Self-cleaning type oil-water separating and filtering equipment for oilfield exploitation

Abstract

The utility model relates to self-cleaning type oil-water separating and filtering equipment for oil field exploitation, which comprises a separating box, a filter screen is mounted in the separating box, a mounting cover and a water tank are mounted on the upper portion of the separating box, a shaft tube penetrates among the separating box, the filter screen and the mounting cover through bearings, and a water storage disc is fixedly sleeved on the side wall of the lower end of the shaft tube. Multiple groups of stirring rods are installed on the lower portion of the water storage disc, multiple groups of water spraying pipes fixedly penetrate through the upper portion of the water storage disc, a threaded through hole is formed in the inner wall of the separation box, a threaded cover is arranged in the threaded through hole, and a water inlet pipe, a feeding pipe, an air inlet pipe and an air outlet pipe fixedly penetrate through the side wall of the separation box; the self-cleaning type oil-water separating and filtering equipment has the beneficial effects that the filter screen, the shaft tube and the water storage disc are adopted, and blockages in the filter screen structure can be flushed out through the filter screen, the shaft tube and the water storage disc, so that a guarantee is brought to cleaning of the filter screen structure of the self-cleaning type oil-water separating and filtering equipment for oil field exploitation.

Description

Technical Field

[0001] This utility model belongs to the field of oilfield development, specifically relating to a self-cleaning oil-water separation and filtration device for oilfield development. Background Technology

[0002] Oilfield wastewater typically refers to water containing various impurities and pollutants generated during oil extraction, gathering, transportation, and treatment. If oilfield wastewater is discharged directly without treatment, it will cause serious environmental pollution, such as contaminating soil, surface water, and groundwater, affecting the ecological balance, and endangering the survival of surrounding plants and animals. Currently, oil-water separation and filtration equipment is widely used to separate oil and water in oilfield wastewater. In practice, it has the advantages of simple operation, good separation effect, and stable use.

[0003] The prior art discloses an oilfield produced water treatment device with application number CN201922054708.6. In this utility model, the nozzle for spraying water is located above the filter screen structure. This flushing method cannot remove the blockage inside the filter screen structure, which poses a hidden danger to the cleaning of the filter screen structure of this utility model. At the same time, oil and water need to be separated inside the oil-water separator, but there is no airtightness detection structure. When there is a leak in the oil-water separator, oil and water will seep out from inside the oil-water separator, reducing the practicality of this utility model. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a self-cleaning oil-water separation and filtration device for oilfield development. It has the advantages of being able to flush out blockages inside the filter structure and having an airtightness detection structure that can detect in advance whether the oil-water separation tank is a sealed structure, thereby solving the problems mentioned in the background art.

[0005] This utility model provides a self-cleaning oil-water separation and filtration device for oilfield development, including a separation box. A filter screen is installed inside the separation box. An installation cover and a water tank are installed on the upper part of the separation box. A shaft tube passes through the separation box, filter screen, and installation cover via a bearing. A water storage tray is fixedly sleeved on the lower side wall of the shaft tube. Multiple sets of stirring rods are installed on the lower part of the water storage tray. Multiple sets of water spray pipes are fixedly inserted through the upper part of the water storage tray. A threaded through hole is formed in the inner wall of the separation box, and a threaded cap is installed inside the threaded through hole. The side wall of the separation box is fixedly... The separation tank is equipped with a water inlet pipe, a feed pipe, an air inlet pipe, and an air outlet pipe. A transparent air storage cylinder is fixedly sleeved on one end of the air outlet pipe. A water outlet pipe, two sets of oil drain pipes, and a sewage drain pipe are fixedly inserted through the lower end of the separation tank. A pump and a drive motor are installed on the upper part of the mounting cover. A main gear is fixedly sleeved on the output end of the drive motor. A driven gear is fixedly sleeved on the side wall of the shaft tube. A connecting pipe is snapped onto the output end of the pump, and one end of the connecting pipe is connected to the shaft tube through a bearing. A liquid extraction pipe is snapped onto the input end of the pump, and one end of the liquid extraction pipe is inserted into the interior of the water tank.

[0006] Preferably, an installation plate is installed inside the transparent air storage cylinder, and two sets of connecting rods slide through one side of the installation plate. A piston plate is installed at one end of each set of connecting rods, and a limit plate is installed at the other end of each set of connecting rods. Springs are sleeved on the side walls of each set of connecting rods. A threaded plug is installed in the internal threaded part of the opening of the transparent air storage cylinder, and a breathable mesh is fixedly inserted through one side of the threaded plug.

[0007] Preferably, the main gear and the driven gear mesh with each other.

[0008] Preferably, the threaded through hole and the threaded cap are threaded together.

[0009] Preferably, each of the multiple sets of water spray pipes is provided with a one-way valve on its sidewall.

[0010] Preferably, the side walls of the water inlet pipe and the feed pipe are each provided with a first control valve, the side walls of the air inlet pipe and the air outlet pipe are each provided with a second control valve, and the side walls of the water outlet pipe, the two sets of oil drain pipes and the sewage drain pipe are each provided with a third control valve.

[0011] Preferably, an electrical control box is installed on the side wall of the separation box, and a control panel is installed inside the electrical control box. The control panel is electrically connected to the pump and the drive motor via wires.

[0012] The beneficial effects of this utility model are as follows:

[0013] (1) This utility model adopts a filter screen, a shaft tube, and a water storage pan. In actual use, when the self-cleaning oil-water separation and filtration equipment is used in oilfields, the oilfield sewage can be discharged into the interior of the separation tank through the inlet pipe. At this time, the filter screen can filter the oilfield sewage. Then, the chemical catalyst can be put into the interior of the separation tank through the feed pipe. Then, the control panel is used to make the drive motor work. The output end of the drive motor can drive the main gear to rotate. Since the main gear and the driven gear mesh with each other, the rotating main gear can drive the driven gear to rotate. The rotating driven gear can drive the water storage pan to rotate through the shaft tube. The rotating water storage pan can stir the oil and water inside the separation tank through multiple sets of stirring rods. The oil and water and the chemical catalyst are mixed. This system enables rapid oil-water separation. Because water is denser than oil, the separated oil floats on the surface of the water. The water can be discharged through the outlet pipe, and the oil can be discharged through two sets of oil drain pipes. Impurities inside the separation tank can be discharged through the drain pipe. When the filter screen needs cleaning, the control panel is used to activate the pump. The water inside the tank enters the water storage pan through the suction pipe, connecting pipe, and shaft pipe. Finally, the water is sprayed out through multiple sets of spray pipes. The sprayed water can flush out the impurities clogging the filter screen. Through the filter screen, shaft pipe, and water storage pan, the blockage inside the filter screen structure can be flushed out, ensuring the cleaning of the filter screen structure of the self-cleaning oil-water separation filtration equipment used in oilfields.

[0014] (2) This utility model adopts an air inlet pipe, an air outlet pipe, and a transparent air storage cylinder. Before the actual use of the self-cleaning oil-water separation and filtration equipment in oilfields, one end of the air inlet pipe is connected to an external air pump. After the external air pump is powered on, air can enter the interior of the separation box through the air inlet pipe, and excess air can enter the interior of the transparent air storage cylinder through the air outlet pipe. At the same time, the air can push the piston plate, and the piston plate can move the limiting plate through two sets of connecting rods. During this process, the piston plate and the mounting plate will squeeze two sets of springs. When the limiting plate contacts the threaded plug, it closes the upper set of second control valves. When there is a leak inside the separation box, the two sets of springs can push the piston plate to reset due to their own elastic force. When there is no leak inside the separation box, the piston plate is fixed in position. The operator can judge whether there is a leak inside the separation box by observing the position of the piston plate. With the air inlet pipe, air outlet pipe, and transparent air storage cylinder, there is an airtightness detection structure, which can detect in advance whether the oil-water separation box is a sealed structure, thus improving the practicality of the self-cleaning oil-water separation and filtration equipment used in oilfields. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a self-cleaning oil-water separation and filtration device for oilfield development proposed in this utility model;

[0017] Figure 2 This is a perspective view of the piston plate proposed in this utility model;

[0018] Figure 3 This utility model proposes Figure 1 Enlarged view of A in the middle;

[0019] Figure 4 This utility model proposes Figure 1 Enlarged view of B in the middle;

[0020] Figure 5 This utility model proposes Figure 1 A magnified view of C.

[0021] Figure Labels

[0022] 1. Separation box; 2. Filter screen; 3. Shaft tube; 4. Water storage tray; 5. Stirring rod; 6. Water spray pipe; 7. Threaded through hole; 8. Threaded cap; 9. Water inlet pipe; 10. Feeding pipe; 11. Water outlet pipe; 12. Oil drain pipe; 13. Sewage drain pipe; 14. Air inlet pipe; 15. Air outlet pipe; 16. Transparent air storage cylinder; 17. Mounting cover; 18. Water tank; 19. Pump; 20. Drive motor; 21. Main gear; 22. Driven gear; 23. Connecting pipe; 24. Liquid extraction pipe; 25. Mounting plate; 26. Connecting rod; 27. Piston plate; 28. Limiting plate; 29. ​​Spring; 30. Threaded plug; 31. Ventilation screen. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] In the description of this application, it should be understood that the terms "upper", "lower", "inner", "outer", "top", "bottom", 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 application 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 application.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" or "several" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0027] According to an embodiment of the present invention, a self-cleaning oil-water separation and filtration device for oilfield development is provided.

[0028] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-5As shown, an oilfield self-cleaning oil-water separation and filtration device according to an embodiment of the present invention includes a separation box 1, a filter screen 2 installed inside the separation box 1, an installation cover 17 and a water tank 18 installed on the upper part of the separation box 1, a shaft tube 3 passing through the separation box 1, the filter screen 2 and the installation cover 17 via a bearing, and a water storage pan 4 fixedly sleeved on the lower side wall of the shaft tube 3, and multiple sets of stirring rods 5 installed on the lower part of the water storage pan 4, and multiple sets of water spray pipes 6 fixedly passing through the upper part of the water storage pan 4, a threaded through hole 7 opened in the inner wall of the separation box 1, and a threaded cover 8 provided inside the threaded through hole 7, and a water inlet pipe 9, a feed pipe 10, an air inlet pipe 14 and an air outlet pipe 15 fixedly passing through the side wall of the separation box 1, with one end of the air outlet pipe 15 fixedly sleeved on the side wall. A transparent air storage cylinder 16 is connected to the lower side wall of the separation box 1, through which a water outlet pipe 11, two sets of oil drain pipes 12 and a sewage drain pipe 13 are fixedly installed. A pump 19 and a drive motor 20 are installed on the upper part of the mounting cover 17. A main gear 21 is fixedly sleeved at the output end of the drive motor 20, and a driven gear 22 is fixedly sleeved at the side wall of the shaft tube 3. A connecting pipe 23 is snapped at the output end of the pump 19, and one end of the connecting pipe 23 is connected to the shaft tube 3 through a bearing. A liquid extraction pipe 24 is snapped at the input end of the pump 19, and one end of the liquid extraction pipe 24 is inserted into the interior of the water tank 18. Through the filter screen 2, shaft tube 3 and water storage pan 4, the blockage inside the filter screen structure can be flushed out, which provides a guarantee for the cleaning of the filter screen structure of the self-cleaning oil-water separation filtration equipment used in oilfield development.

[0029] In one embodiment, an installation plate 25 is installed inside the transparent air storage cylinder 16, and two sets of connecting rods 26 slide through one side of the installation plate 25. A piston plate 27 is installed at one end of the two sets of connecting rods 26, and a limit plate 28 is installed at the other end of the two sets of connecting rods 26. Springs 29 are sleeved on the side walls of the two sets of connecting rods 26. A threaded plug 30 is installed in the internal threaded part of the opening of the transparent air storage cylinder 16, and a breathable mesh 31 is fixedly inserted through one side of the threaded plug 30. Through the provided air inlet pipe 14, air outlet pipe 15 and transparent air storage cylinder 16, an airtightness detection structure is provided, which can detect in advance whether the oil-water separator 1 is a sealed structure, thereby improving the practicality of using self-cleaning oil-water separation and filtration equipment in oilfield development.

[0030] In one embodiment, the main gear 21 and the driven gear 22 mesh with each other, ensuring that the main gear 21 can drive the driven gear 22 to rotate.

[0031] In one embodiment, the threaded through hole 7 and the threaded cover 8 are threadedly engaged, facilitating the disassembly and assembly of the threaded cover 8.

[0032] In one embodiment, the sidewalls of the multiple sets of water spray pipes 6 are each equipped with a one-way valve. The multiple sets of one-way valves can prevent oil and water from entering the interior of the water storage pan 4 through the multiple sets of water spray pipes 6.

[0033] In one embodiment, the side walls of the water inlet pipe 9 and the feed pipe 10 are each provided with a first control valve, the side walls of the air inlet pipe 14 and the air outlet pipe 15 are each provided with a second control valve, and the side walls of the water outlet pipe 11, the two sets of oil drain pipes 12 and the sewage drain pipe 13 are each provided with a third control valve.

[0034] In one embodiment, an electrical control box is installed on the side wall of the separation box 1, and a control panel is installed inside the electrical control box. The control panel is electrically connected to the pump 19 and the drive motor 20 via wires. The control circuit of the control panel can be implemented by simple programming by those skilled in the art. It is common knowledge in the art and is only used without modification. Therefore, the control method and circuit connection will not be described in detail.

[0035] Working principle:

[0036] When using a self-cleaning oil-water separation and filtration device in actual oilfield operations, oilfield wastewater can be discharged into the separation tank 1 through the inlet pipe 9. At this time, the filter screen 2 can filter the oilfield wastewater. Then, the chemical catalyst can be added into the separation tank 1 through the feed pipe 10. Then, the control panel is used to make the drive motor 20 work. The output end of the drive motor 20 can drive the main gear 21 to rotate. Since the main gear 21 and the driven gear 22 mesh with each other, the rotating main gear 21 can drive the driven gear 22 to rotate. The rotating driven gear 22 can drive the water storage pan 4 to rotate through the shaft tube 3. The rotating water storage pan 4 can stir the inside of the separation tank 1 through multiple sets of stirring rods 5. The oil and water are mixed with a chemical catalyst to achieve rapid oil-water separation. Since water is denser than oil, the separated oil floats on the surface of the water. The water can be discharged through the outlet pipe 11, and the oil can be discharged through two sets of oil drain pipes 12. Impurities inside the separation tank 1 can be discharged through the drain pipe 13. When the filter screen 2 needs cleaning, the control panel is used to operate the pump 19. The water inside the water tank 18 enters the water storage pan 4 through the suction pipe 24, connecting pipe 23, and shaft pipe 3. Finally, the water is sprayed out through multiple sets of spray pipes 6, which flush out the impurities clogging the filter screen 2. The water then passes through the filter screen 2, shaft pipe 3, and... The water storage pan 4 can flush out blockages inside the filter screen structure, ensuring the cleaning of the filter screen structure of the self-cleaning oil-water separation filter equipment used in oilfield development. Before actually using the self-cleaning oil-water separation filter equipment in oilfield development, one end of the air inlet pipe 14 is connected to an external air pump. After the external air pump is powered on, air can enter the interior of the separation box 1 through the air inlet pipe 14. Excess air can enter the interior of the transparent air storage cylinder 16 through the air outlet pipe 15. Simultaneously, the air can push the piston plate 27, which can move the limiting plate 28 via two sets of connecting rods 26. During this process, the piston plate 27 and the mounting plate 25 will compress two sets of springs. 29. When the limit plate 28 contacts the threaded plug 30, the upper set of second control valves is closed. When there is a leak inside the separator 1, the two sets of springs 29 can push the piston plate 27 to reset due to their own elastic force. When there is no leak inside the separator 1, the position of the piston plate 27 is fixed. The operator can determine whether there is a leak inside the separator 1 by observing the position of the piston plate 27. Through the air inlet pipe 14, air outlet pipe 15 and transparent air storage cylinder 16, an airtightness detection structure is provided, which can detect in advance whether the oil-water separator 1 is a sealed structure, thus improving the practicality of using self-cleaning oil-water separation and filtration equipment in oilfield development.

[0037] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A self-cleaning oil-water separation and filtration device for oilfield development, characterized in that, The system includes a separation box (1), inside which a filter screen (2) is installed. A mounting cover (17) and a water tank (18) are installed on the upper part of the separation box (1). A shaft tube (3) passes through the separation box (1), filter screen (2), and mounting cover (17) via a bearing. A water storage tray (4) is fixedly sleeved on the lower side wall of the shaft tube (3). Multiple sets of stirring rods (5) are installed on the lower part of the water storage tray (4). Multiple sets of spray pipes (6) are fixedly passed through the upper part of the water storage tray (4). A threaded through hole (7) is opened on the inner wall of the separation box (1), and a threaded cap (8) is installed inside the threaded through hole (7). A water inlet pipe (9), a feeding pipe (10), an air inlet pipe (14), and an air outlet pipe (15) are fixedly passed through the side wall of the separation box (1). 15), a transparent air storage cylinder (16) is fixedly sleeved on one side wall of the air outlet pipe (15), and a water outlet pipe (11), two sets of oil drain pipes (12) and a sewage drain pipe (13) are fixedly passed through the lower side wall of the separation box (1). A pump (19) and a drive motor (20) are installed on the upper part of the mounting cover (17). A main gear (21) is fixedly sleeved on the output end of the drive motor (20). A driven gear (22) is fixedly sleeved on the side wall of the shaft tube (3). A connecting pipe (23) is snapped on the output end of the pump (19), and one end of the connecting pipe (23) is connected to the shaft tube (3) through a bearing. A liquid suction pipe (24) is snapped on the input end of the pump (19), and one end of the liquid suction pipe (24) is inserted into the interior of the water tank (18).

2. The self-cleaning oil-water separation and filtration equipment for oilfield development according to claim 1, characterized in that, The transparent gas storage cylinder (16) is equipped with an installation plate (25), and two sets of connecting rods (26) slide through one side of the installation plate (25). A piston plate (27) is installed at one end of the two sets of connecting rods (26), and a limit plate (28) is installed at the other end of the two sets of connecting rods (26). Springs (29) are sleeved on the side walls of the two sets of connecting rods (26). A threaded plug (30) is installed in the internal threaded part of the opening of the transparent gas storage cylinder (16), and a breathable mesh (31) is fixedly inserted through one side of the threaded plug (30).

3. The self-cleaning oil-water separation and filtration equipment for oilfield development according to claim 1, characterized in that, The main gear (21) meshes with the driven gear (22).

4. The self-cleaning oil-water separation and filtration equipment for oilfield development according to claim 1, characterized in that, The threaded through hole (7) and the threaded cover (8) are threadedly engaged.

5. The self-cleaning oil-water separation and filtration equipment for oilfield development according to claim 1, characterized in that, Each of the multiple sets of water spray pipes (6) is equipped with a one-way valve on its side wall.

6. The self-cleaning oil-water separation and filtration equipment for oilfield development according to claim 1, characterized in that, The side walls of the water inlet pipe (9) and the feed pipe (10) are each equipped with a first control valve, the side walls of the air inlet pipe (14) and the air outlet pipe (15) are each equipped with a second control valve, and the side walls of the water outlet pipe (11), the two sets of oil drain pipes (12) and the sewage drain pipe (13) are each equipped with a third control valve.

7. The self-cleaning oil-water separation and filtration equipment for oilfield development according to claim 1, characterized in that, An electrical control box is installed on the side wall of the separation box (1), and a control panel is installed inside the electrical control box. The control panel is electrically connected to the pump (19) and the drive motor (20) via wires.

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