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The Structure Of Hydraulic Valve Is Simple And Compact

Ningbo E.H Hydraulic Co.,Ltd | Updated: Nov 01, 2017

Hydraulic valve is a kind of pressure oil operation automation element, it is controlled by the pressure valve, usually with the solenoid valve combination, can be used for long-distance control of hydropower station oil, gas, water pipe system of the break. Often used for clamping, control, Hydraulic Valves lubrication and other oil circuits. There are direct type and pilot type of the division, more use of pilot. According to the control method can be divided into manual, electric control, liquid control.

The basic structure of the hydraulic valve mainly includes the valve core, the valve body and the driving valve core in the valve body to do the relative movement control device. The main form of the spool is the slide valve, the cone valve and the ball valve, and the valve body is apart from the valve body hole or seat hole which is matched with the valve core. There is also the inlet and outlet of the external tubing and the outlet; the device that drives the valve core in the valve body can be a hand-adjustable mechanism, or a spring or electromagnet, and some occasions are driven by liquid pressure.

In the working principle, the hydraulic valve is using the valve core in the valve body relative movement to control the valve mouth of the on-off and opening size, Hydraulic Valves in order to achieve pressure, flow and direction control.

The hydraulic valve includes the valve core, the body and the drive spool in the valve body to make the relative motion device. In the hydraulic system is used to control the flow of fluid pressure, flow and direction, to ensure that the implementation of components in accordance with the requirements of the work. Hydraulic Valves belongs to the control element.

Basic working principle of hydraulic valve: Using the valve core in the valve body as relative movement to control the valve mouth and the size of the valve mouth, to achieve pressure, flow and direction control; and the flow through the valve mouth and the valve mouth before and after the pressure difference and valve area, Hydraulic Valves always meet the pressure flow equation.

Characteristics of Hydraulic Valves

1. The movement is nimble, Hydraulic Valves the work is stable and reliable, the impact, the vibration and the noise are as small as possible.

2. The resistance loss of the oil flow through the valve is small.

3. The sealing is better and the leakage is small.

4. Simple and compact structure, small size, large versatility, long life.

Hydraulic valve is used to control the flow direction of oil in the hydraulic system or adjust its pressure and flow, so it can be divided into directional valve, pressure valve and flow valve three categories. A valve of the same shape can have different functions because of the different mechanism of action. Pressure valves and flow valves control the pressure and flow of the system using the throttling effect of the flow cross-section, while the directional valve controls the flow direction of the oil by using the change of the channel. That is to say, although there are various types of hydraulic valves, Hydraulic Valves there are some basic points of common between them.

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