Have any Questions?

+86 18626835909

May 11, 2022 View:

The Difference Between Several Common Flow Adjustment Methods Of Rotary Lobe Pumps

Common lobe pump flow regulation methods are: parallel pump control, inverter speed control, control of regulating valves, bypass control, etc. So, what are the specific differences between them? Today Ace lobe pump's will take you through!

I. Parallel pump control

In systems where larger flows are required, several low power pumps can be used in parallel instead of one large pump. Control of the flow rate by controlling the start and stop of the pump can be achieved more efficiently if used in conjunction with a frequency converter or soft starter.

II. Regulating valve control

The operating point is adjusted by means of a regulating valve. This type of adjustment increases hydraulic losses and reduces pump efficiency. And no energy savings can be achieved.

III. Bypass control

A pipe with a valve is connected in parallel to the discharge line of the main pipe. The flow of liquid is controlled by an on/off valve control.

IV. Inverter control

The advantages of inverter control over the energy losses of control valves and bypass control are.

a. Energy saving: Compared to traditional flow control, inverter controlled flow is more energy efficient.

b. Precise control: accurate adjustment of the required pressure and flow, PID control to increase control accuracy.

c. Less maintenance and longer motor life: frequent starts and stops can be achieved, reducing the start current shock.

Zhejiang Ace professional lobe pump, rotary lobe pump manufacturers, such as pump selection and quotation, please call: +086-18626835909