JPH11100882A - Vacuum drainage system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect clogging of a vacuum drainage system so as to prevent water from overflowing from a sanitary fixture such as a toilet bowl. SOLUTION: At the normal time, when a washing switch 17 is pressed, a feed valve 13 and a vacuum valve 4 are opened to feed wash water to a bowl 11, and contents in the bowl 11 are discharged to a vacuum piping 5. When the washing switch 17 is pressed at the time of a toilet bowl 10 being clogged, the feed valve 13 and vacuum valve 4 are opened, but since the detected vacuum degree of a vacuum degree sensor 20 remains high, the feed valve 13 is closed, and an alarm 22 is actuated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum drainage system such as a vacuum flush toilet in which a vacuum pipe is connected via a vacuum valve, and has a countermeasure particularly when a drainage port of a sanitary appliance is clogged. It relates to vacuum drainage equipment.

[0002]

2. Description of the Related Art JP-A-4-38336, JP-A-7-3
As described in, for example, No. 857, in a vacuum toilet system in which a vacuum pipe is connected to a drain port of a toilet via a vacuum valve, flush water is supplied to the toilet and the vacuum valve is opened, and the toilet bowl is opened. Discharge the contents to a vacuum line.

[0003] As shown in FIG.
A configuration in which a working chamber 2 is arranged on a side portion of a rubber tube 1 and a spring 3 for biasing the rubber tube 1 in a direction to close the rubber tube 1 is arranged in the working chamber 2 is often used. Vacuum piping 5 connected to the outflow port of the vacuum valve 4
And the working chamber 2 are connected by a negative pressure transmission pipe 6, and a control valve 7 is provided in the middle of the negative pressure transmission pipe 6.

By opening the control valve 7,
When a negative pressure in the vacuum pipe 5 is introduced into the working chamber 2,
The diameter of the rubber tube 1 is expanded as shown in FIG. When the control valve 7 is closed, the working chamber 2 is closed.
When the introduction of the negative pressure to the rubber tube 1 is stopped, the diameter of the rubber tube 1 is reduced by the spring 3, and the valve is brought into the closed state shown in FIG.

[0005] As shown in FIG. 2 (b), when the vacuum valve 4 is opened, the height of the vacuum valve 4 is reduced so that the height of the vacuum valve 4 becomes smaller as is clear from the comparison between the broken line and the solid line. Is deformed. Conversely, when the vacuum valve 4 closes, the vacuum valve 4 extends.

FIG. 3 is a view showing an installation configuration of a vacuum toilet provided with the vacuum valve 4.

A water spray pipe 12 is provided around the rim of the upper edge of the bowl 11 of the toilet bowl 10, and flush water can be supplied to the water spray pipe 12 through a water supply valve 13 and a water supply pipe 14. On the bottom surface of the water pipe 12, water holes are formed at predetermined intervals. The drain of the bowl 11 is connected to a vacuum pipe 5 through a vacuum valve 4.
Is connected. The vacuum pipe 5 is connected to a negative pressure source having a vacuum pump.

A check valve 15 and a control valve 7 are provided in the middle of a negative pressure transmission pipe 6 which connects the vacuum pipe 5 downstream of the vacuum valve 4 to the working chamber 2 of the vacuum valve 4. The control valve 7 and the water supply valve 13 include a controller 16.
Receives a control signal. A signal is input to the controller 16 from the cleaning switch 17.

When the flush switch 17 is depressed in the vacuum toilet equipment configured as described above, the water supply valve 13 and the vacuum valve 4 are opened, and the flush water is supplied to the bowl 11 and the bowl 1
1 is sucked and discharged into the vacuum pipe 5.

When a predetermined time has elapsed since the opening of the water supply valve 13 and the vacuum valve 4, the vacuum valve 4 is first closed, and then the water supply valve 13 is closed. As a result, the pot 11 enters a use standby state in which the accumulated water is collected.

[0011]

As described above, a vacuum toilet is intended to suck and discharge filth into a vacuum pipe by negative pressure, but the filth (especially papers) is compressed by negative pressure to form a lump and drainage. May block mouth.

If the washing switch 17 is pressed again in a state where such clogging has occurred, water is supplied again, and water may overflow from the bowl 11.

[0013] It is an object of the present invention to provide a vacuum drainage system for preventing water from overflowing from a sanitary device when such a sanitary device such as a toilet is clogged.

[0014]

In a vacuum drainage system according to the present invention (claim 1), a negative pressure source is connected to a drainage flow path of a sanitary fixture, and a vacuum valve operated by negative pressure is provided in the drainage flow path. In the vacuum drainage system described above, an operating state detecting means for detecting an operating state of the vacuum valve and a vacuum degree detecting for detecting a degree of vacuum in the drainage flow path are provided.

In such a vacuum drainage system, the degree of vacuum of the drainage flow path detected by the vacuum degree detection means is high (close to vacuum) even though it is detected that the vacuum valve has been opened.
If the state remains, the sanitary fitting is clogged. Therefore, the clogging of the sanitary fitting can be detected by detecting the operating state of the vacuum valve and the degree of vacuum in the drain passage.

In the present invention, it is preferable to generate an alarm when such clogging is detected.

Further, when such clogging is detected, it is preferable to stop the water supply means and prevent the washing water from being supplied to the pot.

Further, as described in claim 4, it is preferable that after the water supply means is stopped, the vacuum valve is opened again, or an alarm is generated when the degree of vacuum is still high as described in claim 5. .

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a system diagram of a vacuum toilet apparatus according to an embodiment.
Is provided, and the detection signal is input to the controller 16. Further, the vacuum valve 4 is provided with a valve opening sensor 21 for detecting an opening state of the vacuum valve 4, and a detection signal of the valve opening sensor 21 is also input to the controller 16. As shown in FIG. 2, since the vacuum valve 4 has operating characteristics of contracting when closed and expanding when opened, the valve opening sensor 21 is, for example, a limit sensor for detecting the expansion of the vacuum valve 4. Etc. can be used.

The controller 16 includes a control valve 7
In addition to outputting a valve opening signal and a valve closing signal to the water supply valve 13, respectively, an operation signal can be output to the alarm 22. The alarm 22 has a function of notifying that clogging has occurred by sound, light, or the like.

The other components in FIG. 1 are the same as those in FIG. 3, and the same reference numerals indicate the same parts.

In the vacuum toilet equipment configured as described above, when the flush switch 17 is pressed in a normal state where the toilet 10 is not clogged, the controller 16 outputs a valve opening signal to the water supply valve 13 and the control valve 7. As a result, the water supply valve 13 and the vacuum valve 4 are opened, the washing water is supplied to the pot 11, and the contents of the pot 11 are suctioned and discharged to the vacuum pipe 5. The opening of the vacuum valve 4 is detected by a valve opening sensor 21.
In this case, when the vacuum valve 4 is opened, the negative pressure of the vacuum pipe 5 decreases shortly thereafter. Based on the valve opening detection signal of the valve opening sensor 21 and the signal indicating that the degree of vacuum from the vacuum degree sensor has decreased, the controller 16 determines that the toilet 10 is not clogged.

When a predetermined time has elapsed since the opening of the water supply valve 13 and the vacuum valve 4, the controller 16 outputs a valve closing signal to the control valve 7 and the water supply valve 13. Then, first, the vacuum valve 4 is closed, and then the water supply valve 13 is closed. As a result, the pot 11 enters a use standby state in which the accumulated water is collected.

When the flush switch 17 is pressed when the vicinity of the drain port of the toilet 10 is clogged, the controller 16 similarly operates the water supply valve 1.
3 and the control valve 7 output a valve opening signal, and the water supply valve 13 and the vacuum valve 4 open respectively. The opening of the vacuum valve 4 is detected by the valve opening sensor 21, and a valve opening detection signal is input to the controller 16. In this case, since the toilet 10 is clogged, the degree of vacuum detected by the vacuum degree sensor 20 is still high even when the vacuum valve 4 is opened.
Although the signal indicating the high degree of vacuum is input from the vacuum degree sensor 20 despite the signal indicating the valve opening being input from the valve opening sensor 21, the controller 16 is When it is determined that the clogging has occurred, the water supply valve 13 is closed, and the alarm 22 is operated to generate an alarm indicating that clogging has occurred. Since the water supply valve 13 is quickly closed after the clogging is detected, the amount of water supplied to the bowl 11 is small, and the overflow of the water from the toilet 10 is prevented.

In this embodiment, after the blockage is detected as described above and the water supply valve 13 is closed, the controller 16 outputs a valve closing signal to the control valve 7 and once turns the vacuum valve 4 on. Close the valve. Next, the controller 16 outputs a valve opening signal to the control valve 7 again to open the vacuum valve 4, and then checks the degree of vacuum detected by the vacuum sensor 20 again. In this case, if the degree of vacuum detected by the vacuum sensor 20 decreases, it is determined that the clogging of the toilet 10 has been resolved, the alarm 22 is stopped, and thereafter the water supply valve 13 is opened as in normal times. After that, the vacuum valve 4 is closed, and after a while, the water supply valve 13 is closed to be in a state of waiting for the next use of the toilet. Despite the opening of the vacuum valve 4 again, the vacuum sensor 20
Is still high, it is determined that the clogging has not been resolved, and the operation of the alarm 22 is continued.

In the above embodiment, a vacuum toilet is shown, but a vacuum urinal, a Japanese-style toilet, a handwasher,
The present invention can also be applied to vacuum drainage equipment such as basins and various sinks.

[0027]

As described above, according to the present invention, it is possible to detect clogging of the vacuum drainage equipment and prevent overflow of water from sanitary appliances such as toilets.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a vacuum toilet facility according to an embodiment.

FIG. 2 is a sectional view showing a vacuum valve of the vacuum toilet.

FIG. 3 is a configuration diagram of a vacuum toilet equipment according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rubber tube 2 Working chamber 3 Spring 4 Vacuum valve 5 Vacuum piping 6 Negative pressure transmission pipe 7 Control valve 10 Toilet bowl 11 Bowl 12 Irrigation pipe 13 Water supply valve 17 Washing switch 20 Vacuum degree sensor 21 Open valve sensor 22 Alarm

Claims (5)

[Claims] 1. A vacuum drainage system in which a negative pressure source is connected to a drainage flow path of a sanitary appliance and a vacuum valve operated by a negative pressure is provided in the drainage flow path, and detects an operation state of the vacuum valve. A vacuum drainage facility comprising: an operating state detecting means; and a vacuum degree detecting means for detecting a degree of vacuum of the drainage flow path. 2. The apparatus according to claim 1, wherein an alarm is issued when the degree of vacuum detected by the degree-of-vacuum detecting means is higher than a predetermined value while the operating state detecting means detects opening of the vacuum valve. A vacuum drainage facility comprising a means for generating. 3. The vacuum level according to claim 1, further comprising a water supply means for supplying cleaning water to the sanitary ware, and wherein the operating state detecting means detects opening of the vacuum valve. A vacuum drainage device comprising means for stopping the water supply means when the degree of vacuum detected by the detection means is higher than a predetermined value. 4. The vacuum drainage system according to claim 3, further comprising: means for opening the vacuum valve again after stopping the water supply means. 5. The vacuum drainage device according to claim 4, further comprising: means for issuing an alarm when the degree of vacuum detected by the degree of vacuum detection means is higher than a predetermined value even after the valve is opened again. .