JP4811929B2 - Drainage collecting pipe - Google Patents

Description

  The present invention relates to a drainage collecting pipe having a function of preventing noise at the time of drainage called “body propagation sound”.

In drainage pipe systems, etc. used in multi-storey buildings such as apartment buildings, drainage noise propagates to floor slabs and radiates indoors for piping members such as drainage pipes that are installed through floor slabs. Various measures have been proposed for preventing the so-called body-borne sound.
Applicant has argued that a vibration insulator using rock wool or the like is provided around the drainage collecting pipe, and a mortar is provided between the outer periphery of the vibration insulator and the inner peripheral surface of the through hole provided in the floor slab. Has been developed and a patent application has been filed (hereinafter referred to as “prior application technology”: Patent Document 1, etc.). In this prior application technique, a waterproof ring is provided in a state of covering the upper annular surface of the vibration insulator, and this waterproof ring prevents leakage of water that permeates in the thickness direction of the floor slab.
JP 2002-275975 A

  In the prior application technology, the effect of preventing the body-borne sound and the effect of preventing the leakage of water in the thickness direction of the floor slab function sufficiently, and it is highly evaluated in the market. By the way, in recent years, safety standards for buildings, especially regulations related to fire countermeasures, have been increasing with the passage of time, and among them, the recognition that several minutes from the time of a fire is the most important escape time zone is divided. In order to secure this time zone, the prevention of fire spread to the floor and the prevention of smoke generation in the event of a fire has been reviewed, and a new regulation proposal is being considered for the future.

  The waterproof ring used to prevent water leakage in the floor slab thickness direction in the prior application technology was made of EPDM (ethylene, propylene, diene copolymer synthetic rubber) and other materials. While voluntarily preventing drainage noise and preventing leakage of water in the direction of the floor slab thickness, people have developed to further prevent fire spread and smoke.

  The present invention has been made in view of the above circumstances, and can prevent drainage noise and prevent leakage of water in the thickness direction of the floor slab, and can prevent fire spread and smoke generation in the event of a fire. The purpose is to provide a drainage collecting pipe.

In order to achieve the above object, the present invention has taken the following measures.
That is, the drainage collecting pipe according to the present invention is provided with at least one branch pipe connecting portion for the pipe main body having the upper inlet portion and the lower outlet portion, and the pipe main body and the branch pipe connecting portion have fire resistance. waste water collecting pipe which is formed by including, vibration insulator in a state surrounding the fitting portion into the through hole of the floor slabs of the outer peripheral surface of the pipe body is provided, et al is, the vibration insulator exposed at the top opening of the through hole contact circumference water stopping material is provided, et al is on the outer peripheral surface entire periphery of and the pipe main body overlies the upper annular surface all around specifically state the vibration insulator for blocking to, fire testing of the water stopping material is building in made form a material and having a vibration absorbing property of being compatible heat and Fukemuri, the water stopping material is provided to the portion that fits into the through-hole in the tube body, at least in the through hole A ring-shaped weir member is provided to surround the entire outer peripheral surface of the fitting part. The water stopping material is entire circumference to overhanging formed outwardly beyond the upper edge of said ring-like projected member.

  Since it has a vibration insulator in this way, it can prevent drainage noise (so-called body-propagating sound) and prevent water leakage in the direction of the floor slab thickness, as in the prior application. Since the waterproofing material is made of a material that has heat resistance and smoke-free compatibility and vibration absorption in the fire resistance test of the building, fire spread prevention and smoke prevention in the event of a fire can be obtained It became so.

Here, the “heat resistance and smoke-free compatibility” of the water-stopping material means that it can withstand a predetermined temperature during heating and does not generate smoke. Says having heat.
Further, “fire resistance” included in the pipe main body and the branch pipe connecting portion includes nonflammability.

In addition, by providing the ring-shaped weir member in this way, it is possible to prevent product variations in the outer dimensions of the water-stopping material, to achieve product homogenization, and thus to ensure the effect obtained after piping construction. Can be a thing. In addition, when mortar is packed between the outer peripheral portion of the water-stopping material and the inner peripheral surface of the through hole, there is also an advantage that it is possible to prevent an adverse effect such that a tensile action occurs in the water-stopping material when the mortar is cured and contracted. .

While the material that hardens from a fluidized state to a non-fluidized state is in a fluidized state, the waterstop material is formed by a ring-shaped weir member that is fitted around while holding a circumferential gap around the tube body, and an outer peripheral surface of the tube body. It is preferable that the outer periphery of the pipe body and the inner peripheral surface of the ring-shaped dam member are closely adhered by filling and curing between the circumferences.
If the water-stopping material and the outer peripheral surface of the pipe main body, and the water-stopping material and the inner peripheral surface of the ring-shaped dam member can be brought into close contact with each other, the effect of the water-stopping material can be reliably obtained. . In addition, it is suitable for a water stop material to be a material which produces moderate elasticity even after hardening to a non-flow state.

By the way, the water-stopping material may be made of an elastically deformable material and previously formed in a ring shape. When such a water-stopping material that can be elastically deformed is used, the water-stopping material is resisted against elasticity. What is necessary is just to make it fit in an interference | tight fitting shape to a pipe | tube main body, making it expand and deform | transform. Even if it does in this way, a water stop material and the outer peripheral surface of a pipe body can be stuck.
The water stop material may be formed from, for example, silicone (which is naturally heat resistant and smoke-free compatible). However, as long as it has heat resistance and non-smoke compatibility, those made of other elastic materials can be used.

In the drainage collecting pipe according to the present invention, the vibration insulator is provided around the pipe body and the waterproof ring is provided so as to cover the upper annular surface of the vibration insulator. In addition to preventing leakage of water in the thickness direction of the slab, the water-stopping material has heat resistance and smoke-free compatibility in the fire resistance test of the building, so it can prevent fire spread and smoke generation in the event of a fire. can get.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Incidentally, wastewater collection tube 1, the through-holes 3 provided in the floor slab 2 for partitioning each hierarchy In the multi-story buildings such as apartment, for example, as shown in FIG. 1 through longitudinally the pipe Installed. In the present specification, the floor slab 2 is not limited to one that divides each layer, but other than that, it is a building housing provided in a horizontal direction and has a vertical through hole 3 for piping in general. Shall be included.

  Further, the drainage collecting pipe 1 is provided with at least one branch pipe connecting portion 8 with respect to a pipe main body 7 having an upper inlet portion 5 and a lower outlet portion 6, and these pipe main body 7 and The branch pipe connection part 8 comprises fire resistance. When the branch pipe connecting portion 8 is two (two sides) that is a one-letter arrangement or an L-shape arrangement in a plan view, and is three (three sides) that is a T-shaped arrangement, Of course, the case of four (four sides) is included. The fire resistance includes the case where the entire drainage collecting pipe 1 is made of metal such as cast iron, and the case where it is a fireproof two-layer pipe (the inner layer is made of resin and the outer layer is made of fireproof mortar).

1 and 2 shows a wastewater collecting pipe 1, the waste water collection pipe 1 is vibrating insulator 10 and the water stopping member 11 on the tube body 7 is provided in the form fitted. In the illustrated example, the drainage collecting pipe 1 is in a portion that penetrates the through hole 3 of the floor slab 2, and the outer peripheral portions of the vibration insulator 10 and the water blocking material 11 and the inner peripheral surface 3 a of the through hole 3. The mortar 13 is packed between the laps.
The vibration insulator 10 is provided so as to surround a portion of the outer peripheral surface 7a of the tube body 7 that is fitted into the through hole 3 of the floor slab 2, and is formed of a porous sound absorbing material such as rock wool, for example. It has fire resistance, flame shielding and heat insulation.

The vibration insulator 10 is preferably covered with an aluminum glass cloth, an aluminum-based alloy or the like (not shown) on the entire outer peripheral surface thereof, thereby improving fire resistance, waterproofing, shape retention, The prevention of scattering of rock wool or the like that is the material of the vibration insulator 10 is also obtained. In the case of the illustrated example, since the outer peripheral surface 7a of the tube body 7 is formed as a taper tube with a lower recess, the vibration insulator 10 is also formed with a taper shape with both inner and outer peripheral surfaces in the same manner. The thickness is substantially uniform.

It is important that the vibration insulator 10 is provided so that the lower annular surface thereof is equivalent to the lower surface of the floor slab 2 or slightly protrudes downward. In addition, the upper annular surface of the vibration insulator 10 is designed to immerse a predetermined amount from the upper surface of the floor slab 2 into the through hole 3 in order to secure a mounting space for the water blocking material 11. An appropriate amount of immersion is about 5 mm to 15 mm.
The water blocking material 11 is entirely covered on the upper annular surface of the vibration insulator 10 so as to block the vibration insulator 10 from being exposed at the upper opening of the through hole 3. Further, the water blocking material 11 is provided in a state of being in contact with the entire outer peripheral surface 7 a of the pipe body 7. Since the upper surface of the water blocking material 11 is generally provided with the branch pipe connecting portion 8 in contact with or very close to the upper surface of the floor slab 2, it is flush with the upper opening of the through hole 3. It is assumed that

As described above, in the drainage collecting pipe 1 shown in FIGS. 1 and 2, the water stop material is formed in accordance with the fact that the upper annular surface of the vibration insulator 10 is immersed about 5 mm to 15 mm from the upper surface of the floor slab 2. The height h of 11 is about 5 mm to 15 mm, and this height h is fitted into the through hole 3.
The water blocking material 11 is formed of a material having heat resistance and smokeless compatibility in a fire resistance test of a building and having vibration absorption. For example, it may be formed of silicone as a raw material (it goes without saying that it is limited to those having heat resistance and smoke-free compatibility).

  For the fire resistance test of a building, for example, a fire resistance test such as a fire prevention section through pipe is adopted. In this test, the drainage collecting pipe W to be tested is fitted into the through hole 3 of the floor slab 2 as shown in FIG. 4, and the lower predetermined length portion of the lower outlet 6W in the drainage collecting pipe W is used. The lower lid 101 is covered with a heat insulating material such as ceramic fiber. Further, a heat insulating plate 102 made of ceramic fiber or the like is attached to the lower surface of the floor slab 2, and an upper heat insulating pipe 103 is connected to the upper inlet portion 5W of the drainage collecting pipe W to insulate the ceramic fiber or the like at a predetermined length. Cover the upper lid 104 with a material.

  Further, the branch pipe 105 is connected to the branch pipe connecting portion 8W of the drainage collecting pipe W, a horizontal cover 106 is covered with a heat insulating material such as ceramic fiber at a predetermined length, and the drainage collecting is performed in the through hole 3 of the floor slab 2. The mortar 13 is packed in the outer peripheral portion of the portion through which the tube W passes. The lower lid 101 is provided at a distance position that is 300 mm or more downward from the lower surface of the floor slab 2, and the upper lid 104 is provided at a distance position that is 800 mm or more upward from the upper surface of the floor slab 2.

In such a state, the temperature detectors 107 are provided at three or more locations in the mortar 103 so as to surround the drainage collecting pipe W, the space below the floor slab 2 is heated, and after 60 minutes, and 120 minutes have passed. The state above the floor slab 2 is observed later. The temperature detector 107 is separated from the drainage collecting pipe W by 10 mm or more.
In the heating, the time passage of the temperature measured by the temperature detection unit 107 is
T = 345 log ₁₀ (8t + 1) +20
It is done so that it becomes a numerical value as expressed by. Here, T is the average furnace temperature, and t is the elapsed time.

In this test, if there is no flame eruption or flame that continues from a crack or the like on the non-heated surface for more than 10 seconds during heating, the floor penetration is defined as having flame barrier performance. Moreover, if it is confirmed that the temperature detection unit 107 on the non-heating surface side does not exceed 200 ° C., the floor penetration portion is defined as having a heat shielding performance. Furthermore, when the amount of smoke (CsV) from the start of heating to 60 minutes is suppressed to 3 [l / m · m ³ ] or less, it shall be adapted to piping that penetrates the “communal area”, If the smoke amount (CsV) for up to 120 minutes is suppressed to 0 [l / m · m ³ ], it shall be adapted to the piping that passes through the “eight divisions”.

In short, in the wastewater collection pipe 1, so the tube body 7 and the branch pipe connecting portion 8 are those having a fire resistance, in which the vibration insulating member 10 also has a fire resistance, shielding the flame resistance and insulation properties, When it is determined in the above test that there is a flame barrier performance, a heat barrier performance, and a flame barrier performance, it is determined that the whole including the water blocking material 11 has heat resistance and smoke-free compatibility. It will be.
The water-stopping material 11 may be formed in a ring shape with a material that can be elastically deformed. When such a water-stopping material that can be elastically deformed is used, the water-stopping material 11 is resistant to elasticity. Then, it may be fitted into the tube main body 7 in an interference fit while being expanded in diameter. Even if it does in this way, a water stop material and the outer peripheral surface of a pipe body can be stuck.

  Alternatively, the water stop material 11 may be mounted by first allowing a material in a fluid state to adhere to the periphery of the tube body 7 and then curing the material to a non-fluid state. In this case, a ring-shaped dam member 20 as shown in FIG. 3 is fitted around the pipe body 7 so that the lower inner peripheral surface of the ring-shaped dam member 20 abuts against the vibration insulator 10, and thus the pipe body. 7 so as to surround the outer peripheral surface 7a of the ring 7 with the ring-shaped weir member 20 over the entire circumference, and to fill the periphery with the water-stopping material 11 that is still in a fluid state, and wait for its hardening. To. Thereby, the water stop material 11 comes to adhere | attach with respect to the outer peripheral surface 7a of the pipe main body 7. FIG.

The ring-shaped weir member 20 illustrated in FIG. 3 is a tying type, and a pair of half-cylinders 21 and 22 each having a shape obtained by dividing a short cylinder into two in the diameter direction.
Lock bolts 28 are screwed into the half cylinders 21 and 22 so as to protrude toward the outer peripheral surface 7a of the pipe body 7, and the ring-shaped dam member 20 is piped by tightening the lock bolts 28. In addition to being able to be positioned so as not to slip off from the main body 7, the circumferential deviation of the gap with respect to the pipe main body 7 can be corrected by adjusting the screwing degree balance. The lock bolt 28 is not always necessary and can be omitted.

  Each of the half cylinders 21 and 22 is provided with flange portions 21a and 22a that come into contact with each other when connected to each other, and bolt through holes 24 and 25 are provided in the flange portions 21a and 22a. . The bolt through hole 24 of the flange portion 21a provided in one half cylinder 21 is a round hole, and the bolt through hole 25 of the flange portion 22a provided in the other half cylinder 22 is a long hole. This is preferable in terms of workability for fastening the.

The ring-shaped weir member 20 may be removed from the pipe body 7 after filling the water-stopping material 11 in a fluidized state and hardening to a non-fluidized state. Therefore, the material of the ring-shaped dam member 20 is not particularly limited as long as it has a strength capable of withstanding the filling pressure of the water blocking material 11.
As shown in FIG. 1 (A), the drainage collecting pipe 1 constructed in this way is inserted into the through hole 3 of the floor slab 2 from above the floor slab 2 so that the lower outlet 6 is first. 1 (B), the connection of the lower side vertical pipe 31 to the lower outlet part 6, the connection of the upper side vertical pipe 32 to the upper outlet part 5, the connection of the branch pipe 33 to the branch pipe connection part 8, etc. Perform piping work. As the vertical pipes 31 and 32 and the branch pipes 33, those having fire resistance such as metal pipes, fire-resistant double-layer pipes, and PVC-lined steel pipes are adopted.

Moreover, the operation | work which stuffs the mortar 13 between each outer peripheral surface of the vibration insulator 10 and the water stop material 11 and the inner peripheral surface 3a of the through-hole 3 is completed, and erection as a drainage piping structure is completed.
In the drainage pipe structure constructed in this way, each drainage collecting pipe 1 has the vibration insulator 10 and the water stop material 11, so that drainage noise (so-called “body propagation sound”) can be prevented and the floor slab 2 can be prevented. Since water leakage prevention effect in the thickness direction can be obtained, and the water-stopping material 11 is formed of a material having heat resistance and smoke-free compatibility and vibration absorption in the fire resistance test of the building. In addition, fire spread prevention and smoke prevention in the event of a fire can be obtained.

Further, since the drainage collecting pipe 1 is already provided with the water-stopping material 11 at the factory shipment stage, there is no need to install the water-stopping material 11 at the piping site, and there is also an advantage that the piping construction work can be performed efficiently.
5 and 6 show another wastewater collecting pipe 1, and the most different from the form the drainage collector pipe 1 drainage collector pipe 1 has been described above in the form status of this, the upper and stopping of the vibration insulator 10 The ring-shaped dam member 20 remains attached to the water material 11 so as to surround the outer peripheral portion thereof.

That is, the drainage collecting pipe 1 is fitted into the through-hole 3 of the floor slab 2 with the ring-shaped dam member 20 mounted, and between the outer peripheral surface of the ring-shaped dam member 20 and the inner peripheral surface 3a of the through-hole 3. The mortar 13 is filled.
In order to obtain such a drainage pipe structure, the ring-shaped dam member 20 needs to be formed of a non-combustible material such as metal and have fire resistance. Moreover, the water stop material 11 employ | adopts what hardens the thing of a fluid state to a non-fluid state. Other configurations and operational effects are substantially the same as the drainage collecting pipe 1 shown in FIGS.

Figure 7 shows another form status of wastewater collecting pipe 1, the drainage collection pipe 1 in the form status of this, the water stopping material 11 outwardly beyond the upper edge of the ring-like projected member 20 total It is formed so as to protrude circumferentially. Therefore, since the boundary part between the outer peripheral side upper edge part of the ring-shaped dam member 20 and the mortar 13 comes to be entirely covered with the water-stopping material 11, the waterproof property is increased accordingly.
Incidentally, the water stopping member 11, FIG. 1, the drainage collector pipe 1 shown in FIG. 2, and 5, similarly to the water discharge collecting pipe 1 shown in FIG. 6, above the portion wound around the strip around the pipe main body 7 It is easy to form by adding the umbrella part 11a which becomes a cross-sectional triangle shape to the upper part.

The present invention is not limited to the above Symbol shape state, and can be changed as appropriate according to the embodiment.
For example, the shape and the like of the pipe body 7 are not limited in detail, and the upper inlet portion 5, the lower outlet portion 6 and the branch pipe connecting portion 8 are a differential type, a receiving type, a mechanical type, and a flange joint. Any type is acceptable.

Covering the vibration insulator 10 with an aluminum glass cloth or an aluminum alloy is not limited. Further, as a state after installation, it is not always necessary to fill the mortar 13 around the vibration insulator 10, and the outer peripheral portion of the vibration insulator 10 is brought into direct contact with the inner peripheral surface of the through hole 3. It is good also as a structure.
As shown in FIG. 8, the ring-shaped dam member 20 has a cylindrical main body portion 29 provided with an open portion at one place in the circumferential direction, and the cylindrical main body portion 29 is elastic in the direction of expanding and reducing the ring diameter. It is good also as a structure which has, and it is good also as a single-ended type in which the flange parts 21a and 22a were provided in the both sides of the open part.

Further, as shown in FIG. 9, similarly to the single-ended type having a cylindrical main body 29 provided with an open portion at one circumferential direction, the cylindrical main body 29 has elasticity in the direction of expanding and reducing the ring diameter. Instead of this, a hinge portion 30 may be provided instead, and the ring diameter may be enlarged or reduced by the hinge portion 30.
The ring-shaped weir member 20 may be structured such that a taper structure in which the opening diameter increases toward the upper part is applied to a part or all of the height direction in order to facilitate filling of the water-stopping material.

Some illustrated the piping procedure with the wastewater collecting pipe is a exploded side view. Is a part exploded side view of a wastewater collecting pipe. Is a perspective view showing an unused state of the-ring-like projected member. It is a perspective view explaining an example of a building fire resistance test (fire resistance test of fireproof section through piping, etc.) carried out in order to judge the heat resistance of the water-stopping material and the suitability of smokelessness. Some explained the piping steps for other forms of wastewater collecting pipe is a exploded side view. Some showing another form of discharge water collecting pipe is a exploded side view. It is a partially exploded side view of a later pipeline for other forms of wastewater collecting pipe. Is a perspective view showing the unused state for the variant status of the ring-like projected member. Is a perspective view showing the unused state for another form status of the ring-like projected member.

DESCRIPTION OF SYMBOLS 1 Drainage pipe 2 Floor slab 3 Through-hole 3a Inner peripheral surface 5 Upper inflow port part 6 Lower outflow port part 7 Pipe main body 7a Outer peripheral surface 8 Branch pipe connection part 10 Vibration insulator 11 Water stop material 13 Mortar 20 Ring-shaped weir member

Claims (3)

In a drainage collecting pipe in which at least one branch pipe connection portion is provided for a pipe body having an upper inlet portion and a lower outlet portion, and the pipe body and the branch pipe connection portion have fire resistance.
Vibration insulator in a state surrounding the fitting portion into the through hole of the floor slabs of the outer peripheral surface of the pipe body is provided, et al is,
The vibration insulator is covered all around the upper annular surface of the vibration insulator in a state of blocking the exposure at the upper opening of the through hole, and a water stop material is in contact with the entire outer periphery of the pipe body. provided it is,
The water stopping material is made form a material and having a vibration absorbing property of being compatible heat and Fukemuri in fire testing of building,
The water blocking material is provided for a portion that fits into a through hole in the pipe body,
A ring-shaped dam member is provided so as to surround at least the entire outer peripheral surface of the portion fitted in the through hole,
The drainage collecting pipe is characterized in that the water blocking material is formed to protrude outwardly over the upper edge of the ring-shaped weir member . The water-stop material is formed between the ring-shaped weir member and the outer peripheral surface of the pipe body that are fitted around while holding the circumferential gap around the pipe body while the material that is cured from the flow state to the non-flow state is in the flow state. The drainage collecting pipe according to claim 1, wherein the drainage collecting pipe is in close contact with the outer peripheral surface of the pipe main body and the inner peripheral surface of the ring-shaped dam member by filling and hardening between the circumferences. The drainage collecting pipe according to claim 1 or 2 , wherein the water-stop material is made of silicone .

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