JP4351311B2 - Lining device for pipe inner surface - Google Patents

Description

[0001]
[Prior art]
As for the lining of an existing drain pipe or the like, for example, there is a lining device and a lining method for an inner surface of a pipe disclosed in JP-A-9-201560.
[0002]
The lining device disclosed here has a drive device having a rotating shaft for transmitting rotational motion built in the casing, and when the traveling direction at the time of lining construction is forward, the rotating shaft protrudes rearward of the casing. An ejector in which a cup-shaped injector is fixed at the tip thereof so as to be concave on the drive device side, and a lining material supply pipe for supplying a lining material to the inside of the injector is opened through the casing in the front-rear direction And a flexible traction cable that pulls the blast machine during the lining construction is connected to the front side of the blast machine, and a plurality of piercing lines and a lining material supply pipe are provided in front of the blast machine. A plurality of spherical spacers that are penetrated by a disc-shaped guide plate, a tow rope, and a lining supply pipe are arranged, and a spherical shape that is connected to the rear of the ejector at a predetermined interval. A lining apparatus arranged Iningupigu.
[0003]
In the lining method, the lining device is inserted in the order of the lining pig, the ejector, the guide plate, and the spacer from one end of the pipe to be lined, and then the pressurized air is supplied from one end of the pipe to the ejector. The lining material is transferred to the lining construction start end without being ejected, and then the lining material is ejected from the ejector while the lining device is pulled by the tow rope, thereby lining the inner surface of the pipe.
[0004]
This lining method using the lining device is capable of lining the inner surface of an existing pipe without disassembling the existing pipe because it is possible to line the pipe to be constructed by opening one end of the pipe. It's being used.
[0005]
[Problems to be solved by the invention]
However, the lining method can be applied to a 90 ° elbow with respect to the elbow joint of the pipe, but it cannot be applied to a 90 ° elbow having a smaller radius of curvature.
[0006]
This is because the disc-shaped guide plate is strongly fitted into a groove unique to the screw-type drainage pipe joint shown in FIG. There are two types of threaded drainage pipe joints, a 90 ° elbow elbow and a 90 ° elbow, and a 90 ° elbow is often used in a portion of a pipe line connecting a vertical pipe to a horizontal pipe. For this reason, when the said lining apparatus cannot be applied to a 90 degree elbow, there exists a problem that it will be necessary to remove a floor board, and a construction period and expense will increase. Especially in condominiums before 1975, drainage pipes are often installed behind the ceiling, and in order to repair the drainage pipes, the ceilings of downstairs dwelling units have to be broken, and there is a problem in terms of construction management. .
[0007]
In addition, in the 90 ° Y-shaped pipe joint shown in FIG. 12 or a pipe line in which another horizontal pipe is connected to the horizontal pipe by the 45 ° Y-shaped pipe joint shown in FIG. When the lining pig enters the inside of the projection 34 of the pipe branching portion projecting to the inside of the pipe joint, that is, the part a in FIG. 12 and the part b in FIG. The protrusion 34 may be caught and cannot be pulled back.
[0008]
The present invention has been made in view of the above points, and the lining of the inner surface of the pipe can be smoothly laid even in a pipe in which a 90 ° screw-in type drainage pipe joint or a 90 ° Y-shaped pipe joint is used. It is an object to provide an apparatus.
[0009]
[Means for Solving the Problems]
In order to solve the above problems, the present invention has the following configuration. In other words, a coating device that spreads 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, and a lining material supply pipe that contains the lining material, A guide portion provided on the front side of the coating device when it is in front, and a flexible traction cable connected to at least one of the coating device and the guide portion and pulling the coating device during lining construction. In the lining apparatus, the guide portion has a tube wall that forms a corrugated longitudinal section by the unevenness in which the outer peripheral edge and the inner peripheral edge are continuous, and has a tapered shape in which the outer peripheral edge converges forward and is flexible. It is a lining device characterized by being a guide tube having properties.
[0010]
In addition, a coating device that spreads 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, and a lining material supply pipe are included so that the traveling direction during lining construction can be adjusted. A guide portion provided on the front side of the coating device when it is in front, and a flexible traction cable connected to at least one of the coating device and the guide portion and pulling the coating device during lining construction. In the lining apparatus, the lining apparatus is provided with a cone-shaped transporting pig that is located at the rear of the coating apparatus and is connected by a flexible strip and converges on the coating apparatus side. Also good. The guide portion of the lining device is not particularly limited, but a more preferable result is obtained when the guide portion is configured as the guide tube.
[0011]
As the coating device, the jetting machine described in the prior art can be used. Therefore, the coating device incorporates a drive device having a rotation shaft for transmitting rotational motion in the casing, and when the traveling direction at the time of lining construction is set to the front, the rotation shaft protrudes rearward of the casing, and a cup is formed at the tip thereof. The structure may be a structure in which a cylindrical injector is fixed so as to be concave on the drive device side, and a lining material supply pipe that opens the casing in the front-rear direction and supplies the lining material to the inside of the injector is opened.
[0012]
The casing has a built-in drive device, and the distance between the rotation shaft of the drive device and the inner wall of the pipe to be lined is kept constant during lining construction. The casing of the coating device is preferably spherical in shape so that the entire coating device is turned 90 ° when passing through the 90 ° screwed drainage pipe joint, but the injector is not in contact with the back of the 90 ° screwed drainage pipe joint. It is more preferable that the rear portion is cut in a plane perpendicular to the traveling direction with respect to the lining construction direction.
[0013]
The drive device has a rotating shaft that performs a rotational motion and transmits the rotational motion. The lining material supplied to the inside of the injector fixed to the tip of the drive device by the rotational motion is dispersed on the inner surface of the pipe by the centrifugal force generated by the rotational motion. Accordingly, the driving device is capable of causing a rotational motion that generates the centrifugal force, and 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 because the lining construction start time can be specified.
[0014]
The injector has a cup-like shape, and has an injection hole for lining material injection on the outer periphery thereof. If the shape of the injector is a cup shape with a U-shaped cross section, the lining material supplied from the lining material supply pipe that opens to the inside of the injector can be received once, and the inner surface of the injector This is preferable because the lining material is jetted in the vertical direction.
[0015]
The lining material supply pipe is not particularly limited as long as the lining material supply pipe has flexibility in order to supply the lining material to the coating apparatus in the existing piping that forms a complicated pipe line. Further, a branch pipe for branching the lining material supply pipe may be provided in the front part of the casing, and a plurality of pipes that penetrate the casing and open to the inner side of the injector may be provided, or the lining from the branch pipe to the inner opening of the injector The material supply pipe does not need to have flexibility. In addition, when providing a some opening part, it is preferable that each exists in the point-symmetrical position with respect to a rotating shaft.
[0016]
The guide tube leads the coating device during lining construction. Since the shape is a tapered shape that converges forward from the coating device, the lining device pulled during the lining construction can move smoothly in the pipe without being fitted into the groove unique to the 90 ° screw-in type drainage pipe joint. In addition, a straight pipe portion having flexibility may be provided between the coating device and the taper portion, having a tube wall that forms a wave shape by the unevenness in which the outer peripheral edge and the inner peripheral edge are continuous. The guide tube may be either 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 resin or vinyl resin, and is preferably light and stretchable. The guide tube is bent as much as possible to one side, and the radius of curvature of the arc drawn by the inner peripheral edge with respect to the bending direction is R1, Radius When R2 is set, the minimum bending radius R1 / R2 of the guide tube obtained by dividing R1 by R2 is 2 or less, preferably 1 or less. Further, it preferably has a strength that does not break even when pulled in a bent state.
[0017]
The tow rope pulls the coating device at the time of lining construction. For this reason, it may be included in the guide tube together with the lining material supply tube connected to the front part of the coating device, or may be connected to the guide tube convergence end. Furthermore, if a flexible tube is used as a tow rope and connected to the guide tube converging end, the lining material supply tube can be included and the entire lining device is pulled in the direction of travel during lining construction. It is preferable because it can prevent tangling and bending.
[0018]
As the lining method, the method described in the prior art can be used. That is, inserting from one end of the pipe to be lining construction in the order of the coating device, the guide pipe, and then supplying air from one end of the pipe without conveying the lining material to the lining construction start end, Next, the lining material is ejected from the ejector while the lining device is towed by the tow rope, and the inner surface of the pipe is lined.
[0019]
When the coating device and the guide tube are transported to the lining construction start end by supplying air, when the traveling direction at the time of lining construction is set to the front, the coating device is coupled to the coating device behind the coating device by a flexible strip. A spherical transfer pig may be provided, and one or a plurality of transfer pigs may be provided. When a plurality of transfer pigs are provided, the transfer pigs may be connected by a flexible strip. It is further preferable that the conveying pig positioned at the rearmost side of the coating apparatus has a conical shape that converges on the coating apparatus side.
[0020]
The reason for this is that when a lining device is transported by supplying air from the other side pipe in a pipe line in which another side pipe is connected to the side pipe by a 90 ° Y-shaped pipe joint, If the shape of the pipe is conical, the transfer pig is less likely to enter the protrusion of the 90 ° Y-shaped fitting compared to the case where the shape of the transfer pig is spherical, and even if it enters, it is easily pulled back. Because it can.
[0021]
The reason why it is harder to enter the inside of the protrusion is presumed that the direction of the conical shape is more easily determined with respect to the airflow than the spherical shape and is less likely to bounce within the tube. Also, the reason for the easy pull back is that the angle formed by the strips connected to the conveying pig and the conical slope is obtuse, so the conical slope easily rubs the protrusion. It is assumed that the transfer pig is pulled back to the other horizontal tube.
[0022]
For the connection between the transporting pig and the coating device, protectors that project substantially the same as the injector are provided on both sides of the injector, and the protector and the transporting pig are connected by the strip. The protector protects the rotation of the injector. If the protector is 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 construction, the strip is evenly stretched and rotated. This is preferable because it can prevent the injectors from entraining the strips and prevent the protector from contacting the back of the elbow.
[0023]
The lining material used for the lining of the pipe inner surface may be any material that has fluidity under the lining construction conditions.
The supplied air is transporting the coating device and the guide tube to the lining construction start end, but when air is supplied even during the lining construction, the transportation pig receives resistance by the air supplied and pulls the coating device, The direction of the injector is fixed, and the transfer pig is also pulled by the coating device and lifts from the inner wall of the pipe, so that the coating film of the lining material is not damaged, and it is generated between the raised transfer pig and the inner wall of the pipe Airflow is preferred because it presses the applied lining material and makes it uniform.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS. In the explanation, the traveling direction at the time of lining construction is assumed to be the front and vice versa.
[0025]
(First embodiment)
FIG. 1 is a side view of a coating machine for 50A cited as an example of the present invention, and FIG. 2 is a side view of a coating machine for 100A.
[0026]
First, a lining material supply pipe 2 made of urethane and having a length of 15 m is connected to a coating device 1 for spraying the lining material on the inner surface of the pipe.
In front of the applicator 1, a guide pipe 3 made of a special olefin resin or vinyl resin and having a straight pipe portion and a tapered portion converging toward the front, and a traction tube 4 that pulls the applicator 1 during lining construction. Is connected.
[0027]
In the shape of the guide tube 3, the cross section of the converging end of the tapered portion is circular in both the 50A coating machine and the 100A coating machine, but the straight tube portion is preferably a circular tube shape but may be a square tube.
[0028]
Behind the coating device 1, a transfer pig 7 made of a special olefin resin or polyacetal resin is provided with a predetermined distance from the protectors 5 and 6 projecting on the coating device 1, and a strip 8 made of stainless steel wire. , 9, and further, a transport pig 10 is connected to the transport pig 7 by a strip 11 made of stainless steel wire. The transport pig 10 of the 50A coating machine is a thick polyethylene sheet processed into a conical shape. This is a fishing weight No. 10 with a diameter of 19.5 mm so that the transport pig 10 will not come off. The spherical body 12 is arranged so as to be covered with the conveying pig 10. The conveying pig 10 of the coating machine for 100A is a polyethylene ball having a diameter of 92 mm.
[0029]
Next, the structure of the coating apparatus and its peripheral parts will be described with reference to FIG. FIG. 3 is a side view of the coating apparatus 1 of the coating machine for 50A mentioned as an example of the present invention.
The coating apparatus 1 includes a casing 13. The casing 13 has a shape obtained by cutting the back of a 45 mm sphere with a plane perpendicular to the lining construction direction. From the center of the circle which is the cut end, a rotation axis is formed on a straight line connecting the center of the circle and the center of the sphere. A drive device (motor for 50A) 14 having a rotating shaft 15 is incorporated so that 15 protrudes. An injector 22 having a plurality of injection holes 21 is fixed to the outer peripheral portion of a cup-shaped cup at the tip of the rotating shaft 15 protruding from the casing 13.
[0030]
Two protectors (bars) 5 and 6 are fixed so as to be parallel to each other from the end of the circular plane on the rear side of the casing 13 around the rotation axis 15, and the tips of the protectors 5 and 6 are injectors. It has reached almost the same position as the tip of 22.
[0031]
A branch pipe 18 having a bamboo shoot hose joint is fixed to the front portion of the casing 13, and a lining material supply pipe 2 made of urethane and having a length of 15 m and a pipe inner diameter of 6.5 mm is connected to the front end of the branch pipe 18. Yes.
[0032]
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 and pass through the casing 13 in the front-rear direction and open to the inner side of the injector 22.
A motor power cable 19 made of a copper wire having a length of 15 m is connected to the 50A motor 14 and extends forward from the front portion of the casing 13. A pulling tube auxiliary wire 20 made of nylon-coated stainless steel wire having a length of 15 m is connected to the branch pipe 18 at one end and extends forward from the casing 13. Here, the lining material supply pipe 2, the motor power cable 19, and the pulling tube auxiliary wire 20 are bundled at a predetermined interval and stopped so as not to be displaced from each other.
[0033]
Next, the guide tube used in the present invention will be described. 4 to 6 are respectively a shape of a flexible tube used for the guide tube in the present invention and a sectional view thereof.
[0034]
The flexible tube shown in FIG. 4 has a shape in which a wavy tube 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 tube shown in FIG. 5 is a bellows. May be. Moreover, the shape of the flexible pipe | tube shown by FIG. 6 which is a bellows formed by coat | covering a spiral body with resin can also be illustrated. It is used as a guide tube by processing a flexible tube having these exemplified shapes.
[0035]
The prepared guide tube 3 is disposed in front of the coating apparatus 1. At this time, the guide tube 3 is disposed so as to include the lining material supply tube 2, the motor power supply cable 19, and the pulling tube auxiliary wire 20. In front of the guide tube 3, a traction tube 4 that is joined to the converging end of the guide tube 3 and encloses the lining material supply tube 2, the motor power cable 19, and the traction tube auxiliary wire 20 is disposed.
[0036]
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.
[0037]
Behind the coating device 1, conveying pigs 7, 10 are arranged via protectors 5, 6 and strips 8, 9, 11.
The conveying pig 10 of the coating machine for 50A is obtained by processing a thick polyethylene sheet to create a conical shape. In this conical shape, the diameter of the converging 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. By covering the spherical body 12 with the conical shape created in this manner so that the converging end of the conical shape is located on the coating device side, a transfer pig 10 is obtained.
[0038]
The lining material used is a thermosetting resin paint having a viscosity of 3.5 to 4.5 Pa · s.
Next, the lining of the pipe inner surface using the 50A coating machine will be described. FIG. 7 is a perspective view of a pipe provided as if it were a drain pipe of an apartment.
[0039]
The pipe used is a 50A galvanized steel pipe 23, which is connected by a 90 ° threaded drainage pipe joint 24, and connected to the drainage vertical pipe 26 by a 90 ° diameter bend Y pipe joint 25. This pipe cannot be disassembled or replaced because of the surrounding environment. Here, the point A of the 50A galvanized steel pipe 23 is cut to form an opening A. A launcher adapter 27 and a launcher 28 are connected to the opening A.
[0040]
A method of lining the pipe inner surface from the opening A to the point B shown in FIG. 7 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 then the launcher 28 to which the pressure gauge 30 and the air supply pipe 31 are connected is attached.
[0041]
Next, as shown in FIG. 8, the pulling tube 4 containing the lining material supply pipe 2, the motor power supply cable 19 and the pulling tube auxiliary wire 20 in advance is drawn into the ferrule gasket 29 having an operation hole at the closed end. The 50A coating machine is inserted into the launcher 28 in the order of the transfer pig 7, the coating device 1, and the guide tube 3, and finally the ferrule gasket 29 is attached to the launcher 28 body with a clamp.
[0042]
Next, 3-4 m from the air supply pipe 31 ^Three Supply air of / min. Further, air is also slightly supplied from the other openings C and D. With this airflow, the 50A coating machine is transported to point B, which is the lining construction start point. At this time, the lining material is not applied. When the 50A coating machine reaches point B, air escapes from point B in the vertical direction, and the numerical value of pressure gauge 30 decreases. From this, it can be determined that the 50A coating machine has reached point B.
[0043]
When the 50A coating machine reaches the point B at the lining construction start point, the 50A motor 14 is driven to rotate the injector 22. The rotation speed of the motor 14 for 50A 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 circumference of the pipe by the centrifugal force generated by the rotational motion, and the lining of the pipe inner surface is started.
[0044]
The start of lining is determined by the behavior of the current flowing through the 50A motor 14. When the lining material is supplied to the injector 22, the value of the current 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 load on the 50 A motor 14 increases and a larger driving current is required.
[0045]
When the lining starts, the 50A coating machine is pulled by winding the pulling tube 4 at a predetermined speed.
Air is also supplied from the air supply pipe 31 during lining construction. Since the conveying pigs 7 and 10 that are resisted by the supplied air pull the 50A coating machine backward, the direction of the injector 22 is always kept constant. The conveying pigs 7 and 10 have a function of generating an air flow between the pipe inner wall and pressing the lining material applied to the inner surface of the pipe to make it uniform.
[0046]
Here, the state of the coating machine for 50A passing through the 90 ° screw-in type drain pipe joint 24 will be described with reference to FIG.
The conveying pigs 7 and 10 receive air resistance by supplying air during lining construction. For this reason, the coating machine for 50A advances by being pulled, but extends in the front-rear direction by the tensile force generated by the air resistance of the transfer pigs 7 and 10.
[0047]
When the 50A coating machine passes through the 90 ° threaded drainage pipe joint 24, the preceding guide pipe 3 passes while rubbing the innermost side of the 90 ° screwed drainage pipe joint 24. At this time, the guide pipe 3 passes without being caught in a groove unique to the 90 ° screw-in type drain pipe joint 24 from its shape.
[0048]
Also, because of the air resistance that the transfer pigs 7 and 10 receive, a tensile force acts on the 50A coating machine in the front-rear direction. As the type drainage pipe joint 24 approaches, the 50A coating apparatus itself is twisted so that the protectors 5 and 6 protruding from the casing 13 are positioned symmetrically with respect to the plane including the drainage pipe. For this reason, when passing through the 90 ° screw-type drainage pipe joint 24, the coating device 1 always directs the injector 22 backward, and the strips 8, 9 are evenly stretched, so that the injector 22 is not entangled, and The applicator for 50A passes through the 90 ° screw-in type drainage pipe joint 24 without the protectors 5 and 6 coming into contact with the pipe joint. In this way, as the coating apparatus 1 passes through the 90 ° threaded drainage pipe joint 24, it smoothly changes its direction by 90 ° and passes through the 90 ° threaded drainage pipe joint 24.
[0049]
While constructing the lining as described above, the lining apparatus is pulled to the point A which is the lining construction end point, and the lining is constructed from the lining construction starting point B to the opening A which is the lining construction end point. 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 construction start point B to the opening A.
[0050]
(Second Embodiment)
Here, the use of the lining apparatus of the present invention in a drain pipe in which another horizontal pipe is connected to a horizontal pipe by a 90 ° Y-shaped pipe joint or a 45 ° Y-shaped pipe joint will be described with reference to FIG.
[0051]
FIG. 10 is a cross-sectional view as seen from above 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 90 ° Y-shaped pipe joint 32 having a different diameter 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 90 ° Y-shaped pipe joint 32 having a different diameter in order to convey the 50A coating machine.
[0052]
As shown in FIG. 10- (1), the coating machine for 50A has been transported from the 50A galvanized steel pipe 23 side by the supplied air. 10 has bounced and the transfer pig 10 has entered the 100A galvanized steel pipe 33a side. The 50A coating machine is the same as that of the first embodiment.
[0053]
The strip 11 connecting the transporting pig 10 and the transporting pig 7 enters the inside of the protrusion 34 of the 90 ° Y-shaped pipe joint 32 having a different diameter. Here, the 50A coating machine is pulled back.
[0054]
When the 50A coating machine is pulled, the converging end of the conveying pig 10 reaches the protrusion 34 of the 90 ° Y-shaped pipe joint 32 having a different diameter. At this time, as shown in FIG. 10- (2), the conveying pig 10 pulled through the strip 11 is slightly different in diameter from the projection 34 of the 90 ° Y-shaped pipe joint 32 so as to face the pulling force. Try to float up.
[0055]
At this time, as shown in FIG. 10- (3), the slope of the conveying pig 10 rubs up the protrusion 34 of the 90 ° Y-shaped pipe joint 32 having a different diameter, so that the 50A coating machine can be easily pulled back. Thereafter, the lining is applied in the same manner as in the first embodiment.
[0056]
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 has a projection similar to that of the 90 ° Y-shaped pipe joint having a different diameter. The same results as in the present embodiment can be obtained when the pipe is connected to a horizontal pipe by a 90 ° Y-shaped pipe joint having the same diameter or a 45 ° Y-shaped pipe joint having the same diameter and different diameters. obtain.
[0057]
【The invention's effect】
According to the present invention, when the lining device is transported by supplying air, it can be easily pulled back even if a transporting pig enters the inside of a projection such as a 90 ° Y-shaped pipe joint having a projection on the inside of the pipe joint. it can. In addition, when the lining is installed, the flexible guide tube with a taper shape leads the coating device, so the lining device moves smoothly without catching the groove unique to the 90 ° screw-in type drainage pipe joint, and the inner surface of the tube is lined. Can be constructed.
[Brief description of the drawings]
[Fig. 1] Side view of 50A coating machine
Fig. 2 Side view of 100A coating machine
FIG. 3 is a side view of a coating apparatus 1 of a coating machine for 50A.
FIG. 4 shows the shape of a flexible tube used for the guide tube in the present invention and its cross-sectional view.
FIG. 5 shows the shape of a flexible tube used for the guide tube in the present invention and its cross-sectional view.
FIG. 6 is a cross-sectional view of the shape of a flexible tube used for the guide tube in the present invention.
FIG. 7 is a perspective view of piping provided in consideration of the 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 Cross section of 90 ° screw-in type drainage pipe joint
Fig. 12 Cross section of 90 ° Y-shaped pipe joint
FIG. 13 is a sectional view of a 45 ° Y-shaped pipe joint.
[Explanation of symbols]
1 ... coating device
2 ... Lining material supply pipe (urethane)
3 ... Guide tube
4 ... Traction tube
5, 6 ... Protector
7, 10 ... Pig for transportation
8, 9, 11 ... strip
12 ... sphere
13 ... Casing
14 ... Driver (motor for 50A)
15 ... Rotating shaft
16, 17 ... Lining material supply pipe (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 drainage pipe joint
25 ... 90 ° large bend Y-shaped fitting
26 ... Drain vertical pipe (main pipe)
27 ... Launcher adapter
28 ... Launcher
29 ... Ferrule gasket
30 ... Pressure gauge
31 ... Air supply pipe
32 ... 90 ° Y-shaped pipe joint with different diameters
33a, 33b ... 100A galvanized steel pipe
34 ... Projection
A, C, D ... opening
B ... lining construction start

Claims (2)

A coating device 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 device, and a guide part containing the lining material supply pipe, and progressing during the lining construction A guide portion provided on the front side of the coating device when the direction is the front, and a flexible traction cable connected to at least one of the coating device and the guide portion and pulling the coating device during lining construction; In a lining apparatus in which a plurality of pipes are connected by a joint and used in a pipe line that cannot be disassembled and replaced, and the coating apparatus is transferred to the lining construction start end by supply air.
The guide portion is a tapered guide tube whose outer peripheral edge converges toward the front and has flexibility, and an outer peripheral edge between the tapered front outer peripheral edge and the coating device. And a guide tube defined by dividing the radius of curvature of the arc formed by the outer periphery on the inner side with respect to the bending direction of the guide tube by the radius of the guide tube, the inner periphery forming a wavy longitudinal section by continuous irregularities The minimum bending radius of the tube wall is 2 or less ,
It is located at the end of the coating device and is connected by a flexible strip so that it can be twisted with respect to the coating device, and converges on the coating device side for generating air resistance by supply air. A cone-shaped transfer pig is further provided,
At the time of lining construction, air is supplied from the front to the conical conveyance pig, and the conveyance pig passes through the place connected by the joint in the pipe line while being twisted with respect to the coating device. To
Lining equipment. The coating device incorporates a drive device having a rotation shaft for transmitting rotational motion in the casing, the rotation shaft protrudes rearward of the casing, and a cup-shaped injector is recessed on the drive device side at the tip thereof. The lining device according to claim 1, wherein the lining device is a coating device configured by opening a lining material supply pipe that is fixed to the casing and penetrates the casing in the front-rear direction and supplies the lining material to the inner side of the injector.

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