JP2585008Y2 - Pipe fittings - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a pipe joint. In detail, from a vertical connection port connected to a vertical pipe laid in the vertical direction, a horizontal pipe connection port connected to a horizontal pipe laid in the horizontal direction, and a curved pipe portion between the two. Pipe joints.

[0002]

2. Description of the Related Art Conventionally, a pipe joint for connecting a standing pipe laid in a vertical direction and a horizontal pipe laid in a horizontal direction is, as shown in FIG. And a horizontal pipe connection port 102 to be connected to the horizontal pipe, and a curved pipe portion 103 having a substantially uniform arc-shaped inner surface between the two. Therefore, the inner surface of the curved pipe portion in which the standing pipe connection portion is projected in the vertical direction and a portion close to the horizontal pipe connection port (FIG. 7)
(The portion at the point X shown in FIG. 3) is an inclined surface much smaller than 40 ° with respect to the horizontal direction.

[0003]

However, when wastewater accompanied with waste is drained into a drainage pipe using such a conventional pipe joint, the waste falling from the standing pipe hits the inner surface of the curved pipe portion of this joint. Emits a loud sound. In particular, in multi-family dwellings, there are many dwellings on the second floor or higher, and when draining sewage with filth from the dwellings on the second floor or higher, the sewage falls freely in the vertical pipe faster than the sewage and rebars etc. under the slab on the first floor Collides with the inner surface of the curved pipe portion of the pipe fitting fixed at 125 Hz to 125 Hz.
Noise having a low-frequency sound of about 0 Hz as a peak is generated.
This noise is frequently generated in apartment buildings 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. In particular, when the background noise at night is small, this sound is often heard and poses a problem.

The present inventor has conducted various studies in order to solve this noise, and as a result, the following has been found. 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 dirt falling from the standing pipe connection port is disposed in the vertical direction of the standing pipe connection port. It has been found that the magnitude of the generated sound is completely different because the inclination differs depending on the collision with the plane projected on the inner surface and the collision position of the arc-shaped inner surface. That is, 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. The inner surface close to the vertical pipe has a large angle with the horizontal plane and is close to the vertical plane. The sound turned out to be relatively quiet. Therefore, the present invention has been made based on the above research results, and an object of the present invention is to provide a pipe joint in which the falling sound of waste is relatively small.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and achieve the above object, and comprises a standing pipe connection port connected to a standing pipe laid vertically. In a pipe joint consisting of a horizontal pipe connection port connected to a horizontal pipe laid in the horizontal direction and a curved pipe section between the two, an inner surface below the curved pipe section in which the standing pipe connection port is vertically projected. On the horizontal plane
This is a pipe joint provided with a projection inclined with respect to .

[0006] The material of the pipe joint in the present invention may be any material, but conventionally used metals such as cast iron,
A synthetic resin such as a vinyl chloride resin, an inorganic material such as concrete, or a composite material thereof is preferable. The structure of the standing pipe connection port and the horizontal pipe connection port may be the same as the conventional one. or,
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.

[0007] The pipe joint of the present invention has a vertical pipe connection port on the inner surface below a curved pipe portion projected vertically to a horizontal plane.
Although the projections are inclined , the shape and the number of the projections may be arbitrary. 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-like projections long in the longitudinal direction, because the dirt falling from the standing pipe flows along the folds. In addition, the fold-like projection may be a single protrusion or a plurality of protrusions.

[0008] The inside of the projection may be hollow or solid. In particular, 40 ° to the horizontal plane
As described above, it is preferable to provide a projection having an inclined surface inclined at an angle of 45 ° or more, or a plurality of ridge-shaped projections, since the sound when a falling waste collides is extremely low.

When a plurality of ridge-shaped projections are provided, the height is preferably 5 mm to 20 mm, and the pitch of the projections is preferably 5 to 40 mm. When providing a fold-like projection, a rod-shaped body having a semicircular cross section may be attached to the inner surface of the curved pipe, or the pipe wall of the curved pipe part which vertically projects the standing pipe connection port is depressed from the outside,
A projection may be formed.

[0010]

[Function] In the present invention, when filth falls from the standing pipe,
It collides with the lower inner surface of the curved pipe part projected vertically from the riser connection port, but this lower inner surface is inclined with respect to the horizontal plane.
Since the projection is provided, no loud noise is generated. In particular, when the collision surface is an inclined surface that does not reach 40 ° with respect to the horizontal plane, most of the falling energy of the filth is converted into vibration of the joint, which generates a loud noise that becomes a problem, but the inclination is more than 40 °. In the case of an inclined surface, even if dirt collides, the dirt moves further downward, so that only a part of the falling energy is sound. Therefore, it is considered that the noise is small.

[0011] Further, if the inner surface below the curved pipe portion in which the standing pipe connection port is projected in the vertical direction is inclined at an angle of 40 ° or more with respect to the horizontal plane, the variation of the inclined surface is reduced, and thus the variation of the inclined surface is reduced. In addition, the variation in generated noise is reduced.
Further, when the plurality of folds are provided in the longitudinal direction, the dirt falling from the standing pipe collides with the plurality of folds, and furthermore, while the dirt is deformed. Collides with the groove. Therefore, it is considered that the noise is reduced because the waste does not collide with the plane at the same time.

[0012] Further, if the fold-like projections are long in the longitudinal direction, even if filth falling from the standing pipe adheres to the fold-like hills or grooves, it is flushed to the drainage containing sewage that falls next. The wastewater flows along the folds together with the drainage, so that no dirt accumulates in the curved pipe.

[0013]

Next, an embodiment of the present invention will be described. Figures 1-2
1 shows an embodiment of the present invention. FIG. 1A is a longitudinal sectional view showing a state where the pipe joint is cut in a longitudinal direction, and FIG. 1B is a sectional view taken along line II of FIG. FIG. 2 is a cross-sectional view showing a state where the pipe joint shown in FIG. 1 is used. FIG. 3 shows another embodiment of the present invention.
(A) is a longitudinal sectional view showing a state where the pipe joint is cut in the longitudinal direction, and (B) is a transverse sectional view showing a state where the pipe joint shown in (A) is cut along line III-III.

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. 6A and 6B show another embodiment of the pipe joint of the present invention. FIG. 6A is a longitudinal sectional view showing a state where the pipe joint is cut in the longitudinal direction, and FIG. -V
It is a cross-sectional view showing the state cut by I line.

In FIGS. 1 and 2, A is a pipe joint made of a vinyl chloride resin. The pipe joint A has a vertical pipe connection port 1, a horizontal pipe connection port 2, and a curved pipe portion 3 between the two. Consists of Then, under the bent tube portion 3 obtained by projecting the standpipe connection port 1 in the vertical direction
The inner surface 31 is provided with a pleat-like projection 32 having an inclined surface inclined at an angle of 40 ° or more with respect to a horizontal plane in a longitudinal direction.

Reference numeral 4 denotes a standpipe. The standpipe 4 is connected to a standpipe connection port 1 of a 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. 6 is a standing pipe 4
It is filth falling inside.

Next, the method of using the pipe joint A will be described.
explain. The horizontal pipe 5 connected to the sewer main is buried underground near the house. On the other hand, a house, for example, a 10-story multi-family sewer sewer pipe 4 is provided up to near the first floor, and further penetrates the slab of the first floor, and up to near the horizontal pipe 5 fixed by a reinforcing bar or the like under the slab. Extend and connect both with fitting A. The vertical pipe 4 is connected to a domestic toilet.

The state of use of the sewer constructed as described above will be described. The waste 6 discharged from the house falls in the standing pipe 4, and the standing pipe connection port 1 of the fitting A is projected vertically. It collides with the inner surface 31 below the curved tube portion 3. At this time, a projection 32 having an inclined surface inclined by 40 ° or more with respect to a horizontal plane is provided on an inner surface 31 below the curved pipe portion 3 in which the standing pipe connection port 1 is vertically projected. The sound when 6 falls is relatively low.

Thereafter, the filth 6 adhering to the pleats is swept down along the pleats by drainage containing sewage water that has fallen down the standing pipe 4 along the pipe wall.
The waste 6 flows through the horizontal pipe 5 to the wastewater pit or the sewer main.

Next, the following experiment was conducted in order to evaluate how small the noise generated when the waste 6 collides with the pipe joint A was. (Experiment 1) 50 parts by weight of miso and 50 parts by weight of flour were kneaded and molded into a diameter of about 3 cm and a length of about 10 cm to produce a pseudo-filt.

The pseudo waste was put into a Western-style toilet in a tenth-floor house and was flushed with water. Noise was measured five times in the room on the first floor of the house closest to the pipe joint connecting the standpipe and the horizontal pipe. The diameter of the standing pipe used at this time was 100 m.
m, the diameter of the horizontal pipe was 125 mm, and the inclined surface of the projection provided on the inner surface of the curved pipe part which projected the upright connection port of the pipe joint in the vertical direction was inclined 60 ° with respect to the horizontal plane. Table 1 shows the results.

[0022]

[Table 1]

As can be seen from the results of this experiment, the noise was reduced by about 8 dB from the conventional one, and the variation was small. Also, even when actually listening to 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 provided with an inner surface 31 below the curved pipe portion 3a which vertically projects the standing pipe connection port 1a.
a is provided with two protrusions 32a having an inclined surface inclined by 40 ° or more with respect to the horizontal plane. This point is shown in FIGS.
1 and 2 are the same as those of the embodiment shown in FIGS.

Next, the embodiment shown in FIG. 4 will be described. Pipe joint Ab shown in FIG. 4 is Hekomashi the outer surface of the curved pipe portion 3b, under the bent tube portion 3b obtained by projecting the standpipe connecting port in the vertical direction
On the other inner surface, a fold-like projection 32b having an inclined surface inclined by 40 ° or more with respect to a horizontal plane 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. The pipe joint Ac shown in FIG. 5 has an inner surface below the curved pipe portion 3c in which the standing pipe connection port is projected in the vertical direction, at an angle of 40 ° with respect to the horizontal plane.
The pleated hollow protrusion 32c having the inclined surface as described above.
Are 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. 6 will be described. The pipe joint Ad shown in FIG. 6 has five heights 10 on the inner surface below the curved pipe portion 3d which vertically projects the standing pipe connection port 1d.
The projections 32d of the folds having a semicircular cross section of 20 mm have a pitch of 20 m.
The length m is long in the longitudinal direction. This point is shown in FIGS.
Is different from the embodiment shown in FIG. The other structure is the same as that of the embodiment shown in FIGS.

Next, the pipe joint Ad of the embodiment shown in FIG.
The following experiment was conducted in order to evaluate how small the noise generated when colliding with filth was. (Experiment 2) 100 g of a commercially available lightweight oil clay (specific gravity: 0.95) was made spherical to produce a pseudo-filt.

The simulated waste was dropped from the top of the pipe of the 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 standpipe and the horizontal pipe. .
The diameter of the standing pipe and the horizontal pipe used at this time was 100 m.
m, and the pipe and the pipe joint are both made of vinyl chloride resin. Table 2 shows the results.

[0030]

[Table 2]

As can be seen from the results of this experiment, the noise was reduced by about 5 dB from the conventional one, and the variation was small.

[0032]

[Effect of the present invention] When the pipe joint of the present invention is used, a vertical pipe connection port is projected on the inner surface below a curved pipe portion in a vertical direction, on a horizontal surface.
Since the protrusions are inclined with respect to the vertical pipe, no loud noise is generated even if filth falling from the standing pipe collides with the inner surface below the curved pipe section. In particular, if a projection having an inclined surface inclined by 40 ° or more with respect to the horizontal plane is provided on the inner surface below the curved pipe portion which vertically projects the standing pipe connection port, dirt falling from the vertical pipe will be reduced by the projection. In this case, no loud noise is generated, the variation in the noise is small, and the effect is particularly large.

If the fold-like projections are provided long in the longitudinal direction, wastewater adhering to the projections is washed away, so that no waste is accumulated, which is convenient. In addition, when a plurality of fold-like projections are provided in the longitudinal direction, filth that has fallen from the standing pipe collides with the projections so as not to be lodged, so that no loud noise is generated. Therefore, a person living in a house near the sewage coupling does not feel unpleasant and is extremely valuable.

[Brief description of the drawings]

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

FIG. 2 is a sectional view showing a use state of the pipe joint shown in FIG. 1;

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

FIG. 7 is a longitudinal sectional view showing a state where a conventional pipe joint is cut in a longitudinal direction.

[Explanation of symbols]

 A, Aa, Ab, Ac, Ad Sewer fittings 1, 1a, 1d Upright connection 2 Horizontal connection 3, 3, 3a, 3b, 3c, 3d Bend 31, 31a, 31b, 31c, 31d Upright connection Inner surface 32, 32a, 32b, 32c, 32d whose mouth is projected in the vertical direction Projection 4 Standing pipe 5 Horizontal pipe 6 Dirt

Claims (4)

(57) [Scope of request for utility model registration] 1. A vertical pipe connection port connected to a vertical pipe laid in a vertical direction, a horizontal pipe connection port connected to a horizontal pipe laid in a horizontal direction, and a curved pipe portion between the two. in the pipe joint made of, under the bent tube portion obtained by projecting the standpipe connecting port in the vertical direction
A pipe joint characterized in that a projection inclined with respect to the horizontal direction is provided on one inner surface. 2. A curved pipe portion in which a standing pipe connection port is projected in a vertical direction.
2. The pipe joint according to claim 1, wherein a projection having an inclined surface inclined at least 40 [deg.] With respect to a horizontal plane is provided on an inner surface below the horizontal direction. 3. A pleat-like projection having an inclined surface inclined by 40 ° or more with respect to a horizontal plane is provided in a longitudinal direction on an inner surface below a curved pipe portion which vertically projects a riser pipe connection port. The pipe joint according to claim 1, wherein: 4. A plurality of fold-like projections are provided in a longitudinal direction on an inner surface below a curved pipe portion which vertically projects a riser pipe connection port in a longitudinal direction. Pipe fittings.