subject: Liquid Ring Vacuum Pumps, Pros And Cons [print this page] There are several different types of vacuum pumps. It is impossible to go through every option of a vacuum pump in one article, but for fun let's take a look at a liquid ring vacuum pump and some of the pros and cons of that specific type of vacuum pump.
The liquid ring vacuum pump is commonly referred to as the wet vacuum pump. That seems like a pretty obvious conclusion since the word liquid insinuates some kind of liquid involved. The basic process of the liquid ring vacuum pump is that there is a found multi finned rotor that spins inside of an elliptical casing. The casing will be full of water or some other type of liquid that is safe for the vacuum pump and the rotor will throw the liquid in an outward motion onto a stationary casing.
The solid ring of liquid will rotate at the same speed as the rotor and then a casing that is shaped in an elliptical shape will cause the rotating liquid to recede from the rotor. As this motion happens it will draw in gas and vapors through the inlet ports and then will discharge the gases through the outlet ports. This might sound confusing, but with a liquid ring vacuum pump it is important to recognize how important the liquid is to the process.
It is important to recognize that a liquid ring vacuum pump is available in all different types of alloys. The end of the vacuum is determined by the amount of vapor pressure from the liquid. One of the great things about this type of vacuum pump is that it does not cause problems that can be caused by a pulsating flow of liquid.
Often times when we purchase anything we want to know that some basic things won't cause damage to our purchase. Water and other liquids have a reputation of eventually causing damage. With this type of vacuum pump you can take comfort that the steady flow of the liquid entering the pump will not cause damage. It does require power so you will want to consider having a separate chamber or section that can help prevent solid liquid stream going into the actual pump.
A few of the challenges of a liquid ring vacuum pump is that it is limited on the end vacuum and heavy hydraulic loads. It is based on the amount of pressure from the liquid and that can sometimes be challenging to manage. Filters are an additional cost to this type of vacuum pump. It is also important to recognize that one of the greatest challenges in the temperature of the liquid.
These are some pretty basic things to consider with the liquid ring vacuum pump. It is good to understand how it works and some of the pros and cons.
