JP2007296968A - Sewage treatment device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem wherein sewage in a sewage pipe flows backwards to a urinal to be a sewage receiver installed in the vehicle inside of low pressure when high pressure is applied to a sewage tank by traveling, etc. of a vehicle in a tunnel. <P>SOLUTION: This sewage treatment device has the sewage receiver 1 provided in the vehicle, the sewage pipe 2 and the sewage tank 3. In the device, an upstream side switching valve 5 is provided in the vehicle inside part of the sewage pipe 2 for delivering sewage from the sewage receiver 1 to the sewage tank 3, a downstream side switching valve 6 is provided in the vehicle outside part of the sewage pipe 2, and an air vent valve 40 or a deodorizing device 41 and the air vent valve 40 are provided between the upstream side switching valve 5 and the downstream side switching valve 6. The upstream side switching valve 5 and the downstream side switching valve 6 are prevented from being simultaneously made opened states. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a sewage treatment apparatus for a vehicle that is installed in a train, a train, particularly a Shinkansen train, a long-distance train, and a train and that treats sewage such as urine, and more specifically, sewage such as urine from a sewage receiver. The present invention relates to a sewage treatment apparatus for a vehicle in which water is dropped to a waste tank by gravity.

  The sewage treatment equipment for urinals installed in Shinkansen vehicles, long-distance trains, and trains has conventionally used gravity due to gravity as a method of flowing sewage in a urinal to a filth tank via a sewage pipe. It is carried out by two methods, a drop type or a vacuum suction type that sucks in a vacuum, and a single valve element is provided in the middle of the sewage pipe to prevent backflow due to a pressure difference between the inside and outside of the car. It is known. (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 a valve body in each of the upstream and downstream sewage pipes of the intermediate tank to pressurize and depressurize 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. 6-199234 (Prior Art 3) discloses a vehicle ventilator that eliminates passenger discomfort (such as discomfort to the ear) of a high-speed Shinkansen vehicle.
Japanese Patent Laid-Open No. 6-199234 (Prior Art 3)

  In sewage treatment equipment for urinals installed on long-distance trains, in trains, and in particular in sewage treatment equipment for urinals installed in Shinkansen vehicles, urinals used by passengers are installed in the cars, A filth tank for collecting sewage such as urine is provided at the bottom of the vehicle.

  And in the inside of the Shinkansen that is used by passengers, especially in high-speed Shinkansen vehicles, the vehicle interior pressure is kept constant by using a vehicle ventilator as disclosed in Prior Art 3 in order to eliminate the discomfort felt by the passengers' ears. Kept in 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 high-speed Shinkansen is a light section (ordinary ground) and high-speed trains are passing each other, a state where the pressure applied to the filth tank increases to 400 mmAq in addition to the normal atmospheric pressure, 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 the 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.

In order to solve the above-mentioned problem, in a sewage treatment apparatus for a vehicle having a sewage receiver, a sewage pipe, and a filth tank provided in the vehicle,
An upstream on-off valve is provided on the upstream side of the sewage pipe that sends sewage from the sewage receiver to the filth tank, and a downstream on-off valve is provided on the downstream side of the sewage pipe,
An air vent valve is provided between the upstream side open / close valve and the downstream side open / close valve,
Proposed is a sewage treatment apparatus for a vehicle, wherein the upstream side open / close valve and the downstream side open / close valve are not simultaneously opened.

  In the sewage treatment apparatus for vehicles described in the above-mentioned column 0009, there is proposed a sewage treatment apparatus for vehicles provided in a vehicle in which an upstream opening / closing valve is installed in a vehicle interior and a downstream opening / closing valve is installed in an exterior portion. Furthermore, the sewage treatment apparatus for vehicles which provided the deodorizing apparatus in the vicinity of the air vent valve of the said 0009 column description or the said vehicle sewage treatment apparatus of this column, or in the piping which leads to an air vent valve is proposed.

  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. At the same time, since one of the two valves is always closed, even if pressure is applied to the sewage pipe from the outside of the vehicle, the air is exhausted from the air vent valve to receive the sewage via the sewage pipe from the filth tank. The pressure transmitted to the vessel can be prevented. 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. A signal is sent from the control unit 7 to the cleaning valve 72 and the upstream side opening / closing valve 5 so that the cleaning valve 72 is opened, and the upstream side opening / closing valve 5 is also opened at the same time as the sewage receiver 1 is fed and washed. In this embodiment, the opening time of the cleaning valve 72 and the opening time of the upstream on-off valve 5 are about several seconds, and the on-off valves 72 and 5 are closed after the passage 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 open / close valve 6 open, the pressure in the pipe is stopped there by closing the upstream side open / close 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. The odor-containing air is exhausted from the exhaust pipe 4 through the air release valve 40 into the vehicle. At this time, the odor is removed because it passes through the deodorizing device 41. Further, since the opening of the exhaust pipe 4 is inside the vehicle, no pressure is received from the outside.

  The present invention is likely to be installed and used in trains, trains, in particular, Shinkansen 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 Receiver 2 Sewage Pipe 20 Upper Sewage Pipe 21 Middle Sewage Pipe 22 Lower Sewage Pipe 2
3 Soil tank 4 Exhaust piping 40 Air vent valve 41 Deodorizer 5 Upstream on-off valve (electromagnetic 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 vehicle exterior (vehicle floor)

Claims (3)

In a sewage treatment apparatus for a vehicle having a sewage receiver, a sewage pipe, and a filth tank provided in the vehicle,
An upstream on-off valve is provided on the upstream side of the sewage pipe that sends sewage from the sewage receiver to the filth tank, and a downstream on-off valve is provided on the downstream side of the sewage pipe,
An air vent valve is provided between the upstream side open / close valve and the downstream side open / close valve,
The sewage treatment apparatus for vehicles, wherein the upstream side opening / closing valve and the downstream side opening / closing valve are not simultaneously opened. The sewage treatment apparatus for a vehicle according to claim 1 or 2, wherein the upstream side opening / closing valve is installed in a vehicle interior portion, and the downstream side opening / closing valve is provided in a vehicle installed in the vehicle exterior portion. The sewage treatment apparatus for vehicles according to claim 1 or 2, wherein a deodorizing device is provided in the vicinity of the air vent valve or in a pipe to the air vent valve.

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