KR101886572B1 - Pipe cleaning device - Google Patents

Abstract

The present invention relates to a pipe cleaning device for removing foreign matter attached to the inside of a pipe by being inserted into the pipe, comprising: a center shaft having a water supply path therein; a scraper installed on the center shaft to remove foreign matter attached to the inside of the pipe; a nozzle installed on the center shaft for cleaning foreign matter attached to the inside of the pipe by extruding high-pressure water; and spokes and a wheel coupled with the spokes, which are attached to the center shaft and adapted to move the pipe cleaning device to the inside of the pipe, wherein the scraper includes a plurality of rakes provided in the circumferential direction of the center shaft. Each of the rakes is rotatably coupled to the center shaft, and thus the diameter of the scraper can be increased or decreased to clean pipes with various diameters. Also, free reciprocation can be performed to the front and the rear of the pipe such that satisfactory cleaning is possible even when foreign matter is attached in quantity or is hardly removed.

Description

Pipe cleaning device

The present invention relates to a pipe cleaning apparatus, and more particularly, to a pipe cleaning apparatus that scrapes foreign matter with a scraper while moving inside a water pipe, a sewer pipe, etc. and extrudes and cleans the high pressure water, .

Generally, as pipes such as waterworks and sewage pipes are used for a long period of time, various foreign substances are introduced into the pipes together with water and deposited inside the pipes or attached to the walls. These foreign substances not only interfere with the flow of water but also deteriorate the quality of the water.

Accordingly, devices for cleaning the interior of the pipe have been developed to solve the problem of adhering foreign substances to the pipes of the water supply, sewage, and the like or accumulating sediments.

For example, Korean Patent No. 10-1346585 discloses "a dredging and cleaning apparatus for a sewer having a photographing function" (see Figs. 4A to 4B) A water injection nozzle 20 provided at the rear of the main body and spraying water supplied from the water hose at a high pressure; And a camera (30) built in the front of the main body and photographing the cleaning state of the sewer pipe. The apparatus for dredging and cleaning a sewer pipe according to claim 1, A protective window 11 to be opened and closed; an operation assembly 13 for protruding and rotating the camera from the inside of the main body when the protective window is opened; A scrubber 16 provided along a lower edge of the through-going slot to contact the protection window, a hinge 17 provided at both side edges of the protection window so that the protection window can be rotated, , And is formed to be stepped on the inner side of the lower edge of the outlet slot so as to face the scrubber, The dredging and cleaning apparatus according to claim 1, further comprising a protection step (18) for forming a rotation space of the protection window between the water hose and the drain hose, A moving body; A water spray nozzle provided at the rear of the main body for spraying water supplied from the water hose at a high pressure; And a camera that is built in the front of the main body and captures the cleaning state of the sewage pipe. By using the apparatus, it is possible to relatively easily and economically check the cleaning state of the entire section where the sewer is sewn and cleaned, And to provide a dredging and cleaning apparatus for a sewer having the sewer pipe.

However, in the related art, since the pipeline is cleaned only by water spraying, the efficiency of removal of adhered and hardened foreign matter on the inner wall of the pipe is inefficient, and when water is present in the pipe, There is a problem.

Also, Korean Patent Laid-Open No. 10-2008-0040372 discloses a "water pipe cleaning device" (see FIGS. 4C to 4D). This prior art has a front part 100 provided at the front; And a cleaning means 220 for cleaning the inner wall of the water supply pipe 10. The cleaning means 220 may be provided on the outer surface of the front portion 100, And an internal high pressure hose 240 connected to the dispensing device 230 is installed in the inside of the hose 240. The high pressure hose 240 is connected to the high pressure hose 240, A body part 200 provided; A rear part 300 through which the inner high-pressure hose 240 of the body part 200 is passed through the center, the side part being hermetically coupled to the other side surface of the body part 200; The end of the inner high-pressure hose (240) of the body part (200) is rotatably coupled to one side and the end of the external high-pressure hose (450) connected to the compressor (700) A rotary joint part 400 formed on an outer circumferential surface of which a branched portion 410 to which a supporting high-pressure hose 460 branching at one end of the external high-pressure hose 450 is coupled; And a pushing and moving device 500 that passes through the external high pressure hose 450 and moves in close contact with the inner wall of the water supply pipe 10 by the air pressure fed through the supporting high pressure hose 460 Wherein the cleaning device is put in a state in which water is present in the pipe, and the inner wall of the pipe is cleaned by air pressure. The water pipe cleaning device according to claim 1, And to provide a water pipe cleaning device which can discharge the dirty washing water to the adjacent sewer through the drainage side and cover the opening portion of the round hole when the washing is completed, so that the maintenance can be performed very efficiently.

However, in the conventional technique, the inner wall of the pipe is cleaned by the cleaning brush 226 rotating in the circumferential direction, but the removal of adhered hardened foreign matter is not easy.

Patent 1: Korean Patent No. 10-1346585 Patent 2: Korean Patent Publication No. 10-2008-0040372

In order to solve the above problems, the present invention provides a scraper comprising rakers capable of scraping a wall surface of a pipe in an axial direction, thereby efficiently removing not only foreign substances deposited inside the pipe but also foreign substances adhered and hardened to the wall of the pipe To provide a tube cleaning device that can be removed.

Further, it is intended to provide a pipe cleaning apparatus capable of increasing or decreasing the diameter of the scraper, thereby cleaning the pipes of various diameters.

Also, by providing the scraper and the adjusting device on both sides of the center shaft, it is possible to clean the pipe cleaner freely while moving forward and backward, even when a lot of foreign matters are not adhered or fall off well.

A pipe cleaning apparatus according to an embodiment of the present invention includes a center shaft having a water supply path provided therein, the pipe cleaning apparatus including: a center shaft having a water supply path therein; A scraper installed on the central shaft to remove foreign matters adhered to the inside of the pipe; A nozzle installed on the central shaft for cleaning foreign matter adhered to the inside of the tube by extruding high pressure water; And a wheel attached to the center shaft and adapted to move the tube cleaning device to the inside of the tube and a wheel coupled to the spindle, wherein the scraper includes a plurality of rakes provided in a circumferential direction of the center shaft And each of the plurality of rakes is rotatably coupled to the central shaft, whereby the diameter of the scraper can be increased or decreased, thereby cleaning the tubes of various diameters.

The apparatus according to any one of the preceding claims, further comprising an adjustment device for adjusting the diameter of the scraper on the central axis, the adjustment device comprising a funnel inserted in the central axis and a tension strap for tensioning the funnel, The diameter of the scraper is increased and the diameter of the scraper is reduced by delaying the tension of the tension line.

The control device may further comprise a funnel inserted into the central shaft and a pressing means for moving the funnel forward and backward, And the diameter of the scraper is increased or decreased.

The scraper may be provided on both sides of the center shaft, and the adjusting device may be provided to correspond to a pair of scrapers provided on both sides of the center shaft, The diameter of the scraper positioned at the front of the pipe cleaning apparatus is increased and the diameter of the scraper located at the rear is reduced so that the pipe cleaning apparatus can freely reciprocate in the forward and backward directions and therefore, And can be cleanly removed.

Further, the nozzle may be rotated by high pressure water to be extruded.

In addition, the spokes are formed of two or more multi-stages, and a springs are provided in the springs, or by applying hydraulic pressure, the spokes can freely adjust the length of the spokes to fit the various diameters of the pipes, . ≪ / RTI >

The scraper and the adjusting device may be installed in multiple stages in the axial direction.

According to another aspect of the present invention, there is provided a pipe cleaning apparatus for removing a foreign matter admitted to the inside of a pipe inserted into a pipe, the pipe cleaning apparatus comprising: A scraper installed on the central shaft to remove foreign matters adhered to the inside of the pipe; And a wheel attached to the center shaft and adapted to move the tube cleaning device to the inside of the tube and a wheel coupled to the spindle, wherein the scraper includes a plurality of rakes provided in a circumferential direction of the center shaft Wherein each of the plurality of rakes is rotatably coupled to the central shaft so that the diameter of the scraper can be increased or decreased to clean the pipes of various diameters and the diameter of the scraper can be adjusted Wherein the adjusting device comprises a funnel inserted in the central shaft and a tensioning strap for tensioning the funnel, the diameter of the scraper increasing by tensioning the tensioning strap, the tension of the tensioning strap , The diameter of the scraper is reduced, and the scraper and the adjusting device are multi- As shown in FIG.

According to still another aspect of the present invention, there is provided a pipe cleaning apparatus for removing foreign matter admitted to the inside of a pipe inserted into a pipe, comprising: a center shaft; A scraper installed on the central shaft to remove foreign matters adhered to the inside of the pipe; And a wheel attached to the center shaft and adapted to move the tube cleaning device to the inside of the tube and a wheel coupled to the spindle, wherein the scraper includes a plurality of rakes provided in a circumferential direction of the center shaft Wherein each of the plurality of rakes is rotatably coupled to the central shaft so that the diameter of the scraper can be increased or decreased to clean the pipes of various diameters and the diameter of the scraper can be adjusted Wherein the adjusting device includes a funnel inserted in the central shaft and a pressing means for moving the funnel back and forth, the diameter of the scraper being increased or decreased by the pressing means, and the scraper And the adjusting device is installed in multiple stages in the axial direction.

The apparatus may further include a nozzle installed on the central shaft for cleaning foreign matter adhered to the inside of the pipe by extruding high-pressure water.

The present invention provides a scraper composed of rakes capable of scraping the wall surface of the pipe in the axial direction, thereby effectively removing not only the foreign matter deposited inside the pipe but also the foreign substances adhering to the pipe wall .

Further, since the diameter of the scraper can be increased or decreased, it is possible to provide an effect of cleaning the pipes of various diameters.

Further, by providing the scraper and the adjusting device on both sides of the center shaft, it is possible to provide a clean cleaning even when the foreign materials are not adhered to or detached from each other freely while moving forward and backward.

FIGS. 1A to 1C are a perspective view, a side view, and a front view, respectively, of a pipe cleaning apparatus according to an embodiment of the present invention.
FIG. 2 is a perspective view, a side view, and a front view showing a pipe cleaning apparatus according to another embodiment of the present invention. FIG.
3 is a perspective view showing an embodiment of an adjusting device according to an example of the present invention.
4 is a perspective view showing an embodiment of a wheel and a wheel according to an example of the present invention.
5 is a perspective view showing an embodiment of a nozzle according to an example of the present invention.
Figure 6 is a drawing of the prior art.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In the drawings, like reference numerals are used to refer to like elements throughout the drawings, even if they are shown in different drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the difference that the embodiments of the present invention are not conclusive.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, May be "connected "," coupled "or" connected ".

Hereinafter, a pipe cleaning apparatus according to an exemplary embodiment of the present invention will be described in detail with reference to the drawings.

The pipe cleaning apparatus according to an embodiment of the present invention is a pipe cleaning apparatus 20 for removing foreign matter admitted to the inside of the pipe 10 inserted into the pipe 10, A central axis 30; A scraper (40) installed on the central shaft (30) to detach a foreign substance adhered to the inside of the pipe (10); A nozzle 50 installed on the central shaft 30 for cleaning the foreign matter adhered to the inside of the pipe 10 by extruding high pressure water; A spindle 60 installed on the central shaft 30 for allowing the tube cleaning device 20 to move to the inside of the tube 10 and a wheel 62 coupled to the spindle 60 .

The central shaft 30 constitutes a central portion of the pipe cleaning apparatus 20, and a water supply passage may be provided therein. That is, the entire inside of the center shaft 30 may be used as a water supply passage, or a separate water supply pipe for supplying water may be provided inside the center shaft 30. Further, another pressure pipe may be provided inside the center shaft 30 to apply pressure to the pressing unit 75, which will be described later.

The material of the center shaft 30 may be any material as long as it is capable of supporting and supporting other structures provided on the center shaft 30 such as steel, plastic, and the like.

The scraper 40 is composed of a plurality of rakes 42 provided in the circumferential direction of the pipe 10 and scrapes the wall surface of the pipe 10 while moving in the axial direction of the pipe 10, It is possible not only to remove the accumulated foreign substances but also to adhere to the wall surface of the pipe 10 and to remove the cured foreign matters very effectively.

The rake 42 constituting the scraper 40 may be made of metal, plastic, rubber or the like. The entire rake 42 may be made of metal, plastic, rubber or the like, or the body may be made of plastic, The body may be made of metal, or the body may be made of metal, and the scraping part may be made of rubber, which may be different from the body and the scraping part. That is, the material of the rake 42 can be selected according to the type of the pipe 10 to be cleaned, the state of the pipe 10, the kind of the foreign matter to be cleaned, and the attachment state. In addition, the rake 42 can be detachably coupled to be used as a whole or by replacing a scratching portion.

The rake 42 provided in the circumferential direction of the central axis 30 is provided in multiple stages along the axial direction of the central axis 30 and the rake 42 provided in multiple stages is arranged in a zigzag manner, Can be scraped off without overlapping, so that it is possible to clean foreign substances deposited or adhered to the inside of the pipe 10.

The rake 42 constituting the scraper 40 is rotatably coupled to the central shaft 30 by a hinge so that the rake 42 can be easily applied to pipes having different diameters.

The center shaft 30 may further include an adjusting device 70 for adjusting the diameter of the scraper 40, that is, raising or lowering a plurality of rake wheels 42.

One example of the adjustment device 70 may include a funnel 72 inserted into the central axis 30 and a tension strap 73 straining the funnel 72. That is, the funnel 72 is installed on the inner side of the rake 42 provided in the circumferential direction of the central axis 30, that is, the central portion of the central axis 30 and the funnel 72 is tightened, By tensing towards the end of the central axis 30 to raise the diameter of the scraper 40 or by releasing the tension to lie down the rake 42 to reduce the diameter. Thus, by increasing or decreasing the diameter of the scraper 40, it is possible to effectively clean the tubes 10 of various diameters.

The rake 42 provided in the circumferential direction of the central axis 30 can be installed in multiple stages along the central axis 30 and at the same time the funnel 72 can be installed in multiple stages and also the tension rods 73 May be connected to each other between funnels 72 provided in multiple stages. In this way, when the straining line 73 is strained or delayed, the multi-stage funnel 72 is simultaneously tensed or delayed so that the multi-stage rake 42 is raised or laid down.

A spring or the like may be provided between the funnel 72 and the center shaft 30, and may be connected to the funnel 42 and the funnel 72 by a string or a ring. Accordingly, when the tension of the tension line 73 is released, the funnel 72 is moved inward by a spring or the like, and at the same time, the pulleys 42 are also moved inward to decrease the diameter.

Another example of the adjustment device 70 may include a funnel 72 inserted into the central axis 30 and a pushing means 75 for moving the funnel 72 back and forth. The pressurizing means 75 may be a plurality of pistons provided between the inside of the funnel 72 and the center shaft 30. That is, the diameter of the scraper 40 can be increased or decreased by operating the piston through the pressure pipe separately provided inside the central shaft 30. [ In this case, the funnel 72 and the rake 42 may be connected to each other by a string or a ring.

The scraper 40 and the adjusting device 70 may be provided on both sides of the center shaft 30, respectively. In other words, the scraper 40 and the adjusting device 70 may be installed in one pair at each side, two at a time, or three at a time.

Since the scraper 40 and the adjusting device 70 are provided on both sides of the scraper 40, the scraper 40 disposed in front of the scraper 40 is unfolded to clean the inside of the pipe 10, 40 may be folded so as to prevent the progress of the operation. Therefore, when there is a large amount of foreign matter adhered to the inside of the pipe 10, or if the pipe 10 is not firmly detached due to adhesion, the pipe cleaning apparatus 20 is moved backward while cleaning with the scraper 40 on the rear side, The pipe 10 can be cleaned by cleaning with the scraper 40 of the pipe 10.

That is, in the case of the prior art, if there is a large amount of foreign matter adhered to the inside of the pipe, or if the pipe is firmly adhered to the pipe, the pipe cleaning device should be advanced to the end and then introduced into the pipe , There is a problem that much time and effort are required for cleaning. The present embodiment can overcome the problems of the above-described prior art.

The nozzle 50 can be connected to the water supply passage of the central shaft 30 while being rotatably coupled to the central portion of the central shaft 30. [ That is, there is provided a rotating ring rotatably coupled to the central shaft 30, and a plurality of nozzles 50 are coupled to the rotating ring, so that the plurality of nozzles 50 are rotated in accordance with the rotation of the rotating ring, 10 can be cleaned.

The rotation of the rotary ring can be rotated by the rotation of the rotary ring itself or by the reaction of the sprayed water by forming the nozzle 50 in an inclined direction with respect to the diameter direction. That is, when the high pressure water is obliquely extruded on the inner wall of the pipe 10, the nozzle 50 can rotate in the opposite direction in which the high pressure water is extruded by the water pressure. Therefore, by rotating the nozzle 50, the entire portion of the tube 10 can be efficiently cleaned.

In addition, the spokes 60 are formed in two or more multi-stages, and the length of the spokes 60 can be adjusted by providing springs or by applying hydraulic pressure. Accordingly, the present embodiment is advantageous for cleaning tubes 10 of various diameters, and it is also possible to prevent the scraper 40 from touching the ground when moving the tube cleaning apparatus 20 from the outside of the tube 10, .

A pipe cleaning apparatus according to another exemplary embodiment of the present invention is a pipe cleaning apparatus 20 for removing foreign matter admitted to the inside of the pipe 10 inserted into the pipe 10, 30); A scraper (40) installed on the central shaft (30) to detach a foreign substance adhered to the inside of the pipe (10); A spindle 60 installed on the central shaft 30 for allowing the tube cleaning device 20 to move to the inside of the tube 10 and a wheel 62 coupled to the spindle 60, The scraper 40 is constituted by a plurality of rakes 42 installed in the circumferential direction of the center shaft 30 and each of the plurality of rakes 42 is rotatable So that the diameter of the scraper 40 can be increased or decreased to clean the tube 10 of various diameters and to adjust the diameter of the scraper 40 to the central axis 30 Wherein the adjustment device includes a funnel inserted into the central shaft and a tension strap for tensioning the funnel so that the tension strap 73 The diameter of the scraper 40 is increased and the tension of the tension line 73 is delayed, 40 is a reduced diameter of the scraper 40 and the adjustment device 70 may be characterized by being installed in multiple stages in the axial direction.

A pipe cleaning apparatus according to another embodiment of the present invention is a pipe cleaning apparatus 20 for removing impurities admitted to the inside of the pipe 10 inserted into the pipe 10, (30); A scraper (40) installed on the central shaft (30) to detach a foreign substance adhered to the inside of the pipe (10); A spindle 60 installed on the central shaft 30 for allowing the tube cleaning device 20 to move to the inside of the tube 10 and a wheel 62 coupled to the spindle 60, The scraper 40 is constituted by a plurality of rakes 42 installed in the circumferential direction of the center shaft 30 and each of the plurality of rakes 42 is rotatable So that the diameter of the scraper 40 can be increased or decreased to clean the tube 10 of various diameters and to adjust the diameter of the scraper 40 to the central axis 30 Wherein the adjusting device comprises a funnel inserted into the central shaft and a pressing means for moving the funnel forward and backward, 75, the diameter of the scraper 40 is increased by pressing the funnel 72, and by releasing the pressure And the diameter of the group scraper 40 is reduced, the scraper 40 and the adjustment device 70 may be characterized by being installed in multiple stages in the axial direction.

The two embodiments described above can be practiced without the nozzle 50. [ In this case, the nozzle 50 may be attached to a separate apparatus so that the tube cleaning apparatus 20 can first clean it, then go through it, and then enter it. In addition, the nozzle 50 may be added to the center shaft 30 as in the above-described embodiments.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all the constituent elements may be constituted or operated selectively in combination with one or more. Furthermore, the terms "comprises", "comprising", or "having" described above mean that a component can be implanted unless otherwise specifically stated, But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

10: tube
20: Pipe cleaning device
30: center axis
40: Scraper
42: rake
50: Nozzle
60: Spokes
62: Wheel
70: adjusting device
72: funnel
73: tension line
75: Pressurizing means

Claims (10)

delete 1. A pipe cleaning apparatus for removing foreign matter adhering to the inside of a pipe inserted into a pipe,
A center shaft having a water supply path therein;
A scraper installed on the central shaft to remove foreign matters adhered to the inside of the pipe;
A nozzle installed on the central shaft for cleaning foreign matter adhered to the inside of the tube by extruding high pressure water;
And a wheel installed on the central axis for coupling the pipe cleaning device to the inside of the pipe, and a wheel coupled to the spool,
Wherein the scraper comprises a plurality of rakes provided in a circumferential direction of the central axis,
Each of the plurality of rakes is rotatably coupled to the central shaft, so that the diameter of the scraper can be increased or decreased to clean the tubes of various diameters,
Further comprising an adjusting device for adjusting the diameter of the scraper on the central axis,
The adjustment device comprising a funnel inserted in the central axis and a tension strap for tensioning the funnel,
Wherein the diameter of the scraper is increased by tensioning the tension line and the diameter of the scraper is reduced by delaying tension of the tension line.
1. A pipe cleaning apparatus for removing foreign matter adhering to the inside of a pipe inserted into a pipe,
A center shaft having a water supply path therein;
A scraper installed on the central shaft to remove foreign matters adhered to the inside of the pipe;
A nozzle installed on the central shaft for cleaning foreign matter adhered to the inside of the tube by extruding high pressure water;
And a wheel installed on the central axis for coupling the pipe cleaning device to the inside of the pipe, and a wheel coupled to the spool,
Wherein the scraper comprises a plurality of rakes provided in a circumferential direction of the central axis,
Each of the plurality of rakes is rotatably coupled to the central shaft, so that the diameter of the scraper can be increased or decreased to clean the tubes of various diameters,
Further comprising an adjusting device for adjusting the diameter of the scraper on the central axis,
Wherein the adjusting device includes a funnel inserted into the central shaft and a pressing means for moving the funnel forward and backward,
And the diameter of the scraper is increased or decreased by the pressing means.
The method according to claim 2 or 3,
Wherein the scraper is constituted by a pair of scaffers respectively provided on both sides of the center shaft and the adjusting device is provided so as to correspond to a pair of scrapers respectively provided on both sides of the central axis, The diameter of the scraper located on the rear side of the scraper is reduced and the diameter of the scraper located on the rear side is reduced so that the pipe cleaning apparatus can freely reciprocate in the forward and backward directions and therefore can be cleanly removed Wherein the pipe cleaning device comprises:
The method of claim 4,
Wherein the nozzle is rotated by high pressure water to be extruded.
The method of claim 4,
The spokes are formed of two or more multi-stages, and the springs are provided inside or freely adjust the length of the spokes so as to fit the various diameters of the pipes by applying hydraulic pressure, so that the pipes of various diameters can be cleaned As shown in Fig.
The method of claim 4,
Wherein the scraper and the adjusting device are installed in multiple stages in the axial direction.
1. A pipe cleaning apparatus for removing foreign matter adhering to the inside of a pipe inserted into a pipe,
Center axis;
A scraper installed on the central shaft to remove foreign matters adhered to the inside of the pipe;
And a wheel installed on the central axis for coupling the pipe cleaning device to the inside of the pipe, and a wheel coupled to the spool,
Wherein the scraper comprises a plurality of rakes provided in a circumferential direction of the central axis,
Each of the plurality of rakes is rotatably coupled to the central shaft, so that the diameter of the scraper can be increased or decreased to clean the tubes of various diameters,
Further comprising an adjusting device for adjusting the diameter of the scraper on the central axis,
The adjustment device comprising a funnel inserted in the central axis and a tension strap for tensioning the funnel,
The tension of the tension line increases the diameter of the scraper and reduces the tension of the tension line, thereby reducing the diameter of the scraper,
Wherein the scraper and the adjusting device are installed in multiple stages in the axial direction.
1. A pipe cleaning apparatus for removing foreign matter adhering to the inside of a pipe inserted into a pipe,
Center axis;
A scraper installed on the central shaft to remove foreign matters adhered to the inside of the pipe;
And a wheel installed on the central axis for coupling the pipe cleaning device to the inside of the pipe, and a wheel coupled to the spool,
Wherein the scraper comprises a plurality of rakes provided in a circumferential direction of the central axis,
Each of the plurality of rakes is rotatably coupled to the central shaft, so that the diameter of the scraper can be increased or decreased to clean the tubes of various diameters,
Further comprising an adjusting device for adjusting the diameter of the scraper on the central axis,
Wherein the adjusting device comprises a funnel inserted into the central shaft and a pressing means for moving the funnel forward and backward,
The diameter of the scraper is increased or decreased by the pressing means,
Wherein the scraper and the adjusting device are installed in multiple stages in the axial direction.
The method according to claim 8 or 9,
And a nozzle installed on the central axis for cleaning the foreign substances adhered to the inside of the pipe by extruding high pressure water.

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