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When the working voltage of the electromagnetic pulse valve is 85% of the rated voltage under the condition of the nominal air pressure of the electromagnetic pulse valve, the opening response time of the electromagnetic pulse valve should be less than 0.03s. Under specified environmental conditions, the insulation resistance of the electromagnetic coil to the housing should be greater than 1MΩ. Electromagnetic pulse valve to withstand the frequency of 20Hz, the full-width of 2mm, which lasted 30min after the vibration should be able to work properly. Electromagnetic pulse valve appearance no obvious coating peeling, scratches, burrs and other injuries. The role of electromagnetic pulse valve: that is, the size of the hydraulic oil in the control. Generally installed in the main oil or shock absorber back pressure oil to reduce gear shift and lock the oil pressure when the unlock, so that equipment operation to maintain a steady state. Valve inlet and outlet point of view and the form of the inlet can be divided into three types: a) rectangular electromagnetic pulse valve: the valve body into a right angle, directly controlled by the electrical signal diaphragm valve; b) through the electromagnetic pulse valve : 180 degrees into the body of the import and export, the direct control of the diaphragm signal by the electrical signal; c) submerged electromagnetic pulse valve: the body inlet submerged in gas bag, the diaphragm valve directly controlled by electrical signals. The injection flow of the electromagnetic pulse valve enters the injection pipe at a high speed and reaches the maximum dynamic pressure at the entrance of the injection pipe with the minimum static pressure. The dynamic pressure of the fluid at the bottom of the injection pipe drops to zero and the static pressure reaches the maximum Value.Fluid mainly by static pressure from the nozzle into the dust bag.Adjusting the size of the nozzle orifice on the injection pipe, to achieve the different resistance, the fluid through the nozzles when the static pressure is equal.Thus also ensures that the filter bag The same cleaning effect, the same life expectancy.