Water-oil separation device

Abstract

The utility model provides a water-oil separation device, which comprises a rotational flow component, a water inlet and a water outlet, the rotational flow component comprises a liquid inlet distribution pipe and a plurality of rotational flow pipes communicated with the liquid inlet distribution pipe, and each rotational flow pipe is provided with an oil outlet, a first water outlet and a liquid inlet positioned between the oil outlet and the first water outlet; and the re-separation assembly comprises a separation box body, a water outlet structure and an oil outlet structure, the water outlet structure and the oil outlet structure are arranged in the separation box body, the multiple cyclone pipes are arranged on the periphery of the separation box body at intervals, and the oil outlet communicates with the separation box body so that the re-separation assembly can re-separate oil discharged from the oil outlet. According to the technical scheme, the problem that the separation effect is affected by unstable flow in the operation process of a cyclone separator in the prior art can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of separation devices, and more particularly to a water-oil separation device. Background Art

[0002] In the related art, cyclone separation is a method of separating fluids with different densities using centrifugal force and is commonly used for water-oil separation. The inside of a cyclone separator usually has a conical structure. After the fluid enters the separator, due to the action of centrifugal force, the denser water will move towards the outer wall of the separator, while the less dense oil will move towards the center. Due to the density difference between water and oil, the water will flow downward along the wall of the separator and finally be discharged from the bottom outlet; the oil will form a smaller vortex in the center and be discharged from the top outlet. And generally, a cyclone separator has multiple cyclone tubes to improve the processing efficiency.

[0003] Cyclone separation has the advantages of high efficiency and low cost, and is especially suitable for treating a large amount of water-oil mixture, so it is widely used in scenarios where water-oil separation is required. However, during the operation of the cyclone separator, the flow rate may be unstable, which will affect the separation effect. Moreover, the existing cyclone tubes are generally arranged inside the tank body, resulting in difficulties in maintenance and high difficulty in flow rate adjustment. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a water-oil separation device to solve the problem that the unstable flow rate during the operation of the cyclone separator in the related art will affect the separation effect.

[0005] To achieve the above purpose, the utility model provides a water-oil separation device, including: a cyclone assembly, including a liquid inlet distribution pipe and a plurality of cyclone tubes communicated with the liquid inlet distribution pipe, each cyclone tube having an oil outlet, a first water outlet, and a liquid inlet located between the oil outlet and the first water outlet; a re-separation assembly, including a separation box body, a water outlet structure and an oil outlet structure arranged in the separation box body, and the plurality of cyclone tubes are arranged at intervals on the outer periphery of the separation box body, and the oil outlet is communicated with the separation box body so that the re-separation assembly re-separates the oil liquid discharged from the oil outlet.

[0006] Furthermore, the cyclone assembly further includes a plurality of flow control structures corresponding to the plurality of cyclone tubes one by one, and each flow control structure is arranged between the liquid inlet distribution pipe and the corresponding cyclone tube and communicates the liquid inlet distribution pipe and the cyclone tube.

[0007] Furthermore, the flow control structure includes a flow meter and a regulating valve, the regulating valve is arranged between the inlet of the flow meter and the liquid inlet distribution pipe, and the outlet of the flow meter is communicated with the liquid inlet.

[0008] Further, the water outlet structure includes an oil baffle and a water phase liquid level adjusting member. The lower end of the oil baffle is spaced from the bottom wall of the separation tank body and divides the interior of the separation tank body into a water outlet chamber and a water-oil separation chamber. The water phase liquid level adjusting member is arranged in the water outlet chamber and can adjust the height of the water phase liquid level in the separation tank body.

[0009] Further, the water phase liquid level adjusting member includes a transverse partition arranged in the water outlet chamber and a first water outlet pipe arranged on the transverse partition. The lower end of the first water outlet pipe communicates with the water outlet chamber below the transverse partition. A second water outlet is arranged on the first water outlet pipe above the transverse partition. The water phase liquid level adjusting member is movably arranged in the vertical direction to change the height of the second water outlet, thereby adjusting the height of the water phase liquid level in the separation tank body.

[0010] Further, the transverse partition is fixedly arranged in the water outlet chamber, and the first water outlet pipe is threadedly connected to the transverse partition.

[0011] Further, the second water outlet is arranged on the side wall of the first water outlet pipe, and the water phase liquid level adjusting member further includes an operating member arranged at the upper end of the first water outlet pipe.

[0012] Further, the water outlet structure further includes a second water outlet pipe arranged on the side wall of the separation tank body and communicating with the water outlet chamber above the transverse partition.

[0013] Further, the oil outlet structure includes an oil phase overflow plate arranged at the upper end of the separation tank body. The oil phase overflow plate includes a horizontal plate and a vertical plate. The horizontal plate is connected between the vertical plate and the side wall of the separation tank body, and an overflow groove is formed between the horizontal plate, the vertical plate and the side wall of the separation tank body.

[0014] Further, the oil outlet structure further includes an oil outlet pipe arranged on the side wall of the separation tank body and communicating with the bottom end of the overflow groove.

[0015] Applying the technical solution of the present utility model, the water-oil separation device includes a cyclone assembly and a re-separation assembly. Among them, the cyclone assembly includes a liquid inlet distribution pipe and a cyclone pipe. The cyclone pipe can perform cyclone separation on the liquid input by the liquid inlet distribution pipe. The separated water phase is discharged from the lower first water outlet, and the separated oil phase is discharged from the upper oil outlet. The re-separation assembly is communicated with the oil outlet and can perform gravity phase separation on the oil phase discharged from the oil outlet again. For the situation where the water content in the oil phase separated by the cyclone pipe is relatively high due to the unstable flow rate of the cyclone pipe, resulting in the water-oil mixed liquid being discharged through the oil outlet, through the re-separation of the re-separation assembly, water-oil separation can be performed again to ensure the purity of the finally separated oil phase and water phase. Therefore, the technical solution of the present application can effectively solve the problem that the unstable flow rate during the operation of the cyclone separator in the related art affects the separation effect. Description of the Drawings

[0016] The accompanying drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:

[0017] Figure 1 Shows a three-dimensional structural schematic diagram of an embodiment of a water-oil separation device according to the present utility model;

[0018] Figure 2 Shows Figure 1 A side view schematic diagram of the water-oil separation device;

[0019] Figure 3 Shows Figure 1 A three-dimensional structural schematic diagram of the liquid inlet distribution pipe of the water-oil separation device;

[0020] Figure 4 Shows Figure 3 A sectional view schematic diagram of the liquid inlet distribution pipe;

[0021] Figure 5 Shows Figure 1 A three-dimensional structural schematic diagram of a partial structure of the cyclone assembly of the water-oil separation device;

[0022] Figure 6 Shows Figure 5 A sectional view schematic diagram of the cyclone assembly;

[0023] Figure 7 Shows Figure 1 A three-dimensional structural schematic diagram of the re-separation assembly of the water-oil separation device;

[0024] Figure 8 Shows Figure 7 An enlarged view of part A of the re-separation assembly;

[0025] Figure 9 Shows Figure 7 A sectional view schematic diagram of the re-separation assembly;

[0026] Figure 10 Shows Figure 9 An enlarged view of part B of the re-separation assembly;

[0027] Figure 11 Shows Figure 9 An enlarged view of part C of the re-separation assembly;

[0028] Figure 12 Shows Figure 1 A three-dimensional structural schematic diagram of the support frame of the water-oil separation device.

[0029] Among them, the above-mentioned drawings include the following reference numerals:

[0030] 10. Swirl component; 11. Liquid inlet distribution pipe; 111. Main pipe; 112. Liquid separation pipe; 113. Connecting flange; 12. Swirl pipe; 121. Oil outlet; 122. Liquid inlet; 123. Water outlet; 13. Flow control structure; 131. Flowmeter; 132. Control valve; 14. Liquid outlet pipe;

[0031] 20. Re-separation component; 201. Water outlet cavity; 202. Water-oil separation cavity; 203. Second water outlet; 204. Overflow tank; 21. Separation box body; 211. Connecting hole; 22. Oil baffle; 23. Water phase liquid level adjusting part; 231. Horizontal partition board; 232. First water outlet pipe; 233. Operating part; 24. Second water outlet pipe; 25. Oil phase overflow board; 251. Horizontal board; 252. Vertical board; 26. Oil outlet pipe; 27. Drain pipe;

[0032] 30. Support frame;

[0033] 41. First connecting pipe. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way constitutes a limitation to the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless otherwise clearly specified in the context, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0036] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present utility model. At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0037] As Figure 1 , Figure 2 , Figure 5 and Figure 6 shown, the present application provides an oil-water separation device. An embodiment of the oil-water separation device of the present application includes a cyclone assembly 10 and a re-separation assembly 20. Among them, the cyclone assembly 10 includes a liquid inlet distribution pipe 11 and a plurality of cyclone tubes 12 communicated with the liquid inlet distribution pipe 11. Each cyclone tube 12 has an oil outlet 121, a first water outlet 123, and a liquid inlet 122 located between the oil outlet 121 and the first water outlet 123. The re-separation assembly 20 includes a separation box body 21, a water outlet structure and an oil outlet structure arranged in the separation box body 21. The plurality of cyclone tubes 12 are arranged at intervals on the outer periphery of the separation box body 21, and the oil outlet 121 is communicated with the separation box body 21 so that the re-separation assembly 20 re-separates the oil liquid discharged from the oil outlet 121.

[0038] Applying the technical solution of this embodiment, the oil-water separation device includes a cyclone assembly 10 and a re-separation assembly 20. Among them, the cyclone assembly 10 includes a liquid inlet distribution pipe 11 and cyclone tubes 12. The cyclone tubes 12 can perform cyclone separation on the liquid input by the liquid inlet distribution pipe 11. The separated water phase is discharged from the lower first water outlet 123, and the separated oil phase is discharged from the upper oil outlet 121. The re-separation assembly 20 is communicated with the oil outlet 121 and can perform gravity phase separation on the oil phase discharged from the oil outlet 121 again. For the situation where the water content in the oil phase separated by the cyclone tubes 12 is relatively high due to the unstable flow rate of the cyclone tubes 12, resulting in the discharge of the oil-water mixed liquid through the oil outlet 121, through the re-separation of the re-separation assembly 20, the oil-water separation can be performed again to ensure the purity of the finally separated oil phase and water phase. Therefore, the technical solution of this embodiment can effectively solve the problem that the unstable flow rate during the operation of the cyclone separator in the related art will affect the separation effect.

[0039] In addition, in this embodiment, the cyclone tubes 12 are arranged at intervals on the outer periphery of the separation box body 21, so that the cyclone tubes 12 are externally arranged, which is convenient for the maintenance of the cyclone tubes 12.

[0040] It should be noted that the above-mentioned "situation where the water content in the oil phase separated by the cyclone tube 12 is relatively high due to the unstable flow rate of the cyclone tube 12, resulting in the water-oil mixed liquid being discharged through the oil outlet 121" is mainly because when the flow rate is too large, part of the water-oil mixed liquid will be directly discharged from the oil outlet 121 without being separated, making the water content in the liquid discharged from the oil outlet 121 high. In addition, the oil phase after being separated by the cyclone tube 12 also contains a part of the water phase. Through the re-separation of the re-separation assembly 20, the purity of the finally obtained oil phase and water phase can be further ensured, and the water-oil separation effect can be ensured.

[0041] As Figure 1 、 Figure 2 and Figure 5 shown, the cyclone assembly 10 further includes a plurality of flow control structures 13 corresponding to the plurality of cyclone tubes 12 one by one. Each flow control structure 13 is arranged between the liquid inlet distribution pipe 11 and the corresponding cyclone tube 12 and communicates the liquid inlet distribution pipe 11 and the cyclone tube 12. By providing a flow control structure 13 for each cyclone tube 12, the flow rate of each cyclone tube 12 can be controlled individually, and thus more precise control can be achieved.

[0042] As Figure 1 、 Figure 2 and Figure 5 shown, the flow control structure 13 includes a flow meter 131 and a regulating valve 132. The regulating valve 132 is arranged between the inlet of the flow meter 131 and the liquid inlet distribution pipe 11, and the outlet of the flow meter 131 is communicated with the liquid inlet 122. The liquid input by the liquid inlet distribution pipe 11 first flows through the regulating valve 132 and the flow meter 131, and then enters the cyclone tube 12 for shunting. Among them, the regulating valve 132 can control the opening and closing and the flow rate of the flow path (a flow control structure 13 and a cyclone tube 12 form a flow path), and the flow meter 131 can show the flow rate of this flow path. The staff can adjust the regulating valve 132 through the display of the flow meter 131, so as to adjust the flow rate of this flow path to an appropriate range. Through the settings of the flow meter 131 and the regulating valve 132, the flow rate of each cyclone tube 12 can be independently controlled, and the number of flow paths to be conducted can be controlled according to the flow rate of the liquid input by the liquid inlet distribution pipe 11, and the control is more flexible. In addition, when some cyclone tubes 12 fail, it is also possible to only cut off the flow path where the damaged cyclone tube 12 is located and perform maintenance separately, and the water-oil separation device can continue to operate without shutting down.

[0043] Among them, the upper end of the flow meter 131 is connected to the liquid inlet 122 of the cyclone tube 12 through a flange structure.

[0044] As Figure 1 and Figure 2 shown, the cyclone assembly 10 further includes a liquid outlet pipe 14, and the liquid outlet pipe 14 communicates with the first water outlets 123 of the plurality of cyclone tubes 12 to collect and discharge the aqueous phase after separation by the cyclone tubes 12.

[0045] As Figure 3 and Figure 4 shown, the liquid inlet distribution pipe 11 includes a main pipe 111, a liquid distribution pipe 112 and a connecting flange 113. The main pipe 111 is a tubular structure with one end open and one end closed. A plurality of liquid distribution pipes 112 are connected to the side wall of the main pipe 111 and communicate with the main pipe 111. Each liquid distribution pipe 112 is connected to the regulating valve 132 of the corresponding flow control structure 13 through a threaded structure. The connecting flange 113 is arranged at the open end of the main pipe 111 to realize the connection between the liquid inlet distribution pipe 11 and the external liquid delivery pipeline. The structure of the liquid outlet pipe 14 is similar to that of the liquid inlet distribution pipe 11 and will not be elaborated here.

[0046] As Figures 7 to 11 shown, the water outlet structure includes an oil baffle 22 and an aqueous phase liquid level adjusting member 23. The lower end of the oil baffle 22 is spaced from the bottom wall of the separation box body 21 and divides the interior of the separation box body 21 into a water outlet chamber 201 and a water-oil separation chamber 202. The aqueous phase liquid level adjusting member 23 is arranged in the water outlet chamber 201 and can adjust the height of the aqueous phase liquid level in the separation box body 21. The oil baffle 22 divides the interior of the separation box body 21 into a water outlet chamber 201 and a water-oil separation chamber 202. The separated aqueous phase is discharged through the water outlet chamber 201. The aqueous phase liquid level adjusting member 23 is arranged in the water outlet chamber 201 and can adjust the height of the aqueous phase liquid level in the separation box body 21. Since the separated oil phase floats above the aqueous phase, that is, the height of the separated oil phase is adjusted, which is convenient for collecting and discharging the separated oil phase.

[0047] It should be noted that, in order to prevent some of the oil phase from entering the water outlet chamber 201 through the gap between the oil baffle 22 and the bottom wall of the separation box body 21, before the water-oil separation device works, water is first injected into the separation box body 21 to submerge the bottom of the oil baffle 22, so as to ensure that all the oil phase discharged from the oil outlet 121 and entering the separation box body 21 is located in the water-oil separation chamber 202.

[0048] As Figure 4 , Figure 5 and Figure 9 shown, the water-oil separation device further includes a first connecting pipe 41. The first connecting pipe 41 is connected to the upper end of the cyclone tube 12 through a flange structure and communicates with the oil outlet 121. A connecting hole 211 is provided on the side wall of the separation box body 21. The end of the first connecting pipe 41 away from the cyclone tube 12 extends into the connecting hole 211 to realize the transportation of the oil phase separated by the cyclone tube 12 into the separation box body 21.

[0049] As Figure 8 , Figure 9 and Figure 10 shown, the aqueous phase liquid level adjusting member 23 includes a transverse partition 231 disposed in the water outlet chamber 201 and a first water outlet pipe 232 disposed on the transverse partition 231. The lower end of the first water outlet pipe 232 communicates with the water outlet chamber 201 below the transverse partition 231. A second water outlet 203 is provided on the first water outlet pipe 232 above the transverse partition 231. The aqueous phase liquid level adjusting member 23 is movably disposed in the vertical direction to change the height of the second water outlet 203, thereby adjusting the height of the aqueous phase liquid level in the separation box 21. The transverse partition 231 divides the water outlet chamber 201 into an upper chamber and a lower chamber vertically distributed. Among them, the lower chamber is directly communicated with the water-oil separation chamber 202, and the upper chamber and the lower chamber are communicated through the first water outlet pipe 232. The height of the aqueous phase liquid level in the separation box 21 is determined by the height of the bottom end of the second water outlet 203 on the first water outlet pipe 232. By movably disposing the aqueous phase liquid level adjusting member 23 in the vertical direction, the height of the second water outlet 203 is changed, thereby realizing the adjustment of the height of the aqueous phase liquid level in the separation box 21.

[0050] It should be noted that the above-mentioned "the aqueous phase liquid level adjusting member 23 is movably disposed in the vertical direction" can be that the aqueous phase liquid level adjusting member 23 moves as a whole or part of the aqueous phase liquid level adjusting member 23 is fixed and part is movable.

[0051] Preferably, in this embodiment, the transverse partition 231 is fixedly disposed in the water outlet chamber 201, and the first water outlet pipe 232 is threadedly connected to the transverse partition 231. The first water outlet pipe 232 is connected to the transverse partition 231 through a threaded structure, so that the staff can drive the first water outlet pipe 232 to move in the vertical direction by rotating the first water outlet pipe 232, thereby realizing the adjustment of the height of the second water outlet 203, which has the advantage of being easy to adjust.

[0052] Of course, in an embodiment not shown in the figure, the transverse partition can also be configured to be movable in the up and down direction, and the height of the second water outlet changes during the movement of the transverse partition.

[0053] As Figure 8 and Figure 11As shown, the second water outlet 203 is provided on the side wall of the first water outlet pipe 232. The water phase liquid level adjusting member 23 further includes an operating member 233 provided at the upper end of the first water outlet pipe 232. Setting the second water outlet 203 on the side wall of the first water outlet pipe 232 can prevent the water phase discharged through the first water outlet pipe 232 from flowing to the upper end of the first water outlet pipe 232. Setting the operating member 233 at the upper end of the first water outlet pipe 232 facilitates the staff to rotate the first water outlet pipe 232 by holding the operating member 233. In this embodiment, the operating member 233 is an operating plate.

[0054] As Figure 7 , Figure 9 and Figure 10 shown, the water outlet structure further includes a second water outlet pipe 24 provided on the side wall of the separation box body 21 and communicating with the water outlet cavity 201 (i.e., the upper cavity) above the transverse partition 231. The water phase after being re-separated by the re-separation assembly 20 is discharged into the upper cavity through the first water outlet pipe 232, and then discharged through the second water outlet pipe 24 for collecting the water phase.

[0055] As Figure 9 and Figure 10 shown, the oil outlet structure includes an oil phase overflow plate 25 provided at the upper end of the separation box body 21. The oil phase overflow plate 25 includes a horizontal plate 251 and a vertical plate 252. The horizontal plate 251 is connected between the vertical plate 252 and the side wall of the separation box body 21. An overflow groove 204 is formed between the horizontal plate 251, the vertical plate 252 and the side wall of the separation box body 21. When the liquid level of the oil phase in the water-oil separation cavity 202 is higher than the upper end of the vertical plate 252, the oil phase in the water-oil separation cavity 202 will flow into the overflow groove 204 to realize the collection of the oil phase in the water-oil separation cavity 202.

[0056] As Figure 9 and Figure 10 shown, the oil outlet structure further includes an oil outlet pipe 26 provided on the side wall of the separation box body 21 and communicating with the bottom end of the overflow groove 204. The oil phase collected in the overflow groove 204 can be discharged through the oil outlet pipe 26.

[0057] As Figure 7 and Figure 9 shown, the re-separation assembly 20 further includes an emptying pipe 27 connected to the lower end of the side wall of the separation box body 21 and communicating with the inside of the separation box body 21.

[0058] As Figure 1 , Figure 2 and Figure 12 shown, the water-oil separation device further includes a support frame 30. The cyclone assembly 10 and the re-separation assembly 20 are both provided on the support frame 30. Among them, the support frame 30 can raise the re-separation assembly 20 to make the overall layout of the water-oil device more reasonable.

[0059] When applying the water-oil separation device of this embodiment, first determine the number of cyclone tubes 12 to be conducted according to the total amount of the water-oil mixture to be treated. After opening the regulating valve 132 corresponding to the cyclone tube 12, the water-oil mixture enters from the liquid inlet distribution pipe 11 and is evenly distributed to each liquid distribution pipe 112. The flow rate is adjusted to an appropriate range through the regulating valve 132 and the flowmeter 131. After passing through the regulating valve 132 and the flowmeter 131, the water-oil mixture enters the cyclone tube 12 from the liquid inlet 122, forms a swirl inside the cyclone tube 12, and distributes the high-density water phase on the outer side of the cyclone tube 12 and discharges it downward through centrifugal action. Finally, it flows to the next working station through the liquid outlet pipe 14. The oil phase has a relatively small density and accumulates in the upper layer of the cyclone tube 12. Finally, it overflows from the oil outlet 121 at the top of the cyclone tube 12 into the separation box body 21. After entering the separation box body 21, through the gravity sedimentation effect, the oil phase floats upward and the water phase sinks downward. The water phase overflows upward from the lower end of the oil baffle 22 to the next process section. After the oil phase layer reaches a certain thickness, it overflows into the overflow tank 204 and is then discharged through the oil outlet pipe 26 for collection.

[0060] When applying the cyclone assembly 10 of this embodiment in combination with the re-separation assembly 20 for re-separating floating oil, compared with the traditional separation method that only separates phases by gravity, the floor area can be reduced by more than 60%.

[0061] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0062] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations for the spatial relative descriptions used herein will be made accordingly.

[0063] In addition, it should be noted that the use of terms such as "first", "second" etc. to define components is only for the convenience of differentiating the corresponding components. Without further statement, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present utility model.

[0064] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A water-oil separation device, characterized in that: include: A swirl assembly (10), comprising a liquid inlet distribution pipe (11) and a plurality of swirl tubes (12) connected to the liquid inlet distribution pipe (11), each of the swirl tubes (12) having an oil outlet (121), a first water outlet (123), and a liquid inlet (122) located between the oil outlet (121) and the first water outlet (123); The re-separation assembly (20) comprises a separation box (21), a water outlet structure and an oil outlet structure arranged in the separation box (21), a plurality of cyclone tubes (12) are arranged at intervals on the outer periphery of the separation box (21), and the oil outlet (121) is connected to the separation box (21), so that the re-separation assembly (20) re-separates the oil discharged from the oil outlet (121).

2. The water-oil separation device according to claim 1, characterized in that: The swirl assembly (10) further comprises a plurality of flow control structures (13) corresponding one-to-one to the plurality of swirl tubes (12); each of the flow control structures (13) is arranged between the liquid inlet distribution pipe (11) and the corresponding swirl tube (12) and connects the liquid inlet distribution pipe (11) and the swirl tube (12).

3. The water-oil separation device according to claim 2, characterized in that: The flow control structure (13) comprises a flow meter (131) and a regulating valve (132); the regulating valve (132) is arranged between the inlet of the flow meter (131) and the liquid inlet distribution pipe (11); and the outlet of the flow meter (131) is connected to the liquid inlet (122).

4. The water-oil separation device according to any one of claims 1 to 3, characterized in that: The water outlet structure comprises an oil baffle plate (22) and a water phase liquid level regulating member (23); the lower end of the oil baffle plate (22) is spaced apart from the bottom wall of the separation box (21) and divides the interior of the separation box (21) into a water outlet chamber (201) and a water-oil separation chamber (202); the water phase liquid level regulating member (23) is arranged in the water outlet chamber (201) and is capable of regulating the height of the water phase liquid level in the separation box (21).

5. The water-oil separation device according to claim 4, characterized in that: The water phase liquid level regulating member (23) comprises a transverse partition (231) arranged in the water outlet chamber (201) and a first water outlet pipe (232) arranged on the transverse partition (231); the lower end of the first water outlet pipe (232) is connected to the water outlet chamber (201) below the transverse partition (231); the first water outlet pipe (232) is provided with a second water outlet (203) located above the transverse partition (231); the water phase liquid level regulating member (23) is movably arranged in the vertical direction to change the height of the second water outlet (203), thereby adjusting the height of the water phase liquid level in the separation box (21).

6. The water-oil separation device according to claim 5, characterized in that: The transverse partition (231) is fixedly arranged in the water outlet cavity (201), and the first water outlet pipe (232) is threadedly connected to the transverse partition (231).

7. The water-oil separation device according to claim 6, characterized in that: The second water outlet (203) is arranged on the side wall of the first water outlet pipe (232), and the water phase liquid level adjustment member (23) further comprises an operating member (233) arranged at the upper end of the first water outlet pipe (232).

8. The water-oil separation device according to claim 6, characterized in that: The water outlet structure also includes a second water outlet pipe (24) which is arranged on the side wall of the separation box (21) and is connected to the water outlet cavity (201) above the transverse partition (231).

9. The water-oil separation device according to any one of claims 1 to 3, characterized in that: The oil outlet structure comprises an oil phase overflow plate (25) arranged at the upper end of the separation box (21), the oil phase overflow plate (25) comprises a transverse plate (251) and a vertical plate (252), the transverse plate (251) is connected between the vertical plate (252) and the side wall of the separation box (21), and an overflow groove (204) is formed between the transverse plate (251), the vertical plate (252) and the side wall of the separation box (21).

10. The water-oil separation device according to claim 9, characterized in that: The oil outlet structure also includes an oil outlet pipe (26) which is arranged on the side wall of the separation box (21) and is connected to the bottom end of the overflow groove (204).

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