Hydraulic valves are automatic components operated by pressure oil. It is normally used with electromagnetic pressure distribution valve, can be used for remote control of the oil, gas, water pipeline system of hydropower station on and off, commonly used for clamping, control, lubrication and additional oil routes. This is single person lifts.
The following are several hydraulic valves commonly used in the elevator:
1. Manual or electromagnetic directional valve
Reversing valve, also known as Chris valve, can be a multi-directional adjustment, timely alter the flow direction of fluid, mostly used in tiny flow occasions. When working, simply turn the handwheel to alter the flow direction of the working fluid through the valve disc. It can realize hydraulic oil flow communication, cutting off and reversing, as well as pressure relief valve and sequence action control.
2. Relief valve
In the system to play a safety protection role. When the system pressure exceeds the specified value, the safety valve is opened, and part of the gas in the system is discharged into the atmosphere, so that the system pressure does not exceed the allowable value to ensure the normal operation of the system. No accidents due to excessive pressure. In the process of use, we should pay attention to regular inspection and cleaning, and take reasonable measures to ensure the safety of the safety valve.
3. Throttle valve
It is a valve that controls the flow of fluid by changing the throttle section or throttle length. Usually only used for load changes or high speed stability requirements are not high. When there is sediment in the throttle valve, the elevator will stop the engine or the machine can not start, and the movement is moderate and the speed increases suddenly, gravely affecting the safety of aerial work.
4, balance valve
A special function valve. What makes it special is the distinction between function and the use of place. In some industries, because the pressure difference or flow difference of each part of the pipeline or vessel is large, in order to reduce or balance the difference, a valve is installed between the corresponding pipeline or vessel to adjust the relative balance of pressure. Side, or by means of split to achieve flow balance.