Patents Assigned to Sulzer Pumpen AG
  • Patent number: 10082149
    Abstract: Disclosed is a pump having a pump rotor rotatably supported about an axis of rotation in a pump stator. In this respect, the pump rotor is designed and is arranged above a rotor shaft in a shaft bearing such that a lubricating film of a lubricating fluid formed from the pump fluid can be formed in a lubricating ring gap between the rotor shaft and the shaft bearing. In accordance with the invention, a separation device is provided at the rotor shaft by which a predefinable quantity of the ingredient can be separated from the pump fluid by means of a centrifugal force in the operating state for providing the lubricating fluid.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: September 25, 2018
    Assignee: Sulzer Pumpen AG
    Inventors: Paul Meuter, Thomas Welschinger
  • Patent number: 9353763
    Abstract: The present invention relates to a centrifugal pump, a shaft sleeve and a stationary seal member for a static seal used in connection with a dynamic sealing of a centrifugal pump. The invention relates to a static seal the clearance of which may be adjusted while the pump is running. Especially the invention discusses the novel structure of such a static seal.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: May 31, 2016
    Assignee: Sulzer Pumpen AG
    Inventors: Jorma Tapani Lehtonen, Heikki Manninen
  • Publication number: 20150285251
    Abstract: A pump including an outer housing having an outlet chamber with an outlet connector, and including a first part pump and a second part pump connected thereafter, with the first and second part pumps being arranged in the outer housing, a separating element which can be arranged between the first and second part pumps and a rotor shaft which is rotatably arranged in the first and second part pumps. In accordance with the invention, the outer housing, the first part pump and the separating element bound a first pressure chamber and the outer housing, the second part pump and the separating element bound a second pressure chamber and the first and second pressure chambers are designed and arranged such that the outlet chamber is formed as a single high-pressure region of the pump.
    Type: Application
    Filed: April 4, 2014
    Publication date: October 8, 2015
    Applicant: Sulzer Pumpen AG
    Inventors: Thomas Welschinger, Marcelo Inforsati
  • Publication number: 20150240818
    Abstract: An impeller for a pump for conveying waste water is proposed having a support body (32) which can be rotated about an axis of rotation (A and on which two blades (31) for conveying are provided, wherein the blades (31) each have an inlet region (311) which extends from an inlet edge (310) up to an apex (S), wherein the wall thickness (31) increases at its end side (350) remote from the support body (32) in the inlet region (311)) from the inlet edge (310) and reaches its maximum value at the apex (S), wherein the blade (31) converges in the inlet region (311) in an axial direction from the support body (32) to the end side (350) with respect to the wall thickness. A base plate is furthermore proposed for interaction with such an impeller as well as a pump for conveying waste water.
    Type: Application
    Filed: August 21, 2013
    Publication date: August 27, 2015
    Applicant: Sulzer Pumpen AG
    Inventors: Kais Haddad, Horst-Paul Klein
  • Patent number: 9062686
    Abstract: A sealing arrangement for a rotating shaft, which is in particular designed as a drive shaft of a pump, has a stationary seal holder in which a first and a second slide ring seal are supported. The slide ring seals each have a co-rotating rotary seal part and a stationary seal part. A sealing space is formed between the slide ring seals and the seal holder to which sealing fluid can be supplied via a feed line. In order to enable good rotor dynamics of the shaft with the seal arrangement, a bearing is arranged between the first and the second slide ring seals by means of which the shaft can be supported with respect to the seal holder.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: June 23, 2015
    Assignee: Sulzer Pumpen AG
    Inventor: Paul Meuter
  • Publication number: 20150159669
    Abstract: The invention relates to a sealing arrangement for a high-pressure space having a bounding element and a termination element. The bounding element has an outer sealing surface and the termination element has an inner sealing surface. The outer sealing surface and the inner sealing surface are arranged such that a sealing-off of the high-pressure space is achieved via a contact of the two sealing surfaces. In accordance with the invention the bounding element is designed such that a force in the direction of the inner sealing surface can act on the outer sealing surface due to a pressure in the high-pressure space. Thereby a sealing function is also achieved then when the termination element deforms due to the pressure in the high-pressure space. The sealing arrangement in accordance with the invention can be used particularly advantageously in pumps.
    Type: Application
    Filed: November 1, 2012
    Publication date: June 11, 2015
    Applicant: Sulzer Pumpen AG
    Inventors: Paul Meuter, Thomas Welschinger
  • Patent number: 8939720
    Abstract: A volute shaped pump casing (1) for a centrifugal pump includes a chamber for housing at least one impeller (4) mounted on a shaft (2) for rotating the impeller around an axis of rotation (2a), a volute shaped chamber which forms a flow channel divided into a first volute (5.1) and a second volute (5.2), and a first channel (6.1) and a second channel (6.2) connected to the first and the second volute respectively. The first channel is also called long channel and the second channel is also called short channel. In the volute shaped pump casing (1), the first or long channel (6.1) is axially displaced with respect to the second or short channel (6.2) and/or with respect to the second volute (5.2).
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: January 27, 2015
    Assignee: Sulzer Pumpen AG
    Inventor: Arnaldo Rodrigues
  • Publication number: 20140313852
    Abstract: Disclosed is an agitator having a drive unit coupled by means of a coupling to a first end of a drive shaft, a propeller attached to a second end of the drive shaft, the drive unit being attached to a mounting flange adapted for fastening the agitator to a wall of a mixing vessel, the agitator further comprising a support housing having at least a tubular support frame with a first end and a second end, the first end of the tubular support frame being attached to the mounting flange, the second end of the tubular support frame being provided with a support bearing for supporting the second end of the drive shaft, wherein a shaft seal is arranged at the first end of the tubular support frame and sealing means is arranged in connection with the second end of both the drive shaft and the tubular support frame.
    Type: Application
    Filed: April 4, 2014
    Publication date: October 23, 2014
    Applicant: Sulzer Pumpen AG
    Inventor: Ottelin Juha
  • Publication number: 20140314599
    Abstract: The present invention relates to a novel bearing arrangement for a centrifugal pump. The bearing arrangement comprises a thrust bearing (50) arranged closer to the end (42?) of the shaft (42) carrying the rotor (44), the thrust bearing (50) being selectable between a four-point contact ball bearing for heavy-duty applications and a single row contact ball bearing for light-duty applications.
    Type: Application
    Filed: April 18, 2014
    Publication date: October 23, 2014
    Applicant: Sulzer Pumpen AG
    Inventor: Heikki Manninen
  • Patent number: 8858154
    Abstract: A pump system (1) is provided for the pumping of multiphase mixtures which includes a pumping apparatus (3) for multiphase mixtures with at least one liquid phase and at least one gaseous phase. The pumping apparatus (3) contains one or more axial compression stages with one respective axial impeller each and one or more pumping stages with a respective one radial impeller each which are arranged adjoining the axial compression stage or stages, wherein the pump system (1) additionally includes a separator (2) at the inlet side of the pumping apparatus (3) to separate a portion of the gaseous phase and wherein the pumping apparatus (3) is configured for delivery heads larger than 50 m.
    Type: Grant
    Filed: February 14, 2008
    Date of Patent: October 14, 2014
    Assignee: Sulzer Pumpen AG
    Inventor: Johann Guelich
  • Patent number: 8858157
    Abstract: A centrifugal pump (1, 110) includes an apparatus for the removal of particles, wherein the centrifugal pump includes an impeller (6, 106). A fluid (2, 102) can be conveyed by means of the impeller (6, 106) through a suction passage (5, 105) from a suction stub (3, 103) to a pressure stub (4, 104). The impeller (6, 106) is rotatable in a stator (7, 107). A gap (9, 19, 109) is arranged between the stator (7, 107) and the impeller (6, 106), wherein the gap (9, 19, 109) opens into a storage space (11, 21, 111) for particles. The storage space (11, 21, 111) communicates with the suction passage (5, 105) via a return line (12, 112) running through the stator (7, 107).
    Type: Grant
    Filed: December 21, 2009
    Date of Patent: October 14, 2014
    Assignee: Sulzer Pumpen AG
    Inventors: Thomas Welschinger, Antonio Morisco, Nicolas Martin
  • Publication number: 20140241870
    Abstract: Disclosed are a diffuser and a pump including a feed column extending around a diffusor axis of the pump and having a rotor housing which is arranged between an intake and a diffusor arranged in a diffusor section. During operation, fluid is sucked by the pump rotor via the intake, and is discharged from the feed column via the diffusor section, the feed tube and the outlet stub. The diffusor includes an inlet section arranged between an outlet section and the pump rotor, wherein a first part section adjacent to the inlet section is formed at the outlet section, the first part section is inclined with respect to the diffusor axis at a first angle (?). A second part section adjoining the first part section is inclined with respect to the diffusor axis at a second angle (?) different from the first outlet angle (?).
    Type: Application
    Filed: February 20, 2014
    Publication date: August 28, 2014
    Applicant: Sulzer Pumpen AG
    Inventor: Adalberto Dominguez
  • Publication number: 20140205477
    Abstract: The present invention relates to a centrifugal pump, especially to a close coupled centrifugal pump. The centrifugal pump (10) comprises a shaft (18) coupled with the shaft (20) of the electric drive motor by means of a separate threaded coupling sleeve (24). The threaded coupling sleeve (24) is coupled with the shaft (20) of the drive motor by means of a key (34) and an adjusting nut (26).
    Type: Application
    Filed: January 22, 2014
    Publication date: July 24, 2014
    Applicant: Sulzer Pumpen AG
    Inventor: Janne Ripattila
  • Publication number: 20140157873
    Abstract: Disclosed is a testing apparatus for an outer housing of a pump, wherein the testing apparatus includes a separation element; a first and a second closure element, wherein the first and second closure element respectively close an axial end of the outer housing in a sealing manner; a middle pressure line which is arranged in the first or the second closure element; and a bounding element, wherein the bounding element closes the outlet outside of the outer housing, and wherein a high pressure line is arranged in the bounding element. The separation element is configured and arranged in the outer housing such that the separation element bounds the outlet of the outer housing and the outer housing is divided into a first pressure region and a second pressure region, wherein the first pressure region and the second pressure region are configured as pressure regions independent from one another.
    Type: Application
    Filed: December 5, 2013
    Publication date: June 12, 2014
    Applicant: Sulzer Pumpen AG
    Inventors: Paul MEUTER, Thomas WELSCHINGER, Marcelo INFORSATI
  • Publication number: 20140079558
    Abstract: The present invention relates to a centrifugal pump, the impeller of which comprises a shroud (34) with at least one solid and rigid working vane (36), and at least one solid and rigid rear vane (38), the at least one working vane (36) having a leading edge region (46), a trailing edge region (48), a central region (C), a side edge, a pressure face (42) and a suction face (44), the at least one solid and rigid rear vane (38) having a trailing edge region, a side edge, a pressure face and a suction face. The trailing edge region (48) of the at least one working vane (36) is rounded by means of a rounding to have a thickness greater than that in the central region (C).
    Type: Application
    Filed: September 19, 2013
    Publication date: March 20, 2014
    Applicant: Sulzer Pumpen AG
    Inventors: Matti KOIVIKKO, Kalle TIITINEN, Sami VIRTANEN
  • Publication number: 20130315518
    Abstract: A bearing pad, including a pad body (11) and a tilting element (12), for a support body (2) of a bearing arrangement (3) for taking up an axial thrust, characterized in that the tilting element (12) is provided in an elongated recess (111) of the pad body (11) extending in a radial direction such that a contact body (121) of the tilting element (12) extending in the direction of the recess (111) projecting beyond a surface of the pad body (11) and the pad body (11) has a higher deformability than the tilting element (12).
    Type: Application
    Filed: April 18, 2013
    Publication date: November 28, 2013
    Applicant: Sulzer Pumpen AG
    Inventors: Simon Gassmann, Paul Meuter, Thomas Felix
  • Patent number: D696705
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: December 31, 2013
    Assignee: Sulzer Pumpen AG
    Inventors: Mark Kehoe, Andrejas Vukovic
  • Patent number: D697101
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: January 7, 2014
    Assignee: Sulzer Pumpen AG
    Inventors: Mark Kehoe, Andrejas Vukovic
  • Patent number: D699763
    Type: Grant
    Filed: April 5, 2013
    Date of Patent: February 18, 2014
    Assignee: Sulzer Pumpen AG
    Inventors: Gary Fitch, Neil Hoekstra
  • Patent number: D705286
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: May 20, 2014
    Assignee: Sulzer Pumpen AG
    Inventors: Mark Kehoe, Andrejas Vukovic