Because of different applications and characteristics, hydraulic pressure control valves
have different types as well. The industry divides them into three types: directional control valves, pressure control valves and flow control valves. These three kinds of valves all have a very big advantage, that is they can be combined together to form into a new combined valve with multiple functions based on users’ requirements. This advantage can make the hydraulic system compact, as well as play the higher productivity of a valve. Learn something about the working principle and function of hydraulic pressure control valves is very useful.
are used to control the flow direction of the oil in hydraulic system or adjust the pressure and flow, so they can be divided into directional valves, pressure valves and flow valves. A valve with same shape may have different functions because of the different mechanisms of action. Pressure valves and flow valves can use the throttling action of flow-through section to control the pressure and flow while flow valves can change the flow-through channel to control the flow direction of oil.
So it means, in spite of the different types of hydraulic valves, there still have some basic common points. For example:
(1) for the structure, all the valves are consisted of body, spool (rotary valve or slide valve) and components which are used to drive the movement of spool (such as spring, electromagnet).
(2) for the working principle: the mouth size and differential pressure of all valves and the relationship between flows are all consistent with the orifice flow formula, only parameters different.
Through the analysis of working principle and function of hydraulic pressure control valves, we can know that this kind of valve is mainly used to change the mechanical energy of original motivation into fluid pressure energy.
After years of development, China’s hydraulic pressure control valves already have a very good foundation for development, so how to further improve the working principle and function of hydraulic pressure control valve works is the key point for businesses and researchers.