JPS5914551Y2 - Drainage device for water storage tank for flush toilet - Google Patents

Description

[Detailed description of the invention] This invention is a flush toilet in which the amount of flush water required for flushing urine is drained into the toilet bowl when the operating lever of the water storage tank for flush toilets is turned to the urine flushing side. This relates to a drainage device for a toilet water storage tank, and its purpose is to have a simple structure that drains the amount of water necessary for urinating simply by attaching it to the overflow pipe in the water storage tank, and to have a water-saving effect. The purpose is to provide a large drainage system.

In conventional water storage tanks for flush toilets, when the operating lever is rotated toward the urine flushing side, the floating rubber inside the tank is pulled up and no longer blocks the drain port, allowing the water in the water storage tank to be discharged into the toilet bowl. If you let go of the operating lever immediately after turning it, the floating rubber will instantly block the drain port due to water pressure, preventing sufficient water from draining into the toilet bowl, and preventing the amount of water necessary for flushing urine from being supplied to the toilet bowl.

Therefore, cleaning of the toilet bowl becomes insufficient, and troublesome operations are required, such as having to hold the operating lever in a rotated position for a while to open the drain port.

Therefore, the user often turns the operating lever toward the toilet flushing side and flushes the toilet bowl with a large amount of water that is unnecessary for flushing urine.

However, in the case of fecal washing, more than 121 pieces of ice are drained from the tank, resulting in a significant waste of water and being uneconomical.

Even though there is a handle for urination and a cleaning mechanism, it is rarely used.

The basic structure of this device is to provide a measuring cup-shaped cap that is larger than the outside diameter of the overflow pipe around the upper end opening side of the overflow pipe, and to create a gap between the outer periphery of the overflow pipe and the peripheral wall of the cap and the upper end of the overflow pipe. A conduit is provided between the opening and the upper end closing surface of the cap, and these conduits are communicated with the conduit of the overflow pipe, and an air introduction hole communicating with the conduit is provided in the peripheral wall of the cap. The air inlet hole is removably closed with a plug, and if it is mounted on the upper end of the overflow pipe, it will create a siphon effect with the overflow pipe when washing urine, allowing a fixed amount of water to be drained. This is what I did.

Hereinafter, embodiments of the present invention will be described based on the drawings.

Embodiment 1 In FIGS. 1 to 3, a cap 7 mounted on an upper end 3a of an overflow pipe 3 installed in a drain valve 2 in a well-known water storage tank 1 is attached to a cylindrical peripheral wall. The fitting hole 4 has an inverted cup shape with the upper end portion 7a closed and corresponds to the outer diameter dimension of the upper end portion 3a of the overflow pipe 3.
It is opened from the bottom.

Concave groove-shaped water conduits 5 are provided at several locations on the inner surface of the peripheral wall 7a of the canopy 7 from the lower open end to the vicinity of the closed end, and furthermore, on the inner surface of the closed end, a water conduit 5' leading to the water conduit 5 is provided.
is formed into a substantially cross shape, and an inner cavity 6 is constituted by the insertion hole 4, the conduit 5, and the conduit 5'.

Air introduction holes 8 are provided in the peripheral wall 7a of the cap 7 at required intervals vertically so as to communicate with the water conduit 5, and the air introduction holes 8 are closed with plugs 9.

The plug 9 closes the air introduction hole 8 to prevent air from flowing through it, is removable, and is installed in an appropriate manner so that the minimum amount of water required for urinary washing is sucked into the overflow pipe 3 by siphon action. Remove the plug 9 from the correct position and use it.

In the figure, 3b is a water passage hole of the overflow pipe 3, 10 is a floating rubber, 11 is an operation lever for operating the floating rubber, and 12 is a water guide pipe.

Embodiment 2 In FIGS. 4 to 6, the cap 14 mounted on the upper end 3a of the overflow pipe 3 has an inverted cup shape with the upper end of the cylindrical peripheral wall 14a closed. A circular water conduit 1 with a larger diameter than the outer diameter of the upper end 3a of the water pipe 3
3 is open from the bottom.

A protruding shaft 15 in the shape of a cylinder divided into four parts, which is inserted into the water passage hole 3b of the overflow pipe 3, is provided on the inner surface of the closed end of the cap 14, and protrudes downward from the peripheral wall 14a. Similarly, an air introduction hole 16 is provided so as to communicate with the water conduit 13, and the air introduction hole 16 is closed with a plug 17.

The plug 17 is removable.

Embodiment 3 In FIGS. 7 to 9, the cap 19 mounted on the upper end 3a of the overflow pipe 3 has an inverted cup shape with the upper end of the cylindrical peripheral wall 19a closed. A circular water conduit 1 with a larger diameter than the outer dimensions of the upper end 3a of the water pipe 3
8 opens from the bottom.

Then, the overflow pipe 3 is attached to the inner surface of the closed end of the cap 19.
A projecting shaft 20 that is inserted into the water passage hole 3b is provided to protrude downward, and groove-shaped water channels 21 are provided at several locations along the longitudinal direction on the outer peripheral surface of the projecting shaft 20. and the water passage hole 3b of the overflow pipe 3 communicate with each other.

Base 20 of protruding shaft 20 near the closed end of cap 19
A is formed to have a larger diameter than the inner diameter of the water hole 3b so as not to be inserted into the water hole 3b.

The peripheral wall 19 a is provided with an air introduction hole 22 so as to communicate with the water conduit 18 as in the first embodiment.
2 is closed with a plug 23.

The plug 23 is removable. The cap is used by being attached to the upper open end of the overflow pipe.

When the operating lever 11 is rotated toward the urine washing side, the floating rubber 10 is pulled up and separated from the drain valve 2 by the rotation of the operating lever 11, so that the valve port 2a is opened and the water in the water storage tank 1 is drained from the valve port 2a. It flows out through the water pipe 12 and flows down towards the toilet bowl.

When the operating lever 11 is released, the floating rubber 10 comes into close contact with the drain valve 2 in a very short time due to the water pressure in the water storage tank and closes the valve port 2a, so that water is no longer drained through the valve port 2a.

When the water flowing into the water pipe 12 flows down to fill the inside of the water pipe 12, the pressure inside the overflow pipe 3 becomes lower than the atmospheric pressure acting on the water surface as the water flows down, and the water storage tank 1 is lowered by a siphon effect. The water inside is sucked into the overflow pipe 3 from the water conduit, passes through the water conduit 12, and is discharged into the toilet bowl.

At this time, since the amount of water discharged is greater than the amount of water supplied from the water conduit, the water level gradually decreases, and when air begins to be sucked in from the lower open end of the cap 7, the siphon effect is canceled and the water in the water storage tank 1 is reduced. The water will no longer be sucked into the overflow pipe 3, and therefore water will no longer be drained into the toilet bowl.

The amount of water drained into the toilet bowl is the difference between the water level H when it is full and the water level H', which corresponds to the opening end of the cap when the water level drops and air is sucked into the toilet and the scion effect no longer occurs, so reduce the amount of water drained. In that case, the plug 9 at the position corresponding to the desired drainage amount may be removed so that air can be sucked in through the air introduction hole 8.

The functions of the second and third embodiments are the same as those of the first embodiment, only the means for attachment to the overflow pipe 3 are different.

The cap only needs to be such that the water in the water storage tank 1 is sucked into the overflow pipe 3 in order to produce a siphon effect, and it may be attached to the upper end 3a of the overflow pipe 3 with screws or other means. good.

Since the present invention has the above-mentioned configuration, the amount of water required for urinary washing can be drained by simply capping the overflow pipe, which was conventionally provided only to drain water that overflowed the water level when the water was full. Therefore, the toilet bowl can be thoroughly cleaned.

In addition, since the amount of drainage can be increased or decreased by attaching and removing the plug, it is economical as it saves a lot of water compared to the conventional method in which a large amount of water is unnecessary for urinating.

The present invention has a simple structure, so it can be manufactured at low cost, and since it is easy to attach to an overflow pipe, it can be installed to an overflow pipe of an existing water storage tank, and can be easily implemented even by an amateur.

[Brief Description of the Drawings] Fig. 1 is a partial sectional view of a water storage tank adopting the present invention-embodiment, Fig. 2 is a sectional view taken along the line A-A in Fig. 1, and Fig. 3 is the same as that shown in Fig. 1. 4 is a longitudinal sectional view of another example of the cap, FIG. 5 is a sectional view taken along the line C-C in FIG. 4, and FIG. 6 is a sectional view taken along the line D- in FIG. 4. 7 is a longitudinal sectional view of another example of the cap, FIG. 8 is a sectional view taken along the line E-E in FIG. 7, and FIG. 9 is a sectional view taken along the line FF in FIG. 7. It is an arrow sectional view. Explanation of symbols for main parts 3... Overflow pipe, 3a.
...Top end, 3b...Water hole.

Claims (1)

[Scope of utility model registration request] A measuring cup-shaped cap larger than the outer diameter of the overflow pipe is installed around the upper end opening of the overflow pipe, and a cap is installed between the outer periphery of the overflow pipe and the peripheral wall of the cap, and between the upper end opening of the overflow pipe and the upper end of the cap. A conduit is provided between each of the caps, and these conduit conduits are communicated with the conduit of the overflow pipe, and an air introduction hole leading to the conduit is provided in the peripheral wall of the cap, and the air conduit hole is removed with a plug. Drainage system in a water storage tank for a flush toilet that can be blocked.