Water ring vacuum pump cavitation prevention methods you know -

cavitation is caused by the evaporation of the liquid, liquid to gas molecules escape is called 'gasification'. After vacuum pump cavitation, will not only damage the over-current components, also can produce noise and vibration, and resulting in a decline in the performance of the pump. In serious cases, the pump the liquid will stop, and will not be able to work properly. Water ring vacuum pump in cavitation state short running, which leads to the noise and vibration of the pump increases, even damage the pump. How to prevent cavitation? Vacuum pump to teach you some good methods.

1, increase the quantity of heat of water

as a result of vacuum freezing water temperature will lead to a sharp rise in the pumping energy, so the vacuum pump seal water heat must be lower than the corresponding to the exhaust pressure saturation heat, otherwise it will cause a vacuum pump impeller cavitation. Therefore, increasing the quantity of heat of water to prevent cavitation.

2, correct selection of water ring vacuum pump

in the selection phase, should choose to vacuum pump suction pressure and hot water, to avoid vacuum pump cavitation pressure range, due to which prevent the vacuum pump running in the area of the critical vacuum or critical vacuum exhaust pressure, and to avoid cavitation production.

3, cavitation of equipment protection tube

this equipment has the belt cavitation protecting tube of vacuum water pump. Cavitation in the cavity during the compression of bubble burst. Introduction of high-pressure non-condensable gas can not timely supplement from within a space due to the bubble burst. Cavitation damage to the pump and increase caused by the cavitation noise and vibration. Water ring vacuum pump type, are all equipped with anti cavitation protection function, to avoid cavitation phenomenon.

four, pump impeller, the impeller and other accessories by strong cavitation erosion resistance materials

resistance to cavitation was very obvious differences between different materials. There are many factors affect the material anti stripping force. Usually, high hardness and high elastic material has strong resistance to spin off power. Coating, for example, steps of the impeller is relatively small, and epoxy resin, nylon for non-metallic powder and polyurethane coating. Also has achieved in the flow channel for alloy or spraying alloy welding to prevent cavitation damage, such as stainless steel wire welding.

reading this article also read about water ring vacuum pump compression phenomenon and compression insufficient phenomenon.

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