stainless steel roots blower and cast iron roots blower difference between

What are the differences between stainless steel roots blower and cast iron roots blower? Cast iron roots blower is a common material type, with low price, stable and reliable operation, which can be used in most working conditions. However, stainless steel roots blower is more expensive than cast iron roots blower, but it has better corrosion resistance and cleaner gas transmission. Therefore, it is often used in working environment with high anti-corrosion requirements or when conveying corrosive gas.

Differences between two kinds of Roots blower:

1. Different corrosion resistance

The roots blower made of stainless steel has strong corrosion resistance, such as carbon dioxide, hydrogen sulfide and chlorine when the transmission medium is acid gas. There are also alkaline gases such as ammonia. When conveying these gases, the roots blower must be made of stainless steel, which is not recommended if the general cast iron roots blower is used.

2. The cleanliness of the output gas is different

Roots blower used in the food industry requires that the output gas must be 100% clean, such as: sugar industry, milk powder industry. Stainless steel roots blower is used. Stainless steel roots blower will not produce any micro particles discharged with the gas during operation, while cast iron roots blower will produce more or less micro particle wear, which will be mixed in food after the gas is discharged. Therefore, the best choice for the food industry is stainless steel.

3. Different prices

The cost of stainless steel roots blower is relatively high, which is generally three times higher than that of cast iron. Moreover, the production process of stainless steel is very difficult, because the material property is very sticky. Therefore, the price of stainless steel roots blower is at least 4-5 times higher than that of cast iron roots blower.

Common points of two kinds of Roots blower:

1. The working principle of Roots blower is the same

No matter stainless steel roots blower or cast iron roots blower, the working principle of the two kinds of fans is the same, both of them are volumetric fans, and the delivered air volume is directly proportional to the rotating speed.

2. Roots blower has the same structure

All of them adopt three blade linear impeller, with smooth inlet and exhaust pulsation and low noise. The whole machine has compact structure and beautiful appearance.

What are the differences between stainless steel roots blower and cast iron roots blower? Stainless steel roots blower is different from cast iron roots blower mainly in material, and its working principle and fan interface are basically the same. Stainless steel roots blower is made of stainless steel, so it has better corrosion resistance, and the cleanliness of output gas is higher than that of cast iron roots blower.