JP2005296720A - Apparatus and method for lining of piping - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus and a method for lining of piping permitting high-quality and highly reliable coating in a short operation time and being advantageous with reduced expenses due to improved workability of coating. <P>SOLUTION: The first translocator 7 and the second translocator 8 are arranged forward and backward within a piping net 6 and moved in the same direction along the axial direction of the net 6 by a driving pressure. An operation wire 11 is arranged in a slidable way in the direction for the second translocator 8 to come in close proximity to the first translocator 7. A coating 9 is supplied between the translocators 7 and 8, and, when the translocators 7 and 8 are moved within the net 6 by a driving pressure, the second translocator 8 presses the coating 9 so as to apply the coating 9 to the the inside wall section 6a of the net 6 while pressing the coating 9 from the outer periphery of the translocator 8 toward the inside wall section, resulting in improved workability. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a pipe lining apparatus and a pipe lining method for applying coating to pipes such as buried pipes, drain pipes, and water supply pipes after cleaning.

Many types of foreign matter such as food residues, oils and fats, used detergents, hair, gravel and earth and sand adhere to and accumulate on pipes such as buried pipes and water supply and drainage pipes that are placed inside or outside the building. Water scale). In order to restore the function and hygiene of the piping, the cleaning equipment is used to periodically clean the piping to completely remove the scale that adheres to and accumulates on the piping.
After cleaning the pipe, in order to maintain the durability of the pipe and the like, a coating material having a predetermined thickness is applied in layers in the pipe by a lining device (for example, Patent Documents 1 to 4). In addition, there is one in which a moving object in the pipe is provided in order to perform a wiring work in the pipe, a fluid / dust discharge work, and a cleaning work (for example, Patent Document 5).
JP 55-44320 A Japanese Examined Patent Publication No. 58-50779 Japanese Patent Publication No.58-24195 Japanese Examined Patent Publication No. 58-26987 Japanese Utility Model Publication No.59-7987

In Patent Document 1, a coating material is sandwiched between pigs and moved by air pressure or water pressure in the pipe, and the coating material is applied to the inner surface of the pipe while the pig moves in the pipe.
In Patent Document 2, a wire through which a plurality of pigs are passed at a predetermined interval is placed in a pipe, a paint is supplied between the pigs, and the wire is pulled from one end of the pipe toward the other end. In the process of pulling the wire, the paint is applied by extruding the paint and adhering it to the inner surface of the pipe.

In Patent Document 3 and Patent Document 4, a high-speed mixed fluid obtained by mixing an air flow and a paint by a mixing nozzle is jetted inward of a pipe to be processed, and a paint layer is adhered and laminated on the inner wall surface near the inlet end of the pipe. . Thereafter, coating is performed by sequentially flowing the laminated coating layers forward with compressed air from the acceleration nozzle.
Moreover, in patent document 5, after closing a pipe end with a cup, the cage-shaped balloon main body which was rapidly expanded by sending compressed air from the hose is moved along the pipe.

  Patent Documents 1 to 4 have a disadvantage that a relatively large apparatus is required, work is required for a long time, coating workability is low, processing costs are increased, and disadvantageous. Therefore, in the piping construction maintenance management industry, it has been desired to realize a lining apparatus that improves painting workability, finishes painting in a short time, and is advantageous at a low processing cost. Patent document 5 is a moving object in a pipe used for a line work in a pipe, a fluid / dust discharge work and a cleaning work, and does not intend a work for applying paint in the pipe.

  The present invention has been made in view of the above-mentioned demands, and its purpose is to be able to uniformly and uniformly paint the inside of a pipe with a relatively simple operation, while enabling painting with high quality and reliability. It is an object of the present invention to provide a pipe lining apparatus and a pipe lining method that can be completed in a short time, improve the coating workability, and are advantageous at a low processing cost.

(About Claim 1 and Claim 17)
The first moving body and the second moving body move in the same direction along the axial direction of the pipe by the driving pressure that is disposed forward and backward in the pipe and is supplied into the pipe. The rope for operation is connected to the first moving body so that the second moving body can slide in the direction approaching the first moving body. The coating material is supplied between the first moving body and the second moving body, and is arranged so as to be pressed by the second moving body. When the first moving body and the second moving body move in the pipe by the driving pressure, the second moving body presses the coating material and presses the coating material against the inner wall portion of the piping by the outer peripheral portion of the second moving body.
At the time of painting, the second moving body presses the coating material against the first moving body by driving pressure, and pushes an appropriate amount of coating material from the outer peripheral portion of the second moving body to the inner wall portion of the pipe. For this reason, an appropriate amount of paint is always supplied to the outer peripheral portion of the second moving body without interruption, and the outer peripheral portion of the second moving body works as a spatula for applying the paint while spreading the paint, so that it is universally applied to the inner wall portion of the pipe. Apply evenly. As a result, while enabling high quality and reliable coating, the first moving body and the second moving body can be moved in the pipe by adjusting the feeding of the cable body, and the painting work can be performed. It is performed in a short time, and the coating workability is improved, which is advantageous at a low processing cost.

When the first moving body and the second moving body are inflated and contracted, even if the pipe is bent like a square shape or an elbow, or even if the branch pipe is a complex different-diameter pipe with multiple branches, the first movement The body and the second moving body can pass through the pipe while being deformed by themselves. For this reason, it is not necessary to prepare a plurality of bags corresponding to pipes of different thicknesses and replace the first moving body and the second moving body with different ones every time the inner diameter of the pipe is different from the viewpoint of labor and cost. It is advantageous.
In addition, since the subsequent second moving body employs a configuration in which the paint is pressed against the first moving body, it is possible to extrude the paint with a high pressing force, and the viscosity includes a liquid epoxy resin or glass flake as a component. There is an advantage that can be applied to high paints.

  In addition, when changing the thickness of the paint layer formed on the pipe, the paint layer having a desired thickness can be secured by changing the amount of paint supplied to the pipe without replacing the first moving body and the second moving body. The workability is improved and the painting cost can be reduced. Note that the attractive medium for generating the driving pressure includes air, non-flammable fluids such as carbon dioxide and nitrogen gas.

(About Claim 2 and Claim 18)
The first moving body and the second moving body are formed in the shape of a parachute that can be expanded and contracted by plastic such as polyethylene or fibers such as woven fabric. For this reason, the 1st moving body and the 2nd moving body can be passed smoothly without trouble even in the complicated different diameter pipe which turns, or branches into a plurality, can improve painting performance and can improve workability. . In addition, the first moving body and the second moving body can be formed of a commercially available material such as plastic or fiber, which contributes to a reduction in painting costs.

(About Claim 3 and Claim 19)
The outer peripheral portion of the second moving body has a large number of raised projections in the circumferential direction that press the paint against the inner wall portion of the pipe. The large number of protrusions play the role of a spatula, so that the paint can be applied to the inner wall portion of the pipe with a good finish without leaving unpainted or damaged paint, and high-quality and reliable coating becomes possible.

(About Claim 4 and Claim 20)
The outer peripheral portion of the second moving body is formed with a plurality of spongy projecting piece portions in the circumferential direction that press the paint against the inner wall portion of the pipe. Since the plurality of projecting pieces play the role of a spatula, the paint can be applied with a good finish as in the third aspect, and coating with high quality and reliability is possible.

(About Claim 5 and Claim 21)
The outer peripheral portion of the second moving body is provided with a flocked portion in the circumferential direction that presses the paint against the inner wall portion of the pipe. When the flocked portion plays the role of a spatula, the paint can be applied with a good finish as in the third aspect, and coating with high quality and reliability is possible.

(About Claim 6 and Claim 22)
One of the first moving body and the second moving body is formed in a parabolic shape, and the other is formed in a ball shape. In this case, the second moving body receives a driving pressure during painting, presses the coating material against the first moving body, and pushes an appropriate amount of coating material from the outer peripheral portion of the second moving body onto the inner wall portion of the pipe. Therefore, an appropriate amount of coating material is always supplied to the outer peripheral portion of the second moving body without interruption, and the outer peripheral portion of the second moving body applies the coating material evenly and uniformly to the inner wall portion of the pipe. The same effect can be obtained.

(About Claim 7 and Claim 23)
One of the first moving body and the second moving body is formed in a parabolic shape, and the other is formed in a bowl shape. In this case, the second moving body receives driving pressure during painting, presses the paint against the first moving body, and extrudes an appropriate amount of paint from the outer peripheral portion of the second moving body to the inner wall portion of the pipe, The same effect as in the first aspect can be obtained.

(About Claim 8 and Claim 24)
One of the first moving body and the second moving body is formed in a parabolic shape, and the other is formed in a bottomed cylindrical shape. In this case, the second moving body receives driving pressure during painting, presses the paint against the first moving body, and extrudes an appropriate amount of paint from the outer peripheral portion of the second moving body to the inner wall portion of the pipe, The same effect as in the first aspect can be obtained.

(About Claim 9 and Claim 25)
One of the first moving body and the second moving body is formed in a parabolic shape, and the other is formed in a cup shape. In this case, the second moving body receives driving pressure during painting, presses the paint against the first moving body, and extrudes an appropriate amount of paint from the outer peripheral portion of the second moving body to the inner wall portion of the pipe, The same effect as in the first aspect can be obtained.

(About Claim 10 and Claim 26)
One of the first moving body and the second moving body is formed in a parabolic shape, and the other is formed in a conical shape. In this case, the second moving body receives driving pressure during painting, presses the paint against the first moving body, and extrudes an appropriate amount of paint from the outer peripheral portion of the second moving body to the inner wall portion of the pipe, The same effect as in the first aspect can be obtained.

(About Claim 11 and Claim 27)
One of the first moving body and the second moving body is formed in a parabolic shape, and the other is formed in a hemispherical shape. In this case, the second moving body receives driving pressure during painting, presses the paint against the first moving body, and extrudes an appropriate amount of paint from the outer peripheral portion of the second moving body to the inner wall portion of the pipe, The same effect as in the first aspect can be obtained.

(About Claim 12 and Claim 28)
Both the first moving body and the second moving body are formed in a ball shape. In this case, the second moving body receives driving pressure during painting, presses the paint against the first moving body, and extrudes an appropriate amount of paint from the outer peripheral portion of the second moving body to the inner wall portion of the pipe, The same effect as in the first aspect can be obtained.

(About Claim 13 and Claim 29)
One of the first moving body and the second moving body is formed in a parabolic shape, and the other is formed in an abacus ball shape. In this case, the second moving body receives driving pressure during painting, presses the paint against the first moving body, and extrudes an appropriate amount of paint from the outer peripheral portion of the second moving body to the inner wall portion of the pipe, The same effect as in the first aspect can be obtained.

(About claims 14 and 30)
The first moving body is formed in a parabolic shape having a large number of paint exuding holes, and the second moving body is a shielding plate that presses the paint close to the first moving body. In this case, the shielding plate as the second moving body receives a driving pressure during painting, presses the paint against the first moving body, and extrudes an appropriate amount of the paint from the paint bleed hole to the inner wall portion of the pipe, The same effect as in the first aspect can be obtained.

(About claims 15 and 31)
The first moving body and the second moving body are composed of a ball and a cloth that wraps around the ball and forms a flare portion that spreads toward the front. In this case, the second moving body receives a driving pressure during painting, presses the paint against the first moving body, and extrudes an appropriate amount of paint from the flare portion of the second moving body to the inner wall portion of the pipe, The same effect as in the first aspect can be obtained.

(About Claim 16 and Claim 32)
At least one of the first moving body and the second moving body is formed in a mesh structure in which the paint can be discharged from the mesh. In this case, the second moving body receives a driving pressure during painting, presses the paint against the first moving body, discharges an appropriate amount of paint from the mesh structure, and interrupts the appropriate amount of paint from the outer peripheral portion of the second moving body. Since it discharges to the inner wall part of piping, the same effect as Claim 1 is acquired.

  Due to the driving pressure generated at the time of painting, the subsequent second moving body presses the coating material against the preceding first moving body and presses an appropriate amount of coating material from the outer peripheral portion of the second moving body against the inner wall portion of the pipe. An appropriate amount of coating material is always supplied to the outer peripheral portion of the second moving body without interruption, and the outer peripheral portion of the second moving body spreads the coating material evenly and uniformly applies to the inner wall portion of the pipe. Enables highly reliable painting.

  1 to 3 show a first embodiment of the present invention. FIG. 1 shows an example of lining construction in a drain pipe of a building H, which has a vertical vent pipe 1, a sewage main pipe 2 and a miscellaneous drain main pipe 3 communicating with an external dredger 5 as pipes. An indoor horizontal pipe 4 communicating with each floor F is provided from the miscellaneous drainage main pipe 3.

  As shown in FIG. 2, the indoor horizontal pipe 4 on each floor F is provided with a pipe network 6 having a kitchen drain port 6b, a wash surface drain port 6c, a laundry drain port 6d, and a bathroom drain port 6e on one end side as pipes. Yes. Prior to lining the piping network 6, the piping network 6 is cleaned together with the ventilation pipe 1, the sewage main pipe 2 and the miscellaneous drainage main pipe 3. It is recovered by a pipe rehabilitation vehicle (VacL machine) Va (see arrows A, B, C, D).

  FIG. 3 shows the first moving body 7 and the second moving body 8 both formed in the shape of a parachute in order to coat the inner wall portion 6a of the piping network 6 after cleaning. As shown in FIG. 3A, the first moving body 7 and the second moving body 8 are arranged at predetermined intervals on the inner wall portion 6a of the piping network 6, and are made of, for example, polyethylene or vinyl chloride. It is formed from a fiber such as plastic or woven fabric so as to be freely expanded and contracted. The shape of the first moving body 7 and the second moving body 8 is a shopping bag shape such as a shop, a hood shape, a drawstring shape, a dome shape, a hemispherical shape, a spire shape, a warhead shape, a shell shape, a finger sack shape, a helmet shape, Any material that enters the paint 9 and can be spread by pressing, such as a cone, windsock, trumpet, bell, drum, stocking, saddle, nose column, or wedge. Good.

  The rear end opening 7a of the first moving body 7 is provided with a tracking wire 11 that is connected by bundling a plurality of control ropes 10 as a rope body. The wire 11 penetrates the subsequent second moving body 8 so as to be slidable in the axial direction, bundles the control rope 12, and extends to the outside of the piping network 6 as a work rope. The outer diameter of the first moving body 7 is set so as to substantially match the inner diameter of the piping network 6, and the outer diameter of the second moving body 8 is larger than the outer diameter of the first moving body 7. It is set a little smaller. In addition, about the magnitude relationship of the outer diameter size of the 1st moving body 7 and the 2nd moving body 8, the 1st moving body 7 may be larger than the 2nd moving body 8, and conversely, the 2nd moving body 8 is 1st. It may be larger than one moving body 7 and can flexibly cope with the properties of the paint, piping conditions, usage conditions, and the like.

  When the inner wall 6a of the pipe network 6 is painted, for example, a paint 9 in which a liquid epoxy resin or the like is mixed between the first moving body 7 and the second moving body 8 using the pipe lining method of the present invention. Is supplied in a set amount. In this state, for example, the pump Pm of FIG. 2 is driven using a household 100v power source, and air, carbon dioxide, nitrogen gas, or the like is applied to the piping network 6 as a pressure medium, and driving pressure (positive pressure, negative pressure). Either is possible). At this time, when the wire 11 is gradually pulled out while being loosened, the first moving body 7 and the second moving body 8 advance in the piping network 6 in the direction indicated by the arrow E in FIG. In this process, as shown in FIG. 3B, the second moving body 8 is displaced in the direction approaching the first moving body 7 by the piston action to press the paint 9, and the outer periphery of the second moving body 8 Extrude from part. Accordingly, the outer peripheral portion of the second moving body 8 spreads the coating material 9 on the inner wall portion 6a of the piping network 6, and uniformly forms a coating layer 9a having a predetermined thickness on the inner wall portion 6a of the piping network 6.

  In the above configuration, the second moving body 8 presses the paint against the first moving body 7 by the driving pressure generated during painting, and an appropriate amount of the paint 9 is applied from the outer peripheral portion of the second moving body 8 to the inner wall portion 6a of the pipe network 6. Extrude into. Therefore, an appropriate amount of the paint 9 is always supplied to the outer peripheral portion of the second moving body 8 without interruption, and the outer peripheral portion of the second moving body 8 works as a spatula for painting while spreading the paint 9. 6 can be uniformly applied to the inner wall portion 6a. As a result, a simple operation such as moving the first moving body 7 and the second moving body 8 within the piping network 6 by adjusting the feeding of the wire 11 is possible while enabling coating with high quality and reliability. The painting work is performed in a short time, and the painting workability is improved, which is advantageous at a low processing cost.

FIG. 4A shows Example 2 of the present invention. The difference between the second embodiment and the first embodiment is that a large number of paint bleed holes 13 are formed in the circumferential direction on the outer peripheral surface of the first moving body 7. In this case, the second moving body 8 is a disc-shaped shielding plate 14 and is provided so as to be slidable in the axial direction within the first moving body 7.
At the time of painting, the shielding plate 14 of the second moving body 8 receives the driving pressure and approaches the first moving body 7, presses the paint 9 against the first moving body 7 by the piston action, and an appropriate amount of paint from the paint bleed hole 13. Since 9 is extruded to the inner wall portion 6a of the pipe network 6 without being interrupted, the coating layer 9a having a predetermined thickness can be uniformly formed on the inner wall portion 6a of the pipe network 6.

  FIG. 4B shows Example 3 of the present invention. The difference between the third embodiment and the second embodiment is that the second moving body 8 is formed in a bowl shape. In this case, the bowl-shaped second moving body 8 is provided in the first moving body 7 so as to be slidable in a direction approaching the first moving body 7. At the time of painting, the bowl-shaped second moving body 8 receives the driving pressure and approaches the first moving body 7, and presses the paint 9 against the first moving body 7 by the piston action. can get.

  FIG. 4C shows Example 4 of the present invention. The difference between the fourth embodiment and the second embodiment is that the second moving body 8 is formed in a ball shape. The ball-shaped second moving body 8 is provided in the first moving body 7 so as to be slidable in a direction approaching the first moving body 7. At the time of painting, the ball-like second moving body 8 receives the driving pressure and approaches the first moving body 7 and presses the paint 9 against the first moving body 7 by the piston action. can get.

  FIG. 5 shows a fifth embodiment of the present invention. The difference between the fifth embodiment and the first embodiment is that the second moving body 8 is formed in a ball shape. At the time of painting, as shown in FIG. 5A, the ball-shaped second moving body 8 receives driving pressure and approaches the first moving body 7 to press the paint 9 against the first moving body 7. Therefore, as shown in FIG. 5B, an appropriate amount of paint 9 is extruded from the outer peripheral portion of the second moving body 8 to the inner wall portion 6a of the pipe network 6 without interruption, and the same effect as in the first embodiment. Is obtained. Contrary to the above, the ball-shaped second moving body 8 may be arranged first and the first moving body 7 may be followed.

  FIG. 6 shows Embodiment 6 of the present invention. Example 6 is different from Example 1 in that both the first moving body 7 and the second moving body 8 are formed in a ball shape. At the time of painting, as shown in FIG. 6A, the ball-shaped second moving body 8 receives the driving pressure, approaches the first moving body 7, and presses the paint 9 against the first moving body 7. Therefore, as shown in FIG. 6B, an appropriate amount of paint 9 is extruded from the outer peripheral portion of the second moving body 8 to the inner wall portion 6a of the piping network 6 without interruption, and the same effect as in the first embodiment. Is obtained.

  FIG. 7 (a) shows a seventh embodiment of the present invention. Example 7 is different from Example 1 in that the second moving body 8 is formed in a brown tube shape. During painting, the second moving body 8 in the form of a brown tube receives driving pressure and approaches the first moving body 7 to press the paint 9 against the first moving body 7. For this reason, an appropriate amount of paint 9 is extruded from the outer peripheral portion of the second moving body 8 to the inner wall portion 6a of the piping network 6 without interruption, and the same effect as in the first embodiment is obtained. Note that the shape of the second moving body 8 is a tea cylinder, which is only an example, and the second moving body 8 is not limited to the brown cylinder but may be a bottomed cylinder.

  FIG. 7B shows an eighth embodiment of the present invention. The difference between Example 8 and Example 1 is that the second moving body 8 is formed in a cup shape from a material such as paper or synthetic resin. At the time of painting, the cup-shaped second moving body 8 receives the driving pressure, approaches the first moving body 7, and presses the paint 9 against the first moving body 7. For this reason, an appropriate amount of paint 9 is extruded from the outer peripheral portion of the second moving body 8 to the inner wall portion 6a of the piping network 6 without interruption, and the same effect as in the first embodiment is obtained.

  FIG. 7C shows Example 9 of the present invention. The difference between the ninth embodiment and the first embodiment is that the second moving body 8 is formed in a conical shape. At the time of painting, the conical second moving body 8 receives the driving pressure, approaches the first moving body 7, and presses the paint 9 against the first moving body 7. For this reason, an appropriate amount of paint 9 is extruded from the outer peripheral portion of the second moving body 8 to the inner wall portion 6a of the piping network 6 without interruption, and the same effect as in the first embodiment is obtained.

  FIG. 8A shows Example 10 of the present invention. Example 10 differs from Example 1 in that the second moving body 8 is formed in a hemispherical shape. At the time of painting, the hemispherical second moving body 8 receives the driving pressure, approaches the first moving body 7, and presses the paint 9 against the first moving body 7. For this reason, an appropriate amount of paint 9 is extruded from the outer peripheral portion of the second moving body 8 to the inner wall portion 6a of the piping network 6 without interruption, and the same effect as in the first embodiment is obtained.

  FIG. 8B shows Example 11 of the present invention. Example 11 is different from Example 1 in that the second moving body 8 is formed in an abacus bead shape. At the time of painting, the second moving body 8 in the form of a abacus receives driving pressure, approaches the first moving body 7, and presses the paint 9 against the first moving body 7. For this reason, an appropriate amount of paint 9 is extruded from the outer peripheral portion of the second moving body 8 to the inner wall portion 6a of the piping network 6 without interruption, and the same effect as in the first embodiment is obtained.

  FIG. 9 shows Embodiment 12 of the present invention. The difference of the embodiment 12 from the embodiment 1 is that the balls 16 are arranged in the first moving body 7 and the second moving body 8 so as to be freely movable as shown in FIG. In this case, when the ball 16 is subjected to the driving pressure, the ball 16 imparts directivity to the first moving body 7 and the second moving body 8 as shown in FIG. Thus, the first moving body 7 and the second moving body 8 can be smoothly passed without any trouble even if the first moving body 7 and the second moving body 8 are bent or complicated. The ball 16 may be provided on only one of the first moving body 7 and the second moving body 8 and not on the other.

FIG. 10 shows Embodiment 13 of the present invention. Example 13 is different from Example 1 in that the first moving body 7 and the second moving body 8 are composed of a ball 17 and a cloth 18 that wraps around the ball 17 and forms a flare portion 18a that spreads forward. is there.
In this case, the second moving body 8 receives a driving pressure during painting and presses the paint 9 against the first moving body 7 as shown in FIG. 10 (a), so as shown in FIG. 10 (b). The appropriate amount of paint 9 is extruded from the flare portion 18a of the second moving body 8 to the inner wall portion 6a of the piping network 6 without interruption, and the same effect as in the first embodiment is obtained. Only one of the first moving body 7 and the second moving body 8 may be used alone. Moreover, you may form the following 2nd mobile body 8 in a tea cylinder shape, cup shape, a cone shape, a hemispherical shape, or an abacus ball shape, as shown in Examples 7-11.

FIG. 11 shows Embodiment 14 of the present invention. Example 14 differs from Example 1 in that the first moving body 7 is formed in a mesh structure as shown in FIG. 11A, and the paint 9 can be discharged from the mesh of the mesh structure. In other words, the first moving body 7 includes a mesh tube 21 that is connected to the circular guide plate 20 and has a predetermined tube length.
In this case, the second moving body 8 receives driving pressure during painting and presses the paint 9 against the first moving body 7 as shown in FIG. 11B, so that the paint 9 is discharged from the mesh of the mesh tube 21. At the same time, it is extruded from the outer peripheral portion of the second moving body 8 to the inner wall portion 6a of the pipe 6 without interruption. Thereby, the coating layer 9a of predetermined thickness can be uniformly formed in the inner wall part 6a of the piping network 6 similarly to Example 1 uniformly. In addition, the 2nd moving body 8 is abbreviate | omitted among the 1st moving body 7 and the 2nd moving body 8, and you may use only the 1st moving body 7 independently. In this case, the shielding plate 14 shown in the second embodiment may be provided in the mesh tube 21, and the paint 9 may be extruded from the mesh tube 21 to the inner wall 6 a of the piping network 6 by the piston action of the shielding plate 14. Moreover, you may form the following 2nd mobile body 8 in a tea cylinder shape, cup shape, a cone shape, a hemispherical shape, or an abacus ball shape, as shown in Examples 7-11.

FIG. 12 shows Embodiment 15 of the present invention. Example 15 differs from Example 1 in that the first moving body 7 is formed in a mesh structure such as stockings as shown in FIG. 12A, and the paint 9 can be discharged from the mesh of the mesh structure. It is that. That is, the 1st moving body 7 is formed in the substantially paraboloid shape by the mesh bodies 22, such as a wire net, a woven fabric, and a synthetic fiber, and can discharge the coating material 9 from a mesh by pressing force.
In this case, the second moving body 8 receives the driving pressure during painting and presses the paint 9 against the first moving body 7 as shown in FIG. 12B, so that the paint 9 is discharged from the mesh of the mesh body 22. At the same time, it is extruded from the outer peripheral portion of the second moving body 8 to the inner wall portion 6a of the pipe 6 without interruption. Thereby, the coating layer 9a of predetermined thickness can be uniformly formed in the inner wall part 6a of the piping network 6 similarly to Example 1 uniformly. Of the first moving body 7 and the second moving body 8, only the first moving body 7 may be provided, and the second moving body 8 may be omitted. In this case, the shielding plate 14 shown in the second embodiment may be provided in the mesh body 22 and the paint 9 may be pressed by a piston action. Moreover, you may form the following 2nd mobile body 8 in a tea cylinder shape, cup shape, a cone shape, a hemispherical shape, or an abacus ball shape, as shown in Examples 7-11.

(Example of use)
Since the first moving body 7 and the second moving body 8 in the shape of a parachute are freely expandable and contractible, the piping network 6 is bent like a square shape or an elbow as shown in FIG. 2, and the branch pipe is divided into a plurality of branches. Even if it is a different diameter pipe, the 1st moving body 7 and the 2nd moving body 8 can pass a different diameter pipe without trouble by expansion-contraction deformation. For this reason, there is no need to prepare a plurality of bags corresponding to pipes of different thicknesses and replace the bags every time the inner diameter of the pipes is different, which is advantageous from the viewpoint of labor and cost. When the thickness dimension of the coating layer 9a is insufficient, the piping network 6 may be applied not only once but repeatedly. Also, when the pipe network 6 is divided into a plurality of layers such as undercoat, intermediate coat, and finish coat, the same process as described above can be performed.

(Example of use)
In general, as shown in FIG. 13 (a), the cross-sectional shape changes from a rectangular shape to a square shape as shown in FIG. 13 (b). As shown in FIG. 13C, the stepped portion 31a of the different-diameter pipe 31 or the shape suddenly changing portion 32a or the corner portion 32b of the stepped hexagonal pipe 32 causes turbulent flow or stagnation, resulting in unpainted or damaged paint. There are circumstances that occur.
However, among the first moving body 7 and the second moving body 8, a spongy protruding piece such as a raised protrusion or sponge or a flocked portion (not shown) is provided particularly on the outer periphery of the second moving body 8. These play the role of spatula, and paint with a good finish without leaving unpainted or spoiled coating on the different diameter pipes 30, 31 having the stepped parts 30a, 31a and the hexagonal pipe 32 having the shape suddenly changing part 32a. Can be applied.

(Example of use)
Further, as shown in FIG. 14, a single pipe drainage joint 33 that connects an upper collecting pipe and a lower collecting pipe is used in piping work for high-rise and high-rise buildings. (Not shown) and undulations such as swirl vanes 34 and 35 are provided (see FIGS. 15 and 16). Even in the single-pipe drainage joint 33 that undulates in its interior, the first moving body 7 and the second movable body 8 freely expand and contract while being in close contact with the inner peripheral surface portion of the single-pipe drainage joint 33. The paint can be applied with a good finish that passes smoothly and has no unpainted or damaged coating due to the action of the protrusions, protrusions or flocked parts. A pipe having a structure having a spiral groove, an uneven portion or a corner portion inside, and having a shape in which turbulent flow and stagnation are likely to occur when the first moving body 7 and the second moving body 8 pass is the same as in FIG.
Furthermore, in a high-rise building, a collective joint 38 such as a single-pipe drainage type sorbent or a section shown in FIG. 17 is used. The collective joint 38 is connected to a horizontal pull pipe 37 and vertical main pipes 36 and 39 inside. Cross-sectional shape suddenly changing portions 38a, 38b, and 38c are provided. The inside of the collective joint 38 can be coated with a good finish by moving the first moving body 7 and the second moving body 8 in a close contact state with the suddenly changing sections 38a, 38b, and 38c.

(Modification)
In each embodiment, the first moving body 7 and the subsequent second moving body 8 may be arranged in reverse. Moreover, although the wire 11 was used as a rope body, not only the wire 11, but the 1st moving body 7 and the 2nd moving body 8 can be drawn out like a long belt, a thin string body, a wire, or a rope. I just need it. Moreover, although the 1st moving body 7 and the 2nd moving body 8 were connected in series, you may provide two or more moving bodies following the 1st moving body 7. FIG. Further, as the pipe network 6, not only drain pipes but also air conditioning ducts and exhaust ducts (industrial ducts, kitchen ducts) can be applied. In addition, in concrete implementation of this invention, it can change variously in the range which does not deviate from the summary of this invention.

It is the schematic which shows the lining construction example of the drain pipe used as the object of coating (Example 1). It is a general view of the piping network which paints. It is a partial longitudinal cross-sectional view of a piping network. It is a partial longitudinal cross-sectional view of a piping network (Example 2-Example 4). (Example 5) which is a fragmentary longitudinal cross-sectional view of a piping network. (Example 6) which is a partial longitudinal cross-sectional view of a piping network. It is a partial longitudinal cross-sectional view of a piping network (Example 7-Example 9). It is a fragmentary longitudinal cross-sectional view of a piping network (Example 10, Example 11). (Example 12) which is a partial longitudinal cross-sectional view of a piping network. (Example 13) which is a partial longitudinal cross-sectional view of a piping network. (Example 14) which is a fragmentary longitudinal cross-sectional view of a piping network. (Example 15) which is a partial longitudinal cross-sectional view of a piping network. (A) and (B) are perspective views of different diameter pipes, and (C) is a perspective view of hexagonal pipes (use example). It is a perspective view of a single pipe type drainage joint (use example). It is a perspective view of a single pipe type drainage joint (use example). It is a perspective view of a single pipe type drainage joint (use example). It is a perspective view of an assembly joint (use example).

Explanation of symbols

1 Vent pipe (pipe)
2 Sewage main (piping)
3 Miscellaneous drainage main (pipe)
4 indoor horizontal pipe (pipe)
6 Piping network (piping)
6a Inner wall part 7 1st moving body 8 2nd moving body 9 Paint
9a Paint layer 11 Wire (strand body)
13 Paint Exudation Hole 14 Shield Plate 16, 17 Ball 18 Cloth 18a Flare Portion 30, 31 Different Diameter Piping (Piping)
32 Hexagonal piping (Piping)

Claims (32)

In piping lining equipment that paints the inside of piping,
A first moving body and a second moving body that move in the same direction along the axial direction of the pipe by the driving pressure that is arranged in the pipe before and after and is supplied into the pipe,
A strip for operation connected to the first moving body so that the second moving body can slide in a direction approaching the first moving body;
A paint which is supplied between the first moving body and the second moving body and arranged to be pressed by the second moving body;
When the first moving body and the second moving body move in the pipe by the driving pressure, the second moving body presses the paint, and the paint is applied to the pipe by the outer peripheral portion of the second moving body. A piping lining device characterized in that it is applied by being pressed against the inner wall of the pipe.   2. The piping lining device according to claim 1, wherein the first moving body and the second moving body are formed in a parabolic shape that can be expanded and contracted by a plastic such as polyethylene or a fiber such as a woven fabric. .   2. The pipe lining device according to claim 1, wherein the outer peripheral portion of the second moving body has a large number of raised protrusions in the circumferential direction that press the paint against the inner wall portion of the pipe.   2. The pipe lining device according to claim 1, wherein the outer peripheral portion of the second moving body includes a plurality of spongy projecting pieces that press the paint against the inner wall of the pipe in the circumferential direction. .   2. The pipe lining device according to claim 1, wherein the outer peripheral part of the second moving body is formed with a flocking part in a circumferential direction for pressing the paint against an inner wall part of the pipe.   2. The piping lining device according to claim 1, wherein one of the first moving body and the second moving body is formed in a parabolic shape and the other is formed in a ball shape.   2. The piping lining device according to claim 1, wherein one of the first moving body and the second moving body is formed in a parabolic shape and the other is formed in a hook shape.   2. The piping lining device according to claim 1, wherein one of the first moving body and the second moving body is formed in a parabolic shape and the other is formed in a bottomed cylindrical shape.   2. The piping lining device according to claim 1, wherein one of the first moving body and the second moving body is formed in a parabolic shape and the other is formed in a cup shape.   2. The piping lining device according to claim 1, wherein one of the first moving body and the second moving body is formed in a parabolic shape and the other is formed in a conical shape.   2. The piping lining device according to claim 1, wherein one of the first moving body and the second moving body is formed in a parabolic shape and the other is formed in a hemispherical shape.   The piping lining device according to claim 1, wherein both the first moving body and the second moving body are formed in a ball shape.   2. The piping lining device according to claim 1, wherein one of the first moving body and the second moving body is formed in a parabolic shape and the other is formed in a abacus ball shape.   The said 1st moving body is formed in the shape of a parachute which has many paint bleed holes, and the said 2nd moving body is a shielding board which presses the said coating material in the vicinity of the said 1st moving body. The piping lining apparatus according to 1.   The pipe lining device according to claim 1, wherein the first moving body and the second moving body are composed of a ball and a cloth that wraps around the ball and forms a flare portion that spreads in front.   2. The pipe lining device according to claim 1, wherein at least one of the first moving body and the second moving body is formed in a mesh structure in which the paint can be discharged from the mesh. In the piping lining method of painting inside the piping,
Arranging the first moving body and the second moving body forward and backward in the pipe and moving in the same direction along the axial direction of the pipe by a driving pressure supplied into the pipe;
A step of disposing an operation cable connected to the first moving body so that the second moving body can slide in a direction approaching the first moving body;
Arranging the paint supplied between the first moving body and the second moving body so as to be pressed by the second moving body;
When the first moving body and the second moving body move in the pipe by the driving pressure, the second moving body presses the paint, and the paint is applied to the pipe by the outer peripheral portion of the second moving body. A piping lining method comprising: applying to the inner wall portion by pressing.   18. The pipe lining method according to claim 17, wherein the first moving body and the second moving body are formed in a parabola-like shape that can be expanded and contracted by a plastic such as polyethylene or a fiber such as a woven fabric. .   18. The pipe lining method according to claim 17, wherein the outer peripheral portion of the second moving body is formed with a large number of brushed protrusions in the circumferential direction that press the paint against an inner wall portion of the pipe.   18. The pipe lining method according to claim 17, wherein a plurality of spongy projecting pieces for pressing the coating material against an inner wall of the pipe are formed on the outer circumference of the second moving body in the circumferential direction. .   18. The pipe lining method according to claim 17, wherein the outer peripheral part of the second moving body is formed with a flocked part in a circumferential direction for pressing the paint against an inner wall part of the pipe.   18. The piping lining method according to claim 17, wherein one of the first moving body and the second moving body is formed in a parabolic shape and the other is formed in a ball shape.   18. The piping lining method according to claim 17, wherein one of the first moving body and the second moving body is formed in a parabolic shape and the other is formed in a hook shape.   18. The piping lining method according to claim 17, wherein one of the first moving body and the second moving body is formed in a parabolic shape and the other is formed in a bottomed cylindrical shape.   18. The piping lining method according to claim 17, wherein one of the first moving body and the second moving body is formed in a parabolic shape and the other is formed in a cup shape.   18. The piping lining method according to claim 17, wherein one of the first moving body and the second moving body is formed in a parabolic shape and the other is formed in a conical shape.   18. The piping lining method according to claim 17, wherein one of the first moving body and the second moving body is formed in a parabolic shape and the other is formed in a hemispherical shape.   The pipe lining method according to claim 17, wherein both the first moving body and the second moving body are formed in a ball shape.   18. The piping lining method according to claim 17, wherein one of the first moving body and the second moving body is formed in a parabolic shape and the other is formed in a abacus ball shape.   The said 1st moving body is formed in the shape of a parachute which has many paint bleed holes, and the said 2nd moving body is a shielding board which presses the said coating material in the vicinity of the said 1st moving body. 17. The piping lining method according to 17.   The pipe lining method according to claim 17, wherein the first moving body and the second moving body include a ball and a cloth that wraps around the ball and forms a flare portion that spreads forward.   18. The pipe lining method according to claim 17, wherein at least one of the first moving body and the second moving body is formed in a mesh structure in which the paint can be discharged from the mesh.

Images