The invention discloses a sealed electric spray pump propeller which comprises a shell and a rotating shaft, the rotating shaft is movably connected into end covers on the two sides of the shell through bearings, a motor stator and a rotor provide power for rotation, a propeller is fixedly installed at the output end of the rotating shaft, and the outer side of the propeller is arranged in a venturi tube; a sealing assembly is arranged on the side edge of the bearing and comprises a concave pole and a convex pole, and one of the concave pole and the convex pole is fixed to the rotating shaft; the concave pole is of an annular structure, a permanent magnet is arranged on the outer side, and a groove is formed in the inner side; the top of the convex pole is arranged in the groove, and a U-shaped gap is formed between the convex pole and the groove; the gap is filled with magnetic fluid; the magnetic fluid is accumulated at the bottom of the groove under the action of a magnetic field provided by the magnetic pole on the inner side of the permanent magnet, and a U-shaped sealing belt is formed between the convex pole and the concave pole by utilizing the principle of static pressure balance of the fluid in the U-shaped pipe. The invention provides a high-performance sealed electric spray pump propeller which is good in sealing performance and low in friction coefficient by utilizing magnetic fluid sealing.

    本发明公开了一种密封电动喷泵推进器,包括有壳体及转轴,转轴通过轴承活动连接在壳体两侧的端盖中,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中;轴承侧边设有密封组件,密封组件包括有凹极和凸极,凹极和凸极其中之一固定在转轴上;凹极呈环状结构,外侧设有永磁体,内侧设有凹槽;凸极顶部置于凹槽内,并与凹槽之间形成有U型间隙;所述间隙内填充磁流体;磁流体在永磁体内侧磁极提供的磁场作用下积聚在凹槽底部,利用流体在U型管中静压平衡的原理,在凸极与凹极之间形成U型的密封带。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的密封电动喷泵推进器。


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    Title :

    Sealed electric spray pump propeller


    Additional title:

    一种密封电动喷泵推进器


    Contributors:

    Publication date :

    2021-04-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING



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