JP3713398B2 - Grease interception method inside railway viaduct - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention accepts wastewater (hereinafter referred to as “kitchen wastewater”) containing oil and fat discharged from a kitchen sink (hereinafter referred to as “kitchen wastewater”) and removes the fat and oil from the kitchen wastewater (hereinafter referred to as “treated water”). ) As a grease blocking method inside a railway viaduct using a grease blocking device that discharges as
[0002]
[Prior art]
Conventionally, in a restaurant provided inside a railway structure, for example, a viaduct, kitchen drainage generated by cooking, washing dishes, or the like in the kitchen is poured into a sink. This kitchen drainage contains animal or vegetable oils and fats (hereinafter referred to as “oils and fats”).
[0003]
When such kitchen wastewater is directly flowed into a sewage basin or the like, oil and fat in the kitchen sewage adheres to the inner wall surface of the sewage pipe in the form of grease and clogs the sewage pipe and the like. In addition, oils and fats can be decomposed by bacteria in nature, but if the content in water is large, decomposition becomes difficult and water quality deteriorates.
[0004]
For this reason, the NH value (normal hexane extractable substance content) is defined as one of the indexes for regulating the content of fats and oils in the waste water, and it is possible to prevent water pollution by setting the value to a predetermined value or less. It is stipulated by the law, the Sewerage Law, the Building Standards Law, the regulations of local governments, etc. Along with this, in kitchens and the like of restaurants and the like, it is obliged to install drainage facilities (hereinafter referred to as “grease interceptors”) for collecting and removing fats and oils from kitchen wastewater.
[0005]
Next, a conventional grease interceptor will be described with reference to FIGS. 4 and 5. As shown in FIGS. 4 and 5, the conventional grease interceptor 50 is installed under the floor below the kitchen sink 40 of a restaurant or the like provided inside the railway viaduct.
[0006]
The kitchen drainage W1 containing the oil and fat discharged from the sink 40 is passed through the drain pipe 42 from the discharge port 41 at the lower end of the sink 40 and guided to the grease interceptor 50 from the water receiving port 54. The grease interceptor 50 is partitioned into a first tank 51, a second tank 52, and a third tank 53 by a first partition plate 55, a second partition plate 56, and a third partition plate 57.
[0007]
For this reason, the kitchen drainage W1 enters the first tank 51, passes through the leftover basket 61 (see FIG. 5) provided with a large number of small holes, and descends from the communication gap below the first partition plate 55. It goes up into the two tanks 52 and rises, and goes down above the second partition plate 56. At this time, since the kitchen drainage W1 is gradually cooled, the oil and fat contained in the kitchen drainage W1 is deposited. Since the oil and fat is lighter than water, the oil and fat deposited from the kitchen drainage W1 floats and gathers on the water surface of the second tank 52 and solidifies into a grease-like oil and fat G. Thereby, a part of the oil and fat in the kitchen drainage W <b> 1 is captured on the water surface of the second tank 52.
[0008]
Thereafter, the drainage passes over the second partition plate 56 and descends below the second tank 52, enters the third tank 53 through the communication gap below the third partition plate 57, and enters the interior from the opening of the drain cover 63. Enter. At this time, the remaining portion of the oil and fat in the kitchen drainage W1 is also deposited on the water surface of the third tank 53 by the same action as in the second tank 52. For this reason, the water discharged | emitted from the 3rd tank 53 outside becomes the processed water W2 from which the fats and oils were removed from the kitchen wastewater W1. The treated water W2 is then discharged to the outside from the drain port 62 via the drain pipe 64.
[0009]
[Problems to be solved by the invention]
However, in the conventional grease interceptor 50 as described above, since the cabinet 60 is attached under the floor of the kitchen sink 40, a part of the floor slab 71 and the floor concrete 72 provided inside the railway viaduct is used. It was necessary to cut out and provide an opening. In order to prevent such a cut portion from becoming a structural weak point, measures such as arranging reinforcing bars inside the floor slab 71 around the cut portion and reinforcing the floor beam 74 are necessary. There is a problem that the equipment cost is expensive.
[0010]
In addition, a double pit bottom board 73 is provided below the grease interceptor 50 as a preventive measure against water leakage downward or as a preventive measure for falling objects when changing the internal layout of the kitchen. It has increased further.
[0011]
Further, the grease-like oil G accumulated in the second tank 52 needs to be removed when it is accumulated to some extent. However, since the grease interceptor 50 is disposed under the floor, the removal operation is difficult and labor-intensive. There was also a risk that the person would fall.
[0012]
The present invention has been made to solve the above-mentioned problems, and the problem to be solved by the present invention is that the inside of a railway viaduct using a grease interceptor having a low equipment cost and an oil removal effect equivalent to that of a conventional product. It is to provide a grease interception method.
[0013]
[Means for Solving the Problems]
In order to solve the above-mentioned problem , a grease blocking method inside a railway viaduct according to claim 1 of the present invention is as follows.
A position above the floor concrete (72) on the floor slab (71) supported by the floor beam (74) of the railway viaduct and directly below the outlet (41) of the kitchen sink (40) inside the railway viaduct A grease interceptor (10) is installed in the water interceptor (14) of the grease interceptor (10) and the outlet (41) of the kitchen sink (40) including a flexible synthetic resin material or a bellows structure. Connected by a flexible first connecting pipe (27);
The grease interceptor (10) includes a first tank (11) for receiving the kitchen drainage (W1) containing oil discharged from the kitchen sink (40) from the water receiving port (14), and the first tank The fats and oils (G) in the kitchen drainage (W1) communicating with the tank (11) at the bottom and entering from the first tank (11) are floated on the water surface and collected from the kitchen drainage (W1). (G) is removed from the second tank (12) to be treated water (W2), and the treated water is communicated at the bottom with the second tank (12) and enters the second tank (12). After temporarily storing (W2), a third tank (13) for discharging from the drain port (22) is provided,
A flexible second connecting pipe including a flexible synthetic resin material or an accordion structure between a floor opening (72a) provided in the floor concrete (72) and a discharge opening (22) of the grease interceptor (10) ( 28)
A drain pipe (29) is connected to the floor opening (72a) and passes through the inside of the floor concrete (72) and the floor slab (71) to communicate with the lower part of the floor slab (71),
On the outer bottom of the containment vessel (20) of the grease interceptor (10), a caster wheel (24) or a sled-like member that slides on the upper surface of the floor concrete (72) or a rail provided on the upper surface of the floor concrete (72). A moving means including a sled-like member that slides on the member to be included;
At the time of grease interception work, the grease (G) is removed from the kitchen drainage (W1) by the grease interceptor (10) installed immediately below the kitchen sink (40) to obtain the treated water (W2). The grease interceptor (10) is discharged to the outside through the water distribution pipe (29), and the grease interceptor (10) is pulled by pulling the handle (25) of the storage container (20) of the grease interceptor (10) at the time of inspection or oil removal operation. wherein the Ru withdrawable der from a position directly below the kitchen sink (40).
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0019]
FIG. 1 is a conceptual diagram showing a configuration of a grease interceptor according to an embodiment of the present invention. FIG. 1 (A) is a layout diagram in a kitchen, and FIG. 1 (B) is a relationship with a kitchen sink and grease. The conceptual diagram which shows the whole structure of an interceptor is shown, respectively. 2 is a diagram showing a specific configuration of the grease interceptor shown in FIG. 1. FIG. 2 (A) is a front view of the kitchen sink and the grease interceptor, and FIG. 2 (B) is an upper surface thereof. Each figure is shown. 3 is a diagram showing a specific configuration of the grease interceptor shown in FIG. 1. FIG. 3 (A) is a side view in FIG. 2, and FIG. 3 (B) is a front view of the grease interceptor. Each cross-sectional view is shown.
[0020]
As shown in FIG. 1 (A), the grease interceptor 10 according to the present embodiment includes an outlet 41 and a kitchen of a kitchen sink 40 immediately below a kitchen sink 40 of a restaurant or the like provided inside a railway viaduct. Between the upper surface of the floor (in this case, floor concrete 72).
[0021]
Further, the grease interceptor 10 is provided with a partition wall 19 (see FIGS. 2 and 3) inside a hollow box-shaped housing 20, and the partition wall 19 allows the housing to be formed as shown in FIG. The internal space of the body 20 is partitioned into a substantially “U” shape as a whole. Further, a first partition plate 15, a second partition plate 16, a third partition plate 17, and a fourth partition plate 18 are attached in the housing 20.
[0022]
By these partition plates, the above-described substantially “U” -shaped housing internal space is conceptually shown in FIG. 1B, as shown in FIG. 1B, the first tank 11, the second tank 12, and the third tank 13. It is divided into. That is, the tank having the water surface from the inner wall of the casing 20 to the first partition plate 15 as one end of the above-described substantially “U” -shaped casing internal space is the first tank 11, and the first partition The tank having the water surface from the plate 15 to the third partition plate 17 is the second tank 12, and the casing 20 that is the other end of the substantially “U” -shaped casing internal space from the third partition plate 17. A tank having a water surface up to the inner wall is the third tank 13.
[0023]
The first tank 11 is provided with a water receiving port 14, and the third tank 13 is provided with a drain port 22. The discharge port 41 of the kitchen sink 40 and the water receiving port 14 are connected by a first connection pipe 27 (see FIG. 2A). The drain port 22 of the third tank 13 and the floor opening 72a are connected by a second connection pipe 28 (see FIG. 2A). The first connecting pipe 27 and the second connecting pipe 28 are flexible due to a soft synthetic resin material, a bellows structure, or the like.
[0024]
In addition, a vegetable basket 21 (see FIGS. 2 and 3) having a large number of small holes is provided below the water receiving port 14 in the first tank 11. Further, the drain outlet 22 in the third tank 11 is provided with a drain outlet cover 23 (see FIGS. 2 and 3).
[0025]
In addition, caster wheels 24 are attached to the outer bottom portion of the casing 20. Further, a lid 26 is provided on the upper portion of the casing 20, and a handle 25 is provided on the front side surface of the casing 20.
[0026]
With the configuration as described above, the kitchen drainage W1 containing oil discharged from the discharge port 41 of the kitchen sink 40 is received from the water receiving port 14 to the inside of the grease interceptor 10, and the leftover basket 21 is used for vegetable scraps and the like. The water is scraped off, and only water passes through the small holes and enters the first tank 11.
[0027]
The kitchen drainage W1 that has passed through the leftover basket 21 descends in the first tank 11. The lower part of the first partition plate 15 does not reach the lower end of the casing and is open, and the first tank 11 communicates with the second tank 12 at the bottom. For this reason, the kitchen drainage W1 enters the second tank 12 from the communication gap below the first partition plate 15 and rises.
[0028]
The upper part of the second partition plate 16 does not reach the upper end of the casing, and the upper part is open. For this reason, the drainage goes down above the second partition plate 16. At this time, since the kitchen drainage W1 is gradually cooled, the oil and fat contained in the kitchen drainage W1 is deposited. Since the oil and fat is lighter than water, the oil and fat precipitated from the kitchen drainage W1 floats and gathers on the water surface of the second tank 12 and solidifies into a grease-like oil and fat G. Thereby, a part of the oil and fat in the kitchen drainage W <b> 1 is captured on the water surface of the second tank 12.
[0029]
The lower part of the third partition plate 17 does not reach the lower end of the casing and is open, and the second tank 12 communicates with the third tank 13 at the bottom. For this reason, the treated water W <b> 2 enters the third tank 53 through the communication gap below the third partition plate 17. The upper part of the fourth partition plate 18 does not reach the upper end of the casing, and the upper part is open. For this reason, the treated water W <b> 2 rises in the third tank 13 and is temporarily stored in the third tank 13.
[0030]
At this time, the remaining portion of the oil and fat in the kitchen drainage W1 is also deposited and captured on the water surface of the third tank 13 by the same action as in the second tank 12. For this reason, the water discharged | emitted from the 3rd tank 13 to the outside turns into the processed water W2 from which the fats and oils were removed from the kitchen wastewater W1. Thereafter, the treated water W2 enters the inside from the lower opening of the drain cover 23, and is discharged to the outside through the second connection pipe 28, the floor opening 72a, and the drain pipe 29 (see FIG. 1A). Is done.
[0031]
The grease interceptor 10 of this embodiment has the following operations and effects.
[0032]
1) The floor slab need only be provided with a minimum hole (floor opening 72a, etc.) for allowing the drainage pipe 29 to pass therethrough, and there is no need to provide a large opening as in the prior art. Since it becomes unnecessary and the double pit bottom board 73 is also unnecessary, the equipment cost can be greatly reduced. In addition, since another drainage pipe (not shown) communicating with the second connection pipe 28 can be arranged on the floor and a floor opening can be provided at a location far from the sink 40, the sink 40 is located immediately above the track. Even so, there are no restrictions.
[0033]
2) Since the grease interceptor is installed on the floor, there is no need to cut out a part of the floor, and the layout when installing a kitchen etc. inside the viaduct becomes very free and the construction cost can be reduced. The construction period can be shortened.
[0034]
3) If the first connecting pipe 27 is removed and the handle 25 is pulled, the caster wheel 24 is provided so that the caster wheel 24 can be easily pulled out. It is possible to easily and safely remove the grease-like oil G accumulated in the water. In addition, it is easy to return the grease interceptor 10 to the lower position of the sink 40 after inspection and oil removal work. Alternatively, it is easy to replace the grease interceptor 10 with a new one.
[0035]
In the above description, the casing 20 corresponds to a storage container, and the caster wheels 24 correspond to moving means.
[0036]
The present invention is not limited to the above embodiment. The above-described embodiment is an exemplification, and the present invention has substantially the same configuration as the technical idea described in the claims of the present invention, and any device that exhibits the same function and effect is the present invention. It is included in the technical scope of the invention.
[0037]
For example, in the said embodiment, although the 3rd tank connected with a 2nd tank and a bottom part was provided and the example which provides a drain outlet in a 3rd tank was demonstrated, this invention is not limited to this example, Other structures For example, you may provide a drain outlet in the lower part of a 2nd tank (back position rather than a 2nd partition plate). Since a significant portion of the grease-like oil is collected and captured on the water surface of the second tank, the required grease blocking function can be achieved even with such a configuration.
[0038]
Moreover, in the said embodiment, although the example which uses the caster wheel 24 as a moving means was demonstrated, this invention is not limited to this example, For example, the rail provided directly on the floor or another structure, for example A moving means having a configuration like a “sledge” that slides on a member such as the like may be used.
[0039]
【The invention's effect】
As described above, according to the present invention, the grease interceptor is arranged between the outlet of the kitchen sink and the upper surface of the kitchen floor, and thus has the following advantages.
[0040]
a) In the grease interceptor of the present invention, it is only necessary to provide the floor structure with a minimum hole for passing a drain pipe and the like, and it is not necessary to cut out a large opening as in the prior art. Since it becomes unnecessary and a double pit bottom is not required, the equipment cost can be greatly reduced. In addition, it is possible to place another drainage pipe communicating with this grease interceptor on the floor and provide a floor opening far away from the kitchen sink, so there are restrictions even if the sink is located directly above the track. I do not receive it.
[0041]
b) Since the grease interceptor according to the present invention is installed on the floor, the construction for cutting a part of the floor structure is not performed, and the layout when installing a kitchen etc. inside the viaduct becomes very free. Cost can be reduced and construction period can be shortened.
[0042]
c) Since the grease interceptor of the present invention is provided with a moving means, it can be easily installed or removed at the lower position of the sink, and the operation for removing the oil and fat deposited from the kitchen drainage can be performed easily and safely. It can be carried out.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram showing a configuration of a grease interceptor according to an embodiment of the present invention.
FIG. 2 is a diagram (1) showing a specific configuration of a grease interceptor according to an embodiment of the present invention.
FIG. 3 is a diagram (2) showing a specific configuration of a grease interceptor according to an embodiment of the present invention.
FIG. 4 is a conceptual diagram showing a configuration of a conventional grease interceptor.
FIG. 5 is a cross-sectional view showing a specific configuration of a conventional grease interceptor.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Grease interceptor 11 1st tank 12 2nd tank 13 3rd tank 14 Water receiving port 15 1st partition plate 16 2nd partition plate 17 3rd partition plate 18 4th partition plate 19 Bulkhead 20 Case (containment container)
21 Vegetable basket 22 Drain port 23 Drain port cover 24 Caster wheel (moving means)
25 Handle 26 Lid 27 First connection pipe 28 Second connection pipe 29 Drain pipe 40 Sink base 41 Discharge port 42 Drain pipe 50 Grease interceptor 51 First tank 52 Second tank 53 Third tank 54 Receiving port 55 First partition plate 56 Second partition plate 57 Third partition plate 60 Housing 61 Vegetable basket 62 Drain port 63 Drain port cover 64 Drain pipe 71 Floor slab 72 Floor concrete 72a Floor opening 73 Double pit bottom 74 Floor beam G Grease-like oil W1 Kitchen drainage W2 Treated water

Claims (1)

A position above the floor concrete (72) on the floor slab (71) supported by the floor beam (74) of the railway viaduct and directly below the outlet (41) of the kitchen sink (40) inside the railway viaduct A grease interceptor (10)
A flexible first connecting pipe (27) including a flexible synthetic resin material or a bellows structure between the water receiving port (14) of the grease interceptor (10) and the discharge port (41) of the kitchen sink (40). ) And connect
The grease interceptor (10) includes a first tank (11) for receiving the kitchen drainage (W1) containing oil discharged from the kitchen sink (40) from the water receiving port (14), and the first tank The fats and oils (G) in the kitchen drainage (W1) communicating with the tank (11) at the bottom and entering from the first tank (11) are floated on the water surface and collected from the kitchen drainage (W1). (G) is removed from the second tank (12) to be treated water (W2), and the treated water is communicated at the bottom with the second tank (12) and enters the second tank (12). After temporarily storing (W2), a third tank (13) for discharging from the drain port (22) is provided,
A flexible second connecting pipe including a flexible synthetic resin material or an accordion structure between a floor opening (72a) provided in the floor concrete (72) and a discharge opening (22) of the grease interceptor (10) ( 28)
A drain pipe (29) is connected to the floor opening (72a) and passes through the inside of the floor concrete (72) and the floor slab (71) to communicate with the lower part of the floor slab (71),
On the outer bottom of the containment vessel (20) of the grease interceptor (10), a caster wheel (24) or a sled-like member that slides on the upper surface of the floor concrete (72) or a rail provided on the upper surface of the floor concrete (72). A moving means including a sled-like member that slides on the member to be included;
At the time of grease interception work, the grease (G) is removed from the kitchen drainage (W1) by the grease interceptor (10) installed immediately below the kitchen sink (40) to obtain the treated water (W2). The grease interceptor (10) is discharged to the outside through the water distribution pipe (29), and the grease interceptor (10) is pulled by pulling the handle (25) of the storage container (20) of the grease interceptor (10) at the time of inspection or oil removal operation. It can be pulled out from the position directly under the kitchen sink (40).
Grease interception method inside railway viaduct characterized by

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