WO2018151395A1

WO2018151395A1 - Pipe connection device having vibration-proof function

Info

Publication number: WO2018151395A1
Application number: PCT/KR2017/013273
Authority: WO
Inventors: 김용진
Original assignee: 김용진
Priority date: 2017-02-16
Filing date: 2017-11-21
Publication date: 2018-08-23

Abstract

The present invention relates to a pipe connection device having a vibration-proof function, the device comprising: a first connection member, which has a first inner diametral part, into which a first pipe is inserted, provided at one side thereof, has a second inner diametral part, into which a second pipe is inserted, provided at the other side thereof, has a first screw coupling part and a plurality of engaging protrusions along the outer periphery of the second inner diametral part, and having a third screw coupling part formed on the inner periphery of the second inner diametral part; a second connection member, which has, on the inner periphery thereof, a second screw coupling part screw-coupled to the first screw coupling part and a plurality of engaging grooves engaging with the engaging protrusions, so as to be coupled to the outer periphery of the second inner diametral part of the first connection member; and a fusible member placed between the second inner diametral part of the first connection member and the second pipe to be fused with the second pipe, and having a fourth screw coupling part, which is screw-coupled to the third screw coupling part, on the outer periphery thereof so as to be coupled to the second inner diametral part of the first connection member.

Description

Pipe connection device with seismic function

The present invention relates to a pipe connecting device having a seismic function for connecting pipes used for water and sewage pipes, rain pipes, electric wire storage pipes and gas pipes.

Generally, two or more pipes, that is, a socket type, a heat shrinkable type, and a fusion splicing device, are widely known for connecting a pipe.

However, socket type, heat shrinkable type, and fusion type pipe connecting device have many disadvantages in use, and the present applicant can improve the water tightness due to easy pipe connection work and fastening and connection state to improve these disadvantages. However, a low cost pipe connecting device has been developed, and this pipe connecting device is disclosed in Korean Patent Publication No. 0562782.

With reference to Figures 1 and 2 will be described briefly the 'pipe connecting device' disclosed in the above-mentioned prior document.

The pipe connecting device disclosed in the preceding document has a pair of

fixing members

30 and 40 fixed to each end of the corresponding pipe and coupled to any one of these fixing members and the other side corresponding thereto. It consists of a fastening member 50 for fastening the fixing member.

Of the fixing members, the first fixing member 40 has a protruding portion 42 formed at one end thereof, and the second fixing member 30 has a concave portion 33 formed at one end thereof. ) And the second fixing member 30 has a connection form in which the recess 33 is inserted into and close to the protrusion 42. In addition, the second fixing member 30 is formed with a first threaded portion 31 on the outer circumferential surface, and the fastening member 50 has a second threaded portion 51 formed on the inner circumferential surface, and these threaded portions 31 and 51 are formed. Through the coupling of the first fixing member 40 and the second fixing member 30 is made of a connection.

On the other hand, the O-ring member 60 is provided between the first fixing member 40 and the second fixing member 30 to perform a watertight or airtight action.

The pipe connecting device of FIGS. 1 and 2 having such a configuration is provided between the first fixing member 40 and the second fixing member 30 coupled to respective ends of the

corresponding pipes

10 and 20. After the O-ring member 60 is inserted, the first fixing member 40 and the second fixing member 50 are rotated by rotating the fastening member 50 fixed to the locking portion 41 of the first fixing member 40. The fixing member 30 may be coupled to each other. At this time, the first threaded portion 31 of the second fixing member 30 and the second threaded portion 51 of the fastening member 50 are engaged with each other to be fixed in a screwing manner.

Such a pipe connecting device is simpler than the conventional socket-type, heat-shrinkable and fusion-type connecting device, the work can be significantly reduced, the installation cost can be significantly reduced.

However, the pipe connecting device described above may loosen with a long time of use, and may leak through a minute gap of the loosened connection part. In particular, the pipe connection device described above provides a pipe connection structure by screwing, so that during long-term use, the connection device may be eroded or water may loosen slowly due to the water pressure acting on the connection part. As a result, there is a problem that a leak may occur in the pipe connection portion. Moreover, in recent years, due to the occurrence of frequent earthquakes, there is a demand for a pipe connecting device having seismic performance.

The present invention has been invented in order to solve the above problems, the pipes are firmly connected, the pipe connection having a seismic function that can prevent the leakage of the pipe reliably because the loosening of the connection site does not occur even after long-term use It is an object to provide a device.

In order to achieve the above object, the present invention has a first inner diameter portion that is inserted into the first pipe is fused or integrally formed with the first pipe, and the second inner diameter portion is inserted into the second pipe on the other side And a first screw fastening portion is formed on an outer circumference of the second inner diameter portion, and a plurality of engagement protrusions are disposed spaced apart from each other along the outer circumference of the second inner diameter portion on a distal side of the first screw fastening portion. A first connecting member having a third screw fastening portion formed on an inner circumference of an inner diameter portion thereof; A second screw fastening portion screwed to the first screw fastening portion of the first connection member on an inner circumference, and having a plurality of engagement grooves disposed spaced apart from each other along an inner circumference at the distal end of the second screw fastening portion, A second connection member coupled to the outer circumference of the second inner diameter portion of the first connection member by engaging the engagement protrusion with the engagement groove after the first screw coupling portion and the second screw coupling portion are coupled; And a fourth screw fastening part seated between the second inner diameter part of the first connecting member and the second pipe to be fused with the second pipe, and having a fourth screw fastening part screwed to the third screw fastening part on an outer circumference thereof. And a fusion member engaged with the second inner diameter of the connection member.

Preferably, an annular detachment preventing member is provided between an end portion of the second inner diameter portion of the first connecting member, an end flange of the second connecting member, and the second pipe, and the release preventing member is formed in the second pipe. A cylindrical portion that is in close contact with an outer circumference of the cylindrical portion and radially extends from an end portion of the cylindrical portion and is spaced apart from each other in a circumferential direction and is caught between an end portion of the second inner diameter portion of the first connecting member and an end flange of the second connecting member. It is characterized in that it comprises a plurality of extensions that are fixed.

Here, the separation preventing member is cut in the axial direction is characterized in that it is formed discontinuously along the circumferential direction.

Preferably, a sealing member including at least one of an o-ring and a square ring is installed between the second inner diameter of the first connecting member and the fusion member.

Here, the flange-like tightening ring for tightening the sealing member is provided between the separation preventing member and the sealing member.

Alternatively, the present invention includes a first inner diameter portion in which the first pipe is inserted and fused or integrally formed with the first pipe, and a second inner diameter portion in which the second pipe is inserted in the other side, 2, a first screw fastening portion is formed on an outer circumference of the inner diameter portion, and a plurality of engagement protrusions are spaced apart from each other along the outer circumference of the second inner diameter portion on a distal side of the first screw fastening portion, A first connecting member having a plurality of fusion ribs spaced apart from each other and extending in an axial direction along an inner circumference thereof; A second screw fastening portion screwed to the first screw fastening portion of the first connection member on an inner circumference, and having a plurality of engagement grooves disposed spaced apart from each other along an inner circumference at an end side of the second screw fastening portion, A second connection member coupled to the outer circumference of the second inner diameter portion of the first connection member by engaging the engagement protrusion with the engagement groove after the first screw coupling portion and the second screw coupling portion are coupled; And a fusion member seated between the second inner diameter portion of the first connection member and the second pipe to be fused with the second pipe.

According to the present invention, the engaging projection of the first connecting member and the engaging groove of the second connecting member are engaged with each other to prevent the loosening of the first connecting member and the second connecting member. Further, according to the present invention, it is possible to reliably prevent the second pipe from being separated from the first connecting member by the separation preventing means. Therefore, the pipe connection device having the seismic function according to the present invention can firmly connect the pipes, and the loosening of the connection site does not occur even after long-term use, so that the leak of the pipe can be reliably prevented.

1 is an exploded perspective view showing a pipe connecting device according to the prior art,

2 is a cross-sectional view of FIG.

3 is a perspective view showing a pipe connecting device having a seismic function according to the present invention,

Figure 4 is a side view showing a pipe connecting device having a seismic function according to the present invention,

Figure 5 is a side cross-sectional view showing a pipe connecting device having a seismic function according to the present invention,

6 is a perspective view showing a first connecting member of a pipe connecting device having a seismic function according to the present invention;

7 is a side cross-sectional view of FIG. 6, FIG.

8 is a perspective view showing a second connecting member of the pipe connecting device having the seismic function according to the present invention;

9 is a side cross-sectional view of FIG. 8;

10 is a perspective view showing a fusion member of the pipe connection device having a seismic function according to the present invention,

11 is a side cross-sectional view of FIG. 10;

12 is a perspective view showing a separation prevention member of the pipe connection device having a seismic function according to the present invention,

FIG. 13 is a rear view of FIG. 12;

14 is a perspective view showing a tightening ring of a pipe connection device having a seismic function according to the present invention,

Figure 15 is a side sectional view showing an alternative example of a pipe connection device having a seismic function according to the present invention.

3 to 5, a pipe connecting device having a seismic function according to the present invention includes a first pipe into which two

different pipes

10 and 20, that is, a first pipe 10 and a second pipe 20 are inserted. And a second connecting member 200 which prevents the pipe inserted into the connecting member 100 and the first connecting member 100 from being separated from the first connecting member 100.

5 to 7, the first connection member 100 is a tubular member and has a second inner diameter portion 120 having a larger inner diameter than the first inner diameter portion 110 and the first inner diameter portion 110. It is provided. The first pipe 10 is coupled to the first inner diameter portion 110, and the second pipe 20 is coupled to the second inner diameter portion 120.

The first inner diameter part 110 is provided on one side (lower in FIG. 5) of the first connecting member 100, and the first pipe 10 is inserted into the first inner diameter part 110 to be fused or the first inner diameter part. It may be integrally formed with the 110. In addition, the outer periphery of the first inner diameter portion 110 is provided with a protrusion 111 to enable the operator to easily grip the first connection member 100 or to engage the work tool.

The second inner diameter part 120 is provided on the other side (the upper part in FIG. 5) of the first connecting member 100, and the second pipe 20 is inserted into the second inner diameter part 120 and fused. Here, the

pipes

10 and 20 inserted into the first connection member 100 may be coupled to the first connection member 100 by heat fusion, for example, by high frequency heat fusion.

In addition, a first screw fastening portion 121 is formed on an outer circumference of the second inner diameter portion 120. The first screw fastening portion 121 is screwed with the second screw fastening portion 210 of the second connection member 200 which will be described later. Then, the distal side of the first screw fastening portion 121 of the second inner diameter portion 120 (lower end side of the first screw fastening portion 121 in FIG. 5) along each other along the outer periphery of the second inner diameter portion 120. A plurality of engaging protrusions 122 are provided spaced apart. The engagement protrusions 122 serve to prevent engagement of the first connection member 100 from the second connection member 200 by being engaged with the engagement groove 230 of the second connection member 200 which will be described later. do.

5, 8 and 9, the second connecting member 200 is a tubular member similar to the first connecting member 100, and corresponds to the outer circumference of the second inner diameter part 120 of the first connecting member 100. Has an inner diameter. Here, the second connection member 200 has a second screw fastening portion 210 on the inner circumference. The second screw fastening portion 210 of the second connecting member 200 is screwed with the first screw fastening portion 121 of the first connecting member 100, such that the first connecting member 100 and the second connecting member are fastened. 200 can be combined simply.

In addition, the second connection member 200 includes a protrusion 220 on the outer circumference thereof to allow the worker to easily grip the second connection member 200 or to engage the work tool. Therefore, the operator may simply screw the first connection member 100 and the second connection member 200 by using the protrusions 220 of the first connection member 100 and the second connection member 200. .

In addition, the second connecting members 200 are connected to each other along the inner circumference of the second connecting member 200 on the distal side of the second screw fastening portion 210 (the lower side of the second screw fastening portion 210 in FIG. 8). It has a plurality of engagement grooves 230 spaced apart. The engagement groove 230 is engaged with the engagement protrusion 122 of the first connection member 100 to prevent the fastening state of the screwed first connection member 100 and the second connection member 200 from being released. Do it.

Therefore, the first screw fastening in a state where the first pipe 10 and the second pipe 20 are inserted into the first inner diameter portion 110 and the second inner diameter portion 120 of the first connecting member 100, respectively. The first and second connecting

members

100 and 200 are coupled to each other by screwing the part 121 and the second screw fastening part 210 to each other, and in this state, the first screw fastening part 121 and the second screw fastening part 210 are coupled to each other. When the screw fastening portion 210 is rotated more strongly, the engagement protrusion 122 of the first connection member 100 is engaged with the engagement groove 230 of the second connection member 200. Accordingly, the first connecting member 100 and the second connecting member 200 may be formed by hydraulic pressure acting on the connecting portions of the

pipes

10 and 20, the first connecting member 100, and the second connecting member 200. The screw loosening phenomenon can be prevented from occurring, and water leakage at the pipe connecting portion can be prevented.

Preferably, the fusion member 300 may be seated on the second inner diameter portion 120 of the first connection member 100. 10 and 11, the fusion member 300 has an inner diameter corresponding to the outer diameter of the second pipe 20 and includes a flange 310 at the bottom thereof to limit the insertion depth of the second pipe 20. . That is, the fusion member 300 is seated between the second inner diameter portion 120 and the second pipe 20 of the first connection member 100.

After the fusion member 300 is inserted into the second inner diameter portion 120 of the first connecting member 100 and the second pipe 20 is inserted into the fusion member 300, the second inner diameter portion is inserted. When the 120, the fusion member 300, and the second pipe 20 are fused together, the fusion member 300 is fused to the second inner diameter portion 120 of the first connection member 100, and the second pipe 20 is fused. ) Is fused to the inner circumference of the fusion member 300, the second pipe 20 is coupled to the first connection member 100.

Here, the second inner diameter portion 120 of the first connecting member 100 is provided with a plurality of fusion ribs 123 extending in the axial direction and spaced apart from each other along the inner circumference. When the fusion ribs 123 are fused with the second inner diameter portion 120 of the first connection member 100 and the fusion member 300, the molten portion of the fusion member 300 is fused ribs 123. Entering the space therebetween serves to firmly couple the second inner diameter portion 120 and the fusion member 300.

Additionally, the end of the second inner diameter portion 120 of the first connecting member 100 (the upper end of the second inner diameter portion 120 in FIG. 5), the end flange 240 of the second connecting member 200, and An annular detachment preventing member 400 is installed between the second pipes 20. The detachment preventing member 400 serves to prevent the second pipe 20 coupled to the second inner diameter portion 120 of the first connecting member 100 from being separated from the first connecting member 100.

Specifically, referring to FIGS. 5, 12 and 13, the departure preventing member 400 is radially outer from the ends of the cylindrical portion 410 and the cylindrical portion 410 in close contact with the outer circumference of the second pipe 20. And a plurality of extension parts 420 disposed to be spaced apart from each other along the circumferential direction. The plurality of extension parts 420 are locked between the end portion of the second inner diameter portion 120 of the first connection member 100 and the end flange 240 of the second connection member 200. In addition, the extension portions 420 protrude radially outward from the outer circumference of the cylindrical portion 410, and have an overall L-shaped side cross section.

Here, the detachment preventing member 400 is a screw fastening operation of the first connecting member 100 and the second connecting member 200 in a state of being in close contact with the end of the first connecting member 100 and the second pipe 20. By the coupling between the first connecting member 100, the second connecting member 200 and the second pipe 20, and is fixed to the end flange 240 of the second connecting member 200.

Accordingly, the departure preventing member 400 may prevent the second pipe 20 from moving away from the second inner diameter portion 120 of the first connecting member 100. Furthermore, since the plurality of extension parts 420 are arranged to be spaced apart from each other along the circumferential direction, even if a pressure or an external force is applied from the inside of the second pipe 20 to the outside, the plurality of extension parts 420 may be disposed between the extension parts 420. Tension (tension) of the action can prevent the departure-avoidance member 400 is broken.

Preferably, the above-described separation preventing member 400 is cut in the axial direction is formed discontinuously along the circumferential direction. The discontinuity denoted by reference numeral C in FIG. 13 facilitates the separation preventing member 400 to be installed on the outer circumference of the second pipe 20, and serves to assist the tension of the aforementioned extension parts 420.

On the other hand, the sealing member 500 between the second inner diameter portion 120 of the first connecting member 100, precisely between the upper end of the fusion ribs 123 of the first connecting member 100 and the outer circumference of the fusion member 300. ) Can be installed. The sealing member 500 includes at least one of an o-ring and a square-ring. 5 shows an example in which the o-ring 510 and the square ring 520 are installed together as the sealing member 500. The o-ring 510 and the square ring 520 may be configured in pairs, and may be alternately disposed with each other.

In addition, a tightening ring 600 may be installed between the separation preventing member 400 and the sealing member 500 to tighten the sealing member 500 between the first connection member 100 and the fusion member 300. The tightening ring 600 of the annular insertion portion 610 and the annular insertion portion 610 that is fitted between the outer circumference of the fusion member 300 and the inner circumference of the second inner diameter portion 120 of the second connecting member 200. And a flange portion 620 extending radially outward from the end portion and in close contact with the extension portion 420 of the separation preventing member 400.

Accordingly, the first connection member 100 in a state where the tightening ring 600 is inserted between the separation preventing member 400, the fusion member 300, and the second inner diameter portion 120 of the first connection member 100. When the second connection member 200 is screwed together, the sealing member 500 may be firmly tightened between the first connection member 100 and the fusion member 300 by the tightening ring 600.

As described above, the pipe connecting device having the seismic function according to the present invention, the engaging projection 122 of the first connecting member 100 after the first connecting member 100 and the second connecting member 200 is screwed. ) And the engagement groove 230 of the second connection member 200 may be engaged with each other to prevent loosening of the first connection member 100 and the second connection member 200. Furthermore, the pipe connecting device having the seismic function according to the present invention is secured to the second connecting member 200 and the second connecting member 20 between the second pipe 20, the first connecting member 100 and the second connecting member 200. It is possible to reliably prevent the second pipe 20 from being separated from the first connecting member 100 by the separation preventing means 400. Therefore, the pipe connection device having the seismic function according to the present invention can firmly connect the pipes, and the loosening of the connection site does not occur even after long-term use, so that the leak of the pipe can be reliably prevented.

Alternatively, the pipe connection device having the seismic function according to the present invention comprises the above-described first connecting member 100, second connecting member 200 and fusion member 300, where fusion member 300 is included. ) May be coupled to the second inner diameter portion 120 of the first connection member 100 by screwing.

Specifically, referring to FIG. 15, in the pipe connecting apparatus having an alternative seismic function according to the present invention, the fusion member 300 seated on the second inner diameter portion 120 of the first connecting member 100 may be formed in the second inner diameter. It is configured to be screwed without being fused with the neck portion 120. To this end, the second inner diameter portion 120 of the first connection member 100 is provided with a third screw fastening portion 124 on the inner circumference of the bottom side on which the fusion member 300 is seated, and the fusion member 300 The fourth screw fastening part 320 is screwed to the third screw fastening part 124 on the bottom side circumference.

As a result, the second pipe 20 is fused to the inner circumference of the fusion member 300, and the fusion member 300 fused with the second pipe 20 is a screw fastening method to form the second connection of the first connection member 100. It may be coupled to the inner diameter portion 120.

Here, the third screw fastening portion 124 of the first connecting member 100 and the fourth screw fastening portion 320 of the fusion member 300 are formed of tapered screws cut obliquely along the pipe to form the first connecting member 100. ) And the sealing member 300 can be reliably maintained. Of course, the first screw fastening portion 121 of the first connecting member 100 and the second screw fastening portion 210 of the second connecting member 200 may also be formed by tapered screws.

Claims

A first inner diameter portion inserted into one side to be fused or fused or integrally formed with the first pipe, and a second inner diameter portion into which the second pipe is inserted into the other side, and provided on an outer circumference of the second inner diameter portion A first screw fastening portion is formed, and a plurality of engagement protrusions are disposed on the distal side of the first screw fastening portion and spaced apart from each other along the outer circumference of the second inner diameter portion, and a third screw fastening portion is formed on the inner circumference of the second inner diameter portion. A first connecting member formed;

A second screw fastening portion screwed to the first screw fastening portion of the first connection member on an inner circumference, and having a plurality of engagement grooves disposed spaced apart from each other along an inner circumference at the distal end of the second screw fastening portion, A second connection member coupled to the outer circumference of the second inner diameter portion of the first connection member by engaging the engagement protrusion with the engagement groove after the first screw coupling portion and the second screw coupling portion are coupled; And

The first connection is provided between the second inner diameter of the first connection member and the second pipe to be fused with the second pipe, and to have a fourth screw fastening portion screwed to the third screw fastening portion on an outer circumference thereof. And a fusion member engaged with the second inner diameter portion of the member.
The method of claim 1,

An annular detachment preventing member is provided between an end portion of the second inner diameter portion of the first connecting member, an end flange of the second connecting member, and the second pipe,

The release preventing member extends radially from an end portion of the cylindrical portion in close contact with the outer circumference of the second pipe and an end portion of the second inner diameter portion of the first connecting member and is spaced apart from each other in the circumferential direction. 2. A pipe connection device having a seismic function, comprising a plurality of extensions secured between the end flanges of the connection member.
The method of claim 2,

The separation preventing member is cut in the axial direction is a pipe connecting device having a seismic function characterized in that it is formed discontinuously along the circumferential direction.
The method of claim 2,

And a sealing member including at least one of an o-ring and a square-ring between the second inner diameter of the first connecting member and the fusion member.
The method of claim 4, wherein

And a flange-shaped tightening ring for tightening the sealing member is provided between the release preventing member and the sealing member.
A first inner diameter portion inserted into one side to be fused or fused or integrally formed with the first pipe, and a second inner diameter portion into which the second pipe is inserted into the other side, and provided on an outer circumference of the second inner diameter portion A first screw fastening portion is formed, and a plurality of engagement protrusions are disposed on the distal side of the first screw fastening portion and spaced apart from each other along the outer circumference of the second inner diameter portion, and spaced apart from each other along the inner circumference of the second inner diameter portion. A first connecting member having a plurality of fusion ribs extending in a direction;

A second screw fastening portion screwed to the first screw fastening portion of the first connection member on an inner circumference, and having a plurality of engagement grooves disposed spaced apart from each other along an inner circumference at the distal end of the second screw fastening portion, A second connection member coupled to the outer circumference of the second inner diameter portion of the first connection member by engaging the engagement protrusion with the engagement groove after the first screw coupling portion and the second screw coupling portion are coupled; And

And a fusion member seated between the second inner diameter portion of the first connecting member and the second pipe to be fused with the second pipe.