Flush toilet water saving system

Abstract

To provide a flush toilet water-saving system capable of greatly saving the amount of water used by a flush toilet used under normal circumstances. [Solution] A water-saving toilet is configured to store waste in a horizontal pipe each time it is used. The stored waste is pressure-fed to a sewer pipe using transport water from a flushing device. A water storage tank is provided in the flushing device to store wastewater to be flushed into the sewer pipe as transport water. The system is configured to supply the transport water in the water storage tank to the horizontal pipe. The system is configured to pressure-fed waste in the horizontal pipe to the sewer pipe.

Description

[Technical field]

[0001] The present invention relates to a flush toilet water-saving system that can significantly reduce the amount of water used in a flush toilet. [Background technology]

[0002] Patent Document 1 is a flush toilet water-saving system previously proposed by the applicant. This system is configured to flush a small amount of flush water each time the toilet bowl of a flush toilet is used, storing waste in a horizontal pipe, and to pump out the stored waste with the transport water of a flushing mechanism that directly supplies transport water to the horizontal pipe.

[0003] Meanwhile, a mechanism for reusing bath water is described in Patent Document 2. This mechanism conveys and stores water in a water storage tank 2 buried within the premises of a house, and when the toilet is used, a water lift pump 4 draws in and discharges the bath water from the water storage tank 2, reusing it as toilet flush water. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 7175064 [Patent Document 2] Patent No. 3430469 Summary of the Invention [Problem to be solved by the invention]

[0005] The water-saving system described in Patent Document 1 is configured to flush only 350cc to 500cc of flush water each time it is used, storing waste in a horizontal pipe, and then pumping out the stored waste from 2 to 5 uses all at once with 6 to 28 liters of conveying water from the flushing mechanism. As a result, it is possible to save water significantly more than with conventional flush toilets.

[0006] To further reduce the amount of water used by such water-saving flush toilets, it is conceivable to increase the number of times waste is stored or to reduce the amount of water carried by the flushing mechanism. However, increasing the number of times waste is stored can cause the horizontal pipe to become clogged. Also, reducing the amount of water carried can make it impossible to reliably pump out the stored waste.

[0007] Meanwhile, the water recycling mechanism in Patent Document 2 reuses bath water in a flush toilet, where water stored in a buried water storage tank 2 is pumped up to a flush water tank 3 by a lifting pump 4 and reused as toilet flush water. With this mechanism, in order to reuse bath water, new piping is required between the toilet and the bathtub, which poses the problem that the overall mechanism of the facility becomes extremely complicated.

[0008] Moreover, since both the water storage tank 2 and the water pump 4 are constructed to be buried underground, adding this burial work to the overall structure of the facility will result in extremely high construction costs.

[0009] The present invention was created to solve the above-mentioned problems, and aims to provide a flush toilet water-saving system that is configured to store waste in a horizontal pipe, can transport the waste stored in the horizontal pipe extremely efficiently, can further reduce the amount of water used, and also reduces the construction costs of the equipment. [Means for solving the problem]

[0010] In order to achieve the above-mentioned object, the first means of the present invention is a flush toilet water-saving system configured to store waste in a horizontal pipe P each time a water-saving toilet 10 is used, and to pump the stored waste to a sewer pipe using conveying water supplied from a flushing device 20 to the horizontal pipe P, The flushing device 20 is a device for flushing wastewater to be discharged into a sewer pipe. Flush toilet A water storage tank 21 is provided to store water for transport. The water storage tank 21 is installed at a position higher than the horizontal pipe P on the downstream side where either or both of the domestic wastewater and rainwater flow into the sewer pipe. When the supply port of the water storage tank 21 is opened by the supply mechanism 22 that opens and closes the supply port of the water storage tank 21, the conveyed water is discharged due to the difference in height, and the water pressure of the conveyed water discharged from the water storage tank 21 pressures the stored wastewater into the sewer pipe. The reason for this is that it is structured as follows.

[0011] The flushing device 20 of the second means is configured to supply conveyed water from the water storage tank 21 to the horizontal piping P when a sensor 23 detects the use of the toilet 10. Effect of the Invention

[0015] According to the present invention, in a water-saving system configured to store wastewater in a horizontal pipe, wastewater discharged into a sewer pipe is reused as conveying water, thereby making it possible to greatly reduce the amount of water used.

[0016] Moreover, because the sensor 23 that detects the use of the toilet 10 allows conveying water to be supplied to the horizontal piping every time the toilet 10 is used, there is no need to store waste in the horizontal piping multiple times.

[0017] Furthermore, since the water storage tank 21 is installed downstream of where either or both of the miscellaneous wastewater and rainwater flow into the sewer pipes, there is no need to use electricity, a motor, or the like when storing conveyed water in the water storage tank 21. As a result, the construction costs of the facility are also reduced.

[0018] In addition, since the horizontal piping P is supplied with the water pressure of the conveying water discharged when the supply port of the water storage tank 21 is opened, the conveying water can be supplied to the horizontal piping P with extremely low energy consumption.

[0019] Furthermore, by providing a submersible pump 34 in the supply mechanism 22, the transport water can be stably supplied to the horizontal piping P regardless of where the water storage tank 21 is installed.

[0020] In this way, according to the present invention, waste stored in the horizontal piping can be transported extremely efficiently, making it possible to further greatly reduce the amount of water used. [Brief description of the drawings]

[0021] [Figure 1] FIG. 2 is a schematic cross-sectional side view showing a reference example of the present invention. [Diagram 2]1 is a schematic cross-sectional side view showing one embodiment of the present invention. [Diagram 3] FIG. 4 is a schematic cross-sectional side view showing another embodiment of the present invention. [Figure 4] FIG. 2 is a schematic cross-sectional side view showing a reference example of the present invention. [Diagram 5] FIG. 2 is a side cross-sectional view showing a main part of a balanced on-off valve. [Figure 6] 1A is a side cross-sectional view of a main part of a forced on-off valve, in which FIG. 1A shows a closed state and FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] The water-saving system of the present invention is a system for daily saving water usage in a flush toilet. That is, the flush toilet of the present invention is a flush toilet that is structured to transport waste from the drain 11 of the toilet bowl 10 through a horizontal pipe P, and stores the waste in the horizontal pipe P.

[0023] The toilet 10 is a water-saving toilet 10, for example, by using a simple flush toilet 10 with a water volume of 350cc to 500cc per flush, waste can be stored in the horizontal piping P (see Figures 5 and 6). Also, the type of toilet 10 is not limited to the example shown in the figure, and various types can be used as described below.

[0024] The water-saving system of the present invention is configured so that the wastewater stored in the horizontal pipe P is pressure-transported to the sewer pipe by the conveying water supplied from the flushing device 20.

[0025] The flushing device 20 includes a water storage tank 21 for temporarily storing wastewater to be discharged into a sewer pipe, and a supply mechanism 22 for supplying the wastewater stored in the water storage tank 21 to a horizontal pipe P (see FIG. 1).

[0026] The water storage tank 21 stores miscellaneous wastewater and rainwater as transport water to be discharged into the sewer pipe (see FIG. 2). At this time, by providing a sensor 23 that detects the use of the toilet 10, the transport water stored in the water storage tank 21 can be supplied to the horizontal piping P after the wastewater has been transported to the horizontal piping P (see FIG. 1).

[0027] This water storage tank 21 is installed downstream of the miscellaneous wastewater and rainwater so that the wastewater to be discharged into the sewer pipes will flow naturally. It is also configured so that when the conveyed water is full, it overflows from the water storage tank 21 (see Figure 2). Miscellaneous wastewater refers to daily wastewater from the kitchen, bath, laundry, etc., excluding toilets.

[0028] In the illustrated example, miscellaneous wastewater and rainwater flow into the water storage tank 21 from each floor of the apartment building. The means for collecting miscellaneous wastewater and rainwater as transport water to be stored in the water storage tank 21 can be changed as desired.

[0029] Furthermore, if the water storage tank 21 is installed at a position higher than the horizontal piping P, the conveyed water can be supplied from the water storage tank 21 to the horizontal piping P simply by opening and closing the supply port of the water storage tank 21 (see FIG. 2).

[0030] The supply mechanism 22 supplies the wastewater stored in the water storage tank 21 to the horizontal piping P. For example, the supply port of the water storage tank 21 can be opened and closed freely, and the water storage tank 21 can also be provided with a submersible pump 33.

[0031] Furthermore, it is also possible to provide a sensor 23 that detects use of the toilet 10, and configure the supply mechanism 22 to operate in conjunction when this sensor 23 detects use of the toilet 10 (see Figure 1). The illustrated sensor 23 is provided in the purified water tank 12, but the sensor 23 can be installed in any location where it can detect use of the toilet 10.

[0032] By installing the water storage tank 21 on the ground, it becomes possible to transport wastewater in the horizontal piping P to the sewer pipe by the water pressure of the transport water flowing out of the water storage tank 21 (see FIG. 2). In this case, the installation location of the water storage tank 21 is not limited to outdoors, and it can also be installed indoors (see FIG. 1). Furthermore, when installing indoors, it can be installed not only in a residence, but also in a parking lot, a warehouse, etc. (not shown).

[0033] On the other hand, if the water storage tank 21 is installed at a position lower than the horizontal piping P, the conveyed water cannot be supplied by simply opening and closing the supply port of the water storage tank 21. For this reason, a submersible pump 33 is provided in the supply mechanism 22 in this case (see FIG. 4). The conveyed water is supplied from the water storage tank 21 to the horizontal piping P via the submersible pump 33.

[0034] Furthermore, by providing the water storage tank 21 with a submersible pump 33, it becomes possible to supply conveyed water to the horizontal piping P regardless of the installation location of the water storage tank 21.

[0035] The water-saving toilet 10 used in the flush toilet of the present invention can be any type of toilet 10, such as a simple flush toilet or a siphon toilet.

[0036] The toilet bowl 10 of the simple flush toilet has a drain outlet 11 that is vertically linear and faces the horizontal pipe P (see FIG. 5). A swingable valve called a flapper valve is provided at the bottom of the opening of the toilet bowl 10 to prevent odors from flowing back from the drain outlet 11.

[0037] Flapper valves include a balanced on-off valve 30 (see FIG. 5) and a forced on-off valve 40 (see FIG. 6), each of which has a different amount of flush water per flush.

[0038] The balanced on-off valve 30 is a freely swinging valve that automatically opens and closes depending on the weight of flush water and waste (see Figure 5). This balanced on-off valve 30 uses 350cc of flush water per flush, making it possible to flush with less flush water than other flapper valves.

[0039] The forced on-off valve 40 has a mechanism for storing water at the bottom of the opening of the toilet bowl 10, and is a flapper valve that is forcibly opened and closed manually or the like (see Figure 6). In the example shown, the forced on-off valve 40 is opened via a lever 41, and when opened, the forced on-off valve 40 returns to its original position by the elastic force of a spring 42. The amount of water used for one flush with the forced on-off valve 40 is 500cc, including the stored water, which is particularly effective in suppressing the backflow of odors.

[0040] There are many other types of toilets 10, including siphon type, direct water pressure type, turn trap type, etc. For example, the siphon type is a system in which the inside of the pipe is filled with water using a curved drainage channel, and waste is sucked in and discharged by the siphon action.

[0041] In addition, the direct water pressure type is a toilet flushing method in which a stream of water is poured down the toilet bowl to clean it, then a jet is sent down the drain and discharged, and after being discharged the cleaning water is poured down again, restoring the water seal in the toilet bowl.The timing of this series of steps is controlled by an electromagnetic valve to flush the toilet.

[0042] Furthermore, the turn trap system separates the water flow into three steps - flushing → draining → collecting - to discharge waste matter, and the trap is movable and electrically controlled.

[0043] By adjusting the amount of flush water used in these various types of toilets 10 to be less, the toilets 10 can be used as water-saving toilets 10 that are capable of storing waste in the horizontal piping P.

[0044] In this way, the toilet 10 used in the present invention can be of any type as long as it flushes with a volume of water that is capable of storing waste in the horizontal piping P.

[0045] The configuration of the present invention is not limited to the illustrated example, and design changes are possible as long as they do not change the gist of the present invention. [Explanation of symbols]

[0046] P Horizontal piping 10 Toilet bowl 11 Drain 12 Purified water tank 20 Flushing device 21 Water Tank 22 Supply mechanism 23 Sensors 30 Balanced on-off valve 40 Forced on-off valve 41 Lever 42 Spring

Claims

1. In a water-saving flush toilet system, waste is stored in a horizontal pipe each time a water-saving toilet is used, and the stored waste is pumped into a sewer pipe using conveying water supplied from a flushing device to the horizontal pipe. The flushing device is provided with a water storage tank for storing wastewater to be discharged into a sewer pipe as water for the flush toilet; The water storage tank is installed at a position higher than the horizontal pipe on the downstream side where either or both of the domestic wastewater and the rainwater flow into the sewer pipe, This flush toilet water-saving system is characterized in that when the supply port of the water storage tank is opened by a supply mechanism that opens and closes the supply port of the water storage tank, the conveyed water is discharged due to the difference in height, and the water pressure of the conveyed water discharged from the water storage tank is used to pressure-feed the stored wastewater into the sewer pipe.

2. 2. The flush toilet water-saving system according to claim 1, wherein the flushing device is configured to supply conveyed water from the water storage tank to the horizontal pipe using a sensor that detects the use of the toilet bowl.

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