JP2000084461A - Lining apparatus for inner surface of piping - Google Patents

Abstract

PROBLEM TO BE SOLVED: To line a inner surface of piping smoothly by using in a lining apparatus a flexible guide pipe having such a wave shaped wall in longitudinal section that the edges of an outer surface and an inner surface are continuously concave and convex, and the edge of the outer surface is in a tapered shape convergent in the forward direction. SOLUTION: An coating device 1 which sprays lining material on the inner surface of a pipe is connected to a supplying pipe made of a urethane, which supplies the lining material, and in the front side of the lining device 1 are formed a straight pipe made of a specific olefin resin or a vinylic resin, and a guide pipe made of the said material, which is provided with a tapered portion convergent in the forward direction and which is a flexible pipe in such a waved shape that the edges of an outer surface and an inner surface are continuously concave and convex in a longitudinal section. And, further, a pulling tube 4 which pulls the coating device at lining application is connected to the front tip of the guide pipe 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

2. Description of the Related Art For lining of existing drain pipes,
For example, there is a lining device and a lining method for a pipe inner surface disclosed in Japanese Patent Application Laid-Open No. 9-201560.

[0002] The lining device disclosed here is:
A driving device having a rotating shaft for transmitting the rotating motion is built in the casing, and when the traveling direction at the time of lining construction is set to the front, the rotating shaft is projected backward of the casing, and a cup-shaped injector is provided at the tip thereof. Is fixed to the drive device side so as to be concave, and an ejector that has a casing piercing the casing in the front-rear direction and that opens a lining material supply pipe that supplies the lining material to the inside of the injector, and a lining on the front side of the ejector A flexible tow line for pulling the ejector at the time of construction is connected, and in front of the ejector, a plurality of disc-shaped guide plates and a tow line penetrated by the tow line and the lining material supply pipe. And a lining device having a plurality of spherical spacers penetrated by a lining supply pipe, and a spherical lining pig connected at a predetermined interval behind the jetting machine. That.

[0003] In the lining method, the lining device is inserted from one end of a pipe to be subjected to lining in the order of a lining pig, an ejector, a guide plate and a spacer, and then pressurized air is supplied from one end of the pipe. In this method, the blasting machine is transferred to the lining construction start end without blowing out the lining material, and then the lining material is blown out from the blasting machine while the lining device is pulled by a towing line, thereby lining the inner surface of the pipe.

In this lining method using the lining device, the pipe to be installed can be lined by opening one end of the pipe, so that the inner surface of the existing pipe can be easily lined without being dismantled in a large scale. It is used as a possible method.

[0005]

However, the lining method described above can be applied to a 90 ° elbow with a large radius of curvature, but cannot be applied to a 90 ° elbow with a smaller radius of curvature than the elbow joint of a pipe. .

This is because the disc-shaped guide plate strongly fits into a groove peculiar to the threaded drainage pipe joint shown in FIG. 90 ° Omagari elbow and 90 ° for threaded drainage fittings
There are two types of elbows, and a 90 ° elbow is often used in a part of a pipe line from a vertical pipe to a horizontal pipe. For this reason, when the lining device cannot be applied to a 90 ° elbow, it is necessary to remove the floor plate, which causes a problem that the construction period and cost increase. Especially in condominiums before 1975, drain pipes are often installed above the ceiling, and it is necessary to break the ceiling of dwelling units downstairs in order to repair drain pipes, and there is also a problem in construction management. .

In a 90 ° Y-shaped pipe joint shown in FIG. 12 or a pipe line in which another horizontal pipe is connected to another horizontal pipe by a 45 ° Y-shaped pipe joint shown in FIG. When the lining pig is towed in the direction of the arrow, the lining pig protrudes inside the pipe joint,
That is, when the lining pig gets into the portion a of FIG. 12 and the portion b of FIG. 13, the lining pig may be caught on the projection 34 and cannot be pulled back.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and can be used in a pipe in which a 90 ° screw-in type drain pipe joint, a 90 ° Y-shaped pipe joint, or the like is used. It is an object to provide a surface lining device.

[0009]

The present invention has the following configuration to solve the above problems. That is, a coating device that sprays the lining material on the inner surface of the pipe, a flexible lining material supply pipe that supplies the lining material to the coating device,
When the lining material supply pipe is included and the traveling direction at the time of lining construction is forward, a lining provided at the front side of the coating device, and connected to at least one of the coating device and the guide portion, In a lining device provided with a flexible traction cable that pulls the coating device during construction, the guide portion has a tube wall that forms a wavy vertical cross-section by continuous irregularities on an outer peripheral edge and an inner peripheral edge. A lining device characterized in that it is a tapered and flexible guide tube whose outer peripheral edge converges forward.

[0010] Further, a coating apparatus for spraying the lining material on the inner surface of the pipe, a flexible lining material supply pipe for supplying the lining material to the coating apparatus, and a lining material supply pipe including the lining material supply pipe are provided. When the traveling direction is the front, a guide portion provided on the front side of the coating device, and a flexible towing cable connected to at least one of the coating device and the guide portion and pulling the coating device at the time of lining construction. A lining device which is located at the rearmost position of the coating device, is connected by a flexible strip, and has a conical conveying pig which converges to the coating device side. It may be.
The guide portion of this lining device is not particularly limited,
When the guide portion is configured as the guide tube, more preferable results are obtained.

As the coating apparatus, the jetting machine described in the prior art can be used. Therefore, the coating device incorporates a driving device having a rotating shaft for transmitting the rotating motion in the casing, and when the traveling direction at the time of lining construction is set to the front, the rotating shaft is projected to the rear of the casing, and a cup is provided at the tip thereof. The injector may be fixed to the driving device side so as to be concave, and the casing may be penetrated in the front-rear direction to open a lining material supply pipe for supplying the lining material to the inside of the injector.

The casing has a built-in drive unit, and at the time of lining, the distance between the rotation axis of the drive unit and the inner wall of the pipe to be lined is kept constant. The casing of the coating device is preferably spherical in shape to turn the entire coating device through 90 ° when passing through the 90 ° screw-in drainage pipe joint, but the injector is not in contact with the back of the 90 ° screw-in drainage pipe joint, It is further preferable that the rear portion is formed in a spherical shape in which the rear portion is cut by a plane perpendicular to the traveling direction with respect to the lining construction direction.

[0013] The driving device has a rotating shaft that makes a rotating motion and transmits the rotating motion. The lining material supplied to the inside of the injector fixed to the tip of the driving device by the rotational motion is sprayed on the inner surface of the tube by the centrifugal force generated by the rotational motion. Therefore, the driving device is capable of causing the rotational movement for generating the centrifugal force, and is preferably a motor. It is more preferable to connect a motor power cable to the motor so that the current flowing through the motor can be monitored, since the start of lining construction can be specified.

The injector has a cup-like shape, and has an injection hole for injecting a lining material on an outer peripheral portion thereof. When the shape of the injector is a cup shape with a U-shaped cross section,
This is preferable because the lining material supplied from the lining material supply pipe opened to the inside thereof can be temporarily received, and the lining material is jetted in a direction perpendicular to the inner surface of the pipe.

The lining material supply pipe may be any pipe having flexibility so as to supply the lining material to the coating apparatus in the existing pipe forming a complicated pipeline. Further, a branch pipe for branching the lining material supply pipe may be provided at the front of the casing, and a plurality of pipes penetrating the casing and opening to the inside of the injector may be provided, or the lining from the branch pipe to the opening inside the injector may be provided. The material supply pipe does not have to have flexibility. When a plurality of openings are provided, each of the openings is preferably located at a point-symmetric position with respect to the rotation axis.

The guide tube guides the application device during lining. Since the shape is a tapered shape that converges forward from the coating device, the lining device pulled during the lining operation can smoothly move in the pipe without being stuck in the groove peculiar to the 90 ° screw-in drainage pipe joint. Further, between the coating device and the tapered portion, a straight tube portion having flexibility may be provided, having a tube wall which forms a wavy shape by continuous irregularities on the outer peripheral edge and the inner peripheral edge. The guide tube may be a circular tube or a square tube, but is preferably a circular tube. The guide tube is made of a flexible resin such as a special olefin-based resin or a vinyl-based resin, and is preferably lightweight and stretchable. The guide pipe bends the guide pipe to one side as much as possible, and when the radius of curvature of the arc drawn by the outer peripheral edge in the bending direction is R ₁ and the pipe diameter of the guide pipe is R ₂ , R ₁ is divided by R ₂ . It is further preferable that the minimum bending radius R ₁ / R _{2 of} the guide tube is 2 or less, preferably 1 or less. In addition, it is preferable to have a strength that does not break even when pulled in a bent state.

The tow line pulls the application device during lining. Therefore, it may be connected to the front of the coating apparatus and may be included in the guide tube together with the lining material supply tube, or may be connected to the guide tube converging end. Further, by using a flexible tube as the tow line and connecting to the guide tube converging end, the lining material supply tube can be included, and
Since the entire lining device is pulled in the traveling direction at the time of lining construction, unnecessary entanglement and bending in the lining device can be prevented, which is preferable.

As for the lining method, the method described in the prior art can be used. That is, the coating device is inserted from one end of the pipe to be subjected to lining in the order of the guide pipe, and then the air is supplied from one end of the pipe and the ejector is conveyed without ejecting the lining material to the lining construction start end, Next, a lining material is ejected from an ejector while the lining device is towed by a towing line, thereby lining the inner surface of the pipe.

When the coating device and the guide tube are conveyed to the starting end of the lining by the supply of air, when the traveling direction during the lining is set to the front, the coating device and the flexible strip are provided behind the coating device. It is preferable to provide a spherical transport pig to be combined, and one or more transport pigs may be provided. When a plurality of transport pigs are provided, the transport pigs may be connected to each other by a flexible strip. Further, it is more preferable that the transport pig located at the rearmost position of the coating device has a conical shape converging toward the coating device.

The reason is that when the lining device is transported by supplying air from the other horizontal pipe in a pipe line in which the other horizontal pipe is connected to the horizontal pipe by a 90 ° Y-shaped fitting, When the shape of the transfer pig is conical, the shape of the transfer pig is 90 ° Y compared to when the shape of the transfer pig is spherical.
This is because it is difficult to enter the inside of the protrusion of the U-shaped pipe joint, and even if it does enter, it can be easily pulled back.

It is presumed that the reason why it is difficult to enter the inside of the protrusion is that the conical shape is more likely to determine the directionality of the air flow than the spherical shape and is less likely to bounce in the pipe. Also, the reason for easy pullback is that the angle formed by the strip tied to the transport pig and the conical slope is obtuse, so that the conical slope easily rubs the protrusion. It is presumed that the transport pig is lifted up and pulled back to the other horizontal pipe.

The connection between the transport pig and the coating apparatus is provided on both sides of the injector with protectors projecting substantially in the same manner as the injector, and this protector and the transport pig are connected by the strip. The protector protects the rotation of the injector. When the protectors are installed at two locations that are point-symmetric with respect to the rotation axis, when the coating device changes direction with a 90 ° elbow during lining, the strips are evenly stretched and rotated. This is preferable because it is possible to prevent the injector in use from entangling the strip and prevent the protector from contacting the back of the elbow.

The lining material used for lining the inner surface of the pipe may be any lining material as long as it has fluidity under lining construction conditions. The supplied air is conveying the coating device and the guide tube to the lining construction start end, but if air is also supplied during the lining construction, the transport pig receives resistance from the supplied air and pulls the coating device, The direction of the injector is kept constant, and the transport pig is also pulled by the coating device and rises from the inner wall of the pipe, so that the coating of the lining material is not damaged, and is generated between the lifted transport pig and the inner pipe wall. Airflow is preferred because it presses the applied lining material and makes it uniform.

[0024]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to FIG. In the description, the traveling direction at the time of lining construction is referred to as front, and the reverse is referred to as rear.

(First Embodiment) FIG. 1 is a side view of a 50A coating machine as an example of the present invention, and FIG. 2 is a side view of a 100A coating machine.

First, a lining material supply pipe 2 made of urethane and having a length of 15 m, which supplies the lining material to a coating apparatus 1 for spraying the lining material on the inner surface of the pipe, is connected. A guide tube 3 made of a special olefin resin or a vinyl resin and having a straight pipe portion and a tapered portion converging forward, and a traction tube 4 for pulling the coating device 1 at the time of lining construction, are provided in front of the coating device 1. Is connected.

Regarding the shape of the guide tube 3, both the coating machine for 50A and the coating machine for 100A have a circular cross section at the converging end of the tapered portion, but the straight pipe portion is preferably a circular tube shape, but may be a square tube.

Behind the coating device 1, transporting pigs 7 made of special olefin resin or polyacetal resin are provided with protectors 5, 6 projecting from the coating device 1.
And the stainless steel wire strips 8 and 9
And a stainless steel wire strip 1
The transport pig 10 is connected to the transport pig 7 by 1. The transport pig 10 of the 50A coating machine is made by processing a thick polyethylene sheet into a conical shape, and has a diameter of 1 mm.
No.10 of 9.5mm fishing weight, this transport pig 1
The sphere 12 is moved to the transport pig 10 so that 0 does not fall out.
It is arranged to be covered by. The transport pig 10 of the 100A coating machine is a polyethylene ball having a diameter of 92 mm.

Next, with reference to FIG. 3, the structure of the coating apparatus and its peripheral parts will be described. FIG. 3 is a side view of the coating apparatus 1 of the 50A coating machine as an example of the present invention. The coating device 1 includes a casing 13. Casing 1
Reference numeral 3 denotes a shape obtained by cutting the back of a 45 mm sphere by a plane perpendicular to the lining construction direction. From the center of the cut circle, the rotation axis 15 is drawn on a straight line connecting the center of the circle and the center of the sphere. A drive device (motor for 50 A) 14 having a rotating shaft 15 is built in such that the projections protrude. An injector 22 having a U-shaped cross section and having a plurality of injection holes 21 on its outer periphery is fixed to the tip of the rotating shaft 15 protruding from the casing 13.

Two protectors (bars) 5 and 6 are fixed at positions symmetrical with respect to the rotation axis 15 from the end of the circular plane behind the casing 13 so as to be parallel to each other. Has reached almost the same position as the tip of the injector 22.

A branch pipe 18 having a bamboo shoot type hose joint is fixed to the front of the casing 13, and a lining material supply pipe 2 made of urethane and having a length of 15m and an inner diameter of 6.5mm is provided at the front end of the branch pipe 18. It is connected.

Lining material supply pipes 16 and 17 made of a copper pipe having an inner diameter of 2 mm are connected to the rear end of the branch pipe 18. The lining material supply pipes 16 and 17 penetrate the casing 13 back and forth and open to the inside of the injector 22. A motor power cable 19 made of copper wire having a length of 15 m is connected to the 50A motor 14 and extends forward from a front portion of the casing 13. Further, a traction tube auxiliary wire 20 made of a nylon-coated stainless wire having a length of 15 m, one end of which is connected to the branch pipe 18,
It extends forward from the casing 13. Here, the lining material supply pipe 2, the motor power supply cable 19, and the traction tube auxiliary wire 20 are bundled at a predetermined interval and stopped so as not to be displaced from each other.

Next, the guide tube used in the present invention will be described. 4 to 6 are a sectional view and a shape of a flexible tube used for the guide tube in the present invention, respectively.

The flexible pipe shown in FIG. 4 has a shape in which a wavy pipe wall is formed by a trapezoid in which the outer peripheral edge and the inner peripheral edge of the longitudinal section are continuous, and the flexible pipe shown in FIG. It may be a bellows. Further, the shape of the flexible tube shown in FIG. 6 as a bellows formed by coating a spiral body with a resin can also be exemplified. A flexible pipe having these exemplified shapes is processed and used as a guide pipe.

The prepared guide tube 3 is disposed in front of the coating device 1. At this time, the lining material supply tube 2, the motor power cable 19 and the traction tube auxiliary wire 20
The guide tube 3 is arranged so as to include the. This guide tube 3
The traction tube 4 joined to the converging end of the guide tube 3 and including the lining material supply tube 2, the motor power supply cable 19, and the traction tube auxiliary wire 20 is disposed in front of the traction tube 4.

The traction tube 4 of the 50A coating machine has an outer diameter of 19 mm, an inner diameter of 14 mm, and a length of 10 m, and is formed by a drain hose or a shielding tube made of a special olefin resin.

Behind the coating device 1, the transport pigs 7, 1 are provided via protectors 5, 6 and strips 8, 9, 11.
0 is placed. The transport pig 10 of the 50A coating machine is obtained by processing a thick polyethylene sheet and forming a conical shape. In this conical shape, the diameter of the convergent-end opening is smaller than the diameter of the sphere 12 for preventing removal, and the diameter of the open-end opening is larger than the diameter of the sphere 12. The conical shape thus formed is placed on the sphere 12 so that the convergent end of the conical shape is located on the coating device side, thereby forming the transport pig 10.

The lining material used has a viscosity of 3.5 to 3.5.
4.5 Pa · s thermosetting resin paint. Next, the 50A
The lining of the inner surface of the pipe using the coating machine for coating will be described. FIG. 7 is a perspective view of a pipe provided as a drain pipe of an apartment.

The pipe used is a 50A galvanized steel pipe 2
At 3, the pipe is connected by a 90 ° threaded drain fitting 24 and connected to a drain vertical pipe 26 by a 90 ° large bend Y-fitting 25, but this pipe is disassembled and connected due to the surrounding environment. Cannot be replaced. Here, the point A of the 50A galvanized steel pipe 23 is cut to make an opening A. The launcher adapter 27 and the launcher 28 are connected to the opening A.

A method of lining the inner surface of the pipe from the opening A to the point B shown in FIG. 7 by using the 50A coating machine will be described. FIG. 8 is a side view of the 50A coating machine inserted into the pipe. First, the launcher adapter 27 is connected to the opening A, and the pressure gauge 30 and the air supply pipe 31 are further connected.
Is mounted.

Next, as shown in FIG. 8, a traction tube in which a lining material supply pipe 2, a motor power supply cable 19 and a traction tube auxiliary wire 20 are previously contained in a ferrule gasket 29 having an operation hole at a closed end. 4 is inserted into the launcher 28 in the order of the transport pig 7, the coating device 1, and the guide tube 3,
Finally, the ferrule gasket 29 is attached to the launcher 28 body by a clamp.

Next, air of ³ to 4 m ³ / min is supplied from the air supply pipe 31. Further, the air is slightly supplied from the other openings C and D. By this air flow, the 50A coating machine is transported to a point B which is a lining start point. At this time, no lining material is applied. 50A coating machine is B
When the point is reached, air will escape vertically from point B,
The value at the pressure gauge 30 decreases. From this, 50A
It can be determined that the coating machine has reached point B.

The coating machine for 50A is B at the beginning of the lining work.
When the point is reached, the motor 14A is driven to rotate the injector 22. The rotation speed of the 50A motor 14 is about 8000 rpm. Thereafter, when the lining material is supplied to the injector 22, the lining material is injected from the injection holes 21 to the entire inner circumference of the pipe by the centrifugal force generated by the rotational movement, and the lining of the pipe inner surface is started.

The lining is started with the 50A motor 1
4 is determined based on the behavior of the current flowing through the switch. When the lining material is supplied to the injector 22, the current value flowing through the 50A motor 14 increases by 50 to 100 mA. This is because when the lining material is supplied to the injector 22, the 50A motor 1
4 increases the load and requires a larger drive current.

When the lining has started, the traction tube 4
At a predetermined speed to pull the 50A coating machine. Air is supplied from the air supply pipe 31 also at the time of lining construction. Since the transport pigs 7, 10 which receive resistance due to the supplied air pull the 50A coating machine backward, the direction of the injector 22 is always kept constant. The transport pigs 7, 10 generate an airflow between the pipes and the inner wall of the pipe, and the airflow presses the lining material applied to the inner surface of the pipe to make the lining material uniform.

Referring to FIG. 9, the state of the 50A coating machine passing through the 90 ° screw-in type drainage fitting 24 will be described. The transport pigs 7, 10 receive air resistance due to the supply of air during lining. For this reason,
The 50A coating machine is pulled forward and advances, but extends in the front-rear direction due to the tensile force generated by the air resistance of the transporting pigs 7, 10.

When the 50A coating machine passes through the 90 ° screw-in drainage fitting 24, the preceding guide pipe 3 becomes 90 °.
It passes while rubbing the innermost side of the threaded drainage fitting 24. At this time, the guide tube 3 passes through the groove peculiar to the 90 ° screw-in type drainage pipe joint 24 without being caught from its shape.

Also, due to the air resistance applied to the transporting pigs 7, 10, a tensile force acts on the 50A coating machine in the front-rear direction, so that the injector 22 always faces rearward during lining.
As the 50A coating device approaches the 90 ° screw-in drainage fitting 24, the protectors 5, 6 protruding from the casing 13 are positioned symmetrically with respect to a plane including the drainage channel. Is twisted. For this reason, when passing through the 90 ° screw-in drainage fitting 24, the coating device 1 always turns the injector 22 rearward, and the strips 8, 9 are stretched evenly, so that they do not become entangled with the injector 22, and 90A screw-in type drain pipe joint 2
Pass 4 In this way, as the applicator 1 passes through the 90 ° threaded drain fitting 24, the coating device 1 smoothly turns 90 ° and passes through the 90 ° threaded drain fitting 24.

While the lining is being carried out as described above, the lining device is pulled to the ending point A of the lining work, and the lining from the starting point B of the lining work to the opening A which is the ending end of the lining work is carried out. As a result,
A lining film of about 0.5 mm can be uniformly formed on the inner surface of the pipe from the lining start point B to the opening A.

(Second Embodiment) Here, a lining device of the present invention is used for a drain pipe in which another horizontal pipe is connected to another horizontal pipe by a 90 ° Y-shaped pipe joint or a 45 ° Y-shaped pipe joint. Will be described with reference to FIG.

FIG. 10 is a cross-sectional view from above of a place where a large-diameter horizontal pipe and a small-diameter horizontal pipe are connected by a 90 ° Y-shaped pipe joint having a different diameter. The reduced-diameter 90 ° Y-shaped pipe joint 32 connects the 100A galvanized steel pipes 33a and 33b and the 50A galvanized steel pipe 23. From the 50A galvanized steel pipe 23 side, air is supplied toward the reduced-diameter 90 ° Y-shaped pipe joint 32 in order to transport the 50A coating machine.

As shown in FIG. 10-, the coating machine for 50A is supplied with 50A galvanized steel pipe 2 by the supplied air.
When transported from the third side, the transport pig 10 has entered the 100A galvanized steel pipe 33a due to, for example, the transport pig 10 bouncing in the 90 ° Y-shaped pipe joint 32 having a different diameter. The 50A coating machine is the same as in the first embodiment.

The strip 11 connecting the transporting pig 10 and the transporting pig 7 has a projection 34 of a 90 ° Y-shaped pipe joint 32 having a reduced diameter.
Is inside. Here, the 50A coating machine is pulled back.

When the 50A coating machine is pulled, the transport pig 1
The convergence end of 0 is the projection 3 of the 90 ° Y-shaped pipe joint 32 having a reduced diameter.
Comes up to 4. At this time, as shown in FIG.
The transport pig 10 pulled through the strip 11 tends to float up from the projection 34 of the 90 ° Y-shaped fitting 32 with a slightly reduced diameter in order to oppose the pulling force.

At this time, the slope of the transport pig 10 is shown in FIG.
As shown in FIG. 7, the protrusion 34 of the 90 ° Y-shaped pipe joint 32 having a reduced diameter is rubbed up, so that the 50A coating machine can be easily pulled back. Hereinafter, the lining is constructed in the same manner as in the first embodiment.

The present embodiment is not limited to the case where the pipe joint of the horizontal pipe is a 90 ° Y-shaped pipe joint having a different diameter, and the same projection as that of the 90 ° Y-shaped pipe joint having a different diameter. 90 ° Y-shaped pipe joint with the same diameter and 45
The same result as that of the present embodiment can be obtained when the present invention is applied to a pipeline in which horizontal pipes are connected by a Y-shaped pipe joint or the like.

[0057]

According to the present invention, when the lining device is transported by air supply, even if the transport pig enters the inside of the projection such as a 90 ° Y-shaped pipe joint having a projection inside the pipe joint, Can be easily pulled back. In addition, at the time of lining construction, a flexible guide pipe having a tapered shape leads the coating device, so that the lining device moves smoothly without being caught in the groove peculiar to the 90 ° screw type drainage pipe joint, and lining the inner surface of the pipe. Can be constructed.

[Brief description of the drawings]

FIG. 1 is a side view of a 50A coating machine.

FIG. 2 is a side view of a 100A coating machine.

FIG. 3 is a side view of the coating apparatus 1 of the coating machine for 50A.

FIG. 4 is a cross-sectional view showing the shape of a flexible tube used for a guide tube in the present invention.

FIG. 5 is a sectional view showing the shape of a flexible tube used for a guide tube in the present invention.

FIG. 6 is a cross-sectional view of the shape of a flexible tube used for a guide tube in the present invention.

FIG. 7 is a perspective view of a pipe provided as a drain pipe of an apartment.

FIG. 8 is a side view of a 50A coating machine inserted into a pipe.

FIG. 9 is a side view of a 50A coating machine passing through a 90 ° screw-in type drain pipe joint 23.

FIG. 10 is a diagram showing a second embodiment of the present invention.

FIG. 11 is a sectional view of a 90 ° screw-in drainage pipe joint.

FIG. 12 is a sectional view of a 90 ° Y-shaped pipe joint.

FIG. 13 is a sectional view of a 45 ° Y-shaped pipe joint.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Coating device 2 ... Lining material supply pipe (made of urethane) 3 ... Guide pipe 4 ... Traction tube 5, 6 ... Protector 7, 10 ... Transport pig 8, 9, DESCRIPTION OF SYMBOLS 11 ... Strip 12 ... Spherical 13 ... Casing 14 ... Driving device (motor for 50A) 15 ... Rotating shaft 16, 17 ... Lining material supply pipe (made of copper) 18 ... Branch pipe 19 ・ ・ ・ Motor power cable 20 ・ ・ ・ Tow tube auxiliary wire 21 ・ ・ ・ Injection hole 22 ・ ・ ・ Injector 23 ・ ・ ・ 50A galvanized steel pipe (branch pipe) 24 ・ ・ ・ 90 ° screw-in type Drain pipe joint 25 ・ ・ ・ 90 ° large bend Y-shaped pipe joint 26 ・ ・ ・ Drain vertical pipe (main pipe) 27 ・ ・ ・ Launcher adapter 28 ・ ・ ・ Launcher 29 ・ ・ ・ Herrule gasket 30 ・ ・ ・ Pressure gauge 31 ... Air supply Tube 32 ... different diameters 90 ° Y-shaped pipe joint 33a, 33b ... 100A galvanized steel 34 ... projections A, C, D ... opening B ... lining start

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4D075 AC01 AG12 AG18 CA47 DC50 EA08 4F042 AA26 EA02 EA07 EA13 EA18 EA26

Claims (3)

[Claims] 1. A coating apparatus for spraying a lining material on the inner surface of a pipe, a flexible lining material supply pipe for supplying a lining material to the coating apparatus, and a lining material supply pipe included therein for lining work. When the traveling direction is the front, a guide portion provided on the front side of the coating device, and a flexible towing cable connected to at least one of the coating device and the guide portion and pulling the coating device at the time of lining construction. In the lining device having, the guide portion has a tube wall that forms a wavy vertical cross-section by continuous irregularities of the outer peripheral edge and the inner peripheral edge, and the outer peripheral edge is tapered, converging forward, and A lining device, which is a flexible guide tube. 2. A coating apparatus for spraying a lining material on the inner surface of a pipe, a flexible lining material supply pipe for supplying a lining material to the coating apparatus, and a lining material supply pipe including the lining material supply pipe. When the traveling direction is the front, a guide portion provided on the front side of the coating device, and a flexible towing cable connected to at least one of the coating device and the guide portion and pulling the coating device at the time of lining construction. A lining device comprising a conical transfer pig located at the rearmost position of the coating device, connected by a flexible strip, and converging on the coating device side. . 3. The coating apparatus has a driving device having a rotating shaft for transmitting a rotary motion incorporated in a casing, the rotating shaft protruding rearward of the casing, and a cup-shaped injector at a tip of the driving device side. The coating device according to claim 1 or 2, wherein the coating device is configured to be fixed so as to be concave, and to open a lining material supply pipe that penetrates the casing in the front-rear direction and supplies the lining material to the inside of the injector. Lining equipment.