Oil separation and precipitation device for oily wastewater

Abstract

The utility model relates to the technical field of wastewater treatment, in particular to an oil separation and precipitation device for oil-containing wastewater, which can perform precipitation and oil separation on waste oil for multiple times, ensure the separation effect of the waste oil and facilitate recycling of the waste oil. Comprising a box body, a water inlet pipe, a partition plate, a scraping component, an oil discharge component and an observation component, the water inlet pipe is installed on the left side of the top of the box body, the partition plate is installed in the box body and divides the interior of the box body into an upper cavity and a lower cavity, the top of the partition plate is obliquely arranged, and the scraping component is installed at the bottom of the partition plate; and an observation part is mounted on the right side wall of the box body.

Description

Technical Field

[0001] This utility model relates to the technical field of wastewater treatment, and in particular to an oil separation and sedimentation device for oily wastewater. Background Technology

[0002] With the rapid development of various industries today, a large amount of waste oil pollution is inevitably generated during industrial production. When mixed with water, it forms oily wastewater with a very complex composition. This oily wastewater contains floating oil, dispersed oil, emulsified oil, and other complex oil particles, which cause great difficulties in oil removal. If untreated oily wastewater is discharged indiscriminately, it will pollute our drinking water resources and also have a serious impact on irrigation and water absorption by crops. The prior art publication CN205634984U discloses a non-powered oil separator for efficiently treating oily wastewater, comprising a shell and an outlet pipe. The shell has an internal working chamber, within which a longitudinally arranged partition divides the working chamber into a left and right chamber. An inlet pipe is located on the left side of the shell. It also includes a base frame, upper support, lower support, and regulating pipe. A first and second observation port are located at the top of the shell, each equipped with an observation component. A return pipe is also included, with one end connected to the right chamber and the other end connected to the left chamber, located outside the shell. A control pump is mounted on the return pipe, and the outlet pipe is installed on it. However, this method fails to effectively separate waste oil from the wastewater, hindering recycling and resulting in low efficiency. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides an oil-water separation and sedimentation device that can perform multiple sedimentation and oil separation of waste oil, ensuring the separation effect of waste oil and facilitating recycling.

[0004] This utility model discloses an oil-water separation and sedimentation device for oily wastewater, comprising a tank, an inlet pipe, a partition, a scraping component, an oil discharge component, and an observation component. The inlet pipe is installed on the top left side of the tank. A partition is installed inside the tank, dividing the interior into upper and lower chambers. The top of the partition is inclined, and a scraping component is installed at the bottom. An oil discharge component and an observation component are installed on the right side wall of the tank. Oily wastewater enters the upper chamber through the inlet pipe, undergoing initial sedimentation and oil separation. The wastewater then slowly enters the lower chamber for secondary sedimentation and oil separation. After the wastewater in the upper chamber is drained, the top layer of oil is discharged through the oil discharge component. In the lower chamber, the scraping component scrapes and cleans the oil residue, ensuring effective separation. The observation component allows for direct observation of the internal separation process, making the device convenient to use.

[0005] Preferably, the assembly also includes a mounting bracket, a filter screen, a sealing plate, multiple drain pipes, multiple speed control valves, and a water outlet pipe. The mounting bracket is installed on the top of the upper chamber, located to the right of the output end of the inlet pipe. The filter screen is inserted into the left side wall of the housing, with its right end inside the mounting bracket. A sealing plate is installed on the left end of the filter screen, sealing it against the left side wall of the housing. Multiple drain pipes are installed on the right end of the partition, with speed control valves installed on the drain pipes. A water outlet pipe is installed at the lower part of the left side wall of the housing, connecting to the lower chamber. Oily wastewater is added to the housing through the inlet pipe, and the wastewater is filtered through the filter screen to remove impurities. The sealing plate is removed to take out the filter screen for easy maintenance and cleaning. The speed control valves are slightly opened to allow the wastewater to flow slowly down the drain pipe. As the wastewater flows down, the waste oil floats on top, thus allowing the water to flow out first.

[0006] Preferably, the oil scraping component includes multiple rectangular blocks, two threaded rods, two movable blocks, multiple vertical rods, a scraper, a sponge pad, a drive box, two gears, and a drive motor. The rectangular blocks and drain pipe are alternately installed at the bottom of the partition. Limiting grooves are formed at the bottom of the rectangular blocks. The threaded rods are installed in the two middle limiting grooves. The movable blocks are slidably installed in the limiting grooves and screwed onto the outer wall of the threaded rods. A vertical rod is installed at the bottom of the movable block, and a scraper is installed at the bottom of the vertical rod. A sponge pad is installed at the bottom of the scraper. The drive box is installed on the left side wall of the box. A gear is installed through the drive box at the input end of the threaded rod, and the two gears mesh. The drive motor is installed on the outer wall of the drive box, and its input end is connected to the input end of the gear. Starting the drive motor drives the gears to rotate, which in turn drives the threaded rods to rotate, causing the movable blocks to move within the limiting grooves. The vertical rods then drive the scraper and sponge pad to move parallel, scraping off the waste oil floating on top. Water is then discharged through the drain pipe.

[0007] Preferably, it also includes two guide rods and two sliders. The two guide rods are installed in the limiting grooves of the rectangular blocks on the front and rear sides. The sliders are slidably installed on the outer wall of the guide rods. The bottom of the sliders is connected to the top of the scraper through a vertical rod. When the scraper moves, it drives the sliders to slide in the outer wall of the guide rods and the limiting grooves, thereby limiting and guiding them, enhancing the connection strength, and ensuring the stability during movement.

[0008] Preferably, the oil draining component includes two sets of oil drain pipes, two manifolds, two outlet pipes, and two valves. Two first oil drain ports are opened on the upper part of the left side wall of the box, located above the partition. Two second oil drain ports matching the sponge pad are opened on the lower part of the left side wall of the box. The oil drain pipes are respectively installed at the first and second oil drain ports, and oil drain valves are installed on the oil drain pipes. The output end of the oil drain pipe is connected to the manifold, and an outlet pipe is connected to the rear side of the manifold. A valve is installed on the outlet pipe. After the water in the upper chamber has drained, the waste oil will float on top. Open the oil drain valve and valve of the upper oil drain pipe to let the oil flow out through the outlet pipe. When the water in the lower chamber is lower than the second oil drain port, the area above the outlet will be full of waste oil. Open the oil drain valve and valve of the lower oil drain pipe to let the waste oil be discharged through the lower outlet pipe.

[0009] Preferably, the observation component includes two observation windows, two rotating shafts, two scrapers, and two handles. The two observation windows are installed on the upper and lower sides of the right side wall of the housing, corresponding to the two chambers respectively. A rotating shaft is rotatably installed on the upper part of the observation window. A scraper is installed at one end of the rotating shaft inside the chamber, and a handle is installed at the other end. The observation windows facilitate the observation of the waste oil sedimentation in the chamber, making it easier to control and improve the oil drainage effect. The handle drives the rotating shaft to rotate, causing the scraper to clean the inner observation window, ensuring clear observation.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: oily wastewater enters the upper chamber inside the tank through the inlet pipe, allowing the wastewater to undergo the first sedimentation and oil separation. The wastewater then slowly enters the lower chamber for a second sedimentation and oil separation. After the wastewater in the upper chamber is drained, the oil at the top is discharged through the oil draining component. After the wastewater enters the lower chamber, the oil stains on the top are scraped and cleaned by the scraping component, allowing the oil stains to be discharged through the oil draining component, ensuring the separation effect of waste oil. The observation component allows for intuitive observation of the internal separation process, making it convenient to use. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the isometric structure of this utility model;

[0013] Figure 3 This is a three-dimensional structural diagram of the rear of this utility model;

[0014] Figure 4 This is a front cross-sectional structural diagram of the present invention;

[0015] Figure 5 This is a schematic diagram of the left-side cross-sectional structure of this utility model;

[0016] The following are labels in the attached diagram: 1. Housing; 2. Inlet pipe; 3. Mounting bracket; 4. Filter screen; 5. Sealing plate; 6. Partition plate; 7. Drain pipe; 8. Speed ​​control valve; 9. Outlet pipe; 10. Rectangular block; 11. Guide rod; 12. Slider; 13. Threaded rod; 14. Moving block; 15. Vertical rod; 16. Scraper; 17. Sponge pad; 18. Drive box; 19. Gear; 20. Drive motor; 21. Oil drain pipe; 22. Manifold; 23. Oil outlet pipe; 24. Valve; 25. Observation window; 26. Rotating shaft; 27. Scraper; 28. Handle. Detailed Implementation

[0017] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0018] like Figures 1 to 5As shown, a water inlet pipe 2 is installed on the top left side of the housing 1. A partition 6 is installed inside the housing 1, dividing the interior into upper and lower chambers. The top of the partition 6 is inclined. A mounting bracket 3 is installed on the top of the upper chamber, located to the right of the output end of the water inlet pipe 2. A filter screen 4 is inserted into the left side wall of the housing 1, with its right end inside the mounting bracket 3. A sealing plate 5 is installed on the left end of the filter screen 4, sealing the left side wall of the housing 1. Multiple drain pipes 7 are installed on the right end of the partition 6, and speed control valves 8 are installed on the drain pipes 7. A water outlet pipe 9 is installed on the lower part of the left side wall, and the water outlet pipe 9 communicates with the lower chamber. Multiple rectangular blocks 10 and drain pipes 7 are alternately installed at the bottom of the partition plate 6. The bottom of the rectangular blocks 10 has a limiting groove. The threaded rod 13 is installed in the two middle limiting grooves. The movable block 14 is slidably installed in the limiting groove and screwed onto the outer wall of the threaded rod 13. A vertical rod 15 is installed at the bottom of the movable block 14. A scraper 16 is installed at the bottom of the vertical rod 15. A sponge pad 17 is installed at the bottom of the scraper 16. The drive box 18 is installed on the left side wall of the box 1. The threaded rod 13 A gear 19 is installed through the drive box 18 at the input end, and the two gears 19 mesh. The drive motor 20 is installed on the outer wall of the drive box 18, and the input end of the drive motor 20 is connected to the input end of the gear 19. Two guide rods 11 are installed in the limiting grooves of the rectangular blocks 10 on the front and rear sides. The slider 12 is slidably installed on the outer wall of the guide rods 11. The bottom of the slider 12 is connected to the top of the scraper 16 through the vertical rod 15. Two first oil drain ports are opened on the upper part of the left side wall of the box body 1, and are located on the upper side of the partition plate 6. A sponge pad 1 is opened on the lower part of the left side wall of the box body 1. 7. Two matching second oil drain ports are provided. Oil drain pipes 21 are installed at the first oil drain port and the second oil drain port respectively. Oil drain valves are provided on oil drain pipes 21. The output end of oil drain pipes 21 is connected to manifold 22. Oil outlet pipe 23 is connected to the rear side of manifold 22. Valve 24 is installed on oil outlet pipe 23. Two observation windows 25 are installed on the upper and lower sides of the right side wall of the housing 1, corresponding to the two chambers respectively. A rotating shaft 26 is rotatably installed on the upper part of the observation window 25. A scraper 27 is installed at one end of the rotating shaft 26 located in the chamber, and a handle 28 is installed at the other end.

[0019] Oily wastewater is added to the tank 1 through the inlet pipe 2. The wastewater is filtered through the filter screen 4 to remove impurities. The sealing plate 5 is removed to take out the filter screen 4 for easy maintenance and cleaning. The speed control valve 8 is slightly opened to allow the wastewater to flow slowly down through the drain pipe 7. As the wastewater flows down, the waste oil floats on top, allowing the water to flow out first. The drive motor 20 is started to drive the gear 19 to rotate. The gear 19 drives the threaded rod 13 to rotate, causing the moving block 14 to move within the limit groove. The vertical rod 15 drives the scraper 16 and the sponge pad 17 to move in parallel, scraping off the waste oil floating on top. Then the water is discharged through the outlet pipe 9. When the scraper 16 moves, it drives the slider 12 to move on the guide rod. 11. The outer wall and the limiting groove slide to limit and guide it, enhance the connection strength, and ensure the stability during movement. After the water in the upper chamber is drained, the waste oil will float on top. Open the drain valve and valve 24 of the upper drain pipe 21 to let the oil flow out through the oil outlet pipe 23. When the water in the lower chamber is lower than the second drain port, the upper part of the oil outlet will be full of waste oil. Open the drain valve and valve 24 of the lower drain pipe 21 to let the waste oil be discharged through the lower oil outlet pipe 23. The observation window 25 makes it easy to observe the sedimentation of waste oil in the chamber, which is convenient for control and improves the oil discharge effect. The handle 28 drives the rotating shaft 26 to rotate, so that the scraper 27 cleans the inner observation window 25 to ensure clear observation.

[0020] like Figures 1 to 5 As shown, this utility model discloses an oil-water separation and sedimentation device for oily wastewater. During operation, oily wastewater is added to the tank 1 through the inlet pipe 2. The wastewater is filtered through the filter screen 4 to remove impurities. The sealing plate 5 is removed to take out the filter screen 4 for easy maintenance and cleaning. The speed regulating valve 8 is slightly opened, allowing the wastewater to slowly flow downwards from the drain pipe 7. As the wastewater flows downwards, the waste oil floats on top, thus allowing the water to flow out first. After the water in the upper chamber has drained, the waste oil will float on top. The oil drain valve 21 and valve 24 are opened, allowing the oil to flow out through the oil outlet pipe 23. The drive motor 20 is started, driving the gear 19 to rotate. The gear 19 drives the threaded rod 13 to rotate, causing the moving block... 14 moves within the limiting groove, and the vertical rod 15 drives the scraper 16 and sponge pad 17 to move in parallel, which can scrape off the waste oil floating on the top. Then the water is discharged through the water outlet pipe 9. When the scraper 16 moves, it drives the slider 12 to slide on the outer wall of the guide rod 11 and within the limiting groove, which limits and guides it. When the water in the lower chamber is lower than the second oil outlet, the upper part of the oil outlet will be full of waste oil. Open the oil outlet valve and valve 24 of the lower oil outlet pipe 21 to discharge the waste oil through the lower oil outlet pipe 23. The handle 28 drives the rotating shaft 26 to rotate, so that the scraper 27 cleans the inner observation window 25. The observation window 25 makes it easy to observe the waste oil sedimentation in the chamber and facilitates control.

[0021] The inner walls of the chamber 1, the oil drain pipe 21, and the inner walls of the manifold 22 are all coated with an oleophobic coating. The filter screen 4, speed control valve 8, and drive motor 20 of the oil-containing wastewater separation and sedimentation device of this utility model are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0022] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An oil-water separation and sedimentation device for oily wastewater, characterized in that, It includes a housing (1), a water inlet pipe (2), a partition (6), a scraping component, an oil draining component, and an observation component. The water inlet pipe (2) is installed on the top left side of the housing (1). The partition (6) is installed inside the housing (1), dividing the interior of the housing (1) into upper and lower chambers. The top of the partition (6) is inclined. The scraping component is installed at the bottom of the partition (6). The oil draining component is installed on the right side wall of the housing (1), and the observation component is installed on the right side wall of the housing (1).

2. The oil-water separation and sedimentation device for oily wastewater as described in claim 1, characterized in that, It also includes a mounting bracket (3), a filter screen (4), a sealing plate (5), multiple drain pipes (7), multiple speed control valves (8), and a water outlet pipe (9). The mounting bracket (3) is installed on the top of the upper chamber, located to the right of the output end of the water inlet pipe (2). The filter screen (4) is inserted into the left side wall of the box body (1). The right end of the filter screen (4) is located inside the mounting bracket (3). The left end of the filter screen (4) is equipped with a sealing plate (5). The sealing plate (5) is sealed and installed on the left side wall of the box body (1). Multiple drain pipes (7) are installed on the right end of the partition (6). Speed ​​control valves (8) are installed on the drain pipes (7). The lower part of the left side wall of the box body (1) is equipped with a water outlet pipe (9). The water outlet pipe (9) is connected to the lower chamber.

3. The oil-water separation and sedimentation device for oily wastewater as described in claim 2, characterized in that, The oil scraping component includes multiple rectangular blocks (10), two threaded rods (13), two movable blocks (14), multiple vertical rods (15), a scraper (16), a sponge pad (17), a drive box (18), two gears (19), and a drive motor (20). The multiple rectangular blocks (10) and the drain pipe (7) are alternately installed at the bottom of the partition (6). The bottom of the rectangular blocks (10) is provided with a limiting groove. The threaded rods (13) are installed in the two middle limiting grooves. The movable blocks (14) are slidably installed in the limiting grooves and screwed into the threaded rods. On the outer wall of the threaded rod (13), a vertical rod (15) is installed at the bottom of the moving block (14), a scraper (16) is installed at the bottom of the vertical rod (15), a sponge pad (17) is installed at the bottom of the scraper (16), the drive box (18) is installed on the left side wall of the box body (1), the input end of the threaded rod (13) passes through the drive box (18) and a gear (19) is installed thereon, the two gears (19) mesh, the drive motor (20) is installed on the outer wall of the drive box (18), and the input end of the drive motor (20) is connected to the input end of the gear (19).

4. The oil-water separation and sedimentation device for oily wastewater as described in claim 3, characterized in that, It also includes two guide rods (11) and two sliders (12). The two guide rods (11) are installed in the limiting grooves of the rectangular blocks (10) on the front and rear sides. The sliders (12) are slidably installed on the outer wall of the guide rods (11). The bottom of the sliders (12) is connected to the top of the scraper (16) through the vertical rod (15).

5. The oil-water separation and sedimentation device for oily wastewater as described in claim 3, characterized in that, The oil draining component includes two sets of oil drain pipes (21), two manifolds (22), two oil outlet pipes (23), and two valves (24). Two first oil drain ports are opened on the upper part of the left side wall of the box (1) and are located on the upper side of the partition (6). Two second oil drain ports matching the sponge pad (17) are opened on the lower part of the left side wall of the box (1). The oil drain pipes (21) are respectively installed at the first oil drain port and the second oil drain port, and an oil drain valve is installed on the oil drain pipe (21). The output end of the oil drain pipe (21) is connected to the manifold (22). The rear side of the manifold (22) is connected to the oil outlet pipe (23), and a valve (24) is installed on the oil outlet pipe (23).

6. The oil-water separation and sedimentation device for oily wastewater as described in claim 2, characterized in that, The observation components include two observation windows (25), two rotating shafts (26), two scrapers (27) and two handles (28). The two observation windows (25) are installed on the upper and lower sides of the right side wall of the housing (1), corresponding to the two chambers respectively. The rotating shaft (26) is rotatably installed on the upper part of the observation window (25). The scraper (27) is installed at one end of the rotating shaft (26) inside the chamber, and the handle (28) is installed at the other end.

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