WO2019225958A1

WO2019225958A1 - Drain control device

Info

Publication number: WO2019225958A1
Application number: PCT/KR2019/006104
Authority: WO
Inventors: 손정우
Original assignee: Son Jung Woo
Priority date: 2018-05-23
Filing date: 2019-05-22
Publication date: 2019-11-28
Also published as: KR102053528B1; KR20190133344A

Abstract

The present invention relates to a drain control device. The drain control device according to the present invention comprises: a main body part which stores water and which has a drain port formed at the lower end thereof; a water level regulating part including a float that floats on the surface of water; a drain control part, which includes a water discharge cover formed on the upper part of the drain port, controls the discharge of water according to the operation of the water discharge cover, and stores air therein; and an air discharge pipe for connecting the drain control part and the water level regulating part, wherein the water level regulating part includes an opening/closing control part for controlling the opening/closing of the air discharge pipe and, when air of the drain control part is discharged through the air discharge pipe according to the operation of the opening/closing control part, the water discharge cover closes the drain port.

Description

Drainage

The present invention relates to a drain control device, and more particularly, to a device having a drainage function, such as a toilet, and to a drain control device capable of adjusting the drainage.

Recently, there is a growing concern about the depletion of water resources in society, and as a result, governments have proposed various ways to save water for citizens, and as a result, social awareness of water resources has increased and conserving water resources. Various solutions are proposed in various forms.

Recently, a method for utilizing waste water from a faucet has been proposed. A faucet is a device that opens and closes water at the end of a water supply pipe. The faucet can be divided into various types according to the installation location, use, or function. It can be connected to a boiler to provide hot water to the user. The current situation is that the user wastes a considerable amount of water because the hot water does not immediately come out even if the user operates the faucet with hot water to use hot water through such a faucet.

As a technique for utilizing the waste water in the faucet, there is a patent filed by the present applicant "Pastation and building water-saving faucet system" (application number: 10-2017-0167511), in addition to recently wasted in the faucet Research and development to utilize the water is being actively conducted.

In this way, the water wasted from the faucet can be used to store and drain the water, such as a toilet bowl, and the existing devices have the form of draining all the stored water at a time, and is equipped with a device for adjusting the amount of drainage Because it is not, simply storing more water wasted from the faucet will have to drain all the stored water at once.

In other words, even if the water wasted from the faucet for water saving is sent to a device that stores and drains water, such as a toilet, the stored water is drained at once. There is a need to control the drainage of stored water to drain.

As a related art, there is a registered Patent Publication No. 10-1713620 (name of the invention: a washing water saving control device for a toilet and a control method thereof).

The present invention is to solve the above-mentioned problems of the prior art, an object of the present invention to provide a drain control device that can be discharged by adjusting the discharge amount when draining the stored water.

Drain control apparatus according to the present invention for achieving the above object is to store the water, the body portion is formed with a drain hole at the bottom; A water level control unit including a rich man floating on the water surface of the water; A water discharge cover formed at an upper portion of the drain hole, and controlling a water discharge according to the operation of the water discharge cover and storing air therein; And an air discharge pipe connecting the drain control unit and the water level control unit, and the water level control unit includes an opening and closing control unit for controlling the opening and closing of the air discharge tube, and the drainage through the air discharge pipe according to the operation of the opening and closing control unit. When the air of the control unit is discharged, the water discharge cover may close the drain port.

In addition, the water level control portion of the drainage control apparatus according to the present invention is formed in the upper air outlet; An air discharge cover for opening and closing the air discharge port; A catching bar extending in the air discharge cover; And an air discharge portion protruding from the upper portion of the rich part and including a coupling plate hinged to the middle of the locking bar such that the locking bar rotates.

In addition, the water level control unit of the drainage control device according to the present invention may further include a fixing portion coupled to the rich, so that the rich man is elevated along the surface of the water.

In addition, the fixed portion of the drainage control apparatus according to the present invention is a straight-shaped strut formed at right angles to the water surface; And along the longitudinal direction of the support, it may include a screw formed on the side of the support.

In addition, the opening and closing adjustment portion of the drainage control device according to the present invention is a screw screw and the rotating screw to move; A central axis formed at the center of the rotating screw; A connecting shaft screwed with the central shaft; And a locking protrusion formed on the connection shaft and rotating according to the rotation of the connection shaft.

In addition, the locking projection of the drain control device according to the invention rotates in accordance with the rotation of the connecting shaft, the locking projection may press the upper end of the locking bar can be opened the air discharge cover.

In addition, the drain control portion of the drain control device according to the invention water discharge cover for opening and closing the drain hole formed in the lower body; And an air inlet formed at a lower end of the water discharge cover and configured to store air therein.

In addition, in the drain control device according to the present invention, when the water discharge cover closes the drain, air may be introduced into the air storage through the air inlet.

The drainage control apparatus according to the present invention can drain only a portion of water rather than temporarily draining the water stored therein. That is, the apparatus for adjusting drainage according to the present invention may adjust the amount of drainage.

In addition, the drainage control device according to the present invention can be discharged by adjusting the amount of water even when storing more water than conventional toilet.

In addition, the drainage control device according to the present invention can be discharged by adjusting the amount of water even in the case of storing more water in the toilet, it is possible to use by sending the residual water wasted from the faucet in the toilet, thereby The water saving of the water used can be maximized.

1 is a perspective view showing the internal structure of the drainage control apparatus according to the present invention.

2 is a perspective view showing the internal structure of the drainage control apparatus according to the present invention.

3 is a plan view showing the internal structure of the drainage control apparatus according to the present invention.

4 is an operational state diagram of the drainage control apparatus according to the present invention.

5 and 6 is a perspective view showing a water level adjusting unit according to the present invention.

Figure 7 is a perspective view of the bottom of the drain control portion according to the present invention.

In the following description of the present invention, detailed descriptions of well-known functions or configurations will be omitted when it is deemed that they may unnecessarily obscure the subject matter of the present invention.

Since the embodiments according to the concept of the present invention can be variously modified and have various forms, specific embodiments will be illustrated in the drawings and described in detail in the present specification or application. However, this is not intended to limit the embodiments in accordance with the concept of the present invention to a particular disclosed form, it is to be understood that the present invention includes all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between. Other expressions describing the relationship between components, such as "between" and "immediately between," or "neighboring to," and "directly neighboring to" should be interpreted as well.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. As used herein, the terms "comprise" or "having" are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof that is described, and that one or more other features or numbers are present. It should be understood that it does not exclude in advance the possibility of the presence or addition of steps, actions, components, parts or combinations thereof.

1 is a perspective view showing the internal structure of the drain control device according to the invention, Figure 2 is a perspective view showing the internal structure of the drain control device according to the invention, Figure 3 is an interior of the drain control device according to the invention The structure is a plan view. 1 to 3, the drainage control apparatus according to the present invention stores water and the main body portion 100 is formed with a drain hole 110 at the bottom; A water level control unit 300 including a rich person 310 floating on the surface of the water stored in the main body 100; A water discharge cover 410 formed at an upper portion of the drain port 110, and controlling the water discharge according to the operation of the water discharge cover 410 and storing the air therein; And it may be configured to include an air discharge pipe 430 connecting the drain control unit 400 and the water level control unit 300.

At this time, the water level control unit 300 includes an opening and closing control unit 330 for controlling the opening and closing of the air discharge pipe 430, the drain control unit 400 through the air discharge pipe 430 in accordance with the operation of the opening and closing control unit 330. When the air is discharged to the water discharge cover 410 may close the drain port (110).

In addition, the water level control unit 300 is rich (浮子, 310) floating on the surface of the water stored in the main body 100 (; 子); An air discharge unit 320 for controlling the discharge of the air stored in the drain control unit 400; And an opening / closing control unit 330 for opening or closing the air discharge unit 320, and as the air discharge unit 320 is opened to discharge the air stored in the drain control unit 400 to the outside. Drain control unit 400 may be closed. In this case, the rich 310 may be formed of a material having a specific gravity smaller than that of water and may be floated on the surface of water, and may be formed in a form including air therein as necessary.

The main body 100 is a component in which water is supplied or discharged to the inside, and may store water supplied from the outside (for example, water), and the stored water may be stored in the main body 100 by opening the drain control unit 400. It may be discharged through the drain 110 formed in). In addition, the main body 100 according to the present invention may be supplied with the remaining faucet from the faucet in addition to the water, if necessary, and stored.

The water supply unit 200 is a component for supplying water and may be connected to an external water supply (not shown) to supply water to the main body unit 100. For example, when the drainage control device according to the present invention is applied to the toilet, the water supply unit 200 may supply the water to the body portion 100, but may also supply a portion of the water to the toilet side residual water.

Specifically, the water supply unit 200 is a hollow water supply pipe 210; And a residual water supply pipe 220 installed through the hollow of the water supply pipe 210, wherein the residual water supply pipe 220 may be connected to the toilet bowl through the lower end of the main body part 100. Referring to FIG. 2, water is supplied to the main body 100 through the water supply pipe 210, and a part of the water supplied from the water is supplied to the toilet side residual water at the bottom of the main body 100 through the residual water supply pipe 220. You can see the supply.

For reference, a water supply control valve 211 may be installed to control the water supply.

The water level control unit 300 is a component that floats on the water surface, and adjusts the timing of closing the drain 110 so that the amount of water stored in the main body 100 and the water discharged from the main body 100 to the outside. You can adjust the amount. That is, the water discharge cover 410 formed in the drain control unit 400 closes the drain port 110 before all of the water stored in the main body 100 is discharged, so that only a part of the water stored in the main body 100 is externally discharged. Can be discharged.

Drain control unit 400 is formed on the upper drain 110, the water discharge of the main body 110 as a control component, the water discharge cover 410 formed in the drain control unit 400 is opened to the main body 100 Water may be discharged through the drain hole 110 formed at the bottom, and the water discharge cover 410 formed in the drain control unit 400 may block the drain hole 110 to block the water discharge.

The drainage control device according to the present invention by controlling the discharge of the air stored in the drain control unit 400, it is possible to control the opening and closing of the drain control unit 400. Specifically, the timing or the amount of air discharged from the drain control unit 400 can be adjusted by the opening and closing control unit 330, by the operation of the opening and closing control unit 330, the air discharge unit (310) formed in the rich (310) ( 320 may be opened so that the air inside the drain control unit 400 may be discharged to the outside, and the drain control unit 400 may be closed by discharging the air inside the rich 310 to the outside.

At this time, the rich 310 may be connected through the drain control unit 400 and the air discharge pipe 430, and also the rich 310 may be formed with an air outlet 321 to communicate with the air discharge pipe 430, such In the structure, the air inside the drain control unit 400 may be discharged to the outside through the air discharge pipe 430 and the air discharge port 321.

Conventional toilets in the prior art simply by opening or closing the drain 110 according to the height of the rich float on the water surface, was forced to discharge the water inside the water tank at once.

However, the present invention can adjust the amount of water discharged to the outside from the body portion 100 by adjusting the opening and closing of the drain 110 by adjusting the discharge of the air of the drain control unit 400, the present invention If applied, the water stored in the main body 100 may be drained by adjusting the amount of water discharged without having to drain it at once.

The present invention having such technical characteristics can be utilized for various purposes, in particular, it is possible to save water resources by utilizing the remaining faucet waste in the faucet.

For example, when the water remaining in the faucet is used to send the water to the toilet tank, the water tank stores more water than before. In the conventional general toilet, the water tank discharges all the internal water at once. Even if the remaining faucet is stored more, the amount of water used at a time is increased, and the actual water resource saving cannot be achieved.

However, when the present invention is applied to a toilet, since the main body 100 can discharge by adjusting the amount of water discharged when storing the remaining faucet can achieve substantial water resource saving unlike conventional toilets have.

For example, if the amount of water consumed when the user uses the toilet once is 6 liters and the amount of water (water) stored in the main body 100 of the present invention is 10 liters, The water discharge cover 410 blocks the drain port 110 by the operation of the opening and closing control unit 330 at the timing of discharging the positive 6 liters, thereby preventing further water discharge, and thus the invention remains in the main body 100. 4 liters can be saved.

4 is an operational state diagram of the drainage control apparatus according to the present invention. In FIG. 4 (a), the drain outlet 110 is shown in an open state, and in FIG. 4 (b), the drain outlet 110 is shown in a closed state. As shown in Figure 4 (a), when the user presses the lever 500 installed in the main body 100, the connecting rod 510 coupled to the lever 500 is raised, if the connecting rod 510 is raised connecting rod The drain control part 400 is lifted upward through the chain 520 coupled to the 510 so that the drain hole 110 is opened and water is discharged through the drain hole 110.

As the water is discharged in this way, the water level in the body portion 100 is gradually lowered, and the rich man 310 floating on the water surface is also moved downward along the water level. In accordance with the movement of the rich 310, the water level control unit 300 is also moved downward along the water level as a whole, the opening and closing control included in the water level control unit 300 in accordance with the movement of the water level control unit 300 Part 330 may be configured to control the opening and closing of the air discharge pipe 430. When the air of the drain control unit 400 is discharged to the outside through the air discharge pipe 430 according to the operation of the opening and closing control unit 330, the water discharge cover 410 may close the drain port 110.

5 and 6 is a perspective view showing a water level adjusting unit according to the present invention. 5 and 6, the water level control unit 300 according to the present invention is rich (310) floating on the water surface (floating); An air discharge unit 320 for controlling the discharge of the air stored in the drain control unit 400; And an opening / closing control unit 330 for opening or closing the air discharge unit 320.

And the air discharge unit 320 is formed on top of the rich 310, the air discharge port 321 is in communication with the air discharge pipe 430; An air discharge cover 323 for opening and closing the air discharge port 321; Hanging bar 324 extending to the air discharge cover 323; And a coupling plate 325 protruding from the upper portion 310 and hinged to the middle of the locking bar 324 to rotate the locking bar 324. And at this time, the air discharge pipe 322 may be formed in a state protruding on the upper portion 310, the air discharge port 321 may be formed on the top of the air discharge pipe 322. In addition, a coupling plate rib 325a may be formed in the coupling plate 325 to improve the holding force of the coupling 325. And if the air discharge pipe 322 is formed, in order to improve the bearing capacity of the air discharge pipe 322 may be formed air discharge management 322a.

The air outlet 320 of this configuration may be opened or closed by the operation of the opening and closing control unit 330. That is, in the present invention, the opening and closing control unit 330 may be configured in various forms such that the air discharge unit 320 is opened or closed, with reference to FIGS. 5 and 6 according to an embodiment. Let's look at the configuration of the concrete.

Opening and closing control unit 330 according to the present invention is a rotary screw 331; A central axis 332 formed at the center of the rotation screw 331; A connecting shaft 333 screwed to the central shaft 332; And formed on the connecting shaft 333, it may be configured to include a locking projection 334 to rotate in accordance with the rotation of the connecting shaft (333).

In this configuration, the opening and closing adjustment unit 330 is rotated by the connecting shaft 333 screwed to the central shaft 332 as the central shaft 332 is rotated, the locking projection 334 formed on the connecting shaft 333 ) Will rotate accordingly. The locking protrusion 334 may be formed to contact the locking bar 324 at a predetermined point. In FIG. 6, the locking protrusion 334 contacts one end of the locking bar 324 to close one end of the locking bar 324. The pressurized state is shown.

For reference, the connecting shaft support plate 335 may be formed so that the connecting shaft 333 protrudes above the rich 310 so that the connecting shaft 333 is disposed at the same height as the central axis 332. The connecting shaft support plate ribs 335a may be formed to improve the efficiency.

As the locking projection 334 presses the locking bar 324, the air discharge cover 323 is hinged and lifted up. Then, the air discharge cover 323 is lifted up so that the air outlet 321 is opened so that the air stored in the drain control unit 400 can be discharged to the outside through the air discharge pipe 430 and the air outlet 321. .

In the drain control device according to the present invention, the air stored in the drain control part 400 is discharged to the outside, so that the water discharge cover 410 formed in the drain control part 400 may close the drain port 110. When the water discharge cover 410 closes the drain port 110, the air inside the drain control unit 400 is no longer discharged to the outside, whereby the air discharge cover 323 closes the air outlet 321. Done.

Even though the water inside the body part 100 is not completely discharged by the above operation, the amount of water discharged from the body part 100 can be adjusted by adjusting the drain control part 400 to close the drain port 110 in the middle. have.

In addition, the drainage control apparatus according to the present invention may further comprise a fixing part 340, the fixing part 340 is rich so that the rich man 310 rises along the surface of the water stored in the main body 100, May be combined with 310. 5 and 6, the fixing part 340 includes a straight post 342 formed at right angles to the water surface of the water stored in the main body part 100; And a screw part 341 formed on a side surface of the support stand 342 along the longitudinal direction of the support stand 342. At this time, the screw portion 341 is preferably configured to be screwed to each other and the rotation screw 331 of the opening and closing adjustment unit 330.

In addition, the support stand 342 is formed on one side of the projection in the vertical direction, the fitting portion 311 may be formed on one side of the rich 310 to be fitted to the protrusion. In this state in which the fitting portion 311 is coupled, the rich person 310 may move in the vertical direction. By the configuration of the fixing unit 340, the opening and closing adjustment unit 330 can be elevated along the surface of the water stored in the main body 100. 5 and 6, according to the present invention, as shown in FIGS. 5 and 6, the support part 350 coupled to the lower end of the main body part 100 is separately formed, and the fixing part 340 is coupled to the support part 350. It may be configured as.

In addition, the water level control unit 300 is moved up and down (floating) along the water surface stored in the body unit 100 by the coupling relationship between the fixing unit 340 and the opening and closing control unit 330 as described above. The amount of water discharged from the tank can be controlled.

5 and 6, the central shaft 332 and the connecting shaft 333 of the opening and closing control unit 330 is formed so that the shape of the screw can rotate only in one direction. Can be. If the central axis 332 and the connecting shaft 333 of the opening and closing control unit 330 is formed as shown in Figures 5 and 6, when the central shaft 332 is rotated in the clockwise direction the connecting shaft 333 is It is rotated clockwise while being screwed. Unlike this, when the central axis 332 rotates in the counterclockwise direction, the central axis 332 and the connecting shaft 333 are not screwed together, and only the central axis 332 rotates in the counterclockwise direction.

The combined configuration of the central shaft 332 and the connecting shaft 333 of the opening and closing control unit 330 and the resulting movement is the water level control unit 300 moves up and down along the water surface stored in the main body 100 (floating) By doing so, it is possible to adjust the amount of water discharged from the body portion (100).

As described above, the air discharge cover 323 is finally opened by the rotation of the rotation screw 331 of the opening and closing control unit 330, so that the air inside the rich 310 is discharged to the outside through the air outlet 321. Rotation of the rotation screw 331 is generated by the rotational coupling with the screw portion 341 formed on the side of the support base (342). In the drainage control device according to the present invention, the water level control unit 300 moves up and down (floating) along the water surface of the water stored in the main body 100, and when the water level of the water stored in the main body 100 is lowered accordingly, The rotation screw 331 may rotate to adjust a predetermined timing, that is, a timing at which the air of the air storage unit 420 is discharged to the outside.

As described above, the timing at which the air of the air storage unit 420 is discharged to the outside is such that the locking protrusion 334 contacts one end of the locking bar 324 to press one end of the locking bar 324 as described above. The air discharge cover 323 may be viewed as a timing for opening the air discharge port 321. Therefore, by adjusting the timing of the air discharge cover 323 to open the air outlet 321 it is possible to adjust the amount of discharge of the water in the body portion 100.

That is, in the drain control device according to the present invention, after the user operates the lever 500 to lower the water of the toilet, the water inside the main body 100 starts to be discharged. When the air stored in the) is discharged through the air discharge pipe 430 by blocking the drain 110 by the drain control unit 400, it is possible to adjust the amount of water discharged inside the main body 100.

Figure 7 is a perspective view of the bottom of the drain control portion according to the present invention. Referring to FIG. 7, the drain control part 400 according to the present invention includes a water discharge cover 410 for opening and closing the drain hole 110 formed at the bottom of the main body part 100; And an air inlet 421 is formed at a lower end of the water discharge cover 410 to include an air storage unit 420 for storing air therein.

The drain control unit 400 may enter the air through the air inlet 421 in a state in which the water discharge cover 410 closes the drain port 110 and stores the air in the air storage unit 420. At this time, the water discharge cover 410 may be opened by the operation of the lever 500, and then the air of the air storage unit 420 is discharged to the outside through the air discharge pipe 430 and the air discharge port 321 connected thereto. Can be.

As described above, the air protrusion cover 323 opens the air outlet 321 by pressing the end of the catching bar 324 in contact with one end of the catching bar 324 to open the air storing unit 420. ) Can be discharged, the locking projection 334 is a component that rotates in accordance with the rotation of the rotary screw 331, and after pressing the locking bar 324 in accordance with the rotation of the rotary screw 331 Then, the air exhaust cover 323 opens the air outlet 321 (by the weight of the air exhaust cover 323 because the locking protrusion 334 no longer presses the catching bar 324). It will close again. When the air discharge cover 323 closes the air outlet 321, air may be introduced into the air storage unit 420 through the air inlet 421.

In addition, the drainage control device according to the present invention may be introduced into the air storage unit 420 through the air inlet 421 at the same time as the air of the air storage unit 420 is discharged, the air through the air inlet 421 When water flows into the storage unit 420, the air storage unit 420 becomes heavy, and by this weight, the drain control unit 400 is lowered so that the water discharge cover 410 can close the drain port 110. do.

After the water discharge cover 410 closes the drain port 110, since the air inlet 421 is directed downward (to the drain port 110 side), the air inlet 421 passes through the air storage part 420. The introduced water is discharged downwardly (to the drain 110) through the air inlet 421, and air can be naturally introduced again after the water is discharged.

That is, in the state in which the water discharge cover 410 closes the drain port 110, the air is introduced again through the air inlet 421 to be stored in the air storage 420.

Although the technical spirit of the present invention described above has been described in detail in a preferred embodiment, it should be noted that the above-described embodiment is for the purpose of description and not of limitation. In addition, those skilled in the art will understand that various embodiments are possible within the scope of the technical idea of the present invention. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Claims

A body part storing water and a drain hole formed at a lower end thereof;

A water level control unit including a rich man floating on the water surface of the water;

A water discharge cover formed at an upper portion of the drain hole, and controlling a water discharge according to the operation of the water discharge cover and storing air therein; And

It includes an air discharge pipe connecting the drain control unit and the water level control unit,

The water level control unit includes an opening and closing control unit for controlling the opening and closing of the air discharge pipe, when the air is discharged through the air discharge pipe in accordance with the operation of the opening and closing control unit is discharged water control to close the drain outlet cover Device.
The method of claim 1,

The water level control unit

An air outlet formed in an upper portion of the rich man;

An air discharge cover for opening and closing the air discharge port;

A catching bar extending in the air discharge cover; And

Protruding on the upper portion of the rich, the drain control device further comprises an air discharge portion including a coupling plate hinged to the middle of the locking bar to rotate the locking bar.
The method of claim 1,

And a fixing part coupled to the rich so that the rich man is lifted along the surface of the water.
The method of claim 3,

The fixing part

A straight-shaped strut formed at right angles to the water surface of the water; And

Drainage adjusting apparatus including a screw portion formed on the side of the support, along the longitudinal direction of the support.
The method of claim 4, wherein

The opening and closing control unit

A rotating screw which is coupled to the screw and moves;

A central axis formed at the center of the rotating screw;

A connecting shaft screwed with the central shaft; And

It is formed on the connecting shaft, the drain control device comprising a locking projection to rotate in accordance with the rotation of the connecting shaft.
The method of claim 1,

The water level control unit

An air outlet formed in an upper portion of the rich man;

An air discharge cover for opening and closing the air discharge port;

A catching bar extending in the air discharge cover; And

Protruding to the upper portion of the rich, including an air discharge portion including a coupling plate hinged to the middle of the locking bar to rotate the locking bar,

The fixing part

A straight-shaped strut formed at right angles to the water surface of the water; And

Along the longitudinal direction of the support, including a screw portion formed on the side of the support,

The opening and closing control unit

A rotating screw which is coupled to the screw and moves;

A central axis formed at the center of the rotating screw;

A connecting shaft screwed with the central shaft; And

It is formed on the connecting shaft, and includes a locking projection to rotate in accordance with the rotation of the connecting shaft,

The locking projection rotates in accordance with the rotation of the connecting shaft, the locking projection presses the upper end of the locking bar to open the air discharge cover.
The method of claim 1,

The drain control unit

Water discharge cover for opening and closing the drain; And

It is formed at the bottom of the water discharge cover, the water inlet is formed, the drain control device including an air storage for storing the air therein.
The method of claim 7, wherein

When the water discharge cover closes the drain port, the air is supplied to the air storage through the air inlet to the water adjusting device.