KR100719615B1 - Connector of pvc or pe double wall corrugated pipe for combined method - Google Patents

Abstract

The present invention relates to a connecting device for connecting high-density PE (polyethylene) double wall pipe, to facilitate the connection of the double wall pipe and ensure watertightness.

The present invention is provided with a flange pipe having a double wall tube fitted inward and inclined outwardly on the inlet side, and formed with a locking jaw outwardly, the flange tube is installed on both sides, and is in contact with the inclined surface of the flange tube. A urethane ring is fitted to the outside of the double wall pipe, and has a compression ring fitted into the inlet and outer sides of the flange tube and compresses the urethane ring, and is fitted to the compression ring to cover the latching jaw of the flange tube to compress the urethane ring by the compression ring. It is made by providing a bolt to make, the connection work is simple and watertight is guaranteed.

Double wall pipe, connection, flange pipe, urethane ring, compression ring

Description

Connector of PVC or PE double wall corrugated pipe for combined method}

1 is an exploded perspective view of the present invention

2 is a cross-sectional view of the coupling state of the present invention

3 is an exploded cross-sectional view of the present invention.

Figure 4 is a cross-sectional view of the double wall pipe is fitted to the connector of the present invention

Figure 5 is a cross-sectional view of the urethane ring fitted state of the present invention

Figure 6 is a cross-sectional view of the fitted state of the compression ring of the present invention

Figure 7 is a cross-sectional view of the bolted state of the present invention

8 is an enlarged cross-sectional view of the main portion of the present invention.

Figure 9 is a side cross-sectional view of a state in which the compression ring of the present invention is coupled

Figure 10 is a side cross-sectional view of a state in which another embodiment of the compression ring is coupled

11 is a cross-sectional view for explaining another embodiment of the present invention.

[Description of Symbols for Main Parts of Drawing]

1,2: double wall pipe 10: connector

11 support tube 12 flange tube

13: slope 20: urethane ring

30: compression ring 40: bolt

50: airbag

The present invention relates to a connecting device coupling method for connecting high-density PE (polyethylene) double wall pipe, the connection of the double wall pipe is easy and the air bag is installed inside the connecting portion to inject silicone or urethane foam to ensure watertightness while Do not soak into.

Commercially available high density PE double wall pipes are sewage pipes, water collecting pipes, and drainage pipes, and are widely used for sewage and stormwater sorting construction as household ships and drainage pipes, and have various diameters ranging from 150 to 2,200 m / m. It is possible to construct regardless of season, moisture, moisture, etc., which is advantageous for saving construction cost and shortening of air. It is strong in chemical resistance and light in weight.

These double wall pipes should be connected to each other because they are supplied with a certain length, and the existing connection method is a butt fusion method in which the fusion is connected after joining the ends of the double wall pipe, and the sockets are connected to the outside of the connection area for fusion. Socket fusion method, electric fusion method that uses a hot plate with heat wire embedded in the connection part, and then fusion by electricity, connection method using heat shrink film or band is used, but connection method using heat shrink film or band is not watertight It is not used because its quality is not guaranteed and the butt welding method or socket welding method requires special tools and heating devices for welding, but it can be applied to large pipes (over 300m / m), but it is practical to apply. There is an inconvenience.

In the case of PE pipe, not double wall pipe, watertight connection by rubber ring is used. However, this method is applicable only to small pipes of 200m / m or less. If it is guaranteed, but more than that, the aging phenomenon of the rubber is issued, which can not guarantee watertightness.

On the other hand, the most commonly used electric fusion method is a method of making a connection by winding a hot plate with a built-in hot wire around a pipe joint, fixing it with a compression band, and supplying electricity so that the hot plate is fused by heating of the hot wire. Watertightness is ensured and connection is excellent, but generators should be placed at the work site, and it takes a long time from heating to fusion because of the inconvenience of fixing the pipe without moving during fusion and heating. There is a problem.

The present invention is to provide a method of coupling the connecting device to ensure that the water is ensured while the work is done quickly and easily to solve this problem, the connection work of the double wall pipe is made easy and the air bag is installed inside the connection site silicon However, urethane foam does not penetrate and ensures watertightness.

The present invention is provided with a flange pipe having a double wall tube fitted inward and inclined outwardly on the inlet side, and formed with a locking jaw outwardly, the flange tube is installed on both sides, and is in contact with the inclined surface of the flange tube. A urethane ring is fitted to the outside of the double wall pipe, and has a compression ring fitted into the inlet and outer sides of the flange tube and compresses the urethane ring, and is fitted to the compression ring to cover the latching jaw of the flange tube to compress the urethane ring by the compression ring. In the coupling method of the double-wall pipe connecting device having a bolt to make, the inlet for injecting silicone or urethane foam into the flange tube, and the outlet to facilitate the injection by discharging the internal air during injection of the silicone or urethane foam Air in the area where the double walled tube abuts when forming silicone or urethane foam By inflating to make double wall pipe is ensured by the watertight so as to prevent each given block the abutting part silicone or polyurethane foam is flowing out to the inside of the double wall pipe.

The present invention is to connect the double wall pipe, but to maintain the watertight while simplifying the connection operation, provided with a connection pipe that is inserted into the double wall pipe is inserted, the connector has a certain length and larger diameter than the double wall pipe support The flange tube is welded and fixed to both sides of the tube. The flange tube forms an inclined surface inclined toward the inlet side toward the inlet side, and the inclined surface gradually increases the diameter of the inlet side, and forms a locking step on the outside of the flange tube. At the inlet side of the flange tube, keep the inside and the outside flat to a certain length.

When the double wall tube is inserted into the inner side of the connecting pipe, the urethane ring is inserted between the outer side of the double wall tube and the inclined surface of the flange tube, but the urethane ring has a wedge shape so that the urethane ring is fitted on the inclined surface of the flange tube. A c-shaped compression ring is inserted into the inside and the outside of the flange tube, and the compression ring is pulled toward the flange tube by the bolt, but the bolt is protruded to one side so that the bolt is caught on the locking jaw and the bolt is the bolt of the compression ring. Fit into the fittings and secure with nuts.

Here, the urethane ring is formed so that several protrusions are formed in the longitudinal direction inwardly, and the urethane ring is cut by the length of the outer diameter of the double wall pipe and heat-sealed to make a ring shape.

And it is advantageous that the compression ring is manufactured in one piece, but in some cases, it may be assembled into pieces of compression ring having a plurality of equal angles and then assembled.

The present invention is to prevent the infiltration of water by filling the silicone or urethane foam between the connecting pipe and the double wall pipe, and also to increase the fastening force of the connector by the self-adhesive force, and the inlet to the connector or flange pipe Form the outlet to fill the inside by filling the silicone or urethane foam with the inlet to be discharged to the outlet, in which case the silicone or urethane foam introduced into the inlet by inflating the airbag in the connection portion inside the double wall pipe of the double wall pipe Do not leak inside.

This invention will be described in detail based on the embodiment drawings.

The present invention after inserting the double wall pipe (1) (2) into the inner side of the connecting pipe 10, the welded and fixed flange flange 12 on both sides of the support pipe 11, the flange pipe 12 and the double wall pipe (1) The urethane ring 20 is sandwiched between (2) and the urethane ring 20 is compressed with a compression ring 30, but the compression ring 30 is to be compressed using a bolt 40.

The connection pipe 10 of the present invention is to weld fixed to the flange pipe 12 on both sides of the support pipe 11 having a diameter and a certain length that the double wall pipe (1) (2) can be interpolated, the support The front end of the double wall pipe (1) (2) abuts against each other in the inner center of the pipe (11).

The flange tube 12 has an inclined surface 13 formed inwardly, and the inclined surface 13 is formed to have a shape in which the diameter becomes wider toward the inlet side, and the locking jaw 14 is disposed outside the flange tube 12. To form a so that the head portion of the bolt 40 can be covered.

Urentan ring 20 is fitted to the outer side of the inclined surface 13 and the double wall tube 1 of the flange tube 12 so that the urethane ring 20 has a wedge shape, the inner side of the urethane ring 20 Several projections 21 are formed in the circumferential direction.

The urethane ring 20 is continuously produced in a straight form, cut to the length covered by the outer diameter of the double wall tube (1) to have a ring shape by gluing both ends to protrude outward in the fusion process. The site is cut and used.

Compression ring 30 having a U-shaped cross section is to be fitted into the inner and outer sides of the flange tube 12, a plurality of bolt fitting portion 31 is formed on the outside so that the bolt 40 is fitted, the compression ring 30 to compress the urethane ring 20.

It is advantageous to manufacture the compression ring 30 in one piece, but when the double wall tube 1 has a large diameter, it may also compress the urethane ring 20 by dividing into several equally divided compression ring pieces 30a as shown in FIG. 10. If you have any.

However, integrating the compression ring 30, there is a problem that can not be used when the compression ring 30 is made of a plurality of compression ring pieces (30a) in advance, or if the diameter of the double wall pipe (1) is not constant. When the compression ring piece 30a is used, the error of the diameter can be sufficiently covered, and the workability is excellent in a narrow space.

After the compression ring 30 is inserted into the flange tube 12, the present invention fills the bolt 40, but the head of the bolt 40 fitted to the bolt fitting portion 31 is caught by the locking jaw 14. By filling and fixing the nut 41, the compression ring 30 is pushed inward to compress the urethane ring 20.

Meanwhile, in the present invention, a space is formed between the double wall pipe 1 and the connection pipe 10, and filthy water and waste water flowing through the double wall pipe 1 flow into the space to be in contact with the urethane ring 20. If the ring 20 contains toluene or benzene in the sewage and waste water, it may be damaged. Fill the gap between the double wall pipe 1 and the connection pipe 10 with silicone or urethane foam 55 so that the sewage may be urethane. Avoid contact with the ring 20 while leaking.

To this end, an inlet 51 and an outlet 52 are formed in the support tube 11 or the flange tube 12, but the inlet 51 and the outlet 52 are spaced apart from each other to be introduced into the inlet 51. The foam 55 discharges the internal air to the outlet 52 and can be filled between the double wall pipe 1 and the connection pipe 10, and when the silicon or urethane foam 55 is discharged to the outlet 52, the double wall pipe Since the state is sufficiently filled between the (1) and the connection pipe 10, the inlet 51 and the outlet 52 are blocked to allow the silicone or urethane foam 55 to harden, so that the sewage may not come into contact with the urethane ring 20.

Here, when the silicon or urethane foam 55 is press-fitted into the inlet 51, the double wall tubes 1 and 2 are discharged into the double wall tubes 1 and 2 at positions where the double wall tubes 1 and 2 abut each other, and thus the silicone or urethane foams 55 ) Before placing the airbag 50 inside the connecting portion of the double wall pipe (1) (2) and fill the air bag 50 to prevent leakage through the gap of the double wall pipe (1) (2). do.

According to the present invention configured as described above, the double wall pipe (1) (2) is inserted into the inner side of the connecting pipe (10) so that the ends of the double wall pipe (1) (2) abut each other at the inner center of the support pipe (11), The urethane ring 20 is fitted to the outside of the double wall tube 1 and 2 so that the urethane ring 20 can be fitted on the inclined surface 13 of the flange tube 12.

Here, the urethane ring 20 is used to remove the fusion protrusion after fusion of the tip by cutting a continuous length to a certain length form.

After the urethane ring 20 is inserted in this way, the U-shaped compression ring 30 is inserted into the inlet side of the flange tube 12 so that the compression ring 30 sandwiched between the flange tube 12 and the double wall tube 1 is a urethane ring. In close contact with the 20, several bolt fitting portions 31 are formed on the outside of the compression ring 30, so that the bolts 40 are fitted, and the bolts are fitted to the bolt fitting portions 31 of the compression ring 30. 40 is the head portion is formed only in one direction so as to span the engaging jaw 14 formed on the outside of the flange tube 12, the nut (40) is fitted to the bolt 40 to tighten the nut 41 As a result, the bolt 40 pulls the compression ring 30 so that the compression ring 30 compresses the urethane ring 20 so that the bolt 40 can be fitted into the inclined surface 13.

That is, the urethane ring 20 is pushed by the compression ring 30 after being fitted on the inclined surface 13 of the flange tube 12, and the urethane ring 20 is pressed and the flange tube 12 and the double wall tube 1 (2) is compressed so that no leakage occurs, and the protrusions 21 formed inside the urethane ring 20 are pressed to catch the leakage.

On the other hand, the compression ring 30 is good to use a one-piece made, but in the case of large diameter can be used for the compression ring piece (30a) made by dividing into several pieces, the size of the double wall pipe (1) is slightly different for each company In the case of blades, it is advantageous to workability to use a plurality of fragmented compression ring pieces (30a).

Such a double wall pipe (1) (2) connection method can be easily connected, the water tightness is ensured by the use of the urethane ring 20, in particular, even after long-term use does not lose the properties of the urethane, The same watertight function can be provided.

And the present invention fills the gap between the double wall pipe (1) and the connection pipe 10, the silicone or urethane foam (55) so that the sewage flowing through the double wall pipe (1) (2) is not in contact with the urethane ring (20). And double watertightness.

To this end, first, the inlet 51 for injecting the silicone or urethane foam 55 into the support tube 11 or the flange tube 12 and the internal air during the injection of the silicone or urethane foam 55 are easily injected. The outlet 52 is formed to be made so that the inlet 51 and the outlet 52 are spaced apart from each other to install a silicone or urethane foam 55 between the double wall pipe (1) (2) and the connection pipe (10) This can be faithfully filled, and when the silicone and urethane foam (55) is filled, the inlet 51 and outlet 52 is prevented with a screw cap or the like.

At this time, the air bag 50 is installed inside the double wall pipe (1) (2) of the present invention to inflate the silicon or urethane foam 55 with a slight pressure to inflate the air bag 50 before the double wall pipe (1) ( 2) prevents the silicone or urethane foam (55) from leaking into the inner side of the double wall tube (1) (2) by blocking the contact with each other, the injection hole 51 when the injection of the silicone or urethane foam (55) is finished And the airbag 50 is removed after blocking the outlet 52.

In the present invention, in connecting the double wall pipe, the double wall pipe is inserted into the inside of the pipe and the urethane ring to the outside of the urethane ring by pressing the compression ring to make watertight while the simple double wall pipe is made In this case, the workability in a narrow space is superior to the heat welding method in the buried work.

Claims (6)

Double wall pipes are inserted into the inner side of the connecting pipe in which the flange pipe is welded and fixed on both sides of the support pipe, and the flange pipe is formed to have an inclined surface inward, but the inclined surface has a larger diameter toward the inlet of the flange tube, and the flange A locking jaw is formed on the outer side of the tube, and the inclined surface of the flange tube is fitted with a wedge-shaped urethane ring that is in close contact with the outer side of the double wall tube, and the U-shaped compression ring is inserted at the inlet side of the flange tube, but the compression ring has several The bolt fitting part is formed at equal intervals, and the bolt fitted to the bolt fitting part of the compression ring is connected to the pipe connecting device for fastening the urethane ring by pressing the nut on the compression ring side while the head part is caught by the locking jaw of the flange tube. In the inlet for injecting silicone or urethane foam into the flange tube of the silicone or urethane foam It forms a discharge port to facilitate the injection by discharging the internal air during admission, but when injecting the silicone or urethane foam, the air bag is inflated to the area where the double wall pipe is in contact with each other to block the area where the double wall pipe is in contact with each other. The urethane ring is formed to have a straight shape and a cross section has a wedge shape, and then cuts a predetermined length to fuse the tip, and the circumference of the urethane ring is formed inside the urethane ring. Double wall pipe connecting device is characterized in that for forming a plurality of projections at intervals in the direction. delete delete delete The method of claim 1, wherein the compression ring has a U-shape in cross section and is fitted to the inside and the outside of the inlet of the flange tube, wherein the urging ring is in close contact with the inside of the flange wall. delete

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