Zupčasta pumpa s rotirajućim unutrašnjim elementima jest pumpa s pozitivnom istisninom koja koristi sklop pogonskog i prijenosnog zupčanika kako bi generirala protok. Sklop je kompenziran pomoću polukružnog elementa smještenog uz unutrašnji zupčanik, sve unutar vanjskog zupčanika. Kako pogonski zupčanik pokreće prijenosni zupčanik, prostor koji nastane uslijed kompenzacije zupčanika pomoću polukružnog elementa i ispreplitanja zubaca zupčanika pomiče tekućinu izbacujući ju kroz izlazni otvor.

Za koje namjene i tekućine se može koristiti?

An internal rotary gear pump employs a positive displacement principle. The pump features a casing in which a dual gear (an outer rotor gear and an internal idler gear) and crescent assembly is housed. As the rotor gear begins to turn, the idler gear rotates with the teeth beginning to mesh accordingly. It is the space between these gears and the meshing action which both draws in the fluid and displaces it. The crescent shape both offsets the idler gear and provides a seal between the suction and discharge ports.

Read more here about the working principles

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