KR20020016340A - coupling for pipe joint - Google Patents

Abstract

PURPOSE: A pipe coupling is provided to easily joint components used for the piping work without performing a preliminary work with respect to an end of the pipe which is required to connect the components to one end of the pipe. CONSTITUTION: A coupling(30) is provided to connect the first pipe(10) with the second pipe(20). The coupling(30) has a cylindrical hollow shape and is formed with the first insertion part(40a), into which the first pipe(10) is inserted, and the second insertion part(40b), into which the second pipe(20) is inserted. The first insertion hole(41a) having a diameter larger than an outer diameter of the first pipe(10) is formed in the first insertion part(40a). The first resin groove(42a) is formed in the first insertion hole(41a) for receiving adhesive resin(50). The second insertion hole(41b) having a diameter larger than an outer diameter of the second pipe(20) is formed in the second insertion part(40b). The second resin groove(42b) is formed in the second insertion hole(41b) for receiving adhesive resin(50).

Description

Coupling for pipe joint

The present invention relates to a pipe joint material, and more particularly, to a pipe joint coupling that can improve the coupling force and airtightness of a pipe by injecting a synthetic resin for pipe coupling into a pipe connecting member for connecting the pipe.

In recent years, as the industry develops, the use of piping, which is a vessel of a building, and the demand is increasing, and various pipe fittings are provided and used.

These piping accessories include elbows to divert pipes, tee to branch new pipes from existing pipes, and union joints to connect pipes and other pipes in a straight line, depending on the application. Etc., a method of connecting the piping accessories and pipes has also been developed and used in various ways.

Here, the method of connecting the pipe and the pipe accessories includes a screw joint, a welding joint, a flange joint, a grooved joint, and the like.

In the above-described method of connecting the pipe fittings, a pipe fitting is mounted by cutting or melting the end of the pipe to be connected.

That is, in the case of threaded joints, taper screws are cut at the end of the pipe to be connected and inserted into the female threaded parts provided in the pipe fittings to mount the pipe fittings. In the case of flanged joints, the flanges are welded to the end of the pipes to be connected. Join the flanges by fastening bolts and nuts to the coupling holes formed in the flanges to face the mating surfaces of the flanges provided in the pipe fittings.

Grooved joints are formed by processing grooves of a predetermined width on the circumferential surfaces of both ends of the pipes to be connected, inserting a high-quality ring for airtightness into the joints of the pipes, and inserting them into the grooves formed in each pipe. The upper and lower housings provided with the projections supporting the respective pipes are fastened with bolts and nuts to connect the respective pipes.

However, as described above, the connection method between the pipe and the pipe accessory according to the prior art requires a preliminary work for connecting the pipe parts, and when the space for installing the pipe is small because a work space for the preliminary work is required. It is very inconvenient to connect the piping accessories, and it is necessary to process the end of the pipe to connect the piping accessories, which makes the work process according to the pipe connection complicated, time-consuming, and difficult for the non-expert. This happens.

In addition, the pipe connection methods described above cause problems such as cross-sectional defects, local corrosion, durability reduction, etc. due to material loss and material change of the pipe material due to the pipe fitting is connected to the end of the pipe is raised or melted.

The present invention has been made to solve the above problems, a pipe joint coupling that can be connected to the pipe accessories more conveniently without the work preceding the pipe end to connect the pipe accessories to one end of the pipe. The purpose is to provide.

1 is a partial cross-sectional perspective view showing a pipe joint coupling according to the present invention.

FIG. 2 is a cross-sectional view taken along line BB ′ of FIG. 3.

Figure 3 is a perspective view showing the coupling of the coupling for pipe joints according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10: first piping 20: second piping

30: coupling 32: limiting protrusion

40a: first insertion part 40b: second insertion part

42a: first resin groove 42b: second resin groove

In order to achieve the above object, the present invention provides a coupling for a pipe fitting, in which a first pipe and a second pipe to be connected and each end of the first pipe and the second pipe are inserted into and coupled to each other. The coupling member may include a first insertion hole into which the first pipe is inserted at one side of the inner surface, and a second insertion hole into which the second pipe is inserted into the other side of the inner surface, and the first and second insertion holes inside the first and second insertion holes. The first and second resin grooves are provided to extend beyond the inner diameter of the second insertion hole, and the first and second resin grooves penetrate outside the coupling member from the inner surfaces of the first and second resin grooves, and have a predetermined adhesive force to the first and second resin grooves. It is characterized in that the first and second resin injection holes for injecting the joint resin is provided.

In addition, an inner surface of the first and second resin grooves is discharged so that air inside the first and second resin grooves is discharged when the joint resin is injected into the first and second resin grooves through the first and second resin holes. Preferably, the first and second air discharge holes penetrating to the outside of the coupling member is further provided.

In addition, between the first insertion hole and the second insertion hole of the coupling member protrudes a predetermined height than the inner diameter of the coupling member is characterized in that it is further provided a limiting projection for limiting the insertion of the first and second pipes. desirable.

In addition, the first and second insertion holes of the coupling member are expanded to a predetermined diameter than the inner diameter of the coupling member to provide first and second insertion grooves, and are inserted into the first and second insertion grooves, and the inner diameter is It is preferable that the " O " ring is further formed to be smaller than the inner diameter of the coupling member so as to form a predetermined pressure in the first and second pipes inserted into the first and second insertion portions.

In addition, the "O" ring is preferably characterized in that the rubber material having a predetermined elasticity.

Hereinafter, a coupling for a pipe joint according to the present invention will be described in detail with reference to the accompanying drawings.

In the description of the present invention, terms defined are defined in consideration of functions in the present invention, which may vary according to the intention or custom of a person skilled in the art and the definitions are based on the contents throughout this specification. Will have to be lowered.

1 is a partial cross-sectional perspective view showing a pipe joint coupling according to the present invention, Figure 2 is a cross-sectional view of the line B-B 'of Figure 3, Figure 3 is a coupling showing the coupling of the pipe joint coupling according to the present invention Perspective view.

As shown in Figures 1 to 3, the coupling for pipe joints according to the present invention is the first pipe 10, the second pipe 20 for connecting to the first pipe 10, and the first pipe Coupling 30 for connecting 10 and the second pipe 20 is provided.

Here, the coupling 30 is provided in a cylindrical shape with a hollow so that the first pipe 10 and the second pipe 20 can be inserted, the first insertion of the first pipe 10 is inserted into one side of the hollow. The part 40a and the second insertion part 40b into which the second pipe 20 is inserted are provided at the other side.

In addition, the first insertion part 40a is provided with a first insertion hole 41a having a predetermined diameter larger than the outer diameter of the first pipe 10 so that the first pipe 10 can be inserted smoothly. The first resin groove 42a having a predetermined width and depth to fill the predetermined circumferential direction of the insertion hole 41a with the adhesive resin 50 for fixing the first pipe 10 and the coupling 30. ) Is provided.

In addition, the coupling at the bottom of the first resin groove 42a to inject the first pipe 10 and the adhesive resin 50 for fixing the coupling 30 to the above-mentioned first resin groove 42a. The first resin injection hole 44a penetrated to the outer circumferential surface of 30 is provided, and the first resin groove when the adhesive resin 50 is injected into the first resin groove 42a through the first resin injection hole 44a. The first air discharge hole 46a through which the air filled in the 42a is discharged is provided through the outer peripheral surface of the coupling 30 from the bottom surface of the first resin groove 42a.

In addition, at both sides of the first resin groove 42a provided in the first insertion hole 41a, a rubber material "O" for maintaining airtightness when the first pipe 10 is inserted into the first insertion hole 41a. A first " O " ring insertion groove 47a into which the ring 48a is inserted is provided.

In addition, the second insertion part 40b is provided with a second insertion hole 41b having a predetermined diameter larger than the outer diameter of the second pipe 20 so that the second pipe 20 can be inserted smoothly. The second resin groove 42b having a predetermined width and depth to fill the predetermined circumferential direction of the insertion hole 41b with the adhesive resin 50 for fixing the second pipe 20 and the coupling 30. ) Is provided.

In addition, in order to inject the second pipe 20 and the adhesive resin 50 for fixing the coupling 30 to the second resin groove 42b described above, the coupling at the bottom of the second resin groove 42b ( The second resin injection hole 44b penetrated to the outer circumferential surface of 30 is provided, and the second resin groove when the adhesive resin 50 is injected into the second resin groove 42b through the second resin injection hole 44b. The second air discharge hole 46b through which the air filled in the 42b is discharged is provided through the outer peripheral surface of the coupling 30 from the bottom surface of the second resin groove 42b.

In addition, "O" of a rubber material for maintaining airtightness when the second pipe 20 is inserted into the second insertion hole 41b on both sides of the second resin groove 42b provided in the second insertion hole 41b. A second " O " ring insertion groove 47b into which the ring 48b is inserted is provided.

Then, the first pipe 10 or the second inserted into the first insertion hole 41a or the second insertion hole 41b between the first insertion hole 41a and the second insertion hole 41b. Limited projection 32 is provided to prevent the pipe 20 is inserted more than a set depth.

Here, the first insertion portion 40a and the second insertion portion 40b of the coupling 30 are types of the first and second pipes 10 and 20 inserted into the insertion portions 40a and 40b, respectively. Depending on the different shape, diameter can be applied to the combination of various pipes.

Accordingly, the operation of the coupling for pipe joints according to the present invention will be described in detail by way of examples.

First, the end portions of the first pipe 10 and the second pipe 20 to be connected are cut in the shape of a circle, and the first inserting portion 40a and the second inserting portion 40b of the coupling 30 are cut. ) Removes foreign matter present on the outer circumferential surface of each of the pipes 10 and 20 inserted into the pipe, and the first insertion hole 41a and the second insertion hole of the coupling 30 into which the pipes 10 and 20 are inserted. The foreign matter present in the hole 41b is removed.

Thereafter, the "O" rings 48a and 48b having a standard suitable for the first and second pipes 10 and 20 are inserted into the respective insertion grooves 47a and 47b provided in the first and second insertion holes 41a and 41b. And the first and second pipes 10 and 20 in the " O " rings 48a and 48b are caught by the limiting projection 32 provided between the first insertion hole 41a and the second insertion hole 41b. Insert it.

At this time, the first and second pipes 10 and 20 are inserted under predetermined pressure by the " O " rings 48a and 48b, and the " O " rings 48a and 48b are respectively inserted grooves 47a and 47b. Departure is prevented by

Thereafter, the adhesive resin 50 is injected into the first and second resin grooves 42a and 42b by applying a predetermined pressure through the first and second resin injection holes 44a and 44b provided on one surface of the coupling 30. ,

At this time, the air filled in the first and second resin grooves 42a and 42b is discharged to the first and second air discharge holes 46a and 46b provided at one side of the first and second resin injection holes 44a and 44b.

In addition, the adhesive resin 50 injected into the first and second resin injection holes 44a and 44b is completely filled in the first and second resin grooves 42a and 42b, and thus the first and second air discharge holes 46a and 46b. When it comes out to release the pressure applied to the adhesive resin 50 to stop the injection of the adhesive resin (50).

Thereafter, the first and second resin injection holes 44a and 44b formed on the outer surface of the coupling 30 and the first and second air discharge holes 46a and 46b are sealed with a tape and injected into the coupling 30. Curing the adhesive resin (50).

As such, the adhesive resin 50 which maintains the airtightness of the first and second pipes 10 and 20 and the coupling 30 inside the coupling 30 coupled to the first and second pipes 10 and 20. By injecting and curing to combine the first, second pipes (10, 20) and the coupling 30, no prior work for the coupling of the first, second pipes (10, 20) and the coupling ( 30) can be combined.

Although described in detail with respect to preferred embodiments of the present invention as described above, those of ordinary skill in the art, without departing from the spirit and scope of the invention as defined in the appended claims Various modifications may be made to the invention. Therefore, changes in the future embodiments of the present invention will not be able to escape the technology of the present invention.

As described above, the pipe joint coupling according to the present invention does not require a preliminary work for connecting the pipe and the pipe parts, the work process is simplified, the working time is shortened, work by non-professional, It is possible to solve the inconvenience when the space where the pipe is installed is small, and also to solve the problems such as the loss of the end of the pipe connected to the pipe fittings and the change of material due to material change, local corrosion, reduction of durability, etc. It works.

Claims (5)

In the first pipe, the second pipe to be connected, and the coupling member is inserted and coupled to each end of the first pipe and the second pipe, The coupling member may include a first insertion hole into which the first pipe is inserted at one side of the inner surface, and a second insertion hole into which the second pipe is inserted into the other side of the inner surface, and the first and second insertion holes inside the first and second insertion holes. The first and second resin grooves are provided to extend beyond the inner diameter of the second insertion hole. A coupling for pipe joints, characterized in that the first and second resin injection holes are provided to which the joint resin is injected. The method of claim 1, When the joint resin is injected into the first and second resin grooves through the first and second resin holes, the air inside the first and second resin grooves is discharged from the inner surface of the first and second resin grooves. Coupling for pipe joints, characterized in that the first and second air discharge hole further penetrates to the outside of the coupling member. The method of claim 1, Pipe joints, characterized in that provided between the first insertion hole and the second insertion hole of the coupling member protruding a predetermined height than the inner diameter of the coupling member to limit the insertion of the first and second pipes. Coupling. The method of claim 1, First and second insertion grooves are provided in the first and second insertion holes of the coupling member so as to extend a predetermined diameter than the inner diameter of the coupling member, and the first and second insertion grooves are inserted into the first and second insertion grooves, and the inner diameter is coupled to the coupling member. The coupling is formed smaller than the inner diameter of the coupling, characterized in that the "O" ring is further provided to form a predetermined pressure in the first and second pipes inserted into the first and second insertion portion. The method of claim 4, wherein The "O" ring is a coupling for pipe joints, characterized in that the rubber material having a predetermined elasticity.