煤(mei)粉管道換向裝(zhuang)置(zhi)：                 

方(fang)(fang)形(xing)手動(dong)(dong)正(zheng)(zheng)三通(tong)(tong)換(huan)(huan)向閥(fa)(fa)、上(shang)圓(yuan)下(xia)方(fang)(fang)形(xing)手動(dong)(dong)正(zheng)(zheng)三通(tong)(tong)換(huan)(huan)向閥(fa)(fa)、方(fang)(fang)形(xing)氣(qi)動(dong)(dong)正(zheng)(zheng)三通(tong)(tong)換(huan)(huan)向閥(fa)(fa)、上(shang)圓(yuan)下(xia)方(fang)(fang)形(xing)氣(qi)動(dong)(dong)正(zheng)(zheng)三通(tong)(tong)換(huan)(huan)向閥(fa)(fa)、方(fang)(fang)形(xing)電(dian)動(dong)(dong)正(zheng)(zheng)三通(tong)(tong)換(huan)(huan)向閥(fa)(fa)、上(shang)圓(yuan)下(xia)方(fang)(fang)形(xing)電(dian)動(dong)(dong)正(zheng)(zheng)三通(tong)(tong)換(huan)(huan)向閥(fa)(fa)、套筒是電(dian)動(dong)(dong)三通(tong)(tong)閥(fa)(fa)、擋(dang)板式換(huan)(huan)向裝置。