KR200360626Y1 - Plastic drainpipe and the manufacture device - Google Patents

Abstract

The present invention relates to a resin sewage pipe, and more particularly, a multilayer resin sewage pipe and a manufacturing apparatus for reinforcing the inner wall of the resin pipe and improving strength by inserting another resin pipe into the resin pipe to have a multilayer structure. It is about.

The connection of the multilayer resin sewage pipe of the present invention, the socket is inserted between the extension end of both side sewer pipe connected to extend and protrude both ends of the inner resin pipe inserted therein.

More specifically, the screw is screwed into the inner circumferential surface of the socket fitted around the extension end and the extension end, and inserted to share both ends of the connector coated with the outer circumferential surface inside the two sockets to be connected. Bonding is applied by bonding around the tube.

The other coupling structure using the socket is screwed to the inner peripheral surface of the socket that is fitted around the extension end and the extension end, and screwed together, to form an integrated connector at the end of one socket to be connected, adhesive to the connector Apply by inserting into the inner diameter of the socket on the opposite side to connect.

The apparatus for inserting the inner tube into the outer tube includes an outer tube fixing portion, a pressurizing portion for urging the inner tube rear end portion into the outer tube, and a heating device for applying heat to the inner diameter of the outer tube at the tip of the inner tube. It consists of.

The heating device includes a blower tube inserted into the inner tube so as to protrude forward from the front end of the inner tube, a heating wire installed at the tip of the blower tube, and a blower for supplying air to the rear end of the blower tube.

Description

Multi-layered resin sewage pipe and its manufacturing device {Plastic drainpipe and the manufacture device}

The present invention relates to a resin sewage pipe, and more particularly, a multilayer resin sewage pipe and a manufacturing apparatus for reinforcing the inner wall of the resin pipe and improving strength by inserting another resin pipe into the resin pipe to have a multilayer structure. It is about.

Sewage pipes buried underground are mainly concrete pipes, but they are susceptible to corrosion and pressure from the outside due to high humidity and poor underground environment. They are also expensive and difficult to transport and install due to heavy weight. There are disadvantages.

Therefore, these days, it is easy to install because it is strong in corrosion and light, and is using resin sewage pipe which is inexpensive. Of course, the water pipe can also be installed as a resin pipe.

Such resin sewage pipe is manufactured to form a pipe of large diameter by continuously winding the small pipe to be extruded in a spiral shape and is connected by winding a clip flange at the connection part at the time of installation or by fusion bonding the flange at the connection end and then bolting together. Doing.

The resin pipes installed in this way have the advantage of extending their service life due to corrosion resistance. However, they are vulnerable to abrasion resistance and cause damage to the inner wall of the resin pipes by sand or gravel that is washed away with sewage. If this occurs, there is a problem that a hole is generated, such as damage and leaks through the damaged portion.

In addition, the compressive strength, which is a weak point of the resin tube, has a disadvantage in that it is easily broken in a place where a lot of load is applied or where the elevation subsidence is severe.

The present invention is devised to solve the conventional problems as described above, and its purpose is to insert another resin tube into the resin tube to have a multi-layered structure to reinforce the inner wall of the resin tube and to improve the compressive strength at the same time. It is to extend the durability.

Another object of the present invention is to provide a multi-layer resin sewage pipe manufacturing apparatus to facilitate the production of the multi-layer sewage pipe.

1 is an exploded cross-sectional view showing the structure of a multilayer resin sewer pipe according to the present invention.

Figure 2 is a cross-sectional view showing the structure of the multilayer resin sewer pipe according to the present invention.

3 is a structural diagram of a multilayer resin sewage pipe manufacturing apparatus according to the present invention.

4 is an exploded cross-sectional view showing another connection structure of the multilayer resin sewer pipe of the present invention.

FIG. 5 is a cross-sectional view illustrating a connection state of the multilayer resin sewer pipe of FIG. 4. FIG.

6 is a cross-sectional view showing another connection structure of the present invention multilayer resin sewer pipe.

*** Explanation of symbols for the main parts of the drawing ***

10-Multi-layered resin sewer pipe 12,13-Internal and external pipes 14-Extensions

15,22-thread 20a, 20b-socket 24-connector

p1, p2-Packing 30a, 30b-Socket 31-Insertion

32-threaded part 34-integral connector 40-fixing part

41-Support frame 42-Support band 43-Pressing part

44-support 45-chuck 46-pressurized cylinder

47-Blower 48-Heater 49-Blower

s-the spacer

The present invention for achieving the above object is to have a multilayer structure by inserting another resin pipe inside the resin sewer pipe.

Both ends of the inner resin tube inserted therein are protruded and connected to the sockets at both end portions connected to each other.

The coupling structure using the socket is screwed to the inner circumferential surface of the socket fitted around the extension end portion and the extension end portion, and screwed to share both ends of the connector coated with an outer circumferential surface inside the two sockets to be connected. And bond to the bonding around the connector.

The other coupling structure using the socket is screwed to the inner peripheral surface of the socket that is fitted around the extension end and the extension end portion, and screwed to form an integrated connector at the end of one side socket to be connected, Apply adhesive to the inner diameter of the socket on the opposite side to connect it.

The apparatus for inserting the inner tube into the resin sewer pipe may include an outer tube fixing portion, a pressurizing portion for urging the inner tube rear end portion into the outer tube, and heat from the tip of the inner tube to the inner diameter of the outer tube. It consists of a heating device.

The heating apparatus includes a blower tube inserted into the inner tube so as to protrude forward from the front end of the inner tube, a heating wire installed at the tip of the blower tube, and a blower for supplying air to the rear end of the blower tube.

Hereinafter, with reference to the accompanying drawings an embodiment of the present invention will be described in detail.

1 is a separated cross-sectional view showing a structure of a multilayer resin sewer pipe according to the present invention, Figure 2 is a cross-sectional view showing a structure of a multilayer resin sewer pipe according to the present invention, Figure 3 is a structure of a multilayer resin sewage pipe manufacturing apparatus according to the present invention 4 is a separate cross-sectional view showing another connection structure of the multilayer resin sewer pipe of the present invention, Figure 5 is a combined cross-sectional view showing a state of the multilayer resin sewer pipe connection of FIG.

As shown in the drawings, the multilayer resin sewage pipe 10 is integrated with another inner tube 12 inserted into the outer tube 13.

The multilayer resin sewage pipe 10 is formed by forcibly inserting another resin pipe, that is, the inner pipe 12 into the inside of the outer pipe 13 while having a small elasticity by applying heat to the inside of the outer pipe 13. By cooling at room temperature of the outer tube 13, the outer tube 13 and the inner tube 12 are made by being integrated. In addition, the inner tube 12 is completed by heat fusion on both sides of the insertion can achieve a more complete integration.

In order to manufacture the multilayer resin sewer pipe 10, a separate device is required.

First, since the inner tube 12 must be pushed into the outer tube 13, a fixing part 40 for firmly fixing the outer tube 13 is required. The fixing part 40 is composed of a support frame 41 fixed to the lower portion and a support band 42 for winding and supporting the outer tube (13).

In addition, the pressurizing portion 43 for pushing the inner tube 12 into the outer tube 13 is required. The pressing portion 43 is composed of a support 44 for supporting the rear end of the inner tube 12 and a pressure cylinder 46 for pushing the support 44 in the engagement direction. In particular, the support 44 is provided with a chuck 45 for fixing the rear end of the inner tube (12). The chuck 45 is configured to bite and fix the inner tube 12 therein. This is because there is a risk of being crushed or broken when the resin tube with weak compressive strength is buried from the outside. In addition, the pressure cylinder 46 may be applied to a hydraulic cylinder using a hydraulic pressure, a device such as a screw shaft and a rack and pinion. And the support frame 41 of the pressing portion 43 and the fixing portion 40 will be stable to share one body.

In addition, a heating device is provided to apply heat to give flexibility and expandability to the outer tube 13 when the inner tube 12 is pushed into the outer tube 13. The heating device includes a blower pipe 47 inserted into the inner pipe 12 so as to protrude forward from the tip of the inner pipe 12, a heating wire 48 provided at the tip of the blower pipe 47, and The rear end of the blower pipe 47 is composed of a blower 49 for supplying air. At this time, the tip of the blower pipe 47 has a trumpet-shaped structure so that heated air is distributed and supplied to the inner circumferential surface of the outer pipe 13. And wire the electric wire through the blower pipe 47 to supply electricity to the heating wire (48). In addition, in order to prevent the blower pipe 47 from flowing in the inner pipe 12, a spacer s is provided between the blower pipe 47 and the inner pipe 12 to maintain a space therebetween.

By this device, the outer tube 13 is fixed to the fixing portion 40 by the support band 42 and the rear end of the inner tube 12 is fixed to the support chuck 45 of the pressing portion 43 and then the pressure cylinder. Operate (46) and push it toward the outer tube (13). At the same time, when the hot wire 48 at the tip of the blower pipe 47 is heated and the blower 49 is operated, the wind supplied through the blower pipe 47 is heated by the hot wire 48 to be supplied to the inner wall of the outer pipe 13. do. For this reason, the inner wall of the outer tube 13 receives heat and is flexible and has elasticity, thereby allowing the smooth insertion of the inner tube 12. When the heating apparatus is removed after the insertion of the inner tube 12 is completed, the outer tube 13 is cooled and restored to its original shape at room temperature, thereby being integrated with the inner tube 12.

Meanwhile, the sockets 20a and 20b are used for the connection between the multilayer resin sewer pipes 10, and both ends of the inner tube 12 are connected to the outer tube 13 to enable the sockets 20a and 20b to be coupled together. It is extended to protrude to both ends of the), and the socket (20a, 20b) is coupled to this extension (14). The combination of the sockets 20a and 20b and the extension part 14 may vary in structure depending on whether the inner tube 12 is made of PE or PVC.

In other words, when the inner tube 12 is made of PE, it is difficult to bond and bond the PVC-made sockets by screwing to bond the sockets between the sockets, and the inner tube 12 is made of PVC. In this case, it is possible to apply a method of directly bonding the two-sided resin sewage pipe 10 by using a single socket without screwing. Of course, the latter method can be used if bonding adhesion to the PE material is possible.

First, the inner tube is a connection structure in the case of the PE material.

After screwing around the extension part 14 of both ends of the inner pipe 12 of the multilayer resin sewer pipe 10 to form the thread parts 15 and 22, the sockets 20a and 20b are extended to the extension part 14. Fit to the outer circumferential surface, the socket (20a) (20b) is made of a PVC material. In addition, the sockets 20a and 20b form a protruding end 23 having the same inner diameter as the inner diameter of the inner tube 12 at the center of the inner diameter and corresponding to the circumference of the extension 14 around the protruding end 23. The threaded portion 22 was formed in the inner diameter by screwing so as to be connected to the threaded portion 15 around the extension portion 14 by screwing. At this time, the packing p1 for watertightness is interposed between the extension part 14 end and the protruding end 23 of the sockets 20a and 20b.

Sockets 20a and 20b are coupled to both ends of the multilayer resin sewer pipe 10 connected in such a structure, and one connector 24 is shared between the sockets 20a and 20b to be connected. It is connected by inserting, and when inserting by bonding the adhesive around the connecting tube 24 or the inner diameter of the socket (20a, 20b) by bonding. Therefore, after curing of the adhesive, the sockets 20a and 20b and the connection pipe 24 are tightly and firmly connected. At this time, a packing p2 for maintaining airtightness is also interposed between the protruding end 23 and the end of the connection pipe 24 inside the sockets 20a and 20b.

Figure 4 is a separate cross-sectional view showing another connection structure of the multi-ply resin sewer pipe of the present invention, showing the structure that can be combined without a separate connecting pipe 24 by configuring the structure of the socket in the male and female form.

The structure of the sockets 30a and 30b is divided into two types. Commonly, the inner circumferential surfaces of the sockets 30a and 30b fitted around the extension part 14 and the extension part 14 are commonly used. It has a threaded part (15, 32) by screwing. The opposite ends of the threaded portions 32 of the sockets 30a and 30b have different structures, and one socket 30b has an integrated connector 34, and the other socket 30a has the integrated connector 34. ) Has an insertion part 31 into which it is inserted. A protruding end 33 is formed on an inner circumferential surface of the socket 30a having the insertion part 31, and an extension part 14, a protruding end 33, and an end and a protruding end of the integrated connector tube 34 are assembled during assembly. The packings p1 and p2 for watertightness are interposed between the portions 33.

Therefore, when connecting the multi-layered resin sewer pipe (10) is screwed to correspond to the two sockets (30a, 30b) to each of the two extension portions 14 to be connected, and the one-piece connector (34) of one socket (30b) to the other socket ( It is connected to the insertion part 31 of 30a). At this time, by bonding an adhesive to the circumferential surface of the integrated connector tube 34 or the inner circumferential surface of the insertion portion 31 can be bonded and bonded to maintain a solid and water-tight connection.

On the other hand, when the inner tube 12 of the multilayer resin sewer pipe 10 is made of PVC, it is possible to apply the socket connection structure as shown in FIG.

6 is a cross-sectional coupling view showing a socket connection structure of the resin sewage pipe according to another embodiment of the present invention, as shown in FIG. 6, both ends of the inner tube 12 extend appropriate lengths to both sides of the outer tube. Let's do it. At this time, the machining operation such as threading is not performed on the extension portion 14 '. (Machining to increase the adhesion efficiency may be possible.)

The socket 50 forms a simple connector structure in which the extension portion 14 'is inserted into both sides, and has a protruding end 53 at the center of the inner circumferential surface thereof. This protruding end 53 preferably forms the same inner diameter as the inner diameter of the inner tube 12.

Bonding is applied by applying an adhesive to the inner peripheral surface of the two sides of the socket 50 or the outer peripheral surface of the extension portion 14 'of the inner tube 12, and then push the extension portion 14' into both sides of the socket 50 to bond. Combine.

That is, since both the inner tube 12 and the socket 50 are made of PVC, the connection work can be made quickly and simply by a simple bonding combination without any additional processing work.

On the other hand, a packing p3 for watertightness is interposed between ends of the extension portion 14 'of the multilayer resin sewer pipe 11 connected to both sides of the inner protruding end 53 of the socket.

The sewage pipe expressed in the detailed description of the present invention is not limited to the sewage pipe, but can be applied to all other pipes including the water pipe.

The present invention is to prevent the phenomenon that the resin tube is damaged by the impurities such as sand or stone flowing with the water by reinforcing the inner wall of the resin tube as another resin tube is inserted into the inside of the resin tube to form a multi-layer structure. And, at the same time there is an advantage that the compressive strength is improved as well as the durability of the multilayer resin sewer pipe is extended.

In addition, since a heating device using hot air is used to manufacture the resin sewage pipe having a multilayer structure, it is very easy to manufacture, such as quick and easy insertion of the inner tube. It has the advantage of achieving a tight coupling with the tube.

In addition, by extending both ends of the inner pipe of the multilayer resin sewer pipe to connect the socket to the extension portion and to connect with other multilayer resin sewer pipe, the connection work of the multilayer resin sewer pipe can also be quickly and easily as well as the high watertightness of the connection state There is an advantage to maintain.

Claims (9)

A multi-layered resin sewage pipe, characterized in that it is integrated by cooling shrinkage of the outer pipe after forcibly inserting another resin pipe into the inside while applying heat to the inside of the resin pipe to have a small stretch. The method of claim 1, Multi-layered resin sewer pipe, characterized in that the connection of the resin sewer pipe is made by coupling the socket to the extension portion protruding both ends of the inner tube inserted therein. According to claim 2, The socket is screwed to each other by threading the periphery of the extension portion and the inner peripheral surface of the socket, the socket is provided with a connecting pipe having an inner diameter of the two sockets connected to both ends of both sockets A multilayer resin sewer pipe, configured to connect with an adhesive while being inserted. The socket of claim 2, wherein the socket is screwed to an inner circumferential surface of the socket fitted around the extension part and the extension part, and forms an integrated connector at an end of one socket to be connected, Multi-layered resin sewer pipe, characterized in that the end portion is configured to insert the connector is inserted into the integral connector by applying an adhesive to the inner diameter of the socket on the opposite side. The multilayer resin sewage pipe according to claim 2, further comprising a socket having an inner diameter of the extension portion of the inner tube and inserting extensions of the resin sewage pipes to be connected to both sides of the inner tube to be bonded to each other. The multilayer resin sewage pipe according to any one of claims 3 to 5, wherein a protruding end having an inner diameter equal to that of the inner tube is formed at the inner diameter center of the socket. A fixing part for supporting an outer tube, A pressurizing portion for pressurizing an inner tube rear end into the outer tube; Multi-layer resin sewage pipe manufacturing apparatus comprising a heating device for applying heat to the inner diameter of the outer tube at the tip of the inner tube. The method of claim 7, wherein The heating apparatus includes a blower tube inserted into the inner tube so as to protrude forward from the front end of the inner tube; A heating wire installed at the tip of the blower tube; Multi-layered resin sewage pipe manufacturing apparatus characterized in that the blower pipe rear end portion is composed of a blower for supplying air. 9. The multilayer resin sewage pipe manufacturing apparatus according to claim 8, wherein spacers for maintaining a mutual gap between the blower pipe and the inner pipe are provided.