Blind plate valve and double-pipeline device

The embodiment of the utility model relates to the field of valves, in particular to a blind plate valve and a double-pipeline device.The blind plate valve comprises a supporting plate, at least three installation positions are arranged on the supporting plate and comprise the first installation position, the second installation position and the third installation position, and the blind plate end is arranged on the first installation position; the standby blind plate is detachably arranged on the second mounting position or the third mounting position; the driving part is used for driving the supporting plate to move, when needed or parts are damaged and need to be replaced, a standby blind plate can be installed on the second installation position or the third installation position, the blind plate end is matched to achieve the one-through-one-closed or full-closed effect of the two pipelines, automatic blind plate drawing and blocking synchronous operation on the double-pipeline parallel platform is achiev