About the structure of the electric gate valve is introduced what is electric valve, electric valve, in a nutshell is to use control valve electric actuator, so as to realize the valve opened closed. It can be divided into fluctuation two parts, the upper part for electric actuator, the lower part of the valve. Electric valve is divided into two kinds: one kind for quarter-turn electric valve: from the Angle of travel of the electric actuator using with Angle of valve, valve within 90 - degree spin control pipe flow on and off; Another to keep travel electric valve: by straight travel electric actuator using with straight trip valve, valve plate up and down movement control pipe flow on and off. Which is equipped on a high degree of automation equipment, this valve should be installed level adjustment precision is best. Principle: electric valve operating principle: electric valve usually linked by electric actuators and valves, become a motorized valve after installation and debugging. Electric valve using electricity as the power to turn on the electric actuator drive valve, switch, adjust the action of valve. So as to achieve medium switch or adjust the purpose of the pipes. Solenoid valve is a class of electric valve; Is the use of the magnetic field generated by electromagnetic coil to pull the valve core, thereby change the on-off valve body, power coil, valve core will depend on the pressure of the spring return. Electric gate structure (1) using pressure self-tightening sealing valve or valve body, valve cover gasket sealing structure, reliable! The use of safe and reliable. (2) the disc adopts double ram with universal among top structure, can automatically adjust the disc and seat sealing surface alignment, ensure that the valve seal. At the same time, the structure, convenient maintenance, saving cost, disc replacement is better. (3) disc and seat sealing surface with chromium cobalt tungsten carbide by plasma spray welding, sealing surface hardness, friction resistance, abrasion resistance, long service life. (4) stem with nitriding steel, the surface nitriding process, high hardness, abrasion resistance, corrosion resistance, long service life. (5) electric device is equipped with a torque control mechanism, operating mechanism, electric and hand switching mechanism. In addition to on-site operation, but also can carry out remote operation, PLC control, intelligent control 4 ~ 20 ma current input and output, etc. 6 or hit by manual handwheel manual valves. Reducing valve operating force. can be installed in any position 7, at the same time, choose according to the temperature of the medium and medium carbon steel or alloy steel valves. End the installation and debugging for the first time, the valve must be manually opened to about half of the position, in order to avoid the motor phase sequence denso take the lead to valve or damaged. The application range of the electric gate valve 1, oil, natural gas pipeline. Flat gate valve with flow guide hole is also easy to clean pipeline. 2, product oil pipeline and storage equipment. 3, the extraction of oil, natural gas wellhead, also is the Christmas tree with valve. 4, with suspended particles of medium pipeline. 5, city gas pipeline. 6, tap water engineering. About the operating mechanism of pneumatic Industrial Valves 1 the open-close direction of pneumatic valve operation, all should be clockwise to shut down. 2 as the pneumatic valve in the pipeline, often artificial opening and closing, opening and closing of revolution shoulds not be too much, is the large diameter valves also should be within 200-600 RPM. 3 for the purposes of a person's opening and closing operation, the plumber pressure conditions, the largest open-close torque appropriate for n - 240 m。 4 air valve opening and closing operation side should be square tenon, standard and size, and face to the ground, so that people can be directly from the ground. Valves shall not apply to the underground pipe network with roulette. 5 degree of pneumatic valve opening and closing the display panel (1) pneumatic valve opening and closing degree of scale line, cover should be cast in the transmission or conversion direction after the show plate shell, all face to the ground, scale line brush on phosphor powder, as a prominent; (2) of the dial needle material under the condition of management better available stainless steel plate, or paint for steel plate, do not use the aluminum skin production; (3) dial needle striking, fixation, once the open-close adjustment accurately, the rivet lock. 6 if pneumatic valve buried deep, operating mechanism and display plate distance from the ground 1 or more. 5 m, should be equipped with facilities of extension rod, and fixed firmly in mind, so that people from the face of the earth observation and operation. That is to say, the Industrial Valves opening and closing operation in pipe network, unfavorable under operation. Pneumatic valve gate valve performance test of 1 a specification batch manufacturing, should be authoritative institutions entrusted to make the following tests (1) the performance of the valve open-close torque under working pressure conditions; (2) under working pressure conditions, to make sure that the continuous opening and closing the valve closed tight times; (3) the flow resistance coefficient of valve in the pipeline condition detection. 2 valves should undertake the following inspection before they go out: (1) the valve under open conditions, the body should be 2 times the internal pressure of valve working pressure value detection; (2) the closing of the valve, both sides stand 1 respectively. Double valve pressure value, no leakage; But the metal sealing butterfly valve, leakage nor a value greater than the related requirement. Pneumatic valve internal and external anti-corrosion 1 body ( Including variable speed drive cabinet) Both inside and outside, should first deoxidization blasting derusting, and strive to electrostatic spraying powder non-toxic epoxy resin, the thickness of 0. More than 3 mm. Oversize electrostatic spraying valve non-toxic epoxy resin are in trouble, should also be similar non-toxic epoxy paint brush, spraying. 6. 2 inside the valve body and valve plate comprehensive anticorrosive parts requirements, on the one hand, soaking in the water will not rust, do not produce electrochemical corrosion between two metals; Two aspects of smooth surface reduce water resistance. 6. 3 body anticorrosive epoxy resin or paint the sanitary requirements, should have the corresponding authorities inspection report. The physical properties of chemical also should comply with the relevant requirements.
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