Could someone who knows a lot about Roots vacuum pumps explain it to me?
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I’m just starting to work with Roots vacuum pumps. How should the ratio between a Roots water ring unit, the Roots pump itself, and the pre-pump be determined?
Will you set up the system yourself? It’s usually the entire system
In front of the Roots pump, there should be a water ring pump or a liquid ring pump; the medium used varies – those that use water are called water ring pumps, while those that use other liquids are called XX liquid ring pumps. As for the arrangement, my understanding is that those requiring a higher vacuum level should be placed in the subsequent stage.
This should be selected directly based on the process parameters and the required vacuum level. The stage configuration of the Roots water ring vacuum pump unit is provided as a complete set by the equipment manufacturer.
What I mean is the pumping speed ratio. For example, if a Roots pump has a pumping capacity of 600 liters, and the ratio is 1:3, then the pumping speed of the pre-stage pump should be 200. So I would like to know what exactly this pumping speed ratio is – 1 to what? – or how to determine the pumping speed of the pre-stage pump
What I mean is the pumping speed ratio. For example, if a Roots pump has a pumping capacity of 600 liters, and the ratio is 1:3, then the pumping speed of the pre-stage pump should be 200. So I would like to know what exactly this pumping speed ratio is – 1 to what? – or how to determine the pumping speed of the pre-stage pump
What I mean is the pumping speed ratio. For example, if a Roots pump has a pumping capacity of 600 liters, and the ratio is 1:3, then the pumping speed of the pre-stage pump should be 200. So I would like to know what exactly this pumping speed ratio is – 1 to what? – or how to determine the pumping speed of the pre-stage pump
What I mean is the pumping speed ratio. For example, if a Roots pump has a pumping capacity of 600 liters, and the ratio is 1:3, then the pumping speed of the pre-stage pump should be 200. So I would like to know what exactly this pumping speed ratio is – 1 to what? – or how to determine the pumping speed of the pre-stage pump
We originally used a two-stage Roots pump combined with a two-stage screw pump; it broke down frequently, so we switched to a single-stage Roots pump along with a water ring vacuum pump. Now we have switched to a single-stage air ejector along with a water ring
Today, an experienced technician told me that the pumping speed ratio between a Roots pump and a water ring pump should ideally be between 1 to 2
If you really don’t understand, check Andorra’s vacuum design manual