A float-type sealing device comprises a screw cap and a float with a plug. The outer side wall of the plug is in threaded connection with the inner side wall of the screw cap through a matched first thread group; the longitudinal section of the plug is in an isosceles trapezoid shape with the top edge larger than the bottom edge, a suspender is arranged in the screw cap at the center shaft, and a horizontal pressing piece is arranged at the bottom end of the suspender. The pressing piece is used for abutting against the inner wall of the plug through the outer ring of the pressing piece so as to seal the inner cavity of the plug. The pressing piece and the first sealing ring are suspended in the screw cap to seal the inner cavity of the plug; a second sealing ring which cooperates with the plug to abut against the plug forms multiple sealing; the pressing piece pressed downwards along with the screw cap supports the inner wall of the plug, the gap of the first thread set is compacted by expanding the outer wall of the plug outwards, friction force is increased, and loosening and falling are effectively prevented. And the screw cap is hidden through the annular groove-shaped plug, and the fixing effect of the screw cap in the annular groove is further enhanced through the second thread group. The sealing device is simple in structure, low in cost, convenient to implement, good in multiple sealing effect, high in practicability and wide in applicability.

    一种浮筒式密封装置,包括旋盖、带堵头的浮筒;堵头的外侧壁和旋盖的内侧壁通过匹配的第一螺纹组螺接;堵头的纵截面呈顶边大于底边的等腰梯形,于中心轴处,旋盖内设吊杆,吊杆的底端设有水平的压片;压片用于通过其外圈抵撑堵头的内壁以密封堵头的内腔。本发明通过在旋盖内悬设压片及第一密封圈,密封堵头内腔;协同堵头顶压的第二密封圈,构成多重密封;随旋盖下压的压片顶撑堵头的内壁,通过向外扩张堵头的外壁密实第一螺纹组的间隙,增加摩擦力,有效防止松动、脱落。再通过环形槽状的堵头,隐秘旋盖,且进一步通过第二螺纹组强化旋盖在环形槽内的固定效果。其结构简单,成本低,实施方便,多重密封效果好,具有很强的实用性和广泛的适用性。


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    Title :

    Float type sealing device and sealing method


    Additional title:

    一种浮筒式密封装置及密封方法


    Contributors:
    LIU HANQING (author) / SHEN DAN (author)

    Publication date :

    2023-04-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    F16J Kolben , PISTONS / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS



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