01
The piston of blunt, return movement principle
Gas channel through the control valve, air chamber into the handle body, after the ratchet pore channel, entered the ark of valve chamber, when the ark of valve and valve closed, the guide hole of gas through the valve sleeve into the cylinder cavity, after push the piston forward the impact. When the piston end face before over the vent, gas cylinder former cavity formed by piston compression air cushion, instant pressure subsequently heighten, former cavity compressed gas anti-popular character Cheng Kong after go back to the high-pressure air chamber, the piston to move forward at this moment, with air pressure is higher, forcing the valve plate forward trend, when after the end of piston over the vent cylinder gas cavity after discharge from the vent, the cavity pressure fell sharply, so the pressure chamber after push valve reach, instant valve and valve closing, cut off the cylinder cavity gas path, after moment, stroke piston impact drill rod end, began to return.