JPS62288794A - Collecting pipe for drainage - 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 3. Detailed Description of the Invention (Field of Industrial Application) The present invention is a system for discharging sewage and gray water into the same drainage pipe, which is used in medium and high Ni1 housing complexes. This invention relates to improvement of a drainage collecting pipe interposed in a drainage standpipe in a pipe-type drainage piping.

(Prior art) The drainage pipe configuration of single-pipe drainage piping is to connect and pass through a large number of drainage standpipes into a single drainage pipe from the upper floor to the lower floor, and drain sewage and miscellaneous water from the living areas on each floor. The water flows into the drainage standpipe through the horizontal branch pipe, and the portion of the horizontal branch pipe on each floor that receives drainage is a tubular body with a larger diameter than the drainage standpipe, and a horizontal wall on the circumferential side of the pipe. A drainage collecting pipe with protruding openings for connecting branch pipes is interposed in the drainage standpipe, but the problem with this -pipe type drainage piping is that when the wastewater flows down the drainage standpipe, The main points are the high fluctuation of air pressure inside the pipes and the drainage noise, which increases as you move from the upper floors to the lower floors.

Conventionally, means adopted to solve this problem include, for example, changing the shape of the large diameter pipe in the collecting pipe from a simple cylindrical shape to a diaphragm structure with at least the lower half tapered.
This includes installing a baffle plate at the connection with the side branch pipe, or installing a drainage flow control structure inside the collecting pipe. Regarding this point, the present applicant has also proposed a structure in which a spiral blade body is formed in a projecting manner on the inner circumferential surface of a large-diameter tubular gathering part, with the inner part gradually narrowing toward the starting end and the terminal end. (Refer to Special Publication No. 57-18015).

(Problems to be Solved by the Invention) The conventional methods were still insufficient in terms of preventing an increase in the air pressure in the pipe, reducing the drainage speed, reducing noise, etc.

The present invention aims to solve the above problems.

(Means for Solving the Problems) The present invention is characterized in that it solves the problems of the prior art. It consists of a collecting part that connects the parts and has a tubular shape with a larger diameter than the drainage standpipe, and the collecting part is provided with a partition plate to bias the drainage flow from the open joint at the upper end toward the collecting part. Further, from the inner surface of the gathering part, a vane plate is provided below the partition plate to swirl the drainage flow.

(Function) Since the drainage flow is shifted toward the collecting part side by the temporary partition, a ventilation layer is formed on the other side of the collecting part, and the flow rate is also reduced.

The wastewater flow is turned into a swirling flow by the vanes, and flows down while forming an air core that passes through the pipe vertically along the pipe axis.

Moreover, since the vane plate is located below the partition plate and protrudes from the inner surface of the gathering part, the drainage water is diverted by the partition plate and reliably guided to the vane plate.

(Example) The present invention will be described in detail below with reference to the illustrated embodiment. FIG. The drainage collecting pipe 3 interposed between the standpipes 2 has an open joint 4.5 at both upper and lower ends in the direction of the pipe axis X-X line, which is connected to the above-mentioned standpipe 1.2 by a known water-sealing connection structure. As well as being formed,
The pipe main body portion that connects both joints 4.5 is a collection of tubular bodies having a diameter larger than that of the standpipes 1 and 2. In this embodiment, the large diameter part from the upper part to the middle part following the open joint part 4 at the upper end of the collecting pipe 3 is a cylindrical part 3a, and the open joint part 5 from the middle part to the lower end.
As shown in the figure, the lower part is a tapered cylindrical part with a wide top and a narrow bottom, and has a gently sloped circumferential surface 3b inside. By providing a tongue-shaped partition plate 6 that hangs downward from the side toward the pipe axis A biased flow deceleration chamber 7 is created which causes the flow to drift toward one side of the inner peripheral surface of the cylindrical portion 3a and decelerates the flow. Coupled with the hanging length of the partition plate 6, this drift reduction chamber 7 occupies almost the entire upper part of the cylindrical portion 3a. A collection chamber 8 is formed in which the drainage flow from the first side and the drainage flow from the side branch pipe flowing in from the circumferential side of the cylindrical portion 3a merge. That is, in the opposite direction of the drainage flow from the standpipe 1 which is biased to one side of the collection chamber 8 through the biased flow deceleration chamber 7 by the partition plate 6, or in the collection chamber 8 as far away as possible. On the peripheral side, one or more branch pipe joints 10 are provided in the shape of a protruding opening to be connected to a horizontal branch pipe 9 connected to a toilet bowl or a gray water source, and in this example, one branch pipe joint part 10 is provided. Although shown, the cylindrical part 3
The length along the tube axis X-X line direction of a is increased, and the gathering room 8
Of course, it is possible to increase the length of the branch pipe joints 10 and provide two or more branch pipe joints 10 at different positions and directions on the upper and lower sides of the circumferential side of the collecting chamber 8. The lower part surrounded by the above-mentioned gently sloped peripheral surface 3b following the collection room 8 directs the drainage flow from the drainage standpipe 1 and the side branch pipe 9 that have been combined in the collection room 8 to the lower drainage standpipe. On the inner wall surface of this swirling chamber 11, that is, on the sloped circumferential surface 3b, there is a drainage standpipe indicated by the arrow (A). As shown by the arrow (c), the drainage stand flows in a spiral shape around the pipe axis x-X line, as shown by the arrow (c). A plurality of vanes 12 are provided to protrude so as to flow down the pipe 2.

That is, each of these blade plates 12 is a substantially trapezoidal plate body inclined with respect to the tube axis The medium gradually becomes medium as it reaches the end, and is evenly distributed and protrudes straight from the sloped peripheral surface 3b. The lateral branch pipe 9 and the branch pipe joint 10 are connected by a known water-tight connection structure.

In the first embodiment illustrated in FIG. 1, the collecting pipe 3 is
Although the collecting pipe 3 according to the present invention is shown as having an integral structure from the open joint part 4 at the upper end to the open joint part 5 at the lower end, it is also possible to have a structure in which the collecting pipe 3 is divided into upper and lower parts. This will be explained in a second embodiment illustrated in FIG. 2 and FIG. 10. In the overall view shown in Fig. 2.3 and the partial views shown in Figs. 4 to 9, the collecting pipe 3 has an upper collecting pipe 13 having an open joint 4 at the upper end, and an open joint 5 at the lower end. The lower collecting pipe 14 and the upper end of both pipes 13 and 14 are integrally connected by a flange joint 15. That is, as shown in detail in FIG. 10, a socket edge 14a for supporting the lower end of the upper collecting pipe 13 is formed at the upper end of the lower collecting pipe 14, and
A flange 14b is formed to protrude following the socket edge 14a, and the lower end of the upper collecting pipe 13 is inserted into the socket edge 14a, and a water sealing material 16 such as rubber is interposed between the outer periphery of the lower end and the protruding flange 14b. Then, the separate mounting flange 17, which is loosely fitted in advance to the upper collecting pipe 13, is brought into contact with the water sealing material 16, and both flanges 14b.

17 are integrated by fastening them using the fastening poles 8 and 8 naphts 19. Of course, this connection structure is merely an example. In the collecting pipe 3 formed by dividing the upper and lower collecting pipes 13 and 14, the open joint 4 at the upper end
The pipe main body portion that connects the opening joint 5 at the lower end is the vertical pipe 1.
, 2, and the upper collecting pipe 13
A partition plate 6 bent into a substantially S shape in the illustrated example is provided from the lower end of the opening joint 4, so that the drift deceleration chamber 7 similar to the embodiment in FIG. done,
At this time, corresponding to the shape of the partition plate 6, the outer peripheral wall extending approximately half the circumference of the upper collecting pipe 13 is made into a bent protruding portion 13a as shown in the figure, and the length of the partition plate 6 is also the same as that of the lower part of the upper collecting pipe 13. It is formed to extend for a long time. The collecting chamber 8 is formed across both pipes 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, and therefore the upper other side of the collecting chamber 8 A pre-collection chamber 8a, which is a space on the opposite side of the upper collecting pipe 13 from the drift deceleration chamber 7, that is, on the opposite peripheral side divided by the partition plate 6, is formed in a communicating manner. This preliminary gathering room 8a is also formed as a section 8a on the back side of the partition plate 6 in the embodiment shown in FIG. 1 described above, but in the embodiment shown in FIG. Combined with the shape of the plate 6, it is possible to form a clearer and larger space. In the embodiment shown in FIG. 2, a long collecting chamber 8 using the upper and lower joints of the upper and lower collecting pipes 13, 14, and furthermore, a preliminary collecting chamber 8a is clearly formed by the shape of the partition plate 6, as shown in the example in the figure. By using the two collecting chambers 8, 8a, a plurality of branch pipe joints 10a, 10b with steps above and below can be formed as shown in FIGS. 2, 3 and 4, 5, and 6. That is, in the preliminary collecting chamber 8a on the back side of the partition plate 6, in the example shown in the figure, three upper branch pipe joints 10a, each having a different inflow direction, are formed in a protruding shape using the circumferential side of the upper collecting pipe 13. In addition, in the collecting room 8, by utilizing the peripheral side of the lower collecting pipe 14, in the illustrated example, one branch pipe joint part 10b is also provided in a protruding shape as a lower joint part. Each of the branch pipe joints 10a and 10b is, for example, the upper branch pipe joint 10.
a is used as a connection part for a side branch pipe connected to a toilet bowl, and a lower branch pipe joint part 10b is used as a connection part for a side branch pipe connected to a kitchen or other source of gray water, or vice versa. ,
It is possible to receive inflows of sewage and gray water from multiple directions and of various types.

Continuing to the lower end of the collecting chamber 8 formed using the open upper end of the lower collecting pipe 14, a swirling chamber 11 surrounded by a gently sloped peripheral surface 3b is provided between it and the open joint 5 at the lower end. The sloped peripheral surface 3 in this swirling chamber 11 is formed over
As shown in FIGS. 3 and 5, on b, there are provided
A plurality of inclined blade plates 12 are placed in an attitude inclined with respect to the tube axis X--X, as in the embodiment shown in FIG.
They are provided in a protruding manner so as to be equally spaced in the circumferential direction. As shown in the figure, the medium of these blade plates I2 gradually decreases from the upper end to the lower end.

In the third illustrated example, the blade plate 12 is formed continuously from the sloped peripheral surface 3b to the opening joint 5, but it may be formed only on the sloped peripheral surface 3b, or from the gathering room 8 to the opening joint 5. From the sloped peripheral surface 3b or from the gathering room 8 to the sloped peripheral surface 3
It may be formed continuously through b to the opening joint portion 5.

Regarding the usage of the above-mentioned collecting pipe 3, when installing drainage piping by connecting and installing drainage standpipes vertically penetrating from the upper floor to the lower floor, similar to the conventional collecting pipe of this type, this is used for each floor. The collecting pipe 3 is intervened, and the sewage from the toilet bowl on that floor and gray water from the kitchen and other places flow into the collecting pipe 3 through each side branch pipe, and the waste water flowing down the drainage standpipe and the side water flow are made to intervene. The wastewater flows from the branch pipes are merged and collected in the collecting pipe 3 and are drained continuously to the lower floors.The top part of the drainage pipe system is open to the atmosphere, and the bottom part is guided to the drainage hall as appropriate. will be done.

According to the collecting pipe 3 of the above embodiment, the wastewater flowing down from the upper drainage standpipe 1 flows down from the opening joint 4 to the side of the unbalanced flow reduction chamber 7 guided by the partition plate 6. Coupled with the curved shape, the pipe circumference at the large diameter section 3a of the collecting pipe 3 -
It will be pushed to the side and flow down. That is, as a result, the vertical drainage from the standpipe 1 does not flow directly into the collecting pipe 3 over the entire area of its large diameter part, and the drainage speed is reduced by the bending drift caused by the partition plate 6, thereby preventing an increase in the air pressure inside the pipe. In addition, it also eliminates interference due to direct collision with the inflow water from the side branch pipe 9, and eliminates the increase in air pressure inside the pipe.
It is also possible to prevent backflow to the side branch pipe 9.
Therefore, smooth and quiet merging in the collecting room 8 with the lateral drainage water flowing in through the branch pipe joints 10 to 10a can be expected. Therefore, in the next collecting room 8, the waste water from the standpipe 1 and the inflow water from the side pipe 9 are combined in a focused manner, and the turbulence caused by mutual interference is small.
Fluctuations in the air pressure inside the pipe are reduced, a smooth merging effect with low drainage noise is obtained, and the combined drainage water flows down into the swirling chamber 11 at the lowest level. This swirling chamber 11 has a cross-sectional shape that becomes narrower toward the bottom by a gently sloped peripheral surface 3b, and a plurality of blade plates 12 that are inclined with respect to the tube axis direction are provided on the sloped peripheral surface 3b in the circumferential direction. Since the projecting parts are provided in sections, in the part where the combined drainage water tends to be most dense, the drainage flow is given swirling property through the guidance of each vane plate 12, and can swirl around the pipe axis and descend. As a result, the water flows down smoothly and quickly without causing a faucet phenomenon, and is accurately guided and discharged to the lower drainage standpipe 2 side via the opening joint 5. At this time, the rotation 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 stable state without changing the air pressure inside the pipe, and the drainage noise can be reduced. will be obtained.

In addition, since the blade plate 12 is provided protruding from the sloped peripheral surface 3b, in combination with the provision of an appropriate slope angle in the vertical direction, the drainage flow in the swirling chamber 11 is quickly prevented from stagnation or stagnation. Drainage discharge will be ensured. Incidentally, the gentle slope of the sloped peripheral surface 3b effectively works to prevent the faucet phenomenon described above and to stabilize the air pressure.

According to the collecting pipe 3, fluctuations in the air pressure inside the pipe are reduced and stabilized as described above, and drainage can be smoothly flowed down with reduced noise. In other words,
An upper drifting deceleration chamber 7 created on the circumferential side of the collecting pipe 3 via a partition plate 6, followed by a gathering chamber 8 where the vertical water flow is focused, and a branch provided on the opposite circumferential side of the drifting deceleration chamber 7. The pipe joints 10 to 10a, 10b, the sloped circumferential surface 3b in the lowest turning chamber 11, and the blade plate 12 that is inclined with respect to the tube axis and protrudes from the sloped circumferential surface 3b, are used to prevent the flow from the upper standpipe 1. By slowing down the drainage speed of inflowing drainage and preventing mutual interference between vertical drainage and horizontal drainage due to the water flow being close to one side edge, the increase in air pressure inside the pipe is prevented and its change is made smaller, and the backflow of water is also prevented. Furthermore, it is possible to obtain smooth mutual merging in the gathering chamber 8, as well as to ensure smooth lowering of the swirl in the swirling chamber 11, stabilization of air pressure by continuous generation of air cores, speedy drainage, and reduction in noise. This makes it possible to reliably and easily solve the problems that occur in drainage piping that performs continuous and concentrated drainage from each floor of multiple floors, especially in pipe-type drainage piping systems, such as large fluctuations in air pressure inside the pipes and drainage noise. This significantly reduces the size of In addition, in FIG. 11, no partition plate is provided, and the shape of the collecting pipe 3 is formed as a single cylindrical large-diameter portion with a large diameter extending upward and downward, and only the vane plate I2 is provided protruding from this large-diameter portion. However, the cylindrical swirling chamber 11 provided with the vane plate 12 represents a conventional collecting pipe which is directly connected to the open joint 5 via the tapered portion 3b'. in this case,
There is a risk that the waste water that has been given swirling properties will stagnate while maintaining its swirling state in the tapered portion 3b', causing stagnation.
1, since the blade body 12 is provided on the sloped peripheral surface 3b, the waste water given swirling properties flows down into the drain pipe 2 below without stagnation. In addition, Fig. 12 shows an example of the results of a drainage experiment in an 11-story medium-rise building using the above-mentioned embodiment collecting pipe 3 and in a single-pipe drainage pipe using a conventional collecting pipe. The I
Indicates the fluctuation status of the air pressure in the pipe from F to 8F, Y,
The curve indicated by Y' is a variation curve using the collecting pipe 3 of the present invention, and 2.2'' is a variation curve using a conventional collecting pipe.

In the figure, the right side of the center line indicating each floor in the center is the +P value of air fluctuation, and the left side is the -P value (both mmAg values).Assuming a tolerance of ±25 mmAg, this example is different from the conventional one. It was found to be superior to the standard, especially as you reach the lower floors.

(Effects of the Invention) According to the present invention, the drainage velocity is reduced by both the partition plate and the vane plate, and flows down while forming a ventilation layer passing through the upper and lower sides. Since the vane plate is located below the plate, the drainage water is reliably guided by the vane plate and becomes a swirling flow, so it is better than the conventional method in order to prevent the increase in air pressure in the pipe, reduce the drainage speed, and reduce noise. It produces better effects.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional front view of an embodiment of the collecting pipe of the present invention, Fig. 2 is a front view of the same split type embodiment, Fig. 3 is a longitudinal sectional front view of the same, and Fig. 4 is a longitudinal sectional front view of the embodiment of the collecting pipe according to the present invention.
The figure is a view taken along the line IV-IV in Figure 3, and Figure 5 is a view taken along the line V-V in the same figure.
6 is a partial sectional view taken along the Vl-VI line, FIG. 7 is a partial cross-sectional view taken along the ■-■ line, and FIG. 9 is a plan view showing the flange of the lower collecting pipe. FIG. 10 is a side cross-sectional view of the upper and lower joints, FIG. 11 is a side cross-sectional view of an example of a conventional collecting pipe, and FIG. 12 is a graph of experimental results of air pressure fluctuations in the pipes of the present invention and the conventional example. . 1.2--Drainage stand pipe, 3-Collecting pipe, 4,5-opening joint, 6--partition plate, 12-vane board.

Claims (1)

[Claims] (1) Consists of an opening joint for connecting a drainage standpipe at both ends in the pipe axis direction, and a tubular collecting part that connects both opening joints and has a larger diameter than the drainage standpipe, and the collecting part includes: A partition plate is provided to direct the drainage flow from the opening joint at the upper end to one side of the collecting part, and furthermore, from the inner surface of the collecting part,
A drainage collecting pipe characterized in that a vane plate is protruded below the partition plate for swirling the drainage flow.