Electro-hydraulic push rod plunger valve belongs to the technical field of control valve.The valve consists of a body, a board valve and a control device. There are three board valves and four bodies in the upper, middle and lower parts. Three board valves and four bodies are interlaced in series.Upper insert plate valve is provided with manual spiral control hand wheel;Middle and lower plate valves are equipped with hydraulically controlled electro-hydraulic push rods, which are connected with plate valves through bracket installation.The utility model has the advantages of reasonable and simple structure, easy manufacturing, low cost and good service performance.Electro-hydraulic disc valve is free of stuck materials and leakage, convenient for maintenance, good quantity of discharging materials, high working efficiency and long service life of the equipment.It can be widely used in the fields of metallurgy, chemical industry, food and so on, which need quantitative discharge in modern industry.Electro-hydraulic push rod insert valve is suitable for reciprocating push and pull straight (or reciprocating rotation Angle) movement, it can be used for the main control equipment of the flow and conveying quantity of powder material, grain material, granule material and small piece material, also can be used for long-distance and high-altitude dangerous area, and can be connected with computer network for centralized (program) control.Now widely used in metallurgy, mining, coal, electricity, machinery, food, cement, chemical industry, water conservancy, transportation and other industries, is an indispensable general power source.
Principle and function of electro-hydraulic push rod plunger valve:
1.Stepless speed adjustment can be carried out within the rated speed range according to user requirements.
2.according to user requirements, in the rated output force range of stepless adjustment push, pull.
3.Stepless adjustment can be made within the rated travel range according to user requirements.
4.Working principle: the electro-hydraulic push rod takes the motor as the power source and rotates in the forward (reverse) direction through the motor, so that the hydraulic oil can output the pressure oil through the two-way gear pump and send it to the working cylinder through the oil circuit integration block to realize the reciprocating movement of the piston rod.
5.overload automatic protection function: when the electro-hydraulic push rod works, if the external force on the piston rod exceeds the rated output force or the piston reaches the end point, the motor is still rotating, then the oil pressure in the oil circuit increases to the set pressure, the overflow valve quickly and accurately overflow, to achieve automatic overload protection.The motor is running, but it won't burn out.
6.Self-locking function: pressure self-locking mechanism is designed in the oil circuit integrated block of the electro-hydraulic push rod. When the motor stops rotating, the piston rod immediately stays in the position, and the pressure oil is in the state of pressure maintenance.
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