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公开(公告)号:US4588353A
公开(公告)日:1986-05-13
申请号:US611985
申请日:1984-05-18
CPC分类号: F04D29/4286 , F04D29/026 , F05D2300/43 , F05D2300/431
摘要: A submersible pump especially usable for civil engineering works is provided in which a wear resistant protecting member is disposed at the portion opposing the backside of an impeller shroud to protect that portion from wear due to abrasion by earth and sand contained in the liquid handled by the pump. The protecting member is provided with holes or portions similar to holes which are adapted to surround the exposed portions of the bolts so as to prohibit the liquid flow from directly contacting the bolt portions with flowing speed or kinetic energy so that wear of the bolts is prevented.
摘要翻译: 特别适用于土木工程的潜水泵,其中耐磨保护构件设置在与叶轮护罩背面相对的部分,以保护该部分免受由于由 泵。 保护构件设置有类似于孔的孔或部分,其适于围绕螺栓的暴露部分,以防止液体流以直接接触螺栓部分的流动速度或动能,从而防止螺栓磨损 。
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公开(公告)号:US4552873A
公开(公告)日:1985-11-12
申请号:US407914
申请日:1982-08-13
申请人: Tetsuo Miyadera , Yukio Sugimura , Toshihiko Hashimoto , Teruo Tanaka , Kimio Iino , Tomoyuki Shibata , Shinichi Sugawara
发明人: Tetsuo Miyadera , Yukio Sugimura , Toshihiko Hashimoto , Teruo Tanaka , Kimio Iino , Tomoyuki Shibata , Shinichi Sugawara
IPC分类号: C07D487/04 , A61K31/40 , C07D20060101 , C07D207/12 , C07D477/00 , C07D477/20 , C07D487/00
CPC分类号: C07D477/20 , C07D207/12
摘要: Compounds of formula (I): ##STR1## [wherein: R.sup.1 represents a hydrogen atom, an alkyl group, an alkoxy group or various substituted alkyl groups;R.sup.2 represents a group of formula ##STR2## in which ##STR3## represents an alicyclic amine group having from 4 to 8 ring atoms, optionally having a single double bond, optionally containing an additional hetero-atom and optionally having an oxo group on the ring;X represents a hydrogen atom, an alkyl group, an alkoxy group, an alkylthio group, an alkylsulphinyl group, an alkylsulphonyl group, a hydroxy group, a halogen atom or various substituted alkyl groups;Y represents a hydrogen atom, an alkyl group, an aliphatic acyl group or an acylimidoyl group; andR.sup.3 represents a carboxy group or a protected carboxy group]and pharmaceutically acceptable salts thereof have valuable antibacterial activity, especially in vivo.
摘要翻译: 式(I)的化合物:其中:R1表示氢原子,烷基,烷氧基或各种取代的烷基; R2代表一组式(IMAGE),其中
表示具有4至8个环原子的脂环族胺基,任选具有单个双键,任选地含有另外的杂原子并且任选地在环上具有氧代基 ; X表示氢原子,烷基,烷氧基,烷硫基,烷基亚磺酰基,烷基磺酰基,羟基,卤素原子或各种取代的烷基; Y表示氢原子,烷基,脂肪族酰基或酰亚氨基; 和R3表示羧基或保护的羧基]及其药学上可接受的盐具有有价值的抗菌活性,特别是在体内。 -
公开(公告)号:US4454993A
公开(公告)日:1984-06-19
申请号:US342408
申请日:1982-01-25
CPC分类号: F04D7/045 , B02C18/0092
摘要: An improved grinder pump of the water immersed type is disclosed which includes a motor driven semi-open type pump impeller, a grinder ring fitted and firmly mounted in the suction port at the bottom of the pump casing, the grinder ring being provided with a plurality of axially extending grinding grooves and edges on the inner surface thereof, and a grinder impeller fixedly screwed on the distal end of the pump shaft to be coupled to the pump impeller in an end-to-end relation, the grinder impeller being provided with at least two axially extending grinding blades provided on the lower conical surface of the hub thereof so that any foreign material contained in the pumping liquid is ground or shredded into smaller pieces by cooperation of the grinding edges of the grinder ring with the grinding blades of the grinder impeller. A plurality of radially extending auxiliary blades are provided on the upper surface of the hub of the grinder impeller so as to perform additional pumping and grinding operation. The grinding blades protrude downwardly beyond the bottom of the grinder ring to provide the additional effect of ensuring to prevent foreign material in the pumping liquid from directly entering the grinding grooves from the suction port and foreign material is subjected to repeated shredding by the agitation of the grinding blades.
摘要翻译: 公开了一种改进的浸水式研磨机,其包括电机驱动的半开式泵叶轮,研磨环安装并牢固地安装在泵壳底部的吸入口中,研磨环设有多个 在其内表面上的轴向延伸的研磨槽和边缘,以及固定地旋拧在泵轴的远端上的研磨机叶轮,以便以端对端关系耦合到泵叶轮,研磨机叶轮设置在 至少两个轴向延伸的研磨刀片设置在其毂的下锥形表面上,使得包含在泵送液体中的任何异物通过研磨环的研磨边缘与研磨机的研磨刀片的协作被研磨或切碎成更小的碎片 叶轮。 多个径向延伸的辅助叶片设置在研磨机叶轮的轮毂的上表面上,以进行额外的泵送和研磨操作。 研磨刀片向下突出超过研磨环的底部,以提供额外的效果,以确保防止泵送液体中的异物从吸入口直接进入研磨槽,异物通过搅拌而被重复粉碎 研磨刀片。
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