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Opinions on screw pumps?

Opinions on screw pumps?

Opinions on screw pumps?

(OP)
I'm searching for a reliable pump for chemical pulp pumping in elevated consistency (10-15 %). What's your opinion on screw pumps? Can they handle thick stock better than centrifugal pump systems? Do they actually require less power? Reliability?

All opinions are welcomed!

RE: Opinions on screw pumps?

Unless you are pumping more than 100 mgd of the stuff, I would say they are a nightmare.  The higer solids will only add to the problems typical of this type of pump such as trough wear, screw shaft deflection and on and on....

Look for a good progressive cavity type pump system or a reciprocating type.  I used a company called Penn Valley Pumps on a fiberglass sludge system with solids in your range and it is still working to this day.

Good luck

Bob

RE: Opinions on screw pumps?

In general, we don't use centrifugal pumps to pump high-viscosity fluid(>2500 SSU) or solid. Try internal gear pump or lobe pump(for solid).

RE: Opinions on screw pumps?

If I was a pump vendor I would recommend the most expensive pump. Very low flow rate 5 m3/hr could be low for some applications, but can mean overkill in others.

Please be specific  !!!

Steven van Els
SAvanEls@cq-link.sr

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