The hydraulic regulating system of the coal mining machine is composed of which hydraulic components
Control element The control element (i.e., various hydraulic valves) controls and regulates the pressure, flow and direction of the fluid in the hydraulic system. Hydraulic valves can be divided into pressure control valves, flow control valves and directional control valves according to the control function. Pressure control valves include overflow valve (relief valve), pressure relief valve, sequence valve, pressure relay, etc. Flow control valves include throttle valves, adjustment valves, and diverter collector valves; Directional control valves consist of one-way valve, liquid control one-way valve, shuttle valve, reversing valve, etc. According to the control mode, the hydraulic valve can be divided into switch control valve, fixed value control valve and proportional control valve.
actuators Executive components (such as hydraulic cylinders and hydraulic motors) is the function of the liquid pressure can be converted into mechanical energy, driving load for a straight line reciprocating movement or rotational motion.
Consists of five parts: the power component, the execution component, the control element, the auxiliary component (the attachment) and the hydraulic oil. Power element The role of dynamic components is the prime mover can convert the mechanical energy of liquid pressure, refers to the oil pump in the hydraulic system, it supplies power to the entire hydraulic system. The structure of hydraulic pump consists of gear pump, vane pump, plunger pump and screw pump.
Auxiliary components Auxiliary components including oil tank, oil filter, cooler, heater, accumulator, tubing and pipe joint, seal ring, quick change connectors, high pressure ball valve, hose assembly, the contact pressure, pressure gauge, oil level gauge, the oil temperature gauge, etc. Hydraulic oil Hydraulic oil is the medium of the energy transfer energy in hydraulic system, there are various kinds of mineral oil, emulsified liquid and hydraulic oil.
