It’s applicable in the environments where there appear or may appear hazards of explosion and fire
Technical parameters: Blast resistance level: sites where the mixture of flammable gas in T1-T4 groups and on IIB and IIC levels, vapor and air forms explosive mixtures; average open/close speed: 2-9m/min Power source: 220V/380V, 50Hz
The design of blast resistance shutters is, on the basis of the steel rolling door, to modify the transmission parts, and equip them with blast resistance electric appliances, so as to realize the blast resistance function: the blast resistance motor is controlled by the blast resistance electric control box, and it can drive the winding shaft through the speed control device,to make the curtain plate fixed on the winding shaft move up and down along the guide rails on the two sides, and push the blast resistance button to realize the opening and closing of the door. When the shutter moves to the preset up and down extreme positions, it cuts off the power source of the motor through the limit device, to stop the shutter moving.
Manual operation can be realized by using the manual handle on the blast resistance motor. In the place of mechanical relative movement, it adopts the coupling to replace the sprocket drive, and the friction position inside the guide rail is embedded with copper plates or nylon.
Blast resistance shutter