JPS623359B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pipe joint with a tongue piece for preventing drainage collision, and more specifically, it is provided with an upper drainage standpipe connection port (hereinafter referred to as an upper standpipe connection port) at the top, and a pipe joint with a tongue piece for preventing drainage collision. This invention relates to a pipe joint with a tongue piece for preventing drainage collision, which is equipped with a branch pipe connection port on the side.

Conventionally, in a drainage pipe joint (hereinafter simply referred to as a pipe joint) that has an upper standpipe connection port on the top and a side branch pipe connection port on the side, the drain flowing down from the upper standpipe connection port (hereinafter referred to as (hereinafter referred to as vertical pipe drainage) may block the side branch pipe connection port, or there may be interference between vertical pipe drainage and wastewater flowing into the pipe joint from the side branch pipe connection port (hereinafter referred to as side branch pipe drainage). A so-called cross flow occurs, causing part of the wastewater and detergent foam to flow back into the side branch pipe, and the ventilation between the inside of the pipe joint and the side branch pipe is obstructed, and as a result, the trap connected to the side branch pipe There were drawbacks such as the water seal being broken and noise being generated within the pipes.

In view of the above-mentioned drawbacks of the conventional pipe joints, the present invention prevents the blockage of the side branch pipe connection port due to the vertical pipe drainage and the cross flow between the vertical pipe drainage and the side branch pipe drainage, and prevents drainage, detergent foam, etc. It allows wastewater to flow down smoothly while preventing backflow to the side branch pipe, maintains ventilation between the pipe joint and the side branch pipe, and seals the drain trap connected to the side branch pipe. It is an object of the present invention to provide a pipe joint with a tongue piece for preventing drainage collision, which can protect the pipe and prevent noise from occurring inside the pipe.

The present invention provides a tongue piece that is capable of causing the side branch pipe drainage to collide with the inner opening of the side branch pipe connection port, and is provided in a shape that hangs down from the inner wall of the pipe joint, and does not face the side branch pipe connection port. It is characterized in that a space is provided in the portion by passing the side edge of the tongue piece.

Next, the first embodiment of the present invention will be explained based on FIGS. 1 and 2. In the figures, S is a slab on an arbitrary floor of the building, and H is an adjacent drain pipe installed on that floor. The slab S to lead to the lower floor
This is a through hole installed in the.

Reference numeral 1 designates the main body (hereinafter simply referred to as the main body) of the funnel-shaped pipe joint of this embodiment, which is provided with an almost straight upper vertical pipe connection port 2 at the upper part, and below which is the inner diameter of the main body 1. It is provided with an expanded portion 3 formed by expanding and expanding the tube into a large diameter shape, and further provided with side branch pipe connection ports 4 and 5 on both sides of the expanded portion 3, respectively.
Further, the main body 1 is provided with a tapered portion 6 that tapers downward at the lower end of the expansion portion 3 described above, and is provided with a straight lower vertical pipe connection port 7 at the lower portion thereof.

The main body 1 also has a horizontal branch pipe connection port 4 on the left side.
A tongue piece 8L having an arc-shaped horizontal cross section is integrally formed in a hanging shape at the lower end of the vertical pipe connection port 2 at a position facing the inner opening of the vertical pipe connection port 2 . However, the tongue piece 8L
has a size that allows drainage flowing into the main body 1 from the side branch pipe connection port 4 to collide with each other, and the lower end edge of the tongue piece 8L and the inner circumferential surface of the main body 1, that is, in this embodiment, a tapered portion A flow path W having a cross-sectional area larger than the effective flow cross-sectional area of the side branch pipe connection port 4 is formed between the side branch pipe connection port 6 and the inner circumferential surface of the side branch pipe connection port 6 . Further, in this embodiment, the right side branch pipe connection port 5 is also provided with a tongue piece 8R that is bilaterally symmetrical to the tongue piece 8L.

Therefore, in this embodiment, the portion of the lower end periphery of the upper vertical pipe connection port between the tongues 8L and 8R, that is, the portion that does not face the side branch pipe connection ports 4 and 5 is the tongue partition. 9, a space K1 is formed by the vertical side edges 8LA, 8RA of the tongues 8L, 8R and the tongue partition surface 9, and the space K1 is formed between the inside of the main body and the lateral branch pipe as described later. It promotes ventilation.

In this embodiment, the upper standpipe 2A is inserted into the inner peripheral surface of the upper standpipe connection port 2 by an insertion method, and the packing 1
Watertightness is maintained between the upper vertical pipe connection port 2 and the upper vertical pipe 2A by a packing cap 11 shaped like a cap nut.

The packing cap 11 is fixed to the upper vertical pipe 2A via a set screw 12, and is also fixed to the upper vertical pipe connection port 2 via a set screw 13.

Further, the horizontal branch pipe 4A is inserted into the horizontal branch pipe connection port 4 of the main body 1 by an insertion method, and watertightness is maintained via an O-ring 14 and a cap nut 15. A lateral branch pipe 5A is inserted into the connection port 5.

Further, a lower standpipe 7A is connected to the lower standpipe connection port 7 of the main body 1 through a packing 16, a presser flange 17, and a presser bolt 18 in a watertight manner.

Next, to explain the operation of this embodiment, the vertical pipe wastewater flowing down inside the upper vertical pipe 2A mainly flows down in the form of a water film along the inner peripheral surface of the upper vertical pipe 2A. In the space part K1, the inner peripheral surface of the tapered part 6 extends from the lower end edge of the upper vertical pipe 2A to the tongue partition surface 9, and expands somewhat in the radial direction under the influence of the positive pressure inside the pipe due to drainage. Freely flows down in irregular droplets towards the target. On the other hand, in the area where the tongue pieces 8L and 8R are located, the tongue pieces 8L and 8R are present.
Similarly, it flows down from the lower edge of R.

In other words, the level at which the vertical pipe drainage starts to form splashes is between the tongue piece partition surface 9 and the tongue pieces 8L, 8 of the space K1.
By dividing it into the R lower end edge, ventilation in the space K1 is facilitated. Therefore, the upper vertical pipe 2A
The drainage water that has flowed further down is dispersed between the lower edges of the tongues 8L and 8R and the tongue partition surface 9 and falls freely in the form of irregular droplets, resulting in blockage of the side branch pipe connection port due to the vertical pipe drainage, or Backflow of wastewater into branch pipes is prevented.

On the other hand, the horizontal branch pipe drainage flowing into the main body 1 from the horizontal branch pipe 4A collides with the outer circumferential surface of the tongue piece 8L that hangs down facing the inner opening of the horizontal branch pipe connection port 4, and then flows into the taper portion 6. It freely falls in irregular droplets toward the inner peripheral surface.

Further, the wastewater flowing into the main body 1 from the side branch pipe 5A also falls freely after colliding with the tongue piece 8R in the same manner as described above.

Therefore, in this embodiment, even if the vertical pipe water and the side branch pipe drainage flow into the main body 1 at the same time, the blockage of the side branch pipe connection port in the pipe joint and the cross flow are prevented, so that the drainage and the side branch pipe drainage are prevented. Backflow of detergent foam, etc. to the side branch pipe is prevented.

In addition, on the side of this embodiment, tongue pieces 8L and 8R
Since tongue piece partition surfaces 9, 9 are formed at two places between
The tongue pieces 8L, 8R and the two tongue piece partitions 9, 9 allow the two tongue piece partitions 9, 9 to freely fall in four locations, thereby maintaining ventilation in the vertical pipe drainage, and the side branch pipe drainage also flowing through the tongue. Since ventilation is maintained by collision with the pieces 8L and 8R, ventilation between the main body and the side branch pipe is maintained.
Therefore, the water seals of the drainage traps connected to the side pipes 4A, 5A are protected.

In the first embodiment described above, since the expanding portion 3 is provided below the upper vertical pipe connection port 2, ventilation of the vertical pipe drainage and the side branch pipe drainage can be promoted.

Next, a second embodiment of the present invention will be explained with reference to FIGS. 3 to 5. Since this second embodiment also has essentially the same technology as the first embodiment, there are mainly differences. I will explain about it.

In the figure, reference numeral 21 denotes a pipe joint body, which is provided with an upper vertical pipe connection port 22 at the upper end of its axis, and an expanded portion 23 below it. A side branch pipe connection port 24A is provided on the upper side, a side branch pipe connection port 24B is provided on the lower side, and a side branch pipe connection port 25 is provided on the left side. However, the lateral branch pipe connection port 25 is bent into a substantially L-shape, and its inner end surface opens to the left side surface of the expanded portion 23 in the drawing.

Further, the main body 21 is provided with a tapered portion 26 below the lower end edge of the expanding portion 23, and further provided with a straight lower vertical pipe connection port 27 below the tapered portion 26.

A tongue piece 28 is provided on the lower end circumference of the upper vertical pipe connection port 22 of the main body 21 in a hanging manner so as to face the inner opening of each of the lateral branch pipe connection ports 24A, 24B, and 25. However, in this embodiment, since the three side branch pipe connection ports are adjacent to each other, each tongue piece is continuous, and the tongue pieces 28 are as follows.
As shown in Figures 3 and 5, the side branch pipe connection port 2
4A, 24B, and 25 is the tongue piece partition surface 29 along the lower edge of the upper vertical pipe connection port 22, and the vertical side edge 28A of the tongue piece 28 and the tongue piece partition surface 2
It is formed into an integral C-shape with a space K2 formed by 9 and 9.

Therefore, the vertical pipe drainage flowing down from the upper vertical pipe connection port 22 is connected to the lower edge of the C-shaped tongue piece 28 and the tongue piece partition surface 2.
It disperses into 9 parts and falls freely. Further, since each side branch pipe drainage falls after colliding with the tongue piece 28 as in the first embodiment, the same operation and effect as in the first embodiment can be obtained.

Next, a third embodiment of the present invention will be described with reference to FIGS. 6 to 8, and this third embodiment can also be called a modification of the first embodiment. That is, an upper vertical pipe connection port 32 is provided at the top of the main body 31, an expanded portion 33 is provided below the upper vertical pipe connection port 32, and a horizontal branch pipe connection is provided on three sides of the expanded portion 33, that is, on the left side as viewed in FIG. It has a mouth 34A, a mouth 34B on its right side, and a mouth 35 on its lower side.

Further, the main body 31 is provided with a tapered portion 36 below the lower end edge of the expanding portion 33, and further provided with a substantially straight lower vertical pipe connection port 37 below the tapered portion 36.

Thus, a tongue piece 38 is provided in a hanging shape on the lower end periphery of the upper vertical pipe connection port 32 of the main body 31, facing the inner opening of each of the side branch pipe connection ports 34A, 34B, and 35. However, in this embodiment, since the three side branch pipe connection ports are adjacent to each other, each tongue piece is continuous, and as shown in FIG. 34A, 34
The part that does not face B and 35 is the upper vertical pipe connection port 3.
2 is a tongue piece partition surface 39 along the lower edge of the tongue piece 3.
It is formed into an integral C-shape in which a space K3 is formed by the vertical side edges 38A of 8 and the tongue partition surface 39.

Therefore, since the waste water flowing down from the side branch pipe connection ports 34A and 34B collides with the tongue piece 38 and then falls, the same operation and effect as in the second embodiment can be obtained.

Although detailed explanation is omitted, the upper vertical pipe connection port 32, the side branch pipe connection ports 34A, 34B, and 3
5 and the lower vertical pipe connection port 37, respective drain pipes are inserted by insertion as shown in the figure.

Next, another embodiment of the tongue pieces will be described. The tongue pieces 48L and 48R shown in FIG. The tongue pieces 58L and 58R shown in FIG. 10 are provided to protrude from the inner wall surface of the main body 51 of the pipe joint.

In addition, K4, K5 in Figures 9 and 10
is the opening.

As explained above, the tongue-fitted pipe joint according to the present invention is a drain pipe joint that is provided with an upper drain pipe connection port at the top and a side branch pipe connection port on the side. An expanded portion is provided below the connection port and has an inner diameter larger than the inner diameter of the upper drain pipe connection port, and an inner opening of the side branch pipe connection port is located on the side of the expanded portion. A tongue piece is provided hanging down from the inner wall of the drain pipe joint so as to be almost opposite to the side branch pipe connection port.
Since a space is provided through the side edge of the tongue piece, the blockage of the side branch pipe connection port due to vertical pipe drainage and the cross flow between the vertical pipe drainage and the horizontal branch pipe drainage are prevented, and drainage and detergent are prevented. The drainage water can be allowed to flow down smoothly while preventing bubbles and the like from flowing back into the side branch pipe, thereby achieving the above-mentioned objectives. That is, according to the present invention, it is possible to maintain the ventilation between the inside of the pipe joint and the inside of the side branch pipe, protect the water seal of the drain trap connected to the side branch pipe, and prevent the generation of noise inside the pipe. The effect is so great that it can be said to be indispensable as a drainage pipe member for buildings.

[Brief explanation of the drawing]

FIG. 1 is a front cross-sectional view at the center of the first embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line -- in FIG. , Figure 4 is its plan view, and Figure 5 is the same as Figure 3.
A line sectional view, FIG. 6 is a central sectional front view of the third embodiment of the present invention, FIG. 7 is a plan view thereof, and FIG.
- line sectional views, Figures 9 and 10 are as follows:
FIG. 7 is a cross-sectional plan view showing other examples of the tongue pieces. 1, 21, 31, 41, 51...Main body, 2, 2
2, 32...Upper vertical pipe connection port, 4, 5, 24A,
24B, 25, 34A, 34B, 35... Side branch pipe connection port, 8L, 8R, 28, 38, 48L, 48
R, 58L, 58R... tongue piece.

Claims (1)

[Claims] 1 A drain pipe joint that is equipped with an upper drainage standpipe connection port on the top and a side branch pipe connection port on the side, the inner diameter of which is connected to the upper drainage standpipe below the upper drainage standpipe connection port. It has an enlarged part formed to be larger than the inner diameter of the mouth, and a tongue that hangs down from the inner wall of the drain pipe joint so as to be substantially opposite to the inner opening of the side branch pipe connection port on the side of the enlarged part. 1. A pipe joint with a tongue piece for preventing drainage collision, characterized in that a tongue piece is provided, and a space is provided in a portion not facing a side branch pipe connection port by interposing a side edge of the tongue piece.