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How to distinguish high pressure and low pressure of Roots blower

There is no oil in the medium of Roots blower. It has the advantages of simple structure, convenient maintenance, long service life and small vibration. Its biggest feature is that when the pressure is adjusted within the allowable range, the flow rate changes little, the pressure selection range is very wide, and it has the characteristics of forced gas transmission. Let's follow the roots blower manufacturer to understand how roots blower distinguishes high pressure and low pressure.


The working principle of Roots blower is that there are three trilobal impellers on the two parallel shafts. There is always a small gap between the wheel and the hole surface of the oval case and the impellers. As the impellers rotate in opposite directions, a certain amount of gas surrounded by the box and impeller is transported from the suction side to the discharge side. Each impeller is always kept in the correct phase by the synchronous gear, so it can be high-speed, without internal lubrication, and has simple structure, stable operation and stable performance. It has been used in a wide range of fields.

Cement Roots Air Blower.jpg

How to distinguish high pressure and low pressure of Roots blower:


1. The pressure is lower than 58.8kpa, including 58.8kpa


Under this pressure, above 9.8kpa, it is called low-pressure three blade roots blower. Low pressure three leaf roots blower is air-cooled, and low-pressure roots blower is usually single oil tank, which is different from high-pressure three leaf roots blower.


2. The pressure ranges from 58.8 to 98 kPa


It is called high-pressure roots blower. The high-pressure roots blower is a series of double oil tanks. Under this pressure, water-cooling is required to ensure that all accessories can work normally. For water cooling, high pressure roots blower can also use air cooling at present.


3. Above 98kpa


Above 98kpa also belongs to the high-pressure roots blower series. Because of the high pressure, double-stage boost is required. There are some differences in the structure between the two-stage boost roots blower and the ordinary roots blower.


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