喷油螺杆油系统中,油循环的获得方法基本有两种:一种是利用压缩机排出压力,一种是利用油泵。用油泵有优点,但转速恒定下供油量不能随压缩机排压的高低而变(注:因无油泵压油也要消耗功);尤其油泵本身容易发生故障,严重时危害整台机器。利用排压(或 Injection screw system, the oil circulation obtained in two ways: one is the use of compressor discharge pressure, one is the use of oil pump. Oil pump has the advantage, but the constant speed of the oil supply can not vary with the level of the compressor discharge pressure (Note: due to no oil pump pressure also work); In particular, the pump itself is prone to failure, serious damage to the entire machine. Use pressure relief (or