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公开(公告)号：US4586873A
公开(公告)日：1986-05-06
申请号：US669861
申请日：1984-11-09
IPC分类号： F04F5/48
CPC分类号： F04F5/48
摘要： A mixer-ejector with jet effect incorporates inductor nozzles opening into a venturi profile conduit having in succession a highly convergent suction sleeve, a coupling wall and a diffuser. The coupling wall is a variable-profile venturi part, consisting of a hollow sleeve made of a distortable elastic material in a casing with leaktight sealing and incorporates means for introducing a fluid into the enclosure formed by the sleeve and the casing.
摘要翻译： 具有喷射效应的混合器 - 喷射器将电感喷嘴开口连接到文丘里型材导管中，连续地具有高度会聚的吸力套筒，联接壁和扩散器。 联接壁是可变型文丘里管部分，由具有密封密封的壳体中由可变形弹性材料制成的中空套管组成，并且包括用于将流体引入由套筒和壳体形成的外壳中的装置。
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公开(公告)号：US4233886A
公开(公告)日：1980-11-18
申请号：US930042
申请日：1978-08-01
CPC分类号： F16J15/406 , F04B53/164 , F16J15/40 , Y10S92/02
摘要： A sealing device for a high pressure hydraulic piston mechanism in which the gap between the cylinder in which the piston is slideable to pressurize delivery fluid therein is sealed by sealing fluid drawn from a separate supply to that of the delivery fluid, delivery means being associated with the sealing fluid supply and being operable in response to pressurization of the delivery fluid to deliver sealing fluid to said gap at a pressure sufficient to form a seal therein, the sealing fluid of said seal being in direct contact with the pressurized delivery fluid and the piston being movable in at least one hydrostatic bearing supplied with sealing fluid in parallel to the supply thereof to said gap between the piston and the cylinder.
摘要翻译： 一种用于高压液压活塞机构的密封装置，其中活塞可滑动以使其中的输送流体加压的气缸之间的间隙通过从单独供应源抽出的输送流体的密封流体密封，输送装置与 密封流体供应并且可响应于输送流体的加压而可操作以在足以在其中形成密封件的压力下将密封流体输送到所述间隙，所述密封件的密封流体与加压输送流体和活塞直接接触 可在至少一个静压轴承中移动，该轴承供应密封流体并平行于活塞和气缸之间的间隙。
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公开(公告)号：US5092609A
公开(公告)日：1992-03-03
申请号：US245676
申请日：1988-09-16
CPC分类号： F04B53/164 , F16J15/26 , Y10S277/904 , Y10S277/91
摘要： A sealing device wherein at least one of the sealing assemblies comprises at least two concentrically arranged rigid wedge rings having confronted conical surfaces, the inner and outer rings having respective inner and outer cylindrical surfaces slidingly confronting the plunger and the cylinder recessed portion, respectively, whereby axial compression of the wedge rings of each sealing assembly causes relative axial displacement and thus radial expansion thereof and forced mating of all confronting surfaces of said rings, plunger and cylinder, wherein the low-pressure end of one of the wedge rings of the first sealing assembly operatively abuts against the corresponding step of the cylinder recess while the second sealing assembly is slidably mounted in the recess and the high-pressure end thereof is exposed to the compressed liquid; and wherein an intermediate chamber defined in the recess between the sealing assemblies is filled with a sealing liquid to which the high pressure of the compressed liquid is transmitted through overall axial sliding of the second sealing assembly, thereby causing radial expansion of both sealaing assemblies and filling by the sealing liquid of the gaps between the confronted surfaces, the sealing liquid having a viscosity so adapted as to substantially plug the gaps and stop the compressed liquid.
摘要翻译： 一种密封装置，其中至少一个密封组件包括至少两个具有面对的锥形表面的同心布置的刚性楔形环，内环和外环分别具有相应的内圆柱面和外圆柱面，其滑动面对柱塞和圆筒凹部，由此 每个密封组件的楔环的轴向压缩引起相对的轴向位移，并因此使其径向膨胀，并且强制地配合所述环，柱塞和气缸的所有相对表面，其中第一密封件中的一个楔环的低压端 组件可操作地抵靠气缸凹部的相应台阶，同时第二密封组件可滑动地安装在凹部中，其高压端暴露于压缩液体; 并且其中限定在所述密封组件之间的所述凹部中的中间室填充有密封液体，所述压缩液体的高压通过所述第二密封组件的整体轴向滑动传递到所述密封液体，从而引起两个密封组件的径向膨胀和填充 密封液体通过面对面之间的间隙的密封液体具有适于基本上堵塞间隙并停止压缩液体的粘度。
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