JP2001040731A - Method and device for preventing scale adhesion to toilet piping using ozone water - Google Patents

Abstract

PROBLEM TO BE SOLVED: To positively prevent the adhesion of scale (urolith) to toilet piping of a vehicle or the like using ozone water. SOLUTION: A toilet bowl washing device is provided with a wash water tank 36 connected through a flush water piping 34 to the upstream of a urinal 10, and an adjusting tank 14 provided in the downstream of the uninal 10. a toilet pipe 16 is connected to the adjusting tank 14, and an ozonizer 38 is connected to the flush water pipe 34 through an ozone filling pipe 40 to allow ozone water to flow to the toilet pipe 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for preventing scale (urine stone) from adhering to toilet plumbing using ozone water in a Shinkansen vehicle, an express vehicle, other vehicles, and the like. .

[0002]

2. Description of the Related Art A small amount of calcium is contained in urine, and when excreted urine is left undisturbed, calcium in the urine changes into a component insoluble in water due to the action of bacteria. "Urishi" is a substance in which the water-insoluble calcium content and the putrefactive organic matter are mixed intricately and firmly adhered as a scale to toilet pipes, tanks, and the like. The details of the mechanism of urinary stone formation are as follows. (1) The excreted urine comes into contact with the urease enzyme secreted by the bacteria. (2) Urea ((NH ₂ ) ₂ C by urease enzyme
O) is decomposed to generate ammonia. (3) Urine changes to alkaline due to ammonia. (4) By becoming alkaline, the calcium dissolved in the urine precipitates out and becomes calcium carbonate, calcium phosphate and the like. (5) The calcium component accumulates to form urine stone. (6) The gap between the urine stones becomes a hotbed of bacteria, and bacteria grow. Then, the above (1) to (6) are repeated, and once the urolith adheres, the urolith rapidly grows.

In toilets (especially urinals for men) installed in Shinkansen vehicles, limited express vehicles, other vehicles, etc., urine stones are extremely troublesome because urine stones adhere to toilet plumbing. Specifically, as an example of the related art, as shown in FIG.
Urine excreted into the urinal flows into the regulating tank (sub-tank) 14 from the outlet 12 of the urinal 10 and passes through the urinal drain pipe (toilet piping) 16 connected to the bottom of the regulating tank 14 to the sewage tank 18. Will be stored. At this time, the adjusting tank outlet 22 which is a connection portion between the bottom of the adjusting tank 14 and the substantially vertical portion 20 of the urinal drain pipe 16, the substantially horizontal portion 24 of the urinal drain pipe 16, and the substantially vertical portion of the urinal drain pipe 16 Urinary stones 30 adhere to places where urine tends to stay, such as a sewage tank inlet 28 which is a connection between the sewage tank 26 and the sewage tank 18.

[0004] The urine stones adhering to the toilet plumbing firmly adhere to the inner surface of the plumbing as time passes, the urine stones on the inner surface of the plumbing prevent the flow of water, and further promote the growth of urine stones. Clogging occurs frequently. Bacteria inhabit the inside of the porous urine stone, and eventually emit a strong odor. However, it is very difficult to remove urine stones from a toilet pipe having a complicated bend in a narrow space such as a vehicle.

[0005] As a conventional countermeasure for preventing adhesion of urine stones in toilet plumbing, the following toilet plumbing cleaning method is known. (1) A method of killing bacteria with a bactericide such as chlorine. (2) A method of injecting an acid such as hydrochloric acid to neutralize the alkali. (3) A method of injecting an inhibitor to inhibit the action of urease enzyme that degrades urea.

[0006]

However, in the above-mentioned method (1), it is difficult to kill all the bacteria due to many kinds of bacteria. Will also have an adverse effect. In the above method (2), a small amount of a weak acid is generally injected because a strong acid causes problems of corrosion and terminal treatment.
The effect varies widely. In the above method (3), since the inhibitor does not suppress the growth of bacteria itself,
There is a problem that individual maintenance is required.

[0007] A method of increasing the detergency of toilet plumbing by discharging a large amount of water into the toilet or adding a chemical such as a surfactant to the washing water is also considered. There is a problem that the capacity is limited and it is not easy to replenish or replace the medicine, and the use of the medicine increases the cost. In addition, measures to eliminate the bent part of the piping, make the piping thicker or shorter, and make it harder for urine to adhere to the piping are conceivable, but significant vehicle remodeling is required,
Large remodeling costs are required. Further, the method of periodically disassembling and cleaning the toilet pipes or periodically replacing the pipes is cumbersome and increases the cost.

The present invention has been made to improve the above situation, and an object of the present invention is to flow ozone water having much higher sterilizing ability than a sterilizing agent such as chlorine into toilet pipes as washing water. It is an object of the present invention to provide a method and an apparatus for preventing scale adhesion of toilet piping by ozone water, which can kill bacteria producing urine stone and prevent adhesion of urine stone. Another object of the present invention is to provide a method and an apparatus for preventing scale adhesion of toilet pipe by ozone water, since ozone is decomposed into a substance harmless to the human body in a short time, has no persistence, and facilitates the final treatment of sewage. Is to provide.

[0009]

Means for Solving the Problems To achieve the above object, a method for preventing scale adhesion of toilet piping by ozone water according to the present invention is to wash and sterilize ozone water as washing water in toilet piping. It is configured to prevent urine stones from adhering to the toilet plumbing (see FIGS. 1 and 2). In this method, ozone water is configured to flow into a flush water pipe or / and a regulating tank below the toilet (see FIG. 1). Also, cleaning with ozone water,
It is desirable to perform it every time the toilet is used or at a certain time interval. In some cases, cleaning / sterilization by flowing ozone water and addition of an acidic substance for neutralizing alkali to the cleaning water may be used in combination. Hydrochloric acid or the like is used as the acidic substance.

[0010] The apparatus for preventing scale adhesion of toilet piping by ozone water according to the present invention includes a flush water tank connected via a flush water pipe upstream of the toilet, and an adjustment tank downstream of the toilet. In a toilet flushing apparatus in which a toilet pipe is connected to a tank, an ozonizer is connected to a flush water pipe via an ozone injection pipe (see FIGS. 1 and 2).

Further, the apparatus of the present invention includes a flush water tank connected via a flush water pipe on the upstream side of the toilet, an adjustment tank on the downstream side of the toilet, and a toilet pipe connected to the adjustment tank. In the toilet flushing apparatus, an ozone water supply pipe into which ozone is injected from an ozonizer is connected to the adjustment tank (see FIG. 1).

Further, the apparatus of the present invention includes a flush water tank connected via a flush water pipe on the upstream side of the toilet and an adjustment tank on the downstream side of the toilet, and a toilet pipe is connected to the adjustment tank. In the toilet flushing apparatus, an ozonizer is connected to a flush water pipe via an ozone injection pipe, and an ozone water supply pipe through which ozone is injected from the ozonizer is connected to an adjustment tank (FIG. 1). reference).

In these apparatuses, in order to generate high-concentration ozone water, it is desirable to connect an ozone injection pipe from the ozonizer immediately before the flush water pipe connecting the flush water tank and the toilet (see FIG. 1). 1, see FIG. 2). Further, it is desirable to connect an ozone injection pipe from the ozonizer to a downstream side of the flush valve of the flush water pipe so that ozone is generated at atmospheric pressure (FIG. 1,
(See FIG. 2).

In order to prevent flash water from flowing back to the ozonizer, it is desirable to provide a backflow prevention valve in the ozone injection pipe (see FIG. 2). Further, in order to prevent ozone from flowing out into the room where the toilet is installed, it is desirable to connect an exhaust pipe having a vacuum exhaust pump to the flush water pipe (see FIG. 2). Further, in order to prevent backflow of the flush water to the vacuum pump, it is desirable to provide a backflow prevention valve on the exhaust pipe inlet side of the exhaust pipe (see FIG. 2).

To control the injection of ozone, a human sensor and a sequencer connected to the sensor are provided near the toilet (see FIG. 2). In this case, a human detection sensor and a sequencer connected to this sensor are provided near the toilet, and this sequencer is connected to the flash valve, the backflow prevention valve of the ozone injection pipe and the backflow prevention valve of the exhaust pipe, and the sequencer Desirably, the flash valve and the two check valves are configured to be controlled (see FIG. 2).

In order to increase ozone generation efficiency, it is desirable to provide an air dryer in the air supply pipe to the ozonizer (see FIG. 2). It is preferable that a compressed air supply pipe provided with a pressure reducing valve is connected as an air supply pipe to the air dryer (see FIG. 2). The vehicle is provided with an air compressor for producing compressed air, and it is desirable to use compressed air from an existing air compressor for air injection and vacuum device driving. In these devices, it is desirable to apply a urinal installed in a vehicle as a toilet (see FIGS. 1 and 2).

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with respect to an example of toilet piping in a Shinkansen vehicle, an express vehicle, and other vehicles. However, the present invention is not limited to the following embodiments. The present invention can be applied not only to a toilet pipe installed in an object or a place other than a vehicle but also to a toilet pipe which can be appropriately changed and implemented. FIG. 1 shows a device for preventing scale adhesion of toilet piping by ozone water according to a first embodiment of the present invention. As shown in FIG. 1, urine excreted in the urinal 10 is
Flows into an adjustment tank (sub-tank) 14 from a discharge port 12, and is stored in a sewage tank 18 through a urinal drain pipe (toilet pipe) 16 connected to the bottom of the adjustment tank 14. In the toilet plumbing shown in FIG. 1, the portion to which urine stones easily adhere is the adjustment tank outlet 22 which is a connection between the bottom of the adjustment tank 14 and the substantially vertical portion 20 of the urinal drain pipe 16, and the urinal drain pipe 16. A substantially horizontal portion 24, a substantially vertical portion 26 of the urinal drain pipe 16, and a sewage tank inlet 28, which is a connection portion between the sewage tank 18, and the like. In the present embodiment, the urinal 10 is a male urinal, but other types of urinals may be applied.

A flush water tank 36 is connected upstream of the urinal 10 via a flush water pipe 34 having a flush valve 32, and an adjustment tank 14 is disposed downstream of the urinal 10 as described above. Is provided. An ozonizer (ozone generator) 38 is connected to the flush water pipe 34 via an ozone injection pipe 40, and an ozone water supply pipe 42 is connected to the adjustment tank 14.
The ozone water supply pipe 42 is formed by merging a flush water pipe 44 branched from an upstream side of the flush valve 32 of the flush water pipe 34 and an ozone injection pipe 46 for injecting ozone into the flush water pipe 44. is there. This ozone injection pipe 46 is connected to the ozonizer 38. It is desirable to connect the ozone injection pipe 40 from the ozonizer 38 immediately before the urinal of the flush water pipe 34 so as to generate high-concentration ozone water. Instead of sharing the ozonizer 38, the ozone injection pipe 46 may be connected to a separate ozonizer. In addition, washing water piping 4
4 may be directly connected to the washing water tank 36. The above configuration is for the case where ozone water is supplied to both the flush water pipe 34 and the adjustment tank 14.
4. It is also possible to configure so that ozone water flows into any of the adjustment tanks 14.

In the apparatus for preventing scale from adhering to a toilet pipe constructed as described above, ozone water is caused to flow through at least one (both or one) of the flush water pipe 34 and the adjustment tank 14 and the toilet located downstream of the adjustment tank 14. The inside of the pipe 16 is cleaned and sterilized. Cleaning with ozone water is desirably performed every time the urinal 10 is used or at regular intervals. In some cases, an acidic substance for neutralizing the alkalinity due to the generation of ammonia is added to the washing water in combination with washing and sterilization by flowing ozone water.

FIG. 2 shows an apparatus for preventing scale adhesion of toilet piping by ozone water according to a second embodiment of the present invention. A flush water tank 36 is provided at the upper part of the urinal 10 through a flush water pipe 34 having a flush valve 32.
Is connected. An ozonizer 38 is connected to an outlet of the flush valve 32 of the flush water pipe 34 via an ozone injection pipe 40. Ozonizer 38
Although it is possible to connect the ozone injection pipe 40 from the washing water tank 36 to the flush water tank 36, it is possible to connect the flush water pipe 34 to the outlet of the flush valve 32 immediately before the urinal to supply high-concentration ozone water. It is desirable that the urinal 10 be generated and flushed. Also,
With this configuration, ozone can be generated at atmospheric pressure.

The ozone injection pipe 40 is provided with a backflow prevention valve 48 so that the flush water does not flow back to the ozonizer 38. Further, a vacuum pump (vacuum pump) 50 is connected to the flush water pipe 34 so that ozone does not flow out into the room (vehicle) in which the urinal is installed.
Is connected to an outdoor exhaust pipe 52 having Further, a backflow prevention valve 54 is provided on the exhaust pipe 52 at the inlet side of the vacuum exhaust pump 50 so that the flush water does not flow backward to the vacuum exhaust pump 50.

In the vicinity of the urinal 10, a human sensor 56,
And a sequencer (controller) connected to the sensor 56
58 is provided to control the injection of ozone into the flush water. For details, see Sequencer 5
8, flash valve 32, check valve 48, 54
Is connected to the flash valve 32 by the sequencer.
And the backflow prevention valves 48 and 54 are controlled.

In order to increase the efficiency of ozone generation in the ozonizer 38, an air dryer 62 is provided in an air supply pipe 60 to the ozonizer 38. Normally, compressed air is used in a vehicle, so it is desirable to use this compressed air as the raw air for the ozonizer. In this case, the air supply pipe 60 is a compressed air supply pipe. 64 is a pressure reducing valve for reducing the pressure of the compressed air.

In the configuration shown in FIG.
The sequencer 58 determines whether or not there is a person in front of the urinal 10.
Tell Flash valve 32, backflow prevention valve 4
Opening and closing of 8, 54 are controlled by a sequencer 58.
The flush valve 32 opens for a few seconds when a person leaves the urinal 10, and flushes flush water (ozone water) containing ozone into the urinal 10. The backflow prevention valve 48 of the ozone injection pipe 40 opens when the flash valve 32 is closed, and injects ozone into the cleaning water (flash water) remaining in the flash water pipe 34. Flush water pipe 3
4, a rising portion 66 is provided, and when the flash valve 32 is closed, water is always stored in the flush water pipe 34. Ozone (ozone gas) is supplied to a lower portion of the rising portion 66. The injection is configured to generate an amount of ozone water necessary for one flush. As described above, the flush water pipe 34 having the rising portion 66 serves as a flush water (wash water) storing portion.

The compressed air is supplied to the ozonizer 38 by the pressure reducing valve 6.
4. It is supplied through the dryer 62. By drying the air with the dryer 62, the generation efficiency of ozone is increased. The backflow prevention valve 54 of the exhaust pipe 52 operates in conjunction with the backflow prevention valve 48 of the ozone injection pipe 40, and exhausts extra ozone (ozone gas) to the outside through the exhaust pipe 52. Further, by closing the backflow prevention valves 48 and 54, backflow of the washing water is prevented. The vacuum exhaust pump (vacuum pump) 52 discharges excess ozone gas in the flush water pipe 34 through the backflow prevention valve 54 as described above. Other configurations and operations are the same as those in the first embodiment.

[0026]

As described above, the present invention has the following effects. (1) By flowing ozone water having strong sterilizing power through toilet pipes for cleaning and sterilization, it is possible to reliably prevent urine stones from adhering to toilet pipes of vehicles and the like. (2) Since ozone decomposes into a substance harmless to the human body in a short time, there is no persistence, and the final treatment of sewage is easy.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an apparatus for preventing scale adhesion of toilet piping by ozone water according to a first embodiment of the present invention.

FIG. 2 is a schematic configuration diagram showing an apparatus for preventing scale adhesion of toilet piping by ozone water according to a second embodiment of the present invention.

FIG. 3 is a schematic structural explanatory view showing an example of a state of scale adhesion of a toilet pipe in a conventional toilet bowl.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Urinal 12 Discharge port 14 Adjustment tank (sub tank) 16 Urinal discharge pipe (toilet piping) 18 Sewage tank 20 Substantially vertical part 22 Adjustment tank outlet part 24 Substantially horizontal part 26 Substantially vertical part 28 Sewage tank entrance part 30 Urinary stone 32 Flush valve 34 Flush water pipe 36 Wash water tank 38 Ozonizer 40, 46 Ozone injection pipe 42 Ozone water supply pipe 44 Wash water pipe 48, 54 Backflow prevention valve 50 Vacuum exhaust pump 52 Exhaust pipe 56 Person detection sensor 58 Sequencer 60 Air supply pipe 62 air dryer 64 pressure reducing valve 66 rising section

Continued on the front page (72) Inventor Takeshi Nakajima 1-1, Kawasaki-cho, Akashi-shi, Hyogo Kawasaki Heavy Industries, Ltd. Inside the Akashi Factory (72) Inventor Kiyomori Nakano 2-1-1, Wadayama-dori, Hyogo-ku, Kobe Kawasaki Inside the Hyogo Plant of Heavy Industries, Ltd. (72) Inventor Kazushige Sugimoto 1-1, Kawasaki-cho, Akashi-shi, Hyogo Prefecture F-term in the Akashi Plant of Kawasaki Heavy Industries, Ltd. F-term (reference) BB03 BB81 CD11 CD42 CD43 3B201 AA13 AB51 BB92 CD11 CD42 CD43

Claims (17)

[Claims] 1. Prevention of urine stones from adhering to toilet pipes by flowing ozone water as cleaning water into the toilet pipes to wash and sterilize the toilet pipes. Method. 2. The method according to claim 1, wherein the ozone water is supplied to a flush water pipe and / or an adjustment tank below the toilet bowl. 3. The method according to claim 1, wherein the washing with the ozone water is performed every time the toilet is used or at regular intervals. 4. The toilet plumbing with ozone water according to claim 1, wherein cleaning and sterilization by flowing ozone water and addition of an acidic substance for neutralizing alkali to the cleaning water are used in combination. Scale adhesion prevention method. 5. A toilet flushing apparatus comprising: a flush water tank connected upstream of a toilet via a flush water pipe; a regulating tank downstream of the toilet; and a toilet pipe connected to the regulating tank. An ozonizer is connected to the flush water pipe via an ozone injection pipe to prevent the scale from adhering to the toilet pipe using ozone water. 6. A toilet flushing apparatus comprising: a flush water tank connected to a toilet bowl via a flush water pipe; a regulating tank downstream of the toilet; and a toilet pipe connected to the regulating tank. An ozone water supply pipe into which ozone is injected from an ozonizer is connected to the adjustment tank, and a scale sticking prevention apparatus for toilet pipes using ozone water is provided. 7. A toilet flushing apparatus comprising: a flush water tank connected via a flush water pipe on an upstream side of a toilet; a regulating tank on a downstream side of the toilet; and a toilet pipe connected to the regulating tank. An ozonizer is connected to the flush water pipe via an ozone injection pipe, and an ozone water supply pipe for injecting ozone from the ozonizer is connected to the adjustment tank. apparatus. 8. In order to generate high concentration ozone water,
The apparatus for preventing scale adhesion of toilet pipe by ozone water according to claim 5 or 7, wherein an ozone injection pipe from the ozonizer is connected immediately before a flush water pipe connecting the flush water tank and the toilet. 9. The scale of a toilet pipe with ozone water according to claim 5, wherein an ozone injection pipe from the ozonizer is connected to a downstream side of a flush valve of the flush water pipe so that ozone is generated at atmospheric pressure. Anti-adhesion device. 10. The apparatus for preventing scale adhesion of toilet pipe by ozone water according to claim 8, wherein a backflow prevention valve is provided in the ozone injection pipe in order to prevent flash water from flowing back to the ozonizer. 11. The flush water pipe is connected to an outdoor exhaust pipe equipped with a vacuum exhaust pump in order to prevent ozone from flowing into the room where the toilet is installed.
Or a device for preventing scale adhesion of toilet piping using ozone water according to item 10. 12. The device for preventing scale adhesion of ozone water to toilet pipe according to claim 11, wherein a backflow prevention valve is provided on the vacuum exhaust pump inlet side of the exhaust pipe in order to prevent flash water from flowing back to the vacuum exhaust pump. . 13. The scale of a toilet pipe with ozone water according to claim 5, wherein a human detection sensor and a sequencer connected to the sensor are provided near the toilet to control the injection of ozone. Anti-adhesion device. 14. A human detection sensor and a sequencer connected to the sensor are provided near the toilet, and the sequencer is connected to a flash valve, a backflow prevention valve of an ozone injection pipe, and a backflow prevention valve of an exhaust pipe, 14. The apparatus according to claim 13, wherein the flush valve and the two backflow prevention valves are controlled by a sequencer. 15. An air dryer is provided in an air supply pipe to an ozonizer to increase ozone generation efficiency.
15. A device for preventing scale adhesion of toilet plumbing with ozone water according to any one of claims 14 to 14. 16. As an air supply pipe to an air dryer,
16. A compressed air supply pipe having a pressure reducing valve is connected.
A device for preventing scale adhesion of toilet plumbing by the described ozone water. 17. The apparatus according to claim 5, wherein the toilet is a urinal installed in a vehicle.