A floating oil collection device for sewage lagoons

Abstract

The utility model discloses a sewage sedimentation tank floating oil collection device, including support connection subassembly and detachable connection on the support connection subassembly's oil inlet pipe subassembly, the support connection subassembly includes the connecting pipe, and the connecting pipe is evenly distributed with at least three supports along its periphery, the upper end of support is connected floating member, the oil inlet pipe subassembly includes the oil inlet pipe of the lower extreme can extend into the connecting pipe, and the upper end of oil inlet pipe is equipped with the funnel, the position of the upper end oil inlet of funnel is not higher than the upper end surface of floating member is at the position. Use the oil inlet pipe and adjust good position to be connected on the connecting pipe of support connection subassembly, and the whole floats on the water surface through the buoyancy of floating member, and the floating oil in sewage sedimentation tank enters the oil inlet pipe through the funnel, effectively improves the floating oil collection efficiency in sewage sedimentation tank, avoids the repeated transport of sewage, and reduces the transport cost.

Description

Technical Field

[0001] This utility model relates to the technical field of oilfield wastewater treatment equipment, specifically to a device for collecting floating oil in a wastewater settling tank. Background Technology

[0002] Wastewater settling tanks are the main hubs for collecting and reinjecting produced water from injection stations. Currently, the common production and operation mode for oilfields is as follows: produced fluid from individual wells is transported to a centralized heating point. After centralized heating and oil-water separation, the produced water is transported by vehicle or pipeline to the wastewater settling tank. After treatment measures such as settling, chemical dosing, and filtration, it is finally injected into the formation. During this process, a large amount of floating oil is generated in the wastewater settling tank, which over time occupies the tank space and affects settling time and water treatment efficiency.

[0003] The existing main method for collecting floating oil in sewage sedimentation tanks is to use a booster pump or a self-priming truck to pump oil. In the operation of pumping oil or using a self-priming truck, a rubber hose is directly inserted into the sewage sedimentation tank. Since it is difficult to determine the oil-water interface, if the rubber hose is inserted too shallowly, air can easily enter and no floating oil can be pumped out; if the rubber hose is inserted too deeply, it will enter the water interface and only water will be sucked out, causing the vehicle to refill the water tank repeatedly. Utility Model Content

[0004] In view of the existing technical problems, this utility model provides a floating oil collection device for sewage sedimentation tanks to solve the problems in the prior art.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution: An oil collection device for a sewage sedimentation tank includes a support connection assembly and an oil inlet pipe assembly detachably connected to the support connection assembly; The support connection assembly includes a connecting pipe with at least three supports evenly distributed along its circumference, and the upper end of the supports is connected to a floating component. The oil inlet pipe assembly includes an oil inlet pipe whose lower end can extend into the connecting pipe, and a funnel is provided at the upper end of the oil inlet pipe. The position of the oil inlet at the upper end of the funnel is not higher than the position of the upper surface of the float.

[0006] Preferably, the upper oil inlet of the funnel is provided with a filter screen, which covers the upper oil inlet of the funnel.

[0007] Preferably, the floating component is a rectangular ring structure formed by hollow tubes.

[0008] Preferably, the floating component is a ring-shaped structure formed by a hollow tube.

[0009] Preferably, the floating component is a float, and a float is connected to the upper end of each bracket.

[0010] Preferably, the floating component is a buoyancy tank, and a buoyancy tank is connected to the upper end of each bracket.

[0011] Preferably, a limiting adjustment assembly is provided between the oil inlet pipe and the connecting pipe. The limiting adjustment assembly includes a first screw hole on the connecting pipe and a plurality of second screw holes on the oil inlet pipe. The plurality of second screw holes are distributed along the axial direction of the oil inlet pipe on the pipe section near its lower end. In the assembled state, the first screw hole and the corresponding second screw hole are connected by fasteners.

[0012] Preferably, the maximum cross-sectional area of ​​the funnel is smaller than the cross-sectional area of ​​the region enclosed by the floating element.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: When using this utility model, the oil inlet pipe is connected to the connecting pipe of the supporting connecting assembly and the position is adjusted. The buoyancy generated by the floating component makes the whole thing float on the water surface. The floating oil in the sewage settling tank enters the oil inlet pipe through the funnel, which effectively improves the collection efficiency of floating oil in the sewage settling tank, avoids repeated sewage transfer, and reduces transfer costs. The overall structure is simple, and the assembly and disassembly are simple and quick. Attached Figure Description

[0014] Figure 1 This is a top view of Embodiment 1 of the present utility model; Figure 2 for Figure 1 Longitudinal sectional view in the middle; Figure 3 for Figure 1 A schematic diagram of the supporting connection components in the diagram; Figure 4 for Figure 1 A schematic diagram of the oil inlet pipe assembly in the middle; Figure 5 This is a top view of Embodiment 2 of the present invention; Figure 6 This is a top view of Embodiment 3 of the present invention; Figure 7 This is a top view of Embodiment 4 of the present invention. Detailed Implementation

[0015] The present invention will be further described in detail below with reference to experimental examples and specific embodiments. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present invention to the following embodiments. All technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0016] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] Example 1 As attached Figure 1 -Appendix Figure 4 The illustrated wastewater settling tank oil collection device includes a support connection assembly and an oil inlet pipe assembly detachably connected to the support connection assembly. Since wastewater is corrosive, both the support connection assembly and the oil inlet pipe assembly are made of 304 stainless steel.

[0018] The supporting connection assembly includes a connecting pipe 2, on which at least three supports 3 are evenly distributed along its circumference. In this embodiment, four supports 3 are provided. The upper end of each support 3 is connected to a float 1, which is located above the connecting pipe 2. The float 1 is a rectangular ring structure formed by hollow tubes. The lower ends of the four supports 3 are connected to the outer surface of the connecting pipe 2, and the upper ends of the four supports 3 are all connected to the float 1. The float 1 provides buoyancy, causing the oil collection device in the wastewater settling tank to float on the surface of the wastewater settling tank.

[0019] The oil inlet pipe assembly includes an oil inlet pipe 4 whose lower end can extend into the connecting pipe 2. The length of the connecting pipe 2 is less than the length of the oil inlet pipe 4. A funnel 5 is provided at the upper end of the oil inlet pipe 4. The position of the upper oil inlet of the funnel 5 is not higher than the position of the upper surface of the float 1. A filter screen 6 is provided at the upper oil inlet of the funnel 5. The filter screen 6 covers the upper oil inlet of the funnel 5 to prevent impurities from entering.

[0020] The maximum cross-sectional area of ​​the funnel 5 is smaller than the cross-sectional area of ​​the area enclosed by the floating component 1, so that the funnel 5 is located in the area enclosed by the floating component 1 when assembled.

[0021] A limiting adjustment assembly is provided between the oil inlet pipe 4 and the connecting pipe 2. The limiting adjustment assembly includes a first screw hole 21 on the connecting pipe 2 and multiple second screw holes 41 on the oil inlet pipe 4. The multiple second screw holes 41 are distributed along the axial direction of the oil inlet pipe 4 on the section of the oil inlet pipe 4 near its lower end. In the assembled state, the first screw hole 21 and the corresponding second screw hole 41 are connected by fasteners. This setting allows for flexible adjustment of the position of the oil inlet pipe 4 and the funnel 5 according to the oil-water interface depth, ensuring that the uppermost floating oil can always be drawn into the funnel 5. Specifically, the position of the upper oil inlet of the funnel 5 is adjusted according to the oil thickness in the settling tank. At this time, the fasteners are tightened into the first screw hole 21 and the corresponding second screw hole 41 for fixation.

[0022] Example 2 refer to Figure 5 In this embodiment, the floating component 1 is a ring-shaped structure formed by a hollow tube. The rest of the structure is the same as in the previous embodiment and will not be described again.

[0023] Example 3 refer to Figure 6 In this embodiment, the floating component 1 is a float. Each of the brackets 3 has a float connected to its upper end. When assembled, the funnel 5 is located in the area enclosed by the four floats. The rest of the structure is the same as that in Embodiment 1, and will not be described again.

[0024] Example 4 refer to Figure 7 In this embodiment, the floating component 1 is a buoyancy bucket. Each bracket 3 has a buoyancy bucket connected to its upper end. When assembled, the funnel 5 is located in the area enclosed by the four buoyancy buckets. The rest of the structure is the same as that in Embodiment 1, and will not be described again.

[0025] In use, connect the lower end of the connecting pipe 2 of the supporting connecting assembly to the self-priming vehicle or lift pump via the connecting hose. Adjust the position of the oil inlet at the upper end of the funnel 5 according to the oil thickness in the sedimentation tank. Then, connect the first screw hole 21 and the corresponding second screw hole 41 with fasteners to fix the connecting pipe 2 to the oil inlet pipe 4. Then start the oil pump. This invention improves the efficiency of oil collection in the sewage sedimentation tank, effectively increasing the utilization space of the sewage sedimentation tank; avoids repeated sewage transfer, reducing transfer costs; reduces the oil content of the sewage, reducing the dosage by 2%; effectively improves water quality and reduces manual labor.

[0026] The preferred embodiments of this utility model have been described above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A device for collecting floating oil in a sewage settling tank, characterized in that: Includes a support connection assembly and an oil inlet pipe assembly detachably connected to the support connection assembly; The support connection assembly includes a connecting pipe (2), on which at least three supports (3) are evenly distributed along its circumference, and the upper end of the supports (3) is connected to a floating component (1). The oil inlet pipe assembly includes an oil inlet pipe (4) whose lower end can extend into the connecting pipe (2). The upper end of the oil inlet pipe (4) is provided with a funnel (5). The position of the upper oil inlet of the funnel (5) is not higher than the position of the upper surface of the float (1).

2. The oil spill collection device for a sewage settling tank according to claim 1, characterized in that: The upper oil inlet of the funnel (5) is provided with a filter screen (6), which covers the upper oil inlet of the funnel (5).

3. The oil spill collection device for a sewage settling tank according to claim 2, characterized in that: The floating component (1) is a rectangular ring structure formed by a hollow tube.

4. The oil spill collection device for a sewage settling tank according to claim 2, characterized in that: The floating component (1) is a ring-shaped structure formed by a hollow tube.

5. The oil spill collection device for a sewage settling tank according to claim 2, characterized in that: The floating component (1) is a float, and a float is connected to the upper end of each of the brackets (3).

6. The oil spill collection device for a sewage settling tank according to claim 2, characterized in that: The floating component (1) is a buoyancy bucket, and each of the brackets (3) has a buoyancy bucket connected to its upper end.

7. A device for collecting floating oil in a wastewater settling tank according to any one of claims 2-6, characterized in that: A limiting adjustment assembly is provided between the oil inlet pipe (4) and the connecting pipe (2). The limiting adjustment assembly includes a first screw hole (21) on the connecting pipe (2) and a plurality of second screw holes (41) on the oil inlet pipe (4). The plurality of second screw holes (41) are distributed along the axial direction of the oil inlet pipe (4) on the pipe section near its lower end. In the assembled state, the first screw hole (21) and the corresponding second screw hole (41) are connected by fasteners.

8. The oil spill collection device for a sewage settling tank according to claim 2, characterized in that: The maximum cross-sectional area of ​​the funnel (5) is smaller than the cross-sectional area of ​​the area enclosed by the floating element (1).

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