JPH11100884A - Vacuum drainage facilities - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly drain from a sanitary apparatus even in the case there is a shortage of negative pressure in a drain passage of vacuum drain facilities. SOLUTION: 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, and contents in the bowl 11 are discharged to a vacuum piping 5. In case there is a shortage of negative pressure in the vacuum piping 5 detected by a negative pressure sensor 25, a reserve feed valve 23 is opened along with the feed valve 13 at the time of pressing the washing switch 17. A large quantity of water is therefore fed to the bowl 11, and water head pressure is applied to make water flow away to the vacuum piping 5.

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 more particularly to a vacuum drainage system having a countermeasure when a negative pressure in a vacuum pipe is insufficient. About.

[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 closed.

FIG. 5 is a view showing the installation configuration of a vacuum toilet provided with the vacuum valve 4.

A water pipe 12 is provided around the upper edge rim of the bowl 11 of the toilet 10, and flush water can be supplied to the water 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 a 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 thus constructed, 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.

[0010]

As described above, a vacuum drainage system having a vacuum toilet or the like suctions and discharges sewage into a vacuum pipe by negative pressure as described above. The ability to suck and discharge sewage from sanitary fixtures is reduced. For example, when a plurality of vacuum toilets are connected to a vacuum pipe, and one of the vacuum toilets is operated to discharge sewage, air is sucked into the vacuum pipe together with sewage,
Insufficient negative pressure in the vacuum pipe may cause sewage to not flow smoothly to the collection tank. Particularly in the case of a vacuum toilet, the amount of pot washing water may be smaller than that of a conventional flush toilet, and if the negative pressure in the vacuum pipe is insufficient, filth easily accumulates near the drain port of the toilet or in the middle of the pipe.

[0011] In order to suppress a decrease in negative pressure in the vacuum pipe due to the operation of draining waste water of such a vacuum sanitary appliance, the diameter of the vacuum pipe is increased or the capacity of the negative pressure source (for example, the capacity of the vacuum tank) is reduced. Although it is being made larger, the equipment cost increases.

A first object of the present invention is to provide a vacuum drainage system capable of smoothly sucking and discharging sewage from a vacuum sanitary appliance without unnecessarily increasing the diameter of a vacuum pipe or the capacity of a negative pressure source. Aim. It is a second object of the present invention to provide a vacuum drainage facility in which sanitary appliances are not operated to discharge sewage when negative pressure in the vacuum pipe is insufficient.

Since the vacuum valve used in the vacuum drainage system uses the negative pressure in the vacuum pipe as the driving power source as shown in FIGS. 4 and 5, when the negative pressure in the vacuum pipe is insufficient. The operation of the vacuum valve may be defective. A third object of the present invention is to provide a vacuum drainage system in which a vacuum valve operates normally even when a negative pressure in a vacuum pipe is insufficient.

[0014]

According to a first aspect of the present invention, there is provided a vacuum drainage facility, wherein a negative pressure source is connected to a drainage flow path of the sanitary ware, and a vacuum valve operated by negative pressure is provided in the drainage flow path. In a vacuum drainage system provided with a water supply means for supplying cleaning water to the sanitary fitting in conjunction with opening of the vacuum valve, when the negative pressure in the drainage channel does not reach a predetermined negative pressure, the sanitary fitting is connected to the sanitary fitting. Means for increasing the amount of washing water supplied.

In such a vacuum drainage system, when a negative pressure in a vacuum pipe is low (close to the atmospheric pressure), a large amount of washing water is supplied to a vacuum sanitary appliance such as a vacuum toilet, so that a drain port of the sanitary appliance is provided. The head added to the water flowing out of the sanitary ware increases, and the sewage in the sanitary fitting is smoothly discharged. Further, even if solid matter such as paper is mixed in the sewage, the solid matter is flushed by a large amount of water and flows without stagnation from the sanitary ware to the collection tank.

The means for increasing the amount of supplied water is defined in claim 2
A method for prolonging the opening time of the water supply valve, such as
It is preferable to provide a spare water storage tank and supply water to the sanitary ware from this water storage tank.

In the present invention, the auxiliary negative pressure generating means which operates when the negative pressure of the drainage channel does not reach the predetermined negative pressure to enable the operation of the vacuum valve. Is provided, it is possible to reliably open the vacuum valve even when the negative pressure of the vacuum pipe is insufficient.

In the present invention, an alarm may be issued when the negative pressure in the drainage channel does not reach the predetermined negative pressure.

In such a vacuum drainage system, a user who knows that the negative pressure of the vacuum pipe is insufficient due to the alarm can be expected to refrain from using the sanitary ware. Also, even if a different operation than usual (for example, an operation of supplying a larger amount of washing water to the sanitary fitting) is performed when the sanitary fitting is drained, the user may be surprised or mistaken as a malfunction. Is prevented.

In the vacuum drainage system according to the present invention (claim 8), the sanitary fitting is covered when the negative pressure of the drainage channel does not reach a predetermined negative pressure so that the sanitary fitting is not used.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a system diagram of a vacuum toilet equipment according to an embodiment, in which a water storage tank 22 for supplying water to a pot 11 when a negative pressure of a vacuum pipe 5 is insufficient is provided. I have. Water is supplied to the water storage tank 22 via a pipe 20 and a ball tap 21 branched from an upstream side of the water supply valve 13 of the water supply pipe 14. A reserve water supply pipe 24 is connected to the bottom of the water storage tank 22 via a reserve water supply valve 23, and the end of the reserve water supply pipe 24 faces the upper edge of the pot 11. When the preliminary water supply valve 23 is closed, water is stored in the water storage tank 22 up to the upper limit water level at which the ball tap 21 closes.

A negative pressure sensor 25 is provided closer to the vacuum pipe 5 than the check valve 15 in the negative pressure transmission pipe 6 connecting the vacuum pipe 5 and the control valve 7 for controlling the operation of the vacuum valve. The detection signal of the negative pressure sensor 25 is input to the controller 16. The controller 16 outputs a control signal to the auxiliary water supply valve 23 in addition to the control valve 7 and the water supply valve 13. Further, the controller 16 turns on a negative pressure insufficient indicator lamp 26 provided on the wall surface of the toilet room.

The other components in FIG. 1 are the same as those in FIG. 5, and the same reference numerals denote the same parts.

In the vacuum toilet apparatus thus constructed, when the cleaning switch 17 is pressed at normal time when the negative pressure in the vacuum pipe 5 detected by the negative pressure sensor 25 is sufficiently high, the water supply valve 13 and the vacuum valve 4 are turned on. The valve is opened, the washing water is supplied to the pot 11, and the contents of the pot 11 are sucked and discharged to the vacuum pipe 5.

When a predetermined time elapses after the water supply valve 13 and the vacuum valve 4 are opened, 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.

If the cleaning switch 17 is operated when the negative pressure detected by the negative pressure sensor 25 does not reach the predetermined negative pressure and the negative pressure is insufficient (there is a negative pressure enough to open the vacuum valve 4), the vacuum The valve 4 is opened, the water supply valve 13 and the preliminary water supply valve 23 are opened, and both the water supply from the water supply pipe 14 and the water stored in the water storage tank 22 are supplied to the bowl 11. As described above, since a large amount of water is supplied to the bowl 11, even if the negative pressure in the vacuum pipe 5 tends to be insufficient, the sewage is sucked into the vacuum pipe 5 by being pushed into the vacuum pipe 5 by the water head in the bowl 11. It is. Even if the sewage contains solids such as papers, the sewage is smoothly discharged into the vacuum pipe 5 together with a large amount of water. Since the amount of sewage flowing into the vacuum pipe 5 is large, in some cases, the sewage flows as a lump in the form of a piston flow in the vacuum pipe 5 and is sucked by a negative pressure from a negative pressure source to flow through the vacuum pipe 5. Flows smoothly. When a predetermined time has passed since the water supply valve 13 and the preliminary water supply valve 23 were opened, first,
The vacuum valve 4 is closed, and then the water supply valve 13 and the preliminary water supply valve 2
3 closes. As a result, the pot 11 enters a use standby state in which the accumulated water is collected. Further, water is stored again in the water storage tank 22.

When the negative pressure detected by the negative pressure sensor 25 is lower than a predetermined negative pressure, the negative pressure indicating lamp 26 is turned on (or blinks).
Then, it is displayed that the negative pressure in the vacuum pipe 5 is insufficient.
Therefore, the urgent use of the urinal 10 can be avoided.

FIG. 2 is a system diagram of a vacuum toilet equipment according to another embodiment. In this embodiment, a negative pressure sensor 25 is provided closer to the vacuum pipe 5 than the check valve 15 of the negative pressure transmission pipe 6 in the vacuum toilet equipment shown in FIG. Have been. In addition, a vacuum pump 28 and a buffer tank 29 for storing negative pressure are provided to reduce the pressure in the pipeline between the check valve 15 and the control valve 7 of the negative pressure transmission pipe 6. This vacuum pump 28 is controlled by the controller 16. In this embodiment, a negative pressure insufficient indicator light 26 is also provided.

The water supply valve 13 is controlled by the controller 16. When the negative pressure detected by the negative pressure sensor 25 is higher than the specified negative pressure, the valve opening time of the water supply valve 13 is set to be short and steady. However, when the negative pressure detected by the negative pressure sensor 25 does not reach the specified negative pressure, the opening time of the water supply valve 13 is set to be longer than in the steady state, and a large amount of washing water is supplied to the pot 11.

The other components in FIG. 2 are the same as those in FIG. 5, and the same parts are denoted by the same reference numerals.

When the washing switch 17 is pressed during normal operation of the vacuum toilet equipment configured as described above when the negative pressure detected by the negative pressure sensor 25 is sufficient, the water supply valve 13 and the vacuum valve 4 are opened, and While the washing water is supplied, the contents of the pot 11 are sucked and discharged into the vacuum pipe 5.

When a predetermined time elapses after the water supply valve 13 and the vacuum valve 4 are opened, 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 negative pressure detected by the negative pressure sensor 25 is insufficient to the specified negative pressure, the negative pressure insufficient indicator light is turned on (or blinks), and the fact is displayed. When the negative pressure is insufficient to reach the operating negative pressure of the vacuum valve 4 in the negative pressure insufficient state, the vacuum pump 28 is operated to recover the negative pressure in the negative pressure transmission pipe 6, and the control valve 7 is operated. Is opened, the vacuum valve 4 can be reliably opened even if the negative pressure in the vacuum pipe 5 is insufficient.

When the washing switch 17 is pressed in a state where the negative pressure detected by the negative pressure sensor 25 is insufficient, the water supply valve 1
The valve 3 is opened for a longer time than in the steady state, and more water is supplied into the bowl 11 than in the steady state. When a large amount of water is supplied into the pot 11 and the amount of water stored in the pot 11 increases, the vacuum valve 4 opens. Thereby, the sewage in the pot 11 is sucked and discharged into the vacuum pipe 5. In this case, the amount of water in the pot 11 is large,
Since the head added to the discharged water is large, the water is smoothly sucked into the vacuum pipe 5 even if the negative pressure in the vacuum pipe 5 is insufficient. A large amount of water sucked into the vacuum pipe 5 flows smoothly in the vacuum pipe 5 and solids are discharged without stagnation.

When a predetermined time has passed since the opening of 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.

FIG. 3 is a system diagram of a vacuum toilet equipment according to still another embodiment of the present invention.

Also in this embodiment, the negative pressure transmission pipe 6
A negative pressure sensor 25 is provided closer to the vacuum pipe 5 than the check valve 15, and a detection signal thereof is input to the controller 16.

A toilet seat box 32 is installed on the rear upper surface of the toilet 10, and the toilet seat 30 and the toilet lid 31 are attached to the toilet seat box 32.
Is rotatably supported. A valve lid driving device 33 for rotating the toilet lid 31 is installed in the toilet seat box 32. On the upper surface of the toilet seat box 32, there is provided a display panel 34 for indicating that the negative pressure in the vacuum pipe 5 is insufficient and the use of the toilet should be avoided.

The other structure of FIG. 3 is the same as that of FIG. 5, and when the negative pressure in the vacuum pipe 5 is sufficient, the switch 1
7 is operated in the same manner.

In the vacuum toilet apparatus shown in FIG. 3, when the negative pressure in the vacuum pipe 5 detected by the negative pressure sensor 25 is insufficient, and when the toilet lid 31 is open, the toilet lid driving device 3
3 is operated and the toilet lid 31 falls down on the toilet 10. (It is kept closed when the toilet lid 31 is closed.) Then, a display is displayed on the display panel 34 so as to minimize the use of the toilet 10 because the negative pressure in the vacuum pipe 5 is insufficient.

When the negative pressure of the vacuum pipe 5 is restored, the display disappears, and the toilet lid 31 is raised by the driving device 33 as necessary.

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.

In the above embodiment, a display lamp or a display panel is used as the display means, but an audio display means may be employed.

[0044]

As described above, according to the present invention, sewage can be smoothly discharged from sanitary fittings even when the negative pressure in the drainage flow path of the vacuum drainage facility is insufficient. Therefore, when a plurality of vacuum sanitary fittings are connected to one system of vacuum drainage channels, even when a plurality of sanitary fittings are used in parallel, sewage can be smoothly discharged from each sanitary fitting. In addition,
ADVANTAGE OF THE INVENTION According to this invention, when negative pressure of a drainage flow path is inadequate, it can also be comprised so that use of sanitary fittings may be suppressed.

[Brief description of the drawings]

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

FIG. 2 is a configuration diagram of vacuum toilet equipment according to another embodiment.

FIG. 3 is a configuration diagram of a vacuum toilet equipment according to still another embodiment.

FIG. 4 is a sectional view showing a vacuum valve of the vacuum toilet.

FIG. 5 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 16 Controller 17 Washing switch 21 Ball tap 22 Water tank 23 Reserve water supply valve 24 Reserve water supply Tube 25 Negative pressure sensor 26 Negative pressure insufficient indicator light 28 Vacuum pump 29 Buffer tank 30 Toilet seat 31 Toilet lid 32 Toilet seat box 33 Toilet lid drive unit 34 Display panel

Claims (8)

[Claims] 1. A negative pressure source is connected to a drain passage of a sanitary appliance, and a vacuum valve operated by negative pressure is provided in the drain passage, and the sanitary appliance is operated in conjunction with opening of the vacuum valve. A vacuum drainage system provided with a water supply means for supplying cleaning water to the sanitary ware when the negative pressure of the drainage channel does not reach a predetermined negative pressure. Vacuum drainage equipment characterized by that. 2. The water supply pipe according to claim 1, wherein a water supply pipe having a water supply valve is connected to the sanitary ware, and the means for increasing the water supply amount of the washing water is means for increasing a valve opening time of the water supply valve. A vacuum drainage facility characterized by the following. 3. A pre-water supply means according to claim 1, wherein a water supply pipe having a water supply valve is connected to said sanitary fitting, and said sanitary fitting has a water storage tank as a means for increasing a water supply amount of said washing water. A vacuum drainage facility characterized by the provision of: 4. A spare negative pressure generating means according to claim 1, which operates when said negative pressure of said drain passage does not reach a predetermined negative pressure to enable said vacuum valve to operate. A vacuum drainage facility characterized by the provision of: 5. A negative pressure source is connected to a drain passage of the sanitary appliance, and a vacuum valve operated by negative pressure is provided in the drain passage, and the sanitary appliance is operated in conjunction with opening of the vacuum valve. A vacuum drainage device provided with water supply means for supplying washing water to the vacuum drainage device, wherein when the negative pressure of the drainage channel does not reach a predetermined negative pressure, the auxiliary vacuum pressure generating means operates to operate the vacuum valve. A vacuum drainage facility comprising: 6. The method according to claim 1, further comprising the step of: detecting a negative pressure in the drainage flow path, and providing an alarm generating means that operates when the detected negative pressure does not reach a predetermined negative pressure. Characteristic vacuum drainage equipment. 7. A negative pressure source is connected to a drain passage of the sanitary appliance, and a vacuum valve operated by a negative pressure is provided in the drain passage, and the sanitary appliance is operated in conjunction with the opening of the vacuum valve. 1. A vacuum drainage system comprising: a water supply unit for supplying washing water to a vacuum drainage unit, wherein an alarm generation unit that operates when a negative pressure of the drainage channel does not reach a predetermined negative pressure is provided. 8. A sanitary fitting, wherein a negative pressure source is connected to a drain passage of the sanitary appliance, and a vacuum valve operated by a negative pressure is provided in the drain passage, and the sanitary appliance is operated in conjunction with opening of the vacuum valve. A vacuum drainage device provided with a water supply means for supplying washing water to the sanitary fitting when the negative pressure of the drainage channel does not reach a predetermined negative pressure. Drainage equipment.