JPH0213621A - Vertical drain pipe - Google Patents

Abstract

PURPOSE:To prevent the blow-out of dirty water by forming a vertical drain pipe arranged in the vertical direction into spiral form over the whole and allowing drainage to flow down at a low speed through turning from the upper part to the lower part and reducing the pressure variation in the pipe. CONSTITUTION:A vertical drain pipe 2 which is arranged mainly vertic ally on an intermediate or high storied building is formed in spiral form all over the whole. The spiral vertical pipe which is led from upper story and a spiral vertical pipe 2 which leads to the lower story are connected through a joint 3, and connected with lateral branched pipes 1 and 1. Drainage is allowed to flow down at a low speed through turning from the upper part to the lower part, and also an air passages are connected in spiral form, and the generation of the intermediate water clogging state is prevented. Therefore, the pressure variation in a drain pipe can be reduced, and the breakage of drainage in a trap and the blow-out of dirty water can be surely prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a drainage standpipe used particularly in medium- and high-rise buildings.

(Prior art) In general, drain pipes that drain sewage from drainage equipment such as toilets, bathrooms, and kitchens installed inside a building to the outside of the building are connected to each drainage equipment and installed horizontally. It consists of a horizontal branch pipe installed in the pipe, and two vertically installed vertical pipes connected to the horizontal branch pipe via a joint.
′ However, especially near the lower floors of medium- and high-rise buildings,
As the flow rate of sewage drained from drainage equipment increases, and the flow speed increases accordingly, pressure fluctuations occur in the traps connected to drainage equipment, which are greater than the depth of the traps.
There were cases where the trap's water seal was broken and sewage spewed out from the drain.

In order to solve such problems, conventionally, as shown in Fig. 8, a twisted part 100 whose center axis is spirally eccentric is formed in a part of a standpipe or a joint to prevent drainage from drainage equipment. Some attempts have been made to swirl the sewage W at this twisting part 100 to reduce its flow rate and suppress pressure fluctuations inside the drain pipe (for example, French Patent No. 1
572140 and Utility Model Publication No. 58-48468)
.

(Problem to be solved by the invention) - However, as shown in FIG. Therefore, if a joint with a twisted part 100 is installed on each floor as in Japanese Utility Model Publication No. 58-48468, sewage W will have a circular flow and a partial flow while flowing from the top to the bottom of the building. This will be repeated. Then, in the transition part from the partial flow to the water ring flow (section 7) and the transition part from the water ring flow to the partial flow (section 2), a part of the inside of the drain pipe is completely blocked by the waste water W, and the faucet is turned off. A condition arises.

In this way, in the conventional drain pipe, the twisted portion 100
Since it is only partially provided, it is not possible to sufficiently slow down the flow rate of the waste water W, and in addition, the air flow path A is separated by the waste water W in the middle due to the occurrence of a faucet condition, so the reverse flow occurs. However, the pressure fluctuations inside the pipes increased, and there were still problems such as the water seals in the traps of drainage equipment being broken and sewage blowing out.

The present invention has focused on the above-mentioned problems and provides a drainage standpipe that can reliably reduce pressure fluctuations within the drain pipe and prevent the water seal in the trap from breaking.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides vertical drainage pipes for discharging sewage discharged from each drainage equipment installed inside the building to the outside of the building. The drainage standpipe arranged in the direction is formed so that the center axis is eccentrically spirally over almost the entire part.6 (Function) The drainage standpipe of the present invention has Since the central axis is formed so as to be eccentric in a spiral manner, the wastewater flows down at a low speed while spiraling from top to bottom.

In addition, since the flow of sewage continues from top to bottom in a partial flow that is biased towards one side of the drainage standpipe, the air flow path formed in the area other than where the sewage is flowing is also ensured to be continuous from top to bottom. can.

(Example) Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

First, the first embodiment will be applied to a medium-to-high-rise building, and its details will be explained with reference to FIGS. 1 to 5.

In Fig. 2, 1 is a side branch pipe, 2 is a standpipe, and 3 is a cross joint, where the side branch pipe l is arranged horizontally along the floor 4 of each floor, and the standpipe 2 is installed on the floor of each floor. 4, and the joint 3 is provided at a position where the horizontal branch pipe 1 and the standpipe 2 intersect.

The horizontal branch pipe l is formed in a straight line, and has a sink 5. The washstand 63 is connected to various drainage equipment such as the toilet bowl 7 via a trap (not shown).

The standpipe 2 is formed so that the center axis S is eccentric in a spiral manner over almost the entirety thereof, and the base end portion is connected to the horizontal main pipe 8.

In addition, it is preferable that the eccentric diameter of the standpipe 2 is set to be larger than the pipe diameter of the standpipe 2. Further, as the material for the standpipe 2, synthetic resin (especially olefin resin) is preferable from the viewpoint of workability and corrosion resistance.

Further, the standpipe 2 may be formed with the central axis eccentrically arranged in a spiral manner, at least in a portion other than the portion corresponding to the connection with the joint 3.

The joint 3 is provided with a horizontal branch pipe socket 31 opening to the left and right, and a stand pipe socket 32 opening upwardly and downwardly.

Next, the operation of the embodiment will be explained.

Sink 5. The wastewater W drained from each drainage equipment such as the wash basin 69 and the toilet bowl 7 first passes through the side branch pipe l to the side branch pipe inlet 3.
1 into the joint 3. And the standpipe socket 3 of the joint 3
2 into the standpipe 2, passes through the standpipe 2, and flows down to the horizontal main pipe 8.

Since the standpipe 2 is formed so that the central axis is eccentric in a spiral manner throughout the standpipe 2, the wastewater W flows down at a low speed in the standpipe 2 while spirally turning from top to bottom. 3
(see figure).

In addition, the flow of the spirally rotating wastewater W becomes a partial flow in which the wastewater W is biased toward one side of the standpipe 2 due to the centrifugal force (see Fig. 9), so in the standpipe 2 of this embodiment, This partial flow continues throughout from the top to the bottom without forming a water ring. That is, since a faucet condition does not occur in the middle, the air flow path A for air formed in a portion other than where the dirty water W is flowing can also be secured in a continuous spiral shape from top to bottom.

In addition, the sewage W flowing through the side branch pipe 1 and the sewage W flowing down the standpipe 2 meet in the joint 3, but the joint 3 has a short vertical length of approximately 30 cm, and the sewage flowing down the standpipe 2 W
Since the flows are maintained in a divided state, the sewage W flowing through the side branch pipe 1 joins smoothly without interfering with the flow of sewage W flowing down the standpipe 3 (see Figure 4). .

Also, when flowing from the standpipe 2 into the horizontal main pipe 8, the flow remains a partial flow, and the air flow path A in the standpipe 2 and the air flow path A in the horizontal main pipe 8 are continuous ( (See Figure 5).

In this way, the lateral branch pipe 1. Standpipe 2. #! Hand 3. Since the air flow path A is continuous in the drain pipe formed by the horizontal main pipe 8, the air inside the drain pipe passes through this air flow path A to the standpipe 2.
It escapes into the air from the open end at the top.

Therefore, in this embodiment, it is possible to reliably reduce the pressure fluctuation within the drain pipe, thereby reliably preventing the water seal of the trap from breaking and the sewage from blowing out.

Next, a second example and a third example will be described.

In describing the second and third embodiments, the same components as those in the first embodiment are denoted by the same reference numerals in the drawings, and the explanation thereof will be omitted. Further, regarding the operations, explanations of operations similar to those of the first embodiment will be omitted.

The second embodiment is an example in which the standpipe 2 is wrapped around the outer periphery of another water supply pipe 9, as shown in FIG. In addition, water supply pipe 9
A rod member may be used instead. In this way, by wrapping the standpipe 2 around the water supply pipe 9 or the rod member, the overall strength can be improved.

In the third embodiment, as shown in FIG. 7, a standpipe 2 is used as an inner pipe, and an outer pipe IO made of a steel pipe, a zero-asbestos pipe, etc. is placed outside the standpipe 2.
This is an example of a two-layer structure. In this way, the outer tube 10
By providing this, it is possible to improve soundproofing and fire resistance. Note that the outer pipe IO may be provided only at the fireproof compartment penetration portion (near each open slab), or may be provided over the entire length of the standpipe 2. Furthermore, if the standpipe 2 serving as the inner pipe is made of flexible resin, it can be easily inserted into the outer pipe 10 at I/X0. The invention is not limited to the embodiments, and any design changes or the like that do not depart from the gist of the invention are included in the invention.

For example, in the embodiment, the joint is formed so that its vertical center axis is linear, but it may be formed eccentrically in a spiral shape, similar to the standpipe.

(Effects of the Invention) As explained above, in the drainage standpipe of the present invention, wastewater can flow down at a low speed while swirling throughout the entire area from top to bottom. Since a continuous air flow path can be ensured from the top to the bottom, pressure fluctuations inside the drain pipe can be reliably reduced. As a result, it is possible to reliably prevent the water seal from breaking in the trap and the sewage from blowing out.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view of a building showing the piping state of the drainage standpipe according to the embodiment of the present invention, Fig. 2 is a side view showing the connection state of the drainage standpipe and the horizontal branch pipe of the embodiment, and Fig. 3 Figures 5 to 5 are side views showing the flow of sewage in the drainage standpipe of the embodiment, Figure 6 is a side view showing the drainage standpipe of the second embodiment, and Figure 7 is the side view of the drainage standpipe of the third embodiment. A side view showing a drainage standpipe, Fig. 8 is a side view showing the flow state of sewage in a conventional drainage standpipe, Fig. 9(a) is a
-a sectional view, Fig. 9(b) is a bb-b sectional view, Fig. 9(c)
) is a CC sectional view. t'-...Horizontal pipe 2...Stand pipe 3...Joint 5...Sink (drainage equipment) 6...Wash stand (drainage equipment) 7...Toilet (drainage equipment) 8...Horizontal main pipe S...Central axis A...-Air flow path W--Sewage patent application Sekisui Chemical Co., Ltd. Representative Hiroshi 1) Kaoru Figure 9 Figure 8. . .

Claims (1)

[Claims] 1) Among the drainage pipes that drain wastewater from each drainage equipment installed inside the building to the outside of the building, the vertical drainage standpipe is the center of the drainage pipe that is installed in the vertical direction. A drainage standpipe characterized by having a shaft that is eccentrically formed in a spiral shape.