CN112443018B - Valve opening and closing device for toilet and system for recycling cooled hot water in hot water pipe with same - Google Patents

Abstract

The toilet valve opening/closing device according to the present invention may include: a water tank storing water; a drain pipe that drains the water in the tank to a toilet bowl; a valve including an opening/closing plate and a valve guide rod for guiding the opening/closing plate, the valve being configured to selectively open and close the drain pipe; a valve body coupled to the drain pipe to operate the valve; an opening means formed to be able to move the valve guide rod by means of a user's operation; and a closing device including a main floating body formed to be capable of limiting a movement amount, the main floating body being moved downward by the drainage water caused by the valve being opened, thereby being capable of switching the valve to a closed state again.

Description

Valve opening and closing device for toilet and system for recycling cooled hot water in hot water pipe with same

Technical Field

The present invention relates to a toilet valve opening/closing device and a system for recycling cooled hot water in a hot water pipe having the same.

Background

In a building using hot water, such as a bathroom, a bath room, or the like, a tap water pipe for supplying cold water and a hot water pipe for supplying hot water are installed together. The water plug is located at the end of the water supply pipe to open and close the water, and is various depending on the installation position, the use, or the function.

The hot water pipe is connected to a boiler, and water in the hot water pipe from the boiler to the hydrant is cooled by ambient temperature while the hydrant is not in use. Therefore, even if the valve of the water faucet is opened to immediately use the hot water, the cold water that has cooled inside the pipe often flows out for a while. Particularly, when the ambient temperature is low in winter, the time for discharging cold water becomes long, and the user waits until hot water starts to flow out and reaches a desired temperature, and performs an operation such as checking by bringing the water into contact with the body. When the water in the shower is opened for showering, bathing, or the like, cold water is encountered, which is a little inconvenience in daily life, but may pose a threat to users who are ill-health, such as heart diseases, due to a temperature difference caused by the cold water that suddenly comes out.

The water hydrant, although the ultimate source of water in a household or building, exhibits a deviation in water consumption depending on its degree of utilization. Water shortages are also a serious worldwide situation and thus require practical solutions to achieve water savings. However, the cold water flowing directly into the hot water pipe of the sewage as in the above case is considered to be a waste of precious water resources. For this reason, a technology is being developed that enables cool water to be discharged through another piping, not a sewage, by the operation of the hydrant. In addition, there is an attempt to store hot water cooled in the hot water pipe and reuse the hot water in a toilet or the like. However, in order to send the cooled water in the hot water pipe discharged from the hydrant to the toilet for use, the valve device of the toilet needs to be changed accordingly, and the valve device of the conventional toilet is a method of discharging all the water in the tank at once, so that there is a problem that only a predetermined amount of water cannot be used.

The related prior documents are:

KR 20-0173732Y1 (21/12/1999)

KR 20-0338277Y1(2004, 1, 2)

KR 10-0670933B 1(1 month and 11 days 2007)

KR 20-0291200Y1 (9 and 24 months in 2002)

Disclosure of Invention

The invention aims to provide a valve opening and closing device of a toilet cistern, which can use a fixed amount of water even if the water in the cistern is not completely drained.

Another object of the present invention is to provide a system capable of discharging cold water in a hot water pipe from a hydrant and reusing the cold water as water stably by using the valve opening/closing device of a toilet tank.

The toilet valve opening/closing device of the present invention may include: a water tank 12, the water tank 12 storing water; a drain pipe 100 for draining the water in the tank to a toilet bowl by the drain pipe 100; a valve 200, wherein the valve 200 comprises an opening and closing plate 210 and a valve guide rod 220 for guiding the opening and closing plate 210, and the drainage pipe 100 is selectively opened and closed; a valve body 300, wherein the valve body 300 is combined with the water discharge pipe 100 to operate the valve 200; an opening means 500 formed to be able to move the valve guide rod 220 by a user's operation; a closure device 600, wherein the closure device 600 includes a main floating body 621 formed to be able to limit an amount of movement, and the main floating body 621 is moved downward by drainage caused by opening of the valve 200, thereby being able to convert the valve 200 to a closed state again.

As a related example of the present invention, the valve 200 may include: an opening/closing plate 210 having a circular plate shape; a valve guide rod 220, the valve guide rod 220 being formed to protrude from one side of the opening and closing plate 210; and a sealing member 230, wherein the sealing member 230 is installed at the other side of the opening and closing plate 210.

As a related example of the present invention, the seating frame 330 may include a guide hole 350 that guides so as to enable the valve guide bar 220 to move up and down in a linear direction.

As a related example of the present invention, the valve body 300 may include: a plurality of pillars 310 in a pillar shape; an attachment frame 320, the attachment frame 320 having a circular plate shape and being formed on the pillar 310; and a mounting frame 330, the mounting frame 330 being formed to be able to mount the attachment frame 300.

As an example of the present invention, the valve opening and closing device for a toilet may further include an overflow pipe 400, wherein the overflow pipe 400 is disposed at one side of the valve body 300, has an upper portion opened, and has a lower portion communicated with the valve body 300.

As a related example of the present invention, the opening apparatus 500 may include: a drawing wire 501; and a valve operator 510, the valve operator 510 moving the valve 200 upward by means of the drawing wire 501.

As a related example of the present invention, the valve operating body 510 may include: a contact rod 512, wherein one side of the contact rod 512 is connected to the traction wire 501; and a first hinge 511, the first hinge 511 being formed at the other side of the contact lever 512.

As a related example of the present invention, the closure device 600 may include: a first closing operation portion 610, the first closing operation portion 610 having a second hinge 611 rotatably combined with the valve body 300; and a second sealing operation unit 630, wherein the second sealing operation unit 630 operates the first sealing operation unit 610 by a force sequentially transmitted by the descending of the main buoyant body 621.

As a related example of the present invention, the first close operation portion 610 may include: a floating body 612, the second hinge 611 being formed at one side of the floating body 612, and a pressing plate 613 being formed at an upper surface thereof; and a first interference protrusion 614, the first interference protrusion 614 being disposed on the floating body 612 at an opposite side of the second hinge 611.

As a related example of the present invention, a water level measuring part 620 measuring a water level of water in the water tank may be further included, and the water level measuring part 620 may include: a transfer plate 622, the transfer plate 622 being positioned between the overflow pipe 400 and the main floating body 621, moving up and down by a predetermined amount, and selectively contacting the second sealing transfer part 630; a metering rotating body 623, the metering rotating body 623 being positioned at the main floating body 621, and rotating while contacting the overflow pipe 400; and a locking device 624, wherein the locking device 624 is composed of a fixing pin 624a, the fixing pin 624a is coaxially coupled to the metering rotator 623, and the operating plate 622 and the main floating body 621 are fixed according to the amount of rotation of the metering rotator 623.

As a related example of the present invention, the second close operation portion 630 may include: a bending portion 631, the bending portion 631 contacting the pressing plate 613; a contact portion 632, the contact portion 632 contacting the water level measuring portion 620; and an intermediate guide 633, wherein the intermediate guide 633 connects the bending portion 631 and the contact portion 632.

As an example related to the present invention, the toilet valve opening/closing device may further include an unlocking device 640 that is movable downward in a state where the opening/closing plate 210 is opened, and the unlocking device 640 may include: a third hinge 641; a second interference protrusion 642, the second interference protrusion 642 being formed at one side of the third hinge 641 to be in contact with the opening and closing plate 210; an unlocking rod 651, both ends of which are rotatably fixed; an unlocking plate 652 which protrudes in a plate shape on a side surface of the unlocking rod 651 and contacts the fixing pin; and an unlocking cam 653, the unlocking cam 653 being positioned at a lower portion of the unlocking rod 651, contacting an opposite-side end of the second interference projection 642 centering on the third hinge 641.

The present invention relates to a system for reusing hot water cooled in a hot water pipe having a toilet valve opening/closing device, comprising: a water supply pipe 21 connected to the tap water pipe 21; a hot water pipe 22 formed to receive hot water from a boiler; a water faucet device 4 formed to be connectable to the water supply pipe and the hot water pipe and supplying cold water, hot water, or mixed water; a discharge pipe 23, the discharge pipe 23 being formed to be connectable to the faucet device to discharge the cooled water in the hot water pipe; and a water tank 12, the water tank 12 is connected to the water supply pipe and the discharge pipe, and stores water supplied from the water supply pipe or the discharge pipe; a drain pipe 100 for draining the water in the tank to a toilet bowl by the drain pipe 100; a valve 200, wherein the valve 200 comprises an opening and closing plate 210 and a valve guide rod 220 for guiding the opening and closing plate 210, and the drainage pipe 100 is selectively opened and closed; a valve body 300 coupled to the drain pipe 100 to operate the valve 200; an opening means 500 formed to be able to move the valve guide rod 220 by a user's operation; and a closing apparatus 600, wherein the closing apparatus 600 includes a main floating body 621 formed to be capable of limiting a moving amount, and the main floating body 621 is moved downward by the drainage caused by the opening of the valve 200, thereby being capable of converting the valve 200 into a closed state again.

The valve opening and closing device of the present invention has an effect of closing the valve by discharging a predetermined amount of water.

The valve opening and closing device of the invention can embody the complete contact between the drain pipe and the valve because the valve moves vertically.

The valve opening and closing device of the present invention can close the valve by the first closing operation part accommodated in the valve body installation frame, and has a feature that the first closing operation part is operated by the water level measuring part.

Drawings

Fig. 1 is a conceptual view showing a system 1 for reusing hot water cooled in a hot water pipe by using a hydrant having a discharge function.

Fig. 2 is a perspective view of the toilet valve opening/closing device according to the present invention, showing a closed state.

Fig. 3 is a perspective view showing the toilet valve opening/closing device of fig. 2 in an open state.

Fig. 4 shows a closed state as a side surface of the toilet valve opening/closing device of the present invention.

Fig. 5 is an exploded perspective view of the toilet valve opening/closing device according to the present invention.

Fig. 6 is a sectional view showing an operation state of the toilet valve opening/closing device according to the present invention.

(description of reference numerals)

11: the toilet bowl 12: water tank

100: drain pipe 200: valve gate

210: the opening and closing plate 220: valve guide bar

221: opening 222: traction protrusion

223: the coupling projection 230: sealing element

300: the valve body 310: support post

320: the additional installation frame 330: placing frame

340: the inlet 350: guide hole

400: the overflow pipe 500: opening device

501: a traction wire 510: valve operation body

511: first hinge 512: contact rod

600: the closing means 610: first closed operation part

611: the second hinge 612: floating body

613: pressing plate 614: first interference bump

620: water level measuring portion 621: main floating body

622: operation plate 623: metering rotator

624: the locking device 630: second closed operation part

640: the unlocking device 641: third hinge

642: second interference bump 651: unlocking rod

652: unlocking plate 653: unlocking cam

Detailed Description

Hereinafter, a toilet valve opening/closing device and a system for recycling hot water cooled in a hot water pipe according to the present invention will be described in detail with reference to the accompanying drawings. In the following embodiments, the reference numerals are not limited to the indicated objects, and may be applied to other embodiments.

Fig. 1 is a diagram conceptually showing a system 1 for reusing hot water cooled in a hot water pipe by using a hydrant having a discharge function according to the present invention. The water supplied into the building is supplied to the toilet 11, the faucet device 4, the boiler 30, and the like through the water supply pipe 21. The faucet device 4 is connected not only to the water supply pipe 21 but also to a hot water pipe 22 from the boiler 30, and can be opened and closed in accordance with a desired water temperature by operating the adjustment knob 5. The water discharged through the water faucet device 4 is sent to the top shower 2 or the handheld shower 3 through selection of the switching handle 6, and the user can use the water as desired. The faucet device 4 may also be configured to discharge the cooled hot water in the hot water pipe 22 through the discharge pipe 23 by adjusting the handle 5 or another operation switch. The cooled hot water in the hot water pipe 22 sent out through the discharge pipe 23 can be stored in the water tank 12 of the toilet 11 and used in a predetermined amount by a toilet valve opening and closing device described later.

The toilet valve opening and closing device according to the present invention will be described in detail with reference to the following drawings.

Embodiment 1-1 the present invention relates to a toilet valve opening/closing device, specifically, comprising: a drain pipe 100, the drain pipe 100 communicating the toilet bowl 11 with the tank 12; a valve 200 for selectively opening and closing the drain pipe 100 by the valve 200; and a valve body 300 coupled to the drain pipe 300 to operate the valve 200.

Embodiment 1-2 the present invention relates to a toilet valve opening and closing device, and in connection with embodiment 1-1, the valve body 300 includes a support column 310 formed at an intermediate portion thereof.

The water tank 12 is connected to a discharge pipe 23 in addition to the water supply pipe 21 described above. The water tank 12 stores a predetermined amount of water, and the valve 200 is operated by a user operating the handle. Operation of valve 200 moves valve 200 from drain pipe 100 to supply a predetermined amount of water stored in tank 12 to toilet 11. After a predetermined amount of water is discharged, the valve 200 closes the drain pipe 100. The valve body 300 is formed to operate the internally disposed valve 200. In the valve body 300, a plurality of support columns 310 in a cylindrical shape are arranged in the vertical direction. A disk-shaped attachment frame 320 is formed on the support column 310. The attachment frame 320 is attached to the mounting frame 330. A plurality of inlet ports 340 are formed between the pillars 310. When the valve 200 is opened, the water is discharged to the drain pipe 100 through the input port 340.

Embodiment 2-1 this example relates to a toilet valve opening and closing device, and relates to embodiment 1-1, the valve 200 includes an opening and closing plate 210 having a circular plate shape, and a valve guide rod 220 formed to protrude from one side of the opening and closing plate 210.

Example 2-2 in this example, in connection with example 2-1, the sealing member 230 is located on the other side of the opening/closing plate 210.

Example 2-3 this example relates to example 2-1, and the valve guide rod 220 has a hollow shape and an opening formed in the upper portion.

Example 2-4 in this example, in connection with example 2-1, the opening/closing plate 210 and the valve guide rod 220 may be formed in an integrated type or a separate type.

Examples 2-1, 2-2, 2-3 and 2-4 are described with reference to FIG. 4. The valve 200 is moved upward in a linear direction by a user's operation, and is automatically moved downward in the linear direction at a predetermined time point. Specifically, the valve 200 may include an opening and closing plate 210 having a circular plate shape, and a valve guide rod 220 vertically attached to an upper portion of the opening and closing plate 210. A sealing member 230 may be installed at a lower portion of the opening and closing plate 210. The valve guide rod 220 is inserted into a guide hole 350 formed in the mounting frame 330 of the valve body 300 and can move up and down in a linear direction.

The valve guide rod 220 is opened at the top, and has a hollow interior. Although not shown in the drawings, a weight may be added to the hollow portion. As a result, buoyancy may be reduced, and the valve 200 may be easily moved downward and easily closed. The sealing member 230 may be formed of a rubber material in a plate shape. The sealing member 230 is in contact with the drain pipe 100 to maintain water-tightness. The opening and closing plate 210 and the guide rod 220 may be formed in a separate type to ensure ease of assembly. As another example, the opening and closing plate 210 may be formed in a circular plate or polygonal plate shape. As another example, the lower portion of the opening and closing plate 210 may be formed in a staggered layer, and the staggered layer may be inserted into the drain pipe 100.

Example 3-1 this example is related to example 1-1, and may include an overflow pipe 400 having an upper portion opened and a lower portion communicating with the valve body 300, on a side surface of the valve body 300.

Example 3-1 is explained with reference to FIG. 4. The overflow pipe 400 is formed to limit the maximum amount of water in the tank 12. That is, in order to prevent the overflow of the water supplied to or discharged from the tank 12 excessively, an overflow pipe 400 having an opened upper portion is formed inside the tank 12. The water overflowing the upper portion of the overflow pipe 400 flows into the toilet bowl 11 regardless of whether the aforementioned valve 200 is operated. That is, the lower portion of the overflow pipe 400 is combined with the valve body 300. The overflow tube 400 may be formed in the form of an upright linear tube.

Example 4-1 the valve opening and closing device of this example, which is related to example 2-1, includes an opening device 500, and the opening device 500 draws the valve guide rod 220 upward to open the drain pipe 100.

Embodiment 4-2 in this example, in connection with embodiment 4-1, the opening means 500 includes a pull wire 501, a valve operating body 510 which moves the valve 200 upward.

Embodiment 4-3 in this example, in connection with embodiment 4-2, one side of the valve operating body 510 is combined with the first hinge 511, the other side is combined with the drawing wire 501, and the middle side includes a contact lever 512, and the contact lever 512 is formed to be able to contact with the drawing projection 222 of the valve guide bar 220.

Examples 4-1, 4-2, and 4-3 relate to an open apparatus of the present invention, and are explained with reference to FIG. 4. The opening means is formed such that the valve 200 can be opened by operating a handle located outside the water tank 12. The handle operates the valve operating body 510 by means of the pull wire 501. Specifically, one side of the valve operating body 510 is rotatably coupled to the first hinge 511, and the other side is coupled to the pull wire 501. That is, the valve operating body 510 can be rotated by the traction force of the traction wire 501. A contact rod 512 is formed in the middle of the valve operating body 510. The contact rod 512 is in contact with the drawing projection 222 protruded on the valve guide bar 220. That is, the rotation of the valve operating body 510 pushes the drawing protrusion 222 to move the valve guide rod 220 upward, and the opening and closing plate 210 coupled to the valve guide rod 220 moves upward to open the drain pipe 100. The water is discharged as the water discharge pipe 100 is opened. As another example, the pull wire 501 connected to the handle may be directly coupled to the valve guide bar 220. Further, the shaft coupled to the handle may directly move the valve guide rod 220 in the upper direction by a power transmission device.

Embodiment 5-1 the toilet valve opening and closing device of this embodiment is related to embodiment 2-1, and includes a closing device 600, and the closing device 600 operates the valve guide rod 220 downward to close the discharge port.

Example 5-2 in this example, in association with example 5-1, the closure device 600 includes: a second hinge 611, the second hinge 611 being rotatably combined with the valve body 300; and a first blocking operating part 610, wherein the first blocking operating part 610 has a floating body 612 and a pressing plate 613 formed at one side thereof, and a first interference protrusion 614 that interferes with the valve guide rod coupling protrusion 223 formed at the other side thereof.

Example 5-3 in this example, in connection with example 5-2, the floating body 612 may be formed in a container shape with an open lower portion.

Examples 5-1, 5-2 and 5-3 are described with reference to FIGS. 5 and 6. The first closed operation portion 610 is accommodated in the seating frame 330 of the valve body 300, and the first closed operation portion 610 and the seating frame 330 are coupled by a second hinge 611. The first closing operation portion 610 has a first interference protrusion 614 formed at one side thereof centering on the second hinge 611 and a floating body 612 formed at the other side thereof. The first interference protrusion 614 is caught or separated from the coupling protrusion 223 protruded at the side of the valve guide bar 220. The floating body of the first blocking operation portion 610 forms an air bag therein. Therefore, the first interference protrusion 614 of the first blocking operation portion 610 is hung to the coupling protrusion 223 of the valve guide bar 220 to be ascended in the water by buoyancy. In the state where the valve 200 ascends, the coupling projection 223 of the valve guide rod 200 is caught by the first interference projection 614 to maintain the ascended state. In contrast, if the first interference protrusion 614 is moved, the valve guide bar 220 is moved downward, being disengaged from the coupling protrusion 223. Thereby reflecting the valve closed state. The structure for operating the first sealing operation unit 610 will be described with reference to a second sealing operation unit 630 described later.

Embodiment 5-4 the toilet valve opening and closing device of this embodiment is related to embodiment 5-2, and includes a bent portion 631 contacting the pressing plate 613, a contact portion 632 contacting the water level measuring portion 620, and a second sealing operation portion 630 having an intermediate guide portion 633. The second close operation portion 630 is in sliding contact with the valve body 300.

Examples 5 to 4 relate to the second closing operation section 630 operating the first closing operation section 610. The details will be described with reference to fig. 5 and 6. When the bent portion 631 of the second sealing operation portion 630 presses the pressing plate 613 of the first sealing operation portion 610, the first sealing operation portion 610 rotates. The second closing operation portion 630 has a bent portion 631 formed on one side (upper side), a contact portion 632 formed on the other side (lower side), and an intermediate guide portion 633 formed on the intermediate side. The contact portion 632 is moved downward by the water level measuring portion 620. The intermediate guide 633 of the second sealing operation unit 630 is coupled to the mounting frame 330 and guided to move up and down. The water level measuring unit 620 measures the degree of water level decrease, and operates only when the water level is decreased by a predetermined amount. This will be specifically disclosed in the following description.

Embodiment 5-5 in this example, in association with embodiment 5-4, the water level measuring part 620 includes: a main floating body 621 moving along the overflow pipe 400, floating on the water surface of the water tank; a transfer plate 622, the transfer plate 622 being positioned between the overflow pipe 400 and the main floating body 621, moving up and down by a predetermined amount, and selectively contacting the second sealing transfer part 630; a metering rotator 623, the metering rotator 623 being positioned on the main floating body 621 and rotating in contact with the overflow pipe 400; and a locking device 624, wherein the locking device 624 is formed of a fixing pin 624a, and the fixing pin 624a is coaxially coupled to the rotary metering body 623 and fixes the operation plate 622 and the main floating body 621 according to the amount of rotation of the rotary metering body 623.

Embodiment 5-5 relates to a water level measuring unit 620, and is explained with reference to fig. 5 and 6. A typical flush valve has a condition that is limited to a situation where the water inside the tank is completely empty. In contrast, the valve of the present invention has a structure that can be closed even in water. In addition, the water level can be discharged by a predetermined amount even if the water level fluctuates. This will be explained in detail below. The main floating body 621 is always located on the water surface and moves up and down as the water level varies. The main floating body 621 is coupled to the overflow pipe 400 and vertically moves, and forms a pinion (a metering rotating body 623) engaged with a rack formed in the overflow pipe 400. That is, as the water level fluctuates downward, the pinion gear of the main floating body rotates. The pinion of the main floating body rotates to operate the locking device 624. The pinion gear is internally provided with a cam to operate a fixing pin 624a of the locking device. The fixing pin 624a of the locking device is combined with the operation plate 622. The operation plate 622 operates the second closed operation portion 630. The operation plate 622, if combined with the locking device 624 of the main floating body 621, moves downward together. That is, the lower portion of the operation plate 622 operates the second close operation portion 630.

Embodiment 5-6 in this example, in relation to embodiment 5-4, the unlocking device 640 is provided with a third hinge 641 formed in the middle, a second interference projection 642 formed on one side of the third hinge 641 and coming into contact with the opening/closing plate 210, and the other side of the third hinge 641 is formed so as to be able to release the locking device 624.

Examples 5 to 6 are described with reference to fig. 5 and 6. When the opening/closing plate 210 needs to be moved from the upper portion to the lower portion, the coupling state between the operation plate 622 and the main floating body 621 should be released. To meet such a demand, an unlocking means 640 is formed. The second interference protrusion 642 contacting the opening and closing plate 210 is rotated by the third hinge 641 and the other side operates the unlocking device 640.

Embodiment 5 to 7 in the toilet valve opening and closing device of this embodiment, in connection with embodiment 5 to 6, the unlocking device 640 may include: the unlocking rod 651 is fixed at two ends of the unlocking rod 651 along the overflow pipe in a rotatable manner; an unlocking plate 652 which protrudes in a plate shape on a side surface of the unlocking rod 651 and contacts the fixing pin; an unlocking cam 653, the unlocking cam 653 being located at a lower portion of the unlocking rod 651, contacting an opposite-side end of the second interference protrusion 642 centering on the third hinge 641.

Embodiments 5 to 7 relate to the operation of the unlocking device 640, and are explained with reference to fig. 5 and 6. The unlocking means 640 includes an unlocking cam 653 that contacts a projection formed on the opposite side of the second interference projection 642. The unlocking plate 652 is combined with the unlocking bar 651. The unlocking rod 651 is in the form of a rod formed to be long in the longitudinal direction along the overflow pipe 400. On both sides of the unlocking bar 651, unlocking plates 652 elongated in the longitudinal direction are formed. The unlocking plate 652 operates the aforementioned fixing pin 624, and releases the engagement between the operating plate 622 and the main float 621.

Claims (10)

1. A toilet valve opening/closing device comprising:

a water tank (12), the water tank (12) storing water;

a drain pipe (100), wherein the drain pipe (100) drains the water in the water tank to a toilet bowl;

a valve (200) which is provided with an opening/closing plate (210) and a valve guide rod (220) for guiding the opening/closing plate (210) and which selectively opens and closes the drain pipe (100);

a valve body (300), wherein the valve body (300) is combined with the water discharge pipe (100) to operate the valve (200);

an opening means (500), the opening means (500) being formed to be able to move the valve guide rod (220) by means of a user's operation;

a closing device (600) including a main floating body (621) formed to be capable of limiting a movement amount, the main floating body (621) moving downward due to drainage caused by opening of the valve (200), thereby being capable of converting the valve (200) to a closed state again; and

a water level measuring part (620), the water level measuring part (620) measuring a water level of the water in the water tank (12);

the closure device (600) comprises:

a first close-running part (610), the first close-running part (610) having a second hinge (611) rotatably combined with the valve body (300); and

a second blocking operation unit (630) for operating the first blocking operation unit (610) by means of a force sequentially transmitted by the descending of the main floating body (621),

the first closed running part (610) includes:

a floating body (612) in which the second hinge (611) is formed on one side of the floating body (612) and a pressing plate (613) is formed on the upper surface of the floating body (612); and

a first interference protrusion (614), the first interference protrusion (614) being disposed on the floating body (612) at an opposite side of the second hinge (611),

the second closed running part (630) includes:

a bent portion (631), the bent portion (631) contacting the pressing plate (613);

a contact portion (632), the contact portion (632) contacting the water level measuring portion (620); and

and an intermediate guide section (633), wherein the intermediate guide section (633) connects the bent section (631) and the contact section (632).

2. The toilet valve opening/closing device according to claim 1,

the valve (200) comprises:

an opening/closing plate (210) having a circular plate shape;

a valve guide bar (220), the valve guide bar (220) being formed to protrude from one side of the opening and closing plate (210); and

and a sealing member (230), wherein the sealing member (230) is installed on the other side of the opening and closing plate (210).

3. The toilet valve opening/closing device according to claim 1,

the valve body (300) includes:

a plurality of pillars (310) in a pillar shape;

an attachment frame (320), the attachment frame (320) having a circular plate shape and being formed on the pillar (310); and

a placement frame (330), the placement frame (330) being formed to be capable of placing the attachment frame (320).

4. The toilet valve opening/closing device according to claim 3,

the seating frame (330) includes a guide hole (350) that guides so as to enable the valve guide bar (220) to move up and down in a linear direction.

5. The toilet valve opening/closing device according to claim 4,

the overflow valve (400) is arranged on one side of the valve body (300), the upper part of the overflow valve (400) is open, and the lower part of the overflow valve is communicated with the valve body (300).

6. The toilet valve opening/closing device according to claim 1,

the opening device (500) comprises:

a pull wire (501); and

a valve operating body (510), the valve operating body (510) moving the valve (200) upward by means of the traction wire (501).

7. The toilet valve opening/closing device according to claim 6,

the valve operating body (510) includes:

a contact rod (512), one side of the contact rod (512) is connected to the traction wire (501); and

a first hinge (511), the first hinge (511) being formed at the other side of the contact lever (512).

8. The toilet valve opening/closing device according to claim 5,

the water level measuring part (620) includes:

a transfer plate (622) which is positioned between the overflow pipe (400) and the main floating body (621), moves up and down by a predetermined amount, and selectively contacts the second closing transfer part (630);

a metering rotating body (623), the metering rotating body (623) being positioned on the main floating body (621), and rotating while contacting the overflow pipe (400); and

and a locking device (624), wherein the locking device (624) is configured by a fixing pin (624a), the fixing pin (624a) is coaxially coupled to the metering rotating body (623), and the operating plate (622) and the main floating body (621) are fixed according to the amount of rotation of the metering rotating body (623).

9. The toilet valve opening/closing device according to claim 1,

further comprising an unlocking device (640) which can move downwards when the opening and closing plate (210) is in an open state,

the unlocking device (640) includes:

a third hinge (641);

a second interference protrusion (642) formed at one side of the third hinge (641) to be in contact with the opening and closing plate (210);

an unlocking rod (651), both ends of the unlocking rod (651) being rotatably fixed;

an unlocking plate (652) which protrudes in a plate shape on a side surface of the unlocking rod (651) and is in contact with a fixing pin; and

an unlocking cam (653) located at a lower portion of the unlocking rod (651) to contact an opposite side end of the second interference protrusion (642) centering on the third hinge (641).

10. A system for recycling hot water cooled in a hot water pipe having a toilet valve opening/closing device, comprising:

a water supply pipe (21), the water supply pipe (21) being connected to a tap water pipe;

a hot water pipe (22), the hot water pipe (22) being formed to be able to receive a supply of hot water from a boiler;

a water faucet device (4), the water faucet device (4) being formed to be connectable to the water supply pipe and the hot water pipe and supplying cold water, hot water, or mixed water;

a discharge pipe (23), the discharge pipe (23) being formed so as to be connectable to the faucet device and discharging the cooled water in the hot water pipe; and

a water tank (12), wherein the water tank (12) is connected to the water supply pipe and the discharge pipe, and stores water supplied from the water supply pipe or the discharge pipe;

a drain pipe (100), wherein the drain pipe (100) drains the water in the water tank to a toilet bowl;

a valve (200) which is provided with an opening/closing plate (210) and a valve guide rod (220) for guiding the opening/closing plate (210) and which selectively opens and closes the drain pipe (100);

a valve body (300), wherein the valve body (300) is combined with the water discharge pipe (100) to operate the valve (200);

an opening means (500), the opening means (500) being formed to be able to move the valve guide rod (220) by means of a user's operation;

a closing device (600) including a main floating body (621) formed to be capable of limiting a movement amount, the main floating body (621) moving downward by drainage water caused by opening of the valve (200), thereby being capable of converting the valve (200) into a closed state again; and

a water level measuring part (620), the water level measuring part (620) measuring a water level of water in the water tank (12),

the closure device (600) comprises:

a first close-running part (610), the first close-running part (610) having a second hinge (611) rotatably combined with the valve body (300); and

a second blocking operation unit (630) for operating the first blocking operation unit (610) by means of a force sequentially transmitted by the descending of the main floating body (621),

the first closed running section (610) includes:

a floating body (612) in which the second hinge (611) is formed on one side of the floating body (612) and a pressing plate (613) is formed on the upper surface of the floating body (612); and

a first interference protrusion (614), the first interference protrusion (614) being disposed on the floating body (612) at an opposite side of the second hinge (611),

the second closed running part (630) includes:

a bending part (631), the bending part (631) contacting the pressing plate (613);

a contact portion (632), the contact portion (632) contacting the water level measurement portion (620); and

and an intermediate guide section (633), wherein the intermediate guide section (633) connects the bent section (631) and the contact section (632).

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