KR101910485B1 - Method and structure for connecting water pipe line - Google Patents

Abstract

The present invention relates to a method to connect a water pipe, capable of realizing strong sealing, and a connection structure thereof. According to the present invention, the method to connect a water pipe comprises: a step (a) of arranging a water pipe to be connected in an installation place; a step (b) of cleaning a socket part and an insert of the water pipe; a step (c) of sequentially inserting a pressing ring and a rubber ring into the outer circumference of the insert; a step (d) of allowing the packing to come in contact with an end part of the insert and coupling a packing insertion part with a predetermined length extended to one side of the packing to the outer circumference of the insert to prevent movement and separation of the packing; a step (f) of coupling 1/2 to 1/3 of a connection nut to a screw part of the fixing bolt selected by equal intervals or to be close to the equipment interval among temporarily coupled fixing bolts; a step (g) of coupling the front screw part of a headless bolt to the connection bolt; a step (h) of inserting the rear screw of the headless bolt into an elongated hole of a support band and fixing the support band to the outer circumference of the water pipe close to the pressing ring; a step (i) of coupling a pulling nut to the rear screw part of the headless bolt inserted into the elongated hole of the support band to closely adhere the packing between the socket part and the insert; and a step (j) of coupling the temporarily coupling fixing nut to completely seal the socket part and the insert as the pressing ring moves and presses the rubber ring. The step (d) includes a step of inserting an O-ring into the upper surface of the outer circumference of a packing grip part to closely adhere an end portion of the packing grip part to the outer circumference of the insert.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for connecting a water pipe,

The KP mechanical joining method is mainly used in the piping of the water pipe, and the present invention relates to a connection method of the water pipe (water pipe) and its connection structure applied in this field.

Generally, a water supply pipe refers to a conduit used for supplying and distributing purified water from a water purification plant (water purification facility) to a customer, and is constructed in such a manner that a plurality of cast iron pipes formed by a certain length are connected as long as necessary.

Since most of these water pipes are constructed with a length corresponding to a very long distance, they are manufactured in a state of being designed by a certain length, and they are installed while being connected to the construction distance. In the connection part, The watertightness of the water pipe is achieved and leakage is prevented.

The diameter of water pipes produced by cast iron pipes in Korea varies from 80mm to 1,200mm, and KP mechanical joint method, which is one of the piping methods of water pipes, is mainly used. The present invention is applied to this field, and an embodiment thereof will be described later.

1 shows a connection state of a conventional water pipe using a KP mechanical joint method, wherein water pipes 3 and 4 are formed in a water pipe 1 (2) composed of a cast iron pipe having a predetermined length and a predetermined inside diameter A socket portion 5 is formed at one end of the water pipe 1 (2), and a spout 6 is formed at the other end. The spigot 6 is engaged with the socket portion 5 of the adjacent water supply pipe and the outer peripheral edge of the spigot 6 is caught by the socket portion 5 in a state where the rubber ring 7 and the pressure roller 10 are sandwiched The plurality of fixing bolts 8 are inserted into the through holes 10a formed at the end portions of the rollers 10 and then fastened with the fixing nuts 9 so that the rollers 10 advance and the rubber rings 7 The watertightness and leakage of the connection portion of the water supply pipe (1) (2) are achieved.

The inside / outside circumference of the water pipe (1) (2) is covered with a finishing material to prevent oxidation and increase the durability. The outer finishing material 12 may be formed by thinly coating the oil paint so that the water pipes 1 and 2 are not oxidized and the inner finishing material 11 may have a thickness of about 2 mm when the inner diameter of the water pipe 1, Of the cement mortar of 6 to 8 mm in thickness when the inside diameter of the water supply pipe (1) (2) is 600 mm or more.

That is, an epoxy resin coating or a cement mortar lining method which is harmless to the human body is applied to the inside of the water pipe (1) (2) where the constant flows, and the exterior of the water pipe (1) (1) and (2) are prevented from being oxidized.

In the meantime, since the water supply pipe (1) (2) is delivered and constructed, the water supply pipe is moved and unloaded, and even if the operator is careful, The ends of the socket 5 and the spigot 6 are mainly subjected to an impact such as an external pressure or a collision and even when the water pipe 1 or 2 is piped, As the impact is applied, some damage (breakage) occurs, and the damaged part is easily oxidized.

In addition, if the material left after piping the water pipe (1) (2) is stored for a certain period of time, it is used at a necessary period. At this time, a shock is applied to the socket portion (5) It is damaged as it is applied.

(13) and oxidizing substances (such as lime), such as paint and / or a lump or powder of epoxy resin and / or cement mortar, falling off from the damaged part are generated. In this state, the water pipe (1) The foreign matter 13 and the oxidizing substances are infiltrated into and mixed with the high pressure water 14 flowing along the water conduits 3 and 4 to pollute the water. ), And it becomes very detrimental if you use or drink such contaminated constants.

In addition, the portion of the water pipe (1) (2) from which the cover is peeled is easily oxidized as shown in FIG. FIG. 2A is an actual photograph taken after being separated from a water pipe to replace a water pipe having a diameter of 1,100 mm. FIG. 2B is a state in which the paint is peeled off at the end of the water pipe of the water pipe, The actual picture of the pipe in the state of very oxidation of the spit was that the paint of the consumer and the rust was discharged by the water challenge of the consumer.

Therefore, in the case of the conventional water supply pipe 1 or 2, the paint powder and the liquor are mixed with the water through the gap 15 formed between the socket portion 5 and the spout 6 of the water pipe 1 (2) ) And contaminating the constant (14) continuously.

Korean Patent Registration No. 10-0910340 (Title of the Invention: Connection Structure of Water Supply Pipes, Patent Publication on Aug. 04, 2009) Korean Patent Registration No. 10-0738599 (title of the invention: connection structure of water pipes preventing leakage of joints, 2007. 07. 12. Patent publication) Korean Patent Registration No. 10-1295175 (Title of the Invention: Connection Device for Water Supply Pipe, Patent Publication of Mar. 08, 09, 2013)

It is a further object of the present invention to provide a method of manufacturing a water pipe, which uses a support band and a pulling means to be fastened to the outer periphery of a water pipe, and a rubber ring is coupled between the socket and the shovel, And sealing is performed.

It is a further object of the present invention to provide a packing inserting unit in which an O-ring is fitted on an outer peripheral upper portion of the packing inserting unit so that the end of the packing inserting unit is brought into close contact with the outer circumference of the water supply pipe to prevent the oxidizing substances and foreign substances generated in the inserting hole .

Another object of the present invention is to provide a packing inserting unit in which an inclined protrusion is formed on the upper end surface of the packing inserting unit so that the end of the packing inserting unit is brought into close contact with the outer circumference of the water supply pipe to thereby allow oxidizing substances, ).

It is a further object of the present invention to provide a packing unit, which is coupled between water pipes, and which has an inclined shape to connect a water supply pipe having a large connection angle.

A method of connecting a water pipe of the present invention comprises the steps of: a) listing a water pipe to be connected to an installation site; b) cleaning the sockets and spouts of the water line; c) placing the pressure ring and the rubber ring in turn on the outer periphery of the spigot; d) contacting the packing at the end of the spigot, and then connecting the packing-inserting portion of a predetermined length extending to one side of the packing to the outer periphery of the spigot to prevent flow and deviation of the packing; e) inserting a plurality of fixing bolts, which are hooked on the socket portion, into the through holes of the pressure ring, and then fusing the fixing bolts with a fixing nut; f) tightening the connecting nut to 1/2 ~ 1/3 to the screw part of the fixing bolt selected so as to be close to the equal interval or equal interval among the fixing bolts fastened to each other; g) fastening the tip thread of the tongue bolt to the connecting nut; h) fixing the support band to the outer periphery of the water pipe close to the pressure ring after inserting the rear end thread of the tongue bolt into the slot of the support band; i) tightening the pulling nut on the rear end thread portion of the tongue bolt inserted into the elongated hole of the support band to tightly couple the packing between the socket portion and the shovel; j) is tightened, and the pressure ring moves and presses the rubber ring to completely seal the socket portion and the spigot.

A method of connecting a water pipe of the present invention comprises the steps of: a1) listing a plurality of water pipes at an installation site; b1) cleaning the socket portion and the spigot of the water supply pipe; c1) sandwiching the pressure ring and the rubber ring on the outer periphery of the spigot; d1) contacting the packing at the end of the spigot, and then connecting a packing-inserting portion of a predetermined length extending to one side of the packing to the outer periphery of the spigot to prevent flow and deviation of the packing; e1) Insert a plurality of fixing bolts that are hooked to the socket part into the through holes of the pressure ring. Then tighten with a fixing nut, and tighten the bolts with a long nut at 1/5 - 1/4 disjoint step; f1) fastening the tip thread of the tongue bolt to the long nut; g1) fixing the support band to the outer circumference of the water pipe near the pressure ring after inserting the rear end thread of the tongue bolt into the slot of the support band; h1) tightening the pulling nut to the rear end thread portion of the tongue bolt inserted into the slot of the support band to tightly adhere the packing between the socket portion and the shovel; i1) is tightened with a nut to tighten the socket and the spigot while the rolling wheel moves and presses the rubber ring.

A method of connecting a water pipe of the present invention comprises the steps of: a2) listing a connection target water pipe at a place of installation; b2) cleaning the socket portion and the spigot of the water supply pipe; c2) sandwiching the pressure ring and the rubber ring on the outer periphery of the spigot; d2) connecting the packing to the end of the spigot, and then connecting the packing insert to the outer periphery of the spigot by extending to one side of the packing to prevent the flow and deviation of the packing; e2) a plurality of fixing bolts, which are hooked to the socket portions, are inserted into the through holes of the pressure rings, and then the fixing nuts are fastened to each other. The hooks are hooked on the socket portions, Inserting a long bolt and then mating with a fixing nut; f2) fixing the support band to the outer periphery of the water pipe close to the pressure ring after inserting the screw portion of the long bolt into the slot of the support band; g2) tightening the pulling nut on the threaded portion of the elongated bolt inserted into the elongated hole of the support band to tightly connect the packing between the socket portion and the shovel; h2) tightening the fixing bolt and the fixing nut fastened to the long bolt to completely seal the socket portion and the spigot while the rolling wheel moves and presses the rubber ring.

The method of the present invention comprises the steps of: (d) contacting a packing to an end of a spigot and then connecting a packing-inserting portion of a predetermined length extending to one side of the packing to the outer periphery of the spigot to prevent flow and departure of the packing; and d1 ) And a step (d2)), the O-ring is fitted on the outer circumferential upper surface of the packing inserting portion so that the end portion of the packing inserting portion is brought into close contact with the outer circumference of the spigot to prevent the oxidizing substances and foreign substances, And a step of preventing the user.

A water pipe connection structure of the present invention comprises a rubber ring which is coupled between a socket portion and a spool of a water supply pipe and is press-supported by a pressure roller, a hook portion which is hooked to a socket portion of the water supply pipe, And a plurality of fixing bolts for supporting the pressure rolls; A packing sealing portion which is extended to one side of the packing and is coupled to the outer periphery of the spigot; an O-ring for pressing and supporting the upper end surface of the packing sealing portion; A connecting nut fixed to the threaded portion of the fixing bolt, a front threaded portion of the tongue bolt fastened to the connecting nut, a supporting band fixed to the outer periphery of the spout by fastening means, and a support band And a pulling nut fastened to a rear end thread portion of the tongue bolt inserted into the slot of the support band.

A water pipe connection structure of the present invention comprises a rubber ring which is coupled between a socket portion and a spool of a water supply pipe and is press-supported by a pressure roller, a hook portion which is hooked to a socket portion of the water supply pipe, And a plurality of fixing bolts for supporting the pressure rolls; A packing sealing portion which is extended to one side of the packing and is coupled to the outer periphery of the spigot; an O-ring for pressing and supporting the upper end surface of the packing sealing portion; A long thread nut to be fastened to the threaded portion of the fastening bolt, a front threaded portion of the fastening bolt to be fastened to the long nut, a support band to be fastened by fastening means to the outer periphery of the spout, and a rear threaded portion of the fastening bolt And a pulling nut fastened to a rear end thread of the tongue bolt inserted into the slot of the support band.

A water pipe connection structure of the present invention comprises a rubber ring which is coupled between a socket portion and a spool of a water supply pipe and is press-supported by a pressure roller, a hook portion which is hooked to a socket portion of the water supply pipe, And a plurality of fixing bolts for supporting the pressure rolls; An o-ring for pressing and supporting the upper end surface of the end portion of the packing inserting portion, and an o- A threaded portion of the elongated bolt to be engaged with the elongated hole of the supporting band, a supporting band fixed to the outer periphery of the spigot by the fastening means, And a pulling nut fastened to the threaded portion of the long bolt inserted into the long hole of the long bolt.

And an inclined protrusion formed on an upper end surface of the packing insertion portion.

The inclination angle of the inclined protrusion may be 3 to 10 degrees greater than the inclination angle of the inclined surface formed on the socket portion.

The packing may be an inclined packing with a coupling angle.

In this case, when the water pipe is not connected straightly, the packing is not tightened, so that the packing is inclined or inclined so that the tightness and water tightness can be achieved at the connection portion of the water pipe in consideration of the inclination of the connected water pipe. .

The present invention is characterized in that a soft and tough packing 17 is joined between a socket portion 5 of a connected water supply pipe 1 and a spigot 6 to achieve watertightness, A double stubborn watertightness can be achieved.

The packing 17 of the present invention is attached to the spigot 6 by the flange-like packing, packing-inserting portion 18, which surrounds the side surface 6a and a part of the outer periphery of the spigot 6 by the extending packing- So that the packing 17 is prevented from flowing or being displaced when the socket 5 and the spigot 6 are engaged.

The packing 17 of the present invention surrounds the side surface 6a of the spigot 6 and the packing insertion portion 18 covers the outer circumferential edge of the end portion of the spigot 6 and is wrapped 16, so that foreign substances such as paint, lunar or oak, which are generated at the outer surface of the spout 6 and the side surface 6a of the spout 6, which are coated with the general paint, are hardly generated, (3) (4), the contamination of the constant water (14) is prevented.

The present invention relates to a support band (20) provided on the outer circumference of a water pipe (2) when a socket part (5) of a water pipe (1) (2) (Tightened) with the fastening bolts 8 in the state of being tightened with the socket part 5, the packing 17 and the spigot 6 in close contact with each other by using the fastening bolt 25 or the long bolt 27, Since the connection of the pipe (1) (2) is completed, the water pipe (1) and the water pipe (2) are connected to each other.

The present invention has the effect of achieving stubborn watertightness by using the oblique packing 17a when the connection angle 3 between the water pipe 1 and the water pipe 2 is large.

The present invention is characterized in that the end portion of the packing insertion portion 18 is pressed by the O-ring 16 or the inclined projection 18a formed at the end portion of the packing insertion portion 18 is inserted into the inclined surface 5a of the socket portion 5, (3) (4) formed by the outer surface of the spigot (6) and the side surface (6a) of the spigot (6) by pressing the end portion of the packing insertion portion (18) So that contamination of the constant water 14 can be prevented and a sanitary constant 14 can be supplied.

Fig. 1 is a connection diagram of a conventional water supply pipe shown in an example.
FIG. 2a: Photograph of the state where the spigot part of the water pipe is oxidized.
FIG. 2b is a photograph of a state where the end portion of the water pipe is very oxidized.
Fig. 3 is a process chart of the connection method of the water pipe shown in one example of the present invention.
4 is a cross-sectional view of the state in which the outer periphery of the spigot is coupled with the pressure roller in the present invention;
5 is a cross-sectional view of a state in which a pressure ring and a rubber ring are joined to the outer periphery of the shoelace in the present invention.
Fig. 6 is a cross-sectional view of the state in which the packing is joined to the end of the fastener in the present invention. Fig.
Fig. 7 is a cross-sectional view of the present invention in which the packing is joined to the end of the fastener and the support band is fixed.
8 is a cross-sectional view of a state in which an O-ring is press-fitted on the upper end surface of the packing insertion portion in the present invention.
Fig. 9 is a cross-sectional view of the present invention showing a state before the fastener is coupled to the socket portion of the water pipe;
10 is a cross-sectional view of the sewage pipe before the fastener is coupled to the socket portion in the present invention.
11 is a cross-sectional view of a state in which a socket is coupled to a socket portion of a water supply pipe in the present invention.
12 is a cross-sectional view of a state in which a socket is coupled to a socket portion of a water pipe in the present invention.
Fig. 13 is a cross-sectional view of a state where a fixing bolt coupled to a pressure roller is integrally joined in the present invention. Fig.
14 is a cross-sectional view of the present invention in a state where it is fastened with a fixing nut and a pulling nut;
15 is a sectional view of a section without a tundown bolt in the present invention.
16: exploded perspective view of the present invention.
Fig. 17 is a perspective view of the joined state of the present invention. Fig.
18: sectional view of the packing part in the present invention.
Fig. 19 is a cross-sectional view of a packing portion shown as another example in the present invention.
20 is a cross-sectional view of a state in which an oblique packing is used in the present invention.
21: sectional view of the oblique packing part in the present invention.
22 is a process chart of a connection method of a water pipe shown in another example of the present invention.
23 is a cross-sectional view of another embodiment of the present invention before the socket portion of the water supply pipe and the shovel are joined.
24 is a cross-sectional view of another embodiment of the present invention in which a socket portion of a water supply pipe and a spigot are combined.
Fig. 25 is a cross-sectional view of another embodiment of the present invention in which a socket portion of a water supply pipe and a spigot are combined.
26 is a cross-sectional view of the fastening bolt shown in another example of the present invention.
Fig. 27 is a cross-sectional view of the fastening bolt shown in another example of the present invention.
28: An exploded perspective view showing another example of the present invention.
29 is a perspective view of a coupled state shown in another example of the present invention.
Figure 30 is a process flow diagram of a water pipe connection method as another example of the present invention.
Fig. 31 is a cross-sectional view showing another embodiment of the present invention before joining the spigot to the socket portion of the water supply pipe.
32 is a cross-sectional view showing a state in which a socket portion and a spigot of a water supply pipe shown in another embodiment of the present invention are combined.
Fig. 33 is a cross-sectional view of the water pipe shown in still another embodiment of the present invention in a state where the socket and the shovel are combined.
Fig. 34 is a cross-sectional view of the fastening bolt shown in still another embodiment of the present invention. Fig.
35 is a cross-sectional view of the fastening bolt shown in still another embodiment of the present invention.
36 is an exploded perspective view showing still another example of the present invention.
Fig. 37 is a perspective view of the joined state shown as yet another example of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the embodiments of the present invention, the same components as in the drawings are denoted by the same reference numerals as possible, and detailed descriptions of known configurations and functions are omitted so as not to obscure the gist of the present invention. May be different from what is actually implemented with the schematized drawings in order to easily describe the embodiments of the present invention.

The present invention is characterized in that a spigot 6 to which a packing 17 is coupled is joined to a socket portion 5 and a plurality of pulling means (a tongue bolt, a long bolt The packing 6 and the socket 5 are pulled out so that the packing 17 is fixed tightly between the water supply pipe 1 and the water supply pipe 2 in the state of being closely contacted with the fixing bolt 8, The socket 10 and the spigot 6 are completely sealed while the roller 10 moves and presses the rubber ring 7. The pulling means may be a fixed bolt selected at regular intervals among the plurality of fixed bolts 8 fixed to the rolling wheel or a fixing bolt 8 fixed at a distance or position close to an equal interval, And the bolt (long bolt 27) itself is configured to be long so as to serve also as a function as a fixing bolt 8 for fixing the roller 10 and a function as a pulling means.

FIG. 3 is a process diagram of a connection method of a water pipe shown in an example of the present invention, FIG. 22 is a process diagram of a connection method of a water pipe shown in another example of the present invention, and FIG. 30 is a process diagram of a connection method of a water pipe shown in another example of the present invention 1, 2, and 3, respectively.

Example 1

In the first embodiment of the present invention, when the number of the through holes 10a formed in the roller 10 and the number of the fixing bolts 8 inserted respectively in the through holes 10a are, for example, 24, 8 and the twelfth fixing bolt 8 and the 18th fixing bolt 8 and the 24th fixing bolt 8 by means of the connecting nut 21, And the rear end thread portion 22b of the tongue bolt 22 is inserted into the elongated hole 20a of the support band 20 fixed to the spigot 6 and then is fastened with the pulling nut 23, The fixing nut 9 fastened to the fixing bolt 8 is completely pulled out by pulling the socket 5 and the spigot 6 of the fixing bolt 8 in a state in which the packing 17 is evenly pressed with a uniform pressure The connection of the water pipe 1 and the water pipe 2 is completed by completely sealing the socket portion 5 and the spool 6 while the pressure ring 10 moves and presses the rubber ring 7, (2), the packing (17) is pressed at an even pressure The gaps 15 are eliminated so that harmful foreign substances such as paint powder and rust generated in the outer end of the spout 6 and the socket portion 5 and the side surface 6a of the spout 6 contact the water pipe 3 4) so that contamination of the constant water (14) is prevented.

3, the water pipe connection method according to the first embodiment of the present invention is characterized in that the connection target water pipe (1) (2) is mounted or seated in the installation place so that the socket portion (5) (Step a), the socket portion 5 and the spigot 6 of the water supply pipe 1 (2) are cleaned (Step b). Then, as shown in Figs. 4 and 5, 6, the seal 17 is brought into contact with the end of the spigot 6 as shown in FIG. 6, and the packing 17 (see FIG. 7) (Step d), the packing 17 is inserted into the socket part 5 as shown in FIG. 13, and the packing 17 is inserted into the socket part 5, A plurality of fastening bolts 8 for fastening the hook portions 8a are inserted into the through holes 10a of the roller 10 and fastened to the fastening nuts 9 (Step e) Fixed balls selected to be close to equidistant or equidistant A connecting nut 21 having a length 2 to 4 times longer than the length of the fixing nut 9 is fastened to the threaded portion 8a of the fastening bolt 8 and fastened by 1/2 to 1/3 as shown in FIG. The front end thread portion 22a of the tongue bolt 22 is fastened to the connecting nut 21 partially fastened to the fixing bolt 8 so that the front end thread portion 22a of the tongue bolt 22 can be fastened (Step g), the rear end thread portion 22b of the tongue bolt 22 is inserted into the elongated hole 20a of the support band 20 and then the support band 20 And the pulling nut 23 is fastened to the rear end thread portion 22b of the tongue bolt 22 inserted into the elongated hole 20a of the support band 20 to fix the socket portion 5, 11 and 14, when the packing 17 is completely attached, the fixing nuts 9 fastened to the packing 17 are fully tightened so that the pressure roller 10 While the rubber ring 7 is moved and pressed, the socket portion 5 If so completely closing the opening (6), water supply tube (1) the connection (2) is completed (step j).

When the connection of the water supply pipe 1 and the water supply pipe 2 is completed, the support band 20, the tongue bolt 22, the nuts 21 and 23 can be removed, 2 are maintained firmly.

The packing inserting portion 18 is coupled to the outer periphery of the packing 6 at a predetermined length so as to prevent the packing 17 from flowing or being displaced. 16 and the end portion of the packing insertion portion 18 is brought into close contact with the outer circumference of the water supply pipe 2 such as the spout 6 so as to form an outer end portion of the spout 6, Thereby preventing foreign matter or the like from entering (entering) into the constant 14.

The O-ring 16 is pre-fitted in the packing packing inserting portion 18 in such a manner that the pressure ring 10, the rubber ring 7 (KP rubber ring) and the O-ring 16 are successively fitted to the outer periphery of the spigot 6 in Step c, Or the packing inserting portion 18 is coupled to the outer periphery of the spigot 6 in the step d and then the packing inserting portion 18 is inserted into the outer peripheral edge of the packing inserting portion 18 with the O- Can be configured to be pressurized.

In the case of the first embodiment, there is an advantage that the existing KP mechanical method can be used as it is without modification.

Example 2

In the second embodiment of the present invention, the number of the through holes 10a formed in the roller 10 and the number of the fixing bolts 8 fitted in the through holes 10a are, for example, 24, (8), the twelfth fixing bolt (8), the 18th fixing bolt (8), and the 24th fixing bolt (8) The first to fifth fixing bolts 8, the seventh to eleventh fixing bolts 8 and the other fixing bolts 8 are fastened with about 1/5 to 1/4 of the fixing bolts 8, A general fixing nut 9 is fastened to the 13th to 17th fixing bolts 8 and 19th to 23rd fixing bolts 8 and the long nut 24 is fastened to the front end thread portion of the tongue bolt 25 And the rear end thread portion 25b of the tongue bolt 25 is inserted into the elongated hole 20a of the support band 20 fixed to the spigot 6 and then is fastened with the pulling nut 26, The tongue bolt 25 catches the socket portion 5 and the spigot 6 of the water supply pipe 1 (2) The packing 17 positioned therebetween is brought into close contact uniformly with a uniform pressure so that the fixing nut 9 fastened to the fixing bolt 8 and the slotted nut 24 are completely fastened to each other, The connection of the water supply pipes 1 and 2 is completed by completely sealing the socket portion 5 and the spigot 6 while moving and pressing the rubber ring 7 between the water pipes 1 and 2 Since the gap 15 is eliminated as the packing 17 is tightly coupled with the uniform pressure, the paint 15, which is generated at the outer end of the spigot 6, the socket portion 5, the spigot 6 side 6a, The harmful foreign matter does not flow into the water line 3 (4), and thus the contamination of the water 14 is prevented.

As shown in Figs. 22 to 29, the water pipe connection method according to the second embodiment of the present invention is such that the connection target water pipe 1 (2) is connected to the installation place such that the socket part 5 and the spigot 6 are sequentially (Step a1). Then, the socket part 5 and the spigot 6 of the water supply pipe 1 (2) are cleaned (step b1) The packing 17 is brought into contact with the end of the spigot 6 and then the packing inserting portion 18 of the predetermined length extending to one side of the packing 17 is inserted into the spigot 6, A plurality of fastening bolts 8 for fastening the fastening portions 8a to the socket portions 5 are formed in the through holes of the rollers 10 10a of the fastening bolts 8 and then fastened to the fastening nuts 9 and the fixing nuts 9 fastened thereto are selected so as to be equally spaced and then fastened to the threaded portions 8b of the fastening bolts 8 by long nuts 24 ) To 1/4 to 1/4 (step e1) The front end thread portion 25a of the tongue bolt 25 is fastened to the long nut 24 and the rear end thread portion 25a of the tongue bolt 25 is inserted into the long hole 20a of the support band 20 The support band 20 is fixed to the outer periphery of the spigot 6 near the next rolling 10 in step g1 and the rear end thread 25b of the tongue bolt 25 inserted into the elongated hole 20a of the support band 20, And the packing 17 is tightly coupled between the socket 5 and the spigot 6 in step h1. When the packing 17 is completely tightened, the fixing nut 9 is tightened, And the long nut 24 are tightened so that the pressure ring 10 moves and presses the rubber ring 7 to completely seal the socket portion 5 and the spigot 6 in the step i1 and the water pipe 1, Is completed.

The support band 20 and the tongue bolts 25 and the nuts 24 and 26 may be removed or maintained as they are so that the connection state of the water pipe 1 and 2 is firmly maintained.

The packing insertion portion 18 is coupled to the outer circumference of the spigot 6 at a predetermined length to prevent the packing 17 from flowing or being displaced. 16 and the end portion of the packing insertion portion 18 is brought into close contact with the outer circumference of the water supply pipe 2 such as the spout 6 so as to form an outer end portion of the spout 6, Thereby preventing foreign matter or the like from entering (entering) into the constant 14.

The O-ring 16 is pre-fitted in the packing packing inserting portion 18 in such a manner that the pressure ring 10, the rubber ring 7 (KP rubber ring) and the O-ring 16 are successively fitted to the outer periphery of the spigot 6 in the step c1, Or in the step d1 the packing inserting portion 18 is coupled to the outer circumference of the spigot 6 and then the packing inserting portion 18 is inserted into the outer peripheral edge of the packing inserting portion 18 with the O- Can be configured to be pressurized.

Only 1/5 to 1/4 of the length of the long nut 24 is inserted into the threaded portion 8b of the fixed bolt 8 selected to be equidistantly or equidistantly close to each other, The tip end thread portion 25a of the tongue bolt 25 is fastened by about 1/2 to 1/3 even if the tongue bolt 25 advances in the direction of the roller 10 so that the tongue bolt 25 is prevented from being separated.

The fastening length of the long nut 24 is 1/5 to 1/4 in consideration of the full fastening length. If the length of the long nut 24 is long, the fastening degree of the long nut 24 may be longer.

When the long nut 24 is completely tightened with the tip thread 25a of the tongue bolt 25 fastened to the long nut 24 fastened to the fixing bolt 8, only the long nut 24 is fastened So that the tongue bolt 25 can be relaxed (loosened) or prevented from flowing.

Example 3

In the third embodiment of the present invention, when the number of the through holes 10a formed in the roller 10 and the number of the fixing bolts 8 inserted respectively in the through holes 10a are 24, for example, the sixth fixing bolt 8 The twelfth fixing bolt 8, the 18th fixing bolt 8 and the 24th fixing bolt 8 are constituted by elongated elongated bolts 27 so that the threaded portion 27a is inserted into the supporting band 20, For example, the first to fifth fixing bolts 8, the seventh to eleventh fixing bolts 8, the 13th to 17th fixing bolts 8, and the other fixing bolts 8, The fixing bolt 8 and the elongated bolt 27 are inserted into the through hole 10a of the roller 10 and then the general fixing nut 9 is tightened and the screw portion of the elongated bolt 27 27b are inserted into the elongated holes 20a of the support band 20 fixed to the spigot 6 and then fastened by the pulling nuts 26 so that the four long bolts 27 are inserted into the socket portions 2 of the water pipes 1, (5) and the spigot (6) so that the packing (17) positioned therebetween is made uniform And in this state, the fixing nut 9 fastened to the fixing bolt 8 and the long bolt 27 is fully tightened so that the pressure roller 10 moves and presses the rubber ring 7, The connection of the water pipes 1 and 2 is completed and the packing 17 and the spigot 6 are completely sealed to complete the connection of the water pipes 1 and 2. The packing 17 and the gap 17 The harmful foreign substances such as paint powder and rust generated in the outer surface of the spout 6 and the sockets 5 and the side surfaces 6a of the spout 6 do not flow into the water channel 3 Contamination of the constant 14 is prevented.

As shown in Figs. 30 to 37, the connection method of the third embodiment of the present invention is such that the connection target water pipe (1) (2) is connected to the installation place such that the socket part (5) (Step a2). Then, the socket part 5 and the spigot 6 of the water supply pipe 1 (2) are cleaned (step b2) The packing 17 is brought into contact with the end of the spigot 6 and then the packing inserting portion 18 of a predetermined length extending to one side of the packing 17 is inserted into the spigot 6, A plurality of fastening bolts 8 for fastening the fastening portions 8a to the socket portions 5 are inserted into the through holes of the rollers 10 The hook portion 27a is caught in the socket portion 5 in the through hole 10a of the rolled surface 10 selected to be close to the equal interval or equal interval and the length After inserting the long multiple bolts 27 The threaded portion 27b of the elongated bolt 27 is inserted into the elongated hole 20a of the support band 20 and then the threaded portion 6b of the threaded portion 6, And the pulling nut 28 is fastened to the threaded portion 27a of the elongated bolt 27 inserted into the elongated hole 20a of the support band 20 to thereby form the socket portion 5, The packing 17 is tightly coupled between the fastening bolts 8 and the sprockets 6 in step g2 and the fastening nut 9 fastened to the fastening bolt 8 and the long bolt 27 is tightened when the tightening of the packing 17 is completed The connection of the water pipe 1 (2) is completed by completely sealing the socket portion 5 and the spout 6 while the pressure roller 10 moves and presses the rubber ring 7 (Step h2).

The support band 20 and the pulling nut 28 may be removed or maintained as they are, so that the connection state of the water supply pipe 1 and the water supply pipe 2 is firmly maintained.

The packing inserting portion 18 is coupled to the outer periphery of the packing 6 at a predetermined length to prevent the packing 17 from flowing or being displaced. 16 and the end portion of the packing insertion portion 18 is brought into close contact with the outer circumference of the water supply pipe 2 such as the spout 6 so as to form an outer end portion of the spout 6, Thereby preventing foreign matter or the like from entering (entering) into the constant 14.

The o-ring 16 is pre-fitted in the packing packing inserting portion 18 in such a manner that the pressure ring 10, the rubber ring 7 (KP rubber ring) and the O-ring 16 are successively fitted to the outer periphery of the spigot 6 in Step c2. Or the packing inserting portion 18 is coupled to the outer periphery of the spigot 6 in Step d2 and then the packing inserting portion 18 is inserted into the outer peripheral edge of the packing inserting portion 18 with the O- Can be configured to be pressurized.

The connection structure of the water pipe (water pipe) illustrated in the present invention is as follows.

4 and 5, the pressure ring 10, the rubber ring 7 and the O-ring 16 are successively inserted into the outer periphery of the spigot 6 of the water supply pipe 2, and then the packing 17 And a packing inserting portion 18 extending to one side of the packing 17 is tightly engaged with the end of the inserting mouth 6 so that the side face 6a of the inserting mouth 6 And then the O-ring 16 is pressed on the upper surface of the end of the packing insert portion 18 as shown in FIGS. 15 and 22 so as to press the outer end of the spout 6 and the outer surface of the shaft 6 side Which is generated from the oil paint 6a, is hardly generated. However, even if it occurs, the oil does not flow out and the contact with the water 14 is essentially blocked, so that the water 14 is prevented from being contaminated.

The packing 17, the packing insert 18 and the O-ring 16 are rubbery, soft and hygienic synthetic resin.

The width w and the thickness and length of the packing 17 vary depending on the diameter (or the inner diameter or the outer diameter) of the water pipe, but the width w is 10 to 200 mm and the thickness t is the width w. And the length of the packing insertion portion 18 is preferably such a length as not to make contact with the rubber ring 7.

The packing 17 of the present invention is a flange-like packing that surrounds the side surface 6a and the outer periphery of the spigot 6 by an extending packing insertion portion 18. [

The packing 17 surrounds the side surface 6a of the spigot 6 and the packing insertion portion 18 covers the outer circumferential edge of the end portion of the spigot 6 and covers (covers) The foreign matter such as paint or lunar rust is hardly generated in the outer surface of the spigot 6 and the side 6a of the spout 6 coated with the general paint, And even if a small amount of these foreign substances are generated, it does not flow into the water line 3 (4), and the contamination of the constant water 14 is prevented.

As shown in FIG. 20, when the water pipes 1 and 2 are connected to each other, they are not connected substantially straightly depending on the installation place and the installation environment. When the connection angle? °, the sealing of the packing 17 can not be achieved.

Therefore, in the present invention, as shown in Fig. 21, by forming the inclined packing 17a having a width W2 that gradually increases as the packing moves to the upper or one side of the packing, When the connection angle [theta] 3 is large, stubborn packing 17a is used to achieve stubborn watertightness.

In the present invention, the O-ring 16 is moved to the upper end surface of the end portion of the packing-inserting portion 18 which is previously fitted on the outer periphery of the spigot 6 as shown in Fig. 8 and presses the end portion of the packing-inserting portion 18, The side edge 6a of the spigot 6 is joined with the packing 17 and the packing insertion portion 18 at the outer periphery and then the O-ring 16 is inserted to press the end portion of the packing insertion portion 18 as shown in Fig. have.

A slanting projection 18a is formed on the upper surface of the end of the packing insert 18 as shown in FIG. 19 in place of the O-ring 16, but the slanting surface 5a formed in the socket 5 is larger than the inclination angle? A slanting projection 18a having an inclination angle θ2 of 3 to 10 ° greater than the inclination angle θ1 of the inclination plane 5a is formed to connect the water supply pipe 1 or 2 A strong pressing force is applied to the end portion of the packing inserting portion 18 due to the pressing action of the inclined face 5a as shown in FIG. Even if paint powder or lime is generated in the side surface 6a of the spout 6 and the packing 17 and the packing insertion portion 18 while the contact with the constant water 14 is essentially blocked, Pollution is prevented.

That is, in the present invention, the packing 17 is pressed against the coupling step 5b of the socket part 5 and the side face 6a of the spigot 6, and the end of the packing insertion part 18 is in contact with the O- Since the inflow of the constant water 14 is prevented after the construction of the piping, the rust and the like are not generated. However, the paint powder, the rust and the like generated before and after the piping construction are prevented from being damaged by the packing 17 and the packing inserting portion 18a. (18) and the spigot (6), and the contact with the constant (14) is essentially blocked.

A plurality of pieces of the support band 20 having the elongated holes 20a formed in the supporting portion 20b of the predetermined height are fixed to the outer circumferential surface of the water pipe 2 close to the roller 10 with the fastening means 30 , The spigot 6 of the water supply pipe 2 to which the packing 17 is coupled is coupled to the socket portion 5 of the water supply pipe 1 so that the side surface of the packing 17 is brought into close contact with the engagement step 5b The threaded portion 8a of the fixing bolt 8 is engaged with the locking projection 5c of the socket portion 5 as shown in Fig. 11, and the threaded portion 8b of the fixing bolt 8 is engaged with the through- And then fastened to the fixing nut 9.

The end of the fixing bolt 8 is constituted by a pulling means such as a tongue bolt 22 or 25 having a long length so as to be installed in the support band 20 or a long bolt 27, And then pulled and pulled by the pulling nuts 23, 26 and 28 attached to the support band 20 provided on the outer periphery of the spigot 6 near the socket 5 and the spigot 6 And the rubber ring 7 is moved and pressed by the pressure roller 10 so that the rubber ring 7 is pressed against the socket part 5 and the rubber ring 7 is pressed and tightened, The connection of the water pipe 1 (2) is completed while the water pipe 6 is completely sealed and the watertightness is stubbornly achieved.

2 to 10 can be used so that the connection state between the water supply pipe 1 and the water supply pipe 2 can be maintained although the pulling means depends on the diameter (or inner diameter or outer diameter) of the water supply pipes 1 and 2. [ have. The fixing bolt 8 and the fixing nut 9 for fixing the pressure roller 10 and the fixing nut 9 are used before and after 20 water pipes 1 and 2 with a diameter of 1,100 mm, The connection between the water supply pipe 1 and the water supply pipe 2 is maintained and the packing 17 is uniformly pressurized by the uniform pressure.

In the present invention, the supporting band 20 is separated into four pieces in the case of a water pipe having a diameter of 1,100 mm. However, the supporting band 20 is divided into two to ten pieces depending on the diameter (or inner diameter or outer diameter) .

The support band 20 is composed of two to ten pieces having a radius of curvature equal to the outer diameter of the water pipe 1 or 2 to be applied and a support portion 20 The support portion 20b is formed with a long hole 20a to which the tongue bolts 22 and 25 as the pulling means or the long bolt 27 are coupled.

As shown in FIGS. 17, 29, and 37, the support bands 20 are formed at both side ends of the support band 20 with outward protrusions 31 and 32 formed with at least two or more bolt insertion holes. A bolt 33 as a fastening means 30 is inserted into a bolt insertion hole of a neighboring outward protruding portion 31 and 32 and then fastened with a nut 34 to form a water pipe 26 and 34 as shown in Figs. 13, 26 and 34 after the tongue bolts 22 and 25 or the elongated bolts 27 are coupled to each other, .

A spacing space 35 may be formed between the support band 20 and the support band 20 so as to be tightly fastened to the fastening means 30.

The height of the elongated hole 20a of the support band 20 is such that the pulling means can be well combined.

The present invention is characterized in that a packing 17 of a soft and tough nature is attached to a side 6a of a spout 6 of a water supply pipe and a packing insertion portion 18 is protruded to one side of the packing 17, So that the packing 17 is prevented from flowing or being displaced by covering the periphery of the socket 17 and the packing 17 so that the packing 17 is fixed to the spigot 6 so that when the water supply pipe 1 is connected, Tight sealing between the spigots 6 is achieved.

The present invention is also characterized in that a support band (20) provided on the outer periphery of the spigot (6) near the roll (10) when the socket portion (5) of the water supply pipe (1) The packing 17 and the spigot 6 are brought into tight contact with each other using the elongated tongue bolts 22 or 25 or the elongated bolts 27. The fastening nut 9 The pipe 10 of the water supply pipe 1 or 2 is completed by causing the pressure roller 10 to press the rubber ring 7.

The support band 20 and the pull bolt 21 or the tongue bolt may be removed when the connection of the water supply pipe 1 or 2 is completed. By not removing the bolt, the pulling force (or the coupling force) is maintained and the solidly connected state of the water pipe (1) (2) is maintained.

The present invention relates to an outer surface end portion of a spigot 6 and a side surface 6a of a spigot 6 which are coated with a general oil paint and are located inside the rubber ring 7 and can contact with the constant 14, The gap 15 is not generated in the outer edge of the spigot 6 and the side surface 6a of the spigot 6 so that foreign substances such as paint powder and rust can flow into the water conduit 3 So that contamination of the constant 14 is prevented.

The upper end surface of the packing inserting portion 18 is pressurized by the O-ring 16 as shown in Fig. 22 so that the foreign matter generated from the outer surface of the spout 6 and the side surface 6a of the spout 6 can reach the packing 17 and / It is prevented from flowing out to the outside of the packing insertion portion 18, whereby contact with the constant water 14 is essentially blocked to prevent the water 14 from being contaminated.

23, an inclined protrusion 18a is formed on the upper end surface of the packing inserting portion 18 so as to be pressed by the inclined surface 5a of the socket portion 5, Whereby the paint powder and the green liquor generated at the outer surface of the spigot 6 painted with the oil paint and the side surface 6a of the spigot 6 are discharged out of the packing 17 and the packing inserting portion 18 So that the contact with the constant 14 is essentially blocked and the contamination of the constant 14 is prevented.

In the present invention, when it is desired to check the connection state after connecting the water pipes 1 and 2, it is relatively easy to observe when the inside diameter of the water pipe 1 or 2 is large. If the inner diameter is small, put the smart phone bundled in the stick into the connection part of the water pipe (1) (2), capture and store the image using the camera function of the smartphone or the photo and / or movie shooting function, It can be confirmed during playback, or it can be implemented so that real-time moving pictures or photos can be viewed on other smartphones in the field using the Bluetooth function of the smartphone. Of course, it can also be implemented so that it can be used to check real-time moving pictures or photos by using a communication network or other smart phones in the field.

In the present invention, the fixing bolt 8, the pulling means, and the pulling nuts 23, 26, and 28 are configured to have the same outer diameter so that they can be fastened or loosened with a spanner, a large etch wrench, It is preferable to increase the working efficiency.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, It is self-evident to those of ordinary skill.

(1) (2) - Water pipe (3) (4) - Water pipe
(5) - Socket section (5a) - Socket inclined surface
(5b) - coupling step 5c -
(6) - sprouts (6a) - sprouts side
(7) - Rubber ring (8) - Fixing bolt
(8a) (27a) - Hanger (8b) (27b) - Thread
(9) - Fixing nut (10) - Reduction
(11) - Interior Finishing Material (12) - External Finishing Material
(13) - Foreign matter (14) - Constant
(15) - Gap (16) - O-ring
(17) - packing (17a) - inclined packing
(18) - packing insertion portion (18a) - inclined projection
(20) - Support band (20a) - Slot of support band
(20b) - support part (21) of the support band - connection nut
(22) (25) - Tongue bolt (22a) (25a) - Tip thread
(22b) (25b) - rear end thread portion (23) (26) (28) - pulling nut
(24) - long nut (27) - long bolt
(30) - fastening means (31) (32) - outward projection
(33) - Bolt (34) - Nut
(35) - Spacing (0) - Spacing
(W1) (W2) - width (? 1) (? 2) - inclination angle
(? 3) - Connection angle

Claims (9)

a) listing the connected water pipe at the installation site;
b) cleaning the sockets and spouts of the water line;
c) placing the pressure ring and the rubber ring in turn on the outer periphery of the spigot;
d) contacting the packing at the end of the spigot, and then connecting the packing-inserting portion of a predetermined length extending to one side of the packing to the outer periphery of the spigot to prevent flow and deviation of the packing;
e) inserting a plurality of fixing bolts, which are hooked on the socket portion, into the through holes of the pressure ring, and then fusing the fixing bolts with a fixing nut;
f) tightening the connecting nut 1/2 ~ 1/3 to the threaded portion of the fixing bolt selected equidistantly among the fixing bolts fastened to the fixing bolts;
g) fastening the tip thread of the tongue bolt to the connecting nut;
h) fixing the support band to the outer periphery of the water pipe close to the pressure ring after inserting the rear end thread of the tongue bolt into the slot of the support band;
i) tightening the pulling nut on the rear end thread portion of the tongue bolt inserted into the elongated hole of the support band to tightly couple the packing between the socket portion and the shovel;
j) to tightly fasten the socket and the spigot while the pressure ring moves and presses the rubber ring;
And a water pipe connection method including the water pipe connection method. a1) arranging a plurality of water pipe lines at installation sites;
b1) cleaning the socket portion and the spigot of the water supply pipe;
c1) sandwiching the pressure ring and the rubber ring on the outer periphery of the spigot;
d1) contacting the packing at the end of the spigot, and then connecting a packing-inserting portion of a predetermined length extending to one side of the packing to the outer periphery of the spigot to prevent flow and deviation of the packing;
e1) After inserting a plurality of fixing bolts, which are hooked on the socket part, into the through holes of the pressure ring, tighten them with a fixing nut, and insert 1/5 to 1/4 step;
f1) fastening the tip thread of the tongue bolt to the long nut;
g1) fixing the support band to the outer circumference of the water pipe near the pressure ring after inserting the rear end thread of the tongue bolt into the slot of the support band;
h1) tightening the pulling nut to the rear end thread portion of the tongue bolt inserted into the slot of the support band to tightly adhere the packing between the socket portion and the shovel;
i1) is tightened with a fastening nut to fasten the socket and the fastener while the roller moves and presses the rubber ring;
And a water pipe connection method including the water pipe connection method. a2) listing the connection target water pipe at the installation site;
b2) cleaning the socket portion and the spigot of the water supply pipe;
c2) sandwiching the pressure ring and the rubber ring on the outer periphery of the spigot;
d2) connecting the packing to the end of the spigot, and then connecting the packing insert to the outer periphery of the spigot by extending to one side of the packing to prevent the flow and deviation of the packing;
e2) After inserting a plurality of fixing bolts, which are hooked on the socket part, into the through holes of the pressure ring, then tightening with a fixing nut, hooking part is hooked on the socket part and long length bolts are inserted into the through holes of the pressure wheel selected equidistantly Coalescing with a fixing nut;
f2) fixing the support band to the outer periphery of the water pipe close to the pressure ring after inserting the screw portion of the long bolt into the slot of the support band;
g2) tightening the pulling nut on the threaded portion of the elongated bolt inserted into the elongated hole of the support band to tightly connect the packing between the socket portion and the shovel;
h2) tightening a fixing nut fastened to the fastening bolt and the long bolt to completely close the socket portion and the fastening portion while the rolling ring moves and presses the rubber ring;
And a water pipe connection method including the water pipe connection method. The method according to any one of claims 1 to 3,
The packing is brought into contact with the end of the spigot and then a packing inserting portion of a predetermined length extending to one side of the packing is coupled to the outer periphery of the spigot to prevent the flow and deviation of the packing, Adhering an end portion of the insertion portion to the outer periphery of the spigot;
Wherein the water pipe connection method further comprises: A rubber ring 7 which is coupled between the socket portion 5 of the water supply pipe and the spigot 6 and is pressed and supported by the pressure roller 10;
A plurality of fixing bolts 8 that are engaged with the through holes 10a of the pressure roll 10 and then are fastened by the fixing nuts 9 to support the pressure rolls 10, );
, ≪ / RTI &
A packing 17 adhered between the socket portion 5 of the water supply pipe and the spigot 6;
A packing insertion portion 18 extending to one side of the packing 17 and coupled to the outer periphery of the spigot 6;
An O-ring 16 for pressing and supporting the upper end surface of the packing insertion portion 18;
A connecting nut 21 fastened to the threaded portion 8a of the fixed bolt 8 selected at even intervals;
A tip threaded portion 22a of the tongue bolt 22 to be fastened to the connecting nut;
A support band (20) fixed to the outer periphery of the spigot (6) by fastening means;
An elongated hole 20a of the support band 20 to which the rear end thread portion 22b of the tongue bolt 22 is engaged;
A pulling nut 23 which is fastened to the rear end thread portion 22b of the tongue bolt 22 inserted into the elongated hole 20a of the support band 20;
The water pipe connection structure further comprising: A rubber ring 7 which is coupled between the socket portion 5 of the water supply pipe and the spigot 6 and is pressed and supported by the pressure roller 10;
A plurality of fixing bolts 8 that are engaged with the through holes 10a of the pressure roll 10 and then are fastened by the fixing nuts 9 to support the pressure rolls 10, );
, ≪ / RTI &
A packing 17 adhered between the socket portion 5 of the water supply pipe and the spigot 6;
A packing insertion portion 18 extending to one side of the packing 17 and coupled to the outer periphery of the spigot 6;
An O-ring 16 for pressing and supporting the upper end surface of the packing insertion portion 18;
A long nut 24 fastened to the threaded portion 8b of the fixed bolt 8 selected at even intervals;
A tip threaded portion 25a of the tongue bolt 25 to be fastened to the long nut 24;
A support band (20) fixed to the outer periphery of the spigot (6) by fastening means;
An elongated hole 20a of the support band 20 to which the rear end thread portion 25a of the tongue bolt 25 is engaged;
A pulling nut 26 fastened to the rear end thread portion 25b of the tongue bolt 25 inserted into the slot 20a of the support band 20;
The water pipe connection structure further comprising: A rubber ring 7 which is coupled between the socket portion 5 of the water supply pipe and the spigot 6 and is pressed and supported by the pressure roller 10;
A plurality of fixing bolts 8 that are engaged with the through holes 10a of the pressure roll 10 and then are fastened by the fixing nuts 9 to support the pressure rolls 10, );
, ≪ / RTI &
A packing 17 adhered between the socket portion 5 of the water supply pipe and the spigot 6;
A packing insertion portion 18 extending to one side of the packing 17 and coupled to the outer periphery of the spigot 6;
An O-ring 16 for pressing and supporting the upper end surface of the packing insertion portion 18;
An elongated bolt 27 which is fitted in the through hole 10a of the equal pitch 10 and engages with the socket portion 5 with the hook portion 27a and is fastened by the fixing nut 9;
A threaded portion 27b of the elongated bolt 27 which is engaged with the elongated hole 20a of the support band 20;
A support band (20) fixed to the outer periphery of the spigot (6) by fastening means;
A pulling nut 28 fastened to the threaded portion 27a of the elongated bolt 27 fitted in the slot 20a of the support band 20;
And a water pipe connection structure including the water pipe. The method according to any one of claims 5 to 7,
The inclination angle? 2 of the inclined protrusion 18a is set to be larger than the inclination angle of the inclined surface 5a formed in the socket portion 5, And the slope is 3 to 10 degrees larger than the angle (? 1). The method according to any one of claims 5 to 7,
And the packing (17) is an inclined packing (17a).

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