liquid ring vacuum pumps/compressors

[Organikum]

I am searching for information (including plans/drawings) on liquid ring pumps on a non-industrial scale.

example of industrial:

Patent US6354808

Any information on this welcome. It´s the idea of a not to hard to build (or cheap to get) vacuuum pump/compressor, small and not to heavy with enough sucktion/vacuum and also pressure if needed for most popular applications here.

(I have several aspirators, I had an excellent Leybold rotary vane - 60kg heavy, I can handle a screwdriver, It has not to be "ghetto", I am after liquid ring now nothing else. thanks for staying on topic    )

ORG