Oil surface self-adaptive tracking type intelligent oil-water separator

Abstract

This invention relates to the field of oil-water separation, specifically to an oil level adaptive tracking intelligent oil-water separator. It includes a tank; an oil-water separation mechanism comprising a fixed guide rod vertically disposed within the tank; a floating platform coaxially sleeved on the fixed guide rod; and an oil guiding component disposed inside the floating platform. The oil guiding component includes an upper ring plate and a lower ring plate. The lower ring plate has an annular oil collecting groove at its top and an oil drain port at its bottom. When the lower ring plate moves downward away from the upper ring plate, an annular oil collecting channel is formed between the lower and upper ring plates. A linear actuator is mounted on the floating platform. This invention tracks the oil-water interface via the floating platform. Once the liquid level stabilizes, it is locked by a positioning and clamping structure. The linear actuator opens the annular oil collecting channel between the lower and upper ring plates, allowing the floating oil to be discharged through the annular oil collecting groove and the oil drain port, achieving fully automatic, high-precision oil-water separation.

Description

Technical Field

[0001] This invention relates to the field of oil-water separation, specifically to an oil level adaptive tracking intelligent oil-water separator. Background Technology

[0002] Oil-water separation is a crucial step in wastewater treatment, with its core objective being the efficient and clean recovery of floating oil from oily wastewater. Currently, widely used oil-water separation equipment primarily relies on the principle of gravity sedimentation, collecting the upper layer of floating oil mechanically after the water has settled and separated into layers, such as using fixed-height oil skimmers or overflow oil collection tanks.

[0003] However, due to frequent fluctuations in factors such as influent flow rate, oil concentration, and temperature, the oil layer thickness often changes dynamically. Existing fixed oil recovery mechanisms cannot automatically adjust their position according to the rise and fall of the oil level, and cannot accurately track the actual oil-water interface. This results in extremely low oil recovery efficiency when the oil layer is too thin, and easy mixing of water when the oil layer is too thick. Secondly, the lack of real-time sensing capability of the recovered liquid composition makes it very easy to carry away the lower aqueous phase, severely reducing the purity of the recovered oil.

[0004] Therefore, there is a need for an oil-water separator with adaptive tracking to solve the problems of low oil collection efficiency and high water content in existing equipment due to the fixed oil collection position and inability to dynamically track the oil-water interface. Summary of the Invention

[0005] To address the problems existing in the prior art, an oil-water separator with adaptive tracking is provided. The oil-water interface is tracked by a floating platform. After the liquid level stabilizes, it is locked by a positioning and clamping structure. The linear actuator opens the annular oil collection channel between the lower and upper ring plates. The floating oil is discharged from the oil outlet through the annular oil collection groove, realizing fully automatic and high-precision oil-water separation.

[0006] To address the problems of existing technologies, this invention provides an oil-water separator with adaptive tracking, comprising a tank with an inlet, a dosing port, and an outlet. The bottom of the tank is equipped with an aeration device and a rotating impeller. The separator also includes an oil-water separation mechanism located in the upper half of the tank. This mechanism includes a fixed guide rod vertically mounted within the tank. An end cap is located at the top of the tank. The upper end of the fixed guide rod is fixedly connected to the end cap, and its lower end extends axially. A floating platform, in a ring shape, is coaxially sleeved on the fixed guide rod and can slide axially along it. This platform is used to track the oil-water interface in real time as the liquid level rises. An oil guiding component is also included. Inside the floating platform, an oil guiding component is used to guide and collect surface oil. The oil guiding component includes an upper ring plate and a lower ring plate. The upper ring plate is fixedly installed at the bottom of the floating platform, and its bottom surface is parallel to the bottom surface of the floating platform. The lower ring plate is installed at the bottom of the upper ring plate and can move axially relative to the upper ring plate. The top of the lower ring plate has an annular oil collecting groove, and the bottom has an oil drain port communicating with the annular oil collecting groove. When the lower ring plate moves downward away from the upper ring plate, an annular oil collecting channel is formed between the lower ring plate and the upper ring plate. The floating platform is equipped with a linear actuator for driving the lower ring plate to move axially to open and close the annular oil collecting channel.

[0007] Preferably, the top of the floating platform is fixedly provided with a sliding sleeve coaxial with the fixed guide rod, and the upper half of the fixed guide rod is provided with a positioning and clamping structure that cooperates with the sliding sleeve, which is used to lock the floating platform after the liquid surface stabilizes, forming a fixed working platform.

[0008] Preferably, the lower end of the fixed guide rod is provided with a lower anti-detachment ring, and the lower anti-detachment ring is circumferentially fitted with a buffer washer to limit the downward extreme position of the floating platform and absorb impact.

[0009] Preferably, the positioning and clamping structure includes an electromagnetic lock core and a plurality of metal balls. The electromagnetic lock core is fixedly sleeved on a fixed guide rod, and the plurality of metal balls are embedded in the inner wall of the sliding sleeve and roll in cooperation with the outer peripheral surface of the electromagnetic lock core.

[0010] Preferably, the electromagnetic lock core has a columnar structure, and its outer circumferential surface has a groove along the axial direction to cooperate with the rolling of the metal balls.

[0011] Preferably, the end cap is symmetrically provided with two winding mechanisms, each of which is connected to a lifting rope. The lower end of the lifting rope is fixedly connected to the floating platform. The lifting rope and the positioning and clamping structure cooperate to form a composite locking mechanism.

[0012] Preferably, the lower ring plate has a sleeve portion that is coaxially sleeved on the fixed guide rod and extends upward through the upper ring plate. The sleeve portion is connected to the linear drive, and the upper ring plate is sleeved on the sleeve portion.

[0013] Preferably, multiple oil-water interface sensors are provided on the circumferential edge of the lower ring plate and at the entrance of the annular oil collecting groove to detect the liquid composition flowing into the annular oil collecting groove in real time.

[0014] Preferably, the outer periphery of the sliding sleeve is provided with a plurality of horizontally extending outward extension plates, and each of the extension plates is equipped with a liquid level sensor for real-time monitoring of the liquid level in the tank.

[0015] Preferably, the bottom of the lower ring plate is provided with a downwardly inclined lower conical surface to guide the floating oil into the annular oil collecting channel along the inclined surface.

[0016] The advantages of this application compared to the prior art are: 1. This invention uses a floating platform to track the oil-water interface in real time as the liquid level rises. Once the liquid level stabilizes, a positioning and clamping structure locks the floating platform, establishing a fixed operating reference. Subsequently, a linear actuator drives the lower ring plate downwards, opening an annular oil collection channel between it and the upper ring plate. Under the influence of gravity and surface tension, floating oil flows along the edge of the lower ring plate into the annular oil collection channel and converges into the annular oil collection groove, where it is discharged through the drain port, completing the separation. After oil collection is complete, the linear actuator resets, closing the annular oil collection channel to prevent water seepage. If the liquid level rises again, the floating platform unlocks, and the tracking and oil collection process repeats, achieving fully automatic, high-precision oil-water separation.

[0017] 2. This invention achieves free tracking and precise locking of the floating platform through the cooperation of an electromagnetic lock core and metal ball bearings. Combined with a winding mechanism to tension the suspension rope, a composite locking mechanism is formed, rigidly fixing the floating platform after the liquid level stabilizes, eliminating sinking or swaying. Furthermore, a linear actuator drives the lower ring plate downwards, opening the annular oil collection channel, allowing floating oil to flow smoothly into the annular oil collection groove for recovery. When the lower ring plate adheres to the upper ring plate, the annular oil collection channel closes to ensure a seal, effectively preventing water phase contamination and improving the intelligence level of oil-water separation and the purity of the recovered oil.

[0018] 3. This invention utilizes an oil-water interface sensor installed on the circumferential edge of the lower ring plate to monitor the liquid composition entering the annular oil collecting channel in real time. Upon detecting moisture, the annular oil collecting channel is immediately closed, effectively preventing water phase contamination. Simultaneously, multiple liquid level sensors are arranged on the outer circumference of the sliding sleeve to dynamically sense the liquid level height and stability, accurately determining the timing for locking and unlocking. This improves the response accuracy of oil-water separation and the purity of the recovered oil, avoiding accidental or missed collection. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of an oil-water separator with adaptive tracking oil level according to the present invention.

[0020] Figure 2This is a partial three-dimensional structural cross-sectional view of an oil level adaptive tracking intelligent oil-water separator according to the present invention.

[0021] Figure 3 This is a planar sectional view of an oil level adaptive tracking intelligent oil-water separator according to the present invention.

[0022] Figure 4 yes Figure 3 Enlarged diagram of point A.

[0023] Figure 5 This is a three-dimensional structural diagram of the oil-water separation mechanism of an oil-water separator with adaptive tracking oil level according to the present invention, viewed from a first perspective.

[0024] Figure 6 This is a three-dimensional structural diagram of the oil-water separation mechanism of an oil-water separator with adaptive tracking oil level according to the present invention, viewed from a second perspective.

[0025] Figure 7 This is a plan view of the oil-water separation mechanism of an oil-water separator with adaptive tracking oil level according to the present invention.

[0026] Figure 8 This is a three-dimensional structural cross-sectional view of the oil-water separation mechanism of an oil-water separator with adaptive tracking oil level according to the present invention.

[0027] Figure 9 This is a planar sectional view of the oil-water separation mechanism of an oil-water separator with adaptive tracking oil level according to the present invention.

[0028] Figure 10 This is a three-dimensional exploded view of the oil-water separation mechanism of an oil-water separator with adaptive tracking oil level according to the present invention.

[0029] The diagram is labeled as follows: 1. Tank body; 11. Inlet; 12. Dosing port; 13. Outlet; 2. Aeration pipe; 3. Rotating impeller; 31. Rotating shaft; 4. End cover; 41. Lifting rope; 5. Fixed guide rod; 51. Lower anti-detachment ring; 52. Buffer washer; 6. Floating platform; 61. Sliding sleeve; 611. Extension plate; 612. Liquid level sensor; 62. Positioning and clamping structure; 621. Electromagnetic lock core; 6211. Groove; 622. Metal ball; 7. Oil guiding component; 71. Upper ring plate; 72. Lower ring plate; 721. Annular oil collecting groove; 7211. Oil outlet; 722. Annular oil collecting channel; 723. Sleeve part; 73. Oil-water interface sensor; 8. Linear actuator; 81. Upper electromagnetic ring; 82. Lower electromagnetic ring; 83. Compression spring. Detailed Implementation

[0030] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0031] See Figures 1 to 4 As shown, an oil-water separator with adaptive tracking technology includes a tank 1. The tank 1 has an inlet 11, a dosing port 12, and an outlet 13. An aeration device and a rotating impeller 3 are located at the bottom of the tank 1. It also includes an oil-water separation mechanism located in the upper half of the tank 1. The oil-water separation mechanism includes a fixed guide rod 5, vertically installed inside the tank 1. An end cap 4 is located at the top of the tank 1. The upper end of the fixed guide rod 5 is fixedly connected to the end cap 4, and the lower end extends axially. A floating platform 6, in a ring shape, is coaxially sleeved on the fixed guide rod 5 and can slide along the axial direction of the fixed guide rod 5, used to track the oil-water interface in real time as the liquid level rises. An oil guiding component 7 is located inside the floating platform 6, used to guide and collect surface oil. The oil guiding component 7 includes an upper ring plate 71 and a lower ring plate 72. The upper ring plate 71 is fixedly installed at the bottom of the floating platform 6, and the bottom surface of the upper ring plate 71 is parallel to the bottom surface of the floating platform 6. The lower ring plate 72 is disposed at the bottom of the upper ring plate 71 and is axially movable relative to the upper ring plate 71. The top of the lower ring plate 72 has an annular oil collecting groove 721, and the bottom has an oil drain port 7211 communicating with the annular oil collecting groove 721. When the lower ring plate 72 moves downward away from the upper ring plate 71, an annular oil collecting channel 722 is formed between the lower ring plate 72 and the upper ring plate 71. The floating platform 6 is equipped with a linear actuator 8 for driving the lower ring plate 72 to move axially to open and close the annular oil collecting channel 722.

[0032] The top of the floating platform 6 is provided with an upwardly inclined upper conical surface to prevent liquid from accumulating on the top of the floating platform 6.

[0033] The aeration device includes several aeration pipes 2 evenly distributed at the bottom of the tank 1.

[0034] The rotating impeller 3 is provided with a rotating shaft 31 that is rotatably connected to the bottom of the tank body 1.

[0035] During the oil-water separation process, oily wastewater first enters the tank 1 through the inlet 11 on the side wall. Simultaneously, demulsifiers or flocculants are added through the dosing port 12 to promote oil-water separation. The aeration device at the bottom of the tank 1 continuously releases microbubbles into the wastewater during operation. These bubbles adhere to the surface of oil droplets, accelerating their upward movement and thus enhancing the oil phase's aggregation towards the liquid surface. Simultaneously, the rotating impeller 3 at the bottom of the tank 1, driven by an external motor, rotates during water intake, generating a gentle centrifugal field that further promotes the stratification of oil and water with different densities.

[0036] As the oil slick accumulates and the liquid level rises, the annular floating platform 6 moves upward synchronously due to its own buoyancy, always keeping in contact with the oil-water interface, thus achieving real-time tracking of the oil layer position.

[0037] When the liquid level stabilizes, the oil recovery process begins: the linear actuator 8 mounted on the floating platform 6 starts to move, pushing the lower ring plate 72, located below the upper ring plate 71, to move axially downwards. This creates an annular gap between the previously tightly fitted upper ring plate 71 and lower ring plate 72, forming an annular oil collection channel 722. At this time, the floating oil covering the liquid surface flows naturally to the inlet of the annular oil collection channel 722 under the influence of gravity and surface tension, and smoothly slides along the inclined surface of the lower ring plate 72, subsequently converging into the annular oil collection groove 721 at the top of the lower ring plate 72. The oil is then discharged through the oil outlet 7211 at the bottom of the lower ring plate 72, which connects to the oil collection groove, completing the recovery process.

[0038] At the same time, the fixed guide rod 5, which runs vertically through the entire floating platform 6, always provides precise guidance for the floating platform 6, ensuring that it only moves vertically and does not deviate.

[0039] After oil collection is complete, the linear actuator 8 retracts, and the lower ring plate 72 moves upward again under the action of the restoring force until it is in contact with the bottom surface of the upper ring plate 71 again. The annular oil collection channel 722 closes to prevent subsequent water seepage. If the liquid level rises again due to the inflow of new wastewater, the floating platform 6 continues to float freely, repeating the above adaptive tracking and intelligent oil collection cycle. The entire process requires no manual intervention, relying on the buoyancy response of the structure itself, mechanical linkage, and fluid guidance to achieve efficient oil-water separation.

[0040] See Figures 2 to 10 As shown, the top of the floating platform 6 is fixedly provided with a sliding sleeve 61 coaxial with the fixed guide rod 5, and the upper half of the fixed guide rod 5 is provided with a positioning and clamping structure 62 that cooperates with the sliding sleeve 61, which is used to lock the floating platform 6 after the liquid surface is stable, forming a fixed working platform.

[0041] Once the oily wastewater enters tank 1 and gradually forms a stable oil layer, the liquid level stops rising. At this point, the floating platform 6 rises with the liquid level to its final position and remains stationary. To ensure the stability of the subsequent oil collection process, the positioning and clamping structure 62 begins to operate. When triggered, the positioning and clamping structure 62 generates a radial force, causing the sliding sleeve 61 and the fixed guide rod 5 to change from a free sliding state to a rigid connection, thereby firmly locking the floating platform 6 at its current height.

[0042] Once locked, the floating platform 6 stops moving, forming a stable, fixed working platform. This provides a reliable mechanical reference for the lower ring plate 72 to accurately open the oil collection channel and efficiently collect high-purity floating oil. This effectively prevents changes in the annular oil collection channel 722 due to the sinking of the floating platform 6, thus improving the accuracy of oil-water separation.

[0043] See Figures 5 to 10 As shown, the lower end of the fixed guide rod 5 is provided with a lower anti-detachment ring 51, and the lower anti-detachment ring 51 is circumferentially fitted with a buffer washer 52, which is used to limit the downward extreme position of the floating platform 6 and absorb the impact.

[0044] As the floating platform 6 continues to slide down the fixed guide rod 5, its lower ring plate 72 will contact the lower anti-detachment ring 51 at the lower end of the fixed guide rod 5. This lower anti-detachment ring 51 acts as a mechanical stop, effectively preventing the floating platform 6 from sliding further down, thereby preventing it from detaching from the bottom end of the fixed guide rod 5.

[0045] Meanwhile, the buffer washer 52, which is fitted around the lower anti-detachment ring 51, undergoes elastic deformation the instant the lower ring plate 72 contacts the lower anti-detachment ring 51, absorbing the impact kinetic energy generated by the fall, reducing the collision force, and avoiding structural damage or noise caused by hard impact. This not only limits the downward limit position of the floating platform 6, but also improves the overall stability of operation through buffering.

[0046] See Figures 2 to 4 and Figures 8 to 10 As shown, the positioning and clamping structure 62 includes an electromagnetic lock core 621 and a plurality of metal balls 622. The electromagnetic lock core 621 is fixedly sleeved on the fixed guide rod 5, and the plurality of metal balls 622 are embedded in the inner wall of the sliding sleeve 61 and roll in cooperation with the outer peripheral surface of the electromagnetic lock core 621.

[0047] During the rising phase of the liquid level, the floating platform 6 floats freely with the oil level, and the top sliding sleeve 61 slides smoothly along the fixed guide rod 5. At this time, multiple metal balls 622 embedded in the inner wall of the sliding sleeve 61 always maintain rolling contact with the outer peripheral surface of the electromagnetic lock core 621, ensuring that the floating platform 6 moves smoothly and stably.

[0048] When the liquid level stabilizes and the control system enters the oil recovery preparation state, the electromagnetic lock core 621 is energized, and the magnetic field it generates firmly attracts the metal ball 622, causing the metal ball 622 to be radially pressed against the outer circumference of the electromagnetic lock core 621, preventing it from rolling or sliding. Since the metal ball 622 is in contact with both the sliding sleeve 61 and the electromagnetic lock core 621, this attraction rigidly connects the sliding sleeve 61 to the fixed guide rod 5, thereby locking the entire floating platform 6 at the current height.

[0049] Once locked, the floating platform 6 is no longer affected by minor fluctuations in the liquid surface, forming a stable operating benchmark. This provides reliable support for the lower ring plate 72 to accurately open the annular oil collection channel 722 and efficiently collect floating oil. After oil collection is completed, the electromagnetic lock core 621 is de-energized, the magnetic force disappears, the metal ball bearings 622 return to free rolling, and the floating platform 6 regains its ability to float with the liquid surface, entering the next round of adaptive tracking cycle.

[0050] See Figure 4 and Figures 8 to 10 As shown, the electromagnetic lock core 621 has a columnar structure, and its outer circumferential surface is provided with a groove 6211 along the axial direction to roll and cooperate with the metal ball 622.

[0051] As the floating platform 6 rises or falls with the liquid level, the sliding sleeve 61 moves along the fixed guide rod 5, and the metal balls 622 roll smoothly within the grooves 6211, ensuring stable movement of the floating platform 6. This guarantees guiding accuracy while avoiding wear or jamming caused by sliding friction, providing a reliable mechanical basis for the floating platform 6 to achieve highly sensitive oil level tracking.

[0052] See Figures 2 to 4 As shown, two winding mechanisms are symmetrically arranged on the end cap 4. Each winding mechanism is connected to a lifting rope 41. The lower end of the lifting rope 41 is fixedly connected to the floating platform 6. The lifting rope 41 and the positioning and clamping structure 62 cooperate to form a composite locking mechanism.

[0053] After the liquid level stabilizes, the oil recovery preparation stage begins: two symmetrically arranged winding mechanisms on the end cap 4 operate synchronously, gradually tensioning their respective connecting ropes 41, so that the ropes 41 change from a slack state to applying an upward pre-tension force to the floating platform 6. At the same time, the electromagnetic lock core 621 in the positioning and clamping structure 62 is energized, adsorbing and pressing the metal balls 622 on the inner wall of the sliding sleeve 61 into the groove 6211, achieving rigid locking in both the radial and axial directions.

[0054] The vertical upward tension provided by the suspension rope 41 and the circumferential and axial constraints provided by the positioning and clamping structure 62 work together to form a composite locking mechanism. This not only prevents the floating platform 6 from sinking due to its own weight, oil flow impact, or slight disturbances to the liquid surface, but also eliminates any residual gaps, firmly fixing it at the current oil level. This ensures that when the lower ring plate 72 opens the annular oil collecting channel 722, the entire floating platform 6 remains absolutely still, thus maintaining the accuracy and stability of the annular oil collecting channel 722, effectively preventing water phase contamination, and ensuring the purity of the recovered oil. After oil collection is completed, the winding mechanism releases the suspension rope 41, the electromagnetic lock core 621 is de-energized, and the floating platform 6 returns to its free-tracking state.

[0055] See Figure 2 and Figure 4 As shown, the lower ring plate 72 has a sleeve portion 723 that is coaxially sleeved on the fixed guide rod 5 and extends upward through the upper ring plate 71. The sleeve portion 723 is connected to the linear driver 8 for transmission, and the upper ring plate 71 is sleeved on the sleeve portion 723.

[0056] The linear actuator 8 includes an upper electromagnetic ring 81 and a lower electromagnetic ring 82, both of which are electromagnets. The upper electromagnetic ring 81 is coaxially disposed inside the sliding sleeve 61, and the lower electromagnetic ring 82 is coaxially sleeved on the upper end of the sleeve portion 723. A compression spring 83 is sleeved on the sleeve portion 723, and the compression spring 83 is located between the lower electromagnetic ring 82 and the upper ring plate 71.

[0057] When the upper electromagnetic ring 81 and the lower electromagnetic ring 82 are supplied with currents of the same polarity, they generate a repulsive magnetic force. At this time, the lower electromagnetic ring 82 is pushed downward under the action of the repulsive force, overcoming the preload of the compression spring 83, and driving the sleeve part 723 and the lower ring plate 72, which are rigidly connected to it, to move downward synchronously. Since the upper ring plate 71 is fixed to the bottom of the floating platform 6 and remains stationary, the downward movement of the lower ring plate 72 gradually widens the annular gap between it and the upper ring plate 71, thereby opening the annular oil collecting channel 722. The surface oil then flows into the annular oil collecting channel 722 along the outer circumferential slope of the lower ring plate 72 under the action of gravity and fluidity, and gathers in the annular oil collecting groove 721 at the top of the lower ring plate 72, and is finally discharged and recovered through the oil outlet 7211.

[0058] When opposite polarity currents are applied to the upper electromagnetic ring 81 and the lower electromagnetic ring 82, they generate a magnetic force that attracts each other, causing the lower electromagnetic ring 82 to move upward. This, in turn, compresses the upper ring plate 71 and the lower ring plate 72 together through the compression spring 83, closing the annular gap between them. The annular oil collecting channel 722 is thus in a closed state, effectively preventing liquid from entering the oil collecting groove and ensuring reliable sealing during the non-oil collection stage, preventing water phase infiltration.

[0059] The linear actuator 8 is any linear output type actuator capable of driving the lower ring plate 72 to move axially to open and close the annular oil collection channel 722, and is not limited to a specific type, such as a micro servo cylinder, pneumatic actuator, hydraulic cylinder, screw lifting mechanism, etc. Any drive device that can provide controllable axial displacement output and drive the lower ring plate 72 to move up and down relative to the upper ring plate 71 is an equivalent replacement of this application.

[0060] See Figure 4 and Figures 8 to 10 As shown, multiple oil-water interface sensors 73 are provided on the circumferential edge of the lower ring plate 72 and at the entrance of the annular oil collecting groove 721, for real-time detection of the liquid composition flowing into the annular oil collecting groove 721.

[0061] During the oil collection process, after the lower ring plate 72 moves downward and the annular oil collecting channel 722 opens, the surface liquid begins to flow from all sides towards the inlet of the annular oil collecting groove 721. At this time, multiple oil-water interface sensors 73, distributed along the circumferential edge of the lower ring plate 72 and adjacent to the inlet of the annular oil collecting groove 721, work synchronously to sense changes in the dielectric properties or conductivity of the liquid flowing through this area in real time. If the entering liquid is pure floating oil, the output signal of the oil-water interface sensor 73 remains stable within the oil phase threshold range, and the control system maintains the annular oil collecting channel 722 in the open state to continuously collect oil.

[0062] Once the oil layer thins or the liquid level fluctuates, causing the water phase to approach the annular oil collecting channel 722, the oil-water interface sensor 73 immediately detects the water component and sends an abnormal signal, triggering the control system to quickly control the linear driver 8 to reset. Combined with the compression spring 83, the lower ring plate 72 moves upward to close the annular oil collecting channel 722, thereby effectively preventing water-containing liquid from entering the annular oil collecting groove 721 and ensuring the high purity of the recovered oil.

[0063] See Figure 3 , Figure 8 and Figure 9 As shown, the outer periphery of the sliding sleeve 61 is provided with a plurality of horizontally extending extension plates 611, and each extension plate 611 is equipped with a liquid level sensor 612 for real-time monitoring of the liquid level in the tank 1.

[0064] As oily wastewater continuously enters tank 1, the liquid level gradually rises. Liquid level sensors 612, mounted on multiple horizontally extending plates 611 around the outer periphery of the sliding sleeve 61, detect the changes in liquid level in real time and transmit the detection signals to the control system. When all sensor readings become consistent and the fluctuation is less than a threshold within a set time, the control system determines that the liquid level has stabilized, and then triggers the locking program, activates the positioning and clamping structure 62, and tensions the suspension rope 41 to fix the floating platform 6 at that height.

[0065] If the liquid level changes due to water inflow or oil outflow, the liquid level sensor 612 can also capture the trend of height change in real time, helping to determine whether it is necessary to unlock and restore the tracking state, thus improving the accuracy of oil level tracking and locking timing.

[0066] See Figure 4 and Figures 6 to 9 As shown, the bottom of the lower ring plate 72 is provided with a downwardly inclined lower conical surface, which is used to guide the floating oil into the annular oil collection channel 722 along the inclined surface.

[0067] During the oil collection process, after the lower ring plate 72 moves downward and forms an annular oil collecting channel 722 with the upper ring plate 71, the floating oil covering the liquid surface naturally flows to the inlet of the annular oil collecting channel 722 under the action of surface tension and gravity. At this time, the downward-sloping lower conical surface of the bottom outer edge of the lower ring plate 72 acts as a guide, and the floating oil slides smoothly along this inclined surface, is efficiently guided to the edge of the annular oil collecting channel 722, and flows into the interior, and then gathers in the annular oil collecting groove 721 at the top. This avoids the oil flow from stagnating at the bottom of the lower ring plate 72, improving the oil collection efficiency and response speed.

[0068] This invention uses a floating platform 6 to track the oil-water interface in real time. After the liquid level stabilizes, a composite locking mechanism, consisting of a positioning and clamping structure 62 and a winding mechanism, rigidly locks the floating platform 6, eliminating sinking or shaking and providing a stable reference for oil collection. Subsequently, the linear actuator 8 drives the lower ring plate 72 to move downward, opening the annular oil collection channel 722. Floating oil flows along the edge of the lower ring plate 72 into the annular oil collection groove 721 and is discharged through the oil outlet 7211, completing high-purity recovery. After oil collection is completed, the annular oil collection channel 722 automatically closes to prevent water seepage.

[0069] Meanwhile, the oil-water interface sensor 73, circumferentially mounted on the lower ring plate 72, monitors the composition of the flowing liquid in real time. Once water is detected, it immediately controls the annular oil collecting channel 722 to close. The multi-point liquid level sensor 612 on the outer periphery of the sliding sleeve 61 dynamically senses the liquid level height and fluctuation status, accurately determining the timing of locking and unlocking, thereby improving the automation level, operational stability, and purity of the recovered oil in oil-water separation.

[0070] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. An oil level adaptive tracking intelligent oil-water separator, comprising a tank, wherein the tank is provided with a water inlet, a chemical dosing port and a water outlet, and an aeration device and a rotating impeller are provided at the bottom of the tank; Its features are, It also includes an oil-water separation mechanism located in the upper part of the tank, the oil-water separation mechanism comprising: A fixed guide rod is vertically installed inside the tank. The top of the tank is provided with an end cap. The upper end of the fixed guide rod is fixedly connected to the end cap, and the lower end extends axially. The floating platform has a ring-shaped structure and is coaxially sleeved on the fixed guide rod. It can slide along the axial direction of the fixed guide rod to track the oil-water interface in real time as the liquid level rises. An oil guiding component is disposed on the inner side of the floating platform to guide and collect surface oil. The oil guiding component includes an upper ring plate and a lower ring plate. The upper ring plate is fixedly installed at the bottom of the floating platform, and the bottom surface of the upper ring plate is parallel to the bottom surface of the floating platform. The lower ring plate is disposed at the bottom of the upper ring plate and can move axially relative to the upper ring plate. The top of the lower ring plate is provided with an annular oil collecting groove, and the bottom is provided with an oil discharge port communicating with the annular oil collecting groove. When the lower ring plate moves downward away from the upper ring plate, an annular oil collecting channel is formed between the lower ring plate and the upper ring plate. The floating platform is equipped with a linear actuator for driving the lower ring plate to move axially to open and close the annular oil collecting channel.

2. The oil level adaptive tracking intelligent oil-water separator according to claim 1, characterized in that, The top of the floating platform is fixedly provided with a sliding sleeve coaxial with the fixed guide rod. The upper half of the fixed guide rod is provided with a positioning and clamping structure that cooperates with the sliding sleeve, which is used to lock the floating platform after the liquid surface stabilizes, forming a fixed working platform.

3. The oil level adaptive tracking intelligent oil-water separator according to claim 2, characterized in that, The lower end of the fixed guide rod is provided with a lower anti-detachment ring, and the lower anti-detachment ring is circumferentially fitted with a buffer washer to limit the downward extreme position of the floating platform and absorb impact.

4. The oil level adaptive tracking intelligent oil-water separator according to claim 2, characterized in that, The positioning and clamping structure includes an electromagnetic lock core and multiple metal balls. The electromagnetic lock core is fixedly sleeved on a fixed guide rod, and the multiple metal balls are embedded in the inner wall of the sliding sleeve and roll in cooperation with the outer peripheral surface of the electromagnetic lock core.

5. The oil level adaptive tracking intelligent oil-water separator according to claim 4, characterized in that, The electromagnetic lock core has a columnar structure, and its outer circumferential surface has axial grooves that cooperate with the rolling of the metal balls.

6. The oil level adaptive tracking intelligent oil-water separator according to claim 4, characterized in that, Two winding mechanisms are symmetrically arranged on the end cap. Each winding mechanism is connected to a lifting rope. The lower end of the lifting rope is fixedly connected to the floating platform. The lifting rope and the positioning and clamping structure cooperate to form a composite locking mechanism.

7. The oil level adaptive tracking intelligent oil-water separator according to claim 2, characterized in that, The lower ring plate has a sleeve portion that is coaxially sleeved on the fixed guide rod and extends upward through the upper ring plate. The sleeve portion is connected to the linear drive, and the upper ring plate is sleeved on the sleeve portion.

8. The oil level adaptive tracking intelligent oil-water separator according to claim 7, characterized in that, Multiple oil-water interface sensors are provided on the circumferential edge of the lower ring plate and at the entrance of the annular oil collecting groove to detect the liquid composition flowing into the annular oil collecting groove in real time.

9. The oil level adaptive tracking intelligent oil-water separator according to claim 2, characterized in that, The outer periphery of the sliding sleeve is provided with multiple horizontally extending extension plates, and each extension plate is equipped with a liquid level sensor for real-time monitoring of the liquid level in the tank.

10. The oil level adaptive tracking intelligent oil-water separator according to claim 1, characterized in that, The bottom of the lower ring plate is provided with a downwardly inclined lower conical surface, which is used to guide the floating oil into the annular oil collection channel along the inclined surface.

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