Integrated oil separation grit chamber
By designing an integrated oil-separating and sand-setting tank and utilizing the density difference of oil, water and sand to separate them under the action of centrifugal force, the problems of complex equipment, large space and high cost in car wash wastewater treatment are solved, and efficient and stable separation of oil, water and sand is achieved.
Patent Information
- Application Number
- CN202423025258.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-12-09
AI Technical Summary
In the existing car wash wastewater treatment, the grease trap and grit chamber have complex structures, large footprint, high costs and long construction periods.
An integrated oil-separating and sand-setting tank is designed, which integrates the functions of oil removal and sand removal. It uses the density difference of oil, water and sand to separate them under the action of centrifugal force, and discharges them through different channels, adopting a simple and compact equipment structure.
It achieves efficient separation of oil, water and sand, reduces equipment complexity and floor space, shortens construction period and reduces costs, and does not require power equipment and moving parts, ensuring stable and reliable operation.
Smart Images
Figure CN223474478U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wastewater treatment technology, and in particular to an integrated oil-water separator and grit chamber. Background Technology
[0002] Car wash wastewater usually contains oil and sand. If discharged directly, it will cause some pollution to the surrounding environment. Therefore, car wash wastewater needs to be treated to remove oil and sand before being discharged.
[0003] Currently, the conventional method for removing oil and sand from car wash wastewater usually involves setting up a separate grease trap and a sedimentation tank. The grease trap is used for oil removal, and the sedimentation tank is used for sand removal. This method not only has a complex structure for the grease trap and sedimentation tank, but also occupies a large area, has a long construction period, and is costly. Utility Model Content
[0004] In response to the shortcomings of existing methods for removing oil and sand from car wash wastewater, the applicant provides a well-structured integrated oil-water separator and sand settling tank that is simple in structure, occupies a small area, has a short construction period, and is low in cost.
[0005] The technical solution adopted in this utility model is as follows:
[0006] An integrated oil-water separator and sedimentation tank includes an oil-water separator and sedimentation tank, which is equipped with an inlet pipe, an outlet pipe, and an oil outlet pipe. A sand outlet pipe is provided at the bottom of the oil-water separator and sedimentation tank. A central pipe is provided inside the oil-water separator and sedimentation tank, and the outlet pipe is connected to and communicates with the central pipe.
[0007] As a further improvement to the above technical solution:
[0008] The water inlet pipe is connected tangentially to the oil separator and sedimentation tank.
[0009] The upper end of the central tube is above the liquid surface.
[0010] An oil collection trough is provided on the oil outlet pipe, and a baffle is provided on one side of the oil collection trough.
[0011] The baffle rests against the outer wall of the central pipe; the oil collection tank is integrally formed on the oil outlet pipe by cutting off the upper half of the pipe wall on one side of the oil outlet pipe; the top of the oil collection tank is flush with or below the liquid surface.
[0012] The outlet pipe is positioned higher than the inlet pipe.
[0013] The oil-water separator and sedimentation tank is vertically arranged, consisting of an upper straight tank and a lower conical tank. The conical tank is wider at the top and narrower at the bottom. The larger diameter end of the conical tank is connected to the bottom of the straight tank. The water inlet pipe and water outlet pipe are horizontally arranged in the middle of the straight tank, and the oil outlet pipe is horizontally arranged in the upper part of the straight tank. The water outlet pipe is orthogonal to the water inlet pipe, and the oil outlet pipe is orthogonal to the water inlet pipe. The oil outlet pipe and water outlet pipe are located on opposite sides of the central pipe.
[0014] The angle α between the conical surface of the conical tank and the horizontal plane is ≥55°.
[0015] The height distance from the central axis of the inlet pipe to the liquid surface is H1≥600mm, the height distance from the central axis of the inlet pipe to the top of the conical tank is H2≥600mm; the height distance from the bottom of the central pipe to the top of the conical tank is H3=200~400mm; the height distance from the top of the central pipe to the liquid surface is H4≥200mm, and the height distance from the central axis of the outlet pipe to the central axis of the inlet pipe is H5=100~200mm.
[0016] The oil separator and sand settling tank is vertically supported by several legs.
[0017] The beneficial effects of this utility model are as follows:
[0018] This invention integrates oil and sand removal functions. Under centrifugal force, it utilizes the density difference between oil, water, and sand to achieve separation, and the substances are discharged through different channels, thus achieving the purpose of oil and sand removal. This invention achieves oil and sand removal simultaneously with a single device. The overall structure is simple and compact, occupies a small area, has a short construction period, and is low in cost. Furthermore, it requires no power equipment or moving parts, operates stably and reliably, and has high oil and sand separation efficiency. Attached Figure Description
[0019] Figure 1 This is a perspective view of the present invention. In the figure, the solid arrows indicate the separation direction of sand, and the dashed arrows indicate the separation direction of oil.
[0020] Figure 2 This is a plan view of the present invention.
[0021] Figure 3 This is a plan view of the oil outlet pipe.
[0022] Figure 4 for Figure 3 Cross-sectional view of section AA.
[0023] In the diagram: 1. Oil-water separator and sand settling tank; 11. Straight tank body; 12. Conical tank body; 13. Support leg; 2. Water inlet pipe; 3. Central pipe; 4. Water outlet pipe; 5. Oil outlet pipe; 51. Oil collection trough; 52. Baffle; 6. Sand outlet pipe; 10. Liquid level. Detailed Implementation
[0024] The specific embodiments of this utility model are described below with reference to the accompanying drawings.
[0025] like Figure 1 , Figure 2As shown, the integrated oil-water separator and sedimentation tank of this utility model includes an oil-water separator and sedimentation tank 1 that integrates oil removal and sedimentation functions. The oil-water separator and sedimentation tank 1 is vertically arranged and includes an upper straight tank body 11 and a lower conical tank body 12. The conical tank body 12 is larger at the top and smaller at the bottom, and the large-diameter end of the conical tank body 12 is connected to the bottom end of the straight tank body 11. Several legs 13 are vertically arranged on the oil-water separator and sedimentation tank 1 to support it.
[0026] A water inlet pipe 2 is horizontally installed in the middle of the straight tank 11. The water inlet pipe 2 is connected to the straight tank 11 tangentially, allowing water to enter tangentially. After entering the straight tank 11, the wastewater swirls along the wall. Under the action of centrifugal force, the sand in the wastewater is thrown onto the inner wall of the straight tank 11 and sinks down along the inner wall for separation, resulting in better sand separation. The height distance H1 from the central axis of the water inlet pipe 2 to the liquid surface 10 is ≥600mm. The water inlet pipe 2 is positioned relatively deep to reduce the disturbance of the liquid surface 10 caused by the incoming water, allowing the oil on the surface of the liquid surface 10 to smoothly enter the oil collection tank 51 of the oil outlet pipe 5, reducing the amount of water entering the oil collection tank 51. The height distance H2 from the central axis of the water inlet pipe 2 to the top of the conical tank 12 is ≥600mm. The water inlet pipe 2 is relatively far from the conical tank 12, which reduces the disturbance of the bottom caused by the incoming water, allowing the sand to settle better.
[0027] A central pipe 3 is vertically installed in the center of the straight tank 11. A water outlet pipe 4 is horizontally installed in the middle of the central pipe 3, connecting to the central pipe 3 and perpendicular to the water inlet pipe 2. The lower end of the central pipe 3 is lower than the water inlet pipe 2. The height distance H3 from the bottom of the central pipe 3 to the top of the conical tank 12 is 200-400mm. The central pipe 3 is at a certain distance from the conical tank 12 to prevent extremely fine sand from rising into the central pipe 3 and flowing out through the water outlet pipe 4. The upper end of the central pipe 3 is higher than the liquid surface 10. The height distance H4 between the top of the central pipe 3 and the liquid surface 10 is ≥200mm. The height H4 of the central pipe 3 above the liquid surface 10 is a protective height to prevent water from the liquid surface 10 from entering from the upper end of the central pipe 3. The central pipe 3 also serves to separate oil and sand, preventing oil and sand from entering the central pipe 3 and flowing out through the water outlet pipe 4. The position of the water outlet pipe 4 is higher than that of the water inlet pipe 2. The height distance H5 between the central axis of the water outlet pipe 4 and the central axis of the water inlet pipe 2 is 100-200mm. The water outlet position is higher than the water inlet position, which is more conducive to preventing sand from being discharged from the water outlet position.
[0028] An oil outlet pipe 5 is horizontally installed on the upper part of the straight tank body 11, corresponding to the liquid level 10. The oil outlet pipe 5 is orthogonal to the water inlet pipe 2, and the oil outlet pipe 5 and the water outlet pipe 4 are located on opposite sides of the central pipe 3. Figure 3 , Figure 4 As shown, an oil collection trough 51 is provided on the oil outlet pipe 5 at the part that extends into the straight tank body 11, and a baffle 52 is provided on one side of the oil collection trough 51, such as... Figure 2As shown, the baffle 52 rests against the outer wall of the central tube 3. The baffle 52 serves to prevent water from entering the oil collection tank 51 from the side. Figure 3 , Figure 4 As shown, in this embodiment, the oil collecting groove 51 is integrally formed on the oil outlet pipe 5, and is formed by cutting off the upper half of the pipe wall on one side of the oil outlet pipe 5. Figure 1 As shown, the top side of the oil collecting tank 51 is flush with or slightly lower than the liquid surface 10. This facilitates the entry of oil into the oil collecting tank 51 while preventing water from overflowing from the top of the oil collecting tank 51 into the oil collecting tank 51 and flowing out from the oil outlet pipe 5.
[0029] like Figure 1 As shown, a sand outlet pipe 6 is connected to the bottom of the conical tank 12. The angle α between the conical surface of the conical tank 12 and the horizontal plane is ≥55°, which facilitates the sand to slide down along the conical surface and improves the sand separation effect.
[0030] In actual use, the car wash wastewater containing oil and sand enters the straight tank 11 tangentially from the inlet pipe 2. The water flows in a swirling motion along the inner wall of the straight tank 11. Under the action of centrifugal force, the sand in the water is thrown to the inner wall of the straight tank 11 and sinks down to the conical tank 12. After settling in the conical tank 12, it is discharged through the sand outlet pipe 6. The oil in the water floats to the liquid surface 10, is collected by the oil collection tank 51, and is discharged from the oil outlet pipe 5. The clean water that has separated the oil and sand enters the pipe from the bottom of the central pipe 3 and is discharged from the water outlet pipe 4.
[0031] This invention integrates oil and sand removal functions. Under centrifugal force, it utilizes the density difference between oil, water, and sand to achieve separation, and the substances are discharged through different channels, thus achieving the purpose of oil and sand removal. This invention achieves oil and sand removal simultaneously with a single device. The overall structure is simple and compact, occupies a small area, has a short construction period, and is low in cost. Furthermore, it requires no power equipment or moving parts, operates stably and reliably, and has high oil and sand separation efficiency.
[0032] The above description is an explanation of the present utility model and not a limitation thereof. The present utility model can be modified in any form without departing from its spirit.
Claims
1. An integrated oil-water separator and grit chamber, characterized in that: It includes an oil-water separator and sand settling tank (1), which is equipped with an inlet pipe (2), an outlet pipe (4), and an oil outlet pipe (5). A sand outlet pipe (6) is installed at the bottom of the oil-water separator and sand settling tank (1). A central pipe (3) is installed inside the oil-water separator and sand settling tank (1), and the outlet pipe (4) is connected to the central pipe (3) and communicates with the central pipe (3).
2. The integrated oil-water separator and grit chamber according to claim 1, characterized in that: The water inlet pipe (2) is connected tangentially to the oil separator and sand settling tank (1).
3. The integrated oil-water separator and grit chamber according to claim 1, characterized in that: The upper end of the central tube (3) is above the liquid surface (10).
4. The integrated oil-water separator and grit chamber according to claim 1, characterized in that: An oil collection trough (51) is provided on the oil outlet pipe (5), and a baffle (52) is provided on one side of the oil collection trough (51).
5. The integrated oil-water separator and grit chamber according to claim 4, characterized in that: The baffle (52) rests against the outer wall of the central pipe (3); the oil collection tank (51) is integrally opened on the oil outlet pipe (5), and is formed by cutting off the upper half of the pipe wall on one side of the oil outlet pipe (5); the top side of the oil collection tank (51) is flush with or lower than the liquid surface (10).
6. The integrated oil-water separator and grit chamber according to claim 1, characterized in that: The position of the outlet pipe (4) is higher than the position of the inlet pipe (2).
7. The integrated oil-water separator and grit chamber according to claim 1, characterized in that: The oil-separating and sand-separating tank (1) is vertically arranged, including an upper straight tank body (11) and a lower conical tank body (12). The conical tank body (12) is larger at the top and smaller at the bottom. The large diameter end of the conical tank body (12) is connected to the bottom end of the straight tank body (11). The water inlet pipe (2) and the water outlet pipe (4) are horizontally arranged in the middle of the straight tank body (11), and the oil outlet pipe (5) is horizontally arranged in the upper part of the straight tank body (11). The water outlet pipe (4) is orthogonal to the water inlet pipe (2), and the oil outlet pipe (5) is orthogonal to the water inlet pipe (2). The oil outlet pipe (5) and the water outlet pipe (4) are located on opposite sides of the central pipe (3).
8. The integrated oil-water separator and grit chamber according to claim 6, characterized in that: The angle α between the conical surface of the conical tank (12) and the horizontal plane is ≥55°.
9. The integrated oil-water separator and grit chamber according to claim 1, characterized in that: The height distance H1 from the central axis of the inlet pipe (2) to the liquid surface (10) is ≥600mm, the height distance H2 from the central axis of the inlet pipe (2) to the top of the conical tank (12) is ≥600mm; the height distance H3 from the bottom of the central pipe (3) to the top of the conical tank (12) is 200~400mm; the height distance H4 from the top of the central pipe (3) to the liquid surface (10) is ≥200mm, and the height distance H5 from the central axis of the outlet pipe (4) to the central axis of the inlet pipe (2) is 100~200mm.
10. The integrated oil-water separator and grit chamber according to claim 1, characterized in that: The oil separator and sand settling tank (1) is vertically equipped with several support legs (13).