JP2565355Y2 - Oil-water separator - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil / water separator for separating a drain containing oil and water into oil and water, and more particularly to an oil / water separator using an oil absorbing material.

[0002]

2. Description of the Related Art An air compressor that generates about 7 kg / cm ² of compressed air is used as an air source for a compressed air drill, a tacker, a rock drill, an underground drill, an air hammer, an air turbine, and the like. Such an air compressor is used by obtaining compressed air and temporarily storing it in an air tank to reduce fluctuations in air pressure. The air compressor is refueled for lubrication. Therefore, the discharged compressed air contains oil.

[0003] In the air tank, oil and water contained in the compressed air are separated due to pressure and temperature changes and are mixed together at the bottom of the air tank, and are discharged from the air tank through a drain trap. .

Conventionally, in a large-sized air compressor, drain discharged from a drain trap is stored in a reservoir, pumped up from the reservoir using a pump, and guided to an oil-water separator.
Water and oil are separated, water is discharged, and oil is recovered and handed over to reclaimers or processors.

[0005] Conventional oil / water separators include those that separate oil and water based on the difference in specific gravity, those that allow drain to pass through an oil absorbing material, and those that connect them in series. And, to let the drain pass through the oil absorbing material,
Some drain the natural flow. The one that sends the drain under pressure is a configuration that sends the pressurized drain into the pressure vessel and takes out only the clean water from the discharge port.The natural flow type drains the drain from the upper surface of the oil absorbing material layer fixed in the tank to the lower surface and then to the lower surface The clean water is drained out of the tank through the outlet.

[0006] The oil-water separator used in the above-described large-sized air compressor sends a drain pumped by a pump to a specific gravity-difference oil-water separator in a closed tank, and further removes oil from the oil emulsion in the separated drain. For example, compressed air is introduced into a specific gravity difference oil / water separator to send the oil emulsion to a closed oil adsorption tank.

[0007]

When the oil-water separator in the large-sized air compressor is configured as described above, a reservoir and a pump are required, and wiring to a motor for driving the pump and control equipment are required. In a stationary large air compressor, the drain treatment cost is relatively small compared to the entire system, so the above can be done.However, in small and medium air compressors, the incidental equipment cost becomes relatively large, A place for installing a storage tank and a pump is required. Particularly in the case of a portable air compressor, the accompanying equipment must be moved, and the handling method becomes complicated.

Therefore, if an oil-absorbing material layer is simply provided in the tank and the drain is allowed to pass through, the time required for the drain to pass through the oil-absorbing material layer is limited. This has the disadvantage that the oil in the drain flows out without being sufficiently removed. Therefore, it is necessary to provide a means for detecting oil at the outlet of the tank.

[0009] Above all, the oil separating apparatus constituted as a conventional oil absorption tank requires the use of a tool in order to pass the drain through the oil absorbing material fixed in the tank and to remove the oil absorbing material adsorbed with the oil. It is highly possible that people get their hands and clothes dirty.

The present invention is different from the conventional oil / water separator described above in that the oil / water separator is provided at least in a portable air compressor so that the oil absorbing material can be easily replaced and the oil absorbing material exhibits an effective oil absorbing action. The purpose is to provide.

[0011]

According to the present invention, oil-water separation is performed according to a principle different from that of the conventional example, and the separated oil is adsorbed by an oil-absorbing material simultaneously with the specific gravity difference separation of the drain in one closed tank. The present invention has a sealed structure capable of storing drain.
The container has a floating container in which a particulate floating oil absorbing material that floats by a drain flowing into the container while leaving a space in the upper portion is movably mounted, and the container has a floating oil absorbing material through the space.
The drain inlet and exhaust port for sending drain toward the material
An oil-water separation device comprising: a reservoir for collecting oil and water based on a difference in specific gravity due to accumulation of drainage; and adsorbing oil and separated oil in the drain with an oil-absorbing material.

[0012]

[0013]

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 3 is a side view showing the entire use example.

An air compressor, generally designated by the reference numeral 1, is of a known oil supply type. An air compressor 3, a motor 4, and a compressed air outlet 5 are provided on an air tank 2, and the air compressor 3 and the motor 4 are provided. Are connected by a belt device 6.

An inlet 9 of a drain trap 9 is provided through a valve 8 which is normally open from a drain hole 7 of the air tank 2.
a, the outlet 9b of the drain trap 9 and the drain inlet 10a of the oil-water separator 10 are connected by a flexible pipe.

FIG. 2 is a perspective view of the oil / water separator 10, and FIG. 1 is a longitudinal sectional view of FIG. The upper edge 11a of the substantially cylindrical container 11 whose upper surface is open and becomes slightly smaller toward the bottom.
The stepped portion is provided with a stepped portion and has an enlarged diameter, and a ring-shaped seal 12 is accommodated in the stepped portion. The lid 1 is provided via the seal 12.
3, the container 11 is sealed. A drain inlet pipe fitting 14 penetrates through the center of the lid 13 for the drain inlet 10a. The nuts 15 screwed in from both ends of the drain inlet pipe fitting 14 are respectively propelled to tighten the lid 13 so that the drain inlet pipe fitting 14 It is fixed to. The exhaust port 16 has a large number of pores 16a provided around the pipe whose upper end is closed and whose lower end is opened toward the inside of the container 11, and which communicates the inside with the atmosphere. An oil absorbing material 17 is accommodated in the container 11 leaving a space above. The oil absorbing material 17 is, for example, a polypropylene oil absorbing material (trade name: Orsorb) and has a weight of about 1%.
It adsorbs 0-fold oil and does not absorb water. It is granular and lighter than water and floats in water.

Next, the operation will be described. When the motor 4 rotates, the air compressor 3 is operated via the belt device 6, and the motor 4 stops when compressed air is stored in the air tank 2 until the pressure becomes constant. The compressed air is supplied from a compressed air outlet 5 to a working machine through a pipe (not shown), and when the compressed air in the air tank 2 becomes a predetermined amount or less, the motor 4 is driven to replenish the air in the air tank 2 and reduce the air pressure. To increase and stop. The oil and water contained in the air are condensed and separated by the compression of the air, and accumulate as a mixed drain of oil and water at the bottom of the air tank 2. When the drain reaches a certain amount, the drain enters the drain trap through the drain trap inlet 9a through the valve 8 which is always open, and is taken out from the drain trap outlet 9b. Since the supply of the drain is performed by the air pressure of the compressed air in the air tank 2, air enters the drain and is discharged from the outlet 9b of the drain trap. Especially the drain trap entrance 9
The drain decreases on the side a, and the compressed air is slightly discharged from the outlet 9b of the drain trap immediately before the drain trap 9 is closed. The drain and air discharged from the drain trap 9 receive the air pressure of the compressed air in the air tank 2 in a reduced pressure state through the drain trap 9 when the drain trap 9 is operated, and are sent out from the drain inlet 10 a of the oil-water separator 10 to the oil / water. It flows into the separation device 10.
The air entering the container 11 from the drain inlet pipe fitting 14 is decompressed. The oil and water in the drain that has entered the oil-water separator 10 descend by their own weight, the oil is adsorbed by the oil absorbing material 17, and the water first enters the gap between the oil absorbing materials 17 and accumulates at the bottom of the container 11. When the amount of water increases and the water level rises, the oil absorbing material 17 that has adsorbed the oil floats. Even in this state, the oil in the water floats up and is adsorbed by the oil absorbing material 17 in the stationary state. That is, a specific gravity difference oil / water separation action also occurs due to a long standing state. The air that has entered the oil-water separator 10 in a state separated from the drain is supplied from the pipe to the container 1.
Since the gas enters the large space 1, it is depressurized and alleviated by pressure fluctuation, and is released into the atmosphere at a slow speed from the pores 16 a of the exhaust port 16 by the back pressure applied from the drain trap 9 side. The air mixed into the water is
1 and is discharged in the atmosphere from the pores 16a of the exhaust port through the upper space gradually because it is stationary in the storage state.
Therefore, even if the drain and the air are suddenly sent by the operation of the drain trap 9, the oil-water separator 10 is a closed tank,
The air expands and decompresses in the tank, so that the drain does not splash onto the floor and contaminates unlike an open oil-water separator. Even if the drain enters vigorously from the drain inlet 10a, since the oil absorbing material 17 is floating, the oil absorbing material 17
Acts as a cushioning member, does not scatter the drain that has entered the container 11, and has a specific gravity of the oil absorbing material 17.
Since it is larger, it is stored below the oil absorbing material 17 so that there is no scattering of separated water.

When the absorption of the oil absorbing material 17 becomes saturated by use, a considerable amount of water is also stored in the container 11.

Then, the lid 13 is opened, the container 11 is transported, and only the water flows into the sewage. The oil absorbing material 17 is accumulated and passed to a treating company for incineration or disposal.

In the embodiment, the drain is connected to the oil-water separator by connecting the drain inlet and the drain trap provided in the air tank of the air compressor. However, the manner of introduction of the drain is not limited. Only the drain may be dropped by gravity, or a drain supplied by a pump may be introduced.

Although the buoyant oil-absorbing material of the embodiment is granular,
Other shapes can be taken as long as it is ascended.

[0023]

The present invention has a sealed container capable of storing a drain. In the container, a granular buoyant oil-absorbing material that floats by the drain flowing into the container while leaving a space above the container. It is movably mounted and accommodated, and the container has a floating oil absorbing material through the space.
Drain inlet and exhaust port for sending drain toward
In addition, since oil and water are separated due to the difference in specific gravity due to the accumulation of drain in the container and the oil and separated oil in the drain are adsorbed by the oil absorbing material, the oil absorbing material floats, so it is always in the oil-rich drain. At a position suitable for drain adsorption. That is, when the oil-absorbing material floats in the container, the accumulated drain always has an oil-water separation action due to the difference in specific gravity, and the oil-absorbing material acts on the upper layer oil-rich drain, so that the oil in the drain can be effectively taken into the oil-absorbing material. Since the oil absorbing material is floating, there is no drain and no water scattering when the drain flows.

[0024]

[0025]

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of FIG.

FIG. 2 is a perspective view of an embodiment of the oil-water separation device.

FIG. 3 is a side view of an application example of the present invention in an air compression device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air compressor 2 Air tank 3 Air compressor 4 Motor 5 Compressed air outlet 6 Belt device 7 Drain hole 8 Valve 9 Drain trap 9a Inlet 9b Outlet 10 Oil / water separator 10a Drain inlet 11 Container 11a Upper edge 12 Seal 13 Lid 14 drain inlet pipe joint 15 nut 16 exhaust port 16a pore 17 oil absorbing material

Claims (1)

(57) [Scope of request for utility model registration] 1. A closed container capable of storing a drain, in which a granular floating oil absorbing material floating by a drain flowing into the container while leaving a space in an upper portion is movably mounted and stored in the container. The container has a buoyant oil absorbing material
Oil / water separation characterized by having a drain inlet and an exhaust port for feeding the drain, and collecting the oil and water in the drain with an oil absorbing material while separating the oil and water by the specific gravity difference when the drain accumulates in the container. apparatus.