KR100676369B1 - Back flow prevention device of a manhole for building complexes - Google Patents

Back flow prevention device of a manhole for building complexes Download PDF

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Publication number
KR100676369B1
KR100676369B1 KR1020060072948A KR20060072948A KR100676369B1 KR 100676369 B1 KR100676369 B1 KR 100676369B1 KR 1020060072948 A KR1020060072948 A KR 1020060072948A KR 20060072948 A KR20060072948 A KR 20060072948A KR 100676369 B1 KR100676369 B1 KR 100676369B1
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South Korea
Prior art keywords
manhole
backflow prevention
hinge
pin
prevention door
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KR1020060072948A
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Korean (ko)
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안정환
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주식회사 삼풍엔지니어링건축사 사무소
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Priority to KR1020060072948A priority Critical patent/KR100676369B1/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
    • 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
    • E02D29/149—Annular gaskets
    • 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
    • E03F5/042—Arrangements of means against overflow of water, backing-up from the drain

Abstract

A backflow prevention device of a manhole for building complex is provided to prohibit rain water from flooding the manhole by allowing a backflow prevention door to rise according as water lever of the manhole rises. In a manhole including a manhole cover(200) provided with plural water draining holes(210) installed on a water intake hole(111) of an upper surface, and a draining pipe passage(300) mounted at both side walls(120), a backflow prevention device of a manhole for building complexes comprises a hinge bracket(400) formed with a supporting unit having a pin hole and a fixing hole at one side on the inside surface of the upper surface of the manhole at both sides; and a buoyancy plate(520) installed at the lower surface. The fixing hole is eccentrically formed toward the backflow prevention door not vertically right under the pin hole. The backflow prevention door provided with a hinge unit is combined to the hinge bracket with a hinge pin to rotate. A fixing pin(600) is inserted in the fixing hole of the hinge bracket to support the hinge unit. When buoyancy does not operate, the backflow prevention door is opened by inclining at acute angle.

Description

건축단지용 맨홀의 역류방지시설{Back flow prevention device of a manhole for building Complexes}Back flow prevention device of a manhole for building complexes

도 1 은 본 발명에 따라 맨홀에 설치된 역류방지문이 열려진 상태를 예시한 측면도1 is a side view illustrating a state in which a backflow prevention door is installed in a manhole according to the present invention;

도 2 는 본 발명에 따라 맨홀에 설치된 역류방지문이 닫힌 상태를 예시한 측면도Figure 2 is a side view illustrating a state in which the backflow prevention door is installed in the manhole according to the invention closed

도 3 은 본 발명에 따른 역류방지문과 설치수단을 예시한 요부 사시도Figure 3 is a perspective view of the main portion illustrating the non-return prevention door and the installation means according to the present invention

도면의 주요부분에 대한 부호의 설명Explanation of symbols for main parts of the drawings

110 : 상부면 111 : 빗물유입구110: upper surface 111: rainwater inlet

120 : 측벽 200 : 맨홀뚜껑 120 side wall 200 manhole cover

210 : 빗물배수홀 300 : 배수관로210: rainwater drainage hole 300: drainage pipe

400 : 힌지브라켓 410 : 지지부400: hinge bracket 410: support

411 : 핀공 412 : 고정공411: pin ball 412: fixed ball

420 : 힌지핀 500 : 역류방지문420: hinge pin 500: backflow prevention door

510 : 힌지부 511 : 힌지공510: hinge portion 511: hinge ball

520 : 부력판 521 : 보조부력판520: buoyancy plate 521: auxiliary buoyancy plate

600 : 고정핀600: fixed pin

본 발명은 건축단지용 맨홀의 역류방지시설에 관한 것으로서 더욱 상세히는 집중호우시 빗물이 역류되어 맨홀을 통해 지상으로 넘치는 것을 차단하여 이로인한 침수피해를 효과적으로 방지할 수 있도록 한 건축단지용 맨홀의 역류방지시설에 관한 것이다.The present invention relates to a backflow prevention facility of a manhole for building complexes, and more particularly, to backflow of manholes for building complexes to effectively prevent flooding damage caused by rainwater flowing back through the manhole to prevent overflow from the ground. It is about prevention facilities.

일반적으로 상가 또는 아파트 등의 건축단지나 또는 도로에는 이들로 부터 배출되는 생활하수나 빗물을 하수 종말 처리장이나 일정장소로 보내기 위해서 지하에 배수관로가 매설되고, 상기 배수관로는 다시 맨홀과 연결되고, 상기 맨홀의 상부에는 다수개의 관통구멍이 형성된 맨홀뚜껑을 착탈식으로 설치하여 외부로 부터의 물질유입을 방지하거나 맨홀 내부의 청소가 용이하도록 한 구조를 갖고 있다.In general, in a building complex or a road such as a shopping mall or apartment, a drainage pipe is buried underground to send living sewage or rainwater discharged from them to a sewage treatment plant or a fixed place, and the drainage pipe is connected to a manhole again. The upper part of the manhole has a structure in which a plurality of through-hole manhole cover is detachably installed to prevent inflow of material from the outside or to easily clean the inside of the manhole.

그런데 여름 장마철 집중호우가 내려 하수처리장이나 하천에 저장하지 못할 정도의 빗물이 모이게 되면 그 빗물이 하수관로를 통해 맨홀로 역류되는데 종래의 맨홀에는 역류되는 빗물을 차단할 수 있는 시설이 없어 그 빗물이 그대로 지상으로 넘침에 따라 건축단지나 도로가 침수되는 피해를 입어 경제적으로나 정신적으로 상당한 손실이 있는 것이다.However, when the heavy rain falls during the summer rainy season and the rainwater that cannot be stored in the sewage treatment plant or the rivers gathers, the rainwater flows back to the manhole through the sewer pipe. However, the conventional manhole has no facility to block the rainwater that flows back to the ground. As a result, flooding of buildings and roads is inundated, resulting in significant economic and mental losses.

따라서 본 발명은 상기의 문제점을 해소하기 위한 것으로서 본 발명의 목적은 집중호우로 인하여 빗물이 역류되어 맨홀로 유입되더라도 그 빗물이 지상으로는 넘치지 않도록 하므로서 이로인한 침수피해를 효과적으로 방지할 수 있는 건축단지용 맨홀의 역류방지시설을 제공하기 위한 것이다.Therefore, the present invention is to solve the above problems, an object of the present invention is to prevent the flooding caused by the heavy rains, even if the rainwater flows back into the manhole so that the rainwater does not overflow to the ground due to the construction complex can effectively prevent To provide a backflow prevention facility for the manhole.

이러한 본 발명은 맨홀의 빗물유입구가 있는 상부면의 내면 일측에 핀공과 고정공이 있는 지지부가 형성된 힌지브라켓을 설치하되 고정공은 핀공의 바로 아래인 수직방향이 아니고, 역류방지문쪽으로 편심되게 형성하고, 저면에 부력판이 설치되고, 힌지부가 형성된 역류방지문을 상기 힌지브라켓에 힌지핀으로 결합하여 역류방지문이 회전될 수 있도록 하고, 상기 힌지브라켓의 고정공에 고정핀을 끼워 힌지부를 받쳐주어 부력이 작용하지 않을 때에는 역류방지문이 예각으로 기울어진 상태로 개전되게 하므로서 달성되는 것이다.The present invention is installed on the inner surface of the upper surface of the rainwater inlet of the manhole to install a hinge bracket formed with a support with a pin hole and a fixing hole, but the fixing hole is not oriented vertically just below the pin hole, it is formed eccentrically toward the backflow prevention door A buoyancy plate is installed on the bottom surface, the backflow prevention door having a hinge portion is coupled to the hinge bracket with a hinge pin so that the backflow prevention door can be rotated, and a fixing pin is inserted into the fixing hole of the hinge bracket to support the buoyancy. When this does not work, it is achieved by allowing the backflow door to open at an acute angle.

이와같은 본 발명은 빗물이 역류되어 맨홀로 유입되면서 수위가 점차 오르면 역류방지문이 저면에 설치된 부력판에 의해 점차 상승되어 맨홀의 빗물유입구를 차단함에 따라 빗물이 역류된다 하더라도 맨홀 밖 지상으로는 넘치지 않으므로서 상기의 목적을 효과적으로 달성할 수 있는 것이다.In the present invention as the rainwater flows back into the manhole as the water level gradually rises, the backflow prevention door is gradually raised by the buoyancy plate installed on the bottom, even if the rainwater flows back to block the rainwater inlet of the manhole, overflowing to the ground outside the manhole It is possible to achieve the above object effectively.

이하 본 발명의 목적을 효과적으로 달성할 수 있는 바람직한 실시예를 첨부된 도면에 의하여 상세히 설명하면 다음과 같다.Hereinafter, described in detail with reference to the accompanying drawings a preferred embodiment that can effectively achieve the object of the present invention.

도 1 은 본 발명에 따라 맨홀에 설치된 역류방지문이 열려진 상태를 예시한 측면도이고, 도 2 는 본 발명에 따라 맨홀에 설치된 역류방지문이 닫힌 상태를 예시한 측면도이며, 도 3 은 본 발명에 따른 역류방지문과 설치수단을 예시한 요부 사시도이다.1 is a side view illustrating a state in which the non-return door is installed in the manhole according to the present invention, Figure 2 is a side view illustrating a state in which the non-return door is installed in the manhole according to the present invention, Figure 3 is A main part perspective view illustrating the non-return door and the installation means thereof.

이러한 본 발명은 상부면(110)의 빗물유입구(111) 위로 빗물배수홀(210)이 다수 형성된 맨홀뚜껑(200)이 설치되고, 내부의 양쪽 측벽(120)에 배수관로(300)가 구비된 맨홀을 구성함에 있어서, 상기 빗물유입구(111)가 있는 맨홀의 상부면(110) 내면 일측에 핀공(411)과 고정공(412)이 있는 지지부(410)가 양쪽으로 형성된 힌지브라켓(400)을 설치하되 고정공(412)은 핀공(411)의 바로 아래인 수직방향이 아니고 역류방지문(500)쪽으로 편심되게 형성한다.In the present invention, a manhole cover 200 having a plurality of rainwater drainage holes 210 formed on the rainwater inlet 111 of the upper surface 110 is installed, and the drainage pipe 300 is provided on both side walls 120 therein. In configuring the manhole, the hinge bracket 400 is formed on both sides of the support hole 410 having the pin hole 411 and the fixing hole 412 on one side of the inner surface of the upper surface 110 of the manhole having the rainwater inlet 111. The fixing hole 412 is installed to be eccentrically toward the backflow prevention door 500 rather than in the vertical direction of the pin hole 411.

그리고 저면에 부력판(520)이 설치되고, 힌지부(510)가 형성된 역류방지문(500)을 상기 힌지브라켓(400)에 힌지핀(420)으로 결합하여 역류방지문(500)이 회전될 수 있도록 한다.And the buoyancy plate 520 is installed on the bottom, the back flow prevention door 500 in which the hinge portion 510 is formed by coupling the hinge pin 420 to the hinge bracket 400 to the reverse flow prevention door 500 is rotated To help.

또한 상기 힌지브라켓(400)의 고정공(412)에는 고정핀(600)을 끼워 그 고정핀(600)으로 힌지부(510)를 받쳐서 부력이 작용하지 않을 때 역류방지문(500)이 예각으로 기울어진 상태로 개전되게 한 것으로서 도면중 미설명 부호 (511)은 힌지부에 형성된 힌지공이다.In addition, the fixing pin 600 is inserted into the fixing hole 412 of the hinge bracket 400 to support the hinge 510 with the fixing pin 600 so that the backflow prevention door 500 is acute when buoyancy is not applied. In the figure, reference numeral 511 in the drawing indicates a hinge hole formed in the hinge portion.

이와같은 본 발명은 상가 및 공장, 아파트 등의 건축단지나 도로에 맨홀을 설치하여 생활하수나 빗물을 집수토록 한후 이를 배수관로(300)를 통해 하수종말처리장과 같은 저장장소로 보내도록 하는 것은 종래와 마찬가지이다.The present invention is to install the manhole in the building complex or road, such as shopping malls, factories, apartments to collect the living sewage or rain water and then send it to a storage place such as a sewage terminal treatment plant through the drainage pipe (300) Same as

그러나 본 고안에서의 특징은 집중호우로 인하여 많은 양의 비가 내려 하수 종말처리장과 같은 저장장소의 수위가 상당히 높아져 빗물이 배수관로(300)를 통하여 맨홀로 역류될 경우 그 빗물이 맨홀밖 지상으로는 넘치지 않도록 하므로서 이로인한 침수피해를 효과적으로 방지할 수 있도록 한 것이다.However, the feature of the present invention is that due to the heavy rain, the amount of rain drops down to a high level in storage areas such as sewage treatment plants, and when rainwater flows back into the manhole through the drainage pipe 300, the rainwater is discharged to the ground outside the manhole. It is to prevent the flooding caused by the overflow so as to effectively prevent.

이러한 본 고안은 빗물유입구(111)가 형성된 맨홀의 상부면(110)내면에 핀공(411)과 고정공(412)이 있는 지지부(410)가 형성된 힌지브라켓(400)을 설치한후 상기 힌지브라켓(400)에 매달려 회전될 수 있는 역류방지문(500)을 설치하는데 상기 역류방지문(500)은 후미에 힌지공(511)이 있는 힌지부(510)가 돌출되어 있으므로 역류방지문(500)을 설치할 때에는 상기 힌지부(510)를 힌지브라켓(400)의 양 지지부(410)사이에 넣은후 힌지핀(420)을 상기 핀공(411)과 힌지공(511)사이에 관통되게 끼워 주면 상기 역류방지문(500)은 설치된 상태에서 상하로 회전될 수 있는 것이다.This invention devises the hinge bracket after installing the hinge bracket 400 formed with the support hole 410 having the pin hole 411 and the fixing hole 412 on the upper surface 110 of the manhole formed with the rainwater inlet 111 Install the backflow prevention door 500 that can be rotated by hanging on the 400, the backflow prevention door 500 is the backflow prevention door 500 because the hinge portion 510 with the hinge hole 511 protrudes from the rear When installing, the hinge part 510 is inserted between both support parts 410 of the hinge bracket 400, and then the hinge pin 420 is inserted through the pin hole 411 and the hinge hole 511 to prevent the backflow. The door 500 can be rotated up and down in the installed state.

여기서 상기 역류방지문(500)의 저면에는 부력판(520)이 설치되어 있다.Here, the buoyancy plate 520 is installed on the bottom of the backflow prevention door 500.

상기처럼 설치된 역류방지문(500)은 회전력을 제어하는 수단이 전혀없는 것이므로 이후에는 역류방지문(500)을 약간 들어 밑으로 고정핀(600)을 상기 힌지브라켓(400)의 고정공(412)에 끼워주면 상기 고정핀(412)이 역류방지문(500)에 형성된 힌지부(510)를 받쳐주는 것인데 상기 고정공(412)은 핀공(411)의 바로 아래인 수직방향이 아니고, 역류방지문(500)쪽으로 편심되게 형성된 것이므로 역류방지문(500)이 평상시에는 도 1에서와 같이 비스듬하게 열린 상태를 유지하고, 즉, 역류방지문(500)은 90도 이내의 예각 범위내에서만 개전될 수 있는 것이다.Since the backflow prevention door 500 is installed as described above, since there is no means for controlling the rotational force, thereafter, the backflow prevention door 500 slightly lifts the fixing pin 600 downward from the fixing hole 412 of the hinge bracket 400. The fixing pin 412 supports the hinge portion 510 formed in the backflow prevention door 500. The fixing pin 412 is not in the vertical direction directly below the pin hole 411. Since it is formed eccentrically toward the 500, the non-return door 500 is normally maintained at an angle as shown in FIG. 1, that is, the non-return door 500 may be opened only within an acute angle within 90 degrees. It is.

이처럼 역류방지문(500)이 맨홀에 설치된 상태에서 집중호우로 인한 홍수시 빗물이 역류되면서 맨홀로 유입되면 맨홀의 수위가 점차 올라가게 되는데 이때 역류방지문(500)은 저면에 설치된 부력판(520)에 의해 수위가 올라가는대로 함께 상승되어 도2에서와 같이 맨홀의 빗물유입구(111)를 차단하게 되어 빗물이 맨홀 밖 지상으로는 넘치지 못하는 것으로 이러한 역류방지문(500)은 맨홀에 빗물이 차있는 상태에서는 닫힌 상태를 계속 유지하는 것이며, 수위가 내려가야만 그 수위에 따라 역류방지문(500)이 점차 하강되는 것이다.As such, when the backflow prevention door 500 is installed in the manhole and the rainwater flows back during the flood due to the heavy rain, the water level of the manhole gradually rises. The backflow prevention door 500 is the buoyancy plate 520 installed on the bottom. As the water level rises together), the rainwater inlet 111 of the manhole is blocked as shown in FIG. 2 so that the rainwater does not overflow to the ground outside the manhole. Such a backflow prevention door 500 is filled with rainwater in the manhole. In the state is to keep the closed state, the water level is lowered according to the backflow prevention door 500 is lowered gradually.

여기서 상기 역류방지문(500)은 위에서 설명한 바와같이 평상시에는 힌지브라켓(400)의 지지부(410)와 수직상태로 열려져 설치되는 것이 아니고, 핀공(411)과 편심되게 설치된 고정공(412)에 끼워져 고정핀(600)으로 고정되는 힌지부(510)에 의해 90도 이내의 예각범위 내에서 도1에서와 같이 비스듬한 상태로 열려져 설치되므로서 맨홀로부터 차오르는 수위에 대해서 역류방지문(500)이 수직으로 입설된 상태로 열려져 설치된 것에 비해서 보다 신속하게 수위 및 수압에 대응하여 역류방지문(500)을 적절히 닫을수 있는 것인데, 상기 부력판(520)의 선단 저면에는 부력증강용 보조부력판(521)을 형성하였기 때문에 보다더 많은 부력이 작용되어 역류방지문(500)이 수위 상승에 더욱 민감하게 반응하여 그만큼 상승력도 좋아지는 것이다.Here, the non-return prevention door 500 is not normally installed as being vertically opened with the support part 410 of the hinge bracket 400 as described above, but is fitted in the fixing hole 412 installed eccentrically with the pin hole 411. By the hinge part 510 fixed by the fixing pin 600, the backflow prevention door 500 is perpendicular to the water level rising from the manhole while being installed in an oblique state as shown in FIG. 1 within an acute angle within 90 degrees. The backflow prevention door 500 can be properly closed in response to the water level and the water pressure more quickly than the installed state installed in the standing state, and the auxiliary bottom buoyancy plate 521 for buoyancy enhancement is provided at the bottom of the buoyancy plate 520. More buoyancy is applied because it is formed because the backflow prevention door 500 is more sensitive to the rise in the water level is to increase the lifting force by that much.

삭제delete

이상과 같이 본 발명의 바람직한 실시 예를 설명하였으나 본 발명은 다양한 변화와 변경 및 균등물을 사용할 수가 있으며, 상기 실시 예를 적절히 변형하여 동일하게 응용할 수 있음이 명확하다. 따라서 상기 기재 내용은 하기 특허청구범위의 한계에 의해 정해지는 본 발명의 범위를 한정하는 것은 아니다.As described above, the preferred embodiment of the present invention has been described, but the present invention may use various changes, modifications, and equivalents. Therefore, the above description does not limit the scope of the invention defined by the limitations of the following claims.

이상에서 상술한 바와같이 본 발명은 집중호우로 인해 빗물이 맨홀로 역류되어 맨홀 수위가 올라가면 역류방지문이 함께 상승되어 맨홀의 빗물유입구를 차단하므로 빗물이 맨홀밖 지상으로는 넘치지 못함에 따라 이로인한 침수피해를 효과적으 로 방지할 수 있는 것이다.As described above, according to the present invention, the rainwater flows back into the manhole due to the heavy rain, and as the level of the manhole rises, the backflow prevention door is raised to block the rainwater inlet of the manhole, thereby preventing the rainwater from overflowing to the ground outside the manhole. This can effectively prevent flood damage.

Claims (2)

상부면(110)의 빗물유입구(111) 위로 빗물배수홀(210)이 다수 형성된 맨홀뚜껑(200)이 설치되고, 내부의 양쪽 측벽(120)에 배수관로(300)가 구비된 맨홀을 구성함에 있어서, The manhole cover 200 having a plurality of rainwater drainage holes 210 formed on the rainwater inlet 111 of the upper surface 110 is installed, and constitutes a manhole provided with drainage pipes 300 on both side walls 120 therein. In 상기 빗물유입구(111)가 있는 맨홀의 상부면(110) 내면 일측에 핀공(411)과 고정공(412)이 있는 지지부(410)가 양쪽으로 형성된 힌지브라켓(400)을 설치하되 고정공(412)은 핀공(411)의 바로 아래인 수직방향이 아니고 역류방지문(500)쪽으로 편심되게 형성하고, The hinge bracket 400 is formed at both sides of the upper surface 110 of the manhole having the rainwater inlet 111 and the support part 410 having the pin hole 411 and the fixing hole 412 is fixed to the fixing hole 412. ) Is formed eccentrically toward the backflow prevention door 500, not in the vertical direction directly below the pin hole 411, 저면에 부력판(520)이 설치되고, 힌지부(510)가 형성된 역류방지문(500)을 상기 힌지브라켓(400)에 힌지핀(420)으로 결합하여 역류방지문(500)이 회전될 수 있도록 하고,The buoyancy plate 520 is installed on the bottom, and the backflow prevention door 500 with the hinge portion 510 is coupled to the hinge bracket 400 by the hinge pin 420, so that the backflow prevention door 500 can be rotated. So that 상기 힌지브라켓(400)의 고정공(412)에는 고정핀(600)을 끼워 그 고정핀(600)으로 힌지부(510)를 받쳐서 부력이 작용하지 않을 때 역류방지문(500)이 예각으로 기울어진 상태로 개전되게 한 것을 특징으로 하는 건축단지용 맨홀의 역류방지시설. When the buoyancy is not applied to the fixing hole 412 of the hinge bracket 400 by holding the fixing pin 600 to support the hinge portion 510 with the fixing pin 600 is inclined at an acute angle. A manhole backflow prevention facility for an architectural complex characterized in that it is opened in a closed state. 제 1항에 있어서,The method of claim 1, 상기 부력판(520)은, 선단 저면에 부력증강용 보조부력판(521)을 형성하여 된 것을 특징으로 하는 건축단지용 맨홀의 역류방지시설.The buoyancy plate (520), the backflow prevention facility of the manhole for the building complex, characterized in that the auxiliary buoyancy plate for buoyancy enhancement 521 is formed on the bottom end.
KR1020060072948A 2006-08-02 2006-08-02 Back flow prevention device of a manhole for building complexes KR100676369B1 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100893872B1 (en) 2008-11-13 2009-04-17 (주)태평개발 Odor preventing drain cover of manhole
CN102966172A (en) * 2011-08-30 2013-03-13 李郁松 Simple backflow prevention device for inspection well
KR101254870B1 (en) * 2011-03-10 2013-04-23 박진상 Air vent apparatus for preventing backward flow of rainwater from a roof
KR20190063224A (en) * 2017-11-29 2019-06-07 삼성중공업 주식회사 Preventing backflow device for drain
KR102653996B1 (en) * 2021-12-07 2024-04-02 전상훈 Odor-reducing trap for wastewater by relieve falling impact

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
한국등록실용공보 제20-367431호

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100893872B1 (en) 2008-11-13 2009-04-17 (주)태평개발 Odor preventing drain cover of manhole
KR101254870B1 (en) * 2011-03-10 2013-04-23 박진상 Air vent apparatus for preventing backward flow of rainwater from a roof
CN102966172A (en) * 2011-08-30 2013-03-13 李郁松 Simple backflow prevention device for inspection well
KR20190063224A (en) * 2017-11-29 2019-06-07 삼성중공업 주식회사 Preventing backflow device for drain
KR102060697B1 (en) * 2017-11-29 2020-02-11 삼성중공업 주식회사 Preventing backflow device for drain
KR102653996B1 (en) * 2021-12-07 2024-04-02 전상훈 Odor-reducing trap for wastewater by relieve falling impact

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