JP2012158971A - Equipment and method for conveying filth in public lavatory - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide filth conveying equipment for water-saving toilet bowls that do not discharge a large quantity of water in a public lavatory having a large number of closet bowls disposed in series.SOLUTION: A U-shaped invert 1 used in a conventional large-sized public lavatory is utilized, and filthy water utilized for toilet bowl washing is flowed from the upstream side of the U-shaped invert 1 for conveyance of filth and filthy water accumulated in the U-shaped invert 1. The filthy water is circulated by a constant quantity at each fixed time interval. This enables mounting of super-water-saving toilet bowls or ultrasuper-water-saving toilet bowls.

Description

Detailed Description of the Invention

  The present invention relates to a sewage and sewage transport apparatus and transport method for a large public toilet in which several toilets are arranged in series.

Technical background

The present invention is a drainage device that uses a U-shaped drainage groove called a U-bart to flow down waste and washing water discharged from a flush toilet.
U-Bert is used in toilets of road break facilities, has a much larger cross-sectional area than ordinary drain pipes, has enough space at the top of the pipe, and has a 300mm PVC pipe at the bottom. Due to the halved size, it will not clog even if some foreign matter enters. (The cross section is shown in FIG. 1) Moreover, since the upper part is a lid type, it does not take time to dig up the pipe even in the event of repair. Also, the lost items in use are difficult to be washed away.

  If this U-Bert is used at a normal gradient, a large amount of water is required for transporting filth, so a water-saving toilet cannot be used, and a flush toilet with a large washing water volume of 13 liters / time is used. This increases the water and sewerage charges.

On the other hand, the water-saving technology of toilets has advanced greatly, and 4.8 liters / time super-water-saving toilets have been released for household use, and water of 1 liter / time or less has been drained to remove large dirt from toilets. Super-water-saving toilets are also available on the market that collect the water used to clean the toilet bowl in a separate flow path after it has passed through the road, and sterilize it by filtration to circulate and use it as toilet flushing water.
When such a toilet is used for a public toilet, an extremely large water saving effect can be obtained.
・ Approximately 63% when using a toilet 4.8 l / time
・ 95% when using extra-water-saving toilets (0.6 liters / drop wash water)
Since U-Bert is not being used effectively at present and is an obstacle to saving water, I would like to consider how to use this U-Bart effectively.
Japanese Patent No. 4237725

Model document 2

  Utility model registration No. 3118862

Problems to be solved by the invention

  Using the features of U-Bert with ample space at the top of the pipe, from the 4.8 liter / time super water-saving toilets currently marketed for residential use to the 0.8 liter / time ultra-super water-saving toilets, We propose a method that can be installed and that can exhibit the excellent characteristics of U-Bert.

Means for solving the problem

  In order to solve the above-described problems, the present invention collects various other water without relying on toilet flushing water and uses it as a transport water to further circulate the transport water. As long as it flows in a culvert, its use is permitted even in septic tank drainage, and there is no problem even if sewage is used for transportation.

The present invention has the following configuration.
1. A water collection tank is provided on the downstream side of the U-bart connected to several toilets, and other waste water, cleaning water, etc., are also allowed to flow into the tank, and a waste pump provided in the tank is required. And a desired amount of water is circulated and sent upstream of the U-Bert.
2. A U-bart transport water tank is provided upstream of the U-bart, and rainwater, river water, pool water, and the like are stored therein, and a desired amount of water is supplied from the water collecting tank to the U-bart at a desired interval.

In the water collecting tank 3 provided on the downstream side of the U-Bert, miscellaneous waste water and cleaning water are allowed to flow from other sources in addition to the filth and the washing water. Even if there are a plurality of toilet series, the water collection tank is installed at a position where water can be sent as much as possible above each U-bart. When pumping water directly to the upstream side of the U-bert, the amount of water to be delivered is set from 30 liters to 50 liters, and the amount of water of 1 liter per second is intended for delivery. The amount of water delivered at one time is determined by the number of toilets installed.
Although the number of water delivery is based on the calculation of the number of users, a microcomputer function that can change the water delivery interval according to the fluctuation of the number of people is installed.
The pump is preferably a sludge pump that crushes and conveys soft solids.
The water pump is provided with a switching valve on a pipe line in the water collection tank, and is linked to a float valve switch that senses the water level of the tank, so that sewage exceeding the required amount is automatically fed to the septic tank or the sewage treatment apparatus.

In parking areas where there are no wastewater drainage stores, etc., a U-bart washing water tank 4 is installed upstream of the U-Bert in order to compensate for the circulated water that gradually decreases due to the circulation evaporation, and water, rainwater, spring water, etc. Add and save.
This tank is provided with a water outlet having a considerably large diameter, and a butterfly valve and the like are opened and closed so that a desired amount of water flows. At this time, the water supply pump from the water collecting tank 3 to the U-bart washing water tank 4 may have a small capacity. Of course, the overflow water from the U-Bart washing water tank enters the water collection tank 3, and the excess water is sent to the septic tank or the processing apparatus.

The invention's effect

A. According to the first and second aspects, a super-water-saving toilet with 4.8 liters / time and a super-water-saving toilet with 0.8 liters / time can be installed, and filth can be transported without problems.
B. As a result, the effect of limiting the water charge can be obtained, and the quantitative burden on the septic tank and the treatment plant can be reduced, resulting in the effect of reducing CO2.
C. Lost items that fall to U-Bert are pushed by a large amount of water and reach the water collection tank, so they can be picked up by the water collection tank.
D. According to claim 2, there is no need to worry about transport water even in a parking area where there is no miscellaneous drainage.

FIG. 3 illustrates one form of the waste transporting apparatus according to the present invention, in which several water-saving, super-water-saving, and ultra-super-water-saving toilets are installed directly above the U-Bert and are divided into booths.
A circulating sewage pipe C from the water collecting tank is connected to the upstream part of the U-bart, and a sewage pump P is installed in the water collecting tank. The sewage pump is preferably a pump that crushes soft impurities such as paper and sends the water.

A branch valve is provided in the water collection tank in the pipe C from the pump, and when the full water level is reached by the operation of the float switch, the valve is switched, and the water is sent to the septic tank and the processing device through the connected drainage channel E. . The operation of the pump in other cases is linked to a microcomputer that changes the time of water supply according to changes in the number of toilet bowls, the length of the U-bart, and the number of users, and an arbitrary time is set.
Both pipes C and E for pumping water are desirably thick pipes having a diameter of 50 mm or more.

  In addition to the filth and washing water flowing in and flowing into the water collection tank, if there is a water source that discharges miscellaneous wastewater, it flows in. Of course, hand washing water and cleaning water are allowed to flow in. When there is no miscellaneous drainage source, a U-bart washing water tank 4 is provided upstream of the U-bart and a pipe D is replaced with the pipe C, and the sewage in the water collecting tank is collected in the tank and the insufficient water is stored in rainwater. Water, well water, spring water, etc. The overflow is returned to the water collection tank through a separate pipe line. The water stored in the U-bart washing water tank is connected to a large-diameter drain, and flows into the U-bart by opening and closing a large water supply valve for supplying a desired amount of water by operating a microcomputer.

  As described above, U-Bart effectively utilizes the extra space of the upper space, which is a feature of the U-bart, and trash and paper accumulated in the lower part of each toilet are swept away and carried to the water collection tank.

U bar cross section Operating system diagram

1 U-Bart 2 Extra-super-water-saving toilet 3 Water collection tank 4 U-Bart washing water tank A Other miscellaneous drainage inflow pipe B Soil plus washing water inflow pipe C Water feeding pipe upstream of U-Bert D Water feeding pipe to U-Bat washing water tank E Water supply pipeline to septic tank or processing equipment

Claims (3)

A water collection tank is provided on the downstream side of the U-bart connected to several toilets, and other waste water, cleaning water, etc., are also allowed to flow into the tank, and a waste pump provided in the tank is required. An apparatus for conveying waste in a public toilet, which is operated at intervals according to the flow rate and circulates a desired amount of water upstream of the U-bart. A U-bart water tank connected to the U-bart is installed on the upstream side of the U-bart, where rainwater, well water, pool water, etc. are introduced and stored, and the circulating water from the water collection tank is sent to the tank, and a desired amount of water is supplied at a desired interval. The apparatus for conveying waste in a public toilet according to claim 1, wherein water is fed to U-Bert.   A water collection tank is provided on the downstream side of the U-bart connected to several toilets, and other waste water, cleaning water, etc. are also allowed to flow into the tank, and a sewage pump provided in the tank is required. A method for transporting filth in a public toilet, characterized in that it operates at intervals according to the above and sends a desired amount of water to the upstream side of the U-bart.

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