What is the cause of sudden pressure rise of Roots blower during operation?

What are the characteristics of three blade roots blower?

The three blade roots blower has relatively stable working characteristics. There are small gaps between the rotor and rotor, between the rotor and pump body, and between the rotor and side cover of the three blade roots blower, so there is no friction in the working chamber, no contact wear, no internal lubrication, simple structure, economic durability, good balance, convenient use and maintenance, and the conveyed medium is free of oil and has a long service life, That is, we often say that the leather is solid and durable.

Roots blower is often used for sewage treatment or aquaculture. What causes the overpressure when using the blower? Many customers don't know how to solve this problem. This situation is generally not a product quality problem, most of which is caused by blocked equipment exhaust, blocked pipes, and blocked fan outlet. In short, because the air cannot be discharged, the equipment is suffocated, and the pressure rises, resulting in overpressure and overload, and then causing the motor current to rise. Although Roots blower is relatively stable and durable, overpressure of Roots blower is also dangerous. If it is overpressure for a long time, the service life of the equipment will be shortened. Therefore, if the fan has overpressure, it must be solved in time.

Next, the Roots blower manufacturer briefly analyzes how to solve the problem of sudden pressure rise of Roots blower and equipment suffocation:

1. If the fan model is too large and the air flow is too strong, it will cause overpressure and suffocation of the fan. A vent valve can be installed to blow off part of the air flow to reduce the air flow and resistance.

2. Due to improper operation, the valve is not opened and closed according to the operation process. If the valve is closed during the operation of the fan, the pressure will rise suddenly. Similarly, if the valve is reversed or the direction is reversed, the pressure will also rise.

3. If the fan is used for water treatment, when the sewage water level rises suddenly, the pipeline resistance increases, causing the equipment to be suffocated, and the fan pressure suddenly rises and overpressure.

4. When Roots blower is used for underwater aeration in aquaculture or sewage treatment, if the aeration hole or disc is blocked by sludge, overpressure and suffocation will also occur, and the aeration pipe or disc needs to be cleaned or replaced.

5. The pipeline is old and poorly maintained, and the dirt blockage is not cleaned in time, which causes pressure rise.

6. Roots blower is required to be started with no load. Due to operation error, negative pressure starting will also cause instantaneous overpressure of the blower, causing other faults. The correct startup mode is no-load startup, and slowly close the vent valve.

The above is an analysis of the reasons for the sudden rise of the exhaust pressure of Roots blower. If such a situation occurs, it can be solved by comparing the causes.