意大利阿托斯直动式溢流阀,ATOS直动式溢流阀文档
当由于各种原因，空气被吸入油液中，或者在油液压力低于大气压时，
溶解在油液中的部分空气就会析出形成气泡，这些气泡在低压区时体积较大，
Over-flow area is very small, high flow rate, up to 200 m / s,
easy to cause uneven pressure distribution,
导式溢流阀调压失灵现象有二种情况：
种是调节调压手轮建立不起压力，或压力达不到额定数值；
另种调节手轮压力不下降，甚不断升压。
出现调压失灵，除阀芯因种种原因造成径向卡紧外，还有下列些原因：
pressure regulating spring deformation, etc., will also cause the cone valve vibration.
It is generally believed that the pilot valve is the source of noise generated by the source.
在高压情况下溢流时，导阀的轴向开口很小，仅0.003～0.006厘米。

意大利阿托斯直动式溢流阀,ATOS直动式溢流阀文档
过流面积很小，流速很高，可达200米/秒，易引起压力分布不均匀，
使锥阀径向力不平衡而产生振动。另外锥阀和锥阀座加工时产生的椭圆度、
导阀口的脏物粘住及调压弹簧变形等，也会引起锥阀的振动。
Oil bubbles in the rapid changes in the phenomenon of this phenomenon.
Sudden changes in the volume of the bubble will produce noise,
And because this process occurs in an instant, will cause local hydraulic shock and produce vibration.
The pilot valve and the main valve port of the pilot relief valve, the oil flow rate and pressure changes greatly,
It is prone to hole phenomenon, resulting in noise and vibration.
当随油液流到高压区时，受到压缩，体积突然变小或气泡消失；
反之，如在高压区时体积本来较小，而当流到低压区时，体积突然增大，
导型溢流阀的导阀部分是个易振部位如图3所示。
So that the radial force of the cone valve is not balanced and produce vibration.
Another cone valve and cone valve seat processing produced when the oval,
The mouth of the mouth of the dirt stickers and
所以般认为导阀是发生噪声的振源部位。