KR101264097B1 - Steel grating having foreign substance influxing prevention function and bad smelling interception function and manufacturing method thereof - Google Patents

Steel grating having foreign substance influxing prevention function and bad smelling interception function and manufacturing method thereof Download PDF

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KR101264097B1
KR101264097B1 KR1020130011230A KR20130011230A KR101264097B1 KR 101264097 B1 KR101264097 B1 KR 101264097B1 KR 1020130011230 A KR1020130011230 A KR 1020130011230A KR 20130011230 A KR20130011230 A KR 20130011230A KR 101264097 B1 KR101264097 B1 KR 101264097B1
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weight
soil composition
frame
steel grating
soil
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KR1020130011230A
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Korean (ko)
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권봉석
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주식회사 휴트리
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C9/00—Special pavings; Pavings for special parts of roads or airfields
    • E01C9/10—Steel gratings ; Gratings made of material other than steel
    • 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
    • E03F5/06—Gully gratings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/42—Gratings; Grid-like panels
    • 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
    • F16S—CONSTRUCTIONAL ELEMENTS IN GENERAL; STRUCTURES BUILT-UP FROM SUCH ELEMENTS, IN GENERAL
    • F16S3/00—Elongated members, e.g. profiled members; Assemblies thereof; Gratings or grilles
    • F16S3/06—Assemblies of elongated members
    • F16S3/08—Assemblies of elongated members forming frameworks, e.g. gratings
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C2201/00—Paving elements
    • E01C2201/02—Paving elements having fixed spacing features
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C2201/00—Paving elements
    • E01C2201/20—Drainage details

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (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)
  • Road Paving Structures (AREA)

Abstract

PURPOSE: A steel grating for functioning as foreign substances and odor protection and a manufacturing method thereof are provided to effectively block the odor and foreign substances to flow in by filling a soil composition inside a steel grating. CONSTITUTION: A steel grating(100) comprises a frame(10), a partition wall(20), and a soil composition(30). The partition wall is installed inside the frame. The soil composition fills up the inside of the frame. The soil composition contains 10-30 weight% of natural soil, 40-60 weight% of bean gravel, 10-20 weight% of solid firming agent, 10-20 weight% of liquid hardening agent, and 5-10 weight% of inorganic extraction water.

Description

이물질 유입 방지기능과 악취차단기능을 구비한 스틸 그레이팅 및 그 제조방법{Steel Grating having foreign substance influxing prevention function and bad smelling interception function and manufacturing method thereof}Steel grating having foreign substance influxing prevention function and bad smelling interception function and manufacturing method

본 발명은 이물질 유입 방지기능과 악취차단기능을 구비한 스틸 그레이팅 및 그 제조방법에 관한 것으로, 보다 상세하게는 스틸 그레이팅의 내측 공간에 흙조성물을 충진함으로써 이물질이 전혀 유입되지 않고, 배수구로부터 올라오는 악취를 차단할 수 있으며, 투수성이 우수하여 빗물이 흙조성물을 원활히 통과하며, 강도가 우수하여 차량의 하중을 지탱할 수 있는, 이물질 유입 방지기능과 악취차단기능을 구비한 스틸 그레이팅 및 그 제조방법에 관한 것이다.
The present invention relates to a steel grating having a foreign matter inflow prevention function and an odor blocking function, and more particularly, by filling the soil composition in the inner space of the steel grating, no foreign matter is introduced therefrom, It can block odor, and excellent water permeability, rainwater can pass through soil composition smoothly, and it has good strength to support the load of the vehicle. It is about.

일반적으로 도로변에는 빗물의 범람을 방지하기 위하여 배수가 바르게 진행되도록 긴 통로로 형성되는 배수구를 형성하고, 이 배수구의 상부에는 안전을 위하여 스틸 그레이팅을 설치하고 있다.In general, in order to prevent the overflow of rainwater to form a drain to form a long passage so that drainage proceeds correctly, the upper portion of the drain is provided with steel grating for safety.

이러한 스틸 그레이팅은 도 1에 도시된 바와 같이 장방형의 사각체 프레임(1) 내부에 가로방향과 세로방향으로 일정한 간격을 유지하는 다수개의 격판(2)을 설치하여 안전을 도모하게 되는 것이다.This steel grating is to ensure safety by installing a plurality of diaphragms (2) to maintain a constant distance in the horizontal and vertical direction in the rectangular rectangular frame (1) as shown in FIG.

그러나 상기한 구조의 스틸 그레이팅은 격판(2) 사이의 공간(3)을 통하여 낙엽이나 담배꽁초를 비롯하여 각종 이물질이 유입됨으로써 배수구가 막히게 되어 배수 기능을 상실할 수 있고, 배수구의 악취가 올라와서 생활환경을 저해하며, 자동차 키와 같이 중요한 물건이 빠질 경우에 꺼내기가 어려운 문제가 있다.
However, the steel grating of the above-described structure may cause the drainage to become clogged due to the inflow of debris or tobacco butts through the spaces 3 between the diaphragms 2, thereby losing the drainage function, and the odor of the drainage rises. There is a problem that impairs the environment, and difficult to take out when an important object such as a car key is missing.

이를 개선하기 위한 종래 기술로 대한민국공개특허공보 제10-2009-0096942호(2009.09.15.)에 스틸 그레이팅이 개시되어 있다. 상기 스틸 그레이팅은 평상시에는 개폐수단이 관통공을 막아 이물질의 유입을 방지하는 장점이 있지만, 비가 오는 경우에는 열린 관통공을 통해 빗물뿐만 아니라 작은 이물질이 유입되는 문제가 있다.Steel grating is disclosed in Korean Patent Laid-Open Publication No. 10-2009-0096942 (2009.09.15.) As a conventional technique for improving this. The steel grating usually has the advantage of preventing the inflow of foreign matter by opening and closing means to block the through-holes in the rain, there is a problem that a small foreign matter as well as rain water through the open through-holes in the rain.

또한, 대한민국등록특허공보 제10-0965793호(2010.06.24.)에 도로용 배수구의 여과장치가 개시되어 있다. 상기 도로용 배수구의 여과장치는 배수구의 스틸 그레이팅 상부에 메인 여과판을 안착 설치하여 각종 이물질을 효율적으로 여과하는 장점이 있지만, 배출공을 통해 토사가 유입되는 문제가 있다.
In addition, the Republic of Korea Patent Publication No. 10-0965793 (2010.06.24.) Discloses a filtration device for a road drain. The filtration device of the road drain has the advantage of efficiently filtering various foreign matters by installing the main filter plate on the steel grating upper portion of the drain, but there is a problem that the soil is introduced through the discharge hole.

이에, 본 발명자는 스틸 그레이팅의 격자 형상의 배수공간에 흙조성물을 충진함으로써 이물질이 전혀 유입되지 않고, 배수구로부터 올라오는 악취를 차단할 수 있으며, 투수성이 우수하여 빗물이 흙조성물을 원활히 통과하며, 강도가 우수하여 차량의 하중을 지탱할 수 있는, 이물질 유입 방지기능과 악취차단기능을 구비한 스틸 그레이팅 및 그 제조방법을 개발하였다.
Thus, the present inventors can fill the soil composition into the grid-shaped drainage space of the steel grating, foreign matter does not flow at all, can block the odor coming from the drain, excellent water permeability, rain water smoothly passes through the soil composition, In order to support the load of the vehicle with excellent strength, it has developed a steel grating with a foreign material inflow prevention function and an odor blocking function and a manufacturing method thereof.

KR 10-2009-0096942 A 2009.09.15.KR 10-2009-0096942 A 2009.09.15. KR 10-0965793 B1 2010.06.24.KR 10-0965793 B1 2010.06.24.

본 발명의 목적은 스틸 그레이팅의 내부 공간에 흙조성물을 충진함으로써 이물질이 전혀 유입되지 않고, 배수구로부터 올라오는 악취를 차단할 수 있으며, 투수성이 우수하여 빗물이 흙조성물을 원활히 통과하며, 강도가 우수하여 차량의 하중을 지탱할 수 있는, 이물질 유입 방지기능을 구비한 스틸 그레이팅 및 그 제조방법을 제공하는 것이다.
An object of the present invention is to fill the internal composition of the steel grating to prevent the foreign matter from entering at all, to block the odor coming from the drain, and excellent water permeability, rain water smoothly passes through the soil composition, excellent strength It is to provide a steel grating with a foreign material inflow prevention function that can support the load of the vehicle and a manufacturing method thereof.

상기 목적을 달성하기 위하여 본 발명은 다음과 같은 수단을 제공한다.In order to achieve the above object, the present invention provides the following means.

본 발명은 프레임(10); 상기 프레임(10)의 내측 공간에 설치되는 격판(20); 및 상기 프레임(10) 내측 공간을 충진하는 흙조성물(30);을 포함하되, 상기 흙조성물은 자연토 10~30중량%, 콩자갈 40~60중량%, 고상 고화제 10~20중량%, 액상 경화제 10~20중량% 및 무기질 추출수 5~10중량%를 포함하는 것을 특징으로 하는 이물질 유입 방지기능과 악취차단기능을 구비한 스틸 그레이팅을 제공한다.The present invention frame 10; Diaphragm 20 installed in the inner space of the frame 10; And a soil composition (30) filling the inner space of the frame (10); wherein the soil composition is 10 to 30% by weight of natural soil, 40 to 60% by weight of soybean gravel, 10 to 20% by weight of solidifying agent, It provides a steel grating with a foreign matter intrusion prevention function and odor blocking function, characterized in that it comprises 10 to 20% by weight of the liquid curing agent and 5 to 10% by weight of the mineral extract.

상기 고상 고화제는 칼슘 설포 알루미네이트(Calcium Sulfo Aluminate)를 분쇄하여 제조한 고화제이며, 상기 액상 경화제는 리튬 실리케이트 80~90중량%에 아크릴 에멀전계 폴리머 10~20중량%를 혼합하여 30~40분 교반한 변성 리튬 실리케이트이며, 상기 무기질 추출수는 황토 49~53중량%, 장석 12~16중량%, 탄산칼슘(CaCO3) 15~19중량%, 수산화칼슘(Ca(OH)2) 6~10중량%, 질산칼슘(Ca(NO3)2) 4~8중량% 및 산화칼슘(CaO) 2~6중량%를 혼합하여 분말화한 무기질 파우더 0.5~2중량%를 98~99.5중량%의 물과 2~4시간 혼합한 후, 23~25시간 침전시키고 저온 열성 과정을 통하여 생산한 추출수인 것을 특징으로 한다.The solid state solidifying agent is a solidifying agent prepared by pulverizing calcium sulfo aluminate, and the liquid curing agent is 30-40 by mixing 10-20% by weight of an acrylic emulsion polymer with 80-90% by weight of lithium silicate. It is a modified lithium silicate stirred in minutes, the mineral extract water is 49 to 53% by weight of ocher, 12 to 16% by weight of feldspar, 15 to 19% by weight of calcium carbonate (CaCO3), 6 to 10% by weight of calcium hydroxide (Ca (OH) 2) %, 2 to 6% by weight of calcium nitrate (Ca (NO3) 2) and 2 to 6% by weight of calcium oxide (CaO) are mixed, 98 to 99.5% by weight of water and 2 After mixing for 4 hours, it is precipitated for 23 to 25 hours and characterized in that the extraction water produced through a low-temperature recessive process.

또한, 본 발명은, 흙조성물을 제조하는 단계(단계 1); 격판이 설치된 프레임을 엎어놓는 단계(단계 2); 상기 프레임의 내측 공간에 상기 흙조성물을 충진하는 단계(단계 3); 및 상기 흙조성물을 양생하는 단계(단계 4); 를 포함하되, 상기 단계 1에서, 상기 흙조성물은 콩자갈 40~60중량%에 자연토 10~30중량% 및 고상 고화제 10~20중량%를 고르게 혼합하고, 액상 경화제 10~20중량%와 무기질 추출수 5~10중량%를 혼합하여 상기 자연토 및 고상 고화제가 혼합된 콩자갈에 투입하여 제조하는 것을 특징으로 하는 이물질 유입 방지기능과 악취차단기능을 구비한 스틸 그레이팅의 제조방법을 제공한다.In addition, the present invention comprises the steps of preparing a soil composition (step 1); Laying up the frame on which the diaphragm is installed (step 2); Filling the soil composition into an inner space of the frame (step 3); And curing the soil composition (step 4); Including, in the step 1, the soil composition is evenly mixed with 10 to 30% by weight of natural soil and 10 to 20% by weight of solidified solidifying agent in 40 to 60% by weight soybean, and 10 to 20% by weight of the liquid curing agent Providing a method for producing steel grating with a foreign material inflow prevention function and odor blocking function, characterized in that by mixing 5 ~ 10% by weight of the mineral extract water into soybeans mixed with the natural soil and solidifying agent do.

상기 단계 3에서, 상기 흙조성물의 높이(d)은 상기 프레임 높이(D)의 0.5~0.8이 되도록 충진하는 것을 특징으로 한다.In the step 3, the height (d) of the soil composition is characterized in that the filling to be 0.5 ~ 0.8 of the frame height (D).

상기 단계 4는, 15~40℃의 온도 조건에서, 7~9시간 동안 양생하는 것을 특징으로 한다.
Step 4 is characterized in that curing for 7 to 9 hours at a temperature of 15 ~ 40 ℃.

본 발명에 따른 이물질 유입 방지기능과 악취차단기능을 구비한 스틸 그레이팅은, 내측 공간에 흙조성물을 충진함으로써 이물질이 전혀 유입되지 않음으로 배수구가 막혀 역류가 발생하는 것을 방지할 수 있고, 배수구로부터 올라오는 심한 악취를 효과적으로 차단할 수 있으며, 투수성이 우수하여 빗물이 흙조성물을 원활히 통과하며, 강도가 우수하여 차량의 하중을 지탱할 수 있으며, 내화성 및 미끄럼방지기능이 우수한 장점이 있다. 아울러 자동차 키와 같이 중요한 물건이 내측 공간으로 빠지는 것을 방지할 수 있다.
Steel grating with a foreign material inflow prevention function and odor blocking function according to the present invention, by filling the soil composition in the inner space can prevent the drainage is blocked by the inflow of the foreign matter is not introduced at all, it is raised from the drain It can effectively block severe odors coming from it, and the rainwater flows smoothly through the soil composition because of its excellent permeability, and it can support the load of the vehicle with its high strength, and it has the advantage of excellent fire resistance and anti-slip function. In addition, important items such as car keys can be prevented from falling into the inner space.

도 1은 종래의 스틸 그레이팅의 사시도.
도 2는 본 발명의 실시예에 따른 이물질 유입 방지기능과 악취차단기능을 구비한 스틸 그레이팅의 사시도.
도 3은 본 발명의 실시예에 따른 이물질 유입 방지기능과 악취차단기능을 구비한 스틸 그레이팅의 저면사시도.1 is a perspective view of a conventional steel grating.
Figure 2 is a perspective view of the steel grating with a foreign matter inflow prevention function and odor blocking function according to an embodiment of the present invention.
Figure 3 is a bottom perspective view of the steel grating with a foreign matter inflow prevention function and odor blocking function according to an embodiment of the present invention.

이하, 본 발명을 상세히 설명하면 다음과 같다.
Hereinafter, the present invention will be described in detail.

도 2는 본 발명의 실시예에 따른 이물질 유입 방지기능과 악취차단기능을 구비한 스틸 그레이팅의 사시도이다.
Figure 2 is a perspective view of the steel grating with a foreign matter inflow prevention function and odor blocking function according to an embodiment of the present invention.

도 2를 참조하여 본 발명에 따른 이물질 유입 방지기능과 악취차단기능을 구비한 스틸 그레이팅을 설명한다.
With reference to Figure 2 will be described a steel grating with a foreign matter inflow prevention function and odor blocking function according to the present invention.

본 발명에 따른 이물질 유입 방지기능과 악취차단기능을 구비한 스틸 그레이팅(100)은, 프레임(10); 상기 프레임(10)의 내측 공간에 설치되는 격판(20); 및 상기 프레임(10) 내측 공간을 충진하는 흙조성물(30);을 포함한다.
Steel grating 100 having a foreign matter inflow prevention function and odor blocking function according to the present invention, the frame 10; Diaphragm 20 installed in the inner space of the frame 10; And a soil composition 30 filling the inner space of the frame 10.

상기 프레임(10)의 형상은 특별히 한정되지 아니하며, 일반적으로 사각의 형태로 제작될 수 있다. 상기 프레임(10)의 재질은 금속을 사용하되, 금속의 종류는 특별히 한정되지 아니한다. The shape of the frame 10 is not particularly limited and may be generally manufactured in the form of a square. The material of the frame 10 is metal, but the type of metal is not particularly limited.

상기 격판(20)의 형상은 특별히 한정되지 아니하며, 일반적으로 가로방향과 세로방향으로 일정한 간격을 유지하여, 다수개의 격자 형상의 공간이 형성될 수 있다.The shape of the diaphragm 20 is not particularly limited, and in general, a plurality of lattice-shaped spaces may be formed by maintaining a constant distance in a horizontal direction and a vertical direction.

상기 흙조성물(30)은 상기 프레임(10) 내측 공간에 격판(20)에 의하여 구획되는 다수의 공간에 충진된다.The soil composition 30 is filled in a plurality of spaces partitioned by the diaphragm 20 in the inner space of the frame 10.

본 발명은 스틸 그레이팅(100) 내측 공간에 상기 흙조성물(30)을 충진함으로써 담배꽁초, 낙엽, 자동차 키와 같이 일정 크기의 이물질뿐만 아니라 토사와 같이 매우 미세한 이물질의 유입도 방지할 수 있고, 배수구로부터 올라오는 악취를 차단할 수 있는 것에 특징이 있다.The present invention, by filling the soil composition 30 in the inner space of the steel grating 100 can prevent the inflow of very fine foreign matter, such as soil, as well as foreign matter of a certain size, such as cigarette butts, leaves, car keys, drains It is characterized by being able to block odor coming up from.

상기 흙조성물(30)은 투수성이 우수하여 폭우가 내려도 빗물을 용이하게 통과시킬 수 있으며, 강도가 우수하여 자동차의 하중을 견딜 수 있는 장점이 있다.The soil composition 30 is excellent in permeability and can easily pass rainwater even in heavy rain, and has the advantage of being able to withstand the load of the vehicle because of its excellent strength.

또한, 상기 흙조성물(30)은 접착력이 우수하여, 상기 프레임(10) 및 격판(20)에 견고하게 접착되므로, 차량이 상부로 통과하여도 분리되지 않는 장점이 있다.
In addition, the soil composition 30 is excellent in adhesive strength, because it is firmly bonded to the frame 10 and the diaphragm 20, there is an advantage that the vehicle does not separate even if passed through.

상기 흙조성물(30)은 자연토 10~30중량%, 콩자갈 40~60중량%, 고상 고화제 10~20중량%, 액상 경화제 10~20중량% 및 무기질 추출수 5~10중량%를 포함한다.The soil composition 30 includes 10 to 30% by weight of natural soil, 40 to 60% by weight of soybean gravel, 10 to 20% by weight of solidifying solidifying agent, 10 to 20% by weight of liquid curing agent, and 5 to 10% by weight of mineral extracting water. do.

상기 자연토는 일반적인 흙으로서 특별히 한정되지 아니하나, 마사토를 사용하는 것이 바람직하다.The natural soil is not particularly limited as general soil, but it is preferable to use masato.

상기 콩자갈은 빗물 투수의 공간 확보 및 주위 환경과의 조화로운 색감을 제공하기 위해 포함된다. 상기 콩자갈은 직경 3~8㎜인 콩자갈을 사용하는 것이 바람직하다.The soybeans are included to secure the space of the rainwater pitcher and provide a harmonious color with the surrounding environment. It is preferable to use soybeans having a diameter of 3 to 8 mm.

상기 고상 고화제는 석회, 석고, 보크사이트(Bauxite)를 주성분으로 하는 소성 화합물인 칼슘 설포 알루미네이트(Calcium Sulfo Alumivate)를 분쇄하여 클링커(Clinker) 형태로 제조되며, 이러한 클링커는 3CaO·3Al2O3·CaSO4인 아우인(Hauyne), CaO·CaSO4인 유리석회 및 CaSO4인 무수석고라는 3가지 광물을 포함한다. 상기 3가지 광물이 수화반응에 의해 칼슘 설포 알루미네이트 수화물을 생성하는데, 상기 수화반응에서 3CaO·3Al2O3·CaSO432H2O인 에트링자이트(Ettringite)라는 침상의 결정이 생성된다. 상기 칼슘 설포 알루미네이트(CSA)는 3CaO·3Al2O3·CaSO로 이루어진 화합물로서, 상기 칼슘 설포 알루미네이트(CSA)는 수화하여 에트링자이트를 생성하며, 각 조성에 따라 팽창성, 급경성 또는 고강도성이 발현될 수 있다.The solidifying agent is prepared in the form of a clinker by pulverizing calcium sulfo aluminate, a calcining compound composed mainly of lime, gypsum and bauxite, and the clinker is formed of 3CaO.3Al 2 O. 3 · CaSO 4 phosphorus Auyne (Hauyne), CaO · CaSO 4 phosphorus lime, and CaSO 4 phosphorus gypsum includes three minerals. The three minerals produce calcium sulfo aluminate hydrate by the hydration reaction, which produces a needle crystal called Ettringite, which is 3CaO.3Al 2 O 3 .CaSO 4 32H 2 O. The calcium sulfo aluminate (CSA) is a compound consisting of 3CaO · 3Al 2 O 3 · CaSO, the calcium sulfo aluminate (CSA) is hydrated to produce ettringite, depending on the composition, expandable, rapid or High strength may be expressed.

상기 액상 경화제는 변성 리튬 실리케이트 조성물로서, 리튬 실리케이트(Lithium Silicates) 조성물의 장점은 규산나트륨이나 규산칼륨보다 더 높은 몰 비의 액상 제품을 만들 수 있다는 것이다. 리튬실리케이트 용액을 가열하면 리튬이온은 높은 온도에서 칼슘이온처럼 침전 특성을 보이는데, 이러한 현상은 가역 반응이다. 또한, 이러한 리튬실리케이트 용액은 뜨거우면 고형화되고, 25℃ 정도에서 냉각시키면 수 시간 내에 다시 투명하고 안정된 액체의 리튬 실리케이트가 된다. 이러한 리튬 실리케이트의 SiO2 농도가 20~25%이고, 몰비가 8에 가까워 실온에서 안정하고 점도가 낮다. 이러한 리튬 실리케이트의 안정성은 수화된 리튬이온이 수화된 나트륨이나 칼륨이온 보다 더 커서 수화된 양이온은 큰 실리카 미셀들(Micelles)을 안정시킬 수 있다. 이러한 리튬 실리케이트 80~90중량%에 아크릴 에멀전계 폴리머 10~20중량%를 혼합하여 30~40분 교반하면 액상 경화제인 변성 리튬 실리케이트 조성물이 생성된다. 여기서, 각종 계면활성제와 지방질분자는 극성기와 무극성 소수기로 이루어져 있고, 양자의 균형에 따라 분자의 회합 상태가 변한다. 이들 분자는 용액 중에서 반데르발스(van der Waals) 힘 등에 의해서 회합하여 열역학적으로 안정한 회합체를 만들어 콜로이드성을 나타내는데, 이러한 회합체를 미셀이라고 한다.The liquid curing agent is a modified lithium silicate composition, the advantage of the lithium silicate (Lithium Silicates) composition is that it can make a liquid product of a higher molar ratio than sodium silicate or potassium silicate. When the lithium silicate solution is heated, the lithium ions are precipitated like calcium ions at high temperatures, which is a reversible reaction. In addition, such a lithium silicate solution solidifies when it is hot, and when cooled at about 25 ° C., it becomes a transparent and stable liquid lithium silicate within a few hours. The SiO 2 concentration of this lithium silicate is 20-25%, the molar ratio is close to 8, stable at room temperature, and low in viscosity. The stability of this lithium silicate is greater than the hydrated sodium or potassium ions so that the hydrated cation can stabilize the large silica micelles (Micelles). 80 to 90% by weight of such a lithium silicate is mixed with 10 to 20% by weight of an acrylic emulsion polymer, and stirred for 30 to 40 minutes to produce a modified lithium silicate composition which is a liquid curing agent. Here, various surfactants and lipid molecules are composed of a polar group and a nonpolar hydrophobic group, and the association state of the molecules changes depending on the balance between them. These molecules are associated with van der Waals forces in a solution to form thermodynamically stable associations and show colloidal properties. These associations are called micelles.

상기 무기질 추출수는 황토 49~53중량%, 장석 12~16중량%, 탄산칼슘(CaCO3) 15~19중량%, 수산화칼슘(Ca(OH)2) 6~10중량%, 질산칼슘(Ca(NO3)2) 4~8중량% 및 산화칼슘(CaO) 2~6중량%를 혼합하여 분말화한 무기질 파우더 0.5~2중량%를 98~99.5중량%의 물과 2~4시간 혼합한 후, 23~25시간 침전시키고 저온 열성 과정을 통하여 생산한 추출수이다.The mineral extract is 49 to 53% by weight of ocher, 12 to 16% by weight of feldspar, 15 to 19% by weight of calcium carbonate (CaCO 3 ), 6 to 10% by weight of calcium hydroxide (Ca (OH) 2 ), calcium nitrate (Ca ( NO 3 ) 2 ) 0.5 to 2% by weight of inorganic powder powdered by mixing 4 to 8% by weight and 2 to 6% by weight of calcium oxide (CaO) after mixing with 98 to 99.5% by weight of water for 2 to 4 hours This is the extract water produced by sedimentation for 23 ~ 25 hours and low temperature recession process.

상기 액상 경화제와 상기 고상 고화제가 접촉하게 되면, 잠재 수경성의 특성을 갖는 고상 고화제의 입자 피막이 파괴되고, 이러한 입자를 구성하는 Si-O와 Al-O의 공유결합이 끊어지면서 Si이온과 Al이온을 용탈시킨 상태에서 자연토와 혼합된다. 이때, 무기질 폴리머(Polymer) 반응에 의하여 mM2O·nSiO2·Al2O3·xH2O가 형성된다. 여기서, M은 K, Na 또는 Ca 일 수 있다. 이러한 반응물질에 무기질 추출수의 혼합으로 인해 내구성이 우수하고 친환경적인 흙조성물을 제조할 수 있다.
When the liquid curing agent and the solidifying agent come into contact with each other, the particle film of the solidifying solidifying agent having latent hydraulic properties is destroyed, and the covalent bond between Si-O and Al-O constituting such particles is broken, thereby causing the Si ion and Al to be broken. It is mixed with natural soil in the state of eluting ions. At this time, mM 2 O.nSiO 2 Al 2 O 3 xH 2 O is formed by the reaction of an inorganic polymer. Here, M may be K, Na or Ca. Due to the mixing of the inorganic extract water with these reactants, it is possible to produce a durable and environmentally friendly earth composition.

도 3은 본 발명에 따른 이물질 유입 방지기능과 악취차단기능을 구비한 스틸 그레이팅의 저면사시도이다.
Figure 3 is a bottom perspective view of the steel grating with a foreign matter inflow prevention function and odor blocking function according to the present invention.

다음은 도 3을 참조하여 본 발명에 따른 이물질 유입 방지기능과 악취차단기능을 구비한 스틸 그레이팅의 제조방법을 설명한다.
Next, with reference to Figure 3 will be described a manufacturing method of the steel grating having a foreign matter inflow prevention function and odor blocking function according to the present invention.

본 발명에 따른 이물질 유입 방지기능과 악취차단기능을 구비한 스틸 그레이팅(100)의 제조방법은, Manufacturing method of the steel grating 100 having a foreign matter inflow prevention function and odor blocking function according to the present invention,

흙조성물(30)을 제조하는 단계(단계 1);Preparing a soil composition 30 (step 1);

격판(20)이 설치된 프레임(10)을 엎어놓는 단계(단계 2);Laying up the frame 10 on which the diaphragm 20 is installed (step 2);

상기 프레임(10)의 내측 공간에 상기 흙조성물(30)을 충진하는 단계(단계 3); 및Filling the soil composition 30 in an inner space of the frame 10 (step 3); And

상기 흙조성물(30)을 양생하는 단계(단계 4);Curing the soil composition 30 (step 4);

를 포함한다.
.

상기 단계 1에서, 상기 흙조성물(30)은 콩자갈 40~60중량%에 자연토 10~30중량% 및 고상 고화제 10~20중량%를 고르게 혼합하고, 액상 경화제 10~20중량%와 무기질 추출수 5~10중량%를 혼합하여 상기 자연토 및 고상 고화제가 혼합된 콩자갈에 투입하여 제조하는 것이 바람직하다.In the step 1, the soil composition 30 is evenly mixed with 10 to 30% by weight of natural soil and 10 to 20% by weight of solidifying solidifying agent to 40 to 60% by weight of soybean gravel, 10 to 20% by weight of liquid curing agent and inorganic 5 to 10% by weight of the extraction water is preferably prepared by adding to the soybeans mixed with the natural soil and solidifying agent.

상기 고상 고화제는 칼슘 설포 알루미네이트(Calcium Sulfo Aluminate)를 분쇄하여 제조한 고화제일 수 있다.The solid phase solidifying agent may be a solidifying agent prepared by grinding calcium sulfo aluminate.

상기 액상 경화제는 리튬 실리케이트 80~90중량%에 아크릴 에멀전계 폴리머 10~20중량%를 혼합하여 30~40분 교반한 변성 리튬 실리케이트일 수 있다. The liquid curing agent may be a modified lithium silicate, which is stirred for 30 to 40 minutes by mixing 10 to 20% by weight of an acrylic emulsion polymer with 80 to 90% by weight of lithium silicate.

상기 무기질 추출수는 황토 49~53중량%, 장석 12~16중량%, 탄산칼슘(CaCO3) 15~19중량%, 수산화칼슘(Ca(OH)2) 6~10중량%, 질산칼슘(Ca(NO3)2) 4~8중량% 및 산화칼슘(CaO) 2~6중량%를 혼합하여 분말화한 무기질 파우더 0.5~2중량%를 98~99.5중량%의 물과 2~4시간 혼합한 후, 23~25시간 침전시키고 저온 열성 과정을 통하여 생산한 추출수일 수 있다.
The mineral extract is 49 to 53% by weight of ocher, 12 to 16% by weight of feldspar, 15 to 19% by weight of calcium carbonate (CaCO 3 ), 6 to 10% by weight of calcium hydroxide (Ca (OH) 2 ), calcium nitrate (Ca ( NO 3 ) 2 ) 0.5 to 2% by weight of inorganic powder powdered by mixing 4 to 8% by weight and 2 to 6% by weight of calcium oxide (CaO) after mixing with 98 to 99.5% by weight of water for 2 to 4 hours For example, the extract may be precipitated for 23 to 25 hours and produced through a low temperature recessive process.

상기 단계 2는 격판(20)이 설치된 프레임(10)을 철판 위에 엎어놓는 단계이다. 상기 프레임(10)과 격판(20)의 재질과 형상은 특별히 한정되지 아니하며, 종래의 스틸 그레이팅은 어느 것이든 사용해도 무방하다. Step 2 is a step of laying the frame 10, the diaphragm 20 is installed on the iron plate. The material and shape of the frame 10 and the diaphragm 20 are not particularly limited, and any conventional steel grating may be used.

상기 격판(20)이 설치된 프레임(10)을 철판 위에 엎어 놓는 이유는, 흙조성물(30)을 상기 프레임(10) 높이 만큼 충진하지 않아도 되기 때문에, 흙조성물(30)을 충진하고 양생한 이후 도로변에 설치하는 경우에, 흙조성물(30)의 윗부분이 도로와 수평이 되도록 하기 위함이다.
The reason why the plate 10 is placed on the iron plate is installed on the plate 20, since the soil composition 30 does not have to be filled as high as the frame 10, and the soil composition 30 is filled and cured. In the case of installation in, the upper part of the soil composition 30 is to be horizontal to the road.

상기 단계 3에서, 상기 흙조성물(30)의 높이(d)는 상기 프레임(10) 높이(D)의 0.5~0.8이 되도록 충진하는 것이 바람직하다. 상기 프레임(10) 높이(D) 대비 상기 충진된 흙조성물(30)의 높이(d)가 0.5 미만 되면 강도가 미흡할 수 있고, 0.8 초과 되면 투수율이 미흡할 수 있다.
In step 3, the height (d) of the soil composition 30 is preferably filled to be 0.5 ~ 0.8 of the height (D) of the frame (10). When the height d of the filled soil composition 30 is less than 0.5 compared to the height D of the frame 10, the strength may be insufficient, and when the ratio is greater than 0.8, the permeability may be insufficient.

상기 단계 4에서, 상기 흙조성물(30)을 다진 후, 15~40℃의 온도 조건에서 7~9시간 동안 양생하는 것이 바람직하다.
In the step 4, the earth composition 30 is minced, it is preferable to cure for 7 to 9 hours at a temperature condition of 15 ~ 40 ℃.

이하, 실시 예를 통하여 본 발명의 구성 및 효과를 더욱 상세히 설명하고자 한다. 이들 실시 예는 오로지 본 발명을 예시하기 위한 것일 뿐 본 발명의 범위가 이들 실시 예에 의해 제한되는 것은 아니다.
Hereinafter, the constitution and effects of the present invention will be described in more detail through examples. These examples are only for illustrating the present invention, but the scope of the present invention is not limited by these examples.

칼슘 설포 알루미네이트(Calcium Sulfo Aluminate)를 분쇄하여 고상 고화제를 제조하였다. 리튬 실리케이트 85중량%에 아크릴 에멀전계 폴리머 15중량%를 혼합하고 35분 동안 교반하여 액상 경화제를 제조하였다. 황토 50중량%, 장석 15중량%, 탄산칼슘(CaCO3) 17중량%, 수산화칼슘(Ca(OH)2) 8중량%, 질산칼슘(Ca(NO3)2) 6중량% 및 산화칼슘(CaO) 4중량%를 혼합하여 분말화한 무기질 파우더 1중량%를 99중량%의 물과 3시간 혼합한 후, 24시간 침전시키고 저온 열성 과정을 통하여 무기질 추출수를 제조하였다.Calcium Sulfo Aluminate was ground to prepare a solidifying solidifying agent. 15 wt% of the acrylic emulsion polymer was mixed with 85 wt% of the lithium silicate and stirred for 35 minutes to prepare a liquid curing agent. 50% by weight of ocher, 15% by weight of feldspar, 17% by weight of calcium carbonate (CaCO 3 ), 8% by weight of calcium hydroxide (Ca (OH) 2 ), 6% by weight of calcium nitrate (Ca (NO 3 ) 2 ) and calcium oxide (CaO 1% by weight of the powdered inorganic powder was mixed with 99% by weight of water for 3 hours, and then precipitated for 24 hours, and inorganic extract water was prepared through a low temperature thermal process.

콩자갈 45중량%에 마사토 20중량% 및 상기 고상 고화제 15중량%를 고르게 혼합하고, 상기 액상 경화제 15중량%와 상기 무기질 추출수 5중량%를 혼합하여 상기 마사토 및 고상 고화제가 혼합된 콩자갈에 투입하여 흙조성물을 제조하였다. 상기 콩자갈은 직경이 4~6㎜인 콩자갈을 사용하였다.Beans mixed with 45% by weight of Masato 20% by weight and 15% by weight of the solidified solidifying agent, 15% by weight of the liquid curing agent and 5% by weight of the mineral extract water mixed with the Masato and solidified solidified It was added to the gravel to prepare a soil composition. The soybeans were used soybeans with a diameter of 4 ~ 6mm.

상기 흙조성물을 가로×세로×높이가 5㎝×5㎝×5㎝ 되도록 성형한 후, 20℃에서 8시간 동안 양생하였다.
The soil composition was molded to have a width × length × height of 5 cm × 5 cm × 5 cm, and then cured at 20 ° C. for 8 hours.

[실험예 1][Experimental Example 1]

실시예 1에서 제조한 흙조성물의 투수계수를 시험하기 위하여 한국건설생활환경시험연구원에 시험의뢰하였으며, 시험결과를 표 1에 나타내었다.
In order to test the permeability coefficient of the soil composition prepared in Example 1, the test was commissioned by the Korea Institute of Construction and Living Environment Testing, and the test results are shown in Table 1.

시험항목Test Items 단위unit 시험방법Test Methods 시험결과Test result 투수계수Permeability coefficient ㎜/secMm / sec KS F 4419 : 2009KS F 4419: 2009 2.62.6

투수성 블록의 투수계수 품질기준(KS F 4419)이 0.1㎜/sec이상인 것을 고려할 때, 표 1에서 보는 바와 같이, 실시예 1에서 제조한 흙조성물의 투수계수가 2.6㎜/sec으로 확인되었으므로, 본 발명에 따른 이물질 유입 방지기능을 구비한 스틸 그레이팅은 투수성이 매우 뛰어난 것을 알 수 있다.
Considering that the permeability coefficient quality standard (KS F 4419) of the permeable block is 0.1 mm / sec or more, as shown in Table 1, the permeability coefficient of the soil composition prepared in Example 1 was confirmed to be 2.6 mm / sec, Steel grating with a foreign material inflow prevention function according to the present invention can be seen that the water permeability is very excellent.

본 발명에 따른 이물질 유입 방지기능과 악취차단기능을 구비한 스틸 그레이팅은, 내측 공간에 흙조성물을 충진함으로써 이물질이 전혀 유입되지 않음으로 배수구가 막혀 역류가 발생하는 것을 방지할 수 있고, 배수구로부터 올라오는 심한 악취를 효과적으로 차단할 수 있으며, 투수성이 우수하여 빗물이 흙조성물을 원활히 통과하며, 강도가 우수하여 차량의 하중을 지탱할 수 있으며, 내화성 및 미끄럼방지기능이 우수한 장점이 있다. 아울러 자동차 키와 같이 중요한 물건이 내측 공간으로 빠지는 것을 방지할 수 있다.
Steel grating with a foreign material inflow prevention function and odor blocking function according to the present invention, by filling the soil composition in the inner space can prevent the drainage is blocked by the inflow of the foreign matter is not introduced at all, it is raised from the drain It can effectively block severe odors coming from it, and the rainwater flows smoothly through the soil composition because of its excellent permeability, and it can support the load of the vehicle with its high strength, and it has the advantage of excellent fire resistance and anti-slip function. In addition, important items such as car keys can be prevented from falling into the inner space.

1 : 프레임 2 : 격판
3: 공간
10 : 프레임 20 : 격판
30 : 흙조성물 100 : 스틸 그레이팅1: frame 2: diaphragm
3: space
10: frame 20: diaphragm
30: soil composition 100: steel grating

Claims (6)

삭제delete 프레임; 상기 프레임의 내측 공간에 설치되는 격판; 및 상기 프레임 내측 공간을 충진하는 흙조성물;을 포함하되,
상기 흙조성물은 자연토 10~30중량%, 콩자갈 40~60중량%, 고상 고화제 10~20중량%, 액상 경화제 10~20중량% 및 무기질 추출수 5~10중량%를 포함하며,
상기 고상 고화제는 칼슘 설포 알루미네이트(Calcium Sulfo Aluminate)를 분쇄하여 제조한 고화제이며,
상기 액상 경화제는 리튬 실리케이트 80~90중량%에 아크릴 에멀전계 폴리머 10~20중량%를 혼합하여 30~40분 교반한 변성 리튬 실리케이트이며,
상기 무기질 추출수는 황토 49~53중량%, 장석 12~16중량%, 탄산칼슘(CaCO3) 15~19중량%, 수산화칼슘(Ca(OH)2) 6~10중량%, 질산칼슘(Ca(NO3)2) 4~8중량% 및 산화칼슘(CaO) 2~6중량%를 혼합하여 분말화한 무기질 파우더 0.5~2중량%를 98~99.5중량%의 물과 2~4시간 혼합한 후, 23~25시간 침전시키고 저온 열성 과정을 통하여 생산한 추출수인 것을 특징으로 하는 이물질 유입 방지기능과 악취차단기능을 구비한 스틸 그레이팅.
frame; Diaphragm installed in the inner space of the frame; And a soil composition filling the inner space of the frame.
The soil composition includes 10 to 30% by weight of natural soil, 40 to 60% by weight of soybean gravel, 10 to 20% by weight of solidifying solidifying agent, 10 to 20% by weight of liquid curing agent, and 5 to 10% by weight of mineral extract water.
The solid state solidifying agent is a solidifying agent prepared by grinding calcium sulfo aluminate,
The liquid curing agent is a modified lithium silicate, which is stirred for 30 to 40 minutes by mixing 10 to 20% by weight of an acrylic emulsion polymer with 80 to 90% by weight of lithium silicate,
The mineral extract is 49 to 53% by weight of ocher, 12 to 16% by weight of feldspar, 15 to 19% by weight of calcium carbonate (CaCO 3 ), 6 to 10% by weight of calcium hydroxide (Ca (OH) 2 ), calcium nitrate (Ca ( NO 3 ) 2 ) 0.5 to 2% by weight of inorganic powder powdered by mixing 4 to 8% by weight and 2 to 6% by weight of calcium oxide (CaO) after mixing with 98 to 99.5% by weight of water for 2 to 4 hours , Steel grating with sedimentation prevention function and odor blocking function, characterized in that the extraction water produced through 23-25 hours precipitation and low-temperature recessive process.
삭제delete 흙조성물을 제조하는 단계(단계 1);
격판이 설치된 프레임을 엎어놓는 단계(단계 2);
상기 프레임의 내측 공간에 상기 흙조성물을 충진하는 단계(단계 3); 및
상기 흙조성물을 양생하는 단계(단계 4);
를 포함하되,
상기 단계 1에서, 상기 흙조성물은 콩자갈 40~60중량%에 자연토 10~30중량% 및 고상 고화제 10~20중량%를 고르게 혼합하고, 액상 경화제 10~20중량%와 무기질 추출수 5~10중량%를 혼합하여 상기 자연토 및 고상 고화제가 혼합된 콩자갈에 투입하여 제조하며,
상기 고상 고화제는 칼슘 설포 알루미네이트(Calcium Sulfo Aluminate)를 분쇄하여 제조한 고화제이며,
상기 액상 경화제는 리튬 실리케이트 80~90중량%에 아크릴 에멀전계 폴리머 10~20중량%를 혼합하여 30~40분 교반한 변성 리튬 실리케이트이며,
상기 무기질 추출수는 황토 49~53중량%, 장석 12~16중량%, 탄산칼슘(CaCO3) 15~19중량%, 수산화칼슘(Ca(OH)2) 6~10중량%, 질산칼슘(Ca(NO3)2) 4~8중량% 및 산화칼슘(CaO) 2~6중량%를 혼합하여 분말화한 무기질 파우더 0.5~2중량%를 98~99.5중량%의 물과 2~4시간 혼합한 후, 23~25시간 침전시키고 저온 열성 과정을 통하여 생산한 추출수인 것을 특징으로 하는 이물질 유입 방지기능과 악취차단기능을 구비한 스틸 그레이팅의 제조방법.
Preparing a soil composition (step 1);
Laying up the frame on which the diaphragm is installed (step 2);
Filling the soil composition into an inner space of the frame (step 3); And
Curing the soil composition (step 4);
Including but not limited to:
In the step 1, the soil composition is evenly mixed with 10 to 30% by weight of natural soil and 10 to 20% by weight of solidified solidifying agent to 40 to 60% by weight of soybean gravel, 10 to 20% by weight of liquid curing agent and mineral extract water 5 It is prepared by mixing ~ 10% by weight into soybeans mixed with the natural soil and solidified solid,
The solid state solidifying agent is a solidifying agent prepared by grinding calcium sulfo aluminate,
The liquid curing agent is a modified lithium silicate, which is stirred for 30 to 40 minutes by mixing 10 to 20% by weight of an acrylic emulsion polymer with 80 to 90% by weight of lithium silicate,
The mineral extract is 49 to 53% by weight of ocher, 12 to 16% by weight of feldspar, 15 to 19% by weight of calcium carbonate (CaCO 3 ), 6 to 10% by weight of calcium hydroxide (Ca (OH) 2 ), calcium nitrate (Ca ( NO 3 ) 2 ) 0.5 to 2% by weight of inorganic powder powdered by mixing 4 to 8% by weight and 2 to 6% by weight of calcium oxide (CaO) after mixing with 98 to 99.5% by weight of water for 2 to 4 hours , 23-25 hours sedimentation and the production method of the steel grating with a foreign matter inflow prevention function and odor blocking function, characterized in that the extraction water produced through a low-temperature recessive process.
삭제delete 삭제delete
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200092003A (en) * 2019-01-24 2020-08-03 이종호 Remodeling construction method of Masato Stadium
KR102334555B1 (en) 2021-07-23 2021-12-06 주식회사 승진텍라인 Water permeable block type antibacterial grating for preventing inflow of trash and bed smell
KR102361823B1 (en) 2021-07-23 2022-02-15 주식회사 승진텍라인 Method for manufacturing ater permeable block type grating
KR102361828B1 (en) 2021-07-23 2022-02-15 주식회사 승진텍라인 Water permeable block type grating for preventing inflow of trash and bed smell
KR102451047B1 (en) 2021-08-31 2022-10-06 (주)자이언스틸 Permeable load balancing grating
KR20220144072A (en) 2021-04-19 2022-10-26 남위인 Protruding grating in which drainage height consecutively rises according to the water level rise
KR20220151374A (en) 2021-05-06 2022-11-15 주식회사 광주프리텍 Greating structure and its manufacturing method
KR102571749B1 (en) 2022-03-21 2023-08-29 주식회사 대명농업 Cigarette butts, fallen leaves, prevention of garbage inflow and odor blocking grating

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KR101225886B1 (en) 2010-07-16 2013-01-23 김동현 A steel grating composite with a bad-smell blocking function and garbage

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KR101225886B1 (en) 2010-07-16 2013-01-23 김동현 A steel grating composite with a bad-smell blocking function and garbage

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200092003A (en) * 2019-01-24 2020-08-03 이종호 Remodeling construction method of Masato Stadium
KR102187882B1 (en) * 2019-01-24 2020-12-07 이종호 Remodeling construction method of Masato Stadium
KR20220144072A (en) 2021-04-19 2022-10-26 남위인 Protruding grating in which drainage height consecutively rises according to the water level rise
KR20220151374A (en) 2021-05-06 2022-11-15 주식회사 광주프리텍 Greating structure and its manufacturing method
KR102334555B1 (en) 2021-07-23 2021-12-06 주식회사 승진텍라인 Water permeable block type antibacterial grating for preventing inflow of trash and bed smell
KR102361823B1 (en) 2021-07-23 2022-02-15 주식회사 승진텍라인 Method for manufacturing ater permeable block type grating
KR102361828B1 (en) 2021-07-23 2022-02-15 주식회사 승진텍라인 Water permeable block type grating for preventing inflow of trash and bed smell
KR102451047B1 (en) 2021-08-31 2022-10-06 (주)자이언스틸 Permeable load balancing grating
KR102571749B1 (en) 2022-03-21 2023-08-29 주식회사 대명농업 Cigarette butts, fallen leaves, prevention of garbage inflow and odor blocking grating

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