JP2001355268A - Vacuum toilet stool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum toilet stool capable of easily detecting the abnormal opening of a drain valve for each vacuum toilet stool to easily take a measure against the abnormal opening and also easily maintaining the degree of vacuum through an entire vacuum pipe. SOLUTION: This vacuum toilet stool comprises a toilet stool 11, a water supply pipe 21, a vacuum pipe 17 connected to a drain hole 13 through a vacuum valve (drain valve) 15, and a controller 30 for controlling the water supply from the water supply pipe 21 and the opening and closing of the vacuum valve 15. The waste accumulated in the toilet stool 11 and washing water are drained into the vacuum pipe 17 by supplying washing water from the water supply pipe 21 and opening the vacuum valve 15. A noise detection sensor 47 is installed for detecting the flowing noise of the fluid drained to the vacuum valve 15. A stop valve 49 is installed in the vacuum pipe 17. When the noise detection sensor 47 detects the abnormal opening of the vacuum valve 15, the controller 30 performs again the opening or closing operation of the vacuum valve 15. If the abnormal opening is not yet eliminated, the stop valve 49 is closed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum toilet which sucks and discharges excrement from a toilet into a vacuum pipe.

[0002]

2. Description of the Related Art FIG. 5 is an overall schematic view of a vacuum waste disposal system using a vacuum toilet. As shown in FIG. 1, the vacuum waste disposal system includes a toilet (ball) 1 of a vacuum toilet 10.
A vacuum line 17 is connected to a drain port 13 attached to the bottom of the toilet 1 via a vacuum valve 15, while a water supply pipe 2 is
1 was connected, washing water was supplied into the toilet 11 from the water supply pipe 21 for a predetermined time, and the vacuum valve 15 was opened to suck the dirt in the toilet 11 together with the washing water into the vacuum pipe 14 and to the vacuum pipe 17. It is configured such that the waste and the washing water are simultaneously conveyed by the sucked air and collected in the water collecting tank 110. A plurality of vacuum toilets 10 are connected to a vacuum line 17.

The inside of the water collecting tank 110 is evacuated to a vacuum of, for example, -70 kPa to -60 kPa by a vacuum pump VP. On the other hand, when a certain amount of dirt and washing water in the water collecting tank 110 accumulates, they are pumped to the sewage or treatment facility by the pump P.

If the vacuum valve 15 of any one of the plurality of vacuum toilets 10 is left open due to, for example, biting of foreign matter or failure, the vacuum of the entire system of the vacuum line 17 is reduced. There is a possibility that the degree of deterioration will decrease and eventually the function of the entire system will stop.

For this reason, conventionally, a pressure sensor 101 is mounted at a predetermined position of the vacuum line 17, and the pressure sensor 10 detects that the degree of vacuum of the vacuum line 17 has decreased (pressure rise).
When 1 is detected, for example, an alarm is issued, and the failed vacuum valve 15 is searched for and repaired.

However, when an abnormality of the vacuum valve 15 is detected by the above-described method, it is necessary to investigate which vacuum valve 15 has become abnormally open. When the abnormality is detected, the vacuum degree of the entire system of the vacuum line 17 has already been detected. The normal operation of the vacuum toilet 10 is impaired,
I couldn't respond quickly.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has as its object to detect the abnormal opening of the drain valve easily for each vacuum toilet, and to easily and abnormally open the drain valve. It is an object of the present invention to provide a vacuum toilet which can quickly cope with the situation and can easily maintain the degree of vacuum of the entire vacuum line.

[0008]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a toilet, a water supply pipe for supplying flush water to the toilet, and a vacuum pipe connected to a drain port of the toilet via a drain valve. A control device for controlling the supply of water from the water supply pipe and the opening and closing of the drain valve, while supplying cleaning water from the water supply pipe into the toilet, and the dirt accumulated in the toilet by opening the drain valve. In a vacuum toilet having a structure for discharging washing water to a vacuum pipe, a drain valve abnormal opening detection sensor for detecting abnormal opening of a drain valve and outputting the detected drain valve to the control device is provided at a predetermined position of the vacuum toilet, and the control device Means for re-opening or closing the drain valve when it is determined that the drain valve is abnormally opened based on a signal from the drain valve abnormal opening detection sensor, or for issuing an alarm or closing the on-off valve attached to the vacuum pipe To It was configured to.

Here, the drain valve abnormal opening detection sensor is
It is preferable that the sensor is a sensor that detects an event that occurs outside the drain valve when the drain valve is opened.

[0010] Further, the drain valve abnormal opening detection sensor may include:
Either a pressure sensor that detects the degree of vacuum in the vacuum line, or a water level sensor that detects a drop in the water level in the toilet, or is attached to a predetermined position in the portion from the drain port of the toilet to the vacuum line to be drained. A sound detection sensor that detects the sound of flowing fluid, or a running water detection sensor that is attached to a predetermined position of a portion from the drain port of the toilet to the vacuum pipe and detects the flow of drained fluid, or It is preferable that the sensor is a check valve operation detection sensor that detects that a check valve attached to a predetermined position in a portion from the drain port of the toilet to the vacuum conduit is operating.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a schematic configuration diagram showing a vacuum toilet 10 according to one embodiment of the present invention. As shown in the figure, a vacuum toilet 10 includes a toilet (ball) 11 and a toilet 1
1, a water supply pipe 21 for supplying flush water, a vacuum pipe line 17 connected to a drain port 13 of the toilet 11 via a vacuum valve (drain valve) 15, and a water supply valve 2 attached to the water supply pipe 21.
3, a valve opening / closing switching valve 25 that opens and closes the vacuum valve 15 by switching and supplying vacuum and outside air to the vacuum valve 15, and instructs the water supply valve 23 and the valve opening / closing switching valve 25 to perform their operations at desired timing. And a control device 30 that performs the control.

A water supply pipe 21 is connected to the toilet bowl 11 so as to supply flush water into the toilet bowl 11, and a water supply valve 23 made of a two-port solenoid valve and a vacuum breaker 27 are connected on the way. Have been. The vacuum breaker 27 has a function of preventing the water in the water supply pipe 21 from flowing backward when the pressure on the water pipe side to which the water supply pipe 21 is connected is reduced and sucking air instead.

On the other hand, a vacuum outlet pipe 33 connected to a vacuum outlet 31 provided on the downstream side of the vacuum valve 15 includes a check valve 35 and a check valve 35.
The auxiliary vacuum chamber 37 is connected to the valve opening / closing switching valve 25 made of a three-port solenoid valve, and the tip thereof is connected to the vacuum supply unit 41 of the vacuum valve 15.

Here, the auxiliary vacuum chamber 37 is for securing a vacuum used for opening and closing the vacuum valve 15, and the degree of vacuum on the vacuum pipe 17 side is lower than the degree of vacuum in the auxiliary vacuum chamber 37 (see FIG. That is, the check valve 35 is attached so that the degree of vacuum in the auxiliary vacuum tank 37 does not decrease even if the pressure increases. One of the ports of the valve opening / closing switching valve 25 is outside air (atmosphere)
And supplies the vacuum supply section 41 to the auxiliary vacuum tank 37 by switching the vacuum or the outside air.

The vacuum valve 15 is opened by moving the internal valve element by the vacuum supplied to the vacuum supply section 41 and returning the internal valve element to the original position by the air supplied to the vacuum supply section 41. And Usually, it is closed by the atmosphere, and the vacuum line 17 is closed.

The control device 30 outputs an opening / closing command to the water supply valve 23 and the valve opening / closing switching valve 25, and inputs a washing start command signal from a washing switch 45 mounted in the toilet.

In the vacuum toilet 10 according to this embodiment, a sound detection sensor (drain valve abnormal open detection sensor) 47 is attached to the outer surface of the vacuum valve 15 and a portion of the vacuum line 17 (from another vacuum valve 15). The opening / closing valve 49 is attached to a portion (upstream of the connection of the vacuum line 17).

The sound detection sensor 47 is a sensor for detecting the sound of air or water flowing in the vacuum valve 15 (sending sound), and its output is input to the control device 30. The on-off valve 49 is made of a motor-operated valve, and opens and closes the vacuum pipe line 17 according to a command from the control device 30. The on-off valve 49 is normally open.

Then, as shown in FIG. 1, when the person first closes the lid 19 of the toilet bowl 11 and turns on the washing switch 45, the control device 30 to which the signal is input is turned on by the water supply valve 23.
Output an open signal to Thereby, supply of the flush water into the toilet 11 is started. Next, an open signal is output from the control device 30 to the valve opening / closing switching valve 25, and the vacuum in the auxiliary vacuum chamber 37 is supplied to the vacuum supply unit 41 of the vacuum valve 15 to open the vacuum valve 15. The cleaning water and the dirt are sucked and discharged together with the air into the vacuum line 17. After a predetermined time,
A closing signal is output from the control device 30 to the valve opening / closing switching valve 25, and the vacuum valve 15 is closed.
Reference numeral 3 is open, and after a predetermined amount of washing water has accumulated in the toilet 11, it is closed. This completes one cleaning operation.

When the vacuum valve 15 is operating normally, an opening signal is output from the control device 30 to the valve opening / closing switching valve 25 and the vacuum valve 15 is opened. Wash water, dirt, and air flow through the vacuum valve 15 until the closing signal is output and the vacuum valve 15 is closed. Therefore, the sound detection sensor 47 only operates until the vacuum valve 15 is opened and closed. The control unit 30 detects that a fluid is flowing in the controller 15 and outputs it to the controller 30.

Conversely, if the sound detection sensor 47 detects the sound of the fluid (air or water) flowing in the vacuum valve 15 when the vacuum valve 15 is closed by a command from the control device 30, control is performed. The device 30 determines that this is an abnormal opening of the vacuum valve 15. If it is determined that the valve is abnormally opened, the control device 30 outputs a signal to open or close the vacuum valve 15 to the valve opening / closing switching valve 25 to drive the valve, thereby removing foreign matter or the like clogged in the vacuum valve 15. Try to remove it from. If the sound detection sensor 47 still detects the flow sound, it outputs a close command to the on-off valve 49 on the downstream side to close it.
As a result, only the vacuum toilet 10 is disconnected from the vacuum waste disposal system, so that the other vacuum toilets can be used without any trouble.

At this time, it is preferable that the control device 30 simultaneously inform the control panel of the vacuum sewage treatment system of the occurrence of an abnormality in the vacuum valve 15 and immediately repair the same (the same applies to the following embodiments).

As described above, the sound detection sensor 47 is connected to the vacuum valve 15.
Since it is configured to detect an abnormality of the vacuum valve 15 by being attached to the outside, a complicated and costly method of changing the design of the vacuum valve 15 itself and incorporating an abnormal opening detection mechanism therein is unnecessary, and In addition, abnormal opening can be reliably detected.

The position where the sound detection sensor 47 is attached is a pipe portion connecting the vacuum valve 15 and the drain port 13 or the vacuum pipe line 1.
7 may be used.

Instead of the sound detection sensor 47, a running water detection sensor (abnormal drainage valve detection sensor) for detecting the presence or absence of the flow of the drained fluid is provided at the drain port 13 of the toilet bowl 11.
May be attached to a predetermined position extending from to the vacuum line 17.
The control method is the same as in the case of the sound detection sensor 47.

FIG. 2 is a schematic configuration diagram showing a vacuum toilet 10 according to another embodiment of the present invention. Vacuum toilet 1 shown in FIG.
0 is different from the above-described embodiment in that, instead of attaching the sound detection sensor 47, the vacuum tube 17 is placed at a predetermined position of the vacuum line 17 (a portion upstream of the vacuum line 17 from another vacuum valve 15). The point is that a pressure sensor (drain valve abnormal opening detection sensor) 50 for detecting the degree of vacuum in the passage 17 is attached.

The degree of vacuum in the vacuum line 17 decreases (pressure rises) when the vacuum valve 15 is opened to drain water.
Close 5 to recover. However, if the vacuum valve 15 is abnormally opened, the degree of vacuum does not recover even if a predetermined time has elapsed after the control device 30 outputs a signal to close the vacuum valve 15 to the valve opening / closing switching valve 25. Therefore, the control device 30 outputs a close command to the valve opening / closing switching valve 25 and determines that the vacuum valve 15 is abnormally opened when the degree of vacuum in the vacuum pipe line 17 does not recover to a predetermined value or more even after a predetermined time has elapsed, An attempt is made to make the vacuum valve 15 perform the opening or closing operation again to remove foreign matter from the valve,
If the degree of vacuum still does not recover, a close command is output to the on-off valve 49 on the downstream side to close it, and only the vacuum toilet 10 is disconnected from the vacuum waste treatment system.

FIG. 3 is a schematic configuration diagram showing a vacuum toilet 10 according to another embodiment of the present invention. Vacuum toilet 1 shown in FIG.
0 is different from the above embodiments in that a water level sensor (drain valve abnormal open detection sensor) that detects the level of accumulated water in the toilet 11 instead of attaching the sound detection sensor 47 and the like.
55 is attached.

The accumulated water in the toilet 11 is maintained at a constant water level when the vacuum valve 15 is closed and the water supply valve 23 is closed after draining dirt and washing water in the toilet 11. However, if the vacuum valve 15 is abnormally open, the level of the pool water gradually decreases and eventually disappears. Therefore, when the control device 30 outputs a closing signal to the water supply valve 23 and detects that the water level of the accumulated water has fallen below the predetermined water level by the water level sensor 55, the control device 30 determines that the vacuum valve 15 is abnormally opened and re-evacuates. An attempt is made to open or close the valve 15 to remove foreign matter from the valve. If the water level still drops, a close command is output to the on-off valve 49 on the downstream side to close the valve, and the vacuum toilet is closed. Disconnect only 10 from the vacuum waste treatment system.

FIG. 4 is a schematic configuration diagram showing a vacuum toilet 10 according to another embodiment of the present invention. Vacuum toilet 1 shown in FIG.
0 is different from the above embodiments in that a check valve 60 is attached in the middle of the vacuum pipe line 17 instead of attaching the sound detection sensor 47 and the like, and the check valve 60 is operated on the check valve 60. A check valve operation detection sensor (drain valve abnormal opening detection sensor) 65 for detecting whether or not
The point is that an alarm 70 that operates according to an alarm command from the control device 30 is attached near the vacuum toilet 10.

When the vacuum valve 15 is operating normally,
Since cleaning water, dirt, and air flow through the vacuum valve 15 from when the vacuum valve 15 is opened to when the vacuum valve 15 is closed, the check valve operation detection sensor 65 determines that the check valve 6
0 is detected and output to the control device 30. On the contrary, if the vacuum valve 15 is closed by a command from the control device 30 to the valve switching valve 25, the check valve 60
When the controller 30 detects that the vacuum valve 15 is operating, the controller 30 determines that the vacuum valve 15 is abnormally opened, and
Attempt to remove foreign matter from the valve by performing an opening or closing operation. If the check valve 60 is still operating, a close command is output to the on-off valve 49 to close it, and the vacuum toilet 10 is closed.
Only disconnect from the vacuum waste treatment system. At the same time, the control device 30 outputs an alarm command to the alarm device 70, issues an alarm, and notifies that the vacuum toilet 10 is out of order.
It goes without saying that the alarm 70 may be attached to each of the above embodiments.

The position where the check valve 60 and the check valve operation detection sensor 65 are attached may be a pipe portion connecting the vacuum valve 15 and the drain port 13.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims and the technical idea described in the specification and the drawings. Is possible. It should be noted that any shape or material not directly described in the specification and the drawings is within the scope of the technical idea of the present invention as long as the effects and effects of the present invention are exhibited.

For example, in the above-described embodiment, when the abnormal opening of the vacuum valve 15 is detected, the opening or closing operation of the vacuum valve 15 is performed again. Although these operations are performed, these operations may be performed separately and independently. That is, for example, the vacuum valve 15
When the abnormal opening of the vacuum valve 15 is detected, the opening or closing operation of the vacuum valve 15 is simply performed again (in this case, the opening / closing valve 49 is unnecessary), or the opening / closing valve 49 is immediately performed without performing the opening / closing operation.
May be closed, or only a notification or an alarm may be performed, or these operations may be combined.

Various sensors other than those described above may be used as the drain valve abnormal opening detection sensor. In short, any sensor that detects an event that occurs outside the vacuum valve 15 when the vacuum valve 15 is opened may be used. In the above embodiment, a vacuum valve that opens and closes using a vacuum pressure is used as the drain valve, but an electric valve that opens and closes the valve itself with an electric power such as a motor may be used instead.

[0036]

According to the present invention, as described in detail above, the following excellent effects are obtained. Abnormal opening of drain valves can be easily and individually detected for each drain valve of each vacuum toilet, so that abnormal opening of each drain valve can be dealt with easily and quickly individually, and the degree of vacuum in the entire vacuum line Can be easily maintained, and the function stoppage of the entire vacuum waste disposal system can be effectively prevented.

As a sensor for detecting an abnormal opening of the drain valve, a sensor for detecting an event occurring outside the drain valve when the drain valve is opened is used. This eliminates the need for a complicated and costly method such as incorporating a method. In particular, when a sound detection sensor, a running water detection sensor, a pressure sensor, a water level sensor, or a check valve operation detection sensor is used as the drain valve abnormal opening detection sensor, abnormal opening can be reliably detected.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing a vacuum toilet 10 according to one embodiment of the present invention.

FIG. 2 is a schematic configuration diagram showing a vacuum toilet 10 according to another embodiment of the present invention.

FIG. 3 is a schematic configuration diagram showing a vacuum toilet 10 according to another embodiment of the present invention.

FIG. 4 is a schematic configuration diagram showing a vacuum toilet 10 according to another embodiment of the present invention.

FIG. 5 is an overall schematic diagram of a vacuum waste disposal system using a vacuum toilet.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Vacuum toilet 11 Toilet bowl (ball) 13 Drain port 15 Vacuum valve (Drain valve) 17 Vacuum line 21 Water supply pipe 23 Water supply valve 25 Valve open / close switching valve 27 Vacuum breaker 30 Control device 33 Vacuum extraction pipe 35 Check valve 37 Auxiliary vacuum Tank 45 Washing switch 47 Sound detection sensor (Drain valve abnormal opening detection sensor) 49 Open / close valve 50 Pressure sensor (Drain valve abnormal opening detection sensor) 55 Water level sensor (Drain valve abnormal opening detection sensor) 60 Check valve 65 Check valve operation Detection sensor (Drain valve abnormal opening detection sensor) 70 Alarm

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Ogaki Winter 11-1 Haneda Asahimachi, Ota-ku, Tokyo F-term in Ebara Corporation (reference) 2D039 AC14 CB01

Claims (3)

[Claims] 1. A toilet, a water supply pipe for supplying flush water to the toilet, a vacuum pipe connected to a drain port of the toilet via a drain valve, and control of water supply from the water supply pipe and opening and closing of the drain valve. A vacuum toilet having a control device for supplying washing water from a water supply pipe into the toilet, and discharging dirt and washing water accumulated in the toilet to a vacuum pipe by opening a drain valve, A drain valve abnormal opening detection sensor that detects abnormal opening of the drain valve and outputs it to the control device is installed at a predetermined position of the vacuum toilet, and the control device detects the abnormal opening of the drain valve by a signal from the drain valve abnormal opening detecting sensor. A vacuum toilet having a means for re-opening or closing a drain valve when it is determined to be abnormally open, for issuing an alarm, or for closing an on-off valve attached to a vacuum line. 2. The vacuum toilet according to claim 1, wherein the drain valve abnormal opening detection sensor is a sensor that detects an event that occurs outside the drain valve when the drain valve is opened. 3. The drain valve abnormal open detection sensor is a pressure sensor that detects the degree of vacuum in a vacuum pipe, a water level sensor that detects a decrease in the water level in a toilet, or a vacuum pipe from a drain port of the toilet. It is a sound detection sensor that is attached to a predetermined position of the part leading to the passage and detects the flow sound of the drained fluid, or is attached to a predetermined position of the part leading to the vacuum pipe from the drain port of the toilet and is drained. It is a running water detection sensor that detects the flow of fluid, or a check valve operation detection sensor that detects that a check valve attached to a predetermined position in a portion from a drain port of a toilet to a vacuum pipe is operating. The vacuum toilet according to claim 2, wherein: