JP7453746B2 - fittings and piping systems - Google Patents
fittings and piping systems Download PDFInfo
- Publication number
- JP7453746B2 JP7453746B2 JP2019063824A JP2019063824A JP7453746B2 JP 7453746 B2 JP7453746 B2 JP 7453746B2 JP 2019063824 A JP2019063824 A JP 2019063824A JP 2019063824 A JP2019063824 A JP 2019063824A JP 7453746 B2 JP7453746 B2 JP 7453746B2
- Authority
- JP
- Japan
- Prior art keywords
- socket
- socket member
- pipe
- resin
- joint body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229920005989 resin Polymers 0.000 claims description 42
- 239000011347 resin Substances 0.000 claims description 42
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims description 26
- 229920005672 polyolefin resin Polymers 0.000 claims description 15
- 229920000069 polyphenylene sulfide Polymers 0.000 claims description 13
- 229920000491 Polyphenylsulfone Polymers 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 8
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 7
- 239000004417 polycarbonate Substances 0.000 claims description 5
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 5
- 239000004925 Acrylic resin Substances 0.000 claims description 4
- 229920000178 Acrylic resin Polymers 0.000 claims description 4
- 239000012994 photoredox catalyst Substances 0.000 claims description 4
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 4
- 239000006260 foam Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 description 41
- 239000002351 wastewater Substances 0.000 description 16
- 239000004734 Polyphenylene sulfide Substances 0.000 description 11
- 238000000465 moulding Methods 0.000 description 11
- -1 polypropylene Polymers 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000004698 Polyethylene Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 239000000178 monomer Substances 0.000 description 5
- 229920000573 polyethylene Polymers 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 4
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 4
- 239000000460 chlorine Substances 0.000 description 4
- 229910052801 chlorine Inorganic materials 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000008602 contraction Effects 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- MBGYSHXGENGTBP-UHFFFAOYSA-N 6-(2-ethylhexoxy)-6-oxohexanoic acid Chemical compound CCCCC(CC)COC(=O)CCCCC(O)=O MBGYSHXGENGTBP-UHFFFAOYSA-N 0.000 description 2
- 239000004709 Chlorinated polyethylene Substances 0.000 description 2
- 239000004803 Di-2ethylhexylphthalate Substances 0.000 description 2
- 239000006057 Non-nutritive feed additive Substances 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 2
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- 229920006223 adhesive resin Polymers 0.000 description 2
- 239000004840 adhesive resin Substances 0.000 description 2
- 239000002216 antistatic agent Substances 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 2
- 239000008116 calcium stearate Substances 0.000 description 2
- 235000013539 calcium stearate Nutrition 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 229910052570 clay Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 239000012760 heat stabilizer Substances 0.000 description 2
- 229920006178 high molecular weight high density polyethylene Polymers 0.000 description 2
- 239000011256 inorganic filler Substances 0.000 description 2
- 229910003475 inorganic filler Inorganic materials 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 125000005397 methacrylic acid ester group Chemical group 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- UTOPWMOLSKOLTQ-UHFFFAOYSA-N octacosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCCCCC(O)=O UTOPWMOLSKOLTQ-UHFFFAOYSA-N 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000454 talc Substances 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- 239000011882 ultra-fine particle Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000003657 drainage water Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229920000578 graft copolymer Polymers 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229940049920 malate Drugs 0.000 description 1
- BJEPYKJPYRNKOW-UHFFFAOYSA-L malate(2-) Chemical compound [O-]C(=O)C(O)CC([O-])=O BJEPYKJPYRNKOW-UHFFFAOYSA-L 0.000 description 1
- 150000004701 malic acid derivatives Chemical class 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000009840 oxygen flask method Methods 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Landscapes
- Branch Pipes, Bends, And The Like (AREA)
Description
本発明は、継手および配管システムに関する。 FIELD OF THE INVENTION The present invention relates to fittings and piping systems.
特許文献１には、建築物の廃水設備や給水給湯設備などに使用される管継手が開示されている。特許文献１の管継手は、管状の継手本体と、継手本体の端部に設けられる受口とを有しており、受口に配管の端部が挿入される。継手本体は、配管の熱伸縮応力を吸収可能な伸縮性樹脂で構成される。受口は、異種の樹脂材料からなる内層と外層とを有する。受口の内層は、接着性樹脂から構成されており、配管の端部は、受口の内層に接着接続される。受口の外層は、継手本体と一体とされるものであって、継手本体と同様、伸縮性樹脂から構成される。 Patent Document 1 discloses a pipe joint used for waste water equipment, water supply equipment, etc. of buildings. The pipe joint of Patent Document 1 includes a tubular joint body and a socket provided at an end of the joint body, into which the end of the pipe is inserted. The joint body is made of stretchable resin that can absorb the thermal expansion and contraction stress of the piping. The socket has an inner layer and an outer layer made of different resin materials. The inner layer of the socket is made of adhesive resin, and the end of the pipe is adhesively connected to the inner layer of the socket. The outer layer of the socket is integrated with the joint body, and is made of stretchable resin like the joint body.
そして特許文献１では、受口における内層と外層との間の止水性を確保すること等を目的として、内層の外面に形成した凹凸形状部と、外層の内面に形成した凹凸形状部とを嵌合させることが行われる。 In Patent Document 1, for the purpose of ensuring water-tightness between the inner layer and the outer layer in the socket, an uneven portion formed on the outer surface of the inner layer and an uneven portion formed on the inner surface of the outer layer are fitted. Matching is performed.
特許文献１は、物理的な凹凸形状部の嵌合によって、受口の内層と外層とを固定するものであるが、内層或いは外層を構成する樹脂が熱に弱い場合には、高温流体が流下する際に、樹脂が軟化して、凹凸形状部の嵌合が緩くなる。その結果、受口の内層と、これに接着された配管とが管継手から抜けて、漏水が生じる虞がある。 Patent Document 1 fixes the inner layer and outer layer of the socket by physically fitting the concavo-convex shaped portions, but if the resin constituting the inner layer or the outer layer is sensitive to heat, high-temperature fluid may flow down. When doing so, the resin softens and the fit between the concave and convex portions becomes loose. As a result, there is a possibility that the inner layer of the socket and the pipe bonded thereto may come off from the pipe joint, causing water leakage.
本発明は、上記事項に鑑みてなされたものであって、その目的は、継手本体の受口に筒状の受口部材が配置される管継手であって、一般的な排水の熱（６０℃以下）が加えられても、受口部材が、継手本体の受口から抜けることを防止可能な管継手、及び当該管継手を備える配管システムを提供することである。 The present invention has been made in view of the above-mentioned matters, and its object is to provide a pipe joint in which a cylindrical socket member is disposed in the socket of the joint body, and to provide a pipe joint in which a cylindrical socket member is disposed in a socket of a joint body, To provide a pipe joint that can prevent a socket member from coming off a socket of a joint body even if the temperature is applied to the pipe joint (below 50°C), and a piping system equipped with the pipe joint.
上記目的を達成するため、本発明は、次の項に記載の主題を包含する。 To achieve the above object, the present invention includes the subject matter described in the following sections.
項１．受口を端部に備える継手本体と、
前記受口の内部に配置される筒状の受口部材とを有し、
前記受口の内面に形成される凹凸形状部と、前記受口部材の外面に形成される凹凸形状部とが嵌合することで、前記受口部材は前記受口に固定されており、
前記受口部材は、硬質塩化ビニル系樹脂、ABS樹脂、アクリル樹脂、PC、PET、またはウレタン樹脂から形成され、
前記継手本体は、JIS K7191のB法（荷重0.45Mpa）に準拠した荷重たわみ温度が６０℃以上である、フッ素系樹脂、PPSU、PPSまたはオレフィン系樹脂から形成されている、管継手。
Item 1. a fitting body with a socket at the end;
a cylindrical socket member disposed inside the socket;
The socket member is fixed to the socket by fitting the uneven part formed on the inner surface of the socket and the uneven part formed on the outer surface of the socket member,
The socket member is made of hard vinyl chloride resin, ABS resin, acrylic resin, PC, PET, or urethane resin,
The fitting body is a pipe fitting made of fluororesin, PPSU, PPS, or olefin resin with a deflection temperature under load of 60°C or higher in accordance with JIS K7191 B method (load 0.45 MPa).
項２．前記継手本体は、前記JIS K7191のB法（荷重0.45Mpa）に準拠した荷重たわみ温度が９０℃以上である、フッ素系樹脂、PPSU、PPSまたはオレフィン系樹脂から形成されている、項１に記載の管継手。 Item 2. The joint body is made of a fluororesin, PPSU, PPS, or olefin resin, which has a deflection temperature under load of 90°C or higher according to method B of JIS K7191 (load 0.45 MPa), as described in item 1. pipe fittings.
項３．項１または２に記載の管継手と、
前記受口部材の内部に挿入される配管とを備え、
前記配管は、少なくとも、塩化ビニル系樹脂からなる外層と、 オレフィン系樹脂からなる内層とを備え、
前記配管の外層と前記受口部材とが、接着接合されている、配管システム。
Item 3. The pipe joint according to item 1 or 2,
and piping inserted into the interior of the socket member,
The piping includes at least an outer layer made of vinyl chloride resin and an inner layer made of olefin resin,
A piping system, wherein the outer layer of the piping and the socket member are adhesively bonded.
本発明によれば、継手本体は、JIS K7191のB法（荷重0.45Mpa）に準拠した荷重たわみ温度が６０℃以上である、フッ素系樹脂、PPSU、PPSまたはオレフィン系樹脂から形成される。これにより、一般的な排水の熱（６０℃以下）が加えられても、受口に形成される凹凸形状部と、受口部材の外面に形成される凹凸形状部との嵌合は、緩まずに安定して維持される。したがって、受口部材が、継手本体の受口から抜けることを防止できる。 According to the present invention, the joint body is formed from a fluororesin, PPSU, PPS, or olefin resin, which has a deflection temperature under load of 60° C. or higher according to method B of JIS K7191 (load: 0.45 MPa). As a result, even when general waste water heat (60°C or less) is applied, the uneven part formed on the socket and the uneven part formed on the outer surface of the socket member will not fit loosely. First of all, it is stable and maintained. Therefore, the socket member can be prevented from coming off from the socket of the joint body.
以下、本発明の実施形態について説明する。図１は、本発明の実施形態に係る管継手Ｔを示す斜視図である。図２は、管継手Ｔが備える受口部材３を示す斜視図である。図３は、本発明の実施形態に係る管継手Ｔに配管Ｈが接続された状態を示す斜視図である。図４は、図３のＡ－Ａ線に沿って管継手Ｔ及び配管Ｈを切断した状態を示す断面図である（なお図３のＢ－Ｂ線に沿って切断する場合や、図３のＢ－Ｂ線に沿って切断する場合も、管継手Ｔ及び配管Ｈは、図４と同様の断面を有する）。 Embodiments of the present invention will be described below. FIG. 1 is a perspective view showing a pipe joint T according to an embodiment of the present invention. FIG. 2 is a perspective view showing the socket member 3 included in the pipe joint T. FIG. 3 is a perspective view showing a state in which a pipe H is connected to a pipe joint T according to an embodiment of the present invention. FIG. 4 is a sectional view showing the state in which the pipe fitting T and the pipe H are cut along the line AA in FIG. 3. Even when cut along the line BB, the pipe fitting T and the pipe H have the same cross section as in FIG. 4).
本実施形態に係る管継手Ｔは、樹脂製の配管Ｈ（図３，図４）を接続可能なものである。管継手Ｔは、配管Ｈと共に、建築物の排水設備や給水給湯設備の配管システムを構成する。 The pipe joint T according to this embodiment is capable of connecting a resin pipe H (FIGS. 3 and 4). The pipe joint T, together with the pipe H, constitutes a piping system for a building's drainage equipment or water/hot water supply equipment.
管継手Ｔは、継手本体２と、受口部材３とを有している。 The pipe joint T has a joint body 2 and a socket member 3.
継手本体２は、主管４と、主管４に連なる受口５とを備えており、受口５によって継手本体２の端部が構成される。 The joint body 2 includes a main pipe 4 and a socket 5 connected to the main pipe 4, and the socket 5 constitutes an end portion of the joint main body 2.
継手本体２（主管４及び受口５）は、フッ素系樹脂、PPSU （ポリフェニルスルホン）、PPS（ポリフェニレンサルファイド）またはオレフィン系樹脂から形成される。オレフィン樹脂として、ポリプロピレンやポリエチレンが挙げられる。ポリプロピレン、ポリエチレン及びPPSU、PPSによれば、一般排水用途及び厨房排水において、十分な耐薬性を付与することができる。プラント用途等や耐薬性を得る場合は、フッ素系樹脂としてPVDFやPTFEが使用されてもよい。 The joint body 2 (main pipe 4 and socket 5) is made of fluororesin, PPSU (polyphenylsulfone), PPS (polyphenylene sulfide), or olefin resin. Examples of olefin resins include polypropylene and polyethylene. Polypropylene, polyethylene, PPSU, and PPS can provide sufficient chemical resistance in general wastewater applications and kitchen wastewater. For plant applications or to obtain chemical resistance, PVDF or PTFE may be used as the fluororesin.
継手本体２の平滑性を向上させることを目的として、オレフィン系樹脂の一種である高分子量高密度ポリエチレンを用いて、継手本体２が形成されてもよい。高分子量高密度ポリエチレンによれば、塩化ビニルを使用する場合に比して継手本体２の内面の粗度をよりも下げることができるともに、排水の流下性を向上させ、内面の細菌の繁殖、油分の固化による滞留を抑制できる。精密機器からの排水、医療機器からの排水において効果が期待される。 For the purpose of improving the smoothness of the joint body 2, the joint body 2 may be formed using high molecular weight high density polyethylene, which is a type of olefin resin. Using high-molecular-weight high-density polyethylene, the roughness of the inner surface of the joint body 2 can be lowered compared to when vinyl chloride is used, and it also improves the flow of drainage water and prevents the growth of bacteria on the inner surface. Retention due to solidification of oil can be suppressed. It is expected to be effective for drainage from precision equipment and medical equipment.
受口部材３は、受口５の内部に配置されるものであって、図２に示すように筒状を呈している。図３及び図４に示すように、受口部材３の内部には、配管Ｈの端部が挿入される。主管４の内径は、配管Ｈの内径とほぼ等しくされる（図４）。受口５の外径は、主管４の外径よりも大きくされる。受口５の内径は、受口部材３の外径とほぼ等しくされる。受口部材３の内径は、配管Ｈの外径とほぼ等しくされる。 The socket member 3 is arranged inside the socket 5, and has a cylindrical shape as shown in FIG. As shown in FIGS. 3 and 4, the end of the pipe H is inserted into the socket member 3. As shown in FIGS. The inner diameter of the main pipe 4 is made approximately equal to the inner diameter of the pipe H (FIG. 4). The outer diameter of the socket 5 is made larger than the outer diameter of the main pipe 4. The inner diameter of the socket 5 is made approximately equal to the outer diameter of the socket member 3. The inner diameter of the socket member 3 is made approximately equal to the outer diameter of the pipe H.
なお図示例では、継手本体２が、３つの端部に受口５が設けられるＬＴ型とされているが（主管４が直線部分４ａ及び分岐部分４ｂから構成されて、直線部分４ａの両端や分岐部分４ｂの先端に受口５が設けられているが）、継手本体２の形状は、上記のＬＴ型に限定されない。例えば、継手本体２は、JIS K 6739等に記載のＬ字型或いは直線型や、JISK6743等に記載の形状を呈するものであってもよい。或いは、継手本体２は、金属製である一部の受口に鋼管の接続が可能なバルブソケットとされてもよい（例えば、金属製の受口が１箇所設けられるバルブソケットとされてもよい）。或いは、継手本体２は、ゴム輪によって配管Ｈとの接続が可能な差込ソケット或いはやり取りソケット等とされてもよい。 In the illustrated example, the joint main body 2 is an LT type in which sockets 5 are provided at three ends (the main pipe 4 is composed of a straight part 4a and a branch part 4b, and both ends of the straight part 4a and Although the socket 5 is provided at the tip of the branch portion 4b), the shape of the joint body 2 is not limited to the above-mentioned LT type. For example, the joint body 2 may have an L-shape or a straight shape as described in JIS K 6739 or the like, or a shape as described in JIS K6743 or the like. Alternatively, the joint body 2 may be a valve socket to which a steel pipe can be connected to some of the sockets made of metal (for example, it may be a valve socket with one metal socket provided). ). Alternatively, the joint body 2 may be an insertion socket or an exchange socket that can be connected to the pipe H using a rubber ring.
受口部材３は、硬質塩化ビニル系樹脂から形成される。当該硬質塩化ビニル系樹脂として、塩化ビニル単量体の単独重合体の他、例えば、塩化ビニル単量体と塩化ビニル単量体以外の重合性単量体との共重合体、塩化ビニル系樹脂以外の重合体に塩化ビニル単量体をグラフトさせたグラフト共重合体等を使用できる。 The socket member 3 is made of hard vinyl chloride resin. Examples of the hard vinyl chloride resin include homopolymers of vinyl chloride monomers, copolymers of vinyl chloride monomers and polymerizable monomers other than vinyl chloride monomers, and vinyl chloride resins. A graft copolymer obtained by grafting a vinyl chloride monomer onto a polymer other than the above can be used.
なお耐衝撃性を向上させるために、上記の硬質塩化ビニル系樹脂に、超微粒子のゴム成分を含有させてもよい。当該超微粒子のゴム成分は、塩化ビニル系樹脂に物理的または化学的に結合していてよい。 In order to improve impact resistance, the hard vinyl chloride resin described above may contain a rubber component in the form of ultrafine particles. The rubber component of the ultrafine particles may be physically or chemically bonded to the vinyl chloride resin.
また、上記の硬質塩化ビニル系樹脂は、塩素化塩化ビニル系樹脂であることが好ましい。また必要に応じて、ポリ塩化ビニル樹脂、アルキル錫メルカプト化合物やアルキル錫マレート等の熱安定剤、フタル酸ジ－２－エチルヘキシル（ＤＯＰ）、アジピン酸－２－エチルヘキシル（ＤＯＡ）等の可塑剤；ポリエチレン系ワックス、エステル系ワックス、ステアリン酸、モンタン酸系ワックス、カルシウムステアレート等の滑剤；アクリル系、塩素化ポリエチレン系などの耐衝撃性強化剤；顔料；帯電防止剤；難燃剤；炭酸カルシウム、タルク、クレー、マイカ等の無機充填剤、メタクリル酸エステル系樹脂等の加工助剤などが添加されてもよい。 Moreover, it is preferable that the above-mentioned hard vinyl chloride resin is a chlorinated vinyl chloride resin. In addition, if necessary, polyvinyl chloride resin, heat stabilizers such as alkyltin mercapto compounds and alkyltin malates, and plasticizers such as di-2-ethylhexyl phthalate (DOP) and 2-ethylhexyl adipate (DOA); Lubricants such as polyethylene wax, ester wax, stearic acid, montanic acid wax, calcium stearate, etc.; Impact resistance reinforcement agents such as acrylic and chlorinated polyethylene; pigments; antistatic agents; flame retardants; calcium carbonate, Inorganic fillers such as talc, clay, and mica, processing aids such as methacrylic acid ester resins, and the like may be added.
また上記の硬質塩化ビニル系樹脂の他に、ABS樹脂（ABS:Acrylonitrile Butadiene Styrene）、アクリル樹脂、PC（ポリカーボネート）、PET（ポリエチレンテレフタレート）、またはウレタン樹脂等の接着可能な樹脂を用いて、受口部材３が形成されてもよい。 In addition to the above-mentioned hard vinyl chloride resin, adhesive resins such as ABS resin (ABS: Acrylonitrile Butadiene Styrene), acrylic resin, PC (polycarbonate), PET (polyethylene terephthalate), or urethane resin can be used to A mouth member 3 may be formed.
以上に説明した樹脂を用いて受口部材３を形成すれば、受口部材３を配管Ｈに接着でき、且つ、受口部材３の機械的強度を高めることができる。 If the socket member 3 is formed using the resin described above, the socket member 3 can be bonded to the pipe H, and the mechanical strength of the socket member 3 can be increased.
本実施形態では、止水性の確保や強度の保持等を目的として、図４に示すように、受口５の内面に形成された凹凸形状部１０と、受口部材３の外面に形成された凹凸形状部２０とを嵌合させることで、受口部材３が受口５に固定される。 In this embodiment, for the purpose of ensuring water-tightness, maintaining strength, etc., as shown in FIG. The socket member 3 is fixed to the socket 5 by fitting the concavo-convex shaped portion 20.
図５（ａ）は図４に示される継手本体２の断面を抽出した図であり、図５（ｂ）は図４に示される受口部材３の断面を抽出した図である。 5(a) is an extracted cross-sectional view of the joint body 2 shown in FIG. 4, and FIG. 5(b) is an extracted cross-sectional view of the socket member 3 shown in FIG. 4.
上記の「受口５の内面」は、図５（ａ）に示す「受口５の段差面５０ａ及び内周面５０ｂ」に相当する。受口５の段差面５０ａには凹凸形状部１０ａが形成され、受口５の内周面５０ｂには凹凸形状部１０ｂが形成される。上記の「受口部材３の外面」は、図２や図５（ｂ）に示す「受口部材３の端面３０ａ及び外周面３０ｂ」に相当する。受口部材３の端面３０ａには凹凸形状部２０ａが形成され、受口部材３の外周面３０ｂには凹凸形状部２０ｂが形成される。 The above-mentioned "inner surface of the socket 5" corresponds to "the step surface 50a and the inner circumferential surface 50b of the socket 5" shown in FIG. 5(a). An uneven portion 10a is formed on the stepped surface 50a of the socket 5, and an uneven portion 10b is formed on the inner peripheral surface 50b of the socket 5. The above-mentioned "outer surface of the socket member 3" corresponds to "the end surface 30a and the outer circumferential surface 30b of the socket member 3" shown in FIGS. 2 and 5(b). An uneven portion 20a is formed on the end surface 30a of the socket member 3, and an uneven portion 20b is formed on the outer peripheral surface 30b of the socket member 3.
受口５の凹凸形状部１０ａと、受口部材３の凹凸形状部２０ａとは、凹部と凸部とが管継手Ｔの径方向（図４）に交互に並んだものである。これら凹凸形状部１０ａ，２０ａが嵌合することで、受口部材３は径方向に固定される。受口５の凹凸形状部１０ｂと、受口部材３の凹凸形状部２０ｂとは、凹部と凸部とが管継手Ｔの軸方向（図４）に交互に並んだものである。これら凹凸形状部１０ｂ，２０ｂが嵌合することで、受口部材３は軸方向に固定される。 The uneven portion 10a of the socket 5 and the uneven portion 20a of the socket member 3 have recesses and projections arranged alternately in the radial direction of the pipe joint T (FIG. 4). By fitting these uneven portions 10a and 20a, the socket member 3 is fixed in the radial direction. The uneven portion 10b of the socket 5 and the uneven portion 20b of the socket member 3 have recesses and projections arranged alternately in the axial direction of the pipe joint T (FIG. 4). By fitting these uneven portions 10b and 20b, the socket member 3 is fixed in the axial direction.
上述した凹凸形状部１０，２０の嵌合によれば、受口５と受口部材３との間に一体的強度を保持できるとともに、受口５と受口部材３との間の止水性を確保できる。また凹凸形状部１０ａ，２０ａが嵌合することで、止水性を向上させることができるとともに、後述する射出成型を行う際に受口部材３の位置あわせが容易となる。 According to the above-described fitting of the uneven portions 10 and 20, integral strength can be maintained between the socket 5 and the socket member 3, and the water-stopping property between the socket 5 and the socket member 3 can be improved. Can be secured. In addition, by fitting the uneven portions 10a and 20a together, water-stopping properties can be improved, and the positioning of the socket member 3 becomes easy when performing injection molding, which will be described later.
なお、凹凸形状部１０，２０における凹部及び凸部の寸法や数等は特に限定されないが、凹凸形状部１０と凹凸形状部２０とは、少なくとも熱伸縮で受口部材３の抜けが生じない強度をもって物理的に嵌合する必要がある。 Note that the dimensions and number of the concave and convex portions in the concavo-convex portions 10 and 20 are not particularly limited, but the concave-convex portions 10 and the concave-convex portions 20 have at least a strength that will not cause the socket member 3 to come off due to thermal expansion and contraction. It is necessary to physically fit them together.
また本発明では、主管４の内径と受口５の外径とを等しくさせて、継手本体２を段差面５０ａの無いものとすることができる。この場合には、受口５の内周面５０ｂに形成した凹凸形状部１０ｂと、受口部材３の外周面３０ｂに形成した凹凸形状部２０ｂとの嵌合によって、受口部材３を受口５に固定できる。また上記の場合でも、後述する射出成型は可能であり、なおかつ止水性能も十分確保できる。 Further, in the present invention, the inner diameter of the main pipe 4 and the outer diameter of the socket 5 can be made equal, so that the joint body 2 can be made without a stepped surface 50a. In this case, by fitting the uneven portion 10b formed on the inner circumferential surface 50b of the socket 5 with the uneven portion 20b formed on the outer circumferential surface 30b of the socket member 3, the socket member 3 is moved into the socket. It can be fixed to 5. Even in the above case, injection molding, which will be described later, is possible, and sufficient water-stopping performance can be ensured.
そして本実施形態では、管継手Ｔの内部を流れる排水Ｗ（図４）の熱によって、凹凸形状部１０，２０の嵌合が緩むことを防止するために、継手本体２を形成するために使用される樹脂（フッ素系樹脂、PPSU、PPSまたはオレフィン系樹脂）は、JIS K7191のB法（荷重0.45Mpa）に準拠した荷重たわみ温度が６０℃以上とされる。これにより、一般的な排水の熱（６０℃以下）が継手本体２に加えられても、凹凸形状部１０，２０の嵌合は緩まずに安定して維持される。したがって、受口部材３が継手本体２の受口５から抜けることを防止できる。そしてこのことから、配管Ｈが受口部材３と共に受口５から抜けることを防止できるので、配管Ｈが管継手Ｔに接続された状態が安定して維持される。 In this embodiment, it is used to form the joint body 2 in order to prevent the fitting between the uneven portions 10 and 20 from loosening due to the heat of the waste water W (FIG. 4) flowing inside the pipe joint T. The resin used (fluororesin, PPSU, PPS, or olefin resin) has a deflection temperature under load of 60°C or higher in accordance with JIS K7191 B method (load 0.45Mpa). As a result, even when the general heat of wastewater (60° C. or lower) is applied to the joint body 2, the fitting between the uneven portions 10 and 20 is stably maintained without loosening. Therefore, the socket member 3 can be prevented from coming off from the socket 5 of the joint body 2. From this, it is possible to prevent the pipe H from coming off the socket 5 together with the socket member 3, so that the state in which the pipe H is connected to the pipe joint T is stably maintained.
なお、管継手Ｔの内部を流れる排水Ｗが、厨房排水や工場機器排水等の高温排水とされる場合には、上記の荷重たわみ温度が９０℃以上である、フッ素系樹脂、PPSU、PPSまたはオレフィン系樹脂によって、継手本体２を形成することが好ましい。このようにすれば、上記高温排水の最高温度が９０℃以下なので、上記高温排水の熱によって凹凸形状部１０，２０の嵌合が緩んで受口部材３が受口５から抜けることを防止できる。 In addition, when the wastewater W flowing inside the pipe joint T is high-temperature wastewater such as kitchen wastewater or factory equipment wastewater, fluororesin, PPSU, PPS or It is preferable that the joint body 2 is formed of an olefin resin. In this way, since the maximum temperature of the high-temperature wastewater is 90° C. or lower, it is possible to prevent the socket member 3 from coming off from the socket 5 due to loosening of the fitting between the uneven portions 10 and 20 due to the heat of the high-temperature wastewater. .
さらに、管継手Ｔの内部を流れる排水Ｗが、工場蒸気ドレンを流れる蒸気排水や、オートクレーブで生じた蒸気排水とされる場合には、上記の荷重たわみ温度が１００℃以上である、フッ素系樹脂、PPSU、PPSまたはオレフィン系樹脂によって、継手本体２を形成することが好ましい。このようにすれば、上記の蒸気排水の最高温度が１００℃以下なので、蒸気排水の熱によって凹凸形状部１０，２０の嵌合が緩んで受口部材３が受口５から抜けることを防止できる。 Furthermore, when the waste water W flowing inside the pipe joint T is steam waste water flowing through a factory steam drain or steam waste water generated in an autoclave, a fluorine-based resin having the above-mentioned deflection temperature under load of 100°C or higher is used. The joint body 2 is preferably formed of , PPSU, PPS, or olefin resin. In this way, since the maximum temperature of the steam drainage is 100° C. or less, it is possible to prevent the socket member 3 from coming off from the socket 5 due to loosening of the fitting between the uneven portions 10 and 20 due to the heat of the steam drainage. .
上述した継手本体２と受口部材３とは、それぞれ射出成形によって成形できる。 The joint main body 2 and the socket member 3 described above can each be molded by injection molding.
この場合、継手本体２及び受口部材３を備える管継手Ｔを、インサート成形によって成形できる。インサート成形の場合には、予め射出成形された受口部材３を金型にセットしてから、金型に伸縮性樹脂材料を注入して継手本体２を射出成形する。 In this case, the pipe joint T including the joint body 2 and the socket member 3 can be molded by insert molding. In the case of insert molding, the socket member 3, which has been injection molded in advance, is set in a mold, and then a stretchable resin material is injected into the mold to injection mold the joint body 2.
また、管継手Ｔは、二色成形（多色成形）によって成形することができる。二色成形（多色成形）を行う場合には、一種類の金型に対し、別々に樹脂を射出可能な複数の射出ノズルを用いて、継手本体２と受口部材３とを同時に射出成形する。 Moreover, the pipe joint T can be molded by two-color molding (multi-color molding). When performing two-color molding (multi-color molding), the joint body 2 and the socket member 3 are simultaneously injection molded using multiple injection nozzles that can separately inject resin into one type of mold. do.
或いは、継手本体２と受口部材３とを別々に射出成形しておき、後工程で両者を嵌合または強制嵌合するなどにより組合せて固定し、管継手Ｔを構成することなども可能である。 Alternatively, it is also possible to form the pipe joint T by separately injection molding the joint body 2 and the socket member 3, and then fixing them together by fitting or forcibly fitting them in a later process. be.
なお、管継手Ｔを、上記したインサート成形や二色成形（多色成形）で製造する場合には、継手本体２の凹凸形状部１０と、受口部材３の凹凸形状部２０とが、熱接着されることになる。また、管継手Ｔを上記した嵌合または強制嵌合で製造する場合には、凹凸形状部１０，２０を接着剤で接着するようにしても良い。なお、上記したインサート成形の場合には、受口部材３に接着剤を塗布しておくことも可能である。 Note that when the pipe fitting T is manufactured by the above-described insert molding or two-color molding (multicolor molding), the uneven portion 10 of the fitting body 2 and the uneven portion 20 of the socket member 3 are heated. It will be glued. Moreover, when manufacturing the pipe joint T by the above-described fitting or forced fitting, the uneven portions 10 and 20 may be bonded together with an adhesive. In addition, in the case of the above-mentioned insert molding, it is also possible to apply an adhesive to the socket member 3.
次に本発明の実施形態に係る配管システムについて説明する。図６は、本発明の実施形態に係る配管システムＳの一例を示す概略斜視図である。 Next, a piping system according to an embodiment of the present invention will be described. FIG. 6 is a schematic perspective view showing an example of the piping system S according to the embodiment of the present invention.
配管システムＳは、上述した管継手Ｔと、当該管継手Ｔが有する受口部材３の内部に挿入される配管Ｈとを備える。 The piping system S includes the above-described pipe fitting T and a pipe H inserted into the socket member 3 included in the pipe fitting T.
具体的には、配管システムＳは、地上に配置される機器Ｍ（オートクレーブ等）で発生した蒸気排水を、地中に配置される排水溝Ｄに流す流路を構成するものであり、上記の管継手Ｔとして管継手Ｔ１，Ｔ２，Ｔ３，Ｔ４を備え、上記の配管Ｈとして配管Ｈ１，Ｈ２，Ｈ３，Ｈ４を備えている。 Specifically, the piping system S constitutes a flow path through which steam drainage generated by equipment M (such as an autoclave) placed above ground flows into a drainage ditch D placed underground, and the above-mentioned The pipe fittings T are provided with pipe fittings T1, T2, T3, and T4, and the pipes H are provided with pipes H1, H2, H3, and H4.
管継手Ｔ１は、バルブソケットである継手本体２を備えるものである。管継手Ｔ１の一端部Ｔ１ａは、金属製の受口とされており、当該一端部Ｔ１ａ（金属製の受口）には、機器Ｍから延びる鋼管Ｋが接続される。管継手Ｔの他端部Ｔ１ｂは、図４に示すものと同様の構造を有しており、他端部Ｔ１ｂに設けられる受口部材３の内部に、配管Ｈ１の一端が挿入される。 The pipe joint T1 includes a joint body 2 that is a bulb socket. One end T1a of the pipe joint T1 is a metal socket, and a steel pipe K extending from the device M is connected to the one end T1a (metal socket). The other end T1b of the pipe joint T has a structure similar to that shown in FIG. 4, and one end of the pipe H1 is inserted into the socket member 3 provided at the other end T1b.
管継手Ｔ２は、継手本体２がＬ型を呈するものである。管継手Ｔの一端部Ｔ２ａ及び他端部Ｔ２ｂは、図４に示すものと同様の構造を有している。一端部Ｔ２ａに設けられる受口部材３の内部に、配管Ｈ１の他端が挿入され、他端部Ｔ２ｂに設けられる受口部材３の内部に、配管Ｈ２の一端が挿入される。 In the pipe joint T2, the joint body 2 has an L-shape. One end T2a and the other end T2b of the pipe joint T have a structure similar to that shown in FIG. 4. The other end of the pipe H1 is inserted into the socket member 3 provided at one end T2a, and one end of the pipe H2 is inserted into the socket member 3 provided at the other end T2b.
管継手Ｔ３は、継手本体２が直線型を呈するものである。管継手Ｔ３の一端部Ｔ３ａ及び他端部Ｔ３ｂは、図４に示すものと同様の構造を有している。一端部Ｔ３ａに設けられる受口部材３の内部に、配管Ｈ２の他端が挿入され、他端部Ｔ３ｂに設けられる受口部材３の内部に、配管Ｈ３の一端が挿入される。 In the pipe joint T3, the joint body 2 has a straight shape. One end T3a and the other end T3b of the pipe joint T3 have a structure similar to that shown in FIG. 4. The other end of the pipe H2 is inserted into the socket member 3 provided at one end T3a, and one end of the pipe H3 is inserted into the socket member 3 provided at the other end T3b.
管継手Ｔ４は、継手本体２がＬ型を呈するものである。管継手Ｔ４の一端部Ｔ４ａ及び他端部Ｔ４ｂは、図４に示すものと同様の構造を有している。一端部Ｔ４ａに設けられる受口部材３の内部に、配管Ｈ３の他端が挿入され、他端部Ｔ４ｂに設けられる受口部材３の内部に、配管Ｈ４の一端が挿入される。配管Ｈ４の他端は、排水溝Ｄに接続される。 In the pipe joint T4, the joint body 2 has an L-shape. One end T4a and the other end T4b of the pipe joint T4 have a structure similar to that shown in FIG. 4. The other end of the pipe H3 is inserted into the socket member 3 provided at one end T4a, and one end of the pipe H4 is inserted into the socket member 3 provided at the other end T4b. The other end of the pipe H4 is connected to the drainage ditch D.
配管Ｈ１，Ｈ２，Ｈ３，Ｈ４は、図３及び図４に示すものと同様、外層Ｈａと内層Ｈｂとを備えており、外層Ｈａが受口部材３に接着接合される。 The pipes H1, H2, H3, and H4 are provided with an outer layer Ha and an inner layer Hb, and the outer layer Ha is adhesively bonded to the socket member 3, similar to those shown in FIGS. 3 and 4.
（配管Ｈの外層Ｈａ）
配管Ｈの外層Ｈａは、塩素化塩化ビニルから形成される。塩素化塩化ビニル樹脂は、単独で用いられてもよいし、必要に応じて、ポリ塩化ビニル樹脂、アルキル錫メルカプト化合物やアルキル錫マレート等の熱安定剤、フタル酸ジ－２－エチルヘキシル（ＤＯＰ）、アジピン酸－２－エチルヘキシル（ＤＯＡ）等の可塑剤；ポリエチレン系ワックス、エステル系ワックス、ステアリン酸、モンタン酸系ワックス、カルシウムステアレート等の滑剤；アクリル系、塩素化ポリエチレン系などの耐衝撃性強化剤；顔料；帯電防止剤；難燃剤；炭酸カルシウム、タルク、クレー、マイカ等の無機充填剤、メタクリル酸エステル系樹脂等の加工助剤などが塩素化塩化ビニル樹脂に添加されてもよい。また塩素含有量が６０～７１重量％であって、塩素化塩化ビニルの平均重合度が６００～１４００である塩素化塩化ビニル樹脂を使用して、外層Ｈａを形成することが好ましい。塩素含有量が６０重量％未満である場合には、十分な耐熱性が得られない。塩素含有量が７１重量％を超える場合には、成形が困難になるおそれがある。なお、塩素含有量は、ＪＩＳ Ｋ７２２９に準拠して酸素フラスコ燃焼法による中和適定により決定される。外層Ｈａの厚みは特に限定されないが、成型性等を考慮すると、外層Ｈａの厚みを少なくとも1mm以上とすることが望ましい。管厚み方向の層比率を塩化ビニル優位にすることで、汎用されている塩化ビニル配管と同等の扱い易さ・施工性を得ることができる。 なお本発明は、配管Ｈの外層Ｈａを、塩素化塩化ビニル以外の樹脂から形成することを除外するものではない。例えば、外層Ｈａは、塩化ビニル系樹脂、ナイロン系樹脂、エポキシ系樹脂、ABS樹脂等から形成することもできる。
(Outer layer Ha of piping H)
The outer layer Ha of the pipe H is formed from chlorinated vinyl chloride. The chlorinated vinyl chloride resin may be used alone, or if necessary, a polyvinyl chloride resin, a heat stabilizer such as an alkyltin mercapto compound or an alkyltin malate, or di-2-ethylhexyl phthalate (DOP) may be used. , plasticizers such as 2-ethylhexyl adipate (DOA); lubricants such as polyethylene wax, ester wax, stearic acid, montan acid wax, calcium stearate; impact resistance such as acrylic and chlorinated polyethylene A reinforcing agent; a pigment; an antistatic agent; a flame retardant; an inorganic filler such as calcium carbonate, talc, clay, or mica, a processing aid such as a methacrylic acid ester resin, etc. may be added to the chlorinated vinyl chloride resin. Further, it is preferable to form the outer layer Ha using a chlorinated vinyl chloride resin having a chlorine content of 60 to 71% by weight and an average degree of polymerization of chlorinated vinyl chloride of 600 to 1,400. If the chlorine content is less than 60% by weight, sufficient heat resistance cannot be obtained. If the chlorine content exceeds 71% by weight, molding may become difficult. Note that the chlorine content is determined by neutralization optimization using an oxygen flask combustion method in accordance with JIS K7229. The thickness of the outer layer Ha is not particularly limited, but considering moldability and the like, it is desirable that the thickness of the outer layer Ha be at least 1 mm or more. By making vinyl chloride predominant in the layer ratio in the pipe thickness direction, it is possible to obtain ease of handling and construction equivalent to that of commonly used vinyl chloride piping. Note that the present invention does not exclude forming the outer layer Ha of the pipe H from a resin other than chlorinated vinyl chloride. For example, the outer layer Ha can also be formed from vinyl chloride resin, nylon resin, epoxy resin, ABS resin, or the like.
以上に示す樹脂を用いて配管Ｈの外層Ｈａを形成すれば、外層Ｈａを受口部材３に接着することが可能である。 If the outer layer Ha of the pipe H is formed using the resin shown above, it is possible to bond the outer layer Ha to the socket member 3.
（配管Ｈの内層Ｈｂ）
配管Ｈの内層Ｈｂは、耐薬性能を有する樹脂であれば特に限定されないが、汎用樹脂であるPP(ポリプロピレン)やPE(ポリエチレン)などのオレフィン系樹脂を用いて内層Ｈｂを形成することが好ましい。さらに耐薬性能を有するフッ素系樹脂やＰＰＳ（ポリフェニレンサルファイド）等の樹脂を用いて配管Ｈの内層Ｈｂが形成されてもよい。 内層Ｈｂの厚みは特に限定されない。
(Inner layer Hb of piping H)
The inner layer Hb of the pipe H is not particularly limited as long as it is a resin having chemical resistance, but it is preferable to form the inner layer Hb using a general-purpose resin such as olefin resin such as PP (polypropylene) or PE (polyethylene). Furthermore, the inner layer Hb of the pipe H may be formed using a resin such as a fluororesin or PPS (polyphenylene sulfide) that has chemical resistance. The thickness of the inner layer Hb is not particularly limited.
なお外層Ｈａと内層Ｈｂの間に接着層が設けられてもよい。このようにすれば、内層Ｈｂと外層Ｈａが固定されるため、より施工性が向上する。接着層の材質は、特に限定されないが、施工時の切断及び熱伸縮により発生する外力に対して、十分な耐久性を有するものが好ましい。 Note that an adhesive layer may be provided between the outer layer Ha and the inner layer Hb. In this way, the inner layer Hb and the outer layer Ha are fixed, so that workability is further improved. The material of the adhesive layer is not particularly limited, but it is preferably one that has sufficient durability against external forces generated by cutting and thermal expansion and contraction during construction.
また本発明の配管システムＳを構成する管継手Ｔ及び配管Ｈの数や管継手Ｔの種類等は上記に示したものに限定されない。すなわち、配管システムＳを構成する管継手Ｔや配管Ｔの数は、１以上の任意の数とすることができ、また配管システムＳを構成するために、継手本体１がＬＴ型・Ｌ字型・直線型・バルブソケット・差込ソケット・やり取りソケット等である管継手Ｔを使用できる。 Further, the number of pipe fittings T and pipes H, the types of pipe fittings T, etc. that constitute the piping system S of the present invention are not limited to those shown above. That is, the number of pipe fittings T and pipes T constituting the piping system S can be any number greater than or equal to 1, and in order to configure the piping system S, the fitting body 1 may be LT-shaped or L-shaped.・Pipe fittings T such as straight type, valve sockets, plug-in sockets, exchange sockets, etc. can be used.
（実施例）
本発明者らは、本発明の実施例の管継手と、比較例の管継手とを製作し、実施例及び比較例の管継手の内部に６０℃の湯を流す試験を行った。以下の表１に、実施例及び比較例の管継手を製造するために使用した材料と、試験結果とを示す。
(Example)
The present inventors manufactured a pipe joint according to an example of the present invention and a pipe joint according to a comparative example, and conducted a test in which hot water at 60° C. was poured into the insides of the pipe joints according to the example and comparative example. Table 1 below shows the materials used to manufacture the pipe fittings of the Examples and Comparative Examples and the test results.
実施例１～４の管継手と、比較例の管継手とは、いずれも継手本体の受口に筒状の受口部材が配置されて、受口の凹凸形状部と受口部材の凹凸形状部とが嵌合するものであるが、実施例１～４では、継手本体の樹脂の荷重たわみ温度が６０℃上であるのに対して、比較例では、継手本体の樹脂の荷重たわみ温度が６０℃未満（５０℃）とされている。 In both the pipe fittings of Examples 1 to 4 and the pipe fitting of the comparative example, a cylindrical socket member is arranged in the socket of the joint body, and the uneven shape of the socket and the uneven shape of the socket member are different from each other. However, in Examples 1 to 4, the deflection temperature under load of the resin in the joint body was 60°C, whereas in the comparative example, the deflection temperature under load of the resin in the joint body was 60°C. It is said to be less than 60°C (50°C).
各管継手の内部に６０℃の湯を流した結果、比較例の管継手では、継手本体から受口部材が抜けることが生じたものの、実施例１～４の管継手では、受口部材の抜けが生じなかった。このことから、継手本体の樹脂の荷重たわみ温度を６０℃以上にすることで、一般的な排水の熱（６０℃以下）が加えられても、受口部材の抜けを防止できることが確認された。 As a result of pouring hot water at 60°C into the inside of each pipe joint, in the pipe joint of the comparative example, the socket member came off from the joint body, but in the pipe joints of Examples 1 to 4, the socket member No omissions occurred. From this, it was confirmed that by setting the load deflection temperature of the resin in the joint body to 60°C or higher, it is possible to prevent the socket member from coming off even when the heat of general wastewater (60°C or lower) is applied. .
さらに荷重たわみ温度が９０℃以上（９５）である実施例４の管継手では、９０℃の湯を流しても、受口部材の抜けが生じなかった。このことから、荷重たわみ温度が９０℃以上の樹脂を用いて継手本体を形成すれば、厨房排水や工場機器排水等の高温排水の熱（９０℃以下）が加えられても、受口部材の抜けを防止できることが確認された。 Furthermore, in the pipe joint of Example 4 in which the deflection temperature under load was 90° C. or higher (95), the socket member did not come off even when hot water at 90° C. was poured. From this, if the joint body is formed using a resin with a load deflection temperature of 90°C or higher, the socket member will remain It was confirmed that it is possible to prevent slippage.
２ 継手本体
３ 受口部材
５ 受口
１０，１０ａ，１０ｂ 受口の内面に形成される凹凸形状部
２０，２０ａ，２０ｂ 受口部材の外面に形成される凹凸形状部
Ｔ，Ｔ１，Ｔ２，Ｔ３，Ｔ４ 管継手
Ｈ，Ｈ１，Ｈ２，Ｈ３，Ｈ４ 配管
Ｈａ 配管の外層
Ｈｂ 配管の内層
Ｓ 配管システム
2 Joint body 3 Socket member 5 Socket 10, 10a, 10b Uneven portion formed on the inner surface of the socket 20, 20a, 20b Uneven portion formed on the outer surface of the socket member T, T1, T2, T3 , T4 Pipe fitting H, H1, H2, H3, H4 Piping Ha Outer layer of piping Hb Inner layer of piping S Piping system
Claims (4)
前記受口の内部に配置される筒状の受口部材とを有し、
前記受口の内面に形成される凹凸形状部と、前記受口部材の外面に形成される凹凸形状部とが嵌合することで、前記受口部材は前記受口に固定されており、
前記受口部材は、硬質塩化ビニル系樹脂、ABS樹脂、アクリル樹脂、PC、PET、またはウレタン樹脂から形成され、
前記継手本体は、JIS K7191のB法（荷重0.45Mpa）に準拠した荷重たわみ温度が６０℃以上である、フッ素系樹脂、PPSU、PPSまたはオレフィン系樹脂から形成されている、管継手(ただし、前記継手本体が、樹脂の発泡層を有する場合、及び、前記受口部材が透明な層であり、前記継手本体には前記受口部材の内部を目視可能な窓部が形成され、前記窓部内に前記受口部材の一部が嵌合されて表面に露出している場合を除く)。 A joint body comprising a main pipe and a socket connected to the main pipe, and an end portion of which is formed by the socket ;
a cylindrical socket member disposed inside the socket;
The socket member is fixed to the socket by fitting the uneven part formed on the inner surface of the socket and the uneven part formed on the outer surface of the socket member,
The socket member is made of hard vinyl chloride resin, ABS resin, acrylic resin, PC, PET, or urethane resin,
The fitting body is a pipe fitting made of fluororesin, PPSU, PPS, or olefin resin, which has a deflection temperature under load of 60°C or higher in accordance with JIS K7191 B method (load 0.45 MPa) (however, In the case where the joint body has a resin foam layer, and the socket member is a transparent layer, a window portion is formed in the joint body through which the inside of the socket member can be visually viewed, and the inside of the window portion is formed. (Excluding cases where a part of the socket member is fitted and exposed on the surface ).
前記継手本体は、前記JIS K7191のB法（荷重0.45Mpa）に準拠した荷重たわみ温度が６０℃以上である、オレフィン系樹脂から形成されている、請求項１に記載の管継手。 The socket member is made of ABS resin, acrylic resin, PC, PET, or urethane resin,
2. The pipe joint according to claim 1, wherein the joint body is made of an olefin resin having a deflection temperature under load of 60° C. or higher according to method B of JIS K7191 (load: 0.45 MPa).
前記受口部材の内部に挿入される配管とを備え、
前記配管は、少なくとも、塩化ビニル系樹脂からなる外層と、 オレフィン系樹脂からなる内層とを備え、
前記配管の外層と前記受口部材とが、接着接合されている、配管システム。 The pipe joint according to any one of claims 1 to 3,
and piping inserted into the interior of the socket member,
The piping includes at least an outer layer made of vinyl chloride resin and an inner layer made of olefin resin,
A piping system, wherein the outer layer of the piping and the socket member are adhesively bonded .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019063824A JP7453746B2 (en) | 2019-03-28 | 2019-03-28 | fittings and piping systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019063824A JP7453746B2 (en) | 2019-03-28 | 2019-03-28 | fittings and piping systems |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2020165449A JP2020165449A (en) | 2020-10-08 |
| JP7453746B2 true JP7453746B2 (en) | 2024-03-21 |
Family
ID=72715883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2019063824A Active JP7453746B2 (en) | 2019-03-28 | 2019-03-28 | fittings and piping systems |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP7453746B2 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005052638A (en) | 2003-07-18 | 2005-03-03 | Sekisui Chem Co Ltd | Sealed vessel and vacuum specimen collection vessel |
| JP2010158865A (en) | 2009-01-09 | 2010-07-22 | Sekisui Chem Co Ltd | Mold for injection molding |
| JP2011002012A (en) | 2009-06-18 | 2011-01-06 | Sekisui Chem Co Ltd | Pipe joint structure |
| JP2018169005A (en) | 2017-03-30 | 2018-11-01 | 積水化学工業株式会社 | Pipe joint |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0557575U (en) * | 1991-11-07 | 1993-07-30 | 日立金属株式会社 | Composite pipe |
-
2019
- 2019-03-28 JP JP2019063824A patent/JP7453746B2/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005052638A (en) | 2003-07-18 | 2005-03-03 | Sekisui Chem Co Ltd | Sealed vessel and vacuum specimen collection vessel |
| JP2010158865A (en) | 2009-01-09 | 2010-07-22 | Sekisui Chem Co Ltd | Mold for injection molding |
| JP2011002012A (en) | 2009-06-18 | 2011-01-06 | Sekisui Chem Co Ltd | Pipe joint structure |
| JP2018169005A (en) | 2017-03-30 | 2018-11-01 | 積水化学工業株式会社 | Pipe joint |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2020165449A (en) | 2020-10-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2021148277A (en) | Pipe joint, piping and piping system | |
| AU2010266736B2 (en) | Self restrained ductile iron fitting | |
| US10107427B2 (en) | Secured in place gasket for sealing plastic pipelines, method of manufacture and method of installation | |
| ATE512331T1 (en) | INTEGRAL PIPE AND FITTING ASSEMBLY MADE OF POLYMER MATERIAL AND PRODUCTION METHOD THEREOF | |
| JP2020165528A (en) | Pipe joint and piping system | |
| US11365839B2 (en) | Sealing and restraining gasket for use in plastic pipelines | |
| US20180245727A1 (en) | Sealing Joint for Low Pressure Pipe Systems and Method of Manufacture | |
| US12007056B2 (en) | Method of manufacturing a two component sealing gasket for plastic pipe | |
| JP7453746B2 (en) | fittings and piping systems | |
| KR100854316B1 (en) | Pipe with expending end for connecting | |
| JP7120829B2 (en) | How to connect multi-layer pipes | |
| JP2021167655A (en) | Pipe joint, piping and piping system | |
| JP6809842B2 (en) | Multi-layer pipe and piping | |
| JP2022049982A (en) | Pipe joint, piping and piping system | |
| JP7480006B2 (en) | Socket member for multi-layer joint, multi-layer joint and piping system | |
| JP6502639B2 (en) | Piping system | |
| JP6397280B2 (en) | Multilayer pipe | |
| JPH11223283A (en) | Vinyl chloride pipe line constituting member | |
| JP7136596B2 (en) | How to connect multi-layer pipes | |
| JP2010159813A (en) | Resin pipe with joint | |
| JP2017133692A (en) | Pipe joint | |
| JPH03184817A (en) | Multi-layer tube joint | |
| JP2020143713A (en) | Manufacturing method of fusion pipe, and fusion pipe | |
| JP2007253424A (en) | Resin pipe for use in heating | |
| KR20140013659A (en) | Pipe with excellent surface roughness |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20211222 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20221130 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20221206 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20230509 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20230704 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20230926 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20231218 |
|
| A911 | Transfer to examiner for re-examination before appeal (zenchi) |
Free format text: JAPANESE INTERMEDIATE CODE: A911 Effective date: 20231227 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20240213 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20240308 |
|
| R151 | Written notification of patent or utility model registration |
Ref document number: 7453746 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R151 |