need Variable displacement gear pump theory
need Variable displacement gear pump theory
(OP)
Hi,
I need details of Variable displacement gear pump like theory,net links,material spects etc
thanks in before
john
I need details of Variable displacement gear pump like theory,net links,material spects etc
thanks in before
john





RE: need Variable displacement gear pump theory
Does it have to be a gear pump?
RE: need Variable displacement gear pump theory
thanx for ur quick reply
Yes,particularly we need gear pump only
thanx
nagaraj
RE: need Variable displacement gear pump theory
The are some lube pumps that vary the flow by sliding the gears to vary the contact ratio between the teeth, but these are all low pressure and 8000 RPM is very high speed...
Sorry I can't help more, good luck with your search.
RE: need Variable displacement gear pump theory
Bud Trinkel CFPE
HYDRA-PNEU CONSULTING, INC.
fluidpower1 @ hotmail.com
http://www.fluidpower1.us
RE: need Variable displacement gear pump theory
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Bud Trinkel CFPE
HYDRA-PNEU CONSULTING, INC.
fluidpower1 @ hotmail.com
http://www.fluidpower1.us
RE: need Variable displacement gear pump theory
RE: need Variable displacement gear pump theory
However, some gear pump assemblies are manufactured with "load sensing" capability. This seems to imply variable displacement, but in reality it does not. A "load sensing" gear pump has incorported into it's outlet side (or attached to its outlet side) a "load sensing" flow control valve (similar to the LS flow dividers used for steering circuits). The load sense signal controls the spool of this flow control valve and the spool, in turn, diverts flow exiting the gear pump so that the actuator attached to the load receives the flow rate called for by the control orifice.
Bill O'Donnell
RE: need Variable displacement gear pump theory
the 'load sensing' also usually varies the relief valve/unloading flow control setting such that the excess flow is not dumping at full relief setting.
kcj