KR20140070984A

KR20140070984A - Xl pipe connector with double sealing

Info

Publication number: KR20140070984A
Application number: KR1020120138756A
Authority: KR
Inventors: 배원일
Original assignee: 배원일
Priority date: 2012-12-03
Filing date: 2012-12-03
Publication date: 2014-06-11

Abstract

The present invention relates to an XL pipe connector with double sealing performance comprising: an elastic fixing ring (202) inserted into one side of a connector (200); a compression ring (204) for compressing the elastic fixing ring (202); an O-ring (206) which gets in contact with the compression ring (204) and comes into contact with the outer circumferential surface of an XL pipe (100) to thereby keep sealability; and a tightening cover (210) screw-coupled to one side of the connector (200) while compressing the O-ring (206), the compression ring (204) and the elastic fixing ring (202) at once, wherein a recess (H) is formed in the inner circumferential surface of the tightening cover (210) in the radial direction and a ring-shaped seal material (300) is inserted into the recess (H) to provide a double sealing so as to realize a mechanical seal form. The XL pipe connector according to the present invention makes the connector do common use and can solve water leak through the double sealing structure and construct cooling and heating pipes using the XL pipe which is low in dimensional stability.

Description

XL PIPE CONNECTOR WITH DOUBLE SEALING < RTI ID = 0.0 >

The present invention relates to an extruded XL pipe connector, and more particularly, to an improved extrusion pipe connector that enhances sealing property to prevent leakage.

Generally, a synthetic pipe is used as a pipe for cooling and heating including water.

Such synthetic resin pipes are mainly manufactured by extrusion type, and most of all, they should be excellent in water tightness and durability, and should be non-toxic.

A typical pipe is a PB (polybutylene) pipe.

The PB pipe is excellent in extrudability because of good resin flowability, and thus it is easy to manufacture a pipe for pipes having a uniform external dimension, which is a trend to replace conventional copper pipes.

That is, even when extruded, the resin flowability in the mold is good, and the dimensional stability is uniformly maintained without changing the outer diameter. In particular, there is little risk of leaking when the pipe is connected to a pipe (pipe end).

In this regard, SALOM TECH Co., Ltd. has released a number of sockets including PB pipes and is on the market.

However, the PB pipe has a disadvantage that the equipment cost is high because the raw material is expensive.

For this reason, relatively inexpensive XL pipes have recently been commercially launched.

XL-Pipes are Cross-Linking Polyethylene Pipes, which are inexpensive and extrudable synthetic resins, and are increasingly utilized because of their heat resistance, water tightness and durability.

However, since the flowability of the raw material resin is not good, the dimensional stability of the extruded pipe is deteriorated and the outer diameter of the extruded pipe is generated after passing the time of the initially extruded pipe, Even if the pipe is slightly twisted, there is a gap that causes a leakage phenomenon.

Therefore, it has a limitation that it can not be used for heating piping and the like.

This is caused by the fact that the socket contains an O-ring for sealing. For example, if the pipe and socket are made to fit 16.5 mm in diameter, mm, no matter how much the O-ring is held, there is no way to seal the O-ring when it slides or squeezes slightly against the socket.

In order to solve this problem, it is necessary to measure the outer diameter of each produced XL pipe and to make a dedicated socket for it, but it is practically impossible, so it is difficult to apply the XL pipe in the case of a pipe having a risk of leakage.

Particularly, the main reason for such a phenomenon is that the extrusion molding is performed by a striking method because the raw material for manufacturing EX pipe has a lower resin flowability than the PB resin. If this process is repeatedly performed, As the molding time becomes longer, the outer diameter dimension of the pipe is deformed.

In order to prevent this, Teflon is coated on the inner wall of the mold, but the coating is peeled off because it is not continued. Therefore, when sanding to polish it, the mold diameter increases and eventually the outer diameter of the pipe is deformed.

Therefore, in the extrusion molding itself, in the case of EXL pipe, there is a limit that can not find a clue to solve the leakage problem.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems in the prior art, and it is an object of the present invention to provide an extrusion molding method and an extrusion molding method, It is possible to seal the existing PB pipe socket by sealing, but it does not need to change the structure greatly. Therefore, there is no need to create a new connector, so it provides a double airtight XL pipe connector which can reduce the cost and prevent the leakage problem. It has its main purpose.

The present invention provides a connector 200, an elastic fixing ring 202 inserted into one side of the connector 200, a compression ring 204 for pressing the elastic fixing ring 202, An O-ring 206 which is in tight contact with the ring 204 and contacts the outer circumferential surface of the EX pipe 100 to keep the airtightness, the compression ring 204 including the O-ring 206, and the elastic fixing ring 202 And a tightening cover (210) screwed to one side of the connector (200), the connector comprising: Wherein a double seal is formed in the inner peripheral surface of the tightening cover 210 by recessing a groove H in the radial direction and inserting the ring shaped seal member 300 into the groove H to realize a mechanical seal shape. To provide an outlet pipe connection.

At this time, the ring-shaped seal material 300 is also characterized by being a water expansion index agent or a foamable urethane index agent.

According to the present invention, it is possible to jointly connect the joints and solve the water leakage problem through the double sealing structure, so that it is possible to construct the piping for cooling and heating even with the EX pipe which has poor dimensional stability.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exemplary view showing an assembled state of an XL pipe connection port according to the present invention. FIG.
2 is an exploded perspective view of the XL pipe connection according to the present invention.
3 is a sectional view of the assembly of the XL pipe connector according to the present invention.

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

Before describing the present invention, the following specific structural or functional descriptions are merely illustrative for the purpose of describing an embodiment according to the concept of the present invention, and embodiments according to the concept of the present invention may be embodied in various forms, And should not be construed as limited to the embodiments described herein.

In addition, since the embodiments according to the concept of the present invention can make various changes and have various forms, specific embodiments are illustrated in the drawings and described in detail herein. However, it should be understood that the embodiments according to the concept of the present invention are not intended to limit the present invention to specific modes of operation, but include all modifications, equivalents and alternatives falling within the spirit and scope of the present invention.

As shown in FIGS. 1 to 3, the double-air-tight XL pipe connection port according to the present invention is constructed so as to connect two XL pipes 100 to be connected, without any leakage, while maintaining excellent airtightness .

To this end, the XL pipe connector according to the present invention includes a connector 200 and a tightening cover 210.

In addition, although the illustrated example illustrates connecting two EX pipes 100 in a straight shape, the connector 200 for connection is not limited to a straight shape, but may have various shapes such as an elbow shape and a T shape And the present invention is applied to all of them, of course.

At this time, it is preferable that the connector 200 and the tightening cover 210 use a connector for connecting a conventional PB pipe without changing the structure.

Accordingly, since the connector 200 and the tightening cover 210 for use in the present invention are not separately manufactured, the cost reduction can be achieved.

2, an elastic retaining ring 202, a compression ring 204, and the like are inserted into one end of the connector 200, as shown in Fig. 2, for maintaining airtightness at the connection portion when connecting through the connector 200 for pipe piping. And the O-ring 206 are inserted in order, and then the tightening cover 210 is assembled. In this state, the pipe, that is, the open end of the EX pipe 100 is inserted into the connector 200, The plurality of retaining pieces R formed in the radial direction of the elastic retaining ring 202 are fully engaged with the outer circumferential surface of the EX pipe 100 and are fully engaged with the compression ring 204, The O-ring 206 is brought into tight contact with the outer circumferential surface of the X-ray pipe 100 by the pressing force.

This assembling example is easy to understand, and assembly in the field is carried out in the reverse order of tightening cover 210, O-ring 206, compression ring 204 and elastic fixing ring 202 in the open end of EX pipe 100 The open end of the EX pipe 100 is inserted into one end of the connector 200 and then the tightening cover 210 is simply screwed down. This method is referred to as one-touch assembly.

As described above, the pipe connection can be easily made and the airtightness can be kept excellent by simply assembling and fastening it by a one-touch method. This is accompanied by a precondition that the outer diameter of the pipe is uniformly maintained.

However, in the case of the XL pipe 100, as described in detail with respect to a conventional problem, when the XL pipe 100 is slightly twisted or twisted when the pipe is connected, the O-ring 206 is slightly lifted, I can not help but cause trouble.

3 (a), when the fastening portion T of the connector 200 is inserted into the inner diameter side of the fastening cover 210 and the fastening portion T is inserted when the screw is assembled, A semicircular groove H is formed in the inner surface of the tightening cover 210 along the radial direction and the annular seal member 300 is inserted into the groove H so that the semi- The ring-shaped seal 300 is configured to have a double sealing structure with the outer circumferential surface of the EX pipe 100.

3 (b), as the engaging portion T enters the engaging portion insertion groove G, the inner diameter front end of the engaging cover 210 presses the original O-ring 206, Since the O-ring 206 is in intimate contact with the outer circumferential surface of the EX pipe 100, the primary sealing is performed, and the O ring 206 is deformed while being in contact with the outer circumferential surface of the EX pipe 100 into which the ring- At this time, since the outer diameter of the exhaust pipe 100 is completely surrounded and tightly sealed, secondary sealing is performed, thereby maximizing airtightness.

That is, since the double seal structure in which the original O-ring 206 and the ring-shaped seal 300 are successively sealed is provided, the area for maintaining the air-tightness is widened like a mechanical seal in fact, 100 can be sufficiently tightly sealed even if some of them are twisted or twisted.

At this time, if the ring-shaped seal member 300 is formed of a water expansion index agent, more excellent sealing property can be secured.

A water expansion index agent is a material that improves the sealing ability to block leakage while expanding rapidly when the water is encountered. It is good for blocking leakage of minute gaps.

In addition to the water expansion index agent, a foamable urethane index agent may be used. The foamable urethane index agent is a material which expands rapidly when the water is encountered, and the volume expands remarkably to perform the exponential function.

As described above, although the present invention may be very simple, it has not been disclosed until now, and it has excellent technical characteristics that have remained unresolved in the art and remained as a chronic problem despite numerous research efforts.

100: XLPE 200: Connector
202: elastic retaining ring 204: compression ring
206: O-ring 210: tightening cover
300: ring type seal material

Claims

A connector 200, an elastic retaining ring 202 inserted into one side of the connector 200, a compression ring 204 for compressing the elastic retaining ring 202, an extrusion ring 204 which is in close contact with the compression ring 204, An O-ring 206 which is in contact with an outer circumferential surface of the O-ring 206, a compression ring 204 including the O-ring 206, and an elastic fixing ring 202, (210);
Wherein a double seal is formed in the inner peripheral surface of the tightening cover 210 by recessing a groove H in the radial direction and inserting the ring shaped seal member 300 into the groove H to realize a mechanical seal shape. Extruded pipe connection with.

The method of claim 1,
Wherein the ring-like seal material (300) is a water expansion index agent or a foamable urethane index agent.