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公开(公告)号：US4973433A
公开(公告)日：1990-11-27
申请号：US387168
申请日：1989-07-28
IPC分类号： B01F3/04
CPC分类号： B01F3/04262 , B01F2003/0439 , B01F2215/0044
摘要： Apparatus for injecting gas into molten metal includes a porous ceramic body having a first surface through which gas can be introduced into the body, and a second surface through which gas can flow from the body. A refractory member is attached to the body and surrounds at least the first surface, while leaving the second surface exposed. The refractory member is impervious to gas, while having a coefficient of thermal expansion approximating that of the body. Preferably, a refractory sealant securely attaches the refractory member to the body. By use of the present invention, the refractory member and the body remain tightly connected to each other at all times. Accordingly, gas leaks are prevented and all gas flowing into the body is discharged through the second surface, as desired.
摘要翻译： 将气体注入熔融金属的装置包括具有第一表面的多孔陶瓷体，气体可以通过该第一表面被引入到主体中，以及第二表面，气体可以通过该第二表面从主体流出。 耐火构件附接到主体并且至少围绕第一表面，同时使第二表面暴露。 耐火构件不透气，同时热膨胀系数接近于身体的热膨胀系数。 优选地，耐火密封剂将耐火构件牢固地附接到主体。 通过使用本发明，耐火构件和主体始终保持彼此紧密连接。 因此，防止气体泄漏，并且根据需要，流入体内的所有气体通过第二表面排出。
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公开(公告)号：US5586863A
公开(公告)日：1996-12-24
申请号：US468378
申请日：1995-06-06
CPC分类号： F04D29/2216 , F04D29/22 , F04D7/065
摘要： A molten metal pump having an elongated shaft with an impeller disposed adjacent the end of the shaft and a means for rotating the shaft. The impeller is formed with an imperforate substantially circular base surrounded by a bearing and has a surface facing toward the shaft. At least two imperforate vanes are connected to and extend substantially perpendicular from the surface and radially from the shaft or a hub securing the shaft toward a peripheral portion of the base. The vanes are spaced apart at terminal inlet ends along their entire radial dimension to create an inlet area comprised of the axial opening between adjacent vanes at the terminal ends and an outlet area comprised of a radial opening between adjacent vanes along the axial direction of the vanes. Each vane has a leading edge with a distal portion adjacent the periphery of the base portion which forms an angle of less than about 100.degree. relative to a tangent to said circular base drawn at the center of the vane.
摘要翻译： 一种具有细长轴的熔融金属泵，其具有邻近轴的端部设置的叶轮和用于旋转轴的装置。 叶轮形成有由轴承围绕的无孔大致圆形的基部，并且具有面向轴的表面。 至少两个无孔叶片从表面和径向基本上垂直于轴或者将轴固定到基部的周边部分的轮毂。 叶片沿着其整个径向尺寸在末端入口端处间隔开以形成入口区域，该入口区域包括在末端处的相邻叶片之间的轴向开口，以及由沿着叶片的轴向方向的相邻叶片之间的径向开口 。 每个叶片具有前缘，其远端部分邻近基座部分的周边，相对于在叶片中心处绘制的所述圆形基部的切线形成小于约100度的角度。
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公开(公告)号：US5088893A
公开(公告)日：1992-02-18
申请号：US649221
申请日：1991-01-25
IPC分类号： B22D39/00 , F04D7/06 , F04D13/02 , F04D29/04 , F04D29/047
CPC分类号： F04D29/047 , B22D39/00 , F04D13/021 , F04D7/065
摘要： A molten metal pump includes an impeller disposed at the end of an elongate drive shaft. The drive shaft is disposed within an elongate, hollow post. The impeller and the end of the post are adapted to be immersed in molten metal. An inert gas is conveyed through the gap between the outer surface of the drive shaft and the inner surface of the post, which gas is discharged into the molten metal in the vicinity of the impeller. Because the drive shaft is insulated from the molten metal, it can be made of a durable material such as steel; because the post is stationary relative to the molten metal, the metal is stirred only by the impeller, and not by the drive shaft. The invention includes other features such as a quick disconnect capability and a radial adjustment capability.
摘要翻译： 熔融金属泵包括设置在细长驱动轴的端部处的叶轮。 驱动轴设置在细长的中空柱内。 叶轮和柱的端部适于浸入熔融金属中。 惰性气体通过驱动轴的外表面和柱的内表面之间的间隙传送，该气体被排放到叶轮附近的熔融金属中。 因为驱动轴与熔融金属绝缘，所以它可以由诸如钢的耐用材料制成; 因为柱相对于熔融金属是固定的，所以金属仅由叶轮而不是驱动轴搅动。 本发明包括诸如快速断开能力和径向调节能力的其它特征。
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公开(公告)号：US5470201A
公开(公告)日：1995-11-28
申请号：US312327
申请日：1994-09-26
CPC分类号： F04D29/2216 , F04D29/22 , F04D7/065
摘要： A molten metal pump including a vaned impeller having a larger outlet area than inlet area which demonstrates prolonged high effectiveness and reduces the likelihood of catastrophic failure.
摘要翻译： 包括具有比入口面积大的出口面积的叶轮的熔融金属泵，其表现出延长的高效率并降低灾难性故障的可能性。
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公开(公告)号：US5143357A
公开(公告)日：1992-09-01
申请号：US614914
申请日：1990-11-19
CPC分类号： C22B21/0084 , C21C7/00 , C21C7/072
摘要： Metal particles are melted by mixing them with molten metal contained in a bath. A shaft-supported, rotatable impeller is immersed into the molten metal and rotated so as to establish a vortex-like flow of molten metal. Metal particles are deposited onto the surface of the molten metal in the vicinity of the rotating impeller. The particles are submerged substantially immediately after being deposited onto the surface of the molten metal. The impeller includes a thin rectangular prism having sharp-edged corners and vanes that extend upwardly from the prism. The impeller also can be used to disperse gas into the molten metal by pumping the gas through a bore extending the length of the shaft and out of the impeller along the lower surface of the impeller. The gas is sheared into finely divided bubbles as it rises along the sides of the impeller.
摘要翻译： 通过将金属颗粒与包含在浴中的熔融金属混合来熔化金属颗粒。 轴支撑的可旋转的叶轮浸入熔融金属中并旋转，以形成涡流状的熔融金属。 金属颗粒沉积在旋转叶轮附近的熔融金属表面上。 颗粒在沉积在熔融金属表面上之后基本上立即被浸没。 叶轮包括具有从棱镜向上延伸的锋利边角和叶片的薄矩形棱镜。 叶轮也可用于通过沿着叶轮的下表面的轴延伸并从叶轮的外部延伸的气体泵送气体来将气体分散到熔融金属中。 当气体沿着叶轮的侧面上升时，气体被剪切成细小的气泡。
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公开(公告)号：US5165858A
公开(公告)日：1992-11-24
申请号：US529105
申请日：1990-07-10
IPC分类号： B22D39/00 , F04D7/06 , F04D13/02 , F04D29/04 , F04D29/047
CPC分类号： F04D29/047 , B22D39/00 , F04D13/021 , F04D7/065
摘要： An impeller for a molten metal pump having a cup-shaped body comprised of a sidewall and a closed end portion that define a cavity. A plurality of shear vanes extend radially from the outer surface of the impeller, particularly from the end portion of the impeller. The impeller also has a plurality of openings extending laterally through its sidewall, wherein the openings have center lines disposed parallel to lines extending radially from the center of the cavity. The openings may be equidistantly spaced about the periphery of the sidewall. The impeller may also be comprised of a bearing member forming a portion of the sidewall.
摘要翻译： 一种用于熔融金属泵的叶轮，其具有由限定空腔的侧壁和封闭端部组成的杯形主体。 多个剪切叶片从叶轮的外表面径向延伸，特别是从叶轮的端部延伸。 叶轮还具有横向延伸穿过其侧壁的多个开口，其中开口具有平行于从腔的中心径向延伸的线设置的中心线。 开口可以围绕侧壁的周边等距离地间隔开。 叶轮也可以由形成侧壁的一部分的轴承构件构成。
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公开(公告)号：US5294245A
公开(公告)日：1994-03-15
申请号：US857448
申请日：1992-03-25
CPC分类号： C22B21/0084 , C21C7/00 , C21C7/072
摘要： Metal particles are melted by mixing them with molten metal contained in a bath. A shaft-supported, rotatable impeller is immersed into the molten metal and rotated so as to establish a vortex-like flow of molten metal. Metal particles are deposited onto the surface of the molten metal in the vicinity of the rotating impeller. The particles are submerged substantially immediately after being deposited onto the surface of the molten metal. The impeller includes a thin rectangular prism having sharp-edged corners and vanes that extend upwardly from the prism. The impeller also can be used to disperse gas into the molten metal by pumping the gas through a bore extending the length of the shaft and out of the impeller along the lower surface of the impeller. The gas is sheared into finely divided bubbles as it rises along the sides of the impeller.
摘要翻译： 通过将金属颗粒与包含在浴中的熔融金属混合来熔化金属颗粒。 轴支撑的可旋转的叶轮浸入熔融金属中并旋转，以形成涡流状的熔融金属。 金属颗粒沉积在旋转叶轮附近的熔融金属表面上。 颗粒在沉积在熔融金属表面上之后基本上立即被浸没。 叶轮包括具有从棱镜向上延伸的锋利边角和叶片的薄矩形棱镜。 叶轮也可用于通过沿着叶轮的下表面的轴延伸并从叶轮的外部延伸的气体泵送气体来将气体分散到熔融金属中。 当气体沿着叶轮的侧面上升时，气体被剪切成细小的气泡。
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公开(公告)号：US5286163A
公开(公告)日：1994-02-15
申请号：US532889
申请日：1990-06-05
申请人： Lutfi Amra , Ronald E. Gilbert , George S. Mordue
发明人： Lutfi Amra , Ronald E. Gilbert , George S. Mordue
CPC分类号： F04D29/708 , B01D35/26 , C22B9/055 , F04D13/04 , F04D7/065
摘要： A molten metal pump includes a filter that prevents ingestion of foreign material such as dross from molten metal within which the pump is immersed. The filter is a large structure that is secured to the base of the pump surrounding the pump's inlet. The filter forms a cavity adjacent the pump's inlet. The ratio of the surface area of the filter to the inlet area of the pump is very large due in part to a corrugated end wall included as part of the filter. The filter has a low porosity while maintaining a high flow rate for the pump.
摘要翻译： 熔融金属泵包括防止从浸入其中的熔融金属吸收异物诸如渣滓的过滤器。 过滤器是一种大型结构，其固定在泵的入口周围的泵的底部。 过滤器在泵的入口附近形成一个空腔。 过滤器的表面积与泵的入口面积的比例非常大，部分原因在于作为过滤器的一部分包括的波纹端壁。 过滤器具有低孔隙率，同时保持泵的高流量。
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公开(公告)号：US4474315A
公开(公告)日：1984-10-02
申请号：US368703
申请日：1982-04-15
CPC分类号： B22D39/02
摘要： A molten metal transfer device for withdrawing a selected quantity of molten metal from a bath includes structure defining a chamber disposed within the bath, the chamber including a first opening through which molten metal can flow from the bath into the chamber and a second opening through which molten metal can flow outwardly from the chamber. A cup-like bucket is disposed within the chamber for vertical reciprocating movement, the bucket having a generally vertically oriented slot included as part of its sidewall. The device includes a displacement mechanism for urging the bucket laterally toward engagement with the surface of the chamber. The device also includes mechanisms for easily removing buckets and chambers and replacing them with new buckets and chambers.
摘要翻译： 用于从浴中取出选定数量的熔融金属的熔融金属转移装置包括限定设置在槽内的室的结构，该室包括第一开口，熔融金属可以通过该第一开口从熔池流入室中;第二开口， 熔融金属可以从腔室向外流动。 杯状桶设置在室内用于垂直往复运动，所述桶具有作为其侧壁的一部分的大致垂直定向的槽。 该装置包括用于将铲斗侧向推动以与腔室的表面接合的位移机构。 该装置还包括用于容易地移除桶和室并用新的桶和室替换它们的机构。
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公开(公告)号：US5634770A
公开(公告)日：1997-06-03
申请号：US460979
申请日：1995-06-05
CPC分类号： F04D29/2216 , F04D29/22 , F04D7/065
摘要： An elongated shaft suited to a molten metal environment which forms a connection between a rotor and an impeller. The shaft being formed with at least one end, in cross-section, having a plurality of rounded side portions with a relatively large radius and rounded corners having a relatively small radius connecting the side portions.
摘要翻译： 适合于形成转子和叶轮之间的连接的熔融金属环境的细长轴。 所述轴形成为具有至少一个端部，其横截面具有多个具有相对大的半径的圆形侧部，并且具有连接所述侧部的相对较小半径的圆角。
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