JP2007177393A - Water supply device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flush valve device capable of forcedly stopping a water supply by an operation of a user partway through a duration of the water supply after the water supply has been started by the operation of the user. <P>SOLUTION: In the flush valve device 10, the second head race 60 is provided in addition to the first head race 20 and, at the same time, an emergency stop valve 62 which is usually maintained in a closed state and is opened on the basis of manually operated is provided on the second head race 60. An amount of introduction of water to a pressure room 18 is increased by its forced valve opening to open a main valve 14, and the emergency stop of the water supply can be made. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a water supply apparatus suitable as a flush valve apparatus for supplying toilet flush water.

2. Description of the Related Art Conventionally, a flush valve device that supplies toilet flush water to a toilet or urinal (hereinafter simply referred to as a toilet) after use is known (for example, Patent Document 1 below).
Conventionally, this flush valve device has (a) a water supply channel, (b) a main valve that opens and closes the water supply channel, and (c) is formed behind the main valve, and presses the main valve in the valve closing direction by the pressure of water. A pressure chamber that communicates with the pressure chamber upstream of the main valve in the water supply channel and the pressure chamber, and (e) a water conduit that introduces water in the water supply channel into the pressure chamber, and (e) water in the pressure chamber in the main water channel. It has a structure comprising a water drainage channel that is drawn to the downstream portion of the valve, and (f) an activation valve that opens the water drainage channel to open the main valve and starts water supply.
In this flush valve device, when the user operates the operation unit, the start valve opens to open the water drainage path. Then, the water in the pressure chamber is extracted to the downstream portion of the main valve in the water supply channel through the water drainage channel, and the pressure in the pressure chamber disappears.
Here, the main valve opens based on the water supply pressure upstream of the water supply channel, and opens the water supply channel to supply toilet flushing water.

On the other hand, when the main valve is opened, the water in the upstream portion of the water supply channel flows into the pressure chamber through the water conduit, and as a result, the pressure in the pressure chamber gradually increases, and when the pressure reaches a predetermined pressure, the main valve automatically The water supply is stopped.
That is, in the case of the flash valve device, the user starts supplying the toilet flushing water by operating, and thereafter the main valve is automatically closed when the set amount of toilet flushing water is supplied and the water supply is stopped.

  Normally, in this flash valve device, the operation unit for the user to start water supply is a manual operation unit, but the sensor-type operation unit, that is, the hand or human body held by the user is detected without contact. In addition, a type of supplying toilet flush water based on detection or non-detection of the hand or human body that is held up is also known.

By the way, in a toilet bowl (especially a toilet bowl) in which a flush valve device is installed, the toilet paper may be clogged by flowing tissue paper or the like, and drainage may not be performed well.
In this case, the user may operate the flash valve device again in order to eliminate the clogging.
At this time, if the clogging is not eliminated by re-supplying water, the water flowing from the flush valve device into the toilet may overflow from the toilet.
In the case of the conventional flush valve device, once the water supply is started by operating the operation unit, the water supply does not stop until the preset amount of toilet flushing water has been supplied, and the user thinks that it has been “shut down”. This is because it is not possible to stop the water supply.

When the operation unit is a sensor-type operation unit, when the user moves his body to investigate the cause of the clogging, the sensor mistakenly detects the hand or human body, and the cleaning water is unintentionally supplied. May be started. In such a case, the same problem as described above occurs.
In the above, the case of a toilet was mainly described, but the situation is almost the same for a urinal.
In such a case, it is not unthinkable to stop the water by operating a stop cock provided near the flush valve device, but if you try to stop the water at the stop cock, use a tool to stop the water. If it takes a long time to stop the water supply and wants to stop the water supply urgently, it is not possible to stop with the water stop cock.

As mentioned above, the flash valve device that supplies toilet flush water has been described, but there is a self-closing faucet (self-stop faucet) that automatically stops water supply after supplying a set amount of water. Even after the water supply is started by the user's operation at the faucet, the water supply is not stopped until the set amount of water has been supplied, so this can be done even if the user wants to stop the water in the meantime. However, the same kind of problem as the flash valve device is inherent.
The present invention has been devised in order to solve the above-mentioned problems peculiar to a water supply device that automatically stops water supply when a user has supplied a predetermined amount of water after starting water supply.

JP-A-4-68131

  The present invention is based on the above circumstances, and provides a water supply device that can forcibly stop water supply by a user's operation in the middle of continuing water supply after starting water supply by the user's operation. It was made as a purpose.

  Thus, according to the first aspect, (a) a water supply channel, (b) a main valve that opens and closes the water supply channel, and (c) a main valve formed behind the main valve, A pressure chamber that presses in the valve closing direction, and (d) a water conduit that communicates the upstream portion of the main valve in the water supply passage with the pressure chamber, and introduces water in the water supply passage into the pressure chamber; ) A water drainage channel for extracting water from the pressure chamber to the downstream part of the main valve in the water supply channel, and (f) a start valve for opening the water drainage channel to open the main valve and starting water supply; In the water supply apparatus comprising: the water conduit is normally kept in a throttled state, and the water guide passage is switched from the throttled state to the wide opening state based on a user's operation to supply water to the pressure chamber. An emergency stop valve that increases the amount of introduction and stops water supply in an emergency, and an emergency stop operation unit that forcibly operates the emergency stop valve to the wide opening side are provided.

  According to a second aspect of the present invention, in the first aspect of the present invention, the first water conduit in which the water conduit passes through the main valve so that the upstream portion of the main valve in the water supply passage communicates with the pressure chamber, and the main valve And a second water conduit that communicates the upstream portion and the pressure chamber, and the emergency stop valve opens and closes the second water conduit to restrict the water conduit. It is characterized by switching from a state to a wide opening state.

  According to a third aspect of the present invention, in the second aspect of the present invention, the flow passage area of the second water conduit is made larger than the flow passage area of the first water conduit.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the flush valve device is configured to supply toilet flush water.

Effects and effects of the invention

As described above, the present invention maintains the water conduit in a normally throttled state, and increases the amount of water introduced into the pressure chamber by switching the throttle channel from a throttled state to a wide opening state based on a human operation. The water supply device is provided with an emergency stop valve that urgently stops water supply and an emergency stop operation section that forcibly operates the water supply to the wide opening side.
According to the present invention, when the user wants to stop water on the way after the water supply start operation, the user can reliably stop the ongoing water supply by operating the emergency stop operation unit. It is possible to solve the problems that have conventionally occurred in the water supply apparatus.

  In the present invention, the first water conduit passing through the main valve and communicating the upstream portion of the main valve and the pressure chamber in the water supply passage, and the upstream portion and the pressure chamber bypassing the main valve are connected to the water conduit. It can comprise including the 2nd water conduit which makes it communicate. In this case, the emergency stop valve can be switched from the throttled state to the wide opening state by opening and closing the second water conduit (Claim 2).

In this case, the channel area of the second conduit can be made larger than the channel area of the first conduit (Claim 3).
In this way, a large amount of upstream water in the water supply channel can be introduced into the pressure chamber quickly by opening the second water conduit using the emergency stop valve. The water supply can be stopped by closing the valve.

  The present invention can be applied to various water supply devices that automatically stop supplying water after supplying a set amount of water after the start of water supply, and is particularly suitable for application to a flush valve device that supplies toilet flushing water. (Claim 4).

Next, embodiments of the present invention will be described in detail with reference to the drawings.
In FIG. 1, 10 is a flush valve device as an example of a water supply device of the present invention (here, a flush valve device for a toilet), 12 is a water supply passage, 14 is a piston type main valve that opens and closes the water supply passage 12. is there.
The main valve 14 is normally seated on the valve seat 16, and the upstream portion 12A and the downstream portion 12B in the water supply channel 12 are blocked.
In this flush valve device 10, the main valve 14 opens away from the valve seat 16 in the upward direction in the figure, whereby the upstream portion 12A and the downstream portion 12B in the water supply channel 12 are in communication with each other, and the upstream portion 12A Water flows into the downstream portion 12B and is supplied to the toilet (toilet) as washing water.

A pressure chamber 18 is formed behind the main valve 14 (upper side in the figure), and the main valve 14 is normally pressed downward in the figure by the pressure of water in the pressure chamber 18 to close the valve. Maintained.
The main valve 14 is provided with a first water conduit 20 formed of a small hole having a small flow path area through which the water in the upstream portion 12A in the water supply channel 12 is introduced into the pressure chamber 18 so as to penetrate the main valve 14. Yes.
On the other hand, from the pressure chamber 18, a drainage channel 22 for extracting the water in the pressure chamber 18 to the downstream portion 12 </ b> B in the water supply channel 12 extends through the main valve 14, and tilts on the drainage channel 22. The starting valve 24 is provided.
The starting valve 24 has a shaft portion 26 and a valve portion 28. Normally, the valve portion 28 is seated on the valve seat 32 by a downward biasing force of the spring 30 in the figure, and the drainage passage 22 Is kept closed.
Here, the spring 30 is interposed between the main valve 14 and the valve portion 28 of the start valve 24.

Reference numeral 34 denotes an operation lever for performing a water supply start operation. In the flash valve device 10, when the operation lever 34 is tilted, the drive shaft 36 is protruded leftward in the figure and the shaft portion 26 of the start valve 24 is directed leftward in the figure. Pushing and tilting the start valve 24.
Here, the water drainage channel 22 is opened, and the water in the pressure chamber 18 is extracted to the downstream portion 12B of the water supply channel 12.

Reference numeral 38 denotes a stopper shaft, and the stopper shaft 38 defines an ascending end of the main valve 14 by an abutting action on the main valve 14. That is, the lift-up amount of the main valve 14 upward in the figure is defined.
The stopper shaft 38 has a large-diameter portion 40, a male screw is formed on the outer peripheral surface thereof, and the male screw is screwed to the female screw of the body 42 in the flash valve device 10.
The stopper shaft 38 is adjusted in its vertical position in the figure by changing its screwing position. That is, the lift-up amount of the main valve 14 is adjusted.

44 is a water stop cock, and the water stop cock 44 has a water stop valve 46 and a holding body 48 for holding the water stop valve 46. The holding body 48 is screwed and assembled to the body 50 in the water stop cock 44.
The water stop valve 46 has a valve portion 51 and a shaft portion 52, and the water supply passage 12 is closed when the valve portion 51 is seated on the valve seat 54.
The water stop valve 44 rotates the water stop valve 46 through the operation opening 56, whereby the water stop valve 46 is moved forward or backward in the vertical direction in the figure by screw feed at a screw coupling portion with the holding body 48. The flow rate of the water flowing through the water supply channel 12 is adjusted or the water is stopped.

In this flush valve device 10, when the operation lever 34 is tilted as shown in FIG. 2, the start valve 24 opens, and the water in the pressure chamber 18 passes through the water drainage channel 22 to the downstream portion 12 </ b> B of the water supply channel 12. Flows out.
Here, when the pressure in the pressure chamber 18 disappears, the main valve 14 is opened upward in the drawing by the feed water pressure of the upstream portion 12A in the feed water channel 12, and the feed water channel 12 is opened. Here, water flows from the upstream portion 12A to the downstream portion 12B, and is supplied to the toilet as washing water for the toilet.

  On the other hand, after the main valve 14 is opened, the water in the upstream portion 12 </ b> A flows into the pressure chamber 18 through the first conduit 20. As a result, the pressure in the pressure chamber 18 gradually increases, and when the pressure in the pressure chamber 18 reaches a predetermined pressure, the main valve 14 is closed by the pressing action of the water in the pressure chamber 18 to stop water supply.

As shown in FIG. 3, the flush valve device 10 is also provided with a bypass pipe 58 that communicates the pressure chamber 18 and the upstream portion 12 </ b> A of the water supply passage 12. The second water conduit 60 is formed to bypass the main valve 14 and introduce it into the pressure chamber 18.
The second conduit 60 constitutes a conduit for introducing the water of the upstream portion 12A into the pressure chamber 18 together with the first conduit 20, and here, the flow passage area of the second conduit 60 is the first conduit. The channel area of the water channel 20 is increased.

An emergency stop valve 62 for forcibly stopping water supply is provided on the second water conduit 60.
The emergency stop valve 62 is seated on a valve seat 64 formed on a valve housing 63 constituting a part of the bypass pipe 58 via a seal member 66, as shown in a partially enlarged view of FIG. However, it has a valve portion 68 and a shaft portion 70 that are separated from each other, and is held by the valve housing 63 so as to be movable in the axial direction.
A spring 72 for energizing the emergency stop valve 62 in the valve closing direction, specifically upward in the figure, is accommodated in the valve housing 63. The emergency stop valve 62 is normally attached to the spring 72. Based on the force, the valve portion 68 is kept seated on the valve seat 64, that is, the valve is closed.

The emergency stop valve 62 is integrally provided with a push button type emergency stop operation unit 74 for performing an emergency stop operation. Here, the emergency stop operating portion 74 is protruded upward in the drawing from the opening of the valve housing 63, and when the emergency stop operating portion 74 is pushed downward in the drawing, the valve portion 68 of the emergency stop valve 62 is turned on. The emergency stop valve 62 is opened away from the seat 64 downward in the figure.
Here, the second water conduit 60 is opened, the upstream portion 12A in the water supply channel 12 and the back pressure chamber 18 are in communication with each other via the second water conduit 60, and the water in the upstream portion 12A It is introduced into the back pressure chamber 18 through the two water conduits 60.

That is, the emergency stop valve 62 is normally maintained in a closed state, and therefore, the water conduit constituted by the first water conduit 20 and the second water conduit 60 is normally in a state where the flow path is restricted. When the emergency stop valve 62 is opened and the second water conduit 60 is opened, the water conduit composed of the first water conduit 20 and the second water conduit 60 is switched to the wide opening state, and the water supply channel 12 is opened. A large amount of water in the upstream portion 12 </ b> A is introduced into the back pressure chamber 18.
Specifically, when the emergency stop valve 62 is in a closed state, the water in the upstream portion 12A in the water supply passage 12 is provided through the main valve 14 after the main valve 14 is opened as shown in FIG. It flows into the pressure chamber 18 only through the first water conduit 20 having a small channel area. Accordingly, the opened main valve 14 is slowly closed over time, and during that time, a set amount of toilet flush water is supplied to the toilet.

On the other hand, when the emergency stop operation unit 74 is pushed downward in the drawing to open the emergency stop valve 62 during the water supply after the start of water supply, the water in the upstream portion 12A in the water supply channel 12 is here. Since not only the first water conduit 20 but also the second water conduit 60 having a large flow path area flows into the pressure chamber 18, the inflow water flow into the pressure chamber 18 as a whole rapidly increases, and therefore the main valve 14 Immediately closes the valve to stop water supply.
Therefore, after the water supply is started, the user can operate the emergency stop operation unit 74 to open the emergency stop valve 62 while the water supply is continued, thereby forcibly stopping the ongoing water supply.

  As described above, according to the present embodiment, when the user wants to stop water on the way after the water supply start operation, the emergency stop operation unit 74 is operated to ensure that the water supply is continuously continued. The flash valve device 10 can solve the problems that have conventionally occurred.

In the present embodiment, the first water conduit 20 that connects the upstream portion 12A of the main valve 14 in the water supply passage 12 and the pressure chamber 18 through the main valve 14 and the main valve 14 is bypassed upstream. Since the second water conduit 60 that communicates the portion 12A and the pressure chamber 18 is included, the emergency stop valve 62 is opened and closed from the state where the water conduit is narrowed by opening and closing the second water conduit 60. It can be switched to the degree state.
In this case, since the flow area of the second water conduit 60 is larger than the flow area of the first water conduit 20, the second water conduit 60 is opened by the emergency stop valve 62, so that A large amount of water in the upstream portion 12A can be quickly and rapidly introduced into the pressure chamber 18, and the main valve 14 can be quickly closed to stop water supply.

In the above example, as shown in FIG. 5 (A), the first water conduit 20 that penetrates the main valve 14 as a water conduit and the flow area of the first water conduit 20 that bypasses the main valve 14 are larger. A large second water conduit 60 is provided, and an emergency stop valve 62 for opening and closing the second water conduit 60 is provided on the second water conduit 60. The opening of the emergency stop valve 62 opens the normal water conduit from a narrowed state. In this example, switching to the opening state is performed. As shown in FIG. 5B, the flow area of the first water conduit 20 is increased, and the flow area of the second water conduit 60 is decreased. Then, the emergency stop valve 62 is provided on the first water conduit 20 side, and the first water conduit 20 is opened and closed by the emergency stop valve 62, so that the water conduit is switched from the normally throttled state to the wide opening state. It is also possible to do so.
In this case, the second water conduit 60 is in a state where the upstream portion 12A of the water supply passage 12 is always in communication with the pressure chamber 18, and the main valve 14 is opened under the state where the emergency stop valve 62 is not opened. The introduction of the water pressure chamber 18 </ b> A in the upstream portion 12 </ b> A later is performed through the second water conduit 60.

On the other hand, according to the example of (C), only the water conduit 76 that bypasses the main valve 14 is provided, and on this water conduit 76, the flow passage area of the water conduit 76 is reduced from a normal state to a wide area at the time of emergency stop. It is also possible to provide an emergency stop valve that switches to the opening state.
In this case, the water conduit 76 is bifurcated in the middle, and an emergency stop valve is provided on one of the branches, and one of the branch paths can be opened and closed by the emergency stop valve.

(D) shows yet another example. In this example, a water conduit 76 is provided in a form penetrating the main valve 14, an emergency stop valve is provided on the water conduit 76, and the emergency stop valve This is an example in which the flow passage area of the water conduit 76 is switched from a normally narrowed state to a wide opening state.
Even in this case, the water conduit 76 is bifurcated in the middle, and an emergency stop valve is provided on either side so that the emergency stop valve can be opened and closed. The water channel 76 can be switched from a normally throttled state to a wide opening state.

In the above example, the emergency stop operation unit is a manual type, but the emergency stop operation unit can be a sensor type operation unit.
That is, when the user operates the hand over, this is detected in a non-contact manner, and based on the detection of the hand over, the emergency stop valve is opened from a state where the flow path such as the closed state is closed to a valve opening state, etc. Can be switched to a state.
In this case, the emergency stop valve is advantageously configured as an electrically driven valve such as a solenoid valve.

FIG. 6 shows an example in which the emergency stop operation unit is a sensor-type operation unit.
In the flash valve device 10 of this example, the reference numeral 80 denotes a housing 80 for automatically starting the water supply by opening the main valve when the human body is detected and then entering the non-detection state, that is, for starting the water supply. 82 is a sensor-type water supply start operation unit provided on the front side, 82 is for detecting that this is contactless when the user operates the hand and opens the main valve to forcibly start supplying toilet flush water It is a water supply start operation part.
Similarly, 84 is a sensor-type emergency stop operation unit, which is also operated by a wide opening, for example, when the user holds the hand over and detects it in a non-contact manner and forcibly opens the emergency stop valve. Stop water supply in the middle of an emergency.

Although the embodiments of the present invention have been described in detail above, these are merely examples.
For example, the present invention can be applied not only to a flush valve device of a urinal but also to a self-closing faucet (self-stop faucet) as described above, and various modifications are made without departing from the spirit of the invention. Can be configured.

It is a front view which cuts and shows the flash valve apparatus which is one Embodiment of this invention. It is an effect | action explanatory drawing of the flash valve apparatus of the embodiment. It is the figure which expanded and showed the principal part of the flash valve apparatus of the embodiment. It is action | operation explanatory drawing of the principal part shown in FIG. It is a schematic diagram explaining other embodiment of this invention. It is a figure which shows other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Flash valve apparatus 12 Water supply path 12A Upstream part 12B Downstream part 14 Main valve 18 Pressure chamber 20 1st waterway 22 Water drainage path 24 Start valve 60 2nd waterway 62 Emergency stop valve 74 Emergency stop operation part

Claims (4)

(a) a water supply path, (b) a main valve that opens and closes the water supply path, and (c) a pressure chamber that is formed behind the main valve and presses the main valve in the valve closing direction by the pressure of water; (d) an upstream portion of the main valve in the water supply channel and the pressure chamber are in communication with each other, and a water conduit for introducing water in the water supply channel into the pressure chamber; and (e) water in the pressure chamber is supplied to the water supply channel. In the water supply apparatus comprising: a water drainage channel to be extracted to a downstream portion of the main valve, and (f) a start valve for opening the water drainage channel to open the main valve and starting water supply.
Maintaining the water channel normally in a throttled state, switching the water channel from the throttled state to the wide opening state based on human operation, increasing the amount of water introduced into the pressure chamber, and urgently supplying water A water supply apparatus comprising: an emergency stop valve that stops; and an emergency stop operation unit that forcibly operates the emergency stop valve toward a wide opening.   In Claim 1, the said water conduit passes through the said main valve, the 1st water conduit which connects the upstream part of the said main valve in the said water supply channel, and the said pressure chamber, and bypassing this main valve and this upstream part And a second water conduit that communicates with the pressure chamber, and the emergency stop valve opens and closes the second water conduit to change the water conduit from the throttled state to the wide opening state. A water supply device characterized by being switched.   The water supply device according to claim 2, wherein a flow passage area of the second water conduit is larger than a flow passage area of the first water conduit.   4. The water supply device according to claim 1, wherein the water supply device is configured as a flush valve device that supplies toilet flush water.

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