Oil-water separator with sediment device

Abstract

The oil-water separator with the sediment device comprises a box body, a sediment bin, a gravity separation bin and a filter box, the sediment bin and the gravity separation bin are arranged in the box body through a partition plate, a conical bottom sedimentation area is further arranged at the bottom of the sediment bin, rotating shafts are arranged in the gravity separation bin side by side, and the filter box is arranged in the sediment bin. A first parallel plate and a second parallel plate which are arranged in a staggered mode are installed on every two adjacent rotating shafts, and the first parallel plates and the second parallel plates are sequentially and movably connected through connecting rods; a filter element assembly composed of a quartz sand filter layer, an anthracite filter layer, a glass fiber filter layer and an activated carbon filter layer is arranged in the filter box. The oil-water separator with the sediment device has the remarkable beneficial effects of improving the oil-water separation efficiency, optimizing the oil drop coalescence process, enhancing the oil drop adhesion, intelligently controlling the liquid level, improving the water quality, conveniently operating and maintaining, saving energy, reducing emission and the like.

Description

Technical Field

[0001] This utility model relates to the field of oil-water separation technology, specifically to an oil-water separator with a sedimentation device. Background Technology

[0002] If oily wastewater is discharged directly without effective treatment, it will not only cause serious pollution to the aquatic environment, disrupt the ecological balance, and affect the survival and reproduction of aquatic organisms, but may also lead to soil pollution, posing a potential threat to the surrounding ecosystem and human health. Therefore, efficient and reliable oil-water separation technologies and equipment have become a research focus and urgent need in the field of environmental protection.

[0003] Currently, commercially available oil-water separators have some shortcomings in practical applications. Firstly, they are ineffective at separating solid sediment from oil-water mixtures in wastewater. Many traditional oil-water separators lack a properly designed sedimentation device, making it difficult to effectively separate solid sediment from the oil-water mixture. Sediment easily accumulates inside the equipment, affecting normal operation and potentially causing secondary pollution, thus reducing separation efficiency. Secondly, some existing device designs are not optimized for oil droplet coalescence and separation. For example, oil droplets have limited collision opportunities within the separation equipment, making it difficult for them to quickly coalesce into larger droplets and float, thus affecting the speed and effectiveness of oil-water separation. Simultaneously, the surface properties of components used to promote oil droplet adhesion and coalescence are not ideal, making it difficult for oil droplets to adhere to these surfaces, further hindering coalescence and separation. Furthermore, in terms of water filtration, some existing oil-water separator filtration systems are inadequate. Using only simple filtration methods or single filter materials cannot effectively remove suspended solids, organic matter, and other impurities from the water, failing to meet increasingly stringent environmental emission standards and the requirements for effluent quality in practical applications. Utility Model Content

[0004] The purpose of this invention is to provide an oil-water separator with a sedimentation device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an oil-water separator with a sludge settling device, comprising a housing, a sludge settling chamber, a gravity separation chamber, and a filter box. The housing is provided with a sludge settling chamber and a gravity separation chamber by means of a partition. An overflow port is provided at the top of the partition. A metal filter screen is installed on the top of the partition on one side of the overflow port by means of a bracket. A conical bottom sedimentation zone is also provided at the bottom of the sludge settling chamber.

[0006] The gravity separation chamber has rotating shafts arranged in parallel inside. Parallel plates one and two are installed on each pair of adjacent rotating shafts in an alternating manner. Parallel plates one and two are connected in sequence by connecting rods. The surfaces of parallel plates one and two are uniformly coated with polytetrafluoroethylene. An oil collection area is provided above the gravity separation chamber. A liquid level sensor is installed on the inner wall of the top of the gravity separation chamber.

[0007] The filter box is located at one end of the box body, and the water inlet pipe of the filter box extends through the water outlet of the box body to the interior of the gravity separation chamber. The interior of the filter box is equipped with a filter element assembly consisting of a quartz sand filter layer, an anthracite filter layer, a glass fiber filter layer and an activated carbon filter layer.

[0008] Preferably, the top of one end of the tank is provided with a water inlet communicating with the sedimentation bin, and an inlet guide pipe is provided on the outside of the water inlet. The top of the other end of the tank is provided with an oil outlet communicating with the oil collection area, and an oil discharge pipe is provided on the outside of the oil outlet.

[0009] Preferably, the bottom of the housing is provided with a base support, and the top of the housing is equipped with a controller. An inspection port is also provided on the top of the housing at the position corresponding to the metal filter plate.

[0010] Preferably, a servo motor is installed on one side of the housing at the position corresponding to the rotating shaft, and the drive shaft of the servo motor is fixedly connected to one of the rotating shafts.

[0011] Preferably, a slag discharge pipe extending to the bottom of the conical bottom sedimentation zone is installed at the position corresponding to the slag bin at the bottom of the box body, and a knob valve is installed on the slag discharge pipe.

[0012] Preferably, the filter element assembly is detachably installed inside the filter box, and an opening for installing the filter element assembly is provided on one side of the filter box, and a water outlet pipe is provided at the bottom of the filter box.

[0013] This utility model provides an oil-water separator with a sedimentation device, which has significant advantages and positive effects compared with the prior art, specifically reflected in the following aspects:

[0014] 1. Highly efficient separation of solid sludge and oil-water mixtures:

[0015] This invention, by incorporating a sedimentation chamber and a gravity separation chamber within the casing, enables the rapid and efficient separation of solid sediment from oil-water mixtures in wastewater. Upon entering the sedimentation chamber, the solid sediment, under the influence of gravity, quickly slides down the inclined plate surface to the conical bottom settling zone, while the oil-water mixture continues to flow upwards. The conical bottom settling zone design facilitates the centralized collection and discharge of sediment, effectively preventing secondary pollution during the separation process and improving separation efficiency.

[0016] 2. Optimize the oil droplet coalescence process:

[0017] Inside the gravity separation chamber, parallel shafts are mounted side-by-side with staggered parallel plates one and two. This design ensures sufficient collision opportunities for oil droplets without obstructing water flow. Parallel plates one and two are sequentially connected by connecting rods. Driven by a servo motor, the tilt angle of the parallel plates can be stably changed or fixed, making it easier for oil droplets to adhere to the plate surface, promoting the coalescence process, and accelerating the rise of oil droplets to the oil collection area.

[0018] 3. Enhances oil droplet adhesion:

[0019] The surfaces of parallel plates one and two are uniformly coated with polytetrafluoroethylene. This coating has good oleophilicity and hydrophobicity, which makes it easier for oil droplets to adhere to the plate surface, further promoting the coalescence and floating of oil droplets, and improving the oil-water separation effect.

[0020] 4. Intelligent liquid level control:

[0021] A liquid level sensor is installed on the inner wall of the top of the gravity separation chamber. By monitoring changes in the water level in real time, the water inflow can be adjusted and the water level controlled to ensure that the oil layer in the oil collection area can be smoothly discharged. At the same time, it avoids excessive oil content in the water layer, thus improving the accuracy and efficiency of oil-water separation.

[0022] 5. Multi-stage filtration improves water quality:

[0023] The filter cartridges inside the filter box consist of a quartz sand filter layer, an anthracite filter layer, a glass fiber filter layer, and an activated carbon filter layer, forming a multi-stage filtration system. This system can effectively remove suspended solids, organic matter, and other impurities from the water, further improving the quality of the effluent and meeting higher environmental protection requirements.

[0024] 6. The structure is reasonably designed and the operation and maintenance are convenient:

[0025] The top of one end of the housing has a water inlet connecting to the sedimentation tank, while the other end has an oil outlet connecting to the oil collection area. This rational structural design facilitates water intake and oil discharge. A base support is located at the bottom of the housing, and a controller is mounted at the top. An inspection port is also provided at the location corresponding to the metal filter screen, facilitating installation, operation, and maintenance. The filter element assembly is detachable and installed inside the filter box, allowing for convenient periodic replacement and cleaning, thus extending the equipment's service life.

[0026] 7. Energy conservation and emission reduction, with significant environmental benefits:

[0027] This invention reduces the discharge of oil and suspended solids into wastewater through efficient oil-water separation and sediment treatment, thereby lowering environmental pollution. Simultaneously, the application of a multi-stage filtration system reduces the burden on subsequent treatment processes and lowers treatment costs, resulting in significant environmental benefits.

[0028] In summary, the oil-water separator with sedimentation device of this invention has significant beneficial effects in improving oil-water separation efficiency, optimizing the oil droplet coalescence process, enhancing oil droplet adhesion, intelligent liquid level control, improving water quality, facilitating operation and maintenance, and saving energy and reducing emissions. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the internal structure of the present invention;

[0030] Figure 2 This is a top view of the structure of this utility model;

[0031] Figure 3 This is a schematic diagram of the internal structure of the filter box of this utility model;

[0032] Figure 4 This is a schematic diagram of the parallel plate structure of this utility model;

[0033] In the diagram: 1. Box body; 2. Sludge bin; 3. Inlet guide pipe; 4. Water inlet; 5. Metal filter screen; 6. Conical bottom sedimentation zone; 7. Bracket; 8. Overflow port; 9. Oil collection area; 10. Oil outlet; 11. Oil drain pipe; 12. Water outlet; 13. Filter box; 14. Gravity separation bin; 15. Rotating shaft; 16. Connecting rod; 17. Parallel plate one; 18. Baffle plate; 19. Knob valve; 20. Sludge discharge pipe; 21. Base bracket; 22. Controller; 23. Inspection port; 24. Servo motor; 25. Parallel plate two; 26. PTFE coating; 27. Water inlet pipe; 28. Filter element assembly; 29. ​​Quartz sand filter layer; 30. Anthracite filter layer; 31. Glass fiber filter layer; 32. Activated carbon filter layer; 33. Water outlet pipe; 34. Liquid level sensor. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0035] Please see Figure 1-4An embodiment of this utility model is provided: an oil-water separator with a sludge settling device, including a housing 1, a sludge chamber 2, a gravity separation chamber 14 and a filter box 13. The sludge chamber 2 and the gravity separation chamber 14 are arranged inside the housing 1 through a partition 18. An overflow port 8 is provided at the top of the partition 18, and a metal filter screen plate 5 is installed on the top of the partition 18 on one side of the overflow port 8 through a bracket 7. A conical bottom sedimentation zone 6 is also provided at the bottom of the sludge chamber 2.

[0036] At the bottom of the box 1, corresponding to the position of the sludge bin 2, a slag discharge pipe 20 is installed that extends to the bottom of the conical bottom sedimentation zone 6, and a knob valve 19 is installed on the slag discharge pipe 20.

[0037] The bottom of the housing 1 is provided with a base support 21, and the top of the housing 1 is provided with a controller 22. The top of the housing 1 is also provided with an inspection port 23 corresponding to the position of the metal filter plate 5.

[0038] The housing 1 is the outer shell of the oil-water separator, made of high-strength stainless steel, which has good corrosion resistance and sealing performance. The internal space of the housing 1 is divided into two main areas, a sedimentation chamber 2 and a gravity separation chamber 14, by a partition 18.

[0039] The sedimentation chamber 2 is located on one side of the tank 1 and is mainly used to collect solid impurities in the oil-water mixture. The bottom of the sedimentation chamber 2 is designed as a conical bottom settling zone 6, which helps to concentrate and discharge sediment. A slag discharge pipe 20 is provided at the bottom of the conical bottom settling zone 6, which extends to the inner bottom end of the conical bottom settling zone 6 to ensure that the settled impurities can be completely discharged.

[0040] The gravity separation chamber 14 is located on the other side of the housing 1 and is mainly used for oil-water separation. An overflow port 8 is provided at the top of the partition 18. The oil-water mixture enters the gravity separation chamber 14 through the overflow port 8 under the influence of gravity. A metal filter plate 5 is installed on the top of the partition 18 on the side of the overflow port 8 via a bracket 7. The metal filter plate 5 can further filter out fine impurities in the oil-water mixture, ensuring effective separation.

[0041] The slag discharge pipe 20 is installed at the bottom of the tank 1 at the position corresponding to the slag bin 2, extending to the bottom of the conical bottom sedimentation zone 6. A rotary valve 19 is installed on the slag discharge pipe 20, which can be used to control the opening and closing of the slag discharge pipe for convenient periodic slag discharge.

[0042] The base bracket 21 is installed at the bottom of the housing 1 to support the entire oil-water separator and ensure its stable placement. The base bracket 21 is made of sturdy metal material and has good load-bearing capacity and stability.

[0043] A controller 22 is installed on the top of the housing 1 to control the operating parameters and modes of the oil-water separator. The controller 22 adopts an intelligent design, which can monitor the working status of the oil-water separator in real time and provide operation prompts.

[0044] A maintenance port 23 is also provided at the top of the housing 1, corresponding to the position of the metal filter plate 5. The design of the maintenance port 23 facilitates the regular cleaning and maintenance of the metal filter plate 5 to ensure its filtration effect.

[0045] Inside the gravity separation chamber 14, there are rotating shafts 15 arranged in parallel. A servo motor 24 is installed on one side of the chamber 1 at the position corresponding to the rotating shaft 15, and the drive shaft of the servo motor 24 is fixedly connected to one of the rotating shafts 15.

[0046] Parallel plates 17 and 25 are installed on each pair of adjacent rotating shafts 15 in an alternating manner. Parallel plates 17 and 25 are connected in sequence by connecting rods 16. The surfaces of parallel plates 17 and 25 are uniformly coated with polytetrafluoroethylene coating 26. An oil collection area 9 is provided above the gravity separation chamber 14, and a liquid level sensor 34 is installed on the inner wall of the top of the gravity separation chamber 14.

[0047] The top of one end of the tank 1 is provided with an inlet 4 that communicates with the sedimentation bin 2. An inlet guide pipe 3 is provided on the outside of the inlet 4. The top of the other end of the tank 1 is provided with an oil outlet 10 that communicates with the oil collection area 9. An oil discharge pipe 11 is provided on the outside of the oil outlet 10.

[0048] The gravity separation chamber 14 of this utility model has multiple rotating shafts 15 arranged in parallel inside. A servo motor 24 is installed on one side of the housing 1 at the position corresponding to the rotating shaft 15. The drive shaft of the servo motor 24 is fixedly connected to one of the rotating shafts 15 and is used to drive the rotating shaft 15 to rotate.

[0049] Parallel plates 17 and 25 are installed alternately on each pair of adjacent rotating shafts 15. Parallel plates 17 and 25 are sequentially connected by connecting rods 16 to form a movable parallel plate structure. The surfaces of parallel plates 17 and 25 are uniformly coated with polytetrafluoroethylene (PTFE) coating 26 to reduce the adhesion of oil-water mixtures on the plate surface and improve separation efficiency.

[0050] An oil collection area 9 is provided above the gravity separation chamber 14 to collect the separated oil layer. A liquid level sensor 34 is installed on the inner wall of the top of the gravity separation chamber 14 to monitor the liquid level changes in the chamber in real time, so as to control the water intake and oil discharge process.

[0051] The top of one end of the tank 1 is provided with a water inlet 4 that communicates with the sedimentation chamber 2. An inlet guide pipe 3 is provided on the outside of the water inlet 4 to guide the oil-water mixture into the gravity separation chamber 14. The top of the other end of the tank 1 is provided with an oil outlet 10 that communicates with the oil collection area 9. An oil discharge pipe 11 is provided on the outside of the oil outlet 10 to discharge the separated oil layer.

[0052] When the oil-water mixture enters the gravity separation chamber 14 through the inlet guide pipe 3, it begins to separate into layers under the influence of gravity. Due to the difference in density between oil and water, the oil layer floats above the water layer.

[0053] Servo motor 24 drives one of the rotating shafts 15 to rotate, which in turn drives the adjacent parallel plates 17 and 25 to move alternately via connecting rod 16. This motion effectively agitates the oil-water mixture and accelerates the oil-water separation process.

[0054] The polytetrafluoroethylene coating 26 on the surfaces of parallel plate 17 and parallel plate 25 reduces the adhesion of oil-water mixture on the plate surface, making the separation process smoother.

[0055] As oil-water separation proceeds, the oil layer gradually rises and enters the oil collection area 9. The level sensor 34 monitors the changes in the liquid level in the tank in real time. When the oil layer reaches a certain height, the control system activates the drain pipe 11 to discharge the separated oil layer.

[0056] The filter box 13 is located at one end of the box body 1, and the water inlet pipe 27 of the filter box 13 extends through the water outlet 12 of the box body 1 to the inside of the gravity separation chamber 14. The filter box 13 is equipped with a filter element assembly 28 consisting of a quartz sand filter layer 29, anthracite filter layer 30, glass fiber filter layer 31 and activated carbon filter layer 32.

[0057] The filter element assembly 28 is detachably installed inside the filter box 13, and an opening for installing the filter element assembly 28 is provided on one side of the filter box 13. A water outlet pipe 33 is also provided at the bottom of the filter box 13.

[0058] The water purification device of this utility model mainly consists of a housing 1, a filter box 13, a gravity separation chamber 14, and its internal components. The housing 1 is the main part of the overall structure, and its material is preferably corrosion-resistant, high-strength stainless steel or plastic.

[0059] Filter box 13 is located at one end of box body 1, the specific location is as follows: Figure 1 As shown in the diagram, the inlet pipe 27 of the filter box 13 passes through the outlet hole 12 of the box body 1 and extends into the interior of the gravity separation chamber 14. This design allows the raw water to undergo preliminary impurity separation in the gravity separation chamber 14 before entering the filter box 13, thereby improving the overall purification effect.

[0060] The filter box 13 contains a filter element assembly 28, which consists of multiple layers of different materials, specifically including a quartz sand filter layer 29, an anthracite filter layer 30, a glass fiber filter layer 31, and an activated carbon filter layer 32. The filter layers are arranged from top to bottom as follows: quartz sand filter layer 29, anthracite filter layer 30, glass fiber filter layer 31, and activated carbon filter layer 32. This multi-layer filter design effectively removes suspended solids, organic matter, heavy metal ions, and other impurities from the water, ensuring the quality of the effluent.

[0061] The filter element assembly 28 features a detachable structure for easy daily maintenance and replacement. An opening for installing the filter element assembly 28 is provided on one side of the filter box 13, allowing users to easily remove and install it. A water outlet pipe 33 is also provided at the bottom of the filter box 13, through which purified water is discharged.

[0062] When this application embodiment is used,

[0063] Water intake stage: Oily wastewater (oil-water mixture) enters the sedimentation tank 2 from the inlet 4 at the top of one end of the tank 1 through the inlet guide pipe 3. The inlet guide pipe 3 guides the water flow, allowing the wastewater to flow into the sedimentation tank 2 relatively smoothly.

[0064] Sedimentation stage: After the wastewater enters the sedimentation chamber 2, the solid impurities within it, under the influence of gravity, slide rapidly down the inner wall of the chamber or any existing inclined plates or other structures to the conical bottom sedimentation zone 6. The design of the conical bottom sedimentation zone 6 allows for concentrated collection of sediment. A metal filter screen 5 is installed on top of the baffle 18 on one side of the overflow port 8. It further filters out fine solid impurities in the wastewater, preventing these impurities from entering the gravity separation chamber 14 and affecting the subsequent oil-water separation effect. After initial separation, solid sediment remains in the conical bottom sedimentation zone 6 at the bottom of the sedimentation chamber 2, while the clearer oil-water mixture continues to flow upwards and enters the gravity separation chamber 14 through the overflow port 8 at the top of the baffle 18.

[0065] Gravity separation and oil droplet coalescence stage: After the oil-water mixture enters the gravity separation chamber 14, due to the density difference between oil and water, it begins to naturally separate into layers under the action of gravity, with the oil layer gradually floating above the water layer. At this time, the servo motor 24 starts, driving the rotating shaft 15, which is fixedly connected to its drive shaft, to rotate. Since parallel plates 17 and 25 are installed on each pair of adjacent rotating shafts 15 in an alternating manner, and parallel plates 17 and 25 are connected sequentially by connecting rods 16, the rotation of one rotating shaft 15 will drive the adjacent parallel plates 17 and 25 to move in an alternating manner through the connecting rods 16. This alternating movement effectively disturbs the oil-water mixture, increases the collision opportunities between oil droplets, and accelerates the oil droplet coalescence process. At the same time, the polytetrafluoroethylene coating 26 uniformly distributed on the surface of parallel plates 17 and 25 has oleophilic and hydrophobic properties, making it easier for oil droplets to adhere to the plate surface, further promoting the coalescence and floating of oil droplets. As the oil droplets continue to coalesce and grow larger, the oil layer gradually rises and enters the oil collection area 9 above the gravity separation chamber 14.

[0066] Liquid level monitoring and oil draining stage: The liquid level sensor 34 installed on the inner wall of the top of the gravity separation chamber 14 monitors the changes in the liquid level in the chamber in real time. When the oil layer in the oil collection area 9 reaches a certain height, the liquid level sensor 34 feeds back the signal to the controller 22, and the controller 22 starts the oil drain pipe 11 to discharge the separated oil layer through the oil outlet 10 at the top of the other end of the tank 1.

[0067] Water filtration stage: After initial separation in gravity separation chamber 14, the water enters the filter box 13 through inlet pipe 27 and outlet hole 12 of box body 1. The filter element assembly 28 inside filter box 13 consists of quartz sand filter layer 29, anthracite filter layer 30, glass fiber filter layer 31, and activated carbon filter layer 32. The water first passes through quartz sand filter layer 29 to remove larger suspended solids and impurities; then it passes through anthracite filter layer 30 to further filter smaller impurities and adsorb some organic matter; then it flows through glass fiber filter layer 31 to intercept even finer particles and some oil droplets; finally, it passes through activated carbon filter layer 32 to adsorb residual organic matter, odors, and pigments in the water. After multi-stage filtration, the purified water is discharged from outlet pipe 33 at the bottom of filter box 13.

[0068] Sludge removal and maintenance phase: Regularly open the knob valve 19 on the sludge removal pipe 20 to discharge the sludge from the conical bottom sedimentation zone 6 at the bottom of the sludge bin 2. Simultaneously, the metal filter screen 5 can be cleaned and maintained through the inspection port 23 on the top of the housing 1 to ensure its filtration effect. When the filtration effect of the filter element assembly 28 decreases after a period of use, it can be disassembled and replaced or cleaned through the opening on one side of the filter box 13 to ensure the water purification effect.

[0069] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0070] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, 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.

[0071] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0072] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An oil-water separator with a sedimentation device, comprising a housing (1), a sedimentation chamber (2), a gravity separation chamber (14), and a filter box (13), characterized in that: The interior of the box (1) is provided with a sludge bin (2) and a gravity separation bin (14) through a partition (18). An overflow port (8) is provided at the top of the partition (18), and a metal filter plate (5) is installed on the top of the partition (18) on one side of the overflow port (8) through a bracket (7). A conical bottom sedimentation zone (6) is also provided at the bottom of the sludge bin (2). The gravity separation chamber (14) has rotating shafts (15) arranged in parallel inside. Parallel plates one (17) and parallel plates two (25) are installed on each two adjacent rotating shafts (15). Parallel plates one (17) and parallel plates two (25) are connected in sequence by connecting rods (16). The surfaces of parallel plates one (17) and parallel plates two (25) are uniformly coated with polytetrafluoroethylene (PTFE) coating (26). An oil collection area (9) is provided above the gravity separation chamber (14). A liquid level sensor (34) is installed on the inner wall of the top of the gravity separation chamber (14). The filter box (13) is located at one end of the box body (1), and the water inlet pipe (27) of the filter box (13) extends through the water outlet (12) of the box body (1) to the interior of the gravity separation chamber (14). The interior of the filter box (13) is provided with a filter element assembly (28) consisting of a quartz sand filter layer (29), an anthracite filter layer (30), a glass fiber filter layer (31), and an activated carbon filter layer (32).

2. An oil-water separator with a sedimentation device according to claim 1, characterized in that: The top of one end of the box (1) is provided with a water inlet (4) that communicates with the sedimentation bin (2), and an inlet guide pipe (3) is provided on the outside of the water inlet (4). The top of the other end of the box (1) is provided with an oil outlet (10) that communicates with the oil collection area (9), and an oil discharge pipe (11) is provided on the outside of the oil outlet (10).

3. An oil-water separator with a sedimentation device according to claim 1, characterized in that: The bottom of the box (1) is provided with a base bracket (21), and the top of the box (1) is provided with a controller (22). The top of the box (1) is also provided with an inspection port (23) corresponding to the position of the metal filter plate (5).

4. An oil-water separator with a sedimentation device according to claim 1, characterized in that: A servo motor (24) is installed on one side of the housing (1) at the position corresponding to the rotating shaft (15), and the drive shaft of the servo motor (24) is fixedly connected to one of the rotating shafts (15).

5. An oil-water separator with a sedimentation device according to claim 1, characterized in that: The bottom of the box (1) is equipped with a slag discharge pipe (20) that extends to the bottom of the conical bottom sedimentation area (6) at the position corresponding to the slag bin (2), and a knob valve (19) is installed on the slag discharge pipe (20).

6. An oil-water separator with a sedimentation device according to claim 1, characterized in that: The filter element assembly (28) is detachably installed inside the filter box (13), and an opening for installing the filter element assembly (28) is provided on one side of the filter box (13). A water outlet pipe (33) is also provided at the bottom of the filter box (13).

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