密閉(bi)門(men):本(ben)密閉(bi)門(men)結合面采用(yong)高強(qiang)度(du)(du)彈(dan)性密封條密封,緊(jin)急關(guan)(guan)閉(bi)采用(yong)契鐵式拉(la)緊(jin)裝置,具(ju)有(you)密閉(bi)效果好、關(guan)(guan)閉(bi)速度(du)(du)快、抗壓強(qiang)度(du)(du)高德特點(dian)。適用(yong)于井下(xia)中(zhong)央配電室與主水泵房(fang)等具(ju)有(you)防水要求的峒室。