JP3038477B1 - Drain treatment method and drain treatment device - Google Patents

Abstract

Abstract: [PROBLEMS] Drain traps may malfunction due to foreign matter contained in drains.
Although a strainer was always formed in the drain trap,
It has the ability to remove large foreign matter, and has not been sufficiently considered for malfunctions caused by oil. In addition, maintenance such as cleaning for removing foreign matter accumulated in the strainer is also difficult. SOLUTION: In a drain treatment apparatus for separating fresh water from a drain containing at least one of oil and various foreign substances, devices 20, 21, 22, 2 for generating drain
3, 24 and first foreign matter separating devices 71, 72, 73, 7
4, 75 and drain traps 41, 42, 43, 44,
45 and the second foreign matter separating devices 30 and 35 were arranged in the order described.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drain processing method and a drain processing apparatus, and more particularly, to a drain for discharging drain generated in an aftercooler, an air tank, an air dryer, an air filter, etc. The present invention relates to a technique for arranging a trap in a proper positional relationship to operate smoothly.

[0002]

2. Description of the Related Art As a conventional technique relating to a drain treatment apparatus, as shown in FIG. 3, a drain processing apparatus is provided in the middle of a compressed air pipe 101 composed of a compressed air pipe 101y and a compressed air pipe 101z. The drain generated from the drain generator 20 such as an aftercooler, an air tank, an air dryer, an air filter, etc., is drained through a drain pipe 119 composed of a drain pipe 119y and a drain pipe 119z. Every hour of
Alternatively, when a certain amount of drain is collected, the drain pipe 119
Is sent to the oil / water separator 35 via a drain trap 49 provided in the middle of the process.

At this time, since various kinds of foreign matter are contained in the drain passing through the drain trap 49, the drain trap 49 is used to remove foreign matter so that the drain trap 49 can be operated even a little smoothly. A strainer was always formed.

[0004] On the other hand, in the oil / water separator 35, although a structure for understanding the treatment method is not specifically shown, oil or foreign matter having a specific gravity lower than that of water is floated on the water surface, or a specific gravity higher than water is provided on the bottom surface. Sinking foreign substances, filtering foreign substances with paper, cloth or wire mesh, adsorbing oil or foreign substances with an absorbent such as cloth, separating oil or foreign substances from clean water by centrifugal force, or removing oil or foreign substances with chemicals. There are various methods such as separation of fresh water, separation of oil and foreign matter from fresh water by electrolysis, separation of oil and foreign matter and fresh water by ion exchange, etc. These methods are used alone or in combination. And could be used. However, consideration was also given to a configuration capable of removing both oil and various foreign substances.

[0005] Finally, the fresh water separated by the oil-water separator 35 can be directly discharged to a river or the like via the fresh water pipe 136.

[0006]

However, such a conventional drain treatment apparatus has the following problems.

First, there is a problem that a foreign matter contained in the drain causes a malfunction of the drain trap. Secondly, a strainer was always formed in the drain trap for that purpose.However, it was only capable of removing large foreign matter, and malfunctions due to oil were not sufficiently considered. Maintenance, such as cleaning, to remove foreign matter accumulated in the pit was also difficult.
An object of the present invention is to solve such a problem.

[0008]

SUMMARY OF THE INVENTION The present invention relates to a drain processing method for separating fresh water from a drain containing at least one of oil and various foreign substances, and a device for generating drains 20, 21, 22, 23. , 24 is characterized by removing oil and various foreign matters both before and after the position to open the flow path for discharging drain generated as fresh water from a closed state by any information from a closed state, Further, the drain is discharged together with air, and the information for opening the flow path is output at regular intervals or when a constant amount of drain is collected. A device for generating drain
The above problem was solved by preventing backflow immediately before the pipes from 0, 21, 22, 23, and 24 merge.

The present invention also relates to a drain processing apparatus for separating fresh water from a drain containing at least one of oil and various foreign substances.
1, 22, 23, 24 and first foreign matter separating devices 71, 7
2, 73, 74, 75 and drain traps 41, 42,
43, 44, 45 and the second foreign matter separating devices 30, 35 are arranged in the order described, and furthermore, the pipes from the drain generating devices 21, 22, 23, 24 are joined. Just before the check valves 61, 62, 63,
64, and immediately after the merging, the second foreign matter separating device 3
0, and the drain traps 41, 42, 43, 44, 45 are not provided with a strainer function.
The above problem has been solved.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A drain processing apparatus according to the present invention will be described in detail with reference to the drawings and embodiments. Here, FIG. 1 is a diagram showing a first embodiment of a drain processing device according to the present invention, and FIG. 2 is a diagram showing a second embodiment of a drain processing device according to the present invention.

(First Embodiment) In FIG. 1, reference numeral 20 denotes a device for generating a drain such as an aftercooler, an air tank, an air dryer, an air filter, etc., and includes a compressed air pipe 101y and a compressed air pipe 101z. It is arranged in the middle of the configured compressed air pipe 101.

At this time, the drain generated by the drain generating device 20 is supplied to the drain pipe 115a and the drain pipe 115.
drain pipe 11 composed of b and drain pipe 115c
It is sent to the second foreign matter separating device 35 via the first foreign matter separating device 75 and the drain trap 45 arranged in the middle of the step 5.

In this case, the first foreign matter separating device 75 and the second foreign matter separating device 35 do not specifically illustrate the structure for understanding the processing method, but float oil or foreign matter having a specific gravity lighter than water on the water surface. , Submerge foreign matter with a higher specific gravity than water on the bottom surface, filter foreign matter with paper, cloth or wire mesh, adsorb oil or foreign matter with an absorbent such as cloth, and separate oil and foreign matter from fresh water by centrifugal force. To separate oil and foreign matter from fresh water by chemicals, to separate oil and foreign matter from fresh water by electrolysis, and to separate oil and foreign matter from fresh water by ion exchange.
There are a variety of methods, such as those described above, and these methods can be used alone or in combination.
However, it is necessary to have a configuration capable of removing both oil and various foreign substances. Further, the first foreign matter separating device 75 is inevitably less capable of removing oil and various foreign materials than the second foreign matter separating device 35, but requires a pressure resistance to compressed air.

On the other hand, the drain trap 45 is opened at regular intervals or when the drain has accumulated in the drain trap 45 or a certain amount upstream of the drain trap 45, and the drain remaining upstream is discharged through the drain pipe 115c. Two foreign matter separation device 3
Send to 5. That is, the drain trap 45 has a function of closing or opening the middle of the drain pipe 115. In this case, as the type of the drain trap 45,
Among the float type, the disk type, the electric type, and the electric type, various types such as an electromagnetic type, a motor type, and the like can be considered.

Among them, the drain trap 45 operates depending on the height of the drain in the drain trap 45 as in a disk type, and although not specifically shown, the upstream of the drain trap 45 as in an electromagnetic type. The drain storage tank is disposed upstream of the drain trap 45 to detect whether or not the drain reaches a predetermined height of the drain storage tank, based on the information confirming that a certain amount of drain has been stored. It is also conceivable that the drain sensor is arranged so that the drain trap 45 is activated by the information from the drain sensor. In addition, it is conceivable to provide a drain detection sensor for detecting drain in the drain generation device 20. Further, when the drain trap 45 is operated, it is conceivable that air is discharged together with the drain.

Here, the fresh water separated by the second foreign matter separating device 35 can be drained to a river or the like as it is.

The drain processing apparatus according to the present invention is configured as described above, and its operation will be described below.

First, compressed air generated by a compressor (not shown) generates drains such as an aftercooler, an air tank, an air dryer, an air filter, and the like provided in the middle of the compressed air piping 101. Equipment 2
Drain is generated when passing through zero.

Then, the drain generated by the drain generating device 20 is removed through a drain pipe 115 by a first foreign matter separating device 75 capable of withstanding the pressure of the compressed air to remove oil and various foreign matters. . In this case, the drain from which the oil and various foreign matters have been removed stays upstream of the drain trap 45, and the drain trap 45 operates to discharge the drain at regular intervals or when a constant amount of the drain has accumulated. In particular, since the drain from which oil and various foreign substances have been removed comes to the drain trap 45, malfunction does not occur even if the drain trap 45 is not provided with a strainer for removing foreign substances. Further, since the first foreign matter separating device 75 also removes oil, the drain trap 45
There is almost no malfunction.

Next, the drain discharged from the drain trap 45 is sent to the second foreign matter separating device 35, and further,
Oil and various foreign substances are completely removed and separated into clearer clear water. Therefore, the fresh water separated by the second foreign matter separation device 35 can be drained to a river or the like without any need for any subsequent processing.

(Second Embodiment) In FIG. 2, reference numeral 10 denotes an air compressor, which sucks air from a suction port 11. This air compressor 10
Produces compressed air and cools the compressed air, and an air tank 2 that stores compressed air.
2 and an air dryer 23 for drying the compressed air
And an air filter 24 for removing foreign matter in the compressed air
Although not specifically shown, the compressed air is finally used by various pneumatic devices such as an air motor and an air cylinder.

On the other hand, devices 21 and 22 for generating drain
23, 24 aftercooler 21, air tank 22, air dryer 23, air filter 24
Connect drain pipes 111, 112, 113 and 114, respectively. In this case, the drain pipe 111 includes a drain pipe 111a, a drain pipe 111b, and a drain pipe 111.
c, a drain pipe 111d, and a drain pipe 111e, and the drain pipe 112 is a drain pipe 112a, a drain pipe 112b, a drain pipe 112c, and a drain pipe 112.
d and a drain pipe 112e.
3 is a drain pipe 113a, a drain pipe 113b, a drain pipe 113c, a drain pipe 113d, and a drain pipe 113
e, and the drain pipe 114 is
a, a drain pipe 114b, a drain pipe 114c, a drain pipe 114d, and a drain pipe 114e.

Further, drain pipes 111, 112, 11
Valves 51, 52, 53, and 54 are provided in the middle of 3, 114, and drain pipes 111b, 112b, 113b, and 114 are provided.
b, the first foreign matter separating devices 71, 72, 73, 74
Connected to In this case, the first foreign matter separating device 71,
As a method of separating oil and foreign matter of 72, 73, 74,
Although not specifically shown, various methods as described in the first embodiment can be considered. However, as for the setting conditions of the first foreign matter separation devices 71, 72, 73, 74, the contents shown in the first embodiment are directly applicable, but it is particularly important to have a pressure resistance against compressed air. is there.

Next, the first foreign matter separating devices 71, 72, 7
The drain from which the oil and foreign matters have been separated in 3 and 74 stays in the drain pipes 111c, 112c, 113c and 114c.
Here, the drain pipes 111c, 112c, 113c,
The drain trapped in the drain traps 114, 42, 43, and 44 is activated by the drain traps 114, 42, 43, and 44 at predetermined intervals or when the drains are accumulated in the drain traps 41, 42, 43, and 44, respectively, or by a predetermined amount. To drain.
In particular, the drain trap 41, 42, 43, 44 receives a drain from which oil or foreign matter is separated.
Even if the strainers 1, 42, 43 and 44 are not provided with a strainer, no malfunction occurs.

Further, drain traps 41, 42, 43,
The drain discharged from the drain 44 is connected to the drain pipes 111d and 1d.
Drain pipe 1 via 12d, 113d, 114d
It is configured to collect in the drain collecting pipe 120 via check valves 61, 62, 63, and 64 arranged in the middle of 11, 112, 113, and 114.

In this way, the drain collected in the drain collecting pipe 120 is sent to the second foreign matter separating device 30, and is further separated into fresh water by removing oil and various foreign matters, and passed through the fresh water pipe 130. And discharged into rivers. In this case, as a method of separating oil and foreign matter of the second foreign matter separating device 30, various methods as shown in the first embodiment are conceivable, although not specifically illustrated.

The drain processing apparatus according to the present invention is configured as described above, and its operation will be described below.

First, air is sucked through the suction port 11 and compressed air is produced by the air compressor 10. Then, the produced compressed air is stored in the air tank 22 via the compressed air piping 102a, the after cooler 21, and the compressed air piping 102b.

On the other hand, the compressed air stored in the air tank 22 is supplied to the air motor or the air via the compressed air pipe 102c, the air dryer 23, the compressed air pipe 102d, the air filter 24, and the compressed air pipe 102e as required. It is sent to various pneumatic devices such as cylinders to assist the operation.

At this time, the drain generating devices 21 and 2
2, 23, 24 aftercooler 21, air tank 22, air dryer 23, and air filter 2
The drain generated in 4 is drain pipes 111, 112, 1
Valves 51, 52, 53, 5 arranged in the middle of 13, 114
4, first foreign matter separating devices 71, 72, 73, respectively.
It is sent to 74.

Here, the drain from which the oil and various foreign matters have been separated by the first foreign matter separating devices 71, 72, 73 and 74 which can withstand the pressure of the compressed air is drained by the drain trap 41,
Drain pipes 111c, 112 upstream of 42, 43, 44
c, 113c, and 114c. In such a state, the drain trap 4
When a certain amount is collected at 1, 42, 43, 44 or upstream thereof, the drain traps 41, 42, 43, 44 are individually activated to discharge the drain. In this manner, the discharged drain is sent to the second foreign matter separating device 30 via the check valves 61, 62, 63, 64 and the drain collecting pipe 120, whereby oil and various foreign matters are removed. It is discharged as fresh water.

As a modification of the second embodiment, although not specifically shown, the devices 21 and 2 for generating drainage are provided.
2, 23, 24, valves 51, 52, 53, 54, check valves 61, 62, 63, 64, a first foreign matter separator, a drain trap, and a second foreign matter separator 30 It is also conceivable to provide a configuration in which

When the first embodiment is compared with the second embodiment, the check valve 6 shown in the second embodiment will be described.
Apart from merging with the drain collecting pipe 120 via 1, 62, 63, 64, all the contents of the first embodiment are applicable to the second embodiment.

[0034]

As is clear from the above description, the following effects can be obtained by the present invention.

First, in the present invention, since the drain reaching the drain trap is separated into fresh water,
Drain trap no longer malfunctions due to foreign matter. Second, since the drain reaching the drain trap is separated into fresh water, it is no longer necessary to form a strainer in the drain trap.

[Brief description of the drawings]

FIG. 1 is a diagram showing a first embodiment of a drain treatment apparatus according to the present invention.

FIG. 2 is a view showing a second embodiment of the drain treatment apparatus according to the present invention;

FIG. 3 is a diagram showing a conventional drain treatment apparatus.

[Explanation of symbols]

10 Air compressor 11 Air suction tank 20 Drain generating device 21 After cooler (Drain generating device) 22 Air tank (Drain generating device) 23 ... Air dryer (Drain generating device) 24 ... Air filter (Drain generating device) 30 ... Second foreign matter separation device 35 ····· Second foreign matter separation device (oil / water separation device) 41 ···· Drain trap 42 ···· Drain trap 43 ····· Drain trap 44 ····· Drain trap 45 ··· Drain trap 49 Drain trap 51 Valve 52 Valve 53 Valve 54 Valve 61 Check valve 62 .... Backflow prevention 63... Check valve 64... Check valve 71... First foreign matter separating device 72... First foreign matter separating device 73. Apparatus 74... First foreign matter separating apparatus 75... First foreign matter separating apparatus 101... Compressed air pipe 101y ... Compressed air pipe 101z ... Compressed air pipe 102. Compressed air pipe 102a Compressed air pipe 102b Compressed air pipe 102c Compressed air pipe 102d Compressed air pipe 102e Compressed air pipe 111 Drain pipe 111a Drain Pipe 111b Drain pipe 111c Drain pipe 111d Drain pipe 111e Drain pipe 112 Drain pipe 112a Drain pipe 112b Drain pipe 12c: drain pipe 112d: drain pipe 112e: drain pipe 113: drain pipe 113a: drain pipe 113b ... drain pipe 113c: drain pipe 113d: drain pipe 113e ... Drain piping 114 ... Drain piping 114a ... Drain piping 114b ... Drain piping 114c ... Drain piping 114d ... Drain piping 114e ... Drain piping 115 ... Drain piping 115a ... Drain piping 115b ... Drain piping 115c ... Drain piping 119 ... Drain piping 119y ... Drain piping 119z ... Drain piping 120 ... Drain collecting pipe 130 ... Shimizu Pipe 135 ··· Shimizu pipe 136 ··· Shimizu pipe

Claims (7)

(57) [Claims] In a drain treatment method for separating fresh water from a drain containing at least one of oil and various foreign matters, a device for generating drain (20, 21, 22, 2) is provided.
3, 24) Removal of oil and various foreign matter both before and after the position where the flow path for discharging the drain generated from the closed water as fresh water is opened from a closed state by some information. Drain treatment method. 2. The drain treatment method according to claim 1, wherein the drain is discharged together with air. 3. The information according to claim 1, wherein the information for opening the flow path is issued at regular intervals or when a constant amount of drain is collected. Drain treatment method. 4. A device for generating drain (20, 21, 2)
The drain treatment method according to any one of claims 1 to 3, wherein backflow is prevented immediately before the pipes from (2, 23, 24) merge. 5. A drain processing apparatus for separating fresh water from a drain containing at least one of oil and various kinds of foreign matters, wherein the drain generating apparatus includes a drain generating device (20, 21, 22, 2).
3, 24) and a first foreign matter separation device (71, 72, 73,
74, 75) and drain traps (41, 42, 43,
44, 45) and a second foreign matter separation device (30, 35) arranged in the stated order. 6. The drain generating device (21, 2).
The check valves (61, 62, 63, 64) are respectively provided immediately before the respective pipes from the pipes 2, 23 and 24) merge, and the second foreign matter separation device (30) is provided immediately after the pipes merge. The drain treatment device according to claim 5, wherein: 7. The drain trap (41, 42, 4)
The drain treatment apparatus according to claim 5 or 6, wherein a strainer function is not added to (3, 44, 45).