旋轉(zhuǎn)泵
旋轉(zhuǎn)泵應(yīng)用于不同的設(shè)計中，在流體動力系統(tǒng)中極其常用。今天最常用的旋轉(zhuǎn)泵是外齒輪泵、內(nèi)齒輪泵、擺線轉(zhuǎn)子泵、滑動葉片泵和螺旋泵。每種類型的泵都有優(yōu)點，適合于特定場合的應(yīng)用。
直齒齒輪泵，這種泵有兩個嚙合的齒輪在密封殼體內(nèi)轉(zhuǎn)動。第一個齒輪即主動輪的回轉(zhuǎn)引起第二個齒輪即從動輪的回轉(zhuǎn)。驅(qū)動軸通常連接到泵上面的齒輪上。
Rotary pumps
These are built in many different designs and are extremely popular in modern fluid-power system. The most common rotary-pump designs used today are spur-gear, generated-rotary , sliding-vane ,and screw pump ,each type has advantages that make it the most suitable for a given application .
Spur-gear pumps. these pumps have two mating gears are turned in a closely fitted casing. Rotation of one gear ,the driver causes the second ,or follower gear, to turn . the driving shaft is usually connected to the upper gear of the pump .