KR200360087Y1 - a shotcrete spray nozzle system of pumpcar with mortar concrete - Google Patents

a shotcrete spray nozzle system of pumpcar with mortar concrete Download PDF

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Publication number
KR200360087Y1
KR200360087Y1 KR20-2004-0004112U KR20040004112U KR200360087Y1 KR 200360087 Y1 KR200360087 Y1 KR 200360087Y1 KR 20040004112 U KR20040004112 U KR 20040004112U KR 200360087 Y1 KR200360087 Y1 KR 200360087Y1
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KR
South Korea
Prior art keywords
venturi
air
nozzle
ring
mortar
Prior art date
Application number
KR20-2004-0004112U
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Korean (ko)
Inventor
이기연
Original Assignee
신화엔지니어링(주)
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Priority to KR20-2004-0004112U priority Critical patent/KR200360087Y1/en
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Publication of KR200360087Y1 publication Critical patent/KR200360087Y1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/10—Spray pistols; Apparatus for discharge producing a swirling discharge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/005—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 mounted on vehicles or designed to apply a liquid on a very large surface, e.g. on the road, on the surface of large containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/0278—Arrangement or mounting of spray heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge

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  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)

Abstract

본 고안은 몰탈콘크리트펌프카쇼크리트분사노즐장치에 관한 것으로, 특히 터널등의 내벽이나 건물외벽등에 콘크리트몰탈을 분무 도포시키는 펌프카의 쇼크리트분사노즐장치에 관한 것으로, 일반 몰탈 콘크리트의 쇼크리트 분무노즐장치는 벤츄리 형태로만 구성되어 있고, 가는 골재등이 혼합된 관계로 물처럼 분무가 용이하지 않고 덩어리로 분사되는 경향이 있었다.때문에 분무 도포후 떨어지는 몰탈량을 리바운드율(rebound rate)이라 하는데, 통상의 경우에는 40∼50%에 이르고 있을 정도로 손실이 컸었다.벤츄리부(30)의 흡기공(30a)을 통하여 소용돌이와류성 공기가 유도흡입되게 하는 노즐바디부(20)의 노즐 내부로 강한 와류성 공기가 혼입되도록 하는 수단으로 에어밴드(20c)내로 관통배치된 에어흡입관(20a)의 구성배치가 에어밴드(20c)내 상하단 위치에서 상호 반시계방향으로 대향배치된 구성요소에 의하여, 벤츄리부(40)의 병목부를 통과하는 몰탈콘크리트가 배출될때 소용돌이식의 와류공기가 흡입됨으로써, 분무토출되는 순간에 밀도나 점도가 높은 몰탈콘크리트덩어리를 잘게 분쇄 분무시켜 종전에 비하여 쇼크리트(shotcrete) 피착율을 높일수 있도록 한 효과가 있는 유용한 고안인 것이다.The present invention relates to a mortar concrete pump car shot spray nozzle device, and more particularly to a spray spray nozzle device of a pump car for spraying concrete mortar on an inner wall of a tunnel or an outer wall of a building, etc. Since it is composed of only Venturi type and fine aggregates are mixed, it is not easy to spray like water, and it tends to be sprayed into agglomerates. Therefore, the mortar falling after spraying is called a rebound rate. In this case, the loss was large enough to reach 40 to 50%. A strong vortex property was introduced into the nozzle of the nozzle body 20 through which the vortex vortex air was guided and suctioned through the intake hole 30a of the venturi part 30. The arrangement of the air intake pipe 20a, which is arranged to penetrate into the air band 20c as a means for allowing air to be mixed, is positioned up and down in the air band 20c When the mortar concrete passing through the bottleneck part of the venturi part 40 is discharged by the components arranged in the counterclockwise direction to each other, the vortex vortex air is sucked in, so that the density or viscosity of the mortar concrete is high at the moment of spraying. It is a useful design that has an effect of increasing the shotcrete deposition rate by pulverizing and pulverizing the lump finely.

Description

몰탈콘크리트펌프카쇼크리트분사노즐장치{a shotcrete spray nozzle system of pumpcar with mortar concrete}Mortar concrete pump car shock spray nozzle device {a shotcrete spray nozzle system of pumpcar with mortar concrete}

본 고안은 몰탈콘크리트펌프카쇼크리트분사노즐장치에 관한 것으로, 특히 터널등의 내벽이나 건물외벽등에 콘크리트몰탈을 분무 도포시키는 펌프카의 쇼크리트분사노즐장치에 관한 것이다.The present invention relates to a mortar concrete pump car spray injection nozzle device, and more particularly, to a spray car spray nozzle device for a pump car for spraying concrete mortar onto an inner wall of a tunnel or an outer wall of a building.

일반적으로 사용되는 콘크리트분무노즐장치는 콘크리트압송장치로부터 흡입된 콘크리트몰탈을 분무시키는 노즐은 벤츄리 형태로만 구성되어 있고, 가는 골재등이 혼합된 관계로 물처럼 분무가 용이하지 않고 덩어리로 분사되는 경향이 있었다.The commonly used concrete spray nozzle device is a nozzle that sprays the concrete mortar sucked from the concrete conveying device is formed only in the venturi shape, and it is not easy to spray like water because it is a mixture of fine aggregates. there was.

때문에 분무 도포후 떨어지는 몰탈량을 리바운드율(rebound rate)이라 하는데, 통상의 경우에는 40∼50%에 이르고 있을 정도로 손실이 컸었다.Therefore, the amount of mortar falling after spray coating is called a rebound rate. In the usual case, the loss was large enough to reach 40 to 50%.

이에 본 고안에서는 콘크리트몰탈과 같이 점도와 밀도가 높은 쇼크리트 (shotcrete)타설물을 효과적으로 분무 도포시키는 분사노즐장치로써, 노즐 내부로 강한 와류성 공기가 혼입되도록 하는 수단을 제공하여, 분무토출되는 순간에 밀도나 점도가 높은 몰탈콘크리트인 쇼크리트 덩어리를 잘게 분쇄 분무시켜 피착율을 높이는데 유용히 사용되도록 하고자 한다.Therefore, the present invention is a spray nozzle device for spray application of shotcrete pours with high viscosity and density like concrete mortar, and provides a means for incorporating strong vortex air into the nozzle. It is intended to be useful for increasing the deposition rate by finely pulverizing and spraying a small amount of shock concrete, mortar concrete having high density and viscosity.

도 1은 본 고안의 외관 사시도1 is an external perspective view of the present invention

도 2는 도 1의 종 단면도2 is a longitudinal cross-sectional view of FIG.

도 3은 본 고안의 주요부 분해사시도3 is an exploded perspective view of the main part of the present invention

도 4는 본 고안의 주요부 분리 종단면도Figure 4 is a longitudinal cross-sectional view of the main part of the present invention

※도면의 주요 부분에 대한 부호의 설명※ Explanation of code for main part of drawing

10:노즐헤드부 20:노즐바디부10: Nozzle head part 20: Nozzle body part

30:벤츄리부 40:분사파이프30: Venturi part 40: Injection pipe

50:간격링50: interval ring

10a:나사조립탭홀 10b:고정볼트10a: Tapped hole for screw assembly 10b: Fixing bolt

10c:브라켓 10d:단턱부10c: Bracket 10d: Stepped part

10e:벤츄리부조립탭10e: Venturi part assembly tap

20a;20b:에어흡입관 20c:에어밴드(air bend)20a; 20b: air suction pipe 20c: air bend

20d:오링홈 20e:오링홈20d: O-ring groove 20e: O-ring groove

30a:흡기공 30b:벤츄리부오링홈30a: Intake hole 30b: Venturi ring ring groove

30c:흡기에어밴드 30d:벤츄리부브라켓30c: Intake air band 30d: Venturi bracket

30e:벤츄리부조립나사부30e: Venturi mounting screw thread

상기와 같은 점을 감안하여 이하 첨부된 도면에 의하여, 본 고안의 일실시 구성 및 작용을 알아보면 다음과 같다.In view of the above-mentioned point, by referring to the accompanying drawings, one embodiment configuration and operation of the present invention is as follows.

도 1은 본 고안의 외관 사시도,도 2는 도 1의 종 단면도,도 3은 본 고안의 주요부 분해사시도,도 4는 본 고안의 주요부 분리 종단면도로써, 병목형 외경부 양단에 브라켓(10c)을 돌출시키며, 상단병목부 내부 일정깊이에 단턱부(10d)를 형성하여 분사파이프(40)를 끼워 상기 병목부 외경 3곳에 형성한 나사조립탭홀(10a)에 고정볼트(10b)로 분사파이프(40)를 고정시키고, 하부 내경부에는 벤츄리부조립탭 (10e)을 가공한 노즐헤드부(10)와, 상기 노즐헤드부(10) 하부 외경크기의 원통체 상단과 하단부에 단턱가공시켜 중앙내륜부에 에어밴드(air bend;20c)공간을 형성시키고, 상기 원통체 하단 단턱 내경부에는 노즐바디부오링홈(20d)을 가공하되, 상기 에어밴드(20c)상층부와 하층부에 각 반시계방향으로 대향배치된체 일체로 관통된 에어흡입관(20a;20b)이 형성된 노즐바디부(20)와, 상부외주연부에 벤츄리부조립나사부(30e)를 하부 외주연에 벤츄리부오링홈(30b)과 그 하단테에 벤츄리부브라켓 (30d)을 형성하되, 상부 외주연 하단부와 하부 외주연 상단부간의 단턱공간으로 흡기에어밴드(30c)을 마련하되, 상기 흡기에어밴드(30c)의 상단모서리부에서 상부 외주연 내경부로 경사지게 관통시킨 수개의 흡기공(30a)을 형성하여된 벤츄리부(30)를 상호 조립함에 있어서,상기 노즐바디부(20)와 노즐헤드부(10)사이에는 간격링 (5)이,노즐바디부오링홈(20d)과 벤츄리부오링홈(30b)사이에는 오링(20e)을 끼우고 노즐헤드부(10)의 저부 벤츄리부조립탭(10e)으로 벤츄리부(30)의 벤츄리부조립나사부(30e)가 조립되도록 벤츄리부(30)를 노즐바디부(20)내로 관통조립해 노즐헤드부(10)의 브라켓(10c)으로 감아돌려 나사조립되게 한것이다.Figure 1 is an external perspective view of the present invention, Figure 2 is a longitudinal cross-sectional view of Figure 1, Figure 3 is an exploded perspective view of the main part of the present invention, Figure 4 is a longitudinal cross-sectional view of the main part of the present invention, the bracket 10c at both ends of the bottle neck outer diameter portion Protruding to form a stepped portion (10d) in a predetermined depth inside the upper bottleneck part by inserting the injection pipe (40) in the screw assembly tab hole (10a) formed in the outer diameter of the three bottlenecks with a fixed bolt (10b) 40) is fixed, and the inner inner ring by stepping the nozzle head portion 10, the venturi portion assembly tab (10e) in the lower inner diameter portion, and the upper end and the lower end of the cylindrical body of the outer diameter size of the lower nozzle head portion (10) An air bend (20c) space is formed in the part, and the nozzle body part ring ring groove (20d) is processed in the inner diameter of the lower end of the cylindrical body, each counterclockwise in the upper and lower parts of the air band (20c). Nozzle body portion formed with the air suction pipe (20a; 20b) integrally disposed facing the body 20, and the venturi part assembly screw part 30e on the upper outer periphery of the venturi ring ring groove 30b on the lower outer periphery and the venturi part bracket 30d on the lower edge of the upper outer periphery, The venturi part is provided with an intake air band 30c as a stepped space between the upper end portions of the periphery, and forms a plurality of intake holes 30a inclined from the upper edge portion of the intake air band 30c to the upper outer peripheral inner diameter portion. In assembling 30, a gap ring 5 is provided between the nozzle body 20 and the nozzle head 10, and between the nozzle body ring groove 20d and the venturi ring ring 30b. The venturi part 30 is inserted into the nozzle body part 20 so that the venturi part assembly screw part 30e of the venturi part 30 is assembled with the O-ring 20e and the bottom venturi part assembly tab 10e of the nozzle head part 10e. ) To assemble through the bracket (10c) of the nozzle head portion 10 to be assembled into a screw.

이와 같이 구성된 본 고안의 일실시 작용으로는 도 2에 도시된 본 고안의 종단면도와 같이, 별도의 펌핑장치수단(도시되지 않았음)으로 유입되는 몰탈콘크리트가 벤츄리부(30)의 내경부에 이르면, 노즐바디부(20)의 외경부에 상호 대향된체, 단차가 형성된 에어흡입관(20a;20b)을 통하여 에어밴드(20c)내로 유입되는 공기는 소용돌이가 발생된체 벤츄리부(30)의 각 흡기공(30a)을 통하여 몰탈콘크리트내부로 공기가 고루 공급되면서 몰탈콘크리트를 더욱 믹싱하여 덩어리 입자를 잘게 분쇄하도록 함과 동시에 병목형의 노즐헤드부(10)을 통해 더욱 가압된체 분사파이프(40)을 통해 외부로 배출되는 순간 팽창되면서 몰탈콘크리트가 고르게 분무배출되어 피착물에 리바운드율이 20%대로 감소될 수 있었다.As one embodiment of the present invention configured as described above, as shown in the longitudinal section of the present invention shown in Figure 2, when the mortar concrete introduced into a separate pumping device means (not shown) reaches the inner diameter of the venturi portion 30 The air flowing into the air band 20c through the air suction pipes 20a and 20b, which face each other and face each other to the outer diameter portion of the nozzle body 20, has a vortex generated in each of the venturi parts 30. Air is supplied evenly into the mortar concrete through the intake hole 30a to further mix the mortar concrete to finely pulverize the agglomerate particles, and at the same time, pressurized body injection pipe 40 through the bottle head nozzle head 10. As it is expanded to the outside during the expansion, the mortar concrete can be evenly sprayed to reduce the rebound rate to 20%.

상기에서 노즐헤드부(10)의 병목부 외경부에 형성된 브라켓(10c)은 노즐헤드부(10)의 저부에 형성된 벤츄리부조립탭(10e)에 나사조립되는 벤츄리부(30)의 벤츄리부조립나사부(30e)와의 나사조립이 용이하도록 하는 수단이다.The bracket 10c formed in the outer diameter portion of the bottle head portion 10 of the nozzle head portion 10 is the venturi portion assembly of the venturi portion 30 screwed to the venturi portion assembly tab 10e formed at the bottom of the nozzle head portion 10. Means for facilitating screw assembly with the screw portion (30e).

한편, 상기 간격링(50)은 노즐헤드부(10)에 나사 조립시키는 벤츄리부(30)사이에 조립되는 노즐바디부(20)가 단단히 고정되도록 하는 버팀역활을 제공하도록 하기 위함이다.On the other hand, the spacing ring 50 is to provide a brace role to be firmly fixed to the nozzle body portion 20 is assembled between the venturi portion 30 screwed to the nozzle head portion 10.

상기와 같이 구성된 본 고안의 일실시 작용효과로는 펌프카를 이용해 터널내벽이나 건축물외벽체를 쇼크리트(shotcrete) 콘크리트몰탈과 같이 점도와 밀도가 높은 타설물을 피착하는데 있어서, 리바운드율을 감소시키는 분사노즐장치로써, 벤츄리부(30)의 흡기공(30a)을 통하여 소용돌이와류성 공기가 유도흡입되게 하는 노즐바디부(20)의 노즐 내부로 강한 와류성 공기가 혼입되도록 하는 수단으로 에어밴드(20c)내로 관통배치된 에어흡입관(20a)의 구성배치가 에어밴드(20c)내 상하단 위치에서 상호 반시계방향으로 대향배치된 구성요소에 의하여, 벤츄리부(40)의 병목부를 통과하는 몰탈콘크리트가 배출될때 소용돌이식의 와류공기가 흡입됨으로써, 분무토출되는 순간에 밀도나 점도가 높은 몰탈콘크리트덩어리를 잘게 분쇄 분무시켜 종전에 비하여 쇼크리트(shotcrete) 피착율을 높일수 있도록 한 효과가 있었다.One embodiment effect of the present invention configured as described above is a spray nozzle for reducing the rebound rate in depositing high-density pours, such as shotcrete concrete mortar on the tunnel inner wall or building exterior wall using a pump car As an apparatus, the air band 20c is a means for allowing strong vortex air to be mixed into the nozzle of the nozzle body 20 through which the vortex vortex air is guided and suctioned through the intake hole 30a of the venturi portion 30. When the constituent arrangement of the air suction pipe 20a penetrated into the discharged mortar concrete passing through the bottleneck portion of the venturi part 40 is disposed by the components arranged in counterclockwise directions at the upper and lower positions in the air band 20c. Vortex-type vortex air is sucked in, and the mortar concrete mass having high density and viscosity is finely pulverized and sprayed at the moment of spraying out, and it is more shock-free than before. (Shotcrete) was effective to make a turn, benefits deposition rate.

Claims (1)

병목형 외경부 양단에 브라켓(10c)을 돌출시키며, 상단병목부 내부 일정깊이에 단턱부(10d)를 형성하여 분사파이프(40)를 끼워 상기 병목부 외경 3곳에 형성한 나사조립탭홀(10a)에 고정볼트(10b)로 분사파이프(40)를 고정시키고, 하부 내경부에는 벤츄리부조립탭 (10e)을 가공한 노즐헤드부(10)와, 상기 노즐헤드부(10) 하부 외경크기의 원통체 상단과 하단부에 단턱가공시켜 중앙내륜부에 에어밴드(air bend;20c)공간을 형성시키고, 상기 원통체 하단 단턱 내경부에는 노즐바디부 오링홈(20d)을 가공하되, 상기 에어밴드(20c)상층부와 하층부에 각 반시계방향으로 대향배치된체 일체로 관통된 에어흡입관(20a;20b)이 형성된 노즐바디부(20)와, 상부외주연부에 벤츄리부조립나사부(30e)를 하부 외주연에 벤츄리부오링홈(30b)과 그 하단테에 벤츄리부브라켓 (30d)을 형성하되, 상부 외주연 하단부와 하부 외주연 상단부간의 단턱공간으로 흡기에어밴드(30c)을 마련하되, 상기 흡기에어밴드(30c)의 상단모서리부에서 상부 외주연 내경부로 경사지게 관통시킨 수개의 흡기공(30a)을 형성하여된 벤츄리부(30)를 상호 조립함에 있어서,상기 노즐바디부(20)와 노즐헤드부(10)사이에는 간격링(50)이,노즐바디부오링홈(20d)과 벤츄리부오링홈(30b)사이에는 오링(20e)을 끼우고 노즐헤드부(10)의 저부 벤츄리부조립탭(10e)으로 벤츄리부 (30)의 벤츄리부조립나사부(30e)가 조립되도록 벤츄리부(30)를 노즐바디부(20)내로 관통조립해 노즐헤드부(10)의 브라켓(10c)으로 감아돌려 나사조립됨을 특징으로 하는 몰탈콘크리트펌프카쇼크리트분사노즐장치.The bracket 10c is projected on both ends of the bottleneck outer diameter, and the stepped portion 10d is formed at a predetermined depth inside the upper bottleneck, and the injection pipe 40 is inserted into the screw assembly tab hole 10a formed at the three outer diameters of the bottleneck. The injection pipe 40 is fixed to the fixing bolt 10b, and the lower inner diameter portion has a nozzle head portion 10 having a venturi portion assembly tab 10e processed thereon, and a cylinder having an outer diameter size lower than the nozzle head portion 10. Stepped to the upper and lower end of the sieve to form an air bend (20c) space in the central inner ring portion, and processing the nozzle body O-ring groove 20d in the cylindrical lower end stepped inner diameter portion, the air band (20c) The nozzle body part 20 formed with the air suction pipes 20a and 20b integrally disposed in the counter-clockwise direction and integrally arranged counterclockwise on the upper part and the lower part, and the venturi part assembly screw part 30e at the upper outer periphery of the lower outer periphery. In the venturi buoring groove (30b) and the bottom frame to form a venturi bubu (30d), Intake air band 30c is provided as a stepped space between the lower portion of the outer periphery and the upper portion of the lower outer periphery, and several intake holes 30a are inclinedly penetrated from the upper edge portion of the intake air band 30c to the upper outer periphery inner diameter. In forming the venturi portion 30 formed by mutually, the gap ring 50 between the nozzle body portion 20 and the nozzle head portion 10, the nozzle body portion ring (20d) and the venturi portion The O-ring 20e is inserted between the O-ring grooves 30b, and the venturi part assembly screw part 30e of the venturi part 30 is assembled by the bottom venturi part assembly tab 10e of the nozzle head part 10e. ) Is assembled through the nozzle body portion 20 to the bracket (10c) of the nozzle head portion 10 is wound and assembled screw mortar concrete pump car shot spray nozzle device.
KR20-2004-0004112U 2004-02-18 2004-02-18 a shotcrete spray nozzle system of pumpcar with mortar concrete KR200360087Y1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100562914B1 (en) * 2005-11-14 2006-03-22 조용찬 A spray-nozzle capable of adjusting the spraying -direction
KR100647531B1 (en) 2004-12-24 2006-11-23 삼성물산 주식회사 Injection Device System by the use of Cement Mineral Based Set Accelerator
KR102550035B1 (en) 2022-09-01 2023-06-30 주식회사 실크로드티앤디 Variable nozzle mounted on spray gun
KR20230154561A (en) 2022-05-02 2023-11-09 조병구 Concrete placing injection device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100647531B1 (en) 2004-12-24 2006-11-23 삼성물산 주식회사 Injection Device System by the use of Cement Mineral Based Set Accelerator
KR100562914B1 (en) * 2005-11-14 2006-03-22 조용찬 A spray-nozzle capable of adjusting the spraying -direction
KR20230154561A (en) 2022-05-02 2023-11-09 조병구 Concrete placing injection device
KR102550035B1 (en) 2022-09-01 2023-06-30 주식회사 실크로드티앤디 Variable nozzle mounted on spray gun

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