KR20120008849A - Internal coating device for steel pipe - Google Patents

Internal coating device for steel pipe Download PDF

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Publication number
KR20120008849A
KR20120008849A KR1020100070098A KR20100070098A KR20120008849A KR 20120008849 A KR20120008849 A KR 20120008849A KR 1020100070098 A KR1020100070098 A KR 1020100070098A KR 20100070098 A KR20100070098 A KR 20100070098A KR 20120008849 A KR20120008849 A KR 20120008849A
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KR
South Korea
Prior art keywords
coating
steel pipe
paint
atomized
polyurethane
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KR1020100070098A
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Korean (ko)
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KR101139284B1 (en
Inventor
최영섭
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한국종합철관 (주)
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Priority to KR1020100070098A priority Critical patent/KR101139284B1/en
Publication of KR20120008849A publication Critical patent/KR20120008849A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00Machines 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
    • B05B13/06Machines 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 specially designed for treating the inside of hollow bodies
    • B05B13/0627Arrangements of nozzles or spray heads specially adapted for treating the inside of hollow bodies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/005Nozzles or other outlets specially adapted for discharging one or more gases
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00Machines 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
    • B05B13/02Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/0207Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the work being an elongated body, e.g. wire or pipe
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00Machines 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
    • B05B13/02Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/0221Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts
    • B05B13/0228Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts the movement of the objects being rotative
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00Machines 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
    • B05B13/02Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/04Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00Machines 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
    • B05B13/06Machines 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 specially designed for treating the inside of hollow bodies
    • B05B13/0609Machines 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 specially designed for treating the inside of hollow bodies the hollow bodies being automatically fed to, or removed from, the machine
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00Machines 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
    • B05B13/06Machines 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 specially designed for treating the inside of hollow bodies
    • B05B13/0618Machines 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 specially designed for treating the inside of hollow bodies only a part of the inside of the hollow bodies being treated
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00Arrangements for collecting, re-using or eliminating excess spraying material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/60Arrangements for mounting, supporting or holding spraying apparatus
    • B05B15/68Arrangements for adjusting the position of spray heads
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/08Apparatus to be carried on or by a person, e.g. of knapsack type
    • B05B9/0805Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04Polyurethanes

Abstract

PURPOSE: A device for internal coating for steel pipe is provided to prevent the adhesion of paint during the spraying process of polyurethane resin paint, thereby improving the quality of a film remarkably. CONSTITUTION: A device for internal coating for steel pipe comprises a coating injection nozzle(230) for the painting of polyurethane, and an atomized particle collecting member(300). The coating injection nozzle is included in the edge of a coating gun. The coating device is installed in a elevating unit part for elevating to motor in order to control height. The elevating unit part comprises a moving means. The moving means moves along a moving cart. The atomized particle collecting member collects paint, which is atomized during the spraying process of the coating injection nozzle, and separates the same.

Description

강관 내면의 도장장치 {Internal coating device for steel pipe}Internal coating device for steel pipe

본 발명은 강관 내면의 도장장치에 관한 것으로, 더욱 구체적으로는 강관 내면에 폴리우레탄 수지 도료를 도장하기 위한 도장장치에 도료의 분사과정에서 무화된 도료를 포집하여 별도 분리 처리할 수 있도록 하여 폴리우레탄 수지 도료의 건조된 도막 부위에 분사과정에서 무화된 도료가 부착되지 않도록 한 강관 내면의 도장장치에 관한 것이다.
The present invention relates to a coating device for the inner surface of the steel pipe, and more specifically to the polyurethane coating material for painting the polyurethane resin paint on the inner surface of the steel pipe to collect the atomized paint during the spraying process of the paint to separate the treatment by polyurethane The present invention relates to a painting apparatus on the inner surface of a steel pipe to prevent the atomized paint from adhering to the dried coating film portion of the resin paint during the spraying process.

일반적으로 강관 내면은 대기중의 수분이나 강관 표면 중의 수분에 비교적 민감하지 않은 액상 에폭시를 방식 목적으로 도장하고 있는 실정이다.
In general, the inner surface of the steel pipe is a liquid epoxy which is relatively insensitive to moisture in the atmosphere or water in the surface of the steel pipe is a situation that is coated for the purpose of corrosion protection.

이러한 강관 내면에 대한 종래의 기술내용으로는 특허 제10-0859321호 및 특허 제10-0770767호가 개시되어 강관의 내면을 이액형 폴리우레탄 도료 또는 이와 유사한 이액형 폴리우레아 도료를 사용하여 도장할 수 있도록 하고 있으나 강관의 외면을 적어도 250℃ 이상 고온으로 가열한 상태에서 강관 외면을 분말 용착식으로 피복하고 이어서 강관의 내면을 상온에서 폴리우레탄 도장할 수 없는 단점이 있었다.
Conventional technical information on the inner surface of such a steel pipe is disclosed in Patent No. 10-0859321 and Patent No. 10-0770767 to paint the inner surface of the steel pipe using a two-component polyurethane paint or similar two-component polyurea paint. However, the outer surface of the steel pipe was heated to a high temperature of at least 250 ° C. or more, and the outer surface of the steel pipe was coated by powder welding, and then the inner surface of the steel pipe could not be polyurethane coated at room temperature.

특히 폴리우레탄 도료는 종래에 사용하던 에폭시 도료에 비해 수분에 훨씬 민감하므로 더욱 도장이 어려워지고, 폴리우레탄 도료는 도료분사 장치를 통해 분사한 직후부터 매우 빠르게 경화반응을 통해 건조가 진행되므로 강관 내면에 고압 분사된 도료가 일부 무화(霧化)된 상태로 남아서 건조가 진행된 도막 위에 부착되어 미소한 돌기부를 형성하므로 도막의 표면이 매끈하게 되는 것을 방해하여, 결과적으로 제품의 외관을 저해하여 상품 가치를 떨어뜨릴 뿐 아니라 강관을 시공한 후 사용시 수돗물과 같은 유체가 장기간에 걸쳐 통과할 때 돌기부가 떨어지면 수돗물에 혼입되는 등의 문제점이 있다.
In particular, polyurethane paints are more sensitive to moisture than conventional epoxy paints, making them more difficult to paint. Polyurethane paints are rapidly dried through a curing reaction immediately after spraying through a paint spraying device. The high pressure sprayed paint remains partially atomized and adheres to the dried coating to form a fine projection, which prevents the surface of the coating from smoothing, which in turn hinders the appearance of the product and increases the value of the product. In addition to dropping, there is a problem such that when the protrusion such as tap water passes over a long period of time when the steel pipe is used after construction, the protrusion falls into the tap water.

본 발명은 이러한 문제점을 해결하기 위하여 안출한 것으로, 관의 내면을 액체 상태의 폴리우레탄 수지 도료를 도장할 수 있도록 하되 강관 내면에 폴리우레탄 수지 도료를 도장하기 위한 도장장치에 도료의 분사과정에서 무화된 도료를 포집하여 별도 분리 처리할 수 있도록 한 포집처리수단을 구비하여 폴리우레탄 수지 도료의 건조된 도막 부위에 분사과정에서 무화된 도료가 부착되지 않도록 하여 도막의 품질이 크게 향상되도록 한 강관 내면의 도장장치에 관한 것이다.
The present invention has been made in order to solve this problem, the inner surface of the pipe to be able to paint the polyurethane resin paint in the liquid state, but the atomization during the spraying of the paint to the coating device for painting the polyurethane resin paint on the inner surface of the steel pipe It is equipped with a collecting treatment means for collecting and separately separating the painted paints, so that the coating material is not attached to the dried coating film of the polyurethane resin paint during spraying so that the quality of the coating film is greatly improved. It relates to a painting device.

본 발명은 강관의 내면을 폴리우레탄 도장하기 위한 도장장치에 있어서, 상기 도장장치의 도장건 선단에 구비되어 폴리우레탄 도장이 이루어지도록 하는 도장분사노즐과, 상기 도장분사노즐의 분사과정에서 무화되는 도료를 포집하여 분리처리하기 위한 무화포집부재가 설치된 구성과,The present invention is a coating device for polyurethane coating the inner surface of the steel pipe, the coating spray nozzle which is provided at the tip of the coating gun of the coating device to make a polyurethane coating, and the coating material in the spraying process of the coating spray nozzle And an atomization collecting member for collecting and separating the sewage,

상기 도장장치는 모터로 승강되게 한 승강장치부에 설치되어 높이가 조절되게 하며, 상기 승강장치부는 이동대차를 따라 이동되게 한 이동수단과, 강관은 회전로울에 올려져서 강관이 회전되면서 도장이 이루어지는 구성과,The painting device is installed in the lifting device to be lifted by the motor to adjust the height, the lifting device portion is moved to move along the moving trolley, the steel pipe is mounted on the rotary roller is made of the steel pipe is rotated and the painting is made and,

상기 무화포집부재는, 도장건의 일측에 도장에 지장을 주지않고 무화된 도료를 포집할 수 있는 진공흡입노즐이 구비되고 그 진공흡입노즐은 진공흡입관과 연결되어 진공펌프에 의해 흡입작용이 이루어질 수 있도록 한 강관 내면의 도장장치를 특징으로 한다.
The atomization collecting member is provided with a vacuum suction nozzle capable of collecting the atomized paint on one side of the coating gun without disrupting the coating, and the vacuum suction nozzle is connected to the vacuum suction tube so that the suction action can be performed by the vacuum pump. It features a painting device on the inner surface of a steel pipe.

본 발명에 따른 강관 내면의 도장장치는 강관 내면에 폴리우레탄 수지 도료를 도장하기 위한 도장장치에 도료의 분사과정에서 무화된 도료를 포집하여 별도 분리 처리할 수 있도록 하여 폴리우레탄 수지 도료의 건조된 도막 부위에 분사과정에서 무화된 도료가 부착되지 않도록 하므로 도막의 품질의 크게 향상시킬 수 있고 강관의 내구성도 높일 수 있는 효과가 있다.
The coating device of the inner surface of the steel pipe according to the present invention is a coating device for painting a polyurethane resin paint on the inner surface of the steel pipe to collect the atomized paint in the spraying process of the paint to be separated and treated separately dried coating film of the polyurethane resin paint Since the atomized paint is not attached to the site during the spraying process, the quality of the coating film can be greatly improved and the durability of the steel pipe can be improved.

도 1은 본 발명에 따른 도장장치의 전체적인 구성을 나타낸 전면도.
도 2는 본 발명에 따른 도장장치에서 무화포집부재 부분을 나타낸 확대도.
도 3은 본 발명에 따른 도장장치에서 무화포집부재 부분의 측면 예시도.
도 4는 본 발명에 따른 도장장치에서 무화포집부재의 또 다른 구성을 나타낸 전면도.
도 5는 도 4의 도장장치에서 무화포집부재 부분을 나타낸 확대도.
1 is a front view showing the overall configuration of the coating apparatus according to the present invention.
Figure 2 is an enlarged view showing a portion of the atomization collecting member in the coating device according to the present invention.
Figure 3 is an illustration of the side of the atomizing collecting member portion in the coating device according to the present invention.
Figure 4 is a front view showing another configuration of the atomization collecting member in the coating device according to the present invention.
Figure 5 is an enlarged view showing a portion of the atomization collecting member in the coating device of FIG.

이하 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 상세히 설명하면 다음과 같다. 그리고 본 발명을 설명함에 있어서, 관련된 공지기능 혹은 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우 그 상세한 설명을 생략한다.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

본 발명에 따른 강관의 내면을 폴리우레탄 도장하기 위한 도장장치에 있어서, 상기 도장장치(200)의 도장건(220) 선단에 구비되어 폴리우레탄 도장이 이루어지도록 하는 도장분사노즐(230)과, 상기 도장분사노즐(230)의 분사과정에서 무화되는 도료를 포집하여 분리처리하기 위한 무화포집부재(300)가 설치된 것을 특징으로 한다.
In the coating device for polyurethane coating the inner surface of the steel pipe according to the present invention, the coating spray nozzle 230 is provided at the tip of the coating gun 220 of the coating device 200 to make a polyurethane coating, and It is characterized in that the atomization collecting member 300 for collecting and separating the paint to be atomized in the spraying process of the coating spray nozzle 230 is installed.

상기 도장장치(200)는 모터(212)로 승강되게 한 승강장치부(210)에 설치되어 높이가 조절되게 하며, 상기 승강장치부(210)는 이동대차(214)를 따라 이동되게 한 이동수단과, 강관(100)은 회전로울(110)에 올려져서 강관(100)이 회전되면서 도장이 이루어지는 구성으로 되어 있다.
The painting device 200 is installed on the elevating device portion 210 to be elevated by the motor 212 to adjust the height, the elevating device 210 is moved means to move along the moving cart 214, Steel pipe 100 is placed on the rotary roll 110 is made of a configuration that the coating is made while the steel pipe 100 is rotated.

상기 무화포집부재(300)는, 도장건(220)의 일측에 도장에 지장을 주지않고 무화된 도료를 포집할 수 있는 진공흡입노즐(310)이 구비되고 그 진공흡입노즐(310)은 진공흡입관(312)과 연결되어 진공펌프(314)에 의해 흡입작용이 이루어질 수 있도록 한다.
The atomization collecting member 300 is provided on one side of the coating gun 220 is provided with a vacuum suction nozzle 310 that can collect the atomized paint without disrupting the coating and the vacuum suction nozzle 310 is a vacuum suction pipe It is connected to the 312 so that the suction action can be made by the vacuum pump (314).

상기 진공흡입노즐(310)은 도료포집이 용이하도록 나팔 형상으로 구비되고 적어도 3개 이상 구비되어 강관 내면의 상하 및 측부에 있는 무화된 도료의 포집이 용이하도록 한다.
The vacuum suction nozzle 310 is provided in the shape of a trumpet to facilitate paint collection and provided with at least three or more to facilitate the collection of the atomized paint in the upper and lower and side portions of the inner surface of the steel pipe.

또한, 도 4 및 도 5는 본 발명에 따른 무화포집부재(300)의 또 다른 구성실시예로서, 도장건(220) 일측에 수평으로 공기를 불어주는 공기분사노즐(320)을 구비하여 에어콤프레셔(322)와 연결하고 상기 공기분사노즐(320)의 공기분사방향에 위치한 강관(100) 끝단부에 강관의 외경 전체를 감싸는 형태로 포집후드(324)가 구비되고 그 포집후드(324)는 진공흡입펌프(326)와 집진기(328)가 무화된 도료가 포집될 수 있도록 한 공기분사 및 흡입식으로 이루어져 있다.
In addition, Figure 4 and Figure 5 is another configuration embodiment of the atomizing collecting member 300 according to the present invention, the air compressor having an air spray nozzle 320 for blowing air horizontally on one side of the coating gun 220 A collecting hood 324 is provided in the form of surrounding the entire outer diameter of the steel pipe at the end of the steel pipe 100 connected to the 322 and located in the air spraying direction of the air spray nozzle 320, and the collecting hood 324 is vacuumed. The suction pump 326 and the dust collector 328 are composed of an air spray and a suction type to allow the atomized paint to be collected.

이와 같이 된 본 발명의 강관 내면의 도장장치에 따른 실시예를 첨부된 도면에 의하여 상세히 설명하면 다음과 같다.
When described in detail by the accompanying drawings an embodiment according to the coating device of the inner surface of the steel pipe of the present invention as follows.

본 발명은 강관(100)이 회전로울(110)에 올려져서 회전되게 한 다음 이러한 강관(100)의 내면을 도장장치(200)의 도장건(220) 선단에 구비된 도장분사노즐(230)에 의해 도장이 이루어지게 되고 도료의 분사과정에서 무화된 도료는 무화포집부재(300)에 의해 별도로 분리 처리할 수 있도록 함으로서 폴리우레탄 수지 도료의 건조된 도막 부위에 분사과정에서 무화되는 도료가 강관(100)에 부착되지 않도록 한다.
According to the present invention, the steel pipe 100 is placed on the rotary roller 110 to be rotated, and then the inner surface of the steel pipe 100 is applied to the coating spray nozzle 230 provided at the tip of the coating gun 220 of the coating device 200. The painting is made by the coating and the atomized paint in the spraying process of the paint can be separately processed by the atomization collecting member 300, the paint atomized in the spraying process to the dried coating area of the polyurethane resin paint steel pipe (100) Do not attach to the

즉, 도장할 준비가 된 강관(100)을 내면 폴리우레탄 도장장치(200)의 강관 회전로울(110) 위에 올려놓은 다음 폴리에틸렌 분사장치가 장착된 내면 도장장치(200)의 도장건(220)의 선단부 도장분사노즐(230)부분을 강관 내면을 관통하여 반대쪽 관 끝까지 이동시킨 후 강관을 서서히 회전시켜서 소정의 회전 속도(강관의 직경에 따라 조절하며 보통 원주 속도 기준으로 1~3 m/s 정도 범위임)에 도달하면 도장분사노즐(230)을 통하여 폴리우레탄 도료의 분사를 개시한다.
That is, the inner surface of the steel pipe 100 ready to be painted on the steel pipe rotary roll 110 of the polyurethane coating device 200 and then the coating gun 220 of the inner surface coating device 200 equipped with a polyethylene injection device The tip spray injection nozzle 230 is moved through the inner surface of the steel pipe to the opposite end of the pipe, and then the steel pipe is slowly rotated to adjust the predetermined rotational speed (adjusted according to the diameter of the steel pipe, usually in the range of 1 to 3 m / s based on the circumferential speed). Im), the spraying of the polyurethane paint is started through the painting spray nozzle 230.

이때 폴리우레탄 도료의 분사 압력은 2,000~2,500psi 정도가 적당하며, 분사 노즐의 팁과 강관 표면 사이의 거리는 300~500mm 정도가 적합함. 도료의 분사량은 노즐 팁의 구멍 크기(오리피스 사이즈)에 비례하므로 강관의 크기(직경)에 따라 사전에 설정된 노즐 팁을 사용하여야 한다.
At this time, the injection pressure of polyurethane paint is suitable about 2,000 ~ 2,500psi, and the distance between tip of injection nozzle and the surface of steel pipe is suitable about 300 ~ 500mm. Since the spray amount of paint is proportional to the hole size (orifice size) of the nozzle tip, the nozzle tip set in advance according to the size (diameter) of the steel pipe should be used.

상기 강관 내면 폴리우레탄 도막의 두께(건조도막두께 : DFT-Dry Film Thickness)는 경제성과 품질 성능 등을 감안하여 규정한 국가나 단체의 규격에 따르거나 제품 주문자의 요구에 의거하여 작업을 하는데 예를 들어 미국수도협회의 경우 최대치에 대한 제한 없이 최소치만 0.5mm 로 규정하고 있으며 보통은 0.5mm ~ 1.0mm 정도로 생산하는 것이 대부분이다.
The thickness of the inner surface of the steel polyurethane coating film (dry film thickness: DFT-Dry Film Thickness) is in accordance with the standards of the country or organization prescribed in consideration of economic performance and quality performance, or in accordance with the requirements of the product orderer. For example, the American Capital Association defines 0.5mm as the minimum value without limiting the maximum value, and it is usually produced about 0.5mm to 1.0mm.

그리고 폴리우레탄은 강관 내면에 도장할 때 한쪽 끝으로부터 다른 쪽 끝까지 1회만 관통하며 분사하여도 상기한 도막 두께(0.5 ~ 1.0mm)로 생산할 수 있으며(single pass, single layer), 미세한 미도장 부분이라도 발생하는 것을 예방하기 위해 얇은 두께로 1회 관통 도장 직후 추가로 1~2회를 더 관통 도장하는 방법(multi-pass, single layer)을 적용함이 바람직하다.
Polyurethane can be produced with the above coating thickness (0.5 ~ 1.0mm) even when sprayed and sprayed only once from one end to the other when painting on the inner surface of the steel pipe (single pass, single layer), even for fine unpainted parts. In order to prevent it from occurring, it is preferable to apply a method (multi-pass, single layer) of one or two additional penetrating coatings immediately after a single penetrating coating with a thin thickness.

상기와 같이 도료의 분사를 시작하면 동시에 내면 도장장치(200)의 도장건(220)을 후진시키는데, 후진 속도는 강관 직경과 길이에 따라 사전에 설정한 바에 따라 조절하며 보통은 1.5~3 m/min 정도가 적당하며, 이때 강관 1 개의 길이는 보통 6m, 9m 또는 12m 이므로 대차 후진 속도에 따라 강관 내면 1회 도장(single pass)할 때의 소요 시간이 정해지므로 생산자의 의도에 따라 중복 도장(multi-pass) 여부를 결정하면 대차 후진 속도를 정하여 작업을 시행한다.
When the spraying of the paint starts as described above, the paint gun 220 of the inner surface painting apparatus 200 is reversed at the same time. The reversing speed is adjusted according to a preset value according to the steel pipe diameter and length, and is usually 1.5 to 3 m / min is appropriate, and the length of one steel pipe is usually 6m, 9m or 12m, so the time required for single pass inside the steel pipe is determined according to the reversing speed of the truck. -pass) determine the reversing speed and start the operation.

한편 상기 강관 내면 도장장치(200)에 의해 도장을 시작함과 아울러 무화포집부재(300)를 가동하여 폴리우레탄 비산 입자에 해당하는 무화된 도료는 별도 분리처리가 이루어지도록 한다.
On the other hand, starting the painting by the steel pipe inner surface coating device 200, and also to operate the atomization collecting member 300 to make a separate coating of the atomized paint corresponding to the polyurethane scattering particles.

그리고 강관 전체 길이에 대한 도장이 완료되면 폴리우레탄 분사를 중지시키고 폴리우레탄 도막이 원심력을 유지하면서 건조가 이뤄지도록 강관의 회전을 10초~30초 정도 지속하고 폴리우레탄 비산 입자를 흡입하기 위한 무화포집부재(300)도 작동 상태를 유지하도록 하고, 강관의 회전이 중단되면 동시에 무화포집부재(300)도 작동이 중단되도록 한다.
When the coating is completed for the entire length of the steel pipe, the polyurethane spraying is stopped, and the atomization collecting member for sucking the polyurethane scattering particles and continuing the rotation of the steel pipe for 10 to 30 seconds so that the polyurethane coating film is dried while maintaining the centrifugal force. 300 also maintains the operating state, and when the rotation of the steel pipe is stopped at the same time so that the atomization collecting member 300 is also stopped.

또, 무화포집부재(300)의 입구나 내부 배관에는 흡입된 폴리우레탄이 누적되어 흡입 효율을 떨어뜨릴 수 있으나 간헐적으로 배관을 분해하여 청소할 수 있도록 설치할 수 있고, 또한 폴리우레탄 비산 입자를 포집한 다음 이를 처리하는 것은 보통의 환경위생처리시설을 적용하는 것이므로 이에 대한 구체적인 설명은 생략한다.
In addition, the intake or internal piping of the atomization collecting member 300 accumulates the sucked polyurethane can reduce the suction efficiency, but may be installed so that the pipe can be disassembled and cleaned intermittently, and also after collecting the polyurethane scattering particles Since the treatment is to apply the normal environmental sanitation treatment facilities, a detailed description thereof will be omitted.

이상에서 본 발명은 상기 실시예를 참고하여 설명하였지만 본 발명의 기술사상범위내에서 다양한 변형실시가 가능함은 물론이다.
While the present invention has been described with reference to the exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

100 : 강관 110 : 회전로울
200 : 도장장치 210 : 승강장치부
212 : 모터 214 : 이동대차
220 : 도장건 230 : 도장분사노즐
300 : 무화포집부재 310 : 진공흡입노즐
312 : 진공흡입관 314 : 진공펌프
320 : 공기분사노즐 322 : 에어콤프레셔
324 : 포집후드 326 : 진공흡입펌프
328 : 집진기
100: steel pipe 110: rotary roll
200: coating device 210: lifting device
212 motor 214 moving cart
220: Coating gun 230: Painting spray nozzle
300: atomization collecting member 310: vacuum suction nozzle
312: vacuum suction pipe 314: vacuum pump
320: air spray nozzle 322: air compressor
324: collection hood 326: vacuum suction pump
328: dust collector

Claims (5)

강관의 내면을 폴리우레탄 도장하기 위한 도장장치에 있어서,
상기 도장장치(200)의 도장건(220) 선단에 구비되어 폴리우레탄 도장이 이루어지도록 하는 도장분사노즐(230)과,
상기 도장분사노즐(230)의 분사과정에서 무화되는 도료를 포집하여 분리처리하기 위한 무화포집부재(300)가 설치된 것을 특징으로 하는 강관 내면의 도장장치.
In the coating device for polyurethane coating the inner surface of the steel pipe,
A coating spray nozzle 230 provided at the tip of the coating gun 220 of the painting apparatus 200 to make a polyurethane coating;
Painting apparatus for the inner surface of the steel pipe, characterized in that the atomization collecting member 300 for collecting and separating the paint to be atomized in the spraying process of the spray injection nozzle 230 is installed.
제 1항에 있어서,
상기 도장장치(200)는 모터(212)로 승강되게 한 승강장치부(210)에 설치되어 높이가 조절되게 하며, 상기 승강장치부(210)는 이동대차(214)를 따라 이동되게 한 이동수단과, 강관(P)은 회전로울(110)에 올려져서 강관(P)이 회전되면서 도장이 이루어지는 구성으로 됨을 특징으로 하는 강관 내면의 도장장치.
The method of claim 1,
The painting device 200 is installed on the elevating device portion 210 to be elevated by the motor 212 to adjust the height, the elevating device 210 is moved means to move along the moving cart 214, Steel pipe (P) is a painting device of the inner surface of the steel pipe, characterized in that the steel pipe (P) is mounted on the rotary roll 110 is made of the coating is rotated.
제 1항에 있어서,
상기 무화포집부재(300)는,
도장건(220)의 일측에 도장에 지장을 주지않고 무화된 도료를 포집할 수 있는 진공흡입노즐(310)이 구비되고 그 진공흡입노즐(310)은 진공흡입관(312)과 연결되어 진공펌프(314)에 의해 흡입작용이 이루어질 수 있도록 한 것을 특징으로 하는 강관 내면의 도장장치.
The method of claim 1,
The atomization collecting member 300,
One side of the coating gun 220 is provided with a vacuum suction nozzle 310 that can collect the atomized paint without interrupting the coating, the vacuum suction nozzle 310 is connected to the vacuum suction pipe 312 is connected to the vacuum pump ( 314) the coating device of the inner surface of the steel pipe, characterized in that the suction action can be made.
제 3항에 있어서,
상기 진공흡입노즐(310)은 도료포집이 용이하도록 나팔 형상으로 구비되고 적어도 3개 이상 구비되어 강관 내면의 상하 및 측부에 있는 무화된 도료의 포집이 용이하도록 한 것을 특징으로 하는 강관 내면의 도장장치.
The method of claim 3, wherein
The vacuum suction nozzle 310 is provided in the shape of a trumpet to facilitate the collection of paint and at least three or more are provided with a coating device for the inner surface of the steel pipe, characterized in that to facilitate the collection of atomized paint in the upper and lower and side portions of the inner surface of the steel pipe .
제 1항에 있어서,
상기 무화포집부재(300)는,
도장건(220) 일측에 수평으로 공기를 불어주는 공기분사노즐(320)을 구비하여 에어콤프레셔(322)와 연결하고 상기 공기분사노즐(320)의 공기분사방향에 위치한 강관(100) 끝단부에 강관의 외경 전체를 감싸는 형태로 포집후드(324)가 구비되고 그 포집후드(324)는 진공흡입펌프(326)와 집진기(328)가 무화된 도료가 포집될 수 있도록 한 것을 특징으로 하는 강관 내면의 도장장치.






The method of claim 1,
The atomization collecting member 300,
It is provided with an air spray nozzle 320 for blowing air horizontally to one side of the paint gun 220 and connected to the air compressor 322 and at the end of the steel pipe 100 located in the air spray direction of the air spray nozzle 320. A collection hood 324 is provided to cover the entire outer diameter of the steel pipe, and the collection hood 324 has a vacuum suction pump 326 and a dust collector 328, so that the atomized paint can be collected. Coating equipment.






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CN105665204A (en) * 2016-02-03 2016-06-15 宜昌利民管业科技有限公司 Synchronous plastic coating production device for inner wall and outer wall of steel pipe
KR102156871B1 (en) * 2020-01-13 2020-09-24 주식회사 제이에스티 Hybrid Polyurea Composite Waterproofing Method Using Dust Collector with Reduced Shattering
CN112718329A (en) * 2020-12-21 2021-04-30 青岛黑铀科技有限公司 Automatic control platform of pipeline anticorrosion heat preservation glass fiber laying device
CN113318876A (en) * 2021-08-03 2021-08-31 河南工学院 Battery heat preservation spraying device

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