JP5014450B2 - Drainage piping structure - Google Patents

Description

  The present invention relates to a drainage pipe structure that can be employed 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 drainage pipe structure, a fire occurs due to burning or melting of the drainage pipe structure. An object of the present invention is to provide a drainage pipe structure capable of suppressing cost increase while preventing a flame, smoke, toxic gas, etc. from flowing out from a floor to an upper floor.

A drainage pipe structure according to the present invention includes a fire-resistant standing pipe joint member that is piped through a floor slab of a building, and is formed of a non-fire-resistant resin that is connected to a lower portion of the standing pipe joint member. A pipe member, and a fireproof accessory member attached to a portion where the vertical pipe joint member and the vertical pipe member are connected. The vertical part of the vertical pipe joint member is integrated with a flange on the outer periphery. And is formed as a receiving part into which the pipe end of the vertical pipe member is fitted, and is provided with a packing between the receiving part and the outer peripheral surface of the vertical pipe member, and the vertical pipe member has its pipe end The portion passes through a flange-shaped push ring and is fitted into the receiving portion, and the push ring is fixed to the flange so as to be connected to the vertical pipe joint member . from fixed to fixed points at the bottom of the riser pipe joint member And a pipe end portion of the vertical pipe member connected to the vertical pipe joint member continuous to the connection part and below the connection part. An outer peripheral portion that surrounds the outer peripheral surface of the outer peripheral surface, and the coupling portion serves as the push ring in a state in which a thermally expandable refractory material that expands at a predetermined temperature is held between the standing pipe member and the outer portion. It is fixed .

  In the case of the drainage pipe structure according to the present invention, when a fire or the like occurs in a building equipped with the drainage pipe structure, the drainage pipe system is burned or melted down to the upper floor from the fire occurrence floor. It is possible to suppress the increase in cost while preventing the outflow of flames, soot and toxic gases.

It is a side view of a drain piping structure. It is a side view of an example of the drain pipe system assembled by the drain piping structure. It is an expanded sectional view of the A section of FIG. It is a figure explaining packing for drainage. It is a figure explaining packing for drainage. It is a figure explaining packing for drainage. It is a figure explaining packing for drainage. It is a side view of another drainage piping structure. It is a side view of another drainage piping structure. It is a side view of another drainage piping structure. It is a side view of another drainage piping structure. It is a side view of another drainage piping structure. It is a side view of another drainage piping structure. It is a side view of another drainage piping structure. It is a side view of another drainage piping structure. It is a side view of another drainage piping structure. It is a side view of another drainage piping structure. It is a side view of another drainage piping structure. It is sectional drawing which showed the form at the time of providing a thermally expansible fireproof material in the packing for drainage. It is sectional drawing which showed the form at the time of providing a thermally expansible fireproof material in the packing for drainage. It is sectional drawing which showed the form at the time of providing a thermally expansible fireproof material in the packing for drainage. It is sectional drawing which showed the form at the time of providing a thermally expansible fireproof material in the packing for drainage. It is sectional drawing which showed the form at the time of providing a thermally expansible fireproof material in the packing for drainage. It is sectional drawing which showed the form at the time of providing a thermally expansible fireproof material in the packing for drainage. 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.

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 pipe structure 2, on the premise that the standpipe joint member 10 is provided with fire resistance, in the height region H covered by the standpipe joint member 10 (from the lower end position of the standpipe joint member 10). A heat-expandable refractory material is provided inward of the vertical pipe joint member 10 between the upper and lower positions up to 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 forms of positioning in the height direction where the thermally expandable refractory material is provided and how it is provided (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), and products manufactured by Nichias Co., Ltd. The name “Permoflex (thermally expandable sheet)” (850 ° C., foamed after 30 minutes of heating and expands 4 times or more), and the product name “Heat Mel” (Furukawa Techno Material Co., Ltd.) (expansion start temperature 120 ° C., 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 in which they are nested, an adhesive structure in which they are polymerized later by an adhesive, 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 forms shown in FIGS. 6A and 6B or FIGS. 7A and 7B, the heat-expandable refractory material 30 and the drain pipe packing 35 are disposed apart from each other in the axial direction or are brought into contact with each other. It can be selected as appropriate.
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 fitting between the inner peripheral surface (the inner peripheral surface of the receiving portion) of the lower joint portion 22 and the outer peripheral surface of the pipe end portion (the outer peripheral surface of the inserting portion) of the lower side vertical member 12 in the vertical pipe joint member 10. 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.
10 to 13 show a form 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 employed 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 this thermally expandable refractory material 30, its effects, and the like are substantially the same as in 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 forms in the case where the thermally expandable refractory material 30 is provided on 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 forms in the case of providing the 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, drainage piping structure is not limited to each above-mentioned form, It can change suitably according to the environment installed.

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.

  INDUSTRIAL APPLICABILITY The present invention can be used for drainage piping structures in buildings such as apartment houses and buildings.

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 pipes 36 Packing body 50 Fireproof accessory 51 Standing pipe exterior part 52 Anchor part 53 Connection part (joint part)
54 Connecting part (exterior part)

Claims (1)

A fire-resistant standing pipe joint member that is piped through a floor slab of a building, a standing pipe member that is connected to a lower portion of the standing pipe joint member and is formed of a non-fire-resistant resin, and the standing pipe joint member It is composed of a fireproof accessory member attached to a portion where the vertical pipe member is connected,
The vertical pipe joint member has a lower portion formed as a receiving portion in which a flange is integrated on the outer periphery and the pipe end of the vertical pipe member is fitted.
A packing is provided between the receiving portion and the outer peripheral surface of the vertical pipe member,
The vertical pipe member is connected to the vertical pipe joint member by inserting a pipe end portion through a flange-shaped push ring into the receiving portion and fixing the push ring to the flange. And
The fireproof accessory is
A coupling portion surrounding the outer peripheral surface of the tube end the riser pipe member extends downwardly from the fixed to fixed points at the bottom of the riser tube joint member,
An exterior part surrounding the outer peripheral surface of the pipe end portion of the vertical pipe member connected to the vertical pipe joint member and connected to the vertical pipe joint member below the connection part;
The drainage pipe structure , wherein the coupling portion is fixed to the push ring in a state where a thermally expandable refractory material that expands at a predetermined temperature is held between the standing pipe member and the exterior portion .

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