Explosion-proof solenoid valve The role of
An explosion-proof solenoid valve encloses all parts of the equipment that may ignite explosive gas mixtures in a shell. The shell can withstand the internal explosion of the flammable mixture that penetrates into the shell through any joint surface or structural gap of the shell. It will not be damaged and will not cause the ignition of an external explosive environment formed by one or more gases or vapors. All parts that may produce sparks, arcs and dangerous temperatures are placed in the explosion-proof enclosure. The explosion-proof enclosure keeps the inside of the equipment The space is separated from its surroundings. Explosion-proof solenoid valve Its coil shell is not only explosion-proof to withstand gas explosion pressure It also has a blocking effect on the energy transfer of gas explosions and has higher safety performance.
Working principle of explosion-proof solenoid valve< /span>
< strong>Zero-pressure difference step-by-step direct-acting explosion-proof solenoid valve working principle:
Normally closed: When the coil is energized, the electromagnetic force first opens the pilot hole, and the pressure in the upper chamber of the main valve piston drops, thereby utilizing the pressure difference and the electromagnetic The force sucks the pilot valve core to link the main piston, and the valve port opens;when the power is cut off, the pilot hole is closed by spring reset, the upper chamber of the main piston is pressurized, pushing the main piston downward, and the valve is closed. Normally open is the opposite of normally closed.
Working principle of pilot-operated explosion-proof solenoid valve:
Normally closed type: When the coil is energized, the pilot valve core is closed, the pilot hole is opened, the upper chamber of the valve is relieved, the piston is pushed by the medium pressure in the lower chamber, and the electromagnetic The valve opens;when the coil is powered off, the pilot spool is reset by the spring, the pilot hole is closed, the upper chamber of the valve is pressurized by the piston orifice and the thrust of the return spring, and the solenoid valve is closed.
Normally open type: When the coil is energized, the pilot hole is closed, and the upper cavity of the valve Pressurized by the piston orifice and the thrust of the return spring, Solenoid valve is closed. When the coil is powered off, the pilot valve core returns by the spring, the pilot hole opens, the upper chamber of the valve relieves pressure, the piston is pushed by the medium pressure in the lower chamber, and the solenoid valve opens.
Working principle of direct-acting explosion-proof solenoid valve:
Normally closed type. When energized, the electromagnetic coil generates sufficient electromagnetic force to move the moving parts (composed of the magnetic core, valve stem, and upper and lower diaphragms/seals). ) is lifted from the valve seat and the valve opens;when the power is turned off, the spring force presses the moving parts against the valve seat and the valve closes.
Normally open type, the action direction is opposite to that of the normally closed type.
The above isThe role of explosion-proof solenoid valve, the working principle of explosion-proof solenoid valveContent introduction, want to know more For more related information, please log in to Sunway Pneumatic www.diancifa.cc.
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