General law of KCB hydraulic gear oil pump

The universal law of the pump, the mechanical energy into liquid pressure energy components called hydraulic gear pump C, the heart of the system, the role of the hydraulic system to provide enough pressure oil C, a variety of forms, such as gear pump, blade ticket, plunger pump, etc..

Although there are many kinds of hydraulic pumps, they all have a common rule.

The following external gear pump as an example to illustrate this law.

In gear with the same parameters l and mesh with each other, 2 3 contained in the pump body and cover (collar or side panel) (not shown) of the figure of closed space, two gears addendum and the gap between the hole in the pump body surface is very small, gear face the clearance between the cover plate (collar or side panel) and also is very small, so the gear mesh point of contact line along tooth width direction to form the west a separate letter

Closed oil cavity.

When the driving gear 1 rotates clockwise in the direction shown in the figure, the closed volume to the left of the engagement point becomes larger, resulting in a local vacuum. The oil in the oil tank enters the space under the action of atmospheric pressure, forming an oil suction cavity T.

On the other side, the closed volume becomes smaller and the oil is hydraulic out to form an oil drainage chamber P.

This is the gear pump oil suction and oil pressure process.

When the gear pump rotates continuously, the space volume of the oil suction chamber and the oil pressure chamber continuously changes, the gear pump continuously absorbs oil and pressure oil.

Obviously, in the working process of the gear pump, as long as the direction of rotation of the two gears is unchanged, the position of the suction and drainage cavity is also determined to be unchanged.

The tooth surface contact line at the meshing point here always plays the role of separating high and low pressure cavities.

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