KR200372741Y1 - Pipe attachment - Google Patents

Pipe attachment Download PDF

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Publication number
KR200372741Y1
KR200372741Y1 KR20-2004-0030142U KR20040030142U KR200372741Y1 KR 200372741 Y1 KR200372741 Y1 KR 200372741Y1 KR 20040030142 U KR20040030142 U KR 20040030142U KR 200372741 Y1 KR200372741 Y1 KR 200372741Y1
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KR
South Korea
Prior art keywords
synthetic resin
pipe
connection
rubber packing
pipes
Prior art date
Application number
KR20-2004-0030142U
Other languages
Korean (ko)
Inventor
최수영
Original Assignee
주식회사 대현테크
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Priority to KR20-2004-0030142U priority Critical patent/KR200372741Y1/en
Application granted granted Critical
Publication of KR200372741Y1 publication Critical patent/KR200372741Y1/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F3/00—Sewer pipe-line systems
    • E03F3/04—Pipes or fittings specially adapted to sewers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L17/00—Joints with packing adapted to sealing by fluid pressure
    • F16L17/02—Joints with packing adapted to sealing by fluid pressure with sealing rings arranged between outer surface of pipe and inner surface of sleeve or socket
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00—Adjustable joints, Joints allowing movement
    • F16L27/02—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction
    • F16L27/04—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction with partly spherical engaging surfaces
    • F16L27/06—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction with partly spherical engaging surfaces with special sealing means between the engaging surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B19/00—Machines or methods for applying the material to surfaces to form a permanent layer thereon
    • B28B19/0038—Machines or methods for applying the material to surfaces to form a permanent layer thereon lining the outer wall of hollow objects, e.g. pipes

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sewage (AREA)

Abstract

본 고안은 두 합성수지 하수관의 연결부위에 연결용 합성수지관을 수팽창 돌기를 다수 구비한 고무패킹과 플랜지에 의해 밀폐형으로 결합하도록 함으로써 간단한 구조와 작업성에 의하여 합성수지 하수관의 연결을 위한 현장시공이 용이해지도록 한 합성수지 하수관의 연결구조에 관한 것이다.The present invention allows the construction of the synthetic resin sewer pipe to be easily connected by the simple structure and workability by connecting the synthetic resin pipe for connection to the joint portion of the two synthetic resin sewer pipes by a rubber packing and a flange having a plurality of water expansion protrusions. It relates to the connection structure of the synthetic resin sewer pipe.

상기한 본 고안은, 양측 끝단에 내측으로 경사지게 형성한 경사면을 갖는 연결용 합성수지관을 두 합성수지 하수관의 연결부위에 위치시키고,According to the present invention, a synthetic resin pipe for connection having an inclined surface formed to be inclined inward at both ends is positioned at a connection portion of two synthetic resin sewer pipes,

상기 연결용 합성수지관의 경사면과 접하는 경사면과 합성수지 하수관과 접하는 직면을 일체로 갖는 원주형 고무패킹의 경사면 및 직면에는 수팽창 돌기들을 다수 구비하도록 하고,On the inclined surface and the facing of the cylindrical rubber packing integrally having an inclined surface in contact with the inclined surface of the connecting synthetic resin pipe and a surface in contact with the synthetic resin sewer pipe, a plurality of water expansion protrusions are provided,

상기 고무패킹의 외면을 밀어주는 돌출부가 내주면에 원주상으로 형성된 플랜지의 외주면에는 다수의 볼트공을 원주상으로 형성하고,On the outer circumferential surface of the flange formed in a circumferential shape on the inner circumferential surface of the protrusion for pushing the outer surface of the rubber packing to form a plurality of bolt holes circumferentially,

상기 두 합성수지관의 연결부위에 연결용 합성수지관을 위치시키면서 수팽창 돌기들을 구비한 고무패킹과 플랜지에 의해 밀폐형으로 결합하도록 함으로써 간단한 구조와 작업성에 의하여 합성수지 하수관의 연결을 위한 현장시공이 용이해지도록 구성함을 특징으로 한다.By placing the synthetic resin pipe for connection at the connecting portion of the two synthetic resin pipes so that the rubber packing with the water-expansion protrusions and the flanges are combined in a hermetically sealed type to facilitate the construction of the sewage pipes by simple structure and workability. It is characterized by the configuration.

Description

합성수지 하수관의 연결구조{Pipe attachment}Connection structure of synthetic resin sewer pipe

본 고안은 합성수지 하수관의 연결구조에 관한 것으로, 상세하게는 두 합성수지 하수관의 연결부위에 연결용 합성수지관을 수팽창 돌기를 다수 구비한 고무패킹과 플랜지에 의해 밀폐형으로 결합하도록 함으로써 간단한 구조와 작업성에 의하여 합성수지 하수관의 연결을 위한 현장시공이 용이해지도록 한 합성수지 하수관의 연결구조에 관한 것이다.The present invention relates to a connection structure of a synthetic resin sewer pipe, and in detail, by connecting the synthetic resin pipe for connection at the connection portion of the two synthetic resin sewer pipes with a rubber packing and a flange having a plurality of water-expansion protrusions in a hermetically sealed structure and workability. The present invention relates to a connection structure of a synthetic resin sewer pipe to facilitate the construction of the site for the connection of the synthetic resin sewer pipe.

일반적으로 토목용관, 오,폐수관, 상,하수관으로 사용되는 합성수지관은 지하에 매설 사용된다.In general, synthetic resin pipes used for civil engineering pipes, sewage, wastewater pipes, water and sewage pipes are buried underground.

이러한 합성수지관의 연결 방법을 보면 스테인레스 밴드를 이용하여 관과 관의 단부를 연결하는 방법과, 메시형태의 열선으로 연결하고자 하는 관과 관 단부를 용융 접착시키는 전기 융착 방법과, 관 단부에 형성된 플랜지 부분에 체결부재를 나사 결합하는 나사 체결 방법 등이 널리 사용되고 있다.The method of connecting the synthetic resin tube is a method of connecting the end of the tube and the tube by using a stainless band, an electric fusion method of fusion bonding the tube and the tube end to be connected by a mesh-type hot wire, and the flange formed on the tube end Screw fastening method for screwing the fastening member to the portion is widely used.

이러한 연결방법을 통하여 관과 관을 연결할 수 있다는 이점은 있으나, 종래 합성수지관 연결방법은 일일이 스테인레스 밴드를 연결하거나 또는 관과 관 단부를 용융접착하거나 또는 나사 결합하는 형태이기 때문에 연결과정이 번거롭고 불편할 뿐 아니라 기밀성이 불확실 하다는 단점이 있었다.There is an advantage that can be connected to the pipe through the connection method, but the conventional synthetic resin pipe connection method is a form of connecting the stainless steel band or melt-glued or screwed pipe and pipe end one by one, the connection process is cumbersome and inconvenient There was a disadvantage, however, of confidentiality.

또한, 계절의 변화에 따라 신축에 의한 영향이 가장 큰 합성수지관의 특성상 합성수지관의 신장, 수축에 의해 관 연결 부위가 파손되거나 이탈되어 제 기능을 수행하지 못하는 제반 문제점이 발생되었다.In addition, due to the nature of the synthetic resin pipe with the greatest influence by the change of the season due to the expansion and contraction of the synthetic resin pipe due to the breakage or detachment of the pipe connection site has caused various problems that can not function.

그에 따라 종래에는 도 1에 도시한 것과 같이, 합성수지관(120)(120a) 양단부에 고무패킹(130)이 삽입 고정되는 결합홈(121)을 형성하고,Accordingly, in the related art, as shown in FIG. 1, a coupling groove 121 into which the rubber packing 130 is inserted and fixed at both ends of the synthetic resin pipe 120 and 120a is formed.

관 연결 작업시 상기한 결합홈(121)에 고무패킹(130)을 삽입 고정함과 동시에 별도의 연결관(110) 내부에 합성수지관(120)(120a)이 밀어 끼워지도록 함으로써, 관과 관의 연결작업이 간편하게 이루어지게 함은 물론 기밀성이 확보될 수 있도록 한 합성수지관 연결구조가 제안되었다.At the same time, the rubber packing 130 is inserted into and fixed to the coupling groove 121 at the time of the pipe connection work, so that the synthetic resin pipes 120 and 120a are pushed into the separate connection pipe 110, thereby preventing the A synthetic resin pipe connecting structure has been proposed to simplify the connection work and to secure airtightness.

그러나 상기와 같은 종래의 합성수지관 연결구조에 의하여서는 연결관(110)의 양측에서 두 합성수지관(120)(120a)이 강제로 밀어서 끼워지는 상태이므로 열팽창에 의해 늘어나거나 줄어드는 편차와 외압에 의하여 이동이 발생하여 고무패킹(130)이 위치를 이탈하게 되면 밀폐상태가 깨지게 되고, 그로 인해 연결부위에서 누수가 발생하게 되는 등의 문제점이 있었다.However, according to the conventional synthetic resin pipe connection structure as described above, since the two synthetic resin pipes 120 and 120a are forcibly pushed in from both sides of the connection pipe 110, they move due to the deviation and external pressure that increase or decrease due to thermal expansion. When this occurs, when the rubber packing 130 is out of position, the sealed state is broken, thereby causing a problem such as leakage occurs at the connection portion.

이에 본 고안은 상기한 바와 같은 종래의 문제점을 해소시키기 위하여 안출된 것으로, 두 합성수지 하수관의 연결부위에 연결용 합성수지관을 수팽창 돌기를 다수 구비한 고무패킹과 플랜지에 의해 밀폐형으로 결합하도록 함으로써 간단한 구조와 작업성에 의하여 합성수지 하수관의 연결을 위한 현장시공이 용이해지도록 한 합성수지 하수관의 연결구조를 제공하는 것을 그 목적으로 한다.The present invention has been devised to solve the conventional problems as described above, by simply connecting the synthetic resin pipe for connection to the connection portion of the two synthetic resin sewer pipes in a closed type by a rubber packing and a flange having a plurality of water expansion protrusions. It is an object of the present invention to provide a connection structure of a synthetic resin sewage pipe which facilitates the construction of the site for the connection of the synthetic resin sewer pipe by the structure and workability.

상기 목적을 달성하기 위한 본 고안의 합성수지 하수관의 연결구조는 양측 끝단에 내측으로 경사지게 형성한 경사면을 갖는 연결용 합성수지관을 두 합성수지 하수관의 연결부위에 위치시키고,The connection structure of the synthetic resin sewer pipe of the present invention for achieving the above object is located at the connecting portion of the two synthetic resin sewer pipe connecting the synthetic resin pipe having an inclined surface formed inclined inward at both ends,

상기 연결용 합성수지관의 경사면과 접하는 경사면과 합성수지 하수관과 접하는 직면을 일체로 갖는 원주형 고무패킹의 경사면 및 직면에는 수팽창 돌기들을 다수 구비하도록 하고,On the inclined surface and the facing of the cylindrical rubber packing integrally having an inclined surface in contact with the inclined surface of the connecting synthetic resin pipe and a surface in contact with the synthetic resin sewer pipe, a plurality of water expansion protrusions are provided,

상기 고무패킹의 외면을 밀어주는 돌출부가 내주면에 원주상으로 형성된 플랜지의 외주면에는 다수의 볼트공을 원주상으로 형성하고,On the outer circumferential surface of the flange formed in a circumferential shape on the inner circumferential surface of the protrusion for pushing the outer surface of the rubber packing to form a plurality of bolt holes circumferentially,

상기 두 합성수지관의 연결부위에 연결용 합성수지관을 위치시키면서 수팽창 돌기들을 구비한 고무패킹과 플랜지에 의해 밀폐형으로 결합하도록 함으로써 간단한 구조와 작업성에 의하여 합성수지 하수관의 연결을 위한 현장시공이 용이해지도록 구성함을 특징으로 한다.By placing the synthetic resin pipe for connection at the connecting portion of the two synthetic resin pipes so that the rubber packing with the water-expansion protrusions and the flanges are combined in a hermetically sealed type to facilitate the construction of the sewage pipes by simple structure and workability. It is characterized by the configuration.

도 1은 종래 합성수지관의 연결구조를 나타낸 단면도.1 is a cross-sectional view showing a connection structure of a conventional synthetic resin tube.

도 2는 본 고안 합성수지 하수관의 연결구조를 나타낸 단면도.Figure 2 is a cross-sectional view showing a connection structure of the present invention synthetic resin sewer pipe.

도 3은 본 고안의 일부를 확대하여 나타낸 확대 단면도.Figure 3 is an enlarged cross-sectional view showing an enlarged portion of the present invention.

* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

1 : 연결용 합성수지관 2, 3, 31 : 경사면1: Synthetic resin pipe 2, 3, 31: slope

10, 20 : 합성수지 하수관 30 : 고무패킹10, 20: synthetic resin sewer pipe 30: rubber packing

34, 35 : 수팽창 돌기 40 : 플랜지34, 35: water expansion projection 40: flange

41 : 돌출부41: protrusion

이하, 첨부된 도면을 참조하여 본 고안의 바람직한 실시예를 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings illustrating a preferred embodiment of the present invention.

본 고안에 따른 합성수지 하수관의 연결구조는,The connection structure of the synthetic resin sewer pipe according to the present invention,

양측 끝단에 내측으로 경사지게 형성한 경사면(2)(3)을 갖는 연결용 합성수지관(1)을 두 합성수지 하수관(10)(20)의 연결부위에 위치시키고,Connecting synthetic resin pipe (1) having inclined surfaces (2) and (3) formed inclined inward at both ends is located at the connecting portion of the two synthetic resin sewer pipe (10) (20),

상기 연결용 합성수지관(1)의 경사면(2)(3)과 접하는 경사면(31)과 합성수지 하수관(10)(20)의 외면과 접하는 직면(32)을 일체로 갖는 원주형 고무패킹(30)의 경사면(31) 및 직면(32)에는 수팽창 돌기(34)(35)들을 다수 구비하도록 하고,Cylindrical rubber packing 30 having an inclined surface 31 in contact with the inclined surfaces 2 and 3 of the connecting synthetic resin pipe 1 and a face 32 in contact with the outer surface of the synthetic resin sewer pipe 10 and 20. The inclined surface 31 and the facing 32 of the water expansion projections 34 and 35 to be provided with a plurality,

상기 고무패킹(30)의 외면(33)을 밀어주는 돌출부(41)가 내주면에 원주상으로 형성된 플랜지(40)의 외주면에는 다수의 볼트공(42)을 원주상으로 형성하고,A plurality of bolt holes 42 are formed in a circumferential shape on the outer circumferential surface of the flange 40 formed in a circumferential shape on the inner circumferential surface of the protrusion 41 for pushing the outer surface 33 of the rubber packing 30.

상기 두 합성수지관(10)(20)의 연결부위에 연결용 합성수지관(1)을 위치시키면서 수팽창 돌기(34)(35)들을 구비한 고무패킹(30)과 플랜지(40)에 의해 밀폐가 유지되도록 하면서 볼트(43)와 너트(44)로 결합하도록 구성한 것이다.The rubber packing 30 and the flange 40 provided with the water-expanding protrusions 34 and 35 while placing the connecting synthetic resin tube 1 at the connection portion of the two synthetic resin tubes 10 and 20 are sealed. It is configured to be coupled to the bolt 43 and the nut 44 while being maintained.

상기와 같이 구성한 본 고안의 합성수지 하수관의 연결구조의 설치상태를 상세히 기술하면 다음과 같다.Referring to the installation state of the connection structure of the synthetic resin sewer pipe of the present invention configured as described above in detail as follows.

연결하고자 하는 두 합성수지 하수관(10)(20)의 연결부위에 위치시키는 연결용 합성수지관(1)에는 양측 끝단에 내측으로 경사지게 경사면(2)(3)을 형성한다.The connecting synthetic resin pipe (1) positioned at the connection portion of the two synthetic resin sewer pipes (10, 20) to be connected to form inclined surfaces (2) (3) inclined inward at both ends.

상기 연결용 합성수지관(1)의 경사면(2)(3)과 접하는 경사면(31)을 갖는 고무패킹(30)에는 상기 합성수지 하수관(10)(20)의 외면과 접하는 직면(32)을 일체로 형성하여 원주형 고무패킹(30)를 압축함에 따라 밀폐가 이루어지도록 한다.The rubber packing 30 having the inclined surface 31 in contact with the inclined surfaces 2 and 3 of the synthetic resin pipe 1 for connection is integrally provided with a face 32 in contact with the outer surface of the synthetic resin sewer pipe 10, 20. It is formed so that the sealing is made by compressing the cylindrical rubber packing (30).

상기 원주형 고무패킹(30)의 경사면(31) 및 직면(32)에는 수팽창 돌기(34)(35)들을 다수 구비하도록 하여 설치된 후 합성수지 하수관(10)(20)을 통하여 물이 흐르도록 하면, 물과 접하면 팽창하는 수팽창 돌기(34)(35)에 의하여 더욱 강력한 기밀이 유지되도록 한다.If the inclined surface (31) and the facing (32) of the cylindrical rubber packing 30 is provided with a plurality of water expansion projections (34, 35) and then the water flows through the synthetic resin sewer pipe (10) (20) In addition, the water-expanding protrusions 34 and 35 expand in contact with water to maintain a stronger airtightness.

상기 고무패킹(30)의 외면(33)을 밀어주는 돌출부(41)가 내주면에 원주상으로 형성된 플랜지(40)의 외주면에는 다수의 볼트공(42)을 원주상으로 형성한다.A plurality of bolt holes 42 are circumferentially formed on the outer circumferential surface of the flange 40 formed in a circumferential shape on the inner circumferential surface of the protrusion 41 for pushing the outer surface 33 of the rubber packing 30.

그러므로 상기 두 합성수지관(10)(20)의 연결부위에 연결용 합성수지관(1)을 위치시키면서 수팽창 돌기(34)(35)들을 구비한 고무패킹(30)과 플랜지(40)를 적당히 베열한 후, 볼트(43)와 너트(44)로 두 플랜지(40)의 사이가 줄어들도록 조여 주게 되면 플랜지(40)의 돌출부(41)가 고무패킹(30)의 외면(33)을 밀어주게 되고, 그에 따라 고무패킹(30) 및 수팽창 돌기(34)(35)가 연결용 합성수지관(1)과 두 합성수지관(10)(30)들의 연결부위를 완번히 밀폐되도록 함으로써 간단하고 안전한 시공이 가능하도록 한다.Therefore, the rubber packing 30 and the flange 40 having the water-expanding protrusions 34 and 35 are appropriately placed while placing the connecting synthetic resin tube 1 at the connection portion of the two synthetic resin tubes 10 and 20. After opening, the bolt 43 and the nut 44 are tightened to reduce the gap between the two flanges 40, and the protrusion 41 of the flange 40 pushes the outer surface 33 of the rubber packing 30. Therefore, the rubber packing 30 and the water-expandable protrusions 34 and 35 are simply and securely constructed by completely sealing the connection portion between the connecting synthetic resin tube 1 and the two synthetic resin tubes 10 and 30. Make it possible.

이상에서 상세히 설명한 바와 같이 본 고안에 따른 합성수지 하수관의 연결구조에 의하여서는, 양 끝단에 경사면을 갖는 연결용 합성수지관을 두 합성수지 하수관의 연결부위에 위치시키고,As described in detail above, according to the connection structure of the synthetic resin sewer pipe according to the present invention, the synthetic resin pipes having inclined surfaces at both ends are positioned at the connection portions of the two synthetic resin sewer pipes,

상기의 경사면과 접하는 경사면과 합성수지 하수관과 접하는 직면을 일체로 갖는 원주형 고무패킹에는 수팽창 돌기들을 다수 구비하도록 하고,The cylindrical rubber packing having the inclined surface in contact with the inclined surface and the surface in contact with the synthetic resin sewer pipe is provided with a plurality of water-expanding protrusions,

상기 고무패킹을 밀어주는 돌출부가 형성된 플랜지의 외주면에는 다수의 볼트공을 원주상으로 형성하고,On the outer circumferential surface of the flange formed with a protrusion for pushing the rubber packing is formed a plurality of bolt holes circumferentially,

상기 두 합성수지관의 연결부위에 연결용 합성수지관을 위치시키면서 수팽창 돌기들을 구비한 고무패킹과 플랜지에 의해 밀폐형으로 결합하도록 함으로써 간단한 구조와 작업성에 의하여 합성수지 하수관의 연결을 위한 현장시공이 용이해지는 효과가 있다.The site construction for the connection of the synthetic resin sewer pipes is facilitated by simple structure and workability by placing the synthetic resin pipes for connection at the connection parts of the two synthetic resin pipes and by sealing them by rubber packing and flanges having water expansion protrusions. There is.

Claims (2)

양측 끝단에 경사지게 형성한 경사면(2)(3)을 갖는 연결용 합성수지관(1)과,A synthetic resin pipe (1) for connection having inclined surfaces (2) and (3) formed inclined at both ends, 상기 연결용 합성수지관(1)의 경사면(2)(3)과 접하는 경사면(31)과 합성수지 하수관(10)(20)의 외면과 접하는 직면(32)을 일체로 갖는 원주형 고무패킹(30)과,Cylindrical rubber packing 30 having an inclined surface 31 in contact with the inclined surfaces 2 and 3 of the connecting synthetic resin pipe 1 and a face 32 in contact with the outer surface of the synthetic resin sewer pipe 10 and 20. and, 상기 고무패킹(30)의 외면(33)을 밀어주는 돌출부(41)가 내주면에 원주상으로 형성된 플랜지(40)와,A flange (40) formed in the circumference of the protrusion (41) for pushing the outer surface (33) of the rubber packing (30), 상기 플랜지(40)의 볼트공(42)을 서로 결합하면서 밀폐가 유지되도록 하는 볼트(43) 및 너트(44)들로 구성한 것을 특징으로 하는 합성수지 하수관의 연결구조.Connection structure of the synthetic resin sewer pipe, characterized in that consisting of bolts (43) and nuts (44) to maintain the sealing while coupling the bolt holes (42) of the flange (40). 제 1 항에 있어서,The method of claim 1, 상기 원주형 고무패킹(30)의 경사면(31) 및 직면(32)에는 수팽창 돌기(34)(35)들을 다수 구비하도록 구성한 것을 특징으로 하는 합성수지 하수관의 연결구조.Connection structure of the synthetic resin sewer pipe, characterized in that configured to include a plurality of water-expanding projections (34, 35) on the inclined surface (31) and facing (32) of the cylindrical rubber packing (30).
KR20-2004-0030142U 2004-10-26 2004-10-26 Pipe attachment KR200372741Y1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200477781Y1 (en) * 2013-05-24 2015-07-24 서승용 Rigid inflatable boat using plastic double bellows pipe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200477781Y1 (en) * 2013-05-24 2015-07-24 서승용 Rigid inflatable boat using plastic double bellows pipe

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