JP4891028B2 - Reform system of existing drainage stacks with ventilation pipes - Google Patents

Description

  The present invention relates to a drain pipe reforming system for switching to a siphon drainage system when a house is reformed.

  The drainage system that has been widely used in the past is the so-called gradient drainage system. In apartment buildings, drainage stacks are provided in the pipe space, and the drainage from the watering devices on each floor is basically the same. Is a system in which drainage pipes having a gradient are arranged on the upper surface of the slab or the lower surface of the slab, and are joined to a joint joined to a drainage stack on the same floor for draining. In addition, for example, a pressure drainage system has been proposed.

  However, the RC housing is said to have been around 60 years, and in recent years, housing renovation has become widespread. The biggest problem in this reform is the drainage. In other words, there is a drainage stack that passes through each room, but it was constructed when it did not meet the current design standards, so the necessary thickness was not secured originally, or the pipe was deteriorated. There is also.

  In this reform, since this drainage stack penetrates each room (common part), the drainage stack itself has been renovated with great difficulty. For this reason, it is proposed that a drainage stand pipe is newly installed in the common part as a renovation method, and the existing drainage stand pipe is left as it is.

  Furthermore, there are many cases where it is desired to change the arrangement of the room, that is, change the arrangement of the watering device in the reform. However, when the conventional gradient drainage system is adopted again as a drainage system after reform, if the distance from the drainage standpipe installed in the pipe space becomes far away, the space under the floor is required. It is said. It has been pointed out that this leads to a reduction in the vertical space of the living space, which cannot be said to be excellent as a residence. For this reason, it is a fact that the change of the arrangement of the room or the like can be kept to a minimum.

  Nowadays, a siphon drainage system has been proposed as a technique for simultaneously solving the problems of the drainage stand and the watering device, the problem of the vertical space of the living space, and the like (Patent Documents 1 and 2). The outline of such a siphon drainage system is that drainage stacks are placed above and below the apartment house, and siphon drainage pipes are laid along the slab surface with no gradient from the watering equipment, and the drainage pipes are suspended from the drainage pipes. And is connected to the merging portion with a constant water head difference Hs. The drainage from the watering device flows in a full flow through the drainage pipe and tries to drain the water in the drainage pipe at once by the tensile force when it falls with a head difference Hs. A system including a temporary storage tank has also been developed especially for a watering device in which a reservoir is poured.

JP 2000-297447 A

JP 2003-201727 A

  Such a siphon drainage system is characterized in that the watering device can be sufficiently drained even at a considerable distance from the drainage standpipe, and further has the advantage that it is not necessary to narrow the living space in the vertical direction. Although it can be said that it is a suitable technique for solving the problem at the time of reform, there are not many proposals of the construction technique in the case of actually constructing at the time of reform.

  The present invention is to provide a reform system that eliminates the above-mentioned drawbacks mainly at the time of reform of an apartment house, and a new construction for changing from a conventional gradient drainage system to a siphon drainage system. This is a technical proposal.

  The gist of the present invention is a drainage system in which an existing drainage system is provided with a drainage standpipe, and is a reforming system that is a siphon drainage system after the reforming. Connect the drooping part of the siphon drainage pipe connected to the new drainage standpipe with a specified head difference, and connect the vent pipe to the existing drainage standpipe to connect the siphon drainage system after reforming. The present invention relates to a reforming system for ventilating an existing drainage stack characterized by being reused as a dedicated ventilation stack.

  The present invention has the above-described configuration, and intends to change the entire drainage system to a siphon drainage system by directly adopting the drainage standpipe of the existing drainage system as a dedicated ventilation standpipe. As a result, the cost for reforming is not only low, but also the degree of freedom in floor plan during the reforming is remarkably increased. Of course, improving workability is one of the effects.

  The present invention aims to fuse the existing gradient drainage system with the siphon drainage system at the time of reform, and intends to make a new drainage system by fully utilizing the parts of the existing system. is there. In other words, since the existing system is equipped with a drainage standpipe, it can be reused as a dedicated venting standpipe, reducing the cost of reforming and responding to changes in room layout, etc. It is a system that can.

  In siphon drainage, ventilation is necessary as a countermeasure against running out of sealed water in both the temporary storage tank system and the non-storage tank system. As an example of the ventilation method, there is a method that also serves as a drain pipe, but the most effective method is to install a dedicated ventilation standpipe. In particular, there is a case where a temporary storage tank is provided in order to cope with the sinking of the reservoir. However, since the waste water flows into the temporary storage tank or flows out rapidly, the air inside the temporary storage tank In and out of this will be carried out rapidly.

  Therefore, although a vent pipe is generally provided for the entry and exit of air in the temporary storage tank, the vent pipe has an odor and cannot be opened in the vicinity of the resident. For this reason, it is usually handled together with a siphon drain pipe connected to a watering device, and is connected to the junction of the drainage stack in the same way as this drain pipe. Therefore, the ventilation pipe is also directed to the junction. A hanging part is formed. This hanging part is a structure which is completely unnecessary for the vent pipe.

  In general, the drainage standpipe used in the existing drainage system is not used (blocked) as it is. However, in the present invention, the existing drainage standpipe is used as a dedicated venting standpipe for the siphon drainage system. This is to be used and has a structure close to a so-called loop ventilation.

  By adopting the configuration of the present invention, the following features can be mentioned. In other words, 1) it is no longer necessary to lay the dedicated ventilation standpipe unnecessarily long, 2) it is no longer necessary to hang the dedicated ventilation standpipe unnecessarily, and 3) it is no longer affected by the drainage of other floors. 4) The load on the new drainage standpipe can be reduced and the pipe diameter can be reduced. 5) Since the joint used for drainage can be used for the vent joint, there is no need to install a new joint. And the like.

  The present invention will be further described below with reference to examples. First, FIG. 1 is a diagram showing an outline of an existing gradient drainage system. That is, the drainage stack 1 and the watering devices 2a, 2b,. . . This is an example in which a drainage pipe 3 having a gradient between them is connected. S (n) is a slab, and all the watering devices 2a, 2b,. . . All the waste water discharged from the outlet is connected to the junction 4 installed in the drainage stack 1 on the same floor.

  FIG. 2 is a diagram showing an outline of the siphon drainage system. The drainage stacks 11 are arranged above and below the apartment house, and the watering devices 12a, 12b,. . . The drainage is once accumulated in the temporary storage tank 13 and the siphon drainage pipe 14 is laid along the surface of the slab S without any gradient. The drainage pipe 14 is provided with a hanging part 14A with respect to the drainage stack 11, and has a constant head difference Hs. Is connected to the junction 15. The drainage flows in the drainage pipe 14 at full flow, and the drainage pipes 14 and 14A try to drain the water in the drainage pipe at once by the tensile force when falling with the head difference Hs. And it is a system which equips the top part of the temporary storage tank 13 with the vent pipe 16, and connects to the junction part 15 with the drain pipes 14 and 14A.

  FIG. 3 is an embodiment of the present invention, and is a schematic diagram in which the existing drainage system of FIG. 1 is reformed and changed to a siphon drainage system. In this example, a drainage stack 21 for siphon drainage is newly erected in the common part, and the water-circulating devices 22a, 22b,. . . The position of is changed from the existing position. And the temporary storage tank 23 is provided, the siphon drain pipe 24 is connected, and it arrange | positions with no gradient along the slab Sn surface. On the other hand, a vent pipe 25 is connected to the temporary storage tank 23.

  And in connection with the drainage stack 21 and the drainage pipe 24, the junction part 26 was provided with the water head difference Hs, the drainage pipe 24 was drooped (hanging part 24A), and the front-end | tip was connected to the junction part 26. Is.

  On the other hand, the vent pipe 25 is a stand pipe used as the drainage standpipe 1 in the existing drainage system as it is as the dedicated vent standpipe 31. In this example, the slab Sn having the water-circulating devices 22a and 22b. In the same plane, the existing junction 4 is connected as a junction 32 of the vent pipe 25.

  In this example, the drain pipe 13 is disposed on the lower surface of the slab Sn (not shown), but the lower surface of the slab Sn (from the lower floor to the ceiling).

  The present invention adopts the drainage standpipe of an existing drainage system as it is and changes the entire drainage system to a siphon drainage system, which not only reduces the cost of reforming but also reduces the cost of reforming. The degree of freedom in the floor plan was significantly increased. Note that it is difficult to pipe a long distance even for a ventilation pipe, and in this respect also, workability is greatly improved.

FIG. 1 is a diagram showing an outline of an existing gradient drainage system. FIG. 2 is a diagram showing an outline of the siphon drainage system. FIG. 3 is an embodiment of the present invention, and is a schematic diagram in which an existing drainage system is reformed and changed to a siphon drainage system.

Explanation of symbols

1. Drainage standpipe in existing gradient drainage system,
2a, 2b ... Watering equipment in the existing gradient drainage system,
3. Drain pipe in existing gradient drainage system,
4 ... Confluence of existing gradient drainage system,
11. Drainage stack in siphon drainage system,
12a, 12b ... Watering devices in the siphon drainage system,
13 Temporary storage tank
14. Drain pipe in siphon drainage system,
14A: Drainage of drain pipe in siphon drainage system,
15. The junction in the siphon drainage system,
16. Ventilation pipe in siphon drainage system,
21. Drainage stack in the system of the present invention,
22a, 22b ... watering device in the system of the present invention,
23. Temporary storage tank,
24. Drain pipe in the system of the present invention,
24A... Drainage pipe of the drainage pipe in the system of the present invention,
25. Ventilation pipe in the system of the present invention,
26. Junction section in the system of the present invention,
31. Ventilation standpipe,
32. Junction,
S: Slab.

Claims (3)

  The existing drainage system is a drainage system equipped with a drainage standpipe, and is a reforming system that is a siphon drainage system after reforming, and a siphon drainage with a new siphon drainage standpipe connected to a watering device Connect the hanging part of the pipe to the newly constructed drainage stack with a specified head difference, and connect the ventilation pipe to the existing drainage stack and re-use it as a dedicated ventilation stack for the siphon drainage system after reforming. A reforming system for ventilating existing drainage stacks, which is characterized by being used.   The reforming system for ventilating an existing drainage stack according to claim 1, wherein the siphon drainage system is a system having a temporary storage tank.   The reforming system for ventilating an existing drainage stack according to claim 2, wherein the vent pipe is connected to the top of the temporary storage tank.

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