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May 11, 2022 View:

How To Avoid Rotary Lobe Pump Cavitation

Liquid at a certain temperature, for some reason the pressure at the inlet of the pump is lower than the vaporization pressure of the liquid at that temperature, the liquid begins to vaporize and produce vapor bubbles, and with the liquid flow into the high-pressure area, the vapor bubble rupture, the surrounding liquid quickly fill the original vapor bubble cavity, resulting in hydraulic impact. This vapour bubble generation, development and rupture phenomenon is known as vapour corrosion.

So, what hazards does cavitation in rotor pumps bring? How can we avoid it in the normal operation of the lobe pump? The following Ace lobe pump's will tell you.

Hazards of cavitation in lobe pumps.

1, cavitation is a unique phenomenon of hydraulic machinery, it brings many serious consequences.

2、Cavitation causes stripping and damage to overflow components;

3、Cavitation degrades the performance of the lobe pump;

4、Cavitation causes noise and vibration in lobe pumps.

Measures to avoid cavitation in lobe pumps.

1. In the design, the rate of change of each section of the circulation section should be made small, while the wall through which it passes should strive to be smooth.

2, in a certain suction height, the lobe pump's revolution number increase should be a certain limit, because the larger the revolution number, the larger the flow, the smaller the suction height. Therefore, increase the lobe pump's revolution number will inevitably reduce its suction height. Therefore, in a certain suction height, increase the number of revolutions is a certain limit, otherwise it will occur cavitation and lead to the normal operation of the pump damage.

3. It is advisable to keep the lobe pump constantly operating near its design working conditions.

4. minimise resistance in the inlet pipe, which should therefore be both straight and short, and correctly determine the suction height of the lobe pump.

5. Use appropriate materials for components in areas prone to cavitation.