Spiral-flow type air filter exhaust pipe

The utility model provides a spiral-flow type air filter exhaust pipe. The spiral-flow type air filter exhaust pipe comprises a pipe body, a press-fit fastener and a protection mechanism, a threaded connector is fixedly installed at one end of the pipe body, two L-shaped limiting grooves distributed in a staggered mode are formed in the other end of the pipe body, and the press-fit fastener used for improving the installation firmness of the pipe body is installed on the pipe body. The protection mechanism used for protecting the pipe body is installed on the pipe body, the press-fit fastenercomprises a fixing disc, a press-fit sleeve, a hollow groove and a spring, the fixing disc is fixedly connected to the side, close to the L-shaped limiting groove, of the pipe body in a sleeving mode,and the side, close to the L-shaped limiting groove, of the fixing disc is sleeved with the press-fit sleeve in a sliding connection mode. A hollow groove is formed in the side, close to the fixing disc, of the pressing sleev