Hydraulic Valve Installation
Hydraulic valve is a pressure oil operation of the automation components, which is controlled by the pressure valve oil pressure, usually combined with the use of electromagnetic pressure valve can be used for long-distance control of hydropower station oil, gas, water pipe system off. Hydraulic Valves Commonly used in clamping, control, lubrication and other oil. There are direct and pilot type of the points, multi-use pilot type.
Hydraulic valve is used to reduce and stabilize the oil pressure of a branch in the system, commonly used in clamping, control, lubrication and other oil. There are direct-acting, pilot type, Hydraulic Valves superposition of the points.
Hydraulic valve classification
According to the control method classification: manual, electronic control, hydraulic control
According to the function classification: flow valve (throttle, speed control valve, shunt valve), pressure valve (relief valve, pressure reducing valve, sequence valve, unloading valve), the direction valve (electromagnetic valve To the valve, check valve, hydraulic check valve)
Hydraulic valve according to the installation method points: plate valve, tube valve, stack valve, threaded cartridge valve, cover valve
According to the way of manipulation: manual valve, motor valve, electric valve, hydraulic valve, electro-hydraulic valve.
According to the use of one-way valve and valve. Check valve: only allows the fluid in the pipeline in one direction, reverse that cut off. Directional valve: change the relationship between the different piping. According to the number of points in the valve body in the body of the two, three, etc .; Hydraulic Valves according to the number of channels controlled by two links, three links, four links, five pass; according to the spool drive way manual, motor, electric , Hydraulic and so on.
According to the use of overflow valve, pressure relief valve and sequence valve. ⑴ relief valve: to control the hydraulic system to achieve the set pressure to maintain a constant state. The relief valve used for overload protection is called a safety valve. When the system fails, the pressure rises to the limit may cause damage, the valve port will open and overflow to ensure the safety of the system. ⑵ pressure reducing valve: can control the branch circuit to get lower than the main circuit pressure pressure. Hydraulic Valves Pressure relief valve according to its control of the pressure function is different, but also can be divided into the value of the pressure relief valve (output pressure is constant) ﹑ differential pressure valve (input and output pressure difference is set) and the ratio of pressure reducing valve (Input and output pressure to maintain a certain ratio). ⑶ sequence valve: can make an implementation of components (such as hydraulic cylinders, hydraulic motors, etc.) after the action, Hydraulic Valves and then in order to make other executive elements. The pressure generated by the pump first to promote the movement of the hydraulic cylinder 1 at the same time through the sequence of the valve inlet role in the area A, when the hydraulic cylinder 1 after the movement is complete, the pressure increases, the role of the area A upward thrust greater than the spring Value, the spool up so that the inlet and outlet connected to the hydraulic cylinder 2 movement.