JP2023169220A - Drainage piping member - Google Patents

Abstract

To provide a drainage piping member capable of appropriately closing a through-hole of a floor slab in fire disaster.SOLUTION: A drainage collective pipe 10 includes: a synthetic resin pipe body 12 having a through-pipe part 12b, an upper pipe part 12a, and an upper pipe connection part having a rubber ring socket shape; a thermal expansion part 30 provided in the through-pipe part; a cylindrical vibration isolation part 32 provided on an outer peripheral face of the through-pipe part so as to cover the thermal expansion part; and a cylindrical upper sound insulation cover 70 provided on an outer peripheral face of the upper pipe part. The vibration isolation part is formed by cylindrically sewing predetermined-shape mat members which are formed by interlocking predetermined-length first inorganic fibers each having a heatproof temperature of 800°C or higher, with sewing threads which are formed by second inorganic fibers each having a heatproof temperature of 800°C or lower.SELECTED DRAWING: Figure 5

Description

The present invention relates to a drainage piping member, and particularly to a drainage piping member used for, for example, a drainage piping that penetrates a floor slab of a building.

An example of a conventional drainage piping member is disclosed in Patent Document 1. In the drain pipe joint disclosed in Patent Document 1, the first joint component constituting a part of the floor slab penetrating portion is a fire-resistant thermal expansion layer comprising at least a tubular fire-resistant expansion layer made of a fire-resistant thermal expansion resin composition. A sound insulating cover is provided to surround the joint portion of the second joint component, which is made of a plastic pipe and forms the floor slab penetration portion together with the second joint component. This sound insulating cover is formed by winding the sound insulating resin sheet around the joint body so that the direction of thermal contraction of the sound insulating resin sheet is parallel to the central axis of the floor slab penetration portion. Further, the sound-insulating resin sheet includes a surface layer made of a sheet-like body made of a soft vinyl chloride resin, and a back layer made of a nonwoven fabric made of a synthetic resin such as polyester. In the technology of Patent Document 1, in the event of a fire, the fire-resistant expansion layer (thermally expandable graphite) thermally expands and closes the through holes in the floor slab, allowing heat, flames, smoke, etc. to flow from the lower floor to the upper floor. prevent movement to.
Japanese Patent Application Publication No. 2011-247372

However, in the technology of Patent Document 1, the thermally expandable graphite that has been thermally expanded during a fire is not properly retained in the through holes of the floor slab, and a part of the thermally expandable graphite falls together with the sound insulation cover, causing the floor to There is a possibility that the through holes in the slab cannot be properly closed. Therefore, in order to properly close the through holes in the floor slab, it is necessary to increase the amount of thermally expandable graphite used, but this increases the cost of the components.

Therefore, the main object of this invention is to provide a new drainage piping member.

Another object of the present invention is to provide a drainage piping member that can appropriately close through holes in a floor slab in the event of a fire.

The first invention is a drainage piping member used for a drainage piping that penetrates a floor slab of a building, the pipe body being made of a synthetic resin and having a through-pipe portion that is a portion disposed in a through-hole of the floor slab; It includes a thermal expansion section provided in the through-tube section, and a cylindrical vibration insulating section provided on the outer peripheral surface of the through-tube section so as to cover the thermal expansion section, and the vibration insulating section has a predetermined heat-resistant temperature of 800 degrees Celsius or higher. It is formed by sewing a mat member of a predetermined shape formed by intertwining lengths of first inorganic fibers into a tubular shape with a sewing thread made of second inorganic fibers having a heat resistance temperature of 800° C. or more. The main body has an upper tube connection portion in the shape of a rubber ring socket formed at the upper end, and an upper tube portion that is a portion disposed above the through hole, and the upper tube portion includes the upper tube connection portion. The drainage piping member further includes a cylindrical upper sound insulating cover provided on the outer peripheral surface of the drainage piping member.

In the first invention, the drainage piping member includes a pipe body made of synthetic resin. The pipe body consists of a through-pipe part that is placed inside the through-hole of the floor slab, an upper pipe connection part that is shaped like a rubber ring socket formed at the upper end, and a part that is placed above the through-hole. It has an upper tube part. In addition, the drainage piping member includes a thermal expansion part provided in the through pipe part of the pipe body, a cylindrical vibration insulating part provided on the outer peripheral surface of the through pipe part so as to cover the thermal expansion part, and an upper pipe connection part. and a cylindrical upper sound insulating cover provided on the outer peripheral surface of the upper tube section. The vibration insulation part includes a mat member having a predetermined shape formed by intertwining first inorganic fibers of a predetermined length with a heat resistance temperature of 800°C or more, and a sewing thread formed of a second inorganic fiber with a heat resistance temperature of 800°C or more. It is formed by sewing it into a cylindrical shape. The vibration insulating section formed of inorganic fibers with a heat resistance temperature of 800° C. or higher can maintain its shape even in the event of a fire. Further, the vibration insulating section has a porous structure, and countless irregularities are formed on its inner circumferential surface. For this reason, the thermally expanded part that thermally expanded during a fire gets entangled with the unevenness formed on the inner circumferential surface of the vibration insulating part, and its anchor effect makes it difficult for it to fall from inside the vibration insulating part. Therefore, the thermally expanded part is properly held within the through hole by the vibration insulator.

According to the first aspect of the invention, the thermal expansion part that thermally expands during a fire is properly held in the through hole by the vibration insulating part, so the through hole of the floor slab can be closed without increasing the amount of thermally expandable graphite used. Can be properly occluded. In addition, since the upper sound insulating cover is provided, drainage noise can be appropriately prevented.

The second invention is a drainage piping member used for a drainage piping that penetrates a floor slab of a building, and the pipe body is made of a synthetic resin and has a through-pipe portion that is a portion disposed in a through-hole of the floor slab. It includes a thermal expansion section provided in the through-tube section, and a cylindrical vibration insulating section provided on the outer peripheral surface of the through-tube section so as to cover the thermal expansion section, and the vibration insulating section has a predetermined heat-resistant temperature of 800 degrees Celsius or higher. It is formed by sewing a mat member of a predetermined shape formed by intertwining lengths of first inorganic fibers into a tubular shape with a sewing thread made of second inorganic fibers having a heat resistance temperature of 800° C. or more. The main body has an upper pipe connection part in the shape of a rubber ring socket formed at the upper end, and the thermal expansion part is a drainage piping member formed in a ring shape and attached to the outer peripheral surface of the through pipe part. be.

In the second invention, the drainage piping member includes a pipe body made of synthetic resin. The tube body has a through tube portion that is a portion disposed in the through hole of the floor slab, and an upper tube connection portion in the shape of a rubber ring socket formed at the upper end portion. The drainage piping member also includes a ring-shaped thermal expansion section provided in the through-pipe section of the pipe body, and a cylindrical vibration-insulating section provided on the outer peripheral surface of the through-tube section so as to cover the thermal expansion section. The vibration insulation part includes a mat member having a predetermined shape formed by intertwining first inorganic fibers of a predetermined length with a heat resistance temperature of 800°C or more, and a sewing thread formed of a second inorganic fiber with a heat resistance temperature of 800°C or more. It is formed by sewing it into a cylindrical shape. The vibration insulating section formed of inorganic fibers with a heat resistance temperature of 800° C. or higher can maintain its shape even in the event of a fire. Further, the vibration insulating section has a porous structure, and countless irregularities are formed on its inner circumferential surface. For this reason, the thermally expanded part that thermally expanded during a fire gets entangled with the unevenness formed on the inner circumferential surface of the vibration insulating part, and its anchor effect makes it difficult for it to fall from inside the vibration insulating part. Therefore, the thermally expanded part is properly held within the through hole by the vibration insulator.

According to the second invention, the thermal expansion part that thermally expands during a fire is appropriately held in the through hole by the vibration insulating part, so the through hole of the floor slab can be closed without increasing the amount of thermally expandable graphite used. Can be properly occluded.

A third invention is dependent on the first or second invention, wherein the first inorganic fiber is a silica fiber, the vibration insulating part has a thickness of 8 mm or more and 15 mm or less, and a density of 100 kg/m ³ or more. 300kg/ ^m3 or less.

According to the third invention, the vibration insulating section can be manufactured at low cost.

A fourth invention is dependent on any one of the first to third inventions, wherein the tube body has an annular protrusion formed on the outer peripheral surface, and the lower end of the vibration insulating part is engaged by the protrusion. will be stopped.

A fifth invention is dependent on any one of the first to fourth inventions, in which the tube main body has a lower tube connection portion in the shape of a spigot formed at the lower end portion.

According to this invention, the thermal expansion part that thermally expands during a fire is properly held in the through hole by the vibration insulating part, so the through hole of the floor slab can be properly closed without increasing the amount of thermally expandable graphite used. Can be blocked.

The above objects, other objects, features and advantages of the present invention will become more apparent from the detailed description of the embodiments given below with reference to the drawings.

FIG. 1 is a cross-sectional view showing a fireproof compartment structure using a drainage piping member according to an embodiment of the present invention. FIG. 2 is a front view showing the drainage piping member of FIG. 1. FIG. FIG. 2 is a sectional view showing the drainage piping member of FIG. 1. FIG. FIG. 2 is an illustrative view showing the mat member in a state before the vibration insulating portion included in the drainage piping member of FIG. 1 is sewn into a cylindrical shape. FIG. 3 is a sectional view showing a fireproof compartment structure using a drainage piping member according to another embodiment of the present invention. FIG. 6 is an illustrative view showing a state before the lower sound insulating cover provided in the drainage piping member of FIG. 5 is formed into a cylindrical shape. FIG. 6 is an illustrative view showing a state before the upper sound insulating cover provided in the drainage piping member of FIG. 5 is formed into a cylindrical shape. It is a front view which shows the drainage piping member which is still another Example of this invention. 9 is a perspective view showing a biasing member included in the drainage piping member of FIG. 8. FIG.

Referring to FIG. 1, a drainage collection pipe 10, which is an embodiment of the present invention, is a drainage piping member used for drainage piping that penetrates a floor slab (fire protection section) 102 of a building, and is used in condominiums, commercial buildings, etc. In a multi-story building, it is provided at the confluence of the drainage vertical pipe 106 and the horizontal drainage pipe 108.

As will be described in detail later, the drainage collecting pipe 10 includes a pipe body 12, a thermal expansion section 30, a vibration insulating section 32, etc., and is provided so as to pass through a through hole 104 of a concrete floor slab 102. This constitutes a part of the fire protection compartment structure 100. In the event of a fire, the drainage collecting pipe 10 and the fire protection compartment structure 100 equipped with the same can prevent heat, flames, and smoke generated in the lower floor of the floor slab 102 by the thermal expansion part 30 expanding and closing the through hole 104. etc., from passing through the through hole 104 and reaching the upper floor side. The configuration of the drainage manifold 10 will be specifically described below.

As shown in FIGS. 2 and 3, the drain collecting pipe 10 includes a pipe main body 12 made of synthetic resin such as hard vinyl chloride. In this embodiment, the tube body 12 is constructed by combining a plurality of tube members. However, the specific configuration of the tube main body shown in this example is merely an example, and can be changed as appropriate. Alternatively, the entire tube body 12 can be integrally molded.

The tube body 12 is formed into a vertical tube shape extending in the vertical direction. The tube main body 12 has an enlarged diameter part 14 in the axially central part, which is larger in diameter than other parts, and below the enlarged diameter part 14, there is a tapered part that becomes smaller in diameter as it goes downward. 16 is formed. Furthermore, an upper pipe connection part 18 in the shape of a rubber ring socket is formed at the upper end of the pipe body 12 to which the upstream drainage stack 106 is connected, and at the lower end of the pipe main body 12, the downstream drainage standpipe 106 is connected. A spigot-shaped lower pipe connection portion 20 to which the vertical pipe 106 is connected is formed. Furthermore, three horizontal pipe connection parts 22 in the shape of rubber ring sockets that branch laterally are formed in the upper part of the enlarged diameter part 14 of the pipe body 12 so as to be lined up in the circumferential direction. A drainage horizontal pipe 108 is connected to each of the horizontal pipe connections 22.

Furthermore, a backflow prevention plate 24 and a swirling vane (not shown) are appropriately provided on the inner circumferential surface of the tube body 12. As a result, the waste water that has flowed into the pipe body 12 from the upstream drainage stack 106 and the drainage horizontal pipe 108 is smoothly discharged to the downstream drainage stack 106.

Such a tube body 12 includes an upper tube section 12a that is a section disposed above the through hole 104, a through tube section 12b that is a section disposed inside the through hole 104 of the floor slab 102, and a through hole 104. It includes a lower tube part 12c, which is a part disposed below. In this embodiment, the part above the lower end of the horizontal pipe connecting part 22 is the upper pipe part 12a, the part from the lower end of the horizontal pipe connecting part 22 to the upper part of the tapered part 16 is the through pipe part 12b, and the tapered part The portion below the lower part of the tube 16 is the lower tube portion 12c. However, the range of the penetrating pipe portion 12b varies depending on the thickness of the floor slab 102, and the portion from the lower end of the horizontal pipe connecting portion 22 to the upper end of the lower pipe connecting portion 20 may become the penetrating pipe portion 12b.

Further, the tube body 12 is provided with a thermal expansion section 30 in a portion disposed within the through hole 104 of the floor slab 102, that is, the through tube section 12b. The thermal expansion section 30 of this embodiment is formed in a ring shape and is attached to the outer circumferential surface of the through tube section 12b. The thermal expansion part 30 is formed of a thermal expansion material such as a rubber material or a resin material containing thermal expansion graphite, and for example, thermally expands when the temperature reaches 200° C. or higher, and its volume increases from 5 to 50°C. One that expands 40 times is used. As the thermal expansion material forming the thermal expansion section 30, a thermal expansion fireproof material manufactured by CRK Corporation, etc. can be used.

Furthermore, a cylindrical vibration insulating part 32 is provided on the outer peripheral surface of the penetrating pipe part 12b of the pipe body 12 so as to cover the thermal expansion part 30. The vibration insulating part 32 is a member that prevents drainage noise by reducing transmission of vibrations caused by drainage flowing inside the pipe body 12 to the floor slab 102, that is, by reducing body-borne sound. Details of the vibration insulating section 32 will be described later.

Furthermore, a rubber packing 34 is provided on the tube body 12 at a position corresponding to the upper edge of the through hole 104 so as to cover the upper end surface of the vibration insulating section 32 . This rubber packing 34 shuts off water between the tube body 12 and a filler 110, which will be described later, and prevents water from leaking to the lower floor through the gap.

Returning to FIG. 1, such a drainage manifold pipe 10 is installed so as to pass through a through hole 104 in a floor slab 102. Furthermore, a filler 110 such as mortar is filled between the outer circumferential surface of the drainage collecting pipe 10 (specifically, the outer circumferential surface of the vibration insulating part 32 and the rubber packing 34) and the inner circumferential surface of the through hole 104. . As a result, a fireproof compartment structure 100 is formed in which the drainage manifold pipe 10 is piped into the through hole 104 of the floor slab 102. In the event of a fire, the thermal expansion section 30 thermally expands to crush the tube body 12 and closes the through hole 104, allowing heat, flame, smoke, etc. generated in the lower floor of the floor slab 102 to pass through the through hole 104. This prevents them from passing through and reaching the upper floors.

Here, in order to close the through hole with the thermal expansion part, it is necessary that the thermally expanded part is properly held within the through hole. It was found that there is a possibility that a part of the material may fall through the through hole. On the other hand, conventional vibration insulators are known to be formed using glass wool, which has a heat resistance of about 400°C, or rock wool, which has a heat resistance of about 650°C. Common. Glass wool and rock wool are generally known to be highly heat-resistant materials, but vibration insulators formed using glass wool or rock wool were found to partially open during fire resistance tests conducted by the applicant. It has been found that there is a possibility that it may fall off.

Therefore, in this embodiment, the vibration insulating part 32 is formed of an inorganic fiber having higher heat resistance than rock wool, and in the event of a fire, the vibration insulating part 32 is used to hold the thermal expansion part 30, so that the through-hole By suppressing the fall of the thermal expansion part 30 from the through hole 104, the through hole 104 can be more appropriately closed. That is, the vibration insulating section 32 is used as a fall prevention member that prevents the thermal expansion section 30 from falling in the event of a fire. The configuration of the vibration insulating section 32 will be specifically described below.

The vibration insulating section 32 is formed in a cylindrical shape and is attached to the outer circumferential surface of the penetrating tube section 12b of the tube body 12 so as to cover the outer circumferential surface of the thermal expansion section 30. Further, in this embodiment, the vibration insulating part 32 is provided so as to cover the outer circumferential surface of the tapered part 16 that constitutes a part of the lower tube part 12c of the tube body 12, and the vibration insulating part 32 is provided at the lower end of the vibration insulating part 32. A reduced diameter portion 32a is formed which becomes smaller in diameter toward the bottom.

As the vibration insulating part 32, a mat member 50 (see FIG. 4) having a predetermined shape formed by intertwining first inorganic fibers of a predetermined length with a heat resistance temperature of 800°C or higher is used. A tube formed by sewing a thread made of the above second inorganic fiber into a cylindrical shape is used. The vibration insulating section 32 formed in this manner has a porous structure, and countless irregularities are formed on its inner and outer circumferential surfaces.

Specifically, the mat member 50 is formed by die-cutting a nonwoven fabric mat formed by intertwining first inorganic fibers by needle punching into the shape shown in FIG. 4 . That is, the mat member 50 has a rectangular strip portion 52 that becomes cylindrical when sewn into a cylindrical shape, and a curved strip portion 54 that has a truncated cone shape with a small diameter at the lower end. The curved strip portions 54 are connected to each other at the center of each side edge. However, the mat member 50 may be one in which the rectangular strip portion 52 and the curved strip portion 54 are separated from each other. Then, the end edges 52a of the rectangular strip portion 52, the end edges 54a of the curved strip portion 54, and the side edges 52b of the rectangular strip portion 52 and the side edges 54b of the curved strip portion 54 are brought into contact with each other. The part that has been removed is sewn using a sewing thread made of the second inorganic fiber. Thereby, the cylindrical vibration insulating part 32 having the reduced diameter part 32a can be easily formed. The vibration insulating part 32 formed in a cylindrical shape is lifted up from the lower side of the tube body 12 and is attached to the outer circumferential surface of the upper part of the through tube part 12b and lower tube part 12c of the tube body 12. Furthermore, a fixing tape (see FIG. 2) is wrapped around the lower end of the vibration insulating section 32.

The reason why the vibration insulating part 32 formed as described above is used is that the shape of the vibration insulating part 32 can be maintained even in the event of a fire if the inorganic fiber has a heat resistance temperature of 800° C. or higher. It is also conceivable to use a mat member in which inorganic fibers are integrated with a binder, but in this case, there is a risk that the binder will volatilize in the event of a fire, making it impossible to maintain the shape of the vibration insulating section. On the other hand, by using the mat member 50 formed by mechanically intertwining the first inorganic fibers, the shape of the vibration insulating section 32 can be appropriately maintained in the event of a fire. Furthermore, it is possible to make the mat member into a cylinder shape using tape or hook-and-loop fastener, but in this case, in the event of a fire, the tape or hook-and-loop fastener, etc. will burn and the vibration insulating part will open at this part and retain its shape. There is a possibility that it will not be possible. On the other hand, by sewing the mat member 50 into a cylindrical shape using sewing threads made of the second inorganic fibers, the shape of the vibration insulating section 32 can be appropriately maintained without being opened in the event of a fire.

As the first inorganic fibers, silica fibers, biosoluble ceramic fibers, metal fibers such as stainless steel fibers, carbon fibers, alumina fibers, and mixed fibers made by mixing two or more of these inorganic fibers can be used. Among these, in consideration of cost and moldability, it is preferable to use silica fiber. Therefore, in this example, silica fibers having a heat resistance temperature of 900° C. are used as the first inorganic fibers.

Further, the fiber length (predetermined length) of the first inorganic fiber is preferably 50 mm or more and 150 mm or less. This is because if the fiber length is less than 50 mm, the fibers will separate when sewing the mat member 50 into a cylindrical shape, causing falling and scattering of the fibers, making sewing difficult. In addition, if the fiber length exceeds 150 mm, the moldability when forming the mat member 50 will decrease. Although it is preferable that the first inorganic fibers have substantially the same length within a range of 50 mm or more and 150 mm or less, fibers of different lengths may be mixed.

Further, the thickness and density of the vibration insulating portion 32 are appropriately set according to the type of the first inorganic fiber, taking into consideration vibration insulating performance, cost, and the like. In the case of this embodiment in which silica fiber is used as the first inorganic fiber, the thickness of the vibration insulating part 32 is preferably 8 to 15 mm, and the density of the vibration insulating part 32 is preferably 100 to 300 kg/m ³ . preferable. In this example, the vibration isolator 32 has a thickness of 12 mm and a density of 160 kg/m ³ .

On the other hand, as the second inorganic fiber, silica fiber, metal fiber such as stainless steel fiber, alumina fiber, etc. can be used. As the second inorganic fibers, inorganic fibers of the same type as the first inorganic fibers may be used, or inorganic fibers of a different type from the first inorganic fibers may be used. In this example, considering cost and the like, silica fibers having a heat resistance temperature of 900° C. are used as the second inorganic fibers.

In the drainage manifold 10 (and fire protection partition structure 100) including such a vibration insulating part 32, the vibration insulating part 32 can maintain its shape without opening even in the event of a fire. Further, the vibration insulating portion 32 has numerous irregularities on its inner peripheral surface and outer peripheral surface. Therefore, the filler 110 applied around the vibration insulating part 32 solidifies while entering the outer peripheral surface of the vibration insulating part 32, and due to its anchor effect, the vibration insulating part 32 falls out from the through hole 104 in the event of a fire. This will be prevented. Further, the thermally expanded portion 30 that has thermally expanded during a fire gets entangled with the unevenness formed on the inner circumferential surface of the vibration insulating portion 32, and becomes difficult to fall from within the vibration insulating portion 32 due to its anchor effect. Therefore, the thermally expanded portion 30 that has undergone thermal expansion is appropriately held within the through hole 104 by the vibration insulating portion 32, and is unlikely to fall from the through hole 104.

Furthermore, in this embodiment, since the vibration insulating part 32 has the reduced diameter part 32a at the lower end, the thermal expansion part 30 is more difficult to fall from inside the vibration insulation part 32, and the thermal expansion part 30 is more securely attached to the through hole 100. held within.

As described above, according to this embodiment, the thermally expandable part 30 that is thermally expanded in the event of a fire is held in the through hole 104 by the vibration insulating part 32. The through hole 104 of the slab 102 can be appropriately closed.

Next, referring to FIGS. 5 to 7, a drainage collecting pipe 10 according to another embodiment of the present invention will be described. This embodiment differs from the above-described embodiments in that sound insulating covers 60, 70 are provided at the portions of the through hole 104 that are piped outside. Since the other parts are the same, the same reference numerals are given to the parts common to the above-described embodiments, and overlapping explanations will be omitted or simplified.

As shown in FIG. 5, in this embodiment, a cylindrical first sound insulating cover 60 is provided so as to cover the outer peripheral surface of the lower tube portion 12c, which is the portion disposed below the through hole 104 of the tube body 12. provided. Further, a cylindrical second sound insulating cover 70 is provided to cover the outer peripheral surface of the upper tube portion 12a, which is a portion disposed above the through hole 104 of the tube body 12. Further, in this embodiment, each of the first sound insulation cover 60 and the second sound insulation cover 70 is provided so as to cover up to the end of the drainage stack 106 connected to the drainage collection pipe 10. Each of the first sound insulation cover 60 and the second sound insulation cover 70 is a member that prevents drainage noise by absorbing and insulating the drainage sound caused by the drainage flowing inside the pipe main body 12.

Specifically, as shown in FIG. 6, the first sound-insulating cover 60 includes a thick sound-absorbing layer 62 made of a sound-absorbing material such as glass wool and soft polyurethane foam, and a sound-absorbing layer 62 made of a sound-absorbing material such as soft vinyl chloride, rubber, and polyolefin material. It has a thin sound insulating layer 64 made of a sound insulating material, and is formed into a rectangular band shape as a whole. Note that the sound absorbing layer 62 also functions as a heat insulating layer.

Further, the sound insulating layer 64 is formed to be one size larger than the sound absorbing layer 62, and one end and the upper end of the sound insulating layer 64 extend laterally and above the sound absorbing layer 62. A plurality of notches 66 are formed at the upper end of this sound insulating layer 64 . Further, the first sound insulation cover 60 is provided with hook-and-loop fasteners 68a and 68b as fixing parts for fixing and holding the first sound insulation cover 60 in a state where it is wound around the lower tube part 12c of the tube body 12. Specifically, the surface of the other end of the sound insulation layer 64 (the surface opposite to the sound absorption layer 62) is provided with a rectangular loop surface 68a raised in a loop shape. On the back surface, a rectangular hook surface 68b with hook-like raised hair is provided.

On the other hand, as shown in FIG. 7, the second sound insulation cover 70 has the same configuration as the first sound insulation cover 60, but differs in that it has an opening 80 for inserting the horizontal pipe connection part 22. . That is, the second sound insulation cover 70 has a sound absorption layer 72 formed of glass wool or the like and a sound insulation layer 74 formed of soft vinyl chloride or the like, and a plurality of notches 76 are formed at the upper end of the sound insulation layer 74. be done. Further, the second sound insulation cover 70 is provided with hook-and-loop fasteners 78a and 78b for fixing and holding the second sound insulation cover 70 in a state where it is wound around the upper tube portion 12a of the tube body 12. A plurality of openings 80 are formed at the lower end of the second sound insulating cover 70, through which the horizontal pipe connecting portions 22 are inserted.

When attaching the first sound insulating cover 60 to the lower tube part 12c of the tube body 12, the first sound insulating cover 60 is wrapped around the outer peripheral surface of the lower tube part 12c in a cylindrical shape so that the sound absorbing layer 62 is on the inside. It is fixedly held by hook-and-loop fasteners 68a and 68b. On the other hand, when attaching the second sound insulating cover 70 to the upper tube part 12a of the tube body 12, the second sound insulating cover 70 is placed in a cylindrical shape on the outer peripheral surface of the upper tube part 12a so that the sound absorbing layer 62 is on the inside. At the same time, the horizontal pipe connecting portion 22 is fitted into the opening 80 and fixedly held by the hook-and-loop fasteners 78a and 78b. In addition, in this embodiment, each of the first sound insulation cover 60 and the second sound insulation cover 70 covers up to the end of the drainage stack 106 connected to the drainage collecting pipe 10, so that the drainage collecting pipe 10 and the drainage stack 106 are After piping, it is attached (retrofitted) to the drainage collecting pipe 10.

According to the embodiment shown in FIG. 5, drainage noise can be more appropriately prevented. In addition, since the sound insulation covers 60, 70 are provided separately from the vibration insulating part 32, and the sound insulation covers 60, 70 are not placed (buried) in the through hole 104, the direction of thermal expansion and contraction of the sound insulation covers 60, 70 is taken into consideration. The sound insulating covers 60 and 70 can be attached to the tube body 12 without any trouble. Furthermore, even if the first sound insulating cover 60 cannot maintain its shape due to the heat of a fire and collapses, the first sound insulating cover 60 does not affect the blocking of the through hole 104 by the thermal expansion part 30, so it is fireproof. performance can be maintained.

In the embodiment shown in FIG. 5, both the first sound insulation cover 60 and the second sound insulation cover 70 are provided, but either one of the first sound insulation cover 60 or the second sound insulation cover 70 (preferably the first It is sufficient to simply provide a sound insulating cover 60). Further, each of the first sound insulation cover 60 and the second sound insulation cover 70 does not necessarily have to cover the end of the drainage vertical pipe 106 connected to the drainage collecting pipe 10, and the lower pipe part 12c or the upper pipe part of the pipe main body 12 It is sufficient to simply cover the outer peripheral surface of the portion 12a.

Furthermore, in each of the above-described embodiments, the reduced diameter portion 32a is formed at the lower end of the vibration insulating portion 32, but the vibration insulating portion 32 does not necessarily need to have the reduced diameter portion 32a. The vibration insulating part 32 without the reduced diameter part 32a may be formed into a cylindrical shape by sewing the edges of a rectangular mat member against each other.

Furthermore, if the vibration insulating part 32 does not have a reduced diameter part 32a, or if it has a reduced diameter part 32a but the degree of diameter reduction is small, as shown in FIG. 10 may also include a biasing member 82. The biasing member 82 is attached to the outer peripheral surface of the lower tube sheathing portion 32b, which is a portion of the vibration insulating portion 32 that covers the lower tube portion 12c of the tube body 12, and biases the lower tube sheathing portion 32b in a direction to reduce the diameter thereof. It is a ring-shaped member. This biasing member 82 causes the diameter of the lower tube covering portion 32b of the vibration insulating portion 32 to contract when the lower tube portion 12c of the tube body 12 softens and melts in the event of a fire. It forms the diameter part. By providing the drainage manifold 10 with the biasing member 82, the same effect as that obtained by forming the reduced diameter portion 32a in the vibration insulating portion 32 in advance can be obtained.

As the biasing member 82, for example, a clip member as shown in FIG. 9 can be used. The biasing member 82 shown in FIG. 9 includes an annular tightening portion 84 and gripping portions 86 extending from both ends of the tightening portion 84, and is capable of applying force to reduce the distance between the gripping portions 86. The diameter of the tightening portion 84 can be expanded by pressing the force, and when the force is released, the tightening portion 84 returns to its original state. Therefore, if the biasing member 82 is attached to the lower tube sheathing section 32b of the vibration insulating section 32 with the tightening section 84 expanded in diameter, when the lower tube section 12c softens and melts in the event of a fire, the lower tube sheathing section 32b can be reduced in diameter. This makes it more difficult for the thermal expansion section 30 to fall from within the vibration insulating section 32, and the thermal expansion section 30 is more reliably held within the through hole 104.

However, the biasing member 82 does not necessarily need to include the grip portion 86. Further, the biasing member 82 may be attached (retrofitted) after the drainage manifold pipe 10 is installed on the floor slab 102, or may be shipped in a state where it is attached to the drainage manifold pipe 10 in advance. When the biasing member 82 is attached to the drainage manifold pipe 10 in advance, the biasing member 82 does not have the gripping part 86, or the gripping part is formed in a size that allows it to pass through the through hole 104 of the floor slab 102. It is preferable to use a biasing member 82 having a diameter of 86.

Further, the biasing member 82 can not only be held by the vibration insulating part 32 by the tightening force of the tightening part 84, but also can be fixed to the vibration insulating part 32. Thereby, it is possible to reliably prevent the biasing member 82 from falling off the vibration insulating section 32 in the event of a fire. As a method for fixing the biasing member 82 to the vibration insulating part 32, for example, the biasing member 82 can be sewn to the vibration insulating part 32 at several places using a sewing thread made of second inorganic fiber. Conceivable. Further, for example, it is also possible to fold back the vibration insulating portion 32 to form a hole through which the biasing member 82 passes, and provide the biasing member 82 so as to pass through the hole.

Further, in each of the above embodiments, the thermal expansion section 30 is fitted onto the through tube section 12b of the tube body 12, but the present invention is not limited thereto. The thermal expansion section 30 may be embedded inside the tube wall of the through tube section 12b, or may be formed by containing thermally expandable graphite in a predetermined proportion in the tube wall itself of the through tube section 12b. Furthermore, the thermal expansion section 30 does not necessarily need to be provided so as to fit within the through hole 104, and may be provided so that a portion thereof protrudes from the through hole 104.

Furthermore, in each of the above-mentioned embodiments, the drainage collecting pipe 10 is illustrated as the drainage piping member, but the drainage piping member may be any other type of pipe as long as it is piped to penetrate the floor slab 102 of the building. It may be a fitting or a plumbing pipe.

Note that the specific numerical values such as the dimensions listed above are merely examples, and can be changed as appropriate depending on the needs of product specifications and the like.

10...Drainage collection pipe (drainage piping component)
12...Pipe body 12a...Upper tube section 12b...Penetration tube section 12c...Lower tube section 30...Thermal expansion section 32...Vibration insulation section 32a...Reduced diameter section 32b...Lower tube covering section 60,70...Sound insulation cover 82...Biasing Member 100...Fire protection partition structure 102...Floor slab 104...Through hole 110...Filling material

Claims (5)

A drainage piping member used for drainage piping that penetrates a floor slab of a building,
a synthetic resin pipe body having a through pipe section that is a part disposed in the through hole of the floor slab;
a thermal expansion section provided in the through tube section; and a cylindrical vibration insulating section provided on the outer peripheral surface of the through tube section so as to cover the thermal expansion section;
The vibration insulating part is formed of a mat member having a predetermined shape formed by intertwining first inorganic fibers of a predetermined length with a heat resistance temperature of 800°C or more, and a second inorganic fiber with a heat resistance temperature of 800°C or more. It is formed by sewing a cylindrical shape with sewing thread,
The tube body has an upper tube connection portion in the shape of a rubber ring socket formed at an upper end portion, and an upper tube portion that is a portion disposed above the through hole;
A drainage piping member further comprising a cylindrical upper sound insulating cover provided on an outer circumferential surface of the upper pipe section including the upper pipe connection section. A drainage piping member used for drainage piping that penetrates a floor slab of a building,
a synthetic resin pipe body having a through pipe section that is a part disposed in the through hole of the floor slab;
a thermal expansion section provided in the through tube section; and a cylindrical vibration insulating section provided on the outer peripheral surface of the through tube section so as to cover the thermal expansion section;
The vibration insulating part is formed of a mat member having a predetermined shape formed by intertwining first inorganic fibers of a predetermined length with a heat resistance temperature of 800°C or more, and a second inorganic fiber with a heat resistance temperature of 800°C or more. It is formed by sewing a cylindrical shape with sewing thread,
The tube body has an upper tube connection portion in the shape of a rubber ring socket formed at an upper end portion,
The thermal expansion part is formed in a ring shape and is attached to the outer circumferential surface of the through pipe part. The first inorganic fiber is a silica fiber,
The drainage piping member according to claim 1 or 2, wherein the vibration insulating part has a thickness of 8 mm or more and 15 mm or less, and a density of 100 kg/m ³ or more and 300 kg/m ³ or less. The tube body has an annular protrusion formed on the outer peripheral surface,
The drainage piping member according to any one of claims 1 to 3, wherein a lower end of the vibration insulating part is locked by the protrusion. The drainage piping member according to any one of claims 1 to 4, wherein the pipe main body has a lower pipe connection portion in the shape of a spigot formed at a lower end portion.

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