KR20150012345A - Pipe coupler having pipe protective cap - Google Patents

Abstract

The present invention relates to a pipe coupler having a pipe protection cap, and more particularly, to a pipe coupler for connecting a hollow pipe having a coating layer coated on its outer surface with watertight or hermetic, And a pipe protection cap which surrounds a tip end of the pipe to prevent the coating layer from being peeled off from the front surface of the pipe perpendicular to the flow direction of the fluid due to the pressure of the fluid, .
A pipe coupler having a pipe protection cap according to the present invention is a pipe coupler for connecting a hollow pipe coated with a coating layer on the outer side while watertight or hermetic and connecting the pipe coupler, A coupler main body in which the pipe is inserted forward and communicated with the pipe; Pipe fixing means provided in the hollow of the coupler main body and fixing the pipe inserted into the coupler main body; A packing member made of a material having elasticity and provided in the hollow of the coupler main body so as to seal the gap between the coupler main body and the pipe; Wherein the coupler body is provided with a through hole at the center thereof to allow fluid to pass therethrough, and a portion of the outer side of the pipe inserted into the coupler body, A pipe protection cap having a protruding locking protrusion; And further comprising:

Description

[0001] PIPE COUPLER HAVING PIPE PROTECTIVE CAP [0002]

The present invention relates to a pipe coupler having a pipe protection cap, and more particularly, to a pipe coupler for connecting a hollow pipe having a coating layer coated on its outer surface with watertight or hermetic, And a pipe protection cap which surrounds a tip end of the pipe to prevent the coating layer from being peeled off from the front surface of the pipe perpendicular to the flow direction of the fluid due to the pressure of the fluid, .

The piping operation is generally referred to as a work for forming a pipe by cutting and connecting a plurality of pipes in accordance with the installation environment to a predetermined length. In the piping operation described above, the length of the pipe and the necessity of changing the position of the pipe A piping coupler is used.

Conventionally used piping couplers are provided with a plurality of connecting portions having the same inner diameter as a pipe to be connected and having an outer diameter larger than a pipe to be connected and formed with a helical groove so that a pipe can be inserted into the pipe in a threaded manner.

However, such a conventional conventional pipe coupler has a problem that workability is not easy since it is necessary to insert the pipe while rotating the pipe.

In order to solve the disadvantages of the conventional conventional piping coupler, a pipe connecting device having a packing member has been proposed in the registration utility model No. 0381922 (registered on Apr. 04, 2005).

FIG. 1 shows a conventional piping coupler disclosed in the above registered utility model No. 0381922. FIG.

Referring to FIG. 1, a pipe coupler according to the related art includes a hollow body 10 'having a plurality of open connection portions into which pipes to be connected are formed, A support ring 30 'which is inserted into the connection portion and is in close contact with the packing member 20' and has an inclined surface whose inner surface is downwardly downwardly formed, A fixture 40 'which is placed on an inclined surface of the ring 30' and is closely attached, the fixture 40 'having a plurality of fixtures for pressing and fixing the outer surface of the pipe inserted and connected to the inside of the connection, And a locking nut 50 'fastened to the end of the connection portion by a screw and tightly fixed to the fixture 40' are sequentially installed.

However, in the case of the pipe coupler according to the related art, the pipe is exposed directly to the fluid flowing in the pipe leading end portion of the pipe coupler. Therefore, in the case of the pipe coated with the coating layer on the outer surface, Thereby leading to corrosion of the tip of the pipe.

In the case of the piping coupler according to the related art, only the O-ring is shown as an example of the packing member 20 '. However, owing to the limitation of volume change due to elasticity, watertightness or hermeticity can not be maintained.

It is an object of the present invention to provide a piping coupler for connecting a hollow pipe having a coating layer on its outer surface with watertight or hermetic, And a pipe protection cap which surrounds a front end portion of the pipe inserted inside the pipe protection cap and is capable of preventing the coating layer from being peeled off from the entire front surface of the pipe perpendicular to the flow direction of the fluid due to the pressure of the fluid, And to provide a piping coupler provided therein.

It is a further object of the present invention to provide a sealing ring in which a wing portion of a sealing ring is widened in both widthwise directions by a pressure ring when a packing member comprising a combination of a sealing ring and a pressure ring having different grooves and projections is pressed, Or a pipe protection cap capable of ensuring reliable watertightness or airtightness of a gap.

In order to achieve the above object, the present invention provides a pipe coupler having a pipe protection cap, the pipe coupler having a coating layer coated on an outer surface thereof, A coupler body in which a hollow is formed and the pipe is inserted in front of the hollow and communicated with the pipe; Pipe fixing means provided in the hollow of the coupler main body and fixing the pipe inserted into the coupler main body; A packing member which is made of a material having elasticity and is provided in the hollow of the coupler main body and into which the pipe is inserted and seals a gap between the coupler main body and the pipe; Wherein the coupler body is provided with a through hole at the center thereof to allow fluid to pass therethrough, and a portion of the outer side of the pipe inserted into the coupler body, A pipe protection cap having a protruding locking protrusion; And further comprising:

According to another aspect of the present invention, there is provided a piping coupler having a pipe protection cap, wherein the pipe fixing means includes: a ring portion through which the pipe passes; And a tension washer having a plurality of radiating pieces arranged obliquely in such a manner that the inner diameter becomes smaller toward the rear in the annular part, wherein the packing member has a pressing groove formed along the circumferential direction on the laminated surface of the front surface or the rear surface And an annular sealing ring having a wing portion formed in the pressing groove and extending in the widthwise direction on both sides of the sealing ring, and a ring-shaped sealing ring having a shape larger than the pressing groove in a circumferential direction on a surface contacting the lamination surface of the sealing ring, And an annular pressing ring formed on the sealing ring and formed with a pressing protrusion, the pipe protecting cap, the tension washer, Wherein the packing member is fastened to the coupler body so as to be movable back and forth in a state of being sequentially stacked in the hollow of the coupler body and the wing portion of the sealing ring is widened in both widthwise directions and the gap between the coupler body and the pipe is sealed, A pressing means for pressing the sealing ring in a direction to press each other; A front cap formed on a front end of the coupler main body and having a pipe passage hole through which the pipe passes to prevent the pipe protection cap, the tension washer, and the packing member from being detached from the front of the coupler main body; Wherein the pressing means comprises a pressing spring which is disposed in the hollow of the coupler main body and elastically presses the pipe protecting cap forward, and the elastic force of the pressing spring and the fixing force of the radiating piece are used to press the pipe When the tension washer is moved forward, the packing member interposed between the tension washer and the front cap is pressed against each other.

According to another aspect of the present invention, there is provided a piping coupler including a pipe protection cap, wherein the pipe protection cap is formed by integrally forming the through hole, the side wall, and the engagement protrusion on the coupler body, do.

According to another aspect of the present invention, there is provided a piping coupler having a pipe protection cap, wherein the pipe fixing means includes: a ring portion through which the pipe passes; And a tension washer having a plurality of radiating pieces arranged obliquely in such a manner that the inner diameter becomes smaller toward the rear in the annular part, wherein the packing member has a pressing groove formed along the circumferential direction on the laminated surface of the front surface or the rear surface And an annular sealing ring having a wing portion formed in the pressing groove and extending in the widthwise direction on both sides of the sealing ring, and a ring-shaped sealing ring having a shape larger than the pressing groove in a circumferential direction on a surface contacting the lamination surface of the sealing ring, And an annular pressing ring which is formed on the sealing ring and is formed on the sealing ring, Becomes a pressing means for pressing in the direction of mutual compression of the pressure ring and the sealing ring to seal the gap between the coupler main body and the air pipe; Wherein the pressing means includes a pipe passing hole through which the pipe passes, and is screwed to a front end portion of the coupler main body so as to be advanced and retracted along the longitudinal direction of the coupler main body along the rotational direction, And a front cap for preventing the tension washer and the packing member from being released to the front of the coupler main body.

The piping coupler with the pipe protection cap according to the present invention is made of a material having elasticity so that watertightness or airtightness is maintained between the tip end of the pipe and the pipe protection cap, An annular tip packing ring fastened to the rear surface of the housing; And further comprising:

According to the above-described structure, the pipe protection cap having the pipe protection cap according to the present invention is constructed by the pipe protection cap covering the front end of the pipe, and by the pressure of the fluid continuously acting, There is an advantage that the coating layer can be prevented from peeling off from the front surface of the tip.

Further, in the piping coupler provided with the pipe protection cap according to the present invention, when the packing member is compressed, the wing portion of the sealing ring is configured to expand in both widthwise directions by the pressure ring to assure reliable watertightness or tightness of the joints or gaps of the pipe body There is an advantage to be able to do.

1 is an exploded perspective view of a piping coupler according to the prior art;
2 is an exploded perspective view of a piping coupler provided with a pipe protection cap according to an embodiment of the present invention.
3 is a cross-sectional view of a main portion of a packing member according to an embodiment of the present invention;
4 to 6 are cross-sectional views of the piping coupler provided with the pipe protection cap according to an embodiment of the present invention
7 is an exploded perspective view of a piping coupler provided with a pipe protection cap according to another embodiment of the present invention.
8 to 10 are cross-sectional views of a piping coupler provided with a pipe protection cap according to another embodiment of the present invention

Hereinafter, a piping coupler having a pipe protection cap according to the present invention will be described in detail with reference to the embodiments shown in the drawings.

FIG. 3 is a cross-sectional view of a main part of a packing member according to an embodiment of the present invention, and FIGS. 4 to 6 are cross- Sectional view of a piping coupler provided with a pipe protection cap according to an embodiment of the present invention.

2 to 6, a pipe coupler having a pipe protection cap according to an embodiment of the present invention includes a hollow pipe P coated with a coating layer P1 on its outer surface, The pipe protecting means 20, the packing member 30, the pipe protecting cap 40, the front end packing ring 50, the pressing means 60, (70).

The coupler body 10 has a hollow 11 formed along a longitudinal direction at a position for inserting a pipe P for connection and the pipe P is inserted in front of the hollow 11, (P).

A pipe protection cap 40, a tension washer 21 as a pipe fixing means 20 and a packing member 30 are sequentially stacked on the hollow 11 of the coupler body 10 according to an embodiment of the present invention. And the front cap 70 is fastened to the front end portion of the coupler body 10. [

Meanwhile, in the coupler body 10 according to the embodiment of the present invention, the pipe P is inserted into and connected to the hollow 11 from one side, but hollows are formed on both sides to insert the pipe. And may be formed in various shapes such as a T shape, a cross shape, and the like.

The pipe fixing means 20 is configured to fix the pipe P inserted into the coupler main body 10 and comprises a tension washer 21 in an embodiment of the present invention.

The tension washer 21 is coupled to the hollow of the coupler body 10 so as to be movable back and forth so that the pipe P can be inserted in one direction but prevented from departing in the other direction. And a plurality of radiating pieces 212 which are arranged obliquely in such a manner that the inner diameter decreases toward the rear of the annular portion 211. [

That is, due to the configuration of the plurality of radiating pieces 212 arranged obliquely to the rear of the tension washer 21, the insertion of the pipe P into the tension washer 21 is difficult to remove, Can be fastened and fixed to the coupler body 10 by one-touch operation.

It is preferable that a washer 22 is provided between the tension washer 21 and the packing member 30.

The packing member 30 is connected to the hollow 11 of the coupler body 10 so as to be movable forward and backward so as to penetrate the pipe P. The packing member 30 is made of a material having elasticity such as rubber, And a seal ring 31 and a pressurizing ring 32 in an embodiment of the present invention in which the gap between the pipes P is sealed.

The sealing ring 31 is formed in an annular shape and has a pressing groove 311 formed along the circumferential direction on the lamination surface of the front surface or the rear surface and formed with wings 312 ).

The pressing ring 32 is formed in an annular shape corresponding to the sealing ring 31 and has a shape larger than the pressing groove 311 along the circumferential direction on the surface contacting the lamination surface of the sealing ring 31, A pressing protrusion 321 to be inserted into the pressing groove 311 is formed and laminated on the sealing ring 31.

In the embodiment of the present invention, as shown in Fig. 3, the sealing ring 31 is composed of two, and the pressure ring 32 is composed of one, (Not shown).

Particularly, in an embodiment of the present invention, the pressing protrusion 321 is larger than the pressing groove 311, and when the sealing ring 31 and the pressing ring 32 are pressed against each other by an external force, (312) spread in both widthwise directions.

The wing portion 312 of the sealing ring 31 is configured to extend in both widthwise directions so that the gap between the coupler body 10 and the pipe P can be more reliably sealed.

The pipe protection cap 40 protects the tip of the pipe P from the pressure of the fluid. The pipe protection cap 40 is coupled to the hollow 11 of the coupler body 10 so as to be movable back and forth, A cylindrical hole 42 is formed in the center of the cylindrical wall 42 so as to cover a part of the outer surface of the pipe P inserted into the coupler body 10, The jaw 43 is formed.

That is, when a hollow pipe P having a coating layer P1 coated on its outer surface is inserted into the coupler body 10, the pipe protection cap 40 (see FIG. 1) fastened to the hollow 11 of the coupler body 10, Is configured to surround the distal end of the pipe P so that the coating layer P1 can be prevented from being peeled from the entire front surface of the pipe P perpendicular to the flow direction of the fluid by the pressure of the fluid continuously acting .

The front end packing ring 50 is formed in an annular shape and is made of a material having elasticity and is fastened to the rear surface of the locking protrusion 43 inside the side wall 42 of the pipe protection cap 40.

The watertightness or hermeticity is maintained between the tip end of the pipe P and the pipe protection cap 40 due to the configuration of the front end packing ring 50 so that the coating layer P1 is more reliably held on the front end of the pipe P. [ It is possible to prevent peeling.

The pressing means 60 presses the pressing ring 32 and the sealing ring 31 in a direction to press them against each other. In the embodiment of the present invention, in the hollow of the coupler body 10, (40), the tension washer (1), and the packing member (30) are sequentially stacked in the hollow (11) of the coupler body (10) And a biasing spring 61 for biasing the biasing spring.

That is, when the tension washer 21 is moved forward together with the pipe P by the elastic force of the pressing spring 61 and the fixing force of the radiating piece 212, the tension washer 21 and the front cap The packing member 30 interposed between the coupler body 10 and the pipe P is compressed and the wing portion 312 of the sealing ring 31 spreads in both widthwise directions, The gap is surely sealed.

The front cap 70 has a pipe passing hole 71 through which the pipe P passes and is fastened to the front end of the coupler body 10.

It is possible to prevent the pipe protection cap 40, the tension washer 21 and the packing member 30 from being released to the front of the coupler body 10 due to the configuration of the front cap 70 .

4 to 6, a piping coupler with a pipe protection cap according to an embodiment of the present invention will be described.

4 shows an initial state before the pipe P is inserted into the coupler body 10, and FIG. 5 shows a state in which the pipe P is inserted into the coupler body 10 in the initial state of FIG. 6 shows a state in which the pipe P is inserted into the coupling washer 10 by the insertion of the pipe P into the tension washer 21. [ A state in which the tension washer 21 is moved forward by the elastic force of the pressure spring 61 and is integrally formed with the pipe P and the packing member 30 is compressed is shown have.

Hereinafter, a piping coupler having a pipe protection cap according to an embodiment of the present invention will be described in detail. Hereinafter, a piping coupler having a pipe protection cap according to another embodiment of the present invention will be described in detail.

FIG. 7 is an exploded perspective view of a piping coupler provided with a pipe protection cap according to another embodiment of the present invention, and FIGS. 8 to 10 are sectional views of a piping coupler provided with a pipe protection cap according to another embodiment of the present invention, to be.

The piping coupler having the pipe protection cap according to another embodiment of the present invention may be configured such that the hollow pipe P coated with the coating layer P1 on its outer surface is watertight or hermetic, The pipe protecting means 20, the packing member 30, the pipe protecting cap 40, the front end packing ring 50, the pressing means 60, (70).

The coupler body 10, the pipe fixing means 20, the packing member 30, and the front end packing ring 50 are the same as those of the embodiment of the present invention and will not be described in detail below.

The pipe protection cap 40 protects the tip end of the pipe P from the pressure of the fluid as in the embodiment of the present invention. The through hole 41 is formed at the center of the pipe protection cap 40 to allow the fluid to pass therethrough, A cylindrical sidewall 42 and a catching protrusion 43 protruding inward from the sidewall 42 are formed so that the front end portion of the pipe P inserted into the pipe 10 and a part of the outer side surface and a front surface of the pipe P are wrapped.

However, the pipe protection cap 40 according to an embodiment of the present invention is characterized in that the pipe protection cap 40 is coupled to the hollow 11 of the coupler body 10 so as to be movable back and forth. In contrast, in another embodiment of the present invention The pipe protection cap 40 of the first embodiment has a structure in which the hollow 11 of the coupler body 10 is stepped so that the through hole 41 and the side wall 42 and the engagement step 43 are integrally formed with the coupler body 10. [ As shown in Fig.

The pressing means 60 is formed in the pressing ring 32 so that the wing portion 312 of the sealing ring 31 spreads in both widthwise directions and seals a gap between the coupler body 10 and the pipe P. [ And the sealing ring 31 are pressed against each other in a direction in which the sealing ring 31 and the sealing ring 31 are pressed against each other. In one embodiment of the present invention, the pressing means 60 has a pipe passing hole 71 through which the pipe P passes, And a screw 12 is coupled to the front end of the coupler body 10 to be advanced or retracted along the longitudinal direction of the coupler body 10 along the rotation direction to press the packing member 30, And a front cap 70 for preventing the packing member 30 from being released to the front of the coupler main body 10. [

That is, in an embodiment of the present invention, a pressing member 60 for pressing the packing member 30 and a pressing member 60 for preventing the structure fastened to the hollow 11 of the coupler body 10 from being released to the outside The present invention is characterized in that the pressing means 60 and the front cap 70 are integrally formed in the other embodiment of the present invention.

Hereinafter, the piping coupler with the pipe protection cap according to another embodiment of the present invention will be described with reference to FIGS. 8 to 10. FIG.

8 shows an initial state before the pipe P is inserted into the coupler body 10, and FIG. 9 shows an initial state in which the pipe P is inserted into the coupler body 10 in the initial state of FIG. 10 shows a state where the pipe P is inserted into the coupler main body 10 and the front cap 70 is inserted into the tension washer 21. In the state where the pipe P is slipped and inserted into the tension washer 21, So that the packing member 30 is compressed.

The pipe coupler having the pipe protection cap described above and described in the drawings is only one embodiment for carrying out the present invention and should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is defined only by the matters set forth in the following claims, and the embodiments improved and changed without departing from the gist of the present invention are obvious to those having ordinary skill in the art to which the present invention belongs It will be understood that the invention is not limited thereto.

P pipe
10 Coupler Body
11 hollow
20 Pipe fastening means
21 Tension Washer
211 Loop
212 radiation piece
30 packing member
31 Sealing ring
311 Pressurized Groove
312 wing portion
32 Pressurizing ring
321 pressing projection
40 Pipe protection cap
41 opening
42 side wall
43 jaws
50 tip packing ring
60 pressing means
61 pressure spring
70 front cap
71 Pipe through ball

Claims (5)

A piping coupler for connecting a hollow pipe coated with a coating layer on an outer side surface thereof in a watertight or hermetic manner,
A coupler main body having a hollow formed along a longitudinal direction thereof, the pipe inserted into a front of the hollow and communicating with the pipe; Pipe fixing means provided in the hollow of the coupler main body and fixing the pipe inserted into the coupler main body; A packing member made of a material having elasticity and provided in the hollow of the coupler main body so as to seal the gap between the coupler main body and the pipe; Including,
A cylindrical hole formed in the center of the coupler body to allow fluid to pass therethrough, a cylindrical hole formed in the center of the coupler body, A jawed pipe protection cap; Wherein the piping cap further comprises a pipe cap. The method according to claim 1,
The pipe fixing means includes a ring portion through which the pipe passes, and a plurality of pipes arranged in an inclined manner so as to have an inner diameter smaller toward the rear than the ring portion to prevent the pipe from being released in the other direction, And a tension washer having < RTI ID = 0.0 >
Wherein the packing member comprises an annular sealing ring formed by laminating a pressing groove along a circumferential direction on a lamination surface on a front surface or a rear surface and having a wing extending in both widthwise directions in the pressing groove, And an annular pressing ring having a shape larger than the pressing groove along the circumferential direction on the contact surface and formed with a pressing protrusion inserted into the pressing groove and stacked on the sealing ring,
Wherein the pipe protection cap, the tension washer, and the packing member are coupled to each other so as to be movable back and forth in a state of being sequentially stacked in the hollow of the coupler body,
A pressing means for pressing the sealing ring in such a direction as to press the pressing ring and the sealing ring so as to seal the gap between the coupler main body and the pipe, A front cap formed on a front end of the coupler main body and having a pipe passage hole through which the pipe passes to prevent the pipe protection cap, the tension washer, and the packing member from being detached from the front of the coupler main body; Further included,
Wherein the pressing means includes a pressing spring which is disposed in the hollow of the coupler main body and elastically presses the pipe protecting cap forward,
And the packing member interposed between the tension washer and the front cap is pressed against each other when the tension washer is moved forward by the elastic force of the pressure spring and the fixing force of the radiating member. A piping coupler with a cap. The method according to claim 1,
Wherein the pipe protection cap is formed by stepping the hollow of the coupler body so that the through hole, the side wall, and the engagement protrusion are integrally formed with the coupler main body. The method of claim 3,
The pipe fixing means includes a ring portion through which the pipe passes, and a plurality of pipes arranged in an inclined manner so as to have an inner diameter smaller toward the rear than the ring portion to prevent the pipe from being released in the other direction, And a tension washer having < RTI ID = 0.0 >
Wherein the packing member includes an annular sealing ring formed by laminating a pressing groove along a circumferential direction on a lamination surface on a front surface or a rear surface and having a wing extending in both widthwise directions in the pressing groove, And an annular pressing ring having a shape larger than the pressing groove along the circumferential direction on the contact surface and formed with a pressing protrusion inserted into the pressing groove and stacked on the sealing ring,
A pressing means for pressing the sealing ring in such a direction as to press the pressing ring and the sealing ring to seal the gap between the coupler main body and the pipe, the wing portion of the sealing ring being opened in both widthwise directions; Further included,
Wherein the pressing means includes a pipe passing hole through which the pipe passes, and is screwed to the front end of the coupler body to be advanced and retreated along the longitudinal direction of the coupler body along the rotational direction, And a front cap for preventing a tension washer and the packing member from being released to the front of the coupler main body. 5. The method according to any one of claims 1 to 4,
An annular tip packing ring which is made of a material having elasticity so that watertightness or airtightness is maintained between the tip end of the pipe and the pipe protection cap and is fastened to the rear surface of the stopping jaw within the side wall of the pipe protection cap; Wherein the piping cap further comprises a pipe cap.

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