JP4757890B2 - Drainage collecting pipe - Google Patents

Description

  The present invention relates to a drainage collecting pipe.

As shown in FIGS. 7 and 8, the drainage pipe system adopted in multi-storey buildings such as apartment houses is a drainage collection system corresponding to each floor with respect to a standing main pipe 100 that is piped through each floor in the vertical direction. A pipe 101 is provided, and the horizontal branch pipes 102 and 103 for each floor are connected via these drainage collecting pipes 101 (Patent Document 1).
In this type of drainage collecting pipe 101, a plurality of lateral pipe joint parts 106 and 107 are provided on the side part of the pipe main body 105 serving as a nucleus corresponding to the side branch pipes 102 and 103.

In the illustrated drainage collecting pipe 101, the pipe joint portions 106 and 107 protrude in the plane crossing direction so as to have a flat L shape.
When the toilet drainage is drained by using such an L-shaped drainage collecting pipe 101, the side branch pipe 102 connected to one of the pipe joint portions (currently referred to as 106) is connected to the toilet 108. The horizontal branch pipe 103 connected to the other pipe joint portion (therefore the reference numeral 107) is connected to a drainage device 109 such as a bath.
Japanese Patent Laid-Open No. 9-310389

  In the above-described flat L-shaped type drainage collecting pipe 101, when using this to drain a vigorous drainage flow like toilet drainage, the pipe joint portion 106 is connected from the side branch pipe 102 on the toilet bowl 108 side. When the toilet drainage flows into the pipe main body 105 through the pipe main body 105, the toilet drainage hits the inner peripheral surface facing in the pipe main body 105, and the other pipe joint portion while the reflected flow surpasses the inner peripheral surface. 107 flows into the side branch pipe 103 and thus backflows.

Such a problem is not limited to toilet drainage but may occur when draining a vigorous drainage flow.
Conventionally, it has been considered that a hanging wall is provided in the tube main body 105 to solve this type of problem (see Japanese Patent Application Laid-Open No. 8-85889). However, the hanging wall takes into account the passage of the test ball. However, there is a problem that the structure is expensive.

  The present invention has been made in view of the above circumstances, and when draining a vigorous drainage flow such as toilet drainage, the drainage can prevent the drainage from flowing back to other side branch pipes. The purpose is to provide a collecting tube.

In order to achieve the above object, the present invention takes the following technical means.
That is, the drainage collecting pipe according to the present invention includes a pipe main body interposed in the standing main pipe, a pipe joint portion projecting laterally at the side surface of the pipe main body to connect the lateral branch pipe, and the pipe A plurality of backflow prevention ribs extending from the inner peripheral surface of the main body toward the center of the pipe main body and extending in the pipe axis direction of the pipe main body, and the pipe main body has an opening of the pipe joint portion inside thereof An inner peripheral surface where the pipe joint portion does not open is formed on the opposite side, and the backflow prevention ribs are located on both sides of the opening and on both sides of the inner surface facing the opening, respectively. Are provided at symmetrical positions across the tube axis of the tube body, and each is formed from at least the same height position as the upper end of the opening to the same height position as the lower end of the opening .

The drainage collecting pipe includes a plurality of the pipe joint portions, and the plurality of pipe joint portions are configured such that the tube axes of the plurality of pipe joint portions form an angle of 90 degrees with each other when viewed in the tube axis direction. Is provided .

  The drainage collecting pipe according to the present invention can prevent the drainage from flowing back to other side branch pipes when draining a vigorous drainage flow such as toilet drainage.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIGS. 3 and 4 show a first embodiment of a drainage collecting pipe 1 according to the present invention. FIGS. 1 and 2 show a multilayer structure such as a housing complex using the drainage collecting pipe 1 of the first embodiment. It shows the situation where the drainage pipe system was installed in the floor building.
The drainage collecting pipe 1 is interposed at a portion corresponding to each floor with respect to a standing main pipe 100 that is built through each floor of a multi-story building in the vertical direction.

Therefore, an upper joint portion 3 and a lower joint portion 4 for connecting to the vertical pipe for the standing main pipe 100 are provided at the upper end portion and the lower end portion of the pipe main body 2 forming the nucleus in the drainage collecting pipe 1. ing.
In addition, although the upper joint part 3 of the example is a receptacle (socket or mechanical) type and the lower joint part 4 is an insertion (straight pipe) type, these may be other types such as a flange joint type.

A plurality (two in the illustrated example) of pipe joint portions 6 and 7 are provided on the side surface portion of the pipe body 2.
The pipe joint portions 6 and 7 in the figure are all of the receptacle (socket or mechanical) type, but may be other types such as a flange joint type and an inlet (straight pipe) type.
These pipe joint portions 6 and 7 are lateral and protrude from the pipe body 2 in the plane crossing direction so as to have a planar L shape. The side branch pipes 102 and 103 can be connected to the pipe joint portions 6 and 7, and one of the side branch pipes 102 is connected to the toilet 108.

The other side branch pipe 103 is connected to a drainage device 109 such as a bath.
A plurality of backflow prevention ribs 10 to 13 are provided inside the tube body 2.
Each of the backflow prevention ribs 10 to 13 protrudes from the inner peripheral surface of the tube body 2 toward the tube center direction (not necessarily an accurate tube center). The backflow prevention ribs 10 to 13 all extend along the tube axis direction.

The positions where the backflow prevention ribs 10 to 13 are provided in the tube axis direction of the tube body 2 are set so as to be the same positions as the tube joint portions 6 and 7.
Further, the positioning of the backflow prevention ribs 10 to 13 in the circumferential direction of the pipe body 2 is such that they open to the inside of the pipe body 2 with respect to the pipe joint portions 6 and 7 adjacent to each other in a plane crossing manner. It includes an intermediate position of the portion (the opening of one pipe joint portion 6 is 15 and the opening of the other pipe joint portion 7 is 16 as shown in FIG. 3).

  For convenience of explanation, the first backflow prevention rib 10 and the other backflow prevention ribs 11, 12, and 13 are referred to in ascending order in the clockwise direction. The prevention rib 11 is positioned at a symmetrical position sandwiching the opening 15 of the pipe joint portion 6 from the first backflow prevention rib 10. Therefore, the backflow prevention ribs 10 and 11 are provided on both sides of the opening 15.

Further, the fourth backflow prevention rib 13 is positioned at a symmetrical position sandwiching the opening 16 of the pipe joint portion 7 from the first backflow prevention rib 10. Therefore, the backflow prevention ribs 10 and 13 are provided on both sides of the opening 16.
The third backflow prevention rib 12 is positioned at a symmetrical position with respect to the first backflow prevention rib 10 with the tube center of the tube body 2 interposed therebetween.

Therefore, as is clear from these descriptions, the backflow prevention ribs 10 to 13 are provided so as to divide the inner peripheral surface of the pipe body 2 into four equal parts.
In the pipe body 2 of the first embodiment, the swirl vanes 17 are provided for allowing the drainage to flow down to the standing main pipe 100 efficiently.
As shown in FIGS. 1 and 2, in the drainage collecting pipe 1 having such a configuration, the toilet drainage vigorously flows from the side branch pipe 102 connected to the toilet 108 into the pipe body 2 through one pipe joint portion 6. Even if it flows in, this drainage flow hits the inner peripheral surface 2a facing in the pipe body 2 and then the reflected flow immediately hits the third backflow prevention rib 12 and the fourth backflow prevention rib 13. .

In addition, even if there is a reflected flow over the third and fourth backflow prevention ribs 12 and 13, they will collide with the first backflow prevention rib 10 and the second backflow prevention rib 11.
Therefore, the phenomenon that the reflected flow of the drainage flow propagates along the inner peripheral surface of the pipe body 2 is reliably suppressed, and as a result, the drainage flow is prevented from flowing backward from the other pipe joint portion 7 to the side branch pipe 103. It is what is done.

  As described above, since the backflow prevention ribs 10 to 13 are arranged in four equal positions with respect to the inner peripheral surface of the pipe body 2, there is momentum from the side branch pipe 103 side connected to the pipe joint portion 7. Even when a drainage flow flows in (including, of course, the case where the horizontal branch pipe 103 is connected to the toilet 108), the phenomenon that the drainage flow that has flowed into the pipe main body 2 is transmitted along the inner peripheral surface of the pipe main body 2 is ensured. Will be suppressed. That is, as the drainage collecting pipe 1, its piping (use mode) is not limited.

FIG. 5 shows a second embodiment of the drainage collecting pipe 1 according to the present invention.
The difference between the drainage collecting pipe 1 of the second embodiment and the first embodiment is that the pipe body 2 is formed in a vertically long shape and the backflow prevention ribs 10 to 13 are also formed in a vertically long shape. is there.
The vertical length of the pipe body 2 is assumed to have been performed on the lower side of the pipe joint parts 6, 7, but may be performed on the upper side of the pipe joint parts 6, 7.

Other configurations, structures, operational effects, and the like are substantially the same as in the case of the first embodiment, and a detailed description thereof is omitted here.
FIG. 6 shows a third embodiment of the drainage collecting pipe 1 according to the present invention.
Similarly to the case of the second embodiment, the drainage collecting pipe 1 of the third embodiment is formed by a vertically long pipe main body 2. Is an arrangement with different heights, and another pipe joint portion 20 is newly provided.

Along with this, apart from the backflow prevention ribs 10A to 13A provided at the same position as the pipe joint portions 6 and 7 in the pipe axis direction of the pipe body 2, the backflow prevention ribs 10B to 10B at the same position as the pipe joint portion 20 are provided. 13B is provided.
In the example shown in the drawing, the upper backflow prevention ribs 10A to 13A and the lower backflow prevention ribs 10B to 13B are separated in the vertical direction, but they may be continuous in series.

Since other configurations, structures, operational effects, and the like are substantially the same as those in the first embodiment and the second embodiment, detailed description thereof is omitted here.
By the way, this invention is not limited to each above-mentioned embodiment, It can change suitably according to embodiment.
For example, the forming material of the drainage collecting pipe 1, the number and arrangement of the pipe joint portions 6, 7, and 20, the pipe diameter size and the like are not limited at all. Accordingly, in addition to the two sides of the plane L type, it is also possible to have three sides such as a plane T type and a Y type, and four sides of a plane cross shape.

Further, the drainage collecting pipe 1 is not limited to be used in a multi-storey building.
The length of the backflow prevention ribs 10 to 13 in the tube axis direction, the protruding length toward the tube center, and the like are not limited.

  INDUSTRIAL APPLICABILITY The present invention can be used for a drainage collecting pipe of a drainage pipe system employed in a multi-storey building such as an apartment house.

FIG. 1 is a plan view showing a pipe form using the first form of the drainage collecting pipe. FIG. 2 is a side view corresponding to FIG. FIG. 3 is a partially crushed plan view showing a first form of the drainage collecting pipe. FIG. 4 is a partially crushed side view showing a first form of the drainage collecting pipe. FIG. 5 is a partially broken side view showing a second form of the drainage collecting pipe. FIG. 6 is a partially crushed side view showing a third form of the drainage collecting pipe. FIG. 7 is a plan view showing a piping configuration using a conventional drainage collecting pipe. FIG. 8 is a side view corresponding to FIG.

DESCRIPTION OF SYMBOLS 1 Drainage collecting pipe 2 Pipe main body 2a Inner peripheral surface 6 Pipe joint part 7 Pipe joint part 10-13 Backflow prevention ribs 15 and 16 Opening part 100 Standing main pipe 102 Side branch pipe

Claims (2)

A pipe body interposed in the standing main pipe,
A pipe joint that projects laterally at the side of the pipe body to connect a side branch pipe;
A plurality of backflow prevention ribs extending from the inner peripheral surface of the tube body toward the center of the tube body and extending in the tube axis direction of the tube body;
The tube body is
An inner peripheral surface where the pipe joint portion does not open is formed on the side facing the opening of the pipe joint portion inside thereof,
The backflow prevention rib is
Positioned on both sides of the opening, and symmetrical positions across the tube axis of the tube main body with respect to the both sides of the inner peripheral surface facing the opening, respectively , and at least each of the openings A drainage collecting pipe, characterized in that the drainage collecting pipe is formed from the same height position as the upper end of the opening to the same height position as the lower end of the opening . A plurality of the pipe joint portions;
The drainage collecting pipe according to claim 1, wherein the plurality of pipe joint portions are provided such that the tube shafts of the plurality of pipe joint portions form an angle of 90 degrees with each other when viewed in the tube axis direction.

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