KR100898838B1 - 3 layers polyethylenes and polyurea coating device for steel tube and coating method - Google Patents

3 layers polyethylenes and polyurea coating device for steel tube and coating method Download PDF

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KR100898838B1
KR100898838B1 KR1020080053867A KR20080053867A KR100898838B1 KR 100898838 B1 KR100898838 B1 KR 100898838B1 KR 1020080053867 A KR1020080053867 A KR 1020080053867A KR 20080053867 A KR20080053867 A KR 20080053867A KR 100898838 B1 KR100898838 B1 KR 100898838B1
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South Korea
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powder
polyethylene
pipe
straight pipe
polyurea
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KR1020080053867A
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Korean (ko)
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김미구
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신광공업 주식회사
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    • 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
    • B05B13/06—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 specially designed for treating the inside of hollow bodies
    • B05B13/0627—Arrangements of nozzles or spray heads specially adapted for treating the inside of hollow bodies
    • 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
    • B05B13/0207—Means 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
    • 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
    • B05B13/0221—Means 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
    • B05B13/0228—Means 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
    • 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
    • B05B13/06—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 specially designed for treating the inside of hollow bodies
    • B05B13/0645—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 specially designed for treating the inside of hollow bodies the hollow bodies being rotated during treatment operation
    • 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
    • B05B7/14—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 designed for spraying particulate materials
    • B05B7/1404—Arrangements for supplying particulate material
    • B05B7/1459—Arrangements for supplying particulate material comprising a chamber, inlet and outlet valves upstream and downstream the chamber and means for alternately sucking particulate material into and removing particulate material from the chamber through the valves
    • 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
    • B05B7/14—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 designed for spraying particulate materials
    • B05B7/1481—Spray pistols or apparatus for discharging particulate material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/002—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour incorporating means for heating or cooling, e.g. the material to be sprayed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
    • B05D7/146—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies to metallic pipes or tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
    • B05D7/222—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes of pipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants

Abstract

본 발명은 3층 폴리에틸렌과 폴리우레아를 강관에 코팅하는 장치 및 방법에 관한 것으로서, 특히 그 장치는 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 각각 저장하기 위한 분말저장통(10)과;The present invention relates to a device and a method for coating a three-layer polyethylene and polyurea on a steel pipe, in particular the device comprises a powder reservoir (10) for storing powder epoxy, adhesive polyethylene and powder polyethylene, respectively;

상기 분말저장통(10)의 상측에 배치되고 직관(P1)의 양단부가 안착된 상태에서 상기 직관(P1)을 회전시키되, 상기 분말저장통(10)의 상부 양측에 각각 2개씩 설치되는 회전모터(21)와, 상기 각각의 회전모터(21)에 구비되고, 상기 분말저장통(10)의 상측으로 돌출됨과 아울러 상기 직관(P1)의 양단부를 안착시켜 회전모터(21)의 회전운동에 따라 회전됨으로써 직관(P1)을 회전시키며, 외주면에 걸림턱(22a)이 형성되어 상기 직관(P1)의 수평방향 운동을 제어하는 회전축(22)으로 이루어지는 회전수단(20)과;The rotary motor 21 is disposed on the upper side of the powder storage container 10 and rotates the straight pipe P1 in a state where both ends of the straight pipe P1 are seated, and are respectively provided on each of two upper sides of the powder storage container 10. And, provided in each of the rotary motor 21, and protrudes to the upper side of the powder reservoir 10, and seated at both ends of the straight pipe (P1) by rotating in accordance with the rotational movement of the rotary motor 21 straight pipe Rotating means 20 for rotating (P1), the locking step (22a) is formed on the outer circumferential surface to control the horizontal movement of the straight pipe (P1);

일측이 상기 분말저장통(10)에 연결되어 분말저장통(10)에 저장된 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 직관(P1)의 상측으로 이송하는 분말이송수단(30)과;A powder transfer means 30 having one side connected to the powder storage container 10 to transfer powder epoxy, adhesive polyethylene, and powder polyethylene stored in the powder storage container 10 to the upper side of the straight pipe P1;

일측이 상기 분말이송수단(30)의 타측과 연결되어 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 상기 직관(P1)을 향해 순차적으로 수직낙하시켜 직관(P1)의 외면을 코팅하고, 그 타측에 상기 분말저장통(10)과 연결되는 분말배출수단(50)이 더 설치되어, 분말낙하수단(40)에서 직관(P1)을 향하여 낙하되고 남은 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 분말저장통(10)으로 이송시키도록 된 분말낙하수단(40)과;One side is connected to the other side of the powder transfer means 30 to sequentially drop the powder epoxy, adhesive polyethylene and powder polyethylene toward the straight pipe (P1) to coat the outer surface of the straight pipe (P1), the other side of the The powder discharge means 50 is further connected to the powder storage container 10, and the powder epoxy, adhesive polyethylene, and powder polyethylene that are dropped from the powder dropping means 40 toward the straight pipe P1 are left in the powder storage container 10. Powder dropping means (40) to be transferred to the;

상기 분말낙하수단(40)에 의하여 외면이 코팅된 직관(P1)의 내면에 폴리우레아를 코팅하되,폴리우레아가 저장된 분사기(61)와, 일단이 상기 분사기(61)에 연결되고 타단이 상기 직관(P1)의 내면쪽에 인입되어 폴리우레아를 직관(P1)의 내면쪽으로 안내하며 외주면에 열선(64)이 감긴 이송관(62)과, 상기 이송관(62)의 타단에 설치되어 폴리우레아를 직관(P1)의 내면에 분사하는 분사노즐(63)로 이루어진 내면코팅수단(60);으로 구성되고,The polyurea is coated on the inner surface of the straight pipe (P1) coated with the outer surface by the powder dropping means (40), and the injector (61) in which the polyurea is stored, and one end is connected to the injector (61) and the other end is the straight pipe. A feed pipe 62 drawn into the inner surface side of P1 to guide the polyurea toward the inner surface of the straight pipe P1 and wound around the outer circumferential surface, and installed at the other end of the feed pipe 62 to direct the polyurea. And an inner surface coating means (60) made of a spray nozzle (63) for spraying on the inner surface of (P1),

그 방법은 쇼트 블라스팅으로 직관(P1) 또는 이형관(P2)의 내외면에 산재된 이물질을 제거하는 표면처리단계와;The method includes a surface treatment step of removing foreign matters scattered on the inner and outer surfaces of the straight pipe P1 or the release pipe P2 by shot blasting;

상기 표면처리단계에서 처리된 직관(P1) 또는 이형관(P2)을 가열실 내부로 이송하고, 상기 직관(P1) 또는 이형관(P2)을 회전시키면서 그 상측에서 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 순차적으로 수직낙하시키되, 상기 직관(P1) 또는 이형관(P2)의 표면에 부착되지 않고 하측으로 떨어진 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 포집하고 이것을 다시 상측으로 이송하여 수직낙하시키는 과정을 복수회 반복하는 외면코팅단계와;Transfer the straight pipe (P1) or the release pipe (P2) treated in the surface treatment step into the inside of the heating chamber, while rotating the straight pipe (P1) or the release pipe (P2) on top of the powder epoxy, adhesive polyethylene and powder polyethylene A plurality of processes of vertically falling down, collecting powder epoxy, adhesive polyethylene, and powdered polyethylene dropped to the lower side without being attached to the surface of the straight pipe (P1) or the release pipe (P2) and transporting them vertically again Repeating the outer coating step;

외면 코팅된 직관(P1) 또는 이형관(P2)을 정역회전시키면서 그 내면에 열선에 의하여 가열된 폴리우레아를 도포하는 내면코팅단계;로 구성되어, 코팅작업을 연속적으로 수행함으로써 코팅시간을 단축시킬 수 있고, 점도가 높은 폴리우레아를 강관의 내부에 용이하게 코팅할 수 있는 이점이 있다.Internal coating step of applying a polyurea heated by a hot wire on its inner surface while rotating the outer coated straight pipe (P1) or the release pipe (P2) forward and forward, consisting of, by reducing the coating time by performing the coating operation continuously And, there is an advantage that can be easily coated on the inside of the steel pipe with a high viscosity polyurea.

강관, 직관, 이형관, 코팅, 폴리에틸렌, 폴리우레아, 열선Steel Pipe, Straight Pipe, Deformed Pipe, Coating, Polyethylene, Polyurea, Heated Wire

Description

3층 폴리에틸렌과 폴리우레아를 강관에 코팅하는 장치 및 방법{3 Layers Polyethylenes and Polyurea coating device for steel tube and coating method}3 Layers Polyethylenes and Polyurea coating device for steel tube and coating method}

본 발명은 3층 폴리에틸렌과 폴리우레아를 강관에 코팅하는 장치 및 방법에 관한 것으로서, 특히 강관의 코팅과정을 연속적으로 수행하여 코팅시간을 단축시킬 수 있을 뿐만 아니라 계절과 날씨에 관계없이 강관의 내면을 원활하게 코팅할 수 있는 3층 폴리에틸렌과 폴리우레아를 강관에 코팅하는 장치 및 방법에 관한 것이다.The present invention relates to a device and a method for coating three-layer polyethylene and polyurea on a steel pipe, and in particular, the coating process of the steel pipe can be carried out continuously to shorten the coating time, and the inner surface of the steel pipe regardless of season and weather. The present invention relates to an apparatus and a method for coating a steel pipe with a three-layer polyethylene and polyurea that can be smoothly coated.

일반적으로, 관 또는 파이프는 유체를 이송시키기 위하여 사용되는 안내부재를 말한다. 이러한 관들은 재질에 따라 강관, 동관, 주철관, 수지관 등으로 분류할 수 있고, 이러한 관들을 상수도와 하수도에 사용하거나 유류, 가스 등의 유체를 이송하기 위하여 사용할 때에는 방청, 방식 등의 성능을 갖추도록 하여야만 관의 내구성을 증대할 수 있을 뿐만 아니라 이송대상 유체의 물성을 보존할 수 있다.In general, a pipe or pipe refers to a guide member used for transporting a fluid. These pipes can be classified into steel pipes, copper pipes, cast iron pipes, resin pipes, etc., depending on the material.These pipes have anti-corrosion and anticorrosive properties when used for water and sewage, or for transporting fluids such as oil and gas. It is possible to increase the durability of the pipe as well as to preserve the physical properties of the fluid to be transferred.

따라서, 상기한 관의 종류 중에서 특히 많이 사용되는 강관은 방청, 방식의 기능들을 갖도록 하기 위하여 외면에 폴리에틸렌 코팅층을 형성시키고 내면에 세라믹층 또는 폴리우레아층을 형성시킨다.Therefore, steel pipes, which are particularly used among the above types of pipes, form a polyethylene coating layer on the outer surface and a ceramic layer or the polyurea layer on the inner surface in order to have the functions of rust prevention and anticorrosion.

강관에 코팅층을 형성시키기 위한 종래의 일반적인 방법은 침지식이다. 이러한 방법은 관의 양단에 체인을 연결하기 위하여 캡을 장착하여야 하는 등 코팅작업을 연속적을 수행할 수 없고 대용량 브로어를 사용해야 하기 때문에 많은 전기를 사용하는 문제점을 갖고 있다.A conventional general method for forming a coating layer on a steel pipe is immersion. This method has a problem of using a lot of electricity because it is not possible to perform a continuous coating work, such as the need to install a cap to connect the chain at both ends of the tube and use a large-capacity brower.

또한, 폴리우레아는 수분과 잘 반응하지 않는 특성이 있어서 방식용도로 종래에도 사용되었으나, 그 점도가 매우 높아서 이것을 강관의 내면에 도포하기 위해서는 매우 높은 온도(보통 70℃ 이상)로 가열하여야만 하는데 이러한 작업이 어려운 문제점이 있다.In addition, polyurea does not react well with moisture, so it has been used conventionally for anticorrosive purposes, but its viscosity is so high that in order to apply it to the inner surface of the steel pipe, it must be heated to a very high temperature (usually 70 ° C. or more). There is this difficult problem.

본 발명은 상기한 종래 기술의 문제점을 해결하기 위하여 안출된 것으로서, 코팅공정을 연속적으로 수행하여 코팅시간을 단축하고 절감할 수 있는 3층 폴리에틸렌과 폴리우레아를 강관에 코팅하는 장치 및 방법을 제공하는데 그 목적이 있다.The present invention has been made to solve the problems of the prior art, to provide a device and method for coating a three-layer polyethylene and polyurea on the steel pipe that can reduce and reduce the coating time by performing the coating process continuously. The purpose is.

또한, 열선을 사용하여 폴리우레아를 가열함으로써 계절과 날씨에 상관없이 원활한 코팅작업을 수행할 수 있는 3층 폴리에틸렌과 폴리우레아를 강관에 코팅하는 장치 및 방법을 제공하는데 그 목적이 있다.In addition, it is an object of the present invention to provide a device and method for coating a three-layer polyethylene and polyurea to the steel pipe that can perform a smooth coating regardless of the season and weather by heating the polyurea using a heating wire.

상기한 과제를 해결하기 위한 본 발명에 의한 3층 폴리에틸렌과 폴리우레아를 강관에 코팅하는 장치는 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 각각 저장하기 위한 분말저장통과; 상기 분말저장통의 상측에 배치되고 직관의 양단부가 안착된 상태에서 상기 직관을 회전시키되 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 각각 저장하기 위한 분말저장통(10)과; 상기 분말저장통(10)의 상측에 배치되고 직관(P1)의 양단부가 안착된 상태에서 상기 직관(P1)을 회전시키되, 상기 분말저장통(10)의 상부 양측에 각각 2개씩 설치되는 회전모터(21)와, 상기 각각의 회전모터(21)에 구비되고, 상기 분말저장통(10)의 상측으로 돌출됨과 아울러 상기 직관(P1)의 양단부를 안착시켜 회전모터(21)의 회전운동에 따라 회전됨으로써 직관(P1)을 회전시키며, 외주면에 걸림턱(22a)이 형성되어 상기 직관(P1)의 수평방향 운동을 제어하는 회전축(22)으로 이루어지는 회전수단과; 일측이 상기 분말저장통에 연결되어 분말저장통에 저장된 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 직관의 상측으로 이송하는 분말이송수단과; 일측이 상기 분말이송수단의 타측과 연결되어 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 상기 직관을 향해 순차적으로 수직낙하시켜 직관의 외면을 코팅하고 그 타측에 상기 분말저장통(10)과 연결되는 분말배출수단(50)이 더 설치되어, 분말낙하수단(40)에서 직관(P1)을 향하여 낙하되고 남은 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 분말저장통(10)으로 이송시키도록 된 분말낙하수단과; 상기 분말낙하수단에 의하여 외면이 코팅된 직관의 내면에 폴리우레아를 코팅하되,폴리우레아가 저장된 분사기(61)와, 일단이 상기 분사기(61)에 연결되고 타단이 상기 직관(P1)의 내면쪽에 인입되어 폴리우레아를 직관(P1)의 내면쪽으로 안내하며 외주면에 열선(64)이 감긴 이송관(62)과, 상기 이송관(62)의 타단에 설치되어 폴리우레아를 직관(P1)의 내면에 분사하는 분사노즐(63)로 이루어진 내면코팅수단;을 포함하여 구성된다.Apparatus for coating a three-layer polyethylene and polyurea in a steel pipe according to the present invention for solving the above problems is a powder storage container for storing powder epoxy, adhesive polyethylene and powder polyethylene, respectively; A powder reservoir (10) disposed on an upper side of the powder reservoir and rotating the straight tube in a state where both ends of the straight tube are seated, and storing powder epoxy, adhesive polyethylene, and powder polyethylene, respectively; The rotary motor 21 is disposed on the upper side of the powder storage container 10 and rotates the straight pipe P1 in a state where both ends of the straight pipe P1 are seated, and are respectively provided on each of two upper sides of the powder storage container 10. And, provided in each of the rotary motor 21, and protrudes to the upper side of the powder reservoir 10, and seated at both ends of the straight pipe (P1) by rotating in accordance with the rotational movement of the rotary motor 21 straight pipe Rotating means for rotating (P1), the locking projection (22a) is formed on the outer peripheral surface consisting of a rotating shaft 22 for controlling the horizontal movement of the straight pipe (P1); A powder transfer means connected to one side of the powder reservoir to transfer the powder epoxy, the adhesive polyethylene, and the powdered polyethylene stored in the powder reservoir to an upper side of the straight pipe; One side is connected to the other side of the powder conveying means and the powder epoxy, adhesive polyethylene and powdered polyethylene are sequentially dropped vertically toward the straight pipe to coat the outer surface of the straight pipe and the powder discharge connected to the powder reservoir 10 on the other side. A means 50 is further provided to drop the powder epoxy, the adhesive polyethylene, and the powder polyethylene, which are dropped from the powder dropping means 40 toward the straight pipe P1, to the powder storage container 10; The polyurea is coated on the inner surface of the straight pipe coated with the outer surface by the powder dropping means, and the injector 61 in which the polyurea is stored and one end thereof are connected to the injector 61 and the other end is on the inner surface side of the straight pipe P1. The feed pipe 62 is drawn in and guides the polyurea toward the inner surface of the straight pipe P1 and is wound around the outer circumferential surface, and is installed at the other end of the feed pipe 62. The polyurea is formed on the inner surface of the straight pipe P1. It is configured to include; the inner surface coating means consisting of a spray nozzle (63) for spraying.

또한, 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 각각 저장하기 위한 분말저장통(10)과; 상기 분말저장통(10)의 상측에 배치되고 이형관(P2)의 양단부가 끼움된 상태에서 상기 이형관(P2)을 회전시키되, 상기 분말저장통(10)의 상부 양측에 각각 설치되고 회전축(22)이 구비된 회전모터(21)와, 상기 회전축(22)의 끝단에 일체로 형성된 구동기어(23)와, 상기 구동기어(23)에 맞물려 회전되는 종동기어(24)와, 상기 종동기어(24)에 일체로 형성되어 상기 이형관(P2)의 양단이 끼움되는 끼움부(25)로 이루어진 회전수단(20)과; 일측이 상기 분말저장통(10)에 연결되어 분말저장통(10)에 저장된 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 이형관(P2)의 상측으로 이송하는 분말이송수단(30)과; 일측이 상기 분말이송수단(30)의 타측과 연결되어 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 상기 이형관(P2)을 향해 순차적으로 수직낙하시켜 이형관(P2)의 외면을 코팅하고, 그 타측에 상기 분말저장통(10)과 연결되는 분말배출수단(50)이 더 설치되어, 분말낙하수단(40)에서 이형관(P2)을 향하여 낙하되고 남은 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 분말저장통(10)으로 이송시키도록 된 분말낙하수단(40)과; 상기 분말낙하수단(40)에 의하여 외면이 코팅된 이형관(P2)의 내면에 폴리우레아를 코팅하되, 폴리우레아를 이송하고 외주면에 열선(64)이 감긴 에어분사 케이블(65)과, 상기 에어분사 케이블(65)에 연결되어 상기 이형관(P2)의 내부에 폴리우레아를 분사하는 에어건(66)으로 이루어지는 내면코팅수단(60);을 포함하여 구성된다.In addition, the powder storage container 10 for storing the powder epoxy, adhesive polyethylene and powder polyethylene, respectively; Is disposed on the upper side of the powder reservoir (10) and rotates the release tube (P2) in a state in which both ends of the release tube (P2) is fitted, respectively installed on the upper both sides of the powder reservoir (10) and the rotary shaft 22 is provided The rotary motor 21, the drive gear 23 integrally formed at the end of the rotary shaft 22, the driven gear 24 rotated in engagement with the drive gear 23, and the driven gear 24 Rotating means (20) formed integrally with a fitting portion (25) in which both ends of the release pipe (P2) are fitted; A powder transfer means 30 having one side connected to the powder storage container 10 to transfer powder epoxy, adhesive polyethylene, and powder polyethylene stored in the powder storage container 10 to an upper side of the release tube P2; One side is connected to the other side of the powder transfer means 30 to sequentially drop the powder epoxy, adhesive polyethylene and powder polyethylene toward the release tube (P2) to coat the outer surface of the release tube (P2), the other side of the The powder discharge means 50 is further connected to the powder storage container 10 is installed, the powder epoxy, the adhesive polyethylene and the powdered polyethylene falling from the powder dropping means 40 toward the release pipe (P2) powder storage container 10 Powder dropping means (40) to be transferred to the; The polyurea is coated on the inner surface of the release pipe (P2) coated on the outer surface by the powder dropping means 40, the air spraying cable (65) wound the heating wire 64 and the polyurea is transferred to the outer peripheral surface, and the air spraying It is connected to the cable 65; the inner surface coating means (60) consisting of an air gun (66) for injecting a polyurea in the interior of the release pipe (P2);

또한, 본 발명에 의한 3층 폴리에틸렌과 폴리우레아를 강관에 코팅하는 방법은 쇼트 블라스팅으로 직관 또는 이형관의 내외면에 산재된 이물질을 제거하는 표면처리단계와; 상기 표면처리단계에서 처리된 직관 또는 이형관을 가열실 내부로 이송하고, 상기 직관 또는 이형관을 회전시키면서 그 상측에서 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 순차적으로 수직낙하시키되, 상기 직관 또는 이형관의 표면에 부착되지 않고 하측으로 떨어진 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 포집하고 이것을 다시 상측으로 이송하여 수직낙하시키는 과정을 복수회 반복하는 외면코팅단계와; 외면 코팅된 직관 또는 이형관을 정역회전시키면서 그 내면에 열선에 의하여 가열된 폴리우레아를 도포하는 내면코팅단계;로 구성된다.In addition, the method of coating the three-layer polyethylene and polyurea according to the present invention on the steel pipe is a surface treatment step of removing the foreign matter scattered on the inner and outer surfaces of the straight pipe or the release pipe by shot blasting; Transfer the straight tube or the release tube treated in the surface treatment step into the heating chamber, while rotating the straight tube or the release tube in order to vertically drop the powder epoxy, adhesive polyethylene and powder polyethylene on the upper side, the surface of the straight or release tube An outer coating step of repeating a process of collecting powder epoxy, adhesive polyethylene, and powdered polyethylene which are not attached to the lower side and transporting the powdered polyethylene to the upper side and dropping them vertically; The inner surface coating step of applying a polyurea heated by a hot wire on the inner surface while rotating the outer surface coated straight tube or a release tube forward and reverse.

상기와 같이 구성되는 본 발명의 3층 폴리에틸렌과 폴리우레아를 강관에 코팅하는 장치 및 방법은 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 수직낙하시키고 낙하된 분말을 다시 상측으로 끌어올려 낙하시키는 작업을 연속적으로 수행하여 강관의 외면에 코팅을 하므로 코팅시간을 단축시킬 수 있는 이점이 있다.Apparatus and method for coating the three-layer polyethylene and polyurea of the present invention configured as described above to the steel pipe vertically dropping the powder epoxy, adhesive polyethylene and powdered polyethylene and pulling up the falling powder back upwards Since the coating is performed on the outer surface of the steel pipe, there is an advantage that can shorten the coating time.

또한, 열선으로 폴리우레아를 가열하여 강관의 내부에 분사하므로, 온도에 영향을 받지 않고 점도가 높은 폴리우레아를 강관의 내부에 코팅할 수 있는 이점이 있다.In addition, since the polyurea is heated by the hot wire and sprayed into the steel pipe, there is an advantage that the polyurea having a high viscosity can be coated inside the steel pipe without being affected by temperature.

이하, 본 발명에 의한 3층 폴리에틸렌과 폴리우레아를 강관에 코팅하는 장치 및 방법의 실시 예를 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings an embodiment of the apparatus and method for coating a three-layer polyethylene and polyurea in a steel pipe according to the present invention will be described in detail.

도 1은 본 발명에 의한 3층 폴리에틸렌과 폴리우레아를 직관에 코팅하는 장치를 보인 도이고, 도 2는 본 발명에 의한 3층 폴리에틸렌과 폴리우레아를 이형관에 코팅하는 장치를 보인 도이다.1 is a view showing a device for coating a three-layer polyethylene and polyurea in a straight tube according to the present invention, Figure 2 is a view showing a device for coating a three-layer polyethylene and polyurea in a release tube according to the present invention.

또한, 도 3은 본 발명에 의한 분말낙하수단을 보인 도이고, 도 4는 본 발명에 의한 직관의 내면코팅수단을 보인 도이며, 도 5는 본 발명에 의한 이형관의 내면코팅수단을 보인 도이다.In addition, Figure 3 is a view showing the powder dropping means according to the present invention, Figure 4 is a view showing the inner surface coating means of the straight pipe according to the present invention, Figure 5 is a view showing the inner surface coating means of the release tube according to the present invention. .

본 발명에 의한 3층 폴리에틸렌과 폴리우레아를 강관에 코팅하는 장치는 직관에 코팅하는 장치와 이형관에 코팅하는 장치로 나누어 볼 수 있는데, 먼저 직관에 코팅하는 장치를 설명한 후에 이형관에 코팅하는 장치를 구성하는 요소 중에서 직관에 코팅하는 장치와 차이점을 갖는 구성요소에 대하여 설명하도록 한다.The apparatus for coating three-layer polyethylene and polyurea according to the present invention can be divided into a device for coating on a straight pipe and a device for coating on a release pipe. First, after describing a device for coating on a straight pipe, the device is coated on a release pipe. Among the elements to be described will be described a component having a difference from the coating device on the straight pipe.

본 발명에 의한 3층 폴리에틸렌과 폴리우레아를 직관에 코팅하는 장치는 도1에 도시된 바와 같이 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 저장하는 분말저장통(10)과, 상기 분말저장통(10)의 상측에 배치되어 직관(P1)을 회전시키는 회전수단(20)과, 상기 분말저장통(10)에 연결된 분말이송수단(30)과, 상기 분말이송수단(30)에 연결되어 직관(P1)의 상측에서 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 수직낙하시킴으로써 직관(P1)의 외면을 코팅하는 분말낙하수단(40)과, 상기 분말낙하수단(40) 및 분말저장통(10)과 연결된 분말배출수단(50)과, 상기 분말낙하수단(40)에 의하여 외면이 코팅된 직관(P1)의 내면에 폴리우레아를 코팅하는 내면코팅수단(60)으로 구성된다.Apparatus for coating a three-layer polyethylene and polyurea in a straight tube according to the present invention is a powder storage container 10 for storing the powder epoxy, adhesive polyethylene and powdered polyethylene as shown in Figure 1, and the powder storage container 10 of Rotating means 20 disposed on the upper side to rotate the straight pipe P1, powder transfer means 30 connected to the powder storage container 10, and connected to the powder transfer means 30, the upper side of the straight pipe P1 Powder dropping means 40 for coating the outer surface of the straight pipe P1 by vertically dropping the powder epoxy, the adhesive polyethylene and the powdered polyethylene in the powder discharge means 40 and the powder discharge means connected to the powder storage container 10 ( 50) and the inner surface coating means 60 for coating the polyurea on the inner surface of the straight pipe P1 whose outer surface is coated by the powder dropping means 40.

상기 분말저장통(10)은 내부에 빈 공간이 형성되어 그 내부공간에 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 각각 수납되도록 구성하되, 직관(P1)의 외면에 분말에폭시, 접착성 폴리에틸렌 및 분말에틸렌 순으로 3층 코팅이 이루어지도록 구성된다. 그리고 상기 분말저장통(10)의 상면은 중앙을 향하여 하향 경사지게 형성되는 한편, 이의 상면 중앙부에는 복수개의 분말유입구(11)를 형성하여 상기 분말유입구(11)를 통해 직관(P1)의 외면에 부착되고 하측으로 낙하된 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 다시 분말저장통(10) 내부로 유입시키도록 구성된다.The powder storage container 10 has an empty space formed therein to be configured to accommodate the powder epoxy, adhesive polyethylene and powder polyethylene in the inner space, respectively, powder epoxy, adhesive polyethylene and powder ethylene on the outer surface of the straight pipe (P1) It is configured to achieve a three layer coating in that order. And the upper surface of the powder storage container 10 is formed to be inclined downward toward the center, while the upper surface of the central portion formed a plurality of powder inlet 11 is attached to the outer surface of the straight pipe (P1) through the powder inlet (11) Powder epoxy, adhesive polyethylene, and powdered polyethylene dropped to the lower side is configured to flow back into the powder reservoir (10).

상기 회전수단(20)은 분말저장통(10)의 상측에 배치되어 직관(P1)의 양단부가 안착된 상태에서 상기 직관(P1)을 회전시키는 것으로서, 회전모터(21)와, 상기 회전모터(21)에 구비된 회전축(22)으로 구성된다.The rotating means 20 is disposed above the powder storage container 10 to rotate the straight pipe P1 in a state where both ends of the straight pipe P1 are seated, the rotating motor 21 and the rotating motor 21. It consists of a rotating shaft 22 provided in).

상기 회전모터(21)는 상기 분말저장통(10)의 상부 양측에 각각 2개씩 일정간 격을 이루며 설치된다.The rotary motor 21 is installed at regular intervals of two each on both sides of the upper portion of the powder reservoir (10).

상기 회전축(22)은 상기 각각의 회전모터(21)에 구비되므로 총 4개로 이루어지고 상기 분말저장통(10)의 상측으로 돌출된다. 그래야만 회전축(22)의 상측에 양단부가 안착된 직관(P1)이 안정적으로 그 위치를 잡을 수 있다. 이러한 회전축(22)의 외주면에는 걸림턱(22a)이 형성되어 회전모터(21)의 회전운동을 전달받아 회전축(22)이 회전하는 동안 직관(P1)의 수평방향 운동을 제어한다. 즉, 걸림턱(22a)이 형성되지 않으면 회전축(22)이 회전하는 동안 직관(P1)이 어느 일측의 회전모터(21)를 향하여 그 위치가 점점 이동되어 결국 회전수단(20)에서 이탈될 수 있다.Since the rotating shaft 22 is provided in each of the rotating motors 21, the rotating shaft 22 is formed in total and protrudes upward of the powder storage container 10. Only then, the straight pipe P1 having both ends seated on the upper side of the rotating shaft 22 can stably position its position. A locking jaw 22a is formed on the outer circumferential surface of the rotary shaft 22 to receive the rotational motion of the rotary motor 21 to control the horizontal movement of the straight pipe P1 while the rotational shaft 22 rotates. That is, if the locking step 22a is not formed, while the rotary shaft 22 rotates, the straight pipe P1 is gradually moved toward the rotation motor 21 on one side, and thus may be released from the rotation means 20. have.

상기 분말이송수단(30)은 일측이 상기 분말저장통(10)에 연결되어 분말저장통(10)에 저장된 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 직관(P1)의 상측으로 이송하는 것으로, 분말이송관(31)과, 상기 분말이송관(31)의 관로상에 설치되는 흡입펌프(32)로 구성된다.The powder transfer means 30 is one side is connected to the powder reservoir 10 to transfer the powder epoxy, adhesive polyethylene and powdered polyethylene stored in the powder reservoir 10 to the upper side of the straight pipe (P1), powder transfer pipe (31), and the suction pump 32 is provided on the pipeline of the powder transfer pipe (31).

상기 분말이송관(31)은 일측이 상기 분말저장통(10)에 연결되고 타측이 상기 분말낙하수단(40)에 연결되므로, 분말이송관(31)의 일측은 상기 직관(P1)의 하측에 위치되지만 분말이송관(31)의 타측은 상기 직관(P1)의 상측에 위치된다.The powder transfer pipe 31 is one side is connected to the powder storage container 10 and the other side is connected to the powder dropping means 40, one side of the powder transfer pipe 31 is located below the straight pipe (P1) However, the other side of the powder transfer pipe 31 is located above the straight pipe P1.

상기 흡입펌프(32)는 펌핑을 하여 분말저장통(10) 속의 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 분말이송관(31)의 타측으로 이송하여 상기 분말낙하수단(40)에 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 공급한다.The suction pump 32 pumps the powder epoxy, the adhesive polyethylene, and the powder polyethylene in the powder storage container 10 to the other side of the powder transfer pipe 31 to pump the powder epoxy and the adhesive to the powder dropping means 40. Polyethylene and powdered polyethylene are fed.

상기 분말낙하수단(40)은 일측이 상기 분말이송수단(30)의 타측과 연결되어 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 상기 직관(P1)을 향하여 순차적으로 수직낙하시킴으로써 직관(P1)의 외면을 코팅하는 것으로서, 양단이 밀폐되고 내부에 빈 공간이 형성된 중공관(41)과, 상기 중공관(41)의 양단에 설치된 모터(42)와, 상기 모터(42)에 양단이 연결되고 중공관(41)의 내부에 삽입되어 모터(42)의 회전력을 전달받아 회전하는 수평축(43)과, 상기 수평축(43)의 외주면에 형성된 스크류(44)로 구성된다.The powder dropping means 40 has one side connected to the other side of the powder transfer means 30 so that the powder epoxy, adhesive polyethylene and powdered polyethylene are sequentially vertically dropped toward the straight pipe P1, so that the outer surface of the straight pipe P1 is closed. By coating the, both ends are sealed and the hollow tube 41 is formed inside the empty space, the motor 42 is provided at both ends of the hollow tube 41, both ends are connected to the motor 42 and the hollow tube It is composed of a horizontal shaft 43 is inserted into the inside of the 41 and rotated in response to the rotational force of the motor 42, and a screw 44 formed on the outer peripheral surface of the horizontal shaft 43.

상기 중공관(41)은 복수개의 분말낙하홀(41a)이 형성되고 상기 분말이송관(31)의 타측이 연결된다. 이때 상기 분말낙하홀(41a)은 하측에 배치된 직관(P1)을 향하여 형성되어야만 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 수직으로 낙하시킬 수 있다.The hollow tube 41 is formed with a plurality of powder dropping holes (41a) and the other side of the powder transfer pipe 31 is connected. In this case, the powder dropping hole 41a must be formed toward the straight pipe P1 disposed below to drop the powder epoxy, the adhesive polyethylene, and the powder polyethylene vertically.

상기 스크류(44)는 도3에 도시된 바와 같이 중공관(41)의 내부에 형성되고 모터(42)의 회전력을 받아 회전하면서 중공관(41)의 내부 일측으로 유입된 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 중공관(41)의 타측으로 이송시키며, 이렇게 이송되는 과정 중에 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌이 분말낙하홀(41a)로 이동될 수 있도록 한다.The screw 44 is formed in the hollow tube 41, as shown in Figure 3 and the powder epoxy, adhesive polyethylene introduced into one side of the hollow tube 41 while rotating under the rotational force of the motor 42 And the powder polyethylene to the other side of the hollow tube 41, so that the powder epoxy, the adhesive polyethylene, and the powder polyethylene can be moved to the powder dropping hole 41a during the conveying process.

상기 분말배출수단(50)은 도1에 도시된 바와 같이 상기 분말낙하수단(40)의 중공관(41)과 분말저장통(10)에 각각 연결되어 분말낙하수단(40)의 중공관(41)에서 직관(P1)을 향하여 낙하된 후 중공관(41) 내부에 남아 있는 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 분말저장통(10)으로 이송한다.The powder discharge means 50 is connected to the hollow tube 41 and the powder storage container 10 of the powder dropping means 40, respectively, as shown in Figure 1 hollow tube 41 of the powder dropping means 40 After dropping toward the straight pipe (P1) to transfer the powder epoxy, adhesive polyethylene and powder polyethylene remaining inside the hollow tube 41 to the powder reservoir (10).

이러한 분말배출수단(50)은 일측이 상기 분말저장통(10)에 연결되고 타측이 상기 분말낙하수단(40)의 중공관(41)에 각각 연결된 분말배출관(51)과, 상기 분말배출관(51)의 관로상에 설치된 분말배출펌프(52)로 구성된다.The powder discharge means 50 is a powder discharge pipe 51 and one side is connected to each of the powder storage container 10 and the other side is connected to the hollow tube 41 of the powder dropping means 40, and the powder discharge pipe 51 It consists of a powder discharge pump 52 installed on the conduit.

상기 분말배출펌프(52)는 펌핑을 함으로써 중공관(41)의 분말낙하홀(41a)을 통하여 낙하되고 남은 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 상기 분말저장통(10) 내부로 공급한다.The powder discharge pump 52 supplies the remaining powder epoxy, adhesive polyethylene, and powder polyethylene, which are dropped through the powder dropping hole 41a of the hollow tube 41, into the powder storage container 10 by pumping.

상기 내면코팅수단(60)은 상기 분말낙하수단(40)에 의하여 외면이 코팅된 직관(P1)의 내면을 폴리우레아로 코팅하는 것이다.The inner surface coating means 60 is to coat the inner surface of the straight pipe (P1) coated with the outer surface by the powder dropping means 40 with polyurea.

이러한 내면코팅수단(60)은 폴리우레아가 저장된 분사기(61)와, 상기 분사기에 연결된 이송관(62)과, 상기 이송관(62)에 설치된 분사노즐(63)로 구성된다.The inner coating means 60 is composed of an injector 61 in which polyurea is stored, a transfer pipe 62 connected to the injector, and an injection nozzle 63 installed in the transfer pipe 62.

상기 분사기(61)는 하측에 바퀴가 설치되어 이동가능하도록 구성됨으로써 상기 이송관(62)이 직관(P1)의 내외부로 출입될 수 있도록 하였다.The injector 61 is configured to be movable by installing a wheel on the lower side to allow the transfer pipe 62 to enter and exit the inside and outside of the straight pipe (P1).

상기 이송관(62)은 일단이 상기 분사기(61)에 연결되고 타단이 상기 직관(P1)의 내면쪽에 인입되어 폴리우레아를 직관(P1)의 내면쪽으로 안내하는 것으로, 외주면에 열선(64)이 감겨 점성이 높은 폴리우레아의 이송을 원활하게 한다.The transfer pipe 62 is one end is connected to the injector 61 and the other end is introduced into the inner surface side of the straight pipe (P1) to guide the polyurea toward the inner surface of the straight pipe (P1), the heating wire 64 on the outer peripheral surface Winding smoothly transfers highly viscous polyurea.

상기 분사노즐(63)은 이송관(62)의 타단에 설치되어 폴리우레아를 직관(P1)의 내면에 고르게 분사한다.The injection nozzle 63 is installed at the other end of the transfer pipe 62 to evenly spray the polyurea on the inner surface of the straight pipe (P1).

상기와 같이 구성되는 코팅장치의 분말저장통(10), 회전수단(20), 분말이송수단(30), 분말낙하수단(40) 및 분말배출수단(50)은 분말 에폭시와 접착성 폴리에틸렌 및 분말 폴리에틸렌이 직관(P1)에 용이하게 코팅되기 위하여 가열실(미도시) 내부에 설치되는 것이 바람직하다.The powder storage container 10, the rotating means 20, the powder transfer means 30, the powder dropping means 40 and the powder discharge means 50 of the coating apparatus configured as described above are powder epoxy and adhesive polyethylene and powder polyethylene. In order to easily coat this straight pipe P1, it is preferable that it is installed in a heating chamber (not shown).

이상에서는 직관에 폴리에틸렌과 폴리우레아를 코팅하는 장치에 대해서 설명하였고, 이하에서는 이형관에 폴리에틸렌과 폴리우레아를 코팅하는 장치에 대해서 설명한다.In the above, the apparatus for coating polyethylene and polyurea on a straight tube has been described, and the apparatus for coating polyethylene and polyurea on a release tube will be described below.

본 발명에 의한 3층 폴리에틸렌과 폴리우레아를 이형관에 코팅하는 장치는 도2에 도시된 바와 같이 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 저장하는 분말저장통(10)과, 상기 분말저장통(10)의 상측에 배치되고 이형관(P2)의 양단부가 끼움된 상태에서 상기 이형관(P2)을 회전시키는 회전수단(20)과, 일측이 상기 분말저장통(10)에 연결되어 분말저장통(10)에 저장된 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 이형관(P2)의 상측으로 이송하는 분말이송수단(30)과, 일측이 상기 분말이송수단(30)의 타측과 연결되어 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 상기 이형관(P2)을 향하여 순차적으로 수직낙하시킴으로써 이형관(P2)의 외면을 코팅하는 분말낙하수단(40)과, 상기 분말낙하수단(40) 및 분말저장통(10)과 연결되어 분말낙하수단(40)에서 이형관(P2)을 향하여 낙하되고 남은 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 분말저장통(10)으로 이송시키는 분말배출수단(50)과, 상기 분말낙하수단(40)에 의하여 외면이 코팅된 이형관(P2)의 내면에 폴리우레아를 코팅하는 내면코팅수단(60)으로 구성된다.The apparatus for coating three-layer polyethylene and polyurea according to the present invention on a release tube includes a powder storage container 10 for storing powder epoxy, adhesive polyethylene, and powder polyethylene, as shown in FIG. It is disposed on the upper side and the rotating means 20 for rotating the release tube (P2) in a state in which both ends of the release tube (P2) is fitted, and one side is connected to the powder reservoir (10) powder epoxy stored in the powder reservoir (10) , Powder conveying means 30 for conveying the adhesive polyethylene and powder polyethylene to the upper side of the release tube (P2), and one side is connected to the other side of the powder conveying means 30 to the powder epoxy, adhesive polyethylene and powder polyethylene Powder drop means 40 for coating the outer surface of the release pipe (P2) by sequentially falling vertically toward the release pipe (P2), and connected to the powder drop means 40 and the powder reservoir (10) By the powder discharge means (50) for transferring the powder epoxy, adhesive polyethylene and powder polyethylene remaining after falling toward the release tube (P2) from the dropping means (40) and the powder dropping means (40) The outer surface is composed of an inner surface coating means 60 for coating a polyurea on the inner surface of the release tube (P2) coated.

상기와 같은 구성되는 이형관에 코팅하는 장치는 도2에 도시된 바와 같이 대부분의 구성요소와 설치장소가 직관에 코팅하는 장치와 동일하게 구성되고, 회전수단(20)과 내면코팅수단(60)만이 다르므로, 여기에서는 이 다른 부분에 대해서만 설명하도록 한다.The apparatus for coating on the release tube is configured as described above is configured in the same manner as the device for coating most components and the installation place on the straight pipe, as shown in Figure 2, only the rotating means 20 and the inner coating means 60 Since it is different, we will only discuss this different part here.

상기 회전수단(20)은 분말저장통(10)의 상부 양측에 각각 설치되고 회전축(22)이 구비된 회전모터(21)와, 상기 회전축(22)의 끝단에 일체로 형성되어 회전축(22)과 동시에 회전하는 구동기어(23)와, 상기 구동기어(23)에 맞물려 회전되는 종동기어(24)와, 상기 종동기어(24)에 일체로 형성되어 상기 이형관(P2)의 양단이 끼움되는 끼움부(25)로 구성된다.The rotating means 20 are respectively installed on the upper both sides of the powder storage container 10, the rotary motor 21 and the rotary shaft 22 is provided, integrally formed at the end of the rotary shaft 22 and the rotary shaft 22 and A driving gear 23 that rotates at the same time, a driven gear 24 that is rotated in engagement with the drive gear 23, and a fitting portion formed integrally with the driven gear 24 so that both ends of the release pipe P2 are fitted. It consists of 25.

상기 끼움부(25)는 상기 구동기어(23)에 일체로 형성된 본체부(25a)와, 상기 본체부(25a)의 끝단에 형성되되 본체부(25a)보다 큰 직경으로 형성되어 이형관(P2)의 끝단이 삽입 고정되는 체결부(25b)로 구성된다.The fitting portion 25 is formed at the end of the main body portion 25a integrally formed with the drive gear 23 and the main body portion 25a, but is formed with a larger diameter than the main body portion 25a, thereby forming a release pipe P2. The end is composed of a fastening portion 25b is inserted and fixed.

상기 내면코팅수단(60)은 도4 및 도5에 도시된 바와 같이 폴리우레아를 이송하고 외주면에 열선(64)이 감긴 에어분사 케이블(65)과, 상기 에어분사 케이블(65)에 연결되어 상기 이형관(P2)의 내부에 폴리우레아를 분사하는 에어건(66)으로 구성된다.The inner coating means 60 is connected to the air spraying cable 65 and the air spraying cable 65 transporting the polyurea and wound with a heating wire 64 on the outer circumferential surface as shown in FIGS. 4 and 5. It consists of an air gun 66 which injects a polyurea into the inside of the release pipe P2.

상기와 같이 에어분사 케이블(65)의 외주면에 열선이 감김으로써, 점성이 높은 폴리우레아를 이형관(P2)의 내부에 용이하게 코팅할 수 있다.As described above, the hot wire is wound around the outer circumferential surface of the air spray cable 65, so that a highly viscous polyurea can be easily coated inside the release tube P2.

한편, 본 발명에 의한 강관의 코팅방법은 상기와 같이 구성된 코팅장치를 이용하여 수행된다.On the other hand, the coating method of the steel pipe according to the present invention is carried out using the coating apparatus configured as described above.

본 발명에 의한 강관의 코팅방법은 직관(P1) 또는 이형관(P2)의 내외면에 산재된 이물질을 깨끗이 청소하는 표면처리단계와, 표면처리된 직관(P1) 또는 이형관(P2)의 외면에 분말 에폭시와 접착성 폴리에틸렌 및 분말 폴리에틸렌을 순차적으로 코팅하는 외면코팅단계와, 외면 코팅된 직관(P1) 또는 이형관(P2)의 내면을 코팅하는 내면코팅단계로 구성된다.The coating method of the steel pipe according to the present invention is a surface treatment step of cleaning the foreign matter scattered on the inner and outer surfaces of the straight pipe (P1) or the release pipe (P2) and the powder on the outer surface of the surface-treated straight pipe (P1) or release pipe (P2) The outer coating step of sequentially coating the epoxy and adhesive polyethylene and powder polyethylene, and the inner coating step of coating the inner surface of the outer coated straight pipe (P1) or the release pipe (P2).

상기 표면처리단계는 쇼트 블라스팅에 의하여 강관의 내외면에서 녹 또는 기름성분 등을 제거하여 나중에 코팅되는 코팅재가 박리되는 것을 방지할 수 있도록 하는 공정이다.The surface treatment step is to remove the rust or oil components from the inner and outer surfaces of the steel pipe by shot blasting to prevent the coating material to be coated later peeled off.

상기 외면코팅단계는 상기 표면처리단계에서 처리된 직관(P1) 또는 이형관(P2)을 가열실 내부로 이송하고, 상기 직관(P1) 또는 이형관(P2)을 회전시키면서 그 상측에서 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 순차적으로 수직낙하시키되, 상기 직관(P1) 또는 이형관(P2)의 표면에 부착되지 않고 하측으로 떨어진 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 포집하고 이것을 다시 상측으로 이송하여 수직낙하시키는 과정을 복수회 반복하는 공정이다.The outer coating step is to transfer the straight pipe (P1) or the release pipe (P2) treated in the surface treatment step into the inside of the heating chamber, while rotating the straight pipe (P1) or release pipe (P2) on the powder epoxy, adhesive The polyethylene and powdered polyethylene are sequentially dropped vertically, and the powdered epoxy, the adhesive polyethylene, and the powdered polyethylene dropped to the lower side without being attached to the surface of the straight pipe (P1) or the release pipe (P2) and are transported to the upper side to fall vertically. It is a process which repeats the process of making it multiple times.

분말 에폭시를 예로 들어 좀 더 부연하면, 분말저장통(10)에 저장된 분말 에폭시는 흡입펌프(32)에 의하여 분말이송관(31)을 거쳐 분말낙하수단(40)의 중공관(41) 내부로 공급된다. 이렇게 공급된 분말 에폭시는 스크류(44)의 회전에 의하여 이송되면서 분말낙하홀(41a)을 통하여 직관(P1) 또는 이형관(P2)에 수직낙하된다.For example, the powder epoxy stored in the powder storage container 10 is supplied into the hollow tube 41 of the powder dropping means 40 through the powder transfer pipe 31 by the suction pump 32. do. The powder epoxy thus supplied is vertically dropped onto the straight pipe P1 or the release pipe P2 through the powder dropping hole 41a while being transferred by the rotation of the screw 44.

이렇게 낙하된 분말 에폭시는 일정량이 직관(P1) 또는 이형관(P2)의 외면에 부착되고, 나머지는 분말저장통(10)의 상면으로 떨어지며, 이것은 분말유입구(11)를 통하여 분말저장통(10) 내부로 들어간다.The powder epoxy dropped in this way is attached to the outer surface of the straight pipe (P1) or the release pipe (P2), and the rest falls on the upper surface of the powder reservoir (10), which is through the powder inlet (11) into the powder reservoir (10) Enter

한편, 중공관(41) 내부에 공급된 분말 에폭시 중에서 분말낙하홀(41a)로 낙하되지 않은 분말 에폭시는 분말배출펌프(52)에 의하여 분말배출관(51)을 거쳐 분말저장통(10) 내부로 유입된다. 이러한 과정이 복수회 반복되어 원하는 만큼 분말 에폭시가 코팅되면 접착성 폴리에틸렌과 분말 폴리에틸렌을 사용하여 상기와 같은 작업이 순차적으로 진행되는 것이다.Meanwhile, the powder epoxy not dropped into the powder dropping hole 41a among the powder epoxy supplied into the hollow tube 41 is introduced into the powder storage container 10 through the powder discharge pipe 51 by the powder discharge pump 52. do. If this process is repeated a plurality of times and the powder epoxy is coated as desired, the above operation is sequentially performed using the adhesive polyethylene and the powder polyethylene.

상기 내면코팅단계는 외면 코팅된 직관(P1) 또는 이형관(P2)을 정역회전시키면서 그 내면에 열선(64)에 의하여 가열된 폴리우레아를 도포하는 공정이다.The inner coating step is a process of applying the polyurea heated by the heating wire 64 on the inner surface while rotating the outer coated straight pipe (P1) or the release pipe (P2) forward and reverse.

상기와 같이 본 발명에 의한 코팅장치와 코팅방법에 대하여 자세히 설명하였고, 그 설명을 함에 있어서 동일한 이름으로 명명된 구성요소는 동일한 도면부호가 부여되었음을 밝혀둔다.As described above, the coating apparatus and the coating method according to the present invention have been described in detail, and the components named with the same names in the description thereof are given the same reference numerals.

도 1은 본 발명에 의한 3층 폴리에틸렌과 폴리우레아를 직관에 코팅하는 장치를 보인 도.Figure 1 shows an apparatus for coating a three-layer polyethylene and polyurea in a straight tube according to the present invention.

도 2는 본 발명에 의한 3층 폴리에틸렌과 폴리우레아를 이형관에 코팅하는 장치를 보인 도..Figure 2 shows a device for coating a three-layer polyethylene and polyurea in the release tube according to the present invention.

도 3은 본 발명에 의한 분말낙하수단을 보인 도.Figure 3 shows a powder dropping means according to the present invention.

도 4는 본 발명에 의한 직관의 내면코팅수단을 보인 도.Figure 4 is a view showing the inner surface coating means of the straight pipe according to the present invention.

도 5는 본 발명에 의한 이형관의 내면코팅수단을 보인 도.5 is a view showing the inner surface coating means of the release tube according to the present invention.

<도면의 주요 부분에 관한 부호의 설명><Explanation of symbols on main parts of the drawings>

10: 분말저장통 11: 분말유입구10: powder reservoir 11: powder inlet

20: 회전수단 21: 회전모터20: rotation means 21: rotation motor

22: 회전축 22a: 걸림턱22: rotating shaft 22a: locking jaw

23: 구동기어 24: 종동기어23: drive gear 24: driven gear

25: 끼움부 30: 분말이송수단25: fitting portion 30: powder transfer means

31: 분말이송관 32: 흡입펌프31: powder transfer pipe 32: suction pump

40: 분말낙하수단 41: 중공관40: powder dropping means 41: hollow tube

41a: 분말낙하홀 42: 모터41a: powder dropping hole 42: motor

43: 수평축 44: 스크류43: horizontal axis 44: screw

50: 분말배출수단 51: 분말배출관50: powder discharge means 51: powder discharge tube

52: 분말배출펌프 60: 내면코팅수단52: powder discharge pump 60: inner coating means

61: 분사기 62: 이송관61: injector 62: feed pipe

63: 분사노즐 64: 열선63: injection nozzle 64: heating wire

65: 에어분사 케이블 66: 에어건65: air spray cable 66: air gun

Claims (13)

삭제delete 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 각각 저장하기 위한 분말저장통(10)과;A powder reservoir 10 for storing powder epoxy, adhesive polyethylene, and powder polyethylene, respectively; 상기 분말저장통(10)의 상측에 배치되고 직관(P1)의 양단부가 안착된 상태에서 상기 직관(P1)을 회전시키되, 상기 분말저장통(10)의 상부 양측에 각각 2개씩 설치되는 회전모터(21)와, 상기 각각의 회전모터(21)에 구비되고, 상기 분말저장통(10)의 상측으로 돌출됨과 아울러 상기 직관(P1)의 양단부를 안착시켜 회전모터(21)의 회전운동에 따라 회전됨으로써 직관(P1)을 회전시키며, 외주면에 걸림턱(22a)이 형성되어 상기 직관(P1)의 수평방향 운동을 제어하는 회전축(22)으로 이루어지는 회전수단(20)과;The rotary motor 21 is disposed on the upper side of the powder storage container 10 and rotates the straight pipe P1 in a state where both ends of the straight pipe P1 are seated, and are respectively provided on each of two upper sides of the powder storage container 10. And, provided in each of the rotary motor 21, and protrudes to the upper side of the powder reservoir 10, and seated at both ends of the straight pipe (P1) by rotating in accordance with the rotational movement of the rotary motor 21 straight pipe Rotating means 20 for rotating (P1), the locking step (22a) is formed on the outer circumferential surface to control the horizontal movement of the straight pipe (P1); 일측이 상기 분말저장통(10)에 연결되어 분말저장통(10)에 저장된 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 직관(P1)의 상측으로 이송하는 분말이송수단(30)과;A powder transfer means 30 having one side connected to the powder storage container 10 to transfer powder epoxy, adhesive polyethylene, and powder polyethylene stored in the powder storage container 10 to the upper side of the straight pipe P1; 일측이 상기 분말이송수단(30)의 타측과 연결되어 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 상기 직관(P1)을 향해 순차적으로 수직낙하시켜 직관(P1)의 외면을 코팅하고, 그 타측에 상기 분말저장통(10)과 연결되는 분말배출수단(50)이 더 설치되어, 분말낙하수단(40)에서 직관(P1)을 향하여 낙하되고 남은 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 분말저장통(10)으로 이송시키도록 된 분말낙하수단(40)과;One side is connected to the other side of the powder transfer means 30 to sequentially drop the powder epoxy, adhesive polyethylene and powder polyethylene toward the straight pipe (P1) to coat the outer surface of the straight pipe (P1), the other side of the The powder discharge means 50 is further connected to the powder storage container 10, and the powder epoxy, adhesive polyethylene, and powder polyethylene that are dropped from the powder dropping means 40 toward the straight pipe P1 are left in the powder storage container 10. Powder dropping means (40) to be transferred to the; 상기 분말낙하수단(40)에 의하여 외면이 코팅된 직관(P1)의 내면에 폴리우레아를 코팅하되,폴리우레아가 저장된 분사기(61)와, 일단이 상기 분사기(61)에 연결되고 타단이 상기 직관(P1)의 내면쪽에 인입되어 폴리우레아를 직관(P1)의 내면쪽으로 안내하며 외주면에 열선(64)이 감긴 이송관(62)과, 상기 이송관(62)의 타단에 설치되어 폴리우레아를 직관(P1)의 내면에 분사하는 분사노즐(63)로 이루어진 내면코팅수단(60);을 포함하여 구성된 것을 특징으로 하는 3층 폴리에틸렌과 폴리우레아를 강관에 코팅하는 장치.The polyurea is coated on the inner surface of the straight pipe (P1) coated with the outer surface by the powder dropping means (40), and the injector (61) in which the polyurea is stored, and one end is connected to the injector (61) and the other end is the straight pipe. A feed pipe 62 drawn into the inner surface side of P1 to guide the polyurea toward the inner surface of the straight pipe P1 and wound around the outer circumferential surface, and installed at the other end of the feed pipe 62 to direct the polyurea. Apparatus for coating a three-layer polyethylene and polyurea on the steel pipe, characterized in that it comprises a; inner surface coating means (60) consisting of a spray nozzle (63) for spraying on the inner surface of (P1). 삭제delete 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 각각 저장하기 위한 분말저장통(10)과;A powder reservoir 10 for storing powder epoxy, adhesive polyethylene, and powder polyethylene, respectively; 상기 분말저장통(10)의 상측에 배치되고 이형관(P2)의 양단부가 끼움된 상태에서 상기 이형관(P2)을 회전시키되, 상기 분말저장통(10)의 상부 양측에 각각 설치되고 회전축(22)이 구비된 회전모터(21)와, 상기 회전축(22)의 끝단에 일체로 형성된 구동기어(23)와, 상기 구동기어(23)에 맞물려 회전되는 종동기어(24)와, 상기 종동기어(24)에 일체로 형성되어 상기 이형관(P2)의 양단이 끼움되는 끼움부(25)로 이루어진 회전수단(20)과;Is disposed on the upper side of the powder reservoir (10) and rotates the release tube (P2) in a state in which both ends of the release tube (P2) is fitted, respectively installed on the upper both sides of the powder reservoir (10) and the rotary shaft 22 is provided The rotary motor 21, the drive gear 23 integrally formed at the end of the rotary shaft 22, the driven gear 24 rotated in engagement with the drive gear 23, and the driven gear 24 Rotating means (20) formed integrally with a fitting portion (25) in which both ends of the release pipe (P2) are fitted; 일측이 상기 분말저장통(10)에 연결되어 분말저장통(10)에 저장된 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 이형관(P2)의 상측으로 이송하는 분말이송수단(30)과;A powder transfer means 30 having one side connected to the powder storage container 10 to transfer powder epoxy, adhesive polyethylene, and powder polyethylene stored in the powder storage container 10 to an upper side of the release tube P2; 일측이 상기 분말이송수단(30)의 타측과 연결되어 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 상기 이형관(P2)을 향해 순차적으로 수직낙하시켜 이형관(P2)의 외면을 코팅하고, 그 타측에 상기 분말저장통(10)과 연결되는 분말배출수단(50)이 더 설치되어, 분말낙하수단(40)에서 이형관(P2)을 향하여 낙하되고 남은 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 분말저장통(10)으로 이송시키도록 된 분말낙하수단(40)과;One side is connected to the other side of the powder transfer means 30 to sequentially drop the powder epoxy, adhesive polyethylene and powder polyethylene toward the release tube (P2) to coat the outer surface of the release tube (P2), the other side of the The powder discharge means 50 is further connected to the powder storage container 10 is installed, the powder epoxy, the adhesive polyethylene and the powdered polyethylene falling from the powder dropping means 40 toward the release pipe (P2) powder storage container 10 Powder dropping means (40) to be transferred to the; 상기 분말낙하수단(40)에 의하여 외면이 코팅된 이형관(P2)의 내면에 폴리우레아를 코팅하되, 폴리우레아를 이송하고 외주면에 열선(64)이 감긴 에어분사 케이블(65)과, 상기 에어분사 케이블(65)에 연결되어 상기 이형관(P2)의 내부에 폴리우레아를 분사하는 에어건(66)으로 이루어지는 내면코팅수단(60);을 포함하여 구성된 것을 특징으로 하는 3층 폴리에틸렌과 폴리우레아를 강관에 코팅하는 장치.The polyurea is coated on the inner surface of the release pipe (P2) coated on the outer surface by the powder dropping means 40, the air spraying cable (65) wound the heating wire 64 and the polyurea is transferred to the outer peripheral surface, and the air spraying A three-layer polyethylene and polyurea comprising: an inner surface coating means (60) connected to a cable (65) and made of an air gun (66) for injecting a polyurea into the release pipe (P2). Coating device. 청구항 2 또는 청구항 4에 있어서,The method according to claim 2 or 4, 상기 분말저장통(10)은 상면이 중앙을 향하여 하향 경사지게 형성되고, 상면 중앙부에는 복수개의 분말유입구(11)가 형성된 것을 특징으로 하는 3층 폴리에틸렌과 폴리우레아를 강관에 코팅하는 장치.The powder reservoir (10) is the top surface is formed to be inclined downward toward the center, the upper surface central portion is a device for coating a three-layer polyethylene and polyurea on the steel pipe, characterized in that formed a plurality of powder inlet (11). 삭제delete 삭제delete 청구항 2 또는 청구항 4에 있어서,The method according to claim 2 or 4, 상기 분말이송수단(30)은 일측과 타측이 상기 분말저장통(10)과 상기 분말낙하수단(40)에 각각 연결된 분말이송관(31)과;The powder transfer means 30 includes a powder transfer pipe 31 having one side and the other side connected to the powder reservoir 10 and the powder dropping means 40, respectively; 상기 분말이송관(31)의 관로상에 설치되어 분말저장통(10) 속의 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 상기 분말낙하수단(40)에 공급하는 흡입펌프(32);로 구성된 것을 특징으로 하는 3층 폴리에틸렌과 폴리우레아를 강관에 코팅하는 장치.A suction pump 32 installed on a pipe of the powder transfer pipe 31 to supply powder epoxy, adhesive polyethylene, and powder polyethylene in the powder storage container 10 to the powder dropping means 40; Apparatus for coating a three-layer polyethylene and polyurea to the steel pipe. 청구항 2 또는 청구항 4에 있어서,The method according to claim 2 or 4, 상기 분말낙하수단(40)은 복수개의 분말낙하홀(41a)이 형성되고 상기 분말이송관(31)의 타측이 연결된 중공관(41)과;The powder dropping means 40 includes a hollow tube 41 in which a plurality of powder dropping holes 41a are formed and the other side of the powder transfer pipe 31 is connected; 상기 중공관(41)의 양단 중 적어도 일단에 설치된 모터(42)와;A motor 42 installed at at least one of both ends of the hollow tube 41; 상기 모터(42)에 연결되고 상기 중공관(41)의 내부에 삽입되어 회전하는 수평축(43)과;A horizontal shaft 43 connected to the motor 42 and inserted into the hollow tube 41 to rotate; 상기 수평축(43)의 외주면에 형성되어 중공관 내부로 유입된 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 이송시키는 스크류(44);로 구성된 것을 특징으로 하는 3층 폴리에틸렌과 폴리우레아를 강관에 코팅하는 장치.It is formed on the outer circumferential surface of the horizontal axis 43, the screw 44 for conveying the powder epoxy, adhesive polyethylene and powder polyethylene introduced into the hollow tube; to coat the three-layer polyethylene and polyurea on the steel pipe, characterized in that consisting of Device. 청구항 2 또는 청구항 4에 있어서,The method according to claim 2 or 4, 상기 분말배출수단(50)은 일측과 타측이 상기 분말저장통(10)과 상기 분말낙하수단(40)의 중공관(41)에 각각 연결된 분말배출관(51)과;The powder discharge means 50 includes a powder discharge pipe 51 having one side and the other side connected to the hollow tube 41 of the powder reservoir 10 and the powder dropping means 40, respectively; 상기 분말배출관(51)의 관로상에 설치되어 중공관(41)의 분말낙하홀(41a)을 통하여 낙하되고 남은 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 상기 분말저장통(10) 내부로 공급하는 분말배출펌프(52);로 구성된 것을 특징으로 하는 3층 폴리에틸렌과 폴리우레아를 강관에 코팅하는 장치.Powder which is installed on the pipeline of the powder discharge pipe 51 and supplied through the powder dropping hole 41a of the hollow pipe 41 and the remaining powder epoxy, adhesive polyethylene, and powder polyethylene into the powder storage container 10. Discharge pump (52); Apparatus for coating a three-layer polyethylene and polyurea on the steel pipe, characterized in that consisting of. 삭제delete 삭제delete 쇼트 블라스팅으로 직관(P1) 또는 이형관(P2)의 내외면에 산재된 이물질을 제거하는 표면처리단계와;A surface treatment step of removing foreign matters scattered on the inner and outer surfaces of the straight pipe P1 or the release pipe P2 by shot blasting; 상기 표면처리단계에서 처리된 직관(P1) 또는 이형관(P2)을 가열실 내부로 이송하고, 상기 직관(P1) 또는 이형관(P2)을 회전시키면서 그 상측에서 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 순차적으로 수직낙하시키되, 상기 직관(P1) 또는 이형관(P2)의 표면에 부착되지 않고 하측으로 떨어진 분말 에폭시, 접착성 폴리에틸렌 및 분말 폴리에틸렌을 포집하고 이것을 다시 상측으로 이송하여 수직낙하시키는 과정을 복수회 반복하는 외면코팅단계와;Transfer the straight pipe (P1) or the release pipe (P2) treated in the surface treatment step into the inside of the heating chamber, while rotating the straight pipe (P1) or the release pipe (P2) on top of the powder epoxy, adhesive polyethylene and powder polyethylene A plurality of processes of vertically falling down, collecting powder epoxy, adhesive polyethylene, and powdered polyethylene dropped to the lower side without being attached to the surface of the straight pipe (P1) or the release pipe (P2) and transporting them vertically again Repeating the outer coating step; 외면 코팅된 직관(P1) 또는 이형관(P2)을 정역회전시키면서 그 내면에 열선에 의하여 가열된 폴리우레아를 도포하는 내면코팅단계;로 구성된 것을 특징으로 하는 3층 폴리에틸렌과 폴리우레아를 강관에 코팅하는 방법.Coating the three-layer polyethylene and polyurea on the steel pipe, characterized in that consisting of; an inner surface coating step of applying a polyurea heated by a heating wire on its inner surface while rotating the outer coated straight pipe (P1) or the release pipe (P2) Way.
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CN111036436B (en) * 2019-12-30 2020-11-13 山东天龙建设发展有限公司 Spraying device is used in building tubular product processing
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KR102118946B1 (en) 2020-02-11 2020-06-05 (주)광성이엔지 coating systems of muilt-PE and epoxy for steel pipe
KR102118945B1 (en) 2020-02-20 2020-06-04 (주)광성이엔지 epoxy pigments for steel pipe and coating methods thereof
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CN112264231A (en) * 2020-09-28 2021-01-26 清华大学盐城环境工程技术研发中心 Surface coating device for pipe fitting
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CN113117938B (en) * 2021-05-26 2022-11-22 新疆龙锦建设工程有限公司 Steel pipe surface spraying equipment suitable for inner and outer walls for building
CN113117938A (en) * 2021-05-26 2021-07-16 上海可沅建筑工程有限公司 Steel pipe surface spraying equipment suitable for inner and outer walls for building
KR102347309B1 (en) 2021-06-17 2022-01-12 주식회사 태성스틸 Eco cerapoxy gold epoxy pigments for steel pipe, coating methods and coating system thereof
KR102401931B1 (en) 2021-09-29 2022-05-27 주식회사 태성스틸 Eco cerapoxy gold epoxy pigments for steel pipe, coating methods and coating system thereof
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KR20230106235A (en) 2022-01-06 2023-07-13 한국에너지기술연구원 Ammonia low NOx combustion and Operating Method thereof
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CN114832991A (en) * 2022-05-24 2022-08-02 大连理工大学 System for spraying catalyst for winding type heat exchange tube bundle
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