Swirling-flow noise-reduction joint used in construction drainage

Abstract

The invention relates to a swirling-flow noise-reduction joint used in construction drainage, which comprises a joint main body. The main body is provided with main raiser joints respectively at the upper and the lower parts and a cross branch joint at the sides. The invention is characterized in that the joint main body comprises a cross branch connector, an upper main raiser connector and a lower raiser connector; the lower main raiser connector is in funnel type and looks like a round platform; a lower guide sleeve is arranged in the funnel-type lower main raiser connector, and the inner wall of the lower guide sleeve is provided with a spiral hooping B. The outer diameter of the cross branch connector is larger than that of the upper and the lower main raiser joints; and the cross branch joint is connected with the cross branch connector through a spiral waterway. The proposal continues the overall main raiser spiral flow; and the branch flow and the main raiser spiral flow converge through the spiral waterway and whirl and flow down along the inner walls of pipes, thereby avoiding the crash between the branch flow and the raiser flow, guaranteeing the swirling falling of the raiser flow to reduce noise; in addition, the branch flow and raiser flow also can be connected in a UPVC draining pipe with smooth inner walls to reduce noise.

Description

technical field [0001] The invention relates to a building drainage pipe joint, in particular to a swirl flow noise-reducing joint for building drainage, which is used for improving the working condition of the building drainage system, improving the water flow capacity of the drainage riser and reducing water flow noise. Background technique [0002] Since the inner wall of the UPVC drainage pipe is relatively smooth, the water flow is not easy to form a water film to flow along the pipe wall, and it hits the pipe wall in a chaotic state in the pipe; moreover, the wall of the UPVC drainage pipe is thinner than that of the cast iron pipe of the same specification, such as the former of DN110. 4.0mm, while the latter is 5.5mm. In this way, the UPVC pipe cannot effectively prevent the transmission of noise and bring "uneasy" factors to the lives of users. Therefore, the UPVC spiral silencer pipe has been developed and produced, and its inner wall has spirally protruding ribs ...

AI Technical Summary

Problems solved by technology

But its disadvantage is that the connection between the standpipe and the horizontal branch pipe is easy to cause water tongue flow at the connection point, so that the spiral water flow of the main riser pipe is cut off, the water flow in the horizontal branch pipe is not smooth, and the pressure fluctuation of the drainage system is large, which greatly reduces the flow of the spiral silencer pipe. Water capability and noise reduction effect

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