You know what the principle of a one-way throttle valve is, and where is it generally used?

This article mainly introduces the working principle of the throttle valve. Before introducing the principle, let us briefly understand what a throttle is.

 

Simply put, a throttle is a structure that regulates the pressure of a fluid, and regulates the amount of air entering the engine to regulate the output of the engine.

 

Then what is a one-way throttle valve? The throttle valve and the check valve are connected in parallel to form a check valve. Check valve is a combination of check valve and throttle in parallel.

 

The throttle does not work in the direction of the valve. In the opposite direction, the oil cannot pass through the check valve and is throttled. It is usually used to control the oil return adjustment of a double-acting cylinder.

 

A throttle is a valve that controls the flow of fluid by changing the throttle portion or the length of the throttle.

 

Throttle valves and check valves are simple flow control valves. In the hydraulic system of the fixed pump, the throttle valve and the safety valve cooperate to form three throttle speed control systems, that is, a throttle valve throttle adjustment system, an oil return throttle control system and a bypass throttle speed control system.

 

The performance requirements of the throttle valve are as follows:

 

1. The flow adjustment range is large, and the flow pressure difference changes smoothly; 2. The internal leakage is small, and if there is an external leakage port, the external leakage is also small; 3. The adjustment torque is small. The action is sensitive.

 

Throttle valve without negative flow feedback function can not make up for the instability caused by load changes. It is typically used only in applications where the load does not change significantly or the speed stability is not high.

 

In addition, because the flow of the throttle valve depends not only on the area of ​​the orifice, but also on the pressure difference before and after the orifice, the valve stiffness is very small, so it is only suitable for actuator load changes and speed stability.