Pressure relief device for bidirectional handle rotating window blind

The utility model relates to a two-way handle rotary type louver pressure releasing device and relates to a device which is used to release the pressure of an air door, the purposes of the utility model are to solve the problem that the air door is opened difficultly and to provide the two-way handle rotary type louver pressure releasing device which can finish releasing the pressure and opening the door simultaneously in short time and is rapid in operation, convenient, and labor-saving. A group of blinds (2) are installed on a louver frame (6) of the utility model, each blind (2) uses a connecting plate (4) to mutually connect through pins (7), a connecting arm (8) is installed on the pins (7) on the lower end, and a reset extension spring (3) and a drag chain (5) are fixed on the connecting arm (8). The other end of the reset extension spring (3) is fixed on a lateral plate of the louver frame (6), and the other end of the drag chain (5) is fixed on a two-way handle (1). The device of the utility model is