JPH0528401U - Oil water separation automatic drainage device - Google Patents

Abstract

(57) [Summary] This invention has 24 oil-cooled screw compressor devices.
The most important feature is that the drain inside the oil separator chamber can be drained efficiently and safely even during time driving. The means for removing water from the lower part of the oil separator chamber consists of an oil / water separation chamber, a drain pipe is connected to the lower part of the oil / water separation chamber, a normally closed solenoid valve is provided in the middle of the drain pipe, and an oil-cooled screw compressor Even during driving, the mixture of oil and water introduced into the oil-water separation chamber is characterized in that only the water in the oil-water mixture is drained by opening the normally closed solenoid valve in a timed manner. I am trying.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an oil / water separation automatic drainage device. More specifically, the present invention relates to an oil / water separation automatic drainage device capable of efficiently and safely removing the drain in the oil separator chamber even when the oil-cooled screw compressor is driven for 24 hours. Regarding the device.

[0002]

[Prior Art]

 As is well known, an oil-cooled screw compressor is used. That is, an oil-cooled screw compressor driven by an electric motor, an oil separator chamber, an oil cooler, and an oil filter are connected by a circulation pipe, and the air sucked by the oil-cooled screw compressor is compressed together with the oil. It is a device that separates compressed air and oil in the oil separator chamber and supplies compressed air to the destination.

On the other hand, since the water in the compressed air mixes with the oil, in order to remove the water, the drain is discharged from the lower part of the oil separator chamber that has conventionally constituted the oil-cooled screw compressor device. The device is considered.

By the way, conventionally, it has been considered that a drain drain valve is provided below the oil separator chamber. This is to drain the drain accumulated under the oil separator chamber while the oil-cooled screw compressor device is stopped by opening the drain valve.

[0005]

[Problems to be solved by the device]

 According to the above-mentioned prior art, when the oil-cooled screw compressor device is stopped and released, water in the oil in the oil separator chamber settles downward, and the drain is discharged by opening the drain valve. Is.

However, recently, as the number of unmanned factories increases, many factories continuously operate the oil-cooled screw compressor device for 24 hours, and the driving causes the oil in the oil separator chamber to be agitated, causing the drain to move downward. There was a problem that it was not possible to discharge the drain without accumulating. Even if the drain is discharged together with the oil, the oil is always used in an oil-cooled screw compressor, so it was extremely hot (about 80 degrees Celsius), which was very dangerous.

Therefore, the drain cannot be drained in a state where the oil-cooled screw compressor device is continuously operated for 24 hours, which accelerates the speed of oil deterioration and is likely to cause a device failure.

[0008]

【Purpose】

 Therefore, the object of the present invention is to discharge only the water in the oil even while the oil-cooled screw compressor device is operating, and to discharge it efficiently and safely. To provide the means by which it can.

[0009]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention has the following technical means. That is, the present invention will be described with reference to the reference numerals in the accompanying drawings corresponding to the embodiments. In the present invention, an oil-cooled screw compressor 4 driven by an electric motor 3, an oil separator chamber 6, and an oil cooler 9 are provided. And the oil filter 11 are connected by a circulation pipe, the air sucked by the oil-cooled screw compressor 4 is compressed together with the oil, and the compressed air is separated in the oil separator chamber 6 to obtain the compressed air. The means for removing water in the compressed air from the lower part of the oil separator chamber 6 while supplying water to the destination, the means for removing water from the lower part of the oil separator chamber 6 is It is composed of a separation chamber 18, a drain pipe 24 is connected to the lower part of the oil / water separation chamber 18, and a normally closed solenoid valve 22 is provided in the middle of the drain pipe 24 so that Even during the driving of the oil-cooled screw compressor 4 driven by the above, the mixture of oil and water introduced into the oil-water separation chamber 18 is converted to the above-mentioned oil by the timed opening of the normally closed solenoid valve 22. The oil / water separation automatic drainage device is characterized in that only the water in the water mixture is drained.

[0010]

[Action]

 Based on the above configuration, oil containing water is guided from the oil separator chamber 6 constituting the oil-cooled screw compressor device 2 to the oil / water separation chamber 18, where the water in the oil is accumulated below, and the oil separator chamber Water flows from the lower part of 6 to the drain pipe 24, and the normally closed electromagnetic valve 22 provided in the middle of the drain pipe 24 is opened and discharged in a timed manner. Since the normally closed solenoid valve 22 is opened in a timed manner, the water in the oil settles and collects in the oil / water separation chamber 18 during closing, and only the water is discharged when opened.

[0011]

【Example】

 Next, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a system diagram of the oil-cooled screw compressor device and the oil / water separation automatic drainage device of the first embodiment. The oil-cooled screw compressor device 2 includes an oil-cooled screw compressor 4, which is driven by an electric motor 3, an oil separator chamber 6, an oil cooler 9, and an oil filter 11, which are connected by a circulation pipe.

The oil / water separation automatic drainage device 17 includes an oil / water separation chamber 18, a drain pipe 24, a normally-closed electromagnetic valve 22, and a time limit timer 26, and the oil-cooled screw compressor device 2 is provided. The lower portion of the constituent oil separator chamber 6 and the oil / water separation chamber 18 are connected by a drain pipe 15, and a drain valve 16 is provided in the middle of the drain pipe 15.

Next, the operation of the oil / water separation automatic drainage device 17 during the operation of the oil cooling type screw compressor device 2 will be described. First, when the switch 1 of the oil-cooled screw compressor device 2 is turned on, the electric motor 3 moves and the oil-cooled screw compressor 4 is driven. Then, the oil in the device circulates, sucks air from the air suction port 13 of the oil-cooled screw compressor 4 to make compressed air, and flows into the oil separator chamber 6 through the pipe 5 together with the oil, and the oil separator filter The compressed air is supplied to the destination through the compressed air pipe 14 through the luther 7. The oil separated from the compressed air is circulated to the oil cooler 9 via the pipe 8, the oil filter 11 via the pipe 10 and the oil-cooled screw compressor 4 via the pipe 12 again.

Then, when the above process is repeated, the water contained in the compressed air is mixed in the oil. The oil mixed with water is made to flow from the lower portion of the oil separator chamber 6 into the oil / water separation chamber 18 of the oil / water separation automatic drainage device 17 through the drain pipe 15.

On the other hand, when the switch 23 of the oil / water separation automatic drainage device 17 is turned on, the switch 1 of the oil cooling type screw compressor device 2 is turned on to connect to the power source, and the time limit timer 26 is driven. The time limit timer 26 opens the normally closed solenoid valve 22 for an arbitrary set time, for example, 3 seconds to 8 seconds.

Therefore, in the oil / water separation chamber 18, the water in the oil settles downward and accumulates, flows out into the drain pipe 24, passes through the strainer 21, and flows into the normally closed solenoid valve 22. Here, the time limit timer 26 is driven as described above, the normally closed solenoid valve 22 is opened for 3 to 8 seconds, and only water is discharged.

Since the cylindrical partition 19 is provided downward from the upper part of the oil / water separation chamber 18 and the filter 20 is provided in the center thereof, the purified oil is returned to the oil return pipe 25. Is returned to the pipe 10 of the oil-cooled screw compressor device 2 via.

FIG. 2 is a system diagram of an oil-cooled screw compressor device and an oil / water separation automatic drainage device of the second embodiment, and only differences from the first embodiment will be described. The switch 23 of the oil / water separation / automatic drainage device 17 is directly connected to an external power source. The normally closed solenoid valve 22 is directly opened by turning on the switch 23 and is normally turned off by turning off the switch 24. The closing solenoid valve 22 is closed.

As described above, the oil / water separation automatic drainage device 17 is configured such that even if the oil-cooled screw compressor device 2 is continuously operated for 24 hours, oil mixed with water is driven into the oil separator chamber 6 during its operation. The oil is temporarily introduced from the lower portion into the oil / water separation tank 18 through the drain pipe 15, and then the water is allowed to settle and discharged. Therefore, instead of draining the oil and water from the oil separator chamber 6 in a state where the oil and water are agitated, the oil mixed with water is first introduced into the oil / water separation chamber 18 and separated there, and the water is temporarily switched by the switch 23. At the same time as being discharged, the purified oil is returned to the circulation pipe of the oil-cooled screw compressor device 2. Therefore, even when the oil-cooled screw compressor device 2 is being driven, the water mixed in the oil can be efficiently and safely discharged.

[0020]

[Effect of the device]

 As described in detail above, according to the invention of claim 1, oil mixed with water is temporarily introduced from the oil separator chamber of the driven oil-cooled screw compressor device to the oil-water separation tank and separated there. Therefore, the water settles downward without being stirred by driving, and the accumulated water is discharged in a timed manner, which is an advantage that draining can be done efficiently and safely even when the oil-cooled screw compressor device is being driven. Have.

Further, according to the invention of claim 2, since the drainage in the oil-water separation automatic drainage device can be performed in a timed manner with the driving of the oil-cooled screw compressor device, the device is more unmanned. It has the advantage of being easy.

In addition, according to the invention of claim 3, since the drainage can be performed by the switch operation, there is an advantage that the drainage can be freely performed according to the size and use condition of the oil-cooled screw compressor device and the oil condition. Have.

According to the invention of claim 4, since the oil purified from the oil / water separation chamber is returned to the oil-cooled screw compressor device, the life of the oil is extended and the life of the entire device is extended. Have.

[Brief description of drawings]

FIG. 1 is a system diagram of an oil-cooled screw compressor device and an oil / water separation automatic drainage device according to a first embodiment.

FIG. 2 is a system diagram of an oil-cooled screw compressor device and an oil / water separation automatic drainage device according to a second embodiment.

[Explanation of sign]

 2 Oil-cooled screw compressor device 3 Electric motor 4 Oil-cooled screw compressor 6 Oil separator chamber 15 Drain pipe 17 Oil / water separation automatic drainage device 18 Oil / water separation chamber 22 Normally closed solenoid valve 24 Drain pipe 25 Oil return pipe 26 Time limit timer

Claims (4)

[Scope of utility model registration request] 1. An oil-cooled screw compressor 4 driven by an electric motor 3, and an oil separator chamber 6
, The oil cooler 9 and the oil filter 11 are connected by a circulation pipe, the air sucked by the oil-cooled screw compressor 4 is compressed together with the oil, and the compressed air is separated in the oil separator chamber 6. Then, the compressed air is supplied to the destination of use and the water in the compressed air is removed from the lower part of the oil separator chamber 6 by means of the means.
The means for removing water from the lower portion of the oil / water separation chamber 18 comprises a drain pipe 24 connected to the lower portion of the oil / water separation chamber 18, and a normally-closed electromagnetic valve 22 is provided in the middle of the drain pipe 24.
Driven by oil-cooled screw compressor 4
Even during driving, the oil / water mixture introduced into the oil / water separation chamber 18 is drained only by removing the water in the oil / water mixture by opening the normally closed solenoid valve 22 in a timed manner. An oil / water separation automatic drainage device characterized in that 2. The normally closed solenoid valve 22 provided in the drainage pipe 24 is such that when the power switch 1 of the electric motor 3 of the oil-cooled screw compressor 4 is turned on, the drainage switch 23 is also turned on. 26 is driven, and is opened, and is closed after a time limit has elapsed.
Oil water separation automatic drainage device. 3. The normally closed electromagnetic valve 22 provided in the drainage pipe 24 is driven by an independently-powered power source, is opened by turning on the drainage switch 23, and turns off the drainage water switch 23. The oil / water separation automatic drainage device according to claim 1, wherein the automatic drainage device is closed. 4. A cylindrical partition wall 19 is provided from the upper part of the oil / water separation chamber 18 downwardly, and the cylindrical partition wall 19 is provided.
A filter 20 is provided at the center of the oil cooler 11 from the outside of the filter 20.
The oil / water separation automatic drainage device according to claim 1, which is introduced into the circulation pipe 10 between the oil filter 11 and the oil filter 11.