JPH09144096A - Toilet with two low tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To utilize rainwater on the roof as flush water with ease. SOLUTION: The rain gutter provided on the eaves of a roof is connected to the water reservoir tank, and rain on the roof is filled in the water reservoir tank so as to be connected to low tanks of a water flush toilet via a piping 11. A pair of low tanks are disposed, one is used as a rainwater low tank 22R to be supplied with water from the water reservoir tank, and the other is used as a service water low tank 22L to be supplied with water from a service water supplier, and water can be flushed into the toilet bowl 21 via a drain hose 23 from the rainwater low tank 22R or a service water low tank 22L.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a toilet in which rainwater falling on a roof can be used for flushing a flush toilet.

[0002]

2. Description of the Related Art Japan is one of the rainiest countries in the world, and although the annual rainfall is about 1750 mm / year, the terrain is steep and residential areas and roads are paved. It often leaks to the sea through the river, and attempts have been made to adopt a structure for storing rainwater in houses so that it can be effectively used. The water stored in this way was used for watering and irrigation.

[0003]

If a water storage tank is provided to collect rainwater as described above and used not only for sprinkling water but also for flushing a flush toilet, it is possible to save the usage fee of water supply, but only use rainwater. If this is done, the water tank will be emptied immediately after days without rain, and water will have to be used. Therefore, there has been a demand for a toilet that can be selectively used from two water sources according to the amount of stored water. Further, when water and rainwater are selectively supplied to one low tank to supply water, a switching valve is necessary, and it is necessary to switch the switching valve to supply water before flowing. Further, when the mixing stopper is used, if both are opened and a negative pressure is generated on the clean water side, there is a possibility that rainwater may be mixed into the clean water. In view of this, the present invention provides two low tanks, and connects the two water sources to different low tanks so that they can be selectively used according to the amount of rainwater stored.

[0004]

The present invention uses the following means in order to solve the above problems. That is, the gutter 1 provided on the eaves of the roof R is connected to the water storage tank 4 so that the rainwater that falls on the roof R is stored in the water storage tank 4, and the water storage tank 4 is flushed through the pipes 10 and 11. In a configuration in which the low tanks 22 of the toilets 12 and 13 are connected, a pair of the low tanks 22 are arranged, one of which serves as a rainwater low tank 22R, which supplies water from the water storage tank, and the other of which serves as a clean water low tank 22L, which supplies water from the water supply. The rainwater low tank 22R or the clean water low tank 22L can be supplied to the toilet bowl 21 through the drain hose 23. Normally, tap water is pumped,
Although the pipe diameter may be small, it takes time to fill the rainwater low tank 22R because rainwater uses only potential energy. Therefore, the rainwater low tank 2 from the water storage tank 4
The diameter of the pipe leading to 2R is made large to shorten the water supply time to the tank.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a schematic side view of a rainwater utilization system in which a two-low tank toilet of the present invention is arranged in a house, FIG. 2 is a perspective view of a rainwater-utilization two-low tank toilet, FIG. 3 is a side view of the same, and FIG. FIG. 5 is a front sectional view of the drain hose portion, and FIG. 6 is a perspective view showing another embodiment of the two-row tank.

A house equipped with the 2-low tank toilet of the present invention will be described with reference to FIG. The house shown in FIG. 1 is a two-story house, and the eaves gutter 1 is arranged in a substantially horizontal direction at the eaves at the bottom of the roof R. Rainwater is introduced into the vertical water storage tank 4 through the vertically-arranged vertical gutter 3.

The water storage tank 4 is erected on the side of the wall of the house so that a predetermined capacity can be stored. A filter is provided at the water intake from the vertical gutter 3 of the water storage tank 4,
Prevent dust from entering, and remove the outlet 4 in the middle or lower part.
a. 4b. 4c are provided, and the outlet 4a is connected to the flush toilet 12 on the second floor via a pipe 10 to supply water.
b is connected to a flush toilet 13 on the first floor via a pipe 11 to supply water, and rainwater can be used for flushing by a two-row tank toilet of the present invention described later. A faucet 14 is provided at the outlet 4c so that it can be used for watering a garden, irrigating a vegetable garden, washing a car, and the like. When the water level in the water storage tank 4 is higher than the position at which water is discharged, the water can be discharged without using a pump or the like by the potential energy, and water can be supplied inexpensively without the need for a drive source. I am trying. However, the positions and the numbers of the outlets 4a, 4b, 4c are not limited.

A pipe 5 is provided at the lower end of the water storage tank 4.
・ 6 is connected, the other ends of the pipes 5 and 6 communicate with the underground tank 9, and the upper end of the pipe 5 extends to the upper part of the water storage tank 4 to remove excess water (overflow) in the water storage tank 4. The water is stored in the underground tank 9, and a pump 7 is provided in the middle of the pipe 6 so that the water in the underground tank 9 can be pumped up and replenished when the water in the water storage tank 4 decreases.
In addition, an overflow pipe 14 is provided above the underground tank 9.
Is connected to the other end of the overflow pipe 14 so as to be discharged to a drainage groove or the like through the permeation mass 15, and the permeation mass 15 permeates into the ground to form groundwater, and rainwater rapidly flows out to the river. To prevent that. The flush toilets 12 and 13 are connected to a septic tank 19 (or sewer) via drainage pipes 16 and 17.

In this way, the rainwater that has fallen on the roof R is collected by the eaves gutter 1 and introduced into the water storage tank 4 through the slamming gutter 2 and the down gutter 3 so that the water storage tank 4 is completely filled. Then, the water is stored in the underground tank 9. Further, when the underground tank 9 becomes full, the overflow pipe 14 permeates into the ground through the permeation mass 15 so that water can be retained in the ground.

Next, the flush toilet 13 provided with the two-low tank toilet of the present invention will be described. That is, FIGS.
As shown in FIG. 3, a toilet bowl 21 is installed in the toilet 20, and a low tank 22 is arranged at the rear of the toilet bowl 21. The low tank 22 is a clean water low tank 22L and a rainwater low tank 22R.
It is made up of and is arranged side by side. The clean water low tank 2
The 2L and the rainwater low tank 22R have substantially the same configuration and are symmetrically arranged. However, as shown in FIG. 6, the low tank 22 may have a partition wall 22b formed at the center of the tank to integrally configure the clean water low tank 22L 'and the rainwater low tank 22R'. In this case, water is supplied from both sides of the low tank 22 ', and the piping configuration and the internal water supply / drainage structure are the same as those of the low tank in which two are independently provided.
The material of the low tank 22 can be made of pottery, metal, synthetic resin, or the like, and is not limited.

Water supply pipes 24L, 24 are provided on the inner (or outer) side surfaces of the clean water low tank 22L and the rainwater low tank 22R.
R is communicated, and the water pipe 26 and the pipe 11 from the water storage tank 4 project upward from the floor surfaces 27 on both sides of the rear part of the toilet 21, and the water is stopped between the water pipe 26 and the water supply pipe 24L. A plug 25L is interposed, and the pipe 11 and the water supply pipe 24R
A water stop plug 25R is provided between the water tank and the water tank so that the water supply can be stopped by closing the water stop cock when the inside of the raw tank 22 is maintained. Also, the water pipe 26 and the pipe 1
1 can also be configured to project from the left and right wall surfaces or the rear wall surface for piping, and in this case also, the piping configuration is similar to the above.

Further, the diameters of the pipe 11 and the water supply pipe 24R from the water storage tank 4 are the same as those of the tap water 26 and the water supply pipe 24L.
Thicker than the diameter of. That is, since the tap water is usually pumped, the pipe diameter may be small, but since rainwater uses only potential energy, it takes time to fill the rainwater low tank 22R with the same diameter pipe. Therefore, the pipe diameter from the water storage tank 4 to the rainwater low tank 22R is increased to shorten the water supply time to the rainwater low tank 22R.

Further, a peep window 22a (FIG. 2) is provided on the front surface of the rainwater low tank 22R so that it can be easily understood whether or not water is accumulated in the rainwater low tank 22R. However, it is also possible to arrange a water level gauge linked with a float ball 30b described later.

Since the inside of the low tank 22 has the same structure on the left and right, the structure inside the clean water low tank 22L on one side will be described. The end of the water supply pipe 24 is inserted into the clean water low tank 22L to connect the ball tap 30. The ball tap 30 is composed of a valve 30a and a floating ball 30b for opening and closing the valve. The floating ball 30 has a base arm pivotally supported by the valve 30a so that the middle part of the arm is connected to a spool of the valve to float. When the ball 30 goes down, the valve opens, and when it goes up, the valve closes.

An upper end of a drain hose 23 is communicated with the lower surface of the clean water low tank 22L, and the clean water low tank 22
A rubber float 31 is arranged at the upper end of the drain hose 23 in L so as to cover the opening, and the upper portion of the rubber float 31 is connected to a drain lever 34 via a chain 32 and a lever rod 33. Is arranged in front of the low tank 22, and the rubber float 31 can be lifted by rotating the drain lever 34. However, the drain lever 34R for rainwater is normal or a little large, and the drain lever 34L for clean water has a small shape so that the drain lever 34R for rainwater is normally used.
The drain lever 34L for tap water is made to be understood to be an emergency.

An overflow pipe 35 is erected on the upper portion of the drain hose 23 so as to communicate therewith. As shown in FIG. 5, the drain hose 23 is formed in a Y shape, and has a bifurcated upper end communicating with lower portions of the clean water low tank 22L and the rainwater low tank 22R, and a pipe from the upper end to a middle portion. The parts 23a and 23b are formed in an S shape, and the lower ends thereof communicate with the rear part of the toilet 21. The pipe part 23
The reason why the a and 23b are curved in an S shape is that when they join at an intermediate portion, they smoothly flow vertically downward, for example, when tap water flows from the pipe portion 23a in the A direction. The rubber float 31 in the rainwater low tank 22R is lifted by its water pressure so that the rainwater does not flow so that the water smoothly flows into the toilet bowl and flows toward the pipe portion 23b at the branch portion in the middle. Similarly, rainwater is B
When it flows in the direction, the rubber float 31 in the clean water low tank 22L is lifted to prevent the clean water from flowing, thereby preventing a malfunction.

With this structure, when rainwater is stored in the vertical water storage tank 4, the rainwater flows into the rainwater low tank 22R lower than the water level due to the potential energy of the water in the water storage tank 4, and the pipe 11, Water is supplied through the water stopcock 25R (open), the water supply pipe 24R, and the ball tap 30. When this water collects in the rainwater low tank 22R, the water level rises, and the floating balls 30b rise, the floating balls 30
The arm attaching b is rotated and the valve 30a
Is closed and the water supply is stopped, and the set amount of water is stored in the rainwater low tank 22R. Similarly, the water in the clean water low tank 22L is also supplied from the clean water to store a set amount of water.

When there is water in the rainwater low tank 22R, when the toilet is used and the drain lever 34R is rotated, the rubber float 3 is moved through the lever rod 33 and the chain 32.
1 is lifted, the upper end opening of the drainage hose 23 is opened, the water in the rainwater low tank 22R is discharged, and the drainage hose 23 flows into the toilet 21. In addition, rainwater low tank 22
When there is no water in R, the drain lever 34L on the clean water low tank 22L side is rotated to drain water in the same manner as described above.

[0019]

As described above, the present invention has the following advantages. That is, since two low tanks for clean water and rainwater are provided in the toilet, if rainwater is accumulated in the water storage tank, rainwater can be flushed to the flush toilet, and if rainwater is not accumulated in the water storage tank. The water from the water supply can be used as the water source, and the water can be easily used depending on the amount of water in the water storage tank. Also, the water resource of rainwater can be effectively used, and the amount of water supply used can be saved.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a rainwater utilization system in which a two-low tank toilet of the present invention is arranged in a house.

FIG. 2 is a perspective view of a rainwater-utilizing two-low tank toilet.

FIG. 3 is a side view of the same.

FIG. 4 is a front sectional view of a two-row tank.

FIG. 5 is a front sectional view of a connecting pipe portion.

FIG. 6 is a perspective view showing another embodiment of the two-low tank.

[Explanation of symbols]

 R Roof 1 house Gutter 4 Water storage tank 10/11 Piping 12/13 Flush toilet 21 Toilet bowl 22 Low tank 22R Rainwater low tank 22L Clean water low tank 23 Drain hose

Claims (1)

[Claims] 1. A gutter provided on a roof eave is connected to a water storage tank so that rainwater falling on the roof is stored in the water storage tank, and the water storage tank is connected to a low tank of a flush toilet via a pipe. In the configuration, a pair of the low tanks are arranged, one is a rainwater low tank, water is supplied from the water storage tank, the other is a clean water low tank, water is supplied from the tap water, and a drain hose is provided from the rainwater low tank or the clean water low tank. 2 low tank toilets that can be flushed through the toilet bowl.