Spiral-flow type motor vehicle venting spark quencher

The invention relates to a spiral-flow type motor vehicle venting spark quencher which discloses an engine venting processing device used for quenching sparks, and provides a spiral-flow type spark quencher combining spiral-flow centrifugal separation trapping and filter screen obstruction separation trapping. A flow guidance cover and a valve plug are assembled to form a flow guidance chamber, aspiral-flow chamber and a spiral-flow exhaust chamber; an anaerobic spiral-flow chamber and an anaerobic turbulence cavity are formed when exhausted gas passes through; and spark particles are subjected to multistage compound separation trapping quenching combining the spiral-flow centrifugal separation trapping and the filter screen obstruction separation trapping. The spiral-flow type motor vehicle venting spark quencher is suitable for guaranteeing the driving safety of a motor vehicle in the flammable and combustible environment, and fire hazards and explosions can be avoided.