1、 Explosion proof fan - purpose

B4-72The centrifugal fan can be used for indoor ventilation and air exchange in general factories and large buildings, and can be used for ventilation and air exchange of flammable and volatile gases. There must be no viscous substances in the gas, and the content of dust and hard particles should not exceed150mg/m^3，The gas temperature shall not exceed80℃.

2、 Explosion proof fan - type

The fan can be made into two types: "right" rotation and "left" rotation. Looking at the fan from the direction of the drive shaft, if the fan impeller rotates clockwise, it is called "right" rotation, represented by "right", and counterclockwise rotation is called "left" rotation, represented by "left"express.

The wind mechanism is a single inhalation. The outlet position of the fan is represented by the angle of the air outlet of the casing, and can be made on both sides0°45°90°180Four angles, and other angles can also be made as needed.

3、 Explosion proof fan - structure

The fan is mainly composed of a casing, impeller, air inlet, bearing box, motor, and other parts.

1The impeller is made of cast aluminum alloy and cast in one go. After precision machining, it undergoes strict static and dynamic balance correction, runs smoothly and reliably, has good aerodynamic performance, low noise, and high efficiency.

2The casing is made of ordinary steel plates welded into a snail shaped shell, which has two structures of separate packaging and welding with the support, making it stable and reliable.

3The air inlet is made into a convergent streamlined overall structure and fixed to the inlet side of the fan with bolts.

4The transmission system consists of a main shaft, an integral bearing box, rolling bearings, pulleys or couplings, etcN32Oil lubrication, good sealing performance, and smooth operation.

Several common methods for explosion-proof fans:

1. Explosion proof throat

2. Aluminum impeller+iron inner wall

3. There is a lower limit requirement for the clearance between the impeller and the casing

5. Selection of explosion-proof materials, such as fiberglass, PP, Aluminum impeller, stainless steel, etc