KR101615921B1 - Apparatus for Sealing a Water Pipe Hole - Google Patents

Abstract

The present invention provides a device for closing an air discharge hole of a water pipe and a method for closing an air discharge hole of a water pipe. According to the present invention, an air discharge hole formed in a water pipe is firstly converted into a shape capable of screw connection, and the water pipe is secondarily stably closed by the screw connection. A manifold connection device represented as a spray device connected to the water pipe is removed. Even if water pressure supplied to the water pipe is suddenly and instantaneously changed, the device for closing an air discharge hole maintains the water pressure to be safe. According to the present invention, the device for closing an air discharge hole of a water pipe can be used by being assembled with four components as a simple device which is not complicated. So, the device for closing an air discharge hole of a water pipe enables workers to easily use the same.

Description

[0001] Apparatus for Sealing a Water Pipe Hole [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a branch pipe closing apparatus and a method of closing a branch pipe of a water pipe, and more particularly, And the water pipe can be securely maintained even if the water pressure supplied to the water pipe suddenly changes suddenly by firmly closing the water pipe by the screw connection, To a method of closing a branch hole.

Generally, the water taken from the water source is made into safe and clean water through a progressive water treatment process in the water purification plant, and then it is supplied to each final consumer through a water pipe embedded in the underground.

Since the water pipe buried in the ground is deeply embedded in the ground, it is safe from the cold on the ground and has the advantage of being not damaged or damaged outside. On the other hand, when a new supply of tap water is generated on the ground, It has the disadvantage that it can not easily do the same work.

In addition, the water supply pipe supplies purified water at a certain pressure in the water purification plant. In this case, when the operation is performed at a certain point, the water flow can not be stopped. And the work is performed by connecting the branch pipes.

On the other hand, there is a situation in which there is no need to supply the waterworks any more through the branch pipe formed in the existing water pipe. In such a case, there are several methods of processing the branch pipe connected to the water pipe.

First, the branch pipe connecting device connected to the water pipe is closed and left in this state. This method is to seal or close the branch connection of the branch connection device connected to the water supply pipe and then to leave the branch connection device connected to the original water supply pipe, And the side effects caused by it are not well known. However, when this method is implemented, the water in the branch pipe connection device is filled with the tap water that stops flowing, so that the water is changed into a dead water (dead water) with time, If there is a problem in the water supply pipe and the supply is shortened, the water (dead water) staying in the branch connection device flows into the separated water pipe, and as a result, the water pipe is contaminated, and the fresh water supplied by the contaminated water pipe There is a drawback that clean tap water is contaminated.

In this way, when the branch connecting device is left untouched and heavy equipment such as a forklrane is connected to the branch connecting device (or the saddle fountain) in the course of proceeding the underground digging work for installing a gas pipe or a sewer pipe, There is a problem that damage to the water pipe and / or unexpected leakage may occur during the underground digging work.

In order to overcome such disadvantages and problems, a method has been disclosed in which the branch pipe connecting device is separated from the water pipe, and the branch pipe formed in the water pipe is sealed. In this method, since the branch pipe connecting device is separated and removed in a state where the water pipe is singled, there is an advantage that no shooter is generated.

In this method, however, the branching hole is forced to be pushed into the branch hole formed in the water pipe by the elastic material, so that the pressure of the water flowing into the water pipe becomes low when the number of users of the water is low, There is a possibility that the stopper of the elastic material is gradually pushed out gradually from the branch pipe of the water supply pipe to generate a leak, because the pressure of water is fluctuated depending on the usage amount.

That is, the tap water supplied to the tap water pipe is supplied at a constant pressure in the water purification plant, but the pressure of the tap water is instantaneously increased or decreased as the user of the tap water is instantaneously decreased. There is a real fear that it will become.

The prior art relating to a method and apparatus for removing a branch connecting device connected to an existing water pipe and closing the branch pipe is as follows.

Korean Patent Publication No. 2010-35373 "Branching device" (Apr. Korean Patent No. 10-983640 "Separation method of the number of sutures and saddle fountain using the method" (Sep. 15, 2010); Korean Patent No. 10-624034 "Pipe tapping device" (September 7, 2006); Japanese Unexamined Patent Application, First Publication No. 2007-24178, "Removal Method Before Fountain" (Feb. 1, 2007); Korean Registered Utility Model No. 20-456898 "Link Lip Coupling Device" (Nov. 18, 2011)

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a branch pipe connecting device, which is connected to a water supply pipe in a state in which tap water is not splashed, is removed from a water supply pipe, The present invention provides a branch pipe closing device for a water pipe and a method for closing a branch pipe using the closing device, which can be safely maintained even when the water pressure supplied to the water pipe suddenly changes suddenly.

In addition, the present invention is a hand-operated device which can be operated in a simple and simple manner without using a complicated mechanical device, in which a screw is formed in a branch hole of a water pipe to be a work target by using one assembling device, And a method of closing a branch hole and a method of closing a branch hole capable of forming a closing plug by screwing in a formed branch hole.

In order to achieve the above-described object, the present invention provides a water treatment system comprising: a body support member coupled to a water pipe at a water pipe and having a shaft rod inserted therein; A shaft lifting member coupled to the body supporting member and capable of lifting and lowering and capable of lowering the shaft rod mounted therein; A threaded shaft bar mounted in the body support member and the shaft rod lifting member and lowered in accordance with the downward movement of the shaft rod lifting member to form a thread in the branch hole of the water pipe; A bolt fastening shaft rod which can be mounted inside the body support member and the shaft rod elevating member by replacing the screw forming shaft rod and is screwed to the branch hole of the newly formed water pipe that is lowered in accordance with the downward movement of the shaft rod elevating member; And is characterized by comprising:

The present invention is characterized in that the body supporting member and the shaft lifting member are engaged with each other, and then the screw forming shaft is inserted into the coupling body. In this state, a thread capable of screwing into the branch hole of the water pipe And then the screw-forming shaft rod is taken out and separated. In the present invention, the bolt fastening shaft is then coupled to the inside of the body of the body supporting member and the shaft rod lifting member to screw the closing bolt into the branch hole of the water pipe. According to the present invention, when the closing bolt by screwing is firmly coupled to the branch hole of the water pipe, the cylindrical body of the bolt fastening shaft rod is taken out and separated, and then the water outlet is separated from the water pipe.

As described above, the present invention is a passive mechanical device capable of primarily forming a screw thread in a branch hole of a water pipe using a single mechanical mechanism and screwing a closing bolt to the screw thread in a secondary manner, Is a mechanical device capable of closing a branch hole of a pipe.

In addition, the present invention includes a first step (S 210) of coupling a body supporting member and an axle lifting member to each other, inserting a threaded shaft into the body supporting member, and then coupling the body supporting member to a water pipe; The screw shaft rod of the shaft rod elevating member is rotated to lower the thread forming shaft rod present therein to bring the tapper coupled to the lower end into contact with the branch hole of the water pipe and then connect the polygonal screw shaft of the screw shaft rod to the manual tool (S 220) of rotating the polygonal throttle in the opposite direction to separate the tapper from the branch hole by rotating the polygonal throttle by rotating the polygonal throttle in a direction opposite to the direction of rotation of the pipe, A third step (S 230) of separating the body supporting member from the water outlet of the water pipe, taking out the screw forming shaft from the inside thereof, inserting the bolt fastening shaft into the body supporting member and the shaft lifting member, )Wow; The bolt fastening rod inside the bolt fastening shaft rod is rotated by rotating the shaft rod handle of the shaft rod elevating member and the closing bolt coupled to the lower end is brought into contact with the branch hole of the water pipe, and then the polygonal fastening screw of the bolt fastening shaft rod is manually And a fourth step S (S) of rotating the polygonal screw portion in the opposite direction to separate the circular body of the bolt fastening shaft from the branch hole 240; A fifth step (S 250) of a finishing work for separating the body supporting member from the water supply pipe of the water pipe and dismounting the water pipe from the water pipe when the closing bolt is screwed to the branch pipe of the water pipe; .

The branch-hole closing apparatus according to the present invention is not complicated, but is a simple machine tool, and four component parts can be assembled and used. Therefore, there is an advantage that workers can easily utilize.

Further, it can be seen that the branch-hole closing apparatus according to the present invention is a very efficient and beneficial machine tool because it can sequentially perform the thread forming operation and the thread connecting operation to the branch hole of the water pipe by using one mechanical device.

Further, according to the present invention, since the branch hole is formed in the branch hole formed in the conventional water pipe and the closing bolt is screwed to the thread, the closing bolt can be firmly coupled to the branch hole of the water pipe , So that there is no fear that the closing bolt will be released or pushed out from the branch hole even if a high-pressure water pressure is instantaneously applied to the water pipe.

1 is a schematic exploded perspective view of a branch hole closing apparatus 100 according to the present invention,
FIG. 2 is a schematic cross-sectional view illustrating a principle in which the body support member 110, the shaft rod lifting member 120, and the thread forming shaft 130 are coupled to each other,
3 is a schematic cross-sectional view illustrating the principle that the body support member 110, the shaft rod lifting member 120, and the bolt fastening shaft rod 140 are coupled to each other,
4 is a schematic sectional view showing the step of forming a thread in the branch hole 12 of the water pipe 10 by using the branch hole closing apparatus 100 according to the present invention,
5 is a schematic sectional view showing a step of coupling a closing bolt to a branch hole 12 of a water pipe 10 having a thread formed by using the branch hole closing apparatus 100 according to the present invention,
6 is a conceptual view showing another embodiment of the bolt fastening rod 150 constituting the branch hole closing apparatus 100 according to the present invention,
7 is an exemplary view showing a state in which a closing bolt is coupled to a water pipe 10 using a branch hole closing apparatus 100 according to 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 noted that the accompanying drawings are only for explaining the technical idea of the present invention in detail and that the technical idea of the present invention is not limited thereto and that various modifications are possible. In the description of the present invention, the same reference numerals are used for the same parts, and parts that can be easily created by those having ordinary skill in the art are omitted in the description of the present invention .

The branch pipe closing apparatus 100 of the present invention converts the branch pipe formed in the water pipe into a form that can be screwed in first and secondarily closes the water pipe firmly by screwing Next, the technical feature is to remove the branch connection device represented by the fractional connection combined in the water pipe, so that the water pressure supplied to the water pipe can be safely maintained even if it is suddenly changed suddenly.

1 is a schematic exploded perspective view showing a branch hole closing apparatus 100 according to the present invention.

A branch hole closing apparatus 100 according to the present invention includes a body support member 110 coupled to a water discharge hole 30 of a water pipe 10 and having a shaft inserted therein; A shaft lifting member 120 coupled to the body supporting member and capable of lifting and lowering the shaft rod mounted in the body supporting member; A screw-forming shaft rod 130 mounted in the body-supporting member and the shaft-rod elevating member and descending according to a downward movement of the shaft-rod elevating member to form a thread in a branch hole of the water-pipe; A bolt fastening shaft rod which can be mounted inside the body support member and the shaft rod elevating member by replacing the screw forming shaft rod and descended according to the downward movement of the shaft rod lifting member and screwing the closing bolt into the branch hole of the newly formed water pipe 150); .

FIG. 2 is a schematic cross-sectional view illustrating a principle in which the body support member 110, the shaft rod lifting member 120, and the screw formation shaft rod 130 are coupled to each other.

3 is a schematic cross-sectional view illustrating the principle of coupling the body supporting member 110, the shaft rod lifting member 120, and the bolt fastening shaft rod 150 of the present invention to each other.

The branch hole closing apparatus 100 according to the present invention is attached to the water supply conduit 30 of the water pipe 10 at the beginning of the operation and can be separated from the water supply conduit 30 of the water pipe 10 at the end of the operation, And a member (110).

The body supporting member 110 includes a pre-fractionation engaging portion 112 coupled to the water supply conduit 30 of the water pipe 10, a cylindrical vertical fixing body 114 that can be used by inserting a shaft rod therein, And a fixing body screw 115 formed outside the vertical fixing body. The pre-fraction coupling portion 112 is formed with a pre-fractionation engagement screw 113 therein, so that the pre-fractionation engagement portion 112 can be screwed to the fraction outlet 30. The fixed body screw 115 is used to screw the shaft rod lifting member 120.

The branch hole closing apparatus 100 according to the present invention includes a shaft lifting member 120 that can be screwed to the body supporting member 110 to move up and down.

The shaft lifting member 120 includes a cylindrical vertical transporting body 124 for inserting the body supporting member 110 therein and a feed body screw 124 for screwing the fixed body screw 115 in the vertical direction so as to vertically feed the body supporting member 110. [ A vertical shaft 122 and a vertical shaft 122. The vertical shaft 122 includes a vertical shaft 122 and a vertical shaft 122. The vertical shaft 122 includes a vertical shaft 122, And a shaft handle 126 coupled to an outer circumferential surface of the vertical transfer body 124.

The cylindrical vertical transfer body 124 is screwed to the fixing body screw 115 of the body supporting member 110 through the transfer body screw 125 formed on the inner surface thereof. Therefore, when the shaft handle 126 is rotated, the cylindrical vertical transfer body 124 is moved up and down along the vertical fixing body 114 of the body supporting member 110 by the screwing.

The branch hole closing apparatus 100 according to the present invention includes a thread forming shaft 130 inserted into a body of the body support member 110 and the shaft rod lifting member 120.

The thread forming shaft rod 130 functions to form a predetermined thread on the outer circumferential surface of the branch hole 12 of the water pipe 10 and includes a circular body 134 formed to be long in the vertical direction, A polygonal throat 132 located at the upper end of the cylindrical body 134 and an engaging portion 136 located at the lower end of the circular body 134. The engaging portion 136 may be detachably coupled to the engaging portion 136, And a tapper 140 for forming a thread in the branch hole of the tubular member 10.

The tapper 140 includes a polygonal coupling portion 142 for fitting the coupling portion 136 of the thread forming shaft 130 and a threaded portion 142 for forming a new thread on the branch hole 12 of the water pipe 10 A thread forming portion 144 and an inclined portion 146 formed at the lower end of the thread forming portion 144 so as to be inclined. The inclined portion 146 is fitted to the branch hole 12 of the water pipe, and allows the thread to be gradually formed little by little.

The branch hole closing apparatus 100 according to the present invention is inserted into the body of the body supporting member 110 and the shaft rod lifting member 120 and can be exchanged with the screw forming shaft rod 130, And includes a shaft rod 150.

The bolt fastening rod 150 also has a circular body 154 formed to be long in the vertical direction and a polygonal tightening portion 152 at the upper end of the circular body 154. The lower end of the circular body 154 And a threaded connection is made to the branch hole 12 of the water pipe 10 so as to firmly close the branch hole 12, (Not shown).

The closing bolt 160 includes a threaded coupling portion 162 that can be screwed into the shaft coupling portion 156 of the bolt coupling shaft rod 150 and a screw threaded portion 162 formed in the branch hole 12 of the water pipe 10, A thread closing portion 164 for screwing the threaded portion to the threaded portion 144, and a cut portion 166 for cutting the threaded bolt 160 after the threaded portion.

The branch hole closing apparatus 100 according to the present invention is configured such that the body supporting member 110 and the shaft rod lifting member 120 are combined to form a combined body composed of two components, The forming shaft rod 130 is coupled to form a thread in the branch hole 12 of the water pipe 10 and the bolt fastening rod 150 is coupled to the secondary pipe so that the closing bolt 12 of the water pipe 10 160 are screwed together so as to firmly close the branch hole 12 of the water pipe.

The branch hole closing apparatus 100 constructed as described above can firmly close the branch hole 12 of the water pipe 10 by the following method.

4 is a schematic sectional view sequentially showing steps of forming a screw thread in the branch hole 12 of the water pipe 10 using the branch hole closing apparatus 100 according to the present invention,

5 is a schematic sectional view sequentially showing the step of coupling a closing bolt to a branch hole 12 of a water pipe 10 in which a thread is formed using a branch hole closing apparatus 100 according to the present invention.

The method of closing the branch hole according to the present invention includes a first step (S 210) of coupling the body supporting member 110 and the shaft rod lifting member 120 to each other.

In the first step S 210, the body supporting member 110 and the shaft rod lifting member 120 are engaged with each other. This is accomplished by screwing the fixed body screw 115 of the body support member 110 and the transfer body screw 125 of the shaft rod lifting member 120. When the body supporting member 110 and the shaft lifting member 120 are coupled to each other, the thread forming shaft 130 is inserted into the body supporting member 110 and the shaft lifting member 120. In this state, the pre-fractionation engaging portion 112 of the body supporting member 110 is screwed to the water supply outlet 30 of the water pipe 10. [

The method of closing the branch hole according to the present invention includes a second step (S 220) of forming an internal thread of the branch hole (12) of the water pipe (10) by using the screw formation shaft rod (130).

In the second step S 220, first, the shaft rod handle 126 of the shaft rod lifting member 120 is rotated to lower the thread forming shaft rod 130 existing therein. When the shaft lifting member 120 is lowered downward, the upper end of the screw forming shaft rod 130 existing inside the shaft lifting member 120 is in close contact with the shaft end closing member 122 of the shaft lifting member 120, The lowering motion of the lifting member 120 is naturally concurrently performed. When the threaded shaft 130 descends downward, the tapper 140 coupled to the lower end of the threaded shaft 130 comes into contact with the branch hole 12 of the water pipe 10.

In this state, even if the worker applies a force, the threaded shaft rod 130 no longer descends downward, so that the worker stops the rotation of the shaft rod handle 126, To the thread forming operation of the screw. The operator inserts the manual tool M into the polygonal tightening portion 132 of the thread forming shaft 130 and rotates the tapper 140 to form a thread in the branch hole 12 of the water pipe 10. [

When the screw thread is completely formed, the force applied to the manual tool M is suddenly reduced, so that the operator rotates the polygonal screw portion 132 in the opposite direction again. The tapper 140 is completely separated from the branch hole 12 and the process proceeds to the next step.

The method of closing the branch hole according to the present invention includes a third step (S 230) in which the screw formation shaft rod 130 and the bolt coupling shaft rod 150 are used interchangeably.

The third step S 230 separates the body support member 110 from the water supply conduit 30 of the water pipe 10. The separating operation may be performed by rotating the fixing body screw 115 of the body supporting member 110 in a direction opposite to that of the engaging portion at the time of the fitting. The thread forming shaft rod 130 is taken out from the body supporting member 110 and the shaft rod lifting member 120 in combination.

Next, the bolt fastening shaft rod 150 is inserted into the body of the body supporting member 110 and the shaft rod lifting member 120 to prepare the next step by replacing the bolt fastening shaft rod 150 with the bolt fastening shaft rod 150.

The method of closing the branch hole according to the present invention includes a fourth step S 240 of screwing the closing bolt 160 to the branch hole 12 of the water pipe 10 using the bolt tightening rod 150 have.

In the fourth step S 240, first, the shaft rod handle 126 of the shaft rod lifting member 120 is rotated to lower the bolt fastening rod 150 existing therein, and the closing bolt 160) to the branch hole (12) of the water pipe (10). The lowering motion of the shaft lifting member 120 and the lowering motion of the bolt tightening rod 150 are the same as those described above.

When the closing bolt 160 touches the branch hole 12 of the water pipe 10, the bolt fastening rod 150 does not descend further downward even if the worker applies a force, 126 and turn the closing bolt 160 into an operation of screwing the closing bolt 160 to the branch hole 12 of the water pipe 10. The operator inserts the manual tool M into the polygonal tightening portion 152 of the bolt fastening rod 150 and rotates the bolt fastening rod 150 directly. When the closing bolt 160 is rotated and screwed into the branch hole 12 of the water pipe 10, the rotation operation is stopped.

The closing bolt 160 is screwed, and then the polygonal throttling portion 152 is rotated in the opposite direction. The circular body 154 of the bolt fastening rod 150 is separated from the closing bolt 160 and moved upward in a state where the closing bolt 160 is screwed into the branch hole 12 .

The method of closing the branch hole according to the present invention is characterized in that when the closing bolt 160 is screwed to the branch hole 12 of the water pipe 10 and finally the water outlet 30 is dismantled from the water pipe 10 And a fifth step (S 250) of finishing work.

The fifth step S 250 separates the body support member 110 from the water supply conduit 30 of the water pipe 10. As described above, the separating method may be performed by rotating the fixed body screw 115 of the body supporting member 110 in a direction opposite to the fitting direction at the time of the water supply.

Then, when the fractional water source 30 is disassembled from the water pipe 10, the final finishing work is performed. If necessary, the cut portion 166 of the closing bolt 160 may be cut to finish the finishing work. This method can be carried out in a normal operation.

6 is a conceptual diagram showing another embodiment of the bolt fastening rod 150 constituting the branch hole closing apparatus 100 according to the present invention,

7 is an exemplary view showing a state in which a closing bolt is coupled to a water pipe 10 using a branch hole closing apparatus 100 according to the present invention.

It is preferable that the bolt fastening rod 150 is further improved and used in the branch hole closing apparatus 100 according to the present invention.

The bolt fastening rod 150 can be used as it is coupled to the water pipe 10 without cutting the closing bolt 160 coupled to the circular body 154 after the operation. For this purpose, it is preferable that the axial joint portion 156 existing at the lower end of the bolt fastening rod 150 is formed into a polygonal rod shape.

It is preferable that the closing bolt 160 has a polygonal groove 163 formed at the upper end thereof so that the rod shape of the polygon can be inserted.

When the branch hole closing apparatus 100 according to the present invention is used or the branch hole closing method according to the present invention is used, the closing bolt 160 is firmly coupled to the branch hole 12 of the water pipe, The member 20 can be covered and the finishing operation can be performed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, And the range is determined and limited by the claims.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope of the present invention.

100: Closure device of a branch hole
110: body supporting member, 112: pre-fraction coupling portion,
114: vertical fixing body, 115: fixing body screw,
120: Axis elevating member, 122: Axis sticking portion,
123: Axial through hole, 124: Vertical conveying body,
126: Axial handle, 130: Screw-forming shaft,
132, 152: polygonal tightening portion, 134, 154: round body,
136: coupling portion, 140: tapper,
142: polygonal coupling portion, 144: thread forming portion,
146: an inclined portion, 150: a bolt tightening rod,
156: shaft coupling portion, 160: closing bolt,
162: thread connecting portion, 164: thread closing portion,
166: Cutting section, M: Manual tool
10: a water pipe, 12: a branch pipe,
20: Protective saddle member, 30: Fountain precursor

Claims (5)

A cylindrical vertical fixing body 114 which can be used by inserting a shaft into the water pre-coupling part 112 to be connected to the water discharge front 30 of the water pipe 10, A body support member 110 including a body screw 115;
A cylindrical vertical conveying body 124 for inserting the body supporting member 110 therein, a conveying body screw 125 for vertically conveying the body supporting member 110 by screwing the fixing body screw 115 in correspondence with the fixing body screw 115, A shaft bar penetrating hole 123 formed in the upper end of the body 124 in a cylindrical hole shape and a rod tight contact portion 122 clogged in a roof shape from the shaft bar penetrating hole 123 and an axial rod handle 126 (not shown) joined to the outer peripheral surface of the vertical transfer body 124 A shaft lifting member 120 including a shaft supporting member 120;
A circular body 134 mounted inside the combined body of the body supporting member 110 and the shaft lifting member 120 and formed to be long in the vertical direction and a circular body 134 formed in the upper end of the circular body 134, A coupling part 136 provided at the lower end of the circular body 134 and a coupling part 136 formed at the lower end of the circular body 134 so as to be detachably coupled to the coupling part 136, The tapper 140 includes a polygonal engaging portion 142 for fitting the engaging portion 136 and a threaded portion 142 formed on the diaphragm 12 of the water pipe 10, A thread forming shaft 130 including an inclined portion 146 formed at a lower end thereof;
A circular body 154 which can be mounted inside the combined body of the body supporting member 110 and the shaft lifting member 120 by replacing the thread forming shaft rod 130 and formed to be long in the vertical direction, A polygonal tightening portion 152 existing at the upper end of the circular body 154 and an axial joint portion 156 existing at the lower end of the circular body 154 and a shaft- And a closing bolt 160 which can tightly close the branch hole 12 by performing thread engagement with the branch hole 12 of the water pipe 10, A thread closing portion 164 which is screwed to the thread forming portion 144 formed in the branch hole 12 of the water pipe 10; A bolt fastening shaft rod 150 including a cutout 166 for cutting the closing bolt 160; of
(100) of the water pipe branch.
delete delete The method according to claim 1,
The bolt fastening rod 150 has a bar-shaped rod-like engaging portion 156 at the lower end of the circular body 154,
Wherein the closing bolt (160) has a polygonal groove (163) into which the rod shape of the polygon can be inserted, at its upper end.
delete

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