JPH0634775U - Lining device - Google Patents

Abstract

(57) [Summary] [Purpose] Using a proper jig for leveling lining of repair pipes, automatically stop the progress of the resin and release the air pressure inside the pipes to always perform an appropriate leveling lining work. To do. [Structure] A starting-side device 10 is connected to one opening end 1a of a repair pipe 1 by air pressure to push the resin and pushes the resin, and air is blown through to the other opening end 1b.
The arrival side device 20 for collecting the excess resin is connected. Then, in the leveling lining work after the lining work, the tubular body 31, the resin receiver 33, and the male metal fitting 3 having the air escape hole 32 having the hole diameter corresponding to the bore diameter of the repair pipe 1 in the conduit of the arrival side device 20.
4. The leveling lining jig 30 including the female metal fittings 35 is provided, and when the resin reaches the arrival side, the progress of the resin is automatically stopped, and the air pressure in the cylinder is released to prevent the air from passing through.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention conveys a high-viscosity resin plug injected from one end of a pipe to a repair pipe such as a gas pipe or a water pipe buried underground at a constant speed by air pressure to form a thick and uniform lining film on the inner surface of the pipe. More specifically, the present invention relates to a leveling lining jig for automatically preventing blow-through of air during leveling lining work.

[0002]

[Prior art]

 In the above lining method, both ends of the repair pipe are excavated to expose the road surface, and the starting side device is connected to one of the open ends and the arrival side device is connected to the other open end. If the supply pipe branches and is taken out in the middle of the repair pipe, a pressure resistant stopper is attached to the take-out part to prevent compressed air from being discharged from the take-out part and making the lining impossible. Block it. Then, by injecting the epoxy resin into the repair pipe by the air pressure of compressed air in the starting side device and pushing the resin while adhering to the inner wall of the pipe, a uniform resin film is formed over the entire length of the repair pipe. . In addition, the arrival side equipment is implemented so as to confirm the progress of the lining work from the arrival state of the excess resin and to collect the excess resin.

Further, in this lining method, since the resins have a property of not adhering to each other and adhering only to the inner wall of a heterogeneous pipe, a predetermined amount of the resin is injected in a plurality of times, and the resin film of the repair pipe is It is enforced to gradually increase the length. For this reason, in this lining, the film surface is appropriately disordered, with air always blown through. Therefore, in order to correct this disturbance on the film surface, after lining the entire length of the repair pipe, smoothing lining is performed several times to prevent further air blow-through. In this leveling lining, when the excess resin reaches the arrival side, it is necessary to stop the progress in the state of the resin plug and quickly release the air pressure in the pipe.

Conventionally, no special jig has been used as a means for performing the leveling lining. Therefore, when the operator visually confirms the arrival of the excess resin on the arrival side, the valve is closed and the progress of the resin is stopped. Immediately, a worker on the starting side is informed by a wireless device, etc., and work is performed to release the air pressure inside the pipe on the starting side.

[0005]

[Problems to be solved by the device]

 By the way, in the above-mentioned prior art, since the operator closes the valve on the arrival side and bleeds air on the starting side, a skilled worker is required. Particularly, in the leveling lining, the resin arrives at a relatively high speed and passes through the inside of the resin discharge hose, so it is difficult to close the valve. Further, the resin discharge hose on the arrival side needs to be prepared for a long time in order to prevent air escape due to the deviation of the valve closing timing, which causes a problem such as a lot of waste.

The present invention has been made in view of this point, and uses a jig suitable for leveling and lining repair pipes to automatically stop the progress of the resin and release the air pressure in the pipes. The aim is to always perform proper leveling and lining work.

[0007]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention has a starting side device connected to one opening end of a repair pipe for injecting resin by air pressure and pushing the resin, and enables blow-out of air to the other opening end and to prevent excess resin. In the lining device to which the arrival side device that collects the arrival side device is connected, a leveling lining jig is provided in the pipe line of the arrival side device, and the leveling lining jig is a cylindrical body having an air escape hole of a predetermined hole diameter. The resin receiver that is attached to the air vent hole side of the tubular body and the connection fittings that are attached to both ends of the tubular body are detachable.

[0008]

[Action]

 Based on the above configuration, in the leveling lining work after the end of the lining work, the leveling lining jig is mounted in the pipeline of the arrival side device. For this reason, when the starting side device again injects the resin into the repair pipe and pushes it forward, the resin passes while adhering so as to correct the disturbance of the already formed resin film, and reaches the reaching side device to level it. Flow into the lining jig. Then, when the resin passes through the air escape hole of the cylinder, the air pressure inside the pipe immediately comes out of the air escape hole at that time, which automatically stops the progress of the resin and also the air pressure inside the cylinder. It will gradually descend, thus preventing blow-through of air, and the resin film of the repair pipe will be maintained in a uniform state by the leveling lining.

[0009]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. In Fig. 1, a schematic diagram of the entire equipment used to carry out the lining method in which a highly viscous resin plug injected from one end of the pipe is conveyed at a constant speed by air pressure to form a thick and uniform lining film on the inner surface of the pipe The reference numeral 1 is a repair pipe such as a gas pipe or a water pipe buried in the soil a at a predetermined depth. The repair pipe 1 is formed by excavating the soil a at both ends to form excavation holes b, so that both ends are opened and exposed. When there is a service che 2 as a take-out portion of the supply pipe 4 in the middle of the repair pipe 1, a pressure resistant stopper 3 is attached to the service che 2 so as to temporarily close the opening. The start side device 10 is connected to one opening end 1a of the repair pipe 1, and the arrival side device 20 is connected to the other opening end 1b.

In the start-side device 10, an air cylinder 11 that stores compressed air, a regulator 12 that reduces the air pressure, a pressure-feed speed control device 13, and an air pressure nozzle 14 are sequentially connected to a pressure hose 15. Then, in the case of the operation confirmation work before the execution of the lining construction method, the operation confirmation jig 18 is attached to the tip of the pneumatic nozzle 14. When the normal operation is confirmed and the lining method is applied, a resin injection pipe 17 is connected between the L-shaped launcher 16 at the opening end 1a of the repair pipe 1 and the pneumatic nozzle 14. It

In the arrival side device 20, a leveling lining jig 30 is connected to an L-shaped receiver 21 at the opening end 1b of the repair pipe 1 in the case of leveling lining work. The receiver 21 or the leveling lining jig 30 is connected to a resin deodorizer 23 via a short resin discharge hose 22.

In the perspective view of FIG. 2A and the sectional view of FIG. 2B, the leveling lining jig 30 will be described in detail. The leveling lining jig 30 includes a transparent acrylic resin tubular body 31. An air escape hole 32 is provided in the middle. Two mounting portions 31a are provided on the outside of the cylindrical body 31 in a radial direction, and a transparent semi-cylindrical resin receiver 33 is mounted and mounted on the mounting portion 31a on the air escape hole 32 side. A male metal fitting 34 and a female metal fitting 35 having a stopper metal fitting 35 a are attached to both ends of 31. Then, the male metal fitting 34 of the lining jig 30 is inserted into the female metal fitting 21a of the receiver 21 and connected by the stopper metal fitting 21b, and the resin discharge hose 22 is inserted in the female metal fitting 35 and similarly connected by the stopper metal fitting 35a. And then connected.

The configuration of each part of the leveling lining jig 30 will be described with reference to FIG. The cylindrical body 31 has threaded portions 31b at both ends, and a male fitting 34 and a female fitting 35 are respectively screwed thereto. Further, the semi-cylindrical resin receiver 33 can be deformed by its elasticity, and is detachably attached by hooking the grooves 33b of the flange portions 33a at both ends to the attachment portion 31a, whereby the tubular body 31, The male fitting 34, the female fitting 35, and the resin receiver 33 can be easily disassembled and assembled.

Here, when the diameter of the repair pipe 1 is relatively thin, for example, 40 mm and 50 mm, the lining speed is high and the resin film is thin, and when it is 80 mm and 100 mm, the lining speed is slow. It is controlled to form a thick resin film. Therefore, in order to properly release the air pressure in response to such a change in the thickness of the resin film, a cylinder body 31 having an air escape hole 32 having a hole diameter of, for example, 3 mm corresponding to a small diameter, and a cylinder body having a large diameter, for example, 3 It has a cylindrical body 31 ′ having an air escape hole 32 ′ having a hole diameter of 5 mm. Then, depending on the diameter of the repair pipe 1, either one of the cylindrical bodies 31 and 31 'is selected and used.

Next, the work for carrying out the lining method of this embodiment will be described. First, as a preliminary preparation before execution, the operation confirmation jig 18 is attached to the tip of the pneumatic nozzle 14 in the starting side device 10, and the starting side device 10 is actually operated in this state. At this time, it is checked whether the lining speed in the pressure feeding speed control device 13 matches the set value to confirm the operating state. Then, when the normal operation of the starting side device 10 is confirmed, the lining method is actually carried out, and the work in this case will be described.

First, the operation confirmation jig 30 is removed from the pneumatic nozzle 14, and the resin injector 17 filled with the resin is mounted between the pneumatic nozzle 14 and the launcher 16 as shown in FIG. Further, in the arrival side device 20, the resin deodorizer 23 is connected to the receiver 21 at the opening end 1b of the repair pipe 1 via the resin discharge hose 22, and thus the starting side device 10 arrives via the repair pipe 1. The lining work can be performed by communicating with the side device 20.

Then, when the air cylinder 11 is opened to supply the compressed air c, the compressed air c acts on the resin of the resin injector 17 at a high pressure by the pneumatic nozzle 14, whereby the resin is injected into the repair pipe 1. . Then, the resin plug d of the resin mass pushes inside the pipe, and the resin moves while adhering to the inner wall of the pipe to form the resin film e.

In this case, the controller 13 controls the air pressure to be high when the resin plug d is large and the resistance is high, and the air pressure is reduced to a constant lining speed when the amount of the resin plug d is decreased. The resin film e is uniformly formed. Further, when the resin runs out on the way and air blows through, the pressure-feeding speed control device 13 automatically stops. Then, when the resin injector 17 is replaced with a new one and restarted, the resin will pass through the lined section inside the repair pipe 1 due to its nature, and the resin film e will gradually extend from the point where it is not yet processed and will adhere. Will be formed.

Therefore, by repeating such work several times, the resin film e is formed and lined over the entire length of the inner wall of the repair pipe 1. When the end of the repair pipe 1 is completely lined, excess resin passes through the resin discharge hose 22 from the receiver 21 of the arrival side device and enters the resin deodorizer 23, causing blowout of air. Therefore, the pressure feeding speed control device 13 automatically stops and the lining work is completed.

In the above-mentioned lining work, the film surface is always disturbed due to the blow-through of air, so that after this, a further leveling lining work is performed. Therefore, first, when the repair pipe 1 is, for example, thin, one tube body 31 is selected in the leveling lining jig 30, and a male metal piece 34, a female metal piece 35, and a resin receiver 33 are attached to the tube body 31 to be integrated. Be assembled in a proper manner. Then, as shown in FIG. 1, the leveling lining jig 30 is connected between the receiver 21 of the repair pipe 1 and the resin discharge hose 22.

After the preparation is completed in this way, the resin injector 17 is mounted as in the case of the lining work described above, the starting side device 10 is operated, and the resin plug d is repaired by the pneumatic pressure of the compressed air again. Push forward. Then, the resin plug d passes through the repair pipe 1 and reaches the arrival side device 20 at a high speed while adhering little by little so as to correct the disorder of the already formed resin film e. By the way, in this case, by connecting the leveling lining jig 30 to the receiver 21, the resin plug d flows into the resin cylindrical body 31 of the leveling lining jig 30, and almost no resin adheres. There will be no passing.

Therefore, as shown in FIG. 4, when a large amount of resin plugs pass through the air escape holes 32 of the cylindrical body 31, the compressed air c in the pipe immediately escapes from the air escape holes 32, which causes The resin plug d maintains this state and the progress automatically stops. Further, the air pressure inside the cylinder is gradually decreased by the air escape hole 32, and thus the blowout of air is prevented, and the resin film e of the repair pipe 1 is held in a uniform state by the leveling lining. . On the other hand, when the air is released, a part of the resin is ejected from the hole 32 to the outside, but the resin is collected by the resin receiver 33 and is prevented from scattering.

In the above-mentioned leveling lining work, when the diameter of the repair pipe 1 is large, the in-cylinder air pressure is low and the lining speed is controlled to be slow. In, a cylindrical body 31 ′ having an air escape hole 32 ′ having a large hole diameter is used. Therefore, also in this case, when the resin plug d passes through the air escape hole 32, the low in-cylinder air pressure quickly escapes through the hole 32 'having a large hole diameter, and the same operation is performed.

Although the embodiment of the present invention has been described above, the structure of the leveling lining jig is not limited to this.

[0025]

[Effect of device]

 As explained above, according to the present invention, the high-viscosity resin plug injected from one end of the pipe is conveyed at a constant speed by air pressure, and the lining method is applied to form a thick and uniform lining film on the inner surface of the pipe. In the lining device, the leveling jig is used in the leveling lining work, and the air pressure inside the pipe is released when the resin reaches the arrival side. The air pressure drops and blow-through of air is prevented, so the leveling lining work can be performed reliably. In addition, this function of the leveling lining jig simplifies the work by eliminating the valve closing work by the worker on the arrival side and the air discharge work by the worker on the start side, and shortens the resin discharge hose.

The leveling lining jig has a cylindrical body provided with an air escape hole having a predetermined hole diameter, and has a structure in which a resin receiver and a connection fitting are attached to the cylindrical body, so that the structure is simple and cleaning is easy. It's easy. The air vent hole of the cylinder is selected and used according to the diameter of the repair pipe, so that even if the thickness of the repair pipe changes, the leveling lining can always be performed reliably.

[Brief description of drawings]

FIG. 1 is an overall side view showing an embodiment of a lining device according to the present invention.

FIG. 2 is a perspective view and a cross-sectional view showing the structure of a leveling lining jig.

FIG. 3 is an exploded perspective view of the equalizing lining jig.

FIG. 4 is a cross-sectional view showing a state where the progress of the resin is stopped and the air pressure in the pipe is lowered by the leveling lining jig.

[Explanation of symbols]

 1 Repair Pipe 1a, 1b Opening End 10 Starting Side Device 20 Reaching Side Device 30 Leveling Lining Jig 31 Cylindrical Body 32 Air Release Hole 33 Resin Receptor 34 Male Metal Fitting 35 Female Metal Fitting

Claims (2)

[Scope of utility model registration request] 1. A starting-side device for injecting and pushing resin by air pressure is connected to one opening end of the repair pipe, and an arrival-side device for allowing excess air to be blown and collecting excess resin at the other opening end. In the lining device that is connected to, a leveling lining jig is provided in the pipeline of the arrival side device,
This leveling lining jig has a tubular body having an air vent hole of a predetermined bore diameter, a resin receiver attached to the air vent hole side of the tubular body, and connection fittings attached to both ends of the tubular body, which are detachable. A lining device characterized by being configured. 2. The lining device according to claim 1, wherein the leveling lining jig has a plurality of cylindrical bodies having different hole diameters corresponding to changes in the diameter of the repair pipe.