KR20090046586A - The paint injection apparatus of inside pipe wall - Google Patents

Abstract

The present invention relates to a paint spraying device for the inner wall of the pipe, and more particularly, a spray nozzle mounted on the spraying device that is movable inside the pipe is used to paint the inner wall of the pipe with an optimal thickness while maintaining a proper distance from the inner wall of the pipe. It relates to an injection device.

The present invention provides a paint spraying apparatus for spraying paint on an inner wall of a tube, the hollow rotating body including a rotating shaft in which paint is introduced therein and an injection unit formed to rotate and spray the paint introduced into one side of the rotating shaft, the rotating body It provides a paint spraying device of the inner wall of the tube including a power unit for driving so that the rotation and the frame to support the rotor and the power unit built-in.

Through the present invention, not only the welded pipe can be painted on the ground, but also after being buried underground, the inside of the pipe can be painted, and even in the presence of vibrations such as a motor, the inner wall of the pipe can be painted in a stable state, especially inside the pipe. Can be painted with stability even if it does not have a constant inner diameter or inclined. In addition, the present invention has an effect of forming a coating film having a constant thickness by spraying paint while maintaining an optimum distance with the inner wall of the tube.

Paint, spraying device, pipe, inner wall, rotating shaft, spraying part, spray nozzle

Description

The paint injection apparatus of inside pipe wall}

The present invention relates to a paint spraying device for the inner wall of the pipe, and more particularly, a spray nozzle mounted on the spraying device that is movable inside the pipe is used to paint the inner wall of the pipe with an optimal thickness while maintaining a proper distance from the inner wall of the pipe. It relates to an injection device. The present invention also relates to a paint spraying apparatus capable of coating paint even after washing the inner wall of the tube after a long time of use or even when the inner wall of the tube is bent and inclined.

In general, the inner wall of a metal pipe may be corroded when a fluid such as water flows. Also, in the case of a pipe or a pipe joint or a flange joint, a flange and a pipe joint are welded, and thus, especially in a welded part. Corrosion is likely to occur. Therefore, it is necessary to paint the inner wall of the pipe used to prevent corrosion of the inner wall of the pipe and to prolong the service life of the pipe. In addition, when the water pipe or sewage pipe is aged as the underground pipe, the pipe itself cannot be lifted to the ground, so it must be possible to spray paint while driving in the underground pipe.

Looking at the prior art, Japanese Patent Laid-Open No. 58-43265 describes the invention of a technique for detecting and painting a portion of an unpainted portion of a welded portion. The above description discloses a technology in which the meter reading operation is performed to paint the uncoated portion at the operation panel when the meter reading portion is uncoated. However, the above technique has a problem in that it is difficult to use in the case of underground pipes, because the pipe and the pipe to find and paint only the part connected by welding.

As another conventional technique, Japanese Patent Application Laid-Open No. 61-293571 describes a coating apparatus in which a coating material and a coating material curing agent are mixed and sprayed by an air motor. Since the coating device does not have its own power, it is difficult to form a coating film of a certain thickness because it must be pulled artificially. In addition, since it is injected through the injection hole or the injection slit, it is difficult to form a certain coating film when a part is blocked, and a problem in the coating film formation may occur even when the device is shaken due to the vibration of the motor. In addition, there is a problem that may not always be in a constant position inside the tube because there is no appropriate footing to prevent the vibration of the motor.

As a domestic prior art, there is a patent 391389. Patent No. 391389 also describes a device capable of painting a steel pipe and a portion to which the pipe is connected, and describes a device for finding and painting an unpainted portion, such as Japanese Patent Application Laid-Open No. 58-43265. . Therefore, Patent No. 391389 also has the same problem as the Japanese Patent Laid-Open No. 58-43265. In addition, since the scaffold is formed only at the lower end, the apparatus may not have a predetermined position in the tube, or may fall sideways in the tube if the apparatus does not have a constant position. In addition, there is a problem that it is difficult to elastically support the vibration of the motor. In addition, in the case of underground pipes, or after washing for a long time after use and painting, or if the bent inclined to form the inside of the pipe may not be constant, there may be a problem that the uniform coating is difficult to uniform application. In addition, there may be a problem that it may take a long time to apply the entire inside of the tube.

The present invention is to solve the problems of the prior art as described above, the main object of the present invention is to provide a paint spraying device capable of painting the welded pipe on the ground as well as the inside of the pipe after being buried underground. .

It is also an object of the present invention to provide a paint spraying apparatus capable of painting the inner wall of a tube in a stable state even when there is a vibration of a motor or the like.

It is also an object of the present invention to provide a paint spraying apparatus capable of painting the inner wall of a tube even when rust, scale or the like is removed.

In addition, an object of the present invention is to provide a paint spraying device that can be painted with stability even when the inside of the tube does not have a constant height or inclined.

It is also an object of the present invention to provide a paint spraying apparatus capable of spraying at an appropriate distance from the inner wall of a tube and forming a constant coating film.

In order to achieve the above object, the present invention provides a paint spraying apparatus for spraying paint on an inner wall of a pipe, the hollow shape including a rotating shaft in which paint is introduced therein and a spraying portion formed to rotate while spraying paint introduced to one side of the rotating shaft. It provides a paint spraying device of the inner wall of the pipe, characterized in that it comprises a rotating body, a power unit for driving the rotation of the rotating body and a frame supporting the rotating body and the power unit built-in.

Paint supply means for supplying paint into the rotating shaft may be further included, the rotating body may further comprise a swivel connected to the paint supply means.

The paint spraying device may further include a towing means for towing a frame containing the rotating body and the power unit, the towing means is built in a motor to pull the rope and the rope connected to the frame at a constant speed It can consist of a rope reel.

The power unit may be composed of a motor and a power transmission unit for transmitting the power by the motor to the rotating body, the power transmission unit is composed of a gear device which is mounted to the motor and the rotating body to rotate respectively, or the motor And a chain gear device mounted on the rotating body, respectively, connected by a chain and rotating together.

The frame may be coupled to the guide portion formed in an arc-shaped contact surface with the inner wall of the tube to smoothly move in the inner wall, the guide portion for elastic coupling with the frame to move elastically even if the inner diameter of the tube is not constant It may further include an elastic means. In addition, the frame may further include a support cover into which one end of the guide part is inserted such that the guide part is supported without shaking.

The injection unit may be formed with a plurality of mounting holes on the outside, the injection pipe is connected to each of the mounting holes and the injection nozzle may be formed on the other side of the injection pipe, the mounting hole may be formed of two to four, The injection pipe may be formed such that the side on which the injection nozzle is formed is wider than the side connected to the mounting hole.

The length of the injection pipe may be configured differently to form different positions of the injection nozzles formed in the respective injection pipes, and the injection direction of the injection nozzles formed in the respective injection pipes may be configured as the center direction of the pipe. Can be.

The present invention can not only paint the welded pipe on the ground, but also the inside of the pipe after being buried underground.

In addition, the present invention has the effect of coating the inner wall of the tube in a stable state even when there is vibration such as a motor.

In addition, the present invention has the effect of coating the inner wall of the pipe after removing rust, scale and the like.

In addition, the present invention has the effect that can be painted with stability even when the inside of the tube does not have a constant inner diameter or inclined.

In addition, the present invention can be sprayed at an appropriate distance from the inner wall of the tube, and has the effect of forming a constant coating film.

In addition, the present invention has the effect of forming a coating film of a constant thickness by spraying the paint while maintaining the optimum distance to the inner wall of the tube.

With reference to the accompanying drawings will be described in detail the paint spraying device of the inner wall of the tube according to the present invention.

1 is an overall perspective view of a paint injector of the inner wall of the tube according to the present invention, Figure 2 is an exploded perspective view of a paint injector of the inner wall of the tube according to the present invention. As shown, the paint spraying device of the inner wall of the tube according to the present invention is composed of a rotating body 100, the power unit 200, the frame 300.

The internal structure of the rotating body 100 is formed in a hollow shape, specifically, the spray is formed while rotating the paint introduced and formed on one side of the rotating shaft 120 and the rotating shaft 120 of the hollow shape in which the paint is introduced and rotated It consists of a hollow injection portion 140.

In this embodiment, the rotary shaft 120 and the injection unit 140 of the rotating body 100 are configured in one piece, but it may be possible to separately separate the fabrication.

The rotating shaft 120 of the rotating body 100 rotates and at the same time serves to supply the paint introduced into the injection unit 140.

Figure 3 shows a detailed cross-sectional view of the injection portion, Figure 4 is a front view of the injection portion viewed from the injection nozzle side, Figures 5a, 5b is an operating state diagram of the injection portion of the paint injection device in the inner wall of the tube according to the present invention.

The injection unit 140 has a plurality of mounting holes 141 are formed on the outside, the injection pipe 144 is connected to each of the mounting holes 141, respectively, and the injection nozzle (2) on the other side of the injection pipe 144 145 may be formed. It is also possible to directly connect the mounting hole 141 and the injection pipe 144, it is preferable that the nipple 142 and the nipple 142 is connected to the mounting hole 141 as shown The injection pipe 144 and the mounting hole 141 are connected to each other through an on / off valve 143.

In the illustrated injection part 140 has three mounting holes 141, but the mounting holes 141 may be formed of two to four, in two cases are installed in the direction of 180 degrees, three If the case is installed in the direction of 120 degrees, four cases may be installed in the direction of 90 degrees. The opening and closing valve 143 controls the opening and closing of the valve, when the injection pipe 144 is configured with a plurality of injection part of the injection pipe 144 is installed in the standby state (standby), the remaining injection pipe (standby) 144 to spray. Of course, all the spray pipes 144 may be used to form a thick paint on the inner wall of the pipe.

As shown, the injection pipe 144 may be formed such that the side on which the injection nozzle 145 is formed is wider than the side connected to the mounting hole 141. In other words, the injection nozzle 145 side is farther from the central axis X than the mounting hole 141 on the basis of the virtual axis X passing through the rotation axis 120 of the rotating body 100 shown in FIG. 5A. The distance from the central axis (X) should be appropriately adjusted according to the diameter size of the inner wall of the tube.

The injection direction of the injection nozzles 145 formed in the respective injection pipes 144 is directed toward the center of the inside of the pipe as shown in FIG. 5B. This is to maximize the texture of the paint sprayed on the inner wall of the pipe from the spray nozzle 145 by maintaining the distance (L) between the spray nozzle 145 and the inner wall of the pipe at least 30 cm. If the distance from the injection nozzle 145 to the inner wall is not maintained at a minimum distance of 30 cm and paint is sprayed closer, the strength of the paint sprayed from the injection nozzle 145 is too strong to splash or form a lump of paint. It can be said to be a configuration to compensate for the difficulty of forming a certain thickness and the texture of the paint sprayed on the inner wall to a certain thickness.

In addition, different lengths of the respective injection pipes 144 are formed so as to form different positions of the injection nozzles 145 formed on the other side of each of the plurality of injection pipes 144 mounted to make the thickness of the inner wall as thick as possible. Can be configured. Through this, the paint spraying device moves the inner wall of the pipe, and a plurality of spray nozzles 145 repeatedly spray a predetermined position of the inner wall of the pipe at a time difference, so that the paint on the inner wall of the paint is applied rather than spraying the paint at a predetermined position at a time. As the spraying state becomes dense, there is an effect of forming a coating film of a certain thickness.

The power unit 200 provides power to drive the rotating body 100 is rotated. The power unit 200 is composed of a motor 220 and a power transmission unit 240, 240 'for transmitting the power by the motor 220 to the rotating body 100 to drive the paint spraying device. Although not shown in addition to the motor 220, the power unit 200 may be configured by adding a speed reducer or a transmission.

6 is a perspective view showing a first embodiment of the power transmission unit of the paint spraying device of the inner wall of the tube according to the present invention, as shown, the power transmission unit 240 is a motor 220 and the rotating body (100) It is composed of a gear device that is mounted to each of the meshing and rotating. The power transmission unit 240 receives the rotational force from the motor 220, the first driving gear 241 and the second driving gear 242, respectively, in order to transfer the rotational force to the rotating body 100, the rotating body 100 It is configured to be mounted on the rotary shaft 120 and the rotary shaft 221 of the motor 220. That is, the rotational force transmitted from the motor 220 is the second driving gear mounted on the rotation shaft 120 of the rotating body 100 through the first drive gear 241 mounted on the rotation shaft 221 of the motor 220 ( The rotating body 100 rotates while being transmitted to 242.

7 is a perspective view showing a second embodiment of the power transmission unit of the paint spraying device of the inner wall of the tube according to the present invention, the power transmission unit 240 'is a motor 220 and the rotor 100 ) Are each mounted to the chain gear device which is connected to each other by the chain (243 ') and rotates together. More specifically, the first chain gear 241 ′ is mounted on the rotating shaft 221 of the motor 220, and the second chain gear 242 ′ is mounted on the rotating shaft 120 of the rotating body 100, thereby providing a chain 243. Configured to be connected by '). Therefore, as the motor 220 rotates, the first chain gear 241 'rotates, and the second chain gear 242' connected by the chain 243 'rotates together to rotate the rotor 100. ) Will rotate.

The frame 300 is formed in a three-dimensional shape and the outer wall may be made of a metal or synthetic resin material, and is configured to support the rotor 100 and the power unit 200 therein, and to support the inside of the frame 300. The front body of the rotating body 100 is mounted, the through shaft 310 for supporting the rotating shaft 120 of the rotating body 100 is inserted and rotated is formed. The through passage 310 may be configured by separately installing a hollow park cylinder or the like on the front surface of the frame 300 or by manufacturing a frame 300 in which the through passage 310 is formed integrally with a mold. In addition, a shaft bearing (not shown) may be mounted in the through passage 310 to support the rotating shaft 120.

A partition plate 320 is installed on the rear portion of the frame 300 so that the motor 220 is embedded therein, and the partition plate 320 has a through hole formed therein so that the rotation shaft 221 of the motor 220 penetrates. The central portion of the frame 300 is connected to the rotating shaft 221 of the motor 220, the power transmission unit 240, 240 'for transmitting the rotational force is configured to be located.

Figure 8 is an exploded perspective view of the guide portion of the paint spraying device of the inner wall of the tube according to the present invention.

The frame 300 may be further coupled with a guide portion 400 which is formed in an arc-shaped contact surface with the tube wall to reduce friction with the tube wall so as to smoothly move the paint spraying device from the inner wall of the tube. Can be. The guide unit 400 may be formed of three to four, three may be installed in the direction of 120 degrees, four may be installed on the side of the frame 300 in the 90 degree direction. The guide part 400 is elastic to elastically couple with the frame 300 so that the wheel part 410 moves elastically even when the wheel part 410 sliding in contact with the pipe inner diameter and the pipe inner diameter are not fixed. Means 420 may be further included, such as springs or rubber.

The elastic means 420 allows the wheel part 410 to move elastically even when the inner diameter of the tube is not constant or when the inside of the tube is inclined. As shown, when the wheel part 410 of the frame 300 and the guide part 400 are bolted together, the wheel part 410 may move by loosening the nut 440 of the upper part fastened to the bolt 430 slightly. It can be adapted to move elastically in the tube bore by giving a certain tolerance. In other words, it is possible to apply elasticity even if the inner diameter of the tube is not constant.

In another method, the two ends of the elastic means 420 may be directly welded to or bonded to the wheel part 410 and the frame 300 without attaching a bolt and a nut, and may be configured to elastically move.

The frame 300 may further include a support cover 330 into which one end of the wheel part 410 is inserted such that the guide part 400 is supported without shaking. The support cover 330 is configured to be attached to the frame 300 by welding or screwing such that the pair of panels at intervals to insert the wheel portion 410 and the wheel through the insertion grooves formed in the panel spacing One end of the portion 410 is configured to be inserted and supported. Through this configuration, the guide unit 400 can be stably operated because the shaking can be supported, especially when the inner wall of the tube is not constant.

In the present invention, paint is continuously supplied by supplementing the amount of paint filled in the towing means 500 and the rotating body 100 to pull the frame 300 in which the rotating body 100 and the power unit 200 are built. Paint supply means 600 may be further included.

The towing means 500 is configured to draw and pull the rope 510 connected to the frame 300, preferably the rope 510 has a rope reel 520 to pull the rope 510 In addition, the rope reel 520 is configured to pull the rope 510 at a constant speed is built in a motor (not shown) therein to make a constant spray amount of the paint sprayed on the inner wall when the paint is sprayed The thickness of the inner wall of the pipe can be made constant.

The paint supply means 600 may include a paint supply hose 610, a hose reel 620 winding the paint supply hose 610, and a paint supply unit 630 in which paint is stored. The paint supply hose 630 is connected to the side of the rotating shaft 120 of the rotating body 100 to supply the paint of the paint supply unit 630. In this case, however, when the rotating shaft 120 of the rotating body 100 rotates, the paint supply hose 610 connected thereto rotates together, causing a kink phenomenon.

To prevent this, a swivel 640 having one side connected to the side of the rotating shaft 120 may be mounted, and a configuration for connecting the paint supply hose 610 to the other side of the swivel 640 may be added. The swivel is a mechanical element configured so that the other side is not affected by the rotational movement even if one side is rotated on both sides connected to the other element.

9 is a perspective view showing a method of connecting the rotating shaft of the paint supply means and the rotating body of the paint spraying device of the inner wall of the tube according to the present invention through a swivel.

Referring to the operation of the paint spraying device of the inner wall of the tube according to an embodiment of the present invention configured as described above are as follows.

10 is a state diagram used of the paint spraying device applied to the underground pipe. However, the paint spraying device is possible not only for underground pipes but also for ground pipes.

The paint injector in this figure includes a tow means 500 with a motor (not shown) built therein to move at a constant speed, and shows that the paint supply means 600 for supplying paint is also connected. have. Since the paint supply hose 610 needs to be wound by the hose reel 620, the hose reel 620 is illustrated together.

As shown in the drawing, the rope reel 520 and the hose reel 620 are configured in one piece, but each of them may be configured as a separate type.

The motor 220 of the power unit 200 of the paint spraying device rotates first. When the motor 220 rotates, the rotating body 100 is rotated by the power transmission units 240 and 240 ', and the paint flowing into the rotating shaft 120 is sprayed while the rotating body 100 rotates. In addition, the paint is continuously supplied to the rotating body 100 through the paint supply hose 610. When the paint is supplied, the paint supply hose 610 to prevent the twisting of the rotation shaft 120 to prevent the swivel ( 640. The rotating shaft 120 can freely rotate due to the mounting of the swivel 640, and can prevent the paint supply hose 610 from being twisted.

The paint passing through the rotating shaft 120 of the rotating body 100 is collected in the injection unit 140, the paint is sprayed to the injection nozzle 145 through the injection pipe 144 at a predetermined pressure. Since the injection nozzles 145 have different lengths of the injection pipes 144, the injection nozzles 145 are jetted toward the center direction of the pipes at different heights, so that the injection nozzles 145 closely spray the paint on the inner wall of the pipe at an optimum distance from the inner wall of the pipe. It is formed to be.

In addition, the paint 300 is uniformly and evenly sprayed on the whole along the longitudinal direction of the inner wall of the tube by the traction means 500 connected to the frame 300 towing at a constant speed.

In addition, the paint spraying can be slid by the guide portion 400 coupled to the frame 300, and the elastic means 410 elastically even when the inner wall of the tube is not constant or inclined tube It is movable and is operated while being stably supported by the support cover 330.

As described above, in the detailed description of the present invention, the paint spraying apparatus of the inner wall of the pipe of the present invention has been described with reference to specific embodiments, but various modifications are possible without departing from the scope of the present invention. It is self-evident for those who have it.

1 is an overall perspective view of the paint spraying device of the inner wall of the tube according to the present invention.

Figure 2 is an exploded perspective view of the paint spraying device of the inner wall of the tube according to the present invention.

3 is a cross-sectional view of the spraying unit of the rotating body of the paint spraying device of the inner wall of the tube according to the present invention.

Figure 4 is a front view of the spraying portion of the paint spraying device of the inner wall of the tube according to the present invention.

5A and 5B are operation state diagrams of the spraying unit of the paint spraying device of the inner wall of the tube according to the present invention.

6 is a perspective view showing a first embodiment of the power transmission unit of the paint spraying device of the inner wall of the tube according to the present invention.

7 is a perspective view showing a second embodiment of the power transmission unit of the paint spraying device of the inner wall of the tube according to the present invention.

Figure 8 is an exploded perspective view of the guide portion of the paint spraying device of the inner wall of the tube according to the present invention.

9 is a perspective view showing a method of connecting the paint supply device and the rotating body of the paint spraying device of the inner wall of the pipe through the swivel according to the present invention.

10 is a state diagram of use of the paint spraying device of the inner wall of the tube according to the present invention.

* Explanation of symbols for main parts of the drawings

100: rotating body 120: rotating shaft

140: injection unit 141: mounting hole

142: nipple 143: on-off valve

144: injection pipe 145: injection nozzle

200: power unit 220: motor

240, 240 ': Power transmission unit 241: First drive gear

242: second drive gear 241 ': first chain gear

242 ': 2nd Chain Gear 243': Chain

300: frame 310: through passage

320: partition plate 330: support cover

400: guide portion 410: wheel portion

420: elastic means 500: traction means

510: rope 520: rope reel

600: paint supply means 610: paint supply hose

620: hose reel 630: paint supply

640: swivel

Claims (16)

In the paint injector for spraying paint on the inner wall of the tube, A hollow rotating body including a rotating shaft through which paint is introduced and an injection unit formed to rotate while spraying the paint introduced into one side of the rotating shaft; A power unit for driving the rotating body to rotate; And A frame supporting the rotating body and the power unit in a built-in manner; Paint injector of the inner wall of the pipe, characterized in that configured to include. The method of claim 1, And a paint supply means for supplying paint into the rotating shaft. The method of claim 2, The rotating body further comprises a swivel connected to the paint supply means is a paint spraying device of the inner wall of the pipe. The method of claim 1, Paint injector of the inner wall of the pipe further comprises a towing means for towing the frame containing the rotor and the power unit. The method of claim 4, wherein The towing means is a paint spraying device of the inner wall of the pipe, characterized in that consisting of a rope connected to the frame and a rope built-in motor to pull the rope at a constant speed. The method of claim 1, The power unit is a paint spraying device of the inner wall of the pipe, characterized in that consisting of a motor and a power transmission unit for transmitting the power by the motor to the rotating body. The method of claim 6, The power transmission unit is a paint spraying device of the inner wall of the pipe, characterized in that consisting of a gear device which is mounted to the motor and the rotating body, respectively engaged and rotated. The method of claim 6, The power transmission unit is a paint spraying device of the inner wall of the pipe, characterized in that consisting of a chain gear device which is mounted to each of the motor and the rotating body is connected by a chain and rotate together. The method of claim 1, The frame is a paint spraying device of the inner wall of the tube, characterized in that the guide portion is formed in an arc-shaped contact surface with the inner wall of the tube to smoothly move in the inner wall of the tube. The method of claim 9, Wherein the guide portion paint injection device of the inner wall of the tube further comprises an elastic means for elastically coupled with the frame to move elastically even if the inner diameter of the tube is not constant. The method of claim 9, The frame is a paint spraying device of the inner wall of the pipe further comprises a support cover is inserted into one end of the guide portion so that the guide portion is supported without shaking. The method of claim 1, The spraying unit is formed with a plurality of mounting holes on the outside, the injection pipe is connected to each of the mounting holes and the injection nozzle of the inner wall of the pipe, characterized in that the injection nozzle is formed on the other side of the injection pipe. The method of claim 12, Paint mounting device of the inner wall of the pipe, characterized in that formed in two to four holes. The method of claim 12, The spray pipe is a paint spraying device of the inner wall of the pipe, characterized in that the side formed with the injection nozzle is formed to be wider than the side connected to the mounting hole. The method of claim 12, Paint injectors of the inner wall of the pipe, characterized in that the length of the injection pipe is configured differently so as to form different positions of the injection nozzles formed in the respective injection pipe. The method of claim 12, And a spraying direction of the spraying nozzles formed in the respective spraying pipes in the center direction of the pipes.

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