JPH0557067U - Pipe fitting - Google Patents

Abstract

(57) [Summary] [Structure] A vertical pipe connection port 1 connected to a vertical pipe, a horizontal pipe connection port 2 connected to a horizontal pipe, and a curved pipe portion 3 provided between the two. .. A protrusion 32 is provided on the inner surface 31 of the curved pipe portion 3 obtained by projecting the vertical pipe connection port 1 in the vertical direction. [Effect] The filth falling from the vertical pipe is the inner surface 3 of the curved pipe portion 3.
Since it hits the protrusion 32 of No. 1, no loud noise is generated.
Further, the dirt attached to the inner surface 31 is washed away by the drainage and does not collect on the inner surface 31. In this way, since a loud noise is not generated, the person living near this pipe joint A does not feel uncomfortable and is a valuable pipe joint.

Description

[Detailed description of the device]

[0001]

[Industrial application]

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

[0002]

[Prior Art]

 Conventionally, a pipe joint for connecting a vertical pipe laid vertically and a horizontal pipe laid horizontally is provided with a vertical pipe connection port 101 for connecting to a 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, a portion of the inner surface of the curved pipe portion obtained by projecting the vertical pipe connection port in the vertical direction and close to the horizontal pipe connection port (portion indicated by X in FIG. 7) is far from 40 ° with respect to the horizontal direction. It has a small slope.

[0003]

[Problems to be solved by the device]

 However, when sewage with filth is discharged into the drainage pipe using such a conventional pipe joint, the filth that falls in the vertical pipe hits the inner surface of the curved pipe portion of this joint and makes a loud noise. In particular, there are many dwelling units on the second floor and above in apartments. When draining dirty water from the dwelling units on the second floor and above, filth falls freely in the vertical pipe faster than sewage, and steel bars, etc. under the slab on the first floor. It collides with the inner surface of the curved pipe portion of the pipe joint fixed at 1, and 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 a person 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.

Therefore, the present inventor has conducted various studies to solve this noise, and has found the following. That is, as shown in FIG. 7, the inner surface of the curved pipe portion 103 of the conventional pipe joint has a smooth arc shape, 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 to the horizontal plane, and therefore the noise colliding with this portion is large, and the inner surface close to the vertical pipe has a large angle to the horizontal plane and is close to the vertical surface, so it collides with this portion. The sound made was found to be relatively quiet. Therefore, the present invention has been made based on the above research results, and an object thereof is to provide a pipe joint in which the sound of falling filth is comparatively small.

[0005]

[Means for Solving the Problems]

 The present invention has been made in order to solve the above problems and achieve the above-mentioned 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 portion between the two, a projection is provided on the inner surface of the curved pipe portion obtained by vertically projecting the vertical pipe connection port.

The material of the pipe joint in the present invention may be any material, but conventionally used metals such as cast iron, synthetic resins such as vinyl chloride resin, inorganic materials such as concrete, or composite materials thereof, etc. Is preferred. Further, the structures of the vertical pipe connection port and the horizontal pipe connection port may be the same as the conventional ones. Further, the material of the pipe connected to this pipe joint and the structure of the connection port may be the same as the conventional one.

In the pipe joint of the present invention, a protrusion is provided on the inner surface of the curved pipe portion obtained by projecting the vertical pipe connection port of the pipe joint in the vertical direction, but the shape and the number of the protrusion may be appropriate. For example, a large number of the protrusions may be provided in a conical shape, or may be provided in a fold shape. In particular, it is preferable to provide the fold-shaped protrusions in the longitudinal direction so that the filth that has fallen from the standing pipe flows along the folds. Further, the pleated protrusion may have one line or plural lines.

Further, the inside of the protrusion may be hollow or solid. In particular, it is preferable to provide a protrusion having an inclined surface inclined by 40 ° or more, preferably 45 ° or more with respect to the horizontal plane, or by providing a plurality of pleated protrusions, because the noise when the falling dirt collides is extremely small. ..

When a plurality of pleated protrusions are provided, a height of 5 mm to 20 mm and a protrusion pitch of 5 to 40 mm are preferable. When providing a fold-shaped protrusion, a rod-shaped body with a semicircular cross section may be attached to the inner surface of the curved pipe, or the pipe wall of the curved pipe part where the vertical pipe connection port is projected in the vertical direction is recessed from the outside to form a protrusion. May be formed.

[0010]

[Action]

 In the pipe joint of the present invention, when filth falls from the vertical pipe, it collides with the inner surface of the curved pipe part where the vertical pipe connection port is projected in the vertical direction, but since a protrusion is provided on this inner surface, a loud noise is generated. I don't. In particular, when the collision surface is an inclined surface that does not reach 40 ° with respect to the horizontal plane, most of the fall energy of the dirt is converted into the vibration of the joint, and a loud noise is generated, which is a problem, but the inclination of 40 ° or more. If it is a slanted surface, even if filth collides with it, the filth moves further downward, and the falling energy becomes only part of the sound. Therefore, it is considered that the noise is low.

Further, when the inner surface of the curved tube 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 plane, the variation of the inclined surface becomes small, and accordingly, Variations in generated noise are also reduced. If a plurality of pleated protrusions are provided in the longitudinal direction, the filth falling from the vertical pipe collides with the pleated protrusions and the filth is further deformed. While colliding with the groove. Therefore, it is considered that the noise is reduced because the dirt does not collide with the flat surface at the same time.

Further, when the pleated protrusion is provided long in the longitudinal direction, even if the filth that has fallen from the vertical pipe adheres to the ridged ridges or grooves, it is washed away by the wastewater containing the sewage that falls next. As a result, it flows along the folds along with the drainage, so filth does not collect in the curved pipe section.

[0013]

【Example】

 Next, an embodiment of the present invention will be described. 1 and 2 show an embodiment of the present invention. (A) of FIG. 1 is a longitudinal sectional view showing a state in which the pipe joint is cut in the longitudinal direction, and (b) shows the pipe joint shown in (a). FIG. 2 is a cross-sectional view showing a state cut along the line I-I, and FIG. 2 is a cross-sectional view showing a use state of the pipe joint shown in FIG. FIG. 3 shows another embodiment of the present invention, in which (a) is a longitudinal sectional view showing a state in which the pipe joint is cut in the longitudinal direction, and (b) shows the pipe joint shown in (a) along the line III-III. It is a cross-sectional view showing a state cut by.

FIG. 4 is a cross-sectional view showing another embodiment of the pipe joint of the present invention. FIG. 5 is a cross-sectional view showing another embodiment of the pipe joint of the present invention. FIG. 6 shows another embodiment of the pipe joint of the present invention. (A) is a longitudinal sectional view showing the pipe joint cut in the longitudinal direction, and (b) is the pipe joint shown in (a). FIG. 7 is a transverse cross-sectional view showing a state cut along the line -VI.

1 and 2, A is a pipe joint made of vinyl chloride resin, and this pipe joint A has a vertical pipe connection port 1, a horizontal pipe connection port 2 and a curved pipe portion 3 between them. Consists of. Further, the inner surface 31 of the bent tube portion 3 in which the vertical pipe connection port 1 is projected in the vertical direction is provided with a long fold-shaped projection 32 having an inclined surface inclined by 40 ° or more with respect to the horizontal plane. ..

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, and the horizontal pipe 5 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 the pipe joint A will be described. The horizontal pipe 5 connected to the sewer main is buried in the ground near the house. On the other hand, a house, for example, a sewer pipe 4 for the sewer of a 10-story apartment complex is installed up to the first floor, and further penetrates the slab on the first floor and up to a horizontal pipe 5 that is fixed under the slab with reinforcing bars. Extend and connect the two with pipe joint A. The vertical pipe 4 is connected to a toilet bowl at home.

Explaining the usage state of the sewer constructed in this way, the sewage 6 discharged from the home falls in the vertical pipe 4, and the vertical pipe connection port 1 of the pipe joint A is projected vertically. It collides with the inner surface 31 of the curved pipe section 3. At this time, since 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 provided with the projection 32 having an inclined surface inclined by 40 ° or more with respect to the horizontal plane, the waste 6 The sound when is dropped is relatively low.

After that, the filth 6 attached to the fold-shaped protrusions is washed away along the fold-shaped protrusions by the wastewater containing the sewage that has fallen from the standing pipe 4 along the pipe wall, and the filth 6 is removed together with the drainage. After passing through the horizontal pipe 5, it flows to the sewage pit or the sewer main.

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 1) 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 the room of the first-floor house that was closest to the pipe joint connecting the vertical pipe and the horizontal pipe. The vertical pipe used at this time had a diameter of 100 mm, and the horizontal pipe had a diameter of 125 mm. The sloped surface of the protrusion provided on the inner surface of the curved pipe part, which was obtained by vertically projecting the vertical pipe connection port of the pipe joint, It was inclined at 60 ° with respect to the horizontal plane. The results are shown in Table 1.

[0022]

[Table 1]

As is clear from the results of this experiment, the noise was about 8 dB lower than before, 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, in the pipe joint Aa, the vertical pipe connection port 1a is projected in the vertical direction. The inner surface 31a of the curved pipe portion 3a has an inclined surface inclined by 40 ° or more with respect to the horizontal plane. Articles are provided. This point is the same as the embodiment shown in FIGS. 1 and 2 except for the difference from the embodiment shown in FIGS.

Next, the embodiment shown in FIG. 4 will be described. The pipe joint Ab shown in FIG. 4 has an inclined surface inclined by 40 ° or more with respect to the horizontal plane on the inner surface of the curved pipe portion 3b in which the outer surface of the curved pipe portion 3b is recessed and the vertical pipe connection port is projected in the vertical direction. A ridge-shaped protrusion 32b is provided long in the longitudinal direction. This point is different from the embodiment shown in FIGS. Others are the same as the embodiment shown in FIGS.

Next, the embodiment shown in FIG. 5 will be described. In the pipe joint Ac shown in FIG. 5, a pleated hollow protrusion 32c having an inclined surface inclined by 40 ° or more with respect to the horizontal plane is formed on the inner surface of the curved pipe portion 3c in which the vertical pipe connection port is projected in the vertical direction. It is provided. This point is different from the embodiment shown in FIGS. Other than that, it is the same as the embodiment shown in FIGS.

Next, the embodiment shown in FIG. 6 will be described. In the pipe joint Ad shown in FIG. 6, projections 32d of ridges with a semicircular cross section having a height of 5 mm and a height of 10 mm are formed on the inner surface of the curved pipe portion 3d in which the vertical pipe connection port 1d is projected in the vertical direction at a pitch of 20 mm. Has been installed for a long time. This point is different from the embodiment shown in FIGS. Other than that, the structure is the same as that of the embodiment shown in FIGS.

Next, the following experiment was conducted in order to evaluate how small the sound generated when the pipe joint Ad of the embodiment shown in FIG. 6 collides with a waste material. (Experiment 2) 100 g of a commercially available lightweight oil clay (specific gravity 0.95) was made into a spherical shape to produce a pseudo filth.

The artificial filth was dropped from the uppermost pipe of a three-story experimental house, and the noise was measured on the fifth floor in the room of the first-floor house closest to the pipe joint connecting the vertical pipe and the horizontal pipe. .. The diameter of the vertical pipe and the horizontal pipe used at this time was 100 mm, and both the pipe body and the pipe joint were made of vinyl chloride resin. The results are shown in Table 2.

[0030]

[Table 2]

As is clear from the results of this experiment, the noise was about 5 dB lower than before, and the variation was small.

[0032]

[Effect of the device]

 When the pipe joint of the present invention is used, since the projection is provided on the inner surface of the curved pipe portion in which the vertical pipe connection port is projected in the vertical direction, even if dirt falling from the vertical pipe collides with the inner surface of the curved pipe portion. , No big noise is generated. In particular, if a protrusion with an inclined surface that is inclined by 40 ° or more with respect to the horizontal plane is provided on the inner surface of the curved pipe part that projects this vertical pipe connection port vertically, dirt falling from the vertical pipe will hit this protrusion. However, no significant noise is generated, the variation of this noise is small, and the effect is particularly large.

Further, it is convenient to form the fold-shaped protrusions long in the longitudinal direction because the drainage adhering to the protrusions causes the folds to be swept away, so that dirt is not accumulated. Further, when a plurality of pleated protrusions are provided in the longitudinal direction, the filth that has fallen from the stand pipe does not collide with the protrusions and generate a large amount of noise, which is particularly effective. Therefore, it is extremely valuable because it does not make the person living in the house near this sewer fitting feel uncomfortable.

[Brief description of drawings]

FIG. 1 shows an embodiment of the pipe joint of the present invention,
(A) is a longitudinal cross-sectional view showing a state in which the pipe joint is cut in the longitudinal direction, and (B) is a cross-sectional view showing a state in which the pipe joint shown in (A) is cut along a line I-I.

FIG. 2 is a cross-sectional view showing a usage state of the pipe joint shown in FIG.

FIG. 3 shows another embodiment of the pipe joint of the present invention, (a) is a longitudinal sectional view showing a state in which the pipe joint is cut in the longitudinal direction, and (b) is a pipe shown in (a). Fitting III-III
It is a cross-sectional view showing a state cut by a line.

FIG. 4 is a cross-sectional view showing another embodiment of the pipe joint of the present invention.

FIG. 5 is a cross-sectional view showing another embodiment of the pipe joint of the present invention.

FIG. 6 shows another embodiment of the present invention,
(A) is a longitudinal sectional view showing a state in which the pipe joint is cut in a longitudinal direction, and (B) is a transverse sectional view showing a state in which the pipe joint shown in (A) is cut along a VI-VI line.

FIG. 7 is a vertical cross-sectional view showing a state in which a conventional pipe joint is cut in the longitudinal direction.

[Explanation of symbols]

 A, Aa, Ab, Ac, Ad Sewer fitting 1, 1a, 1d Vertical pipe connection port 2 Horizontal pipe connection port 3, 3a, 3b, 3c, 3d Curved pipe part 31, 31a, 31b, 31c, 31d Vertical pipe connection Inner surface with the mouth projected vertically 32, 32a, 32b, 32c, 32d Protrusion 4 Standing pipe 5 Horizontal pipe 6 Dirty material

Claims (4)

[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 section between the both. In the pipe joint, the pipe joint is characterized in that a projection is provided on an inner surface of a curved pipe portion obtained by projecting a vertical pipe connection port in a vertical direction. 2. A projection having an inclined surface inclined by 40 ° or more with respect to a horizontal plane is provided on the inner surface of the curved pipe portion in which the vertical pipe connection port is projected in the vertical direction. Pipe fittings. 3. A fold-shaped projection having an inclined surface inclined by 40 ° or more with respect to a horizontal plane is provided in the longitudinal direction on the inner surface of the curved pipe portion in which the vertical pipe connection port is projected in the vertical direction. The pipe joint according to claim 1, which is characterized in that. 4. The pipe joint according to claim 1, wherein a plurality of pleated protrusions are provided long in the longitudinal direction on the inner surface of the curved pipe portion obtained by projecting the vertical pipe connection port in the vertical direction. ..