JPS6339799B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drain oil/water separator in an air compressor, and more specifically, the present invention relates to a drain oil/water separator in an air compressor. This invention relates to improvements in equipment for separating oil from oil.

As is well known, oil may be contained in the drain discharged from the above dehumidifier.

Discharging this oil-containing drain directly into a sewage system causes environmental pollution, so oil-water separators have been conventionally used.

Conventional air compressor drain oil/water separators temporarily store the drain that is intermittently discharged from the various dehumidifiers mentioned above in a storage tank, etc., and then transfer it to an oil treatment tank, etc., where oil and water are separated using a power pump. The drain was sent and the oil was separated and removed using various separation methods. For this reason, ancillary equipment such as a power pump and electrical wiring is required, and since the dehumidifier and treatment device are not connected in series, the treatment of oil in the drain can be done flexibly in response to drain discharge from the dehumidifier. There may be cases where this is not possible.

The present invention has been made in view of these points, and its gist is that the inside of the tank is divided by a partition plate into an oil flotation separation chamber and a water storage tank chamber, and that the oil flotation separation chamber and water storage tank chamber are separated by a partition plate. A closed oil treatment tank in which the upper part of the storage tank chamber is formed as a compressed air chamber, an oil adsorption tank connected to the water storage tank of this oil treatment tank via a pipe, and an oil adsorption tank connected to this oil adsorption tank. The system is equipped with a clear water discharge pipe, and connects all or part of the drain piping of the air compressor's air tank, aftercooler, drain separator, dryer, etc. to the oil flotation separation chamber of the closed oil treatment tank. An air conditioner characterized in that drain containing oil from a dehumidifier is sent directly to an oil treatment tank and an oil adsorption tank by the pressure of compressed air discharged together with the drain to separate and remove oil in the drain. This is a drain oil/water separator in Pretusa, and its purpose is to remove oil discharged from the dehumidifier by using the energy of the entrained compressed air discharged together with the drain separated from the dehumidifier. To provide a drain oil/water separator which can send the containing drain directly to the oil/water separator using compressed air pressure, effectively remove oil in the drain without requiring any power such as a power pump, and obtain good clear water. Another object of the present invention is to provide a drain oil/water separation device that can elastically process drain at a uniform speed in accordance with the timing of drain discharge from a dehumidifying device.

Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an electric motor, 2 is an air compressor, and 3 is an air tank; intake air is compressed by the air compressor 2 driven by the electric motor and stored in the air tank 3; is tube 4
The air is led to various compressed air-using equipment (not shown) via the .

In this case, in order to reduce the humidity of the air and eliminate the adverse effects on the equipment using compressed air, various dehumidifiers are usually arranged in the communication pipes between the air tank and the equipment using compressed air. In the illustrated example, an aftercooler 5, a drain separator 6, and a dryer 7 are arranged in the pipe 4.

Drainage is discharged from these air tank 3, aftercooler 5, drain separator 6, dryer 7, etc., but when air is compressed, lubricating oil from the air compressor 2 is mixed into this drain. It shows turbid water.

The present invention separates this oily drain into oil and water by utilizing the energy of the entrained compressed air to obtain clear water. That is, 8 is a closed type oil treatment tank, and the inside is divided into an oil flotation separation chamber 10 and a water storage tank chamber 11 by a partition plate 9.
1 is formed as a compressed air chamber 12. The oil flotation separation chamber 10 and the water storage chamber 11 communicate with each other through a port 13 at the bottom, and the compressed air chamber 12 also communicates with one side of the partition plate 9 through an upper port 14. And in the oil flotation separation chamber 10,
A floating oil discharge pipe 16 having a floating oil discharge valve 15 is connected to a certain height from the bottom, and the compressed air pressure in the compressed air chamber 12 is set to a predetermined required setting. A compressed air discharge pipe 18 having a safety valve 17 for discharging to the atmosphere when the pressure exceeds the pressure is connected.

Furthermore, inside the water storage tank chamber 11, there is a pipe 20 that connects the water storage tank chamber 11 and the next stage oil adsorption tank 19.
The open end 21 of the pipe 20 facing into the water storage tank chamber 11 is located approximately in the middle of the tank, and the separated water flows out from this open end 21. The height determines the liquid level in the water storage tank chamber 11, and the level above the open end 21 is the compressed air chamber 12.
It is formed as follows.

Next, the oil adsorption tank 19 is similarly formed in a sealed structure, and an oil adsorption material 22 made of multiple layers of adsorption material containing an oil adsorption agent is disposed inside the oil adsorption tank 19.
The above-mentioned pipe 20 is connected to the bottom of 2, and the clear water discharge pipe 2 is connected above the oil adsorption tank 19.
3 is connected.

Now, the feature of the present invention is that the drain pipes of the air tank 3, aftercooler 5, drain separator 6, and dryer 7 of the air compressor are connected directly to the oil flotation separation chamber of the oil treatment tank 8 in a sealed manner. 10, and by the energy of the entrained compressed air discharged together with the condensate separated from the dehumidifier, the drain of oily water is sent to the oil treatment tank 8, and from there to the oil adsorption tank 19, and the oil is It is designed to separate into water and water.

That is, 24, 25, 26, 27 indicate the drain piping of the air tank 3, aftercooler 5, drain separator 6, and dryer 7, respectively, and each of them has a drain trap or manual valve 28, 29, 30, which can discharge the drain together with compressed air. 31 is arranged, and the above-mentioned inner drain pipes 24, 25, 26, 2
7 are assembled into one by pipes 32 and 33, and the pipe 33 is connected to the bottom of the oil flotation separation chamber 10 of the oil treatment tank 8. In this case, depending on the conditions, each of the drain pipes of the dehumidifying device may be connected to the oil flotation separation chamber 10 of the oil treatment tank 8.

Next, the oil/water separation operation will be explained based on the above configuration.

Drain generated from dehumidifying devices such as the air tank 3, aftercooler 5, drain separator 6, and dryer 7 is drained through drain laps or manual valves 28, 29,
30, 31 intermittently drain the drain pipes 24, 2.
5, 26, 27 together with the compressed air, and the discharged drain and compressed air are passed through the pipe 3.
2 and 33, the liquid is first sent to the oil flotation separation chamber 10 of the oil treatment tank 8. When the drained oily water is sent to the oil flotation separation chamber 10, water W is separated in the lower part and oil F is separated in the upper part due to the difference in specific gravity. It also flows into 11. Further, the entrained compressed air A is guided to the compressed air chamber 12. Since the compressed air 12 is provided with a safety valve 17, pressure exceeding the set pressure is released by actuation of the valve, and the compressed air chamber is maintained at a predetermined pressure. And here, the liquid level height of water W is
0, the compressed air A maintained at a predetermined pressure by the safety valve is released to the atmosphere through the pipe 20.
Then, when the water W gradually accumulates in the water storage chamber 11 and exceeds the height of the pipe end 21, the compressed air is trapped in the compressed air chamber 12, and the water W is drawn from the pipe end 21 by the pressure of the compressed air. The oil adsorbent 2 in the oil adsorption tank 19 is pushed out into the pipe 20 and due to the pressure
2, the oil particles mixed into the water in the process are adsorbed by the oil adsorbent 22, and the clear water from which the oil particles have been removed is discharged to the external water discharge system via the pipe 23. be. Then, the amount of drain discharged from the pipe end 21 by compressed air pressure becomes larger than the amount of drain flowing into the oily water from the pipe 33, and the amount of water in the water storage tank chamber 11 gradually decreases. , if it becomes below the tube end 21, at that point the tube end 2
The discharge of condensate from 1 is stopped, and the compressed air chamber 12
The compressed air inside is released to the atmosphere, and these operations are repeated every time the drain is discharged. On the other hand, the oil floated and separated to the upper part of the oil flotation separation chamber 10 in the oil treatment tank 8 is discharged to the outside from the floated oil discharge pipe 16 by operating the floated oil discharge valve 15. In this way, the drain of oily water discharged from the dehumidifier is
The pressure of the compressed air discharged with the drain is sent to the oil treatment tank and oil adsorption tank, and in the process oil is separated and removed by adsorption, making it possible to turn the drain into clear water without using a power pump, etc. be. Furthermore, since the drain piping of the dehumidifier is directly connected to the oil treatment tank and oil adsorption tank, water treatment can be performed in conjunction with drain discharge.

As detailed above, in this invention, the inside of the tank is divided by a partition plate into an oil flotation separation chamber and a water storage tank chamber, and the upper part of the oil flotation separation chamber and water storage tank chamber is formed into a compressed air chamber. The air tank of the air compressor is equipped with a closed oil treatment tank, an oil adsorption tank connected to the water storage tank of the oil treatment tank via a pipe, and a clear water discharge pipe connected to the oil adsorption tank. , aftercooler, drain separator, dryer, etc., all or part of the drain piping of the dehumidifier is directly connected to the oil flotation separation chamber of the closed oil treatment tank, and the drain containing oil from the dehumidifier is discharged together with the drain. This is a drain oil/water separation device for an air compressor, which is characterized by sending the compressed air directly to an oil treatment tank and an oil adsorption tank to separate and remove the oil in the drain, so it is a dehumidifying device. The drain of oily water that is separated from the drain can be sent directly to the oil treatment tank or oil adsorption tank by the compressed air pressure discharged together with the drain, so the oil in the drain can be effectively removed without requiring any power such as a power pump. can be removed to obtain good clear water. In addition, the oil and water separation process can be performed elastically and at a uniform speed in accordance with the timing of drain discharge from the dehumidifying device, thereby providing various effects such as improving work efficiency.

[Brief explanation of the drawing]

The attached drawing is a system diagram showing an embodiment of the present invention, in which 3 is an air tank, 4 is a pipe, 5 is an aftercooler, 6 is a drain separator, 7 is a dryer, 8 is an oil treatment tank, 9 is a partition plate, 10 is an oil flotation separation chamber, 11 is a water storage tank chamber, 12 is a compressed air chamber, 15
is a floating oil discharge valve, 16 is a floating oil discharge pipe, 17 is a safety valve, 18 is a compressed air discharge pipe, 19 is an oil adsorption tank,
20 is a pipe, 21 is a pipe end, 22 is an oil adsorbent, 23 is a clear water discharge pipe, 24, 25, 26, 27 is a drain discharge pipe, 28, 29, 30, 31 is a drain trap that can be discharged together with compressed air or manually valve, 32,
33 is a pipe, W is water, F is oil, and A is compressed air.

Claims (1)

[Claims] 1. A closed oil treatment tank in which the inside of the tank is divided into an oil flotation separation chamber and a water storage tank chamber by a partition plate, and the upper part of the oil flotation separation chamber and water storage tank chamber is formed into a compressed air chamber; It is equipped with an oil adsorption tank connected to the water storage chamber of the oil treatment tank via a pipe, and a clear water discharge pipe connected to this oil adsorption tank, as well as an air compressor's air tank, aftercooler, drain separator, and dryer. All or part of the drain piping of the dehumidifier, such as the A drain oil/water separator for an air compressor, characterized in that the oil in the drain is sent directly to an oil treatment tank and an oil adsorption tank to separate and remove oil in the drain.