Dalan Hydraulic Motor Interpretation Classification and Working Principle of Hydraulic System Control Valve

Are you clear about the classification and working principle of hydraulic system control valves? The following Dalan hydraulic motor will give you a detailed explanation of the classification and working principle of the hydraulic system control valve. Are you clear? The following Dalan hydraulic motor will give you a detailed explanation.

Hydraulic system control valves can be divided into pressure control valves, flow control valves and directional control valves.

1. Pressure control valves can be divided into relief valves, pressure reducing valves and sequence valves according to their application.

1 Overflow valve: It can control the hydraulic system to maintain a constant state when the set pressure is reached. The relief valve used for overload protection is called a safety valve. When the system fails and the pressure rises to a limit value that may cause damage, the valve port will open the overflow to ensure the safety of the system.

2 Pressure reducing valve: It can control the branch circuit to obtain a stable pressure lower than the oil pressure of the main circuit. The pressure reducing valve has different pressure functions controlled by it, and can be divided into fixed value pressure reducing valve, differential pressure reducing valve and proportional pressure reducing valve.

3 sequence valve: After an actuator is actuated, the other actuators are actuated in sequence.

2. The flow control valve adjusts the flow rate by adjusting the throttle port area between the valve core and the valve body and the local resistance generated by the valve body, thereby controlling the moving speed of the actuator.

Flow control valves are divided into five types according to their use:

1 Throttle valve: After setting the throttle area, the throttle valve can basically keep the moving speed of the actuator with little change in load pressure and low uniformity of motion uniformity.

2 speed control valve: When the load pressure changes, the inlet and outlet pressure difference of the throttle valve can be kept constant.

3 Diverter valve: Regardless of the size of the load, the two actuators of the same oil source can be equal flow valve or synchronous valve; and the proportionally distributed flow rate is proportional to the diverter valve.

4 Collector: It is a proportional distribution of the flow into the collector valve, acting opposite to the diverter valve.

5 split flow manifold: It has the functions of diverter valve and collector valve.

3. The directional control valve is divided into a check valve and a reversing valve according to the purpose.

1 check valve: only allows the fluid to be unidirectionally connected in the pipeline, and the reverse is cut off.

2 Reversing valve: change the on-off relationship between different pipelines, according to the working position of the valve core in the valve body, two digits, three digits, etc.; according to the number of channels controlled, two-way, three-way, four-way, Five links, etc.;

According to the spool driving method, manual, motorized, electric, hydraulic, etc.

The hydraulic solenoid valve has a closed cavity, and there are through holes at different positions. Each hole is connected with a different oil pipe. The middle of the cavity is a piston. On both sides are two electromagnets. Which side of the magnet coil is energized and the valve body is attracted to Which side, by controlling the movement of the valve body to open or close different oil drain holes, and the oil inlet hole is normally open, the hydraulic oil will enter different oil drain pipes, and then the oil pressure will push the piston of the oil cylinder, the piston The piston rod is also driven, and the piston rod drives the mechanical device, so that the mechanical movement is controlled by controlling the current of the electromagnet to be turned on and off.







----- Editor-in-Chief: Dalan Oil Pump Motor 02-Procurement Consultant

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