Muffling pipes and road sweepers

Abstract

The invention discloses a noise elimination pipeline and a sweeping vehicle. The noise elimination pipeline comprises a plurality of pipe layers. The pipe layers include a supporting layer, a noise elimination layer and a noise isolation layer. The supporting layer is arranged on the innermost side of the multiple pipe layers. The noise elimination layer is supported on the periphery of the supporting layer, and the noise isolation layer is arranged on the periphery of the noise elimination layer. According to the noise elimination pipeline, due to the supporting layer, the strength of the noise elimination pipeline can be guaranteed, and the relatively high static pressure resisting capability is achieved; due to the noise elimination layer, the noise elimination pipeline can effectively lower the noise of a fluid flow path applying the noise elimination pipeline; and due to the noise isolation layer, the noise leakage of the fluid flow path at the position of the noise elimination pipeline can be avoided, and the noise elimination layer can be prevented from being polluted by the outside environment. The noise elimination pipeline serves as a connecting pipeline of the sweeping vehicle and can effectively prevent the draught fan noise from leaking at the position of the connecting pipeline, and the noise level of a pneumatic conveying system and the whole sweeping vehicle is effectively reduced.

Description

technical field [0001] The invention relates to the field of sanitation machinery, in particular to a sound-absorbing pipeline and a road sweeper. Background technique [0002] In the field of sanitation machinery, road sweepers widely serve cities and highways around the world due to their high cleaning efficiency and diversified functions. However, the noise problem during the operation of the road sweeper is also increasingly concerned by people. [0003] Fan noise is one of the main noise sources when the road sweeper is working, and it is generated by the interaction of aerodynamic noise and mechanical noise. The noise at the outlet of the fan enters the air duct, connecting pipes, suction cups, etc. in turn, and it is very easy to leak from the above-mentioned parts or connections. If the fan noise is not dealt with, it will cause noise pollution to the surrounding environment. [0004] In order to reduce the noise of the fan and avoid the problem of noise leakage, i...

AI Technical Summary

Problems solved by technology

[0006] In the process of realizing the present invention, the inventor found that the above prior art has the following disadvantages: although the two connecting pipes have a certain sound insulation effect, it is difficult to effectively prevent the fan noise from leaking at the connecting pipe, and cannot effectively Reduce the noise level of the pneumatic conveying system and the whole vehicle, especially the flexible plastic bellows are easy to be damaged and have poor sound insulation performance when the road sweeper is working

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