JP3649789B2 - Centrifugal oil purifier - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a centrifugal oil cleaner that separates oil to be treated such as fuel oil and lubricating oil contained in a rotating container into oil and other substances such as sludge and water.
[0002]
[Prior art]
As a conventional centrifugal oil cleaner, for example, the oil to be treated is supplied into the lower drum of the centrifugal drum, the oil and the sludge are separated by centrifugal force, and the cleaning oil is taken out from the upper drum. It is disclosed (refer to Japanese Patent Laid-Open No. 5-192610).
[0003]
In such a centrifugal oil purifier, the upper rotating body of the centrifugal drum is disassembled and sludge is discharged at an appropriate time. However, when the centrifugal drum is stopped, oil that has been treated or has fallen and remains in the interior of the centrifugal drum.Therefore, when the sludge is discharged or the drum is cleaned, this residual oil must be pumped and discharged. It took extra time to work. On the other hand, if the residual oil is not discharged, when the centrifugal drum is rotated after sludge is discharged, the residual oil becomes an additional load during rotation in addition to the centrifugal drum's own weight. There was a problem that current flowed. In particular, when the treated oil is C heavy oil of the fuel oil, when the centrifugal drum is stopped, the C heavy oil is reduced in temperature due to heat radiation and solidified, and the removal becomes more difficult. Moreover, when this was not taken out, there was a problem that the overcurrent was further increased.
[0004]
On the other hand, so-called soft sludge that does not solidify in the oil to be treated and, in addition, fuel oil often contains a considerable amount of moisture. In such a case, there is a problem that soft sludge and moisture accumulate during operation, reach the boundary line of the clean oil, and are sent out together with the clean oil.
[0005]
[Problems to be solved by the invention]
This invention solves the said problem in a prior art, and makes it a subject to provide the centrifugal oil cleaner which a residual oil is discharged | emitted automatically at the time of a rotation stop of a container.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a centrifugal oil cleaner for separating oil to be treated, which is put in a rotating container, into oil and other substances.
An opening electrically connected to the bottom and out the central inner portion provided on the container of said container, said other one end side and one end and the other side becomes conductive internally conducts towards the inside of the opening When the container is rotated when the end side is connected to a position farther from the center of the container than the position of the opening in the lower part of the container, the container is rotated and a centrifugal force acts from the opening side to the other end side inside the container. And an oil passage member formed in such a manner .
[0007]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows an example of the entire structure of a centrifugal oil cleaner according to the present invention, and FIG. 2 is an enlarged view of a part thereof.
The oil purifier separates the oil to be treated, which is put in the centrifugal drum 1 as a rotating container, into oil and sludge as a substance or a small amount of water. The bottom 1-1a of the centrifugal drum 1 is provided with an opening 1-1b that conducts inward and outward. Inside the centrifugal drum 1, one end side 2-1 is conducted to the opening 1-1b and the other end side 2 is open. -2a and 2-2b are provided in the lower part of the centrifugal drum 1, and a T piece 2 is provided as an oil passing member that conducts to a position farther from the center 1a of the centrifugal drum 1 than the position of the opening 1-1b. As shown in FIG. 2, the other end sides 2-2a and 2-2b of the T piece 2 are desirably located closer to the center 1a than the inner boundary line L of oil formed during use.
[0008]
The oil purifier generally includes a casing 3, a mounting base 4 that supports the casing 3 from the mounting surface 100 via the anti-vibration rubber 101, a cover 5 that is detachably mounted on the casing 3, and is screwed into this. An oil supply pipe 6 fixed by the oil supply pipe, an oil supply pipe 7 attached to the pipe 6 and connected to an external pipe (not shown), an oil feed pump 8 which is disposed in the centrifugal drum 1 and feeds processed oil, and is coupled to the same and also shown in the figure. An oil feed pipe 9 connected to an external pipe, a motor 10 having a motor shaft 10a projecting upward, a mounting flange 11 thereof, a motor mounting plate 12 interposed between the casing 3 and the mounting base 4, and A bearing housing 13 bolted together with the flange 11, an intermediate shaft 15 coupled to the motor shaft 10a via a coupling 14, and a shaft for rotatably supporting the shaft It is equipped with a 16, 17 or the like.
[0009]
The centrifugal drum 1 is formed of a lower drum 1-1 in which an inner cylinder 1-3 is placed and an upper drum 1-2 that is releasably coupled thereto. A disc 19 having an oil passage hole 19a is provided at the boundary between the upper and lower drums. The lower cover 1-2a of the upper drum 1-2 is in contact with the front end portion of the disk 19, and the conduction of oil in the upper and lower drums is interrupted. The upper cover 1-2b of the upper drum 1-2 protrudes to an appropriate position and covers the upper part of the oil feed pump 8. The overflow oil scattered beyond the upper cover falls into the casing 3 and is guided to the outside through a drain hole (not shown).
[0010]
The oil feed pump 8 is provided with a nozzle 8a having an opening at the tip so as to face the flow of oil swirling in the upper drum 1-2 by the rotation of the centrifugal drum 1, and has entered by dynamic pressure acting on the opening. This is a pump that pumps oil. The lower drum 1-1 is attached to the upper end coupling portion 15 a of the intermediate shaft 15 by a bolt 20 and is rotated by the rotation of the intermediate shaft 15.
[0011]
As shown in detail in FIG. 2, the T piece 2 is attached to the lower drum 1-1 by screwing the other end 2-1 into the opening 1-1b of the lower drum 1-1. However, these may be coupled by bolts or screws. In the present embodiment, the opening 1-1b of the lower drum is provided in the center 1a portion of the centrifugal drum 1, and the casing 3 which is the outside through an oil passage 15b drilled in the coupling portion 15a of the intermediate shaft 15 is provided. The part surrounded by is connected. However, the opening 1-1b is not necessarily located at the center position. Further, depending on the shape of the coupling portion 15a and the like, the oil may be directly discharged to the outside without providing an oil passage therein.
[0012]
The oil purifier as described above is used as follows.
When cleaning the oil, the motor 10 is driven while the oil to be treated is dropped and supplied from the oil supply pipe 7 to the lower drum 1-1 through the oil supply inner pipe 6, and the motor shaft 10a, the coupling 14, The centrifugal drum 1 is rotated via the intermediate shaft 15. As a result, when there is moisture in the sludge S and the oil to be treated, the water W and the oil O are separated by a boundary line indicated by a two-dot chain line in the figure depending on the specific gravity difference, the amount, and the position of the oil passage hole 19a of the disk 19. Separately deposited as partitioned. The oil O moves upward from below while separating sludge and moisture therein, and becomes clean oil O ′ and enters the upper drum 1-2 through the oil passage hole 19a. The clean oil O ′ is sent out by the oil feed pump 8 via the oil feed pipe 9.
[0013]
Thus, when the centrifugal drum 1 is rotating, even if the oil that has dropped from the oil supply inner pipe 6 reaches the other ends 2-2a and 2-2b of the T piece 2, these are at the center 1a of the centrifugal drum 1. Since the position is farther from the center 1a than the opening 1-1b at the position, the oil does not enter the inside of the T-piece by the action of centrifugal force.
[0014]
When processing soft sludge that does not solidify with fuel oil or oil containing a lot of moisture, the motor 10 is stopped at an appropriate interval to stop the rotation of the centrifugal drum 1 even if the time for discharging the sludge has not been reached. . Thereby, oil, moisture, etc. other than the sludge separated and solidified around the lower drum 1-1 fall into the lower drum 1-1, and from the other end sides 2-2a, 2-2b of the T piece 2 It falls into the casing 3 via the opening 1-1b and the oil passage 15b, and is discharged and collected from a drain not shown. As a result, mixing of soft sludge and water into the clean oil is prevented without any operation other than starting and stopping the motor.
[0015]
For example, when discharging sludge every 500 to 600 hours, the motor 10 is stopped in the same manner as described above to stop the rotation of the centrifugal drum 1. As a result, residual oil, moisture, etc. are automatically discharged and collected as described above. Then, the upper drum 1-2 is disassembled and the sludge is scraped out. At this time, since it is not necessary to pump out residual oil or the like, the sludge discharge operation becomes easy and labor saving is achieved.
[0016]
In the above description, the case where the oil passing member is a T piece as shown in FIG. 2 has been described. Various shapes such as a disk-shaped member and a member in which the disk portion is umbrella-shaped can be used.
[0017]
【The invention's effect】
As described above, according to the present invention, the residual oil in the container can be automatically discharged outside the container by the opening and the oil passing member when the rotation of the container is stopped. That is, the opening is connected to the inside and outside of the bottom of the container, and one end of the oil passage member is connected to the opening and the other end is connected to the lower part of the container. The oil thus discharged is automatically discharged out of the container by gravity through the oil passage member and the opening from the lower part of the container. On the other hand, since the other end side of the oil passing member is conducted to a position farther from the center of the container than the position of the opening, the treated oil supplied into the container falls to the lower part of the container when the container rotates. And even if it reaches the other end side of the oil passing member, the centrifugal force acts from the opening side to the other end side in the oil passing member, so that the oil does not enter the oil passing member.
[0018]
As described above, oil leakage is automatically prevented when the container is rotated, and residual oil is automatically discharged when the rotation of the container is stopped. Therefore, when the rotation of the container is stopped and the sludge is discharged, the troublesome work of pumping out the residual oil becomes unnecessary and labor saving is achieved. Even if the oil to be treated is C heavy oil, if the oil supply and the rotation of the container are stopped, the residual oil is automatically discharged immediately, so that the temperature does not drop and solidify in the container. And by discharging residual oil, overload at the time of starting the motor is also prevented.
[0019]
Furthermore, when processing semi-solid soft sludge or oil with a high water content, etc., even when the timing of sludge discharge is not reached, simply stop the rotation of the container at an appropriate interval. Can be discharged automatically. Accordingly, it is possible to prevent a problem that soft sludge and water are mixed and discharged to the clean oil side during operation by an extremely simple operation.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a structural example of a centrifugal oil purifier.
FIG. 2 is an enlarged cross-sectional view of a part of the above.
[Explanation of symbols]
1 Centrifugal drum (container)
1a Centrifugal drum center (container center)
1-1b Opening 2 T-piece (oil-permeable member)
2-1 One end side 2-2a The other end side 2-2b The other end side

Claims (1)

In a centrifugal oil purifier that separates oil to be treated, which is put into a rotating container, into oil and other substances,
An opening electrically connected to the bottom and out the central inner portion provided on the container of said container, said other one end side and one end and the other side becomes conductive internally conducts towards the inside of the opening When the container is rotated when the end side is connected to a position farther from the center of the container than the position of the opening in the lower part of the container, the container is rotated and a centrifugal force acts from the opening side to the other end side inside the container. A centrifugal oil purifier characterized by having an oil passage member formed to do so .

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