is it a gear with 2 idler gears, to prevent the fluid te go around and around?
just asking.....Lute
2006-08-01 11:42:20 · 4 answers · asked by ljmuller 1 in Science & Mathematics ➔ Engineering
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http://www.hydraulic-equipment-manufacturers.com/hydraulic-articles1.html
2006-08-01 12:05:39 · answer #1 · answered by Anonymous · 4⤊ 0⤋
The pump comprises two gears rotating in opposite directions;one clockwise and the other anti-clockwise.The liquid is trapped between the pump casing and the gear teeth, and is carried onwards when the gears rotate. At the outlet side, when the two gears mesh, the liquid is squeezed out from between the teeth.The viscosity of the liquid should be high so that it does not leak out from between the teeth and the pump casing. So the pump is suitable only for viscous liquids like lubricating oil.
As the liquid is displaced positively by the gears, its a type of positive displacement pump.
2006-08-02 00:08:37 · answer #2 · answered by kash2250 1 · 0⤊ 0⤋
there are many kinds of positive displacement pumps
there are even several kinds of gear pumps in use
the simplest is just two rotating gears
close tolerance keeps the fluid from going around the top and bottom as quickly as it is being forced through the mesh point
this develops pressure and you get flow
there are also several kinds of progressive cavity pumps, with the simplest probably being a screw like an auger in a tube, with the auger flights getting closer together as they go down the screw
piston style positive displacement pumps are also common, they work like a syringe, or an internal combustion engine
2006-08-01 18:56:35 · answer #3 · answered by enginerd 6 · 0⤊ 0⤋
Positive Displacement unlinke centrifugal pumps will not be working on head vs flow relationship. They are constant volume moving machines. The Capacity of them is dependent on volume of the chamber rather than upstream and downstream pressure
2006-08-02 04:20:23 · answer #4 · answered by Koyyalamudi R 2 · 0⤊ 0⤋