KR100216082B1 - Drainage pipe assembly - Google Patents

Abstract

Disclosed is an improved drain pipe assembly capable of adjusting according to the positional deviation of the upper / lower drain port and preventing back flow of the foam. A drain hole 103 is formed in the concrete 300 so that the upper and lower surfaces of the drain hole 103 are exposed. The drain hole 103 communicates with the drain hole 103 at one side thereof. A drain hole 100 in which a coupling groove 107 to which the coupling hole 310 is coupled is formed and a part of the drain hole 100 is embedded in the concrete 300 and the coupling hole 102 is connected to the coupling hole 102 by a predetermined connection means. A drainage tank 200 having a drainage hole 202 and an opening at one end and closing the other end to form a receiving space 203 in a predetermined space; The left and right adjusting members 130 and 230 having the eccentric holes 131 and 231 smaller than the inlet of the drain hole 103 and the receiving portion 203 and the eccentric holes 131 and 231, A cover plate 141 for blocking the exposure of the eccentric holes 131 and 231 and a cover plate 141 for covering the discharge holes 103, Tube and the upper drain connection pipe 320 is coupled the upper engaging portion 142, and a drain connected in communication with the drain tank 200, the ball 143 is provided with a closure member 140, which is formed.

Description

Drain pipe assembly

The present invention relates to a drain pipe assembly for drainage of veranda or rooftop rainwater or sewage, and more particularly to an improved drain pipe assembly for facilitating correction due to erroneous construction and effectively preventing noise and odor.

Generally, in a multi-story building bathroom or veranda is provided with a drain pipe assembly through which high water is discharged and upper and lower connection pipes are connected.

An example of such a drain pipe assembly is disclosed in Utility Model Publication No. 81-2524, and is shown in FIG. This is because the trap body 10 is fixed to the formwork with the nails 14 before the concrete 1 is crashed in the formwork (not shown) and the hopper 20 is joined to the trap body 10, 1 are installed by being installed. After the concrete 1 is cured, the netting 4 is connected to the hopper 20 and the upper connecting pipe 30 is seated on the upper end thereof and fixed by the fixed ring 2. Then, And the lower connection pipe 40 is engaged with the coupling groove 12.

On the other hand, a plurality of ribs 13 are formed on the upper inner circumferential surface of the trap body 10 so that a predetermined space is formed between the outer circumferential surface of the hopper 20 and the outer circumferential surface. Therefore, water leaking through the outer circumferential surface of the hopper 20 from the upper surface of the concrete 1 is drained through the space. An inclined portion 11a is formed at the edge of the flange 11 of the trap body 10 so that the trap body 10 is not separated from the concrete after the form is removed.

However, the drain pipe assembly described above has the following problems.

First, since the upper connection pipe 30 is simply mounted on the upper end of the net 40, there is a risk of water leakage, and the height adjustment allowable length of the upper connection pipe 30 is limited to the width of the fixed ring 2, There is a limit. In addition, there is a problem in that when the position of the drain port of the upper / lower layer is deviated to the left or right, it is difficult to adjust the left / right connection pipe.

Secondly, there is a problem that odor is generated by flowing backward through the net body 40, and noise due to free fall of water to be drained also occurs.

Third, when the hopper 20 is coupled with the trap body 10, a gap is generated due to the rib 13, so that when the concrete is poured, the concrete is filled with the gap and leaks through the outer peripheral surface of the hopper 20 There is a problem that water is discharged as it is if it is concrete (the lower ceiling).

Fourthly, the hopper 20 is fixedly installed in the concrete 1 so that when the joint between the tiles is wrong, the tile should be cut and attached. When the upper end of the hopper 20 and the concrete 1 ), There is a problem that the level must be adjusted by re-casting the concrete.

Fifth, when the concrete 1 is placed in a state where the trap body 10 is fixed to the form, the concrete is buried in the joint groove 12 to which the lower connection pipe 40 is coupled. Therefore, At this time, the trap body 10 may be damaged.

Referring to the drain pipe assembly disclosed in Korean Utility Model Publication No. 96-5423 and shown in FIG. 2, a drain pipe 41 to which the connection pipe 40 is connected and a plurality of guide members 43 and 44 The water drained from the drain tank 42 is drained while forming a vortex along the inner circumferential surface of the drain hole 41 through the canyon portion 47 to reduce the noise .

However, the drain pipe assembly described above has the following problems.

First, there is a problem that the waste water falling through the connection pipe 40 collides with the inner circumferential surface of the drain hole 41, and the drainage tank 42 is permeated through the valley 47. In this case, odor and the like leak out.

Secondly, when the connection port 46 connecting the laundry discharge pipe of the washing machine (not shown) is connected to the filter net 45 as shown in FIGS. 2 and 3, which is coupled to the inlet of the drain tank 42, The laundry is discharged through the inner hole 45a, but the foam or the like flows backward through the outer hole 45b and is discharged, so that it is troublesome to clean the floor with water.

In addition, since the connecting port 46 is fixed to the filtering net 46 in a fixed direction, it is troublesome to separate the connecting port 46 from the filtering net 45 and adjust the connecting direction according to the position of the washing machine.

Third, since the drain hole 41 and the drain tank 42 are integrally connected, it is difficult to manufacture the mold and it is difficult to adjust the drain tank 42 to an arbitrary position. Therefore, considering that the drain hole 41 is installed in the central part of the veranda, it is necessary to work such that the bottom slope is inclined around the drainage tank 42, so that the slope alignment work is troublesome.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and has the following objectives.

First, it is an object of the present invention to provide an improved drain pipe assembly capable of accurately adjusting the deviation even though the position of the drain (drain) is varied between the upper and lower levels.

Second, it is an object of the present invention to provide a drain pipe assembly in which the finish after the installation is clean and there is no fear of putting foreign matter into the interior.

Third, it is an object of the present invention to provide a water pipe assembly which prevents discharge of odor, reduces drainage noise, and prevents backflow of wastewater.

Fourth, it is an object of the present invention to provide a drain pipe assembly that can be adjusted so that the tile can be installed without cutting the tile considering the aesthetics of the tile.

Fifth, it is an object of the present invention to provide a drain pipe assembly capable of adjusting the height even if a difference in level from the concrete placed thereon occurs.

Sixth, it is an object of the present invention to provide an improved drain pipe assembly for easy formation of a waterproofing solution groove.

Seventh, it is an object of the present invention to provide an improved drain pipe assembly that prevents backflow of foam during drainage of laundry.

And a drain pipe assembly in which the position of the drain tank can be arbitrarily adjusted from the position of the eighth drain pipe (drainage port).

1 is a cross-sectional view of a conventional drain pipe assembly,

FIG. 2 is a cross-sectional view of another conventional drain pipe assembly,

FIG. 3 is a plan view of the filter network employed in FIG. 2,

FIG. 4 is an exploded perspective view of the water pipe assembly of the present invention,

FIG. 5 is an exploded perspective view showing the water pipe assembly of the present invention at the time of construction,

FIG. 6 is a sectional view of the water pipe assembly of the present invention after construction,

7 and 8 are cross-sectional views of another embodiment of the present invention drain pipe assembly,

FIG. 9 is an exploded perspective view showing a backflow prevention zone adopted in the present invention,

FIG. 10 is a schematic diagram for explaining the deviation adjustment of the present invention;

FIG. 11 is a perspective view showing a part of the backflow prevention means of the present invention. FIG.

DESCRIPTION OF THE REFERENCE NUMERALS

100: Drain 110: Hopper

120, 130: auxiliary ring member 130, 230: left and right adjusting member

140: closing member 150: upper and lower adjusting member

200: drainage tank 250:

300: concrete 400: waterproofing liquid groove forming member

500: cover member 600: connector

According to an aspect of the present invention, there is provided a drain pipe assembly for partially draining a waste water from a floor, the drain pipe being connected to an upper / lower drain connection pipe, A drain port formed with a drain hole and formed with a connection hole communicating with the drain hole at one end thereof and having a coupling groove into which the lower drain connection pipe is coupled at one end, A drain pipe formed with a drain hole formed by a connecting pipe having a length and communicating with the bottom and the other end being closed to form a receiving space in a predetermined space; A left and right adjusting member formed with an eccentric hole smaller than an inlet of the drain hole and the accommodating portion; And upper and lower adjusting members each having a screw portion coupled to the threaded portion of the upper coupling portion and having a supporting jaw to which the upper drain connecting pipe is coupled and supported, A cover plate for blocking exposure of the eccentric holes; an upper coupling portion communicating with the drain hole and coupled with the upper drain connection pipe; and a drain member connected to the drain tank, A waterproofing liquid groove forming member for forming a waterproofing liquid groove on the upper edge of the drain hole and the drain tank, a filter net having a plurality of holes coupled to the drain connection hole, A connecting member communicably connected to a part of the filter net and connected to the washing water discharge pipe of the washing machine, Of the foam is characterized in that the by having a bubble blocking means for preventing the reverse flow to the filtering net outward.

According to the features of the present invention, the drain pipe assembly of the present invention can separate and install the drain hole and the drain tank, so that the drain pipe assembly can be installed at any position irrespective of the installation location of the drain tank and prevents leakage of odor and noise due to the hopper , And when the position of the drain port is different between the upper and lower layers, it is possible to adjust and enable accurate construction. In addition, when the connection with the washing machine is used, the backflow of the foam is prevented.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIG. 6, which is a sectional view of the drain pipe assembly according to the present invention, the drain pipe assembly according to the present invention is installed in the concrete 300 so as to expose the upper and lower surfaces thereof, A drain hole 100 formed at one side thereof with a connection hole 102 communicating with the drain hole 103 and formed with a coupling groove 107 at one end to which the lower drain connection pipe 310 is coupled, A part of the concrete is buried in the concrete 300 and a discharge hole 202 connected to the connection hole 102 by a predetermined connecting means is formed at one side thereof and the other end is closed and the other end is closed A drainage tank 200 forming a drainage unit 203 and a drainage tank 200 connected to the upper ends of the drainage unit 100 and the drainage tank 200, Left and right adjusting members 130 and 230 formed with smaller eccentric holes 131 and 231, A cover plate 141 for blocking the exposure of the eccentric holes 131 and 231 and a cover plate 141 for blocking the exposure of the eccentric holes 131 and 231, And a closure member 140 having an upper coupling portion 142 to which the upper drain connection pipe 320 is connected and a drain connection hole 143 communicating with the drainage tank 200 are formed.

As shown in FIG. 10, the closing member 140 is movable left and right while being coupled to the left and right adjusting members 130 and 230.

The connection unit connects the connection hole 102 with the exhaust hole 202 through a connection pipe 600 having a predetermined length. In this case, as shown in FIG. 7, the drain tank 200 may be spaced apart from the drain 100 by a considerable distance using a long connection pipe 601, and may be installed at an arbitrary position.

A threaded portion 142a is formed on the inner circumferential surface of the upper coupling portion 142 and a threaded portion 152 coupled to the threaded portion 142a of the upper coupling portion 142 is formed, And a vertical adjustment member 150 having a support jaw 153 to be coupled and supported is provided.

An adjustment unit 151 is provided on the outer circumference of the upper and lower adjustment member 150 to adjust the rotation of the upper and lower adjustment member 150 by an operator. Even if the length of the upper drain connection pipe 320 is short, it is possible to overcome the difference in length by vertically adjusting the up and down adjusting member 150.

The hopper 110 is coupled to the inner circumferential surface of the drain hole 100 by a predetermined distance from the inner circumferential surface of the drain hole 100. A waste water falling from the upper drain connection pipe 320 is guided on the inner circumferential surface of the hopper 110, A predetermined number of blades 111 are formed at predetermined angles. The waste water falling from the upper drainage connection pipe 320 is guided by the blade 111 to be dropped while forming a vortex, and the wastewater discharged from the drainage tank 200 through the discharge hole 202 flows into the hopper Collides with the outer circumferential surface of the drum 110 and is discharged while being rotated. At this time, the waste water falling through the upper drainage connection pipe 320 is not introduced into the drainage tank 200 by the hopper 110, and the odor and noise of the drainage water are leaked through the drainage tank 200 Minimize it.

8, a sub-connection hole 108 is formed at one side of the drain hole 100 to communicate with the drain hole 103. In this case, the drain hole 200 and the sub- In addition, another drain can be installed. Further, an elbow (not shown) bent at a predetermined angle may be further coupled to the sub connection hole 108 at one end thereof. In this case, the angle adjustment becomes easy.

The auxiliary ring members 120 and 220 may be installed on the upper ends of the drain hole 100 and the drain hole 200, respectively. In this case, errors due to the difference between the height of the upper and lower layers and the length of the upper drain connection pipe 320 can be overcome.

A plurality of guide ribs 104 and 204 are formed at the upper end of the drain hole 100 and the drain hole 200 at predetermined intervals and separated flaws 105 and 105 are formed between the guide ribs 104 and 204, ) 205 are formed. The auxiliary ring members 120 and 220 are formed with engaging portions 122 and 222 that are coupled to the inside of the respective guide ribs 104 and 204 and are fixed to the respective guide ribs 104 and 204 Support ribs 121 and 221 are formed and a plurality of guide ribs 123 and 223 are formed at an upper end at predetermined intervals.

When the auxiliary ring members 120 and 220 are employed, the left and right adjusting members 130 and 230 are engaged with the guide ribs 123 and 223 of the auxiliary ring members 120 and 220, respectively. The separating grooves 105 and 205 of the drain port 100 and the drain tank 200 are grooves into which the extraction tool is inserted when the auxiliary ring members 120 and 220 are taken out.

5 and 6, a waterproofing liquid groove forming member 400 for forming a waterproofing liquid groove 301 is coupled to the upper edge of the drain hole 100 and the drain tank 200. As shown in FIG.

The waterproofing liquid groove forming member 400 includes an annular ring 410 coupled to upper ends of the drain 100 and the drain 200 and a plurality of connecting pieces 411 extending from the ring 410 And covers 420 and 421 for blocking the entrance of the drain hole 100 and the drain hole 200, respectively. A plurality of blocking ribs 101 and 201 are formed on the outer circumferences of the drain port 100 and the drain tank 200 so as to face the annular portion 410, respectively. In this case, the waterproofing liquid 302 filled in the waterproofing liquid groove 301 is effectively prevented from penetrating into the lower portion of the concrete 300 by the blocking ribs 101 and 201.

The cover member 500 is coupled to the coupling groove 107 of the drain hole 100 to prevent the concrete 300 from being filled into the drain hole 103 and the coupling groove 107 when the concrete 300 is pushed . In this case, after completion of curing of the concrete 300, the finish is smoothed when the form is removed.

Referring to FIGS. 4, 6, 9 and 11, a drainage connection hole 143 of the closure member 140 is coupled with a filtering net 250 having a plurality of holes 251 formed therein And a coupling member 700 coupled to a portion of the hole 251 is coupled to the filter network 250. In this case, the connection member 700 may be connected to a washing water discharge pipe of a washing machine (not shown).

The connection part 700 includes a fixing pipe 710 having a locking part 711 to be coupled to a coupling hole 252 of the first filtering net 250 and a fixing part 710 having a first end rotatably coupled to the fixing pipe 710, And the other end is connected to the washing water discharge pipe. The connection pipe 720 is preferably formed of a flexible synthetic resin material that is elastically deformable. In this case, it is possible to adjust the direction by rotating the connection pipe 720 while the fixing pipe 710 is coupled to the filtering net 250 according to the position of the washing machine, and if the user accidentally presses the connecting member 700 Prevent damage and damage to the body. Also, even if the connecting member 700 is separated when the washing machine is not in use, the filtering net 250 has a plurality of holes 251 on the front surface thereof, thereby maintaining a beautiful appearance.

And foam preventing means for preventing the foam of the washing water from flowing backward to the outside of the filter net 250.

The bubble prevention means is accommodated in the receiving portion 203 of the drain tank 200 and the main tubular body 241, the sub tubular body 242, the sub guide member 243 and the main guide member 244 are sequentially connected .

An outer wall 241a formed at the upper end of the main cylinder 241 and having a supporting protrusion 241c supported at the edge of the drain connection hole 143 and having a plurality of through holes 241d formed on the upper outer periphery thereof, And a main wall 241b extending from the lower end of the outer wall 241a to the four sides of the outer wall 241a so as to be spaced apart from the outer wall 241a by a predetermined distance and communicated at both ends thereof. Therefore, a retaining portion 241e is formed between the outer wall 241a and the main pail wall 241b, which is a space in which waste water or washing water temporarily retreats.

The sub cylinder 242 includes a sub-wall 242d coupled to the inside of the main wall 241b and closed at the lower end thereof and a support wall 242d hung on the upper end of the sub wall 242d and supported by the main wall 241b. And has a tapered surface 242b formed between the supporting step 242a and the sub-wall 242d and formed with a plurality of through holes 242c.

The sub guide member 243 is supported by the sub cylinder 242 at the upper end of the sub guide wall 243d and a sub guide wall 243d which is coupled to the inside of the sub cylinder 242d and communicates with the upper and lower portions of the sub guide member 243 And a seating step 243a whose upper end portion is in close contact with the bottom surface of the filtering net 250 is formed.

The main guide member 244 includes a main guide wall 244b coupled between an outer wall 241a of the main cylinder 241 and the main wall 241b, A supporting rib 244a is formed which is supported on the upper end of the supporting step 241c.

The anti-foaming means as described above has a drainage path for the following wastewater or wash water. A space between the outer circumferential surface of the sub guide wall 243d and the inner circumferential surface of the sub-wall 242d → the through hole of the sub-tubular member 242 242c to the drain tank 200 through the hollow of the main pail wall 241b. The washing water dropped on the drain tank 200 is led to the drain port 100 through the connection 202. The seating jaw 243a of the sub guide member 243 is in close contact with the filtering net 250 and communicates with the fixing tubing 710 to prevent the foam of the laundry from flowing back through another hole of the filtering net 250. [ On the other hand, the main cylinder 241 and the sub cylinder 242 can be integrally formed. In this case, the manufacturing process is simplified.

The drain pipe assembly according to the present invention constructed as described above is constructed as follows. 5, the drainage port 100 and the drainage tank 200 are connected to each other by the connection pipe 600 and the cover member 500 is connected to the coupling groove 1 (7) of the drainage port 100, (Not shown) from the opponent to which they are coupled. At this time, it can be nailed to the formwork through the fixture (106) (206). Then, the waterproofing liquid groove forming member 400 is coupled to the upper end of the drain hole 100 and the drain tank 200.

The concrete 300 is poured and cured, and after the curing, the waterproofing liquid groove forming member 400 and the mold and the cover member 500 are removed. At this time, a waterproofing liquid groove 301 as shown in FIG. 6 to FIG. 8 is formed. Meanwhile, during the curing process, foreign matter is prevented from penetrating into the header drainage port 100 and the drainage tank 200 of the cover 420, 421 of the waterproofing solution groove forming member 400. Then, the waterproofing liquid groove (301) is filled with the waterproofing liquid (302). At this time, the waterproofing liquid 302 is effectively prevented from leaking by the blocking ribs 101 and 201.

Here, the auxiliary ring members 120 and 220 may be further combined in consideration of the level difference between the upper and lower layers of the concrete 300.

The right and left adjusting members 130 and 230 are seated on the upper ends of the drain port 100 and the drain tank 200 and the eccentric holes 131 and 231 of the left and right adjusting members 130 The mortar 303 is applied to the height of the cover plate 141 of the closure member 140 and the tile 304 is attached to the cover member 141. At this time, The upper and lower drain connection pipes 320 and 320 are connected to the upper and lower adjustment members 150 and 320. The upper and lower drain connection pipes 320 and 320 And adjusts the height while rotating the upper and lower adjusting member 150.

The drainage tank (200) receives the backflow chamber (240) and joins the filter network (250). As shown in FIG. 7, the drainage tank 200 may be spaced apart from the drainage port 100 by using a long connection pipe 601, as shown in FIG. 7, Likewise, it is also possible to connect another drain tank, a toilet or a drain pipe of the sink to the sub connection hole 108 of the drain hole 100. At this time, an elbow (not shown) bent at a predetermined angle may be coupled to the sub connection hole 108 as described above.

First, even if there is a deviation in the right and left positions of the drain port between the upper and lower layers, the deviation can be adjusted by the movement of the closing member 140 and the installation can be performed accurately.

Second, since the cover member 500 and the waterproofing liquid groove forming member 400 are coupled, the finish is clean and there is no fear of putting foreign matter into the interior.

Third, the coupling of the hopper 110 prevents the discharge of odor, reduces drainage noise, and prevents reverse flow of wastewater.

Fourthly, it is possible to perform the installation without cutting the tile in consideration of the aesthetics of the tile when the closure member 140 is moved.

Fifth, by using the auxiliary ring members 120 and 220, the height can be adjusted even if there is a level difference from the concrete 130 placed.

Sixth, since the waterproofing liquid groove forming member 400 is used, the waterproofing liquid groove 301 can be easily formed, and the water pouring operation can be simplified by omitting the concrete pouring operation according to the conventional waterproofing liquid groove formation, ).

Seventh, it prevents backflow of dirt when draining laundry.

Eighth. It is possible to arbitrarily adjust the position of the drain tank 200 from the position of the drain port 100. [

Ninthly, by forming the sub connection hole 108 in the drain hole 100, connection with another drain hole is made possible, contributing to unification of the drain hole.

Claims (12)

A drainage pipe assembly which is partially embedded in the floor and connected to the drainage connection pipes in the upper and lower layers and is disposed in the drainage pipe assembly for drainage of the waste water at the bottom thereof so as to expose the upper and lower surfaces thereof, A drain port formed with a connection hole communicating with the drain hole and having a coupling groove through which the lower drain connection pipe is coupled at one end, and a drain port connected to the drain hole by a connection pipe having a predetermined length, A drain hole communicating with the bottom at one end and closed at the other end to form a receiving space in a predetermined space; and a drain hole rotatably coupled to each upper end of the drain hole and the drain hole, A left and right adjusting member having a small eccentric hole formed therein, a screw portion formed on an inner peripheral surface of the upper engaging portion, A lower coupling unit loosely coupled to each of the eccentric holes, and a lower coupling unit coupled to the upper coupling unit and the lower coupling unit, wherein the upper coupling unit is coupled to the lower coupling unit, And a drain connection hole communicating with the drainage tank. The drainage connection member is connected to the upper end of the drainage pipe and the drainage tank, A waterproofing liquid groove forming member for forming a waterproofing liquid groove on the upper edge of the drain hole and the drain tank; a filter net having a plurality of holes formed in the drain connection hole; A connecting member to which the washing water discharge pipe of the washing machine is connected; Wherein the bubble prevention means is provided with a bubble prevention means for preventing bubble generation. The drain pipe assembly according to claim 1, further comprising a hopper coupled to the inside of the drain hole so as to be spaced from the inner circumferential surface of the drain hole by a predetermined distance. The water pipe assembly according to claim 2, wherein a plurality of blades for guiding the wastewater falling onto the inner circumferential surface of the hopper are formed at a predetermined angle. The waterproofing liquid container according to claim 1, wherein the waterproofing fluid groove forming member has an annular ring portion coupled to the upper edge of the drain hole and the drain tank, and a cover connected to the drain hole and the drain tank by a connecting piece, And a drain pipe assembly The drain pipe assembly according to claim 4, wherein a plurality of blocking ribs are formed on an outer periphery of the drain hole and the drain hole so as to face the annular portion. The drain pipe assembly according to any one of claims 1 to 5, further comprising a cover member coupled to the coupling groove of the drain hole to block the drain hole and the coupling groove. Wherein the connection member includes a fixing pipe fixedly coupled to the filter net, and a connection pipe having one end rotatably coupled to the fixing pipe and the other end connected to the washing water discharge pipe. The water pipe assembly according to claim 7, wherein the connection pipe is formed of a flexible synthetic resin material which is elastically deformable. [2] The apparatus according to claim 1, wherein the bubble prevention means comprises: an outer wall having a support rim supported on an edge of the drain connection hole at an upper end thereof and having a plurality of through holes at an upper outer periphery thereof; A main cylinder having a main cylinder wall extending at a predetermined interval and communicating with both ends thereof; a sub-cylinder wall coupled to the inside of the main cylinder wall and closed at a lower end thereof; A sub guidewire having a tapered surface formed between the support jaw and the sub-wall and having a plurality of through holes; a sub guide wall coupled to the inside of the sub-tubule and communicating with the upper and lower portions; A sub guiding member which is supported on the sub cylinder and has an upper end portion formed with a seating protrusion which is in close contact with the bottom surface of the filter net, And a main guide member having a main guide wall coupled between the outer wall and the main wall and a supporting rib supported at the upper end of the supporting wall of the main cylinder at an upper end of the main guide wall. The water pipe assembly according to claim 9, wherein the main cylinder and the sub cylinder are integrally formed. The water pipe assembly according to claim 1, wherein the main cylinder and the sub cylinder are integrally formed. 12. The water pipe assembly according to claim 11, wherein an elbow bent at a predetermined angle is further coupled to the sub connection hole so that one end thereof is rotatably coupled.