Backflow-preventing automobile exhaust pipe device

The invention discloses a backflow-preventing automobile exhaust pipe device. The backflow-preventing automobile exhaust pipe device comprises an exhaust pipe body. A three-way catalyst is arranged at the air inlet end of the exhaust pipe body. A bending part is arranged in the middle of the exhaust...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	XIE YONGLIN, LUO DEYANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADHESIVES BLASTING CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS CORRECTING FLUIDS DYES ENGINE PLANTS IN GENERAL FILLING PASTES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL HEATING INKS LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES STEAM ENGINES USE OF MATERIALS THEREFOR WEAPONS WOODSTAINS
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Beschreibung
Zusammenfassung:	The invention discloses a backflow-preventing automobile exhaust pipe device. The backflow-preventing automobile exhaust pipe device comprises an exhaust pipe body. A three-way catalyst is arranged at the air inlet end of the exhaust pipe body. A bending part is arranged in the middle of the exhaust pipe body. The three catalyst is arranged between the bending part and the air outlet end of the exhaust pipe body. A backflow-preventing device is arranged at the air outlet end of the exhaust pipe body. The backflow-preventing device comprises a connecting part arranged at one end of the exhaust pipe body. An inserting groove is formed in the connecting part. A sealing ring is arranged in the inserting groove. The sealing ring comprises a bottom ring arranged at the bottom of the inserting groove. A wall ring capable of being attached to the inner wall of the inserting groove is arranged on the bottom ring. A pressing mechanism is arranged on the outer side of the inserting groove. A downward waterproof blocking