JPS6325145Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention fixes one end of the tube to the entrance of the pipe, and moves the tube into the pipe by using fluid pressure or by the fluid pressure and the pulling action of a rope inserted into the uninverted tube. This invention relates to a joint for connecting an inverter and a conduit in a tube reversal lining device which forms a lining film on the inner wall surface of a conduit by inverting the inverted tube.

FIG. 1 shows an outline of the conventional tube inversion lining method, in which an uninverted tube 02 is wound around a drum 03 in an inverter 01, and the tip of this uninverted tube 02 is connected to a pipe line 04 as shown in FIG. The inlet of the tube is fixed using the fixing ring 05 to the tapered part, and the water pressure of the reversing liquid injected into the reversing device 01 is applied to the inside of the tube 06 to reverse the uninverted tube 02, and the inner surface of the uninverted tube 02 is The inverted tube is adhered to the inner wall surface of the conduit 04 using the applied adhesive. If the inner diameter of the conduit 03 is small and there are many bends, insert a tow rope 07 using a thread into the uninverted tube 02, and pull this rope 07 from the outlet side of the conduit with a winch 08. In some cases.

In the tube inversion lining method carried out as described above, a socket 09 is used as shown in FIG.
9 closes the fixed part of the tube using the fixed ring 05 described above, and the fixed ring 0
Since the tube is directly fixed to the entrance of the pipe line 04 with the fixing ring 05, there is a gap in the part fixed with the fixing ring 05 due to scratches on the sealing surface on the pipe line side, and the reversing liquid flows through this gap due to the water pressure to the tube. Even if it were to flow between the inner wall surface of the conduit 04 and the inner wall surface of the conduit 04, this would not be detected. As a result, the reversal liquid enters the pipe line, causing a problem of poor adhesion.

From this point of view, the present invention provides an inverter and a conduit that can be detected immediately when the inverted liquid leaks, and that prevents the leaked inverted liquid from flowing between the inner wall surfaces of the tube and the conduit. The purpose is to obtain a joint for connection.

The configuration of the present invention will be described in detail below. A mounting ring is fixed to the outer periphery of the inlet side of the conduit, a sleeve mounting hole is provided in the center for fixing the tip of the uninverted tube, and the sleeve is mounted on the upper part. A main body that forms a socket threaded portion surrounding the hole and is placed on the mounting ring at a distance, and the mounting ring and the main body are arranged so that the distance between the mounting ring and the main body can be fixed and releasably adjusted. A mounting ring is attached to the inlet side of the conduit, the main body is placed on top of the ring at a distance, and the mounting ring and the main body are connected by the linking member, which is provided through the main body. Fix the tip of the non-inverting tube to the upper entrance of the through hole, and finally connect the connection mouthpiece on the inverter side to the main body using a socket, and apply the pressure of the reversing liquid (usually soapy water) to the non-inverting tube. The uninverted tube is then inverted and advanced into the conduit. When the reversal work is completed, insert a cutting blade between the main body and the mounting ring to cut the tube, remove the mounting ring from the pipe, and then attach the end of the tube to the entrance of the pipe with the fixing ring. Fix the tube using

An embodiment of the present invention will be described in detail below with reference to the attached FIGS. 3, 4, and 5. 1 has a threaded portion 2 cut into the inner surface to be screwed into a thread formed on the outer periphery of the entrance of the conduit;
This is a mounting ring made of synthetic resin (polyethylene in the example) with a stepped portion 3 formed on the outer periphery. Note that this attachment ring may be made of a metal surface coated with synthetic resin. 4 is a flange having a hole 5 in the center that engages with the stepped portion 3 of the mounting ring 1 from below, and screw holes 6 at three locations on the outer periphery; 7 is a flange with stopper pins 8 for spacing setting projected at three locations on the lower surface; A socket threaded portion 9 is provided protruding from the upper surface, a blank hole 10 is provided on the outer periphery of the portion facing the screw hole 6 of the flange 4, and a sleeve attachment hole (through hole) 11 is provided in the center. At the same time, a fixing screw 19 is provided on the outer periphery,
and a main body placed above the mounting ring 1 at a distance; 12 is a sleeve mounting hole 11 of the main body 7;
A sleeve 15 is formed with a tapered hole 14 that is fitted in the interior and fixed with a screw 12 and tapers downwardly, and 15 is a screw 17 that is screwed into a connection mouthpiece 18 on the inverter side, and the main body. 7, a socket for connecting the main body 7 and the connection cap 18, and 20 a fixing member for fixing the tip of the uninverted tube in the tapered hole 14 of the sleeve 12. The ring 21 is a bolt (connection member) with a hexagonal head 23 that is inserted into the hole 10 of the main body 7 from above and whose threaded portion 22 is screwed into the screw hole 6 of the flange 4. In the figure, 24 and 25 are O-rings, 26 is mounting ring 1
This is a screw that fixes the flange 4 and the flange 4.

Next, an example of assembly (example of use) of the joint made up of the above-mentioned parts will be explained based on FIG. 3. 3 from below and screw the threaded part 2 of the mounting ring 1 fixed with the screw 26 to attach the mounting ring 1. Next, place the main body 7 on the top surface of the mounting ring 1 and determine the interval using the stopper pin 8. , the main body 7 and the flange 4 are fixed with bolts 21. Next, the sleeve 12 is fixed in advance in the sleeve mounting hole 11 of the main body 7 with screws 13, and the uninverted tube a pulled out from the inverter side
from the connection cap 18, fold the tip of this non-inverted tube a outward, insert the fixing ring 20 into the folded inside, and attach the sleeve 1.
The non-inverted tube a is fixed to the main body 7 by fitting the fixing ring 20 into the tapered hole 14 of No. 2, and then the main body 7 and the connection cap 18 are connected using the socket 15 for installation. finish.

When the above installation is completed, apply hydraulic pressure to the uninverted tube a from the inverter side via the connection cap 18 using the reversing liquid, and the uninverted portion of the uninverted tube a is caused by the driving force of this hydraulic pressure. are sequentially reversed. When the inversion of the uninverted tube a is completed in this manner, hot water is circulated within the inverted tube to solidify the adhesive between the inverted tube and the inner wall surface of the conduit 27. When this solidification work is completed, turn the bolt 21 to lift the main body 7 slightly upward, widen the gap between it and the flange 4, and apply tension to the end of the tube that is exposed between the gaps. After tensioning the tube, insert a cutting blade into the gap and cut the tube (see Figure 5).
Once this cutting is completed, remove the attachment ring 1 from the inlet of the conduit 27, fix the end of the tube within the inlet of the conduit 27 using the fixing ring 20, and Finish processing the inverted tube.

The joint according to the present invention has the structure and operation described above, and can be expected to have the following effects.

a) Since the tip of the non-inverting tube is fixed to the main body side rather than to the entrance of the conduit, even if the inverting liquid should leak from this fixed part, this leakage can be immediately discovered within the gap between the main body and the mounting ring.

b The leaked reversal liquid will flow out between the main body and the mounting ring, so it will not enter between the reversed tube and the conduit. Therefore, the problem of poor adhesion does not occur.

c. The exposed tube can be easily cut by inserting a cutting blade into the space between the main body and the mounting ring.

d) By using a material for the mounting ring that is difficult to adhere to, such as polyethylene, the mounting ring can be kept clean at all times.

[Brief explanation of the drawing]

Fig. 1 is a schematic explanatory diagram of a conventional tube reversal lining device, Fig. 2 is a sectional view showing an example of fixing a tube at the entrance of a conduit in the related art, and Fig. 3 is a schematic illustration of a conventional tube reversal lining device.
The figure is a cross-sectional view of the assembled joint showing an embodiment of the present invention. FIG. 3 is a cross-sectional view of the joint under tension. 1... Mounting ring, 4... Flange, 7... Main body,
15...Socket, 18...Connection cap, 20...
...Fixing ring, 21... Holt.

Claims (1)

[Claims for Utility Model Registration] A mounting ring fixed to the outer periphery of the inlet side of the conduit, a sleeve mounting hole for fixing the tip of the uninverted tube in the center, which is provided through the pipe, and this sleeve mounting hole is provided in the upper part. a main body that forms a surrounding socket threaded portion and is placed on the mounting ring at a distance; and the mounting ring and the main body are connected so that the distance between the mounting ring and the main body can be fixed and releasably adjusted. A coupling member for connecting an inverter and a conduit in a tube inverter lining device, comprising: a connecting member;