Pushing door

The utility model relates to a sliding door which does not cause air swirl when opening or closing the door, accords with the requirements of high purifying denuded zone and has good soundproofing and air sealing performances after the door is closed. An upper end of the door is embedded with a door head consisting of a guide groove, a limit device at an end of the guide groove, a rolling wheel on an upper part of the door, a signal processor at a top end of the guide groove, a transmission device and a door head cover. The limit device consists of a fixing frame fastened on two ends of the guide groove, a guide axle which is vertically inserted with the fixing frame, an axle cover, a position limiter, and a spring sleeved with the guide axle. A bottom end of the door is arranged in a ground rotation device consisting of a rotation wheel, a rotation wheel pivot and a regulation washer. A handle device which consists of two handles sleeved through two sides of the door and connected by a main axle and the axle cover, a handle locating cover and a sealing cover is arranged on a side of the door. A controller which is connected by a circuit is arranged in a wall on a side of a door frame.