Coal mine gas separation device

The utility model relates to the technical field of coal mine gas separation devices, in particular to a coal mine gas separation device which comprises a gas separation machine body. The movable supporting mechanism is used for conveniently moving the gas separation machine body and stably supporting the gas separation machine body and is arranged on one side of the gas separation machine body; the movable supporting mechanism comprises a fixing plate fixedly installed at the bottom of the gas separation machine body. When the gas separation machine body needs to be moved, the gas separation machine body can be conveniently moved by retracting the supporting assembly and enabling the moving assembly to make contact with the ground, and when the gas separation machine body moves to a designated position, the gas separation machine body can be stably supported through the supporting assembly, and meanwhile the supporting assembly is made to adapt to the uneven ground; the gas separation machine body can still