What is the relationship between the pressure and flow of Roots blower?

Roots blower operates under different conditions. So how to change the pressure of the fan under the condition of constant flow? Those insiders who have some knowledge of the performance of the three leaf roots blower will know that in fact the speed of the roots blower will not interfere with the wind pressure of the blower, that is, the wind can maintain the pressure of the equipment no matter how the speed changes. The fan speed is proportional to the air volume, that is, the larger the air volume, the higher the fan speed.

The pressure characteristics of Roots blower mainly include the following aspects: within a certain pressure range, system changes will affect the pressure.

① The pressure of the equipment is adaptive and changes with the system resistance.

② When the pressure changes, the flow changes very little, because Roots blower has the exhaust characteristics of forced ventilation.

According to the above characteristics, we can change the fan pressure in the following ways.

① Pressure is required to replace the system. In short: change the size of the air outlet. Larger money and smaller boost.

② Adjust the working clearance of the equipment.

③ Install a pressure relief valve on the equipment.

Roots blower is a rotary compressor, which uses two blade rotors to move relative in the cylinder to compress and transmit gas. Before the Roots blower is officially put into operation, a period of trial operation is required to ensure normal operation. Here is a brief introduction for everyone:

1. Open the inlet and exhaust valves, turn on the power at the beginning of the load, and verify the direction of rotation. The cooling water fan must be connected to the cooling water before starting.

2. Run 20-30 minutes after no-load startup to check abnormal vibration and heat. If any abnormality occurs, please stop immediately and find out the reason. The abnormal phenomenon is mainly caused by poor installation or misalignment of the coupling, as well as other conditions, such as improper lubricating oil level.

3. Operate under normal load for 2-3 hours, and observe the temperature and vibration of each component at the same time.

4. During operation, please pay attention to the value displayed by the ammeter. In case of any abnormality, please stop the machine immediately for inspection. Most of the reasons are caused by system overpressure.