JP2713077B2 - Low tank water spouting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water discharge device for a low tank for supplying flush water to a toilet, and more particularly to a device for adjusting the amount of water remaining in a low tank. More specifically, the present invention relates to a low tank water discharge device suitable for application to a siphon type Western style toilet.

[0002]

2. Description of the Related Art As is well known,
The float valve 2 is provided, and when the float valve 2 is pulled up by operating a lever handle, a switch, or the like, water in the low tank flows out toward the toilet. FIG. 8 is a longitudinal sectional view of such a float valve device. The valve seat 1 is attached to the washing water outlet of the bottom wall 6 of the low tank, and the float valve 2 is seated on the valve seat 1. 2a is a guide rod connected to the float valve 2. An overflow pipe 3 is attached to the valve seat 1, and a stopper (float stop) for the float valve 2 is provided in the middle of the overflow pipe 3.
4 is attached. The float valve 2 has a hollow inside so that it can float above the water surface.

In the state shown in the figure, the float valve 2 is operated by water pressure.
Is pressed against the valve seat 1 and is in a water stoppage (water storage) state. Reference numeral 6 denotes a bottom wall of the low tank. When the float valve 2 is pulled up via the chain 5, the float valve 2 is released from the water pressure and floats until it comes into contact with the stopper 4. In this state, the washing water flows out of the valve seat 1.

When the water level in the low tank falls below the stopper 4, the float valve 2 is eventually moved to the stopper 4.
And descends with the falling water level while floating on the water surface. When the water level reaches L in FIG. 8, the float valve 2 is forcibly seated on the valve seat 1 by being drawn into the discharged water flow passing through the valve seat 1. Once the float valve 2 is seated, the float valve 2 is pressed against the valve seat 1 by the water pressure from above, and the water is stopped.

[0005] Therefore, water below L in Fig. 8 is residual water (commonly referred to as dead water) which is not discharged from the low tank.

As described above, in the conventional float valve device, since the buoyancy of the float valve 2 is constant, the water level L is constant and the amount of residual water is also constant. There was a problem that it was not possible.

In order to solve such a problem, the present applicant disclosed in Japanese Patent Application No. Hei 3-22567 (hereinafter referred to as the prior application) (see Japanese Patent Application Laid-Open No. 5-65730) the residual water in a low tank. A water discharge device that can be reduced was proposed.

FIG. 7 is a longitudinal sectional view showing the low tank water discharging device of the prior application when the inside of the low tank is full.

In the water discharge device for a low tank, a container 7 having a bottomless lid is disposed so as to cover the float valve 2. The container 7 is a bottomless cylindrical shape having a larger diameter than the float valve 2, and is fixed to the overflow pipe 3. An opening 8 is provided on the upper surface of the container 7 at a position offset from the center of the float valve 2, and a valve 9 is inserted into the opening 8. The valve element 9 has flanges 9a and 9b at the upper and lower portions, respectively, and a packing 9c is attached to the lower surface of the upper flange 9a. Since the valve body 9 is provided with the packing 9c, the sealing property when closing the opening 8 is good. The lower end of the valve body 9 and the float valve 2
Are connected by a chain 5a, and the upper end of the valve body 9 is connected to a lever handle (not shown) of the low tank by a chain 5b.

Since the valve body 9 is provided with a flange 9b, the chain 5 is operated by operating a lever handle of the low tank.
Even if b is pulled strongly, the flange 9b abuts on the ceiling surface of the container 7, and the chains 5b and 5a are not further lifted.

The reason why the center of the valve body 9 is shifted from the center of the float valve 2 is to prevent the chain 5a from tangling and forming a block.

In the container 7, a stopper 4A for preventing the float valve 2 from floating is provided. The stopper 4 </ b> A is a rod-shaped member that projects in the centripetal direction from the inner peripheral surface of the container 7. The stopper 4A may be provided below the guide rod 2a of the float valve 2.

The lower end of the container 7 is lower than the upper surface 1a of the valve seat 1. Other configurations are the same as those in FIG. 8, and the same reference numerals indicate the same parts.

Next, the operation of the low tank water discharging device of the prior application will be described. Chain 5b by lever handle,
When the float valve 5a is pulled up, the float valve 2 is pulled up, and the water in the low tank goes around the lower end of the container 7 and flows out from the valve seat 1. At this time, the valve body 9 is pulled up together with the chain 5b, the opening 8 is opened, and water flows into the container 7 through the opening 8. For this reason, the inside of the container 7 is kept full.

When the hand is released from the lever handle, the chains 5b and 5a are lowered. When the chain 5b descends, the valve body 9 closes the opening 8 on the upper part of the container 7. For this reason, the inside of the container 7 remains filled with water, and the float valve 2 remains floating. Then, the water in the low tank goes around the lower end of the container 7, reaches the valve seat 1, and continues flowing out.

Until the water level in the low tank reaches the lower end of the container 7, the outflow of water in the low tank continues. During this time, the inside of the container 7 is kept full. Also,
For this reason, the float valve remains floating in the container 7.

When the water level in the low tank reaches the lower end of the container 7, air enters into the container 7 from the lower end of the container 7, the water level in the container 7 drops rapidly, and the float valve 2 moves the valve seat 1 And the outflow of water is stopped.

As described above, the water in the low tank is discharged until the water level reaches the lower end of the container 7.
Therefore, by setting the position of the lower end of the container 7 sufficiently low, the amount of residual water in the low tank can be reduced.

[0019]

As is well known, siphon type Western style toilets (siphon type Western style toilets, siphon jet type Western style toilets, etc.) are configured to discharge sewage in toilet bowls to drains by siphon action. It was done.

In this siphon type Western style toilet, it is desired to supply a relatively large amount of washing water so as to start the siphon early after the supply of washing water, but at the same time, for a relatively long time after the start of the siphon. It is expected that a sufficient amount of washing water will be supplied to maintain the siphon, and that the siphon action will be continued for a long time.

[0021] The present invention has been made in view of such circumstances, and can reduce residual water in a low tank similarly to the above-mentioned prior application, and furthermore, continuously wash water with an amount of water capable of maintaining a siphon for a long time. An object of the present invention is to provide a water discharge device for a low tank that can be discharged.

[0022]

According to a first aspect of the present invention, there is provided a water discharge device for a low tank, wherein a valve seat mounted on a flush water outlet on a bottom wall of the low tank, a float valve seated on the valve seat, and the float valve are connected to the float valve. A low-tank water spouting device having a float pull-up linear body provided therein, wherein the float valve is provided on a topless portion of the container having a bottom-less closed shape and the linear valve is provided on an upper surface portion of the container. And the valve body for opening and closing the opening provided in the linear body,
A valve body that separates from the upper surface of the container when the linear body is lifted up and opens the opening, and closes the opening when the linear body descends by closely contacting the upper peripheral portion of the opening. And an introduction hole for introducing water from the periphery of the container into the container, and a valve device for opening and closing the introduction hole. A water level responsive valve device that closes the introduction hole when the water level falls below a predetermined water level.

According to a second aspect of the present invention, in the low tank water discharging device according to the first aspect, the valve device is pivotally attached to an upper edge portion of the introduction hole, and a hanging posture covering the introduction hole; And a floating plate connected to the valve plate, the valve plate being capable of taking a flipping-up posture with the valve open.

[0024]

In the water discharge device for a low tank according to the first aspect of the present invention, when the amount of water stored in the low tank is full, the float valve is installed near the bottom of the low tank and is seated on the valve seat by water pressure. . In addition, the water level response valve device
When the amount of water stored in the low tank is full, the introduction hole provided on the side surface of the container and connecting the inside and outside of the container is opened.

In the water discharge device for a low tank according to the present invention,
When the linear body is pulled up by the handle or the like, the float valve is pulled up, and the water in the low tank flows out through the valve seat. At this time, the flow of water is a combination of the flow of water flowing from the inside of the low tank around the lower end of the container and passing through the valve seat and the flow of water flowing from the inside of the low tank through the introduction hole through the valve seat.

When the valve body is pulled up together with the linear body, the opening at the top of the container is opened, and water flows into the container through this opening. For this reason, the inside of a container is maintained full. In a low tank, immediately after the linear body is pulled up with a handle or the like, the hand is released from the handle or the like. When the hand is released in this manner, the linear body descends. When the linear body descends, the valve provided on the linear body closes the opening at the top of the container. Since the inside of the container is filled with water, the float valve remains floating. Therefore, the water in the low tank goes around the lower end of the container or reaches the valve seat through the introduction hole and continues flowing out. That is, the effluent at this time is a mixture of the water flowing around the lower end of the container and the water flowing through the introduction hole provided in the side surface of the container. This merged water flow is a water flow that activates the siphon at an early stage in the siphon type Western style toilet. When the water level in the low tank falls with the amount of water flowing out and falls below a predetermined water level, the water level response valve device closes the introduction hole. After this time, the water flowing out of the low tank is only the water flowing around the lower end of the container and passing through the valve seat, so that the water flow decreases (narrows). This narrow water flow is the water flow that maintains the siphon.

Until the water level in the low tank reaches the lower end of the container, the outflow of water in the low tank continues. During this time, the inside of the container is maintained in a full state. For this reason, the float valve remains floating in the container.

When the water level in the low tank reaches the lower end of the container, air enters into the container from the lower end of the container, the water level in the container rapidly drops, the float valve sits on the valve seat, and the water flows out. Is stopped. Therefore, water flows out until the water level in the low tank reaches the lower end of the container, and the amount of residual water in the low tank decreases. Thus, in the low tank water discharge device of the present invention, the low tank residual water is reduced. Also, at the same time as the operation of the lever handle, it becomes possible to supply a relatively large amount of washing water for activating the siphon to the siphon-type Western style urinal at an early stage, and thereafter, to supply a water amount capable of maintaining the siphon for a relatively long time.

In the water discharge device for a low tank according to the second aspect, when the water storage amount in the low tank is full, the float of the water level responsive valve device can hold the valve plate connected to the float in an upright posture. Buoyancy is acting, and the introduction hole opened and closed by the valve plate is open. When the water level in the low tank falls with the outflow of water, the position of the float also falls. As the float moves down, the attitude of the valve plate connected to the float also gradually changes (rotates) from the flip-up attitude to the hanging attitude. When the valve plate rotates to a predetermined position, the force in the direction of closing the introduction hole applied to the valve plate by the water flow passing through the introduction hole exceeds the force in the direction of opening the introduction hole applied to the valve plate by the float. Thus, the valve plate is forcibly rotated to close the introduction hole. Thus, the valve plate of the water level responsive valve device is
The opening and closing of the introduction hole on the side of the container is performed according to the water level in the low tank, whereby the amount of water flowing out of the low tank is controlled.

[0030]

An embodiment will be described below with reference to FIGS. FIG. 1 is a longitudinal sectional view showing a water discharge device of a low tank according to an embodiment when the inside of the low tank is full, and FIGS. 2 to 5 are longitudinal sectional views showing the operation of the water discharge device of the low tank. is there. FIG. 6 is a time diagram of the amount of water supplied to the water discharge device of the low tank.

In the water discharge device of this low tank, an introduction hole 10 is opened on a lower side surface of a bottomless closed container 7 arranged so as to cover the float valve 2. The introduction hole 10 can be opened and closed by a valve plate 11 having a seal packing 11b. The valve plate 11 is a connecting rod (or a wire,
A chain, a string, or the like) 12 is connected to the float 13. The valve plate 11 is pivotally connected to an upper edge of the introduction hole 10 by a hinge 11a.

When the water level in the low tank is high, such as when the water is full, the float 13 is located at a sufficiently high position and the float 1
3 has a buoyant force capable of holding the valve plate 11 in a flipped-up posture, so that the introduction hole 10 is opened as shown in FIGS.
As detailed later, when the water level in the low tank drops,
Since the float 13 is also located at a lower position, the valve plate 11 takes a hanging posture, and the introduction hole 10 is closed as shown in FIG. The mechanism composed of the introduction hole 10, the valve plate 11, the connecting rod 12, and the float 13 is used to open and close the introduction hole 10 according to the fluctuation of the water level in the low tank. A water level responsive valve device is configured. The water discharge device for a low tank according to the present embodiment is obtained by adding a water level responsive valve device according to the conventional device of FIG. 8, and the other configuration is the same as that of FIG. 8, and the same reference numerals denote the same parts.

Next, the operation of the water discharge device for a low tank according to this embodiment will be described.

Chains 5b, 5a are operated by lever handles.
Is lifted, the float valve 2 is pulled up, and the water in the low tank goes around the lower end of the container 7 and flows out of the valve seat 1. At this time, the valve body 9 is pulled up together with the chain 5b, the opening 8 is opened as shown in FIG. 2, and water flows into the container 7 through the opening 8. For this reason, the inside of the container 7 is kept full.

When the hand is released from the lever handle, the chains 5b and 5a are lowered. When the chain 5b descends, the valve 9 closes the opening 8 at the top of the container 7, as shown in FIG. Therefore, the container 7 remains filled with water, and the float valve 2 remains floating. Therefore, the water in the low tank flows out as a combined flow of the water flowing around the lower end of the container 7 and reaching the valve seat 1 and the water flowing reaching the valve seat 1 through the introduction hole 10 of the water level responsive valve device. Since the amount of water in the merged water flow is large (the flow velocity is large), the siphon is activated early in the siphon-type Western style toilet.

When the water level in the low tank falls along with the amount of outflow as shown in FIGS. 1 to 3, the position of the float 13 also falls. When the water level is lower than the state shown in FIG. 3, the float 13 also descends, and the float 13
Also, the attitude of the valve plate 11 connected continuously with this gradually changes from the flip-up attitude to the drooping attitude. When the valve plate 11 rotates downward to a certain position, the force applied to the valve plate 11 by the water force passing through the introduction hole 10 exceeds the buoyancy of the float 13, and the valve plate 11 is moved to the position shown in FIG. Thus, it is pressed against the side surface of the container 7 to close the introduction hole 10.

As shown in FIG. 4, once the introduction hole 10 is closed, the water pressure in the low tank is further applied to bring the valve plate 11 into close contact with the periphery of the introduction hole 10, and the introduction hole 10 of the water level responsive valve device is closed. Closed watertight. Then the outflow water flow
Only the water flowing around the lower end of the container 7 and reaching the valve seat 1 flows out as a water flow having a smaller flow rate as compared with the merged water flow described above. The water flow having the small flow rate is a water flow for maintaining the siphon in the siphon-type Western style toilet for a relatively long time.

Until the water level in the low tank reaches the lower end of the container 7, the outflow of water in the low tank continues. During this time, the inside of the container 7 is kept full. Also,
For this reason, the float valve remains floating in the container 7.

As shown in FIG. 5, when the water level in the low tank reaches the lower end of the container 7, air enters into the container 7 from the lower end of the container 7, and the water level in the container 7 drops rapidly.
The float valve 2 is seated on the valve seat 1, and the outflow of water is stopped. As described above, since the water in the low tank flows out such that the water level in the low tank drops to the lower end of the container 7,
The amount of residual water in the low tank decreases.

As shown qualitatively and schematically in FIG. 6, a relatively large amount of washing water is supplied at the same time as the operation of the lever handle, and the siphon is activated early in the siphon type Western style toilet. Become like Further, when the water level in the low tank drops to a predetermined water level, the valve plate 11 closes the introduction hole 10. Then, a relatively small amount of water that can maintain the siphon for a long time is continuously supplied.

The above embodiment is an example of the present invention, and the present invention can employ other configurations. For example, in the above embodiment, the valve plate 11 is of a type that rotates around the hinge 11a, but a valve plate that moves up and down along the side surface of the container 7 may be employed. Further, in the above embodiment, the valve plate 11 is caused to respond to the water level by the float 13, but the water level may be detected by a water level sensor and the introduction hole may be opened and closed by an electric valve. Further, a plurality of the introduction holes may be provided.

[0042]

As described above, according to the low tank water discharging apparatus of the present invention, the amount of residual water in the low tank is reduced.
The water discharge device for a low tank according to the present invention is provided with a mechanism for changing the amount of effluent in accordance with the water level. Time-dependent flow control that can be continued for a long time has been enabled. This makes it possible to activate the siphon at an early stage in the siphon type Western-style toilet and to continue the siphon for a relatively long time thereafter.

According to the water discharge device for a low tank of the second aspect, the above temporal flow rate control can be performed with a relatively simple configuration.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a water discharge device for a low tank according to an embodiment.

FIG. 2 is a longitudinal sectional view of the water discharge device for a low tank according to the embodiment.

FIG. 3 is a vertical sectional view of a water discharge device for a low tank according to the embodiment.

FIG. 4 is a longitudinal sectional view of a water discharge device for a low tank according to the present embodiment.

FIG. 5 is a longitudinal sectional view of a water discharge device for a low tank according to the present embodiment.

FIG. 6 is a time diagram of the supply water amount of the low tank water discharge device according to the present embodiment.

FIG. 7 is a longitudinal sectional view of a low tank water discharge device of the prior application.

FIG. 8 is a longitudinal sectional view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Valve seat 2 Float valve 4 Stopper 5, 5a, 5b Chain 7 Container 8 Opening 9 Valve body 10 Introducing hole 11 Valve plate 12 Connecting rod 13 Float

Claims (2)

(57) [Claims] 1. A low tank comprising a valve seat attached to a washing water outlet on a bottom wall of a low tank, a float valve seated on the valve seat, and a float pulling linear body connected to the float valve. In the water spouting device, a container having a bottomless shape with the float valve housed therein, an opening provided in an upper surface portion of the container, the linear body being inserted therethrough, and being provided in the linear body A valve body for opening and closing the opening, wherein the valve body is separated from an upper surface of the container when the linear body is pulled up to open the opening, and when the linear body descends, A valve body which is in close contact with the peripheral portion of the container to close the opening; an inlet provided on a side surface of the container, for introducing water into the container from around the container; and A valve device for opening and closing, wherein a water level in the low tank falls below a predetermined water level. Water discharge device of a low tank, characterized by comprising: a water level responsive valve device for closing the introduction hole when Tsu. 2. The valve device according to claim 1, wherein the valve device is pivotally attached to an upper edge portion of the introduction hole, and has a hanging posture covering the introduction hole and a flipping posture opening the introduction hole. And a float connected to the valve plate.