A pipeline pigging degreasing waste liquid oil stain separation purification recycling device and method

Abstract

The application relates to the technical field of pipeline cleaning waste liquid treatment, and discloses a pipeline ball passing degreasing waste liquid oil separation, purification and recycling device and method. The device comprises a separation pool, a steady flow assembly, a first conveying pump and an oil absorption assembly, and the separation pool forms a first treatment cavity and a second treatment cavity. The steady flow assembly is used for steady flow, heating and sedimentation of the waste liquid in the first treatment cavity, and the first conveying pump is used for transferring the upper layer oil liquid through an oil absorption end floating with the liquid surface; the oil absorption assembly is used for moving oil absorption in the second treatment cavity, and the demulsification and water release are realized through a flow disturbing assembly, and the liquid level height of the oil absorption hole is adjusted through a floating adjusting assembly. The scheme can reduce the influences of liquid disturbance and emulsified water, and improve the oil separation and degreasing liquid recycling stability.

Description

Technical Field

[0001] This invention relates to the field of pipeline cleaning wastewater treatment technology, specifically to a device and method for separating, purifying, and reusing oily wastewater from pipeline ball cleaning and degreasing wastewater. Background Technology

[0002] Before commissioning, maintenance, or medium switching of long-distance pipelines, pigging and degreasing treatments are usually required. The discharged wastewater contains degreasing agents, water, oil, emulsified oil, solid residues, and sediment from inside the pipeline. If only discharged or simply settled, it will not only create pressure for oil pollution and hazardous waste disposal, but also increase the cost of replenishing water and agents. Therefore, it is necessary to separate oil and pollutants and reuse such wastewater on-site.

[0003] Existing methods such as static settling, manual skimming, ordinary oil pumps, or simple oil separators suffer from several drawbacks: the impact of incoming liquid can easily disrupt the stratification; fixed-point pumping can easily draw in the lower layer of water-containing waste liquid; water in emulsified oil is difficult to release and settle; and cleaning of residues and flow stabilization components is inconvenient. Therefore, a treatment device and method that integrates flow stabilization pre-separation, stable transfer of surface oil, mobile oil suction, turbulence demulsification, liquid level adaptation, and cleaning and maintenance is needed. Summary of the Invention

[0004] This invention provides a device and method for separating, purifying, and reusing oily waste liquid from pipe ball-passing degreasing, which solves the problems of large influent disturbance, slow emulsification oil-water separation, unstable surface oil extraction, easy disturbance of the layering interface by moving oil suction, and insufficient stability of degreasing liquid reuse in the existing ball-passing degreasing waste liquid treatment process.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a pipeline ball-passing degreasing wastewater oil separation, purification and reuse device, including a separation tank, a flow stabilizing component, a first delivery pump and an oil suction component; a first processing chamber and a second processing chamber are formed in the separation tank; the flow stabilizing component is disposed in the first processing chamber and includes a flow stabilizing plate for dispersing the impact of the wastewater entering the chamber and a heating pipe for heating the wastewater; the first delivery pump has an oil suction end that floats with the oil surface and is used to transport the upper layer of oil in the first processing chamber to the second processing chamber; the oil suction component is disposed in the second processing chamber and includes a movable oil suction plate for absorbing the upper layer of oil, a turbulence component located below the oil suction hole of the oil suction plate, and a floating adjustment component for adjusting the height of the oil suction hole relative to the oil surface.

[0006] Furthermore, the separation tank is equipped with a baffle plate that divides the separation tank into a first processing chamber and a second processing chamber to reduce liquid disturbance between the initial settling area and the moving oil suction area.

[0007] Furthermore, the flow stabilizing assembly also includes a base plate and a support plate. The support plate is disposed on the base plate, the flow stabilizing plate is disposed on the support plate and has mesh holes, and the heating tube is disposed below the flow stabilizing plate.

[0008] Furthermore, the bearing plate is fixedly installed on the base plate by the first support. The bearing plate has an inclined surface that gradually slopes down from the center of the plate to the surrounding area. There are two flow stabilizers, which are spaced apart and have staggered meshes.

[0009] Furthermore, the input end of the first delivery pump is connected to a first hose, a float is provided at the end of the first hose away from the first delivery pump, and the oil suction port of the first hose passes through the float and is lower than the lower surface of the float. The output end of the first delivery pump is connected to a discharge pipe.

[0010] Furthermore, the oil suction assembly also includes a linear drive assembly, a connecting seat, a second delivery pump, and a limiting shaft. The connecting seat is mounted on the linear drive assembly, the oil suction disc is slidably connected to the connecting seat through the limiting shaft, and the second delivery pump is connected to the oil pipe of the oil suction disc through a second hose.

[0011] Furthermore, the turbulence assembly includes a connecting plate, a sleeve, a shaft, fan blades, a cam, and a vibrating plate. The fan blades are mounted on the shaft and located inside the sleeve. The cam is fixedly connected to the shaft. The vibrating plate is located at the oil suction hole and connected to a guide ring. The cam is used to periodically push the guide ring or vibrating plate during rotation.

[0012] Furthermore, the floating adjustment assembly includes a second support, a swing arm, a drive component, a transmission shaft, a lifting mechanism, and a floating airbag. The second support is mounted on the oil suction plate, and the swing arm is rotatably connected to the second support. One end of the swing arm is connected to the transmission shaft, and the other end is connected to the floating airbag. The drive component is provided with a transmission groove through which the transmission shaft passes, and the lifting mechanism is used to drive the drive component to rise and fall.

[0013] Furthermore, the device also includes a hoisting device, which includes a base, an electric hoist, a hoisting rope, and a hook. A hanging ring is provided on the flow stabilizing plate, and the hook is used to connect with the hanging ring. The inner wall of the first processing chamber is provided with a limit plate and a clearance space. The limit plate is used to limit the bottom plate when the flow stabilizing component is lifted, and the clearance space is used to provide space for the tilting and deflection of the flow stabilizing component.

[0014] This invention also provides a method for separating, purifying, and reusing oil from wastewater from pipe ball degreasing. Using the aforementioned apparatus, the method includes the following steps: First, the wastewater from ball degreasing is introduced into a first treatment chamber; second, the wastewater is stabilized, heated, and allowed to settle using a flow stabilizing component, causing the oil, the main body of the wastewater, and the residue to initially separate into layers; third, the upper layer of oil is transported to a second treatment chamber via a first transfer pump using an oil suction end that floats with the oil surface; fourth, the oil suction component moves along a first direction within the second treatment chamber to suction oil, and a turbulence-breaking component is used to disrupt the flow and break the emulsion, stopping oil suction when the oil suction component returns along a second direction and allowing water droplets to continue settling; fifth, the separated degreasing liquid is reused in the ball degreasing or rinsing process.

[0015] Beneficial effects This invention sets up a continuous and synergistic processing chain for the initial separation by steady flow heating in the first processing chamber, the floating surface transfer, and the moving oil absorption and demulsification treatment in the second processing chamber. This chain can address problems such as large influx impact of degreasing waste liquid, oil-water emulsification, and liquid surface fluctuations in stages.

[0016] This invention uses a flow stabilizer and a heating tube to disperse, buffer, and heat the waste liquid before it enters the first treatment chamber. This reduces the damage to oil-water separation caused by the impact of the incoming liquid, and promotes the aggregation and floating of oil droplets and the settling of residues.

[0017] This invention uses an oil suction end that floats with the liquid surface to transfer the upper layer of oil in the first processing chamber to the second processing chamber, which can reduce the risk of sucking in the middle and lower layers of waste liquid or residue due to fixed-height suction and improve the stability of surface oil transfer.

[0018] This invention uses an oil suction plate to move and suck oil, a turbulence component to break up emulsions and release water, and a floating adjustment component to control the depth of the oil suction hole, so that the upper layer of oil at different positions in the second processing chamber can be covered and treated, and the risk of sucking in the aqueous phase or disturbing the oil-water interface is reduced.

[0019] This invention, through the combination of a hoisting device, a limiting plate, and clearance space, enables the flow stabilizing component to be lifted and tilted, facilitating the discharge of residues and residual waste liquid, thereby improving the convenience of continuous processing and maintenance cleaning of the device. Attached Figure Description

[0020] The above and other features, advantages, and aspects of the various embodiments of the present invention will become more apparent from the accompanying drawings and the following detailed description. In the drawings, the same or similar reference numerals denote the same or similar elements, wherein: Figure 1 A three-dimensional structural schematic diagram of a pipeline ball-passing degreasing wastewater oil separation, purification and reuse device according to Embodiment 1 of the present invention is shown; Figure 2 A cross-sectional schematic diagram of the second treatment chamber of the pipeline ball degreasing waste oil separation, purification and reuse device according to Embodiment 1 of the present invention is shown. Figure 3 A schematic diagram of the separation state of the flow stabilizing component of the pipeline ball-passing degreasing waste oil separation, purification and reuse device according to Embodiment 1 of the present invention is shown; Figure 4 A three-dimensional structural schematic diagram of the hoisting device and flow stabilizing component of the pipeline ball-passing degreasing wastewater oil-stain separation, purification and reuse device according to Embodiment 1 of the present invention is shown. Figure 5 An exploded structural diagram of the flow stabilization component of the pipeline ball-passing degreasing wastewater oil separation, purification and reuse device according to Embodiment 1 of the present invention is shown. Figure 6A three-dimensional structural schematic diagram of the oil suction component of the pipeline ball degreasing waste oil separation, purification and reuse device according to Embodiment 1 of the present invention is shown; Figure 7 A first-view perspective three-dimensional structural diagram of the connection between the turbulence component and the floating adjustment component of the oil suction assembly of the pipeline ball degreasing waste oil separation, purification and reuse device according to Embodiment 1 of the present invention is shown. Figure 8 This is a side view of the connection between the turbulence assembly and the floating adjustment assembly of the oil suction assembly of the pipeline ball degreasing waste oil separation, purification and reuse device according to Embodiment 1 of the present invention. Figure 9 This is a second-view perspective three-dimensional structural diagram showing the connection between the turbulence component and the floating adjustment component of the oil suction assembly of the pipeline ball degreasing waste oil separation, purification and reuse device according to Embodiment 1 of the present invention. Figure 10 A third-view perspective three-dimensional structural diagram of the connection between the turbulence component and the floating adjustment component of the oil suction assembly of the pipeline ball degreasing waste oil separation, purification and reuse device according to Embodiment 1 of the present invention is shown. Figure 11 A bottom view of the oil suction assembly and the turbulence assembly connected to the oil suction plate and the turbulence assembly of the oil suction assembly of the pipeline ball degreasing waste oil separation, purification and reuse device according to Embodiment 1 of the present invention is shown. Figure 12 A three-dimensional structural schematic diagram of the turbulence component connecting the turbulence component and the floating adjustment component of the oil suction component of the pipeline ball degreasing waste oil separation, purification and reuse device according to Embodiment 1 of the present invention is shown. Figure 13 An exploded view of the turbulence assembly, which connects the turbulence assembly and the floating adjustment assembly, of the oil suction assembly of the pipeline ball degreasing waste oil separation, purification and reuse device according to Embodiment 1 of the present invention.

[0021] Explanation of reference numerals in the attached figures 1-Separation tank, 11-Baffle plate, 12-First processing chamber, 121-Limiting plate, 122-Avoidance space, 13-Second processing chamber, 2-Flow stabilizing assembly, 21-Base plate, 22-Bearing plate, 221-First support, 23-Flow stabilizing plate, 231-Mesh, 232-Hanging ring, 24-Heating tube, 3-Lifting device, 31-Base, 32-Electric hoist, 33-Lifting rope, 34-Hook, 4-First delivery pump, 41-First hose, 42-Floating block, 43-Discharge pipe, 5-Oil suction assembly, 51-Linear drive assembly, 511-Motor, 512-Screw, 513-Guide shaft, 52-Connecting seat, 53-Second delivery pump, 531-Second hose, 54-Oil suction plate, 541-Oil suction hole, 542-Oil pipe, 55-Break assembly, 551-Connecting plate, 5511-Bend, 552-Sleeve, 553-Shaft, 554-Fan blade, 555-Cam, 556-Vibrating plate, 5561-Vibration guide ring, 56-Limiting shaft, 57-Floating adjustment assembly, 571-Second support, 572-Swing arm, 573-Drive component, 5731-Transmission groove, 574-Transmission shaft, 575-Lifting mechanism, 576-Floating airbag, 6-Oil storage tank, 7-Gas passage pipe. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Furthermore, the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0024] like Figures 1 to 13 As shown, the pipeline ball-passing degreasing wastewater oil-water separation, purification and reuse device includes a separation tank 1. A partition 11 is installed inside the separation tank 1, dividing it into a first processing chamber 12 and a second processing chamber 13. The first processing chamber 12 is mainly used for preliminary flow stabilization, heating and sedimentation separation of the ball-passing degreasing wastewater. The second processing chamber 13 is used to receive the oil after preliminary separation or subsequent processing liquids. The partitioning by the partition 11 reduces mutual disturbance between liquids at different processing stages, which is beneficial to improving the stability of the separation process.

[0025] A flow stabilizing assembly 2 is installed inside the first processing chamber 12. The flow stabilizing assembly 2 includes a base plate 21, a support plate 22, flow stabilizing plates 23, and a heating tube 24. The support plate 22 is fixedly installed on the base plate 21 by a first support 221, so that the support plate 22 and the base plate 21 form a stable support relationship. There are two flow stabilizing plates 23, which are spaced apart and installed on the support plate 22. The flow stabilizing plates 23 are provided with mesh holes 231, and the mesh holes 231 of the two flow stabilizing plates 23 are spaced apart. Therefore, after the waste liquid enters the first processing chamber 12, it will not directly impact the liquid at the bottom, but will first be dispersed and buffered by the flow stabilizing plates 23, so as to reduce the flow rate and disperse the flow direction of the waste liquid, thereby reducing the turbulence and scouring caused when the waste liquid enters.

[0026] The support plate 22 has an inclined surface that gradually slopes downwards from the center outwards. After the waste liquid falls onto the support plate 22 through the mesh 231, it can diffuse and flow outwards along this inclined surface, preventing the waste liquid from concentrating in a localized area. The heating tube 24 is coiled around the lower surface of the flow stabilizer plate 23. As the waste liquid passes through the flow stabilizer plate 23 and flows downwards, the heating tube 24 heats the waste liquid, raising its temperature and reducing its viscosity. This promotes the aggregation and floating of oil droplets and facilitates the settling of residues. Through the combined effects of the flow stabilizing effect of the flow stabilizer plate 23, the guiding effect of the support plate 22, and the heating effect of the heating tube 24, a relatively stable stratified state can be formed in the first processing chamber 12, promoting the formation of oil, waste liquid, and residues.

[0027] During operation, the waste liquid is discharged into the first processing chamber 12 and preferentially falls onto the flow stabilizer plate 23. After passing through the mesh 231 of the flow stabilizer plate 23, the waste liquid falls onto the support plate 22 and the bottom plate 21. The heating tube 24 heats itself to uniformly heat the waste liquid, while reducing its viscosity and promoting initial oil-water separation to accelerate sedimentation. After sedimentation, the less dense oil gradually floats to the upper part of the liquid surface, the main body of the waste liquid is located in the middle region, and the residue gradually settles downwards, thus achieving initial separation of the oil, waste liquid, and residue.

[0028] A first delivery pump 4 is installed at the top of the first processing chamber 12. The input end of the first delivery pump 4 is connected to a first flexible hose 41, and a float block 42 is installed at the end of the first flexible hose 41 away from the first delivery pump 4. The density of the float block 42 is less than that of oil, so it can float on the surface of the oil. The oil suction port of the first flexible hose 41 passes through the float block 42 and is below the lower surface of the float block 42, so as to extend into the upper layer of oil to a predetermined depth. Since the float block 42 can rise and fall with the oil level, the oil suction port of the first flexible hose 41 can be kept close to the oil surface, so that the first delivery pump 4 can preferentially extract the upper layer of separated oil and reduce the suction of the lower layer of waste liquid and residue.

[0029] The output end of the first transfer pump 4 is connected to a discharge pipe 43. After gravity settling, the first transfer pump 4 is started, and the first transfer pump 4 draws the oil into the interior through the first hose 41 and discharges it to the second processing chamber 13 through the discharge pipe 43. This structure can transfer the floating oil without significantly disrupting the stratification state within the first processing chamber 12, which is beneficial for improving oil-sludge separation efficiency and providing more stable liquid inlet conditions for subsequent purification and reuse treatment.

[0030] like Figures 1 to 13 As shown, the device also includes a hoisting device 3, which includes a base 31, an electric hoist 32, a hoisting rope 33, and a hook 34. The base 31 is disposed on the first processing chamber 12, the electric hoist 32 is mounted on the base 31, and the hoisting rope 33 is connected to the electric hoist 32. The electric hoist 32 is used to wind up or release the hoisting rope 33. The hook 34 is connected to the hoisting rope 33, and the flow stabilizing plate 23 of the flow stabilizing component 2 is provided with a hanging ring 232 that is connected to the hook 34. Thus, when it is necessary to lift, clean, or tilt the flow stabilizing component 2 in the first processing chamber 12, the hook 34 can be connected to the hanging ring 232, so that the winding force of the electric hoist 32 can be transmitted to the flow stabilizing component 2 through the hoisting rope 33, thereby avoiding direct manual movement of the flow stabilizing component 2 and improving the convenience and safety of maintenance operations.

[0031] Furthermore, the inner wall of the first processing chamber 12 is provided with two limiting plates 121, and the side wall corresponding to the limiting plates 121 is provided with a clearance space 122. The limiting plates 121 are used to form a limiting contact with the base plate 21 when the flow stabilizing component 2 rises to a preset height, and the clearance space 122 is used to provide clearance space for the subsequent deflection of the base plate 21. During use, the flow stabilizing component 2 can be pulled up in the first processing chamber 12 by winding the hoist 32 and the lifting rope 33. Since the cross-section of the base plate 21 matches that of the first processing chamber 12, the flow stabilizing component 2 can be guided and constrained by the inner wall of the first processing chamber 12 in the initial stage of rising, so that the flow stabilizing component 2 maintains a relatively stable rising state and is not prone to significant shaking or tilting during the lifting process.

[0032] As the flow stabilizing component 2 continues to rise until the base plate 21 contacts the limiting plate 121, the base plate 21 moves to a position corresponding to the clearance space 122. Since the limiting plate 121 obstructs the partial rise of the base plate 21, and the clearance space 122 provides space for the deflection of the base plate 21, when the hook 34 continues to pull the flow stabilizing component 2 upwards, the flow stabilizing component 2 can tilt near the contact point between the base plate 21 and the limiting plate 121, causing the base plate 21 and the waste liquid and residue it carries to deflect towards the clearance space 122. This allows the waste liquid and residue accumulated inside the first processing chamber 12 to be poured out, facilitating cleaning and maintenance of the first processing chamber 12 and the flow stabilizing component 2, and reducing the impact of long-term residue accumulation on subsequent oil separation efficiency.

[0033] An oil suction assembly 5 is installed inside the second processing chamber 13. The oil suction assembly 5 includes a linear drive assembly 51, a connecting seat 52, a second delivery pump 53, an oil suction plate 54, a turbulence assemblies 55, two limiting shafts 56, and a floating adjustment assembly 57. The connecting seat 52 is mounted on the linear drive assembly 51, which drives the connecting seat 52 to perform linear reciprocating motion within the second processing chamber 13. This allows the oil suction plate 54 to move along the surface area of ​​the oil within the second processing chamber 13 to suction oil, avoiding localized depletion of the oil layer or insufficient oil collection caused by suctioning only at a fixed position.

[0034] The linear drive assembly 51 includes a motor 511, a lead screw 512, and two guide shafts 513. The lead screw 512 is connected to the output end of the motor 511 and is rotatably mounted inside the second processing chamber 13. The motor 511 is mounted on the outer wall of the second processing chamber 13, and the end of the lead screw 512 connected to the motor 511 passes through the side wall of the second processing chamber 13. The two guide shafts 513 are fixedly mounted inside the second processing chamber 13, pass through the connecting seat 52, and are arranged parallel to the lead screw 512. The connecting seat 52 is slidably connected to the two guide shafts 513, and the lead screw 512 passes through the connecting seat 52 and is threadedly connected to the connecting seat 52. Thus, when the motor 511 drives the lead screw 512 to rotate, the connecting seat 52 moves along the guide shafts 513 under the threaded drive of the lead screw 512. The two guide shafts 513 can restrict the rotation of the connecting seat 52 with the lead screw 512, so that the connecting seat 52 maintains a stable linear motion state.

[0035] Two limiting shafts 56 pass through the connecting seat 52 and are slidably connected to it. The lower ends of the two limiting shafts 56 are fixedly connected to the oil suction plate 54. Through the sliding cooperation between the limiting shafts 56 and the connecting seat 52, the oil suction plate 54 can maintain a certain vertical floating or height adjustment space while moving laterally with the connecting seat 52, thereby adapting to changes in the oil level in the second processing chamber 13. The interior of the oil suction plate 54 is a hollow structure. At least one oil suction hole 541 is provided on the bottom wall of the oil suction plate 54, and an oil pipe 542 is provided on the upper surface of the oil suction plate 54. The oil pipe 542 is a rigid pipe. The turbulence component 55 is located below the oil suction hole 541. The oil suction hole 541 communicates with the internal cavity of the oil suction plate 54, allowing oil to enter the interior of the oil suction plate 54 through the oil suction hole 541 and then be transported outward through the oil pipe 542.

[0036] The float adjustment assembly 57 is connected to the oil suction plate 54, and is used to adjust the oil suction plate 54 to be positioned above or below the oil surface. During operation, the motor 511 drives the lead screw 512 to rotate, and the lead screw 512 drives the connecting seat 52 to move linearly along the guide shaft 513. Figure 11As shown, when the connecting seat 52 moves in the first direction, the oil suction hole 541 of the oil suction plate 54 is lower than the oil surface and located in the upper oil area by adjusting the floating adjustment component 57. At this time, the oil suction plate 54 moves synchronously with the connecting seat 52 through the limiting shaft 56 and forms a moving oil suction state in the upper oil area.

[0037] The input end of the second delivery pump 53 is connected to a second flexible hose 531. The end of the second flexible hose 531 away from the second delivery pump 53 is connected to the oil pipe 542. The output end of the second delivery pump 53 is connected to the oil storage tank 6. Since the oil pipe 542 is a rigid pipe, it can maintain a relatively stable connection position between the oil suction plate 54 and the second flexible hose 531. The second flexible hose 531 can adapt to the positional changes of the oil suction plate 54 as it moves with the connecting seat 52 and changes in height. During the movement of the oil suction plate 54, the second delivery pump 53 draws in oil, creating a suction effect inside the oil suction plate 54. The oil enters the oil suction plate 54 through the oil suction hole 541, and is then transported to the oil storage tank 6 in sequence through the oil pipe 542, the second flexible hose 531, and the second delivery pump 53.

[0038] While the oil suction plate 54 moves to suction oil, the turbulence-disrupting component 55, positioned below the oil suction hole 541, creates localized disturbance in the oil near the suction hole 541. This helps to break the oil-water emulsion encapsulation in the oil, allowing the water trapped within the oil phase to be released. The released water forms droplets, and because their density is greater than that of the oil, they settle below the oil layer or below the oil-water interface under gravity, while the oil remains in the upper layer and is drawn into the oil suction hole 541. Through the combined action of the moving oil suction plate 54, the liquid level adjustment by the flotation adjustment component 57, and the localized demulsification effect of the turbulence-disrupting component 55, the recovery efficiency of the upper layer oil in the second processing chamber 13 can be improved, and the water content in the recovered oil can be reduced.

[0039] When the oil suction plate 54 moves to the preset position, the motor 511 drives the lead screw 512 to rotate in the reverse direction. The lead screw 512 drives the connecting seat 52 to move in the second direction along the guide shaft 513. At this time, the oil suction hole 541 of the oil suction plate 54 is adjusted by the float adjustment component 57 to a position close to or above the upper surface of the oil, so that the oil suction hole 541 is no longer in the state of sucking oil deep into the oil layer. At the same time, the second delivery pump 53 stops sucking oil. Thus, during the return process of the oil suction plate 54, it is possible to avoid continuing to suck oil and bringing in more water that has not yet settled, and it is also possible to reduce the disturbance of the oil-water separation interface when the oil suction plate 54 moves inside the oil.

[0040] During the second directional movement of the connecting seat 52, the oil in the second processing chamber 13 is in a relatively static or low-disturbance state, allowing the water droplets released after demulsification by the turbulence component 55 in the previous oil suction stroke to settle further. Since the water droplet density is greater than the oil density, the water droplets gradually move below the oil layer or below the oil-water interface under gravity, while the oil remains in the upper region. After the connecting seat 52 returns to its initial position or the next oil suction starting position, the floating adjustment component 57 lowers the oil suction plate 54 back below the oil surface, and the second transfer pump 53 is started for the next oil suction. By using the oil suction plate 54 to perform moving oil suction and turbulence demulsification during the first directional movement, and stopping oil suction and providing settling time during the second directional movement, this cycle repeats, further separation of oil from water, waste liquid, and other components can be achieved, improving the purity of the recovered oil.

[0041] Furthermore, the aerodynamic assembly 55 includes two connecting plates 551, a sleeve 552, a shaft 553, a fan blade 554, a cam 555, and a vibrating plate 556. The connecting plates 551 are provided with curved portions 5511. The two connecting plates 551 are interconnected, and the curved portions 5511 of the two connecting plates 551 are positioned close to each other. The sleeve 552 is disposed between the two connecting plates 551. The shaft 553 passes through the sleeve 552 and the two connecting plates 551, and is rotatably connected to the connection between the shaft 553 and the two connecting plates 551, and is also rotatably connected to the sleeve 552. The fan blade 554 is disposed on the shaft 553 and is located inside the sleeve 552, allowing the oil passing through the sleeve 552 to act on the fan blade 554 and drive the shaft 553 to rotate. Cam 555 is fixedly connected to shaft 553. Vibrating plate 556 is embedded in oil suction hole 541. Two guide rings 5561 are also connected to the vibrating plate 556. Shaft 553 passes through guide ring 5561 and rotates with guide ring 5561. Cam 555 is located on one side of guide ring 5561 and can intermittently push guide ring 5561 or vibrating plate 556 during rotation.

[0042] When the oil suction plate 54 travels in the first direction, it moves relative to the oil, and the oil enters the turbulence assembly 55 and passes through the sleeve 552. During the flow of the oil through the sleeve 552, the oil drives the fan blade 554 to rotate. The fan blade 554 shears, disperses, and turbulents the oil, making it easier for water in an emulsified or encapsulated state to be released from the oil phase. The released fine water droplets, under the combined action of turbulence, collision, and the obstruction and guidance of the bend 5511, gradually coalesce into larger droplets. These larger droplets, under the influence of gravity, are more likely to settle below the oil layer or below the oil-water interface, thereby promoting further separation of the oil and water.

[0043] Simultaneously, after passing through the sleeve 552, the oil, driven by the fan blade 554, rushes towards the curved portion 5511 of the two connecting plates 551. The curved portion 5511 provides some obstruction and deflection to the oil, causing local backflow and turbulence below the oil suction hole 541, further improving the demulsification and water release effects. When the fan blade 554 rotates driven by the oil, the shaft 553 synchronously drives the cam 555 to rotate. During rotation, the cam 555 periodically pushes the guide ring 5561 or the vibrating plate 556 through its eccentric outer contour. This push is transmitted to the vibrating plate 556 via the guide ring 5561, causing the vibrating plate 556 to generate slight vibrations at the oil suction hole 541. Thus, the oil near the oil suction hole 541 is simultaneously subjected to flow turbulence and mechanical micro-vibration, which helps to expel air bubbles in the oil and promotes the release, aggregation, and sedimentation of water encapsulated in the oil phase.

[0044] The aforementioned turbulence and micro-vibration processes are generated by the flow of oil relative to the turbulence assembly 55 when the oil suction plate 54 moves in the first direction, without the need for additional drive components. By coordinating the fan blades 554, cam 555, guide ring 5561, and vibrating plate 556, turbulence demulsification and micro-vibration water release can be completed simultaneously with the movement of the oil suction plate 54 to suction oil, thereby improving the separation effect of oil, water, and waste liquid in the second processing chamber 13.

[0045] In this embodiment, the turbulence effect generated by the turbulence component 55 mainly includes the axial flow of the oil as it moves in the first direction with the oil suction plate 54, the shearing effect of the fan blade 554 on the oil, and the micro-vibration effect of the vibrating plate 556 at the oil suction hole 541. The above-mentioned axial flow, shearing, and micro-vibration work together to break the emulsion structure in the oil, causing the small water droplets originally wrapped in the oil phase to be released from the oil phase and gradually coalesce into larger water droplets during continuous turbulence and collision. Because the larger water droplets have a higher density than the oil, they can sink to below the oil layer or below the oil-water interface more quickly under the action of gravity, while the oil continues to remain in the upper region. The position and suction depth of the oil suction hole 541 of the oil suction plate 54 can be adjusted by the floating adjustment component 57 so that the suction hole is mainly located at the height of the upper, cleaner oil, thereby preferentially sucking up the upper oil and making it less likely to suck up the bottom water phase or water-containing waste liquid. Compared to simply placing the oil suction plate statically, this embodiment accelerates the coalescence and sedimentation of fine water droplets through continuous flow, shear demulsification, and micro-vibration water release. This reduces the likelihood of water in the emulsified oil being absorbed along with the oil, and makes the oil-water separation speed significantly faster than in the static sedimentation state. The micro-vibration frequency of the vibrating plate 556 can be generated by the fan blade 554 driving the shaft 553 and cam 555 to rotate. In this embodiment, the micro-vibration frequency can be kept in the range of 20Hz to 60Hz by adjusting the blade angle of the fan blade 554, the eccentricity of the cam 555, and the travel speed of the oil suction plate 54, so as to balance the demulsification and water release effect with the disturbance control of the oil-water separation interface.

[0046] The floating adjustment assembly 57 includes two second supports 571, four swing arms 572, a drive component 573, two drive shafts 574, a lifting mechanism 575, and a floating airbag 576. The second supports 571 are disposed on the upper surface of the oil suction plate 54. The swing arms 572 are curved, with each pair of swing arms 572 forming a group. Each group of swing arms 572 is symmetrically arranged, and the curved part of the swing arm 572 is rotatably connected to the corresponding second support 571. The upper end of the same group of swing arms 572 is fixedly connected to the drive shaft 574, and the lower end of the same group of swing arms 572 is connected to the floating airbag 576. The drive component 573 has a transmission groove 5731 for the drive shaft 574 to pass through. The oil pipe 542 passes through the drive component 573 and is slidably connected to the drive component 573, so that the oil pipe 542 can guide the lifting and lowering movement of the drive component 573. The lifting mechanism 575 is mounted on the oil suction plate 54, and the output end of the lifting mechanism 575 is fixedly connected to the driving component 573 for driving the driving component 573 to perform lifting and lowering movements. In this embodiment, the lifting mechanism 575 can adopt an existing electric push rod type linear lifting mechanism, whose output end can extend or retract vertically to drive the driving component 573 to lift and lower.

[0047] When the output end of the lifting mechanism 575 extends, the driving component 573 moves upward, and the transmission groove 5731 moves synchronously with the driving component 573. Through the groove wall of the transmission groove 5731, it pushes the two transmission shafts 574 to swing synchronously in opposite directions, causing the swing arms 572 on both sides to swing around the second support 571. This causes the swing arms 572 to drive the floating airbag 576 to swing downward. Due to the buoyancy of the oil, the floating airbag 576 can exert a reverse upward lifting effect on the oil suction plate 54 after swinging downward, thereby driving the oil suction plate 54 to move upward, so that the oil suction plate 54 is above or close to the oil surface. At this time, the oil suction hole 541 no longer penetrates into the oil layer to perform oil suction. In this state, the oil suction plate 54 moves in the second direction along with the connecting seat 52. When the floating airbag 576 moves on the surface of the oil, it can smooth the surface of the oil to a certain extent and reduce local turbulence. At the same time, the second delivery pump 53 stops sucking oil, allowing the water droplets released by the turbulence and demulsification in the previous oil suction stroke to continue to settle, which is also conducive to the discharge of air bubbles in the oil.

[0048] When the output end of the lifting mechanism 575 retracts, the drive component 573 moves downward. The drive component 573 drives the two drive shafts 574 to synchronously reset through the transmission groove 5731, causing the two swing arms 572 to swing in the opposite direction around the second support 571, and causing the floating airbag 576 to swing upward. After the floating airbag 576 moves upward, its immersion depth decreases, which reduces the upward force on the oil suction plate 54. Under its own weight and the guidance of the limiting shaft 56, the oil suction plate 54 moves downward, and the oil suction hole 541 is placed at a depth suitable for sucking up the upper layer of oil. In this state, the second delivery pump 53 starts, and the oil suction plate 54 moves in the first direction with the connecting seat 52 to move and suck up oil. During the up and down adjustment of the oil suction plate 54, the two limiting shafts 56 slide up and down relative to the connecting seat 52, so that the oil suction plate 54 can complete the liquid level adjustment while maintaining lateral follow-up, avoiding significant tilting of the oil suction plate 54 during the lifting process.

[0049] The device also includes a ball-passing pipe 7, one end of which is connected to the first processing chamber 12, and the other end is used to connect to a long-distance pipeline. Thus, the oily waste liquid generated during the ball-passing degreasing process can enter the first processing chamber 12 through the ball-passing pipe 7 for flow stabilization, heating, sedimentation, and oil separation treatment, so that the ball-passing degreasing waste liquid can be directly introduced into the device for subsequent purification and reuse.

[0050] Based on the above device, this embodiment also provides a method for separating, purifying and reusing oily waste liquid from pipeline ball degreasing. The method includes the following steps: First, the oily waste liquid generated during the pipeline ball degreasing process is introduced into the first treatment chamber 12, so that the waste liquid falls preferentially onto the flow stabilizer plate 23 and enters the area above the support plate 22 after being dispersed through the mesh 231.

[0051] The second step involves stabilizing, heating, and settling the waste liquid using the flow stabilizing component 2. Specifically, after passing through the mesh 231, the waste liquid diffuses outwards under the guidance of the inclined surface of the support plate 22. The heating pipe 24 heats the waste liquid flowing through the flow stabilizing component 2 to reduce its viscosity and promote the aggregation and floating of oil droplets and the settling of residues, thus initially separating the oil, the main body of the waste liquid, and the residues within the first processing chamber 12.

[0052] The third step involves using the first transfer pump 4 to transport the upper layer of oil in the first processing chamber 12 to the second processing chamber 13. Specifically, after initial stratification is formed in the first processing chamber 12, the floating block 42 rises and falls with the level of the upper layer of oil, keeping the oil suction port of the first hose 41 at a preset depth in the upper layer of oil. The first transfer pump 4 then transports the upper layer of oil to the second processing chamber 13 through the discharge pipe 43, thereby reducing the possibility of residues and lower-middle-layer waste liquid in the first processing chamber 12 entering the subsequent oil suction processing area.

[0053] The fourth step involves moving the oil suction assembly 5 along the first direction within the second processing chamber 13 to suction oil and performing demulsification and turbulence removal via the turbulence-disrupting assembly 55. When the oil suction assembly 5 returns along the second direction, it stops suctioning oil and allows water droplets to continue settling. Specifically, the linear drive assembly 51 drives the connecting seat 52 to move along the first direction, the floating adjustment assembly 57 lowers the oil suction hole 541 of the oil suction plate 54 below the oil surface and within the upper oil layer, and the second delivery pump 53 starts suctioning oil. As the oil suction plate 54 moves, the oil flows relative to the turbulence-disrupting assembly 55 and drives the fan blade 554 to rotate. The fan blade 554, cam 555, guide ring 5561, and vibrating plate 556 work together to create turbulence-disrupting and micro-vibration water release effects, releasing water from the emulsified oil and causing it to settle below the oil layer. When the oil suction plate 54 moves to the preset position, the second delivery pump 53 stops suctioning oil, the linear drive assembly 51 drives the connecting seat 52 to return in the second direction, and the floating adjustment assembly 57 makes the oil suction hole 541 close to or above the upper surface of the oil. During the return, the water droplets released in the previous oil suction stroke continue to settle. After the oil suction plate 54 returns to the next oil suction starting position, the cycle of moving oil suction, turbulence demulsification and return stationary is repeated.

[0054] The fifth step involves reusing the separated degreasing liquid for the pipeline degreasing or rinsing process. Specifically, the oil drawn by the second transfer pump 53 can be transported to the oil storage tank 6 or other recovery containers for recycling; the degreasing liquid or cleaning liquid separated from the oil in the second processing chamber 13 and the first processing chamber 12 can be returned to the pipeline degreasing or rinsing process as replenishment liquid after the oil content, suspended solids content, or process indicators meet the requirements for on-site reuse. When it is necessary to clean the residue, the flow stabilizing component 2 is lifted by the hoisting device 3, and the flow stabilizing component 2 is deflected and tilted by the limiting plate 121 and the clearance space 122, thereby discharging the accumulated residue and residual waste liquid.

[0055] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A pipeline ball-passing degreasing wastewater oil separation, purification and reuse device, characterized in that, The system includes a separation tank (1), a flow stabilizing component (2), a first transfer pump (4), and an oil suction component (5). The separation tank (1) forms a first processing chamber (12) and a second processing chamber (13). The flow stabilizing component (2) is disposed in the first processing chamber (12) and includes a flow stabilizing plate (23) for dispersing the impact of waste liquid entering the system and a heating pipe (24) for heating the waste liquid. The first transfer pump (4) has an oil suction end that floats with the oil surface and is used to transport the upper layer of oil in the first processing chamber (12) to the second processing chamber (13). The oil suction component (5) is disposed in the second processing chamber (13) and includes an oil suction plate (54) that can be moved to suck up the upper layer of oil, a turbulence component (55) located below the oil suction hole (541) of the oil suction plate (54), and a floating adjustment component (57) for adjusting the height of the oil suction hole (541) relative to the oil surface.

2. The pipeline ball-passing degreasing wastewater oil separation, purification and reuse device according to claim 1, characterized in that, The separation tank (1) is provided with a partition (11) inside, which divides the separation tank (1) into the first processing chamber (12) and the second processing chamber (13) to reduce liquid disturbance between the initial settling area and the moving oil suction area.

3. The pipeline ball-passing degreasing wastewater oil separation, purification and reuse device according to claim 1, characterized in that, The current stabilizing component (2) also includes a base plate (21) and a support plate (22). The support plate (22) is disposed on the base plate (21), the current stabilizing plate (23) is disposed on the support plate (22) and has a mesh (231), and the heating tube (24) is disposed below the current stabilizing plate (23).

4. The pipeline ball-passing degreasing wastewater oil separation, purification and reuse device according to claim 3, characterized in that, The bearing plate (22) is fixedly installed on the base plate (21) by the first support (221). The bearing plate (22) has an inclined surface that gradually slopes down from the center of the plate to the surrounding area. There are two flow stabilizers (23), which are spaced apart and have their mesh (231) staggered.

5. The pipeline ball-passing degreasing wastewater oil separation, purification and reuse device according to claim 1, characterized in that, The input end of the first delivery pump (4) is connected to a first hose (41). A float block (42) is provided at the end of the first hose (41) away from the first delivery pump (4). The oil suction port of the first hose (41) passes through the float block (42) and is lower than the lower surface of the float block (42). The output end of the first delivery pump (4) is connected to a discharge pipe (43).

6. The pipeline ball-passing degreasing wastewater oil separation, purification and reuse device according to claim 1, characterized in that, The oil suction assembly (5) further includes a linear drive assembly (51), a connecting seat (52), a second delivery pump (53), and a limiting shaft (56). The connecting seat (52) is mounted on the linear drive assembly (51). The oil suction disc (54) is slidably connected to the connecting seat (52) through the limiting shaft (56). The second delivery pump (53) is connected to the oil pipe (542) of the oil suction disc (54) through a second hose (531).

7. The pipeline ball-passing degreasing wastewater oil-sewage separation, purification and reuse device according to claim 1, characterized in that, The turbulence assembly (55) includes a connecting plate (551), a sleeve (552), a shaft (553), a fan blade (554), a cam (555), and a vibrating plate (556). The fan blade (554) is disposed on the shaft (553) and located inside the sleeve (552). The cam (555) is fixedly connected to the shaft (553). The vibrating plate (556) is disposed at the oil suction hole (541) and connected to a guide ring (5561). The cam (555) is used to periodically push the guide ring (5561) or the vibrating plate (556) during rotation.

8. The pipeline ball-passing degreasing wastewater oil separation, purification and reuse device according to claim 1, characterized in that, The floating adjustment assembly (57) includes a second support (571), a swing arm (572), a drive component (573), a transmission shaft (574), a lifting mechanism (575), and a floating airbag (576). The second support (571) is mounted on the oil suction plate (54). The swing arm (572) is rotatably connected to the second support (571). One end of the swing arm (572) is connected to the transmission shaft (574), and the other end is connected to the floating airbag (576). The drive component (573) is provided with a transmission groove (5731) through which the transmission shaft (574) passes. The lifting mechanism (575) is used to drive the drive component (573) to rise and fall.

9. The pipeline ball-passing degreasing wastewater oil separation, purification and reuse device according to claim 3, characterized in that, It also includes a hoisting device (3), which includes a base (31), an electric hoist (32), a hoisting rope (33) and a hook (34). A hanging ring (232) is provided on the flow stabilizing plate (23), and the hook (34) is used to connect with the hanging ring (232). The inner wall of the first processing chamber (12) is provided with a limiting plate (121) and a clearance space (122). The limiting plate (121) is used to limit the bottom plate (21) when the flow stabilizing component (2) is lifted, and the clearance space (122) is used to provide space for the tilting and deflection of the flow stabilizing component (2).

10. A method for separating, purifying, and reusing oil-staining wastewater from pipeline ball-passing degreasing, characterized in that, The method using the pipeline ball-passing degreasing wastewater oil separation, purification and reuse device according to any one of claims 1 to 9 includes the following steps: The first step is to introduce the degreasing waste liquid from the ball-passing process into the first treatment chamber (12). The second step is to stabilize, heat and settle the waste liquid through the flow stabilization component (2) so that the oil, waste liquid and residue are initially separated into layers. The third step is to use the first delivery pump (4) to deliver the upper layer of oil to the second processing chamber (13) through the oil suction end that floats with the oil surface. The fourth step is to move the oil-absorbing component (5) in the second processing chamber (13) along the first direction to absorb oil and to turbulently break the emulsion through the turbulence component (55). When the oil-absorbing component (5) returns along the second direction, it stops absorbing oil and allows the water droplets to continue to settle. The fifth step is to reuse the separated degreasing liquid for the ball degreasing or rinsing process.

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