Cyclone oil removal device and oil removal method

Abstract

The application discloses a kind of cyclone pool oil removal device and oil removal method, cyclone pool oil removal device includes electric linear module, oil collecting bucket and be set in the liquid level sensor of cyclone pool pool, the fixed end of electric linear module is vertically arranged outside cyclone pool pool, the upper portion of oil collecting bucket is provided with the air inlet for supplying compressed air, the lower portion of oil collecting bucket is provided with the oil outlet for discharging oil dirt, the barrel mouth of oil collecting bucket is provided with sealing opening and closing mechanism, one end of connecting piece is fixedly connected at the output end of electric linear module, the other end of connecting piece extends to cyclone pool pool and fixedly connects oil collecting bucket, electric linear module, sealing opening and closing mechanism and liquid level sensor are all electrically connected controller.The application can be controlled to lift oil collecting bucket according to the liquid level in cyclone pool, so that the barrel mouth of oil collecting bucket is flush with the liquid level in cyclone pool, to basically ensure that only oil dirt flows into oil collecting bucket and is discharged from oil collecting bucket, and secondary oil-water separation process is not needed, so as to be favorable to improve oil removal efficiency.

Description

Technical Field

[0001] This invention belongs to the field of cyclone separator oil removal technology, and particularly relates to cyclone separator oil removal device and oil removal method. Background Technology

[0002] Cyclone separators are commonly used in wastewater treatment. They cause impurities in the water to settle and oil slicks to float to the surface for easy collection and removal. Continuous casting workshops in steel plants are typically equipped with multiple cyclone separators. Grab buckets are used to remove sediment from the center of the separator, while suspended oil slicks are manually scooped away from the sides. However, during casting machine maintenance, the large volume of oil discharged often results in prolonged scooping times, and the considerable depth of the cyclone separator makes lifting difficult. Furthermore, the scooping process requires frequent bending and is conducted outdoors, leading to high labor intensity, low efficiency, and safety hazards such as heatstroke and falls.

[0003] Currently, some solutions utilize centrifugal pumps for oil removal. However, the oil sludge in the cyclone tank is a mixed oil with added flocculants, making it very viscous and with poor fluidity. Therefore, it easily clogs the pipes, making it difficult for centrifugal pumps to extract it. At the same time, the oil sludge contains a large number of air bubbles, which can easily burn out the centrifugal pump during extraction.

[0004] Some solutions use commonly available oil suction belts or steel belt skimmers. However, oil suction belts are not continuous and are troublesome to handle later; in addition, steel belt skimmers have extremely low oil suction efficiency. Summary of the Invention

[0005] To overcome the shortcomings of the prior art, this invention provides a cyclone pool oil removal device and method, which can improve oil removal efficiency.

[0006] The objective of this invention is achieved through the following technical solution: In a first aspect, a cyclone separator for oil removal is provided, comprising: The electric linear module has its fixed end vertically positioned outside the vortex pool. An oil collection tank is provided with an air inlet at the top for supplying compressed air and an oil outlet at the bottom for discharging oil. A sealing opening and closing mechanism is installed at the opening of the oil collection tank; The connector has one end fixedly connected to the output end of the electric linear module, and the other end extends into the vortex pool and is fixedly connected to the oil collection tank. A liquid level sensor is installed inside the vortex tank. The controller is electrically connected to the electric linear module, the sealing opening and closing mechanism, and the liquid level sensor.

[0007] Furthermore, the oil collection tank includes a sealing cone, an oil storage tank with a fixed connecting component, and an oil collection pan that is sealed and fixedly connected to the upper end of the oil storage tank. The sealing opening and closing mechanism includes a linear drive mechanism that is electrically connected to the controller. The fixed end of the linear drive mechanism is fixedly connected vertically above the oil collection tank, and the output end of the linear drive mechanism is vertically downward and fixedly connected to the sealing cone. A sealing gasket is provided on the cone surface of the sealing cone to seal and adhere to the upper inner wall of the oil collection pan after rising.

[0008] Furthermore, the upper end of the oil storage tank and the lower end of the oil collection tray are respectively provided with a first flange and a second flange that are detachably connected to each other, and a sealing ring is coaxially provided between the first flange and the second flange.

[0009] Furthermore, a bracket is provided at the upper end of the second flange, and the fixed end of the linear drive mechanism is fixedly connected to the bracket.

[0010] Furthermore, several claw-shaped parts are provided circumferentially at the edge of the second flange.

[0011] Furthermore, the linear drive mechanism includes a cylinder, with an air inlet provided through the inner and outer sides of the sealing cone.

[0012] Furthermore, the cyclone separator includes a main valve, a first electric valve, a buffer tank, and a solenoid directional valve. One end of the main valve is connected to the air supply system, and the two ends of the first electric valve are respectively connected to the other end of the main valve and the buffer tank. The buffer tank is connected to the air inlet. The inlet of the electromagnetic directional valve is connected to the other end of the main valve through a pneumatic triplet, and the two working ports of the electromagnetic directional valve are connected to the rod chamber and rodless chamber of the cylinder, respectively. The controller is electrically connected to the first electric valve and the solenoid directional valve.

[0013] Furthermore, the cyclone separator oil removal device includes a ball valve, a second electric valve, a cleaning solution mixing tank, and a third electric valve. One end of the ball valve is connected to the water supply system, and the other end of the ball valve is connected to the cleaning solution mixing tank through the second electric valve. The cleaning solution mixing tank is equipped with a cleaning solution inlet and a stirrer, and a pressure sensor is installed inside the cleaning solution mixing tank. The lower end of the cleaning solution mixing tank is connected to the upper end of the buffer tank via a third electric valve, and the lower part of the buffer tank is connected to the air inlet. The controller is electrically connected to the second electric valve, the stirrer, the pressure sensor, and the third electric valve.

[0014] Furthermore, an oil outlet is provided at the bottom of the oil storage tank, and a support foot is provided at the bottom of the oil storage tank.

[0015] Secondly, a cyclone separator oil removal method is provided, which employs a cyclone separator oil removal device and includes the following steps: Adjust the oil collection tank according to the liquid level in the cyclone pool so that the opening of the oil collection tank is level with the liquid level in the cyclone pool. Open the sealing mechanism to allow the oil to flow into the oil collection tank; After the oil collection is completed, close the sealing opening and closing mechanism; Compressed air is supplied into the oil collection tank to discharge the oil sludge from the oil outlet.

[0016] The beneficial effects of this invention are as follows: Based on the liquid level in the cyclone tank, the oil collection tank can be raised and lowered to make the opening of the oil collection tank level with the liquid level in the cyclone tank. This ensures that oil flows into the oil collection tank while very little water flows into it, thus ensuring that only oil is discharged from the oil collection tank and that no secondary oil-water separation process is required, thereby improving the oil removal efficiency. Meanwhile, compressed air is used as power to force the oil sludge in the oil collection tank to be discharged, which solves the problem that the oil sludge is too viscous to flow by itself, and avoids the problem of difficulty in negative pressure suction. It can also easily discharge the oil sludge from the vortex pool. Attached Figure Description

[0017] The invention will now be described in more detail with reference to embodiments and the accompanying drawings. Figure 1 A schematic diagram of the structure of the present invention is shown; Figure 2 This shows a schematic diagram of the structure of the oil collection tank in this invention; Figure 3 This shows an external schematic diagram of the oil collection tank and sealing opening and closing mechanism in this invention; In the accompanying drawings, the same parts use the same reference numerals. The drawings are not to scale.

[0018] Figure label: 1. Frame; 2. Electric linear module; 3. Connector; 4. Sealing opening and closing mechanism; 401. Bracket; 402. Linear drive mechanism; 5. Oil collection tank; 501. Oil storage tank; 502. Oil collection tray; 503. Claw body; 504. Sealing gasket; 505. Sealing cone; 506. Air inlet; 507. Mounting flange; 508. Oil outlet; 509. Support foot; 6. Liquid level sensor; 7. Main valve; 8. Pneumatic triplet; 9. Solenoid directional valve; 10. First electric valve; 11. Buffer tank; 12. Ball valve; 13. Second electric valve; 14. Cleaning fluid mixing tank; 1401. Cleaning fluid inlet; 15. Agitator; 16. Pressure sensor; 17. Third electric valve. Detailed Implementation

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] This invention provides an oil removal device for cyclone separators, suitable for automatic oil removal in large-scale cyclone separators in metallurgical and chemical industries, such as... Figure 1and Figure 2 As shown, the cyclone separator oil removal device includes: Electric linear module 2, the fixed end of which is vertically installed outside the vortex pool; The oil collection tank 5 has an air inlet 506 for supplying compressed air at its upper part and an oil outlet 508 for discharging oil at its lower part. A sealing opening and closing mechanism 4 is provided at the opening of the oil collection tank 5; Connector 3, one end of which is fixedly connected to the output end of the electric linear module 2, and the other end of which extends into the vortex pool and is fixedly connected to the oil collection tank 5; Liquid level sensor 6 is installed inside the vortex tank; The controller is electrically connected to the electric linear module 2, the sealing opening and closing mechanism 4, and the liquid level sensor 6.

[0021] Understandably, the oil collection tank 5 can be raised and lowered according to the liquid level in the cyclone pool so that the opening of the oil collection tank 5 is level with the liquid level in the cyclone pool. This ensures that oil flows into the oil collection tank 5 while very little water flows into it, thus ensuring that what is discharged from the oil collection tank 5 is oil and that no secondary oil-water separation process is required, which in turn helps to improve the oil removal efficiency. Meanwhile, compressed air is used as power to force the oil sludge in the oil collection tank 5 to be discharged, which solves the problem that the oil sludge is viscous and cannot flow by itself, and avoids the problem of difficulty in negative pressure suction. It can also easily discharge the oil sludge from the vortex pool.

[0022] It is also understandable that when compressed air is introduced into the air inlet 506, the oil sludge in the oil collection tank 5 can be discharged from the oil outlet 508.

[0023] It should be noted that the electric linear module 2 can be a servo motor driven linear module, with the servo motor electrically connected to the controller to achieve high-precision displacement control and a positioning accuracy of ±0.1mm; the fixed end of the linear module is fixedly connected to the frame 1, which is installed on a steel structure platform outside the vortex pool; the liquid level sensor 6 can be a pressure sensor, which is installed below the liquid level in the vortex pool to calculate the corresponding liquid level based on the pressure value measured by the pressure sensor; the controller can be a PCB board equipped with a C51 microcontroller.

[0024] It should be noted that both the air inlet 506 and the oil outlet 508 adopt G1 / 2. The pipe is threaded, and the outer diameter of the air pipe connected to the air inlet 506 can be Φ16mm.

[0025] In one embodiment, the oil collection tank 5 includes an oil storage tank 501, an oil collection plate 502 that is sealed and fixedly connected to the upper end of the oil storage tank 501, and a sealing cone 505 that is embedded in the lower part of the oil collection plate 502. A mounting flange 507 for fixing the connecting member 3 is provided on one side of the oil storage tank 501. The sealing opening and closing mechanism 4 includes a linear drive mechanism 402 that is electrically connected to the controller. The fixed end of the linear drive mechanism 402 is fixedly connected vertically above the oil collection tank 5. The output end of the linear drive mechanism 402 is vertically downward and fixedly connected to the sealing cone 505. A sealing gasket 504 is provided on the cone surface of the sealing cone 505 to seal and adhere to the upper inner wall of the oil collection plate 502 after rising.

[0026] Understandably, the oil storage tank 501 can collect and temporarily store oil stains; the sealing cone 505 can be raised and lowered under the action of the linear drive mechanism 402 so that the cone surface of the sealing cone 505 contacts or moves away from the upper inner wall surface of the oil collection tray 502, thereby achieving the sealing or opening function; specifically, when the oil collection tank 5 needs to be circulated with compressed air, the linear drive mechanism 402 can lift the sealing cone 505 so that the sealing gasket 504 on the cone surface of the sealing cone 505 fits against the upper inner wall surface of the oil collection tray 502.

[0027] It should be noted that the lower part of the sealing cone 505 is embedded inside the oil collection pan 502 so as to make full use of the expansion force of the compressed air in the oil storage tank 501 to provide the necessary clamping force for sealing, thereby eliminating the need for additional sealing power.

[0028] It should be noted that the sealing gasket 504 can be a sealing rubber gasket, and the diameter of the oil storage tank 501 can be 450mm and should be smaller than the width of the vortex pool groove.

[0029] In one embodiment, the upper end of the oil storage tank 501 and the lower end of the oil collection tray 502 are respectively provided with a first flange and a second flange that are detachably connected to each other. A sealing ring is coaxially provided between the first flange and the second flange to prevent air leakage between the oil storage tank 501 and the oil collection tray 502.

[0030] It should be noted that the first flange and the second flange can be connected by fasteners such as bolts.

[0031] In one embodiment, a bracket 401 is provided at the upper end of the second flange, and the fixed end of the linear drive mechanism 402 is fixedly connected to the bracket 401.

[0032] In one embodiment, the edge of the second flange is provided with several wire claws 503 along the circumferential direction to retrieve large-sized debris such as plastic bottles that cannot be put into the tank and are collected at the oil collection pan 502, so that they can be easily removed manually on a regular basis.

[0033] In one embodiment, the linear drive mechanism 402 includes a small cylinder with a cylinder diameter of 40 mm and a cylinder stroke of 35 mm, and an air inlet 506 is provided through the sealing cone 505.

[0034] It should be noted that the cylinder only raises and lowers the sealing cone 505 under no-pressure conditions. The actual sealing power comes from the compressed air itself to achieve self-sealing. The higher the pressure, the better the sealing effect.

[0035] In one embodiment, such as Figure 1-3 As shown, the cyclone separator includes a main valve 7, a first electric valve 10, a buffer tank 11, and a solenoid directional valve 9. One end of the main valve 7 is connected to the air supply system, and the two ends of the first electric valve 10 are respectively connected to the other end of the main valve 7 and the buffer tank 11. The buffer tank 11 is connected to the air inlet 506. The inlet of the electromagnetic directional valve 9 is connected to the other end of the main valve 7 through the pneumatic triplet 8, and the two working ports of the electromagnetic directional valve 9 are respectively connected to the rod chamber and the rodless chamber of the cylinder. The controller is electrically connected to the first electric valve 10 and the solenoid directional valve 9; Among them, the pneumatic triplet 8 consists of a filter, a pressure reducing valve, and an oil mist separator connected in series.

[0036] It should be noted that the pressure in the air supply system can be 4~6 Bar, and the capacity of the buffer tank 11 can be 30L; one path is connected to the cylinder through the main valve 7, the pneumatic triplet 8 and the solenoid directional valve 9, so as to operate the cylinder to extend and retract, thereby opening or sealing the opening of the oil collection tank 5; the other path is connected to the air inlet 506 through the safety valve, the first electric valve 10 and the buffer tank 11; during normal oil pumping, the buffer tank 11 is empty.

[0037] In one embodiment, the cyclone separator includes a ball valve 12, a second electric valve 13, a cleaning solution mixing tank 14, and a third electric valve 17. One end of the ball valve 12 is connected to the water supply system, and the other end of the ball valve 12 is connected to the cleaning solution mixing tank 14 through the second electric valve 13. The cleaning solution mixing tank 14 is provided with a cleaning solution inlet 1401 and a stirrer 15. A pressure sensor 16 is provided inside the cleaning solution mixing tank 14. The lower end of the cleaning solution mixing tank 14 is connected to the upper end of the buffer tank 11 through the third electric valve 17, and the lower part of the buffer tank 11 is connected to the air inlet 506. The controller is electrically connected to the second electric valve 13, the stirrer 15, the pressure sensor 16, and the third electric valve 17.

[0038] Understandably, to prevent the pipes from narrowing or becoming blocked due to residual oil drying on the pipe walls during the settling period, after the degreasing operation is completed, water and cleaning solution are added to the cleaning solution mixing tank 14 in proportion and stirred evenly. Then, the mixed solution flows into the buffer tank 11, and compressed air is used to pump the mixed solution into the oil collection tank and its connected pipes, thereby facilitating the cleaning of the pipes.

[0039] Understandably, when the oil discharge is completed and the oil collection tank 5 and the connected pipes need to stand for a long time, the third electric valve 17 can be activated to determine the volume of buffer solution to be discharged into the buffer tank 11 based on the pressure detected by the pressure sensor 16. Then, the third electric valve 17 is closed after the pre-set volume of the mixed liquid is discharged into the buffer tank 11.

[0040] It should be noted that the water supply system can be supplied with tap water, and the water supply system is connected to the buffer tank 11 via a manual ball valve 12, a second electric valve 13, a cleaning solution mixing tank 14, and a third electric valve 17.

[0041] In one embodiment, an oil outlet 508 is provided at the lower part of the oil storage tank 501, and a support foot 509 is provided at the lower end of the oil storage tank 501.

[0042] It is understandable that the oil outlet 508 is usually connected to a pipeline. This is to prevent damage to the oil outlet 508 or the corresponding pipeline when placing or transporting the oil collection tank 5.

[0043] It should be added that, in order to facilitate the maintenance of oil storage tank 501, a manhole or observation hole can be provided on the body of oil storage tank 501.

[0044] The present invention also provides a method for oil removal using a cyclone separator, which employs a cyclone separator oil removal device and includes the following steps: Prepare for equipment startup, equipment inspection, and cleaning solution preparation; According to the liquid level in the cyclone pool, raise and lower the oil collection tank 5 so that the opening of the oil collection tank 5 is level with the liquid level in the cyclone pool. Operate the reversing valve to open the sealing opening and closing mechanism 4 through the cylinder, so that the oil flows into the oil collection tank 5; After the set time is reached, the sealing opening and closing mechanism 4 is closed; Open the first electric valve 10 to introduce compressed air into the oil collection tank 5, so as to force the oil in the oil collection tank 5 to be discharged into the collection tank at the designated location; after the set time is reached, close the first electric valve 10; repeat this cycle several times until the oil in the vortex tank is completely discharged. Open the second electric valve 13 to add tap water to the cleaning solution mixing tank 14, and add cleaning solution through the cleaning solution inlet 1401 to form a mixing solution in a certain proportion. With the assistance of pressure sensor 16, the third electric valve 17 is opened to inject a certain amount of the mixture into buffer tank 11. Then open the first electric valve 10 to allow compressed air to pump the mixed hydraulic fluid in the buffer tank 11 into the oil collection tank 5, thereby cleaning the oil collection tank 5 and its connected pipes before discharging it into the corresponding collection tank.

[0045] In summary, the present invention adopts an automatic control method based on liquid level detection, which can ensure that the amount of oil discharged from the tank is mainly oil with very little water, thus eliminating the need for secondary oil-water separation and other processes, thereby improving the oil removal efficiency. This invention uses compressed air as power to force the oil sludge in the oil collection tank 5 to be discharged, which solves the problem that the oil sludge is viscous and cannot flow by itself, and avoids the problem of negative pressure suction. It can also easily discharge the oil sludge from the vortex pool. After the degreasing operation is completed, the invention has an automatic cleaning function, which can prevent the oil from drying and hardening during the standing period, thus avoiding narrowing or even blockage of the pipeline, and thus enabling long-term, stable and reliable operation. Because the present invention uses a structure in which the sealing cone 505 is embedded inside the oil collection pan 502, it can achieve the self-sealing function of compressed air. That is, it directly uses the expansion force of the compressed air in the oil storage tank 501 to provide the clamping force necessary for sealing, without the need to provide an additional large sealing power. The present invention has a simple and reliable structure and low cost.

[0046] In the description of this invention, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0047] While the invention has been described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the invention as defined by the appended claims. It should be understood that different dependent claims and features described herein can be combined in ways different from those described in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other described embodiments.

Claims

1. A cyclone separator for oil removal, characterized in that, include: Electric linear module (2), the fixed end of which is vertically set outside the vortex pool; An oil collection tank (5) is provided with an air inlet (506) for supplying compressed air at the upper part and an oil outlet (508) for discharging oil at the lower part. A sealing opening and closing mechanism (4) is provided at the opening of the oil collection tank (5); Connector (3), one end of which is fixedly connected to the output end of the electric linear module (2), and the other end of which extends into the vortex pool and is fixedly connected to the oil collection tank (5). A liquid level sensor (6) is installed inside the vortex pool; The controller is electrically connected to the electric linear module (2), the sealing opening and closing mechanism (4), and the liquid level sensor (6).

2. The cyclone separator for oil removal according to claim 1, characterized in that, The oil collection tank (5) includes a sealing cone (505), an oil storage tank (501) fixedly connected to the connector (3), and an oil collection plate (502) fixedly connected to the upper end of the oil storage tank (501). The sealing opening and closing mechanism (4) includes a linear drive mechanism (402) electrically connected to the controller. The fixed end of the linear drive mechanism (402) is fixedly connected vertically above the oil collection tank (5). The output end of the linear drive mechanism (402) is vertically downward and fixedly connected to the sealing cone (505). A sealing gasket (504) is provided on the cone surface of the sealing cone (505) to seal against the upper inner wall of the oil collection plate (502) after rising.

3. The cyclone separator for oil removal according to claim 2, characterized in that, The upper end of the oil storage tank (501) and the lower end of the oil collection tray (502) are respectively provided with a first flange and a second flange that are detachably connected to each other, and a sealing ring is coaxially provided between the first flange and the second flange.

4. The cyclone separator for oil removal according to claim 3, characterized in that, The upper end of the second flange is provided with a bracket (401), and the fixed end of the linear drive mechanism (402) is fixedly connected to the bracket (401).

5. The cyclone separator for oil removal according to claim 3, characterized in that, Several claws (503) are provided circumferentially at the edge of the second flange.

6. The cyclone separator for oil removal according to claim 2, characterized in that, The linear drive mechanism (402) includes a cylinder, and the air inlet (506) is provided through the sealing cone (505) inside and out.

7. The cyclone separator for oil removal according to claim 6, characterized in that, It includes a main valve (7), a first electric valve (10), a buffer tank (11) and a solenoid directional valve (9). One end of the main valve (7) is connected to the gas supply system, and the two ends of the first electric valve (10) are respectively connected to the other end of the main valve (7) and the buffer tank (11). The buffer tank (11) is connected to the air inlet (506). The inlet of the electromagnetic reversing valve (9) is connected to the other end of the main valve (7) through the pneumatic triplet (8), and the two working ports of the electromagnetic reversing valve (9) are respectively connected to the rod chamber and the rodless chamber of the cylinder; The controller is electrically connected to the first electric valve (10) and the solenoid directional valve (9).

8. The cyclone separator for oil removal according to claim 7, characterized in that, The system includes a ball valve (12), a second electric valve (13), a cleaning solution mixing tank (14), and a third electric valve (17). One end of the ball valve (12) is connected to the water supply system, and the other end of the ball valve (12) is connected to the cleaning solution mixing tank (14) through the second electric valve (13). The cleaning solution mixing tank (14) is equipped with a cleaning solution inlet (1401) and a stirrer (15). A pressure sensor (16) is installed inside the cleaning solution mixing tank (14). The lower end of the cleaning liquid mixing tank (14) is connected to the upper end of the buffer tank (11) through the third electric valve (17), and the lower part of the buffer tank (11) is connected to the air inlet (506). The controller is electrically connected to the second electric valve (13), the stirrer (15), the pressure sensor (16), and the third electric valve (17).

9. The cyclone separator for oil removal according to claim 2, characterized in that, The oil outlet (508) is provided at the lower part of the oil storage tank (501), and the lower end of the oil storage tank (501) is provided with a support foot (509).

10. A method for oil removal using a cyclone separator, characterized in that, The cyclone separator oil removal device according to any one of claims 1-9, the cyclone separator oil removal method includes the following steps: According to the liquid level in the vortex tank, raise and lower the oil collection tank (5) so that the opening of the oil collection tank (5) is level with the liquid level in the vortex tank; Open the sealing opening and closing mechanism (4) to allow the oil to flow into the oil collection tank (5); After the oil collection is completed, close the sealing opening and closing mechanism (4); Compressed air is supplied into the oil collection tank (5) to discharge the oil sludge inside the oil collection tank (5) from the oil outlet (508).

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