Noise and smoke elimination devices for special vehicles

Abstract

The invention discloses a silencing and smoke eliminating device of a special vehicle, and belongs to the field of tail gas treatment of the special vehicles. An air inlet used for communicating witha smoke exhaust pipe of the special vehicle is arranged at the lower end of an outer box body of the silencing and smoke eliminating device, and an air outlet is arranged at the top of the outer box body of the silencing and smoke eliminating device; an inner box body is positioned inside the outer box body; the upper end of a water discharge pipe communicates with a water storage tank positionedabove the outer box body; the lower end of the water discharge pipe extends into the outer box body and is positioned above the inner box body; a support ring sleeves the inner box body and is in contact with the inner wall of the outer box body, so that the outer box body is divided into a first chamber and a second chamber; a plurality of first through holes are formed in the upper end of the support ring; the air inlet of the outer box body, the lower end of the water discharge pipe and a sedimentation outlet are positioned in the first chamber; the air outlet of the outer box body, a nitrogen oxide concentration detection head and a urea pump are located at the top of the second chamber; the nitrogen oxide concentration detection head is used for detecting oxide concentration information in the second chamber and transmitting the information to a controller; and the controller is used for controlling the urea pump to inject urea into the second chamber according to the nitrogen oxide concentration information.

Description

Technical field [0001] The invention relates to the field of vehicle exhaust treatment, in particular to a noise and smoke eliminator for special vehicles. Background technique [0002] During the operation of special vehicles, a large amount of exhaust gas will be generated and accompanied by noise, which will not only pollute the environment, but also cause noise pollution. Therefore, it is necessary to provide a noise reduction device for special vehicles. [0003] At present, the muffler and smoke eliminator for special vehicles include: muffler and smoke muffler connected in sequence; among them, the muffler includes: glass fiber layer and protective layer arranged from the inside to the outside, and the muffler is set in the smoke exhaust pipe of the special vehicle on. [0004] The inventor found that the prior art has at least the following problems: [0005] The muffler of the above-mentioned noise reduction and smoke suppression device for special vehicles cannot effectivel...

AI Technical Summary

Problems solved by technology

[0005] The mufflers of the noise and smoke elimination devices of the above-mentioned special vehicles cannot effectively reduce the noise of the exhaust gas

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