Explosion -proof equipment of RH vacuum unloading system

The utility model provides an explosion -proof equipment of RH vacuum unloading system is equipped with the explosion -proof equipment who comprises pipe, retaining ring, clamp bolt, apron, sealed pad, swinging boom, round pin axle and connecting plate in the unloading riser upper end of RH vacuum unloading system, detain the pipe upper end has round cover plate, and a turning arm formula swinging boom is connected to apron upper surface one side, and the swinging boom articulates in " L " shape connecting plate upper end through the round pin axle, and the connecting plate lower extreme welds on the pipe lateral wall, is equipped with sealed the pad below the apron, and sealed the pad is fixed at the apron lower surface through ring shape retaining ring and clamp bolt. Because the inside negative pressure that is of its system of RH production period, apron automatic actuation under the draft effect can not influence RH vacuum, otherwise when inside the blasting of unloading system, the explosive force that