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Will Roots blower self lock under negative pressure?

Source: Roots blower manufacturer Published on: March 1, 2022 Hits:

Self locking phenomenon generally means that the action line of the main force acting on the object is within a certain friction angle. No matter how large the force is, there will always be an opposite force to keep balance, and the object will be at rest.

   Roots Blower Will it self lock under negative pressure? According to my knowledge, Roots blower will not self lock when it is in negative pressure state. Roots blower is divided into positive pressure and negative pressure. Only negative pressure fan can establish negative pressure, and negative pressure fan, also known as Roots vacuum pump, needs to be used in combination with other pumps. What are the characteristics of negative pressure fan? Now, the staff of Roots blower manufacturer will explain to you, hoping to help you.
1. When the fan stops rotating, the gear, bearing and motor will be driven to rotate, so the load is very large.
2. The three blade root fan between the impeller and the housing has no absolute seal, and there is a gap between them, so the air inlet can be closed when there is negative pressure.
3. The impeller of the three leaf Roots blower is not a simple fan blade. The structure of the impeller and the blade is very different. The impeller has large mass and inertia. The work is not a simple fan, but a squeeze air.

Roots blower can be divided into positive pressure Roots blower and negative pressure Roots blower. Only negative pressure Roots blower can produce negative pressure, also known as Roots vacuum pump. The characteristics of this Roots blower are:

1. The mass of the impeller is large, resulting in great inertia, forming a powerful squeeze wind;

2. The impeller and housing of Roots blower are not sealed, and there is a certain active gap between them. When there is negative pressure, air can enter;

3. When Roots blower stops working, it will drive gear, bearing and motor to rotate, resulting in very large load.

Therefore, Roots blower will shut down under negative pressure without self-locking.