A building drainage plastic riser with a spiral groove

A technology of building drainage and spiral grooves, applied in the direction of pipes, rigid pipes, pipe components, etc., can solve the problems of floor drain odor return, noise increase, pressure fluctuation, etc., to prevent return odor, reduce pipeline vibration and drainage noise, avoid The effect of alternating shocks

CN104565565BActive Publication Date: 2016-06-15上海深海宏添建材有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2016-06-15

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Abstract

The invention discloses a building drainage plastic stack with spiral grooves. The plastic stack comprises a plastic stack body, wherein the inner wall of the plastic stack body is coaxially and circumferentially provided with a plurality of spiral grooves along the axis of the stack; the junctions of the groove bottoms of the spiral grooves and the groove walls and the junctions of notches of the spiral grooves and the inner wall of the plastic stack body are all of circular arc transition structures. The junctions of the groove bottoms of the spiral grooves and the groove walls and the junctions of the notches of the spiral grooves and the inner wall of the plastic stack body are all of the circular arc transition structures, so the spiral grooves are of the streamline-shaped arc structures with small curvature, namely large curvature radius; the situation that the water flow moves towards the center of the stack to produce water blockage is avoided according to the theory of a fluid wall attachment effect, the fluctuation of pressure in the stack is reduced, the drainage flow rate within a certain pressure fluctuation range is improved, alternate impact of the water flow to the stack is also avoided, and the pipeline vibration and the drainage noise are greatly reduced.
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Description

technical field

[0001] The invention relates to the field of building drainage pipes, in particular to a building drainage plastic standpipe with spiral grooves, which has the advantages of preventing floor drains and deodorizing, reducing water flow noise, and strong drainage capacity. Background technique

[0002] Plastic pipe is a commonly used pipe for building drainage. However, because the inner wall of plastic pipe is smooth and the frictional resistance is small, when it is used for building drainage standpipe, the water flow velocity is relatively high. When the flow rate is slightly larger, it is easy to form water plug flow (water plug flow) : It means that when the building drainage riser is used for gravity drainage, when the flow rate is too large, the thickness of the water film attached to the pipe wall is too large, or the water flow is affected by the structure, the water flow forms a central water mass and falls in the pipe, forming a plug shape falling in ...

Examples

Embodiment Construction

[0026] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention will be further elaborated below.

[0027] see Figure 5 to Figure 8 The shown building drainage plastic riser with spiral grooves includes a plastic riser body 100, and a number of spiral grooves 120 are coaxially and circumferentially arranged on the inner wall 110 of the plastic riser body 100 along the axial direction of the riser.

[0028] In this embodiment, there are twelve spiral grooves 120, which are equally divided along the circumferential direction of the pipe section. The junction 121a between the groove bottom 121 of the spiral groove 120 and the groove wall and the junction 122 between the notch of the spiral groove 120 and the inner wall 110 of the plastic riser body are arc transition structures. In this embodiment, the groove bottom 121 of the spiral groove 120 is a concave arc surface, so that th...