CN110975334A

CN110975334A - Floating oil removing device

Info

Publication number: CN110975334A
Application number: CN201911164900.9A
Authority: CN
Inventors: 何国峰; 王宁; 马同堂; 赵亚宁; 王小强; 黄建瑞; 王芬; 解占辉; 赵焱
Original assignee: Ningbo Kocel Machine Tool Auxiliary Machinery Co Ltd
Current assignee: Ningbo Kocel Machine Tool Auxiliary Machinery Co Ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-04-10

Abstract

A floating oil removing device comprises a rotary drum and an overflow cavity, wherein a slag discharge port is arranged at the bottom of the overflow cavity, and a mixed liquid inlet is arranged above the slag discharge port; one end of the overflow cavity, which is close to the rotary drum, is provided with an overflow plate, one end of the overflow plate, which is far away from the rotary drum, is higher than one end of the overflow plate, which is close to the rotary drum, the upper surface of the overflow plate is coated with an oil distribution plate, the rotary drum is driven by a motor to rotate, the surface of the rotary drum is coated with a coating layer, and the outer edge part of the coating layer is close to the lowest end of the oil; an inclined downward oil guide plate is arranged on one side, away from the overflow cavity, of the rotary drum, one end of the oil guide plate is tangent to the rotary drum coating layer, an oil receiving box is arranged below the other end of the oil guide plate, and an oil discharge port is formed in the bottom of the oil receiving box. Through the overflow plate overflow, flow into the rotary drum by the oil distribution plate and then connect the oil box by leading the leading-in of oil board and discharge, utilize profit proportion to carry out the oil slick and collect, device simple structure, it is efficient.

Description

Floating oil removing device

Technical Field

The invention relates to the field of oil-water separation, in particular to a method for removing oil with light specific gravity floating on the surface of a liquid.

Background

In many industrial fields, a mixed liquid containing floating oil is generated, and a floating oil removing device is required when the mixed liquid is recycled or needs to be discharged. For example: (1) in the machining industry, various oils (rust preventive oil, guide rail oil and the like) are mixed in the cutting fluid, the specific gravity of the oils is light, the oils can float on the surface of the cutting fluid, the cutting fluid is prevented from contacting with air, and the cutting fluid is deteriorated due to the propagation of aerobiotic anaerobic bacteria. (2) Cleaning is required after machining or heat treatment of the mechanical parts, and the cleaning liquid is contaminated by the production oil or quenching oil, and the oil must be removed. There are several types of oil slick removal devices on the market today, for example: oil filters with bag and net-box filters are often clogged and difficult to clean. There are also belt or disc type skimmers, but they have a small oil removal and the oil skimmer belt or oil skimmer disc needs frequent maintenance and replacement.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a floating oil removing device which can rapidly remove a large amount of floating oil, simultaneously reduce the maintenance cost and is not easy to block.

The technical scheme adopted by the invention for solving the technical problems is as follows: a floating oil removing device comprises a rotary drum and an overflow cavity, wherein an overflow plate is arranged at one end, close to the rotary drum, of the overflow cavity, the end, far away from the rotary drum, of the overflow plate is higher than the end, close to the rotary drum, of the overflow plate, and the upper surface of the overflow plate is coated with an oil distributing plate; a slag discharge port is formed at the bottom of the overflow cavity, and a mixed liquid inlet is formed above the slag discharge port; the rotary drum is driven by a driving piece to rotate, a coating layer is coated on the surface of the rotary drum, and the outer edge part of the coating layer is close to the lowest end of the oil distribution plate; an inclined downward oil guide plate is arranged on one side, away from the overflow cavity, of the rotary drum, one end of the oil guide plate is tangent to the coating layer of the rotary drum, an oil receiving cavity is arranged below the other end of the oil guide plate, and an oil discharge port is formed in the bottom of the oil receiving cavity.

Further, a containing cavity is arranged outside the overflow cavity; an oil collecting cavity and a purified liquid outlet are arranged on one side of the containing cavity, which is far away from the rotary drum, and a side plate of the oil collecting cavity, which is close to one side of the overflow cavity, is used as a partition plate of the containing cavity and the oil collecting cavity; the top end of the baffle plate is lower than the lowest end of the overflow cavity and higher than the highest point of the purified liquid outlet.

Furthermore, a gathering cavity is arranged outside the overflow cavity, a baffle is arranged on one side of the gathering cavity far away from the overflow cavity, a secondary oil receiving cavity is arranged between the baffle and the overflow cavity, the secondary oil receiving cavity is provided with an overflow side plate, and the bottom of the secondary oil receiving cavity is provided with an oil discharge port; the height of the overflow side plate is higher than that of the baffle plate and lower than that of the overflow plate; the overflow chamber is kept away from at the baffle and one side sets up clean liquid chamber, clean liquid chamber bottom is equipped with horizontal seal plate, and the leakage fluid dram is established to the lateral wall, at horizontal seal plate installation flowing back subassembly, flowing back subassembly with accomodate the chamber with the leakage fluid dram intercommunication.

Further, the liquid discharge assembly comprises a hollow sleeve, an overflow pipe and a cylinder, wherein the sleeve is vertically fixed on the horizontal sealing plate; the overflow pipe is embedded in the sleeve and moves up and down, and the top end of the overflow pipe is higher than the horizontal sealing plate; the cylinder is connected with the top of the overflow pipe; and an overflow hole is formed in the lower position of the top end of the overflow pipe.

Furthermore, an induction device is arranged in the gathering cavity and comprises a first detection switch arranged on the side wall of the gathering cavity and a second detection switch lower than the first detection switch; the detection position of the first detection switch is lower than that of the overflow side plate, and the detection position of the second detection switch is higher than that of the baffle plate.

Further, the sensing device further comprises a time relay for detecting the discharge time of the clean liquid.

Furthermore, the coating layer is of a detachable structure and is made of plastics and/or metal.

Furthermore, the oil distribution plate is of a detachable structure, and the shape of the working surface is provided with bulges, pits or grooves.

According to the technical scheme, the floating oil removing device provided by the invention can be used for performing multi-stage oil-water separation through overflow according to the principles of low density and light specific gravity of floating oil, so that the content of the floating oil in the mixed liquid is gradually reduced. The surface of the oil distribution plate coated on the overflow plate is provided with the bulges and the pits, so that the overflowing floating oil layer can be distributed again, and the removal effect is improved; the floating oil is adhered by the rotation of the rotary drum, so that the floating oil removing efficiency is improved; adopt the cylinder to drive the overflow pipe and reciprocate in the clean liquid chamber and can effectively discharge clean liquid.

Drawings

FIG. 1 is a schematic structural diagram of a floating oil removing device according to an embodiment of the disclosure;

FIG. 2 is a schematic structural diagram of a floating oil removing device according to a second embodiment of the disclosure;

FIG. 3 is a schematic structural diagram of a floating oil removing device according to the disclosed embodiment of the invention;

FIG. 4 is a schematic view of a partial structure of a floating oil removing apparatus according to a third embodiment of the disclosure;

FIG. 5 is a schematic structural diagram of a floating oil removing device according to the disclosed embodiment of the invention;

in the drawings: 10-liquid tank, 11-left side wall, 12-right side wall, 100-rotary drum, 110-coating layer, 120-oil guide plate, 200-overflow cavity, 210-overflow plate, 220-oil separation plate, 230-slag discharge port, 240-mixed liquid inlet, 300-oil receiving cavity, 310-oil discharge port, 400-containing cavity, 410-partition plate, 420-purified liquid outlet, 430-oil level detection switch, 440-water level detection switch 450-containing cavity sewage discharge port, 500-oil collection cavity, 600-containing cavity, 610-partition plate, 700-secondary oil receiving cavity, 710-overflow side plate, 720-secondary oil discharge port, 800-purified liquid cavity, 810-horizontal sealing plate, 820-liquid discharge component, 821-hollow sleeve, 822-overflow pipe, 823-cylinder, 824-overflow hole, 830-liquid discharge port and 840-liquid purification baffle plate.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "left," "right," "top," "bottom," "top," and the like are for illustrative purposes only and do not represent the only embodiments. As used herein, the term "secured" may be mounted, welded, riveted, etc., and the term "connected" may be directly connected, indirectly connected, and the like for the purpose of illustrating the invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In the following embodiments, the front and rear walls of the liquid tank 10 are used as the front and rear walls of each chamber; the overflow plate is the lowest position in each cavity.

Example one

Referring to fig. 1, the floating oil removing apparatus includes a liquid tank 10 in which a rotary drum 100 and an overflow chamber 200 are disposed. An overflow plate 210 is arranged at one end of the overflow cavity 200 close to the rotary drum 100, the end of the overflow plate far away from the rotary drum 100 is higher than the end close to the rotary drum, a detachable oil distribution plate 220 is arranged on the upper surface of the overflow plate, and irregular surfaces such as bulges, pits, grooves and the like can be arranged on all or part of the working surface (upper surface) of the oil distribution plate to enhance the separation of liquid components. Further, the overflow chamber bottom is established to the V type bottom sets up row cinder notch 230, sets up mixed liquid entry 240 above arranging the cinder notch, and the purpose of setting up the V type is the later stage clearance residue of being convenient for. The drum 100 is driven by a driving member, which may be a pneumatic motor or an electric motor, preferably, a variable frequency motor is used to provide power to drive the drum to rotate (not shown), the surface of the drum is covered with a coating layer 110, the coating layer may be adhered or assembled on the drum, and the outer edge portion of the coating layer is close to the lowest end of the oil distribution plate and has a certain gap, so as to facilitate adhesion of floating oil and outflow of stock solution. The drum is far away from one side of the overflow cavity, an inclined downward oil guide plate 120 is arranged on one side of the drum, one end of the oil guide plate is tangent to the coating layer of the drum, an oil receiving cavity 300 is arranged below the other end of the oil guide plate, the oil receiving cavity takes the left side wall 11 as a side plate, and an oil outlet 310 is formed in the bottom of the oil receiving cavity.

The liquid supply station injects the mixed liquid into the overflow cavity 200 through the mixed liquid inlet 240 via a pipeline, and when the liquid level of the mixed liquid rises, floating oil floats on the liquid level due to different specific gravities of oil and water. Overflow occurs when the liquid level exceeds the overflow plate 210. The overflow liquid contains a large amount of floating oil and a small amount of stock solution, and reaches the rotary drum 100 through the oil separating plate 220, and the special overflow liquid is laminar flow under the motion state of the oil separating plate, and the floating oil and the stock solution are further layered in the process, namely, the upper layer floating oil and the lower layer stock solution. The rotary drum is driven by a motor to drive the coating layer 110 to rotate anticlockwise, upper-layer floating oil conveyed by the oil distribution plate is adhered to the coating layer and is rotationally taken out, the floating oil is transferred to the oil guide plate 120 side, and the floating oil is scraped by the oil guide plate and is guided into the oil receiving cavity 300 as the oil guide plate is tangent to the coating layer, and then is discharged from the oil discharge port 310. The lower layer stock solution flows into the liquid tank through the gap between the rotary drum and the oil separating plate for subsequent work. The liquid with low oil content can be used normally by the equipment after the floating oil is removed by the embodiment. The oil slick remove device that adopts in this embodiment, simple structure, convenient operation does not have the problem of jam. And the oil distribution plate and the coating layer are detachable structures, and the oil distribution plate can be detached for cleaning or replacement only when the oil sticking effect is not good, so that the maintenance is convenient and fast. The rotary drum adopts a variable frequency motor, the rotating speed of the rotary drum can be changed according to the actual oil content, and the rotating speed is increased when the floating oil is more; when the floating oil is small, the rotating speed is reduced, so that the energy consumption is reduced to the maximum extent while the floating oil is removed.

It should be noted that the height of mixed liquid inlet 240 is close to the bottom setting, and the formation machine separation that does not influence the liquid surface oil layer when the overflow chamber is poured into to mixed liquid like this on the one hand, and on the other hand is convenient for mix impurity, the sediment of waste residue in the liquid. After working for a period of time, the slag discharge port 230 can be opened to discharge impurities and waste slag. The coating layer is made of metal (copper, steel, stainless steel, aluminum or a combination thereof) and/or plastic material (polyethylene, polypropylene, nylon, rubber, silicon material, elastomer, polyvinyl chloride, ABS or other plastics), and may be any material capable of adsorbing or having affinity for an object to be separated.

Example two

Referring to fig. 2, in the first embodiment, a receiving chamber 400 is provided outside the overflow chamber 200. The side of the containing cavity far away from the rotary drum 100 is provided with a partition plate 410, the partition plate is connected with the bottom of the containing cavity in a sealing manner, and the top of the partition plate is lower than the highest point of the overflow plate 120. The partition and the right side wall 12 of the liquid tank form a cavity with sealed periphery as an oil collecting cavity 500, and an oil discharge port is arranged at the bottom in the oil collecting cavity. A clean liquid outlet 420 is arranged in the accommodating cavity 400, and the clean liquid outlet is lower than the highest point of the partition board, so that floating oil is prevented from being discharged along with the clean liquid.

Specifically, in the first embodiment, the liquid flowing out through the gap between the rotating drum and the separating plate flows into the receiving chamber 400 and gradually gathers, the floating oil further gathers at the uppermost position of the liquid surface, a part of the floating oil is positioned near the rotating drum 100, and a part of the floating oil is positioned between the partition plate 410 and the overflow chamber 200. The floating oil distributed under the rotary drum is absorbed by a coating layer rotating together with the rotary drum and then discharged. The floating oil between the partition and the overflow chamber flows into the oil collecting chamber through the partition and is discharged from the oil discharge port, and the clean liquid separated by the second layer is supplied to the subsequent use through the clean liquid outlet 420.

EXAMPLE III

Referring to fig. 3, in the first embodiment, a receiving chamber 600 is disposed outside the overflow chamber 100, and a partition 610 is disposed on a side of the receiving chamber away from the drum. A secondary oil receiving cavity 700 is arranged on the overflow cavity close to one side of the clapboard. Preferably, the secondary oil receiving cavity 700 uses the opposite side wall of the overflow plate 210 in the overflow cavity 200 as a side plate, and the side plate serves as a high end, and the opposite side plate serves as an overflow side plate 710, and the height of the side plate is higher than the highest end of the partition plate 610 but lower than the overflow plate 210 of the overflow cavity; an oil outlet 720 is arranged at the bottom of the secondary oil receiving cavity. Furthermore, a liquid purifying cavity 800 is arranged on one side of the partition board far away from the overflow cavity, the right side wall 12 of the liquid tank is used as a right side plate of the liquid purifying cavity, and the left side and the bottom of the liquid purifying cavity are sealed cavities formed by enclosing plates. And a gap is reserved between the bottom of the liquid purifying cavity and the bottom of the containing cavity. Specifically, a horizontal sealing plate 810 is arranged at the bottom of the liquid purifying chamber, a liquid discharging assembly 820 is arranged on the horizontal sealing plate, and a liquid discharging port 830 is arranged on the right side wall 12 above the horizontal sealing plate in the liquid purifying chamber. For further separating floating oil, a vertical liquid purification baffle 840 is arranged at the bottom of the liquid purification cavity, the top end of the liquid purification baffle is connected with the horizontal sealing plate in a sealing manner, and a gap is reserved between the bottom of the liquid purification baffle and the bottom of the containing cavity.

Referring to fig. 4, the liquid discharge assembly includes a hollow sleeve 821, an overflow pipe 822, and a cylinder 823, wherein the sleeve 821 is vertically fixed (assembled or welded) inside a hole where the horizontal sealing plate is matched with the horizontal sealing plate, and optimally, the upper end and the lower end of the sleeve protrude out of the horizontal sealing plate and are sealed with water; the outer wall of the overflow pipe 822 is embedded in the sleeve from above the horizontal sealing plate and can move up and down in the sleeve. And one end of the air cylinder 823 is connected with the top of the overflow pipe, and the other end of the air cylinder 823 is fixed at the top of the liquid purifying cavity. Further, an overflow hole 824 is formed at a position (near the cylinder side) lower than the top end of the overflow pipe. When the cylinder contracts, the height of the overflow hole is higher than the highest liquid level of the containing cavity 600.

Furthermore, a sensing device is arranged in the accommodating cavity and comprises a first detection switch 620 and a second detection switch 630 which is lower than the first detection switch, the sensing point of the first detection switch 620 is lower than the lowest point (namely, the overflow side) of the secondary oil receiving cavity 600, and the purpose is to send a signal to cylinder extension; the sensing point of the second detection switch 630 is higher than the highest point of the partition 610, so as to prevent floating oil from entering the clean liquid chamber.

Specifically, the liquid separated in the first embodiment gradually collects in the receiving chamber 600, and the floating oil further collects at the uppermost position of the liquid surface, a part of the floating oil is located near the rotary drum 100, and a part of the floating oil is located in the receiving chamber 600 between the secondary oil receiving chamber 700 and the clean liquid chamber 800. At this time, the cylinder 823 is in a contraction state, the overflow pipe 822 connected with the cylinder is in a high position, and the overflow port 824 is higher than the highest point of the liquid surface of the containing cavity, so that when the liquid level of the floating oil layer is higher than the highest point of the partition plate, clean liquid can be turned into the clean liquid cavity through the partition plate. Because horizontal seal board and telescopic are sealed, clean liquid is restricted inside the overflow pipe, because the linker principle, the inside liquid level of overflow pipe keeps unanimous basically with the liquid level of accomodating the inside of chamber 600, simultaneously, when the overflow pipe was in the high-order, overflow mouth 824 highly was higher than the second grade and connects the oil chamber minimum, along with the continuous rising of liquid level, floated the oil layer and was constantly lifted. The floating oil distributed below the rotary drum is absorbed by a coating layer rotating along with the rotary drum and then is discharged. The floating oil between the second-stage oil receiving cavity and the clean liquid cavity is gradually gathered, then turns over the overflow side plate 710 of the second-stage oil receiving cavity, overflows to the second-stage oil receiving cavity and is discharged through the second-stage oil outlet 720.

When the height of the stock solution in the accommodating cavity rises to the first detection switch 620, the cylinder extends out after receiving a signal. Referring to fig. 5, the overflow pipe moves downward to a low position, and the clean liquid overflows from the overflow port 824 into the clean liquid cavity and is discharged from the liquid discharge port 830. Along with the discharge of clean liquid, accomodate the intracavity liquid level and descend, when the liquid level descends to the second and detects 630 switches, the cylinder shrink, and clean liquid discharges and stops, and the oil slick gathers once more, repeats above-mentioned process. The first detection switch and the second detection switch distinguish the stock solution from the floating oil by detecting the density, and the measurement can be performed by using an immersion densitometer. Before detection, density ranges of stock solution or floating oil are respectively set, and when the density ranges of the stock solution or the floating oil are in work, a signal is sent when the value detected by the first detection switch is within the set value range of the stock solution; and not acting when the detected value is not within the range. The second detection switch can set the floating oil value range, and the value detected by the second detection switch acts in the set range after the first detection switch sends out a signal, otherwise, the floating oil value does not act. Or the second detection switch adopts a floating ball switch, and the switch is triggered to act through the height of the floating ball.

According to the embodiment, the floating oil can be removed in multiple stages, so that the oil removal amount is large and the oil removal effect is better. The sensing device can automatically discharge the purified liquid, liberates labor force and realizes automatic operation.

Example four

On the basis of the third embodiment, the sensing device can be further provided with a time relay, when the cylinder extends out and the discharge of the purified liquid is started, the time relay starts to time, and when the time reaches a set value, the cylinder starts to contract and the discharge of the purified liquid is stopped. The discharge time of the clean liquid is controlled through a time relay, the lowest point of the liquid level of the stock solution is indirectly controlled, and the floating oil is ensured not to be discharged along with the clean liquid.

It should be noted that, in the above embodiments, each cavity is a water-tight structure; and in order to drain liquid or discharge slag conveniently and quickly, the bottom of each cavity can be set to be V-shaped.

The invention can effectively remove floating oil by a multi-stage aggregation oil removal method, and has high oil removal efficiency, good effect and large oil removal amount. The manufacturing cost and the maintenance cost are low when the equal efficiency and the oil removal amount are realized; the method is suitable for separating any fluid with density or specific gravity smaller than that of the stock solution from the stock solution, and has wide application range.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The floating oil removing device is characterized by comprising a rotary drum and an overflow cavity, wherein an overflow plate is arranged at one end, close to the rotary drum, of the overflow cavity, the end, far away from the rotary drum, of the overflow plate is higher than the end, close to the rotary drum, of the overflow plate, and the upper surface of the overflow plate is coated with an oil distributing plate; a slag discharge port is formed at the bottom of the overflow cavity, and a mixed liquid inlet is formed above the slag discharge port; the rotary drum is driven by a driving piece to rotate, a coating layer is coated on the surface of the rotary drum, and the outer edge part of the coating layer is close to the lowest end of the oil distribution plate; an inclined downward oil guide plate is arranged on one side, away from the overflow cavity, of the rotary drum, one end of the oil guide plate is tangent to the coating layer of the rotary drum, an oil receiving cavity is arranged below the other end of the oil guide plate, and an oil discharge port is formed in the bottom of the oil receiving cavity.

2. The oil slick removing device of claim 1, wherein a receiving cavity is arranged outside the overflow cavity; an oil collecting cavity and a purified liquid outlet are arranged on one side of the containing cavity, which is far away from the rotary drum, and a side plate of the oil collecting cavity, which is close to one side of the overflow cavity, is used as a partition plate of the containing cavity and the oil collecting cavity; the top end of the baffle plate is lower than the lowest end of the overflow cavity and higher than the highest point of the purified liquid outlet.

3. The floating oil removing device as claimed in claim 1, wherein a gathering chamber is arranged outside the overflow chamber, a baffle plate is arranged on one side of the gathering chamber far away from the overflow chamber, a secondary oil receiving chamber is arranged between the baffle plate and the overflow chamber, the secondary oil receiving chamber is provided with an overflow side plate, and the bottom of the secondary oil receiving chamber is provided with an oil outlet; the height of the overflow side plate is higher than that of the baffle plate and lower than that of the overflow plate; the overflow chamber is kept away from at the baffle and one side sets up clean liquid chamber, clean liquid chamber bottom is equipped with horizontal seal plate, and the leakage fluid dram is established to the lateral wall, at horizontal seal plate installation flowing back subassembly, flowing back subassembly with accomodate the chamber with the leakage fluid dram intercommunication.

4. The oil slick removing device as claimed in claim 3, wherein the liquid drainage assembly comprises a hollow sleeve, an overflow pipe, a cylinder, the sleeve being vertically fixed on the horizontal sealing plate; the overflow pipe is embedded in the sleeve and moves up and down, and the top end of the overflow pipe is higher than the horizontal sealing plate; the cylinder is connected with the top of the overflow pipe; and an overflow hole is formed in the lower position of the top end of the overflow pipe.

5. The oil slick removing device of claim 3, wherein a sensing device is further provided in the gathering chamber, and the sensing device comprises a first detection switch mounted on a side wall of the gathering chamber and a second detection switch lower than the first detection switch; the detection position of the first detection switch is lower than that of the overflow side plate, and the detection position of the second detection switch is higher than that of the baffle plate.

6. The oil slick removing apparatus of claim 5, wherein the sensing means further comprises a time relay for detecting a net liquid discharge time.

7. The oil slick removing device of claim 1, wherein the coating layer is a detachable structure and is made of plastic and/or metal.

8. The oil slick removing device of claim 1, wherein the oil separating plate is a detachable structure, and the shape of the working surface is provided with a protrusion, a pit or a groove.