JPS61262294A - Reclamation device for pipe - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to a pipe rehabilitation device, and particularly to a large diameter pipe rehabilitation device.

Conventional technology Generally speaking, when a pipe has been used for a long period of time and becomes obsolete due to various deposits such as rust and scale adhering to its inner surface, the pipe is renovated by cleaning and removing the deposits and lining the pipe. There is. For example, in the case of large diameter pipes such as 5m inside diameter, in order to perform rehabilitation work, a worker wearing a mask enters the pipe and cleans it by sandblasting, etc., but the work is completed completely because the pipe is hidden from view by a shovel. I couldn't do it. In addition, since lining is done by workers spraying epoxy resin paint, etc., workers using solvents such as thinner are prone to oxygen deficiency accidents, and those with allergic constitutions may experience swelling on their faces and hands. There are some difficulties.

Problems to be Solved by the Invention One object of the present invention is to provide a pipe rehabilitation device that can automatically perform rehabilitation work on the inner surface of a large diameter pipe without the need for a worker to enter the pipe. It is something to do.

Another object of the present invention is to provide a pipe rehabilitation device that allows rehabilitation work on the inner surface of a large diameter pipe to be carried out extremely easily and completely.

Means for Solving the Problems The present invention is a pipe rehabilitation device, which includes a support that can move within the pipe in the axial direction of the pipe, and a support that is rotatable around the pipe axis. a rotary cylinder which is supported and bent so that its tip approaches the inner surface of the pipe; a driving means for driving the rotary cylinder; There is a scraping means for scraping off the kimono by the rotation of a rotary cylinder, and an abrasive material sent along the rotary cylinder is removed from the tip by compressed air in order to remove the residue of the pipe scraped by the scraping means. a polishing means for polishing by ejecting paint from the rotary cylinder, a suction dust collecting means for guiding the removed deposits and the abrasive used for polishing to a dust collector along the rotary cylinder, and a polishing means for supplying paint along the rotary cylinder. The present invention provides a pipe rehabilitation device characterized in that it includes a lining means for injecting water onto the inner surface of the pipe.

Embodiment In one embodiment of the present invention shown in FIGS. 1 to 8, 90
indicates a large diameter pipe that will be rehabilitated. Reference numeral 10 denotes a storage device for holding and supplying various materials for rehabilitation of the pipe and for storing and holding various wastes generated during rehabilitation, and is constructed as described below. That is, 11 is a casing.

A plurality of legs 12 extend radially from the casing to hold the casing 11 approximately in the center of the pipe 90, and are expanded and contracted by a hydraulic cylinder 13 to adapt to the pipe 90. , wheels 14 are provided at the outer end.

A generator 16 and an electric motor 17 are provided in the casing 11 and are driven by an engine 15 to supply electric power.
The storage device 10 is moved within the pipe 90 by transmitting rotation to the pipe 4 . The casing 11 further includes a compressor 18, an abrasive tank 19 containing an abrasive such as sand, and an abrasive delivery device 20 configured to deliver the abrasive using compressed air from the compressor 18.
, a main agent tank 21 containing the main agent of the epoxy resin paint;
Hardening agent tank 22 containing a hardening agent for epoxy resin paint
, pumps 23 and 24 that send out the main agent and curing agent from each tank 21 and 22, a dust collector 25 that collects dust by vacuum suction, and a hydraulic pump 27 that pressurizes and supplies oil from the oil tank 26 are provided. be. 30 is a hose assembly extending from the casing 11, and a concentric hose 31
．． 32, 33, and 34. 35 is a channel in the hose 31 through which the curing agent sent out from the pump 24 passes;
36 is a channel through which the main agent sent from the pump 23 passes between the hoses 31 and 32; 37 is a channel between the hoses 32 and 33;
A flow path 38 formed between the hoses 33 and 34 through which the abrasive material sent out by compressed air passes is a suction flow path formed between the hoses 33 and 34 and leading to the dust collector 25.

Reference numeral 39 denotes the entire processing device, which is constructed as described below. This processing device has a support body 41 connected to the casing 11 via a connector 40 made of a universal joint or the like that is rotatably connected to the casing 11 at three points.

This support has pipes 9 which extend radially and include processing devices 39.
A plurality of legs 4 maintained at approximately the center within 0
2, each leg is extendable and retractable by a hydraulic cylinder 43, and a wheel 44 is provided at the tip. Each wheel is driven by an electric motor 4 provided within a support 41.
5 to move the processing device 39 forward and backward. 46 is a pair of bearings 4 in the support body 41
It is a rotary cylinder that is rotatably supported horizontally by 7, and is driven in a predetermined direction via gears 50 and 51 by an electric motor 48 serving as a driving means. After passing through the rear part of the support 41, this rotary cylinder curves at an approximately right angle.
A part of the pipe 90 is made up of an extendable part 52 made of a bellows, and is extended and contracted by a hydraulic cylinder 53 so that the tip thereof approaches the inner surface of the pipe 90. The front end of the rotary cylinder 46 is rotatably connected to the rear end of the hose assembly 30 by a connecting fitting 54, and a similar flow path is formed, but the inside is concentrically shaped as follows. Divided. Hoses 55 and 56 are provided within the rotary cylinder 46 and communicate with the flow paths 35 and 36 to form flow paths through which the curing agent and the main agent pass, respectively.
In addition, a hose 57 is provided that communicates with the flow path 371C and serves as a flow path through which the abrasive material made of compressed air passes, and the rotating cylinder 46 forms a suction flow path that communicates with the flow path 38. .

If these hoses 55, 56, and 57 are flexible near the expandable portion 52, other portions may be replaced with rigid pipes.

A pair of wheels 6o are provided at the tip of the rotating cylinder 46, and are brought into contact with the inner surface of the pipe 90 by operating the hydraulic cylinder 53. This rotating cylinder 46 is shown in FIGS. 3 and 7.
It rotates in the direction of the arrow in the figure, and a plurality of scraping members 61 each having a number of protrusions 62 and forming a scraping means are attached to the peripheral edge of the tip in the rotating direction. It is provided by being attached to the plate 63. The scraping members 61 arranged on the inside are closer to the inner surface of the pipe 90 than those arranged on the outside, and the scraping members 61 are successively removed from the deposits 9 on the inner surface of the pipe 9o.
1 is scraped off.

The scraped deposit 91 is transferred from the suction port 64 to the rotating cylinder 46.
The dust passes through the suction channel 38 and is collected in the dust collector 25. 65 is attached to the mounting plate 63 and has a deposit 9
1 is a guide plate made of, for example, rubber, to prevent it from scattering to the outside. Reference numeral 66 denotes a spout port provided at the end of the hose 57 so as to eject the abrasive material sent out by compressed air from the abrasive material delivery device 20 and passed through the flow path 37 and the hose 57 using compressed air. Abrasive material delivery machine 20. Channel 37
, hose 57. The jet nozzle 66 constitutes a polishing means. The inner surface of the pipe 90, from which deposits 91 have been removed by the scraping member 61, is polished and cleaned by the abrasive material jetted from the spout 66. In this case, dust consisting of the abrasive material used for polishing and the removed deposits passes through the rotary cylinder 46 from the suction port 64 and is stored in the dust collector 25. Dust collector25. Flow path 382 rotating cylinder 4
6. The suction port 64 constitutes suction dust collection means.

Reference numeral 67 denotes a space that partitions off the side opposite to the rotating direction of the tip of the rotary cylinder 46, and a rubber partition plate 68 is provided at the tip. 69 is a mixer that simultaneously passes through a curved passage (not shown) and mixes the hardening agent and main agent sent through hoses 55 and 56 to form a paint; 70 is a mixer that uses the paint obtained in this mixer for cleaning. This is an injector that injects toward the inner surface of the finished pipe 90 to line it. Reference numeral 71 is a cover member that covers the sprayed paint so that it does not spread beyond a predetermined range. Hose 55, 56. Mixer 69 and injector 70 are connected to tanks 21, 22 and pumps 23, 24. Together with the flow channels 35 and 36, they constitute lining means. Reference numeral 73 denotes a plurality of video cameras, each of which is installed at an appropriate position, and is configured to communicate the finishing status of the rehabilitation work, the advancing/retracting status of the apparatus of the present invention, etc. to the outside world by radio signals.

In the configuration as described above, removing the deposit 91 by the scraping member 61 by rotating the rotating cylinder 46,
The abrasive material is ejected from the ejection port 66 using compressed air for polishing, is sucked through the rotary cylinder body 46 from the suction port 64 and becomes dust, and the paint is ejected from the injector 70 onto the surface of the pipe 90 that has been cleaned. The inner surface of the pipe 90 can be rehabilitated by slowly moving the storage device 10 and the processing device 39 simultaneously in the direction of the arrow in FIG. 1 while lining the pipe.

As shown in FIG.
It is also possible to form a paint mixer 69 and a paint sprayer 70 in this part for lining.

Reference numeral 76 denotes a flow path formed to suck in the deposits 91 scraped off by the scraping member 61.

Effects of the Invention As described above, according to the present invention, the rehabilitation work of cleaning and lining the inner surface of a large diameter pipe can be carried out automatically without the need for a person to enter the pipe, and this work can be carried out in an extremely safe manner. It can be seen that it has the advantage of being simple and complete.

[Brief explanation of drawings]

FIG. 1 is a side view showing an embodiment of the present invention arranged in a pipe, FIG. 2 is a partially omitted cross-sectional view along line 2-2 in FIG. 1, and FIG. 3 is a rear view. 4 is an enlarged cross-sectional view taken along line 4-4 in FIG. 2, FIG. 5 is an enlarged cross-sectional view taken along line 5-5 in FIG. 3, and FIG. 7 is a sectional view taken along the line 7-7 in FIG. 6, FIG. 8 is a perspective view showing a part of the scraping member, and FIG.
This figure is a sectional view corresponding to FIG. 7 showing another embodiment of the present invention with some changes. 10 is a storage device, 18 is a compressor, 19 is an abrasive tank, 20 is an abrasive delivery device, 21 is a tank for the main ingredient of the epoxy resin paint, 22 is a tank for the curing agent for the epoxy resin paint, 23 is a pump, 24 is a pump , 25 is a dust collector, 3
0 is a hose assembly, 39 is a processing device, 41 is a support body, 4
4 is a wheel, 46 is a rotating cylinder forming a suction flow path, 48
is an electric motor, 55 is a hose that serves as a flow path for passing the curing agent of the epoxy resin paint, 56 is a hose that serves as a flow passage for the main component of the epoxy resin paint to pass through, and 57 is a flow path that allows the abrasive material to pass through using compressed air. 61 is a scraping member, 64 is a suction port, 66 is a spout, 69 is a mixer, and 70 is an injector. Agent Patent Attorney Akira Katsube Figure 3 Figure 1 + Figure 5 Figure 7 → ? O2 Noguide

Claims (1)

[Scope of Claims] 1. A pipe rehabilitation device, which includes a support member that can move within the pipe in the axial direction of the pipe, and a support member that is rotatably supported and bent around the axis of the pipe. a rotating cylinder whose tip is close to the inner surface of the pipe;
A driving means for driving the rotary cylinder; a scraping means attached to the tip of the rotary cylinder to scrape off deposits on the inner surface of the pipe by rotation of the rotary cylinder; A polishing means for polishing the pipe by jetting the abrasive material sent along the rotary cylinder from the tip using compressed air to remove the remaining deposits from the scraped pipe, and the removed deposits and the abrasive material used for polishing. A pipe rehabilitation device comprising: a suction dust collection means for guiding paint along the rotary cylinder to a dust collector; and a lining means for supplying paint along the rotary cylinder and spraying it onto the inner surface of the polished pipe. Device. 2. The device according to claim 1, characterized in that it includes adjustment means for bringing the tip of the rotary cylinder closer to the inner surface of the pipe. 3. The apparatus according to claim 1, wherein the lining means has a flow path for supplying a base agent and a curing agent respectively along the rotating cylinder, and a flow path for supplying the base agent and curing agent through the flow path. 1. An apparatus comprising: a mixer for passing agents through and mixing them to form a paint; and an injector for spraying the paint.