three blade roots blower and two blade roots blower difference between

At present, there are many kinds of Roots blower in domestic market, but there are many kinds. Classification of Roots blower:

1. According to the material used, the blowers can be divided into several types, such as iron shell fan (ordinary fan), FRP fan, plastic fan, aluminum fan, stainless steel fan, etc.

2. According to the direction of gas flow, blowers can be divided into centrifugal type, axial flow type, oblique flow type (mixed flow type) and cross flow type.

The conveying medium of Roots blower is clean air, clean gas, sulfur dioxide and other natural gases. In view of the above characteristics, roots blower can be widely used in metallurgical, chemical, chemical fertilizer, petrochemical, instrument and building materials industries.

Through comparison, we can intuitively distinguish what two blade roots blower is and what is three leaf roots blower. The most intuitive performance is: the three blade roots blower is a volumetric blower, and the delivered air volume is proportional to the number of revolutions. Each time the impeller of the three blade roots blower rotates, two impellers perform three suction and exhaust actions. Compared with the two blade type, the gas pulsation is small, the vibration is small, and the noise is low. There is always a small gap between the impeller on the two shafts of the fan and the hole surface in the oval shell, between the end face of the impeller and the front and rear end cover of the fan, and between the fan impeller. Driven by the synchronous gear, the wind is transported from the air inlet of the fan along the inner wall of the shell to the discharge side. Fan cavity does not need lubricating oil, simple structure, smooth operation, stable performance, adapt to a variety of uses, has been used in a wide range of fields.

The following figure shows the structure of Roots blower

Compared with the two blade type, the gas pulsation is smaller, the vibration is smaller and the noise is lower. There is always a small gap between the impeller on the two shafts of the fan and the hole surface in the oval shell, between the end face of the impeller and the front and rear end cover of the fan, and between the fan impeller. Driven by the synchronous gear, the wind is transported from the air inlet of the fan along the inner wall of the shell to the discharge side. Fan cavity does not need lubricating oil, simple structure, smooth operation, stable performance, adapt to a variety of uses, has been used in a wide range of fields.

Three leaf roots blower can be said to be a revolutionary progress of two blade roots blower. Compared with two blade blower, three blade roots blower has better pulsation than two blade due to its blade profile characteristics. Therefore, it has obvious advantages: greatly reducing vibration and noise (effectively reducing noise by more than 20 dB)! This is conceivable for the life and stability of mechanical products. At present, roots fans on the market rarely see two leaf roots fans, which have been basically eliminated. The existing two leaf roots fans are all with large air volume.