Horizontal offset rotary constant-pressure bending head for drainage stand pipe

Abstract

The horizontal offset rotary constant-pressure bend comprises a horizontal water inlet end, a vertical water outlet end and a top ventilation end, and the rear end of the horizontal water inlet end is provided with a tangential transition section enabling the direction of water flow to deflect; a tangential water inlet section tangent to the tangential transition section is arranged at the rear end of the tangential transition section, and the bending radian of the tangential water inlet section is not consistent with that of the tangential transition section; a tangential outer circle section is arranged on the outer side of the tangential water inlet section; the tangential outer circle section and the top ventilation end are communicated with the vertical expansion section; the lower end of the vertical expansion section is arranged to be a conical transition section, and the lower end of the conical transition section is arranged to be a vertical water outlet end. The problem that a'nappe 'is formed in the large-radius 90-degree elbow to block a ventilation channel of the drainage stand pipe when the drainage system drains water from the offset transverse pipe to the drainage stand pipe is solved, meanwhile, pressure stabilization of the drainage system is achieved, and it is guaranteed that the drainage system does not have the problem of odor return of the drainage system.

Description

technical field [0001] The invention relates to the field of drainage pipe fittings, in particular to a horizontal offset rotary pressure equalizing elbow for a drainage riser. Background technique [0002] In the building domestic drainage pipeline system, when the drainage system is horizontally offset due to the confluence of the building structure or the drainage system, the large-radius 90-degree elbow is used to convert the connection between the drainage riser and the offset horizontal pipe. When the drainage system drains water from the offset horizontal pipe to the drainage riser, due to the fast water flow of the offset horizontal pipe, it will rush to the outer pipe wall of the elbow to form a "water tongue". The water flow carries a large amount of gas into the elbow, and the "water tongue" will The ventilation channel of the drainage riser is blocked, so that the upper air flow of the offset horizontal pipe is blocked and cannot be discharged, the upper system f...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem in the prior art that a "water tongue" is formed in a large-radius 90-degree elbow to block the ventilation channel of the drainage riser when the drainage system drains from the offset horizontal pipe to the drainage riser, the present invention proposes a drainage system for drainage Riser Horizontal Offset Rotary Balance Elbow

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