JPS63195491A - Single pipe type drain pipe joint - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to an improvement of a drain pipe joint in a single pipe drainage system that omits a ventilation pipe in mid-to-high-rise buildings.

(Prior art) Conventionally, drain pipe joints for medium-to-high-rise buildings are As shown in Figure J6, this is a joint that simply allows the wastewater to flow directly into the standpipe 2 from the side branch pipe 1, so the flow rate of the wastewater falling into the standpipe 2 is fast.
In addition, as the waste water from the side branch pipe 1 joins the standpipe 2, the air passage inside the standpipe 2 is closed, so a large air pressure is generated inside the standpipe 2, which may break the water seal of the trap. be. For this reason, it is necessary to reduce the generation of air pressure by connecting the ventilation pipe 3 to the standpipe 2 as shown by the dotted line in FIG. 6 and opening it to the atmosphere through the vent cap 4 at the upper end. Moreover, the presence of ventilation pipes increases the piping space and increases piping construction costs.

In addition, as a single-pipe type drain pipe joint that omits such a ventilation pipe 3, a large-diameter drainage pipe joint 5 with a horizontal branch pipe 1 connected to the middle of the standpipe 2 is provided as shown in Figure 'M7. As shown in FIG.
There is also a joint that reduces the flow velocity by swirling the falling waste water and forms an air core in the center of the standpipe 2 to ensure an air passage and suppress air pressure fluctuations. (Unexamined Japanese Patent Publication 1981
(See No. 31539) (Problems to be Solved by the Invention) By the way, the above-mentioned single pipe type drain pipe joint shown in Fig. 8: 1) cannot reliably reduce the flow velocity of waste water falling through the standpipe 2; Therefore, there is a limit to the drainage capacity.

2) Dirt, grease, etc. in the wastewater adhere to the vane plate 6 for swirling the wastewater, causing clogging accidents and deteriorating the swirling function of the wastewater, resulting in a decrease in the drainage capacity and traps. The water seal is broken.

3) Since it has a complicated shape with the slats 6, it can only be manufactured by casting.

There are other problems.

(Object of the Invention) The present invention has been made to solve the above-mentioned problems, and is capable of reliably reducing the falling flow velocity of wastewater in the standpipe, and moreover, reduces the flow rate of wastewater flowing through the standpipe and flowing out from the side branch pipe. It allows drainage to flow without directly colliding with the water, and it also eliminates slats, suppresses the generation of air pressure in the standpipe, eliminates ventilation pipes, and eliminates the adhesion of dirt and grease. The object of the present invention is to provide a single-pipe drain pipe joint that can be manufactured by combining pipe joints.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the single pipe type drain pipe joint of the present invention has one or more side branch pipes joined together to form a diagonally upward direction at a required angle. The main pipe is branched and raised in the vertical direction, and then dammed back so that it is located on the vertical axis line at a higher position than the standpipe dedicated to the side branch pipe and connected to the standpipe on the upper floor. It is characterized by:

(Function) As described above, in the single-pipe type drain pipe joint of the present invention, since the standpipe dedicated to the side branch pipe where the side branch pipes join and the main standpipe are misaligned, the drainage flowing through the standpipe falls. The flow velocity is reliably reduced by the off-centered inclined pipe section. Therefore, the air pressure in the vertical main pipe, especially the negative pressure, can be reduced. Furthermore, since the main stand pipe and the stand pipe exclusively for side branch pipes are separated, the flow of waste water and air flowing through the stand pipe will not be blocked by the water flowing horizontally from the side branch pipe. Therefore, an increase in air pressure in the combing section can be suppressed.

(Example) An example of the single pipe type drain pipe joint of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram of a single-pipe type drainage pipe joint 11 of the present invention attached to each floor of a drainage standpipe 10 of a medium-to-high-rise building.
In the figure, 12 is an extension ventilation pipe, 13 is a vent cap, and 14 is a horizontal vertical pipe.

15 is a drainage basin, and 16 is a horizontal branch pipe on each floor.

The basic structure of the single pipe type drain pipe joint 11 is as shown in FIG.
A standpipe 18 for exclusive use of a horizontal branch pipe whose lower end is connected to the drainage standpipe 10 on the lower floor, and an inlet 17 for connecting the vertical branch pipe 17 at right angles to the upper and lower two stages, Pipe standpipe 18
The vertical axis I is branched diagonally upward at a predetermined angle with respect to the vertical axis β of
Twist it back so that it is located at
The vertical main pipe 19 is connected to the main pipe 19.

When the single-pipe type drainage pipe joint 11 configured in this way is attached to the drainage standpipe 10 of a medium-to-high-rise building on each floor as shown in FIG. As shown in FIG. 2, the oblique pipe portions 19a and 19b at the top and bottom of the vertical main pipe 19 are offset from each other, thereby reliably slowing down the falling flow velocity and suppressing the generation of negative pressure within the vertical main pipe 19. It will be done. In addition, the wastewater flowing from the two side branch pipes 16 on each floor enters the standpipe 18 dedicated to the side branch pipe from the inlet 17 and merges with the flow of wastewater in the main stand pipe 19 at the bottom. Since the drainage water and air extinguisher flowing through the vertical main pipe 19 are not directly dammed from the horizontal direction, the merging resistance is reduced, the increase in air pressure at the merging part is suppressed, and there is no need for a vent pipe to release pressure. Become.

Other embodiments of the single pipe type drain pipe joint 11 of the present invention are shown in FIGS. 3 to 5, respectively.

The single-pipe drainage pipe joint 11 in Fig. 3 is a standpipe 18 exclusively for side branch pipes.
The top of the main pipe 19 is connected to the top of the vertical main pipe 19 by a ventilation pipe 20, and the rest of the structure is the same as that of the previous embodiment. This single pipe type drain pipe joint 11 has the same function as the embodiment described above, and also introduces air from the vertical main pipe 19 side into the dedicated horizontal branch pipe stand 18 when draining from the horizontal branch pipe 16. It has the function of reducing the siphon effect of the lateral branch pipe 16.

The single pipe type drain pipe joint 11 shown in FIG. It is composed of T
The shaped pipe 21 is a standard part, and the L-shaped pipe 22 is obtained by cutting the vertical pipe portions 22a according to the pitch P of the upper and lower horizontal branch pipes 16 and assembling them together. In the single pipe type drain pipe joint 11 having such a structure, if only the L-shaped pipe 22 is produced with a long standpipe portion 22a, the L-shaped pipe can be changed at the site according to the change in the pitch P of the side branch pipe 16. 22 standpipe portions 22a can be cut and assembled together. Moreover, even if the direction of the horizontal branch pipe 16 changes on a plane, the T-shaped pipe 21. Since the direction of the introduction port 17 of both the L-shaped pipe 22 can be freely changed, the connection of the side branch pipe 16 is easy.

The single pipe type drain pipe joint 11 shown in FIG. 5 is constructed by combining only existing straight pipes and pipe joints. That is,
The upper part of the standpipe 18 exclusively for the side branch pipe is formed by two T-shaped pipes 21 and the cap 23, and the lower part of the standpipe exclusively for the side branch pipe 18 and the main pipe 1 are formed.
9 is formed by a 456Y-shaped pipe 24, and the lower bent part of the main vertical pipe 19, the upper bent part, and the drainage standpipe 1 at the upper end are formed.
0 is formed by a 45° elbow 25° 25', and the vertical part in the middle of the vertical main pipe 19 is formed by a straight pipe 26, which are combined and connected. Therefore, it is easier to manufacture than conventional single-pipe drain joints, which can only be manufactured by casting.

(Effects of the Invention) As can be seen from the above explanation, according to the single-pipe type drain pipe joint of the present invention, it is possible to reliably reduce the falling flow velocity of the wastewater in the drainage standpipe, and moreover, The air is not blocked by drainage water flowing horizontally from the side branch pipes, making it possible to suppress the rise in air pressure at the confluence. Therefore, the ventilation pipe can be omitted, the piping space can be reduced, and the piping construction period and cost can be reduced.

In addition, since the single-pipe drain pipe joint of the present invention does not have vanes for turning complicated drainage, there is no fear that dirt, grease, etc. may adhere to the vanes and cause accidents such as clogging of the standpipe. Without,
Even if used for many years, the drainage capacity will not deteriorate.

Furthermore, the single pipe type drain pipe joint of the present invention has a simple structure, so unlike conventional drain pipe joints that can only be manufactured by casting, it can be used not only by casting but also by using existing straight pipes and 45'' elbows.
Manufacture is easy because it can be configured by combining and connecting pipe fittings such as a 51Y type pipe and a 90'T type pipe.

Furthermore, since the single-pipe drainage pipe joint of the present invention has a main pipe of the same thickness and a dedicated standpipe for side branch pipes, it is easy to attach soundproofing material to the trunk to reduce drainage noise. It's an island.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of the single pipe type drain pipe joint of the present invention installed in a drainage standpipe of a medium-to-high-rise building; Fig. 2 is a vertical sectional view showing the basic structure of the single pipe type drain pipe joint of the present invention; Figures 3 to 5 are longitudinal sectional views showing other embodiments of the single-pipe drainage pipe joint of the present invention, Figure 6 is a schematic diagram of a conventional drainage system for medium-to-high-rise buildings, and Figure 7 is a diagram of a conventional drainage system. Schematic diagram of a single pipe drainage system, ′
Figure s8 is a longitudinal sectional view of the single-pipe drainage pipe joint in the single-pipe drainage system of Figure 7. 10...Drain standpipe 11...Single pipe type drain pipe joint 1
6... Side branch pipe 18... Stand pipe exclusively for side branch pipe 19...
・Standing main pipe Figure 4 Figure 5 Figure 2 Figure 3

Claims (1)

[Claims] In a single-pipe drainage system that eliminates the ventilation pipe, the drainage pipe joint is a standpipe exclusively for the side branch pipe that joins one or more side branch pipes and connects to the standpipe on the lower floor, and a standpipe exclusively for this side branch pipe. The vertical axis of the standpipe is branched diagonally upward from the bottom of the standpipe at a required angle to the vertical axis of the standpipe exclusively for side branch pipes, and then raised in the vertical direction. A single-pipe type drain pipe joint characterized in that it is comprised of a vertical main pipe that is twisted back at a required angle so as to be in the correct position and connected to a branch pipe on an upper floor.