JP5361062B2 - Fireproof double-layer sound insulation pipe for vertical pipe - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simply and reliably prevent filtration of water into a sound insulating sheet without detriment to the performance and sound insulating property of a fire resistant two-layer pipe. <P>SOLUTION: In a fire resistant two-layer sound insulation pipe 12 for a longitudinal pipe, the outer periphery of the fire-resistant pipe 3 in which an inner tube 1 made of a synthetic resin is covered with an outer pipe 2 made of fiber-mixed mortar is wound with a fire resistant and waterproof sound insulating sheet 5 having an inner layer made of a sound absorbing material 6, an outer layer made of a waterproof fire resistant material 8, and an intermediate layer made of sound insulating material 7 between the inner layer and the outer layer. An outer pipe is projected from the sound insulating sheet at an upper end side of the fire resistant two-layer sound insulating pipe for the longitudinal pipe, and a waterproof material 14 covers a portion between the peripheral surface of a projection 13 of the outer pipe and an upper end peripheral surface of the sound insulating sheet. The waterproof material is formed of a first waterproof material 14a for covering the portion between the peripheral surface of the projection of the outer pipe and the upper end peripheral surface of the sound insulating sheet, and a second waterproof material 14b for covering the end portion on the peripheral surface of the outer pipe of the first waterproof material. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a fireproof double-layer sound insulation pipe for a vertical pipe having a structure in which a sound insulation sheet is wound around a fireproof double-layer pipe used for a vertical pipe.

  Conventionally, as piping for high-rise houses and office buildings, as shown in FIGS. 1 to 3, the outer periphery of an inner pipe 1 made of hard vinyl chloride is covered with an outer pipe 2 made of fiber-mixed mortar, and the two layers are refractory. A tube 3 is used (Patent Document 1). Since the inner pipe 1 is made of vinyl chloride, the fire-resistant double-layer pipe 3 does not rust and has good flowability such as drainage, and the outer pipe 2 of the fiber-mixed mortar has fire resistance, so that it is possible to prevent the spread of fire. There is an advantage, and usually pipe connection is made through a fireproof two-layer pipe joint 4 having a structure in which a synthetic resin joint inner pipe is covered with a fiber-mixed mortar skin embedded in a floor slab (Patent Document 2).

  In addition, these fireproof two-layer pipes 3 and fireproof two-layer pipe joints 4 are also covered with a sound insulation sheet 5 for making it difficult for the noise of drainage flowing through the inside to leak outside (Patent Document 3, Patent Document 4). The details of an example of the sound insulating sheet 5 are as shown in FIG. 3, and a sound absorbing material 6 such as felt or foamed urethane and a sound insulating material 7 such as rubber or a polyvinyl chloride sheet are laminated, and an aluminum film is further formed thereon. The waterproof refractory material 8 of an aluminum glass cloth obtained by polymerizing a glass cloth is bonded together.

JP2003-161392 JP-A-9-310389 JP 2006-90538 A JP2008-101762

  As described above, the fireproof double-layer pipe joint 4 is embedded in the floor slab 10 and the fireproof double-layer pipe 3 is connected to the upper and lower vertical pipe connection ports. In this case, the drainage noise is reduced, but when a water pool is formed on the floor slab in the upper floor, the water is between the layer of the sound insulation sheet 5 and the outer skin of the fiber-mixed mortar as shown by the path 9 in FIG. Through the floor slab 10, and further enters between the outer pipe 2 of the fireproof double-layer pipe 3 and the sound insulation sheet 5, and the downstairs room is submerged or mold is generated in the fireproof double-layer pipe 3. To come. If waterproofing is applied to the upper edge 11 of the penetration portion of the floor slab 10 of the fireproof two-layer pipe joint 4, water leakage to the downstairs can be prevented, but in reality, a narrow gap is formed between the side branch pipe of the joint 4 and the floor slab 10. Therefore, it is difficult to completely waterproof.

  In addition, if an accident occurs in which the fireproof double-layer pipe 3 is covered with rainwater and penetrates into the sound insulation sheet 5 at the piping construction site, it is difficult for moisture to escape from the sound absorbing material, causing mold and the like. It is required to reconstruct the wet fire-resistant double-layer tube 3 and there is a disadvantage that the construction cost increases.

  An object of the present invention is to eliminate such inconveniences and to easily and reliably prevent water intrusion into a sound insulation sheet without impairing the performance and sound insulation properties of the fireproof double-layer pipe.

  In the present invention, in order to solve the above-mentioned problems, the outer periphery of a fireproof two-layer pipe in which an inner pipe made of synthetic resin is covered with an outer pipe made of fiber-mixed mortar, an inner layer made of a sound absorbing material, and an outer layer of a waterproof fireproof material In the double-layer fireproof double-layer sound insulation tube having a structure wound with a fireproof and waterproof soundproof sheet having an intermediate layer made of a sound insulation material between the inner layer and the outer layer, The outer tube was protruded from the sound insulating sheet, and the peripheral surface of the protruding portion of the outer tube to the peripheral surface of the upper end portion of the sound insulating sheet was covered with a waterproof material. The waterproof material includes a first waterproof material that covers from the peripheral surface of the projecting portion of the outer pipe to the peripheral surface of the upper end portion of the sound insulation sheet, and a second cover that covers an end of the first waterproof material on the peripheral surface of the outer pipe. It is composed of a waterproof material, the inner layer of the sound insulating sheet is made of felt or foamed resin sound absorbing material, the outer layer is made of a waterproof fireproof material made of aluminum glass cloth, the intermediate layer is made of a sound insulating material of a PVC sheet, and the waterproof material is made of By using an adhesive tape made of aluminum glass cloth, the problems of the present invention can be solved at low cost.

  When water leaks on the upper floor, the water leaks to the upper end of the fireproof double-layer sound insulation pipe for the vertical pipe through the circumference of the fireproof double-layer pipe joint embedded in the floor slab, but the sound insulation sheet wound around the sound insulation pipe Since the outer pipe protrudes more than the upper end of the sound insulation sheet, the outer pipe is shielded by a waterproof material covering the peripheral surface of the sound insulation sheet from the peripheral surface of the sound insulation sheet. It flows along the surface to the surface of the waterproof refractory material on the outer layer of the sound insulation sheet, and does not enter the sound absorbing material of the sound insulation sheet, thereby preventing the occurrence of mold and odor. Also, even if the vertical fireproof double-layer sound insulation pipe prepared for piping work gets wet due to rain or the like, it will not be submerged in the sound insulation sheet from the upper end side where the waterproof material is provided. Decline can be prevented.

  When adjusting the length of this refractory double-layer pipe, slide the outer pipe from the inner pipe, cut the inner pipe and outer pipe to the required dimensions, and cut the sound insulation sheet. Since it covers the peripheral surface and the upper peripheral surface of the sound insulating sheet, this cutting operation can be carried out without delay.

  The waterproof material is covered with the first waterproof material from the peripheral surface of the protruding portion of the outer pipe to the upper peripheral surface of the sound insulating sheet as described above, and the end portion of the first waterproof material on the peripheral surface of the outer tube. By covering the surface with the second waterproof material, it is possible to prevent the first waterproof material from being released from the peripheral surface of the outer tube, and to obtain a certain waterproof property. In addition, since the waterproof material is made of an adhesive tape made of aluminum glass cloth, fire resistance is achieved, so that the inner layer of the sound insulation sheet is made of a felt or foamed resin sound absorbing material, and the outer layer is made of waterproof fireproof material made of aluminum glass cloth. It is possible to maintain the fire resistance of a fireproof two-layer pipe having a sound insulation sheet made of a material and having an intermediate layer made of a polyvinyl chloride sound insulation material.

Side view of the construction state of a conventional fireproof double-layer sound insulation pipe for vertical pipes Explanatory drawing of the water leakage path in the case of FIG. Enlarged view of the main part of FIG. Partially cut side view of an embodiment of the present invention Enlarged view of the main part of FIG. Explanatory drawing of the water leakage path in the construction state of the fireproof two-layer sound insulation pipe for vertical pipes of this invention

  The embodiment of the present invention will be described with reference to the drawings. In FIGS. 4 and 5, reference numeral 3 denotes a fireproof double-layer pipe in which a synthetic resin inner pipe 1 is covered with a fiber-mixed mortar outer pipe, and reference numeral 5 denotes the A sound insulation sheet wound around the outer periphery of the fireproof double-layer pipe 3 is shown. The sound insulation sheet 5 is made of an aluminum glass cloth obtained by polymerizing a sound absorbing material 6 such as felt or foamed polyurethane constituting the inner layer, and an aluminum foil and a glass cloth. An outer layer of the waterproof refractory material 8 and an intermediate layer made of the polyvinyl chloride sound insulation material 7 between the inner layer and the outer layer are configured into a fireproof two-layer sound insulation tube 12 for vertical pipes. Similar to the conventional one described above, the outer periphery of the joint inner pipe 17 made of synthetic resin is covered with the joint outer pipe 18 made of fiber-mixed mortar, and the upper and lower sides of the fireproof two-layer pipe joint 4 provided with the sound insulation sheet 5a on the outer periphery. Connected as a vertical pipe to the connection port It is also similar to that of conventional one.

  In the present invention, as clearly shown in FIG. 5, for example, 20 to 30 mm is projected from the upper end of the outer tube 2 and the sound insulation sheet 5 on the upper end side of the vertical fireproof double-layer sound insulation tube 12, and the peripheral surface of the projecting portion 13 When the waterproof material 14 made of an adhesive tape made of aluminum glass cloth is coated and bonded to the peripheral surface of the sound insulation sheet 5 and connected to the fireproof double-layered pipe joint 4 as a vertical pipe, water leakage from the surroundings is prevented. The sound absorbing sheet 5 is prevented from entering the sound absorbing material 6. The details are as shown in FIG. 6, and the waterproof material 14 includes a first waterproof material 14 a that covers from the peripheral surface of the protruding portion 13 of the outer tube 2 to the peripheral surface of the upper end portion of the sound insulating sheet 5, and the first waterproof material 14 a. It comprised with the 2nd waterproofing material 14b which covers the edge part 15 on the surrounding surface of an outer tube | pipe, and it was made hard to separate | separate the 1st waterproofing material 14a from the surrounding surface of the protrusion part 13. FIG.

  According to the present invention, water leakage from the periphery of the fireproof two-layer pipe joint 4 flows down to the sound insulation sheet 5 along the inner surface of the fireproof cover 16 covering the connecting portion as shown in FIG. It is blocked by the second waterproof material 14 and flows along the surface of the waterproof fire-resistant material 8 so that it does not penetrate into the sound-absorbing material 6 and does not cause mold or odor. You can finish in time. Moreover, even if it is exposed to rain or the like at the piping site, it is possible to prevent the sound absorbing material 6 from being flooded by the waterproof material 14 and to prevent deterioration of the quality of the material. Further, when adjusting the length of the vertical fireproof double-layer sound insulation pipe 12 to be short, the inner pipe 1 and the outer pipe 2 are relatively slid to cut the inner pipe 1, the outer pipe 2 and the sound insulation sheet 5. Can be easily adjusted.

DESCRIPTION OF SYMBOLS 1 Inner pipe, 2 Outer pipe, 3 Fireproof double layer pipe, 4 Fireproof double layer pipe joint, 5 Sound insulation sheet, 6 Sound absorption material, 7 Sound insulation material, 8 Waterproof fireproof material, 12 Fireproof double layer sound insulation pipe for vertical pipe, 13 Protrusion Part, 14 waterproof material, 14a 1st waterproof material, 14b 2nd waterproof material,

Claims (3)

  The outer periphery of the fireproof two-layer pipe with the synthetic resin inner pipe covered with the fiber-mixed mortar outer pipe, the inner layer made of sound absorbing material, the outer layer of waterproof fireproof material, and the sound insulation material between these inner layer and outer layer A fireproof and waterproof sound insulation sheet for a vertical pipe wound with a fireproof and waterproof sound insulation sheet having an intermediate layer, wherein the outer pipe projects from the sound insulation sheet on the upper end side of the fireproof double layer sound insulation pipe for the vertical pipe, A fireproof double-layer sound insulation pipe for a vertical pipe, characterized in that the peripheral surface of the projecting portion of the pipe to the peripheral surface of the upper end portion of the sound insulation sheet is covered with a waterproof material.   A first waterproof material that covers the waterproof material from the peripheral surface of the projecting portion of the outer tube to the peripheral surface of the upper end portion of the sound insulation sheet, and a second cover that covers an end portion of the first waterproof material on the peripheral surface of the outer tube. The fireproof double-layer sound insulation pipe for a vertical pipe according to claim 1, wherein the fireproof double-layer sound insulation pipe is made of a waterproof material.   The inner layer of the sound insulation sheet is made of felt or foamed sound absorbing material, the outer layer is made of a waterproof fireproof material made of aluminum glass cloth, the intermediate layer is made of a sound insulation material of a PVC sheet, and the waterproof material is made of an adhesive made of aluminum glass cloth. The fireproof double-layer sound insulation pipe for a vertical pipe according to claim 1, wherein the pipe is a tape.