Oil-water separation device for ship bilge water

Abstract

The utility model discloses an oil-water separation device for ship bilge water, and relates to the field of ship separation structures, the oil-water separation device comprises a plurality of partition plates, the partition plates are arranged on a cabinet body along the flowing direction of oil-water mixed liquid, all the partition plates divide the cabinet body into a plurality of oil-water separation areas, and liquid flowing holes are formed between the odd number of partition plates and the lower bottom wall of the cabinet body; liquid flowing holes are formed between the even number of partition plates and the upper top wall of the cabinet body; oil discharge pipes are arranged in the odd oil-water separation areas, and water discharge pipes are arranged in the even oil-water separation areas; the separation device is based on the physical characteristics of oil and water, the density difference of oil and water is utilized, oil drops float upwards and are separated in a standing or slow flow mode, and the whole device is simple in structure, low in manufacturing cost and relatively convenient to maintain and clean.

Description

Technical Field

[0001] This invention belongs to the field of ship separation structures, and more specifically, relates to a ship bilge water-oil-water separation device. Background Technology

[0002] There are various existing methods for separating oil and water in ships, including physical separation, coalescence separation, filtration separation, air flotation separation, chemical treatment and electrostatic separation. However, all of these methods have drawbacks such as complex structure of oil-water separation devices, high cost and complicated maintenance and cleaning. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a ship bilge oil-water separation device. This separation device is based on the physical properties of oil and water, and utilizes the density difference between oil and water to separate oil droplets by allowing them to float to the surface through static or slow-flowing methods. The entire device has a simple structure, low manufacturing cost, and is relatively easy to maintain and clean.

[0004] To achieve the above objectives, the present invention provides a ship bilge water-oil-water separation device, comprising:

[0005] The cabinet has an inlet pipe at one end and an overflow pipe at the other end.

[0006] Multiple partitions are arranged on the cabinet along the flow direction of the oil-water mixture, and the multiple partitions divide the cabinet into multiple oil-water separation zones. The odd number of partitions forms a flow hole between the bottom wall of the cabinet and the even number of partitions forms a flow hole between the top wall of the cabinet.

[0007] Odd-numbered oil-water separation zones are equipped with oil drain pipes, while even-numbered oil-water separation zones are equipped with water drain pipes.

[0008] Optionally, the inlet of the liquid inlet pipe is located at the upper part of one end of the cabinet, and the overflow outlet of the overflow pipe is located at the lower part of the other end of the cabinet.

[0009] Optionally, the liquid inlet pipe is J-shaped, and the liquid inlet of the liquid inlet pipe is located facing the side wall of one end of the cabinet.

[0010] Optionally, the overflow pipe is inverted U-shaped, and the horizontal portion of the overflow pipe extends through the side wall of the cabinet.

[0011] Optionally, observation mirrors are provided on the sidewalls of the odd-numbered oil-water separation zones.

[0012] Optionally, the upper end of the oil drain pipe is positioned to correspond to the height of the observation mirror.

[0013] Optionally, in two adjacent drain pipes, the upper end of the drain pipe located downstream of the oil-water mixture flow is higher than the upper end of the drain pipe located upstream of the oil-water mixture flow.

[0014] Optionally, a vent pipe is provided on the top wall of the last oil-water separation zone.

[0015] Optionally, each of the odd-numbered partitions is provided with ventilation holes.

[0016] Optionally, valves are provided on the oil drain pipe and the water drain pipe respectively.

[0017] This invention provides a ship bilge oil-water separation device, which has the following advantages: the oil-water separation device has a simple structure and can be made using common materials, thus effectively controlling manufacturing and maintenance costs. The oil-water separation device is suitable for large oil droplets (greater than 50μm) and has a better separation effect.

[0018] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0019] The above and other objects, features and advantages of the present invention will become more apparent from the more detailed description of exemplary embodiments of the invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the invention.

[0020] Figure 1 A schematic diagram of a ship bilge water-oil-water separation device according to an embodiment of the present invention is shown.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Cabinet; 2. Liquid inlet pipe; 3. Overflow pipe; 4. First partition; 5. Second partition; 6. Third partition; 7. First oil-water separation zone; 8. Second oil-water separation zone; 9. Third oil-water separation zone; 10. Fourth oil-water separation zone; 11. Oil drain pipe; 12. Water drain pipe; 13. Observation mirror; 14. Vent pipe; 15. Vent hole; 16. Oil; 17. Water. Detailed Implementation

[0023] Preferred embodiments of the invention will now be described in more detail. While preferred embodiments of the invention are described below, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0024] This invention provides a ship bilge water-oil-water separation device, comprising:

[0025] The cabinet has an inlet pipe at one end and an overflow pipe at the other end.

[0026] Multiple partitions are installed on the cabinet along the flow direction of the oil-water mixture. All partitions divide the cabinet into multiple oil-water separation zones. Odd-numbered partitions form flow holes between the bottom wall of the cabinet and the top wall of the cabinet, while even-numbered partitions form flow holes between the top wall of the cabinet.

[0027] Odd-numbered oil-water separation zones are equipped with oil drain pipes, while even-numbered oil-water separation zones are equipped with water drain pipes.

[0028] Specifically, the oil-water separator has multiple baffles installed in the cabinet. Each pair of adjacent baffles is connected to the top and bottom walls of the cabinet, creating a serpentine liquid flow path within the cabinet. When the oil-water mixture enters the cabinet, it accumulates in the first oil-water separation zone. Simultaneously, a flow hole exists below the baffle between the first and second oil-water separation zones and the cabinet, allowing the oil-water mixture to accumulate in the second oil-water separation zone as well. When the liquid level of the oil-water mixture is higher than the first baffle, the mixture entering through the inlet pipe remains only in the first oil-water separation zone. As the mixture's settling time in the first oil-water separation zone increases, the less dense oil moves upward and is eventually discharged through the drain pipe, while the denser water moves downward and enters the second oil-water separation zone from the first. This process separates the oil-water mixture in the second oil-water separation zone. As the liquid level rises, once the liquid level in the second oil-water separation zone is higher than the second baffle, the oil-water mixture in the second oil-water separation zone will flow into the third and fourth oil-water separation zones. Once the liquid level in the third and fourth oil-water separation zones is higher than the third baffle, the liquid level in the fourth oil-water separation zone will stop rising, while the liquid level in the third oil-water separation zone will continue to rise. Once the liquid level in the third oil-water separation zone is higher than the second baffle, the liquid levels in the second and third oil-water separation zones will rise simultaneously. At this point, the less dense oil in the second and third oil-water separation zones will rise to the top, while some of the denser water in the second and third oil-water separation zones will remain in the second oil-water separation zone and will be discharged from the bottom of the second oil-water separation zone through the drain pipe. The other part of the water will enter the third and fourth oil-water separation zones. The subsequent baffles and the liquid level rise and oil-water separation process in the oil-water separation zones are the same as those in the first three oil-water separation zones. The oil-water separator has multiple partitions inside the cabinet, forming multiple oil-water separation zones. In this way, the oil that can be separated in the later oil-water separation zones is less, while the liquid level of the water is higher. This allows the oil to be filtered layer by layer through the slow flow of the oil-water mixture. When liquid flows out of the cabinet from the overflow pipe, the liquid level in all oil-water separation zones is the same, and there are almost no large oil droplets in the liquid flowing out of the overflow pipe.

[0029] Optionally, the inlet of the liquid inlet pipe is located at the upper part of one end of the cabinet, and the overflow outlet of the overflow pipe is located at the lower part of the other end of the cabinet.

[0030] Specifically, since the oil-water mixture enters the cabinet, placing the inlet of the inlet pipe at the top allows sufficient time for oil-water separation in the first oil-water separation zone, enabling the less dense oil to be separated as much as possible. Since oil will still be present in the liquid in the last oil-water separation zone, the overflow outlet is placed at the bottom of the cabinet. This allows the relatively denser liquid to be discharged from the cabinet, effectively reducing the oil content of the discharged liquid.

[0031] Optionally, the liquid inlet pipe is J-shaped, with the liquid inlet of the liquid inlet pipe facing the side wall at one end of the cabinet.

[0032] Specifically, the inlet should be positioned facing the side wall and as close to the side wall as possible. This will prevent the oil-water mixture from coming into contact with the rising oil after it enters the cabinet, thus avoiding affecting the oil-water separation effect.

[0033] Optionally, the overflow pipe is inverted U-shaped, with the horizontal portion of the overflow pipe extending through the side wall of the cabinet.

[0034] Optionally, observation mirrors are provided on the sidewalls of the odd-numbered oil-water separation zones.

[0035] Optionally, the upper end of the drain pipe is set to correspond to the height of the observation mirror.

[0036] Specifically, the oil separation in the odd-numbered oil-water separation zone is observed through a viewing microscope. Once a certain amount of oil has been separated, the drain pipe can be opened to discharge the oil above the oil-water separation zone.

[0037] Optionally, in two adjacent drain pipes, the upper end of the drain pipe located downstream of the oil-water mixture flow is higher than the upper end of the drain pipe located upstream of the oil-water mixture flow.

[0038] Specifically, since the oil level in the downstream oil-water mixing zone is higher than that in the upstream oil-water mixing zone, this means that by setting up multiple oil-water mixing zones in sequence, as the oil-water mixture flows slowly, the oil content in the oil-water mixture will decrease as it flows further into the mixing zone. Therefore, the position of the drain pipe should be set higher and higher to avoid water being discharged from the drain pipe.

[0039] Optionally, a vent pipe is provided on the top wall of the last oil-water separation zone.

[0040] Optionally, ventilation holes are provided on the odd-numbered partitions.

[0041] Specifically, a vent pipe is installed at the top of the cabinet, and vent holes are installed above all odd-numbered partitions. This ensures that there is a certain pressure inside the cabinet, allowing the oil-water mixture to flow along the lower side of the cabinet and ensuring that the oil-water mixture is fully separated in the oil-water separation zone.

[0042] Optionally, valves are installed on the oil drain pipe and the water drain pipe respectively.

[0043] Specifically, the opening and closing status of each pipeline is controlled by the valves on the oil drain pipe and the water drain pipe. When oil needs to be drained, the valve is opened, and when the oil level reaches the lower end of the observation mirror, the valve on the oil drain pipe is closed. After the oil-water mixture in the cabinet has been stored and settled for a period of time, the valve on the water drain pipe can be opened to drain the water from the cabinet, leaving space for the separation of the oil-water mixture that is subsequently drained.

[0044] Example

[0045] like Figure 1 As shown, the present invention provides a ship bilge water-oil-water separation device, comprising:

[0046] Cabinet 1 has an inlet pipe 2 at the left end and an overflow pipe 3 at the right end.

[0047] Three partitions are set on the cabinet 1 along the flow direction of the oil-water mixture. All partitions divide the cabinet 1 into four oil-water separation zones. The first partition 4 and the third partition 6 form a flow hole between the bottom wall of the cabinet 1 and the second partition 5 forms a flow hole between the top wall of the cabinet 1.

[0048] Oil drain pipes 11 are provided in the first oil-water separation zone 7 and the third oil-water separation zone 9, and water drain pipes 12 are provided in the second oil-water separation zone 8 and the fourth oil-water separation zone 10.

[0049] In this embodiment, the inlet of the liquid inlet pipe 2 is located at the upper left end of the cabinet 1, and the overflow outlet of the overflow pipe 3 is located at the lower right end of the cabinet 1.

[0050] In this embodiment, the liquid inlet pipe 2 is J-shaped, and the liquid inlet of the liquid inlet pipe 2 is set towards the side wall of the left end of the cabinet 1.

[0051] In this embodiment, the overflow pipe 3 is inverted U-shaped, and the horizontal part of the overflow pipe is installed through the side wall of the cabinet.

[0052] In this embodiment, observation mirrors 13 are provided on the sidewalls of the first oil-water separation zone 7 and the third oil-water separation zone 9.

[0053] In this embodiment, the upper end of the oil drain pipe 11 is located in the lower half of the observation mirror 13.

[0054] In this embodiment, the upper end of the oil drain pipe located in the third oil-water separation zone 9 is higher than the upper end of the oil drain pipe located in the first oil-water separation zone 7.

[0055] In this embodiment, a vent pipe 14 is provided on the top wall of the fourth oil-water separation zone 10.

[0056] In this embodiment, both the first partition 4 and the third partition 6 are provided with ventilation holes 15.

[0057] In this embodiment, valves are respectively installed on the oil drain pipe 11 and the water drain pipe 12.

[0058] In summary, when this oil-water separation device separates an oil-water mixture, the mixture is discharged into the first oil-water separation zone 7 through the inlet pipe 2. Since the first oil-water separation zone 7 and the second oil-water separation zone 8 are connected by a flow hole at the bottom, the oil-water mixture accumulates in the first two separation zones. When the liquid level exceeds the first baffle 4, the oil-water mixture only enters the first oil-water separation zone 7. The denser water liquid 17 is separated in the first oil-water separation zone 7 and discharged into the second oil-water separation zone 8. The first oil-water separation zone 7 can separate more oil 16 than the second oil-water separation zone 8. When the oil in the first oil-water separation zone 7 can be seen through the observation mirror 13, it can be discharged through the oil drain pipe 11 in that separation zone. When the liquid level in the first oil-water separation zone 7 drops below the observation mirror 13, the oil drain pipe 11 is closed, and the inlet pipe 2 continues to drain liquid and the first oil-water separation zone continues to separate oil and water. When the liquid level in the second oil-water separation zone 8 is higher than the second partition 5, the oil and water in the second oil-water separation zone... The mixture will no longer rise. The mixture exceeding the second baffle 5 will enter the third oil-water separation zone 9 and the fourth oil-water separation zone 10. When the liquid level in the two oil-water separation zones is higher than the third baffle 6, only the high-density water in the third oil-water separation zone will enter the fourth oil-water separation zone. The third oil-water separation zone 9 and the second oil-water separation zone 8 will receive the water discharged from the first oil-water separation zone 7. However, this part of the water also contains a small amount of oil. Under the restriction of the first baffle 4 and the third baffle 6, the separated oil will remain in the second oil-water separation zone 8 and the third oil-water separation zone 9. During the process of the liquid level rising in the two oil-water separation zones, the low-density oil will continue to separate and rise. Finally, it will be seen through the observation mirror 13. Then, the oil drain pipe 11 in this area will be opened to discharge the oil. In the fourth oil-water separation zone 10, in order to effectively reduce the oil content of the discharged liquid, the overflow port of the overflow pipe is set at the bottom of the fourth oil-water separation zone 10, which can discharge the high-density water that has settled in the liquid in the third and fourth oil-water separation zones.

[0059] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A ship bilge water-oil-water separation device, characterized in that, include: The cabinet has an inlet pipe at one end and an overflow pipe at the other end. Multiple partitions are arranged on the cabinet along the flow direction of the oil-water mixture, and the multiple partitions divide the cabinet into multiple oil-water separation zones. The odd number of partitions forms a flow hole between the bottom wall of the cabinet and the even number of partitions forms a flow hole between the top wall of the cabinet. Odd-numbered oil-water separation zones are equipped with oil drain pipes, while even-numbered oil-water separation zones are equipped with water drain pipes.

2. The ship bilge water-oil-water separator according to claim 1, characterized in that, The inlet of the liquid inlet pipe is located at the upper part of one end of the cabinet, and the overflow outlet of the overflow pipe is located at the lower part of the other end of the cabinet.

3. The ship bilge water-oil-water separator according to claim 2, characterized in that, The liquid inlet pipe is J-shaped, and the liquid inlet of the liquid inlet pipe is set towards the side wall of one end of the cabinet.

4. The ship bilge water-oil-water separator according to claim 2, characterized in that, The overflow pipe is inverted U-shaped, and the horizontal part of the overflow pipe runs through the side wall of the cabinet.

5. The ship bilge water-oil-water separator according to claim 1, characterized in that, An observation mirror is provided on the side wall of the odd-numbered oil-water separation zone.

6. The ship bilge water-oil-water separator according to claim 5, characterized in that, The upper end of the oil drain pipe is positioned to correspond to the height of the observation mirror.

7. The ship bilge water-oil-water separator according to claim 6, characterized in that, In two adjacent drain pipes, the upper end of the drain pipe located downstream of the oil-water mixture flow is higher than the upper end of the drain pipe located upstream of the oil-water mixture flow.

8. The ship bilge water-oil-water separator according to claim 1, characterized in that, A vent pipe is installed on the top wall of the last oil-water separation zone.

9. The ship bilge water-oil-water separator according to claim 1, characterized in that, The upper part of each of the odd-numbered partitions is provided with a vent hole.

10. The ship bilge water-oil-water separator according to claim 1, characterized in that, Valves are installed on the oil drain pipe and the water drain pipe respectively.

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