The throttle valve used in the cutting machine controls the flow of fluid by changing the throttle section or throttle length. The parallel connection of the throttle valve and the check valve can be combined into a check valve. Throttle valves and one-way throttle valves are simple flow control valves. In the hydraulic system of the quantitative pump of the cutting machine, the throttle valve and the safety valve cooperate with each other to form three throttle speed control systems: an intake throttle speed control system, a return throttle speed control system, and a bypass throttle speed control system. The throttle valve does not have a negative flow feedback function and cannot compensate for unstable speed due to load changes. They are usually only used when the load change is small or the speed stability requirements are not high.
What is the function of the safety valve used in the cutting machine manufacturer? The pressure relief valve is a hydraulic control valve, which mainly plays the role of setting pressure relief, stability, system unloading and safety protection in the hydraulic equipment of the cutting machine. When assembling or using the safety valve, the O-ring and the combined sealing ring are damaged, or the installation screws and pipe joints are loose, which may cause undesirable leakage. If the poppet valve or main valve core is too worn, or the sealing surface is not in good contact, it will also cause excessive internal leakage and even affect normal operation. What is the function of the check valve of the cutting machine? Check valve, also known as check valve, is used to prevent the oil in the hydraulic system of cutting machine from flowing backward. There are two types of check valves: straight and right angle valves. The straight-through check valve is installed on the pipeline through a threaded connection. Right-angle check valves are available with threaded connections, plate connections and flange connections.
The hydraulic control check valve, also known as the lock valve and pressure holding valve, is the same as the check valve to prevent the reverse flow of oil. However, when the oil flow is required to reverse flow in the hydraulic circuit, the oil pressure can be controlled and the check valve can be opened to allow the oil flow to flow in both directions. The pilot-operated check valve uses a conical spool, which has good sealing performance. When the oil pipeline needs to be closed, the valve can be used as a one-way locking device to maintain pressure. There are two ways to control oil leakage through hydraulic check valves: internal and external. In oil pipelines with no back pressure at the oil flow reverse outlet, the internal leakage type can be used; otherwise, the external leakage type must be used to reduce the control oil pressure.