An anti-backflow automobile exhaust pipe device

Abstract

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 piece is arranged on the inner wall of the pipe body. A movable waterproof blocking piece mechanism capable of moving towards the waterproof blocking piece so as to close the pipe body when water enters the pipe body is arranged between the waterproof blocking piece and the air outlet end of the pipe body. The backflow-preventing automobile exhaust pipe device is simple in structure, convenient to install and capable of effectively preventing backflow of an automobile.

Description

technical field [0001] The invention relates to an anti-backflow automobile exhaust pipe device. Background technique [0002] The automobile exhaust pipe is to eliminate the exhaust gas after the combustion of the engine. In use, since the usual automobile exhaust pipe is installed at the bottom of the car, the exhaust pipe at a lower position should Pipes can easily cause water to flow back into the exhaust pipe, which can easily cause engine damage. Also do not have effective device to solve the problem of anti-backflow of automobile at present. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide an anti-backflow automobile exhaust pipe device which is simple in structure, easy to install, and can effectively prevent backflow of automobiles. [0004] In order to achieve the above object, the present invention adopts the following scheme: [0005] An anti-backflow automobile exhaust pipe ...

AI Technical Summary

Problems solved by technology

[0002] The automobile exhaust pipe is to eliminate the exhaust gas after the combustion of the engine. In use, since the usual automobile exhaust pipe is installed at the bottom of the car, the exhaust pipe at a lower position should The pipe is very easy to cause water to flow back into the exhaust pipe, which is easy to cause engine damage

At present, there is no effective device to solve the problem of automobile anti-backflow

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