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公开(公告)号：US09651055B2
公开(公告)日：2017-05-16
申请号：US13970443
申请日：2013-08-19
IPC分类号： F04D29/22
CPC分类号： F04D29/2288 , Y10T29/49318 , Y10T29/4973
摘要： 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.
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公开(公告)号：US09771949B2
公开(公告)日：2017-09-26
申请号：US14365246
申请日：2012-12-19
发明人： Wen-Jie Liu , Nathan Reid
CPC分类号： F04D29/406 , F04D13/02 , F04D15/0077 , F04D29/086 , F04D29/106 , F04D29/605 , F05D2230/80 , F16P1/02 , Y10T29/49238
摘要： 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.
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公开(公告)号：US20140271159A1
公开(公告)日：2014-09-18
申请号：US14289553
申请日：2014-05-28
CPC分类号： F04D29/669 , F04D1/00 , F04D7/04 , F04D29/22 , F04D29/428 , F04D29/4286 , F04D29/628 , Y10T29/4933
摘要： 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.
摘要翻译： 一种用于离心泵的泵壳体，其包括入口，排出口和在主泵送室的内周表面之间延伸的过渡表面和排出口的内周表面之间的过渡表面， 在使用中从主泵送室中的材料的使用中再循环流出口排出出口中的材料。 过渡表面具有切割水，其具有成型部分，该成形部分包括从另外通常为圆形的拱形或U形过渡表面不规则地延伸的突出部，并且构造成使得在使用中由使用流动产生的速度和/或湍流 被泵送在主泵室中的材料减少了。
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公开(公告)号：US20140044545A1
公开(公告)日：2014-02-13
申请号：US13970443
申请日：2013-08-19
IPC分类号： F04D29/22
CPC分类号： F04D29/2288 , Y10T29/49318 , Y10T29/4973
摘要： 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.
摘要翻译： 一种浆液泵叶轮，其包括前罩和后罩，每个外护罩和后罩具有内主面和外周边缘和中心轴线;多个泵送叶片，其在护罩的内主表面之间延伸，泵叶片设置在 间隔开的关系。 每个泵叶片包括在中心轴线的区域中的前缘和在护罩的外周边缘区域中的后缘，在相邻的泵叶片之间具有通道。 每个通道都具有排放导向叶片，每个排放导向叶片设置在相应的通道内并且位于更靠近一个或另一个泵送叶片并从该护罩中的至少一个护罩的内部主面突出。
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公开(公告)号：US09422938B2
公开(公告)日：2016-08-23
申请号：US14683686
申请日：2015-04-10
CPC分类号： F04D7/04 , F01D5/143 , F04D1/04 , F04D29/167 , F04D29/22 , F04D29/2255 , F04D29/2288 , Y10S416/02
摘要： 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.
摘要翻译： 离心泵叶轮包括前后罩和其间的多个泵送叶片，每个泵叶片在叶轮入口和后缘的区域中具有前缘，前护罩在叶轮的区域中具有弓形内表面 入口，弧形内表面的曲率半径（Rs）在叶轮（D2）的外径的0.05至0.16的范围内。后罩包括内主面和鼻部，其具有弯曲轮廓，其具有鼻尖端 在朝向前护罩延伸的中心轴线的区域中，在内主面和鼻部之间存在弯曲的过渡区域。 Fr是过渡区域的曲率半径，Fr / D2的比率为0.32至0.65。 还描述了叶轮的各种尺寸的其它比例。
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公开(公告)号：US20150337864A1
公开(公告)日：2015-11-26
申请号：US14739528
申请日：2015-06-15
CPC分类号： F04D29/669 , F04D1/00 , F04D7/04 , F04D29/22 , F04D29/428 , F04D29/4286 , F04D29/628 , Y10T29/4933
摘要： 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.
摘要翻译： 一种用于离心泵的泵壳体，其包括入口，排出口和在主泵送室的内周表面之间延伸的过渡表面和排出口的内周表面之间的过渡表面， 在使用中从主泵送室中的材料的使用中再循环流出口排出出口中的材料。 过渡表面具有切割水，其具有成型部分，该成形部分包括从另外通常为圆形的拱形或U形过渡表面不规则地延伸的突出部，并且构造成使得在使用中由使用流动产生的速度和/或湍流 被泵送在主泵室中的材料减少了。
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公开(公告)号：US20150211522A1
公开(公告)日：2015-07-30
申请号：US14683686
申请日：2015-04-10
CPC分类号： F04D7/04 , F01D5/143 , F04D1/04 , F04D29/167 , F04D29/22 , F04D29/2255 , F04D29/2288 , Y10S416/02
摘要： 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.
摘要翻译： 离心泵叶轮包括前后罩和其间的多个泵送叶片，每个泵叶片在叶轮入口和后缘的区域中具有前缘，前护罩在叶轮的区域中具有弓形内表面 入口，弧形内表面的曲率半径（Rs）在叶轮（D2）的外径的0.05至0.16的范围内。后罩包括内主面和鼻部，其具有弯曲轮廓，其具有鼻尖端 在朝向前护罩延伸的中心轴线的区域中，在内主面和鼻部之间存在弯曲的过渡区域。 Fr是过渡区域的曲率半径，Fr / D2的比率为0.32至0.65。 还描述了叶轮的各种尺寸的其它比例。
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公开(公告)号：US09057385B2
公开(公告)日：2015-06-16
申请号：US14289553
申请日：2014-05-28
CPC分类号： F04D29/669 , F04D1/00 , F04D7/04 , F04D29/22 , F04D29/428 , F04D29/4286 , F04D29/628 , Y10T29/4933
摘要： 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.
摘要翻译： 一种用于离心泵的泵壳体，其包括入口，排出口和在主泵送室的内周表面之间延伸的过渡表面和排出口的内周表面之间的过渡表面， 在使用中从主泵室中的材料的使用中再循环流出口排出出口中的材料。 过渡表面具有切割水，其具有成型部分，该成形部分包括从另外通常为圆形的拱形或U形过渡表面不规则地延伸的突出部，并且构造成使得在使用中由使用流动产生的速度和/或湍流 被泵送在主泵室中的材料减少了。
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公开(公告)号：US09004869B2
公开(公告)日：2015-04-14
申请号：US14106405
申请日：2013-12-13
CPC分类号： F04D7/04 , F01D5/143 , F04D1/04 , F04D29/167 , F04D29/22 , F04D29/2255 , F04D29/2288 , Y10S416/02
摘要： 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.
摘要翻译： 离心泵叶轮包括前后罩和其间的多个泵送叶片，每个泵叶片在叶轮入口和后缘的区域中具有前缘，前护罩在叶轮的区域中具有弓形内表面 入口，弧形内表面的曲率半径（Rs）在叶轮（D2）的外径的0.05至0.16的范围内。后罩包括内主面和鼻部，其具有弯曲轮廓，其具有鼻尖端 在朝向前护罩延伸的中心轴线的区域中，在内主面和鼻部之间存在弯曲的过渡区域。 Fr是过渡区域的曲率半径，Fr / D2的比率为0.32至0.65。 还描述了叶轮的各种尺寸的其它比例。
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公开(公告)号：US20140105747A1
公开(公告)日：2014-04-17
申请号：US14106405
申请日：2013-12-13
IPC分类号： F01D5/14
CPC分类号： F04D7/04 , F01D5/143 , F04D1/04 , F04D29/167 , F04D29/22 , F04D29/2255 , F04D29/2288 , Y10S416/02
摘要： 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.
摘要翻译： 离心泵叶轮包括前后罩和其间的多个泵送叶片，每个泵叶片在叶轮入口和后缘的区域中具有前缘，前护罩在叶轮的区域中具有弓形内表面 入口，弧形内表面的曲率半径（Rs）在叶轮（D2）的外径的0.05至0.16的范围内。后罩包括内主面和鼻部，其具有弯曲轮廓，其具有鼻尖端 在朝向前护罩延伸的中心轴线的区域中，在内主面和鼻部之间存在弯曲的过渡区域。 Fr是过渡区域的曲率半径，Fr / D2的比率为0.32至0.65。 还描述了叶轮的各种尺寸的其它比例。
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