Oily sewage storage device

Abstract

The invention provides an oily sewage storage device, and relates to the technical field of petrochemical engineering sewage sealed conveying. The oily sewage storage device comprises a sewage tank for storing oily sewage; the vortex barrier is used for preventing the sewage from generating rotational flow when being discharged from the sewage outlet; the water collecting tank is arranged at the sewage outlet, and sewage enters the water collecting tank through the vortex barrier and the opening end of the water collecting tank in sequence and is discharged from the water collecting outlet of the water collecting tank; a drainage valve is arranged at the water collection outlet; the greasy dirt adsorption assembly is used for adsorbing greasy dirt in the sewage in the sewage tank; the oil quantity sensor is used for detecting the oil content of the sewage entering the water collecting tank; and the controller is in signal connection with the control ends of the oil quantity sensor and the drain valve and is used for opening or closing the drain valve according to the detection result of the oil quantity sensor. The oil-containing sewage storage device bag solves the problem that in the prior art, when sewage in a sewage tank is discharged, the content of oil dirt in the sewage is too high, and consequently a sewage pipeline is prone to being blocked.

Description

Technical Field

[0001] The present invention relates to the technical field of sealed transportation of petrochemical sewage, and specifically, to an oil-containing sewage storage device. Background Art

[0002] Due to the improvement of environmental protection and the requirements of automation and intelligence, the oil-containing sewage discharged from petrochemical storage tanks must adopt a closed transportation method of sewage pipeline + horizontal sewage tank to avoid the pollution of the atmosphere by the volatile organic gases in the sewage. The horizontal sewage tank is an indispensable device in the closed transportation process of oil-containing sewage. The drainage outlets of conventional horizontal sewage tanks are all opened at the lower part of the sewage tank, and a sewage pipeline is welded at the opening. The sewage tank does not have the functions of intercepting impurities and reducing the resistance of the oil-water interface vortex. Therefore, when discharging sewage, the impurities in the tank will be discharged together with the sewage and enter the downstream sewage pipeline, and the discharged impurities are easy to accumulate in the sewage pipeline. When the sewage pipeline downstream of the sewage tank is blocked by impurities and the sewage cannot be discharged, the sewage discharge system in the tank area will stop running. The blockage of the sewage pipeline caused by impurities not only seriously affects the operation of the sewage discharge system, but also is difficult to clean.

[0003] Therefore, there is an urgent need for a device that can remove the oil in the sewage before the sewage enters the pipeline and a method for discharging the sewage through the pipeline to solve at least one of the above problems. Summary of the Invention

[0004] The purpose of the embodiment of the present invention is to solve the problem that the sewage pipeline is easy to be blocked due to the excessive oil content in the sewage when discharging the sewage in the sewage tank in the existing technology.

[0005] To achieve the above purpose, the present invention provides an oil-containing sewage storage device, and the oil-containing sewage storage device includes:

[0006] A sewage tank, having a sewage inlet and a sewage outlet, for storing oil-containing sewage;

[0007] A vortex barrier, disposed in close contact with the sewage outlet, for preventing the generation of swirl when the sewage is discharged from the sewage outlet;

[0008] A water collecting tank with one end open, disposed at the sewage outlet, the bottom of the water collecting tank is provided with a water collecting outlet, and the sewage sequentially enters the water collecting tank through the vortex barrier and the open end of the water collecting tank and is discharged from the water collecting outlet of the water collecting tank; a drain valve is disposed at the water collecting outlet;

[0009] An oil adsorption assembly, disposed on the sewage tank, for adsorbing the oil in the sewage in the sewage tank;

[0010] An oil quantity sensor, disposed in the water collecting tank, for detecting the oil content in the sewage entering the water collecting tank;

[0011] A controller, which is signal-connected to the control ends of the oil quantity sensor and the drain valve, and is configured to open or close the drain valve according to the detection result of the oil quantity sensor.

[0012] Specifically, the vortex barrier includes: an anti-vortex baffle and an annular retaining ring;

[0013] A plurality of filter holes are formed in the retaining ring. One end of the retaining ring is attached to the sewage outlet, and the retaining ring protrudes from the sewage outlet by a first given height;

[0014] The anti-vortex baffle is arranged at the other end of the retaining ring and is used to prevent the sewage from generating swirl when discharging from the sewage outlet.

[0015] Specifically, the vortex barrier further includes: a filter membrane laid on the anti-vortex baffle for filtering the oil in the sewage.

[0016] Specifically, the oily sewage storage device further includes: a water level detector arranged in the sewage tank for detecting the water level of the sewage in the sewage tank.

[0017] Specifically, a first inlet and outlet and a second inlet and outlet are formed at the top of the sewage tank;

[0018] The oil absorption assembly includes: an oil absorption cloth, a cloth releasing roller, a cloth winding roller and a plurality of tension rollers;

[0019] Both the cloth releasing roller and the cloth winding roller are arranged on the outer side surface of the top of the sewage tank;

[0020] One end of the oil absorption cloth is wound around the cloth releasing roller, the other end passes through the first inlet and outlet and enters the sewage tank, and then passes out through the second inlet and outlet and is wound around the cloth winding roller;

[0021] A plurality of tension rollers are arranged in the sewage tank for tensioning the oil absorption cloth so that the oil absorption cloth contacts the sewage in the sewage tank, and the oil in the sewage is adsorbed by the oil absorption cloth.

[0022] Specifically, the oil absorption assembly further includes a plurality of telescopic rods;

[0023] Each tension roller is arranged in the sewage tank through a telescopic rod, and each telescopic rod adjusts the distance between the corresponding tension roller and the sewage water surface in the sewage tank through telescopic movement;

[0024] The controller is signal-connected to the control ends of the water level detector and the telescopic rods, and the controller is further configured to control the telescopic amount of each telescopic rod according to the sewage water level value.

[0025] Specifically, the oil-contaminated water adsorption assembly further includes: a water guide plate disposed at the second inlet and outlet for guiding the sewage dripping from the oil-absorbing cloth into the sewage tank through the second inlet and outlet.

[0026] Specifically, the oil-containing sewage storage device includes: a temperature sensor disposed in the sewage tank for detecting the temperature of the sewage in the sewage tank.

[0027] Specifically, the oil-containing sewage storage device further includes: a water temperature adjustment assembly disposed on the sewage tank for adjusting the temperature of the sewage in the sewage tank.

[0028] Specifically, the water temperature adjustment assembly includes: a delivery pump and a temperature control pipe laid on the body of the sewage tank;

[0029] The delivery pump is used to deliver a temperature-adjusting medium into the temperature control pipe to adjust the temperature of the sewage in the sewage tank;

[0030] The controller is signal-connected to the temperature sensor and the delivery pump, and the controller is further used to turn on or off the delivery pump according to the sewage temperature value.

[0031] For the oil-containing sewage storage device provided by the present invention, the oil-containing sewage enters the sewage tank from the sewage inlet of the sewage tank, is stored in the sewage tank and discharged from the sewage outlet. In order to avoid the generation of swirl at the sewage outlet when the sewage is discharged, a swirl barrier is provided at the sewage outlet. By means of the swirl barrier, it is prevented that air enters the subsequent sewage pipeline along with the sewage due to the generation of swirl when the sewage is discharged from the sewage outlet. In order to avoid the oil and grease in the sewage entering the subsequent sewage pipeline along with the sewage discharged from the sewage tank and causing blockage of the sewage pipeline, an oil-contaminated water adsorption assembly is provided. By means of the oil-contaminated water adsorption assembly, the oil and grease in the sewage are adsorbed, so as to avoid the oil and grease adhering to the inner wall of the sewage pipeline during subsequent sewage discharge and causing pipeline blockage. In order to obtain the oil content in the sewage, an oil quantity sensor is installed in the water collecting tank provided at the sewage outlet. The sewage enters the water collecting tank through the swirl barrier, and the oil quantity sensor detects the oil content in the sewage in the water collecting tank, so as to facilitate the staff to accurately know the adsorption effect of the oil-contaminated water adsorption assembly and avoid the blockage of the subsequent sewage pipeline due to excessive oil content when discharging the sewage. At the same time, the controller controls the drain valve to open and discharge the sewage or close and stop discharging the sewage according to the detection result of the oil quantity sensor. The oil-containing sewage storage device provided by the present invention solves the problem that the sewage pipeline is easily blocked due to excessive oil content in the sewage when discharging the sewage in the sewage tank in the prior art.

[0032] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent specific embodiment part. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present invention, but do not constitute a limitation to the embodiments of the present invention. In the accompanying drawings:

[0034] Figure 1 It is a schematic structural diagram of an oily sewage storage device provided by an embodiment of the present invention.

[0035] Explanation of reference numerals

[0036] 1 - sewage tank; 2 - vortex barrier; 3 - water collection tank; 4 - oil stain adsorption assembly; 5 - oil quantity sensor; 21 - anti - vortex baffle; 22 - retaining ring; 41 - oil absorption cloth; 42 - cloth releasing roller; 43 - cloth winding roller; 44 - tensioning roller; 45 - telescopic rod; 46 - water guide plate; 47 - waterproof plate. Specific embodiments

[0037] The following will detail the specific embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for explaining and illustrating the present invention and are not used to limit the present invention.

[0038] In the embodiments of the present invention, unless otherwise stated, the orientation words such as "upper, lower, top, bottom" are generally in reference to the directions shown in the accompanying drawings or in terms of the vertical, perpendicular or gravitational directions for describing the relative positions of the components.

[0039] Figure 1 It is a schematic structural diagram of an oily sewage storage device. As Figure 1 shown, the present invention provides an oily sewage storage device, and the oily sewage storage device includes:

[0040] A sewage tank 1, having a sewage inlet and a sewage outlet, for storing oily sewage;

[0041] A vortex barrier 2, disposed in close - fitting relation to the sewage outlet, for preventing the generation of swirl when sewage is discharged from the sewage outlet;

[0042] A water collection tank 3 with one end open, disposed at the sewage outlet. The bottom of the water collection tank 3 is provided with a water collection outlet. Sewage enters the water collection tank 3 successively through the vortex barrier 2 and the open end of the water collection tank 3, and is discharged from the water collection outlet of the water collection tank 3; a drain valve is provided at the water collection outlet;

[0043] An oil stain adsorption assembly 4, disposed on the sewage tank 1, for adsorbing the oil stains in the sewage in the sewage tank 1;

[0044] An oil quantity sensor 5 is arranged in the water collecting tank 3 for detecting the oil content in the sewage entering the water collecting tank 3.

[0045] A controller is signal-connected to the control end of the oil quantity sensor 5 and the drain valve. The controller is used to open or close the drain valve according to the detection result of the oil quantity sensor 5.

[0046] For the oil-containing sewage storage device provided by the present invention, the oil-containing sewage enters from the sewage inlet of the sewage tank 1, is stored in the sewage tank 1, and is discharged from the sewage outlet. Usually, the sewage discharged from the sewage outlet is discharged through the sewage pipeline. In order to prevent the oil in the sewage from adhering to the inner wall of the sewage pipeline and causing the sewage pipeline to be blocked, an oil adsorption assembly 4 is provided to adsorb the oil in the sewage in the sewage tank 1. The oil in the sewage is removed by the oil adsorption assembly 4, and the sewage after removing the oil is discharged from the sewage outlet. When discharging the sewage, in order to avoid generating a swirl at the sewage outlet, a swirl barrier 2 is arranged at the sewage outlet. The generated swirl is destroyed by the rotating barrier 2 to prevent air from entering the subsequent sewage pipeline along with the sewage due to the generated swirl. The sewage enters the water collecting tank 3 after passing through the swirl barrier 2. An oil quantity sensor 5 is arranged in the water collecting tank 3 to detect the oil content in the sewage in the water collecting tank 3, so as to determine the oil content, which is convenient for the staff to judge the adsorption effect of the oil adsorption assembly 4 according to the detection result of the oil quantity sensor 5. A drain valve is arranged at the water outlet of the water collecting tank 3. The controller is signal-connected to the oil quantity sensor 5 and the drain valve. The controller opens or closes the drain valve according to the detection result of the oil quantity sensor 5 to control the timing of discharging the sewage from the sewage tank 1. The oil-containing sewage storage device provided by the present invention not only facilitates the storage of oil-containing sewage, but also can treat the oil in the oil-containing sewage, thus avoiding the blockage of the sewage pipeline caused by excessive oil in the sewage when discharging the sewage later, and solving the problem that the sewage pipeline is easily blocked due to excessive oil content in the sewage when discharging the sewage in the sewage tank in the prior art.

[0047] In one embodiment, in order to prevent the generation of eddy currents when discharging sewage, the swirl barrier 2 includes: an anti-eddy current baffle 21 and an annular retaining ring 22;

[0048] A plurality of filter holes are formed in the retaining ring 22. One end of the retaining ring 22 is attached to the sewage outlet, and the retaining ring 22 protrudes from the sewage outlet by a first given height.

[0049] The anti-eddy current baffle 21 is arranged at the other end of the retaining ring 22 for preventing the generation of swirl when the sewage is discharged from the sewage outlet.

[0050] The swirl barrier 2 further includes: a filter membrane laid on the anti-eddy current baffle 21 for filtering the oil in the sewage.

[0051] As shown Figure 1 in the figure, the retaining ring 22 is a circular ring structure. One end of the retaining ring 22 is attached along the sewage outlet, that is, the retaining ring 22 encloses the sewage outlet within it. Filter holes are provided on the retaining ring 22, and sewage can pass through the filter holes on the retaining ring 22 and enter the water collecting tank 3. The oil and impurities in the sewage can be filtered through the filter holes on the retaining ring 22. A vortex prevention baffle 21 is buckled on the other end of the retaining ring 22. The diameter of the vortex prevention baffle 21 is d2. The generation of vortex can be prevented through the vortex prevention baffle 21, and sewage can smoothly enter the water collecting tank 3 through the vortex prevention baffle 21. The water collecting tank 3 is a cylindrical structure with one end open. The open end of the water collecting tank 3 is arranged at the sewage outlet and extends into the sewage tank 1. The depth of the water collecting tank 3 extending into the sewage tank 1 is a given depth h1. The inner diameter of the water collecting tank 3 is d3. A water collecting outlet is provided at the bottom of the water collecting tank 3. The water collecting outlet is usually connected to a sewage pipeline, and the diameter of the sewage pipeline is d1. The sewage entering the water collecting tank 3 is discharged from the water collecting outlet provided at the bottom of the tank and discharged to a designated area through the sewage pipeline. In order to achieve the best sewage discharge effect, when designing the diameter d2 of the vortex prevention baffle 21 and the inner diameter d3 of the water collecting tank 3, the reference formula is d2 = (0.5 - 10) * d3. When designing the diameter d1 of the sewage pipeline, the reference formula is π * d3 * h2 ≥ π * (d1 / 2)^2, where h2 is the distance between the end face of the open end of the water collecting tank 3 and the surface in contact with the retaining ring 22 and the vortex prevention baffle 21. In order to further filter the oil in the sewage, a filter membrane is laid on the vortex prevention baffle 21, and the sewage flowing through the vortex prevention baffle 21 is further filtered through the filter membrane, improving the filtering effect of the sewage. At the same time, a filter membrane can also be set on the retaining ring 22, so that the sewage passing through the filter holes of the retaining ring 22 is also filtered.

[0052] In order to know the sewage level in the sewage tank 1 and facilitate the oil absorption component 4 to absorb the oil in the sewage, the oil-containing sewage storage device further includes: a water level detector, which is arranged in the sewage tank 1 and is used to detect and send the sewage level value in the sewage tank 1.

[0053] A first inlet and outlet and a second inlet and outlet are provided at the top of the sewage tank 1;

[0054] The oil absorption component 4 includes: an oil absorption cloth 41, a cloth releasing roller 42, a cloth winding roller 43 and a plurality of tension rollers 44;

[0055] Both the cloth releasing roller 42 and the cloth winding roller 43 are arranged on the outer side surface of the top of the sewage tank 1;

[0056] One end of the oil absorption cloth 41 is wound around the cloth releasing roller 42, the other end passes through the first inlet and outlet and enters the sewage tank 1, and passes out through the second inlet and outlet and is wound around the cloth winding roller 43;

[0057] A plurality of tension rollers 44 are arranged in the sewage tank 1 for tensioning the oil-absorbing cloth 41 so that the oil-absorbing cloth 41 contacts the sewage in the sewage tank 1, and the oil in the sewage is adsorbed by the oil-absorbing cloth 41.

[0058] The oil adsorption assembly 4 further includes a plurality of telescopic rods 45;

[0059] Each tension roller 44 is arranged in the sewage tank 1 through a telescopic rod 45, and each telescopic rod 45 adjusts the distance between the corresponding tension roller 44 and the sewage surface in the sewage tank 1 through telescopic movement;

[0060] The controller is signal-connected to the water level detector and the driving end of the telescopic rod 45, and the controller is further configured to control the telescopic amount of each telescopic rod 45 according to the sewage water level value.

[0061] As Figure 1 shown, usually the oil in the sewage floats on the sewage surface. In order to facilitate the removal of the oil in the sewage, the oil-absorbing cloth 41 is arranged to enter the sewage tank 1 to adsorb the oil on the sewage surface. The cloth-releasing roller 42 releases the oil-absorbing cloth 41. The oil-absorbing cloth 41 enters the sewage tank 1 through the first inlet and outlet, and is tensioned by a plurality of tension rollers 44 arranged in the sewage tank 1 so that the oil-absorbing cloth is immersed in the sewage to adsorb the oil. The oil-absorbing cloth 41 adsorbed with oil passes out of the sewage tank 1 from the second inlet and outlet and is collected and tidied by the cloth-collecting roller 43. In order to ensure that the oil-absorbing cloth 41 can still be immersed in the sewage to adsorb the oil when the sewage surface changes, each tension roller 44 is arranged in the sewage tank 1 through a telescopic rod 45. As Figure 1 shown, the telescopic movement of the telescopic rod 45 can drive the tension roller 44 to approach or move away from the sewage surface, and then drive the oil-absorbing cloth 41 tensioned by the tension roller 44 to approach or move away from the sewage surface. In order to better control the telescopic amount of the telescopic rod 45, the controller is signal-connected to the water level detector and the driving end of the telescopic rod 45, and the controller controls the telescopic amount of the telescopic rod 45 according to the specific sewage water level value, so as to ensure that the oil-absorbing cloth 41 can adsorb the oil in the sewage.

[0062] When the oil-absorbing cloth 41 passes out of the second inlet and outlet, in order to prevent the sewage on the oil-absorbing cloth 41 from dripping randomly, specifically, the oil adsorption assembly 4 further includes: a water guide plate 46, which is arranged at the second inlet and outlet for guiding the sewage dripped from the oil-absorbing cloth 41 into the sewage tank 1 through the second inlet and outlet. As Figure 1 shown, the water guide plate 46 has a vertical part and an inclined part. The vertical part is arranged along the hole edge of the second inlet and outlet, and the inclined part is arranged below the cloth-collecting roller 43. In this way, when there is sewage dripping on the oil-absorbing cloth 41 collected and tidied by the cloth-collecting roller 43, the sewage will drip onto the inclined part of the water guide plate 46, and the sewage is guided by the inclined part and finally flows back into the sewage tank 1 along the second inlet and outlet, thus facilitating the sewage recovery. As Figure 1As shown in the figure, a waterproof plate 47 is also provided at the second inlet and outlet, and the waterproof plate 47 is used to prevent sewage from splashing everywhere on the oil-absorbing cloth 41 when the oil-absorbing cloth 41 passes through the sewage tank 1.

[0063] When removing oil stains from sewage, too high or too low sewage temperature will affect the removal effect of oil stains. The oil-containing sewage storage device includes: a temperature sensor, which is arranged in the sewage tank 1 and is used to detect the sewage temperature in the sewage tank 1.

[0064] The oil-containing sewage storage device further includes: a water temperature adjustment component, which is arranged on the sewage tank 1 and is used to adjust the sewage temperature in the sewage tank 1.

[0065] The water temperature adjustment component includes: a delivery pump and a temperature control pipe laid on the body of the sewage tank 1;

[0066] The delivery pump is used to deliver a temperature adjustment medium into the temperature control pipe to adjust the sewage temperature in the sewage tank 1.

[0067] The controller is signal-connected to the temperature sensor and the delivery pump, and the controller is also used to turn on or off the delivery pump according to the sewage temperature value.

[0068] Too low or too high sewage water temperature is not conducive to the adsorption treatment of oil stains. The sewage water temperature is detected by the temperature sensor arranged in the sewage tank 1, and the controller controls the turning on or off of the delivery pump according to the sewage water temperature. When it is detected that the sewage temperature is too high, the delivery pump is turned on to deliver a low-temperature temperature adjustment medium into the temperature control pipe, and the temperature adjustment medium in the temperature control pipe exchanges heat with the sewage to adjust the sewage water temperature. When it is detected that the sewage temperature is too low, the delivery pump starts to deliver a high-temperature temperature adjustment medium into the temperature control pipe to adjust the sewage water temperature. The adjustment medium can be a liquid or a gas. In this way, even in winter with a relatively low temperature or in summer with a relatively high temperature, the water temperature in the sewage tank 1 can be adjusted through the water temperature adjustment component, so that the sewage temperature is maintained within the temperature range with the best oil stain treatment effect.

[0069] The oil-containing sewage storage device provided by the present invention allows oil-containing sewage to enter through the sewage inlet of the sewage tank, be stored in the sewage tank, and discharged through the sewage outlet. To avoid the generation of swirl at the sewage outlet when discharging sewage, a swirl barrier is provided at the sewage outlet. The swirl barrier prevents air from entering the subsequent sewage pipeline along with the sewage due to the generation of swirl when the sewage is discharged from the sewage outlet. To prevent the oil in the sewage from entering the subsequent sewage pipeline when the sewage is discharged from the sewage tank and causing blockage of the sewage pipeline, an oil adsorption component is provided. The oil adsorption component adsorbs the oil in the sewage to avoid the oil adhering to the inner wall of the sewage pipeline during subsequent sewage discharge and causing pipeline blockage. To obtain the oil content in the sewage, an oil quantity sensor is installed in the water collecting tank provided at the sewage outlet. The sewage enters the water collecting tank through the swirl barrier, and the oil quantity sensor detects the oil content in the sewage in the water collecting tank, thereby facilitating the staff to accurately know the adsorption effect of the oil adsorption component and avoiding the blockage of the subsequent sewage pipeline due to excessive oil content when discharging sewage. At the same time, the controller controls the drain valve to open and discharge the sewage or close and stop discharging the sewage according to the detection result of the oil quantity sensor. The oil-containing sewage storage device provided by the present invention solves the problem that the sewage pipeline is prone to blockage due to excessive oil content in the sewage when discharging the sewage in the sewage tank in the prior art.

[0070] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0071] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, they can be combined in any suitable way without conflict. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods.

[0072] Furthermore, any combination can be made among various different embodiments of the present invention as long as it does not violate the idea of the embodiments of the present invention, and it should also be regarded as the content disclosed by the embodiments of the present invention.

Claims

1. An oily sewage storage device, characterized in that, The oily sewage storage device includes: A sewage tank (1) having a sewage inlet and a sewage outlet for storing oily sewage; A vortex barrier (2) disposed in contact with the sewage outlet for preventing swirl when the sewage is discharged from the sewage outlet; A water collecting tank (3) with one end open is disposed at the sewage outlet. A water collecting outlet is formed at the bottom of the water collecting tank (3). The sewage enters the water collecting tank (3) through the vortex barrier (2) and the open end of the water collecting tank (3) in sequence and is discharged from the water collecting outlet of the water collecting tank (3); a drain valve is disposed at the water collecting outlet; An oil pollution adsorption assembly (4) is disposed on the sewage tank (1) for adsorbing the oil pollution in the sewage in the sewage tank (1); An oil quantity sensor (5) is disposed in the water collecting tank (3) for detecting the oil content in the sewage entering the water collecting tank (3); A controller is signal-connected to the control end of the oil quantity sensor (5) and the drain valve. The controller is used to open or close the drain valve according to the detection result of the oil quantity sensor (5).

2. The oil-containing sewage storage device according to claim 1, characterized in that, The vortex barrier (2) includes: an anti-vortex baffle (21) and an annular retaining ring (22); A plurality of filter holes are formed in the retaining ring (22). One end of the retaining ring (22) is disposed in contact with the sewage outlet, and the retaining ring (22) protrudes from the sewage outlet by a first given height; The anti-vortex baffle (21) is disposed at the other end of the retaining ring (22) for preventing swirl when the sewage is discharged from the sewage outlet.

3. The oil-containing sewage storage device according to claim 2, characterized in that The vortex barrier (2) further includes a filter membrane laid on the anti-vortex baffle (21) for filtering the oil pollution in the sewage.

4. The oil-containing sewage storage device according to claim 1, characterized in that, The oily sewage storage device further includes a water level detector disposed in the sewage tank (1) for detecting the sewage level in the sewage tank (1).

5. The oil-containing sewage storage device according to claim 4, characterized in that, A first inlet and a second inlet are formed at the top of the sewage tank (1); The oil pollution adsorption assembly (4) includes: an oil absorption cloth (41), a cloth releasing roller (42), a cloth winding roller (43) and a plurality of tension rollers (44); Both the cloth releasing roller (42) and the cloth winding roller (43) are disposed on the outer side surface of the top of the sewage tank (1); One end of the oil absorption cloth (41) is wound around the cloth releasing roller (42), and the other end passes through the first inlet and enters the sewage tank (1) and passes out through the second inlet and is wound around the cloth winding roller (43); A plurality of tension rollers (44) are disposed in the sewage tank (1) for tensioning the oil absorption cloth (41) so that the oil absorption cloth (41) contacts the sewage in the sewage tank (1), and the oil pollution in the sewage is adsorbed by the oil absorption cloth (41).

6. The oil-containing sewage storage device according to claim 5, wherein, The oil pollution adsorption assembly (4) further includes a plurality of telescopic rods (45); Each tension roller (44) is disposed in the sewage tank (1) through a telescopic rod (45). Each telescopic rod (45) adjusts the distance between the corresponding tension roller (44) and the sewage water surface in the sewage tank (1) through telescopic movement. The controller is signal-connected to the water level detector and the driving end of the telescopic rod (45), and the controller is further configured to control the telescopic amount of each telescopic rod (45) according to the sewage water level value.

7. The oil-containing sewage storage device according to claim 5, characterized in that, The oil pollution adsorption assembly (4) further includes: a water guide plate (46), which is arranged at the second inlet and outlet and is used to guide the sewage dripping from the oil absorption cloth (41) into the sewage tank (1) through the second inlet and outlet.

8. The oily sewage storage device according to claim 1, characterized in that, The oil-containing sewage storage device includes: a temperature sensor, which is arranged in the sewage tank (1) and is used to detect the sewage temperature in the sewage tank (1).

9. The oily sewage storage device according to claim 8, characterized in that, The oil-containing sewage storage device further includes: a water temperature adjustment assembly, which is arranged on the sewage tank (1) and is used to adjust the sewage temperature in the sewage tank (1).

10. The oil-containing sewage storage device according to claim 9, characterized in that, The water temperature adjustment assembly includes: a delivery pump and a temperature control pipe laid on the tank body of the sewage tank (1); The delivery pump is used to deliver a temperature adjustment medium into the temperature control pipe to adjust the sewage temperature in the sewage tank (1); The controller is signal-connected to the temperature sensor and the delivery pump, and the controller is further configured to turn on or off the delivery pump according to the sewage temperature value.

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