Socket joint lock catch type exhaust passage

The utility model discloses a socket joint lock catch type exhaust passage, its characterized in that, including junction between exhaust passage standard section and exhaust passage layer, exhaust passage standard section includes exhaust passage standard section main part, goes up the tongue -and -groove, interface lock and tongue -and -groove down, between the exhaust passage layer junction include connect the main part between the exhaust passage layer, go up the tongue -and -groove, tongue -and -groove and metal wing ring down, the junction passes through the interface and locks fixed connection between exhaust passage standard section and exhaust passage layer, connect between the exhaust passage layer and support with floor connect force through the metal wing ring. Beneficial effect: ensure that the load transmits on this floor board between exhaust passage finished product layer, an exhaust passage finished product layer load of having stopped to cause because of the nondeterminacy who operates can n