JP3459974B2 - Drainage method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage method, and more specifically, to drainage drainage for draining drainage from drainage equipment of each house of a high-rise housing, for example, drainage connecting a horizontal running pipe and a drainage stack pipe. The present invention relates to a method for causing waste water to flow down in a vertical pipe joint (hereinafter, also referred to as "pipe joint").

[0002]

BACKGROUND OF THE INVENTION In a drainage stack (hereinafter, also referred to as "standpipe" or simply "pipe") system of an apartment house, so-called simultaneous use of connected drainage devices is likely to occur, This causes an excessive drainage load. Therefore, ventilation in the pipe is obstructed, and a large pressure fluctuation occurs. This causes the induction siphon action and the destruction of the trap sealing water, such as the trap sealing water blowing on the lower floor, which causes a problem such as a bad odor entering the room.

Particularly, when a laterally running pipe for discharging a relatively large amount of drainage such as a toilet bowl drain is connected, the drainage and the drainage flowing down in the vertical pipe are directly connected in the pipe joint. Venting may be hindered due to, for example, a merge collision, and the trap water may be easily destroyed.

Especially, in a super high-rise apartment house, since many drainage appliances are connected to one vertical pipe system, an excessive load is likely to occur due to simultaneous drainage, which is a problem.

In order to prevent such a problem from occurring, it is obligatory to properly install a ventilation pipe in the design and construction of the drainage pipe, while reducing the fluctuation of the air pressure inside the pipe even when draining a heavy load. , Pipe fittings have been developed that are said to be effective in protecting trap water.

-Conventional Example- Various pipe joints have been solved to solve the above problems.

As an example thereof, there is a technique described in Japanese Patent Publication No. 62-3359.

In this publication, a tongue piece is provided in a hanging shape so as to substantially face the inner opening of the lateral branch pipe (lateral running pipe) connection port on the side of the expanded portion of the pipe joint body. A space is provided at a portion not facing the lateral branch pipe connection port by interposing a side edge of the tongue piece.

With this construction, the different levels of the region with the tongue and the region without the tongue in the expanded portion are the base ends,
Vertical pipe drainage will be divided and fall in a diffused manner.
Further, the action of the tongue piece prevents the direct merging collision between the vertical pipe drainage and the lateral pipe drainage, thereby maintaining the ventilation in the pipe and protecting the trap water.

As another example, by providing a plate member called a blade inside, the drainage is pressed against the inner wall of the pipe joint and the vertical pipe and dropped while swirling,
A technique is known in which a ventilation core is positively formed in the center of the vertical pipe drainage so as to communicate the air in the drainage pipe system and suppress pressure fluctuations. (See, for example, JP-A-61-31539 and JP-A-49-68550)

[0011]

The pipe joint described in the former publication has the following problems to be solved.

According to the above-mentioned Japanese Patent Publication No. 62-3359, the drip-like falling property of the vertical pipe drainage and the linear confluent collision of the vertical pipe drainage and the lateral running pipe drainage due to the action of this tongue. Based on the prevention, it is intended to maintain the ventilation in the pipe and protect the trap water. Therefore, the point of suppressing the pressure fluctuation obtained by reducing the falling speed of the vertical pipe drainage is as follows.

That is, although a slight decelerating action obtained by diffusing and dropping the wastewater can be expected, there is no means for positively reducing the falling speed of the wastewater. For this reason, it is effective to reduce the pressure fluctuations in middle-to-high-rise houses and super high-rise apartments that are often built in recent years. There is a problem that it is not possible to deal with the problem that the pressure fluctuation is reduced by flowing it down.

On the other hand, in Japanese Patent Laid-Open No. 61-31539, the drainage flowing from the upper drainage vertical pipe is bent and deflected by the downwardly inclined partition plate to decelerate and press it against the inner wall of the collecting chamber, and the lower blades. The plate is designed to give turning ability. Therefore, the formation of the swirling flow is insufficient and the blades are protruded inside, resulting in a complicated structure. Therefore, slime or the like is likely to adhere to the portion due to aging or the like, and due to keratinization or the like, swirlability of drainage tends to be insufficient, resulting in a problem in long-term performance.

Further, when it is used in a sewage pipe for discharging a large amount of excrement, toilet paper, sanitary products and other contaminants due to its complicated structure, there is a risk of clogging due to adhesion of these substances. It has the disadvantage that it is highly flexible.

[0016] In particular, when used in a super high-rise apartment house which is likely to cause a large load, both have serious problems. In the case of Japanese Patent Laid-Open No. 49-68550, drainage flowing from an eccentric laterally running pipe is pressed against the inner peripheral wall of the large-diameter portion and dropped, and is guided in a spiral shape by changing the direction at the lower convex portion. For the wastewater falling from the upper drainage vertical pipe, it is only directly received by the convex surface and guided in a spiral shape, and the swirling flow formation of the wastewater falling from the upper drainage vertical pipe was insufficient. .

In view of the problems to be solved, the present invention provides a method of draining drainage which allows foreign substances to pass through smoothly and does not complicate the internal structure of the drainage stack fitting. With the goal.

[0018]

Means for Solving the Problems In order to solve the above-mentioned problems, the method of flowing wastewater according to the present invention is carried out as follows. That is, a horizontal running pipe connection port is provided, and a large-diameter portion formed to have a diameter larger than the inner diameter of the drainage stack pipe to be connected to the lower part of the upper drainage stack pipe connection port for connection of the upper drainage stack pipe. And a tongue piece having a substantially semi-arcuate shape provided with a convex portion projecting inward on the plane from the inner diameter of the drainage standpipe on the inner side of the expanded portion. A drainage downflow method for a drainage vertical pipe joint, wherein the tongue piece is integrally provided from the pipe joint body, the tongue piece is arranged at substantially the same height as the laterally running pipe connection port, and the convex The part inclines inward, and the projecting edge of the inclining convex part is seen in a front view.
In addition, the lengthwise direction of the projecting edge is formed to be inclined with respect to the tube axis .

[0019]

[0020]

According to the above-described flow-down method, when there is a large amount of vertical pipe drainage which is a problem in drainage ventilation performance, the drainage reaches this pipe joint and is given a primary swirl at the convex portion to become a swirl flow. It is delivered to the protruding part that rises from the upper part of the funnel part. Then, the secondary swirl is imparted so as to be pressed against the inner wall surface of the inner wall surface of the drainage flow path along the inclination thereof, and the secondary wall is decelerated and drops into the lower drainage stack. At this time, an air core is formed in the center of the vertical pipe drainage at a position where the vertical pipe is swung and falls, so that ventilation is communicated with the inside of the pipe. Further, the drainage flowing in from the laterally running pipe flows into the protrusion along with the drainage from the upper side to which the primary swirl is given, is given the secondary swirl, and drops into the drainage stack pipe below.

As a result, the pressure fluctuation in the pipe is effectively suppressed, and it is effective for protection of the trap water. Further, since foreign matter or the like is less likely to be clogged in the protruding portion rising from the upper portion of the funnel portion and the structure is not complicated, stable performance can be maintained for a long period of time.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A position embodiment of a drainage vertical pipe joint according to the present invention will be described below with reference to FIGS.

In FIG. 1, reference numeral 1 is a main body of the pipe joint according to the present embodiment, and the main body 1 has an upper stand pipe Pa on the upper side.
A cylindrical shape having an upper drainage vertical pipe connection port 2 (also referred to as an upper vertical pipe connection port) for connection, and having an inner diameter larger than the internal diameter of the vertical pipe Pa and the internal diameter of the upper vertical pipe connection port 2 below it. The bulging portion 3 is formed on the. A lateral running pipe connection port 4 for connecting the lateral running pipe Pb is provided on a side surface of the expanded portion 3, and the lateral running pipe Pb is connected via an intermediate joint 5 as described later. . In addition,
In this embodiment, the lateral running pipe connection ports 4 are arranged at three positions at intervals of about 90 ° on the plane.

Below the bulging portion 3, there is provided a funnel portion 6 which is tapered downwardly and has a taper shape of about 30 degrees. The pipe portion 9 is provided, and the drainage passage W is constituted by these.
A protruding portion 8 is formed on the inner peripheral wall of the drainage flow passage W so as to protrude. Further, at the lower end of the straight pipe portion 9, a lower drainage vertical pipe connection port 11 (also referred to as a lower vertical pipe connection port) for connecting a lower vertical pipe Pc is provided.

On the inside of the expanded portion 3, a tongue piece 12 having a substantially semicircular arc shape on a plane is formed in a hanging shape along the lower edge of the upper stand connection port 2. This tongue 1
As shown in FIG. 1, 2 is an inclined plate shape having a downward inclination of about 45 degrees with its substantially vertical center portion as a base end. It is provided with a convex portion 13 formed in the shape of a segment of a protruding circle. That is, the convex portion 13 is a plate-shaped member having a section of a circle that inclines downward inward and horizontally extends in the secant direction with respect to the extension line of the inner peripheral surface of the stand pipe Pa. It is integrally formed in the lower part of 12.

However, as will be described later, the convex portion 13 of the tongue piece 12 is constructed so as to also serve as an introducing portion for generating a swirling flow as well as a resistance effect in the fall of the vertical pipe drainage. Although details will be described later, even under this action, the ventilation with the stand pipe is sufficiently maintained.

In the present embodiment, the tongue piece 12 is provided at a portion substantially facing the inner opening 4a of the lateral running pipe connection port 4 (right side in FIG. 1).

Further, the amount of protrusion of the convex portion 13 inward is appropriately selected depending on the pipe diameter, the drainage load, the angle of inclination of the convex portion inward with respect to the horizontal, and the like. It is about 25% of the inner diameter of Pa. The convex portion 13 is located in the expanded portion 3 in front of the convex portion 13 (see FIG.
The left side) and the rear part (right side in FIG. 1) are formed so as to hold a space forming a drainage flow channel of a required size that can correspond to a vertical pipe, a lateral running pipe, and the like, respectively.

Next, the expanded diameter portion 7 and the protruding portion 8 will be described in detail.

In this embodiment, the protruding portion 8 is located below the convex portion 13 of the tongue piece 12 and at the joint portion of the straight pipe portion 9 and the funnel portion 6 with the enlarged diameter portion 7 interposed, and the inner peripheral wall of the drainage passage W is formed. It is formed in a downward left-handed spiral shape substantially conforming to.
The expanded diameter portion 7 has a wall surface that is vertically provided from the outer peripheral edge of the protruding portion 8, and is formed in an expanded diameter shape above the straight pipe portion 9.

The protrusion 8 has an upper end portion 8a having a circular section in plan view on the upper surface thereof, and the protrusion portion 1 of the tongue piece 12 is flat.
It is provided at a position facing 3 This upper end 8a
Is provided so as to bite inward by about 25% from the extension line of the inner peripheral surface of the stand pipe Pa, and is inclined up and down about 25 degrees in the secant direction. As a result, the projecting portion 8 has a projecting edge 8b projecting in a V-shape in a vertical cross section at the upper end portion 8a thereof. In addition, the protruding portion 8 is
As it goes downward from the upper end 8a of the spiral,
The width is gradually narrowed, and in the present embodiment, the width is such that it swivels almost once and converges at the lower end 8c slightly above the lower standpipe connection port 11.

However, the vertical pipe drainage directed by the inclination of the convex portion 13 of the tongue piece 12 is transferred to the projecting portion 8 and a positive swirling flow is generated by the action of centrifugal force. The width of the protruding portion 8 is appropriately selected depending on the pipe diameter and the like.

In the present embodiment, the lateral running pipe Pb has its end inserted into the intermediate joint 5 formed in a tubular shape, and the tightening nut 16 is screwed to the end via the ring-shaped packing 15. By this, it is connected while holding the honey of this part. This intermediate joint 5 has screw holes at four corners,
For the mounting seat 4c of the intermediate joint of the lateral running pipe connection port 4,
The flange 5a part, with the packing 17 interposed, the bolt 1
By tightening with 9, the watertightness of this part is maintained. In addition, this horizontal running pipe connection port 4
The number of is properly selected as needed.

In this embodiment, the lateral running pipe Pb is connected through the intermediate joint 5, but the intermediate joint may be integrally formed with the main body 1.
Of course it is possible.

In addition, the upper stand pipe Pa and the lower stand pipe P
c is inserted into the upper vertical pipe connecting port 2 and the lower vertical pipe connecting port 11, respectively, and the ring-shaped packing 21 has an annular tightening flange 22 and the bolt 2 although the shapes are different from each other.
It is connected in a state of maintaining watertightness by pressing through 3 or the like.

Next, the operation and effect of this embodiment will be described.

In the case of piping using the pipe joint of this embodiment, a large amount of drainage discharged from the lateral running pipes on the upper floors enters the main body 1 from the upper standing pipe Pa and has the following columnar shape. Show.

That is, the drainage becomes a water mass and the main body 1
To the tongue piece 12 as shown by the solid arrow in FIG.
It collides with the upper surface of the convex portion 13 and is guided in the downwardly inclined projecting direction of the convex portion 13, and suddenly changes its course in that direction and collides with the opposing inner wall surface. At the same time, while being transferred to the funnel portion 6 or the projecting portion 8 and along the spiral inclination of the inner peripheral wall of the drainage flow path W, as shown by the two-dot chain line arrow and the broken line arrow in the figure, The centrifugal force acts on the inner wall surface so that the inner wall surface is swung, and the swirl is performed.

At this time, the wastewater colliding with the convex portion 13 scatters in the expansion portion 3 or the funnel portion 6, so that the wastewater flow inevitably becomes coarse and dense in that portion. In addition, by the air core formed in the central portion of the vertical pipe drainage that swirls and falls, together with the dense and dense portions, the vertical pipes Pa, P with the upper and lower ventilation are provided.
Connect to b.

Thus, according to the pipe joint of the present embodiment, the convex portion 13 decelerates and at the same time the action of introducing a swirling flow is fulfilled, and at the same time, the projecting portion 8 fulfills a swirling action. Combined with both of these actions, the falling speed of the vertical pipe drainage is reasonably reduced, and the swirlability is further improved.
It produces a swirling flow that has been accelerated. As a result,
The pressure fluctuation in the pipe is effectively suppressed. Moreover, since the structure is simple, it is clear that this effect can be preserved for a long time.

In the present embodiment, the tongue piece 12 is provided at a portion that substantially opposes the inner opening 4a of the one lateral running pipe connection port 4. Therefore, this horizontal running pipe connection port 4
Even if there is a large amount of drainage in the main body 1, direct merging collision between the drainage and the vertical pipe drainage is avoided, so it is more effective in maintaining the ventilation in the pipe and protecting the trap water. Is.

In the above-described embodiment, the case where the convex portion 13 of the tongue piece is linearly inclined downward by about 45 degrees has been shown. However, drainage is effectively transferred to the projecting portion. If it is a thing, you may incline in an appropriate curved shape. The convex portion does not necessarily have to be formed in a plate shape, and may be in the form of a boss.

Further, although the tongue piece is shown as being integrally formed in a hanging shape along the lower edge of the upper standpipe connection port, the invention is not limited to this. Of course, it can also be integrally formed from the side wall of the expanded portion. Further, the horizontal sectional shape thereof does not necessarily have to be an arc shape. It can also be V-shaped or linear.

Further, the protrusion in the above embodiment is
Although the upper portion is provided with the protruding edge as described above, the present invention is not limited to this. Further, the number of turns and the lead of the spiral of the protruding portion formed by being inclinedly provided along the inner peripheral wall of the drainage flow channel may be selected within a range in which the swirling flow is effectively obtained.

FIGS. 7 to 10 show a second embodiment of the present invention, in which a projecting edge has a convex portion inclined in its length direction and a plurality of symmetrically provided projecting portions. It is characterized by points. In the following description, constituent elements that are the same as or equivalent to those in the first embodiment will be assigned the same reference numerals and description thereof will be omitted.

The main body 31 of the second embodiment comprises an expanded portion 3, a funnel portion 6 and a straight pipe portion 9, and an upper stand pipe connection port 2, a lower stand pipe connection port 11 and a lateral running pipe are provided at predetermined positions. Connection port 4
Is formed. In addition, the funnel portion 6 of the present embodiment,
It is formed in a taper shape tapering downward at about 15 degrees, and its lower end portion is formed continuously with the straight pipe portion 9.

In addition, at a predetermined position of the main body 31, a convex portion 33
And a pair of protrusions 38 are provided. The convex portion 33 is formed in a substantially circular segment shape, and protrudes from the inner wall of the tongue piece 12 toward the center line direction of the main body 31. Then, the protruding edge 33a has a downward inclination of about 45 degrees from the outer peripheral side toward the inner side, and also has a downward inclination of about 50 degrees toward the left side in the longitudinal direction of FIG. Are arranged.

Therefore, the convex portion 33 is formed so as to change the flow direction of the falling vertical pipe drainage toward the inner wall surface facing the vertical pipe and to positively turn the flow leftward (primary turning).

The projecting portion 38 is formed in a projecting shape on the inner peripheral walls of the funnel portion 6 and the straight pipe portion 9 forming the drainage flow path W. In the embodiment, the two projecting portions 38 are at the center of the main body 31. It is provided symmetrically about the line.

The projecting portion 38 is formed as a projecting strip portion projecting inward from the inner peripheral wall so that the upper end portion 38a rises from the upper portion of the funnel portion 6 and the lower end portion 38c converges at the upper portion of the straight pipe portion 9. There is. Further, the protruding portion 38 has a downward slope of about 55 degrees, and is formed such that the intermediate portion in the length direction is widest.

Further, the projecting edge 38b of the projecting portion 38 bites inward by about 20% from the extension line of the inner peripheral surface of the stand pipe Pa on the plane and is orthogonal to the end edge 33a of the convex portion 33 on the plane. Is disposed at a position (see FIG. 9).
A line groove portion 38d corresponding to the protrusion of the protrusion 38 inward is formed. The groove 38d substantially corresponds to the length of the protruding portion 38 and is formed to be deepest at the intermediate portion in the length direction. With the groove portion 38d, the main body 31 can be configured with high rigidity, and convenience in handling can be easily performed due to a difference in appearance.

According to the drainage vertical pipe joint having such a main body 31, the drainage from the upper floors enters the main body 31 from the upper vertical pipe Pa and collides with the convex portion 33.

Then, due to the inward downward inclination and the downward leftward inclination of the edge 33a of the convex portion 33, the flow direction is suddenly changed and the water drops W in the drainage passage W. That is, the drainage is densified and positively guided so as to make a left turn (a primary turn).

The waste water that has dropped into the waste water flow path W is received by the inner peripheral wall of the funnel portion 6 and the pair of protruding portions 38. Then, the drainage is pressed against the inner peripheral wall by the action of centrifugal force, and is guided by the downward inclination of the protrusion 38,
They are aggregated while making a left turn (secondary turn), and are dropped into the drainage stack Pa while being decelerated.

On the other hand, the drainage flowing into the main body 31 from the laterally running pipe Pb collides with the tongue piece 12 and is decelerated, and is primarily swirled without directly joining and colliding with the drainage flowing down from the upper pipe Pa. With the drainage from above, the protrusion 3
8 is transferred so as to flow into the upper end portion 38a of No. 8.

Therefore, according to this pipe joint, the convex portion 3
3 performs a swirling guide action for the flow, and drainage that is flowed down from the upper vertical pipe Pa that is primarily swirled by the plurality of protrusions 38 to scatter and densify it and inflow from the lateral running pipe Pb to scatter and densify Since the collected wastewater is accurately received and the wastewater is concentrated and swirled, the both functions are combined to effectively reduce the drop rate of the wastewater and increase the vertical pipes Pa, P.
Vent formation of the c-tube can be performed.

The number of protrusions formed may be three or more, and the protrusions are axially symmetrically arranged.

[0058]

As described above, according to the drainage flow-down method in the drainage vertical pipe joint according to the present invention, the downward expansion from the upper drainage vertical pipe is achieved by forming the integrally formed convex portion of the expansion portion. The drained water is decelerated and a primary swirl is applied to allow it to flow down to the funnel portion below. The wastewater swirled in the convex part flows down from the expansion part while swirling along the peripheral wall of the funnel part.
An air core will be formed in the center of the swirling flow,
The ventilation performance can be improved.

Further, the drainage flowing down while making a primary swirl and the drainage flowing in from the laterally running pipe are given a secondary swirl by the protrusions integrally arranged in the funnel part, and swirl the peripheral wall part of the pipe. While turning into a swirling flow to the drainage flow path,
An air core is formed at the center of the swirling flow to improve ventilation performance. Therefore, the pressure fluctuation in the pipe is effectively suppressed, and it is effective for protecting the trap water. And, in the protruding part rising from the upper part of the funnel part,
Since foreign matter is unlikely to be clogged and the structure is not complicated, stable performance can be maintained for a long period of time.

[Brief description of drawings]

[Fig. 1] Front elevation sectional view

FIG. 2 is a sectional view taken along line II-II of only the main body in FIG.

FIG. 3 is a sectional view taken along line III-III of FIG.

FIG. 4 is a sectional view taken along line IV-IV of FIG.

[Fig. 5] Sectional view of the same line V-V

6 is a plan view of FIG.

FIG. 7 is a front vertical cross-sectional view of the second embodiment.

FIG. 8 is a sectional view taken along line AA of only the main body in FIG.

FIG. 9 is a sectional view taken along line BB of FIG.

10 is a plan view of FIG.

[Explanation of symbols]

1, 31 ... Main body 2… Upper drainage stack connection port 3 ... Expansion 4. Horizontal running pipe connection port 4a ... opening 8, 38 ... Projection 11 ... Lower drainage stack connection port 12 ... tongue 13, 33 ... convex portion W ... Drainage channel Pa ... drainage stack on top Pb ... Lateral running tube Pc ... Drainage stack at the bottom

Continued front page       (56) References JP-A-61-31539 (JP, A)                 Japanese Unexamined Patent Publication No. 2-8427 (JP, A)                 JP 63-297636 (JP, A)                 JP-A-49-68550 (JP, A)

Claims (4)

(57) [Claims] 1. A large-sized pipe having a horizontal running pipe connection port and having a diameter larger than the inner diameter of the drainage vertical pipe to be connected to the lower portion of the upper drainage vertical pipe connection port for connecting the upper drainage vertical pipe. A tongue piece having a substantially semi-arcuate shape is provided, which is provided with a bulging portion having a diameter portion, and is provided with a convex portion projecting inwardly on a plane from the inner diameter of the drainage standpipe to the inside of the bulging portion. A drainage method of a drainage vertical pipe joint configured to be provided, wherein the tongue piece is integrally provided from the pipe joint body, and the tongue piece is arranged at substantially the same height position as the lateral running pipe connection port, In addition, the convex part inclines downward and inclines downward.
The protruding end in a front view of the protruding end edge of the projected portion
A drainage flow-down method, characterized in that the length direction of the edge is formed to be inclined with respect to the pipe axis . 2. A drainage flow path between the convex portion and a lower drainage stack connection port for connection of a lower drainage stack,
The drainage flow-down method for a drainage pipe joint according to claim 1, wherein the drainage flowpath joint is configured by providing a step portion that is inclined along the inner peripheral edge of the drainage flow path. 3. A large-sized pipe having a lateral running pipe connection port and having a diameter larger than the inner diameter of the drainage vertical pipe to be connected to the lower part of the upper drainage vertical pipe connection port for connecting the upper drainage vertical pipe. A tongue piece having a substantially semi-arcuate shape is provided, which is provided with a bulging portion having a diameter portion, and is provided with a convex portion projecting inwardly on a plane from the inner diameter of the drainage standpipe to the inside of the bulging portion. A drainage downflow device for a drainage vertical pipe joint configured to be provided, wherein the tongue piece is integrally provided from the pipe joint body, and the tongue piece is arranged at substantially the same height position as the lateral running pipe connection port, In addition, the convex part inclines downward and inclines downward.
The protruding end in a front view of the protruding end edge of the projected portion
A drainage downflow device, characterized in that the length direction of the edge is formed to be inclined with respect to the pipe axis . 4. A drainage flow path between the convex portion and a lower drainage stack connection port for connection of a lower drainage stack,
4. The drainage downflow device according to claim 3, wherein a step portion is provided which is inclined along the inner peripheral edge of the drainage flow path.