KR100515985B1 - A manhole cover having prevention structure of flowing backward of stink - Google Patents

A manhole cover having prevention structure of flowing backward of stink Download PDF

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Publication number
KR100515985B1
KR100515985B1 KR1020040067865A KR20040067865A KR100515985B1 KR 100515985 B1 KR100515985 B1 KR 100515985B1 KR 1020040067865 A KR1020040067865 A KR 1020040067865A KR 20040067865 A KR20040067865 A KR 20040067865A KR 100515985 B1 KR100515985 B1 KR 100515985B1
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South Korea
Prior art keywords
manhole cover
backflow prevention
outlet hole
water pipe
hole
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KR1020040067865A
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Korean (ko)
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황의철
이상각
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황의철
이상각
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Priority to KR1020040067865A priority Critical patent/KR100515985B1/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14—Covers for manholes or the like; Frames for covers
    • E02D29/1436—Covers for manholes or the like; Frames for covers with overflow or explosion control means, e.g. check or relief valves
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/02—Manhole shafts or other inspection chambers; Snow-filling openings; accessories
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/0401—Gullies for use in roads or pavements
    • E03F5/0405—Gullies for use in roads or pavements with an odour seal
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F2005/0416—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps with an odour seal
    • E03F2005/0417—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps with an odour seal in the form of a valve

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Sewage (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Abstract

본 발명은 관통된 다수개의 유수장공을 갖고 도로상에서 외부로 노출되며 뚜껑틀에 의해 지지되는 맨홀뚜껑에 있어서, 유수장공의 저면에서 밀폐되게 감싸면서 하측으로 돌출되고 중심측에서 외측으로 갈수록 하부로 경사지게 형성된 경사면을 가지며 하부선단에 유출공이 형성된 유수관과, 상단은 유수관의 유출공 상부의 뚜껑몸체에 회동축에 의해 회동가능하게 축결합되는 축봉을 갖고 유수관의 유출공을 자중에 의해 밀폐시키는 역류방지판을 구비하는 악취역류방지구조를 갖는 맨홀뚜껑에 관한 것이다. The present invention is a manhole cover which is exposed to the outside on the road and is supported by a lid frame having a plurality of perforated long holes, protruded downward while being hermetically wrapped at the bottom of the runners and inclined downward from the center side to the outside The flowing water pipe having an inclined surface and having an outlet hole formed at the lower end thereof, and an upper end having a shaft rod which is rotatably coupled by a rotation shaft to a lid body at the upper portion of the discharge hole of the flowing water pipe, seals the outflow hole of the running water pipe by its own weight. The present invention relates to a manhole cover having a malodor backflow prevention structure having a backflow prevention plate.

Description

악취역류방지구조를 갖는 맨홀뚜껑{A manhole cover having prevention structure of flowing backward of stink} A manhole cover having prevention structure of flowing backward of stink}

본 발명은 악취역류방지구조를 갖는 맨홀뚜껑에 관한 것으로서, 보다 상세하게는 도로상의 오수나 우수는 맨홀뚜껑을 통해 원활하게 내부로 유입되고 맨홀뚜껑 내부에서 발생된 심한 악취는 맨홀뚜껑 외부로 전혀 유출되지 않도록 차단할 수 있는 악취역류방지구조를 갖는 맨홀뚜껑에 관한 것이다.The present invention relates to a manhole cover having a malodor backflow prevention structure, more specifically, sewage or rainwater on the road smoothly flows into the interior through the manhole cover, and severe odor generated inside the manhole cover is completely leaked out of the manhole cover. It relates to a manhole cover having a malodor backflow prevention structure that can be blocked to prevent.

맨홀(manhole)은 노면(路面)에 지하로 사람이 출입할 수 있게 만든 구멍으로, 설치하는 장소는 관의 굵기, 방향이 바뀌는 곳, 기점이나 교차점, 길이가 긴 직선부의 중간에 설치되며, 통풍이나 관거(管渠)의 연락에도 이용된다. 모양은 시공하기가 수월한 원형이 가장 많고, 이 밖에 사각형, 타원형 등도 있다. 입구는 주위를 철로 만든 틀이나 돌로 테두리를 두르고, 보통 지름이 60cm 정도인 주철 또는 철근 콘크리트제(製)인 원형 뚜껑을 덮는다. 본체는 콘크리트 또는 벽돌로 만들며, 통로 구멍의 안지름은 1∼1.2m인 것이 많다. 바닥은 관로의 바닥과 같게 하거나, 다소 내려서 침전물을 수용할 수 있게 만든다. 깊이는 관로의 깊이에 따라 다르지만, 깊은 것은 100m가 넘는 것도 있다. The manhole is a hole made for people to enter and exit the road. The place to install is located in the middle of the pipe, the direction of change, the starting point or intersection, and the long straight part. It is also used for communication with conduits. The shape is the most easy to install round, and there are also square and oval. The entrance is framed with a steel frame or stone around it and covered with a round lid of cast iron or reinforced concrete, usually about 60 cm in diameter. The body is made of concrete or brick, and the inner diameter of the passage hole is often 1 to 1.2m. The bottom is equivalent to the bottom of the pipeline, or slightly lowered to accommodate the sediment. The depth depends on the depth of the pipeline, but the depth is over 100m.

이런 맨홀의 뚜껑은 다수개의 구멍이 형성되어 우수나 오수가 내부로 유입되어 하수관으로 유출되는 것이나, 특히 더운 여름철에는 맨홀 내부에서 고인 오수에서 오염물이 부패되어 발생된 악취나 가스가 다수개의 구멍을 통해 맨홀 외측으로 유출되어 근처에서 거리를 지나는 시민들은 심한 악취에 시달리게 되는 문제점이 있었다.The lid of this manhole is formed with a plurality of holes, and rainwater or sewage flows into the sewage pipe, and in particular, during the hot summer season, odors or gases generated by decay of contaminants from the sewage from inside the manhole are passed through a plurality of holes. Citizens who spilled out of the manhole and walked the streets nearby suffered from a bad smell.

이에 본 발명은 상기와 같은 종래의 문제점을 해결하기 위한 것으로서, 도로상의 오수나 우수는 맨홀뚜껑을 통해 원활하게 내부로 유입되고 맨홀뚜껑 내부에서 발생된 심한 악취는 맨홀뚜껑 외부로 전혀 유출되지 않도록 차단할 수 있는 악취역류방지구조를 갖는 맨홀뚜껑을 제공함에 그 목적이 있다. Therefore, the present invention is to solve the conventional problems as described above, the sewage or rain on the road smoothly flows into the interior through the manhole cover, and severe odor generated inside the manhole cover to prevent the leak out at all outside the manhole cover. It is an object of the present invention to provide a manhole cover having a malodorous backflow prevention structure.

이와 같은 목적을 달성하기 위하여 본 발명은 관통된 다수개의 유수장공을 갖고 도로상에서 외부로 노출되며 뚜껑틀에 의해 지지되는 맨홀뚜껑에 있어서, 유수장공의 저면에서 밀폐되게 감싸면서 하측으로 돌출되고 중심측에서 외측으로 갈수록 하부로 경사지게 형성된 경사면을 가지며 하부선단에 유출공이 형성된 유수관과, 상단은 유수관의 유출공 상부의 뚜껑몸체에 회동축에 의해 회동가능하게 축결합되는 축봉을 갖고 유수관의 유출공을 자중에 의해 밀폐시키는 역류방지판을 구비하는 특징이 있다.In order to achieve the above object, the present invention is a manhole cover which is exposed to the outside on the road and is supported by a lid frame having a plurality of perforated long holes, protruded downward while being hermetically wrapped at the bottom of the long hole. The outflow pipe has an inclined surface formed to be inclined downward toward the outside and has an outflow hole formed at the lower end thereof, and an upper end has a shaft that is pivotally coupled to the lid body of the outflow hole of the outflow pipe by a rotation shaft. It is characterized by including a non-return plate to seal the ball by its own weight.

이하 본 발명을 첨부된 도면에 의해 보다 상세하게 설명하면 다음과 같다.Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

도 1은 본 발명 실시예의 요부를 절취한 분리 사시도이고, 도 2는 본 고안 실시예의 측단면도이며, 도 3은 본 고안 실시예인 역류방지판의 모습을 보인 사시도이고, 도 4는 본 고안 실시예인 역류방지판의 다른 실시예의 모습을 보인 측단면도이다.Figure 1 is an exploded perspective view of the main portion of the present invention cutaway, Figure 2 is a side cross-sectional view of the embodiment of the present invention, Figure 3 is a perspective view showing a state of the backflow prevention plate of the present invention embodiment, Figure 4 is an embodiment of the present invention Side sectional view showing another embodiment of the non-return plate.

본 발명의 악취역류방지구조를 갖는 맨홀뚜껑(10)은, 관통된 다수개의 유수장공(11)을 갖고 도로상에서 외부로 노출되며 뚜껑틀(30)에 의해 지지되는 금속재질의 원형판체로, Manhole cover 10 having a malodor backflow prevention structure of the present invention is a circular plate body of a metallic material having a plurality of flowing holes 11 and exposed to the outside on the road and supported by the lid frame 30,

유수장공(11)의 저면에서 밀폐되게 감싸면서 하측으로 돌출되어 중심측에서 외측으로 갈수록 하부로 경사지게 형성된 경사면(13)을 갖으며 하부선단에 유출공(14)이 형성된 유수관(12)과; An oil and water pipe 12 having an inclined surface 13 formed to be inclined downwardly from the center side to the outside while being hermetically wrapped at the bottom of the oil and water hole 11 and having an outlet hole 14 formed at the lower end thereof;

상단은 유수관(12)의 유출공(14) 상부의 뚜껑몸체에 회동축(22)에 의해 회동가능하게 축결합되는 축봉(21)을 갖고 유수관(12)의 유출공(14)을 자중에 의해 밀폐시키는 역류방지판(20)으로 구성된다.The upper end has a shaft rod 21 which is pivotally coupled to the lid body of the upper portion of the outlet hole 14 of the flow pipe 12 by the rotation shaft 22 and has a weight of the outlet hole 14 of the water pipe 12. It consists of the backflow prevention plate 20 which seals by.

상기 역류방지판(20)은 유수관(12)의 유출공(14) 선단과 맞닿는 정면에 고무재질의 밀폐판(23)을 더 구비시킬 수도 있다.The non-return plate 20 may be further provided with a rubber sealing plate 23 on the front surface in contact with the tip of the outflow hole 14 of the water flow pipe (12).

상기 역류방지판(20)의 회동축(22)은 유수관(12)의 유출공(14) 선단보다 뚜껑몸체 중심측으로 위치되어 형성되고 유출공(14) 선단과 면접되는 정면의 배면에는 밀폐덧살(24)을 구비시켜 역류방지판(20)을 자중에 의해 유출공(14) 선단으로 밀착되도록 구성시킬 수도 있다.The pivot shaft 22 of the backflow prevention plate 20 is formed to be located toward the center of the lid body rather than the tip of the outlet hole 14 of the water flow pipe 12, and is sealed in the rear surface of the front face in which the outlet hole 14 is interviewed. 24 may be provided so that the backflow prevention plate 20 may be in close contact with the tip of the outlet hole 14 by its own weight.

이러한 구성을 갖는 본 발명의 사용상태를 상세히 설명하면 다음과 같다.Referring to the state of use of the present invention having such a configuration in detail as follows.

먼저, 유수장공(11)의 저면에 형성되어 유수장공(11)을 밀폐되게 감싸면서 맨홀뚜껑(10)의 중심에서 외측으로 갈수록 하측으로 경사면(13)이 형성되고 그 선단에 유출공(14)을 갖는 유수관(12)이 형성된 맨홀뚜껑(10) 저면의 유출공(14) 상부에 회동축(22)으로 역류방지판(20)의 상부 축봉(21)을 축결합시키면 된다.First, the inclined surface 13 is formed downward from the center of the manhole cover 10 toward the outside while being formed at the bottom of the flowing hole 11 and sealingly wrapping the flowing hole 11. The upper shaft bar 21 of the backflow prevention plate 20 may be axially coupled to the pivot shaft 22 on the top of the outlet hole 14 on the bottom surface of the manhole cover 10 having the water pipe 12 having the water flow pipe 12.

역류방지판(20)의 축봉(21)은 회동축(22)에 의해서 유출공(14)의 직상부보다는 중심측방향으로 회동가능하게 축결합시키는 것이 자중에 의해 유수관(12)의 유출공(14)을 밀폐시킬 수 있도록 구성시키는 것이 바람직하다. The shaft bar 21 of the non-return plate 20 is pivotally coupled to the center side direction rather than the upper portion of the outlet hole 14 by the rotating shaft 22, so that the outflow hole of the flow pipe 12 is caused by its own weight. It is preferable to comprise so that (14) can be sealed.

이때, 역류방지판(20)의 유출공(14)과 면접되는 정면에는 탄성을 갖는 고무재질의 밀폐판(23)을 구비시킴으로써 역류방지판(20)의 유출공(14)에 대한 밀폐력을 보다 강화시킬 수도 있고, 유출공(14)의 선단을 고무재질의 밀폐부재(도시않음)로 감싸서 밀폐력이 강화되도록 형성시킬 수도 있음은 물론이다.At this time, the sealing plate 23 of the backflow prevention plate 20 has a sealing force with respect to the outflow hole 14 of the backflow prevention plate 20 by providing a sealing plate 23 made of a rubber material on the front face that is in contact with the outlet hole 14 of the backflow prevention plate 20. It is also possible to reinforce, it may be formed to surround the tip of the outlet 14 with a rubber sealing member (not shown) to form a tight sealing force.

또한, 유수관(12)의 유출공(14) 반대편에 위치되는 역류방지판(20)의 배면에는 역류방지판(20)의 자중을 보다 크게 하여 역류방지판(20)의 정면이 유수관(12)의 유출공(14) 선단에 더욱 밀착되도록 하여 유출공(14)의 밀폐력을 보다 향상시킬 수 있는 밀폐덧살(24)을 형성시킴이 바람직하다.In addition, on the rear surface of the backflow prevention plate 20 located opposite the outlet hole 14 of the water flow pipe 12, the weight of the backflow prevention plate 20 is increased so that the front of the backflow prevention plate 20 is formed with the backflow prevention pipe ( It is preferable to form a closed grate 24 that can be further in close contact with the tip of the outlet 14 of the 12 to improve the sealing force of the outlet 14 more.

이렇게 구성된 본 발명의 맨홀뚜껑(10)을 뚜껑틀(30)에 안착시키면, 도로상의 우수나 오수는 흘러서 맨홀뚜껑(10)의 유수장공(11)으로 유입되고, 유입된 우수나 오수는 유수장공(11) 하부의 유수관(12) 경사면(13)을 타고 하부로 흘러서 유출공(14)을 통해 맨홀뚜껑(10) 내부로 유입되어 하수관(도시않음)으로 방출된다.When the manhole cover 10 of the present invention configured as described above is seated on the lid frame 30, rainwater or sewage on the road flows into the drainage hole 11 of the manhole cover 10, and the rainwater or sewage introduced flows into the drainage hole. (11) flows into the lower portion of the lower flow pipe 12 inclined surface 13 and flows into the manhole cover 10 through the outlet hole 14 and is discharged into the sewer pipe (not shown).

이때, 유수관(12)의 경사면(13)을 타고 유입되는 우수나 오수는 흐르는 압력으로 역류방지판(20)을 밀어서 회동축(22)을 중심으로 축봉(21)을 회동시켜 역류방지판(20)의 저면을 유출공(14)에서 이격시켜 유출공(14)을 개방시키게 된다.At this time, rainwater or sewage flowing in the inclined surface 13 of the water pipe 12 pushes the backflow prevention plate 20 with a flowing pressure to rotate the shaft rod 21 around the rotation shaft 22 to prevent the backflow prevention plate ( The bottom surface of 20 is spaced apart from the outlet 14 to open the outlet 14.

이렇게 유수장공(11)을 통해 유입되어 유수관(12)을 거쳐 맨홀뚜껑(10) 내부로 유입된 대부분의 오수나 우수는 하수관을 통해 하수종말처리장이나 하천으로 유입되지만, 일부는 맨홀뚜껑(10) 내부에 고여서 남게 되고 이렇게 남은 오수나 우수는 음식물 찌꺼기와 함께 부패 및 산패되어 악취를 발생시키게 되는 바, 이러한 악취는 맨홀뚜껑(10)의 유수장공(11)을 통해 외부로 방출되려고 하나, 유수장공(11)을 감싸는 유수관(12)과 유수관(12)의 유출공(14)을 자중으로 밀폐시키는 역류방지판(20)에 의해서 맨홀뚜껑(10) 내부의 악취는 맨홀뚜껑(10) 외부로는 유출되지 않게 된다.Thus, most of the sewage or rainwater flowing into the manhole cover 10 through the water pipe 11 and flowing into the manhole cover 10 is introduced into the sewage treatment plant or river through the sewage pipe, but some of the manhole cover 10 ) The remaining sewage or rainwater is left in the interior and decayed and rancidized with food waste, causing odors. These odors are to be released to the outside through the flowing hole 11 of the manhole cover 10, Odor inside the manhole cover 10 by the backflow prevention plate 20 which seals the oil and water pipe 12 and the outflow hole 14 of the oil and water pipe 12, which wraps the oil and water hole 11, in its own weight, is the manhole cover 10. ) It will not leak outside.

이렇게 본 발명의 맨홀뚜껑(10)은 다수개의 유수장공(11)과 관통되는 유수관(12)의 유출공(14)이 역류방지판(20)의 자중에 의해 항상 밀폐된 상태로 막혀 있다가 유수장공(11)을 통해 외부에서 우수나 오수가 유입될 때에만 역류방지판(20)이 회동되어 유수관(12)의 유출공(14)이 개방시키기 때문에 맨홀뚜껑(10) 내부의 악취는 맨홀뚜껑(10) 외부로 전혀 유출되지 않게 되어 도로상에서는 쾌적한 외부환경을 유지할 수 있게 된다. Thus, the manhole cover 10 of the present invention is clogged in a closed state by the self-weight of the backflow prevention plate 20 of the outlet hole 14 of the plurality of flowing holes 11 and the flowing pipe 12 is Odor inside the manhole cover 10 because the backflow prevention plate 20 is rotated to open the outflow hole 14 of the oil and water pipes 12 only when rainwater or sewage is introduced from the outside through the oil and water holes 11. Manhole cover 10 is not leaked to the outside at all is able to maintain a comfortable external environment on the road.

이와 같이 본 발명은 도로상의 오수나 우수는 맨홀뚜껑을 통해 원활하게 내부로 유입되고 맨홀뚜껑 내부에서 발생된 심한 악취는 맨홀뚜껑 외부로 전혀 유출되지 않도록 차단할 수 있는 효과가 있다.As described above, the present invention has the effect that the sewage or rainwater on the road is smoothly introduced into the interior through the manhole cover, and severe odors generated inside the manhole cover are prevented from leaking out of the manhole cover at all.

도 1은 본 발명 실시예의 요부를 절취한 분리 사시도, 1 is an exploded perspective view of the main portion of the present invention cut out;

도 2는 본 고안 실시예의 측단면도, 2 is a side cross-sectional view of an embodiment of the present invention,

도 3은 본 고안 실시예인 역류방지판의 모습을 보인 사시도, Figure 3 is a perspective view showing a state of the non-return plate in accordance with an embodiment of the present invention,

도 4는 본 고안 실시예인 역류방지판의 다른 실시예의 모습을 보인 측단면도. Figure 4 is a side cross-sectional view showing another embodiment of the non-return plate is an embodiment of the present invention.

*도면의 주요 부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings

10 : 맨홀뚜껑 11 : 유수장공10: manhole cover 11: flowing water worker

12 : 유수관 13 : 경사면12: flowing pipe 13: slope

14 : 유출공 20 : 역류방지판14: outflow hole 20: backflow prevention plate

21 : 축봉 22 : 회동축21: shaft 22: rotating shaft

23 : 밀폐판 24 : 밀폐덧살23: sealing plate 24: sealing

30 : 뚜껑틀30: lid frame

Claims (3)

관통된 다수개의 유수장공(11)을 갖고 도로상에서 외부로 노출되며 뚜껑틀(30)에 의해 지지되는 맨홀뚜껑에 있어서;In the manhole cover having a plurality of flow holes 11 exposed to the outside on the road and supported by the lid frame 30; 유수장공(11)의 저면에서 밀폐되게 감싸면서 하측으로 돌출되고 중심측에서 외측으로 갈수록 하부로 경사지게 형성된 경사면(13)을 갖으며 하부선단에 유출공(14)이 형성된 유수관(12)과;An oil and water pipe 12 having an inclined surface 13 formed to be inclined downwardly from the center side to the outside while being hermetically wrapped at the bottom of the oil and water hole 11 and having an outlet hole 14 formed at the lower end thereof; 상단은 유수관(12)의 유출공(14) 상부의 뚜껑몸체에 회동축(22)에 의해 회동가능하게 축결합되는 축봉(21)을 갖고 유수관(12)의 유출공(14)을 자중에 의해 밀폐시키는 역류방지판(20)을 구비함을 특징으로 하는 악취역류방지구조를 갖는 맨홀뚜껑.The upper end has a shaft rod 21 which is pivotally coupled to the lid body of the upper portion of the outlet hole 14 of the flow pipe 12 by the rotation shaft 22 and has a weight of the outlet hole 14 of the water pipe 12. Manhole cover having a malodor backflow prevention structure, characterized in that it comprises a backflow prevention plate 20 to be sealed by. 제 1 항에 있어서;The method of claim 1; 상기 역류방지판(20)은 유수관(12)의 유출공(14) 선단과 맞닿는 정면에 고무재질의 밀폐판(23)을 더 구비함을 특징으로 하는 악취역류방지구조를 갖는 맨홀뚜껑.The backflow prevention plate 20 is a manhole cover having a malodorous backflow prevention structure, characterized in that it further comprises a rubber sealing plate 23 on the front surface in contact with the tip of the outlet 14 of the water pipe (12). 제 1 항에 있어서;The method of claim 1; 상기 역류방지판(20)의 회동축(22)은 유수관(12)의 유출공(14) 선단보다 뚜껑몸체 중심측으로 위치되어 형성되고 유출공(14) 선단과 면접되는 정면의 배면에는 밀폐덧살(24)이 더 구비되어 역류방지판(20)을 자중에 의해 유출공(14) 선단으로 밀착시키는 것을 특징으로 하는 악취역류방지구조를 갖는 맨홀뚜껑.The pivot shaft 22 of the backflow prevention plate 20 is formed to be located toward the center of the lid body rather than the tip of the outlet hole 14 of the water flow pipe 12, and is sealed in the rear surface of the front face in which the outlet hole 14 is interviewed. The manhole cover having a bad smell backflow prevention structure, characterized in that it is further provided to contact the backflow prevention plate 20 to the tip of the outlet hole 14 by its own weight.
KR1020040067865A 2004-08-27 2004-08-27 A manhole cover having prevention structure of flowing backward of stink KR100515985B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008062960A1 (en) * 2006-11-21 2008-05-29 Choi Youn Ho An assembly manhole having s-shaped hinge structure
KR100835530B1 (en) * 2006-11-21 2008-06-04 최윤호 An assembly manhole having S-shaped hinge structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008062960A1 (en) * 2006-11-21 2008-05-29 Choi Youn Ho An assembly manhole having s-shaped hinge structure
KR100835530B1 (en) * 2006-11-21 2008-06-04 최윤호 An assembly manhole having S-shaped hinge structure

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