JPH06306902A - Drain collecting method - Google Patents

Abstract

(57) [Summary] [Purpose] To improve molding workability and accuracy of the inclination angle of the blade with respect to the tube axis. [Structure] The lower end of the branch pipe receiving port 6 is provided in the main pipe portion 2 in which the drain pipe standing pipe joints 3 and 4 are provided at both ends in the pipe axial direction and the branch pipe receiving ports 5 and 6 are provided in a direction orthogonal to the pipe axis. In the drainage collecting pipe 1 which is positioned below the branch pipe and in which the straightening vanes 9 inclined with respect to the pipe axis are projected, the straightening vanes 9 are located below the branch pipe receiving port 6 in the main pipe portion 2. Liner 8 fitted like
It is integrally formed on the inner surface of.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage collecting pipe in a multi-story building.

[0002]

2. Description of the Related Art Conventionally, in a multi-story building such as a condominium, a one-pipe type drainage pipe is employed as shown in FIG. 6, and this pipe is provided with a plurality of drainage stands from the upper floor to the lower floor. The pipes 21 and 22 are connected and penetrated into a single drainage pipe through the drainage collecting pipe 23, the drainage collecting pipe 23 is located in the through hole 25 provided in the floor slab 24, and the floor slab 24 is filled with the mortar 26. It is fixed.

Further, the collecting pipe 23 is provided with branch pipe receiving ports 30 and 31 for joining side branch pipes 28 and 29 for discharging dirty water of a toilet 27 of a living area on each floor and miscellaneous waste water such as a bath, Further, one or a plurality of flow straightening vanes 32 are provided in the lower portion of the collecting pipe 23 so as to give a swirling force to the flow of drainage to reduce the air pressure fluctuations in the pipes. The lower surface of is contacted with the upper surface of the floor slab 24.

[0004]

By the way, in the conventional drainage collecting pipe 23, the flow straightening vanes 32 are integrally formed in the main pipe portion, and therefore, the vane model is artificially formed after forming the body of the casting model. Although they are bonded, there is a problem in that the bonding work is troublesome and inefficient, and the accuracy of the inclination angle with respect to the tube axis cannot be satisfactorily obtained.

The present invention has been made in view of the above situation, and an object of the present invention is to provide a drainage collecting pipe which can improve the molding workability and the accuracy of the inclination angle of the blade with respect to the pipe axis. To provide.

[0006]

In order to achieve the above object, the present invention takes the following technical means. That is, according to the present invention, the drainage vertical pipe joints are provided at both ends in the pipe axis direction, and the drain pipe standing joint is provided in the main pipe portion provided with the branch pipe receiving port in the direction orthogonal to the pipe axis. In the drainage collecting pipe in which the straightening vanes inclined with respect to the pipe axis are projected, the straightening vanes are attached to the inner surface of the liner fitted so as to be located below the lower end of the branch pipe receiving port in the main pipe portion. It is characterized by being integrally formed.

Further, the present invention is characterized in that a vibration-proof lining layer is provided between the inner surface of the main pipe portion and the liner.

[0008]

According to the present invention, since the straightening vanes are integrally provided on the inner surface of the liner, the shape of the model is simplified, the straightening vane model can be accurately adhered to the inner surface of the liner model, and after modeling by casting or the like. Since the liner having the flow control vanes is fitted into the main pipe portion of the drainage collecting pipe, the inclination angle with respect to the pipe axis and the positional accuracy with respect to the branch pipe receiving port can be secured.

Further, by providing the anti-vibration lining layer between the liner and the main pipe portion, the vibration produced when the drainage collides with the flow straightening vanes is absorbed by the anti-vibration lining layer,
Vibrations that enter the floor slab from the drainage collecting pipe through the mortar that is in contact with the drainage collecting pipe are reduced, and it is possible to prevent the noise from being emitted as solid propagating sound to the living room and the like.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 show a first embodiment of the present invention, in which 1 is a drainage collecting pipe made of cast iron, in which drainage standing pipe joints 3 and 4 are provided at both ends in the pipe axial direction of the main pipe portion 2 and upper drainage The standing pipe joint portion 3 is divided from the main pipe portion 2 and connected by a bolt or the like, and the upper end portion 2A of the main pipe portion 2 has a rectangular box shape in a cross section orthogonal to the pipe axis, as shown in FIG. The dimension between the opposing walls is larger than the diameter of the drainage vertical pipe.

The box-shaped portion of the main pipe portion 2 is provided with a plurality of branch pipe receiving ports 5 and 6 in a direction orthogonal to the pipe axis, and the main pipe portion 2 is connected to the middle and lower drainage standing pipe joint portions 4 thereof. A taper pipe portion 7 is formed between them, and a liner 8 is fitted between the middle of the main pipe portion 2 and the inner surface of the taper pipe portion 7 and is bonded and integrated with an adhesive or the like to be integrated. The liner 8 is made of cast iron, and as shown in FIGS. 3 and 4, a straightening vane 9 is integrally formed on the inner surface thereof so as to project at an inclination angle with respect to the tube axis.

A drainage standing pipe joint connecting flange 10 is provided at the upper end of the main pipe 2. Then, at the lower end of the drainage vertical pipe connecting portion 3, a connecting flange 11 is provided corresponding to the flange 10 and an inward flange 12 is provided. As shown in FIGS. 3 and 4, the liner 8 includes an upper circular pipe portion 8A and a lower tapered pipe portion 8B, and is fitted to the lower portion of the main pipe portion 2 and the inner surface of the tapered pipe portion 7. And glued. The liner 8 is fitted from above after forming the main pipe portion 2 of the drainage collecting pipe 1.

According to the first embodiment, since the straightening vanes are not directly provided in the main pipe portion 2, the casting model of the main pipe portion 2 and the drainage standing pipe joint portion 3 is very easily manufactured, and the accuracy is high. The liner 8 can be molded well, and also in the production of the molded model of the liner 8, it is easy to mold because it is a simple tubular body, and the work of bonding the straightening vane model to the inner surface of the liner 8 model is also easy. It can be performed with high accuracy, and sufficient accuracy can be secured. Then, the liner 8 is fitted into the main pipe portion 2 so that the rectifying blade 9 can be easily positioned, and satisfactory accuracy can be obtained.

In the above embodiment, the liner 8 and the blade 9 can be formed of synthetic resin (for example, a corrosion-resistant material such as vinyl chloride), ceramics, etc., and the inner peripheral surface of the liner 8 and the surface of the rectifying blade can be formed. Since it can be made smooth, it is difficult for the toilet paper or the like to be caught, the swirling force of the drainage can be smoothly applied, and the rectifying effect can be sufficiently exerted.

FIG. 5 shows the second embodiment of the present invention.
The difference from the embodiment is that the main pipe portion 2 is provided with branch pipe receiving ports 5 and 6 in two steps, and the whole main pipe portion 2 has a circular cross section and is vertically divided into two below the lower side branch pipe receiving port 6. The upper and lower main pipe portions 2A and 2B are connected and integrated with each other by bolts or the like (not shown), and a vibration-proof lining layer (for example, vibration-proof rubber) 13 is provided between the liner 8 and the lower main pipe portion 2B. Is.

According to the second embodiment, in addition to the effects of the first embodiment, the vibration-proof lining layer 13 absorbs the vibration generated by the drainage that collides with the straightening vanes 9 and the liner 8, and the lower main pipe portion 2B. It is possible to reduce vibrations that are incident on the floor slab from the floor slab and prevent solid-borne sound from being emitted from the floor slab into the living area and generating noise.
In addition, since the anti-vibration material is installed inside the drainage collecting pipe 1,
It is safe for disaster prevention and does not conflict with the laws and regulations related to these.

In the second embodiment, the liner 8 and the rectifying blade 9 are integrally molded of a corrosion resistant material such as ceramics or synthetic resin (vinyl chloride, etc.) to smooth the inner surface of the liner 8 and the surface of the blade 9. In addition, it is possible to prevent the toilet paper or the like from being caught, and it is possible to fully exert the rectifying effect. Further, also in the drainage collecting pipe 1 in the first embodiment, a vibration damping running layer can be provided between the liner 8 and the main pipe portion 2.

Further, the drainage collecting pipe 1 in the second embodiment.
In, the liner 8 can be directly fitted and fixed in the lower main pipe portion 2B without the vibration-proof lining layer 13, and the number of flow straightening blades 9 can be appropriately increased or decreased. The present invention is not limited to the above-described embodiment, but can be applied to drainage collecting pipes of other types, and the design can be appropriately changed.

[0019]

As described above, according to the present invention, a branch pipe receiving portion is provided in both ends in the pipe axial direction, and a branch pipe receiving portion is provided in a main pipe portion provided with a branch pipe receiving portion in a direction orthogonal to the pipe axis. In a drainage collecting pipe which is located below the lower end of the mouth and in which a straightening vane inclined with respect to the pipe axis is projected, the straightening vane is located below the lower end of the branch pipe receiving port in the main pipe portion. It is characterized by being integrally formed on the inner surface of the fitted liner, so that the molding work is easy and the quality of the straightening vanes and the accuracy of the inclination angle with respect to the pipe axis are improved, and the quality is improved. Can be achieved.

Further, the present invention is characterized in that a vibration-proof lining layer is provided between the inner surface of the main pipe portion and the liner. Therefore, the vibration-proof lining layer prevents the propagation of vibration. It is possible to reduce solid-borne sound, prevent noise, and be extremely safe in terms of fire resistance.

[Brief description of drawings]

FIG. 1 is a sectional view taken along line AA of FIG. 2 showing a first embodiment of the present invention.

2 is a top plan view of FIG. 1. FIG.

FIG. 3 is an enlarged vertical sectional view of the liner of the same embodiment.

FIG. 4 is a top plan view of FIG.

FIG. 5 is a central longitudinal sectional view showing a second embodiment of the present invention.

FIG. 6 is a partially cutaway front view of a conventional example.

[Explanation of symbols]

 1 Drainage collection pipe 2 Main pipe part 3 Drainage pipe joint part 4 Drainage pipe joint part 5 Branch pipe receiving part 6 Branch pipe receiving part 8 Liner 9 Straightening vane 13 Anti-vibration lining layer

Claims (2)

[Claims] 1. A drainage vertical pipe joint is provided at both ends in the pipe axis direction, and is located below a lower end of the branch pipe receiving port in a main pipe section provided with a branch pipe receiving port in a direction orthogonal to the pipe axis. In a drainage collecting pipe in which straightening vanes inclined with respect to the pipe axis are projected, the straightening vanes are integrated with the inner surface of a liner fitted so as to be located below the lower end of the branch pipe receiving port in the main pipe portion. Drainage collecting pipe characterized by being formed in a uniform manner. 2. The drainage collecting pipe according to claim 1, wherein a vibration-proof lining layer is provided between the inner surface of the main pipe portion and the liner.