[go: up one dir, main page]

KR20090034154A - Buoy flap valve - Google Patents

Buoy flap valve Download PDF

Info

Publication number
KR20090034154A
KR20090034154A KR1020070099379A KR20070099379A KR20090034154A KR 20090034154 A KR20090034154 A KR 20090034154A KR 1020070099379 A KR1020070099379 A KR 1020070099379A KR 20070099379 A KR20070099379 A KR 20070099379A KR 20090034154 A KR20090034154 A KR 20090034154A
Authority
KR
South Korea
Prior art keywords
opening
closing door
flap valve
buoy
river
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.)
Ceased
Application number
KR1020070099379A
Other languages
Korean (ko)
Inventor
최윤영
안승섭
Original Assignee
최윤영
안승섭
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 최윤영, 안승섭 filed Critical 최윤영
Priority to KR1020070099379A priority Critical patent/KR20090034154A/en
Publication of KR20090034154A publication Critical patent/KR20090034154A/en
Ceased legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
    • E03F7/02—Shut-off devices
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
    • E02B7/20—Movable barrages; Lock or dry-dock gates
    • E02B7/50—Floating gates
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/18—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float
    • F16K31/20—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/60—Planning or developing urban green infrastructure

Landscapes

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

Abstract

본 발명은 부표식 플랩밸브에 관한 것으로, 그 목적은 플랩밸브를 하천제방에 완만한 경사면을 갖도록 설치하여 하천제방과 조화를 이루도록 하고, 적은 수압에 의해서도 하수를 용이하게 배출하도록 하기 위하여 밸브몸체에 대해 개폐도어의 기울기가 힌지점을 중심으로 25°~ 30°의 기울기를 갖도록 하고, 상기 개폐도어의 내부면에 부구를 설치하도록 하는 부표식 플랫밸브를 제공함에 있다. 이는 하천이나 해안으로 돌출된 하수 토구(40)에 설치되는 밸브몸체(10)와, 수압에 의해 개폐 작동되도록 상기 밸브몸체(10)에 힌지결합되어진 개폐도어(20)를 포함하는 플랩밸브에 있어서, 상기 개폐도어(20)는 힌지점을 중심으로 25°~ 30°의 기울기를 갖고, 상기 개폐도어(20)의 내부면에 수위에 의해 부력을 받는 부구(30)를 설치한 것이다.The present invention relates to a buoy-type flap valve, the purpose of which is to install a flap valve with a gentle slope on the river bank to harmonize with the river bank, to facilitate the discharge of sewage even by low water pressure It is to provide a buoy-type flat valve to the inclination of the opening and closing door to have a slope of 25 ° ~ 30 ° around the hinge point, and to install the buckle on the inner surface of the opening and closing door. This is in the flap valve including a valve body 10 installed in the sewage pit 40 protruding into the river or the coast, and an opening and closing door 20 hinged to the valve body 10 to open and close by water pressure. The door 20 has an inclination of 25 ° to 30 ° around the hinge point, and is provided with a buckle 30 that receives buoyancy by the water level on the inner surface of the door 20.

Description

부표식 플랩밸브{FLOAT TYPE FLAP VALVE}Float type flap valve {FLOAT TYPE FLAP VALVE}

본 발명은 부표식 플랩밸브에 관한 것으로, 더욱 상세하게는, 플랩밸브를 하천제방에 완만한 경사면을 갖도록 설치하여 하천제방과 조화를 이루도록 하고, 적은 수압에 의해서도 하수를 용이하게 배출하도록 하기 위하여 밸브몸체에 대해 개폐도어의 기울기가 힌지점을 중심으로 25°~ 30°의 기울기를 갖도록 하고, 상기 개폐도어의 내부면에 부구를 설치하도록 하는 부표식 플랫밸브를 제공함에 있다.The present invention relates to a buoy flap valve, and more particularly, to install a flap valve with a gentle slope on the river bank to harmonize with the river bank, so that the sewage can be easily discharged even by low water pressure The inclination of the opening and closing doors with respect to the body to have a slope of 25 ° ~ 30 ° around the hinge point, and to provide a buoy-type flat valve to install the buckle on the inner surface of the opening and closing doors.

근래에 하천 정비사업과 하수관거 정비사업으로 하천 제방이나 해안의 호안 등에 설치된 토구의 처리에 지자체 및 하천관리 관청에서 많은 고심을 하고 있는 실정이다. In recent years, local governments and river management offices have been struggling with the treatment of earthquakes installed on river banks and shore banks through river maintenance and sewage pipe maintenance projects.

즉, 토구는 도심의 하수(우수) 배제의 주요한 기능을 하고 있어 하천제방이나 도심의 해안의 호안 등에 토구의 설치가 불가피하나 합류식 하수배제용 토구의 경우 악취와 생태계적 하천주변 환경의 측면에서 개선이 절실히 요구되고 있는 실정이다. In other words, the earthenware is a major function of the exclusion of sewage in the city, so it is inevitable to install the earthenware on river banks or coastal shores of the city, but in the case of the combined sewage excavation earthenware, it is improved in terms of odor and ecological river environment. This situation is desperately required.

또한, 상기 토구에는 하천수 및 해수의 역류를 방지하기 위한 플랩밸브가 설치되어 있다.The earthenware is provided with a flap valve for preventing backflow of river water and seawater.

도 1은 종래에 따른 플랩밸브를 나타낸 측단면도이다.1 is a side cross-sectional view showing a flap valve according to the prior art.

도시된 바와 같이 플랩밸브는, 하천이나 해안으로 돌출된 하수 토구(3)에 설치되는 밸브몸체(1)와, 수압에 의해 개폐 작동되도록 상기 밸브몸체(1)에 힌지 결합되어진 개폐도어(2)를 포함하는 것이다.As shown in the figure, the flap valve includes a valve body 1 installed at a sewage outlet 3 protruding into a river or a coast, and an opening / closing door 2 hinged to the valve body 1 so as to be opened and closed by hydraulic pressure. It will include.

상기와 같이 구성된 밸브몸체(1)에 힌지 결합된 개폐도어(2)는 일정기울기 정확하게는 약 10°의 기울기를 갖게 되고, 일정 이상의 수압의 힘으로 개폐도어(2)를 밀어내어 도어를 열게 된다.The opening and closing door (2) hinged to the valve body (1) configured as described above has an inclination of approximately 10 °, and the door is opened by pushing the opening and closing door (2) by a certain pressure or more. .

그러나, 수압이 적을 때에는 적은 수압만으로는 금속재로 이루어진 중량의 개폐도어(2)를 밀어내지 못하여 플랩밸브를 이용한 배수가 이루어질 수 없게 된다.However, when the water pressure is small, only a small water pressure does not push the open / close door 2 of the weight made of a metal, so that the drainage using the flap valve cannot be made.

또한, 상기 개폐도어(2)의 기울기가 약 10°의 기울기를 갖게 되어 하천제방(4)에서 완만한 경사면(4a)을 갖지 못하여 하천제방(4)과 조화롭지 못한 문제점 있다.In addition, the inclination of the opening / closing door 2 has an inclination of about 10 ° and thus does not have a gentle inclined surface 4a in the river embankment 4 and thus is incompatible with the river embankment 4.

즉, 상기 플랩밸브는 급격한 기울기에 의해 하천제방(4) 측으로 들어가게 보여 외관상 보기가 좋지 못하게 된다.That is, the flap valve is seen to enter the river bank (4) side by a sharp slope, the appearance is not good.

본 발명은 이러한 종래의 문제점을 해결하기 위하여 이루어진 것으로, 그 목적은 플랩밸브를 하천제방에 완만한 경사면을 갖도록 설치하여 하천제방과 조화를 이루도록 하고, 적은 수압에 의해서도 하수를 용이하게 배출하도록 하기 위하여 밸브몸체에 대해 개폐도어의 기울기가 힌지점을 중심으로 25°~ 30°의 기울기를 갖 도록 하고, 상기 개폐도어의 내부면에 부구를 설치하도록 하는 부표식 플랫밸브를 제공함에 있다.The present invention has been made to solve such a conventional problem, and its object is to install a flap valve with a gentle slope on the river bank to harmonize with the river bank, so that the sewage can be easily discharged even by low water pressure. The inclination of the opening and closing doors with respect to the valve body to have a slope of 25 ° ~ 30 ° around the hinge point, and to provide a buoy-type flat valve to install the buckle on the inner surface of the opening and closing doors.

이러한 목적을 달성하기 위한 본 발명은, 하천이나 해안으로 돌출된 하수 토구에 설치되는 밸브몸체와, 수압에 의해 개폐 작동되도록 상기 밸브몸체에 힌지결합되어진 개폐도어를 포함하는 플랩밸브에 있어서, 상기 개폐도어는 힌지점을 중심으로 25°~ 30°의 기울기를 갖고, 상기 개폐도어의 내부면에 수위에 의해 부력을 받는 부구를 설치한 것이다.The present invention for achieving the above object, in the flap valve comprising a valve body installed in the sewage outlet protruding into the river or the coast, and an opening and closing door hinged to the valve body to open and close by water pressure, The door has an inclination of 25 ° to 30 ° around the hinge point, and is provided with a buoy receiving buoyancy by the water level on the inner surface of the opening and closing door.

또한, 상기 부구는, 하부의 체적을 크게 하여 부력이 작동을 원활히 하도록 하는 것이다.In addition, the buoy is to increase the volume of the lower portion so that the buoyancy smooth operation.

또한, 상기 개폐도어는, 적어도 두개 이상 설치하되, 상부에는 대유량에 의해 개방되도록 설치된 대형 개폐도어 및 하부에는 소유량에 의해 개방되도록 설치된 소형 개폐도어를 포함하는 것을 특징으로 하는 부표식 플랩밸브.In addition, the at least two opening and closing doors, the buoyancy flap valve, characterized in that it comprises a large opening and closing door installed in the upper portion to be opened by a large flow rate and the lower and a small opening and closing door to be opened by a small flow rate.

이상 상세히 설명한 바와 같은 본 발명의 부표식 플랩밸브는, 밸브몸체에 대해 개폐도어의 기울기가 힌지점을 중심으로 25°~ 30°의 기울기를 갖도록 하고, 상기 개폐도어의 내부면에 부구를 설치하도록 함으로서, 플랩밸브를 하천제방에 완만한 경사면을 갖도록 설치하여 하천제방과 조화를 이루도록 하고, 적은 수압에 의해서도 하수를 용이하게 배출할 수 있다.As described in detail above, the buoy flap valve of the present invention has an inclination of the opening / closing door with respect to the valve body such that the inclination of the opening / closing door has a slope of 25 ° to 30 ° with respect to the hinge point, and to install a buckle on the inner surface of the opening / closing door. In this way, the flap valve is installed to have a gentle slope on the river bank to harmonize with the river bank, and the sewage can be easily discharged even with a small water pressure.

이하 본 발명의 바람직한 실시예를 첨부된 도면에 의거하여 상세하게 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2 내지 도 7은 본 발명에 따른 플랩밸브를 나타낸 도면이다.2 to 7 is a view showing a flap valve according to the present invention.

도시된 바와 같이 플랩밸브(100)는, 하천이나 해안으로 돌출된 하수 토구(40)에 설치되는 밸브몸체(10)와, 수압에 의해 개폐 작동되도록 상기 밸브몸체(10)에 힌지결합되어진 개폐도어(20)를 포함한다.As shown, the flap valve 100, the valve body 10 is installed on the sewage outlet 40 protruding into the river or coast, and the opening and closing door hinged to the valve body 10 to open and close by hydraulic pressure And 20.

또한, 상기 개폐도어(20)는, 힌지점을 중심으로 25°~ 30°의 기울기를 갖도록 하는 것이 바람직하며, 이는 하천제방(50)에 완만한 경사면(51)을 갖도록 설치하여 하천제방(50)과 조화를 이루도록 하게 된다.In addition, the opening and closing door 20, it is preferable to have a slope of 25 ° ~ 30 ° around the hinge point, which is installed to have a gentle slope 51 on the river embankment (50) river embankment (50) ) In harmony with the

또한, 상기 개폐도어(20)의 내부면에 수위에 의해 부력을 받는 부구(30)가 설치하게 되는데, 상기 부구(30)는, 하부의 체적을 크게 하여 부력이 작동을 원활히 하도록 하는 것이 바람직하다.In addition, a buoy 30 that is buoyant by the water level is installed on the inner surface of the opening and closing door 20, it is preferable that the buoy 30 to increase the volume of the lower portion so that the buoyancy smooth operation. .

또한, 상기 개폐도어(20)는, 적어도 두개 이상 설치하되, 상부에는 대유량에 의해 개방되도록 설치된 대형 개폐도어(21) 및 하부에는 소유량에 의해 개방되도록 설치된 소형 개폐도어(22)를 포함하는 것이다.In addition, the opening and closing door 20 is provided with at least two, the upper and large opening and closing door 21 is installed to be opened by a large flow rate and the lower is to include a small opening and closing door 22 to be opened by a small flow rate. .

본 발명에서는 일실시예로 상부에 대형 개폐도어(21)를 설치하고, 하부에 소형 개폐도어(22) 두개를 설치한 것을 일예로 나타내었지만, 이에 한정되는 것은 아니고, 상,중,하로 각각 크기가 다른 개폐도어를 설치할 수도 있으며, 상,하로 크기가 다른 개폐도어를 설치할 수도 있을 것이다.In the present invention, as an example, the large opening and closing door 21 is installed in the upper portion, and the small opening and closing door 22 is installed in one example as an example, but is not limited to this, the size of each of the top, middle, down The other opening door may be installed, the opening doors of different sizes may be installed up and down.

한편, 미설명 부호 60은 개폐도어의 전방에 결합된 마감판을 나타낸다.On the other hand, reference numeral 60 denotes a closing plate coupled to the front of the opening and closing door.

상기와 같이 구성된 본 발명의 부표식 플랩밸브(100)는, 하천이나 해안으로 돌출된 하수 토구(40)에 설치하게 되는데, 종래에 비해 개폐도어(20)의 기울기가 25°~ 30°로 완만한 경사면(51)을 갖도록 설치하여 하천제방(50)과 완만한 경사면(51)을 가지면서 조화를 이루도록 하게 된다.(도 5 참고)The buoy flap valve 100 of the present invention configured as described above is installed in the sewage pit 40 protruding into a river or a coast, and the inclination of the opening / closing door 20 is gentle to 25 ° to 30 ° compared to the related art. It is installed to have one inclined surface 51 to have a river embankment 50 and a gentle inclined surface 51 to harmonize (see FIG. 5).

상기와 같이 부표식 플랩밸브(100)가 설치된 상태에서 내수위가 외수위보다 높게 되면 개폐도어(20)가 부구(30)의 부력에 의해 용이하게 개방되어지게 되는 것이며, 이때 소량의 유체에 의해서는 도 6에 도시한 바와 같이 밸브몸체(10)의 하단부에 설치된 소형 개폐도어(20)가 개방되는 것이고, 대량의 유체에 의해서는 도 7에 도시한 바와 같이 밸브몸체(10)의 상단부에 설치된 대형 개폐도어(20)가 개방되는 것이다.When the internal water level is higher than the external water level in the state in which the buoy flap valve 100 is installed as described above, the opening / closing door 20 is easily opened by the buoyancy of the buoy 30, and by a small amount of fluid 6 is a small opening and closing door 20 is installed in the lower end of the valve body 10 as shown in Figure 6, by a large amount of fluid is installed in the upper end of the valve body 10 as shown in Figure 7 The large opening and closing door 20 is to be opened.

또한, 내수위보다 외수위가 높게 되면, 개폐도어(20)가 폐쇄되어 하천측의 물이 내수위 측으로 유입을 차단하게 되는 것이다.In addition, when the external water level is higher than the internal water level, the opening and closing door 20 is closed to block the inflow of water on the river side to the internal water level.

도 2는 본 발명에 따른 플랩밸브를 나타낸 사시도.Figure 2 is a perspective view of the flap valve according to the present invention.

도 3은 본 발명에 따른 플랩밸브의 개방된 상태를 나타낸 사시도.Figure 3 is a perspective view showing an open state of the flap valve according to the present invention.

도 4는 본 발명에 따른 플랩밸브를 나타낸 평면도.Figure 4 is a plan view showing a flap valve according to the present invention.

도 5는 본 발명에 따른 플랩밸브를 나타낸 측단면도로서, 개폐도어가 닫힌 상태를 나타낸 도면.Figure 5 is a side cross-sectional view showing a flap valve according to the present invention, a view showing a closed door opening state.

도 6은 본 발명에 따른 플랩밸브를 나타낸 측단면도로서, 소형 개폐도어가 개방된 상태를 나타낸 도면.Figure 6 is a side cross-sectional view showing a flap valve according to the present invention, a state showing a small opening and closing door open.

도 7은 본 발명에 따른 플랩밸브를 나타낸 측단면도로서, 대형 개폐도어가 개방된 상태를 나타낸 도면.7 is a side sectional view showing a flap valve according to the present invention, showing a state in which a large open / close door is opened.

(도면중 주요 부분에 대한 부호의 설명)(Explanation of symbols for the main parts of the drawing)

100: 플랩밸브 10: 밸브몸체100: flap valve 10: valve body

20: 개폐도어 30: 부구20: opening and closing door 30: float

40: 하수 토구 50: 하천제방40: sewage pitch 50: river bank

51: 경사면51: slope

Claims (3)

하천이나 해안으로 돌출된 하수 토구(40)에 설치되는 밸브몸체(10)와, The valve body 10 is installed in the sewage pit 40 protruding into the river or the shore, 수압에 의해 개폐 작동되도록 상기 밸브몸체(10)에 힌지결합되어진 개폐도어(20)를 포함하는 플랩밸브에 있어서, In the flap valve comprising an opening and closing door 20 hinged to the valve body 10 to open and close by hydraulic pressure, 상기 개폐도어(20)는 힌지점을 중심으로 25°~ 30°의 기울기를 갖고, 상기 개폐도어(20)의 내부면에 수위에 의해 부력을 받는 부구(30)를 설치한 것을 특징으로 하는 부표식 플랩밸브.The opening and closing door 20 has an inclination of 25 ° to 30 ° around the hinge point, and the buoy 30 is provided on the inner surface of the opening and closing door 20 to receive buoyancy by the water level. Marked flap valve. 제1항에 있어서, 상기 부구(30)는, 하부의 체적을 크게 하여 부력이 작동을 원활히 하도록 하는 것을 특징으로 하는 부표식 플랩밸브.The buoy flap valve according to claim 1, wherein the buckle (30) increases the volume of the lower portion so that buoyancy can be smoothly operated. 제1항에 있어서, The method of claim 1, 상기 개폐도어(20)는, 적어도 두개 이상 설치하되, 상부에는 대유량에 의해 개방되도록 설치된 대형 개폐도어(21) 및 하부에는 소유량에 의해 개방되도록 설치된 소형 개폐도어(22)를 포함하는 것을 특징으로 하는 부표식 플랩밸브.The opening and closing door 20 is installed at least two, characterized in that it comprises a large opening and closing door 21 installed to open by a large flow rate in the upper portion and a small opening and closing door 22 installed to be opened by a small flow rate in the lower portion. Buoy flap valve.
KR1020070099379A 2007-10-02 2007-10-02 Buoy flap valve Ceased KR20090034154A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020070099379A KR20090034154A (en) 2007-10-02 2007-10-02 Buoy flap valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020070099379A KR20090034154A (en) 2007-10-02 2007-10-02 Buoy flap valve

Publications (1)

Publication Number Publication Date
KR20090034154A true KR20090034154A (en) 2009-04-07

Family

ID=40760183

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020070099379A Ceased KR20090034154A (en) 2007-10-02 2007-10-02 Buoy flap valve

Country Status (1)

Country Link
KR (1) KR20090034154A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100930685B1 (en) * 2009-08-18 2009-12-09 부산광역시환경시설공단 Sewage Discharge Buoy Automatic Gate Device
WO2013093387A1 (en) 2011-12-23 2013-06-27 Curinier Emmanuel Flow-limiting device
KR102003657B1 (en) 2019-02-21 2019-07-24 오병후 float valve
FR3150257A1 (en) 2023-06-21 2024-12-27 F-Reg FLOW CONTROL VALVE

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100930685B1 (en) * 2009-08-18 2009-12-09 부산광역시환경시설공단 Sewage Discharge Buoy Automatic Gate Device
WO2013093387A1 (en) 2011-12-23 2013-06-27 Curinier Emmanuel Flow-limiting device
FR2984987A1 (en) * 2011-12-23 2013-06-28 Emmanuel Marius Henri Curinier LIMITER OF FLOW LIMITER
US9488308B2 (en) 2011-12-23 2016-11-08 Emmanuel Curinier Flow-limiting device
KR102003657B1 (en) 2019-02-21 2019-07-24 오병후 float valve
FR3150257A1 (en) 2023-06-21 2024-12-27 F-Reg FLOW CONTROL VALVE

Similar Documents

Publication Publication Date Title
JP5661796B2 (en) Non-powered backflow prevention device
KR100835335B1 (en) Buoy automatic sluice
KR20090034154A (en) Buoy flap valve
CN105178421B (en) Intercepting well
KR101075941B1 (en) Watergate control apparatus
KR100812252B1 (en) Powerless Sluice Retractable Manhole
CN215482414U (en) Siltation preventing device for mixed flow pipe culvert intercepting groove
KR20040105680A (en) Vanished movable weir
KR100715233B1 (en) Water pump
KR200422006Y1 (en) Automatic ratio with counterweight for water and sewage
KR200429800Y1 (en) Automatic ratio with buoyancy function for sewer
KR200328176Y1 (en) A waster water counter current prevention valve
KR101613117B1 (en) An ecology river
KR200466377Y1 (en) A Sealing Rubber of Sluice Gate
JP2012149560A (en) Pressure accumulation type power generation apparatus, and highly airtight gate therein
KR200326120Y1 (en) The center of gravity movable flap valve
KR100930685B1 (en) Sewage Discharge Buoy Automatic Gate Device
KR200247934Y1 (en) Deposit oemoving apparatus of sluice
KR200371612Y1 (en) A river watergate for preventing separate and back flow, using gasket
CN210597523U (en) Structure for preventing toilet sewage from flowing backwards
KR200192073Y1 (en) A rubber member for preventing water leakage in watergate
KR200359070Y1 (en) The floodgate to combat flowing backward
CN217463343U (en) Backflow-preventing flap valve
CN2690463Y (en) A floating pressure anti-backflow spacer
CN219411117U (en) Check valve for water discharge pipeline of squatting pan of toilet

Legal Events

Date Code Title Description
A201 Request for examination
PA0109 Patent application

Patent event code: PA01091R01D

Comment text: Patent Application

Patent event date: 20071002

PA0201 Request for examination
PG1501 Laying open of application
E902 Notification of reason for refusal
PE0902 Notice of grounds for rejection

Comment text: Notification of reason for refusal

Patent event date: 20090427

Patent event code: PE09021S01D

E601 Decision to refuse application
PE0601 Decision on rejection of patent

Patent event date: 20090714

Comment text: Decision to Refuse Application

Patent event code: PE06012S01D

Patent event date: 20090427

Comment text: Notification of reason for refusal

Patent event code: PE06011S01I