JP3962117B2 - Oil-water separator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an oil-water separator capable of automatically separating water mixed in an oil storage tank or the like and discharging it out of the system.
[0002]
[Prior art]
An example of a conventional oil / water separator is disclosed in Japanese Utility Model Publication No. 3-83603. This is a partition wall provided in the separator casing, a hollow float having a specific gravity between oil and water is arranged, and a valve body for opening and closing the outlet is connected to this float. The water separated at the partition wall in the casing can be discharged out of the system.
[0003]
[Problems to be solved by the invention]
In the above conventional apparatus, if the float cannot float for some reason, water cannot be discharged from the outlet, but this defect cannot be detected at an early stage.
[0004]
Therefore, the technical subject of this invention is obtaining the oil-water separator which can detect a waste_water | drain failure early.
[0005]
[Means for Solving the Problems]
The means of the present invention devised to solve the above-mentioned problem is that an oil water inlet, a reservoir and an outlet are formed in the separator casing, and the oil water flowing into the reservoir is caused by the difference in specific gravity. In the case where the outlet is opened and closed by floating up and down of the float arranged in the reservoir and the separated water is discharged to the outside of the vessel, a pressure equalizing port is formed in the separator casing to A see-through portion is provided continuously with the pressure port so that the water level in the see-through portion can be detected.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The oil water that has flowed into the casing reservoir is separated and stored in the lower part and the oil in the upper part due to the difference in specific gravity. As the amount of inflowing water increases, the water level in the reservoir rises, and the float rises and opens the outlet, so that the water is discharged out of the vessel. When water is discharged and the water level drops, the float also descends, and the oil is not leaked by closing the outlet.
[0007]
If the float cannot rise for some reason and water cannot be discharged from the outlet, the water level in the reservoir rises and the water level in the fluoroscopic part also rises. By visually observing the rise in the water level in the fluoroscopic part, it becomes possible to detect drainage failure at an early stage.
[0008]
【Example】
Examples of the present invention will be described. In FIG. 1, a separator casing is formed by a main body 1 and a lid 2, an oil water reservoir 3, an oil water inlet 4 and an outlet 5 are provided in the main body 1, and a pressure equalizing port 14 is provided in the lid 2. The oil-water separator is configured.
[0009]
The reservoir 3 communicates with the inflow port 4 and a vertically long float 6 is disposed in a free state in the space. The float 6 has a vertically long shape with a bottomed cylinder, and is provided with a plurality of guides 8, 9, 10, 11 provided in the main body 1 so as to directly open and close the outlet 5 at the center of the lower outer surface 7. It can be moved up and down along. The float 6 can be manufactured as a hollow float by pressing and welding a stainless steel thin plate, or can be manufactured from a synthetic resin having a relatively low specific gravity such as polypropylene or polyethylene. When the float 6 is made of a synthetic resin, a metal thin plate can be attached to the lower outer surface 7 in contact with the outflow port 5 to improve the sealability.
[0010]
The outlet 5 is disposed through the center of the valve seat member 12 screwed to the main body 1, and its downstream side communicates with the outlet 13. The valve seat member 12 is provided with a synthetic rubber seat 15 as an elastic member in a substantially ring shape so as to cover the side surface of the outlet 5 and the outer peripheral surface of the upper end at the upper end portion, and in contact with the outer surface 7 of the float 6. Increases sealability.
[0011]
Under the float 6, support seats 16 and 17 are provided to support the float 6 when it contacts the valve seat member 12. The support seats 16 and 17 allow the lower portion of the float 6 and the main body to be supported. A space 18 is formed between the bottom of 1 and used as a storage space for foreign matters such as dust.
[0012]
The separator casing members 19 and 20 are attached to the lower portion of the main body 1, and a blow pipe 25 communicating with the reservoir 3 is connected via a valve 23.
[0013]
A see-through portion 24 is formed above the pressure equalizing port 14 provided at the lower end of the lid 2, and a pressure equalizing pipe connecting member 26 is connected to the see-through portion 24. The see-through unit 24 is provided with a plurality of windows so that the inside can be seen through, and a glass tube 27 is arranged inside the windows.
[0014]
The state shown in FIG. 1 shows a state in which the float 6 is lowered downward and the outlet 5 is closed. A mixed fluid of oil and water flows in from the inflow port 4 and the water is separated into the lower part 3 and the oil is separated into the upper part and accumulated in the reservoir 3. As the amount of water flowing in increases, the water level in the reservoir 3 rises and reaches the draft line of the vertical float 6, usually about 2/3 of the height of the float 6. When the float 6 floats up and is separated from the valve seat member 12 to open the outlet 5, the water accumulated in the lower part is discharged from the outlet 13 to the outside. When water is discharged and the water level is lowered, the float 6 is also lowered at the same time, and the water collected at the top of the water is leaked by closing the outlet 5 with water remaining at the bottom of the reservoir 3. There is no.
[0015]
If the float 6 cannot rise for some reason and water cannot be discharged from the outlet 5, the water level in the reservoir 3 rises and the water level in the fluoroscopic part 24 also rises. The drainage failure can be detected at an earlier stage than when the rise of the water level in the fluoroscopic part 24 is visually observed.
[0016]
In this embodiment, the float 6 is formed in a vertically long cylindrical shape, so that a larger volume can be secured in a small space compared to the case of a spherical or prismatic shape, and the weight of the float 6 is also increased. It can be increased in proportion to the volume, and the sealing performance when the outlet 5 is closed can be improved.
[0017]
In this embodiment, since the blow pipe 25 is provided, a compressed air pipe, a steam pipe or the like is connected to the outlet 13 side to flow down to the blow pipe 25 side, so that the valve seat member 12 and the float 6 are flown. The lower space 18 can be back-washed and dust and sludge-like oily water turbidity can be removed to the outside.
[0018]
【The invention's effect】
In the present invention, an oil-water separator capable of detecting a drainage failure at an early stage can be obtained by providing a see-through part in a pressure equalizing port so that the water level in the see-through part can be detected.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an embodiment of an oil / water separator according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main body 2 Lid 3 Reservoir part 4 Inlet port 5 Outlet port 6 Float 12 Valve seat member 13 Outlet 14 Pressure equalizing port 24 Transparent part 25 Blow tube 27 Glass tube

Claims (1)

An oil water inlet, a reservoir, and an outlet are formed in the separator casing, and the oil and water flowing into the reservoir are separated by their specific gravity differences. Opening and closing the outlet to discharge the separated water to the outside of the vessel. An oil / water separator characterized in that the water level can be detected.

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