Explosion-proof door for the resistance of industrial buildings outside the device accidental explosion, to protect the lives of personnel and industrial buildings and internal equipment intact, from the harm of the explosion shock wave; effectively prevent the continuation of the explosion hazard. The use of special industrial steel plate in accordance with the strict set of mechanical data production, and with high-performance hardware accessories, the use of more practical and beautiful. Safeguard the safety of life and property. Explosion-proof door is also called: anti-explosion door.
(A) Swing-open type explosion-proof door
Swing-type explosion-proof door shown in Figure 1. It is a use of white heavy sealing explosion-proof door, the general material is cast iron, door cover coated with heat-resistant concrete. This door is characterized by automatic reset, that is, when the furnace or flue gas explosion in the pressure generated by the moment is greater than the door’s self-weight in the door shaft generated by the moment, the door open; pressure is not enough to close automatically.
Rotary explosion-proof door is generally installed in the combustion chamber of the furnace wall, this explosion-proof door according to the door and the vertical direction of the angle of inclination can be divided into vertical and tilted type two. As shown in Figure 1 is a tilted type of rotary explosion-proof door, tilt angle is generally not more than 30 °.
(B) rupture membrane explosion-proof door
Rupture membrane type explosion-proof door is composed of bursting film and clamping device, shown in Figure 2. When the explosion occurs in the combustion chamber, the resulting pressure to destroy the rupture membrane, play a role in pressure relief. Blasting materials are asbestos and non-ferrous metals such as aluminum and copper, according to the pressure, temperature and other options. Currently used more is asbestos cement board. Rupture membrane type explosion-proof door is often installed in the flue.