KR20180075841A - Connecting method of pipe for sprinkler using adapter unit - Google Patents

Abstract

The present invention relates to a method of connecting a sprinkler pipe by using an adapter unit in which only one bulging portion is provided inside the adapter unit when a sprinkler connection pipe is connected to a main pipe by using an adapter unit so that a process is minimized, grooves inserted therein with a plurality of rings are formed in the connection pipe to prevent leakage between the connection pipe and the adapter unit, or the bulging portion is provided so that the adapter unit is prevented from being pushed toward a corrugated pipe of the connection pipe, and thus a breakage due to an increased fatigue of the connection pipe is prevented. The present invention includes: a first step of processing an adapter having a bulging portion having the inside penetrated so that the sprinkler main pipe and the connection pipe are connected and formed inwardly concave along an inner periphery thereof so that a stepped portion and the bulging portion of the connection pipe protruded; a second step of inserting an processed adapter into one end of the connection pipe connected to the sprinkler; a third step of inserting a cylindrical rubber tube in the direction in which the adapter is inserted; a fourth step of allowing the bulging portion to outwardly protrude on an outer periphery of the connection pipe so that one side supports the stepped portion formed inside the adapter and the other side supports an end of the main pipe; a fifth step of allowing one end of the rubber tube to come into contact with the stepped portion formed inside the adapter at one side surface of the bulging portion; a sixth step of forming an outwardly protruding bulge portion to support the adapter in a bulge forming portion; and a seventh step of inserting the main pipe into the other end of the adapter.

Description

A connecting method of a pipe for a sprinkler using an adapter unit

The present invention relates to a method for connecting a sprinkler piping using an adapter unit, and more particularly, to a method for connecting a sprinkler pipe for a sprinkler and a main pipe by using an adapter unit, wherein only one bulging portion is formed inside the adapter unit, A groove may be formed in the connection pipe for inserting a plurality of rings or the like to prevent leakage which may occur between the connection pipe and the adapter unit or a bulging portion may be formed to prevent the adapter unit from being pushed to the bellows of the connection pipe by water pressure Thereby increasing the fatigue of the connection pipe and preventing the connection pipe from being damaged.

Sprinkler (SPRINKLER) is a device that disperses and distributes supplied water. It is installed in the indoor of the building and is used for spraying water in case of fire and suppressing the fire. It is also used for garden or garden. It is also used for watering purposes.

When installed for the purpose of fire suppression, the sprinkler is automatically sprayed with water due to the detection of the flame heat. It is common to divide the internal space of the building and install it on the ceiling at every fixed position.

Such a sprinkler is provided with a main pipe for supplying water to the inside of the ceiling, and a plurality of connecting pipes are installed in the main pipe, and a sprinkler is usually installed at the end of the connecting pipe. Such a sprinkler has to maintain a constant water pressure since the water must be sprayed with a certain radius, and the water pressure is maintained even in the water spray, so that a certain amount of water can be sprayed.

Conventionally, the main pipe and the connecting pipe are usually connected by welding since both pipes are made of a metal material. However, since a thin corrugated pipe is usually used for the connecting pipe, there is a problem that one side of the connecting pipe may be damaged due to sparks generated in the welding operation.

Due to such a problem, an adapter is installed at a portion where the main pipe and the connection pipe are connected. The adapter allows the corrugated pipe and the connecting pipe to be connected, and the packing is tightly sealed therebetween to prevent leakage. However, since the packing is usually made of a rubber material, there is a problem that leakage of the water can not be prevented only by the rubber packing being brought into contact with the piping side.

Accordingly, recently, a plurality of grooves are formed directly on the side of the connecting pipe, and the packing is compressed between the grooves and the adapter to prevent leakage. However, in this case, there has been a problem that a change occurs in the internal pressure of the connection pipe, resulting in a difference in flow rate and flow rate of the water flowing in the connection pipe. In addition, the connecting pipe is usually welded in the longitudinal direction, and there is a problem that the welded portion may be opened or broken at the time of forming the groove, thereby causing leakage.

In addition, when the adapter is made of CPVC (chlorinated PVC) rather than a metal material, the adapter is connected to the main pipe in a bonding mode. In this case, since the adapter can be pushed toward the connecting pipe toward the connecting pipe, A method of forming a part of the connection pipe so as to be supported on the connection pipe side is used, but in this process, there is a problem that the welded part of the connection pipe may be opened or broken, thereby causing leakage.

1. Korean Patent Registration No. 10-1346722 (December 24, 2013) 2. Korean Patent Publication No. 10-2016-0044766 (Apr. 26, 2016) 3. Korean Patent Laid-Open Publication No. 10-1997-0070683 (November 07, 1997)

Therefore, according to the present invention, the main pipe and the connection pipe can be firmly fastened using the adapter unit provided between the main pipe for the sprinkler and the connection pipe, and the deformation of the connection pipe can be minimized by forming only the minimum expansion part and the bulging part And it is an object of the present invention to provide a connection method of a sprinkler pipe using an adapter unit that can prevent breakage of a connection pipe even under constant water pressure after installation.

It is also possible to minimize the impact on the welded part of the connecting pipe by absorbing the impact between the connecting pipe and the adapter when the rubber tube is positioned between the adapter and the connecting pipe. When the bulging part is formed, And it is an object of the present invention to provide a connection method of a pipe for a sprinkler in which the rubber tube is pressurized and inflated so that the airtightness between the rubber tube and the adapter can be maintained so that there is no need to insert a separate ring or the like.

In order to achieve the above-mentioned object, the present invention provides a sprinkler comprising a main pipe and a connection pipe, wherein the main pipe is connected to the connection pipe, A first step of processing an adapter having a bulge portion and a bulge forming portion formed inwardly concave along an inner periphery so that a bulging portion of the connecting pipe can be protruded; a second step of inserting an adapter machined at one end of the connecting pipe connected to the sprinkler; , A third step of inserting a cylindrical rubber tube having a predetermined length in the direction in which the adapter is inserted, one end of the connecting pipe supporting a step formed inside the adapter, and the other end supporting the end of the main pipe A fourth step of outwardly protruding the tube portion so that the tube can be positioned between the connection tube and the adapter A fifth step of bringing one end of the rubber tube into close contact with a step formed on the inside of the adapter so that the outer circumferential edge of the lock rubber tube is connected to the inner circumference of the adapter so that the adapter is pressed by the corrugated tube portion of the connecting pipe A sixth step of forming a bulging portion protruding outward so as to be able to support the adapter in a bulge-formed portion formed inwardly concave along the inner periphery of the adapter, and a seventh step of inserting the main pipe at the other end of the adapter.

In order to achieve the above object, according to the present invention, there is provided a sprinkler according to the present invention, wherein the inside is penetrated so as to be fastened on a portion where a main pipe for a sprinkler is connected to a connection pipe, A step of machining an adapter having a bulge portion and a bulging portion formed inwardly concave along an inner periphery so that a bulging portion of the connecting pipe can be formed to protrude; a step of inserting a cylindrical rubber tube having a predetermined length into the processed adapter A third step of inserting an adapter having a cylindrical rubber tube fastened to one end of a connection pipe connected to the sprinkler, one end of the connection pipe supporting a step formed inside the adapter, and the other end supporting an end of the main pipe A fourth step of outwardly protruding the tube portion so that the rubber tube can be supported by the connecting tube and the adapter, A fifth step of bringing one end of the rubber tube into close contact with a step formed on the inside of the adapter so that the outer circumference of the rubber tube is connected to the inner circumference of the adapter so that the outer circumference of the rubber tube is connected to the corrugated pipe section of the connection pipe A sixth step of forming a bulging portion protruding outward so as to be able to support the adapter in the bulge forming portion formed inwardly concave along the inner periphery inside the adapter to prevent the adapter from being pushed, and a seventh step of inserting the main pipe at the other end of the adapter do.

In addition, the inside is penetrated so as to be fastened on a portion where the main pipe for a sprinkler is connected to the connection pipe. The inside of the through pipe is formed with a step portion formed to support one side of the expansion portion of the connection pipe, A second step of inserting a circular packing into the bulge forming portion inside the processed adapter, a second step of inserting a circular packing into the bulb forming portion inside the processed adapter, A third step of inserting an adapter having a circular seal fastened to one end thereof, one end of the connection pipe supporting a step formed inside the adapter, and the other end of the connection pipe supporting the extension of the main pipe, A fifth step of bringing a step formed in the inside of the adapter into close contact with the one side surface of the expanded portion of the tube, A sixth step of forming a bulging portion protruding outward so as to be able to support the adapter in the bulge forming portion formed inwardly concavely along the inner periphery inside the adapter so as to prevent the bulging portion of the connecting pipe from being pushed; And a seventh step of

The connection method of the sprinkler pipe using the adapter unit as described above can minimize the deformation of the connecting pipe and minimize the deformation of the connecting pipe because the main pipe and the connecting pipe can be connected by forming only the minimum expansion portion and the bulging portion Thereby preventing breakage of the connection piping and preventing the change of the hydraulic pressure and the flow rate in the connection piping.

It is also possible to minimize the impact on the welded part of the connecting pipe by absorbing the impact between the connecting pipe and the adapter when the rubber tube is positioned between the adapter and the connecting pipe. When the bulging part is formed, The rubber tube is pressurized and expanded to maintain the airtightness between the rubber tube and the adapter, so that it is not necessary to insert a separate ring or the like to maintain airtightness.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a use state diagram of a connection method of a sprinkler pipe using an adapter unit according to an embodiment of the present invention; FIG.
2 is a sectional view of the adapter unit of the present invention.
3 is a flow chart of a connection method of a pipe for a sprinkler using an adapter unit according to an embodiment of the present invention
4 is a flow chart of a connection method of a pipe for a sprinkler using an adapter unit according to an embodiment of the present invention
5 is a flowchart of a connection method of a pipe for a sprinkler using an adapter unit according to another embodiment of the present invention
6 is a flow chart of a method of connecting a pipe for a sprinkler using an adapter unit according to another embodiment of the present invention
7 is a flow chart of a connection method of a pipe for a sprinkler using an adapter unit according to another embodiment of the present invention
8 is a cross-sectional view illustrating a connection method of a pipe for a sprinkler using an adapter unit according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is to be understood that the same is by way of illustration and example only and is not to be taken by way of limitation, the scope of the present invention being limited only by the terms of the appended claims.

FIG. 2 is a cross-sectional view of an adapter unit according to an embodiment of the present invention, and FIG. 3 is a cross-sectional view illustrating an adapter unit according to an embodiment of the present invention. 4 is a process diagram of a connection method of a sprinkler pipe using an adapter unit according to an embodiment of the present invention, and Fig. 5 is a flow chart of a connection method of a sprinkler pipe using an adapter unit according to another embodiment FIG. 6 is a process diagram of a connection method of a sprinkler pipe using an adapter unit according to another embodiment of the present invention, and FIG. 7 is a flow chart of a connection method of a sprinkler pipe using an adapter unit according to another 8 is a flowchart illustrating a method of connecting a sprinkler pipe using an adapter unit according to an embodiment, Sectional view of a connection method of a pipe for a sprinkler using a unit.

A method of connecting a sprinkler pipe using an adapter unit according to an embodiment of the present invention is characterized in that the inside is penetrated so as to be fastened on a portion where a main sprinkler pipe and a connection pipe are connected, A first step of machining an adapter having a step portion formed to support one side and a bulge forming portion formed inwardly concave along an inner periphery so that a bulging portion of the connecting pipe can be formed to protrude; A third step of inserting a cylindrical rubber tube having a predetermined length in a direction in which the adapter is inserted, a step of supporting a step formed on the outer circumference of the connection pipe at one side thereof, A fourth step of protruding outwardly the expanded portion so that the end of the main pipe can be supported; A fifth step of causing one end of the rubber tube to be in close contact with a step formed on the inside of the adapter so that the outer circumference of the rubber tube is connected to the inner circumference of the adapter so as to be positioned between the pipe and the adapter, A sixth step of forming a bulging portion protruding outward so as to be able to support the adapter in the bulge forming portion formed inwardly concave along the inner periphery inwardly of the adapter to prevent the bulging portion of the connecting pipe 20 from being pushed by the bulging portion of the connecting pipe 20, And a seventh step of inserting the main pipe.

Hereinafter, each step of the method for connecting a sprinkler pipe using an adapter unit according to a preferred embodiment of the present invention will be described in detail with reference to FIGS. 1 to 4. FIG.

The adapter 10 for interconnecting the main pipe 30 and the connecting pipe 20 is formed by placing the main pipe 30 and the connecting pipe 20 between the main pipe 30 and the connecting pipe 20 in a first step S100. The main pipe 30 is installed in the ceiling of the building as a pipe for supplying water sprayed by the sprinkler 100. The main pipe 30 is mainly made of metal and connected to the connection pipe 20 by the adapter 10 do. A sprinkler 100 is operatively connected to the other end of the connection pipe 20 and the connection pipe 20 is mainly manufactured in the form of a metal corrugated pipe portion 23 in order to increase a flow rate of a certain portion. The adapter 10 according to the present invention has a main pipe 30 inserted at one end thereof and a penetrating pipe 20 inserted at the other end thereof. The inside of the adapter 10 is connected to a connection pipe 20 A step portion 12 is formed so as to support one side of the tube portion 21 to be projected on the outer periphery. The stepped portion 12 formed inside the adapter 10 supports one side of the expanded tube portion 21 to prevent the adapter 10 from being pushed back and is fixedly connected to the main tube 30. [ A bulge forming portion 11 formed inwardly concave along the inner periphery is formed inside the adapter 10 so that the bulging portion 22 of the connecting pipe 20 can be protruded. The bulge forming portion 11 formed along the inner periphery of the adapter 10 has an expanded bulging portion 22 seated upon forming the bulging portion 22 of the connecting pipe 20 to be described later, And the formation size of the bulging portion (22) is limited so that the deformation of the connecting pipe (20) is minimized so that the welded portion of the connecting pipe (20) is not damaged. The bulge forming portion 22 of the present invention simultaneously presses the cylindrical rubber tube 40 located between the connecting pipe 20 and the adapter 10 during the generation of the bulging portion 22 of the connecting pipe 20, Thereby providing a space portion between the rubber tube 40 and the adapter 10 so that the rubber tube 40 and the adapter 10 can be tightly fixed to maintain airtightness. The bulge forming portion 22 can be processed into two or more pieces in consideration of a place of installation or water pressure.

The second step S110 is to insert the adapter 10 processed at one end of the connection pipe 20 connected to the sprinkler 100. At the time of inserting, it is inserted sufficiently in the space for inserting the rubber tube 30 to be described later and in the direction of the corrugated tube 23 for forming the bulging portion 11. The inner diameter of the processed adapter 10 should be positioned between the adapter 10 and the connecting pipe 20 so that it is preferable to process the cylindrical rubber tube 50 considering the outer diameter of the cylindrical rubber tube 50.

The third step S120 is to insert the cylindrical rubber tube 40 in the same direction in which the adapter 10 is inserted into the connection pipe 20. At the time of insertion, it is inserted sufficiently in the direction of the corrugated tube 23 for forming a bulging portion 11 which will be described later. It is preferable that the rubber tube 40 according to the present invention has a sufficient length so that the end of the rubber tube 40 does not get caught in the bulge forming portion 11 even if the rubber tube 40 expands upon forming the bulging portion 22 Do. The rubber tube 40 serves to buffer the connection pipe 20 to the adapter 10 when the bulging portion 22 is formed and to prevent the welded portion of the connection pipe 20 from being damaged. The rubber tube 40 has an effect of maintaining airtightness to prevent leakage when the bulging portion 22 is formed, by being firmly fixed between the rubber tube 40 and the adapter 10. In particular, it is preferable that the rubber tube 50 of the present invention is used as a heat shrinkable rubber tube in which the diameter of the cylindrical shape is shrunk by applying heat at a predetermined temperature, which will be described later in more detail.

In a fourth step (130), the tube portion (21) is protruded outward from the outer peripheral side of the connecting pipe (20). In order to form the expansion portion 21 in the connection pipe 20, the connection pipe 20 (not shown in the following description) is connected to the expansion device to expand it. One side of the tube portion 21 formed by the expansion device supports the step portion 12 formed in the adapter 10 and the other side supports the end portion of the main tube 10. [ The tube portion 21 thus formed has an effect of preventing the adapter 10, the connecting pipe 20 and the main pipe 30 from being connected to each other, and preventing the adapter 10 from being pushed rearward.

In the fifth step 140, when the tube portion 21 is formed by the expanding device, the end of the rubber tube 40 inserted in the connection pipe 20 is tightly fixed to the tube portion 21, (10) is also moved in the direction of the expansion portion (21). At this time, the position is adjusted so that the step portion 12 formed in the adapter 10 is completely tightly fixed to the expanded portion 21. The rubber tube 40 is positioned between the connection pipe 20 and the adapter 10 so that the outer circumference of the rubber tube 40 is connected to the adapter 10, As shown in FIG. When one end of the rubber tube 40 inserted into the connection pipe 20 is tightly fixed to the expanded portion 21 and the rubber tube 40 is a heat shrinkable rubber tube, predetermined heat is applied to shrink the rubber tube 40, The rubber tube 40 and the adapter 10 are fixed by fixing the rubber tube 40 in close contact with the pipe 20 and then moving the adapter 10 in the direction of the expanding part 21 after the adhesive 10 is applied to the periphery of the rubber tube 40. This has the effect of keeping the airtightness between the adapter 10, the rubber tube 40 and the connecting pipe 20.

The sixth step 150 includes a step of forming a bulge forming portion (not shown) formed inwardly concave along the inner periphery inside the adapter 10 to prevent the adapter 10 from being pushed by the water pressure to the bulging portion 23 of the connecting pipe 20 11 to form a bulging portion 22 that protrudes outward so as to be able to support the adapter 10. At this time, the bulging portion 22 is formed by another type of expanding device (not shown). Since the bulging portion 22 according to the present invention is limited in the bulge forming portion 11 formed inwardly concave inwardly along the inner periphery in the inside of the adapter 10 so that the deformation of the connecting pipe 20 is minimized Since the rubber tube 40 is surrounded by the portion where the bulging portion 22 is formed, it is possible to alleviate the physical impact that may occur in the collision between the connection pipe 20 and the adapter 10 during the expansion, 20 can be prevented from cracking or the like at the welded portion. After the bulging portion 22 is formed, the outer peripheral edge of the rubber tube 40 is closely attached to the bulge forming portion 11 of the adapter 10 while the bulging portion 22 of the expansion rubber tube 40 is expanded at the same time, It is possible to maintain the airtightness for prevention. The bulging portion 22 prevents the adapter 10 from being pushed toward the corrugated tube portion 23 by the water pressure so that the adapter 10 together with the expanded portion 21 is completely fixed to the connection tube 20 It will also play a role.

In the seventh step, the main pipe 30 is inserted into the other end of the adapter 10. At this time, the adapter 10 and the main pipe 30 are bonded and bonded to each other. The connection method of the sprinkler pipe using the adapter 10 unit according to the present invention can form the minimum expansion portion 21 and the bulging portion 22 so that the main pipe 30 and the connection pipe 20 can be fastened The deformation of the connecting pipe 20 can be minimized and the deformation of the connecting pipe 20 can be minimized to prevent breakage of the connecting pipe 20 and prevent the change in the water pressure and the flow rate in the connecting pipe 20 And the rubber tube 40 is positioned between the adapter 10 and the connection pipe 20 to absorb the impact between the connection pipe 20 and the adapter 10 during the formation of the bulging portion to weld the connection pipe 20 And the bulging portion 22 formed in the connection pipe 20 pressurizes and expands the rubber tube 40 to prevent water leakage so that the airtightness between the rubber tube 40 and the adapter 10 is maintained So that it is not necessary to maintain airtightness by inserting a separate ring or the like That will.

4 and 5, a method of connecting a pipe for a sprinkler using an adapter 10 unit according to another embodiment of the present invention will be described. In the adapter 10 unit according to an embodiment of the present invention, Except for the same steps as the connection method of the sprinkler piping used, only the difference will be briefly explained. The first step of processing the adapter 10 among the connection methods of the sprinkler pipe using the adapter 10 unit according to the another embodiment of the present invention, the fourth step of forming the expansion part 21 in the connection spiral 20, A fifth step of bringing the one end of the rubber tube 40 into close contact with the expanded portion 21 of the step portion 12 of the tongue 10 in the sixth step and the sixth step of forming the bulging portion 22, The seventh step of inserting the main pipe 30 is the same.

 FIG. 5 is a flowchart showing a connection method of a sprinkler pipe using an adapter unit according to another embodiment of the present invention, and FIG. 6 is a flow chart of a connection method of a sprinkler pipe using an adapter unit according to another embodiment of the present invention to be.

According to the connecting method of the sprinkler pipe using the adapter unit according to another embodiment of the present invention, the second step S210 is to connect the adapter 10 processed in the first step S200 to the cylindrical rubber tube 40 are inserted first. When the cylindrical rubber tube 40 is not a heat-shrinkable rubber tube, the rubber tube 40 and the adapter 10 are inserted into the connection pipe 20 separately and then the rubber tube 40 ) Is inserted before it is easy to fasten. At this time, it is preferable that the rubber tube (40) and the adapter (10) are bonded and bonded before being inserted into the connection pipe (20).

In the third step S220, the adapter 10 having the cylindrical rubber tube 40 fastened to one end of the connection pipe 20 connected to the sprinkler 100 is inserted. At this time, it is preferable that the inserting portion is inserted sufficiently in the direction of the corrugated tube portion 23 to form the bulging portion 11 at the time of inserting.

Hereinafter, a connection method of a sprinkler pipe using the adapter 10 unit according to another embodiment of the present invention will be described with reference to FIGS. 4 and 5, but an adapter 10 unit according to an embodiment of the present invention Except for the same steps as the connection method of the sprinkler piping used, only the difference will be briefly explained. A first step of processing the adapter 10 among the connecting methods of the sprinkler pipe using the adapter 10 unit according to the other embodiment of the present invention, the fourth step of forming the pipe-connecting portion 21 in the connecting pipe 20, The sixth step of forming the bulging portion 22 and the seventh step of inserting the main pipe 30 at the other end of the adapter 10 are the same.

According to the connection method of the sprinkler pipe using the adapter unit according to the other embodiment of the present invention, the second step S310 is a step of connecting the bulge forming part 11 inside the processed adapter 10 A circular packing 50 is inserted. The present embodiment is different from the above embodiment in that a pipe for a sprinkler using an adapter unit using a circular packing 50 that is seated on a bulging portion 11 without using a cylindrical rubber tube 40 having a predetermined length And a connection method. It is a matter of course that a plurality of packings 50 can be fastened to the bulge forming part 11 when there are a plurality of bulge forming parts 11 in the adapter 10.

In the third step S320, the adapter 10 having the circular packing 50 fastened to one end of the connection pipe 20 connected to the sprinkler 100 is inserted. At this time, it is preferable that the inserting portion is inserted sufficiently in the direction of the corrugated tube portion 23 to form the bulging portion 11 at the time of inserting.

The stepped portion 12 formed inside the adapter 10 is brought into close contact with one side surface of the expanded portion 21 in the fifth step S340 after the expanded portion 21 is protruded outwardly at S330.

It is to be understood by those skilled in the art that the present invention may be embodied in many other forms without departing from the spirit and scope of the invention, the embodiments being exemplarily described above. It is therefore intended that the above-described embodiments be considered as illustrative rather than restrictive, and that all implementations within the scope of the appended claims and their equivalents are intended to be included within the scope of the present invention.

10: Adapter
11: bulge forming part 12:
20: Connection piping
21: expansion part 22: bulging part
23:
30: main pipe
40: Rubber tube
50: Packing
100: Sprinkler

Claims (9)

The inside of the main pipe 30 is connected to the connection pipe 20 so that the main pipe 30 is connected to the sprinkler 100. The inside of the pipe supports the one side of the expansion pipe 21 of the connection pipe 20 And a bulging portion (22) of the connecting pipe (20) is formed so as to protrude from the outer circumferential surface of the adapter (10) Step S100;
A second step (S110) of inserting the adapter (10) processed at one end of the connection pipe (20) connected to the sprinkler (100);
A third step (S120) of inserting a cylindrical rubber tube (40) having a predetermined length in the direction in which the adapter (10) is inserted;
One end of the connecting pipe 20 is provided with a step portion 12 formed inside the adapter 10 and the other end of the connecting pipe 20 protrudes outwardly so that the end portion of the main pipe 30 can be supported. (S130);
The outer peripheral edge of the rubber tube 40 is connected to the inner peripheral edge of the adapter 10 so that the rubber tube 40 can be positioned between the connection pipe 20 and the adapter 10, A fifth step (S140) of bringing one end of the rubber tube (40) to the side and the step portion (12) formed inside the adapter (10);
In order to prevent the adapter 10 from being pushed by the water pressure to the bulge portion 23 of the connection pipe 20, the adapter 10 (not shown) is inserted into the bulge forming portion 11 formed inwardly concave along the inner periphery inside the adapter 10 (S250) of forming a bulging portion (22) protruding outward so as to be able to support the bulging portion (22); And
And a seventh step (S260) of inserting the main pipe (30) at the other end of the adapter (10). The method according to claim 1,
Wherein the rubber tube (40) is a heat shrinkable rubber tube in which the diameter of a cylindrical shape is contracted when heat of a predetermined temperature is applied thereto. The method of claim 2,
The rubber tube 40 is heated and contracted to closely contact the connection pipe 20 and the rubber tube 40 and the adapter 10 are bonded to each other. Connection method. The method according to claim 1,
The bulging portion 22 protruding outward in the sixth step is formed so that the airtightness between the rubber tube 40 and the adapter 10 can be maintained by pressurizing and expanding the rubber tube 40 to prevent water leakage A connecting method of a sprinkler piping using an adapter unit to which a sprinkler is connected. The inside of the main pipe 30 is connected to the connection pipe 20 so that the main pipe 30 is connected to the sprinkler 100. The inside of the pipe supports the one side of the expansion pipe 21 of the connection pipe 20 And a bulging portion (22) of the connecting pipe (20) is formed so as to protrude from the outer circumferential surface of the adapter (10) Step 1 (S200);
A second step (S210) of inserting a cylindrical rubber tube (40) having a predetermined length into the fabricated adapter (10);
A third step (S220) of inserting an adapter (10) having a cylindrical rubber tube (40) fastened to one end of a connection pipe (20) connected to the sprinkler (100);
One end of the connecting pipe 20 is provided with a step portion 12 formed inside the adapter 10 and the other end of the connecting pipe 20 protrudes outwardly so that the end portion of the main pipe 30 can be supported. (S230);
The outer peripheral edge of the rubber tube 40 is connected to the inner peripheral edge of the adapter 10 so that the rubber tube 40 can be positioned between the connection pipe 20 and the adapter 10, A fifth step (S240) of bringing one end of the rubber tube (40) to the side and the step portion (12) formed inside the adapter (10);
In order to prevent the adapter 10 from being pushed by the water pressure to the bulge portion 23 of the connection pipe 20, the adapter 10 (not shown) is inserted into the bulge forming portion 11 formed inwardly concave along the inner periphery inside the adapter 10 (S250) of forming a bulging portion (22) protruding outward so as to be able to support the bulging portion (22); And
And a seventh step (S260) of inserting the main pipe (30) at the other end of the adapter (10). The method of claim 5,
Wherein the rubber tube (40) and the adapter (10) are bonded to each other in the second step. The method of claim 5,
The bulging portion 22 protruding outward in the sixth step is formed so that the airtightness between the rubber tube 40 and the adapter 10 can be maintained by pressurizing and expanding the rubber tube 40 to prevent water leakage A connecting method of a sprinkler piping using an adapter unit to which a sprinkler is connected. The inside of the main pipe 30 is connected to the connection pipe 20 so that the main pipe 30 is connected to the sprinkler 100. The inside of the pipe supports the one side of the expansion pipe 21 of the connection pipe 20 And a bulging portion (22) of the connecting pipe (20) is formed so as to protrude from the outer circumferential surface of the adapter (10) Step 1 (S300);
A second step (S310) of inserting a circular packing (50) into the bulge forming portion (11) inside the processed adapter (10);
A third step (S320) of inserting an adapter (10) having a circular packing (50) fastened to one end of a connection pipe (20) connected to the sprinkler (100);
One end of the connecting pipe 20 is provided with a step portion 12 formed inside the adapter 10 and the other end of the connecting pipe 20 protrudes outwardly so that the end portion of the main pipe 30 can be supported. (S330);
A fifth step (S340) of bringing the step portion (12) formed inside the adapter (10) into close contact with one side surface of the tube portion (21);
In order to prevent the adapter 10 from being pushed by the water pressure to the bulge portion 23 of the connection pipe 20, the adapter 10 (not shown) is inserted into the bulge forming portion 11 formed inwardly concave along the inner periphery inside the adapter 10 (S350) of forming a bulging portion (22) protruding outward so as to be able to support the bulging portion (22); And
And a seventh step (S360) of inserting the main pipe (30) at the other end of the adapter (10). The method of claim 5,
The bulging portion 22 protruding outwardly in the sixth step presses the packing 50 located in the bulge forming portion 11 to block leakage so that the airtightness between the packing 50 and the adapter 10 can be maintained Wherein the connecting portion is formed with a plurality of through holes.

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