专利号 :ＺＬ992 5 5 2 88 5专利权人 :上海宝钢集团公司一种碗型油堵拔出工具 ,由弹性套筒、滑杆、重锤和手柄组成。弹性套筒下部具有倒锥形内孔并开有沿圆周均布的轴向槽 ,上部为与倒锥形内孔同轴线的螺纹孔 ,弹性套筒外表面下端具有圆盘刃口 ,滑杆主体为圆柱形 ,下端为与端 Patent No .: ZL992 5 5 2 88 5 Patentee: Shanghai Baosteel Group Co., Ltd. A bowl-shaped oil plugging and unplugging tool consists of a flexible sleeve, a slide bar, a weight and a handle. The lower part of the elastic sleeve has an inverse tapered inner hole and an axial groove uniformly distributed along the circumference; the upper part is a threaded hole coaxial with the inverted tapered inner hole; the lower end of the outer surface of the elastic sleeve has a disk edge; The main body of the rod is cylindrical and the lower end is the end