JPS5942093A - Drain and ventillation system - Google Patents

Abstract

PURPOSE:To decelerate the velocity of the waste water flowing down in the drain riser main pipe used in super multistoried multiple dwelling houses, by providing plural vent joints in the midway of said main, and feeding the pressurized air in the lower part of the drain riser main through vent pipes to the vent joints. CONSTITUTION:A drain riser main pipe 6 in a drainage system of super multistoried multiple dwelling houses has a large difference in height and the breakage of the water sealing in a drain trap and noise are generated by a large amt. of high velocity flowing water owing to the head and displacement of the waste water flowing down in the main. Plural pieces of vent joints A of a circular section each having a spherical bulging part 2 in the middle are mounted in the parts of the main 6 corresponding to lower floors or middle floors and the vent pipes 4 branched from the lower drain pipes 7 in the main 6 are connected to said joints in order to prevent said breakage and noise. The pressurized air in ?the main 7 is fed into the part 2 of the joint A through the pipe 4 by which the air pressure in the pipe is of the breakage in the water sealing of controlled and the drain velocity in the pipe is decelerated. The generation of the drain trap and the noise of passing water is thus prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drainage ventilation system used in high-rise housing complexes and the like.

When the drainage system of an apartment building or the like is very high-rise, the falling height of water and the amount of water discharged are large, so the air pressure in the drainage standpipe fluctuates greatly, and the flow velocity in the pipe increases.

As a result, the water seal in the drain trap is destroyed, causing a foul odor in the room and the noise of water flowing.

The present invention is a drainage ventilation system developed to address the above-mentioned problems, which is capable of reducing the flow velocity within the pipe and adjusting the air pressure within the pipe.The details thereof will be explained below with reference to the illustrated embodiment.

First, in the ventilation joint used in this invention, a substantially spherical enlarged part 2 is formed in the middle of a tube body 1 having a circular cross section, an opening 3 is formed on the side surface of this enlarged part 2, and this opening 3
A ventilation pipe 4 is connected to the vent pipe 4. Further, at the upper part of the opening 3, an arc-shaped water dam 5 is provided to protrude from the upper inner wall of the enlarged part 2. A multi-story building is equipped with a drainage room main pipe 6 that connects the upper and lower floors. Therefore, in the lower floor or a required intermediate floor, the ventilation joint A is interposed in the middle of the drainage vertical main pipe B, and the ventilation pipe 4 branched from the ventilation joint A and the lower drainage main pipe 7 is installed.
The pressurized air in the lower main drainage pipe 7 is sent into the ampulla 2 through the ventilation pipe 4, and the air pressure in the pipe is increased to ii'
Verse 74. Further, since the wastewater flows down along the inner wall of the pipe, the flow velocity decreases in the enlarged portion 2.

This invention has the above-mentioned structure, and can send pressurized air in the lower drain pipe through the branched ventilation pipe to the main pipe of the drainage vehicle at a desired position, thereby adjusting the air pressure in the pipe and reducing fluctuations. In addition, since the flow velocity in the pipe is reduced, it is possible to prevent the water seal of the drain trap from breaking and the generation of water flow noise.

[Brief explanation of the drawing]

FIGS. 1 and 2 are schematic diagrams of a drainage ventilation system of the present invention using the above-mentioned joint, and FIGS. 3, 4, and 5 are a front view and a longitudinal cross-sectional view of the ventilation joint. A. Ventilation joint 1. Pipe body 2. Vast part 3. Opening 4. Ventilation pipe 5. Water dam 6. Main pipe 7. Lower drainage main pipe No. 31 I1 B, 2 Oto 1 type 5 To1

Claims (1)

[Claims] In a multi-story building, install a drainage room main pipe that connects the upper and lower floors, provide a ventilation joint on the lower floor or intermediate floor, and connect a ventilation pipe branched from the lower drainage main pipe to the ventilation joint, and connect the lower drainage vertical pipe. A drainage ventilation system characterized in that air pressurized by air is sent through a ventilation pipe to a ventilation joint to adjust the air pressure inside the pipe.