JPH09158276A - Method for making drainage flow down in collecting pipe for draining - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure an air core in a draining pipe. SOLUTION: In a method for making drainage flow down in a collecting pipe for draining, the top and the bottom constitute opening joint parts 4, 5 for riser pipe 1, 2 for drainage, and the top and bottom of the joint parts 4, 5 are made as swollen part 3a having a greater diameter than the riser pipes 1, 2, and the bottom of this swollen part 3a is formed as a tapered peripheral surface 3b as narrowing downward. The drain water from a lateral branch pipe 9 connected with a water closet or source of various waters is allowed to flow into the swollen part 3a, and this water flowing in and the drain water flowing down from the riser pipe 1 into the swollen part 3a are given a swirl on the tapered peripheral surface 3b and are allowed to flow down from the lower situated joint part 4 as a swirling stream in creeping on the inside surface of the riser pipe 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage drainage pipe in a drainage collecting pipe which is interposed in a drainage pipe of a one-pipe type drainage pipe for flowing sewage and miscellaneous drainage, which is used in middle and high-rise apartment houses and the like. Regarding the method.

[0002]

2. Description of the Related Art The construction of a drainage pipe in a one-pipe type drainage pipe is
From the upper floor to the lower floor, a number of drainage pipes are connected and penetrated into a single drainage pipe, and sewage and miscellaneous drainage in the living quarters on each floor are flowed into the drainage drainpipe via horizontal branch pipes. In this case, the drainage receiving pipe on each floor is a tubular body having a diameter larger than that of the drainage standing pipe, and a joining opening for the horizontal branching pipe is formed in a protruding shape on a peripheral side surface thereof. The problem with this one-pipe drainage pipe is that when drainage flows down the drainage riser, the higher the pipe height is, the larger the drainage rises from the upper floor to the lower floor. It is the point of air pressure fluctuation and drainage noise.

[0003] Means conventionally adopted to solve this problem include, for example, a large-diameter pipe shape in a collecting pipe, a simple cylindrical shape and at least a lower half having a tapered throttle structure, or a horizontal branch pipe. Or a baffle plate is provided at a connection portion with the above, or a drainage flow control structure is provided inside the collecting pipe. Regarding this point, the present applicant also formed a spiral blade body whose width was gradually narrowed toward the start end and the end thereof on the inner peripheral surface of the large-diameter tubular gathering portion, and formed a protruding shape below the blade plate. (See Japanese Patent Publication No. 57-18015).

[0004] Further, French Patent No. 2402041 discloses a connecting branch pipe for connecting a sanitary fitting and a drainage riser, and the connection branching part of the connection branch with the upper drainage riser has a large diameter. The side joint (branch connection part) that is connected to the sanitary fitting in the small diameter straight pipe part following the reception part
Is formed in an inverted U shape, and a circular ring formed with a projection element for rotating drainage is fitted to a tapered portion that transitions from the receiving portion to a small straight pipe portion below. It is.

[0005]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In the device described in JP-A No. 015, the fluctuation of the air pressure in the pipe is eliminated by swirling the downflow drainage by the blade body to generate a vertically penetrating air core along the pipe axis. . However, in this known example, the drainage that has become a swirl flow due to the blade body is a gradient peripheral surface where the drainage below it is most likely to be dense, and since a centripetal force acts when flowing down toward the pipe center, There is a problem in that the centrifugal force applied is weakened, the formed air core is blocked by drainage in some cases, and the fluctuation of the air pressure in the pipe increases.

On the other hand, in the above-mentioned French patent, the downflow drainage is swirled by the above-mentioned projecting element at the receiving portion. The drainage from the sanitary fittings flows into a small-diameter straight pipe from the side joint. Therefore, the flow of the drainage flow to which the swirling force has been applied at the receiving portion is disturbed by the flow from the sanitary appliance, and it becomes difficult to maintain a strong swirling state, and the drainage flow from the sanitary appliance is large. In addition, there is a problem that a large fluctuation in the air pressure in the pipe occurs as in the case of Japanese Patent Publication No. 57-18015.

[0007]

The present invention is characterized by solving the problems of the prior art in that the upper and lower ends are:
It is an opening joint for joining the drainage riser, and between the upper and lower portions of the two opening joints is an enlarged portion having a larger diameter than the drainage riser,
The lower end of the enlarged portion is provided with a drainage flow in a drainage pipe having a narrow upper and lower sloped peripheral surface, wherein drainage from a horizontal branch pipe connected to a toilet or a miscellaneous drainage source is discharged into the enlarged portion. And the swirl is given to the drainage that has flowed in and the drainage that flows down from the upper drainage riser into the enormous portion on the gradient peripheral surface. The point is that it flows down as a swirling flow along the inner surface of the pipe.

[0008] The drainage flowing down from the upper drainage riser and the drainage from the horizontal branch pipe both flow down while being swirled on a narrow slope surface having a narrow top and bottom.
The stagnation does not occur at the center of the pipe, and it keeps a strong turning state and flows down to the lower drainage pipe. Then, the swirling force is reliably applied to the drainage by the blade body provided on the slope peripheral surface.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below with reference to the illustrated embodiments. FIG. 1 shows an example of a drainage collecting pipe used in the present invention. The drainage collecting pipe 3 interposed between the upper drainage riser 1 and the lower drainage riser 2 is provided at both upper and lower ends in the direction of the pipe axis XX by the known watertight connection structure with the above-described two-standpipe 1,2. Opening joints 4 and 5 to be connected are formed. The tube main body portion connecting the two joint portions 4 and 5 is an enlarged portion 3a having a larger diameter than the standing tubes 1 and 2. This huge part 3
The lower part extending from a to the opening joint part 5 at the lower end is a tapered cylindrical part having a wide upper and lower part having a gentle sloped peripheral surface 3b therein as shown in the figure. In the enlarged portion 3a, a tongue-shaped partition plate 6 is provided which protrudes downward from one side of the inner peripheral surface of the lower end of the opening joint 4 at the upper end toward the tube axis XX.

The partition plate 6 allows the upper drainage stack 1
The drainage flow that flows down is expanded 3a as shown by the arrow a.
A deceleration deceleration chamber 7 is formed, which deviates and decelerates toward one side of the inner peripheral surface of the deflector. This drift deceleration chamber 7 occupies almost the entire upper part of the enlarged portion 3a in combination with the hanging length of the partition plate 6. In the middle part following the drift deceleration chamber 7, the drainage flow from the drainage riser 1, which has been drifted and decelerated by the partition plate 6, and the drainage flow from the horizontal branch pipe that flows in from the peripheral side of the enlarged part 3 a merge. To be a meeting room 8.

That is, the deceleration deceleration chamber 7 is formed by the partition plate 6.
A drain or a drainage source is connected in the opposite direction of the drainage flow from the standing pipe 1 which is biased into one side of the collecting room 8 or on the peripheral side of the collecting room 8 as far away as possible. One or more branch pipe joints 10 connected to the formed horizontal branch pipe 9 are provided in a protruding opening shape. In the example of this figure, one is shown, but the length of the expanding section 3a along the tube axis XX line direction is increased so that the length of the collecting chamber 8 is increased. And two or more branch pipe joints 1
It is of course free to provide 0.

The lower part, which is surrounded by the above-mentioned gentle peripheral surface 3b following the collecting chamber 8, has a drainage flow from the drainage vertical pipe 1 and the horizontal branch pipe 9 joined in the collecting chamber 8,
A swirl chamber 11 is formed to flow down to the lower drainage stack 2 via the opening joint 5 at the lower end. On the inner wall surface of the swirl chamber 11, that is, on the gradient peripheral surface 3b, the drainage from the drainage riser 1 side indicated by the arrow A and the collective flow of the drainage from the horizontal branch pipe 9 indicated by the arrow B As shown by arrow C, a plurality of blade plates 12 are protruded so as to flow down the drainage vertical pipe 2 while spirally turning around the pipe axis XX.

That is, each of these blade plates 12 has a tube axis X-
A substantially trapezoidal plate body inclined with respect to X-rays,
And it is projected along the up-down direction of the gradient peripheral surface 3b, and its width is gradually reduced from the upper end to the lower end. is there. The horizontal branch pipe 9 and the branch pipe joint 10 are connected by a known water sealing connection structure.

The collecting pipe 3 exemplified in FIG. 1 is shown as an integral structure from the opening joint 4 at the upper end to the opening joint 5 at the lower end, but the collecting pipe used in the present invention is shown in FIG. 3 may be of a vertically divided structure. This is illustrated in the collecting pipe 3 illustrated in FIGS. In the overall view shown in FIGS. 2 and 3 and the partial views shown in FIGS. 4 to 9, the collecting pipe 3 has an opening joint 4 at the upper end.
And a lower collecting pipe 14 having an opening joint portion 5 at the lower end.
The lower end and the upper end of 14 are integrally connected by a flange joint 15.

That is, as shown in detail in FIG. 10, a receiving edge 14a for supporting a lower end of the upper collecting pipe 13 is formed at an upper end of the lower collecting pipe 14, and a flange 14b is formed following the receiving edge 14a. The lower end of the upper collecting pipe 13 is inserted into the receiving edge 14a, and a rubber or other sealing material 16 is interposed between the outer periphery of the lower end and the overhanging flange 14b. A separate mounting flange 17 is brought into contact with the sealing material 16 and
The b and 17 are integrated by being fastened by fastening bolts 18 and nuts 19. Of course, this connection structure only shows an example.

In the collecting pipe 3 formed by dividing the upper and lower collecting pipes 13 and 14, the pipe main body connecting the opening joint 4 at the upper end and the opening joint 5 at the lower end has a larger diameter than the standing pipes 1 and 2. The upper collecting pipe 13 is provided with a partition plate 6 having a shape that bends into a substantially S-shape in the illustrated example from the lower end of the opening joint section 4 in the upper collecting pipe 13. The drift deceleration chamber 7 is formed so as to be shifted to one side. According to the shape of the partition plate 6, the outer peripheral wall extending over substantially half the circumference of the upper collecting pipe 13 is formed as a bent overhang 13a as shown in the figure. The length of the partition plate 6 is also extended to the lower part of the upper collecting pipe 13. A collecting chamber 8 is formed between the open lower end of the upper collecting pipe 13 starting from the lower end of the partition plate 6 and the open upper end of the lower joint pipe 14 over both pipes. Therefore, on the other upper side of the collecting chamber 8, a preliminary collecting chamber 8 a which is a space on the opposite side of the drift reducing chamber 7 of the upper collecting pipe 13, that is, on the opposite peripheral side defined by the partition plate 6, is formed in a communicating manner. Will be. This preliminary collecting chamber 8a is also formed as a portion 8a formed on the back side of the partition plate 6 in FIG. 1 described above, but in FIG. It can be formed more clearly and as a large space.
In FIG. 2, the long collecting chamber 8 utilizing the upper and lower joining portions of the upper and lower collecting pipes 13 and 14 and the preliminary collecting chamber 8a formed by the shape of the partition plate 6 are clearly formed, so that both the collecting chambers 8 are formed as shown in FIG. Utilizing the chambers 8, 8a, a plurality of branch pipe joints 10a, 10b having steps at the top and bottom thereof can be formed as shown in FIGS.

That is, in the pre-collection chamber 8a corresponding to the back side of the partition plate 6, in the illustrated example, three upper branch pipe joints 10a having different inflow directions are used by utilizing the peripheral side of the upper collecting pipe 13. In the collecting chamber 8, one branch pipe joint 10b is provided in the same manner as the lower joint in the collecting chamber 8 using the peripheral side of the lower collecting pipe 14 as a lower joint. . These upper and lower branch pipe joints 10a, 10b
For example, the upper branch pipe joint 10a is connected to a horizontal branch pipe connected to a toilet bowl, and the lower branch pipe joint 10b is connected to a horizontal branch pipe connected to a kitchen or other wastewater source. As part, or vice versa, it is possible to receive inflows of multi-directional, multi-species sewage and gray water. Following the lower end of the collecting chamber 8 formed by using the open upper end in the lower collecting pipe 14, the swirling chamber 11 surrounded by the gentle gradient peripheral surface 3 b extends between the swirling chamber 11 and the opening joint 5 at the lower end. As shown in FIG. 3 and FIG. 5, a plurality of inclined sheets for imparting swirling properties to the collected drainage flowing down from the collecting chamber 8 are formed on the inclined peripheral surface 3 b of the swirling chamber 11. The blade plate 12 has a tube axis XX like the one shown in FIG.
It is projected in a circumferentially equally-distributed shape in a posture inclined with respect to the line. As shown in the figure, the width of these blades 12 is gradually reduced from the upper end to the lower end.

In FIG. 3, the blade plate 12 is formed by
b, but is formed continuously from the opening joint portion 5, but may be formed only on the gradient peripheral surface 3b, or may be formed from the collecting chamber 8 to the gradient peripheral surface 3b, or from the collecting chamber 8 to the gradient peripheral surface 3b. It may be formed continuously through the opening joint portion 5 through the opening. In the use of the collecting pipe 3, in the same manner as the conventional collecting pipe of this type, when the drain pipe is formed by vertically connecting the drainage pipes vertically from the upper floor to the lower floor, the collecting pipe is provided for each floor. 3 intervenes. Sewage from the toilet bowl and miscellaneous wastewater from the kitchen and the like at that floor are allowed to flow into the collecting pipe 3 through each horizontal branch pipe, and the drainage flow flowing down the drainage stack and the drainage flow from the horizontal branch pipe are collected into the collecting pipe. Merge in 3 and drain continuously to the lower floor. The top of the drainage system will be open to the atmosphere, and the bottom will be guided to a drainage office as appropriate.

According to the drainage flow method using the above-mentioned collecting pipe 3, the drainage water flowing down from the upper drainage pipe 1 flows down to the drift deceleration chamber 7 guided from the opening joint 4 to the partition plate 6. By doing so, in combination with the curved shape of the partition plate 6, the partitioning plate 3 is biased toward one side of the expanded portion 3 a of the collecting tube 3 and flows down. That is, the vertical drainage from the standing pipe 1 does not flow into the collecting pipe 3 over the entire area of the large-diameter portion, but the drainage speed is reduced by the bending drift due to the partition plate 6 to increase the air pressure in the pipe. To prevent and reinstate the horizontal branch pipe 9
The interference due to the direct collision with the inflow water is eliminated, and the rise in the air pressure in the pipe is eliminated. In addition, it is possible to prevent the backflow to the side branch pipe 9 side, and a smooth and quiet merge in the collecting room 8 with the side drainage flowing from the side branch pipe 9 through the branch pipe joints 10 to 10a is expected. You can.

Therefore, in the next collecting chamber 8, the standing pipe 1
And the effluent from the horizontal branch pipe 9 are merged in a bundle, and the turbulence due to mutual interference is small, so that the fluctuation of the air pressure in the pipe is reduced, and the drainage noise is smooth and small. The merging effect is obtained, and the merged wastewater flows down into the lowest swirl chamber 11. The swirling chamber 11 has a cross-sectional shape narrowed down by a gentle slope 3b, and the slope 3
In b, a plurality of blades 12 inclined with respect to the pipe axis direction are protruded in a circumferentially equally-spaced manner. 12, it is swiveled down around the pipe axis, flows down smoothly and smoothly without the occurrence of a faucet phenomenon, and the lower drainage pipe through the opening joint 5. It is guided and discharged to the two sides accurately.

The swirling by the blade plate 12 can generate an air core along the pipe axis in a vertically penetrating manner, so that drainage can be obtained in a stabilized state without fluctuating air pressure in the pipe. A reduction in noise will be obtained. In addition, since the blade plate 12 is provided so as to protrude from the sloped peripheral surface 3b, the swash plate 11 is provided with an appropriate inclination angle in the vertical direction, so that the drainage flow in the swirl chamber 11 does not stagnate or stagnate. Drainage discharge can be reliably obtained.

The gentle gradient of the gradient peripheral surface 3b works effectively for preventing the above-mentioned faucet phenomenon and stabilizing the air pressure. As described above, the fluctuation of the air pressure in the pipe is reduced, the fluctuation is stabilized, and the drainage flow with reduced noise can be smoothly performed. That is, according to the above method, the upper deceleration chamber 7 defined on one side of the pipe circumference of the collecting pipe 3 via the partition plate 6, and subsequently, the collecting chamber 8 where the vertical water flow is focused, the deflected deceleration chamber 7 The branch pipe joints 10 to 10a and 10b provided on the opposite circumferential side of the above, the gradient peripheral surface 3b of the lowest swirl chamber 11, and the blade plate 12 inclined with respect to the pipe axis protruding from the gradient peripheral surface 3b By the upper standing tube 1
By reducing the drainage speed of the inflowing drainage and preventing mutual interference between vertical drainage and horizontal drainage due to one side end of the water flow, the increase in the air pressure in the pipe is prevented and its change is made smaller, and the reverse flow of the jump water is also performed. In addition to preventing the above-mentioned problems, and achieving a smooth mutual confluence in the collecting chamber 8, it is possible to ensure swirling and descending without stagnation in the swirling chamber 11, stabilization of air pressure due to continuous generation of air cores, quick discharge of water and reduction of noise. To get
It is possible with certainty. As a result, the problems that occur in the drainage pipes for performing continuous centralized drainage of each floor in multiple floors, particularly in a single-pipe type drainage pipe system, the large fluctuation in air pressure in the pipes and the large drainage noise are remarkably reduced.

In this case, as shown in FIG. 11, the collecting pipe 3 is formed into a single cylindrical large-diameter portion having a large diameter extending vertically, and a blade plate 12 is protruded from the large-diameter portion. The cylindrical swirl chamber 11 provided with the blade plate 12 is directly connected to the opening joint 5 via the tapered portion 3b '. For this reason, there is a possibility that the drainage provided with the swirling property may stagnate while maintaining the swirling state at the tapered portion 3b ', and the stagnation may occur. Since the blades 12 are provided on the peripheral surface 3b, the drainage provided with swirling properties flows down to the drainage drainpipe 2 below without stagnation.

FIG. 12 shows an example of a drainage test result using a collecting pipe 3 of the present invention in an 11-story middle-rise building and a one-pipe drainage pipe using a conventional collecting pipe. It is shown in the figure, and the drainage flow rate 33
In the case of continuous drainage at 0 liter / min, the fluctuation state of the air pressure in the pipe from 1F to 8F is shown.
Is a variation curve using the collecting pipe 3 of the present invention, Z,
Z 'indicates a variation curve of a conventional one using a collecting pipe. In the figure, the right side of the center line indicating each floor at the center is the + P value of the air fluctuation, and the left side is the -P value (both in mmAg).
Value) and the allowable limit ± 25 mmAg, it was found that the present invention is superior to the conventional one, and particularly remarkably superior toward the lower floors.

[0025]

According to the present invention, since the swirling force is applied to the drainage on the peripheral surface of the slope, the stagnation of the drainage flow does not occur on the peripheral surface of the slope, and the air core vertically penetrating along the pipe axis is formed. It is not blocked, and fluctuations in the air pressure in the pipe can be reliably suppressed. Then, both of the drainage water flowing down from the upper drainage stack and the drainage flow from the horizontal branch pipe flow into the enormous part, and the swirling force is applied on the gradient peripheral surface. Even when there is a large amount of water, the swirling state is maintained and the water flows down to the lower drainage risepipe, whereby fluctuations in the in-pipe air pressure can be reliably suppressed.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view of an embodiment of a collecting pipe used in a method of the present invention.

FIG. 2 is a front view of the same split type embodiment.

FIG. 3 is a vertical sectional front view of the same.

FIG. 4 is a view taken along the line IV-IV in FIG.

FIG. 5 is a view taken along line VV of FIG. 3;

6 is a view taken along line VI-VI in FIG.

7 is a view taken along the line VII-VII of FIG.

8 is a partial sectional view taken along line VIII-VIII of FIG. 3;

FIG. 9 is a plan view showing a flange of the lower collecting pipe.

FIG. 10 is a side sectional view of the same vertical connecting portion.

FIG. 11 is a side sectional view of an example of a conventional collecting pipe.

FIG. 12 is a graph showing experimental results of fluctuations in air pressure in a pipe between the method of the present invention and a conventional example.

[Explanation of symbols]

 1 Drainage vertical pipe 2 Drainage vertical pipe 3 Collecting pipe 3a Cylindrical part 3b Gradient peripheral surface 4 Opening joint part 5 Opening joint part 9 Side branch pipe 10 Branch pipe joint part 12 Blade plate

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[Procedure amendment]

[Submission date] August 9, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0022

[Correction method] Change

[Correction contents]

The gentle gradient of the gradient peripheral surface 3b works effectively for preventing the above-mentioned faucet phenomenon and stabilizing the air pressure. As described above, the fluctuation of the air pressure in the pipe is reduced, the fluctuation is stabilized, and the drainage flow with reduced noise can be smoothly performed. That is, according to the above method, the upper deceleration chamber 7 defined on one side of the pipe circumference of the collecting pipe 3 via the partition plate 6, and subsequently, the collecting chamber 8 where the vertical water flow is focused, the deflected deceleration chamber 7 The branch pipe joints 10 to 10a and 10b provided on the opposite circumferential side of the above, the gradient peripheral surface 3b of the lowest swirl chamber 11, and the blade plate 12 inclined with respect to the pipe axis protruding from the gradient peripheral surface 3b By the upper standing tube 1
Deceleration of the rate of drainage more inflow waste water, by preventing the interference of the vertical drainage and horizontal drainage according to one side piece preferred water flow more to reduce the change by preventing an increase in the pipe air pressure, together backflow of hydraulic jump In addition to ensuring smooth mutual confluence in the collecting chamber 8, the swiveling and descent without swirling in the swirling chamber 11, stabilization of air pressure by continuous generation of air cores, rapid drainage and noise reduction are ensured. To get
It is possible with certainty. As a result, the problems that occur in the drainage pipes for performing continuous centralized drainage of each floor in multiple floors, particularly in a single-pipe type drainage pipe system, the large fluctuation in air pressure in the pipes and the large drainage noise are remarkably reduced.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hironori Akasaki 7-1-22 Minamionkajima, Taisho-ku, Osaka City, Osaka Prefecture Kubota Iron Works Co., Ltd.

Claims (2)

[Claims] 1. The upper and lower ends are opening joints (4) (5) for joining drainage vertical pipes (1) (2), and the upper and lower portions of both opening joints (4) (5) are the above-mentioned For drainage, which is an enlarged portion (3a) having a diameter larger than that of the drainage pipes (1) and (2), and the lower end of the enlarged portion (3a) is an inclined wide peripheral surface (3b). In the method of flowing drainage in a collecting pipe, drainage from a lateral branch pipe (9) connected to a toilet or a source of miscellaneous drainage is caused to flow into the enlarged portion (3a), and the inflowed drainage and the drainage standing of the upper part. With respect to the drainage flowing down from the pipe (1) into the enlarged portion (3a), the inclined peripheral surface (3b)
A turning is provided at the lower joint opening joint (4).
From the drainage pipe (2) as a swirling flow along the inner surface of the drainage pipe. 2. The blade body (12) provided on the sloped peripheral surface (3b) is a means for imparting a turn on the sloped peripheral surface (3b). The method of flowing wastewater in the drainage collecting pipe described.