JP5129787B2 - Bio toilet - Google Patents

Description

The present invention relates to a biotoilet provided with a treatment tank that decomposes excrement with microorganisms.

Flushing and sinking toilets cannot be used as temporary toilets or nursing toilets in the event of a disaster. For this reason, a biotoilet that decomposes excrement by microorganisms has been proposed. For example, Patent Document 1 proposes a toilet provided with a decomposition processing apparatus that performs microbial decomposition processing on organic waste such as manure and toilet paper introduced from an opening. In this decomposition processing apparatus, a rotating shaft having a stirring unit composed of a plurality of outer stirring blades and an inner stirring blade located inside thereof is horizontally installed in a processing tank having an opening, and can be driven to rotate by a driving unit. It is said that. The organic waste is agitated while being conveyed in a direction along the rotation axis along with sawdust.

Further, in Patent Document 2, natural energy supply means including natural energy collection means using wind power and / or sunlight, and a battery that stores electric energy generated by the natural energy collection means, and natural energy supply means. A toilet that treats organic waste by promoting activation of microorganisms in the sawdust for decomposition treatment and organic waste using the electrical energy supplied from the house, and the natural energy supply means and the electrical control unit of the toilet are accommodated Outdoor toilets with control boxes have been proposed.

JP 2001-120460 A JP 2004-204635 A

However, in the case of a conventional biotoilet, activation of microorganisms for decomposing the excrement is not sufficient, and it takes a long time (for example, about 2 to 3 hours) for the excrement decomposition process. In order to shorten the time required for the decomposition process of excrement, the amount of microorganisms must be increased by enlarging the treatment tank containing microorganisms, which requires not only a large installation space but also costs. There's a problem.

This invention is made | formed in view of this situation, and it aims at providing the compact biotoilet which can decompose | disassemble excrement in a short time compared with the former by activating microorganisms.

In order to achieve the above object, the present invention provides a treatment tank in which an upper surface is an opening, a microorganism for decomposing waste excreted from the opening, and a microorganism carrier for holding the microorganism are accommodated, In a biotoilet provided on a rotating shaft installed in a treatment tank and having a stirring blade for stirring the carrier for microorganisms , biowater containing an enzyme presumed to contribute to the activation of the microorganisms is stored. A tank, an injection nozzle for injecting the bio water into the treatment tank when the microorganism carrier is agitated, and a pump for supplying the bio water in the tank to the injection nozzle. It is said.

Bio-water is an aqueous solution produced by mixing microorganisms such as actinomycetes and bacilli and enzymes with purified water. In addition to the deodorizing effect at the time of spraying and stirring, by spraying bio-water into the processing tank in which the microorganisms for decomposing the excrement and the microorganism carrier holding the microorganisms are accommodated, the microorganisms in the processing tank Is activated and fermentation is promoted. As a result, excrement can be decomposed in a shorter time than in the past, and the biotoilet can be made compact.

Further, the timing for injecting the bio-water treatment tank By the time agitation of microbial carrier, it is possible to uniformly supply the bio water microorganisms carrier housed in the processing bath.

Further, in the biotoilet according to the present invention, the stirring of the carrier for microorganisms is repeated a plurality of cycles with a pause, so that the bio water is sprayed from the spray nozzle into the treatment tank at the beginning of each stirring cycle. It may be.
In this way, not only electricity consumption and bio-water can be saved, but also fermentation by microorganisms is promoted by providing a downtime.

In the biotoilet according to the present invention, the agitation of the carrier for microorganisms and the jet of the biowater may be interlocked with the opening / closing operation of the toilet lid, thereby generating and excreting excreta. It is associated with the decomposition process of the waste, and the waste can be efficiently decomposed.

In the biotoilet according to the present invention, the microorganisms in the treatment tank are activated by injecting the bio water into the treatment tank in which the microorganisms for decomposing the excrement and the carrier for microorganisms holding the microorganisms are accommodated, It is possible to decompose the excrement in a shorter time (within 1 hour) than in the past. As a result, the biotoilet can be made compact.

It is side sectional drawing of the biotoilet which concerns on one embodiment of this invention. It is a front sectional view of the biotoilet. It is a block diagram which shows the hardware constitutions of the biotoilet. It is a sequence diagram which shows the control flow of the biotoilet.

Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention. In the following description, for convenience, when sitting on the toilet seat, the side on which the foot is located is referred to as the “front” side, and the back side is referred to as the “rear” side.

1 and 2 show an embodiment of a biotoilet 10 according to the present invention. A biotoilet 10 according to an embodiment of the present invention has a bowl portion 33 for receiving excrement (feces and urine) in a box-shaped casing 11 having a lid (toilet lid) 28, and an upper surface as an opening. The processing tank 12 disposed immediately below the section 33, a stirring means for stirring the carrier for microorganisms accommodated in the processing tank 12, a bio water injection means for injecting bio water V into the processing tank 12, and a fan 23 The heater 32 and the control unit 22 for controlling these devices are housed. The casing 11 has a width: about 400 mm, a length: about 580 mm, a height including the lid 28 (closed state): about 480 mm, and is made of synthetic resin.

The bowl portion 33 is made of synthetic resin such as ABS resin or polypropylene, and a circular opening is formed on the lower surface, and a long oval opening communicating with the circular opening is formed on the upper surface. A toilet seat 29 is attached to the upper surface of the bowl portion 33. The toilet seat 29 is pivotally supported in the vertical plane with the rear end portion pivotally supported on the upper surface of the bowl portion 33.
On the other hand, the treatment tank 12 is made of stainless steel and has a long box shape with a semicylindrical bottom (see FIG. 2). The treatment tank 12 accommodates microorganisms (not shown) that decompose the excrement and toilet paper, and a microorganism carrier (not shown) that holds the microorganisms. As the microorganism, aerobic bacteria conventionally used in biotoilet or the like can be used, and for example, Gram-negative bacilli such as Pseudomonas, Acinetobacter, Enterobacter, and the like can be used. Further, as the carrier for microorganisms, a carbonized chip obtained by carbonizing sawdust or wood chips is preferable.

The stirring means includes a rotating shaft 13 that horizontally penetrates the front end surface and the rear end surface of the treatment tank 12, a plurality of stirring blades 14 that are disposed along the rotating shaft 13 and that stir the microorganism carrier, and the rotating shaft 13. And a driving mechanism for driving. Each stirring blade 14 is composed of 2 to 4 blades and extends radially from the rotary shaft 13. The drive mechanism includes a motor 15 installed on the front side of the processing tank 12, a one-way clutch 16 attached to the shaft of the motor 15, a main sprocket 17 attached to the front end portion of the rotating shaft 13, A sub-sprocket 18 installed above the main sprocket 17 and a chain 19 for connecting these gears (see FIG. 2). When the motor 15 connected to a power source (not shown) is driven, the main sprocket 17 and the sub sprocket 18 are rotated via the chain 19, and the rotating shaft 13 is rotated together with the stirring blade 14 to stir the microorganism carrier.

As shown in FIG. 1, a connecting portion 20 for detachably attaching the handle 21 is provided on the front side of the sub sprocket 18. When electric power cannot be used, the rotating shaft 13 can be rotated by turning the handle 21 attached to the connecting portion 20. At this time, by utilizing the characteristics of the one-way clutch 16, the handle 21 is rotated in a direction that is not connected to the motor 15, so that the load is reduced and the rotating shaft 13 can be easily rotated.

The bio water injection means for injecting the bio water V into the treatment tank 12 is installed on the bottom surface of the toilet 24 and the tank 24 for storing the bio water V for activating microorganisms, and injects the bio water V into the treatment tank 12. And a pump 25 for feeding the bio-water V in the tank 24 to the spray nozzle 26, and pipes 30 and 31 connecting these devices.

Bio-water V is an aqueous solution produced by mixing microorganisms such as actinomycetes and bacilli and enzymes presumed to contribute to deodorization and microorganism activation in purified water. As the koji mold, for example, a gram positive koji mold such as Bacillus or a gram negative koji mold such as Pseudomonas can be mixed and used.

The heaters 32 are respectively installed on opposite side portions of the processing tank 12 for the purpose of setting the temperature in the processing tank 12 to be suitable for the activity of microorganisms.
The fan 23 is installed on the rear surface of the casing 11 for the purpose of deodorizing by exhaust.

The lid 28 installed on the upper surface of the casing 11 is pivotally supported on the rear end portion of the upper surface of the casing 11 at its rear end, and rotates within a vertical plane. By opening and closing the lid 28, the open / close switch 27 is activated, and the opening and closing of the lid 28 is detected. In the present embodiment, one terminal 27 a of the open / close switch 27 is attached to the rear end of the lid 28, and the other terminal 27 b of the open / close switch 27 is attached to the upper rear end of the casing 11. When the terminal 27a is opened or closed, the terminal 27a and the terminal 27b are in contact with or not in contact with each other, so that the opening / closing of the lid 28 is detected.

The control unit 22 includes an integrated circuit, and has a function of controlling the motor 15, the pump 25, the heater 32, and the fan 23 based on a signal generated by the opening / closing switch 27, as will be described later. It is installed on the side part.

Next, a control process executed in the biotoilet 10 having the above configuration will be described with reference to FIGS. 3 and 4.
(1) When the lid 28 of the casing 11 is opened, an open signal is transmitted from the open / close switch 27 to the control unit 22. When receiving the open signal, the control unit 22 starts the fan 23.

(2) When the lid 28 is closed, a closing signal is transmitted from the open / close switch 27 to the control unit 22. The controller 22 stops the fan 23 after a few seconds have elapsed after receiving the closing signal.
(3) Next, the control unit 22 turns on the heater 32 and heats the treatment tank 12. Thereby, the inside of the processing tank 12 is maintained at a temperature state suitable for the activity of microorganisms. In addition, the activity temperature of microorganisms was -5 degreeC-70 degreeC according to inventors' experiment.

(4) At the same time, the motor 15 is intermittently operated by an instruction signal from the control unit 22, and the microorganism carrier is stirred by the stirring blade 14 that rotates together with the rotating shaft 13. In the present embodiment, a stirring cycle consisting of a stirring state for 5 minutes and a subsequent resting state for 10 minutes is repeated three times (total time: 45 minutes). Further, the pump 25 is activated at the beginning of each stirring cycle according to the instruction signal from the control unit 22, and the bio-water V stored in the tank 24 passes through the pipes 30 and 31 from the injection nozzle 26 into the treatment tank 12. It is injected for several seconds.
(5) When all the stirring cycles are completed, the control unit 22 turns off the heater 32. By these series of processes, the waste in the treatment tank 12 is decomposed into carbon dioxide gas and water.

When the lid 28 is opened during the above series of operations, the operations up to that point are cleared and the operations after (1) are executed again.

Although one embodiment of the present invention has been described above, the present invention is not limited to the configuration described in the above-described embodiment, and is within the scope of matters described in the claims. Other possible embodiments and modifications are also included. For example, in the above embodiment, the stirring blades have the same length, but stirring blades having various lengths may be provided. Moreover, in the said embodiment, although the stirring cycle was 3 times, it is good also as 2 times or less or 4 times or more.

10: bio toilet, 11: casing, 12: treatment tank, 13: rotating shaft, 14: stirring blade, 15: motor, 16: one-way clutch, 17: main sprocket, 18: sub sprocket, 19: chain, 20: Connection part, 21: handle, 22: control part, 23: fan, 24: tank, 25: pump, 26: injection nozzle, 27: open / close switch, 27a, 27b: terminal, 28: lid, 29: toilet seat, 30, 31: Piping, 32: Heater, 33: Bowl part, V: Bio water

Claims (3)

An upper surface is an opening, a treatment tank containing a microorganism for decomposing the excrement introduced from the opening and a carrier for microorganisms holding the microorganism, and a rotating shaft installed in the treatment tank In a biotoilet having a stirring blade that is disposed and stirs the carrier for microorganisms,
A tank for storing bio water containing an enzyme presumed to contribute to the activation of the microorganism , an injection nozzle for injecting the bio water into the treatment tank when stirring the carrier for microorganisms, and the tank And a pump for feeding the bio-water to the spray nozzle. The biotoilet according to claim 1 , wherein the stirring of the microorganism carrier is repeated a plurality of cycles with a pause, and at the initial stage of each stirring cycle, the bio-water is sprayed from the spray nozzle into the treatment tank. Characteristic biotoilet. The biotoilet according to claim 1 or 2 , wherein the stirring of the carrier for microorganisms and the jet of the biowater are interlocked with the opening / closing operation of the toilet lid.

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