Ball expansion type plug with high sealing performance

The utility model provides a ball expansion type plug with high sealing performance, which comprises a stainless steel sleeve and a steel ball pressed into the bottom of the sleeve, the radius of thestainless steel sleeve is smaller than that of the steel ball, and simultaneously, a plurality of rows of sharp teeth are arranged on the outer surface of the side wall of the stainless steel sleeve.Compared with a steel ball sealing mode, the sealing mode of the ball expansion type plug is not linear sealing, but the combination of the multiple annular seals, the sealing effect is reliable, andthe leakage risk cannot be generated when an engine vibrates. Meanwhile, the installation process is simpler, and the problem of pressure leakage is solved. 本实用新型提供一种高密封性的球涨式堵头，包括不锈钢套筒以及压入所述套筒底部的钢球，其中，所述不锈钢套筒的半径小于所述钢球的半径，同时，所述不锈钢套筒侧壁的外表面设置有多排尖齿。相比钢球密封方式而言，球涨式堵头的密封方式不是线密封，而是若干个环状密封的组合，密封效果可靠，在发动机震动时也不会产生泄漏风险；同时安装过程更简易，解决了漏压的问题。