Multifunctional device capable of continuously and quickly discharging sewage oil

Abstract

The utility model relates to the technical field of heavy oil production in the coal chemical industry, and discloses a multifunctional continuous and rapid oil dirt discharging device which comprises a manual oil discharging device and an automatic oil discharging device connected with the manual oil discharging device. The pressure equalizing tank is connected to the outlet end of the oil discharge cup; the underground dirty oil tank is connected with the outlet end of the pressure equalizing tank; the automatic oil discharge device comprises a pneumatic diaphragm pump, the outlet end of the pneumatic diaphragm pump is connected with a pressure equalizing tank, the pneumatic diaphragm pump is connected with a dirty oil ton barrel, a pneumatic diaphragm pump outlet valve and an oil inlet valve are arranged at the outlet end of the pneumatic diaphragm pump, and a pneumatic diaphragm pump outlet drain valve is further arranged at the outlet end of the pneumatic diaphragm pump; according to the device, by adjusting the parameters of the pneumatic diaphragm pump and the opening degree of the valve, the discharge requirements of different dirty oil can be met, the device has wide applicability, work is stable, the conveying efficiency is high, the oil discharge efficiency can be remarkably improved, and the operation time is shortened.

Description

Technical Field

[0001] This utility model belongs to the field of coal chemical heavy oil production technology, specifically relating to a multifunctional device for continuous and rapid oil discharge. Background Technology

[0002] Traditional methods of transporting and discharging waste oil in petrochemical and coal tar hydrogenation industries involve densely packed pipelines. Large amounts of waste oil are generated during on-site operations and equipment maintenance. Temporary storage on-site poses significant safety hazards, and the waste oil cannot be transferred out of the plant area immediately. Waste oil treatment is costly, and most waste oil is handled manually, resulting in extremely low efficiency.

[0003] Although Chinese patent CN221368828U describes a portable underground sludge discharge device that includes an online oil discharge device, which consists of an oil discharge cup and a pressure equalization tank connected to the outlet of the oil discharge cup, this device can only perform manual oil discharge. This results in low sludge treatment efficiency, long operation time, and requires operators to operate it online in real time. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned problems and provide a multifunctional, continuous and rapid oil draining device that can perform both manual and automatic oil draining to achieve continuous and rapid oil draining to the sludge device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This utility model provides a multifunctional continuous and fast oil drainage device, including a manual oil drainage device and an automatic oil drainage device connected to the manual oil drainage device. The manual oil drainage device includes an oil drainage cup, a pressure equalization tank connected to the outlet end of the oil drainage cup, and an underground oily waste tank connected to the outlet end of the pressure equalization tank.

[0007] The automatic oil discharge device includes a pneumatic diaphragm pump, the outlet end of which is connected to a pressure equalization tank, the pneumatic diaphragm pump is connected to a sludge oil ton, the outlet end of which is equipped with a pneumatic diaphragm pump outlet valve and an oil inlet valve, and the outlet end of which is also equipped with a pneumatic diaphragm pump outlet drain valve.

[0008] The pressure equalization tank is equipped with an exhaust valve at the top, the bottom of the pressure equalization tank is connected to the inlet manifold of the underground sludge tank, and the outlet end of the inlet manifold of the underground sludge tank is connected to the underground sludge tank.

[0009] A further improvement of this invention is that the pneumatic diaphragm pump is connected to the sludge tank via a flexible hose.

[0010] A further improvement of this utility model is that the oil drain cup has a semi-circular open structure, an oil drain port is connected to the top of the oil drain cup, and an oil drain valve is provided at the outlet end of the oil drain cup.

[0011] A further improvement of this invention is that the outer walls of both the oil drain cup and the pressure equalization tank are wrapped with a layer of heat-insulating cotton.

[0012] A further improvement of this invention is that both the oil drain cup and the pressure equalization tank are equipped with steam heating.

[0013] A further improvement of this utility model is that a pressurization pipeline is connected to the inlet end of the pressure equalization tank, and an oil discharge valve group is provided at the outlet end of the pressure equalization tank.

[0014] A further improvement of this invention is that a main feed valve is provided at the inlet end of the underground sludge tank.

[0015] A further improvement of this utility model is that the underground sludge tank is equipped with a steam heat tracing supply and a steam heat tracing return system.

[0016] A further improvement of this utility model is that the underground sludge tank is connected to an underground sludge tank nitrogen pressurization line and an underground sludge tank venting pipeline.

[0017] A further improvement of this utility model is that an underground oily waste tank pump is installed on the top of the underground oily waste tank.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This invention provides a multifunctional, continuous, and rapid oil drainage device. By combining a manual drainage device and an automatic drainage device, it offers multiple operating modes. Introducing a pneumatic diaphragm pump enables continuous and rapid discharge of sludge. The automatic drainage device includes a pneumatic diaphragm pump outlet valve, a pneumatic diaphragm pump outlet drain valve, and an oil inlet valve, allowing operators to flexibly adjust the drainage speed and flow rate according to actual needs, ensuring the stability and controllability of the drainage process. The equalizing tank helps maintain stable system pressure, preventing problems such as poor drainage or oil overflow caused by pressure fluctuations. Simultaneously, the vent valve at the top of the equalizing tank can be opened during material feeding to release accumulated gas, ensuring smooth drainage. By adjusting the parameters of the pneumatic diaphragm pump and the valve opening, this device can adapt to different sludge discharge requirements, making it widely applicable, stable in operation, and highly efficient, significantly improving drainage efficiency and reducing operation time.

[0020] Furthermore, the pneumatic diaphragm pump is connected to the sludge tank via a flexible hose. This flexible hose allows for some flexibility in the tank's position, freeing it from being confined to a fixed location. In actual operation, the length of the flexible hose can be easily adjusted to accommodate sludge tanks at different positions and heights, greatly improving operational convenience. Attached Figure Description

[0021] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the present invention and do not specifically limit the shapes and proportions of the components of the present invention.

[0022] Figure 1 A schematic diagram of a multifunctional, continuous, and rapid waste oil discharge device provided by this utility model.

[0023] The components include: 1. Sludge discharge port; 2. Drain cup; 3. Drain valve; 4. Exhaust valve; 5. Pressure equalization tank; 6. Steam tracing; 7. Pressurization pipeline; 8. Drain valve assembly; 9. Main feed valve; 10. Steam tracing supply; 11. Steam tracing return; 12. Nitrogen pressurization line for underground sludge tank; 13. Vent pipeline for underground sludge tank; 14. Underground sludge tank pump; 15. Main feed pipe for underground sludge tank; 16. Underground sludge tank; 17. Pneumatic diaphragm pump; 18. Flexible hose; 19. Sludge tank; 20. Pneumatic diaphragm pump outlet valve; 21. Pneumatic diaphragm pump outlet drain valve; 22. Oil inlet valve. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the utility model. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0029] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] The present invention will now be described in further detail with reference to the accompanying drawings:

[0031] like Figure 1 As shown, this utility model provides a multifunctional continuous and rapid oil sludge discharge device, including an oil sludge discharge port 1, an oil discharge cup 2, an oil discharge valve 3, an exhaust valve 4, a pressure equalization tank 5, a steam tracing 6, a pressurization pipeline 7, an oil discharge valve group 8, a main feed valve 9, a steam tracing supply 10, a steam tracing return 11, a nitrogen pressurization line for the underground oil sludge tank 12, a venting pipeline for the underground oil sludge tank 13, an underground oil sludge tank pump 14, a main feed pipe for the underground oil sludge tank 15, an underground oil sludge tank 16, a pneumatic diaphragm pump 17, a flexible connecting hose 18, an oil sludge ton 19, a pneumatic diaphragm pump outlet valve 20, a pneumatic diaphragm pump outlet drain valve 21, and an oil inlet valve 22;

[0032] The multifunctional continuous and rapid oil discharge device includes a manual oil discharge device and an automatic oil discharge device connected to the manual oil discharge device. The manual oil discharge device includes an oil discharge cup 2, a pressure equalization tank 5 connected to the outlet end of the oil discharge cup 2, and an underground oily waste tank 16 connected to the outlet end of the pressure equalization tank 5. Both the oil discharge cup 2 and the pressure equalization tank 5 are equipped with steam heating 6.

[0033] The automatic oil discharge device includes a pneumatic diaphragm pump 17. The outlet end of the pneumatic diaphragm pump 17 is connected to the pressure equalization tank 5. The pneumatic diaphragm pump 17 is connected to the sludge oil ton 19 through a flexible connecting hose 18. The outlet end of the pneumatic diaphragm pump 17 is equipped with a pneumatic diaphragm pump outlet valve 20 and an oil inlet valve 22. The outlet end of the pneumatic diaphragm pump 17 is also equipped with a pneumatic diaphragm pump outlet drain valve 21.

[0034] The oil discharge cup 2 has a semi-circular open structure, which is convenient to operate and prevents oil sludge from splashing, thus meeting the requirements for continuous operation. The top of the oil discharge cup 2 is connected to the oil sludge discharge port 1, and the outlet end of the oil discharge cup 2 is equipped with an oil discharge valve 3; the top of the pressure equalization tank 5 is equipped with an exhaust valve 4, the bottom of the pressure equalization tank 5 is connected to the underground oil sludge tank inlet manifold 15, and the outlet end of the underground oil sludge tank inlet manifold 15 is connected to the underground oil sludge tank 16; the inlet end of the pressure equalization tank 5 is connected to a pressurization pipeline 7, and the outlet end of the pressure equalization tank 5 is equipped with an oil discharge valve assembly 8.

[0035] The underground oily waste tank 16 is equipped with a feed valve 9 at the inlet end, and is equipped with a steam heat tracing supply 10 and a steam heat tracing return 11. The underground oily waste tank 16 is connected to an underground oily waste tank nitrogen pressurization line 12 and an underground oily waste tank venting pipeline 13. The underground oily waste tank 16 is equipped with an underground oily waste tank pump 14 at the top.

[0036] As a preferred option, the outer walls of both the oil drain cup 2 and the pressure equalization tank 5 are wrapped with a layer of heat-insulating cotton to prevent heat loss during heat tracing and to prevent burns to operators.

[0037] Example 1

[0038] A multifunctional, continuous, and rapid oil discharge device includes a manual oil discharge device and an automatic oil discharge device connected to the manual oil discharge device. The manual oil discharge device includes an oil discharge cup 2, a pressure equalization tank 5 connected to the outlet end of the oil discharge cup 2, and an underground sludge tank 16 connected to the outlet end of the pressure equalization tank 5. The automatic oil discharge device includes a pneumatic diaphragm pump 17, the outlet end of which is connected to the pressure equalization tank 5. The pneumatic diaphragm pump 17 is also connected to a sludge tank 19. The outlet end of the pneumatic diaphragm pump 17 is equipped with a pneumatic diaphragm pump outlet valve 20 and an oil inlet valve 22. The outlet end of the pneumatic diaphragm pump 17 is also equipped with a pneumatic diaphragm pump outlet drain valve 21. The pressure equalization tank 5 is equipped with an exhaust valve 4 at the top and the bottom of the pressure equalization tank 5 is connected to the underground sludge tank inlet manifold 15. The outlet end of the underground sludge tank inlet manifold 15 is connected to the underground sludge tank 16.

[0039] By combining manual and automatic oil draining devices, multiple operating modes are provided. The introduction of a pneumatic diaphragm pump 17 enables continuous and rapid discharge of sludge. The automatic oil draining device includes a pneumatic diaphragm pump outlet valve 20, a pneumatic diaphragm pump outlet drain valve 21, and an oil inlet valve 22, allowing operators to flexibly adjust the draining speed and flow rate according to actual needs, ensuring the stability and controllability of the draining process. The equalizing tank 5 helps maintain stable system pressure, preventing problems such as poor draining or oil overflow caused by pressure fluctuations. Simultaneously, the vent valve 4 at the top of the equalizing tank 5 can be opened during material feeding to release accumulated gas, ensuring smooth oil draining. By adjusting the parameters of the pneumatic diaphragm pump 17 and the valve opening, this device can adapt to different sludge discharge requirements, making it widely applicable, stable in operation, and highly efficient, significantly improving draining efficiency and reducing operation time.

[0040] Example 2

[0041] A multifunctional, continuous, and rapid oil sludge discharge device includes an oil sludge discharge port 1, an oil discharge cup 2, an oil discharge valve 3, an exhaust valve 4, a pressure equalization tank 5, a steam tracing system 6, a pressurization pipeline 7, an oil discharge valve assembly 8, a main feed valve 9, a steam tracing supply 10, a steam tracing return 11, a nitrogen pressurization line for the underground oil sludge tank 12, a venting pipeline for the underground oil sludge tank 13, an underground oil sludge tank pump 14, a main feed pipe for the underground oil sludge tank 15, an underground oil sludge tank 16, a pneumatic diaphragm pump 17, a flexible connecting hose 18, an oil sludge ton container 19, a pneumatic diaphragm pump outlet valve 20, a pneumatic diaphragm pump outlet drain valve 21, and an oil inlet valve 22.

[0042] The oil drain cup 2 is connected to the oil drain port 1, which can accept oil of different properties. The oil drain cup 2 has a semi-circular open structure, which is convenient to operate and prevents oil from splashing, thus meeting the requirements of continuous operation. The oil drain cup 2 is equipped with a steam heating 6 on the outside, which can prevent oil of different properties from condensing and sticking to the wall. The outer wall of the oil drain cup 2 is also wrapped with a layer of heat insulation cotton to prevent heat loss and prevent burns to operators.

[0043] An oil discharge valve 3 is installed at the outlet end of the oil discharge cup 2, and the outlet end of the oil discharge cup 2 is connected to a pressure equalization tank 5. The pressure equalization tank 5 is equipped with an exhaust valve 4, which needs to be opened when adding material. The exhaust valve 4 needs to be opened in advance before the oil discharge valve 3 is opened to prevent the oil from flowing out of the oil discharge cup 2. After the oil is discharged, the exhaust valve 4 and the oil discharge valve 3 need to be closed. The pressure equalization tank 5 is equipped with a steam tracing 6. The inlet end of the pressure equalization tank 5 is connected to a pressurization line 7, which is a pre-pressurization line that can be opened as needed. If the material is not flowing smoothly, it can be pressurized to ensure smooth material flow. An oil discharge valve group 8 is installed at the outlet end of the pressure equalization tank 5. When the oil discharge valve group 8 is opened, the sludge oil can flow into the underground sludge oil tank 16 by its own gravity and the underground sludge oil tank inlet main pipe 15, which is convenient and quick.

[0044] The bottom of the equalizing tank 5 is connected to the inlet manifold 15 of the underground sludge tank. The outlet end of the inlet manifold 15 of the underground sludge tank is connected to the underground sludge tank 16. The inlet end of the underground sludge tank 16 is equipped with a feed valve 9, which is kept open and ready for use. In case of special circumstances, the underground sludge tank 16 can be isolated.

[0045] The underground sludge tank 16 is equipped with a steam heat tracing supply 10 and a steam heat tracing return 11 to ensure good fluidity of the sludge inside the tank. The underground sludge tank pump 14 operates normally and delivers a stable flow rate. The underground sludge tank 16 is equipped with an independent underground sludge tank nitrogen pressurization line 12 and an underground sludge tank venting pipeline 13, which facilitates pressurization and replacement, and makes maintenance more convenient and simple.

[0046] The outlet end of the pneumatic diaphragm pump 17 is connected to the equalizing tank 5. The pneumatic diaphragm pump 17 is connected to the sludge tank 19 via a flexible hose 18. The driving air source for the pneumatic diaphragm pump 17 is factory air, effectively reducing equipment operating costs. Its simple operation greatly improves oil discharge efficiency. The flexible hose 18 solves the distance problem between the sludge tank 19 and the pneumatic diaphragm pump 17, increasing operating space. The pneumatic diaphragm pump 17 is equipped with an outlet valve 20 and an inlet valve 22, which effectively isolate the system when oil is not being discharged through the pneumatic diaphragm pump 17, preventing gasoline evaporation and leakage from the equalizing tank 5. The pneumatic diaphragm pump 17 is equipped with an outlet drain valve 21. After oil discharge, nitrogen is connected from this point to purge the oil discharge pipeline in a timely manner, preventing sludge blockage in the pipeline. With the drain valve 3 closed, the pneumatic diaphragm pump 17, connected to the equalizing tank 5 via the inlet valve 22, forms an independent oil discharge system that continuously and stably performs automatic oil discharge.

[0047] Working principle:

[0048] This utility model's multifunctional, continuous, and rapid oil drainage device can meet both manual and automatic oil extraction needs. In manual oil extraction, the operator first adds the oil to be discharged into the oil discharge cup 2 through the oil discharge port 1. Then, the operator opens the exhaust valve 4 to release the gas from the equalization tank 5, and then opens the oil discharge valve 3. The oil is discharged from the oil discharge cup 2 into the equalization tank 5. The operator then closes the exhaust valve 4 and the oil discharge valve 3 in sequence, and slowly opens the oil discharge valve assembly 8 to make the pressure inside the equalization tank 5 the same as the pressure in the underground oil tank inlet manifold 15. The oil flows into the underground oil tank 16 by its own weight and the oil in the underground oil tank inlet manifold 15. After completing the operation, the operator slowly closes the oil discharge valve assembly 8, completing the entire oil drainage process. Repeating the operation allows for continuous manual oil drainage. When problems such as poor oil drainage and oil residue sticking to the wall occur, ensure that the oil drain port 1, the exhaust valve 4 and the oil drain valve group 8 are all closed, then put the pressurization pipeline 7 into operation and slowly open the oil drain valve group 8 to achieve pressurized oil drainage.

[0049] When using the multifunctional, continuous, and quick-discharging sludge oil device for automatic oil extraction, first securely connect one end of the pneumatic diaphragm pump 17 and the flexible hose 18 with a quick connector. Place the other end of the flexible hose 18 into the sludge oil container 19. Check and confirm that the pneumatic diaphragm pump outlet drain valve 21 and the oil drain valve 3 are closed to prevent sludge oil leakage and backflow. Open the oil drain valve group 8 and the oil inlet valve 22. Finally, open the pneumatic diaphragm pump outlet valve 20 to activate the pneumatic diaphragm pump 17 and start continuous sludge oil discharge. Repeat this process until the sludge oil container 19 is empty, then replace it with the next container of sludge oil. After the sludge oil discharge is completed, first turn off the pneumatic diaphragm pump 17's drive air source, then close the pneumatic diaphragm pump outlet valve 20 and the oil inlet valve 22 to cut off the inlet and outlet channels of the sludge oil. To prevent residual oil in the pipeline from causing blockage or environmental pollution, nitrogen or other inert gases can be used to purge the pipeline. Open the pneumatic diaphragm pump outlet drain valve 21, connect nitrogen to purge the pipeline until there is no residual oil in the pipeline, close the drain valve group 8, close the inlet valve 22, and finally close the pneumatic diaphragm pump outlet drain valve 21.

[0050] Many embodiments and applications beyond the examples provided will be apparent to those skilled in the art upon reading the foregoing description. Therefore, the scope of this teaching should not be determined by reference to the foregoing description, but rather by reference to the foregoing claims and the full scope of their equivalents. For purposes of completeness, all articles and references, including patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the foregoing claims is not intended as a waiver of that subject matter, nor should it be construed as an indication that the applicant has not considered that subject matter as part of the disclosed utility model subject matter.

[0051] The above content provides a further detailed description of this utility model. It should not be considered that the specific embodiments of this utility model are limited to this. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of this utility model, and all such deductions or substitutions should be considered to fall within the scope of protection of this utility model as defined by the submitted claims.

Claims

1. A multifunctional, continuous, and rapid oil discharge device, characterized in that, It includes a manual oil draining device and an automatic oil draining device connected to the manual oil draining device. The manual oil draining device includes an oil draining cup (2), a pressure equalization tank (5) connected to the outlet end of the oil draining cup (2), and an underground sludge tank (16) connected to the outlet end of the pressure equalization tank (5). The automatic oil discharge device includes a pneumatic diaphragm pump (17), the outlet end of which is connected to a pressure equalization tank (5), the pneumatic diaphragm pump (17) is connected to a sludge oil ton (19), the outlet end of which is equipped with a pneumatic diaphragm pump outlet valve (20) and an oil inlet valve (22), and the outlet end of which is also equipped with a pneumatic diaphragm pump outlet drain valve (21). The pressure equalization tank (5) is equipped with an exhaust valve (4) at the top, the bottom of the pressure equalization tank (5) is connected to the underground sludge tank feed main pipe (15), and the outlet end of the underground sludge tank feed main pipe (15) is connected to the underground sludge tank (16).

2. The multifunctional, continuous, and rapid oil drainage device according to claim 1, characterized in that, The pneumatic diaphragm pump (17) is connected to the sludge tank (19) via a flexible hose (18).

3. The multifunctional, continuous, and rapid oil drainage device according to claim 1, characterized in that, The oil drain cup (2) has a semi-circular open structure. The oil drain cup (2) is connected to the upper part of the oil drain cup (2) and the oil drain valve (3) is provided at the outlet end of the oil drain cup (2).

4. The multifunctional, continuous, and rapid oil drainage device according to claim 1, characterized in that, The outer walls of the oil drain cup (2) and the pressure equalization tank (5) are both wrapped with a layer of heat insulation cotton.

5. The multifunctional, continuous, and rapid oil drainage device according to claim 1, characterized in that, Both the oil drain cup (2) and the pressure equalization tank (5) are equipped with steam tracing (6).

6. The multifunctional, continuous, and rapid oil drainage device according to claim 1, characterized in that, The inlet end of the equalizing tank (5) is connected to a pressurization pipeline (7), and the outlet end of the equalizing tank (5) is provided with an oil drain valve group (8).

7. The multifunctional, continuous, and rapid oil drainage device according to claim 1, characterized in that, The inlet end of the underground sludge tank (16) is equipped with a feed valve (9).

8. The multifunctional, continuous, and rapid oil discharge device according to claim 1, characterized in that, The underground oily waste tank (16) is equipped with a steam tracing supply (10) and a steam tracing return (11).

9. A multifunctional, continuous, and rapid oil discharge device according to claim 1, characterized in that, The underground oily waste tank (16) is connected to an underground oily waste tank nitrogen pressurization line (12) and an underground oily waste tank venting pipeline (13).

10. A multifunctional, continuous, and rapid oil discharge device according to claim 1, characterized in that, The underground oily waste tank (16) is equipped with an underground oily waste tank pump (14) on top.

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