JPS6346800Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a device for removing water accumulated in long pipes, and is particularly used when lining underground pipes such as gas pipes and water pipes. It is suitable for use in draining water that has accumulated in pipes.

When lining a conduit, a cylindrical lining material is crimped onto the inner surface of the conduit using an adhesive, and a hose with numerous fine pinholes is inserted into the lining material. Pressurized steam is sent in to leak between the hose and the lining material through the pinhole, and the adhesive is heated and cured by the heat, thereby bonding the lining material to the inner surface of the pipe. ing.

However, in this method, the pressurized steam leaking from the hose condenses inside the lining material.
Since it accumulates in the lining material, it must be discharged. The present invention was devised for this purpose.

Conventionally, for this purpose, a pig with a diameter approximately equal to the inside diameter of the pipe was inserted into the pipe, and the pig was pulled through the pipe with compressed air or a string to drain the water. However, since the pig has a diameter that approximately matches the inner diameter of the tube, if the tube has a variation in diameter or an irregularly shaped portion, the pig cannot pass through. Furthermore, since the pig does not have the function of wiping the inner surface of the pipe, it is not possible to prevent a small amount of water from remaining inside the pipe.

Another simple method is to tie a piece of cloth or sponge to the end of a string and pull it through the pipe to drain the water. However, the long pipe sometimes loses its shape or breaks off in the middle, making it impossible to drain the water completely. In particular, when force is applied to a rag or sponge inside a pipe, the rag or sponge is pulled and its diameter becomes narrower, making it impossible for it to adhere tightly to the inner surface of the pipe, resulting in water being left behind.

The present invention was devised in view of the above circumstances, and it is an object of the present invention to provide a novel device that can completely remove water within a long pipe.

Therefore, in the present invention, a flexible string-like material is inserted into the center of the water-absorbing body of a sponge, and a cylindrical cloth is then placed on the outside of the material to remove water by 10 to 30% of the inner diameter of the tube from which water is to be removed.
The cylindrical cloth has a large diameter, and both ends of the cylindrical cloth are squeezed and fixed to the string-like object, and both ends of the string-like object are made to protrude, and the protruding portion is connected to a string-like long object inserted through the tube. It is characterized by:

The present invention will be explained below with reference to the drawings. Reference numeral 1 is a flexible string-like material which is connected in a ring shape, the central portion 2 of which is folded flat, and loops 3, 3' are formed at both ends. Reference numeral 4 denotes a sponge sheet, which is wound in a cylindrical shape around the flat portion 2 of the string-like material 1 to form a water absorbent body 4'. Reference numeral 5 denotes a cylindrical cloth, which is placed over the outside of the water absorbent body 4', and its both ends are tied and fixed to the string-like material 1 by a thin string 6. The loops 3 and 3' of the string-like material 1 are made to protrude from both ends of the cylindrical cloth 5. Therefore, the diameter of the device 7 of the present invention is 10 to 30% larger than the inner diameter of the tube. Further, it is preferable that the diameter thereof cannot be compressed by more than 50%.

This instrument 7 has a tube 8 as shown in FIG.
The loop 3,
3' are tied together with a string 10.

When using the present invention, the string-like elongated object 9 is pulled to draw the instrument 7 into the tube 8. At this time, since the instrument 7 is 10 to 30% larger than the inner diameter of the tube 8, it is compressed by the inner wall of the tube 8, and is pressed against the inner surface of the tube 8 by the appropriate elasticity of the water absorbing body 4'.

In this state, when the string-like long object 9 is pulled and the device 7 is moved through the tube 8, the water that has accumulated in front of the device 7 is pushed forward and discharged, and some remaining water is also transferred to the water absorbent body 4'. absorbed and removed. Also equipment 7
If the water is not removed sufficiently with 1, add 1
It is also possible to remove water even more completely by tying one or more instruments 7 to a string-like elongate 9 and passing a plurality of instruments 7 through the tube 8 at the same time.

Since the present invention has the above-described structure, the device 7 advances while closely contacting the inner surface of the tube 8 to push out and eliminate the water inside the tube 8, and the cylindrical cloth 5 on the surface is used to protect the tube 8. Since water is absorbed into the water absorbing body 4' by wiping the inner surface of the pipe 8, even the smallest amount of water inside the pipe 8 can be completely removed. Furthermore, the string-like object 1 passes through the inside of the instrument 7, and this string-like object 1 bears the tensile force, so when the instrument 7 is pulled, the instrument 7 stretches and becomes thinner in diameter, creating a gap between it and the inner surface of the tube 8. There is no possibility that the water removal function will deteriorate due to load.

In addition, since the instrument 7 passes through the tube 8 in a compressed state, even if the tube 8 has some variation in diameter or irregularly shaped parts, it can easily follow the inner surface of the tube and proceed while wiping the inner surface. can.

Moreover, by tying a plurality of instruments 7 to a long string-like object, water can be removed more completely, and there is no need for separate processes for passing the plurality of instruments 7 into the pipe, but it can be done in one step. It can be carried out. Further, the instrument 7 pulled out from the tube can be easily removed from the string-like elongated object 9 by cutting the string 10, and can be reused.

Furthermore, by passing this device through a pipe line that has been lined, it can be confirmed that at least enough flow path is available for this device to pass through, and it can also be used to inspect whether the lining work has been carried out correctly. It can also serve as If the instrument cannot pass through the tube for some reason, the instrument can be easily removed by pulling the string-like long object from the opposite direction.

Furthermore, since the outer periphery of the instrument of the present invention is covered with a flexible cylindrical cloth and no hard objects such as metal are used, there is no risk of damaging the inner surface of the tube or lining material during use.

As mentioned above, the present invention is extremely effective and convenient as a device for removing water in pipes, and has a simple structure and can be provided at low cost. It is not only suitable for use in lining construction, but also can be widely used to remove water in general pipes.

What is shown in FIG. 5 is another embodiment of the present invention. In this example, disks 11, 11' made of flexible elastic material such as rubber are fitted into the string-like material 1 at both ends of the water absorbent body 4'. In this example, the discs 11, 11' are connected to the binding portions 12, 12' of the string-like material 1 and the cylindrical cloth 5, and the discs 11, 11'.
A knot 13 of the string-like object 1 formed inside 1',
13' so that it cannot move relative to the string-like object 1, it is possible to prevent the shape of the water absorbent body 4' from collapsing when a load is applied to the device 7. can. Moreover, since the diameter of the instrument 7 is regulated by the disks 11 and 11', and it does not shrink excessively due to external force, the above-mentioned flow path inside the pipe can be confirmed more reliably. It is something.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the device of the present invention, in which FIG. 1 is a front view, FIG. 2 is a longitudinal sectional view at the center, and FIG. 3 is a lateral sectional view at the center. Fourth
The figure shows how the device of the invention is used. FIG. 5 is a central vertical sectional view showing another embodiment of the device of the present invention. 1... String-like object, 2... Flat part, 3, 3'...
Loop, 4... Sponge sheet, 5... Tubular cloth, 9... String-like long object, 11, 11'... Disc.

Claims (1)

[Claims for Utility Model Registration] 1. A flexible string-like material is inserted into the center of a sponge water-absorbing body, and a cylindrical cloth is placed on the outside of the material to remove water by 10 to 30% of the inner diameter of the pipe. The cylindrical cloth has a large diameter, and both ends of the cylindrical cloth are squeezed and fixed to the string-like object, and both ends of the string-like object are made to protrude, and the protruding portion is connected to a string-like long object inserted through the tube. A device for removing water from a pipe, characterized by: 2. The utility model according to claim 1, characterized in that the string-like object is annular, and in a folded state, the central part thereof is inserted into the water absorbent body, and loops at both ends protrude. A device that removes water from pipes. 3. The device for removing water in a pipe according to claim 1 of the utility model registration, characterized in that the diameter cannot be compressed by more than 50%. 4. The device for removing water in a pipe according to claim 1, characterized in that flexible elastic discs are fitted to the string-like material at both ends of the water absorbing body. 5. The device for removing water in a pipe according to claim 1, wherein the water absorbing body is formed by winding a sponge sheet around the string-like material.