An oil-water collecting device of an oil separation tank facilitating filtration
By introducing a scraper structure and a threaded sealing cover design into the oil separator, the problem of clogging of the movable filter barrel is solved, and continuous and efficient operation of the filtration process is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI WEIRUI ENVIRONMENTAL PROTECTION ENG CO LTD
- Filing Date
- 2025-05-20
- Publication Date
- 2026-07-14
AI Technical Summary
During the collection process, solid matter tends to accumulate inside the movable filter barrel of existing underground grease traps, causing filter holes to become clogged, reducing filtration efficiency, requiring operation to be stopped for unclogging, and affecting overall efficiency.
The design incorporates a scraper structure to remove solids from the inner wall of the movable filter cartridge, and a threaded sealing cap facilitates the installation and removal of the movable filter cartridge, ensuring that the filter holes are not clogged and maintaining the continuity of filtration.
It effectively prevents the movable filter canister from clogging, ensures the normal operation of the filtration process, improves the overall efficiency of the collection process, and is simple and convenient to operate.
Smart Images

Figure CN224485164U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grease trap technology, and in particular to a grease trap oil-water collection device that is easy to filter. Background Technology
[0002] Oil separators are mainly used to treat oily industrial wastewater or catering wastewater. If this oily wastewater is discharged directly, it will pollute the environment. If the oil in the wastewater is recycled and reused, not only can the pollution of the environment be avoided, but it can also generate certain economic benefits.
[0003] A search revealed Chinese patent CN218231967U, which discloses an underground grease trap. The grease trap includes a main tank, an inlet pipe, and a drain pipe. The main tank is divided into an oil-water separation zone and a drainage zone by a partition plate. A filter assembly is connected to the outlet of the inlet pipe. A flow guide port connecting the oil-water separation zone and the drainage zone is located in the lower half of the partition plate. A filter mechanism is installed at the inlet of the flow guide port. The grease trap also includes a drainage pipe and an oil-water collection tank. A return pipe connects the bottom of the oil-water collection tank to the bottom of the oil-water separation zone. A collection trough is located at the top of the oil-water collection tank, and an oil discharge pump is installed inside the collection trough. An oil discharge pipe is connected to the outlet of the oil discharge pump. An oil layer stirring assembly is located in front of the collection trough. This underground grease trap achieves a high oil separation rate in wastewater treatment, with extremely low oil content in the separated water, thus improving oil recovery rates and effectively preventing environmental pollution.
[0004] The underground grease trap described in the aforementioned patent has the following drawbacks: As the collection process progresses, a significant amount of solid matter accumulates inside the movable filter barrel, and some of this solid matter adheres to the inner wall of the movable filter barrel, causing blockage of the filter holes. This reduces the efficiency of oily wastewater passing through the movable filter barrel and the main filter barrel, requiring the injection of oily wastewater to be stopped and the movable filter barrel to be removed for unblocking, which reduces the overall efficiency of the operation. Therefore, it is necessary to design a grease trap oil-water collection device that facilitates filtration to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an oil-water collection device for an oil separator that facilitates filtration.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] An oil-water collection device for an easy-to-filter grease trap includes an underground grease trap body. One end of the underground grease trap body has an inlet pipe. A main filter barrel is fixedly connected to the inner wall of the inlet pipe. A movable filter barrel is installed inside the main filter barrel. Circular holes are provided on the inlet pipe, the main filter barrel, and the movable filter barrel. Four positioning grooves are provided on the inner wall of the main filter barrel. Positioning plates are installed in each of the four positioning grooves. The four positioning plates are fixedly connected to the outer wall of the movable filter barrel. A first limiting sleeve is fixedly connected to the bottom inner wall of the movable filter barrel. A first rotating shaft is installed inside the first limiting sleeve. A baffle is fixedly connected to the top of the first rotating shaft. A semi-circular plate is provided on one side of the baffle. A second rotating shaft is fixedly connected to the top of the semi-circular plate. A rotating handle is fixedly connected to the top of the second rotating shaft. Six fixing rods are fixedly connected to the outer wall of the first rotating shaft. Three fixing rods form a group, and three fixing rods on the same side... All fixed rods are connected to the same scraper, which is slidably connected to the inner wall of the movable filter barrel. By using the scraper to remove solids from the inside of the movable filter barrel, the scraper removes solids adhering to the inner wall, preventing the filter holes from being covered and clogged. This allows oily wastewater to pass smoothly through the filter holes for filtration, effectively solving the problem mentioned in the background art where, as collection progresses, a large amount of solids accumulate inside the movable filter barrel, some of which adhere to the inner wall, causing clogging of the filter holes and reducing the efficiency of oily wastewater passing through the movable and main filter barrels. This necessitates stopping the injection of oily wastewater and removing the movable filter barrel for unclogging, thus reducing overall work efficiency. Therefore, this method achieves the technical effect of preventing clogging of the movable filter barrel, ensuring normal filtration, and providing simple operation and easy unclogging of the movable filter barrel, thus guaranteeing the overall efficiency of the collection work.
[0008] Preferably, a threaded ring is fixedly connected to the top of the movable filter barrel, and a sealing cap is fitted onto the threaded ring. The sealing cap is adapted to the threaded ring, and the sealing cap is threadedly connected to the threaded ring.
[0009] Preferably, a second limiting sleeve is fixedly connected to the top of the sealing cover, and the second limiting sleeve is sleeved on the second rotating shaft.
[0010] Preferably, the outer wall of the threaded ring is fixedly connected to two first locking blocks, and a second locking block is provided on the top of the first locking blocks. Each of the two second locking blocks is fitted with a sleeve at one end that is far apart from each other. Two round rods are threaded through the sleeves. The two round rods on the same side are fixedly connected to the same second locking block. A spring is fitted on the round rod and the spring is disposed inside the sleeve.
[0011] Preferably, the two round rods on the same side are fixedly connected to the same pull handle on the side away from the second locking block, and the round rods are slidably connected to the sleeve.
[0012] Preferably, an L-shaped rod is fixedly connected to the bottom of the sleeve, and both L-shaped rods are fixedly connected to the outer wall of the feed pipe.
[0013] Preferably, a water inlet pipe is provided inside the round hole on the feed pipe, and the water inlet pipe is fixedly connected to the feed pipe.
[0014] The beneficial effects of this utility model are as follows:
[0015] By employing a scraper to remove solids from the inside of the movable filter barrel, the scraper removes solids adhering to the inner wall of the barrel, preventing the filter holes from being covered and clogged. This allows oily wastewater to pass smoothly through the filter holes for filtration, effectively solving the problem mentioned in the background technology where, as collection progresses, a large amount of solids accumulate inside the movable filter barrel, some of which adhere to the inner wall, causing clogging of the filter holes and reducing the efficiency of oily wastewater passing through the movable and main filter barrels. This necessitates stopping the injection of oily wastewater and removing the movable filter barrel for unclogging, thus reducing overall work efficiency. The technology achieves the technical effect of preventing clogging of the movable filter barrel, ensuring normal filtration, and providing simple operation and easy unclogging of the movable filter barrel, thereby guaranteeing the overall efficiency of the collection process. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of an oil-water collection device for an oil separator that facilitates filtration, as proposed in this utility model.
[0017] Figure 2 A cross-sectional structural diagram of the feed pipe of an oil-water collection device for an oil separator that facilitates filtration, as proposed in this utility model.
[0018] Figure 3 This is a schematic diagram of the main filter barrel of an oil-water collection device for an oil separator that facilitates filtration, as proposed in this utility model.
[0019] Figure 4 A cross-sectional view of the main filter barrel of an oil-water collection device for an oil separator that facilitates filtration, as proposed in this utility model.
[0020] Figure 5 A cross-sectional structural diagram of the movable filter barrel of an oil-water collection device for an oil separator that facilitates filtration, as proposed in this utility model.
[0021] Figure 6A cross-sectional view of the sealed cover of an oil-water collection device for an oil separator that facilitates filtration, as proposed in this utility model.
[0022] Figure 7 This is a schematic diagram of the semi-circular plate of an oil-water collection device for an oil separator that facilitates filtration, as proposed in this utility model.
[0023] Figure 8 This is a schematic diagram of the casing structure of an oil-water collection device for an oil separator that facilitates filtration, as proposed in this utility model.
[0024] Figure 9 This is a cross-sectional view of the casing of an oil-water collection device for an oil separator that facilitates filtration, as proposed in this utility model.
[0025] In the diagram: 1. Buried grease trap body; 2. Feed pipe; 3. Main filter barrel; 4. Movable filter barrel; 5. Positioning groove; 6. Positioning plate; 7. First limiting sleeve; 8. First rotating shaft; 9. Baffle; 10. Semicircular plate; 11. Second rotating shaft; 12. Rotating handle; 13. Fixed rod; 14. Scraper; 15. Threaded ring; 16. Sealing cover; 17. Second limiting sleeve; 18. First locking block; 19. Second locking block; 20. Sleeve box; 21. Round rod; 22. Spring; 23. Pull handle; 24. L-shaped rod; 25. Water inlet pipe. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0027] Reference Figure 1-9An oil-water collection device for an easy-to-filter grease trap includes an underground grease trap body 1. An inlet pipe 2 is provided at one end of the underground grease trap body 1. A main filter barrel 3 is fixedly connected to the inner wall of the inlet pipe 2. A movable filter barrel 4 is provided inside the main filter barrel 3. Circular holes are provided on the inlet pipe 2, the main filter barrel 3, and the movable filter barrel 4. Four positioning grooves 5 are provided on the inner wall of the main filter barrel 3. Positioning plates 6 are provided in each of the four positioning grooves 5. The four positioning plates 6 are fixedly connected to the outer wall of the movable filter barrel 4. A first limiting sleeve 7 is fixedly connected to the bottom inner wall of the movable filter barrel 4. A first rotating shaft 8 is provided inside the first limiting sleeve 7. A baffle 9 is fixedly connected to the top of the first rotating shaft 8. A semi-circular plate 10 is provided on one side of the baffle 9. A second rotating shaft 11 is fixedly connected to the top of the semi-circular plate 10. A rotating handle 12 is fixedly connected to the top of the second rotating shaft 11. Six fixing rods 13 are fixedly connected to the outer wall of the first rotating shaft 8. Three fixing rods 13 form a group, with three on the same side... Each of the fixed rods 13 is fixedly connected to the same scraper 14. The scraper 14 is slidably connected to the inner wall of the movable filter barrel 4. Due to the use of the scraper to remove solids inside the movable filter barrel, the scraper removes the solids adhering to the inner wall of the movable filter barrel, preventing the filter holes from being covered and blocked. This allows oily wastewater to pass smoothly through the filter holes for filtration, effectively solving the problem mentioned in the background art where, as the collection work progresses, a large amount of solids accumulate inside the movable filter barrel, and some solids adhere to the inner wall of the movable filter barrel, causing blockage of the filter holes on the movable filter barrel. This reduces the efficiency of oily wastewater passing through the movable filter barrel and the main filter barrel, requiring the injection of oily wastewater to be stopped and the movable filter barrel to be removed for unblocking, which reduces the overall work efficiency. Thus, this technology achieves the technical effect of avoiding blockage of the movable filter barrel, ensuring normal filtration work, simple operation, easy unblocking of the movable filter barrel, and ensuring the overall efficiency of the collection work.
[0028] In this utility model, a threaded ring 15 is fixedly connected to the top of the movable filter barrel 4. A sealing cover 16 is fitted onto the threaded ring 15. The sealing cover 16 is adapted to the threaded ring 15 and is threadedly connected to the threaded ring 15.
[0029] In this utility model, a second limiting sleeve 17 is fixedly connected to the top of the sealing cover 16, and the second limiting sleeve 17 is sleeved on the second rotating shaft 11.
[0030] In this utility model, two first locking blocks 18 are fixedly connected to the outer wall of the threaded ring 15. A second locking block 19 is provided on the top of the first locking block 18. The second locking block 19 limits the first locking block 18, so that the movable filter barrel 4 can be restricted inside the main filter barrel 3. Each of the two second locking blocks 19 is fitted with a sleeve 20 at one end that is far away from each other. Two round rods 21 are passed through the sleeve 20. The two round rods 21 on the same side are fixedly connected to the same second locking block 19. A spring 22 is fitted on the round rod 21 and is set inside the sleeve 20.
[0031] In this utility model, the two round rods 21 on the same side are fixedly connected to the same pull handle 23 on the side away from the second locking block 19. By pulling the pull handle 23, the round rods 21 are moved, and the movement of the round rods 21 drives the second locking block 19 to move. The second locking block 19 is removed from the top of the first locking block 18, and the limit is released, the movable filter bucket 4 can be taken out, and the round rods 21 are slidably connected to the sleeve box 20.
[0032] In this utility model, an L-shaped rod 24 is fixedly connected to the bottom of the sleeve 20, and both L-shaped rods 24 are fixedly connected to the outer wall of the feed pipe 2.
[0033] In this utility model, a water inlet pipe 25 is provided in the round hole on the feed pipe 2. Oily wastewater enters the underground grease trap body 1 through the water inlet pipe 25. During this process, the oily wastewater is filtered through the main filter barrel 3 and the movable filter barrel 4 to filter out the oily solid waste. The water inlet pipe 25 is fixedly connected to the feed pipe 2.
[0034] Working principle: During use, oily wastewater is introduced into the feed pipe 2 through the inlet pipe 25. The oily wastewater is filtered through the main filter barrel 3 and the movable filter barrel 4, removing solids. The solids remain in the movable filter barrel 4. The filtered oily wastewater then enters the underground grease trap body 1 for collection. As collection progresses, a significant amount of solids accumulates inside the movable filter barrel 4, some of which adhere to the inner wall, causing blockage of the filter holes. At this point, the handle 12 can be turned. Turning the handle 12 will drive the second rotating shaft 11 to rotate. Shaft 11 drives the semicircular plate 10 to rotate, which in turn drives the baffle 9 to rotate. The baffle 9 then drives the first rotating shaft 8 to rotate, which in turn drives the fixed rod 13 to rotate in a circular motion. The fixed rod 13 then drives the scraper 14 to move along the inner wall of the movable filter barrel 4, scraping off the solids adhering to the inner wall of the movable filter barrel 4, allowing the oily wastewater to pass smoothly through the movable filter barrel 4 for filtration. When it is necessary to process the solids collected in the movable filter barrel 4, the two pull handles 23 can be pulled. Pulling the handles 23 will drive the round rod 21 to move, which in turn drives the second locking block 19 to move. The compression of spring 22 causes it to contract, moving the second locking block 19 away from the top of the first locking block 18, thus releasing the restriction on the first locking block 18. At this point, pulling the rotating handle 12 causes it to rise, which in turn raises the second rotating shaft 11. The second rotating shaft 11 then raises the second limiting sleeve 17, which in turn raises the sealing cover 16. The sealing cover 16 then raises the threaded ring 15, which in turn raises the movable filter barrel 4. The movable filter barrel 4 is then removed from the main filter barrel 3, and the sealing cover 16 is unscrewed from the threaded ring 15, allowing the contents of the movable filter barrel 4 to be adjusted. After processing the solid material, screw the sealing cap 16 onto the threaded ring 15 again, place the movable filter barrel 4 into the main filter barrel 3, align the positioning plate 6 with the positioning groove 5, place the positioning plate 6 into the positioning groove 5, press the sealing cap 16 to lower the movable filter barrel 4, so that the inclined surface of the first locking block 18 can press the inclined surface of the second locking block 19, so that the second locking block 19 can move into the sleeve box 20 again. When the first locking block 18 moves past the second locking block 19, the contracted spring 22 will extend, so that the second locking block 19 can block the top of the first locking block 18, and limit the movement again, thus completing the installation of the movable filter barrel 4.
[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. An oil-water collection device for an easy-to-filter grease trap, comprising an underground grease trap body (1), characterized in that, The buried grease trap body (1) is provided with a feed pipe (2) at one end. The inner wall of the feed pipe (2) is fixedly connected to a main filter barrel (3). The main filter barrel (3) is provided with a movable filter barrel (4). The feed pipe (2), the main filter barrel (3) and the movable filter barrel (4) are all provided with round holes. The inner wall of the main filter barrel (3) is provided with four positioning grooves (5). Each of the four positioning grooves (5) is provided with a positioning plate (6). The four positioning plates (6) are fixedly connected to the outer wall of the movable filter barrel (4). The bottom inner wall of the movable filter barrel (4) is fixedly connected with a first limiting sleeve (7). The sleeve (7) is provided with a first rotating shaft (8) inside. A baffle (9) is fixedly connected to the top of the first rotating shaft (8). A semi-circular plate (10) is provided on one side of the baffle (9). A second rotating shaft (11) is fixedly connected to the top of the semi-circular plate (10). A rotating handle (12) is fixedly connected to the top of the second rotating shaft (11). Six fixed rods (13) are fixedly connected to the outer wall of the first rotating shaft (8). Three fixed rods (13) form a group. The three fixed rods (13) on the same side are all fixedly connected to the same scraper (14). The scraper (14) is slidably connected to the inner wall of the movable filter barrel (4).
2. The grease trap oil-water collection device for easy filtration according to claim 1, characterized in that, The top of the movable filter barrel (4) is fixedly connected to a threaded ring (15), and a sealing cover (16) is fitted on the threaded ring (15). The sealing cover (16) is adapted to the threaded ring (15), and the sealing cover (16) is threadedly connected to the threaded ring (15).
3. The grease trap oil-water collection device for easy filtration according to claim 2, characterized in that, The top of the sealing cover (16) is fixedly connected to a second limiting sleeve (17), which is sleeved on the second rotating shaft (11).
4. The grease trap oil-water collection device for easy filtration according to claim 2, characterized in that, Two first locking blocks (18) are fixedly connected to the outer wall of the threaded ring (15). A second locking block (19) is provided on the top of the first locking block (18). Each of the two second locking blocks (19) is fitted with a sleeve (20) at one end away from each other. Two round rods (21) are threaded through the sleeve (20). The two round rods (21) on the same side are fixedly connected to the same second locking block (19). A spring (22) is fitted on the round rod (21). The spring (22) is set inside the sleeve (20).
5. The grease trap oil-water collection device for easy filtration according to claim 4, characterized in that, The two round rods (21) on the same side are fixedly connected to the same pull handle (23) on the side away from the second locking block (19), and the round rods (21) are slidably connected to the sleeve (20).
6. The grease trap oil-water collection device for easy filtration according to claim 5, characterized in that, The bottom of the sleeve (20) is fixedly connected to an L-shaped rod (24), and both L-shaped rods (24) are fixedly connected to the outer wall of the feed pipe (2).
7. The grease trap oil-water collection device for easy filtration according to claim 6, characterized in that, A water inlet pipe (25) is provided in the round hole on the feed pipe (2), and the water inlet pipe (25) is fixedly connected to the feed pipe (2).