KR20170127619A - Sealing cap of sewerage pipe - Google Patents

Sealing cap of sewerage pipe Download PDF

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Publication number
KR20170127619A
KR20170127619A KR1020160057908A KR20160057908A KR20170127619A KR 20170127619 A KR20170127619 A KR 20170127619A KR 1020160057908 A KR1020160057908 A KR 1020160057908A KR 20160057908 A KR20160057908 A KR 20160057908A KR 20170127619 A KR20170127619 A KR 20170127619A
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South Korea
Prior art keywords
sealing
perforation hole
sealing member
pipe
thread
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KR1020160057908A
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Korean (ko)
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KR101830851B1 (en
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오현식
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오현식
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    • 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
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/10—Means for stopping flow from or in pipes or hoses
    • F16L55/105—Closing devices introduced radially into the pipe or hose
    • 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
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/10—Means for stopping flow from or in pipes or hoses
    • F16L55/11—Plugs
    • F16L55/1108—Plugs fixed by screwing or by means of a screw-threaded ring

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Pipe Accessories (AREA)

Abstract

The present invention relates to a watertight cap for a sewer branch pipe, sealing an unnecessary drilling hole of a sewer branch pipe to be watertightly sealed. The present invention can completely seal the drilling hole (11) of the unnecessary sewer branch pipe (10) while first, second, and third sealing members (103, 104, 105) are simultaneously compressed only by fastening of a fastening nut.

Description

하수분기관 수밀캡{ SEALING CAP OF SEWERAGE PIPE}{SEALING CAP OF SEWERAGE PIPE}

본 발명은 하수분기관 수밀캡에 관한 것으로서, 더욱 상세하게는 조임너트의 체결만으로 불필요한 하수분기관의 천공구멍을 수밀되도록 확실히 밀폐시킬 수 있는 하수분기관 수밀캡에 관한 것이다.
The present invention relates to a sewage pipe watertight cap, and more particularly, to a sewage pipe watertight cap capable of tightly sealing a perforation hole of an unnecessary sewage pipe by tightening a tightening nut.

일반적으로, 콘크리트 관으로 제조된 주 하수관에 합성수지로 이루어진 분기관을 연결하여 가정에서 배출된 하수가 분기관을 통해 주 하수관으로 집수되어 오수 처리장으로 배수되게 된다.Generally, a sewage pipe discharged from a household is connected to a main sewer pipe made of a concrete pipe and collected into a main sewer pipe through a branch pipe, and drained to a sewage treatment plant.

따라서, 주 하수관에 분기관을 연결하기 위해 주 하수관에 분기관 연결용 구멍을 천공하게 되는데, 구멍의 천공위치와 천공 직경이 잘못되어 불필요한 천공구멍이 생기게 되는데 불필요한 천공구멍은 수밀되도록 밀폐시켜야 한다.Therefore, in order to connect the branch pipe to the main sewer pipe, a hole for connecting the branch pipe is drilled in the main pipe. In this case, the perforation position and the perforation diameter of the hole are wrong, and unnecessary perforation hole is formed.

불필요한 천공구멍의 밀폐구조와 밀폐작업은 도 1에 도시된 바와 같이 하수분기관(10)의 천공구멍(11)속에 구멍의 내측 주연부(11a)에 단지관(20)의 걸림턱(21)을 끼우고, 단지관(20)의 외경에 조임너트(25)를 체결하여 단지관(20)을 하수분기관(10)에 고정시킨 뒤, 단지관(20)의 내경속에 밀봉캡(22)을 끼우고, 단지관의 주위에 거푸집(23)을 설치하고 그 속에 무수축 몰탈(24)을 타설하여 밀봉시키는 기법이 주로 통용되고 있다.The sealing structure of the unnecessary perforation hole and the sealing operation is such that the engaging protrusion 21 of the pipe 20 is provided only in the inner periphery 11a of the hole in the perforation hole 11 of the sewage pipe 10 as shown in Fig. The sealing cap 22 is inserted into the inner diameter of the tube 20 only after the tube 20 is fixed to the sewage pipe 10 by fastening the tightening nut 25 to the outer diameter of the tube 20 A method of installing a mold 23 around the pipe and sealing and sealing the shrinkage mortar 24 is mainly used.

그런데, 전술한 하수분기관의 천공구멍 밀폐 방식은 시공기간이 요구되고, 시공비용이 많으며, 작업이 복잡한 단점이 있을 뿐 아니라 시간이 경과하면 단지관의 수밀상태가 불완전해지면서 누수가 발생되는 등 신뢰성 면에서도 불완전한 측면이 있다.However, the above-mentioned method of sealing the perforation hole of the sewage pipe has a disadvantage in that the construction period is required, the construction cost is high, the work is complicated, and the watertightness of the pipe becomes incomplete only after a lapse of time, There is also an incomplete aspect in terms of reliability.

본 발명은 전술한 바와 같은 문제점을 해소하기 위하여 창안하게 되었고, 괄목할 만한 성과가 있어 이를 본 발명을 통해 제안하고자 한다.
SUMMARY OF THE INVENTION The present invention has been made to overcome the above-described problems and has been accomplished remarkably, so that the present invention is proposed.

본 발명은 불필요하게 생긴 하수분기관의 천공구멍이 수밀되도록 밀폐시킴에 있어 수밀이 매우 신속하게 할 수 있고, 수밀에 따른 비용이 매우 저렴하며, 수밀에 따른 신뢰성을 확실하게 확보할 수 있는 하수분기관 수밀캡을 제공하려는 것이다.The present invention relates to a sewage disposal apparatus and a sewage disposal apparatus, which can achieve watertightness very quickly in sealing a perforation hole of an unnecessarily sewage distributor in a watertight manner, a cost due to watertightness is very low, To provide an engine watertight cap.

본 발명의 목적에 따른 해결수단으로는,As a solution to the object of the present invention,

소정길이로 연장된 나사산을 갖추고, 하수분기관의 천공구멍속으로 삽입되는 테이퍼형상으로 이루어진 헤드와;A head having a tapered shape and having a thread extending to a predetermined length and inserted into the perforation hole of the sewage pipe;

상기 나사산의 외경에 제1 내지 제3 실링부재를 차례로 조립하고 상기 나사산에 조임너트를 나선체결하되 그 체결에 따라 상기 헤드에 의해 확경되면서 상기 천공구멍의 내측 주연부를 수밀가능하게 밀폐시키는 고탄성 고무재로 이루어진 제1 실링부재와, 압착에 의해 상기 천공구멍의 내경을 수밀시키는 고탄성 고무재로 이루어진 제2 실링부재와, 압착에 의해 상기 천공구멍의 외측 주연부를 밀폐시키는 고탄성 고무재로 이루어진 제3 실링부재로 구현되는 것에 특징이 있다.The first to third sealing members are sequentially assembled to the outer diameter of the thread, and a tightening nut is screwed into the thread, and a high-elasticity rubber material which tightly seals the inner peripheral portion of the perforation hole while being enlarged by the head, A second sealing member made of a high-elasticity rubber material that water-tightens the inside diameter of the perforation hole by compression bonding; and a third sealing member made of a high-elasticity rubber material for sealing the outer peripheral portion of the perforation hole by compression, And is implemented as a member.

전술한 제1 내지 제3 실링부재는 고탄성 고무재로 이루어진 것에 특징이 있다. The above-described first to third sealing members are characterized by being made of a highly elastic rubber material.

상기한 헤드와 제1 및 제2 실링부재는 천공구멍속으로 진입할 수 있는 직경으로 이루어지고, 제3 실링부재는 천공구멍속으로 진입할 수 없는 직경으로 이루어진 것에 특징이 있다.The head and the first and second sealing members are formed to have a diameter capable of entering into the perforation hole and the third sealing member has a diameter that can not enter into the perforation hole.

상기한 제1 내지 제3 실링부재는 조임너트 체결시 상호 긴밀히 압착되어 천공구멍을 밀폐시키는 것에 특징이 있다.The first through third sealing members are tightly pressed against each other at the time of tightening the tightening nuts, thereby sealing the perforation holes.

상기 제1 및 제3 실링부재는 조임너트의 체결에 따라 천공구멍의 내/외측 주연부를 수밀되도록 밀폐시키고 제2 실링부재는 천공구멍의 내경을 수밀되도록 밀폐시키는 것에 특징이 있다.The first and third sealing members seal the inner and outer peripheries of the perforation hole with water tightness according to the fastening of the tightening nut, and the second sealing member seals the inner perimeter of the perforation hole with water tightness.

상기 조임너트와 제3 실링부재사이에 제3 실링부재의 외경보다 큰 가압부재가 더 결합하여 조임너트의 체결력이 제3 실링부재에 고르게 전달되도록 한 것에 특징이 있다.
A pressing member larger than the outer diameter of the third sealing member is further engaged between the tightening nut and the third sealing member so that the tightening force of the tightening nut is uniformly transmitted to the third sealing member.

본 발명은 제1 내지 제3 실링부재를 차례로 나사산에 끼운 헤드를 하수분기관의 천공구멍속으로 끼워넣고 나사산에 조임너트를 체결하면 조임너트의 체결력에 의해 제1 내지 제3 실링부재가 압축되면서 천공구멍의 양 주연부와 내경이 수밀가능하게 밀폐되므로 신속하게 현장에서 바로 불필요한 천공구멍를 밀폐시킬 수 있다.
In the present invention, when the head, in which the first to third sealing members are successively threaded, is inserted into the perforation hole of the sewage pipe and the tightening nut is fastened to the thread, the first to third sealing members are compressed by the tightening force of the tightening nut Since both the peripheral edge and the inner diameter of the perforated hole are watertightly sealed, the unnecessary perforated hole can be quickly sealed immediately in the field.

도 1은 종래의 하수분기관 수밀캡을 예시한 요부 단면도이다.
도 2는 본 발명에 따른 하수분기관 수밀캡을 예시한 요부 분해 단면도이다.
도 3과 도 4는 도 2에 도시된 수밀캡의 시공 전/후를 예시한 하수관의 요부 단면도이다.1 is a cross-sectional view showing a main portion illustrating a conventional sewage pipe watertight cap.
Fig. 2 is a fragmented sectional view showing a sewer pipe watertight cap according to the present invention.
3 and 4 are cross-sectional views of the main part of the sewer pipe illustrating the before / after construction of the watertight cap shown in Fig.

이하, 본 발명에 따른 하수분기관 수밀캡의 가장 바람직한 실시예를 첨부된 도면을 참조하여 상세히 설명한다.BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the most preferred embodiment of a sewage pipe watertight cap according to the present invention will be described in detail with reference to the accompanying drawings.

참고로, 이하에서 천공구멍의 내측이라 함은 하수분기관의 내경측을 의미하고 외측이라 함은 하수분기관의 외경측을 의미한다.For reference, the inside of the perforation hole means the inside diameter side of the sewage pipe and the outside side means the outside diameter side of the sewage pipe.

도 2는 본 발명의 수밀캡을 하수분기관에 설치하는 것을 예시적으로 도시한 분기관의 천공구멍의 단면도로, 수밀캡(100)은 소정길이로 연장된 나사산(102)을 구비하는 테이퍼형상의 헤드(101)와 상기 나사산(102)이 관통하는 관통구멍(103a)(104a)(105a)을 각각 구비하는 제1 내지 제3 실링부재(103~105) 및 상기 나사산(102)에 나선결합되는 조임너트(106)를 포함하여 구성된다.2 is a sectional view of a perforation hole of a branch pipe exemplarily showing the watertight cap of the present invention installed in a sewage pipe. The watertight cap 100 has a tapered shape having a thread 102 extending to a predetermined length First to third sealing members 103 to 105 having through holes 103a and 104a and 105a through which the head 101 of the screw 102 and the thread 102 pass, And a tightening nut 106 which is fastened to the fastening nut 106.

상기한 헤드(101)는 천공구멍(11)의 내경(11c)보다 작은 외경으로 이루어져 있는데, 나사산(102)에서 멀어지는 방향으로 점점 외경이 커지는 형상으로 이루어져 있다.The head 101 has an outer diameter smaller than the inner diameter 11c of the perforation hole 11 and has a shape increasing in outer diameter in the direction away from the thread 102. [

전술한 제1 내지 제3 실링부재(103~105)는 고탄성 고무재질로 이루어져 있는데, 제1 실링부재(103)의 내경은 테이퍼형상으로 이루어진 헤드(101)처럼 테이퍼진 형상으로 이루어져 있고, 제2 실링부재(104)는 천공구멍(11)의 내경(11c)과 같은 외경을 지니는 원반형상으로 이루어져 있으며, 제3 실링부재는 천공구멍(11)의 내경(11c)보다 큰 외경을 지니는 원반형상으로 이루어져 있다.The first to third sealing members 103 to 105 are made of a highly elastic rubber material. The inner diameter of the first sealing member 103 is tapered like a tapered head 101, The sealing member 104 is formed in a disc shape having an outer diameter equal to the inner diameter 11c of the perforation hole 11 and the third sealing member is formed in a disc shape having an outer diameter larger than the inner diameter 11c of the perforation hole 11 consist of.

전술한 제1 내지 제3 실링부재(103~105)는 도 2에 나사산(102)과 분리되게 도시되어 있으나 나사산(102)이 각 관통구멍(103a,104a,105a)을 차례로 관통되게 결합되고, 제1 내지 제3 실링부재(103~105)가 빠지지 않도록 나사산(102)의 단부에 조임너트(106)가 나선결합되어 있다.The first to third sealing members 103 to 105 described above are shown separated from the thread 102 in FIG. 2, but the thread 102 is coupled through the through holes 103a, 104a, and 105a, Tightening nuts 106 are spirally coupled to the ends of the threads 102 so that the first to third sealing members 103 to 105 are not removed.

그러므로 전술한 제1 내지 제3 실링부재(103~105)는 헤드(101)의 나사산(102)에 결합된 조임너트(106)에 의해 나사산(102)에서 분리되지 않도록 조립된 상태로 사용될 수 있고, 조임너트의 나선체결시 제1 내지 제3 실링부재가 서로 긴밀히 압축되면서 천공구멍을 밀폐시킬 수 있게 된다.The first to third sealing members 103 to 105 described above can be used in an assembled state so as not to be separated from the thread 102 by the tightening nut 106 coupled to the thread 102 of the head 101 , The first to third sealing members are tightly compressed with each other when the tightening nut is tightened, so that the perforation hole can be sealed.

전술한 바와 같이 구성된 본 발명의 수밀캡(100)을 하수분기관(10)의 천공구멍(11)을 밀봉시키기 위한 사용예를 첨부된 도면을 참조하여 설명한다.The use of the watertight cap 100 of the present invention constructed as described above for sealing the perforation hole 11 of the sewage pipe 10 will be described with reference to the accompanying drawings.

도 3과 도 4를 참조하면, 도 3과 도 4는 수밀캡(100)의 시공 전/후를 예시한 천공구멍(11)의 단면도로, 도 3에 도시된 바와 같이 헤드(101)를 천공구멍(11)속으로 완전히 삽입한 뒤 조임너트(106)를 체결하면, 그 체결력에 의해 제1 내지 제3 실링부재(103~105)가 압축되면서 제1 실링부재(103)는 외경이 확장되고, 제2 및 제3 실링부재(104)(105)는 각각 압축되게 된다.Referring to FIGS. 3 and 4, FIGS. 3 and 4 are cross-sectional views of the through hole 11 illustrating the watertight cap 100 before and after the operation. As shown in FIG. 3, When the tightening nut 106 is completely inserted into the hole 11, the first to third sealing members 103 to 105 are compressed by the tightening force so that the outer diameter of the first sealing member 103 is expanded The second and third sealing members 104 and 105, respectively, are compressed.

이때 제1 실링부재(103)는 헤드(101)의 테이퍼 형상에 의해 제1 실링부재의 내경이 확경되면서 하수분기관(10)의 내경측에 마련된 천공구멍(11)의 주연부(11a)를 밀봉하고, 제2 실링부재(104)는 압축에 의해 외경이 팽창되면서 천공구멍(11)의 내경(11c)을 수밀가능하게 밀봉하며, 제3 실링부재(105)는 압축에 의해 하수분기관(10)의 외경에 마련된 천공구멍(11)의 주연부(11b)를 수밀되도록 밀봉한다.At this time, the first sealing member 103 seals the peripheral edge 11a of the perforation hole 11 provided on the inner diameter side of the sewage pipe 10 while the inner diameter of the first sealing member is enlarged by the tapered shape of the head 101, The second sealing member 104 is expanded in its outer diameter by compression and seals the inner diameter 11c of the perforation hole 11 in a watertight manner and the third sealing member 105 is compressed by the compression of the sewage pipe 10 And the periphery 11b of the perforation hole 11 provided at the outer diameter of the outer periphery of the hole 11b is sealed tightly.

전술한 조임너트(106)는 나선 체결에 따른 체결력이 제3 실링부재(105)에 고르게 가해지도록 조임너트와 제3 실링부재 사이에 제3 실링부재(105)의 외경보다 큰 외경을 지닌 가압부재(106a)를 더 포함할 수 있다.The tightening nut 106 described above is provided with a pressing member having an outer diameter larger than the outer diameter of the third sealing member 105 between the tightening nut and the third sealing member so that the fastening force due to the screwing is evenly applied to the third sealing member 105. [ Gt; 106a < / RTI >

상기 가압부재(106a)는 조임너트(106)와 일체형으로 채용해도 되고, 분리하여 채용해도 된다.The pressing member 106a may be integrally formed with the tightening nut 106 or may be separately used.

이상에서 설명한 바와 같이, 본 발명은 제1 내지 제3 실링부재(103~105)가 동시에 압축되면서 도 4에 도시된 바와 같이 하수분기관(10)의 천공구멍(11)의 양 주연부(11a,11b)와 내경(11c)을 수밀되게 확실히 밀폐시키는 것이 가능해진다.As described above, according to the present invention, since the first to third sealing members 103 to 105 are compressed simultaneously, the two peripheral edges 11a, 11b of the perforation hole 11 of the sewage pipe 10, 11b and the inner diameter 11c can be sealed tightly and tightly.

따라서, 본 발명은 하수분기관의 천공구멍을 밀폐시킴에 있어 조임너트의 체결만으로 간편하게 천공구멍이 밀폐되므로 종래에서와 같이 천공구멍에 단지관의 걸림턱을 끼우고, 단지관의 주위에 거푸집을 설치한 뒤 무수축 몰탈을 타설하여 단지관을 밀폐시키는 구성에 비해 매우 간소하고 용이하게 밀폐시킬 수 있는 장점이 있다. Therefore, in the present invention, in closing the perforation hole of the sewage pipe, the perforation hole is simply closed by fastening the tightening nut. Therefore, as in the prior art, There is an advantage that it is very simple and easy to seal the pipe as compared with the construction in which the pipe is laid by placing the non-shrinkage mortar after installation.

이상에서 본 발명은 예를 통해 설명하였으나 이는 발명의 이해를 돕기 위한 것일 뿐 본 발명을 통해 통상의 지식을 가진 자라면 다양한 변경예와 응용예를 실시할 수 있을 것이나, 이러한 변경과 응용예는 본 발명자가 의도하는 진정한 의미의 기술적 사상과 이하에서 정의하는 특허청구범위의 범주에 포함된다는 것을 미리 밝혀두는 바이다.While the present invention has been described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. It is intended that the same is included within the scope of the claims as defined below and the true meaning of the technical idea intended by the inventor.

10: 하수분기관 11: 천공구멍
11a: 천공구멍의 내측 주연부 11b: 천공구멍의 외측 주연부
11c: 천공구멍의 내경 100: 수밀캡
101: 헤드 102: 나사산
103a, 104a, 105a: 제1 내지 제3 실링부재의 각 관통구멍
103: 제1 실링부재 104: 제2 실링부재
105: 제3 실링부재 106: 조임너트10: sewage pipe 11: perforated hole
11a: inner periphery of the perforation hole 11b: outer periphery of the perforation hole
11c: inner diameter of perforation hole 100: watertight cap
101: head 102:
103a, 104a, 105a: the through-holes of the first to third sealing members
103: first sealing member 104: second sealing member
105: third sealing member 106: tightening nut

Claims (2)

소정길이로 연장된 나사산을 갖추고 하수분기관의 천공구멍속으로 삽입되는 테이퍼형상으로 이루어진 헤드와;
상기 나사산의 외경에 제1 내지 제3 실링부재를 차례로 조립하고 상기 나사산에 조임너트를 나선체결하되 그 체결에 따라 상기 헤드에 의해 확경되면서 상기 천공구멍의 내측 주연부를 수밀가능하게 밀폐시키는 고탄성 고무재로 이루어진 제1 실링부재와, 압착에 의해 상기 천공구멍의 내경을 수밀시키는 고탄성 고무재로 이루어진 제2 실링부재와, 압착에 의해 상기 천공구멍의 외측 주연부를 밀폐시키는 고탄성 고무재로 이루어진 제3 실링부재로 구성된 것을 특징으로 하는 하수분기관 수밀캡.A head having a tapered shape inserted into the perforation hole of the sewage pipe with a thread extending in a predetermined length;
The first to third sealing members are sequentially assembled to the outer diameter of the thread, and a tightening nut is screwed into the thread, and a high-elasticity rubber material which tightly seals the inner peripheral portion of the perforation hole while being enlarged by the head, A second sealing member made of a high-elasticity rubber material that water-tightens the inside diameter of the perforation hole by compression bonding; and a third sealing member made of a high-elasticity rubber material for sealing the outer peripheral portion of the perforation hole by compression, Wherein the watertight cap is formed of a member made of a metal material. 제1항에 있어서,
상기 제3 실링부재와 조임너트 사이에 상기 제3 실링부재의 외경보다 큰 외경을 지닌 가압부재가 더 결합된 것을 특징으로 하는 하수분기관 수밀캡.The method according to claim 1,
And a pressing member having an outer diameter larger than an outer diameter of the third sealing member is further coupled between the third sealing member and the tightening nut.
KR1020160057908A 2016-05-12 2016-05-12 Sealing cap of sewerage pipe KR101830851B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102029679B1 (en) * 2018-04-25 2019-10-08 오현식 Connector of sewer line drainage
KR102556629B1 (en) * 2022-07-25 2023-07-19 (주)한국알앤드디 Sealing device for broken hose

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000213890A (en) * 1999-01-20 2000-08-02 Seo Koatsu Kogyo Kk Sealing plug for pipe end of heat exchanger
JP4051578B1 (en) * 2006-10-16 2008-02-27 中矢工業株式会社 Opening closing method, closing aid and opening closing tool set

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102029679B1 (en) * 2018-04-25 2019-10-08 오현식 Connector of sewer line drainage
KR102556629B1 (en) * 2022-07-25 2023-07-19 (주)한국알앤드디 Sealing device for broken hose

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