EP1906026B1 - Centrifugal pump - Google Patents
Centrifugal pump Download PDFInfo
- Publication number
- EP1906026B1 EP1906026B1 EP07116609A EP07116609A EP1906026B1 EP 1906026 B1 EP1906026 B1 EP 1906026B1 EP 07116609 A EP07116609 A EP 07116609A EP 07116609 A EP07116609 A EP 07116609A EP 1906026 B1 EP1906026 B1 EP 1906026B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wear part
- rotation
- pump
- axis
- accordance
- 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.)
- Not-in-force
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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
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous
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- 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
- F04D15/0027—Varying behaviour or the very pump
- F04D15/0033—By-passing by increasing clearance between impeller and its casing
-
- 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
- F04D29/08—Sealings
- F04D29/16—Sealings between pressure and suction sides
- F04D29/165—Sealings between pressure and suction sides especially adapted for liquid pumps
- F04D29/167—Sealings between pressure and suction sides especially adapted for liquid pumps of a centrifugal flow wheel
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- 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
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
- F04D29/4286—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps inside lining, e.g. rubber
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- 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
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/622—Adjusting the clearances between rotary and stationary parts
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- 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
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
Definitions
- the invention relates to a centrifugal pump according to the preamble of claim 1.
- Such a centrifugal pump or Zentrifugalradpumpe comprises a single, helically extending blade, which is rotatably arranged in a pump housing.
- This pump is particularly suitable for the promotion of interspersed with solid admixtures liquids and especially for liquids containing abrasive admixtures.
- This pump has a gap between the impeller edge of the blade and the pump housing. With increasing wear of the impeller edge, this gap increases, so that the sealing effect between impeller edge and pump housing is reduced, whereby the efficiency of the pump is reduced.
- the publication FR 2681906 A1 which is considered as the closest prior art, discloses a Zentrifugalradpumpe with an impeller having a blade, and with a disposed within the pump housing displacement member, wherein the sliding member in the direction of the axis of rotation of the pump expands so that the displacement part and the blade edge one Form gap width.
- the sliding part is mounted linearly movable, so that the width of the gap is adjustable. This arrangement has the disadvantage that the displacement part can tilt during the displacement, so that the displacement part is blocked.
- the displacement part also has a stop which is arranged such that the displacement part can not be moved so far that the displacement part can touch the impeller edge of a newly inserted blade.
- the impeller edge With increasing wear, the impeller edge is formed back, so that the gap between the sliding part and the impeller edge increases. Due to the stop, it is not possible with this sliding part to reduce the enlargement of the gap due to the wear of the impeller edge. This arrangement is therefore not suitable to reduce the caused by the wear of the impeller edge enlargement of the gap. In addition, the arrangement is not suitable to precisely adjust the size of the gap and to maintain this gap width.
- the invention has for its object to provide a Zentrifugalradpumpe whose wearing wheel edge affects less on thegesrad the pump.
- a centrifugal wheel pump comprising a pump housing and an impeller arranged therein, wherein the impeller is rotatably mounted about an axis of rotation, and wherein the impeller has at least one blade with a blade edge, and wherein within the pump housing a the blade edge so enclosing, extending in the direction of rotation of the rotation axis wear part is arranged, that the wear part with respect to the blade edge has a gap, and wherein the wear part in such respect Pump housing is slidably mounted, that a rotation of the Verschleissteils about the rotational axis causes a displacement of the Verschleissteils in the direction of the axis of rotation, thereby changing the gap between the blade edge and the wear part.
- the Zentrifugalradpumpe on an adjustment, which is accessible from outside the pump housing, and which allows rotation of the Verschleissteils. This allows to set the gap between the wear part and the impeller from the outside.
- the width of the gap between the Verschleissteil and the impeller during operation of the Zentrifugalradpumpe is adjustable.
- the centrifugal wheel pump according to the invention comprising the wear part which can be adjusted by turning, can be configured in many different ways, for example as a helical centrifugal centrifugal pump or as a centrifugal pump.
- the Zentrifugalradpumpe may also have an impeller with a plurality of blades.
- the centrifugal wheel pump may also have a plurality of impellers, wherein each impeller has an associated wear part, and wherein at least one wear part is preferably individually adjustable.
- the wear part is rotatably mounted in a helically extending groove or in a thread, so that a rotation of the Verschleissteils about its axis of rotation at the same time causes a displacement in the direction of the axis of rotation.
- the pitch of the groove or the thread is configured relatively flat to cause a slight movement in the direction of the axis of rotation when turning the Verschleissteils, so that the gap width between the wear part and the blade edge is precisely adjustable.
- FIG. 1 shows one from the publication CH 611389 Known SSenzentrifugalradpumpe 1 comprising a housing 3 with a Saugkonusgepuruseteil 3a and a spiral housing part 3b, within which an impeller 2 is rotatably mounted about a rotational axis 2d.
- the impeller 2 is driven by a motor, not shown, via the pump shaft 4 in the direction of rotation 4a, so that a conveyed by the Zentrifugalradpumpe 1 liquid is conveyed in the flow direction S flowing from the inlet opening 3c to the outlet opening 3c, wherein the impeller 2, a blade pressure side a and a Bucket suction side b forms.
- the impeller 2 has a blade 2a with blade edge 2b, wherein a gap c is formed between the suction cone housing part 3a and the blade edge 2b, in the region of which a backflow from the blade pressure side a to the blade suction side b occurs.
- the gap c increases with increasing wear of the blade edge 2b, which reduces the delivery rate and the efficiency of the Zentrifugalradpumpe 1.
- FIG. 2 shows a side view of the inventive Zentrifugalradpumpe 1 comprising a housing 3 with inlet opening 3c and outlet opening 3d, and comprising a within the housing 3 about the rotation axis 2d in the rotational direction e rotatably mounted wear part. 5
- FIG. 3 illustrated section along the section line AA and the in FIG. 4 illustrated section along the section line BB according to FIG. 2 shows the Zentrifugalradpumpe 1 with housing 3, inlet opening 3c and outlet opening 3d, and disposed within the housing 3 impeller 2 and disposed within the housing 3 wear part 5.
- the impeller 2 is fixedly connected to the pump shaft 4, and through this about an axis of rotation 2d rotatably mounted.
- the wear part 5 surrounds the impeller 2 as shown, wherein the wear part 5 is mounted with respect to the housing 3, that a rotation of the Verschleissteils 5 causes in the circumferential direction to the rotation axis 2d, or in the direction e, a displacement of the Verschleissteils 5 in the direction of rotation of the rotation axis 2d ,
- the Verschleissteil 5 has a transverse to the direction of rotation of the axis of rotation 2d groove 5d, which is mounted in a projecting pin 6 of the housing 3, so that rotation of the Verschleissteils 5 forces a displacement of the Verschleissteils 5 in the direction of the axis of rotation 2d.
- the Verschleissteil 5, as shown in the FIGS. 2 and 4 can be seen, two opposing projecting cam 5e, on each of which an adjusting means 7, configured in the illustrated embodiment as a screw 7b, acting on a support point 7a.
- These screws 7b extend as shown FIG. 2 can be seen through the housing 3.
- the housing 3 preferably has a thread for receiving the screw 7b, so that the screw head is outside the housing 3, and thus the screw 7b can be rotated from outside the housing 3, wherein the support point 7a within of the housing 3 acts on the cam 5e.
- the housing 3 as in figure 2 represented, opposite to the wear part 5 acting screws 7b arranged.
- the wear part 5 can be very precisely rotated by a, if necessary, larger angular range of for example up to 45 degrees, the screws 7b are tightened again after turning the Verschleissteils 5, that the support points 7a of both screws 7b bears against a respective cam 5e of the wearing part 5, so that the wearing part 5 is secured in the housing 3 with respect to rotation.
- the wear part 5, as in FIG. 4 illustrated, two cylindrical outer contours 5g, 5h and the pump housing 3 has two cylindrical inner contours 3g, 3h, each forming a running in the direction of the rotation axis 2d seat 53a, 53b, these two seats 53a, 53b spaced in the direction of the axis of rotation 2d are arranged so that the wear part 5 is defined and guided guided in the direction of rotation of the rotation axis 2d.
- a circumferential groove 8 is also arranged in the housing 3 and / or in the wear part 5 as shown, in which advantageously a sealing ring is arranged to, as in FIG. 4 shown to seal the interior space between the two grooves 8.
- FIG. 5 shows a detail aspect of FIG. 4 in an enlarged view.
- the wear part 5 is displaceably mounted in the direction d by the two seats 53a, 53b. Rotation of the wear part 5 is effected by the, as in FIG. 4 represented, in the grooves 5d engaging guide pins 6, a displacement of the Verschleissteils 5 in the direction d.
- the wear part 5 has a portion whose inner surface 5f extends in accordance with the outer contour of the blade 2a, so that a gap c is formed between the blade edge 2b and the inner surface 5f.
- FIG. 6 shows the Verschleissteil 5 in a perspective view.
- the wearing part 5 comprises in each case a hollow cylindrical section 5b, 5c with a cylindrical outer contour 5g, 5h, and a conical section 5a, as well as two protruding cams 5e and two grooves 5d arranged in section 5b, only one of the grooves 5d of the section 5b being visible. Because the second groove 5b is offset by 180 degrees and therefore is arranged on invisible on the back.
- This groove 5d for example, has a constant pitch, but may also have different or variable pitches.
- the groove 5d, as in FIG. 6 shown a helically extending portion on.
- a groove 5d extending in the wear part 5 is shown in the illustrated exemplary embodiments, in which a fixedly arranged guide pin 6 engages.
- a guide device with the same effect could also be obtained by the wear part 5 having at least one guide pin 6, which engages in a groove running, for example, on the inside of the pump housing 3.
- the wear part 5 and the pump housing 3 could for example also form a common thread, in which the wear part 5 is rotatably mounted, wherein at the same time during rotation, a movement in the direction of the rotation axis 2d is performed.
- the adjusting means 7 could also comprise an electrically or mechanically driven drive device.
- pump 1 has, in contrast to the in FIG. 2 illustrated embodiment, instead of a screw 7b designed as a linear motor adjusting 7, which completely is disposed within the housing 3.
- the two adjusting means 7 can be actuated externally via an electrically conductive cable 7c.
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Abstract
Description
Die Erfindung betrifft eine Zentrifugalradpumpe gemäss dem Oberbegriff von Anspruch 1.The invention relates to a centrifugal pump according to the preamble of
Aus der Druckschrift
Die Druckschrift
Der Erfindung liegt die Aufgabe zugrunde eine Zentrifugalradpumpe zu schaffen, deren sich verschleissende Laufradkante sich geringer auf den Wirkungsrad der Pumpe auswirkt.The invention has for its object to provide a Zentrifugalradpumpe whose wearing wheel edge affects less on the Wirkungsrad the pump.
Diese Aufgabe wird gelöst mit einer Zentrifugalradpumpe aufweisend die Merkmale von Anspruch 1. Die Unteransprüche 2 bis 11 betreffen weitere, vorteilhafte Ausgestaltungen. Die Aufgabe wird weiter gelöst mit einem Verfahren aufweisend die Merkmale von Anspruch 12.This object is achieved with a Zentrifugalradpumpe having the features of
Die Aufgabe wird insbesondere gelöst mit einer Zentrifugalradpumpe umfassend ein Pumpengehäuse sowie ein darin angeordnetes Laufrad, wobei das Laufrad um eine Drehachse drehbar gelagert ist, und wobei das Laufrad zumindest eine Schaufel mit einer Schaufelkante aufweist, und wobei innerhalb des Pumpengehäuses ein die Schaufelkante derart umschliessendes, sich in Verlaufsrichtung der Drehachse erweiterndes Verschleissteil angeordnet ist, dass das Verschleissteil bezüglich der Schaufelkante einen Spalt aufweist, und wobei das Verschleissteil derart bezüglich dem Pumpengehäuse verschiebbar gelagert ist, dass eine Drehen des Verschleissteils um die Drehachse ein Verschieben des Verschleissteils in Richtung der Drehachse bewirkt, um dadurch den Spalt zwischen Schaufelkante und Verschleissteil zu verändern.The object is achieved in particular with a centrifugal wheel pump comprising a pump housing and an impeller arranged therein, wherein the impeller is rotatably mounted about an axis of rotation, and wherein the impeller has at least one blade with a blade edge, and wherein within the pump housing a the blade edge so enclosing, extending in the direction of rotation of the rotation axis wear part is arranged, that the wear part with respect to the blade edge has a gap, and wherein the wear part in such respect Pump housing is slidably mounted, that a rotation of the Verschleissteils about the rotational axis causes a displacement of the Verschleissteils in the direction of the axis of rotation, thereby changing the gap between the blade edge and the wear part.
In einer besonders vorteilhaften Ausgestaltung weist die Zentrifugalradpumpe ein Verstellmittel auf, welches von ausserhalb des Pumpengehäuses zugänglich ist, und welches ein Verdrehen des Verschleissteils erlaubt. Dies erlaubt den Spalt zwischen dem Verschleissteil und dem Laufrad von Aussen einzustellen. In einer vorteilhaften Ausgestaltung ist die Breite des Spaltes zwischen dem Verschleissteil und dem Laufrad während dem Betrieb der Zentrifugalradpumpe einstellbar.In a particularly advantageous embodiment, the Zentrifugalradpumpe on an adjustment, which is accessible from outside the pump housing, and which allows rotation of the Verschleissteils. This allows to set the gap between the wear part and the impeller from the outside. In an advantageous embodiment, the width of the gap between the Verschleissteil and the impeller during operation of the Zentrifugalradpumpe is adjustable.
Die erfindungsgemässe Zentrifugalradpumpe, umfassend das durch Drehen verstellbare Verschleissteil, kann auf unterschiedlichste Weise ausgestaltet sein, beispielsweise als Schraubenradzentrifugalradpumpe oder als Kreiselpumpe. Die Zentrifugalradpumpe kann auch ein Laufrad mit mehreren Schaufeln aufweisen. Die Zentrifugalradpumpe kann auch mehrere Laufräder aufweisen, wobei jedes Laufrad ein zugeordnetes Verschleissteil aufweist, und wobei zumindest ein Verschleissteil vorzugsweise individuell einstellbar ist.The centrifugal wheel pump according to the invention, comprising the wear part which can be adjusted by turning, can be configured in many different ways, for example as a helical centrifugal centrifugal pump or as a centrifugal pump. The Zentrifugalradpumpe may also have an impeller with a plurality of blades. The centrifugal wheel pump may also have a plurality of impellers, wherein each impeller has an associated wear part, and wherein at least one wear part is preferably individually adjustable.
In einer besonders vorteilhaften Ausgestaltung ist das Verschleissteil in einer wendelförmig verlaufenden Nut oder in einem Gewinde drehbar gelagert, sodass ein Drehen des Verschleissteils um dessen Drehachse zugleich ein Verschieben in Richtung der Drehachse bewirkt. In einer vorteilhaften Ausgestaltung ist die Steigung der Nut oder des Gewindes relativ flach ausgestaltet, um beim Drehen des Verschleissteils eine geringe Bewegung in Richtung der Drehachse zu bewirken, sodass die Spaltbreite zwischen Verschleissteil und Schaufelkante genau einstellbar ist.In a particularly advantageous embodiment, the wear part is rotatably mounted in a helically extending groove or in a thread, so that a rotation of the Verschleissteils about its axis of rotation at the same time causes a displacement in the direction of the axis of rotation. In an advantageous embodiment, the pitch of the groove or the thread is configured relatively flat to cause a slight movement in the direction of the axis of rotation when turning the Verschleissteils, so that the gap width between the wear part and the blade edge is precisely adjustable.
Die Erfindung wird nachfolgend an Hand von Ausführungsbeispielen im Detail beschrieben. Dieselben Bezugszeichen bezeichnen dieselben Gegenstände. Es zeigen:
Figur 1- einen Axialschnitt durch eine bekannte Schraubenzentrifugalradpumpe;
Figur 2- eine Seitenansicht der erfindungsgemässen Schraubenzentrifugalradpumpe mit einer Draufsicht auf die Eintrittsöffnung;
Figur 3- einen Axialschnitt durch das Gehäuse der in
dargestellten Schraubenzentrifugalradpumpe entlang der Schnittlinie A-A;Figur 2 Figur 4- einen Axialschnitt durch das Gehäuse der in
dargestellten Schraubenzentrifugalradpumpe entlang der Schnittlinie B-B;Figur 2 Figur 5- eine Detailansicht der
;Figur 4 Figur 6- eine perspektivische Ansicht eines Verschleissrings;
Figur 7- eine Seitenansicht eines weiteren Ausführungsbeispiels einer Zentrifugalradpumpe mit motorischer Verstellvorrichtung.
- FIG. 1
- an axial section through a known Schraubenzentrifugalradpumpe;
- FIG. 2
- a side view of the novel centrifugal centrifugal pump with a plan view of the inlet opening;
- FIG. 3
- an axial section through the housing of in
FIG. 2 illustrated centrifugal centrifugal pump along the section line AA; - FIG. 4
- an axial section through the housing of in
FIG. 2 illustrated centrifugal centrifugal pump along the section line BB; - FIG. 5
- a detailed view of the
FIG. 4 ; - FIG. 6
- a perspective view of a wear ring;
- FIG. 7
- a side view of another embodiment of a Zentrifugalradpumpe with motor adjustment.
Der in
In einer vorteilhaften Ausgestaltung weist das Verschleissteil 5, wie in
Um das Verschleissteil 5 durch drehen in Verlaufsrichtung der Drehachse 2d zu verschieben ist in den dargestellten Ausführungsbeispielen eine im Verschleissteil 5 verlaufende Nut 5d gezeigt, in welche ein fest angeordneter Führungsstift 6 eingreift. Eine Führungsvorrichtung mit derselben Wirkung könnte natürlich auch dadurch erhalten werden, dass das Verschleissteil 5 zumindest einen Führungsstift 6 aufweist, welcher in eine beispielsweise auf der Innenseite des Pumpengehäuses 3 verlaufende Nut eingreift. Das Verschleissteil 5 und das Pumpengehäuse 3 könnten beispielsweise auch ein gemeinsames Gewinde ausbilden, in welchem das Verschleissteil 5 drehbar gelagert ist, wobei während dem Drehen gleichzeitig eine Bewegung in Richtung der Drehachse 2d ausführt wird.In order to move the
Das Verstellmittel 7 könnte auch eine elektrisch oder mechanisch angetriebene Antriebsvorrichtung umfassen. Die in
Claims (12)
- A centrifugal impeller pump (1) including a pump housing (3) and an impeller (2) arranged therein, wherein the impeller (2) is rotatably journalled about an axis of rotation (2d), and wherein the impeller (2) has at least one vane (2a) having a vane edge (2b), wherein a wear part (5) is arranged within the pump housing (3), said wear part expanding in the direction of extent of the axis of rotation (2d) and wherein the wear part (5) has a gap (c) with respect to the vane edge (3b), characterised in that the wear part (5) surrounds the vane edge (2b); and in that the wear part (5) is displaceably journalled with respect to the pump housing (3) such that a rotation of the wear part (5) about the axis of rotation (2d) effects a displacement of the wear part (5) in the direction of the axis of rotation (2d) in order thereby to modify the gap (c) between the vane edge (2b) and the wear part (5).
- A centrifugal impeller pump (1) in accordance with claim 1, characterised in that the wear part (5) has an inner cross-section extending in conical shape.
- A centrifugal impeller pump (1) in accordance with one of the preceding claims, characterised in that the wear part (5) has a groove (5d) extending at its inner side; in that the groove (5d) has a gradient with respect to a plane extending perpendicular to the axis of rotation (2d); and in that a pin (6) anchored in the pump housing (3) projects into the groove (5d).
- A centrifugal impeller pump (1) in accordance with claim 3, characterised in that the groove (5d) extends helically.
- A centrifugal impeller pump (1) in accordance with claim 3 or claim 4, characterised in that the groove (5d) has a gradient moving away from the impeller (2) in the direction of rotation (4a).
- A centrifugal impeller pump (1) in accordance with any one of the preceding claims, characterised in that the wear part (5) has at least one cylindrically extending outer contour (5g, 5h); in that the pump housing (3) has a cylindrically extending inner contour (3g, 3h); and in that the outer contour (5g, 5h) and the inner contour (3g, 3h) are designed mutually matched to one another such that they form a seat (53a, 53b) extending in the direction of the axis of rotation (2d).
- A centrifugal impeller pump (1) in accordance with claim 6, characterised in that the wear part (5) has two cylindrically extending outer contours (5g, 5h) and the pump housing (3) has two cylindrically extending inner contours (3g, 3h) which each form a seat (53a, 53b) extending in the direction of the axis of rotation (2d); and in that the two seats (53a, 53b) are arranged spaced apart in the direction of the axis of rotation (2d).
- A centrifugal impeller pump (1) in accordance with any one of the preceding claims, characterised in that an adjustment means (7) is arranged at the pump housing (3) and acts on the wear part (5) such that the wear part can be rotated about the axis of rotation (2b) and can be fixed.
- A centrifugal impeller pump (1) in accordance with claim 8, characterised in that the adjustment means (7) is accessible from outside the pump housing (3).
- A centrifugal impeller pump (1) in accordance with claim 8 or claim 9, characterised in that the adjustment means (7) includes two adjustment screws (7b) which are journalled in a thread extending through the pump housing (3); in that the adjustment screws (7b) are arranged acting oppositely; and in that each adjustment screw (7b) has an end section (7a) and the wear part (5) has a contact point (5e) arranged matched with respect to the end section (7a) so that the end section (7a) can lie on the support point (5e).
- A centrifugal impeller pump (1) in accordance with claim 10, characterised in that the end sections (7a) of both adjustment screws (7b) contact the corresponding support point (5a) of the wear part (5) for the fixing of the position of the wear part (5).
- A method for changing the position of a wear part (5) in a centrifugal impeller pump (1) in accordance with any one of the preceding claims, characterised in that the wear part (5) is rotated in the peripheral direction with respect to the axis of rotation (2d) and is then fixed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07116609A EP1906026B1 (en) | 2006-09-22 | 2007-09-17 | Centrifugal pump |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06121159A EP1906025A1 (en) | 2006-09-22 | 2006-09-22 | Centrifugal pump |
EP07116609A EP1906026B1 (en) | 2006-09-22 | 2007-09-17 | Centrifugal pump |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1906026A1 EP1906026A1 (en) | 2008-04-02 |
EP1906026B1 true EP1906026B1 (en) | 2010-03-03 |
Family
ID=37759273
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06121159A Withdrawn EP1906025A1 (en) | 2006-09-22 | 2006-09-22 | Centrifugal pump |
EP07116609A Not-in-force EP1906026B1 (en) | 2006-09-22 | 2007-09-17 | Centrifugal pump |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06121159A Withdrawn EP1906025A1 (en) | 2006-09-22 | 2006-09-22 | Centrifugal pump |
Country Status (5)
Country | Link |
---|---|
EP (2) | EP1906025A1 (en) |
CN (1) | CN101149055B (en) |
AT (1) | ATE459803T1 (en) |
DE (1) | DE502007002982D1 (en) |
DK (1) | DK1906026T3 (en) |
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AU2009257195B2 (en) * | 2008-06-13 | 2014-01-30 | Weir Minerals Australia Ltd | Lubricant retainer for pump shaft bearing assembly |
AU2013202758B2 (en) * | 2008-06-13 | 2014-06-19 | Weir Minerals Australia Ltd | An adjustable side liner for a pump |
AU2015202357B2 (en) * | 2008-06-13 | 2017-02-02 | Weir Minerals Australia Ltd | An adjustable side liner for a pump |
DE102012023734A1 (en) * | 2012-12-05 | 2014-06-05 | Wilo Se | Centrifugal pump especially for sewage or dirty water |
EP2908012B1 (en) * | 2014-01-24 | 2019-02-27 | McFinn Technologies | Radial impeller and casing for centrifugal pump |
CN106762784A (en) * | 2016-12-06 | 2017-05-31 | 芜湖市容川机电科技股份有限公司 | Spheroidal graphite cast-iron drilling platforms high pressure cylinders |
JP7124422B2 (en) * | 2018-04-27 | 2022-08-24 | 株式会社アイシン | pump |
LU100831B1 (en) * | 2018-06-12 | 2019-12-12 | Wilo Se | Centrifugal pump with a pump housing |
CN110594163A (en) * | 2019-10-21 | 2019-12-20 | 海斯特(青岛)泵业有限公司 | Water pump with forced feeding mechanism |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB215961A (en) * | 1923-05-16 | 1924-05-22 | W H Allen Sons & Company Ltd | Improvements in centrifugal pumps |
FR2134063B1 (en) * | 1972-04-28 | 1974-11-08 | Materiel Processing Internatio | |
FR2290133A6 (en) * | 1973-02-09 | 1976-05-28 | Materiel Processing Internal | Centrifugal pump with sealing plate - has inner part of plate movable in axial direction of impeller |
CH611389A5 (en) * | 1975-10-02 | 1979-05-31 | Martin Staehle | Centrifugal pump for delivering viscous, especially solids-containing media |
US4037985A (en) * | 1976-05-20 | 1977-07-26 | Worthington Pump, Inc. | Flushing liquid system for the wearing ring in centrifugal pumps and the wearing ring assembly and wearing ring for use therein |
FR2681906B1 (en) * | 1991-09-27 | 1995-01-20 | Renault Vehicules Ind | CENTRIFUGAL PUMP FOR COMBUSTION ENGINE COOLING LIQUID CIRCUIT. |
DE29608236U1 (en) * | 1996-05-07 | 1996-08-01 | Kleindienst, Uwe, 23611 Bad Schwartau | Centrifugal pump |
CN2606202Y (en) * | 2003-03-10 | 2004-03-10 | 宜兴市宙斯泵业有限公司 | Improved two-stage centrifugal pumps |
CN2802133Y (en) * | 2005-07-05 | 2006-08-02 | 宜兴市宙斯泵业有限公司 | Corrision-resisting, wear-resisting front cover of centrifugal pump |
-
2006
- 2006-09-22 EP EP06121159A patent/EP1906025A1/en not_active Withdrawn
-
2007
- 2007-08-29 CN CN2007101480311A patent/CN101149055B/en not_active Expired - Fee Related
- 2007-09-17 AT AT07116609T patent/ATE459803T1/en active
- 2007-09-17 EP EP07116609A patent/EP1906026B1/en not_active Not-in-force
- 2007-09-17 DE DE502007002982T patent/DE502007002982D1/en active Active
- 2007-09-17 DK DK07116609.4T patent/DK1906026T3/en active
Also Published As
Publication number | Publication date |
---|---|
ATE459803T1 (en) | 2010-03-15 |
EP1906025A1 (en) | 2008-04-02 |
CN101149055B (en) | 2010-11-17 |
DK1906026T3 (en) | 2010-05-31 |
DE502007002982D1 (en) | 2010-04-15 |
EP1906026A1 (en) | 2008-04-02 |
CN101149055A (en) | 2008-03-26 |
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