JP2007056536A - Drain piping structure, drain collecting pipe, and fire-resistant auxiliary member for drain pipe - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress an increase in cost while preventing flames, smoke, toxic gas, etc. from flowing out to an upper story from a fire causing story due to the burning or erosion of a drain pipe system, on the occurrence of a fire etc. in the building equipped with the drain pipe system. <P>SOLUTION: A standpipe joint member 10 which is arranged through a floor slab 7, and a standpipe member 12 which is connected to upper and lower part of the member 10 are provided; the member 10 has heat resistance; and a thermally-expandable fire-resistive material 30 expandable at a predetermined temperature is provided in the height area of the member 10 in at least either of the members 10 and 12. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a drainage pipe structure, a drainage collecting pipe, and a fireproof accessory member for a drainage pipe that can be adopted in constructing a drainage pipe system.

In a building such as an apartment house or a building, a drain pipe system is provided so as to penetrate each floor from the lowest floor to the uppermost floor (see, for example, Patent Document 1). In this type of drainage pipe system, standing pipe joint members such as drainage collecting pipes and straight pipe joints are arranged in a penetrating manner with respect to the floor slab separating each floor, and the standing pipe joint members of each floor are connected to each other such as straight pipes. It has a drainage piping structure that connects with pipe members.
Vertical pipe joint members are known to be made of metal such as cast iron or resin made of hard vinyl chloride, etc. Also, the vertical pipe member is made of metal such as cast iron pipe or steel pipe. There are known resin pipes made of materials or hard vinyl chloride, and fire-resistant double-layer pipes in which the resin pipe is coated with ceramic or (fire-resistant) mortar.
Japanese Patent Laid-Open No. 10-195947

In a building equipped with a drainage pipe system or a drainage pipe structure as an element thereof, when a fire or the like occurs in the downstairs, flames, smoke, or toxic gas flows out to the upper floor through the burnout or erosion site of the drainage pipe system In order to prevent this, it has been conventionally thought that the entire drainage pipe system must have fire resistance.
However, if the entire drainage pipe system is to have fire resistance, it is necessary to make all the standpipe joint members and standpipe members made of non-combustible materials such as metal, resulting in high costs. It was.

  The present invention has been made in view of the above circumstances, and when a fire or the like occurs in a building equipped with a drain pipe system or a drain pipe structure as an element thereof, the drain pipe structure is burned or melted. Drainage pipe structure, drainage collecting pipe and drainage pipe fireproofing that can suppress the increase in cost while preventing fire, smoke, toxic gas, etc. from flowing out from the floor where the fire occurred to the upper floor due to damage It is an object to provide a sex attachment member.

In order to achieve the above object, the present invention has taken the following measures.
That is, the drainage pipe structure according to the present invention includes a standing pipe joint member that is piped through a floor slab in a building, and a standing pipe member that is connected to an upper portion and a lower portion of the standing pipe joint member. And at least the vertical pipe joint member is formed to have fire resistance. A thermally expandable refractory material that expands at a predetermined temperature is provided in at least one of the vertical pipe joint member and the vertical pipe member within a height region of the vertical pipe joint member.
The heat-expandable refractory material may be provided for the vertical pipe joint member, may be provided for the vertical pipe member, or may be provided for both the vertical pipe joint member and the vertical pipe member. In some cases, neither the stand joint member nor the stand member is provided with a heat-expandable refractory material, and these stand pipe joint members and stand members are attached to these predetermined locations when being constructed on a building. Also good. In any case, the height direction area that is effective in providing the thermally expandable refractory material is within the range covered by the vertical pipe joint member (between the vertical position from the lower end position to the upper end position of the vertical pipe joint member). .

Here, the term “thermally expandable refractory material” means that its volume and shape characteristics do not impede the connection between the riser joint member and the riser member below a predetermined temperature, and the standpipe joint. It does not interfere with the drainage flow inside the member or the standpipe member, and expands when a predetermined temperature is exceeded in the event of a fire, etc., and the standpipe is provided at a place where this thermally expandable refractory material is provided. This means that the inside of the joint member is closed (filled). Further, once the predetermined expansion has occurred, the subsequent heating does not cause burning or melting.
Here, the “predetermined temperature” refers to a temperature at which a specific thermal expansion material has thermal expansion, and is a temperature that varies depending on the material of the thermal expansion material. The temperature at which the heat-expandable refractory material that expands is selected depends on the materials of the components that make up the drainage pipes such as the standing pipe members of the building and the drainage collecting pipe, and the concept of fireproof design of the building. Is.

With such a configuration, even when a fire or the like has occurred in a building, the heat-expandable refractory material exceeds a predetermined temperature due to fire heat even if the standing pipe member eventually burns or melts. When heated, the thermally expandable refractory material expands (before the vertical pipe member is completely burned out or melted), thereby closing the inside of the vertical pipe joint member.
Since this vertical joint member itself has fire resistance, it does not burn out or melt, and as a result, the through portion provided in the floor slab for installing this vertical pipe member is the vertical pipe joint. The state closed by the member is maintained.

Because of this, flames, soot, toxic gases, etc. flow out from the fire floor to the upper floor due to burning or melting of the drainage pipe system having these vertical pipe joint members and vertical pipe members. Is prevented.
That is, even if the vertical pipe member is burnt or melted, it is possible to cope with a fire. Therefore, it is not necessary to employ a fire resistant material as the vertical pipe member. Etc.). Therefore, as a whole drainage pipe system constructed using this drainage pipe structure, the cost increase can be suppressed.

The heat-expandable refractory material can be provided on the inner surface of the vertical pipe joint member.
In the case where a receiving portion for fitting the pipe end portion of at least one of the standing pipe members is provided to the standing pipe joint member, the inner peripheral surface of the receiving portion of the standing pipe joint member and the pipe of the standing pipe member A heat-expandable refractory material can be interposed between the outer peripheries of the end portions.
The interposition position of such a heat-expandable refractory material means that it is positioned at the end of the pipe when viewed from the standing pipe member. It can be said that this positioning corresponds to a portion having a relatively low radial strength in the entire length of the standing pipe member. Therefore, when the heat-expandable refractory material starts to expand, the expansion member is easily crushed by the expansion action, and there is an advantage that the internal blockage of the vertical tube joint member becomes quick and reliable.

The vertical pipe joint member may have a main pipe member and a fireproof accessory member attached at a portion where the vertical pipe member is connected to the main pipe member in the vertical direction. In this case, it is assumed that the fireproof accessory member has a standpipe exterior part made of a fireproof material. The standpipe exterior part is configured to surround the outer peripheral part of the standpipe member in a position close to the main pipe member.
And what is necessary is just to interpose a thermally expansible refractory material between the circumference | surroundings made by fitting with the internal peripheral surface of the standpipe exterior part in this fireproof attachment member, and the outer peripheral surface of the pipe end part in a standpipe member.
Also in this case, since the position where the heat-expandable refractory material is interposed is positioned at the end of the tube when viewed from the standing pipe member, when the heat-expandable refractory material starts to expand, the expansion action of the stand-up tube There is an advantage that the member can be easily crushed, and the internal blockage of the riser joint member is quicker and more reliable.

The heat-expandable refractory material is placed below the floor slab in the height area covered by the vertical pipe joint member. ) Is beneficial in terms of making it better.
In addition to the case where the vertical pipe joint member has the main pipe material and the fireproof accessory member as described above, the case where the whole is formed of one main pipe member (that is, the fire pipe attachment member is not provided). If you want to). In either case, the main pipe material can be formed of a metal drainage collecting pipe.

As is well known, the drainage collecting pipe has an upper joint portion for the upper side vertical pipe member and a lower joint portion for the lower side vertical pipe member, and a horizontal joint portion for the horizontal branch pipe is provided between the upper and lower sides thereof. It is what was done.
The drainage collecting pipe according to the present invention is provided with a joint portion that enables connection with a standing pipe member at the upper part and the lower part, and a pipe body is provided between the upper and lower joint parts, and a side branch pipe is provided on the pipe body. It is assumed that a horizontal joint portion that can be connected to each other is provided, and a thermally expandable refractory material that expands at a predetermined temperature is provided on the inner surface thereof.

For example, if at least one of the upper and lower joints is provided with a receiving part for fitting the pipe end of the standing pipe member, a thermally expandable refractory material is provided on the inner peripheral surface of the receiving part. What is necessary is just to provide.
A fireproof accessory member for a drain pipe according to the present invention is a connection portion between a main pipe material for a vertical pipe joint piped through a floor slab in a building and a vertical pipe member connected in the vertical direction of the main pipe material. A standpipe exterior part made of a fireproof material that surrounds the outer peripheral part of the standpipe member at a position close to the main pipe member, and a thermally expandable fireproof material provided in the standpipe exterior part It shall have.

The vertical pipe exterior part may have an anchor part that fixes one end part to the floor slab at a part where the main pipe material penetrates the floor slab.
Further, the standpipe exterior part may have a connecting part to the main pipe member or the standpipe member.

  If the drainage pipe structure and drainage collecting pipe according to the present invention are fireproof accessory members for drainage pipes, when a fire or the like occurs in a building equipped with the drainage pipe system or the drainage pipe structure as an element thereof, Costs can be suppressed while preventing flames, smoke, toxic gases, etc. from flowing out of the fire floor to upper floors due to burning or melting of the pipe system.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The present invention utilizes a standing pipe joint member such as a drainage collecting pipe or a straight pipe joint arranged in a penetrating manner in a floor slab that divides each floor when a fire or the like occurs in a building such as an apartment house or a building. The inside is closed by the expansion action of the heat-expandable refractory material, thereby preventing the drain pipe system from being burnt out or melted down.
For example, as shown in FIG. 2, a drain pipe system 1 provided in a building such as an apartment house or a building connects a drain pipe structure 2 allocated to each level of the building throughout the building, and further Then, it connects as the whole with the extended ventilation pipe 3 connected to the building roof, and connects the underfloor piping or the underground main pipe buried underground through the bend 4 in the lowermost part.

Here, each drainage pipe structure 2 is provided with a standing pipe joint member 10 such as a drainage collecting pipe 9 in a penetrating state with respect to a through-hole 8 provided vertically through a floor slab 7 of a building. A vertical pipe member 12 such as a straight pipe 11 is connected to the upper and lower parts of the joint member 10. A mortar 13 is packed between the outer peripheral portion of the vertical pipe joint member 10 and the inner peripheral surface of the through hole 8, and the vertical pipe joint member 10 is fixed to the floor slab 7. The bend 4 described above is also included as a kind of the standing pipe member 12.
In such a drainage piping structure 2, in the present invention, on the premise that the vertical pipe joint member 10 is provided with fire resistance, the height pipe H (the vertical pipe joint member 10 of the vertical pipe joint member 10) extends. A heat-expandable refractory material is provided inward of the vertical pipe joint member 10 between the lower end position and the upper end position.

In addition, if the standing pipe joint member 10 is in a state where it does not burn out or melt even if it is exposed for a predetermined time under a predetermined condition in a fire site or the like (for example, at 210 ° C. for 2 hours), it has fire resistance. Since it can be said that it is a thing, it is not restricted only to making it from a refractory material (for example, metal, such as cast iron). For example, it may be made of ceramic, or may be formed by coating a raw material made of a non-refractory material such as resin with a fireproof coating material such as ceramic or (fireproof) mortar.
As shown below, there are various embodiments of the positioning in the height direction where the thermally expandable refractory material is provided and how to provide it (structure).

In FIG. 1, the standing pipe joint member 10 is formed in a form constituting one main pipe 20 as a whole, and a metal drainage collecting pipe 9 is adopted as the main pipe 20. The drainage collecting pipe 9 is provided with an upper joint portion 21 that enables connection to the upper riser member 12 and a lower joint portion 22 that enables connection to the lower riser member 12. A pipe body 23 is provided between the joint portions 21 and 22.
The drainage collecting pipe 9 in the illustrated example has a pipe body 23 that is once expanded in diameter as compared with the upper side vertical pipe member 12, and then has a funnel-like downward depression shape toward the lower side vertical pipe member 12. Further, a rectifying means (not shown) such as a swirl vane is provided in the pipe in the lower hollow portion, and the rectifying means generates a swirl flow along the inner wall of the pipe in the drainage flow from above. It is supposed to let you. Further, the pipe body 23 is provided with a horizontal joint portion 25 that can be connected to the horizontal branch pipe 24.

The upper joint portion 21 is formed as a receiving portion into which the insertion port is fitted, corresponding to the fact that the lower tube end portion of the upper side standing tube member 12 is of a straight insertion type. Further, the lower joint portion 22 is formed as an insertion portion that is fitted into the receiving port, corresponding to the fact that the upper tube end portion of the lower side standing tube member 12 is of the receiving port type. Corresponding to the fact that the tube end portion of the horizontal branch pipe 24 is of a straight insertion type, the horizontal joint portion 25 is formed as a receiving portion into which this insertion port is fitted.
And as shown in FIG. 3, the inner peripheral surface (receiving part inner peripheral surface) of the upper joint part 21 in the standing pipe joint member 10 and the pipe end outer peripheral surface (inserting part outer peripheral surface) of the upper side vertical pipe member 12 A thermally expandable refractory material 30 is interposed between the peripheries formed by the fitting.

  The heat-expandable refractory material 30 is formed of, for example, butyl rubber containing graphite, and expands when a predetermined temperature (for example, 200 ° C.) is exceeded during a fire or the like, and the volume after expansion is larger than that before expansion. Therefore, it has a characteristic of reaching 5 to 40 times. As the thermally expandable refractory material 30, for example, trade name “Fibrok” of Sekisui Chemical Co., Ltd. can be used. In addition, the product name “thermally expandable heat-resistant sealing material IP” manufactured by Inaba Denki Sangyo Co., Ltd. (starts expansion at 120 ° C. and expands to 4 times or more in volume), or product manufactured by NICHIAS Corporation The name “Permoflex (thermally expandable sheet)” (850 ° C., foamed after 30 minutes of heating and expands more than 4 times), and the product name “Heat Mel” (Furukawa Techno Material Co., Ltd.) A remarkable expansion temperature of 260 ° C., which expands 4 to 8 times) can be used as the thermal expansion refractory material 9. In addition, the heat-expandable refractory material 9 is not limited to the above, and other various materials can be used.

As described above, the heat-expandable refractory material 9 can use a wide variety of materials having different reaction temperatures and expansion coefficients. Therefore, various conditions such as the reaction temperature and the pipe diameter required according to the construction place in the building are set. You can select and use the most suitable one.
The thermally expandable refractory material 30 is formed in a ring shape or a cylindrical shape corresponding to the above-described circumference, and as shown in FIG. 3A, the inner portion of the upper joint portion 21 in the vertical pipe joint member 10 is formed. A storage space 31 is provided on the peripheral surface (inner peripheral surface of the receiving port) side and stored in an internally fitted state, or as shown in FIG. 3B, the outer peripheral surface of the tube end portion of the upper side standing tube member 12 The storage space 32 is provided on the (outer opening outer peripheral surface) side and is stored in an externally fitted state there.

The heat-expandable refractory material 30 shown in the figure is kneaded and integrated with a packing material that produces water stoppage (appropriate elasticity) when it is below a predetermined temperature. It has a ring shape or a cylindrical shape.
Needless to say, the thermally expandable refractory material 30 maintains a volume and shape that do not hinder the connection between the vertical pipe joint member 10 and the vertical pipe member 12 when the temperature is lower than a predetermined temperature. The shape is set to be sufficient to close the inside of the standing pipe joint member 10 (upper joint portion 21) when the thermally expandable refractory material 30 expands.

In a building including the drainage pipe structure 2 or the drainage pipe system 1 having such a configuration, even if a fire or the like occurs, the drainage pipe structure 2 or the drainage pipe system 1 is caused by burning or melting. Thus, it is possible to prevent flames, smoke, toxic gases, etc. from flowing out from the fire floor to upper floors.
That is, assuming that a fire has occurred under the floor slab 7, the lower side vertical member 12 is burnt out or melted, or the lower side vertical member 12 is connected to the lower joint portion 22 of the vertical joint member 10. Ordinary drain pipe packings (made of rubber or the like which may be burnt or melted) provided in the part may burn or melt, and flame, smoke, toxic gas, etc. may be generated inside the vertical pipe joint member 10. Suppose you get in. In some cases, the vertical pipe joint member 10 itself may receive a fire heat and become high temperature.

If the upper side vertical pipe member 12 is burnt out or melted down due to these reasons, a thermally expandable refractory material interposed between the upper side vertical pipe member 12 and the upper joint portion 21 of the vertical pipe joint member 10. 30 is heated in the same manner, and the thermally expandable refractory material 30 expands and closes the inside of the upper joint portion 21 when a predetermined temperature is exceeded.
In addition, assuming that a fire has occurred above the floor slab 7, even when the upper side vertical pipe member 12 is directly burned or melted by this fire heat, the thermally expandable refractory material 30 is predetermined as described above. When the temperature of the upper joint portion 21 is exceeded, the upper joint portion 21 is expanded and closed.

In short, at the stage where the upper side vertical pipe member 12 is burnt or melted, the upper joint portion 21 of the vertical pipe joint member 10 is already closed by the expanded thermal expansion refractory material 30, and flame, soot, toxic gas, etc. Will be blocked.
Since the vertical pipe joint member 10 itself has fire resistance, a fire may occur below the floor slab 7 or above, but neither burns nor melts. As a result, it is formed on the floor slab 7. The through-hole 8 is maintained in the closed state by the vertical pipe joint member 10 and the mortar 13.

For this reason, it is possible to prevent the flame, smoke, toxic gas, etc. from flowing out from the fire floor to the upper floor due to the burning or melting of the drain pipe structure 2 or the drain pipe system 1. In addition, since it is possible to prevent fresh air from being sucked from below the floor slab 7 against a fire that has occurred on the floor slab 7, there is also an effect that the expansion of the fire can be suppressed to a minimum.
When the horizontal joint portion 25 is provided on the standing pipe joint member 10, the inner peripheral surface of the horizontal joint portion 25 (the inner peripheral surface of the receiving port) and the outer peripheral surface of the pipe end of the horizontal branch pipe 24 (insertion). In the same manner as described above, the heat-expandable refractory material 30 can be interposed between the circumferences formed by fitting with the outer peripheral surface of the mouth portion, and it is preferable to provide them.

That is, even when the side branch pipe 24 is burnt or melted in this way, the inside of the side joint portion 25 of the vertical pipe joint member 10 is closed by the heat-expandable refractory material 30, and again, flame, smoke, Outflow of poisonous gas, etc., inhalation of fresh air, etc. will be prevented.
As shown in FIG. 4A, the heat-expandable refractory material 30 is polymerized on the inner peripheral surface side of a packing body 36 having a ring shape or a cylindrical shape as a basic shape of the drain pipe packing 35. Alternatively, as shown in FIG. 4B, polymerization may be performed on the outer peripheral surface side of the packing body 36.

As shown in FIGS. 4A and 4B, a storage space 31 is provided on the inner peripheral surface (inner peripheral surface) side of the upper joint portion 21 of the vertical pipe joint member 10 and is fitted therein. As shown in FIGS. 5 (A) and 5 (B), a storage space 32 is provided on the pipe end portion outer peripheral surface (insertion portion outer peripheral surface) side of the upper side standing tube member 12, and the storage space 32 is provided there. You may store in an external fitting state.
In any case, the thermally expandable refractory material 30 and the packing body 36 may have a double cylinder structure that is nested, an adhesive structure that is polymerized later by an adhesive, or an additive structure. It is good also as an integrated structure polymerized from the manufacture stage by sulfur adhesion etc.

Furthermore, as shown in FIGS. 6A and 6B, the thermally expandable refractory material 30 may be arranged in the axial direction separately from the drain pipe packing 35. Also in this case, as shown in FIGS. 6A and 6B, a storage space 31 is provided on the inner peripheral surface (inner peripheral surface) side of the upper joint portion 21 of the standing pipe joint member 10 and is fitted therein. 7A or 7B, a storage space 32 is provided on the pipe end portion outer peripheral surface (insertion portion outer peripheral surface) side of the upper side standing tube member 12 as shown in FIGS. You may store in an external fitting state there.
In each of the embodiments shown in FIGS. 6A and 6B or FIGS. 7A and 7B, the heat-expandable refractory material 30 and the drain pipe packing 35 are arranged apart from each other in the axial direction or contacted. It is possible to appropriately select whether to arrange them.

As shown in FIG. 8, the drainage collecting pipe 9 employed as the main pipe material 20 of the vertical pipe joint member 10 is a mechanical type receiving type in which the lower joint portion 22 has a flange 40 and a push ring 41. Although there are some, this type of lower joint portion 22 is an insertion type in which the upper tube end portion of the lower side standing tube member 12 is straight.
Therefore, in this case, the inner peripheral surface (the inner peripheral surface of the receiving portion) of the lower joint portion 21 in the vertical pipe joint member 10 and the outer peripheral surface of the pipe end portion (the outer peripheral surface of the insertion portion) of the lower side vertical member 12 are fitted. What is necessary is just to interpose the heat-expandable refractory material 30 between the circumference | surroundings made by a combination. In addition, the interposition structure of this heat-expandable refractory material 30 is not limited to the case where the lower joint portion 22 is a mechanical type receiving type, but is formed as a simple type receiving type as shown in FIG. Also effective.

The interposition position of the heat-expandable refractory material 30 shown in FIGS. 8 and 9 is necessarily higher than the floor slab 7 in the height region H (see FIG. 2) covered by the vertical pipe joint member 10. Arranged downward. Therefore, it can be said that it is beneficial in that the fire heat is sensed immediately from the fire that has occurred downstairs, and the rapidity (responsiveness) of expanding the thermally expandable refractory material 30 is obtained.
FIGS. 10 to 13 show an embodiment in which the position where the heat-expandable refractory material 30 is provided on the vertical pipe joint member 10 is the inner surface of the drainage collecting pipe 9 adopted as the main pipe material 20.
That is, in FIG. 10, the heat-expandable refractory material 30 is provided on the inner peripheral surface of the pipe body 23 at the enlarged diameter portion (the portion where the horizontal joint portion 25 is provided) of the pipe body 23 of the drainage collecting pipe 9. Of course, a portion communicating with the horizontal joint portion 25 is opened.

In FIG. 11, in the pipe main body 23 of the drainage collecting pipe 9, the diameter-expanded portion (the portion where the transverse joint portion 25 is provided) and the lower concave portion (the swirling flow is generated in the drainage flow). The thermally expandable refractory material 30 is provided on the inner peripheral surface of the tube main body 23 at the upper and lower portions.
In FIG. 12, the thermally expandable refractory material 30 is provided on the inner peripheral surface of the pipe main body 23 at a portion that has a lower concavity shape in the pipe main body 23 of the drainage collecting pipe 9 (a part that generates a swirling flow in the drainage flow). It is. When rectifying means such as swirl vanes are provided in this portion, the thermally expandable refractory material 30 is prevented from interfering with the action of the rectifying means.

In FIG. 13, when the lower joint portion 22 of the drainage collecting pipe 9 is an insertion type, a thermally expandable refractory material 30 is provided on the inner peripheral surface of the lower joint portion 22.
10 to 13, it is assumed that the thermally expandable refractory material 30 has a shape or mounting structure that maintains a shape that does not obstruct the flow of drainage when it is below a predetermined temperature.
The heat-expandable refractory material 30 is not limited to the case where it is provided directly on the inner surface of the drainage collecting pipe 9, but may be anywhere within the height region H covered by the vertical pipe joint member 10, as shown in FIGS. May be.

That is, in FIG. 14, the upper joint portion 21 of the drainage collecting pipe 9 is a receiving type, and the lower pipe end portion of the upper side vertical pipe member 12 is an insertion type, and the lower pipe of the upper side vertical pipe member 12 is A heat-expandable refractory material 30 is provided on the inner peripheral surface of the end portion so as to include a portion fitted into the upper joint portion 21 of the drainage collecting pipe 9.
Further, the horizontal joint portion 25 is a receiving type, and the pipe end portion of the horizontal branch pipe 24 is an insertion type. The horizontal joint portion of the drainage collecting pipe 9 is connected to the inner peripheral surface of the pipe end portion of the horizontal branch pipe 24. The heat-expandable refractory material 30 is provided so as to include a portion fitted in the inner wall 25.

In FIG. 15, the lower joint portion 22 of the drainage collecting pipe 9 is a mechanical type or other receiving type, and the upper pipe end portion of the lower side standing pipe member 12 is an insertion type, and this lower side standing pipe member A heat-expandable refractory material 30 is provided on the inner peripheral surface of the upper pipe end portion of 12 so as to include a portion fitted into the lower joint portion 22 of the drainage collecting pipe 9.
The vertical pipe joint member 10 can have not only the main pipe material 20 (the drainage collecting pipe 9 and the like) but also a fireproof accessory member 50 as shown in FIGS. 16 to 18. The refractory attachment member 50 is made of metal such as iron (made of refractory material), and is attached to a portion where the vertical pipe member 12 is connected to the upper or lower portion of the main pipe member 20. Further, the fireproof accessory member 50 has a standpipe exterior portion 51 that is positioned close to the main pipe member 20 and surrounds the outer peripheral portion of the standpipe member 12.

In the riser joint member 10 having such a fireproof accessory member 50, the inner peripheral surface of the standpipe exterior portion 51 in the fireproof accessory member 50 and the outer peripheral surface of the pipe end portion in the lower side standup member 12 are fitted. A heat-expandable refractory material 30 is interposed between the circumferences formed by the above.
The material characteristics of the thermally expandable refractory material 30 and the effects thereof are substantially the same as those of the embodiments described with reference to FIGS.
The standing pipe exterior part 51 of the fireproof attachment member 50 shown in FIG. 16 has a lower joint part 22 of the main pipe material 20 (drainage collecting pipe 9) as an insertion type, and an upper pipe end part of the lower side standing pipe member 12 receives it. Along with the mouth type, it surrounds the upper pipe end (receiving port) of the lower side standing pipe member 12 and further to the pipe body side (that is, the position where the lower joint part 22 of the main pipe material 20 does not reach). It is formed in a cylindrical shape that extends.

And the anchor part which fixes one end part to the floor slab 7 side (mortar 13) in the upper part of the standing pipe exterior part 51 in the part (inside the through-hole 8 of the floor slab 7) where the main pipe material 20 penetrates the floor slab 7 52 is provided. The anchor portion 52 may be formed in a cylindrical shape, or may be formed as a plurality of legs or one leg.
The standing pipe exterior portion 51 of the fireproof accessory member 50 shown in FIG. 17 has a lower joint portion 22 of the main pipe material 20 (drainage collecting pipe 9), which is of a mechanical type. 22 has a connecting portion 53 that engages with the push wheel 41 of the main pipe member 20. The connecting portion 53 is formed in a cylindrical shape surrounding the outer peripheral surface of the pipe end portion of the lower side standing pipe member 12.

  The standing pipe exterior portion 51 of the fireproof accessory member 50 shown in FIG. 18 is such that the lower joint portion 22 of the main pipe material 20 (drainage collecting pipe 9) is a receiving type with a simple structure (other than the mechanical type). Along with this, there is a connecting portion 54 that is fixed near the upper pipe end of the lower side standing pipe member 12, thereby maintaining an approaching state with the main pipe material 20. The upper part of the refractory accessory member 50 is fixed to the lower joint portion 22 of the main pipe member 20 (drainage collecting pipe 9) by fixing means 55 such as bolts. The fixing means 55 is not limited to a bolt, and various types such as an adhesive tape and an adhesive can be employed.

FIGS. 19 to 24 show various embodiments in the case where the heat-expandable refractory material 30 is provided in the drain pipe packing 35 itself.
The drain pipe packing 35 shown in FIG. 19 is formed by kneading and integrating the thermally expandable refractory material 30 and a packing material that generates water-stopping (appropriate elasticity), and is suitable for the usage described in FIG. It is.
In the packing 35 for drainage shown in FIG. 20, the heat-expandable refractory material 30 is polymerized integrally or separately on the inner peripheral surface side of the packing body 36 made of a packing material having a ring shape or a cylindrical shape. It is suitable for the usage described in FIG. 4 (A) or FIG. 5 (A).

In the drainage packing 35 shown in FIG. 21, the heat-expandable refractory material 30 is integrally or separately polymerized on the outer peripheral surface side of the packing body 36 made of a packing material having a ring shape or a cylindrical shape. This is suitable for the usage described in FIG. 4B or FIG.
The drainage packing 35 shown in FIG. 22 has a ring-shaped or cylindrical packing main body 36 made of a packing material, and a thermally expandable refractory material 30 is integrally or separately connected to at least one of its axial directions. Further, in the draining packing 35 shown in FIG. 23, a thermally expandable refractory material 30 is integrally connected to at least one of the axial direction of the packing body 36 formed short. Any of them can be used in a manner similar to that described in FIG.

The drainage packing 35 shown in FIG. 24 has a thermally expandable refractory material 30 inserted in a peripheral wall of a packing body 36 made of a packing material having a ring shape or a cylindrical shape.
In addition, although illustration is abbreviate | omitted, it can also be set as the coating structure which forms the membrane | film | coat by the heat-expandable refractory material 30 with respect to the outer surface (outer peripheral surface and inner peripheral surface) of the packing main body 36.
FIGS. 25 to 29 show that when the vertical pipe member 12 has non-fire resistance (in the case of resin made of hard vinyl chloride or the like), the thermal expansion refractory material 30 is attached to the vertical pipe member 12 itself. Various embodiments in the case of providing the above are shown.

The standing pipe member 12 shown in FIGS. 25 (A) and 25 (B) is a straight pipe, and FIG. 25 (A) is provided with a thermally expandable refractory material 30 in a state of making a round of the outer peripheral surface of one end thereof. In FIG. 5B, the thermally expandable refractory material 30 is provided in a state of making a round of the inner peripheral surface of one end thereof. In either case, the portion provided with the heat-expandable refractory material 30 is used for connection with the vertical pipe joint member 10.
Note that the heat-expandable refractory material 30 may be provided so as to be scattered in the circumferential direction without making a round on the outer peripheral surface or the inner peripheral surface of the riser member 12. Moreover, you may provide over the full length direction with respect to the outer peripheral surface and inner peripheral surface of the standing tube member 12. FIG.

The standing tube member 12 shown in FIGS. 26 (A) and 26 (B) is the same as that shown in FIG. 25 except that one end is formed as a receiving port type. Needless to say, the portion provided with the heat-expandable refractory material 30 is used for connection with the vertical pipe joint member 10.
The standing pipe member 12 shown in FIG. 27 is also formed as a receiving port at one end, but the thermally expandable refractory material 30 is provided on the inner peripheral surface of the receiving port.
In the standing pipe member 12 shown in FIG. 28, the pipe body 60 is made of a resin, but is formed as a fire-resistant double-layer pipe around which is coated with a fire-resistant coating layer 61 such as ceramic or (fire-resistant) mortar. One end of the tube body 60 is formed as a receiving type. The heat-expandable refractory material 30 is formed such that a stepped recess 62 is formed in the fireproof coating layer 61 at the end opposite to the receiving port, and the fireproof coating layer 61 and the outer peripheral surface are flush with each other. It is provided.

Needless to say, the portion provided with the heat-expandable refractory material 30 is used for connection to the vertical pipe joint member 10. Although illustration is omitted, even in this type of fireproof double-layered tube, it is possible to have a structure in which the thermally expandable refractory material 30 is provided on the inner peripheral surface of the receiving port of the tube main body 60. The receiving side is used for connection with the vertical pipe joint member 10.
The standing pipe member 12 shown in FIG. 29 is formed as a receptacle type at one end, and is provided with a cylindrical fireproof accessory member 50 that surrounds the receptacle.

The fireproof accessory member 50 has substantially the same structure as that described with reference to FIGS. 16 to 18 and has the same function and effect, and surrounds the outer peripheral portion of the standing pipe member 12. A heat-expandable refractory material 30 is provided inside the vertical pipe exterior portion 51.
By the way, this invention is not limited to each above-mentioned embodiment, It can change suitably according to embodiment.
For example, since the material and structure for making the pipe joint member 10 fire resistant is not limited, it may be made of ceramic, ceramic, or (fireproof) mortar in addition to the case of being made of metal such as cast iron. It was explained that a covering structure such as the above may be used. The same applies to the fireproof attachment member 50.

In the vertical pipe joint member 10, the main pipe material 20 may be a straight pipe joint or the like. The upper joint portion 21, the lower joint portion 22, and the lateral joint portion 25 may be flange joints.
The standing pipe member 12 includes a bend pipe and a T-shaped pipe.
Naturally, the contents of the above-described embodiments can be appropriately combined.

1 is a side view showing a first embodiment according to the present invention. It is the side view which showed an example of the drain pipe system by which this invention is implemented. It is sectional drawing which expanded and showed the A section of FIG. It is explanatory drawing which concerns on the packing for drainage of this invention. It is explanatory drawing which concerns on the packing for drainage of this invention. It is explanatory drawing which concerns on the packing for drainage of this invention. It is explanatory drawing which concerns on the packing for drainage of this invention. It is the side view which showed 2nd Embodiment based on this invention. It is the side view which showed 3rd Embodiment which concerns on this invention. It is the side view which showed 4th Embodiment concerning this invention. It is the side view which showed 5th Embodiment concerning this invention. It is the side view which showed 6th Embodiment concerning this invention. It is the side view which showed 7th Embodiment concerning this invention. It is the side view which showed 8th Embodiment concerning this invention. It is the side view which showed 9th Embodiment based on this invention. It is the side view which showed 10th Embodiment based on this invention. It is the side view which showed 11th Embodiment based on this invention. It is the side view which showed 12th Embodiment based on this invention. It is sectional drawing which showed embodiment at the time of providing a thermally expansible refractory material in the packing for drainage which concerns on this invention. It is sectional drawing which showed embodiment at the time of providing a thermally expansible refractory material in the packing for drainage which concerns on this invention. It is sectional drawing which showed embodiment at the time of providing a thermally expansible refractory material in the packing for drainage which concerns on this invention. It is sectional drawing which showed embodiment at the time of providing a thermally expansible refractory material in the packing for drainage which concerns on this invention. It is sectional drawing which showed embodiment at the time of providing a thermally expansible refractory material in the packing for drainage which concerns on this invention. It is sectional drawing which showed embodiment at the time of providing a thermally expansible refractory material in the packing for drainage which concerns on this invention. It is a side view at the time of providing a thermally expansible fireproof material in a drain pipe. It is a side view at the time of providing a thermally expansible fireproof material in a drain pipe. It is a side view at the time of providing a thermally expansible fireproof material in a drain pipe. It is a side view at the time of providing a thermally expansible fireproof material in a drain pipe. It is a side view at the time of providing a thermally expansible fireproof material in a drain pipe.

Explanation of symbols

2 Drainage pipe structure 7 Floor slab 9 Drainage collecting pipe 10 Vertical pipe joint member 12 Vertical pipe member 20 Main pipe material 21 Upper joint part 22 Lower joint part 23 Pipe body 24 Side branch pipe 25 Horizontal joint part 30 Thermal expansion refractory material 35 Drainage Packing for pipe 36 Packing body 50 Fireproof accessory member 51 Standing pipe exterior part 52 Anchor part 53 Connecting part 54 Connecting part H Height range where the vertical pipe joint member reaches

Claims (12)

  A standing pipe joint member (10) piped through the floor slab (7) in the building, and a standing pipe member (12) connected to the upper and lower parts of the standing pipe joint member (10). At least the vertical pipe joint member (10) is formed to have fire resistance, and the vertical pipe joint member (10) is at least one of the vertical pipe joint member (10) and the vertical pipe member (12). 10) A drainage pipe structure characterized in that a heat-expandable refractory material (30) that expands at a predetermined temperature is provided in the height region (H).   The drain piping structure according to claim 1, wherein the thermally expandable refractory material (30) is provided on an inner surface of the vertical pipe joint member (10).   The vertical pipe joint member (10) is provided with a receiving portion into which a pipe end portion of at least one vertical pipe member (12) is fitted, and an inner peripheral surface of the receiving portion of the vertical pipe joint member (10). The drainage pipe structure according to claim 1, wherein the thermally expansive refractory material (30) is interposed between the periphery of the pipe end portion and the outer peripheral surface of the pipe end portion of the vertical pipe member (12). .   The vertical pipe joint member (10) includes a main pipe member (20) and a fireproof attachment member (attached at a portion where the vertical pipe member (12) is connected to the main pipe member (20) in the vertical direction. 50) and the fireproof accessory member (50) includes a standpipe exterior portion made of a fireproof material that surrounds the outer periphery of the standpipe member (12) in a position close to the main pipe member (20). (51) is provided, and the gap formed by fitting the inner peripheral surface of the standpipe exterior part (51) of these fireproof accessory members (50) and the outer peripheral surface of the pipe end part of the standpipe member (12). The drain piping structure according to claim 1, wherein the thermally expandable refractory material (30) is interposed.   The heat-expandable refractory material (30) is provided in an arrangement below the floor slab (7) in the height region (H) covered by the vertical pipe joint member (10). The drainage piping structure according to any one of claims 1 to 4.   The drain pipe structure according to any one of claims 1 to 5, wherein the standing pipe member (12) is formed to have non-fire resistance.   The vertical pipe joint member (10) has a lateral branch between an upper joint portion (21) for the upper side vertical pipe member (12) and a lower joint portion (22) for the lower side vertical pipe member (12). It has a metal drainage collecting pipe (9) provided with a transverse joint part (25) for the pipe (24), and the standing pipe member (12) is a resin pipe. The drainage pipe structure according to any one of claims 1 to 5.   The upper and lower portions are provided with joint portions (21, 22) that enable connection with the standing pipe member (12), and a pipe body (23) is provided between the upper and lower joint portions (21, 22). In the drainage collecting pipe in which the pipe body (23) is provided with a transverse joint part (25) that enables connection with the side branch pipe (24), a thermally expandable refractory material (expanded at a predetermined temperature) 30) A drainage collecting pipe characterized by being provided.   The upper and lower portions are provided with joint portions (21, 22) that enable connection with the standing pipe member (12), and a pipe body (23) is provided between the upper and lower joint portions (21, 22). In the drainage collecting pipe in which the pipe body (23) is provided with a transverse joint part (25) that enables connection to the lateral branch pipe (24), at least one of the upper and lower joint parts (21, 22) A receiving part for fitting the pipe end of the vertical pipe member (12) is provided, and a thermally expandable refractory material (30) that expands at a predetermined temperature is provided on the inner peripheral surface of the receiving part. Drainage collecting pipe characterized by that.   A connecting portion between a main pipe member (20) for a vertical joint piped through the floor slab (7) in the building and a vertical pipe member (12) connected in the vertical direction of the main pipe member (20) A drainage pipe fireproof accessory member (50) attached to the vertical pipe exterior portion (51) made of a fireproof material surrounding the outer peripheral portion of the vertical pipe member (12) in a position close to the main pipe material (20). ) And a thermally expandable refractory material (30) that is provided between the inner peripheral surface of the vertical pipe exterior part (51) and the outer peripheral surface of the vertical pipe member (12) and that expands at a predetermined temperature. A fireproof accessory for drainage pipes, characterized by having:   The vertical pipe exterior part (51) has an anchor part (52) for fixing one end part to the floor slab (7) side at a part where the main pipe material (20) penetrates the floor slab (7). The fireproof accessory for a drain pipe according to claim 10, characterized in that   The said pipe | tube exterior part (51) has the connection part (53) (54) with respect to a main pipe material (20) or a pipe | tube member (12), The fire resistance for drain pipes of Claim 10 characterized by the above-mentioned. Attached material.

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