Patents by Inventor Wen-Jie Liu
Wen-Jie Liu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9771949Abstract: 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: GrantFiled: December 19, 2012Date of Patent: September 26, 2017Assignee: Weir Minerals Australia LTDInventors: Wen-Jie Liu, Nathan Reid
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Publication number: 20170169547Abstract: A color image processing system includes an image capture module, an image digitizing module, an optimizing ratio calculation module and an image processing module. The image capture module captures an original color image. The image digitizing module digitizes the original color image to obtain N pixels in ascending order according to value of RGB of the pixel. The optimizing ratio calculation module calculates an optimizing ratio H. The image processing module multiplies original value of RGB of the pixel before the ((N?N*H)/2)th pixel by 1/H to obtain new value of RGB of the pixel before the ((N?N*H)/2)th pixel and multiplies original value of RGB of the pixel after the ((N+N*H)/2?1)th pixel by H to obtain new value of RGB of the pixel after the ((N+N*H)/2?1)th pixel. A color image processing method is also provided.Type: ApplicationFiled: December 21, 2015Publication date: June 15, 2017Inventors: WEN-JIE LIU, CHUN-QIN WANG, LEI WANG
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Patent number: 9665928Abstract: A color image processing system includes an image capture module, an image digitizing module, an optimizing ratio calculation module and an image processing module. The image capture module captures an original color image. The image digitizing module digitizes the original color image to obtain N pixels in ascending order according to value of RGB of the pixel. The optimizing ratio calculation module calculates an optimizing ratio H. The image processing module multiplies original value of RGB of the pixel before the ((N?N*H)/2)th pixel by 1/H to obtain new value of RGB of the pixel before the ((N?N*H)/2)th pixel and multiplies original value of RGB of the pixel after the ((N+N*H)/2?1)th pixel by H to obtain new value of RGB of the pixel after the ((N+N*H)/2?1)th pixel. A color image processing method is also provided.Type: GrantFiled: December 21, 2015Date of Patent: May 30, 2017Assignees: AMBIT MICROSYSTEMS (SHANGHAI) LTD., HON HAI PRECISION INDUSTRY CO., LTD.Inventors: Wen-Jie Liu, Chun-Qin Wang, Lei Wang
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Patent number: 9651055Abstract: A slurry pump impeller which includes a front shroud and a back shroud each having an inner main face with an outer peripheral edge and a central axis, a plurality of pumping vanes extending between the inner main faces of the shrouds, the pumping vanes being disposed in spaced apart relation. Each pumping vane includes a leading edge in the region of the central axis and a trailing edge in the region of the outer peripheral edges of the shrouds with a passageway between adjacent pumping vanes. Each passageway has associated therewith a discharge guide vane, each discharge guide vane being disposed within a respective passageway and located closer to one or the other of the pumping vanes and projecting from the inner main face of at least one of the or each shrouds.Type: GrantFiled: August 19, 2013Date of Patent: May 16, 2017Assignee: Weir Minerals Australia Ltd.Inventors: Kevin Edward Burgess, Wen-Jie Liu, Luis Moscoso Lavagna, Garry Bruce Glaves
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Patent number: 9422938Abstract: 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: April 10, 2015Date of Patent: August 23, 2016Assignee: Weir Minerals Australia Ltd.Inventors: Kevin Edward Burgess, Wen-Jie Liu, Luis Moscoso Lavagna
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Publication number: 20150337864Abstract: 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: June 15, 2015Publication date: November 26, 2015Inventors: Kevin Edward Burgess, Wen-Jie Liu, Luis Moscoso Lavagna, Garry Bruce Glaves
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Publication number: 20150211522Abstract: 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: April 10, 2015Publication date: July 30, 2015Inventors: Kevin Edward Burgess, Wen-Jie Liu, Luis Moscoso Lavagna
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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: 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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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: 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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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: 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
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Publication number: 20140044545Abstract: A slurry pump impeller which includes a front shroud and a back shroud each having an inner main face with an outer peripheral edge and a central axis, a plurality of pumping vanes extending between the inner main faces of the shrouds, the pumping vanes being disposed in spaced apart relation. Each pumping vane includes a leading edge in the region of the central axis and a trailing edge in the region of the outer peripheral edges of the shrouds with a passageway between adjacent pumping vanes. Each passageway has associated therewith a discharge guide vane, each discharge guide vane being disposed within a respective passageway and located closer to one or the other of the pumping vanes and projecting from the inner main face of at least one of the or each shrouds.Type: ApplicationFiled: August 19, 2013Publication date: February 13, 2014Applicant: Weir Minerals Australia, Ltd.Inventors: Kevin Edward Burgess, Wen-Jie Liu, Luis Moscoso Lavagna, Garry Bruce Glaves
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Patent number: 8608445Abstract: 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: May 27, 2009Date of Patent: December 17, 2013Assignee: Weir Minerals Australia, Ltd.Inventors: Kevin Edward Burgess, Wen-Jie Liu, Luis Moscoso Lavagna
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Patent number: 8511998Abstract: A slurry pump impeller which includes a front shroud and a back shroud each having an inner main face with an outer peripheral edge and a central axis, a plurality of pumping vanes extending between the inner main faces of the shrouds, the pumping vanes being disposed in spaced apart relation. Each pumping vane includes a leading edge in the region of the central axis and a trailing edge in the region of the outer peripheral edges of the shrouds with a passageway between adjacent pumping vanes. Each passageway has associated therewith a discharge guide vane, each discharge guide vane being disposed within a respective passageway and located closer to one or the other of the pumping vanes and projecting from the inner main face of at least one of the or each shrouds.Type: GrantFiled: May 27, 2009Date of Patent: August 20, 2013Assignee: Weir Minerals Australia Ltd.Inventors: Kevin Edward Burgess, Wen-Jie Liu, Luis Moscoso Lavagna, Garry Bruce Glaves
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Publication number: 20110158795Abstract: 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: May 27, 2009Publication date: June 30, 2011Inventors: Kevin Edward Burgess, Wen-Jie Liu, Luis Moscoso Lavagna
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Publication number: 20110142610Abstract: 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 recircula tion 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: June 5, 2009Publication date: June 16, 2011Inventors: Kevin Edward Burgess, Wen-Jie Liu, Luis Moscoso Lavagna, Garry Bruce Glaves
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Publication number: 20110129344Abstract: A slurry pump impeller which includes a front shroud and a back shroud each having an inner main face with an outer peripheral edge and a central axis, a plurality of pumping vanes extending between the inner main faces of the shrouds, the pumping vanes being disposed in spaced apart relation. Each pumping vane includes a leading edge in the region of the central axis and a trailing edge in the region of the outer peripheral edges of the shrouds with a passageway between adjacent pumping vanes. Each passageway has associated therewith a discharge guide vane, each discharge guide vane being disposed within a respective passageway and located closer to one or the other of the pumping vanes and projecting from the inner main face of at least one of the or each shrouds.Type: ApplicationFiled: May 27, 2009Publication date: June 2, 2011Inventors: Kevin Edward Burgess, Wen-Jie Liu, Luis Moscoso Lavagna, Garry Bruce Glaves
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Patent number: D631065Type: GrantFiled: October 23, 2009Date of Patent: January 18, 2011Assignee: Weir Minerals Australia, Ltd.Inventors: Kevin Edward Burgess, Garry Bruce Glaves, Wen-Jie Liu