JPH0517296U - Pipe fitting - Google Patents

Abstract

(57) [Summary] [Structure] Vertical pipe connection port 1 connected to vertical pipe 4 and horizontal pipe 5
Side pipe connection port 2 connected to the
Consists of. Almost the entire range of the inner surface 31 of the curved pipe portion 3 in which the vertical pipe connection port 1 is projected in the vertical direction is 40 ° with respect to the horizontal direction.
The inclined surface is inclined as described above. [Effect] The dirt 6 falling from the vertical pipe 4 drops onto the inner surface 31 of the curved pipe portion 3. This inner surface 31 is 4 with respect to the horizontal direction.
Since it is an inclined surface inclined by 0 ° or more, the filth 6 has an inner surface 31
No big noise is generated when hitting. Therefore, the person living near the joint A does not feel uncomfortable and is a valuable idea.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a pipe joint. Specifically, from the vertical pipe connection port connected to the vertical pipe laid in the vertical direction, the horizontal pipe connection port connected to the horizontal pipe laid in the horizontal direction, and the curved pipe section between them. Naruto pipe fittings.

[0002]

[Prior Art]

 Conventionally, a pipe joint for connecting a vertical pipe laid in the vertical direction and a horizontal pipe laid in the horizontal direction has a vertical pipe connection port 101 connected to the vertical pipe and a horizontal pipe as shown in FIG. It is composed of a horizontal pipe connection port 102 to be connected and a curved pipe portion 103 having a substantially uniform arcuate inner surface between them.

Therefore, the inner surface of the bent pipe portion obtained by projecting the vertical pipe connection port portion in the vertical direction, and the portion close to the horizontal pipe connection port (portion X in FIG. 4) is 40 in the horizontal direction. The slope is much smaller than °.

[0004]

[Problems to be solved by the device]

 However, when sewage accompanied by filth is sewn into the drainage pipe using such a conventional pipe joint, the filth falling in the vertical pipe hits the inner surface of the curved pipe portion of the joint and makes a loud noise.

Particularly, in an apartment house, there are many dwelling units on the second floor and above, and when drainage of sewage with filth is discharged from the dwelling units on the second floor and above, the filth falls freely in the vertical pipe faster than the sewage, and the slab below the first floor It collides with the inner surface of the curved pipe portion of the pipe joint fixed by a reinforcing bar or the like, and a noise having a low frequency sound of about 125 Hz to 250 Hz as a peak is generated. This noise is often generated in apartments because there are many dwelling units. Therefore, it is unbearable for the people on the first floor living near the pipe joint connecting the vertical pipe and the horizontal pipe. Especially when the background noise during the night is small, this sound is often heard, which is a problem.

Then, the present inventor has conducted various studies to solve this noise, and as a result, has found the following. That is, the inner surface of the curved pipe portion 103 of the conventional pipe joint has a smooth arc shape as shown in FIG. 4, and the filth dropped from the vertical pipe connection port is directed in the vertical direction of the vertical pipe connection port. It was found that the volume of the generated sound was completely different, because the inclination varied depending on the collision with the surface projected onto the surface and the collision position of the arcuate inner surface. Immediately, the inner surface close to the horizontal pipe has a small angle with respect to the horizontal plane, and therefore the noise colliding with this part is large, and the inner surface close to the vertical pipe is close to the vertical surface, so the sound colliding with this part is relatively small. There was found.

Therefore, the present invention has been made based on the above-mentioned research results, and an object thereof is to provide a pipe joint in which the sound of falling filth is comparatively small.

[0008]

[Means for Solving the Problems]

 The present invention has been made to solve the above problems and to achieve the above object, and has a vertical pipe connection port connected to a vertical pipe laid vertically and a horizontal pipe laid horizontally. In a pipe joint consisting of a horizontal pipe connection port to be connected and a curved pipe section between them, almost the entire area of the inner surface of the curved pipe section, in which the vertical pipe connection port is projected in the vertical direction, faces the horizontal direction. Is an inclined surface inclined by 40 ° or more.

Although any material may be used for the pipe joint in the present invention, conventionally used metal such as cast iron, synthetic resin such as vinyl chloride resin, or composite material thereof is preferable.

Further, the structures of the vertical pipe connection port and the horizontal pipe connection port may be the same as conventional ones. In the present invention, the substantially entire range of the inner surface of the curved pipe portion, in which the vertical pipe connection port of the pipe joint is projected in the vertical direction, is an inclined surface inclined by 40 ° or more, preferably 45 ° or more with respect to the horizontal direction. It is a thing.

[0011]

[Action]

 In the pipe joint of the present invention, when the filth falls from the vertical pipe, it collides with the inner surface of the curved pipe part in which the vertical pipe connection port is projected in the vertical direction, and this inner surface becomes a surface inclined by 40 ° or more with respect to the horizontal direction. Therefore, no loud noise is generated.

The reason for this is that when the collision surface is an inclined surface that does not reach 40 ° with respect to the horizontal direction, most of the falling energy of the filth is converted into vibration of the joint, generating a noise that is problematic. However, if the sloping surface is inclined by 40 ° or more, even if the filth collides, the filth moves further downward, and the falling energy becomes only part of the sound. Therefore, it is considered that the noise is small.

Further, when the inner surface of the curved pipe portion in which the vertical pipe connection port is projected in the vertical direction is inclined by 40 ° or more with respect to the horizontal direction as described above, the variation of the inclined surface is reduced, and Also, variations in generated noise are reduced.

[0014]

【Example】

 Next, an embodiment of the present invention will be described. 1 and 2 show one embodiment of the present invention. FIG. 1 is a sectional view showing a sewer pipe joint of the present invention, and FIG. 2 is a sectional view showing a usage state of the pipe joint shown in FIG.

FIG. 3 shows another embodiment of the present invention and is a sectional view showing a pipe joint of the present invention. 1 and 2, A is a vinyl chloride resin pipe joint, and this pipe joint A comprises a vertical pipe connection port 1, a horizontal pipe connection port 2, and a curved pipe portion 3 between the two.

The inner surface of the portion 31 of the curved pipe portion 3 in which the vertical pipe connection port 1 is projected in the vertical direction is an inclined surface inclined by 40 ° or more with respect to the horizontal direction. A vertical pipe 4 is connected to the vertical pipe connection port 1 of the pipe joint A.

Reference numeral 5 denotes a horizontal pipe, which is connected to the horizontal pipe connection port 2 of the pipe joint A. Numeral 6 is a filth falling in the vertical pipe 4. Next, a method of using this pipe joint A will be described.

The horizontal pipe 5 connected to the sewer main is fixed to the bottom of the slab on the first floor with a reinforcing bar or the like. On the other hand, the vertical pipe 4 for drainage of a house, for example, a 10-story apartment house is lowered near the horizontal pipe 5, and the pipe joint A connects them.

A horizontal drain pipe from a household is connected to the vertical pipe 4. Explaining the usage state of the drainage pipe constructed in this way, the sewage 6 discharged from the home falls in the vertical pipe 4 and is projected in the vertical direction of the curved pipe portion 3 of the pipe joint A. It collides with the inner surface of the minute 31.

At this time, since the inner surface of the portion 31 of the curved tube portion 3 projected in the vertical direction is an inclined surface inclined by 40 ° or more with respect to the horizontal direction, the sound generated when the dirt 6 falls Is relatively small.

After that, the filth 6 flows through the horizontal pipe 5 to the sewer main along with the sewage that has fallen from the vertical pipe 4 along the pipe wall. Next, the following experiment was conducted in order to evaluate how small the sound generated when the waste 6 collides with the pipe joint A.

(Experiment) 50 parts by weight of miso and 50 parts by weight of wheat flour were kneaded, and this was molded into a diameter of about 3 cm and a length of about 10 cm to produce a pseudo filth.

This simulated waste was put in a Western-style toilet in a house on the 10th floor and flushed with water. The noise was measured 5 times in a room on the first floor that was closest to the pipe joint connecting the vertical and horizontal pipes.

The vertical pipe used at this time had a diameter of 100 mm, and the horizontal pipe had a diameter of 125 mm. The inner surface of the curved pipe part, which was obtained by vertically projecting the vertical pipe connection port of the sewer coupling, was oriented horizontally. Is an inclined surface inclined by 60 °.

The results are shown in Table 1.

[0026]

[Table 1]

As is clear from the results of this experiment, the noise was about 10 dB lower than the conventional noise, and the variation was small. Also, when I actually heard it in the room on the first floor, it was almost unnoticeable.

Next, the embodiment shown in FIG. 3 will be described. In the embodiment shown in FIG. 3, the pipe joint Aa is different from the embodiment shown in FIGS. 1 and 2 only in the shape of the inner surface of the portion 31a of the curved pipe portion 3a obtained by vertically projecting the vertical pipe connection port 1a. Is the same as the embodiment shown in FIGS.

[0029]

[Effect of the device]

 When the pipe joint of the present invention is used, almost the entire area of the inner surface of the curved pipe portion in which the vertical pipe connection port is projected in the vertical direction is an inclined surface inclined by 40 ° or more with respect to the horizontal direction. Even if dirt falling from the bumper hits the inclined surface, no loud noise is generated.

Further, the variation of this noise is small. Therefore, people who live in the houses near this pipe joint do not have to feel uncomfortable and are extremely valuable.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention and is a sectional view showing a pipe joint of the present invention.

FIG. 2 is a cross-sectional view showing a state in which the pipe joint of FIG. 1 is used.

FIG. 3 shows another embodiment of the present invention and is a sectional view showing the pipe joint of the present invention.

FIG. 4 is a cross-sectional view showing a conventional pipe joint.

[Explanation of symbols]

 A, Aa Pipe joint 1, 1a Vertical pipe connection port 2, 2a Horizontal pipe connection port 3, 3a Curved pipe portion 31, 31a Portion where vertical pipe connection port is projected in the vertical direction 4 Vertical pipe 5 Horizontal pipe 6 Dirty

Claims (1)

[Scope of utility model registration request] 1. A vertical pipe connection port connected to a vertical pipe laid vertically, a horizontal pipe connection port connected to a horizontal pipe laid horizontally, and a curved pipe portion between the two. In the pipe joint, the pipe joint is characterized in that an almost entire range of the inner surface of the curved pipe portion in which the vertical pipe connection port is projected in the vertical direction is an inclined surface inclined by 40 ° or more with respect to the horizontal direction.