Purpose and classification for the explosion-proof solenoid pneumatic valve is introduced

explosion-proof solenoid pneumatic valve shell of gas explosion energy transfer have obvious retarding effect, besides the explosion-proof electromagnetic coils of pneumatic valve shell have the function of the gas explosion under pressure, so the safety of explosion-proof solenoid pneumatic valve performance is very high. Explosion-proof solenoid pneumatic valve is mainly suitable for transmission or flammable and explosive medium is dedicated to the dangerous sites with explosive of, but because of the different environment and different level of explosion-proof, explosion-proof solenoid pneumatic valve is divided into different kinds.
. This safety type: the equipment under the conditions stipulated in the internal circuit, normal or fault conditions stipulated in the work of edm and thermal effect are not ignite an explosive mixture.
. Flameproof: equipment in normal operation, can produce sparks arc parts in explosion-proof enclosure, the explosion of the flame-proof shell can withstand the internal pressure without damage, and can guarantee the internal flame gas travels through the gap, energy reduction, not detonate gas outside the shell.
. Positive pressure type: maintain internal protective gas pressure is higher than the surrounding pressure to avoid explosive mixture into a shell or adequate protective gas through the shell, make internal explosive mixture concentration was lowered to below the lower explosive limit.
. Increased safety type: in normal operation does not produce high temperature arc, spark and danger, further protection measures on structure, improve the security and reliability of the equipment.
. Encapsulation type: it will probably have to ignite an explosive mixture of arc, spark or high temperature part of the encapsulation, that it cannot ignite surrounding explosive mixture. The several types of explosion-proof solenoid pneumatic valve can in different environments make environmental safety factor is greatly increased.