JP5156198B2 - Sewage treatment equipment for vehicles - Google Patents

Description

The present invention relates to trains, trains, particularly Shinkansen (registered trademark) vehicles, long-distance trains, sewage treatment devices for vehicles that are installed in trains and treat sewage such as urine, and more specifically, sewage such as urine is sewed The present invention relates to a vehicle sewage treatment apparatus that drops sewage from a receiver to a waste tank by gravity.

Shinkansen (registered trademark) vehicles, long-distance trains, and sewage sewage treatment equipment for urinals installed in trains have traditionally been used as a method for flowing sewage from a urinal to a filth tank via a sewage pipe. In order to prevent backflow due to the pressure difference between the inside and outside of the vehicle, one valve element is placed in the middle of the sewage pipe. It is known that (Prior art 1)

  Furthermore, the improved sewage treatment apparatus for vehicles for urine is based on the vacuum pressure feeding system, and the sewage made into the urinal once enters the intermediate tank via the sewage pipe and further applies internal pressure to the intermediate tank. There was also known a method in which the wastewater pipes flowed into the waste tank. And such a vacuum pumping system has a structure in which sewage is pumped from the urinal to the filth tank by providing valve bodies in the upstream and downstream sewage pipes of the intermediate tank and pressurizing and depressurizing the intermediate tank . (Prior art 2)

That is, the in-car sewage treatment apparatus for urine of Prior Art 2 opens the upstream valve body and closes the downstream valve body by decompressing the intermediate tank when the urinal is used as the first stage, Aspirate sewage into the intermediate tank. When sewage enters the intermediate tank, the upstream valve body was closed as the second stage, and then the inside of the intermediate tank was pressurized. Next, the downstream valve body was opened and the sewage was pumped from the intermediate tank to the filth tank. . Japanese Laid-Open Patent Publication No. Hei 6-199234 (Prior Art 3) discloses a vehicle ventilator that eliminates passenger discomfort (such as discomfort to the ear ) of Shinkansen (registered trademark) vehicles that run at high speed. ing.

Vehicular sewage treatment apparatus for urine to be installed in the long-distance train or a train, in particular Shinkansen (TM) vehicle sewage treatment apparatus for urine to be installed in a vehicle, urinal passengers used in vehicle A filth tank that is installed and collects sewage such as urine is provided at the bottom of the vehicle.

And, in a vehicle used by passengers, especially in a Shinkansen (registered trademark) vehicle that runs at high speed, a vehicle ventilator as disclosed in Prior Art 3 is used to eliminate discomfort felt by passengers' ears and the like. The in-car pressure is maintained within a certain range. However, this pressure adjustment is not performed at the bottom of the vehicle where the filth tank is installed. Therefore, when the high-speed trains pass each other, when the vehicle enters the tunnel or enters the tunnel, the high pressure is also applied to the filth tank, and the pressure in the filth tank also increases. For example, when the Shinkansen (registered trademark) during high-speed running is a light section (normal ground) and the high-speed trains pass each other, the pressure applied to the filth tank increases to 400 mmAq in addition to the normal atmospheric pressure. In addition, when entering the tunnel or traveling in the tunnel, there is a possibility that the pressure applied to the waste tank increases to 1200 mmAq in addition to atmospheric pressure.

  Due to this pressure, if there is only one valve body as in the prior art 1, when a high pressure is applied to the waste tank due to traveling in the tunnel, the waste water in the waste water pipe is installed in the low pressure vehicle. In other words, there was a problem that the urinal may flow back to the urinal. In particular, when high pressure is applied to the filth tank when the valve body is opened in order to flow the sewage, the sewage tends to flow backward.

  Moreover, in the prior art 2, since an intermediate tank and various accessory parts for performing the pressurization and decompression are necessary, a problem that the place and cost for installing them are increased, and sewage is forcibly sucked in. There is a problem that air is sucked together with sewage, and noise due to air friction at that time is frequently generated.

  The sewage treatment apparatus for vehicles according to this invention is
A sewage treatment apparatus for a vehicle that sends sewage from a sewage receiver for urine provided in a vehicle to a waste tank provided outside the vehicle,
  A sewage pipe that guides the sewage moving by gravity from the sewage receiver to the waste tank;
  An upstream on-off valve provided upstream of the sewage pipe;
  A downstream on-off valve provided on the downstream side of the sewage pipe,
  An air vent valve provided between the upstream side open / close valve and the downstream side open / close valve, for discharging air containing odor generated in a state where sewage is accumulated by the downstream side open / close valve;
Have
  The upstream side open / close valve and the downstream side open / close valve do not open simultaneously,
  An air vent valve is installed in the interior of the vehicle, and a deodorizing device is provided in the vicinity of the air vent valve or in the piping to the air vent valve. Odor-containing air is deodorized by the deodorizing device and is discharged into the vehicle through the air vent valve. It is characterized by that.

According to the present invention, at least two valves are provided between a sewage receiver installed in a vehicle whose pressure is substantially adjusted to normal pressure and a filth tank outside the vehicle, and an air vent valve is provided between them. together, since the one of two valves is always closed, even under pressure from outside the sewage pipe, by evacuating air from the air disconnect can valve, via a sewage pipe from dirt tank sewage it is possible to prevent the pressure transmitted to the receiver. In particular, in the case of a vehicle sewage treatment device provided in a vehicle in which the upstream side opening / closing valve is installed in the vehicle interior and the downstream side opening / closing valve is installed in the vehicle exterior portion, the pressure from the outside of the vehicle reaches the sewage receiver in the vehicle There is nothing.

  Further, by providing a deodorizing device in the vicinity of the air vent valve or in a pipe having the air vent valve, unpleasant odor is prevented by deodorizing the air exhausted into the vehicle.

  1 and 2 show an embodiment of the present invention. FIG. 1 is a schematic explanatory view of a sewage treatment apparatus for a vehicle according to the present invention, and FIG. 2 is a time chart showing an operating state of the present invention.

  Next, the sewage treatment apparatus for vehicles according to the present invention will be described with reference to FIGS. 1 and 2 showing one embodiment. The sewage treatment apparatus for vehicles includes a sewage receiver 1 which is a urinal provided in a vehicle, a sewage pipe 2, a filth tank 3, an exhaust pipe 4, an upstream on-off valve 5, and a downstream on-off valve 6. And a control unit (control unit) 7 and a cleaning switch 8. Reference numeral 9 denotes a portion that separates the inside of the vehicle from the outside of the vehicle, and in the embodiment, a portion of the inside floor of the vehicle.

  The sewage receiver 1 is a urinal for children in this embodiment, but may be a urinal for adults. The sewage receiver 1 is provided with a water supply pipe 70 that can be freely opened and closed at the top. The water supply pipe 70 is connected to a water supply tank 71 upstream thereof, and a cleaning valve 72 that is an electromagnetic on-off valve opens and closes in an appropriate state to supply water to the sewage receiver 1 and clean the sewage receiver 1. The control unit 7 receives a detection signal and transmits an instruction signal to the cleaning valve 72, the cleaning switch 8, the upstream opening / closing valve 5, and the downstream opening / closing valve 6 according to a program inputted in advance. The cleaning switch 8 includes a photoelectric sensor or a push button switch.

  In this embodiment, the sewage pipe 2 is formed by connecting an upper sewage pipe 20, an intermediate sewage pipe 21, and a lower sewage pipe 22 in series, and the upper sewage pipe 20 is connected to the sewage receiver 1 at the upstream end. The lower sewage pipe 22 is connected to the filth tank 3 at the downstream end. An upstream opening / closing valve 5 is provided between the upper sewage pipe 20 and the intermediate sewage pipe 21 and in the vehicle interior part, and between the intermediate sewage pipe 21 and the lower sewage pipe 22 and downstream in the vehicle outer part. An on-off valve 6 is provided.

  In another embodiment of the sewage pipe 2, the upstream side opening / closing valve 5 may be provided at the upper end of one sewage pipe, that is, at the connection between the sewage pipe 2 and the sewage receiver 1 and in the interior of the vehicle. A downstream opening / closing valve 6 may be provided at the lower end of the sewage pipe 2, that is, at the connection part between the sewage pipe 2 and the filth tank 3 and on the outside of the vehicle. In this embodiment, an exhaust pipe 4 to be described later is provided so as to branch from the middle of the pipe to a position that becomes an in-vehicle portion at the middle part of one sewage pipe 2.

The upstream side open / close valve 5 and the downstream side open / close valve 6 are slide type open / close valves comprising an electromagnetic air slide valve in this embodiment. You may comprise. 73 is an air tank which supplies air to the air slide valve. The upstream opening / closing valve 5 and the downstream opening / closing valve 6 are controlled by the control unit 7 so that at least the mutual opening state does not occur at the same time. That is, when the upstream opening / closing valve 5 is open, the downstream opening / closing valve 6 is closed, and when the downstream opening / closing valve 6 is open, the upstream opening / closing valve 5 is closed.

  The intermediate part sewage pipe 21 is provided with an exhaust pipe 4 that branches off from the middle of the pipe at a position that becomes an in-vehicle portion. An end of the exhaust pipe 4 is opened in the vehicle, and an air vent valve (air vent valve) 40 is provided in the opening, and a deodorizing device 41 is provided outside or inside the air vent valve 40 or inside the exhaust pipe 4. Is provided.

  The filth tank 3 is a device that is connected to the downstream side of each sewage pipe 2 or a filth pipe (not shown) and stores the sewage and filth while the train or train is in use. The filth tank 3 is disposed outside the vehicle below the bottom 9 of the vehicle body and is not subjected to pressure adjustment inside the vehicle.

  Next, the operation of the sewage treatment apparatus for vehicles according to the embodiment of the present invention will be described based on the operation time chart of FIG. In a state where the user does not use the vehicle, the upstream side open / close valve 5 and the downstream side open / close valve 6 are closed by an instruction from the control unit 7. Even if the vehicle enters the tunnel in this state, the pressurization in the pipe is stopped there by the downstream opening / closing valve 6 and does not spread to the upstream part.

Next, after the user makes a small use, a signal is sent to the control unit 7 by the cleaning switch 8. Upstream side switching valve 5 and at the same time water washing to the sewage receptacle 1 by flush valve 72 and the upstream side switching valve 5 signal is sent to the flush valve 72 is opened from the control unit 7 is also opened. In this embodiment, the opening time of the cleaning valve 72 and the opening time of the upstream side opening / closing valve 5 are about several seconds, and the opening / closing valves 72 and 5 are closed after the elapse of time.

  When the washing switch 8 is a photoelectric sensor, it automatically detects that the user has left the sewage receiver 1 after the small use and sends a detection signal to the control unit 7. When the cleaning switch 8 is a push button switch, a signal for opening the cleaning valve 72 and the upstream side open / close valve 5 is sent to the control unit 7 by pressing the push button of the user after use. The sewage flows from the upper sewage pipe 20 through the middle sewage pipe 21 by gravity and flows to the downstream opening / closing valve 6 where it is stopped and collected for a moment.

  Next, the upstream side open / close valve 5 is automatically closed after a lapse of time, and the downstream side open / close valve 6 which has been closed several seconds after the closing is opened. This program is set in advance and input to the control unit 7. The downstream on-off valve 6 is closed after a few seconds in response to an instruction from the control unit 7. With the upstream side opening / closing valve 5 closed, the downstream side opening / closing valve 6 is opened, and the sewage is dropped from the lower sewage pipe 22 to the waste tank 3.

  This state is the state before use by the user (see column 0022), and the sewage sequentially repeats the above-described action as the user sequentially uses it. These operations are automatically performed according to a program previously input to the control unit 7.

  Therefore, even when the vehicle enters the tunnel and the filth tank 3 is pressurized with the downstream side opening / closing valve 6 open, the pressure in the pipe is stopped there by closing the upstream side opening / closing valve 5, and further to the upstream side. It doesn't spread. Therefore, sewage does not flow back into the sewage receiver 1. Even if the vehicle enters the tunnel with the upstream side opening / closing valve 5 open, the downstream side opening / closing valve 6 is closed, so that the pressurization in the pipe stops there and does not reach the upstream part.

Further, since the air vent valve 40 is provided between the upstream side open / close valve 5 and the downstream side open / close valve 6 and the opening is disposed in the interior of the vehicle, this occurs in a state where sewage is accumulated in the downstream side open / close valve 6. air containing odor, but is exhausted from the exhaust pipe 4 into the vehicle through the air disconnect came valve 40, the odor because through the deodorizing device 41 this time is missed. Further, since the opening of the exhaust pipe 4 is inside the vehicle, no pressure is received from the outside.

The present invention is highly likely to be installed and used in trains, trains, in particular, Shinkansen (registered trademark) vehicles, long-distance trains, and trains. Particularly useful for urinals for children that drop sewage by gravity.

The embodiment of this invention is shown and the model explanatory view of the sewage treatment device for vehicles Similarly, a time chart showing the operating state of the present invention

Explanation of symbols

1 sewage receptacle 2 dirty water pipe 20 upper dirty water pipe 21 intermediate section dirty water pipe 22 lower dirty water pipe 3 dirt tank 4 exhaust pipe 40 air disconnect can valve 41 deodorization device 5 upstream side switching valve (solenoid slide valve)
6 Downstream open / close valve (electromagnetic slide valve)
7 Control unit (control unit)
70 Water supply pipe 71 Water supply tank 72 Cleaning valve (electromagnetic on-off valve)
73 Air tank 8 Cleaning switch 9 Portion that separates vehicle interior and exterior (vehicle floor)

Claims (1)

A sewage treatment apparatus for a vehicle that sends sewage from a sewage receiver for urine provided in a vehicle to a waste tank provided outside the vehicle,
A sewage pipe that guides the sewage moving by gravity from the sewage receiver to the waste tank;
An upstream on-off valve provided upstream of the sewage pipe;
A downstream on-off valve provided on the downstream side of the sewage pipe,
An air vent valve provided between the upstream side open / close valve and the downstream side open / close valve, for discharging air containing odor generated in a state where sewage is accumulated by the downstream side open / close valve ;
Have
The upstream side open / close valve and the downstream side open / close valve do not open simultaneously ,
An air vent valve is installed in the interior of the vehicle, and a deodorizing device is provided in the vicinity of the air vent valve or in the piping to the air vent valve. Odor-containing air is deodorized by the deodorizing device and is discharged into the vehicle through the air vent valve. Sewage treatment equipment for vehicles.

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