本实用新型是关于螺丝刀，特别是带安全绝缘外套的螺丝刀的发明。
The utility model relates to a screwdriver, in particular to a screwdriver with safety insulating sleeve.
本发明公开了一种密封绝缘管路连接机构，包括直通接头、绝缘帽、球型接头、绝缘套 环和外套螺母。
The invention discloses a connecting mechanism of sealed insulation pipelines, comprising a straight-through joint, an insulation cap, a spherical joint, an insulation sleeve ring and a cap nut.
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