KR100771947B1 - Dual painting apparatus for inner suface of pipe - Google Patents

Abstract

A multistage spraying device for the inside of a pipe is provided to spray paints with different viscosity and hardening time through front and rear nozzles and to reduce the manufacturing cost by rotating two nozzles by using a wheel instead of a motor. In a multistage spraying device for the inside of a pipe, a body(100) comprises wheels(110) installed at both sides to move back and forth smoothly in the pipe and vertically adjusted by a height adjusting plate(120) and a worm(140) connected to the wheels by a belt(130) and shaft-combined inside to transmit rotating power. A shaft(200) is shaft-combined through the center of the body and composed of a swivel(210) installed at the front side to receive paints from the outside; a ring(220) installed at the front end to connect a rope(230); front and rear nozzles(250a,250b) disposed at the rear side to spray the paints supplied at regular intervals of time; and a worm wheel(260) installed in the middle and rotated by engaging with the worm. A camera(300) is joined to the rear end of the body to monitor the spray of the paint from the front and rear nozzles in the pipe. A winch pulls the rope connected to the ring of the shaft at constant speed. A paint supply tank uniformly feeds the stored paint through hoses(520a,520b) connected to the swivel of the shaft.

Description

Dual painting apparatus for inner suface of pipe}

1 is a front sectional view showing a multi-stage injection apparatus in a pipe to which the present invention is applied.

Figure 2 is a plan sectional view showing a multistage injection apparatus in a pipe to which the present invention is applied.

Figure 3 is a side cross-sectional view showing a multi-stage injection apparatus in a pipe to which the present invention is applied.

Figure 4 is an enlarged view of the main portion of the multi-stage injection apparatus in the pipe to which the present invention is applied.

Figure 5 is a state diagram showing the multi-stage injection apparatus in the pipe to which the present invention is applied.

Figure 6 is a front view showing another embodiment of the multi-stage injector in the pipe to which the present invention is applied.

7 is a state diagram used in Figure 6 applied.

[Description of Symbols for Main Parts of Drawing]

10: pipe 20: guide roller

100: main body 110: wheels

120: height adjustment 130: belt

140: worm 150: opening and closing lid

200: shaft 200a, 200b: upper and lower shaft

210: swivel 220: ring

230: rope 240: bend

250a, 250b: Front and rear nozzles 260: Worm wheel

300: camera 400a, 400b: winch

500: paint supply tank 520a, 520b: hose

600: intermediate support 610: body

620a, 620b: front and rear hooks 640a, 640b: paint storage tank

680: wire inlet 660a, 660b: on-off valve

The present invention relates to a multistage injector in a pipe for painting inside a pipe.

In general, after the removal of foreign matter on the inner surface of the pipe, such as sewage pipes, water pipes or power transmission pipes, it is preferable to paint to prevent the rust on the inner surface of the pipe.

However, according to the conventional injector for painting the inner surface of the pipe there are various problems as follows.

First, since the conventional injector is a one-stage spraying method in which paint is sprayed with one nozzle, there is a problem in that even painting is not performed. In other words, the conventional injector not only thickly overlaps with one nozzle as it spirally paints the inner surface of the pipe, but also overlaps the thickened lower part than the upper part because the thickened paint flows down as the curing time is delayed. Phenomenon occurs.

In addition, since the conventional injector is operated by self-propelled type, there is a problem that the size or length of the pipe or the foreign matter are considerably restricted. In other words, the conventional injector can only be used in pipes with a diameter of 400 mm or more because it is inevitably bulky while installing a driving motor therein, and the working distance is 50 m because it must be advanced while pushing wires or hoses connected by its own power. Extremely limited inside and out.

In addition, the conventional self-propelled injector has a number of inconveniences, such as when the foreign matter remains in the pipe, the wheel may not work without stopping over it.

The present invention has been made in order to solve the above problems, and a main object thereof is to provide a multistage injector in which a spray of even paint is made on the inner surface of a pipe through two-stage spraying in which two nozzles are rotated before and after.

Another object of the present invention is to provide a multi-stage injector in a pipe that allows spraying paint having different viscosity and curing time through two nozzles before and after.

 Another object of the present invention is to provide a multi-stage injector in the pipe to enable a smooth operation without regard to the working distance, while also being able to smoothly work on pipes from small diameter to large diameter.

In order to achieve the above object, the present invention is a device for painting the inner surface of the pipe, the wheel is formed on both sides so as to smoothly move forward and backward in the pipe, the wheel is raised by the height adjuster It is formed to adjust the height, and the inside is connected to the wheel and the belt body axially coupled to the worm to transmit the rotational force without force; Shaftly coupled through the center of the main body, the front is formed to receive paint from the outside through a swivel, while forming a ring for connecting the rope at the front end, and sprays the pate supplied at a certain interval at the rear A shaft formed with a worm wheel so as to rotate through engagement with the worm in the middle: a state in which paint sprayed through the front and rear nozzles is painted on the inner surface of the pipe to be connected to the rear end of the main body; A camera for monitoring the camera; A winch formed to draw a rope connected to a ring at the front end of the shaft at a constant speed; And a paint supply tank configured to constantly supply the stored paint through the hose connected to the swivel of the shaft.

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At this time, the shaft is composed of the upper and lower double pipes so as to be supplied to the front and rear nozzles, respectively, while a pair of hoses from the paint supply tank are connected to the swivel, respectively, to uniform the upper and lower double pipes of the shaft. It is formed so that pressure paint supply is made.

In addition, the front end of the main body further comprises an intermediate support, the intermediate support is formed in the longitudinal direction of the body, the body and the paint storage connected to the swivel of the shaft in the rear and the paint supply tank in the front and the hose A rear ring formed at the rear of the body to be connected by a tank, a ring formed at the front of the shaft and a rope, a front ring formed at the front of the body to be connected to a rope towed by the winch, and the paint It is made to include an opening and closing valve coupled to the front end of the storage tank to be formed to block the paint supplied from the paint supply tank and the wire inlet for entering the wire for the camera operation is formed in the longitudinal direction, the long distance In order to deliver a constant pressure and capacity when spraying STE can be incorporated into a storage tank.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a front sectional view showing a multi-stage injection apparatus in a pipe to which the present invention is applied, FIG. 2 is a cross-sectional plan view showing a multi-stage injection apparatus in a pipe to which the present invention is applied, and FIG. 3 is a multi-stage injection apparatus in a pipe to which the present invention is applied. One side cross-sectional view, Figure 4 is an enlarged view of the main portion of the multi-stage injection apparatus in the pipe to which the present invention is applied, Figure 5 is a state diagram showing the multi-stage injection apparatus in the pipe to which the present invention is applied.

The multi-stage injector in the pipe of the present invention is largely composed of the main body 100, the shaft 200, the camera 300, the winch 400 and the paint supply tank 500 as shown in FIG.

Thus, the main body 100 is to form a wheel 110 on both sides so as to smoothly move forward, backward in the pipe 10, the wheel 110 has a height up and down by the height adjuster 120 Form to be controlled. That is, the wheel 110 is mounted on the height adjuster 120 in a state of being inserted into the bracket groove of the main body 100, and then tightened with a bolt to adjust the height of the wheel 110 to increase the diameter from the large diameter pipe. Seamless painting can be achieved up to this small diameter pipe.

In addition, the worm 140 is axially coupled to the main body 100 by connecting the wheel 110 and the belt 130 to transmit the rotational force to the shaft 200. That is, by using the worm 140 to rotate the shaft 200 to be described later by the rotational force driven by the main body 100. Of course, when the present invention is largely formed to be applied to large diameter pipes by installing an electric motor therein can be made to drive the wheel 110 and the rotation of the shaft 200 through this. At this time, the configuration of the worm 140 and the worm wheel 260 to be described later are not required. On the other hand, the main body 100 preferably forms an opening and closing lid 150 thereon.

The shaft 200 axially penetrates through the center of the main body 100, and allows a smooth supply of paint from the paint supply tank 500 through the swivel 210 in the front. That is, the swivel 210 is configured to supply paint of a uniform pressure through a hose connected from the paint supply tank 500 while the shaft 200 continuously rotates. At this time, the front end of the shaft 200 exposed to the front of the swivel 210 forms a ring 220 for connecting the rope 230.

In addition, the rear of the shaft 200 is formed with front and rear nozzles 250a and 250b for spraying the supplied paint at a predetermined interval. In this case, in order to form the front and rear nozzles 250a and 250b, the front and rear nozzles 250a and 250b protrude therefrom while the “U” -shaped bent portion 240 is formed on the shaft 200. It is preferable. That is, commercially available nozzles cannot be applied to small-diameter pipes because their rotation radius increases when they are eccentrically coupled to straight shafts because they are long or large in size. Therefore, it is preferable to form a bent portion 240 having a “U” shape so that the rotation radius of the nozzle can be reduced and applied to a small diameter pipe.

 As a preferred embodiment of the configuration of the shaft 200, as shown in FIG. 4, the upper and lower shafts divided into upper and lower shafts 200a and 200b are respectively supplied to the front and rear nozzles 250a and 250b. On the other hand, a pair of hoses (520a, 520b) from the paint supply tank 500 is connected to the swivel 210, respectively, to provide a uniform pressure paint supply to the upper and lower double pipe of the shaft 200 To lose.

Accordingly, the shaft 200 may spray different kinds of paints having different functions, viscosity, and curing time through the front and rear nozzles 250a and 250b of the divided upper and lower shafts.

That is, by spraying the paint 1,2 stages having different viscosity and curing time through the front and rear nozzles 250a and 250b, a thick paint layer can be formed without flowing down. In other words, by controlling the amount of hardening through the front nozzle as quickly as possible for uniformly thick painting without falling into the pipe 10, and then sprayed through the rear nozzle at intervals so that the first sprayed paint does not flow down.

In particular, since the first and second stages of spraying are performed through the front and rear nozzles 520a and 520b, the painting may be closely performed. That is, by adjusting the interval in consideration of the injection size and angle of the front and rear nozzles (250a, 250b), a uniform paint can be made without gaps.

In addition, since the front and rear nozzles (250a, 250b) is formed in a crescent shape, the connection portion of the paint is maintained in a constant thickness during the spiral spraying process can be evenly sprayed by preventing the falling and falling phenomenon. .

Meanwhile, a worm wheel 260 is formed in the middle of the shaft 200 such that the shaft 200 rotates through engagement with the worm 140. That is, when the wheel 110 is driven while the main body 100 is towed by the rope 230, the rotational force is transmitted to the worm 140 and the worm wheel 260, and the transmitted force causes the shaft 200 to rotate. do.

The camera 300 is coupled to the rear end of the main body 100 to monitor the paint sprayed through the front and rear nozzles 250a and 250b to be painted on the inner surface of the pipe 100. In this case, since there is no radio interference factor inside the main body, the camera (CCTV) image is clear and better management of the work is performed.

The winches 400a and 400b are formed to draw a rope 230 connected to the ring 220 in front of the shaft 200 at a constant speed. Therefore, the winch is preferably configured to configure the upper and lower two-stage variable winch to maintain a constant traction speed.

That is, the lower winch 400a is formed so that the rope 230 does not loosen only by pulling force, and the upper winch 400b binds the starting point of the rope 230 and then rotates opposite to the lower winch 400a. To be made. Therefore, the upper winch 400b is variably rotated to pull the rope 230 while pulling the speed uniform. In addition, in order to work long distance, it is desirable to install a brace ring or to attach a wheel so as to be able to fix the winch in a large diameter to enable mobility.

The paint supply tank 500 is configured to supply paint of a constant pressure to the shaft 200 through a pair of hoses 520a and 520b connected to the swivel 210. That is, by connecting the pair of hoses 520a and 520b connected from the paint supply tank 500 to the upper and lower portions of the swivel 210, respectively, to the upper and lower shafts 200 of the double pipe form, each of which has a smooth and constant pressure. Allow paint supply.

On the other hand, the present invention is possible in the following embodiments.

Figure 6 is a front view showing another embodiment of a multi-stage injection apparatus in a pipe to which the present invention is applied, Figure 7 is a state diagram used in Figure 6 applied.

In the multi-stage injector in the pipe of the present invention, as described above, the forward operation is performed by pulling the rope 230 and the hoses 520a and 520b in the state installed inside the pipe 10. Therefore, when the injector moves long distance into the pipe 10, the intermediate support 600 is further configured to prevent the twisting of the long drawn rope 230 and the hoses (520a, 520b) and smooth operation.

At this time, the intermediate support 600 forms the front and rear rings 620a and 620b for connecting the rope 230 before and after the body 610 to serve as a heavy weight, and The lower side forms the paint storage tanks 640a and 640b for storing a predetermined amount of paint therein while connecting the hoses 520a and 520b before and after, and is coupled to the front ends of the paint storage tanks 640a and 640b. Opening and closing valves 660a and 660b for blocking the supplied paint are formed, and the wire inlets 680 for introducing wires for operating the camera 300 are configured.

Therefore, the present invention not only prevents the rope 230 or the hoses 520a and 520b from being twisted by the weight of the intermediate support 600, and also the main body by curling the rope 230 or the hoses 520a and 520b. Prevents 100 from moving forward more than necessary.

According to the multi-stage injector in the pipe of the present invention as described above, by spraying the paint evenly on the inner surface of the pipe through the two-stage spraying the two nozzles before and after, the efficiency and reliability of the work is greatly improved Useful effect is exerted.

In addition, by partitioning the shaft up and down to enable the injection of the paint having a different viscosity and curing time through the two nozzles before and after, a very useful effect of thickening the thickness of the paint is exerted.

In addition, by spraying the two nozzles before and after the rotation using only a wheel without using an electric motor, a very useful effect that can reduce the size and production cost of the product is exhibited.

Furthermore, the uniform forward and backward operations are performed by the winch and the intermediate support installed on the outside, thereby exerting a very useful effect that enables more stable and smooth operation.

Claims (3)

In the apparatus for painting the inner surface of a pipe, Wheels are formed on both sides to smoothly move forward and backward in the pipe, and the wheels are formed to adjust the height of the upper and lower sides by the height adjusters, and the worm is connected to the wheels and the belt to transmit the rotational force therein. A shaft coupled body; Shaftly coupled through the center of the main body, the front is formed to receive paint from the outside through the swivel, while forming a ring for connecting the rope at the front end, and the front for spraying the paint supplied at a certain interval in the rear A shaft having a rear nozzle, the middle having a worm wheel configured to rotate through engagement with the worm; A camera coupled to the rear end of the main body for monitoring a state in which paint sprayed through the front and rear nozzles is painted on the inner surface of the pipe; A winch formed to draw a rope connected to a ring at the front end of the shaft at a constant speed; And And a paint supply tank configured to constantly supply the stored paint through a hose connected to the swivel of the shaft. The method of claim 1, The shaft is composed of upper and lower double pipes so as to be supplied to the front and rear nozzles, respectively, and a pair of hoses from the paint supply tank are connected to the swivel, respectively, to provide uniform pressure to the upper and lower double pipes of the shaft. A multistage injector in a pipe, characterized in that the supply of paint is formed. The method according to claim 1 or 2, Further provided with an intermediate support in front of the main body, The intermediate support is formed by a body, a paint storage tank formed longitudinally in the body and connected through a swivel of the shaft at the rear and the paint supply tank and a hose at the front, and a ring and a rope formed at the front of the shaft. A rear ring formed at the rear of the body to be connected, a front ring formed at the front of the body to be connected to a rope towed by the winch, and coupled to a front end of the paint storage tank and supplied from the paint supply tank An on-off valve formed so as to block paint and a lengthwise direction formed in the body and a wire inlet for drawing the wire for the camera operation, comprising a multi-stage injection device.

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