KR101694233B1 - Separator for oil and water from waste cutting oil - Google Patents

Separator for oil and water from waste cutting oil Download PDF

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Publication number
KR101694233B1
KR101694233B1 KR1020150158877A KR20150158877A KR101694233B1 KR 101694233 B1 KR101694233 B1 KR 101694233B1 KR 1020150158877 A KR1020150158877 A KR 1020150158877A KR 20150158877 A KR20150158877 A KR 20150158877A KR 101694233 B1 KR101694233 B1 KR 101694233B1
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South Korea
Prior art keywords
oil
floating
driving motor
opening
closing plate
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KR1020150158877A
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Korean (ko)
Inventor
김태균
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신진 엠.티.테크 주식회사
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Priority to KR1020150158877A priority Critical patent/KR101694233B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/10—Arrangements for cooling or lubricating tools or work
    • B23Q11/1069—Filtration systems specially adapted for cutting liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/12—Arrangements for cooling or lubricating parts of the machine

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Removal Of Floating Material (AREA)

Abstract

The present invention is characterized in that a collecting box 120 is provided at one side of a reservoir 10 and each side has a floating oil inlet 122 having a predetermined curvature, An opening and closing plate 140 rotatably fixed to the fixing bolt 144 and opening and closing the respective floating oil inflow ports 122 and a valve plate 140 coupled to the bent end 141 formed on the other side of each opening and closing plate 140, A floating oil collecting part (100) including a floating port (160) floating according to the level of the waste cutting oil (1) stored in the cage (10); A driving motor 220 installed on the collecting box 120 and a through hole 242 through which the rotating shaft 222 of the driving motor 220 is inserted is formed on a central portion of the upper surface of the collecting box 120, And the other end portion communicated with one end of the pumping box 240 is connected to a driving motor (not shown) of the driving motor 220. The driving motor 220 is connected to the driving motor 220, And the other end portion connected to and extending from the discharge port 264 is connected to the inlet port 32 of the filtration device 30. The discharge port 262 is connected to the inlet port 32 of the filtration device 30, A floating oil suction part (200) including a hose (266); The present invention provides an apparatus for separating waste water from a waste water.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002]

More particularly, the present invention relates to an apparatus for separating waste oil from waste cutting oil, which is filled in a low water tank using a driving motor, The present invention relates to a pulmonary coolant oil separation device capable of quickly filtering out the discharged pulmonary coolant oil and ensuring stable operation for a long period of time.

The cutting oil discharged through the cutting process is mixed with lubricating oil used for smooth operation of the machine tool, and oil such as anti-rust oil which is on the material to be cut. Cutting oil is not used for disposal but is used repeatedly through a cleaning process. When oil is mixed into the cutting oil, the cutting oil is easily corroded and the accuracy of the cutting process is significantly reduced.

To this end, related industries have installed a device called oil skimmer as a means to remove floating oil from the cutting oil discharged through the cutting process. 6, the oil skimmer is configured such that one end portion of the belt 30, which is endlessly rotated by the drive motor 11, passes through the inside of the illustrated low-water cistern, The oil adsorbed on the surface of the belt 30 is collected by the hopper 40 by using the pressing roll 24 when the oil is adsorbed on the surface of the belt 30 and moved upward.

However, when the oil is once adsorbed to the belt by its nature, the oil is not completely removed by the pressing roll, but a certain amount remains. Since the amount of such oil remaining without being completely removed from the belt accumulates over time, There is a problem in that the time lapses significantly.

Another technique for removing floating oil from cutting oil is to use the rotational force of the motor among the proposed techniques. 7, a drive motor 7 is installed below a low-water bottle 1, and a rotary shaft of the drive motor 7 is connected to a rotary shaft 2 located inside the low- The oil contained in the cutting oil is centrifugally separated from the cutting oil by using the rotational force of the drive motor 7. [

However, this technology is intended to centrifuge the cutting oil and the oil as centrifugal force of the drive motor to suspend the oil and discharge it to the outside. Considering that the cutting oil itself has a certain viscosity, the centrifugal force causes the oil and the cutting oil The separated oil can not be easily separated, and even if the oil is separated, the separated oil is not removed promptly, and when a predetermined time elapses, the separated oil is mixed again with the cutting oil.

Korean Registered Utility Model No. 0437075, Korean Patent Publication No. 2000-0013471

It is an object of the present invention to provide a water separation apparatus capable of rapidly sucking a large amount of suspended oil from pulmonary coolant filled in a low water cistern and sending it out to a filtration apparatus. .

In order to achieve the above object, according to the present invention, there is provided a cowl (10) in which waste cutting oil (1) used in a cutting process is stored, an outlet (39) at one side and an inlet (32) And a second filtration device (40) provided on one side of the upper part of the filtration device (30), wherein the first filtration device (30) A collecting box 120 provided at one side of the reservoir 10 and provided with a floating oil inlet 122 having a predetermined curvature at each side of the collecting box 120; An opening and closing plate 140 rotatably fixed to the fixing bolt 144 and opening and closing the respective floating oil inflow ports 122 and a valve plate 140 coupled to the bent end 141 formed on the other side of each opening and closing plate 140, (110) including a floating port (160) that floats according to the level of the waste cutting oil (1) stored in the receptacle (10) An oil collector (100); A driving motor 220 installed on the collecting box 120 and a through hole 242 through which the rotating shaft 222 of the driving motor 220 is inserted is formed on a central portion of the upper surface of the collecting box 120, And the other end portion communicated with one end of the pumping box 240 is connected to a driving motor (not shown) of the driving motor 220. The driving motor 220 is connected to the driving motor 220, And the other end portion connected to and extending from the discharge port 264 is connected to the inlet port 32 of the filtration device 30. The discharge port 262 is connected to the inlet port 32 of the filtration device 30, A floating oil suction part (200) including a hose (266); As a technical feature.

A guide groove 142 having a predetermined curvature is formed in the opening and closing plate 140. One end of the fixing bolt 144 is fixedly coupled to the collection box 120 and the other end is connected to a guide groove 142 A guide bolt 146 may be provided to guide the open / close movement of the opening / closing plate 140.

At this time, each floating oil inlet 122 of the collecting box 120 may be provided with a rim 182 protruding at a predetermined vertical height along a corner portion of the floating oil inlet 122.

A guide end 186 having a vertical height greater than the vertical height of the rim 182 and having a predetermined curvature may be provided on an outer surface of the collection box 120 spaced apart from the respective floating oil inflow ports 122 have.

An air injection pipe 300 is installed in the lower part of the first filtering device 30 and one side of the air injection pipe 300 may extend into the first filtering device 30.

According to the present invention, since the oil floating on the water surface of the waste cutting oil can be sucked out by the powerful driving motor and sent out to the filtration apparatus, even if a large amount of waste cutting oil is discharged at the work site, In addition, it is advantageous in that the oil can be stably used for a long period of time in that the oil is sucked by the suction force according to the operation of the impeller.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic side view of a water separation apparatus according to the present invention. FIG.
2 is a schematic other side view of the oil water separator according to the present invention.
3 is a schematic top view of the oil water separator according to the present invention.
4 is a schematic cross-sectional structural view of line AA 'in FIG. 3;
5A is a schematic plan view of a floating oil collecting part in the oil water separating apparatus according to the present invention.
FIG. 5B is a schematic side view of the suspended oil collecting part in the oil water separator according to the present invention. FIG.
Fig. 6 is a schematic structural view of an oil skimmer using a conventional belt; Fig.
7 is a schematic structural view of a water-oil separator using a conventional driving motor.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the technical features of the present invention, A detailed description thereof will be omitted.

1 to 3 are a schematic side view, a side view, and a top view, respectively, of a water separator according to the present invention, and FIG. 4 is a schematic cross-sectional view of a line AA 'in FIG. 3 . The present invention is characterized in that it comprises a reservoir 10, a filtration device, a floating oil collecting part 100, and a floating oil suction part 200 as disclosed in the respective drawings. Hereinafter, each of these configurations will be described in detail.

The receptacle (10) is a cylinder for filling the waste cutting oil (1) used in the cutting process and discharged therefrom. A receptacle space of a certain size is provided inside the receptacle (10). Although not shown in the drawings, hoses are connected to the lower water tube 10 for the inflow of the waste cutting oil.

The filtration apparatus is a device for separating the oil sucked and discharged by the floating oil suction unit 200 into cutting oil and oil and can be installed at a predetermined interval above the reservoir 10 via the support frame 20 have. The filtration device may have a variety of configurations, and one example of the filtration devices 30 and 40 is shown in the drawing.

The first filtration device 30 is a means for discharging the cutting oil separated from the oil sucked and discharged from the floating oil suction part 200 and includes an inlet port 32, a separation plate 31, a partition wall 36, 38 and an oil discharge hole 33 are provided. The inlet port 32 is formed at the other side of the first filtering device 32 as a portion into which the oil sucked in the floating oil suction part 200 flows.

The separating plate 31 is a means for separating the cutting oil and the oil from the oil discharged through the inlet 32. The lower portion of the separating plate 31 is bent at a predetermined angle and is provided on the inner side of the first filtering device 30 . The partition wall 36 is means for partitioning the internal space of the first filtration device 30, and the lower side thereof is opened. The induction pipe 38 is disposed inside the partition wall 36 as a means for discharging the cutting oil separated from the oil and has a discharge port 39 at a lower portion thereof.

The oil discharge hole 33 is formed on the upper surface of the first filtration device 30 as a part of the oil separated from the cutting oil. Each of the reference numerals 34 and 35 is a collection plate and a discharge port. The discharge port 34 is a means for collecting debris such as chips and the like contained in the oil, and the discharge port 35 is a means for discharging the debris settled in the collection plate 34 to the outside. The discharge port can be made of a conventional stopper.

The present invention does not exclude the case where the air injection tube 300 is provided in the lower part of the first filtration device 30 as shown in the drawing. One side of the air injection pipe 300 extends into the first filtration device 30 and injects air into the first filtration device 30 through the air injection hose 310 connected to the other end. In this case, the oil introduced into the first filtering device 30 can be more easily floated to the water surface by the air to be injected. The air inlet hose 310 is connected to a pump not shown.

The second filtration device 40 is a means for secondarily separating and discharging the oil that has been separated first from the cutting oil and oil and is installed on the upper side of the filtration device 30 in which the oil discharge hole 33 is formed. The second filtration unit 40 is provided with a secondary partition 42, an auxiliary outlet 44, and an oil outlet 46.

The auxiliary partition wall (42) is a part for partitioning the inner space of the second filtration device (40), and the lower side is opened. The auxiliary discharge port 44 is located at one side of the auxiliary partition wall 42 to discharge the cutting oil separated from the oil and the oil discharge port 46 is located at the other side of the auxiliary partition wall 42 as the oil discharge area.

The floating oil collecting part 100 includes a collecting box 120, an opening and closing plate 140, and a floating part 160 as means for collecting floating oils from waste cutting oil filled in the low-water cistern 10.

The collecting box 120 is installed at one side of the low-water tub 10, and each side has a floating oil inlet 122. It is preferable that the floating oil inlet 122 is formed in a shape of arc having a certain curvature as shown in the figure.

The present invention does not exclude the case where a rim 182 protruding at a predetermined vertical height along the edge portion of each floating oil inlet 122 is provided. The opening and closing plate 140 is brought into contact with the outer surface of the collecting box 120 due to the hydraulic pressure of the waste cutting oil 1 filled in the tank 10 so that the operation of the opening and closing plate 140 may not be smooth. In this case, the outer surface of the opening / closing plate 140 and the collecting box 120 can be spaced apart from each other by the rim 182, so that the operation of the opening / closing plate can be smoothly performed.

The present invention does not exclude the case where the guide end 186 is provided on the outer surface of the collection box 120. [ The guide end 186 is spaced apart from the respective floating oil inflow ports 122 by a predetermined distance and has a vertical height larger than the vertical height of the rim 182 as shown in the figure and preferably has a predetermined curvature. The entire length of the guide end 186 is preferably smaller than the entire length of the floating oil inlet 122.

In this case, the inner surface of the opening / closing plate 140 is operated while being in contact with the upper surface portion of the guide end 186, and an interval of Δh is formed between the inner surface of the opening / closing plate 140 and the rim 182. The opening and closing movement of the opening and closing plate 140 can be freed independently from the interference with the rim 182 and the inflow of the pulsating oil 1 stored in the reservoir 10 This can be more smooth. Particularly in the latter case, it is possible to allow the flow of the waste cutting oil when the opening / closing plate 140 completely closes the floating oil inlet 122 because the water level of the waste cutting oil 1 is high.

The opening / closing plate 140 may have a plate-like structure for opening / closing the floating oil inlet 122, and one side of the opening / closing plate 140 may be rotatably coupled to the fixing bolt 144. The fixing bolt (44) is fixedly coupled to a side portion of the collection box (120). Accordingly, the opening / closing plate 140 can reciprocate at a predetermined angle using the fixing bolt 44 as a rotation axis.

The present invention does not exclude the case where the opening / closing plate 140 is formed with the guide bolt 146 and the guide groove 142 to be mediated. It is preferable that the guide groove 142 is formed in a shape of arc having a certain curvature as shown in the figure. One end of the guide bolt 146 is fixedly coupled to the collection box 120, and the other end of the guide bolt 146 is exposed through the guide groove 142. In this case, the open / close movement of the opening / closing plate 140 can be more stably guided.

The floating member 160 is coupled to the bent end 141 formed on the other side of the opening / closing plate 140 by means of floating along the water level of the waste cutting oil 1 stored in the low- The floating member 160 may be made of any one of synthetic resin or metal. Reference numeral 162 denotes a floating fastening bolt. As shown in the drawing, when the floating member 160 is lowered in conjunction with the pulverized cutting oil, the opening / closing plate 140 opens the floating oil inlet 122, and when the floating member 160 moves up and down with the pulverized cutting oil, ) Closes the floating oil inlet 122.

The floating oil suction unit 200 is a means for introducing the oil of the pewter oil 1 stored in the water storage tank 10 to the floating oil collecting unit 100 and then sending the oil to the filtering apparatus, A pumping box 240, a discharge hose 262 and a connection hose 266. [

The drive motor 220 is a power source for sucking and discharging the floating oil, and is installed above the collection box 120. [ When the support frame 20 is mediated, it may be installed on the lower end of the support frame 20. [ The rotation axis 222 of the drive motor 220 extends downward. The drive motor may be a conventional motor.

The pumping box 240 is spaced apart from the driving motor 220 by a predetermined distance. A through hole 242 is formed in the upper part of the upper surface of the pumping box 240 so that the rotational axis 222 of the driving motor 220 is extended and inserted into the impeller 244 which is axially coupled to the end of the rotating shaft 222. . The through hole 242 is a portion into which the oil flows, and is larger than the diameter of the rotation shaft 222 as shown in the drawing.

When the impeller 244 rotates at a high speed due to the operation of the drive motor 220, a strong suction force is generated. The suction force generated at this time causes the pulverized cutting oil or floating oil to flow into the pumping box 240 through the through hole 242 And then discharged sequentially. Reference numeral 241 denotes a support rod for supporting the pumping box 240.

One end of the discharge hose 262 communicates with one side of the pumping box 240 and the other end of the discharge hose 262 extends to one side of the lower portion of the drive motor 220 And is connected to an outlet 264 provided. The connection hose 266 is connected to the outlet port 264 of the filtration device 30. The connection hose 266 is connected to the outlet port 264 of the filtration device 30.

The schematic operating configuration of the present invention having such a configuration will be described with reference to the above description and the accompanying drawings.

When the drive motor 220 is operated according to an input signal of a control device (not shown), the impeller 242 rotates at a high speed. A part of the pulverized cutting oil 1 filled in the lower water tube 10 is sucked into the through hole 242 of the pumping box 240 due to the strong suction force generated in the pumping box 240 due to the high rotation of the impeller 244, And then flows into the inlet 32 of the first filtration device 30 through the discharge hose 262 and the connection hose 266 in order.

If the level of the pulverized cutting oil 1 filled in the reservoir 10 at the time when the drive motor 220 is operated is higher than the upper end of the floating oil inlet 122, the floating port 160 also rises accordingly, 140 have closed the floating oil inlet 122. However, since the gap between the inner surface of the opening / closing plate 140 and the rim 182 is formed by Δh, when the driving motor 220 is operated, the waste coolant is collected along the space formed by the interval Δh And then flows into the box 120.

When the cutting oil is sent to the first filtration device 30 by the suction force which is continuously operated by the impeller 244, the level of the pulverized cutting oil gradually becomes lower. Accordingly, the opening / closing plate 140 begin to open the floating oil inlet 122 gradually. When the floating oil inlet 122 is opened, the oil floating on the water surface of the waste cutting oil 1 flows through the floating oil inlet 122 and the pumping box 240 into the inlet 32 of the first filtering device 30 ).

When the oil including the cutting oil is discharged through the inlet 32, the oil collides with the separator plate 31 as shown in the drawing, and the oil and the oil are primarily separated. The cutting oil separated by the separating plate 31 flows into the partition wall 36 through the lower opening of the partition wall 36 as shown in the figure and the oil separated by the separating plate 31 flows into the partition wall 36, It floats from the outside. At this time, when the air is injected through the air injection pipe 300, the oils can float more easily.

The cutting oil flowing into the inner space through the lower opening of the partition wall 36 in the state that the oil is removed travels over the upper end portion of the induction pipe 38 to enter the induction pipe 38, . The coolant discharged through the discharge port 39 is sent to a machine tool (not shown) and reused for work. On the other hand, most of the cutting oil separated from the oil escapes to the lower opening of the partition wall 36, but the cutting oil that has not escaped to the lower opening of the notched partition wall 36 is discharged to the oil discharge hole 33 sequentially with the oil .

In the oil discharged from the oil discharge hole 33, the cutting oil is separated from the oil and discharged to the outside via the auxiliary discharge port 44 through the lower opening of the auxiliary partition wall 42 as shown in the figure, And is discharged to the outside through the oil discharge port 46. The oil discharged to the oil discharge port 46 is collected and discarded, and the coolant discharged through the auxiliary discharge port 44 is discharged to a machine tool (not shown) and reused for work.

As described above, according to the present invention, a large amount of oil floating in a low water tank is quickly sucked into a collecting box as an impeller operated by a driving motor by using a floating port interlocked with the water surface of the pulverized cutting oil filled in a low- By proposing a configuration that can be sent out by the filtration device, stable oil separation can be achieved for a long time, and even if a large amount of waste cutting oil is discharged, it can be quickly cleaned and reused.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. It will be apparent that the present invention can be practiced with added features.

10: low water bottle 20: support frame
30: first filtration device 40: second filtration device
100: Suspended oil collecting part 120: Collecting box
140: opening / closing plate 160: floating member
200: floating oil suction part 220: drive motor
240: Pumping box 300: Air inlet tube

Claims (5)

A first filtration device 10 installed at an upper portion of the water container 10 with an outlet port 39 at one side and an inlet port 32 at the other side for storing waste cutting oil 1 used in a cutting process; And a second filtration device (40) provided at one side of the filtration device (30) and having an oil discharge port (46) at one side thereof,
A collecting box 120 installed at one side of the cowl 10 and provided with a floating oil inlet 122 having a predetermined curvature at each side thereof and a fixing bolt 144 provided at one side of the collecting box 120 An opening and closing plate 140 rotatably and fixedly coupled to the opening and closing plate 140 to open and close the respective floating oil inflow ports 122 and a lower end of the watertight container 10 coupled to a bent end 141 formed on the other side of the opening and closing plate 140, A floating oil collecting part 100 including a floating port 160 floating according to the level of the waste cutting oil 1 stored in the floating oil collecting part 100;
A driving motor 220 installed on the collecting box 120 and a through hole 242 through which the rotating shaft 222 of the driving motor 220 is inserted is formed on a central portion of the upper surface of the collecting box 120, And the other end portion communicated with one end of the pumping box 240 is connected to a driving motor (not shown) of the driving motor 220. The driving motor 220 is connected to the driving motor 220, And the other end portion connected to and extending from the discharge port 264 is connected to the inlet port 32 of the filtration device 30. The discharge port 262 is connected to the inlet port 32 of the filtration device 30, A floating oil suction part (200) including a hose (266);
Wherein the oil separator comprises: The method according to claim 1,
A guide groove 142 having a predetermined curvature is formed in the opening and closing plate 140. One end of the fixing bolt 144 is fixedly coupled to the collection box 120 and the other end is connected to a guide groove 142 And a guide bolt (146) for guiding the opening / closing movement of the opening / closing plate (140). The method according to any one of claims 1 to 3,
Wherein each floating oil inlet (122) of the collecting box (120) is provided with a rim (182) protruding at a predetermined vertical height along a corner portion of the floating oil inlet (122). The method of claim 3,
A guide end 186 having a vertical height larger than the vertical height of the rim 182 and having a predetermined curvature is provided on the outer surface of the collection box 120 spaced apart from the respective floating oil inflow ports 122 Wherein the pulverized oil is supplied to the oil separator. The method according to claim 1,
Wherein an air injection pipe 300 is installed in the lower part of the first filtering device 30 and one side of the air injection pipe 300 extends into the first filtering device 30. [ .
KR1020150158877A 2015-11-12 2015-11-12 Separator for oil and water from waste cutting oil KR101694233B1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980073299A (en) * 1997-03-10 1998-11-05 이동열 Oil-water separator
KR100437075B1 (en) 2002-03-26 2004-06-25 최원영 the purificate method of a rainwater in an underflow pond and that equipments
KR101234718B1 (en) * 2011-11-10 2013-02-19 주식회사 담형엔지니어링 An oil-water separator
KR101377754B1 (en) * 2012-05-23 2014-03-24 신진 엠.티.테크 주식회사 A self-priming multi-centrifugal type cutting oil purification apparatus
KR101463940B1 (en) * 2013-12-02 2014-12-04 신진 엠.티.테크 주식회사 An oil skimmer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980073299A (en) * 1997-03-10 1998-11-05 이동열 Oil-water separator
KR100437075B1 (en) 2002-03-26 2004-06-25 최원영 the purificate method of a rainwater in an underflow pond and that equipments
KR101234718B1 (en) * 2011-11-10 2013-02-19 주식회사 담형엔지니어링 An oil-water separator
KR101377754B1 (en) * 2012-05-23 2014-03-24 신진 엠.티.테크 주식회사 A self-priming multi-centrifugal type cutting oil purification apparatus
KR101463940B1 (en) * 2013-12-02 2014-12-04 신진 엠.티.테크 주식회사 An oil skimmer

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