JP2565189Y2 - Drainage equipment for multi-story buildings - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage system provided in a multi-story building such as an apartment house or an office building.

[0002]

2. Description of the Related Art For example, in an apartment house, a drainage pipe is installed by penetrating a floor slab of a common facility piping space, and a horizontal drainpipe is connected to a branch pipe of the drainage pipe. Drainage equipment is provided above and below the drainage pipe with a drainage pipe connected via a mechanical joint or the like.

[0003]

The drainage stack in this drainage system is required to be made of a nonflammable material, including a drainage collecting pipe. Therefore, in general, cast iron pipes, drainage lining steel pipes or fibers are required. Although mortar double-layer pipes are used, the work efficiency in construction is extremely poor due to their heavy weight, and lining steel pipes for drainage and fiber mortar double-layer pipes are used per unit length (for example, when the diameter is 100
(2000 mm in length and 2000 mm in length), the material cost is low, but the construction cost is high.On the other hand, the construction cost is low because the cast iron pipe does not require a mechanical joint to connect with the drainage collecting pipe,
All of them have a problem in that the total cost is high, such as high material costs.

In a conventional drainage system, for example, a spiral body is provided inside a standing portion of a drainage collecting pipe, and the drainage that has entered the drainage collecting pipe is swirled to form a ventilation passage in the center of the pipe. Is formed to prevent pressure fluctuation of the horizontal drainage pipe due to drainage flowing through the drainage riser. However, providing the spiral body inside the drainage pipe in this way causes a special structure of the drainage pipe, resulting in a high unit price and an increase in cost. In addition, in the conventional drainage system, since there is no mechanism for positively turning the drainage inside the drainage pipe, the vertical flow velocity in the pipe is high and noise is generated at the time of flowing down. When the air flow is high, there is a problem that the flowing noise increases.

[0005] The present invention aims at improving the working efficiency and cost reduction in the construction of a drainage plumbing by a simple technique and, furthermore, actively turning the drainage inside the drainage plumbing so as to make the pipe in the vertical direction. It is an object of the present invention to provide a drainage system for a multi- story building in which the flow velocity is reduced and the flow noise is suppressed.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a drainage pipe which penetrates a floor slab.
And a horizontal drainage pipe is connected to the drainage pipe.
At the same time, in a drainage system of a multi-story building in which a drainage riser is connected to a standing portion of a drainage collecting pipe via a mechanical joint that compresses and reduces a diameter of a packing in a pipe axis direction,
As the drainage pipe, the inner surface is flat in the pipe axis direction
On the other hand, a thin-walled stainless steel spiral pipe is used as the drainage riser, and inside the connection part of the drainage riser to the drainage collecting pipe, the deformation of the drainage riser due to the diameter reduction of the packing is reduced. It is a member for preventing
Connected to one end of a cylindrical body whose
And is maintained by the step of the large diameter portion of the drainage collecting pipe.
It is made up of a ring that is held and obstructs the flow of drainage
The inner end surface of the cylindrical body is formed as a tapered surface so as not to
The deformation preventing member is attached to the packing by the cylindrical body.
Closely contact the inner surface of the drainpipe at the corresponding location,
It is characterized in that it is provided in a state where the plug body contacts the edge of the drainage riser .

[0007]

According to the above construction, the drainage standing pipe is made of a thin stainless steel spiral pipe which is not only nonflammable but also lightweight, thereby improving the workability of carrying around the pipe. It will be excellent. In addition, since there is a spiral groove on the inner surface of the drainage riser, the drainage is guided by the spiral groove when the drainage flows along the inner peripheral surface of the tube, thereby forming a spiral shape. Is reduced in the vertical direction. And, when connecting the drainage riser with the mechanical joint, even if the packing is strongly pressed to enhance the sealing property, the deformation prevention member is provided inside the drainage riser. Water leakage due to this is prevented. In particular, according to the above configuration,
The deformation prevention member is made of a cylinder whose outer diameter is almost equal to the inner diameter of the drainage riser.
And a large diameter of the drainage collecting pipe connected to one end thereof.
Of the ring body held by the step of the part
The tubular body is inserted into the drainage riser without expanding and deforming the drainage riser.
But still connected to one end of the tubular body.
The installed ring body contacts the edge of the drainage riser.
And the insertion depth of the rod into the drainage
And because of the presence of the ring body,
The gap between the peripheral surface and the inner peripheral surface of the large-diameter portion of the drainage pipe is
Precisely form a ring-shaped space for pushing the kin
be able to. Therefore, anyone can easily and accurately construct
And stable water leakage prevention performance without variation
Will be. In addition, the inner end surface of the cylindrical body has a tapered surface.
The outer diameter of the tubular body is approximately equal to the inner diameter of the drainage riser.
ゞ Even though they are equal, they do not obstruct the flow of drainage.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a part of a drainage system A provided in a multi-story building such as an apartment house or an office building.
A drain pipe 2 is installed by penetrating the floor slab 1 of the facility piping space S, and a horizontal drain pipe 4 is connected to a collecting branch pipe 3 of the drain pipe 2. Drainage standing pipes 7 are connected to the top and bottom of the standing pipe section 5 via mechanical joints 6.

The drainage collecting pipe 2 is made of cast iron.
As shown in FIGS. 2 and 3, a large-diameter portion 8 and a partial flange 9 connected to the large-diameter portion 8 are formed at the end of the upright portion 5, and a packing is provided on the end face side of the large-diameter portion 8. A tapered concave portion a for insertion is provided which is narrower.

The mechanical joint 6 includes a packing 10 inserted into a tapered recess a of the large diameter portion 8,
The partial flange 9 is connected via a bolt 11 and a nut 12.
And the packing pressing member 13 corresponds to the ring member 14 having a tapered surface portion b which expands outwardly corresponding to the tapered recessed portion a, and the partial flange 9. A flange 15 connected to the bolt 11 and the nut 1
2, the packing 10 is reduced in diameter by the action of the tapered concave portion a and the tapered surface portion b as the packing 10 is pressed in the pipe axis direction. It is configured to be strongly pressed.

On the other hand, the drainage riser 7 is formed of a spiral tube formed by spirally winding a thin and narrow stainless steel into a spiral shape, and the drainage riser 7 having such a structure is lightweight and easy to handle. In addition to being easy, the material cost per unit length (for example, 100 mm in diameter and 2000 mm in length) is slightly higher than that of a drainage lining steel pipe or a fiber mortar double-layer pipe, but is higher than that of a cast iron pipe. The cost is significantly lower and the construction cost is slightly higher than that of cast iron pipe due to the use of the mechanical joint 6, but it is cheaper than drainage lining steel pipe and fiber mortar double-layer pipe. ,
Total cost reduction of the drainage pipe 7 is achieved.

Further, as shown in detail in FIG. 4, the drainage vertical pipe 7 has a formed spiral groove d on the inner surface side of the spiral ridge portion c formed by the goby fastening. When flowing along the surface, it is guided by the spiral groove d to form a spiral shape, which reduces the flow velocity of the drainage in the pipe in the vertical direction. It is possible to reduce the flow noise due to the flow. Also,
As in the related art, the drainage can be swirled to form an air passage in the center of the drainage pipe 2 without providing a spiral body or the like in the standing pipe portion 5 of the drainage collecting pipe 2.

As described above, since the drainage pipe 7 itself has the function of rotating the drainage, it is possible to adopt a simple structure of the inexpensive drainage pipe 2 as the drainage collecting pipe 2, as described above. Since the drainage riser 7 is totally inexpensive in terms of material costs and construction costs, the cost of the entire drainage facility can be reduced.

The thin stainless steel helical tube used for the drainage riser 7 has a weak point in strength that is easily deformed in the diameter reducing direction. To make up for this, in the present invention,
The inside of the connection portion of the drainage riser 7 to the drainage collecting pipe 2, more specifically, the packing 1 of the mechanical joint 6
A deformation preventing member 16 for preventing the drainage vertical pipe 7 from being reduced in diameter is provided inside the drainage vertical pipe 7 at a position corresponding to “0”.

As shown in FIGS. 2 and 3, the deformation preventing member 16 is made of a metal such as cast iron or stainless steel or a synthetic resin such as bakelite.
A cylindrical body 17 that is almost in contact with the inner surface of the drainage riser 7 at a position corresponding to the packing 10 is connected to a ring body 18 held by a step of the large-diameter portion 8 of the drainage collecting pipe 2. In addition, the upper and lower inner end surfaces of the cylindrical body 17 are formed as tapered surfaces e so as not to hinder the flow of drainage.

By providing the deformation preventing member 16 in this manner, when the drainage vertical pipe 7 is connected to the drainage collecting pipe 2 by the mechanical joint 6, even if the packing 10 is strongly pressed to enhance the sealing property, Drainage pipe 7
Is reliably prevented, and the leakage of drainage through the space between the surface of the drainpipe 7 and the packing 10 is reliably prevented.

[0017]

[Effect of the Invention] As described above, according to the drainage device of the present invention, the thin stainless steel spiral pipe is adopted for the drainage riser, thereby improving the work efficiency and cost in the construction of the drainage riser. Achieved down-flow and, in addition, by making the drainage riser a spiral tube, the drainage is positively swirled inside the drainage riser, reducing the vertical flow velocity in the pipe and reducing downflow noise. Can be

The spiral tube made of thin stainless steel has a weak point in strength that is easily deformed in the diameter reducing direction. In the present invention, a structure is provided in which a deformation preventing member is provided in advance in the easily deformed portion. As a result, the deformation of the drainage pipe caused by the strong pressure of the packing by the mechanical joint for improving the sealing property, and the water leakage of the drainage are surely prevented.

[0019] In particular, according to the present invention, the deformation preventing member
A cylindrical body whose outer diameter is almost equal to the inner diameter of the drainage pipe, and one end of
At the large diameter portion of the drainage collecting pipe.
And a ring body that is held in place.
The cylindrical body can be inserted into the drainage stack without radial deformation.
And a ring connected to one end of the cylindrical body
The body comes into contact with the edge of the
Inserting cylindrical body into The depth can be specified, and
Due to the presence of the ring body, the outer peripheral surface of the
Press the packing between the large diameter portion of the pipe and the inner peripheral surface.
The ring-shaped space can be accurately formed. Obedience
Is easy and accurate for anyone,
Water-free leak-proof performance is ensured. Ma
Further, the inner end surface of the cylindrical body is formed as a tapered surface.
The outer diameter of the tubular body is almost equal to the inner diameter of the drainage riser.
Nevertheless, it does not hinder the flow of drainage.

[Brief description of the drawings]

FIG. 1 is a side view of a main part of a drainage facility.

FIG. 2 is an exploded perspective view of a main part of the drainage facility.

FIG. 3 is a sectional view of a main part of the drainage facility.

FIG. 4 is a cross-sectional view of a goby portion of a drainage vertical pipe formed by a thin stainless steel spiral pipe.

[Explanation of symbols]

2 ... drainage collecting pipe, 4 ... horizontal drainage pipe, 6 ... mechanical joint, 7 ... drainage vertical pipe, 10 ... packing, 16 ... deformation preventing member.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masayoshi Fukutake 4-1-1-13 Honcho, Chuo-ku, Osaka City Inside Takenaka Corporation Osaka Main Store (72) Inventor Fujio Nishi 4-1-1, Honcho, Chuo-ku, Osaka-shi No. Takenaka Corporation Osaka Main Store (56) References JP-A-4-34283 (JP, A)

Claims (1)

(57) [Scope of request for utility model registration] 1. A drainage pipe is provided through a floor slab.
And a horizontal drainage pipe is connected to the drainage pipe.
At the same time, in a drainage system of a multi-story building in which a drainage riser is connected to a standing portion of a drainage collecting pipe via a mechanical joint that compresses and reduces a diameter of a packing in a pipe axis direction,
As the drainage pipe, the inner surface is flat in the pipe axis direction
On the other hand, a thin-walled stainless steel spiral pipe is used as the drainage riser, and inside the connection part of the drainage riser to the drainage collecting pipe, the deformation of the drainage riser due to the diameter reduction of the packing is reduced. It is a member for preventing
Connected to one end of a cylindrical body whose
And is maintained by the step of the large diameter portion of the drainage collecting pipe.
It is made up of a ring that is held and obstructs the flow of drainage
The inner end surface of the cylindrical body is formed as a tapered surface so as not to
The deformation preventing member is attached to the packing by the cylindrical body.
Closely contact the inner surface of the drainpipe at the corresponding location,
A drainage system for a multi-story building, wherein the drainage body is provided in a state where the body comes into contact with an edge of a drainage riser.