The invention discloses an electric spray pump thruster which comprises a shell and a rotating shaft, the rotating shaft is movably connected in the shell through a bearing, a motor stator and a rotor provide power for rotation, a propeller is fixedly installed at the output end of the rotating shaft, and a venturi tube is arranged on the outer side of the propeller; a sealing assembly is arranged on the side of the bearing; the sealing assembly comprises an outer ring and an inner ring which are respectively fixed on the end cover and the rotating shaft; the outer ring is of an annular structure, and a groove is formed in the inner side. The inner ring is provided with salient poles, the salient poles are arranged in the grooves, U-shaped gaps are formed between the salient poles and the grooves, the gaps in the two sides are filled with magnetofluid, and magnetofluid sealing belts are formed in the gaps through the magnetofluid under the action of the magnetic poles. Transition fluid with the density not smaller than that of the magnetic fluid is filled in a bottom gap sealed by the magnetic fluid sealing belts on the two sides; and the transition fluid and the magnetic fluid are combined together to form a U-shaped liquid sealing belt. The invention provides the high-performance electric spray pump propeller which is good in sealing performance and low in friction coefficient by utilizing magnetofluid sealing.

    本发明公开了一种电动喷泵推进器,包括有壳体及转轴,转轴通过轴承活动连接在壳体中,由电机定子与转子提供动力旋转,转轴输出端固定安装有螺旋桨,螺旋桨外侧设有文氏管;轴承侧边设有密封组件;所述密封组件包括有外环和内环,分别固定在端盖及转轴上;外环呈环状结构,内侧设有凹槽;所述内环上设有凸极,凸极置于凹槽内,与凹槽之间形成U型间隙,两侧的间隙中均填充有磁流体,磁流体由于磁极的作用,在间隙中各自形成磁流体密封带;在被两侧磁流体密封带所封闭的底部间隙中填充有密度不小于磁流体的过渡流体;过渡流体与磁流体共同组合成一个U型液态密封带。本发明利用磁流体密封提供了一种密封性能好、摩擦系数低的高性能电动喷泵推进器。


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    Titel :

    Electric spray pump propeller


    Weitere Titelangaben:

    电动喷泵推进器


    Beteiligte:
    WANG QIANJIN (Autor:in)

    Erscheinungsdatum :

    2021-05-07


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES



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