Patents Assigned to Weir Minerals Australia Ltd.
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Patent number: 9222484Abstract: A pump casing having a casing body is configured with a discharge formed in the casing body where a midline of the discharge is offset from a tangent line of the casing body and offset from a centerline of the casing body, such that the midline of the discharge is located along a point between the defined centerline and defined tangent line of the casing body.Type: GrantFiled: April 26, 2013Date of Patent: December 29, 2015Assignee: Weir Minerals Australia, Ltd.Inventor: Thomas E. Stirling
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Patent number: 9057385Abstract: A pump casing for a centrifugal pump, which comprises an inlet opening, a discharge outlet, and a transition surface extending between an inner peripheral surface of the main pumping chamber and an inner peripheral surface of the discharge outlet, the transition surface arranged for separating an in use exit flow of material in the discharge outlet from an in use recirculation flow of material in the main pumping chamber. The transition surface has a cutwater having a profiled section which comprises a protrusion which extends irregularly from an otherwise generally rounded arched or U-shaped transition surface and is configured such that, in use, the velocity and/or turbulence resulting from the in use flow of the material being pumped in the main pumping chamber is reduced.Type: GrantFiled: May 28, 2014Date of Patent: June 16, 2015Assignee: Weir Minerals Australia Ltd.Inventors: Kevin Edward Burgess, Wen-Jie Liu, Luis Moscoso Lavagna, Garry Bruce Glaves
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Patent number: 9028203Abstract: An air diffuser device suitable for use in an air diffuser system for a centrifugal pump the pump including a pump casing with a pumping chamber therein, an impeller mounted within the pumping chamber for rotation about a rotation axis, the impeller including a front side and a rear side. The air diffuser system comprises one or more passages extending through the impeller from the front side to the rear side, the or each passage having a first opening at the rear side and a second opening at the front side of the impeller.Type: GrantFiled: June 3, 2013Date of Patent: May 12, 2015Assignee: Weir Minerals Australia Ltd.Inventors: Kevin Edward Burgess, Michael Christopher Foreman
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Patent number: 9004869Abstract: A centrifugal pump impeller includes front and back shrouds and a plurality of pumping vanes therebetween, each pumping vane having a leading edge in the region of an impeller inlet and a trailing edge, the front shroud has an arcuate inner face in the region of the impeller inlet, the arcuate inner face having a radius of curvature (Rs) in the range from 0.05 to 0.16 of the outer diameter of the impeller (D2) The back shroud includes an inner main face and a nose having a curved profile with a nose apex in the region of the central axis which extends towards the front shroud, there being a curved transition region between the inner main face and the nose. Fr is the radius of curvature of the transition region and the ratio Fr/D2 is from 0.32 to 0.65. Other ratios of various dimensions of the impeller are also described.Type: GrantFiled: December 13, 2013Date of Patent: April 14, 2015Assignee: Weir Minerals Australia, Ltd.Inventors: Kevin Edward Burgess, Wen-Jie Liu, Luis Moscoso Lavagna
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Patent number: 8967874Abstract: A lubricant retainer for use in a pump bearing assembly, the bearing assembly which in a first operating configuration is lubricated by a relatively highly viscous lubricant, and which in a second operating configuration is lubricated by a less-viscous lubricant, the bearing assembly comprising a bearing housing having a bore extending therethrough for receiving a pump drive shaft, spaced-apart bearing mounting zones within said bore with a chamber therebetween, each bearing mounting zone arranged for the in use receipt of a bearing therein. Each zone has associated therewith one lubricant retainer, the lubricant retainer being adapted to be mounted within the bore adjacent the bearing mounting zone with which it is associated so as to form a barrier between the bearing mounting zone and the chamber when the pump bearing assembly is in the first operating configuration, the retainer being removed when the pump bearing assembly is in the second operating configuration.Type: GrantFiled: June 12, 2009Date of Patent: March 3, 2015Assignee: Weir Minerals Australia Ltd.Inventors: Kevin Edward Burgess, Michael Christopher Foreman
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Patent number: 8967953Abstract: A coupling pin for use in a pump housing, the pump housing including an outer casing and an inner pump liner, the coupling pin being suitable for locating the liner and casing relative to one another, the coupling pin including a shank and a head at one end of the shank. The head includes a cammed surface thereon which is adapted to co-operate with a follower on the liner, and a locating section on a remote or terminal end of the head which is adapted to be positioned against a seat in the outer casing when fitted. The arrangement is such that rotation of the coupling pin causes the follower to track along the cammed surface so as to cause relative movement between the outer casing and the inner pump liner.Type: GrantFiled: June 12, 2009Date of Patent: March 3, 2015Assignee: Weir Minerals Australia Ltd.Inventors: Garry Bruce Glaves, Michael Christopher Foreman
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Publication number: 20140369817Abstract: Guards for rotary pumps are described, the pump having a main body and further including an impeller housing and a driveshaft extending between the main body of the pump and the impeller housing; the pump further including an adjustable sealing arrangement provided at a region where the driveshaft enters the impeller housing, the guard provides access to adjust the sealing arrangement but obstructs access to the driveshaft.Type: ApplicationFiled: December 19, 2012Publication date: December 18, 2014Applicant: WEIR MINERALS AUSTRALIA LTDInventors: Wen-Jie Liu, Nathan Reid
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Publication number: 20140341705Abstract: An adjustment assembly for pump casing of a pump, the pump casing including a main part and a side part having a main axis and a side wall section extending laterally with respect to the main axis. The adjustment assembly is operable to cause relative displacement between the side part and the main part of the pump casing. The adjustment assembly includes a drive device and an actuator which can be activated externally of the pump, the drive device being operable to cause the relative displacement of the side part in response to activation of said actuator, the relative displacement capable of being a combination of axial and rotational movement.Type: ApplicationFiled: April 17, 2014Publication date: November 20, 2014Applicant: Weir Minerals Australia, Ltd.Inventors: Kevin Edward Burgess, Michael Christopher Foreman
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Publication number: 20140332095Abstract: Pump apparatus comprising a base or chassis, a power unit and a reel assembly each operatively mounted to the base or chassis, a flexible conveyor conduit and flexible service line adapted to be payed out from the reel assembly and a work head including a pump operatively connected to the conveyor conduit. The work head comprises a pump having an outlet which is operatively connected to a conveying conduit, a support frame to which the pump is mounted and a powered traction drive assembly operatively mounted to the support frame. The reel assembly comprises a reel rotatably mounted to the base or chassis, a conveying conduit and a flexible service line, each being adapted to be wound thereon and payed out therefrom.Type: ApplicationFiled: December 6, 2012Publication date: November 13, 2014Applicant: WEIR MINERALS AUSTRALIA LTD.Inventors: Peter Smit, Robert Tumer, Reman Murandi, Kevin Brighton
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Publication number: 20140331466Abstract: A lifter bar assembly for a crushing mill is disclosed including: a plurality of lifter bar segments; the segments being arranged to be installed adjacent to one another to form a lifter bar; wherein each of the segments are of a weight which can be safely handled by a team of two people.Type: ApplicationFiled: May 28, 2014Publication date: November 13, 2014Applicant: Weir Minerals Australia Ltd.Inventors: Terry Cox, Daniel Watt, Graeme Hazell
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Publication number: 20140271159Abstract: A pump casing for a centrifugal pump, which comprises an inlet opening, a discharge outlet, and a transition surface extending between an inner peripheral surface of the main pumping chamber and an inner peripheral surface of the discharge outlet, the transition surface arranged for separating an in use exit flow of material in the discharge outlet from an in use recirculation flow of material in the main pumping chamber. The transition surface has a cutwater having a profiled section which comprises a protrusion which extends irregularly from an otherwise generally rounded arched or U-shaped transition surface and is configured such that, in use, the velocity and/or turbulence resulting from the in use flow of the material being pumped in the main pumping chamber is reduced.Type: ApplicationFiled: May 28, 2014Publication date: September 18, 2014Applicant: Weir Minerals Australia Ltd.Inventors: Kevin Edward Burgess, Wen-Jie Liu, Luis Moscoso Lavagna, Garry Bruce Glaves
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Publication number: 20140271256Abstract: A roving submersible pump arrangement for movement in a body of fluid is presented. The pump arrangement includes a submersible pump having an inlet and a discharge outlet and a buoyant transport device connected to the submersible pump. The buoyant transport device is operable to position the inlet of the submersible pump at a selected distance from a surface containing the body of fluid.Type: ApplicationFiled: March 14, 2014Publication date: September 18, 2014Applicant: WEIR MINERALS AUSTRALIA, LTD.Inventors: Gary Saylor, Friedrich Bradner
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Publication number: 20140241888Abstract: A pump side part for use with a shrouded pump impeller, comprising a side wall section rear face including an outer region with an outer edge in a plane which is substantially at right angles to the rotation axis, an inner region with an inner edge and an intermediate region between the outer and inner regions which is inclined inwardly from the said plane in a direction towards the inlet section, the inner region extending from the intermediate region in a direction away from the front face of the side wall section, wherein the outer face of the impeller front shroud and the side part rear face are arranged to be facing one another with a gap therebetween, the rear face being configured so that the cross-sectional dimension of the gap increases in a direction toward the impeller rotation axis in the intermediate region.Type: ApplicationFiled: July 20, 2012Publication date: August 28, 2014Applicant: Weir Minerals Australia, Ltd.Inventors: Luis Moscoso Lavagna, Garry Bruce Glaves
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Patent number: 8790077Abstract: An adjustment assembly for pump casing of a pump, the pump casing including a main part and a side part having a main axis and a side wall section extending laterally with respect to the main axis. The adjustment assembly is operable to cause relative displacement between the side part and the main part of the pump casing. The adjustment assembly includes a drive device and an actuator which can be activated externally of the pump, the drive device being operable to cause the relative displacement of the side part in response to activation of said actuator, the relative displacement capable of being a combination of axial and rotational movement.Type: GrantFiled: June 12, 2009Date of Patent: July 29, 2014Assignee: Weir Minerals Australia Ltd.Inventors: Kevin Edward Burgess, Michael Christopher Foreman
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Publication number: 20140203468Abstract: The present disclosure pertains to resins/filler composites that are formed via a resin infusion process. Certain embodiments are directed to methods and systems that may be used to produce a moulded composite article. An exemplary method comprising: a) filling to a predetermined level a mould tool with particles; b) infusing a resin composition into the mould tool filled with the particles in order to form a composite; c) vibrating the mould tool for a portion of time at one or more of the following stages: during the filling with the particles, after the filling with particles, during the infusing of the resin composition and after the infusions of the resin composition; wherein the composite comprises between 10% to 50% by weight of the resin composition and between 50% to 90% by weight of the particles; and d) curing the composite to form a moulded composite article.Type: ApplicationFiled: January 25, 2013Publication date: July 24, 2014Applicant: WEIR MINERALS AUSTRALIA LTDInventors: Edward Humphries, Geoff Germon
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Publication number: 20140167364Abstract: A housing for a seal assembly of a pump, the housing comprising a main body having a wall section with inner and outer sides, and a bore extending through the main body between the inner and outer sides, a holder protruding from the inner side of the main body, the holder having an outer edge and a bearing face which is inclined inwardly towards the inner side, and extending from the outer edge towards the bore. There is also disclosed a lifting device for use with the housing.Type: ApplicationFiled: February 24, 2014Publication date: June 19, 2014Applicant: Weir Minerals Australia Ltd.Inventor: Michael Christopher Foreman
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Patent number: 8746601Abstract: A lifter bar assembly for a crushing mill is disclosed including: a plurality of lifter bar segments; the segments being arranged to be installed adjacent to one another to form a lifter bar; wherein each of the segments are of a weight which can be safely handled by a team of two people.Type: GrantFiled: March 30, 2009Date of Patent: June 10, 2014Assignee: Weir Minerals Australia, Ltd.Inventors: Terry Cox, Daniel Watt, Graeme Hazell
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Patent number: 8747062Abstract: A pump casing for a centrifugal pump, which comprises an inlet opening, a discharge outlet, and a transition surface extending between an inner peripheral surface of the main pumping chamber and an inner peripheral surface of the discharge outlet, the transition surface arranged for separating an in use exit flow of material in the discharge outlet from an in use recirculation flow of material in the main pumping chamber. The transition surface has a cutwater having a profiled section which comprises a protrusion which extends irregularly from an otherwise generally rounded arched or U-shaped transition surface and is configured such that, in use, the velocity and/or turbulence resulting from the in use flow of the material being pumped in the main pumping chamber is reduced.Type: GrantFiled: June 5, 2009Date of Patent: June 10, 2014Assignee: Weir Minerals Australia Ltd.Inventors: Kevin Edward Burgess, Wen-Jie Liu, Luis Moscoso Lavagna, Garry Bruce Glaves
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Publication number: 20140112755Abstract: A pump assembly and components therefor including an impeller which has flow inducer elements on an inner surface of a front shroud thereof, a flow directing device or strainer having passageways for delivering material to the impeller and at least one flow circulating passageway and a pump casing having an intake section with flow distribution vanes in the region of a feed opening adjacent the intake section.Type: ApplicationFiled: December 31, 2013Publication date: April 24, 2014Applicant: Weir Minerals Australia Ltd.Inventors: Kevin Edward Burgess, Garth Norman Cantrill
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Publication number: 20140105747Abstract: A centrifugal pump impeller includes front and back shrouds and a plurality of pumping vanes therebetween, each pumping vane having a leading edge in the region of an impeller inlet and a trailing edge, the front shroud has an arcuate inner face in the region of the impeller inlet, the arcuate inner face having a radius of curvature (Rs) in the range from 0.05 to 0.16 of the outer diameter of the impeller (D2) The back shroud includes an inner main face and a nose having a curved profile with a nose apex in the region of the central axis which extends towards the front shroud, there being a curved transition region between the inner main face and the nose. Fr is the radius of curvature of the transition region and the ratio Fr/D2 is from 0.32 to 0.65. Other ratios of various dimensions of the impeller are also described.Type: ApplicationFiled: December 13, 2013Publication date: April 17, 2014Applicant: Weir Minerals Australia, Ltd.Inventors: Kevin Edward Burgess, Wen-Jie Liu, Luis Moscoso Lavagna