Emulsifier wastewater oil-water separation device

Abstract

The invention belongs to the technical field of wastewater treatment, and particularly relates to an emulsifier wastewater oil-water separation device which comprises a separation cylinder and a cylinder cover arranged at the top of the separation cylinder, and further comprises a lifting mechanism arranged between the cylinder wall of the separation cylinder and the side wall of the cylinder cover and capable of lifting the cylinder cover upwards; and the three stirring mechanisms are rotatably arranged on the inner wall of the bottom of the separation cylinder in a surrounding manner. Demulsification parameters are dynamically adapted by monitoring the properties of the wastewater in real time, so that the stirring strength can be accurately adjusted according to the emulsification difficulty of the wastewater in different areas, thorough demulsification of a lower-layer stubborn emulsification system and no damage of upper-layer coalescent oil drops are ensured, and the heating strength and the dosage of the demulsifier can be regulated and controlled as required by combining water quality data; the device realizes synergistic interaction of heating, stirring and the demulsifier, avoids energy waste and excessive consumption of chemicals, prevents the problem of secondary emulsification, reduces dependence on manual intervention, and adapts to complex and changeable wastewater treatment scenes.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment technology, and in particular relates to an oil-water separation device for emulsifier wastewater. Background Technology

[0002] In industrial production, emulsifier wastewater is widely generated from various industries such as machining, petrochemicals, cosmetics manufacturing, and food processing. This type of wastewater contains a large amount of emulsifiers, surfactants, oils, organic pollutants, and suspended particles, forming a highly stable emulsion system. If it is discharged directly without effective treatment, it will cause serious harm to the ecological environment. Therefore, it is necessary to treat emulsifier wastewater by oil-water separation, such as the emulsifier wastewater oil-water separation device disclosed in announcement number CN213950881U.

[0003] However, the composition of emulsified wastewater is significantly complex and volatile. Traditional oil-water separation devices often rely on fixed settings or manual adjustments for key parameters such as stirring intensity, demulsifier dosage, and heating temperature when dealing with this type of wastewater. They cannot dynamically adapt to the real-time properties of the wastewater. For example, when the wastewater is highly emulsified, a fixed stirring intensity may not be sufficient to break the dense emulsion film, resulting in incomplete demulsification. When the wastewater composition is relatively simple, excessive demulsifier dosage not only wastes reagents and increases treatment costs but may also cause secondary pollution. Fixed heating temperature settings may lead to energy waste when the wastewater viscosity is low, or insufficient temperature may affect separation efficiency when the viscosity is high. This lack of adaptive adjustment makes it difficult for traditional devices to maintain optimal treatment results in complex and variable wastewater treatment scenarios.

[0004] Therefore, an oil-water separation device for emulsifier wastewater is proposed. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing an oil-water separation device for emulsifier wastewater.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an oil-water separation device for emulsifier wastewater, comprising a separation cylinder and a cylinder cover disposed on the top of the separation cylinder, and further comprising:

[0007] A lifting mechanism is provided between the cylinder wall of the separating cylinder and the side wall of the cylinder cover, and the lifting mechanism is capable of lifting the cylinder cover upward;

[0008] Three stirring mechanisms are arranged in a circular rotation on the bottom inner wall of the separation cylinder to break the emulsion of the emulsified wastewater inside the separation cylinder;

[0009] A drive mechanism is disposed on the top and bottom of the cylinder cover, and the drive mechanism is connected to the three stirring mechanisms in a transmission manner;

[0010] An annular electric heating tube is fixedly installed on the inner wall of the separation cylinder, and the annular electric heating tube is used to heat the wastewater inside the separation cylinder. All three stirring mechanisms are located inside the annular electric heating tube.

[0011] A dosing mechanism is provided on the top of the cylinder cover, and the dosing mechanism is capable of adding demulsifier into the interior of the separation cylinder;

[0012] A water quality testing mechanism is located at the bottom center of the cylinder cover, and the testing end of the water quality testing mechanism extends downward to the middle of the separation cylinder;

[0013] The PLC controller is fixedly installed on the wall of the separation cylinder. The lifting mechanism, driving mechanism, annular electric heating tube, dosing mechanism and water quality detection mechanism are all electrically connected to the PLC controller.

[0014] Preferably, the lifting mechanism includes first fixed seats symmetrically fixed on both sides of the separating cylinder, second fixed seats fixed on both sides of the cylinder cover, and a cylinder fixed between the two first fixed seats and the two second fixed seats.

[0015] Preferably, the stirring mechanism includes a stirring shaft rotatably mounted on the inner wall of the bottom of the separation cylinder, the stirring shaft having a plurality of uniformly distributed stirring blades fixedly mounted on its shaft wall from bottom to top, and a transmission gear fixedly mounted on the upper end of the stirring shaft.

[0016] Preferably, the stirring blade adopts a three-blade structure, and the blade length values ​​of the plurality of stirring blades are set in descending order from bottom to top.

[0017] Preferably, the driving mechanism includes a motor fixedly mounted on one side of the top of the cylinder cover, the output shaft of the motor extending to the bottom of the cylinder cover and fixedly mounted with a driving gear, a fixing ring fixedly mounted at the bottom of the cylinder cover, and a transmission gear ring rotatably mounted on the inner wall of the fixing ring via a bearing, the driving gear meshing with the outer side of the transmission gear ring and the transmission gear meshing with the inner side of the transmission gear ring.

[0018] Preferably, the dispensing mechanism includes a storage cylinder fixedly disposed at the center of the top of the cylinder cover, a partition plate fixedly disposed inside the storage cylinder, a discharge pipe fixedly disposed at the center of the lower surface of the partition plate, a metering valve fixedly disposed on the wall of the discharge pipe, a dispensing hole opened at the center of the cylinder cover, a dispersing block disposed inside the dispensing hole, a plurality of evenly distributed fixing rods fixedly disposed between the side wall of the dispersing block and the side wall of the dispensing hole, and a dispersing mechanism disposed at the bottom of the cylinder cover and below the dispensing hole.

[0019] Preferably, the dispersing mechanism includes three connecting rods fixedly disposed on the inner sidewall of the transmission gear ring. Each of the three connecting rods has an inclined dispersing hopper fixedly disposed at one end away from the transmission gear ring. The bottom of each of the three dispersing hoppers has multiple evenly distributed dispersing holes, and the upwardly inclined end of each of the three dispersing hoppers extends to the bottom of the feeding hole.

[0020] Preferably, the water quality testing mechanism includes a testing rod fixedly disposed at the center of the bottom of the cylinder cover, a testing disk fixedly disposed at the lower end of the testing rod, and an infrared oil sensor, a viscometer and a Zeta potentiometer fixedly disposed on the lower surface of the testing disk.

[0021] Preferably, a drain pipe is fixedly provided at the bottom of the separator wall, and a switch valve is fixedly provided on the wall of the drain pipe. An oil extraction port is fixedly provided on one side of the top of the separator cover, and a transparent observation window is provided on the vertical wall of the separator.

[0022] Compared with existing technologies, the advantages of this invention are as follows:

[0023] 1. Through the set-up stirring mechanism and water quality detection mechanism, the water quality detection mechanism integrates an infrared oil-containing sensor, viscometer, and Zeta potential meter to capture real-time data on the oil content, viscosity, and stability of the emulsion system in the wastewater, providing a precise basis for the control of the stirring mechanism. At the same time, the stirring mechanism adopts a differentiated design with "blade length decreasing sequentially from bottom to top", which, together with the PLC controller, adjusts the stirring intensity according to the detection data. This ensures the demulsification effect of the dense emulsion system in the lower layer of the separation cylinder, while avoiding secondary emulsification caused by excessive shearing of the already aggregated oil droplets in the upper layer. This makes the demulsification process more in line with the actual working conditions of the wastewater and improves the thoroughness of oil-water separation.

[0024] 2. Through the installation of a ring-shaped electric heating tube, the heating power is precisely adjusted by the PLC controller based on data feedback from the water quality testing agency. This is used to specifically reduce the viscosity of wastewater and weaken the activity of emulsifiers, creating favorable conditions for oil droplet coalescence and demulsifier reaction. At the same time, the heating and stirring mechanisms work together. Stirring can quickly transfer heat to the entire wastewater system, avoiding local overheating or uneven temperature. Heating reduces viscosity and reduces stirring resistance, allowing the shear force generated by stirring to act more efficiently on the emulsion film, significantly improving demulsification efficiency and stability.

[0025] 3. Through the set dosing mechanism, the opening and closing degree of the metering valve is precisely adjusted by the PLC controller according to the water quality test data to realize the dosing of demulsifier as needed; the internal tip dispersion block and the rotating dispersion hopper work together to evenly disperse the demulsifier into the wastewater system, avoiding uneven local concentration; at the same time, the demulsifier dosing, stirring and heating work together, stirring accelerates the diffusion of demulsifier, heating increases the reaction rate of demulsifier, and the three together promote the full contact and reaction between demulsifier and emulsion film, which not only reduces the waste of demulsifier, but also further enhances the demulsification effect, ensuring the high efficiency and economy of oil-water separation. Attached Figure Description

[0026] Figure 1 This is a first-view perspective perspective view of an emulsifier wastewater oil-water separation device provided by the present invention;

[0027] Figure 2 This is a second-view perspective perspective view of an emulsifier wastewater oil-water separation device provided by the present invention;

[0028] Figure 3 This is a three-dimensional view of the separation cylinder after being cut open in an emulsifier wastewater oil-water separation device provided by the present invention;

[0029] Figure 4 This is a perspective view of the dosing mechanism on the top of the cylinder cover in an emulsifier wastewater oil-water separation device provided by the present invention;

[0030] Figure 5 This is a perspective view of the cylinder cover of an emulsifier wastewater oil-water separation device provided by the present invention;

[0031] Figure 6 This is a perspective view of the water quality testing mechanism in an emulsifier wastewater oil-water separation device provided by the present invention.

[0032] In the diagram: 1. Separation cylinder, 2. Cylinder cover, 3. Lifting mechanism, 31. First fixed seat, 32. Second fixed seat, 33. Cylinder, 4. Stirring mechanism, 41. Stirring shaft, 42. Stirring blade, 43. Transmission gear, 5. Drive mechanism, 51. Motor, 52. Drive gear, 53. Fixed ring, 54. Transmission gear ring, 6. Annular electric heating tube, 7. Dosing mechanism, 71. Storage cylinder, 72. Divider plate, 73. Discharge pipe, 74. Metering valve, 75. Dosing hole, 76. Dispersion block, 77. Fixed rod, 78. Dispersion mechanism, 781. Connecting rod, 782. Dispersion hopper, 783. Dispersion hole, 8. Water quality testing mechanism, 81. Detection rod, 82. Detection disc, 83. Infrared oil sensor, 84. Viscometer, 85. Zeta potentiometer, 9. PLC controller, 10. Drain pipe, 11. Switch valve, 12. Oil extraction port, 13. Transparent observation window. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0034] like Figures 1-6 As shown, an oil-water separation device for emulsifier wastewater includes a separation cylinder 1 and a cylinder cover 2 disposed on the top of the separation cylinder 1. A drain pipe 10 is fixedly provided at the bottom of the cylinder wall of the separation cylinder 1, and a switch valve 11 is fixedly provided on the pipe wall of the drain pipe 10. An oil extraction port 12 is fixedly provided on one side of the top of the cylinder cover 2, through which an oil extraction pipe can be inserted into the interior of the separation cylinder 1. A transparent observation window 13 is provided vertically on the cylinder wall of the separation cylinder 1, through which the oil-water boundary position can be clearly seen. The device also includes:

[0035] The lifting mechanism 3 is located between the wall of the separating cylinder 1 and the side wall of the cylinder cover 2, and the lifting mechanism 3 can lift the cylinder cover 2 upward. The lifting mechanism 3 includes a first fixed seat 31 symmetrically fixed on both sides of the separating cylinder 1, and a second fixed seat 32 fixed on both sides of the cylinder cover 2. A cylinder 33 is fixed between the two first fixed seats 31 and the two second fixed seats 32. The two cylinders 33 extend or retract synchronously, which can lift the cylinder cover 2 upward or lower the cylinder cover 2 to complete the opening or sealing of the separating cylinder 1.

[0036] Three stirring mechanisms 4 are arranged in a circular rotation on the bottom inner wall of the separation cylinder 1 to demulsify the emulsified wastewater inside the separation cylinder 1. The stirring mechanism 4 includes a stirring shaft 41 rotatably arranged on the bottom inner wall of the separation cylinder 1. Multiple evenly distributed stirring blades 42 are fixedly arranged on the shaft wall of the stirring shaft 41 from bottom to top. A transmission gear 43 is fixedly arranged at the upper end of the stirring shaft 41. The stirring blades 42 adopt a three-blade structure. The blade length of the multiple stirring blades 42 is arranged to decrease from bottom to top, so that the demulsification intensity of the wastewater gradually decreases from bottom to top, ensuring that the lower layer is thoroughly demulsified and preventing secondary emulsification in the upper layer.

[0037] The drive mechanism 5 is located on the top and bottom of the cylinder cover 2 and is connected to the three stirring mechanisms 4. The drive mechanism 5 includes a motor 51 fixedly mounted on one side of the top of the cylinder cover 2. The output shaft of the motor 51 extends to the bottom of the cylinder cover 2 and is fixedly mounted with a drive gear 52. A fixing ring 53 is fixedly mounted on the bottom of the cylinder cover 2. A transmission gear ring 54 is rotatably mounted on the inner wall of the fixing ring 53 via a bearing. The drive gear 52 meshes with the outer side of the transmission gear ring 54, and the transmission gear 43 meshes with the inner side of the transmission gear ring 54. The transmission gear ring 54 has teeth on both its inner and outer sides to ensure that the drive gear 52 rotates and drives the transmission gear ring 54 to rotate. At the same time, the transmission gear ring 54 can drive the transmission gear 43 to rotate.

[0038] The annular electric heating tube 6 is fixedly installed on the inner wall of the separation cylinder 1, and the annular electric heating tube 6 is used to heat the wastewater inside the separation cylinder 1. The three stirring mechanisms 4 are all located inside the annular electric heating tube 6. The tube wall of the annular electric heating tube 6 is treated by magnetron sputtering coating technology to improve its ability to resist pollution and prevent scaling.

[0039] A dosing mechanism 7 is located on the top of the cylinder cover 2 and is capable of adding demulsifier into the separation cylinder 1. The dosing mechanism 7 includes a storage cylinder 71 fixedly located at the center of the top of the cylinder cover 2. The top of the storage cylinder 71 is threaded with a feeding cap, which can be opened to add demulsifier into the storage cylinder 71. A partition plate 72 is fixedly installed inside the storage cylinder 71. The upper surface of the partition plate 72 is a demulsifier storage area. A discharge pipe 73 is fixedly installed at the center of the lower surface of the partition plate 72. A metering valve 74 is fixedly installed on the wall of the discharge pipe 73. A dosing hole 75 is opened at the center of the cylinder cover 2, and a dispersion block is installed inside the dosing hole 75. 76. The top of the dispersing block 76 is a pointed structure. Multiple evenly distributed fixing rods 77 are fixed between the side wall of the dispersing block 76 and the side wall of the injection hole 75. A dispersing mechanism 78 is provided at the bottom of the cylinder cover 2 and below the injection hole 75. The dispersing mechanism 78 includes three connecting rods 781 fixedly installed on the inner side wall of the transmission gear ring 54. An inclined dispersing bucket 782 is fixedly installed at the end of each of the three connecting rods 781 away from the transmission gear ring 54. Multiple evenly distributed dispersing holes 783 are opened at the bottom of each of the three dispersing buckets 782, and the upward inclined end of each of the three dispersing buckets 782 extends to the bottom of the injection hole 75.

[0040] The water quality testing mechanism 8 is located at the bottom center of the cylinder cover 2, and the testing end of the water quality testing mechanism 8 extends downward to the middle of the separation cylinder 1. The water quality testing mechanism 8 includes a testing rod 81 fixedly installed at the bottom center of the cylinder cover 2. A testing disk 82 is fixedly installed at the lower end of the testing rod 81. An infrared oil sensor 83, a viscometer 84, and a Zeta potentiometer 85 are fixedly installed on the lower surface of the testing disk 82. After completing one oil-water separation, the staff needs to clean the infrared oil sensor 83, the viscometer 84, and the Zeta potentiometer 85 to avoid wastewater pollution affecting the use effect.

[0041] The PLC controller 9 is fixedly installed on the wall of the separation cylinder 1. The lifting mechanism 3, the drive mechanism 5, the annular electric heating tube 6, the dosing mechanism 7, and the water quality detection mechanism 8 are all electrically connected to the PLC controller 9.

[0042] The operating principle of this invention is described as follows: The operator sends a start command through the PLC controller 9, which drives the cylinders 33 on both sides to extend synchronously (this is achieved through the pulse synchronization control module built into the PLC controller 9. The PLC controller 9 outputs control signals with the same phase to the electromagnetic reversing valves of the two cylinders 33. At the same time, the cylinders 33's own stroke limit sensors provide real-time feedback on the extension and retraction positions to ensure that the extension rate and stroke of the two cylinders are synchronized). The two cylinders 33 smoothly lift the cylinder cover 2 upward, so that the cylinder cover 2 is completely separated from the top of the separation cylinder 1, and the top opening of the separation cylinder 1 is completely open. Then, the emulsified wastewater to be treated is continuously fed into the separation cylinder 1 until the wastewater level is higher than the installation height of the annular electric heating tube 6. The wastewater feeding is then stopped, preparing for the subsequent oil-water separation operation.

[0043] After the wastewater injection is completed, the staff sends a closing command through the PLC controller 9, controlling the two cylinders 33 on both sides to retract synchronously. The two cylinders 33 smoothly drive the cylinder cover 2 to move vertically downward, fitting against the top opening of the separation cylinder 1 and achieving a seal. At this time, the transmission gear ring 54 at the bottom of the cylinder cover 2 will mesh with the three transmission gears 43 inside the separation cylinder 1 (the staff has pre-aligned the tooth positions of the transmission gear ring 54 with the tooth positions of the three transmission gears 43). At the same time, the detection rod 81 at the bottom of the cylinder cover 2 moves downward, and the detection disc 82 at its lower end is completely immersed in the wastewater. The infrared oil content sensor 83, viscometer 84, and Zeta potentiometer 85 integrated on the detection disc 82 start working synchronously.

[0044] Among them, the infrared oil sensor 83 detects the oil content in the wastewater in real time and transmits the data to the PLC controller 9, providing the core basis for the system to preset the demulsifier dosage and the basic heating temperature of the annular electric heating tube 6;

[0045] Viscometer 84 continuously monitors the real-time viscosity of wastewater. After the data is fed back to PLC controller 9, it is used to dynamically adjust the heating power of the annular electric heating tube 6. At the same time, it adjusts the stirring intensity of stirring mechanism 4 to ensure that the viscosity of wastewater is reduced through the synergistic effect of temperature and stirring, creating favorable conditions for demulsifier diffusion and oil droplet coalescence.

[0046] The Zeta potentiometer 85 captures the stability changes of the emulsion system in real time, and the data is synchronized to the PLC controller 9. It complements the oil content and viscosity data, further optimizing the amount of demulsifier added and the stirring intensity, avoiding secondary emulsification problems caused by incomplete demulsification or excessive stirring, and ensuring the high efficiency and stability of the entire demulsification and oil-water separation process.

[0047] The infrared oil-containing sensor 83, viscometer 84, and Zeta potentiometer 85 transmit the collected detection values ​​to the PLC controller 9 in real time. The PLC controller 9 then precisely controls the power of the motor 51, the power of the annular electric heating element 6, and the opening degree of the metering valve 74 based on the data. When the motor 51 operates, it drives the drive gear 52 to rotate. The drive gear 52 meshes with the transmission gear ring 54, causing it to rotate synchronously. The transmission gear ring 54, in turn, drives the three transmission gears 43 meshing with it to move synchronously. The three transmission gears 43 respectively drive the stirring shaft 41 and the stirring blades 42 on the shaft wall to rotate, thus stirring and breaking down the wastewater in the separation cylinder 1. In the emulsification process, the multiple stirring blades 42 on the stirring shaft 41 adopt a design where the blade length decreases sequentially from bottom to top. The reason for this design is that the lower layer of wastewater in the separation cylinder 1 is affected by gravity and sediment, resulting in a denser emulsion system and greater difficulty in demulsification. Longer stirring blades 42 are needed to generate stronger shear force and propulsion effect to effectively break the composite emulsion membrane. Meanwhile, the upper layer of wastewater emulsion membrane is relatively simple, and the already aggregated oil droplets need to be prevented from being broken by strong shear force. Shorter stirring blades 42 can create gentle disturbance, ultimately achieving a gradual decrease in the demulsification intensity of the wastewater from bottom to top. This ensures thorough demulsification of the lower layer while preventing secondary emulsification of the upper layer.

[0048] The annular heating tube 6 starts working according to the power preset by the PLC to heat the wastewater inside the separation cylinder 1. Heating can reduce the viscosity of the wastewater, weaken the activity of emulsifier molecules, reduce the adsorption resistance between oil droplets, and create favorable conditions for oil droplet collision and aggregation. At the same time, it can also accelerate the reaction rate between the subsequent demulsifier and the emulsion film, and improve the demulsification efficiency. The combination of heating and stirring demulsification achieves synergistic effect: stirring can quickly transfer the heat generated by heating to the entire wastewater system, avoid local overheating or uneven temperature, and ensure that the wastewater in all areas can be demulsified at a suitable temperature. After heating reduces the viscosity, it can also reduce the stirring resistance, allowing the shear force generated by stirring to act more efficiently on the emulsion film, further improving the demulsification effect.

[0049] Metering valve 74 opens according to the set opening degree. The demulsifier on the upper surface of the partition plate 72 inside the storage cylinder 71 is discharged downward through the discharge pipe 73. The discharged demulsifier automatically falls on the top of the dispersion block 76 in the addition hole 75. The top of the dispersion block 76 adopts a pointed structure design, which not only prevents the demulsifier from accumulating at the top, but also uses the guiding effect of the pointed tip to evenly disperse the demulsifier in all directions. Subsequently, part of the demulsifier falls into the three dispersion hoppers 782 below the addition hole 75, and the other part falls directly onto the wastewater surface of the separation cylinder 1 directly below the addition hole 75. The dispersion hoppers 782 are inclined and have multiple openings at the bottom. The diffuser 783 can disperse the received demulsifier to a wide range outwards. At the same time, when the transmission gear ring 54 rotates, it will drive the three connecting rods 781 on the inner wall to rotate together. Since the connecting rods 781 are fixedly connected to the dispersion hopper 782, the dispersion hopper 782 will rotate, and the demulsifier will be evenly sprinkled on the surface of the wastewater. After the demulsifier falls on the surface of the wastewater, it will cooperate with the stirring mechanism 4 to allow the demulsifier to quickly diffuse to the entire wastewater system with the stirring flow field. This avoids the waste caused by excessively high local concentration of demulsifier or incomplete demulsification caused by excessively low local concentration. It ensures that the demulsifier and wastewater are fully contacted and reacted, which greatly improves the demulsification efficiency and oil-water separation effect.

[0050] During the demulsification process, the Zeta potential meter 85 continuously monitors the changes in the Zeta potential of the wastewater in real time and transmits the dynamic detection data synchronously to the PLC controller 9. The fluctuation of the Zeta potential directly reflects the change in the stability of the emulsion system. As the demulsification reaction progresses, the emulsion film is gradually destroyed, the surface charge of the oil droplets is continuously neutralized, and the Zeta potential gradually approaches the stable range. Based on this dynamic change trend, the PLC controller 9 accurately reduces the power of the motor 51, the power of the annular heating tube 6, and the opening degree of the metering valve 74. It is not necessary to maintain the initial high-intensity stirring, high-power heating, and large dose of demulsifier. Timely reduction of the power of each component and the opening degree of the metering valve 74 can effectively avoid energy waste and excessive consumption of demulsifier, greatly improving the economy of the treatment process. At the same time, it can prevent excessive stirring from causing the already aggregated oil droplets to be re-dispersed and forming secondary emulsion, avoid the disturbance of the oil-water separation interface caused by excessive temperature, and avoid the formation of a new stable system caused by excessive demulsifier, ensuring that the demulsification process is always in a highly efficient and controllable state, and ultimately ensuring the thoroughness and stability of oil-water separation.

[0051] As the demulsification process continues, the oil droplets in the wastewater continuously aggregate and grow larger under the synergistic effect of the demulsifier, stirring, and heating. The oil-water separation effect gradually becomes apparent, eventually forming a clear stratified interface. The less dense oil layer floats on top, while the denser water layer sinks to the bottom. At this point, the operator can open the oil extraction port 12 on the side wall of the separation cylinder 1 and slowly insert the external oil extraction pipe into the separation cylinder 1 through this port. With the help of the transparent observation window 13 set on the separation cylinder 1, the operator can directly observe the specific location of the oil-water boundary line and then accurately adjust the insertion depth of the oil extraction pipe to ensure that the lower end of the oil extraction pipe is precisely aligned with the oil-water boundary line. Subsequently, the external oil extraction device is started to selectively extract the upper oil layer for subsequent collection and processing. After all the oil layer has been extracted, the operator opens the switch valve 11 on the drain pipe 10, and the remaining water layer inside the separation cylinder 1 will flow out naturally along the drain pipe 10, completing the entire oil-water separation process.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An oil-water separation device for emulsifier wastewater, comprising a separation cylinder (1) and a cylinder cover (2) disposed on the top of the separation cylinder (1), characterized in that, Also includes: The lifting mechanism (3) is located between the cylinder wall of the separating cylinder (1) and the side wall of the cylinder cover (2), and the lifting mechanism (3) can lift the cylinder cover (2) upward; Three stirring mechanisms (4) are arranged in a circular rotation on the bottom inner wall of the separation cylinder (1) to demulsify the emulsified wastewater inside the separation cylinder (1); The drive mechanism (5) is located on the top and bottom of the cylinder cover (2), and the drive mechanism (5) is connected to the three stirring mechanisms (4) in a transmission manner; An annular electric heating tube (6) is fixedly installed on the inner wall of the separation cylinder (1), and the annular electric heating tube (6) is used to heat the wastewater inside the separation cylinder (1). All three stirring mechanisms (4) are located inside the annular electric heating tube (6). The dosing mechanism (7) is located on the top of the cylinder cover (2), and the dosing mechanism (7) is capable of adding demulsifier into the interior of the separation cylinder (1); A water quality testing mechanism (8) is located at the bottom center of the cylinder cover (2), and the testing end of the water quality testing mechanism (8) extends downward to the middle of the separation cylinder (1); The PLC controller (9) is fixedly installed on the wall of the separation cylinder (1). The lifting mechanism (3), the driving mechanism (5), the annular electric heating tube (6), the dosing mechanism (7) and the water quality detection mechanism (8) are all electrically connected to the PLC controller (9).

2. The emulsifier wastewater oil-water separation device according to claim 1, characterized in that, The lifting mechanism (3) includes a first fixed seat (31) symmetrically fixed on both sides of the separating cylinder (1), and a second fixed seat (32) fixed on both sides of the cylinder cover (2). A cylinder (33) is fixed between the two first fixed seats (31) and the two second fixed seats (32).

3. The emulsifier wastewater oil-water separation device according to claim 1, characterized in that, The stirring mechanism (4) includes a stirring shaft (41) rotatably mounted on the inner wall of the bottom of the separation cylinder (1). The shaft wall of the stirring shaft (41) is fixed with a plurality of uniformly distributed stirring blades (42) from bottom to top. The upper end of the stirring shaft (41) is fixed with a transmission gear (43).

4. The emulsifier wastewater oil-water separation device according to claim 3, characterized in that, The stirring blade (42) adopts a three-blade structure, and the blade length values ​​of the multiple stirring blades (42) are set in descending order from bottom to top.

5. The emulsifier wastewater oil-water separation device according to claim 3, characterized in that, The drive mechanism (5) includes a motor (51) fixedly mounted on one side of the top of the cylindrical cover (2). The output shaft of the motor (51) extends to the bottom of the cylindrical cover (2) and is fixedly mounted with a drive gear (52). A fixing ring (53) is fixedly mounted at the bottom of the cylindrical cover (2). A transmission gear ring (54) is rotatably mounted on the inner wall of the fixing ring (53) via a bearing. The drive gear (52) meshes with the outer side of the transmission gear ring (54), and the transmission gear (43) meshes with the inner side of the transmission gear ring (54).

6. The emulsifier wastewater oil-water separation device according to claim 5, characterized in that, The feeding mechanism (7) includes a storage cylinder (71) fixedly disposed at the center of the top of the cylinder cover (2). A partition plate (72) is fixedly disposed inside the storage cylinder (71). A discharge pipe (73) is fixedly disposed at the center of the lower surface of the partition plate (72). A metering valve (74) is fixedly disposed on the wall of the discharge pipe (73). A feeding hole (75) is opened at the center of the cylinder cover (2). A dispersing block (76) is disposed inside the feeding hole (75). A plurality of evenly distributed fixing rods (77) are fixedly disposed between the side wall of the dispersing block (76) and the side wall of the feeding hole (75). A dispersing mechanism (78) is disposed at the bottom of the cylinder cover (2) and below the feeding hole (75).

7. The emulsifier wastewater oil-water separation device according to claim 6, characterized in that, The dispersing mechanism (78) includes three connecting rods (781) fixedly disposed on the inner side wall of the transmission gear ring (54). The ends of the three connecting rods (781) away from the transmission gear ring (54) are all fixedly provided with inclined dispersing buckets (782). The bottom of the three dispersing buckets (782) is provided with a plurality of evenly distributed dispersing holes (783), and the upward inclined ends of the three dispersing buckets (782) extend to the bottom of the feeding hole (75).

8. The emulsifier wastewater oil-water separation device according to claim 1, characterized in that, The water quality testing mechanism (8) includes a testing rod (81) fixedly installed at the center of the bottom of the cylinder cover (2). The lower end of the testing rod (81) is fixedly provided with a testing disk (82). The lower surface of the testing disk (82) is fixedly provided with an infrared oil sensor (83), a viscometer (84) and a Zeta potentiometer (85).

9. The emulsifier wastewater oil-water separation device according to claim 1, characterized in that, The bottom of the separator (1) is fixedly provided with a drain pipe (10), and the wall of the drain pipe (10) is fixedly provided with a switch valve (11). The top side of the cover (2) is fixedly provided with an oil extraction port (12). The wall of the separator (1) is provided with a transparent observation window (13) in the vertical direction.

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