A hollow spiral silencer drainage pipe

Abstract

The invention discloses a hollow spiral sound attenuation drainage pipe. The hollow spiral sound attenuation drainage pipe comprises an outer pipe and an inner pipe. The inner pipe is concentrically arranged in the outer pipe, and a plurality of connecting pipes are glued and fixed through the outer pipe and the inner pipe together. The connecting plates are symmetrically arranged in the clearancebetween the outer pipe and the inner pipe, and a spiral guide rib is arranged in the inner pipe. One end of the guide rib is fixed to the upper end of the inner pipe. The hollow spiral sound attenuation drainage pipe has the advantages that when water flow in the inner pipe is small, the guide rib is in a contraction state under the action of the elasticity of itself, the drift angle between theflowing direction of the flowing water in the inner pipe and the horizontal direction is small at this moment, and on the contrary, the drift angle between the flowing direction of the flowing water in the inner pipe and the horizontal direction is large. When the drift angle is small, it can be guaranteed that an air column in the inner pipe is large, and noise generated by water flow is smaller.When the drift angle is large, it is guaranteed that the air column still exists in the inner pipe even though the water flow is fast; and although the air column is small, the obvious effects of promoting flowing and reducing noise are still achieved.

Description

technical field [0001] The invention relates to the technical field of drainage pipes, in particular to a hollow spiral sound-absorbing drainage pipe. Background technique [0002] At present, in water supply and drainage, it is mainly realized through various types of plastic pipelines. Although it can meet the needs of water supply and drainage operations, a lot of noise is often generated when the water flows through the pipelines, which leads to the current water supply and drainage operations. It often produces a lot of noise pollution to the surrounding environment; a spiral pipe has appeared in the prior art, the main function is to make the water flow in the pipe spirally rotate to achieve the effect of noise reduction, but the pipe of the prior art can only be used when the water flow is certain. Noise reduction is achieved in the environment, and obvious noise will still be generated when the water flow is large, that is, the existing pipeline cannot be generally u...

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Problems solved by technology

[0002] At present, in water supply and drainage, it is mainly realized through various types of plastic pipelines. Although it can meet the needs of water supply and drainage operations, a lot of noise is often generated when the water flows through the pipelines, which leads to the current water supply and drainage operations. It often produces a lot of noise pollution to the surrounding environment; a spiral pipe has appeared in the prior art, the main function is to make the water flow in the pipe spirally rotate to achieve the effect of noise reduction, but the pipe of the prior art can only be used when the water flow is certain. Noise reduction is realized in the environment, and obvious noise will still be generated when the water flow is large, that is, the existing pipeline cannot be generally used for various flow rates, so that in many cases there is still relatively obvious noise

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