Water treatment device for waste oil at outlet of centrifugal oil purification centrifugal barrel

Abstract

The utility model relates to a water treatment device for waste oil at an outlet of a centrifugal oil purification centrifugal barrel, relates to the technical field of oil purification equipment, and aims to solve the problem of large waste liquid discharge amount, the water treatment device comprises an oil-water collection tank arranged at an outlet of a separator, and the oil-water collection tank is communicated with an oil-water separation tank; a middle baffle plate and a tail oil baffle plate are arranged on the bottom wall of the oil-water separation box at intervals, an oil-water mixed liquid buffer area, an oil-water separation area and a drainage area are formed in the oil-water separation box by the middle baffle plate and the tail oil baffle plate, and a front oil baffle plate and a rear oil baffle plate are arranged on the top wall of the oil-water separation box; the front oil baffle plate and the rear oil baffle plate are arranged in an oil-water mixed liquid buffer area and an oil-water separation area respectively, a gear oil pump is arranged on the oil-water separation box, the suction end of the gear oil pump is located in the oil-water separation area, the outlet end of the gear oil pump is communicated with a separator, and the separator is provided with a heat recoverer used for being communicated with an oil station. The turbine oil recovery device has the effects of improving the turbine oil recovery efficiency and reducing the waste oil amount.

Description

Technical Field

[0001] This application relates to the field of oil purification equipment technology, and in particular to a centrifugal oil purification centrifuge tank outlet waste oil and water treatment device. Background Technology

[0002] In numerous industrial sectors, including power generation, machinery manufacturing, shipbuilding, and chemicals, the quality of hydraulic fluids directly impacts the operational stability and safety of equipment. Particularly in the power industry, the purity of turbine oils and insulating oils is crucial for the normal operation of power generation equipment. In machinery manufacturing, hydraulic oils in hydraulic systems require regular purification to remove impurities and moisture, preventing wear and malfunctions caused by oil contamination. In the shipbuilding and chemical industries, oil-water separators are key equipment for addressing marine oil spills and preventing environmental pollution. Therefore, efficient and reliable oil-water separators have a wide range of applications in these fields.

[0003] In existing centrifugal oil purification devices, the process and device design for the oil-water collection tank (waste oil box) at the centrifugal tank outlet have the following drawbacks: large waste liquid discharge, difficulty in meeting increasingly stringent environmental regulations, insufficient recycling of turbine oil resources, and reduced efficiency and lifespan leading to increased operating costs. Therefore, improvements are needed. Utility Model Content

[0004] To address the problem of large wastewater discharge, this application provides a centrifugal oil purification centrifuge tank outlet waste oil and water treatment device.

[0005] The centrifugal oil purification centrifuge tank outlet waste oil water treatment device provided in this application adopts the following technical solution:

[0006] A centrifugal oil purification centrifuge outlet waste oil and water treatment device includes an oil and water collection tank arranged at the outlet of the separator. The oil and water collection tank is connected to an oil and water separation tank. The interior of the oil and water separation tank is hollow. The bottom wall of the oil and water separation tank is provided with a middle baffle and a tail oil barrier plate arranged at intervals along the flow direction of the oil and water mixture. The middle baffle and the tail oil barrier plate form an oil and water mixture buffer zone, an oil and water separation zone and a drainage zone inside the oil and water separation tank. A front oil baffle and a rear oil baffle are provided on the top wall of the oil and water separation tank. The front oil baffle and the rear oil baffle are respectively arranged in the oil and water mixture buffer zone and the oil and water separation zone. A gear oil pump is provided on the oil and water separation tank. The suction end of the gear oil pump is located in the oil and water separation zone. The outlet end of the gear oil pump is connected to the separator. The separator is provided with a heat recovery unit for connection with an oil station.

[0007] Due to the design of the process and equipment for the centrifuge outlet oil-water collection tank (waste oil box), there are problems such as large waste liquid discharge, difficulty in meeting increasingly stringent environmental regulations, insufficient recycling of turbine oil resources, and reduced efficiency and lifespan leading to increased operating costs. By adopting the above technical solution, including an oil-water collection tank connected to the outlet of the separator, an oil-water separation tank connected to the oil-water collection tank, and the bottom wall of the oil-water separation tank being arranged with intermediate baffles and tail oil baffles to form an oil-water mixture buffer zone, an oil-water separation zone, and a drainage zone, front and rear oil baffles are installed on the top wall of the oil-water separation tank, and a gear oil pump draws turbine oil to the separator, which is connected to the oil station through a heat recovery unit.

[0008] After the oil is purified by the separator, the oil-water mixture flows from the oil purification device outlet into the oil-water collection tank until the oil-water mixture reaches the liquid level. Then, the oil pump is shut off and the corresponding valve is opened, allowing the oil-water mixture to enter the oil-water separation tank. The oil-water mixture then enters the oil-water mixture buffer zone, where it forms an emulsion state at normal temperature and pressure. This emulsion state continues to flow, passing under the front baffle plate and then into the oil-water separation zone. In the oil-water separation zone, the mixture remains at normal temperature and pressure. Because the density of turbine oil is less than that of water, the oil and water begin to separate under gravity. The turbine oil, due to its lower density, floats above the oil-water separation zone, while the water flows under the rear baffle plate into the drainage zone. After gravity sedimentation separation, the turbine oil is pressurized to 0.1 MPa by the suction of the gear oil pump, enters the separator, then the heat recovery unit, and finally the oil enters the oil station.

[0009] By incorporating an oil-water collection tank, an oil-water separator, and a gear oil pump, this solution optimizes the oil-water separation process, simplifies operational steps, improves turbine oil recovery efficiency, and reduces waste oil volume. This results in a multi-advantageous oil-water separation system with a simple process, easy operation, increased turbine oil utilization and lifespan, simplified procedures, and reduced waste oil volume.

[0010] Optionally, the oil-water collection tank is equipped with a mechanical float for detecting the level of the oil-water mixture.

[0011] By adopting the above technical solution, a mechanical float is installed inside the oil-water collection tank. The mechanical float allows for real-time monitoring of the liquid level changes in the oil-water collection tank. When the oil-water mixture reaches the preset level, it can promptly trigger subsequent control processes (such as shutting down the oil pump or opening the valve), ensuring that the oil-water mixture enters the oil-water separator for processing at the optimal time, thereby enhancing the system's automation level and response speed.

[0012] Optionally, the connecting pipeline between the oil-water collection tank and the oil-water separator is equipped with an inlet ball valve for an oil-water separator.

[0013] By adopting the above technical solution, the inlet ball valve of the oil-water separator is installed on the connecting pipeline between the oil-water collection tank and the oil-water separator. With the setting of the inlet ball valve of the oil-water separator, the conveying process of the oil-water mixture from the oil-water collection tank to the oil-water separator can be precisely controlled, and flexible operation of flow regulation and opening / closing can be realized.

[0014] Optionally, the gear oil pump outlet end is equipped with an oil-water separation device manual valve.

[0015] By adopting the above technical solution, the manual oil outlet valve of the oil-water separator is installed at the outlet end of the gear oil pump. With the setting of the oil-water separator, the turbine oil flow and on / off status output by the gear oil pump can be flexibly controlled, and the oil circuit can be manually cut off in the event of equipment maintenance or emergency, so as to avoid oil leakage or equipment overload, thereby enhancing the safety of system operation and the convenience of maintenance.

[0016] Optionally, the drainage area of ​​the oil-water separator is connected to a drainage channel, and the drainage channel is equipped with a drain valve for the oil-water separator.

[0017] By adopting the above technical solution, the drainage area of ​​the oil-water separator is connected to the outside of the tank through a drainage channel, and the drain valve of the oil-water separator is installed on the drainage channel. Through the setting of the drainage channel and the drain valve of the oil-water separator, the discharge process of the water phase after separation can be precisely controlled. It can not only discharge clean water in time after the oil-water separation is completed by opening the drain valve to maintain the system water level balance, but also close the valve during the process to prevent incompletely separated oil from mixing into the discharge water body.

[0018] Optionally, the lower edges of the front and rear oil baffles are lower than the upper edges of the middle baffle and the tail oil barrier, the lower edges of the front and rear oil baffles are at the same horizontal height, and the upper edges of the middle baffle and the tail oil barrier are at the same horizontal height.

[0019] By adopting the above technical solution, the lower edges of the front and rear oil baffles are lower than the upper edges of the middle baffle and the tail oil barrier. Through the setting of the dimensions of the front, rear, middle, and tail oil baffles, it can be ensured that the oil-water mixture forms a clear liquid level gradient and flow path in the oil-water separation tank: the mixture first enters the oil-water mixing buffer zone, and then flows into the oil-water separation zone below the front oil baffle. Because the lower edge of the front oil baffle is lower than the upper edge of the middle baffle, a stable overflow port is formed, which not only avoids the mixture directly impacting the separated oil layer, but also ensures that the separated water phase can flow into the drainage zone in a directional manner through the height difference between the rear oil baffle and the tail oil barrier. This structure enhances the oil-water interface stratification effect, reduces the risk of secondary oil droplet entrainment, and significantly improves the processing accuracy of oil-water separation.

[0020] Optionally, the height of the middle baffle and the tail oil barrier is 2 / 3 to 3 / 4 of the height of the oil-water separator.

[0021] By adopting the above technical solution, the height of the middle baffle and the tail oil barrier is 2 / 3 to 3 / 4 of the height of the oil-water separator. By setting the height of the middle baffle and the tail oil barrier, this height design ensures that the baffle can effectively separate the buffer zone, separation zone and drainage zone in the oil-water separator, forming a stable liquid level stratification space. It also provides sufficient settling path and residence time for the oil-water mixture in the separation zone, promoting the full floating and separation of oil droplets under the action of gravity. At the same time, it avoids the oil-water interface from fluctuating or water accumulation in the drainage zone due to the baffle being too high.

[0022] Optionally, an oil purification device and a one-way valve at the separator outlet are provided in the connecting pipeline between the separator outlet and the heat recovery unit.

[0023] By adopting the above technical solution, the one-way valve at the outlet of the oil purification device separator is installed on the connecting pipeline between the separator outlet and the heat recovery unit. The one-way valve at the outlet of the oil purification device separator effectively prevents oil in the heat recovery unit or subsequent oil circuit from flowing back into the separator due to pressure fluctuations or backflow impacts. This ensures stable processing conditions inside the separator and avoids the reduction in separation efficiency or equipment damage caused by oil backflow.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. By setting up oil-water collection tanks, oil-water separation tanks, gear oil pumps, etc., this solution achieves multiple advantages of oil-water separation system by optimizing the oil-water separation process, simplifying operation steps, improving turbine oil recovery efficiency and reducing waste oil volume. The system features a simple process, easy operation, improved turbine oil utilization efficiency and lifespan, simplified steps and reduced waste oil volume.

[0026] 2. By setting a mechanical float, the liquid level change in the oil-water collection tank can be monitored in real time. When the oil-water mixture reaches the preset liquid level, the subsequent control process (such as shutting down the oil pump, opening the valve, etc.) can be triggered in time to ensure that the oil-water mixture enters the oil-water separator for processing at the best time, thereby enhancing the automation level and response speed of the system.

[0027] 3. By setting up drainage channels and drain valves for oil-water separation devices, the discharge process of the separated water phase can be precisely controlled. This allows for timely discharge of clean water after oil-water separation to maintain system water level balance, while also preventing incompletely separated oil from mixing into the discharged water body during the process. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the oil purification and separation system in the embodiments of this application.

[0029] Figure 2 This is a structural diagram illustrating the internal structure of the oil-water separator in the embodiments of this application.

[0030] Explanation of reference numerals in the attached diagram: 1. Water injection valve for oil purification separator; 2. Manual oil outlet valve for oil-water separator; 3. Inlet valve for oil purification separator; 4. Solenoid ball valve for oil inlet of oil purification separator; 5. One-way valve for oil purification separator outlet; 6. Solenoid ball valve for oil outlet of oil purification separator; 7. Air vent at the top of oil purification heater; 8. Oil drain valve at the bottom of oil purification heater; 9. Y-type filter for oil purification; 10. Oil inlet ball valve for oil purification; 11. Manual oil inlet valve for oil filter; 12. Primary oil drain valve for oil filter inlet pipe; 13. Secondary oil drain valve for oil filter inlet pipe; 14. Oil purification outlet valve; 15. Oil purification outlet bypass valve; 16. Oil purification heat recovery unit outlet check valve; 17. Oil purification heat recovery unit outlet ball valve; 18. Oil purification heater inlet valve; 19. Oil-water separator inlet ball valve; 20. Oil-water separator drain valve; 21. Pressure gauge; 22. Mechanical float; 23. Oil pump; 24. Oil purification heater; 25. Heat recovery unit; 26. Separator; 27. Oil-water collection tank; 28. Oil-water separator tank; 29. ​​Oil-water mixture buffer zone; 30. Oil-water separation zone; 31. Drainage zone; 32. Gear oil pump; 33. Front baffle plate; 34. Middle baffle plate; 35. Rear baffle plate; 36. Tail oil baffle plate; 37. Drainage channel. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0032] This application discloses a centrifugal oil purification centrifuge tank outlet waste oil water treatment device. (Refer to...) Figure 1 The centrifugal oil purification centrifuge tank outlet waste oil and water treatment device includes an oil and water collection tank 27, which is used to collect the oil and water composition flowing out of the separator 26. The oil and water collection tank 27 is installed at the outlet of the separator 26. In this embodiment, the structure of the separator 26 is the prior art. At the same time, the separation system with the separator 26 as the core component is also equipped with components such as an oil purification heater 24 and a heat recovery unit 25 to form a complete separation system.

[0033] Reference Figure 1 The separation system has different process flows: 1. Oil bypass isolation mode (this mode is used to isolate the separator 26 of the oil purification device. When the separator 26 needs to be disassembled and cleaned), oil comes to the oil station, the oil filter inlet manual door 11 is opened, the oil passes through the oil purification inlet ball valve 10, the oil purification Y-type filter 9 and enters the oil pump 23. After opening the oil purification outlet bypass valve 15, the oil enters the oil station.

[0034] 2. Normal separation working mode (oil pressure rises slowly during startup). When pressure gauge 21 does not reach 0.1MPa, oil enters the oil circuit and oil station. Open the manual oil inlet valve 11 of the oil filter. The oil passes through the oil purification inlet ball valve 10 and the oil purification Y-type filter 9 into the oil pump 23. Open the oil purification outlet valve 14. The oil enters the heat recovery unit 25. The oil passes through the oil purification heater inlet valve 18 and enters the oil purification heater 24. At this time, the oil purification separator outlet solenoid ball valve 6 is open. The oil purification separator outlet check valve 5 is a check valve. The oil passes through the oil purification separator outlet solenoid ball valve 6 into the heat recovery unit 25. Open the oil purification heat recovery unit outlet check valve 16. After passing through the oil purification heat recovery outlet ball valve 17, the oil enters the oil station.

[0035] 3. Normal separation working mode (oil pressure stable, slowly rising to 0.1MPa): When pressure gauge 21 reaches 0.1MPa, during normal operation, oil from the oil station is supplied. The manual oil inlet valve 11 of the oil filter is opened, and the oil passes through the oil purification inlet ball valve 10 and the oil purification Y-type filter 9 into the oil pump 23. The oil purification outlet valve 14 is opened, and the oil enters the heat recovery unit 25. The oil then passes through the oil purification heater inlet valve 18 and enters the oil purification heater 24. At this time, the oil purification device separator inlet solenoid ball valve 4 is open. In this state, the oil passes through the inlet valve 3 of the oil purification separator and enters the oil purification device separator 26. At this time, the oil outlet solenoid ball valve 6 of the oil purification device separator is in the closed state. The oil passes through the outlet check valve 5 of the oil purification device separator and enters the heat recovery unit 25. The outlet check valve 16 of the oil purification heat recovery unit is opened, and the oil passes through the outlet ball valve 17 of the oil purification heat recovery unit and enters the oil station. This device is an improvement made by the fact that after the oil passes through the oil purification device separator 26, the oil-water mixture will flow from the outlet of the oil purification device separator 26.

[0036] Reference Figure 1 The oil-water collection tank 27, located away from the separator 26, is connected to an oil-water separator 28 via a pipeline. In this example, the oil-water separator 28 has a hollow internal structure, and its actual dimensions can be designed to be 60*40*30cm. A mechanical float 22 is installed inside the oil-water collection tank 27, and an inlet ball valve 19 for the oil-water separator is installed on the connecting pipeline between the oil-water collection tank 27 and the oil-water separator 28. The mechanical float 22 can monitor the liquid level changes in the oil-water collection tank 27 in real time. When the oil-water mixture reaches the preset liquid level, it can promptly trigger subsequent control processes (such as shutting down the oil pump 23 or opening the valve), ensuring that the oil-water mixture enters the oil-water separator 28 for processing at the optimal time. This enhances the system's automation and response speed. Simultaneously, the inlet ball valve 19 for the oil-water separator can precisely control the transport process of the oil-water mixture from the oil-water collection tank 27 to the oil-water separator 28, enabling flexible operation of flow regulation and opening / closing.

[0037] Reference Figure 1 and Figure 2 The bottom wall inside the oil-water separator 28 is provided with a middle baffle 34 and a tail oil barrier 36 arranged at intervals along the flow direction of the oil-water mixture. The middle baffle 34 and the tail oil barrier 36 form an oil-water mixture buffer zone 29, an oil-water separation zone 30 and a drainage zone 31 inside the oil-water separator 28. The oil-water mixture buffer zone 29, the oil-water separation zone 30 and the drainage zone 31 are arranged sequentially along the flow direction of the oil-water mixture. At the same time, a front oil baffle 33 and a rear oil baffle 35 are installed on the top wall of the oil-water separator 28. The front oil baffle 33 and the rear oil baffle 35 are respectively arranged in the oil-water mixture buffer zone 29 and the oil-water separation zone 30.

[0038] Reference Figure 1 and Figure 2 In this embodiment, the height of the baffle 34 and the tail oil barrier 36 is 2 / 3 to 3 / 4 of the height of the oil-water separator 28. The upper edges of the middle baffle 34 and the tail oil barrier 36 are at the same horizontal level, and the lower edges of the front oil baffle 33 and the rear oil baffle 35 are at the same horizontal level. The lower edges of the front oil baffle 33 and the rear oil baffle 35 are lower than the upper edges of the middle baffle 34 and the tail oil barrier 36. The middle baffle 34, the tail oil barrier 36, the front oil baffle 33, and the rear oil baffle 35 can be adjusted according to their own drainage needs; this ensures that the oil-water mixture is separated in the oil-water separator. A clear liquid level gradient and flow path are formed within 28: the mixture first enters the oil-water mixture buffer zone 29, and then flows into the oil-water separation zone 30 below the front baffle 33. Because the lower edge of the front baffle 33 is lower than the upper edge of the middle baffle 34, a stable overflow port is formed, which not only avoids the mixture directly impacting the separated oil layer, but also ensures that the separated water phase can flow into the drainage zone 31 in a directional manner through the height difference between the rear baffle 35 and the tail oil barrier 36. This structure enhances the oil-water interface stratification effect, reduces the risk of secondary oil droplet entrainment, and significantly improves the processing accuracy of oil-water separation.

[0039] Reference Figure 1 and Figure 2 A gear oil pump 32 is installed on the top of the oil-water separator 28. The suction end of the gear oil pump 32 passes through the oil-water separator 28 and is located in the oil-water separation zone 30. The outlet end of the gear oil pump 32 is connected to the separator 26. At the same time, a manual oil outlet valve 2 of the oil-water separation device is installed at the outlet end of the gear oil pump 32. The manual oil outlet valve 2 of the oil-water separation device can flexibly control the turbine oil flow rate and on / off status output by the gear oil pump 32. It can also manually cut off the oil circuit in the event of equipment maintenance or emergency to avoid oil leakage or equipment overload, thereby enhancing the safety of system operation and the convenience of maintenance.

[0040] Reference Figure 1 and Figure 2An oil purification device, a one-way valve 5 at the outlet of the separator 26, is installed in the connecting pipeline between the outlet of the separator 26 and the heat recovery unit 25. This effectively prevents oil in the heat recovery unit 25 or subsequent oil circuit from flowing back into the separator 26 due to pressure fluctuations or backflow impacts. This ensures stable processing conditions inside the separator 26 and avoids a decrease in separation efficiency or equipment damage caused by oil backflow.

[0041] Reference Figure 2 The drainage area 31 of the oil-water separator 28 is connected to a drainage channel 37, which extends out of the oil-water separator 28. An oil-water separation device drain valve 20 is installed on the drainage channel 37. The discharge process of the water phase after separation can be precisely controlled. After the oil-water separation is completed, the drain valve can be opened to discharge clean water in time to maintain the system water level balance. The valve can also be closed during the process to prevent incompletely separated oil from mixing into the discharge water body.

[0042] The implementation principle of the centrifugal oil purification centrifuge tank outlet waste oil and water treatment device in this application embodiment is as follows: After the oil is purified by the separator 26, the oil and water mixture will flow from the outlet of the separator 26 into the oil and water collection tank 27. When the oil and water mixture reaches the liquid level, the mechanical float 22 will be raised, thereby controlling the oil pump to shut off. At this time, the inlet ball valve 19 of the oil and water separation device is opened, and the oil and water mixture enters the oil and water separation tank 28. The oil and water mixture will come to the oil and water mixture buffer zone 29. In this area, the mixture will form an emulsion state at normal temperature and pressure. This emulsion state of oil and water mixture will continue to flow, passing below the front baffle plate 33, and then flowing into the oil and water separation zone 30. In the oil and water separation zone 30, the mixture is still maintained at normal temperature and pressure. Under the influence of gravity, the turbine oil, being less dense than water, begins to separate. The turbine oil, being less dense, floats above the oil-water separation zone 30, while the water flows through the rear baffle plate 35 into the drainage zone 31. After gravity sedimentation, the turbine oil is pressurized to 0.1 MPa by the gear oil pump 32, opening the manual oil outlet valve 2 of the oil-water separator and entering the oil purification separator 26. At this time, the oil outlet solenoid ball valve 6 of the oil purification separator is closed, and the oil enters the heat recovery unit 25 through the oil purification separator outlet check valve 5. The oil then passes through the oil purification heat recovery unit outlet check valve 17 and enters the oil station.

[0043] By incorporating an oil-water collection tank 27, an oil-water separator 28, and a gear oil pump 32, this solution achieves multiple advantages for the oil-water separation system, including a simple process, easy operation, improved turbine oil utilization efficiency and lifespan, simplified procedures, and reduced waste oil volume. These advantages are achieved through optimizing the oil-water separation process, simplifying operation steps, improving turbine oil recovery efficiency, and reducing waste oil volume.

[0044] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A centrifugal oil purification centrifuge outlet waste oil and water treatment device, comprising an oil and water collection tank arranged at the outlet of the separator, characterized in that: The oil-water collection tank is connected to an oil-water separator. The oil-water separator has a hollow interior. The bottom wall of the oil-water separator is equipped with a middle baffle and a tail oil barrier plate arranged at intervals along the flow direction of the oil-water mixture. The middle baffle and the tail oil barrier plate form an oil-water mixture buffer zone, an oil-water separation zone, and a drainage zone within the oil-water separator. The top wall of the oil-water separator is equipped with a front oil baffle and a rear oil baffle, which are respectively arranged in the oil-water mixture buffer zone and the oil-water separation zone. A gear oil pump is installed on the oil-water separator. The suction end of the gear oil pump is located in the oil-water separation zone, and the outlet end of the gear oil pump is connected to a separator. The separator is equipped with a heat recovery unit for connection to the oil station.

2. The centrifugal oil purification centrifuge tank outlet waste oil and water treatment device according to claim 1, characterized in that: The oil-water collection tank is equipped with a mechanical float for detecting the level of the oil-water mixture.

3. The centrifugal oil purification centrifuge tank outlet waste oil and water treatment device according to claim 2, characterized in that: The connecting pipeline between the oil-water collection tank and the oil-water separator is equipped with an inlet ball valve for the oil-water separator.

4. The centrifugal oil purification centrifuge tank outlet waste oil and water treatment device according to claim 1, characterized in that: The gear oil pump outlet is equipped with an oil-water separation device manual valve.

5. The centrifugal oil purification centrifuge tank outlet waste oil and water treatment device according to claim 1, characterized in that: The drainage area of ​​the oil-water separator is connected to a drainage channel, and the drainage channel is equipped with a drain valve for the oil-water separator.

6. The centrifugal oil purification centrifuge tank outlet waste oil water treatment device according to claim 1, characterized in that: The lower edges of the front and rear oil baffles are lower than the upper edges of the middle baffle and the tail oil barrier. The lower edges of the front and rear oil baffles are at the same horizontal height, and the upper edges of the middle baffle and the tail oil barrier are at the same horizontal height.

7. The centrifugal oil purification centrifuge tank outlet waste oil water treatment device according to claim 6, characterized in that: The height of the middle baffle and the tail oil barrier is 2 / 3 to 3 / 4 of the height of the oil-water separator.

8. The centrifugal oil purification centrifuge tank outlet waste oil water treatment device according to claim 1, characterized in that: An oil purification device and a one-way valve at the separator outlet are installed in the connecting pipeline between the separator outlet and the heat recovery unit.

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