Uninterrupted water flow coating device for coating the hole area of a pipe

Abstract

The non-disruptive coating device for coating a perforated portion of a pipe according to the present invention relates to a device capable of performing a treatment to protect a perforated portion formed in a pipe from corrosion, etc., when applying a non-disruptive branching method or a non-disruptive blocking method. It is characterized by comprising: a cylindrical housing part coupled to a gate-type valve installed in a pipe with a perforated portion, having an open bottom surface and a closed top surface; a lifting part installed parallel to the central axis of the cylindrical housing part and moving up and down along the central axis relative to the top surface; a rotary drive part that moves together with the lifting part and rotates with the central axis of the lifting part as a rotation axis, with one end exposed to the upper surface of the lifting part and the other end exposed to the lower surface of the lifting part; a coating part coupled to the other end of the rotary drive part and applying an underwater coating liquid supplied while moving along the exposed surface of the perforation by the rotation of the rotary drive part to the exposed surface; and a supply line part connected to a supply means for supplying the underwater coating liquid and supplying the underwater coating liquid to the coating part. This provides the effect of being able to perform anti-corrosion treatment for a perforated portion formed at any location in the pipe to prevent corrosion, and particularly By applying an underwater coating solution to the perforated area, it is possible to form a coating layer during the implementation of a non-disruptive branching method or a non-disruptive blocking method.

Description

Technology Field

[0001] The present invention relates to a device capable of performing a treatment to protect perforated areas formed in a pipe from corrosion, etc., when applying a non-disruptive branching method or a non-disruptive shut-off method used for maintenance of a fluid-carrying pipe, such as a water supply pipe, and in particular, to a non-disruptive coating device capable of coating perforated areas underwater. Background Technology

[0002] Non-disruptive branching or non-disruptive shut-off methods are methods of performing branching or shut-off on a pipe while maintaining the flow state of the fluid in the pipe. In order to apply non-disruptive branching or non-disruptive shut-off methods, a hole for branching or a hole for inserting a shut-off head must be formed in the pipe.

[0003] That is, as illustrated in the drawing for explaining the perforation formed in the pipe of Fig. 1, in order to implement a non-stop branching method or a non-stop shut-off method, a perforation (3) as illustrated in Fig. 1 (b) is formed at a predetermined location in the pipe (2) through which a fluid such as tap water (1) is flowing, as illustrated in Fig. 1 (a).

[0004] Such a hole (3) is formed by installing a gate-type valve connected to a branch pipe installed in the pipe, and a cylindrical cutting blade is inserted through the gate-type valve to form a hole in the pipe, so that in the non-stop branching method, it is for connecting the branch pipe, and in the non-stop shut-off method, it is for inserting the shut-off head of the fluid shut-off device.

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[0006] Meanwhile, in the case of a pipe (2) made of cast iron or steel, the inner or outer surface of the pipe (2) is typically treated to prevent corrosion, so it is not corroded by a fluid such as tap water (1). However, as shown in (b) of Fig. 1 above, if a hole (3) is formed in the pipe (2) using a drilling machine that forms a hole in the pipe (2), an exposed surface (3-1) is formed that is cut by the drilling machine according to the thickness of the pipe (2).

[0007] Since the exposed surface (3-1) of such a hole (3) is not rust-proofed, it is easily oxidized and rust (4) is formed when exposed to tap water (1) as shown in (c) of Fig. 1 above, and corrosion of the exposed surface (3-1) can cause corrosion in the rust-proofed part around the hole (3).

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[0009] For this reason, when executing the non-disruptive branching method or the non-disruptive blocking method, it is necessary to form a predetermined coating layer (5) along the exposed surface (3-1) of the hole (3) so that the exposed surface (3-1) of the hole (3) is not exposed to tap water (1) as shown in (d) of Fig. 1 above. However, since there is no device capable of coating the exposed surface (3-1) of the hole (3) in a pipe (2) in which fluid is flowing, anti-corrosion treatment for the hole (3) cannot be performed when executing the non-disruptive branching method or the non-disruptive blocking method.

[0010] That is, although non-toxic underwater coating solutions of various materials are used in various fields, there is no means to coat the exposed surface (3-1) of the hole (3) using an underwater coating solution in non-disruptive branching methods or non-disruptive blocking methods.

[0011] For example, various coating agents capable of being coated underwater, such as the invention titled "Method for preventing salt damage and corrosion of concrete and steel structures in water or at sea and underwater coating agent used therein," application number 10-2020-0097876, and furthermore, non-toxic underwater coating agents are being developed and used, so that corrosion prevention treatment can be performed on the perforations (3) of the pipe (1) using these. However, there is no means to coat the exposed surface (3-1) of the perforations (3) formed in the pipe (1) during the implementation of the non-disruption branching method or non-disruption blocking method, so the exposed surface (3-1) is left as is. As a result, in the case of the pipe (2) to which the non-disruption branching method or non-disruption blocking method is applied as in (c) of Fig. 1, significant corrosion occurs at the perforation (3) area, and there is a problem that the durability of the pipe (2) is rapidly reduced due to this corrosion. The problem to be solved

[0012] The present invention was devised to solve the problems of the prior art described above, and aims to provide a non-disruption coating device capable of coating the exposed surface of a perforation formed during the implementation of a non-disruption branching method or a non-disruption blocking method performed at an arbitrary location for the maintenance of a fluid-carrying pipe, such as a water supply pipe, using an underwater coating solution.

[0013] In addition, the present invention aims to provide a non-disruptive coating device capable of maintaining the durability of a pipe by preventing corrosion through coating the exposed surface of a perforation with an underwater coating solution.

[0014] Other objectives of the present invention can be understood through the features of the present invention, more clearly understood through embodiments of the present invention, and can be realized by means and combinations set forth in the claims. means of solving the problem

[0015] In order to achieve the problem that the present invention aims to solve as described above, the present invention has the following technical features.

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[0017] The non-disruptive coating device for coating a perforated portion of a pipe according to the present invention comprises: a cylindrical housing part having an open bottom surface and a closed top surface, coupled to a gate-type valve installed in the pipe having a perforation; a lifting part installed parallel to the central axis of the cylindrical housing part and moving up and down along the central axis with respect to the top surface; a rotary drive part that moves together with the lifting part and rotates with the central axis of the lifting part as a rotation axis, with one end exposed to the upper surface of the lifting part and the other end exposed to the lower surface of the lifting part; and a coating part coupled to the other end of the rotary drive part and applying the supplied underwater coating liquid to the exposed surface while moving along the exposed surface of the perforation by the rotation of the rotary drive part. and a supply line section having a supply nozzle that supplies an underwater coating liquid connected to a supply means for supplying an underwater coating liquid to the coating section, and a supply nozzle that supplies the underwater coating liquid so that the underwater coating liquid can be applied to the exposed surface of the hole by the coating section, and an inlet connected to the supply means for injecting the underwater coating liquid; wherein the coating section comprises a roller-type coating section including a rod having an extension function, one end of which is coupled to the other end of the rotary drive section so as to be rotatable up and down, and a coating roller coupled to the other end of the rod and rotating while in contact with the exposed surface of the hole; wherein the roller-type coating section comprises two rods spaced 180 degrees apart or four rods spaced 90 degrees apart, and the coating roller comprises an intermediate roller in contact with the exposed surface of the hole, an upper roller in contact with the outer diameter surface of a pipe connected to the exposed surface, and a lower roller in contact with the inner diameter surface of a pipe connected to the exposed surface; and wherein the supply line section comprises two supply nozzles and the coating roller It is characterized by being located between the middle roller and the upper roller, and between the middle roller and the lower roller, respectively.

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[0027] In addition, the non-stop coating device for coating a perforated portion of a pipe according to the present invention is characterized in that the supply line portion comprises an inlet installed in the lifting portion and exposed at the top, a supply pipe connected to the inlet and exposed to the cylindrical housing portion through the interior of the lifting portion, and a soft connecting pipe connecting the supply pipe and the supply nozzle.

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[0029] In addition, the non-stop coating device for coating a perforated portion of a pipe according to the present invention is characterized in that the cylindrical housing part further includes a monitoring window that allows the interior of the cylindrical housing part to be visually inspected from the outside. Effects of the invention

[0030] The present invention, through the means of solving the above-mentioned problem, has the effect of forming a coating layer on a perforation in a pipe during the implementation of a non-disruption branching method or a non-disruption blocking method by applying an underwater coating liquid to the perforation area in order to perform anti-corrosion treatment for a perforation formed at an arbitrary location in a pipe for maintenance of a pipe through which a fluid flows, such as a water pipe, and thereby has the effect of preventing corrosion of the pipe caused by the perforation.

[0031] In other words, through the non-disruptive coating device according to the present invention, rust prevention treatment for a perforated pipe can be performed during the non-disruptive branching or shut-off process, thereby maintaining the durability of the pipe and, in the case of water supply pipes, ensuring that the quality of water transport is not affected.

[0032] Other effects of the present invention can be understood through the features of the present invention, can be more clearly understood through the embodiments of the present invention, and can be demonstrated by the means and combinations set forth in the claims. Brief explanation of the drawing

[0033] FIG. 1 is a drawing for explaining a perforation formed in a pipe, FIG. 2 is a drawing for explaining the appearance and configuration of a non-disruptive coating device for coating a perforated portion of a pipe according to the present invention. FIG. 3 is a drawing showing an example of the installation of a non-disruptive coating device for coating a perforated portion of a pipe according to the present invention. FIG. 4 is a drawing for explaining the lifting section of a non-disruptive coating device for coating a perforated portion of a pipe according to the present invention. FIG. 5 is a drawing for explaining the roller-type coating part of a non-disruptive coating device for coating a perforated portion of a pipe according to the present invention. FIG. 6 is a drawing illustrating a coating roller of a non-disruptive coating device for coating a perforated portion of a pipe according to the present invention. Specific details for implementing the invention

[0034] The following detailed description of the invention refers to the accompanying drawings, which illustrate specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that various embodiments of the invention are different but need not be mutually exclusive. For example, specific shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the technical spirit and scope of the invention in relation to one embodiment. Furthermore, it should be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the technical spirit and scope of the invention. Accordingly, the following detailed description is not intended to be limiting, and the scope of the invention is limited only by the appended claims, including all equivalents thereof. Similar reference numerals in the drawings refer to the same or similar functions across various aspects.

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[0036] The non-disruptive coating device for coating the perforated portion of the pipe according to the present invention is designed to provide anti-corrosion treatment to a perforation (3) that occurs during the non-disruptive branching or non-disruptive blocking operation as shown in FIG. 1, and has the characteristic of forming a predetermined coating layer (5) for corrosion prevention along the exposed surface (3-1) of the perforation (3) using an underwater coating liquid as shown in (d) of FIG. 1.

[0037] At this time, the underwater coating liquid according to the present invention may be a non-toxic underwater paint, such as an aqua epoxy paint with excellent adhesion, durability, and chemical resistance; an underwater curing polyurethane paint that has excellent resistance to chemicals and water and provides a soft, glossy finish; an acrylic paint that is water-based, environmentally friendly, fast-drying, and non-toxic; a silicone paint that provides excellent water resistance and durability and forms a flexible, non-toxic coating layer; or a phosphate-based anti-corrosion paint that has excellent corrosion and water resistance and is non-toxic, and is not limited to any specific underwater coating liquid.

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[0039] Hereinafter, the non-disruptive coating device for coating the perforated portion of a pipe according to the present invention will be described in detail through an exemplary embodiment.

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[0041] As shown in FIG. 2, a drawing for explaining the appearance and configuration of a non-disruptive coating device for coating a perforated portion of a pipe according to the present invention, it comprises a cylindrical housing part (10), a lifting part (20), a rotary driving part (30), a coating part (40), and a supply line part (50).

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[0043] The above cylindrical housing (10) is made of a metal material and is coupled with a gate-type valve (7) installed in a pipe (2) with a hole formed therein, as shown in (a) of the drawing showing an example of the installation of a non-stop coating device for coating the perforated portion of the pipe of the present invention in FIG. 3.

[0044] That is, as shown in (a) of Fig. 3 above, in order to implement a non-stop branching method or a non-stop shut-off method, a branch pipe (6) is connected to the pipe (2) by a bolt or welding method, a gate-type valve (7) is installed on the branch pipe (6), and a drill (not shown) is installed on the gate-type valve (7) to form a hole (3) in the pipe (2) for inserting a branch or shut-off head.

[0045] Afterwards, a non-discontinuous coating device according to the present invention is installed at the drilling machine site as shown in FIG. 3, and the drilling (3) area including the exposed surface (3-1) of the drilling (3) as shown in FIG. 1 (d) is coated with an underwater coating liquid to form a coating layer (5).

[0046] Accordingly, the cylindrical housing (10) has a connecting flange (13) for connecting to a gate-type valve (7) by a bolt method in a cylindrical shape with an open bottom surface and a closed top surface as shown in (b) of FIG. 3, and the connecting flange (13) has a plurality of bolt through holes (131) through which a connecting bolt (71) formed in the gate-type valve (7) passes.

[0047] In addition, the cylindrical housing part (10) according to the present invention has a lifting part coupling hole (12) formed in the center of the cylindrical housing part (10) as shown in (b) of FIG. 3, which allows the lifting part (20) to move up and down while in a sealed state.

[0048] Such a lifting member coupling hole (12) can serve as various means to allow a column-shaped movable body to move up and down while sealing it so that fluid does not leak.

[0049] In addition, it is preferable that the cylindrical housing part (10) further includes a viewing window (11) that allows the interior of the cylindrical housing part (10) to be visually inspected from the outside.

[0050] The above-mentioned monitoring window (11) is a means for monitoring the coating part (40) located inside the cylindrical housing part (10) and visually checking the supply status of the underwater coating liquid, and is made of a transparent material such as reinforced glass or reinforced transparent synthetic resin, and can be formed on the upper surface of the cylindrical housing part (10) or on the side of the cylindrical housing part (10) as shown in (b) of FIG. 3.

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[0052] The lifting member (20) is made of a metal material and, as shown in FIG. 4, a drawing for explaining the lifting member of a non-stop coating device for coating a perforated portion of a pipe according to the present invention, is fastened to a lifting member coupling hole (12) located at the central axis of a cylindrical housing part (10) and installed parallel to the central axis of the cylindrical housing part (10) so as to move up and down along the central axis with respect to the upper surface.

[0053] As shown in FIG. 4 above, the lifting member (20) can be formed in various structures and shapes such that the lifting member (20) can move up and down relative to the cylindrical housing member (10), and the position of the coating member (40) changes up and down according to the up and down movement of the lifting member (30).

[0054] That is, the position of the coating part (40) is controlled by the lifting part (20), so the coating part (40) can be moved to the perforation (3) position of the pipe (2) using the lifting part (20), and when the coating work is completed, the coating part (40) can be returned to the inside of the cylindrical housing part (10).

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[0056] As shown in FIG. 4, the above-mentioned rotary drive unit (30) moves up and down together with the lifting unit (30) in a column shape and rotates with the center axis of the lifting unit (30) as the rotation axis, and one end is exposed at the top of the lifting unit (30) and the other end is exposed at the bottom of the lifting unit (30).

[0057] Accordingly, the rotary drive unit (30) is coupled to allow rotation at the central axis of the lifting unit (30), is coupled in a sealed manner to prevent leakage, and serves to rotate the coating unit (40) along the perforation (3).

[0058] Meanwhile, as shown in FIG. 4, a handle (31) for rotating the rotary drive unit (30) around the central axis of the lifting unit (30) may be attached to one end of the rotary drive unit (30), and an installation member (32) for connecting to the coating unit (40) may be attached to the other end.

[0059] Such a rotary drive unit (30) can have various structures and forms installed to enable rotation while sealed in the lifting unit (30), and is not limited to any specific structure and form of a rotary drive unit.

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[0061] As shown in FIG. 4, the coating part (40) is coupled to the other end of the rotary drive part (30), and moves along the exposed surface (3-1) of the hole (3) by the rotation of the rotary drive part (30) and applies an underwater coating liquid supplied from the supply means (8) to the exposed surface (3-1).

[0062] That is, the coating part (40) serves to form a coating layer (5) by applying an underwater coating solution to the exposed surface (3-1) of the perforation (3).

[0063] The coating part (40) can be a coating part (40) of various shapes and structures capable of applying an underwater coating liquid supplied by moving along the exposed surface (3-1) of the hole (3) by the rotating driving part (30) which is connected to and rotates the rotating driving part (30), and is not limited to any specific shape and structure of coating part (40).

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[0065] As shown in FIGS. 2 and 3, the above supply line section (50) is connected to a supply means (8) that supplies an underwater coating liquid and supplies the underwater coating liquid to the coating section (40). It has a supply nozzle (54) that supplies the underwater coating liquid so that the underwater coating liquid can be applied to the exposed surface (3-1) of the perforation (3) by the coating section (40), and an inlet (51) connected to the supply means (8) to inject the underwater coating liquid.

[0066] As shown in FIGS. 2 and 3, the supply line section (50) is characterized by being composed of an inlet (51) installed in the lifting section (20) and exposed at the top, a supply pipe (52) connected to the inlet (51) and exposed to the cylindrical housing section (10) through the interior of the lifting section (20), and a soft connecting pipe (53) connecting the supply pipe (52) and the supply nozzle (54).

[0067] The above soft connecting tube (53) is intended to allow the coating part (40) to move easily according to changes in position and height as the coating part (40) moves along the exposed surface (3-1) of the perforation (3).

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[0069] An example of the coating part (40) according to the present invention is as follows.

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[0071] As illustrated in FIG. 5, a drawing for explaining the roller-type coating part of a non-disruptive coating device for coating a perforated portion of a pipe according to the present invention, the coating part (40) may be a roller-type coating part (400) including a rod (410) and a coating roller (420).

[0072] As shown in (a) of FIG. 5, the roller-type coating unit (400) includes a rod (410) that is connected to the other end of the rotary drive unit (30) so as to be rotatable up and down and has an extension function, and a coating roller (420) that is connected to the other end of the rod (410) and rotates while in contact with the exposed surface (3-1) of the hole (3) to apply the supplied underwater coating liquid to the exposed surface (3-1).

[0073] As shown in (a) of FIG. 5, the roller-type coating part (400) has the characteristic that the coating roller (420) is coupled to the other end of the rod (410) which has an elastic function, and rolls along the exposed surface (3-1) of the hole (3) by the rotation of the rotary drive part (30) to apply the underwater coating liquid to the exposed surface (3-1) of the hole (3).

[0074] In particular, the roller (410) of the roller-type coating part (400) has the feature of being extendable so that the coating roller (420) can move along the exposed surface (3-1) of the perforation (3) which has a change in height, and the feature of being able to maintain a contact state while the coating roller (420) presses the exposed surface (3-1) of the perforation (3) with a predetermined force.

[0075] Accordingly, as shown in (a) of FIG. 5, it is preferable that the rod (410) be coupled to the other end of the rotary drive unit (30) so as to be rotatable up and down, and that it be extended by compressed air or a spring when there is no external force and retracted by an external force, and it is also preferable that the coating roller (420) coupled to the other end of the rod (410) be coupled so as to be rotatable relative to the other end of the rod (410).

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[0077] Meanwhile, such a roller-type coating part (400) may be composed of one to four rods (410).

[0078] For example, the roller-type coating section (400) may be composed of two rods (410) spaced 180 degrees apart, three rods spaced 120 degrees apart, or four rods spaced 90 degrees apart, as shown in (b) of FIG. 5.

[0079] Accordingly, as the coating roller (420) is coupled to each rod (410), when the roller-type coating part (400) consists of one rod (410), the rotary drive unit (30) is rotated one full turn (360 degrees) to coat the exposed surface (3-1) of the hole (3); when the roller-type coating part (400) consists of two rods (410), the rotary drive unit (30) is rotated half a turn (180 degrees) to coat the exposed surface (3-1) of the hole (3); when the roller-type coating part (400) consists of three rods (410), the rotary drive unit (30) is rotated 60 degrees to coat the exposed surface (3-1) of the hole (3); and when the roller-type coating part (400) consists of four rods (410), the rotary drive unit (30) is rotated 45 degrees to coat the exposed surface (3-1) of the hole (3).

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[0081] Meanwhile, as shown in (a) of the drawing for explaining the coating roller of the non-stop coating device for coating the perforated portion of the pipe of the present invention, the coating roller (420-1) that contacts the exposed surface (3-1) of the perforation (3), the upper roller (420-2) that contacts the outer diameter surface (2-1) of the pipe (2) connected to the exposed surface (3-1), and the lower roller (420-3) that contacts the inner diameter surface (2-2) of the pipe (2) connected to the exposed surface (3-1) are preferably formed.

[0082] As shown in Fig. 6(b), the above coating roller (420) forms a coating layer (5) by applying an underwater coating liquid (C) to the adjacent outer diameter surface (2-1) and inner diameter surface (2-2), including the exposed surface (3-1) of the pipe (2), thereby improving the durability of the coating layer (5) and making the anti-corrosion treatment of the exposed surface (3-1) more effective.

[0083] Meanwhile, when the coating roller (420) is composed of an intermediate roller (420-1), an upper roller (420-2), and a lower roller (420-3) as described above, as shown in FIG. 6 (a), the supply line section (50) is preferably composed of two supply nozzles (54) and positioned between the intermediate roller (420-1) and the upper roller (420-2) of the coating roller (420) and between the intermediate roller (420-1) and the lower roller (430-3), respectively, so as to supply the underwater coating liquid (C) to the coating roller (420) so that the underwater coating liquid (C) can be applied more effectively.

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[0085] Although the present invention has been described above based on preferred embodiments, the technical concept of the present invention is not limited thereto, and it is obvious to those skilled in the art that modifications or changes can be made within the scope described in the claims, and such modifications or changes fall within the scope of the appended claims. Explanation of the symbols

[0086] 1 : Tap water 2 : Piping 2-1 : Outer surface 2-2 : Inner surface 3 : Perforation 3-1 : Exposed surface 4 : Green 5: Coating layer 6 : Branch 7: Gate type valve 8: Means of supply 10: Cylindrical hull section 11 : Watch window 12: Lifting part coupling hole 13 : Connecting flange 30: Rotary drive unit 31 : Handle 32 : Installation hole 40: Coating part 50 : Supply line section 51 : Inlet 52 : Supply pipe 53 : Connector 54 : Supply nozzle 71: Connecting bolt 131 : Bolt penetration hole 400 : Roller-type coating section 410 : Load 420: Application Roller 420-1 : Middle roller 420-2 : Upper roller 420-3: Lower roller

Claims

Claim 1 A non-stop coating device for coating a perforated portion of a pipe with an underwater coating liquid selected from aqua epoxy paint, underwater curing polyurethane paint, acrylic paint, silicone paint, and phosphate-based anti-corrosion paint, comprising: a cylindrical housing part coupled to a gate-type valve installed in the pipe with the perforation, having an open bottom surface and a closed top surface; a lifting part installed parallel to the central axis of the cylindrical housing part and moving up and down along the central axis relative to the top surface; a rotary drive part that moves together with the lifting part and rotates with the central axis of the lifting part as a rotation axis, having one end exposed to the upper surface of the lifting part and the other end exposed to the lower surface of the lifting part; and a coating part coupled to the other end of the rotary drive part and applying the supplied underwater coating liquid to the exposed surface while moving along the exposed surface of the perforation by the rotation of the rotary drive part. A supply line section comprising a supply nozzle connected to a supply means for supplying an underwater coating liquid and supplying the underwater coating liquid to the coating section, and supplying the underwater coating liquid so that the underwater coating liquid can be applied to the exposed surface of the hole by the coating section, and an inlet connected to the supply means for injecting the underwater coating liquid; wherein the coating section comprises a roller-type coating section including a rod having an extension function, one end of which is coupled to the other end of the rotary drive section so as to be rotatable up and down, and a coating roller coupled to the other end of the rod and rotating while in contact with the exposed surface of the hole; wherein the roller-type coating section comprises two rods spaced 180 degrees apart or four rods spaced 90 degrees apart, and the coating roller comprises an intermediate roller in contact with the exposed surface of the hole, an upper roller in contact with the outer diameter surface of a pipe connected to the exposed surface, and a lower roller in contact with the inner diameter surface of a pipe connected to the exposed surface; and wherein the supply line section comprises two supply nozzles and the coating roller A non-disruptive coating device for coating perforated portions of a pipe, characterized by being positioned between the middle roller and the upper roller and between the middle roller and the lower roller. Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 delete Claim 6 A non-disruptive coating device for coating a perforated portion of a pipe, characterized in that, in claim 1, the supply line portion comprises an inlet installed in the lifting portion and exposed to the upper part, a supply pipe connected to the inlet and exposed to the cylindrical housing portion through the interior of the lifting portion, and a soft connecting pipe connecting the supply pipe and the supply nozzle. Claim 7 A non-disruptive coating device for coating a perforated portion of a pipe, characterized in that, in claim 1, the cylindrical housing part further includes a monitoring window that allows the interior of the cylindrical housing part to be visually inspected from the outside.

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