(二) 调速阀和溢流节流阀 在实际工作中,有很多地方都希望执行机构的运动速度保持不变,但只靠节流阀达不到这个要求,因而有了调速阀和溢流节流阀。 调速阀(由节流阀和减压阀组成)和溢流节流阀(由溢流阀和节流阀并联组成),两者功用相同,通过阀的流量基本不变,都能使执行机构速度保持稳定,但性能并不完全一样。对调速阀来说,油泵输出的压力是一定的,它 (2) Speed ​​control valve and overflow throttle valve In practical operation, there are many places where the movement speed of the actuator is expected to remain unchanged. However, the throttle valve alone cannot meet this requirement. Therefore, there is a speed control valve and a speed control valve. Overflow throttle valve. Speed ​​control valve (composed of throttle valve and pressure reducing valve) and overflow throttle valve (composed of relief valve and throttle valve), both have the same function, and the flow through the valve is basically unchanged. Institutional speed remains stable but performance is not exactly the same. For the speed control valve, the output pressure of the oil pump is certain, it