KR20180070274A - drainage unit of sink with leakage protection structure - Google Patents

Abstract

The present invention relates to a leakage prevention drainage unit of a sink, comprising: a drain basin having a locking edge part formed on the top of a body; a fixing ring coupled to the drain basin to fix the drain basin to a bucket; and a water return means to allow water leaked through a gap between the locking edge part of the drain basin and the upper surface of the bucket to flow in a drain pipe. According to the present invention, the water return means is coupled to the fixing ring, and comprises: a rotary ring having a reservoir channel; and a water return hose connected to the reservoir channel to receive the stagnated water and allow the same to flow down. A drain port connected to the drain pipe is installed at the bottom of the drain basin and the water return hose communicates with the drain port. A connection port communicating with a drain hole is disposed on one side of the rotary ring and the water return hose is connected to the connection port. Moreover, the drain unit comprises a check valve to prevent backflow water of the drain pipe from entering a water return hose. As such, even if water leakage occurs due to a problem in a waterproof configuration between the bucket and the locking edge part of the drain basin, the leaked water is prevented from flowing to the outside due to a characteristic that the leaked water is returned to a drain pipe side, thereby effectively preventing a problem of polluting a kitchen due to the water leakage.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a drainage-

The present invention relates to a leak preventive drain unit of a countertop capable of effectively preventing occurrence of a problem due to leakage by allowing leaked water to be collected at the drain pipe side even if leakage occurs in the drain pipe installation structure of the sink

Generally, a sink includes a bucket for storing water and a drain unit for treating waste water mounted on the bucket, for cooking or washing dishes in a kitchen.

The drainage unit serves to smoothly drain the sewage discharged to the bucket when washing dishes, etc., and to filter the food waste. The drainage unit includes a drainage passage attached to the lower surface of the bucket, a drainage line built into the drainage tank, And a drain pipe connected to the drain pipe.

According to this drainage unit, the sewage generated by washing dishes, etc. is discharged through the drainage tank, the food waste mixed with the sewage is filtered by the sieve, and the sewage passing through the drainage pipe flows out to the drain pipe of the building through the drainage pipe do.

On the other hand, the conventional drainage unit can be divided into a so-called locking ring system and a fixed ring system depending on the installation structure of the drainage can.

In the hooking ring system, a drainage passage is supported by a drainage passage threaded from an upper part of the bucket to a lower part of a drainage cylinder, which is disposed below the bucket (not shown).

In such a conventional locking ring system, there is a problem in the watertight structure between the locking ring and the bucket, so that even if water leaks between the locking ring and the bucket, the upper end of the drain can surround the locking ring from below the bucket So that the leaked water does not leak outside the drain pipe but flows into the drain pipe.

Therefore, according to the latching ring system, even if leakage occurs between the latch ring and the bucket, there is almost no possibility of occurrence of a phenomenon that leaked water leaks out of the drain cylinder and damages occur.

However, in the case of such a locking ring system, a clearance is formed due to the connection with the locking ring on the inner surface of the drainage cylinder due to the fastening structure of the locking ring and the drainage cylinder. It can get stuck and get dirty.

In addition, there is a problem that it is difficult to maintain the clean state because the clearance is not properly cleaned unless the drainage passage locking ring is disassembled due to the nature of the gap formed at the connecting portion of the drainage passage locking ring.

The fixed ring system has a structure in which a drainage cistern 10 is formed at a top end of a main body 12 and a rim 14 is formed as shown in Fig. 1, and the main body 12 of the drainage cistern 10 is connected to a bucket 5 And the drainage tube 10 is supported by the hooking rim portion 14 being hooked on the upper surface of the bucket 5.

The fixing ring 20 is screwed to the drain tube 10 below the bucket 5 and is pressed against the latching rim 14 with the bucket 5 interposed therebetween to fix the drain tube 10 do.

In the fixed ring system, the packing ring 16 provided between the hooking rim 14 of the drain tank 10 and the upper surface of the bucket 5 is pressed down by the latching rim 14, Thereby forming a watertight structure.

On the other hand, in the case of the fixed ring system, the clearance is not formed on the inner surface of the drain tube 10 as in the case of the locking ring system and is smooth, so that the cleaning can be easily performed and the cleanliness can be maintained.

However, in the case of the fixed ring system, the watertightness is achieved only by the packing ring 16 interposed between the engagement rim 14 of the drainage cylinder 10 and the upper surface of the bucket 5. Therefore, There is a high possibility that water leakage may occur when the packing ring 16 is not maintained in a uniform state due to a step or an impact during use.

Since the fixing ring 20 is engaged with the drain canister 10 in such a manner as to partly surround the outer surface of the upper end of the drain canister 10, the engagement rim 14 of the drain canister 10 and the upper surface Water leaks to the outside of the drain canister 10 through the gap between the drain canister 10 and the stationary ring 20, thereby adversely affecting the kitchen environment A problem arises.

The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a water leakage prevention device, a water leakage prevention device, a water leakage prevention method, Which can prevent the occurrence of problems caused by the leakage of water

According to an aspect of the present invention, there is provided a water leakage prevention and drainage unit for a sink according to the present invention, the water leakage prevention unit including a catching rim at an upper end of the body, And a drain pipe connected to the drain pipe under the bucket so that the drain pipe is fixed to the bucket, and water leaking through the gap between the rim of the drain pipe and the upper surface of the bucket is discharged to the drain pipe And a returning means for allowing the water to flow in.

The water returning means includes a rotating ring rotatably coupled to the stationary ring and having a water channel for storing water to be drained at the upper end thereof and a rotating ring connected to the water channel of the rotating ring to receive water flowing in the water channel, And a return hose.

And a drain port connected to the drain pipe at one end of the drain pipe is provided at a lower end of the drain pipe, and the return hose communicates with the drain port.

The water storage channel of the stationary ring is composed of a bottom portion extending from the upper end of the rotary ring in the horizontal direction on the outer side and a watertight wall portion vertically protruding from the outer edge of the bottom portion, A discharge hole for discharging downward is formed.

One end of the rotary ring is provided with a connection port communicating with the discharge hole, and the upper end of the return hose is connected to the connection port.

A water storage portion for storing the water when the water leaks into the space between the stationary ring and the rotary ring is formed at a lower end of the rotary ring and an opening portion communicating with the water storage portion is formed at a side surface of the connection port.

The leak preventive drain unit of the sink according to the present invention includes a check valve for preventing water flowing backward from the drain pipe to the drain port side to flow into the return hose side.

The check valve is comprised of a valve housing fitted to the drain port, a valve housing formed in a middle portion thereof, and a valve membrane fixed by a fixing pin fitted to the support.

The stationary ring and the rotary ring are interlocked and rotated together when the rotary ring is rotated over a certain angle.

As described above, according to the leakage prevention drainage unit of the sink according to the present invention, even if leakage occurs due to a problem in water tightness between the bucket and the rim of the drainage canal, There is an advantage that the problem of contamination of the kitchen due to leakage of water is effectively prevented.

1 is an exploded perspective view showing a structure of a drainage unit of a sink according to the prior art;
2 is an exploded perspective view showing the structure of a leakage prevention drainage unit of a sink according to the present invention;
Fig. 3 is a perspective view showing the structure of the waterproof drainage unit of the sink according to the present invention.
Fig. 4 is a partially cutaway perspective view showing the structure of the waterproof drainage unit of the sink according to the present invention.
5 is an exploded perspective view showing a configuration of a check valve applied to a leakage prevention drainage unit of a sink according to the present invention.
6 is a cross-sectional view showing a configuration of a water leakage prevention drainage unit of a sink according to the present invention;

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

2, 3 and 4, the main body 32 is provided at the upper end of the bucket 5, and the bucket 5 is provided with the buckle 5, (See FIG. 6) so that the hooking rim portion 34 is hooked on the upper surface of the bucket 5, and a drain pipe 30 extending from the drain pipe 30 below the bucket 5, Between the upper end of the bucket 5 and the upper end of the bucket 5 and the upper end of the bucket 5 and the lower end of the bucket 5, And water flowing into the drain pipe through the gap between the drain pipe and the drain pipe.

The water returning means includes a rotary ring 50 rotatably coupled to the stationary ring 40 and having a water channel 52 for accumulating water leaking at the upper end thereof, 52 for receiving water flowing therefrom and allowing the water to flow down.

The drain hose 60 is connected to the drain port 36 so that water leaks to the drain port 36. The drain hose 60 is connected to the drain port 36, .

The water storage channel 52 of the rotary ring 50 includes a bottom 521 extending from the upper end of the rotary ring 50 in the horizontal direction on the outer side and a bottom 521 extending vertically from the edge of the bottom 521 And a bottom wall 521. The bottom 521 is formed with a discharge hole 52a through which water flowing into the water storage channel 52 flows downward.

A connection port 58 communicating with the discharge hole 52a is provided on one side of the rotary ring 50. The upper end of the connection hose 60 is fitted into the connection port 58, do.

The lower end of the rotary ring 50 is formed with a reservoir 501 for storing water when the water leaks into the space between the stationary ring 40 and the rotary ring 50. On the side surface of the connection port 58, And an opening portion 58a communicating with the reservoir portion 501 is formed.

Here, the bottom portion 501 has a shape in which the lower end of the rotary ring 50 is curled inwardly and encircles the lower end of the stationary ring 40 when viewed in section.

The present invention includes a check valve (70) for preventing water flowing backward from the drain pipe to the drain port (36) side to the side of the return hose (60).

5, the check valve 70 is inserted into the drain port 36 and includes a valve housing 72 having a support 721 formed therein, and a fixing pin 74 And a valve membrane 76 fixed by a cap member 76. As shown in Fig.

 The lower end of the return hose (60) is fitted into the valve housing (72), thereby communicating with the drain port (36).

Further, in the present invention, the stationary ring 40 and the rotary ring 50 are configured to rotate together when the rotary ring 50 is rotated over a certain angle.

The interlocking structure of the stationary ring 40 and the rotary ring 50 is such that a locking protrusion 42 is formed on the outer circumferential surface of the stationary ring 40 and a locking piece 54 is formed on the inner circumferential surface of the rotary ring 50, And the latching protrusion 42 and the latching piece 54 are engaged with each other in the horizontal direction.

The engagement structure of the stationary ring 40 and the rotary ring 50 is such that the stationary ring 40 and the rotary ring 50 are not separated from each other while the rotary ring 50 is freely rotated with respect to the stationary ring 40 .

A protrusion 44 protruding outwardly is formed on the outer circumferential surface of the fixing ring 40 so as to be elongated and an inner circumferential surface of the rotating ring 50 is provided with a protrusion A jaw portion 56 is formed.

The protruding jaws 56 are formed in a manner that a plurality of protruding jaws 56 are arranged at regular intervals,

According to the present invention, the locking ring 40 is lowered against the rotary ring 50 so that the locking jaw 44 of the locking ring 40 is caught on the protruding jaw 56 of the rotary ring 50 Whereby the rotary ring 50 and the stationary ring 40 are fastened to each other.

The assembling process of the leakage preventing drain unit according to the present invention constructed as described above will be described as follows.

The drainage tank 30 is supported by the main body 32 from below the bucket 5 so that the engaging rim portion 34 is caught by the upper surface of the bucket 5, As shown in Fig.

The retaining ring 40 is inserted into the main body 32 of the drain canister 30 under the bucket 5 while being locked with the rotary ring 50 as described above and then the main body 32 So that the drain canister 30 is fixed to the bucket 5.

At this time, when the rotation ring 50 is rotated in the locking direction due to the characteristic that the engagement piece portion 54 of the rotation ring 50 and the engagement projection portion 42 of the stationary ring 40 are engaged, So that the locking operation is performed.

A packing ring 38 is interposed between the rim 34 of the drainage cylinder 30 and the upper surface of the bucket 5 and the upper end of the stationary ring 40 is rotated When the bottom surface of the bucket 5 is pressed against the bucket 5, the engagement rim 34 is pressed downward and the packing ring 38 is pressed onto the upper surface of the bucket 5, do.

A plurality of packing rings 46 are also provided between the inner surface of the stationary ring 40 and the outer surface of the main body 32 of the drain pan 30.

The upper end of the return hose 60 is inserted into the connection port 58 and the lower end of the return hose 60 is connected to the check valve 70 To the rear end of the valve housing 72 of the engine.

At this time, when the check valve 70 mounted on the connection port 58 and the drain port 36 is located at a distance, the rotation ring 50 is appropriately turned so that the connection port 58 is close to the check valve 70 The distance to the check valve 70 can be narrowed.

According to the leakage preventive drainage unit of the present invention, when water leakage occurs between the hooking edge portion 34 of the drainage tank 30 and the bucket 5 as shown in FIG. 6, And flows into the water storage channel 52 formed at the upper end of the stationary ring 40 in most cases.

The water introduced into the water storage channel 52 flows into the water storage channel 52 without flowing over to the outside of the water storage channel 52 due to the constitution of the water storage wall portion 522 and the water discharge hole 52a formed in the bottom portion 521, Lt; / RTI >

The water discharged through the discharge hole 52a flows downward through the water return hose 60 and flows into the drain port 36 under the drainage tank 30 through the check valve 70. Then, ≪ / RTI >

In the check valve 70, the water flows downward along the return hose 60 and flows into the valve housing 72. When the amount thereof becomes equal to or more than a predetermined value, the valve membrane 76 is opened by the load pressure of water Whereby the water flows to the drain port 36 side.

On the other hand, even if the leaked water flows down into the gap between the drainage cylinder 30 and the stationary ring 40 instead of the water storage channel 52 of the stationary ring 40, It can be seen that there is no possibility that the leaked water leaks through the gap between the drainage cylinder 30 and the stationary ring 40 due to the nature of the plurality of packing rings 46. [

Even if the leaked water seeps into the space between the stationary ring 40 and the rotary ring 50 and flows down therefrom, the water falls off the water storage portion 501 formed in the rotary ring 50, The tapped water flows into the connection port 58 through the opening 58a and flows down through the water return hose 60. [

According to the present invention, even if the water flowing down from the drainage tub 30 due to clogging of the drainage pipe is not properly drained but flows backward, the water that is reversely flowed is blocked by the check valve 70, So that the leakage phenomenon can be prevented.

The shutoff function of the check valve 70 is such that the valve membrane 76 is supported from one side by the support 721 so that the valve membrane 76 is opened only when the flow of water is normal (return hose-> drain port) And is not opened when the flow of water is reverse (drain port -> water return hose).

As described above, according to the present invention, there is a problem in that the water tightness between the bucket 5 and the engagement edge portion 34 of the drain canister 30 may cause a problem of water leakage, Is effectively prevented.

30: drain box 32: main body 34: engaging rim 36: drain port 38: packing ring
40: fixing ring 42: engaging protrusion 44: engaging jaw
50: rotation ring 52: water storage channel 52a: discharge hole 521: bottom part 522:
54: engaging piece portion 56: projecting portion 58: connecting port 60: return hose
70: Check valve 72: Valve housing 721: Support 74: Fixing pin 76: Valve membrane

Claims (10)

Wherein the main body is fitted to the bucket so that the engaging rim is hooked on the upper surface of the bucket,
A fixed ring coupled to the drain pipe under the bucket to fix the drain pipe to the bucket,
And a water returning means for allowing water to be leaked through the gap between the rim of the water drain tube and the upper surface of the bucket,
Wherein the water leakage prevention unit comprises:
The method according to claim 1,
The return means
A rotary ring rotatably coupled to the stationary ring and having a water channel in which water leaking is accumulated,
A return hose for receiving water flowing in the water storage channel of the rotary ring and flowing the water,
Wherein the water leakage prevention unit comprises:
3. The method of claim 2,
A drain port connected to the drain pipe at one end of the drain pipe is provided at a lower end of the drain pipe,
The return hose communicates with the drain port so that the leaked water flows to the drain port
Wherein the waterproof drainage unit of the sink is characterized in that:
The method of claim 3,
The water storage channel of the stationary ring is composed of a bottom portion extending from the upper end of the rotary ring in the horizontal direction on the outer side and a watertight wall portion vertically protruding from the outer edge of the bottom portion, A discharge hole formed downwardly
Wherein the waterproof drainage unit of the sink is characterized in that:
5. The method of claim 4,
A connection port communicating with the discharge hole is provided at one side of the rotary ring,
Wherein the upper end of the return hose is connected to the connection port
Wherein the waterproof drainage unit of the sink is characterized in that:
6. The method of claim 5,
A water storage portion for storing the water when the water leaks into the space between the stationary ring and the rotary ring is formed at the lower end of the rotary ring, and an opening portion communicating with the water storage portion is formed on the side surface of the connection port
Wherein the waterproof drainage unit of the sink is characterized in that:
6. The method of claim 5,
And a check valve for preventing water flowing backward from the drain pipe to the drain port side to flow into the return hose side.
8. The method of claim 7,
Wherein the check valve is comprised of a valve housing fitted to the drain port and having a support in the middle, and a valve membrane fixed by a fixing pin fitted to the support,
The return hose being connected to the valve housing and thereby communicating with the drain port
The leakage preventing drain unit
3. The method of claim 2,
The stationary ring and the rotary ring are configured such that when the rotary ring is rotated over a predetermined angle, the stationary ring and the rotary ring are rotated together
The leakage preventing drain unit
10. The method of claim 9,
The holding ring is formed on an outer circumferential surface of the stationary ring, a locking piece is formed on the inner circumferential surface of the rotating ring, and the locking ring and the locking piece are engaged with each other in the horizontal direction,
Wherein the waterproof drainage unit of the sink is characterized in that:

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