirnseite des Pumpelements gleitend anliegendes federbelastetes Dichtelement einsitzt, welches über mit der Ringnut verbundene Druckkanäle mit Heißdampf druckbeaufschlagt ist und daß die Rotorwelle radiale und axiale Kanäle aufweist, die ein Kühlsystem bilden und von einem Kühlmittel duchströmt werden. This object is achieved in that starting from that of the rear face of the Pump element adjacent wall of the pump housing on the Wall of the housing opening receiving the rotor shaft Ring groove is formed in which a rotating Pump element on the flat face of the pump element sliding spring-loaded sealing element is seated, which with pressure channels connected to the annular groove Superheated steam is pressurized and that the rotor shaft has radial and axial channels that a cooling system form and be flowed through by a coolant.
Durch die erfindungsgemäße Anordnung einer Dichtung, die bei rotierendem Pumpelement als Gleitringdichtung gegen die ebene Stirnfläche des Pumpelemts gedrückt wird, ist eine zuverlässige Abdichtung des Innenraums des Pumpengehäuses gegenüber der Umgebung gewährleistet. Da zudem Heißdampf zum Anpressen der Dichtung gegen die Stirnseite des Pumpelementes genutzt wird, ist selbst bei einer Leckage der Dichtung Keimfreiheit gewährleistet. Zudem sind die Gleitringelemente konzentrisch planlaufend beansprucht und im durchspülten Pumpeninnenbereich angeordnet. Diese Anordnung ermöglicht es, das Pumpeninnere mit den Gleitringelementen auf einfache Weise zu reinigen. Auf diese Weise ist bei Verwendung der Pumpe im Aseptikbereich eine Konterminierung des gepumpten Gutes mit Verunreinigungen zu jeder Zeit ausgeschlossen.The inventive arrangement of a seal against the rotating pump element as a mechanical seal the flat end face of the pump element is pressed a reliable seal of the interior of the Pump housing guaranteed to the environment. There also steam to press the seal against the Front side of the pump element is used, even at leakage of the seal ensures sterility. In addition, the slide ring elements are concentric stressed and flushed Pump interior arranged. This arrangement allows the inside of the pump to be Easy to clean slide ring elements. On this is the case when using the pump Aseptic area a termination of the pumped goods with impurities excluded at all times.
Gleichzeitig stellt das in der Rotorwelle aus radial und axial verlaufenden Kanäle gebildete und von Kühlmittel durchströmte Kühlsystem sicher, daß es zu keiner Schädigung der Pumpe aufgrund von Überhitzung kommen kann. So ermöglicht es die Erfindung keimfreien Heißdampf zum Anpressen der Dichtung zu nutzen und gewährleistet gleichzeitig einen zuverlässigen, störungsfreien Betrieb der Pumpe.At the same time, this turns out radial and in the rotor shaft axially extending channels and formed by coolant flowed cooling system sure that there was none Damage to the pump due to overheating can. The invention thus enables aseptic superheated steam used to press the seal and guaranteed at the same time reliable, trouble-free operation the pump.
Der Verschleiß des Dichtelementes läßt sich dadurch vermindern, daß in der ebenen Stirnseite des Pumpelements eine Ausnehmung eingeformt ist, in der ein Gleitring einliegt, an welchem das in der Ringnut der Gehäuseöffnung einsitzende Dichtelement anliegt. Auf diese Weise ist es möglich, das Material der Dichtung und das Material des Gleitringes in optimaler Weise aufeinander abzustimmen, so daß ein gutes Gleitverhalten bei geringem Verschleiß der Dichtung erzielt werden kann. The wear of the sealing element can be thereby reduce that in the flat face of the pump element a recess is formed in which a slide ring at which the in the annular groove of the Sealing element is seated in the housing opening. In this way it is possible to use the material of the seal and the material of the slide ring in an optimal way to coordinate with each other so that good sliding behavior can be achieved with little wear on the seal can.
Besonders bei einer einseitigen Lagerung der Rotorwelle ist es günstig, wenn die Rotorwelle in einem Lagerflansch gelagert ist, der an wenigstens einer seiner Stirnseiten Kühlrippen aufweist. Bei Verwendung eines solchen Lagerflansches wird die beim Betrieb der Pumpe durch die mit Heißdampf druckbeaufschlagte Sterilsperre entstehende Wärme abgeführt.Especially when the rotor shaft is supported on one side it is convenient if the rotor shaft is in a bearing flange is mounted on at least one of its end faces Has cooling fins. When using one Bearing flange is the by the operation of the pump the sterile lock pressurized with superheated steam generated heat dissipated.
Dabei ist es günstig, wenn sich die Kühlrippen vertikal erstrecken, da in diesem Fall die sich durch die Konvektion der erwärmten Umgebungsluft einstellende natürliche Luftströmung genutzt werden kann. Diese Kühlung kann gleichzeitig auch zur Kühlung des Pumpengehäuses genutzt werden, wenn die Kühlrippen sich auf der dem Pumpengehäuse zugeordneten Stirnseite des Lagerflansches erstrecken. Zusätzlich kann die Kühlwirkung der Kühlrippen dadurch unterstützt werden, daß die Kühlrippen von dem durch die Rotorwelle strömenden Kühlmittel umströmt sind.It is beneficial if the cooling fins are vertical extend, because in this case, which is characterized by the Convection of the heated ambient air natural air flow can be used. This Cooling can also be used to cool the Pump housing can be used when the cooling fins are on the end face of the pump housing assigned Extend the bearing flange. In addition, the Cooling effect of the cooling fins are supported, that the cooling fins from that through the rotor shaft flowing coolant are flowing.
Im folgenden wird die Erfindung anhand einer ein Ausführungsbeispiel zeigenden Zeichnung erläutert. Die Figur zeigt einen Teilschnitt einer im Aseptikbereich eingesetzten erfindungsgemäßen Pumpe in teilweise aufgebrochener Darstellung in Aufsicht.In the following the invention is based on a Embodiment showing drawing explained. The figure shows a partial section of one in the aseptic area used pump according to the invention in part broken representation in supervision.
Die Pumpe weist ein Pumpengehäuse 1 auf, das an einem
Lagerflansch 2 befestigt ist. In der dem Lagerflansch 2
zugeordneten rückwärtigen Gehäusewand 1a ist koaxial zu
der Öffnung des Lagerflansches 2 eine Gehäuseöffnung 3
ausgeformt, durch welche eine einseitig durch Lager 4 in
dem Lagerflansch 2 gelagerte Rotorwelle 5 in das
Pumpengehäuse 1 geführt ist. The pump has a pump housing 1, which on a
Ein in axialer Längsrichtung der Pumpe wellenförmig und
an seinem Umfang zylindrisch ausgebildetes Pumpelement 6
ist mit seiner Nabe 6a auf einem Wellenabsatz 5a am
stirnseitigen Ende 5b der Rotorwelle 5 mittels einer
Paßfeder 7 und einer in eine stirnseitige Bohrung 5c der
Rotorwelle eingeschraubten Schraube 8 drehfest mit der
Rotorwelle 5 verbunden. Das Pumpelement 6 rotiert in
einem von dem Pumpengehäuse 1 umgebenen Pumpkanal 9,
wobei die vordere Stirnwand des Pumpkanals 9 durch einen
abnehmbaren Gehäusedeckel 10 gebildet ist.An undulating in the axial longitudinal direction of the
Ausgehend von der Innenseite 1a' der rückwärtigen
Gehäusewand 1a ist in der Gehäuseöffnung 3 eine radial
umlaufende Ringnut 11 ausgeformt, die über einen nicht
gezeigten Kanal mit einem Heißdampfeinlaß 12 verbunden
ist. Am vorderen Ende der Ringnut 11 liegt ein
ringförmiges Dichtelement 13 an, das über ein
ringförmiges Druckstück 14 durch die Kraft einer
Spiralfeder 15 federbelastet ist, welche zwischen dem
Druckstück 14 und dem hinteren Absatz der Ringnut 11
eingespannt ist.Starting from the inside 1a 'of the rear
Housing wall 1 a is radial in the housing opening 3
circumferential
In der der Gehäuseöffnung 3 zugewandten rückwärtigen
ebenen Stirnwand 6b der Nabe 6a des Pumpelements 6 ist
eine zweite ringnutförmige Ausnehmung 16 ausgeformt. In
dieser Ausnehmung 16 liegt ein Dichtungsring 17 ein, der
einen rechtwinkligen Querschnitt aufweist. Die Schenkel
des Dichtrings 17 dichten einen Gleitring 18 gegenüber
der äußeren Wand 16a und der Stirnwand 16b der Ausnehmung
16 ab. Mit seiner Stirnseite liegt der Gleitring 18 an
dem Dichtelement 13 an.In the rear facing the housing opening 3
Das Dichtelement 13 wird bei Druckbeaufschlagung mit
Heißdampf gegen den Gleitring 18 gedrückt. Dieser gleitet
bei rotierendem Pumpelement 6 auf dem Dichtelement 13,
wobei durch den Anpreßdruck gleichzeitig auch die
Dichtwirkung der Ringdichtung 17 unterstützt wird. Auf
diese Weise ist eine dauerhafte Abdichtung des Pumpkanals
9 gegenüber dem Heißdampf in der Ringnut 11 bei
gleichzeitig ausreichendem Anpreßdruck sichergestellt.The sealing
Zum Kühlen der Rotorwelle 5, welche durch den in der
Ringnut 11 anstehenden Heißdampf erwärmt wird, weist die
Rotorwelle 5 eine axiale Bohrung 19 auf, die mit radialen
Kanälen 19a,b der Rotorwelle 5 zu einem
Kühlleitungssystem verbunden ist. Die radialen
Kanäle 19a,b münden in Ringnuten 20,21, die in die
Außenseite der Rotorwelle 5 eingelassen sind. Die erste
Ringnut 20 bildet mit der Innenwand der Öffnung des
Lagerflansches 2 eine Kammer, über die Druckluft, welche
über einen Druckluftanschluß 22 in die Kammer eintritt,
in das Kühlleitungssystem der Rotorwelle 5 eingespeist
wird.For cooling the
Die Druckluft tritt über die radialen Kanäle 19b aus der
Rotorwelle 5 aus und wird über einen zwischen den
benachbarten Stirnwänden 1a,2a von Pumpengehäuse 1 und
Lagerflansch 2 ausgebildeten Spalt 23 abgeleitet. Dabei
werden in vertikaler Richtung ausgerichtete Kühlrippen 24
umströmt, die auf der dem Pumpengehäuse 1 zugeordneten
Stirnwand 2a des Lagerflansches 2 ausbegildet sind. Auf
diese Weise wird durch die Kühlluft neben der
Rotorwelle 5 selbst auch das Pumpengehäuse 1 und der
Lagerflansch 2 gekühlt. The compressed air exits from the
- 11
- PumpengehäusePump housing
- 1a1a
- rückwärtige Gehäusewandrear housing wall
- 1a'1a '
- Innenseite der rückwärtigen Gehäusewand 1aInside of the rear housing wall 1a
- 22nd
- LagerflanschBearing flange
- 2a2a
-
Stirnwand des Lagerflansch 2End wall of the
bearing flange 2 - 33rd
- GehäuseöffnungHousing opening
- 44th
- Lagercamp
- 55
- RotorwelleRotor shaft
- 5a5a
-
Wellenende der Rotorwelle 5Shaft end of the
rotor shaft 5 - 5b5b
-
Ende der Rotorwelle 5End of the
rotor shaft 5 - 5c5c
-
stirnseitige Bohrung der Rotorwelle 5Frontal bore of the
rotor shaft 5 - 66
- PumpelementPump element
- 6a6a
-
Nabe des Pumpelements 6
Pump element hub 6 - 6b6b
- Stirnwand der Nabe 6aEnd wall of the hub 6a
- 77
- Paßfederadjusting spring
- 88th
- Schraubescrew
- 99
- PumpkanalPump channel
- 1010th
- GehäusedeckelHousing cover
- 1111
- RingnutRing groove
- 1212th
- HeißdampfeinlaßSuperheated steam inlet
- 1313
- ringförmiges Dichtelementannular sealing element
- 1414
- ringförmiges Druckstückannular thrust piece
- 1515
- SpiralfederCoil spring
- 1616
- ringnutförmige Ausnehmungannular groove-shaped recess
- 16a16a
-
äußere Wand der Ausnehmung 16outer wall of the
recess 16 - 16b16b
-
Stirnwand der Ausnehmung 16End wall of the
recess 16 - 1717th
- Dichtring Sealing ring
- 1818th
- GleitringSlide ring
- 1919th
-
axiale Bohrung der Rotorwelle 5axial bore of the
rotor shaft 5 - 19a,b19a, b
-
radiale Kanäle der Rotorwelle 5radial channels of the
rotor shaft 5 - 20,2120.21
-
Ringnuten der Rotorwelle 5Ring grooves of the
rotor shaft 5 - 2222
- DruckluftanschlußCompressed air connection
- 2323
- Spaltgap
- 2424th
- KühlrippenCooling fins
Claims (6)
- A pump having a pump element (6) shaped helically in the axial direction and cylindrically at its periphery which is attached to a rotor shaft (5) mounted in a pump casing (1) and rotates in a pump channel (9) of the pump casing (1),
characterised in that starting from the wall (1a) of the pump casing (1) adjacent the end face (6b) of the flat pump element (6), the wall of the casing opening (3) receiving the rotor shaft (5) is formed with an annular groove (11) in which a spring-loaded sealing element (13) fits which bears slidably against the flat end face (6b) of the pump element (6) when said pump element (6) rotates and which experiences the pressure of superheated steam via pressure channels connected to the annular groove (11), the rotor shaft (5) having radial and axial channels (19a, b) which form a cooling system and through which a coolant flows. - A pump according to claim 1,
characterised in that the flat end face (6b) of the pump element (6) is formed with a recess (16) in which a slide ring (18) fits, against which the sealing element (13) fitted in the annular groove (11) of the casing opening (3) bears. - A pump according to claim 1 or 2,
characterised in that the rotor shaft (5) is mounted in a bearing flange (2) at least one of whose end faces (2a) is formed with cooling fins (24). - A pump according to claim 3,
characterised in that the cooling fins (24) extend vertically. - A pump according to claims 3 or 4,
characterised in that the cooling fins extend on the end face (2a) of the bearing flange (2) associated with the pump casing (1). - A pump according to one of claims 3 to 5,
characterised in that the coolant flowing through the rotor shaft (5) flows around the cooling fins (24).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9209117U | 1992-07-09 | ||
| DE9209117U DE9209117U1 (en) | 1992-07-09 | 1992-07-09 | pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0577936A1 EP0577936A1 (en) | 1994-01-12 |
| EP0577936B1 true EP0577936B1 (en) | 1998-11-04 |
Family
ID=6881372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93106328A Expired - Lifetime EP0577936B1 (en) | 1992-07-09 | 1993-04-20 | Pump |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5352103A (en) |
| EP (1) | EP0577936B1 (en) |
| DE (2) | DE9209117U1 (en) |
| ES (1) | ES2123584T3 (en) |
| HK (1) | HK1019539A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0986709A4 (en) | 1997-01-17 | 2001-05-02 | Niagara Pump Corp | Linear peristaltic pump |
| JP2004154425A (en) * | 2002-11-07 | 2004-06-03 | Nemoto Kikaku Kogyo Kk | Heart-lung machine, and heat exchanger |
| WO2005066498A1 (en) * | 2004-01-09 | 2005-07-21 | Manfred Sommer | Rotary piston pump comprising an axially movable vane |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3561894A (en) * | 1969-04-07 | 1971-02-09 | Copeland Refrigeration Corp | Intake charge cooling system for rotary machine |
| DE2544082A1 (en) * | 1975-10-02 | 1977-04-14 | Comprotek Sa | Cage and meshing cam rotary piston machines - are used as compressors with charge cooling included in cycle |
| DE2645755A1 (en) * | 1976-10-09 | 1978-04-13 | Klein Schanzlin & Becker Ag | SHAFT SEAL |
| US4181480A (en) * | 1977-08-17 | 1980-01-01 | Balsiger Harold E | Rotary blade hydraulic motor with fluid bearing |
| JPS5847196A (en) * | 1981-09-16 | 1983-03-18 | Oji Paper Co Ltd | Sealing method for pump |
| US4469017A (en) * | 1983-02-23 | 1984-09-04 | Dover Corporation | Static leak seal assembly for use in fluid containing machinery |
| DE3418708A1 (en) * | 1983-05-21 | 1984-11-22 | Sine Pumps N.V., Curacao, Niederländische Antillen | Pump |
| SE462537B (en) * | 1988-03-17 | 1990-07-09 | Johnson Pump Ab | DEVICE CONTAINING A PUMP WITH A PUMP HOUSE MAKING THE FOUNDATION OF THE PUMP |
| JPH01313685A (en) * | 1988-06-10 | 1989-12-19 | Hitachi Ltd | Shaft seal device for screw compressor |
| FR2637655B1 (en) * | 1988-10-07 | 1994-01-28 | Alcatel Cit | SCREW PUMP TYPE ROTARY MACHINE |
| US5197869A (en) * | 1991-03-22 | 1993-03-30 | The Gorman-Rupp Company | Rotary gear transfer pump having pressure balancing lubrication, bearing and mounting means |
-
1992
- 1992-07-09 DE DE9209117U patent/DE9209117U1/en not_active Expired - Lifetime
-
1993
- 1993-04-20 DE DE59309103T patent/DE59309103D1/en not_active Expired - Lifetime
- 1993-04-20 ES ES93106328T patent/ES2123584T3/en not_active Expired - Lifetime
- 1993-04-20 EP EP93106328A patent/EP0577936B1/en not_active Expired - Lifetime
- 1993-05-18 US US08/063,449 patent/US5352103A/en not_active Expired - Fee Related
-
1998
- 1998-12-28 HK HK98117620A patent/HK1019539A1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE9209117U1 (en) | 1992-08-27 |
| US5352103A (en) | 1994-10-04 |
| HK1019539A1 (en) | 2000-02-11 |
| ES2123584T3 (en) | 1999-01-16 |
| EP0577936A1 (en) | 1994-01-12 |
| DE59309103D1 (en) | 1998-12-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1069362B1 (en) | Rotatable connection for alternate mediums | |
| DE2661104C2 (en) | ||
| EP2071131B1 (en) | Seal for at least one shaft with at least one hydraulic seal | |
| EP2137378B1 (en) | Pump or motor | |
| DE2827364A1 (en) | MECHANICAL SEAL | |
| EP0641421B1 (en) | Floating-ring seal | |
| DE1475601A1 (en) | Mechanical compression seal | |
| EP0509218B1 (en) | Gear pump | |
| DE102007054233A1 (en) | Device for dispersing or homogenizing | |
| EP0955466B1 (en) | Annular gap seal | |
| DE2825616A1 (en) | GEAR PUMP | |
| EP0577936B1 (en) | Pump | |
| DE2710236C3 (en) | Screw pump | |
| DE1653921C3 (en) | Rotary piston pump | |
| DE102007043579A1 (en) | Positive-displacement machine for compressible media, has drive shaft which is supported by mount at drive-lateral end, where two counter weights are fitted on drive shaft | |
| DE3434694A1 (en) | SCREW COMPRESSOR FOR GASEOUS MEDIA | |
| EP2864640A1 (en) | Motorized centrifugal pump with a rotary seal | |
| EP1815204A1 (en) | Shell-and-tube high-pressure heat exchanger | |
| DE102018221146A1 (en) | Radial pump with an external rotor to convey a fluid from an axial direction to a radial direction or vice versa | |
| DE102011111706B4 (en) | ROTARY | |
| EP0461131B1 (en) | Device for relieving axial thrusts | |
| WO2006102782A1 (en) | Transmission or motor spindle device comprising a sealing device for a machine tool, and use of said sealing device | |
| DE2849256C3 (en) | Mechanical seal | |
| DE102009038937A1 (en) | Screw compressor has two rotors that are divided in main rotor and auxiliary rotor, where profile section of main rotor has distinct helical gearing | |
| DE19633559A1 (en) | Flow controller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE ES FR GB IT |
|
| 17P | Request for examination filed |
Effective date: 19940526 |
|
| R17P | Request for examination filed (corrected) |
Effective date: 19940603 |
|
| 17Q | First examination report despatched |
Effective date: 19951124 |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SIG COMBIBLOC GMBH |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE ES FR GB IT |
|
| REF | Corresponds to: |
Ref document number: 59309103 Country of ref document: DE Date of ref document: 19981210 |
|
| ET | Fr: translation filed | ||
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19981222 |
|
| ITF | It: translation for a ep patent filed |
Owner name: SOCIETA' ITALIANA BREVETTI S.P.A. |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2123584 Country of ref document: ES Kind code of ref document: T3 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20050422 Year of fee payment: 13 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060420 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20060420 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20070514 Year of fee payment: 15 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20070523 Year of fee payment: 15 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20070427 Year of fee payment: 15 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20081231 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20080430 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20080421 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20080421 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20080420 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20120417 Year of fee payment: 20 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R071 Ref document number: 59309103 Country of ref document: DE |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20130423 |