JPH0240125Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a drainage basin that can simultaneously perform oil separation and deodorization.

(Conventional technology) Gray water discharged from specific business establishments such as cafeterias, restaurants, and ramen shops is supposed to be introduced into the main sewage pipe through a drainage basin with an oil separation function. In addition, in cold regions such as the Tohoku region, the gray water discharged from households is often contaminated with solid oils and fats, so it is necessary to drain gray water from households with a drainage system with a simple oil separation function. It is often introduced into the main sewage pipe after

Conventionally, this type of drainage basin is shown in Figure 8.

The drainage basin shown in Fig. 8 consists of a gray water receiving tank 1 to which a gray water inlet pipe 100 and a sewage outlet pipe 200 are connected. Once stored, when this gray water A exceeds a certain water level, it flows out through the inverted U-shaped waste water outlet pipe 200. As shown in the figure, the starting end 201 of the waste water outlet pipe 200 is immersed in the gray water A stored in the gray water receiving tank 1, and the fats and oils B floating on the surface of the gray water A are transferred to the waste water outlet pipe 200. The structure is such that it does not leak out after passing through the process.

As described above, the drainage basin shown in Fig. 8 can separate oil from gray water A and lead the wastewater to the main sewer pipe, but if this drainage basin is installed in the middle of the main sewer pipe, there is a problem in terms of odor control.

That is, in order to install the drainage basin shown in Fig. 8 in the middle of the main sewage pipe, the main sewage pipe 300 is connected to the gray water receiving tank 1 as shown in Fig. 9, and the main sewage pipe 300 is
Since the wastewater flowing through the tank must be introduced into the gray water receiving tank 1, the odor generated inside the main sewage pipe 300 flows back through the gray water introduction pipe 100 through the internal space of the gray water receiving tank 1, and the gray water is discharged. Odor control is not achieved in the kitchen, bathroom, and other areas where the odor comes from, worsening the living environment.

For this reason, if gray water from a source of gray water containing oil and fat is mixed with the main sewer pipe that carries the waste water from the source of strong-smelling sewage after oil separation, the odor in the main sewer pipe will not flow back. Therefore, it was necessary to take special measures.

For example, as shown in FIG. 10, a main sewage pipe ₃₀₀ in which sewage comes out from a source _of strong-smelling sewage such as a toilet If gray water discharged from Y ₃ is to be combined with oil-separated waste water, drain basins explained in Figure 8 should be installed corresponding to each gray water source Y ₁ , Y ₂ , Y ₃ , and each waste water The starting end of the gray water introduction pipe 100 connected to the gray water receiving tank 1 is connected to each of the gray water generation sources Y ₁ , Y ₂ , Y ₃ ,
Sewage outlet pipe 200 connected to each gray water receiving tank 1
It was necessary to connect the terminal end to the gray water receiving tank 1 of the adjacent drainage basin or to the sewage receiving tank 400 of a collection drainage basin installed in the middle of the main sewage pipe 300.

By doing this, as is clear from FIG. For this reason, the odor generated in the main sewage pipe 300 does not enter the gray water receiving tank 1 via the sewage discharge pipe 200, and therefore, deterioration of the living environment due to backflow of odor can be avoided.

However, in order to prevent odor using the drainage basin shown in Figure 8, as is clear from Figure 10, trench digging work is required to lay the main sewage pipe 300, and the installation of the drainage basin and sewage outlet pipe 200. Not only will it be necessary to carry out trench digging work for
It is necessary to construct the sewage outlet pipe 200 separately from the sewage main pipe 300, and an additional collection drainage basin equipped with the sewage receiving tank 400 is required, resulting in a significant increase in construction cost.

(Problem to be solved by the invention) The problem to be solved by the invention is that even if a drainage basin is installed in the middle of the main sewage pipe, the odor generated in the main sewage pipe will not enter the gray water receiving tank. By providing a drainage basin that can easily separate oil from gray water, it eliminates the need for digging trenches to lay wastewater discharge pipes, which was previously necessary. The aim is to reduce construction costs by reducing the number of drainage basins installed.

(Means for solving the problem) A means for solving the above problem is to equip the drainage basin with a gray water receiving tank and an overflow receiving tank separated by an overflow weir. By installing a partition plate in the tank, it is possible to separate oil from the gray water, and in addition to providing a waste water inlet and a waste water outlet in the overflow receiving tank, the pipe line for the gray water introduction pipe and the inside of the overflow receiving tank are also installed. The space is constructed so that it is water-sealed by gray water stored in a gray water receiving tank.

(Function) According to the above means, the main sewage pipe can be connected to the sewage inlet and the sewage outlet of the overflow receiving tank, which is sealed against the pipe line of the gray water introduction pipe, so that the odor generated in the main sewage pipe is introduced into the gray water. No more backflow through the pipe. In addition, the gray water introduced into the gray water receiving tank is oil-separated by a partition plate, and the oil-separated gray water overflows as sewage into the overflow receiving tank, where it is mixed with the sewage flowing in from the sewage inlet. After merging, the wastewater is led out to the main sewage pipe through the wastewater outlet.

(Example) The drainage basin illustrated in FIG. 1 is a so-called invert structure in which adjusters are stacked in layers to adjust the installation depth. This drainage basin is equipped with an overflow weir 2, and a gray water reception tank 1 is provided on one side of the overflow weir 2, and an overflow reception tank 3 is provided on the other side of the overflow weir 2. The gray water receiving tank 1 is divided into two chambers by a partition plate 4 provided inside, and the first chamber 11 is the gray water receiving tank 1.
The second chamber 12 faces the overflow receiving tank 33 via the overflow weir 2. Further, a gap 5 is maintained between the lower end of the partition plate 4 and the bottom surface of the gray water receiving tank 1.
Through this gap 5, the first chamber 11 and the second chamber 12 are communicated between their bottoms. Next, a covering plate 6 is provided between the upper end of the partition plate 4 and the tank wall of the overflow receiving tank 3.
The cover plate 6, the partition plate 4, and the gray water A stored in the gray water receiving tank 1 cause the internal space 31 of the overflow receiving tank 3 to become the internal space 1 of the gray water receiving tank 1.
It is divided from 3. Further, as clearly shown in FIG. 2, the overflow receiving tank 3 is provided with a sewage inlet 7 and a sewage outlet 8.

According to this drainage system, gray water introduction pipe 1
Gray water A that flowed into gray water receiving tank 1 through 00
is temporarily stored in the gray water receiving tank 1, and when its water level exceeds the overflow weir 2, it overflows from the second chamber 12 to the overflow receiving tank 3 as sewage. The sewage that has overflowed into the overflow receiving tank 3 joins the sewage that has flowed in from the sewage inlet 7 and is led out from the sewage outlet 8. on the other hand,
The oil and fat B mixed in the gray water A that has flowed into the gray water receiving tank 1 floats to the surface of the gray water A in the first chamber 11 without passing through the gap 5, and is separated from the oil. The thus separated fats and oils B are collected from the manhole opening 9 using a stone scoop or the like. In addition, even if the main sewage pipe is connected to the sewage inlet 7 and the sewage outlet 8, the first chamber 11 and the second chamber 12 of the gray water receiving tank 1
Receiving tank 3 is overflowed by gray water A stored in
internal space 31 and internal space 13 of gray water receiving tank 1
Since the water seal between the gray water inlet pipe 100 and the pipe line is achieved, the odor generated in the main sewage pipe will eventually be transferred to the internal space 13 of the gray water receiving tank 1 and the gray water inlet pipe 100.
It does not enter the pipeline.

Therefore, as shown in Fig. 7, the sewage inlet 7 and sewage outlet 8 of the drainage basins installed corresponding to multiple gray water sources Y ₁ , Y ₂ , and Y ₃ are used to remove odor from toilets, etc. Even if it is connected in the middle of the main sewage pipe 300 that carries sewage from the source X where strong sewage is generated, the odor generated in the main sewage pipe 300 will not flow back through the gray water introduction pipe 100, and a complete odor prevention function will be achieved. It can be done.

The drainage basin shown in Figure 3 is a modification of the one shown in Figure 1. That is, the difference from the drainage basin shown in Fig. 1 is that a cover plate 6 is provided between the upper end of the partition plate 4 and the tank wall of the gray water receiving tank 1;
It is similar to the one shown in the figure. In addition, in the drainage basin shown in FIG. 3, if the partition plate 4 and the cover plate 6 are constructed as an integrated unit and made detachable from the gray water receiving tank 1, the oil separated in the first chamber 11 can be removed. collection becomes easier.

In addition, in the case of the drainage basin shown in Fig. 4, a partition plate 4 having a U-shape in plan view is integrally provided on the tank wall of the gray water receiving tank 1, and the upper part formed by the partition plate 4 and the tank wall. The opening is covered with a lid 61. This also achieves the same deodorizing and oil separating functions as those shown in FIGS. 1 and 3. As shown in detail in FIG. 5, since the lid 61 is removable, the oil and fat B separated in the first chamber 11 of the gray water receiving tank 1 (see FIG. 4) can be collected by opening the lid 61. Therefore, it can be easily recovered.

In the case of the drainage basins illustrated in FIGS. 1, 3, and 4, the internal space 31 of the overflow receiving tank 3 and the internal space 13 of the gray water receiving tank 1 are sealed off by water sealing. The pipe line of the gray water introduction pipe 100 is water-sealed from the internal space 31 of the overflow receiving tank 3 to prevent odor.

On the other hand, in the drainage basin according to the other embodiment shown in FIG.
The down pipe 102 is connected to the down pipe 102 via the down pipe 102, and the down pipe 102 is immersed in the gray water A of the first chamber 11 to form a water seal for deodorization. In this case, there is no need to block off the internal space 13 of the overflow receiving tank 3 and the internal space 13 of the gray water receiving tank 1. The other configurations are the same as those described in FIG. 1.

In addition, in the above embodiments and modifications, if the volume of the first chamber 11 is made large, there is an advantage that oil separation from gray water containing a large amount of fats and oils can be easily performed.

(Effect of the invention) As is clear from the explanation of the embodiments, according to the drainage basin according to the invention, the internal space of the overflow receiving tank connected to the main sewage pipe and the pipe line of the gray water introduction pipe are Since it is sealed, odor generated in the main sewage pipe will not flow back through the gray water introduction pipe, and oil can be easily separated from the gray water by the partition plate of the gray water receiving tank. Therefore, the drainage basin according to the present invention can be installed directly in the middle of the main sewage pipe, and there is no need to lay a sewage outlet pipe as in the past, so trench digging work during construction is only necessary for laying the main sewage pipe. This eliminates the need for separate installation of wastewater drain pipes. Furthermore, during construction, the conventionally necessary sewage outlet pipes and collection drainage basins are no longer necessary, so the trench digging work described above can be simplified and construction costs can be significantly reduced. .

In addition, since the drainage basin according to the present invention can be installed directly in the middle of the main sewage pipe, the installation points of the drainage basin can be easily lined up in a straight line, and only the amount of water that is no longer needed for the collection basin mentioned above can be drained. This has the advantage of being able to reduce the number of installations and simplifying construction in terms of appearance.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal side view showing a drainage basin according to an embodiment of the present invention, Fig. 2 is a front view thereof, Fig. 3 is a longitudinal side view showing a modification of the above drainage basin, and Fig. 4 shows another modification. 5 is an exploded perspective view showing the main parts of the drainage basin shown in Figure 4, Figure 6 is a vertical side view showing a drainage basin according to another embodiment, and Figure 7 is a drainage basin according to the present invention. An explanatory diagram showing an example of the construction of a drainage basin. Figure 8 is a vertical side view of a conventional drainage basin. Figure 9 is a vertical side view of a conventional drainage basin installed in the middle of a main sewer pipe. Figure 10 is a vertical side view of a conventional drainage basin. It is an explanatory view showing an example of construction of a drainage basin. 1... Gray water receiving tank, 11... First room, 12...
...Second chamber, 2...Overflow weir, 3...Overflow receiving tank, 3
1... Internal space of the overflow receiving tank, 4... Partition plate, 6
... Cover plate, 61 ... Lid, 7 ... Sewage inlet, 8 ...
Sewage outlet, 100... Gray water inlet pipe, A... Gray water.

Claims (1)

[Scope of utility model registration request] A gray water receiving tank and an overflow receiving tank are installed on both sides of the overflow weir, and the pipe line of the gray water introduction pipe connected to the gray water receiving tank and the internal space of the overflow water receiving tank are connected to the gray water receiving tank. The tank is configured to be water-sealed by the gray water stored in the tank, and a partition plate is provided in the gray water receiving tank, and the first room facing the gray water introduction pipe and the overflow are separated by the partition plate. A second chamber facing the overflow receiving tank communicates between their bottoms, and the overflow receiving tank is provided with a sewage inlet and a sewage outlet.