Sewage treatment device for oil and gas development

Abstract

The invention discloses a sewage treatment device for oil and gas development, and belongs to the technical field of oil and gas sewage treatment.The sewage treatment device comprises a treatment box body, a liquid inlet is formed in the top face of a treatment box, a filtering mechanism is arranged on the side, close to the liquid inlet, in the treatment box body, and a separating mechanism is arranged below the filtering mechanism; the filtering mechanism comprises a filtering part slidably connected in the treatment box body, the filtering part is in transmission connection with a driving part, the driving part is fixedly connected to the top, away from the liquid inlet, in the treatment box body, the separating mechanism comprises a separating cylinder communicated with the filtering part, the bottom of the separating cylinder is communicated with a water outlet pipe, and the top surface of the separating cylinder is communicated with a first oil outlet pipe; the side, away from the water outlet pipe, of the bottom of the treatment box body communicates with a second oil outlet pipe which communicates with the first oil outlet pipe. The oil-water separator not only has efficient filtering and oil-water separating capabilities, but also has the characteristics of simplicity and convenience in operation and convenience in maintenance.

Description

Technical Field

[0001] The invention belongs to the technical field of oil and gas wastewater treatment, and in particular relates to a wastewater treatment device for oil and gas development. Background Art

[0002] In the process of oil and gas development, wastewater treatment is a crucial link. Since the wastewater produced by oil and gas extraction contains a large amount of impurities such as oil, suspended matter, dissolved organic matter and inorganic salts, if it is discharged directly without treatment, it will not only cause serious pollution to the environment, but also waste precious water resources. Therefore, it is particularly important to develop an efficient and stable wastewater treatment device for oil and gas development.

[0003] Traditional oil and gas development wastewater treatment devices mostly use simple physical filtration and chemical precipitation methods. Although they can remove some impurities in wastewater to a certain extent, the treatment effect is limited, especially for oil-water separation. In addition, traditional devices often have problems such as complex operation and difficult maintenance during operation, which limits their wide application in the field of oil and gas development. Summary of the invention

[0004] The purpose of the present invention is to provide a wastewater treatment device for oil and gas development to solve the problems existing in the above-mentioned prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following scheme: The present invention provides a wastewater treatment device for oil and gas development, comprising a treatment box body, a liquid inlet is provided on the top surface of the treatment box, a filtering mechanism is provided on the side of the treatment box body close to the liquid inlet, a separation mechanism is provided below the filtering mechanism, the filtering mechanism comprises a filtering part slidably connected to the treatment box body, the filtering part is transmission-connected to a driving part, the driving part is fixedly connected to the top of the treatment box body away from the liquid inlet, the separation mechanism comprises a separation cylinder connected to the filtering part, the bottom of the separation cylinder is connected to a water outlet pipe, the top surface of the separation cylinder is connected to a first oil outlet pipe, the bottom of the treatment box body is connected to a second oil outlet pipe on the side away from the water outlet pipe, and the first oil outlet pipe is connected to the second oil outlet pipe.

[0006] Preferably, the filter portion includes a filter frame slidably connected to the processing box body, a filter screen is provided in the filter frame, a connecting cone tube is slidably connected to the bottom of the filter frame, the connecting cone tube is fixedly connected to and communicated with the separation cylinder, a first connecting plate and a second connecting plate are respectively fixedly connected to the processing box body, the filter frame is slidably connected to the first connecting plate and the second connecting plate respectively, the connecting cone tube is located between the first connecting plate and the second connecting plate, a limiting member is provided between the first connecting plate and the filter frame, the driving portion is drivingly connected to the filter frame, and the driving portion is fixedly connected to the second connecting plate.

[0007] Preferably, the limiting member includes a first groove arranged on the top surface of the first connecting plate, the first groove is located on the side of the first connecting plate close to the filter frame, and a second groove is provided on the bottom surface of the filter frame close to the side of the first connecting plate, a limiting plate is slidably connected in the second groove, the limiting plate is adapted to the first groove, one end of the first spring is fixedly connected to the top surface of the second groove, the other end of the first spring is fixedly connected to the top surface of the second groove, and a lifting member is provided on the top surface of the limiting plate, and the lifting member is fixed in the second groove.

[0008] Preferably, the lifting member includes a connecting rope symmetrically fixed to the top surface of the limiting plate, the connecting rope is located on both sides of the first spring, the first motor is symmetrical on both sides of the top of the second groove, the output shaft of the first motor is fixed with a connecting roller, and a guide wheel is symmetrically installed in the second groove, the connecting rope passes through the guide wheel and is fixed to the connecting roller adjacent to it.

[0009] Preferably, the filter net is provided with a plurality of through holes, and the plurality of through holes are connected to the interior of the connecting cone tube.

[0010] Preferably, the driving part includes a second motor symmetrically fixed to the top surface of the second connecting plate, the second motor is located on the side of the second connecting plate away from the filter frame, the output shaft of the second motor is fixed with a screw, and the screw is threadedly connected to the side wall of the filter frame.

[0011] Preferably, a first opening is provided on the top surface of the processing box body, a third groove is provided in the first opening, a connecting cover is provided in the third groove, a handle is fixedly connected to the top surface of the connecting cover, and the connecting cover is located above the second connecting plate.

[0012] Preferably, a third connecting plate is fixedly connected to the inside of the processing box body, the third connecting plate is located below the second connecting plate, a second opening is provided between the third connecting plate and the second connecting plate, the separation cylinder comprises a cylinder body fixedly connected to the connecting cone tube, the bottom of the cylinder body is fixedly connected to and connected with a cone, a fourth connecting plate and a fifth connecting plate are respectively fixedly connected to the two sides of the bottom of the cylinder body, the fourth connecting plate is fixedly connected to the inner wall of the processing box body, the fifth connecting plate is fixedly connected to the third connecting plate, a guide plate is provided at the bottom of the inner part of the processing box body, the guide plate is connected to the water outlet pipe, and the guide plate is respectively fixedly connected to the inner wall of the processing box body and the side wall of the third connecting plate.

[0013] Preferably, the top surface of the cylinder is fixedly connected to the first oil outlet pipe, the first oil outlet pipe is fixedly connected to the top surface of the third connecting plate, and one end of the first oil outlet pipe away from the cylinder is located on a side of the third connecting plate away from the cylinder.

[0014] Preferably, a first valve is provided in the water outlet pipe, and a second valve is provided in the second oil outlet pipe.

[0015] The present invention discloses the following technical effects:

[0016] Sewage enters the treatment box body through the liquid inlet, and first passes through the filter mechanism near the liquid inlet for preliminary filtration to remove large particles of impurities. The filtered sewage continues to flow downward and enters the separation mechanism for oil-water separation. The separated water is discharged through the water outlet pipe, while the oil is collected through the first oil outlet pipe and the second oil outlet pipe. By integrating the filtering mechanism and the separation mechanism, effective treatment of sewage generated during oil and gas development is achieved. The filtering mechanism can remove impurities and particulate matter in the sewage, while the separation mechanism further separates the oil and water, thereby improving the treatment efficiency. The present invention not only has efficient filtering and oil-water separation capabilities, but also has the characteristics of simple operation and convenient maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 This is a schematic diagram of the external structure of the wastewater treatment device for oil and gas development of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of the wastewater treatment device for oil and gas development of the present invention;

[0020] Figure 3 For the present invention Figure 2 A partial enlarged view of middle A;

[0021] Figure 4 For the present invention Figure 2 A partial enlarged view of B.

[0022] In the figure: 1. treatment box body; 2. liquid inlet; 3. separation cylinder; 4. water outlet pipe; 5. first oil outlet pipe; 6. second oil outlet pipe; 7. filter frame; 8. filter screen; 9. connecting cone tube; 10. first connecting plate; 11. second connecting plate; 12. first groove; 13. second groove; 14. limit plate; 15. first spring; 16. connecting rope; 17. first motor; 18. connecting roller; 19. guide wheel; 20. through hole; 21. second motor; 22. lead screw; 23. first opening; 24. third groove; 25. connecting cover; 26. handle; 27. third connecting plate; 28. second opening; 29. ​​cylinder; 30. cone; 31. fourth connecting plate; 32. fifth connecting plate; 33. guide plate; 34. first valve; 35. second valve. DETAILED DESCRIPTION

[0023] As global energy demand continues to grow, the development of oil and gas resources is also increasing. However, the problem of wastewater generated during oil and gas development has become increasingly prominent, posing a serious threat to the environment and ecosystem. Therefore, the research and development and application of wastewater treatment equipment for oil and gas development is particularly important.

[0024] Oil and gas development wastewater mainly comes from various links such as oil and gas exploration, mining, processing and transportation. These wastewaters contain a large amount of pollutants such as organic matter, inorganic salts, heavy metals and radioactive substances, and have the characteristics of complex composition and great difficulty in treatment. If they are directly discharged without effective treatment, they will cause long-term harm to water bodies, soil and ecosystems. Therefore, the treatment of oil and gas development wastewater has become an indispensable part of the process of oil and gas resource development.

[0025] At present, the equipment and technologies for treating wastewater in oil and gas development mainly include physical treatment, chemical treatment, biological treatment and membrane separation technology, etc. These methods will be introduced in detail below.

[0026] 1. Physical treatment

[0027] Physical treatment mainly removes suspended matter, grease and other large particle pollutants in sewage by means of gravity sedimentation, centrifugal separation, filtration, etc. This method has the advantages of simple operation and low cost, but the treatment effect is limited and it is difficult to remove soluble pollutants and microorganisms.

[0028] Sedimentation method: Use gravity to separate suspended particles from water. This method is suitable for dealing with larger suspended particles, but it is not effective for small particles and suspended particles that are difficult to settle.

[0029] Centrifugal separation method: Separate suspended matter, grease, etc. from sewage through the action of centrifugal force. Centrifugal separation method has the advantages of high treatment efficiency and small footprint, but the equipment is complex and the energy consumption is high.

[0030] Filtration method: The suspended matter and particulate matter in the sewage are intercepted by filtering media (such as sand, activated carbon, etc.). The filtration method is suitable for treating sewage with high suspended matter content, but the filter media needs to be replaced regularly, which is costly.

[0031] 2. Chemical treatment

[0032] Chemical treatment mainly involves adding chemical agents to cause chemical reactions in the pollutants in the sewage, thereby converting them into non-toxic and harmless substances. This method is suitable for treating soluble pollutants and colloidal substances, but may produce secondary pollutants such as chemical sludge.

[0033] Neutralization method: adjust the pH value of sewage to neutral or near neutral by adding acidic and alkaline substances. Neutralization method is suitable for treating acidic or alkaline sewage, but it may consume a large amount of acidic and alkaline substances.

[0034] Coagulation and sedimentation method: By adding coagulants, the colloidal substances and tiny suspended solids in the sewage are condensed into larger particles, thereby achieving sedimentation and separation. Coagulation and sedimentation method is suitable for treating sewage with high suspended solids content and difficult to settle, but the selection and dosage of coagulants have a great influence on the treatment effect.

[0035] Redox method: by adding oxidants or reductants, pollutants in sewage undergo redox reactions, thereby converting them into non-toxic and harmless substances. Redox method is suitable for treating sewage containing pollutants such as heavy metals and organic matter, but it may produce toxic by-products.

[0036] Biological treatment mainly degrades organic matter in sewage into carbon dioxide, water and harmless substances through the metabolism of microorganisms. This method has the advantages of good treatment effect and environmental friendliness, but it occupies a large area and has a long treatment cycle.

[0037] Aerobic biological method: Under aerobic conditions, the metabolism of microorganisms is used to degrade organic matter into carbon dioxide and water. Aerobic biological method is suitable for treating wastewater with a high organic content, but it has high requirements for oxygen supply and temperature.

[0038] Anaerobic biological method: Under anaerobic conditions, anaerobic bacteria are used to degrade organic matter into methane and other products. The anaerobic biological method is suitable for treating sewage with high organic content and difficult to degrade, but the methane and other gases produced need to be properly handled.

[0039] Membrane separation technology is a highly efficient sewage treatment technology that separates suspended matter, dissolved matter and microorganisms from sewage through the action of microporous, ultrafiltration, nanofiltration and other membranes. Membrane separation technology has the advantages of good treatment effect, small footprint and simple operation, but the maintenance and replacement costs of membrane components are high.

[0040] Microfiltration (MF): The microporous membrane is used to intercept larger particles such as suspended solids and bacteria in sewage. Microfiltration is suitable for treating sewage with high suspended solids content, but the treatment effect is limited.

[0041] Ultrafiltration (UF): The ultrafiltration membrane is used to intercept smaller particles such as proteins and colloids in sewage. Ultrafiltration is suitable for treating sewage with a high organic content, but it may cause membrane pollution.

[0042] Nanofiltration (NF): The divalent ions and small molecular organic matter in sewage are intercepted by nanofiltration membrane. Nanofiltration is suitable for treating sewage containing pollutants such as heavy metals and organic matter, but the treatment cost is relatively high.

[0043] Reverse Osmosis (RO): Reverse osmosis membranes are used to intercept dissolved salts and organic matter in sewage. Reverse osmosis is suitable for treating sewage with high salinity and high organic content, but it consumes a lot of energy.

[0044] In order to cope with the limitations of traditional wastewater treatment technology, a number of new oil and gas development wastewater treatment devices and technologies have emerged in recent years. These technologies have the advantages of high treatment efficiency, environmental friendliness, and low operating costs, providing new solutions for the treatment of oil and gas development wastewater.

[0045] 1. Advanced oxidation technology

[0046] Advanced oxidation technology uses highly active oxidants (such as ozone, ultraviolet light / hydrogen peroxide, etc.) to degrade organic matter into harmless substances. This method has the advantages of good treatment effect and fast reaction speed, but the operating cost is relatively high.

[0047] Ozone oxidation method: The strong oxidizing property of ozone is used to degrade organic matter into carbon dioxide and water. Ozone oxidation method is suitable for treating wastewater with high organic content and difficult to degrade, but the preparation and transportation cost of ozone is high.

[0048] UV / Hydrogen peroxide oxidation method: Use the synergistic effect of UV and hydrogen peroxide to degrade organic matter into harmless substances. This method is suitable for treating wastewater containing difficult-to-degrade organic matter, but the equipment is complex and the energy consumption is high.

[0049] Electrochemical oxidation method: Degradation of organic matter into harmless substances through electrolysis. Electrochemical oxidation method is suitable for treating wastewater with low organic matter content and difficult to biodegrade, but the selection and replacement costs of electrode materials are high.

[0050] Biofilm technology fixes biofilm on solid carriers and uses biofilm to degrade organic matter. This method has the advantages of high treatment efficiency and strong adaptability to the environment, but the process is complicated and the biofilm needs to be replaced regularly.

[0051] Immobilized biofilm technology: fix microorganisms on a carrier to form a biofilm, and use the degradation effect of the biofilm to remove organic matter. Immobilized biofilm technology is suitable for treating sewage with high organic content and difficult to biodegrade, but the maintenance and replacement costs of the biofilm are high.

[0052] Moving Bed Biofilm Reactor (MBBR): Biofilm carriers are filled in the reactor and moved in the reactor by water flow, thereby improving the contact efficiency between the biofilm and sewage. MBBR is suitable for treating sewage with high organic content and high treatment efficiency, but the equipment is complex and the energy consumption is high.

[0053] New membrane technologies such as nanofiltration membranes and reverse osmosis membranes have higher separation efficiency and lower operating costs, providing new options for the treatment of oil and gas development wastewater.

[0054] Nanofiltration membrane: small organic molecules, heavy metal ions, etc. in sewage are intercepted by membranes with nanometer pore size. Nanofiltration membranes are suitable for treating sewage containing small organic molecules and heavy metal ions, but the preparation cost of membrane components is relatively high.

[0055] Reverse osmosis membrane technology: The reverse osmosis principle is used to intercept soluble salts and organic matter in sewage on one side of the membrane, thereby achieving sewage purification. Reverse osmosis membrane technology is suitable for treating sewage with high salinity and high organic content, but it consumes a lot of energy. In order to reduce energy consumption and improve treatment efficiency, a variety of improved reverse osmosis membrane technologies have emerged in recent years, such as low-pressure reverse osmosis membranes and electrically driven reverse osmosis membranes.

[0056] In order to give full play to the advantages of various sewage treatment technologies, a variety of combined processes have emerged in recent years. These processes combine physical treatment, chemical treatment, biological treatment, membrane separation technology and other methods to form an integrated sewage treatment system.

[0057] "Pretreatment + membrane treatment" combined process: First, pre-treat the sewage (such as coagulation sedimentation, filtration, etc.) to remove most of the suspended matter and particulate matter, and then use membrane treatment (such as ultrafiltration, nanofiltration or reverse osmosis) to further remove soluble pollutants and microorganisms. This combined process combines the advantages of physical treatment and membrane separation technology, improving sewage treatment efficiency and effluent water quality.

[0058] "Biological treatment + membrane bioreactor (MBR)" combined process: biological treatment is used to degrade organic matter, while MBR technology is combined to improve biological treatment efficiency and effluent water quality. MBR technology uses membrane components to intercept microorganisms, so that the biomass in the bioreactor is maintained at a high concentration, thereby improving the degradation rate and treatment efficiency of organic matter. This combined process is suitable for treating sewage with a high organic content and difficult to biodegrade.

[0059] With the development of the Internet of Things, big data and artificial intelligence technologies, intelligent monitoring and optimization technologies have been widely used in the field of wastewater treatment in oil and gas development. These technologies can realize intelligent monitoring and optimization of the wastewater treatment process by real-time monitoring of wastewater quality, treatment efficiency and equipment operation status.

[0060] Online water quality monitoring technology: Use sensors to monitor sewage water quality indicators (such as COD, BOD, ammonia nitrogen, total phosphorus, etc.) in real time to provide data support for the optimization of sewage treatment process. Online water quality monitoring technology has the advantages of real-time monitoring and accurate data, which helps to improve the efficiency of sewage treatment and effluent water quality.

[0061] Intelligent optimization algorithm: Use big data analysis and artificial intelligence algorithms to optimize the sewage treatment process. By analyzing historical data and real-time monitoring data, the intelligent optimization algorithm can automatically adjust the treatment parameters (such as dosage, aeration volume, etc.) to achieve the best sewage treatment process. This technology has the advantages of high automation and good optimization effect.

[0062] Remote monitoring and fault diagnosis technology: Use the Internet of Things technology to achieve remote monitoring and fault diagnosis of sewage treatment equipment. When the equipment fails, the system can automatically send an alarm message and indicate the cause of the failure, which helps to eliminate the fault in time and ensure the normal operation of the equipment.

[0063] With the increasing intensity of oil and gas development and increasingly stringent environmental protection requirements, oil and gas development wastewater treatment equipment and technology will face greater challenges and opportunities. In the future, oil and gas development wastewater treatment technology will develop in a more efficient, more environmentally friendly and more intelligent direction.

[0064] Efficient treatment technology: Research and develop more efficient and energy-saving sewage treatment technologies, such as new advanced oxidation technologies and bio-augmentation technologies, to improve sewage treatment efficiency and effluent quality.

[0065] Environmentally friendly treatment technology: Develop environmentally friendly treatment technology, such as using microorganisms to degrade organic matter and using solar energy to drive sewage treatment equipment, to reduce pollution and damage to the environment.

[0066] Intelligent monitoring system: Use the Internet of Things, big data and artificial intelligence technologies to build an intelligent monitoring system to achieve real-time monitoring and optimization of the sewage treatment process, and improve the degree of automation and intelligence of sewage treatment.

[0067] Resource utilization technology: Explore wastewater resource utilization technology, such as using treated wastewater for agricultural irrigation, industrial cooling, etc., to achieve wastewater resource utilization and energy conservation and emission reduction.

[0068] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0069] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0070] Reference Figure 1-Figure 4As shown, the present embodiment provides a wastewater treatment device for oil and gas development, comprising a treatment box body 1, a liquid inlet 2 being provided on the top surface of the treatment box, a filtering mechanism being provided on the side of the treatment box body 1 close to the liquid inlet 2, a separation mechanism being provided below the filtering mechanism, the filtering mechanism comprising a filtering portion slidably connected in the treatment box body 1, the filtering portion being transmission-connected with a driving portion, the driving portion being fixedly connected to the top of the treatment box body 1 away from the liquid inlet 2, the separation mechanism comprising a separation cylinder 3 connected with the filtering portion, the bottom of the separation cylinder 3 being connected with a water outlet pipe 4, the top surface of the separation cylinder 3 being connected with a first oil outlet pipe 5, the bottom of the treatment box body 1 being connected with a second oil outlet pipe 6 on the side away from the water outlet pipe 4, and the first oil outlet pipe 5 being connected with the second oil outlet pipe 6.

[0071] Sewage enters the treatment box body 1 through the liquid inlet 2, and first passes through the filter mechanism near the liquid inlet 2 for preliminary filtration to remove large particles of impurities. The filtered sewage continues to flow downward and enters the separation mechanism for oil-water separation. The separated water is discharged through the water outlet pipe 4, while the oil is collected through the first oil outlet pipe 5 and the second oil outlet pipe 6. By integrating the filtering mechanism and the separation mechanism, effective treatment of sewage generated during oil and gas development is achieved. The filtering mechanism can remove impurities and particulate matter in the sewage, while the separation mechanism further separates the oil and water, thereby improving the treatment efficiency.

[0072] A further optimized solution is provided, in which the filter portion comprises a filter frame 7 which is slidably connected to the treatment box body 1, a filter screen 8 is provided in the filter frame 7, a connecting cone tube 9 is slidably connected to the bottom of the filter frame 7, the connecting cone tube 9 is fixedly connected to and communicated with the separation cylinder 3, a first connecting plate 10 and a second connecting plate 11 are respectively fixedly connected to the treatment box body 1, the filter frame 7 is slidably connected to the first connecting plate 10 and the second connecting plate 11, the connecting cone tube 9 is located between the first connecting plate 10 and the second connecting plate 11, a limiting member is provided between the first connecting plate 10 and the filter frame 7, the driving portion is transmission-connected to the filter frame 7, and the driving portion is fixedly connected to the second connecting plate 11.

[0073] The filter unit is composed of a filter frame 7 and a filter screen 8. The filter frame 7 is slidably connected in the treatment box body 1 for easy cleaning and replacement. The connecting cone 9 is fixedly connected and connected to the separation cylinder 3 to ensure that the sewage can smoothly enter the separation mechanism. The limiter is arranged between the first connecting plate 10 and the filter frame 7 to prevent the filter frame 7 from excessive movement. The slidingly connected filter unit is convenient for cleaning and replacing the filter screen 8, which prolongs the service life of the device. The drive unit is driven by the screw 22 to achieve smooth movement of the filter unit and improve the convenience of operation.

[0074] A further optimized solution is provided, in which the limit member includes a first groove 12 arranged on the top surface of the first connecting plate 10, the first groove 12 is located on the side of the first connecting plate 10 close to the filter frame 7, and a second groove 13 is provided on the bottom surface of the filter frame 7 close to the first connecting plate 10, and a limit plate 14 is slidably connected in the second groove 13, the limit plate 14 is adapted to the first groove 12, one end of the first spring 15 is fixedly connected to the top surface of the limit plate 14, and the other end of the first spring 15 is fixedly connected to the top surface of the second groove 13, and a lifting member is provided on the top surface of the limit plate 14, and the lifting member is fixedly connected in the second groove 13.

[0075] A further optimized solution is that the lifting member includes a connecting rope 16 which is symmetrically fixed to the top surface of the limit plate 14, the connecting rope 16 is located on both sides of the first spring 15, and the first motor 17 is symmetrically provided on both sides of the top of the second groove 13, the output shaft of the first motor 17 is fixed with a connecting roller 18, and a guide wheel 19 is symmetrically installed in the second groove 13, the connecting rope 16 passes through the guide wheel 19 and is fixed to the connecting roller 18 adjacent to it.

[0076] The limiting member realizes automatic limiting of the filter frame 7 through the cooperation of the first spring 15 and the limiting plate 14 to prevent it from excessive movement. When the filter frame 7 needs to be moved, the lifting member pulls up the limiting plate 14 through the action of the connecting rope 16 and the connecting roller 18 to release the limiting, which facilitates the sliding and fixing of the filter frame 7. Automatic limiting and releasing of the filter frame 7 are realized, which improves the convenience and safety of operation.

[0077] In a further optimized solution, the filter screen 8 is provided with a plurality of through holes 20, and the plurality of through holes 20 are connected to the connecting cone tube 9. The plurality of through holes 20 on the filter screen 8 ensures the smooth passage of sewage, while effectively intercepting impurities and particulate matter. The design of the connecting cone tube 9 enables a seamless connection between the filter screen 8 and the separation cylinder 3, thereby avoiding leakage of sewage. Such a setting improves the filtering efficiency and ensures the smooth flow of sewage.

[0078] A further optimized solution is that the driving unit includes a second motor 21 symmetrically fixed to the top surface of the second connecting plate 11, the second motor 21 is located on the side of the second connecting plate 11 away from the filter frame 7, the output shaft of the second motor 21 is fixed with a screw 22, and the screw 22 is threadedly connected to the side wall of the filter frame 7.

[0079] The driving unit drives the lead screw 22 to rotate through the second motor 21, thereby driving the filter frame 7 to move. The lead screw 22 is threadedly connected to the side wall of the filter frame 7 to ensure that the filter frame 7 can move smoothly. Accurate control of the filter frame 7 is achieved, and the convenience and accuracy of operation are improved.

[0080] In a further optimized solution, a first opening 23 is provided on the top surface of the processing box body 1, a third groove 24 is provided in the first opening 23, a connecting cover 25 is provided in the third groove 24, a handle 26 is fixed to the top surface of the connecting cover 25, and the connecting cover 25 is located above the second connecting plate 11. The design of the first opening 23 and the third groove 24 facilitates opening and closing the processing box body 1, and facilitates maintenance and replacement of internal components. The design of the connecting cover 25 and the handle 26 improves the convenience and safety of operation.

[0081] A further optimized solution is provided, in which a third connecting plate 27 is fixedly connected inside the treatment box body 1, and the third connecting plate 27 is located below the second connecting plate 11, and a second opening 28 is provided between the third connecting plate 27 and the second connecting plate 11, and the separation cylinder 3 includes a cylinder body 29 fixedly connected to the connecting cone tube 9, and the bottom of the cylinder body 29 is fixedly connected and connected to a cone 30, and a fourth connecting plate 31 and a fifth connecting plate 32 are respectively fixedly connected to the two sides of the bottom of the cylinder body 29, and the fourth connecting plate 31 is fixedly connected to the inner wall of the treatment box body 1, and the fifth connecting plate 32 is fixedly connected to the third connecting plate 27, and a guide plate 33 is provided at the bottom of the treatment box body 1, and the guide plate 33 is connected to the water outlet pipe 4, and the guide plate 33 is respectively fixedly connected to the inner wall of the treatment box body 1 and the side wall of the third connecting plate 27.

[0082] The separation cylinder 3 is fixedly connected to the treatment box body 1 and the third connection plate 27 through the fourth connection plate 31 and the fifth connection plate 32, ensuring the stability and reliability of the structure. The design of the cone 30 helps to quickly separate the oil and water, and improves the separation efficiency. The guide plate 33 is provided so that the separated water can flow smoothly into the water outlet pipe 4, avoiding water retention and pollution.

[0083] In a further optimized solution, the top surface of the cylinder 29 is fixedly connected to the first oil outlet pipe 5, which is fixedly connected to the top surface of the third connecting plate 27, and one end of the first oil outlet pipe 5 away from the cylinder 29 is located on the side of the third connecting plate 27 away from the cylinder 29. This arrangement facilitates the collection and storage of oil.

[0084] To further optimize the solution, a first valve 34 is provided in the water outlet pipe 4, and a second valve 35 is provided in the second oil outlet pipe 6. This achieves accurate control of water flow and oil flow, improves the flexibility and practicality of the equipment, and also facilitates maintenance and cleaning of the equipment.

[0085] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0086] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A wastewater treatment device for oil and gas development, characterized in that: The invention comprises a treatment box body (1), wherein the top surface of the treatment box is provided with a liquid inlet (2), a filtering mechanism is provided on a side of the treatment box body (1) close to the liquid inlet (2), a separation mechanism is provided below the filtering mechanism, the filtering mechanism comprises a filtering part slidably connected to the treatment box body (1), the filtering part is transmission-connected to a driving part, the driving part is fixedly connected to the top of the treatment box body (1) away from the liquid inlet (2), the separation mechanism comprises a separation cylinder (3) connected to the filtering part, the bottom of the separation cylinder (3) is connected to a water outlet pipe (4), the top surface of the separation cylinder (3) is connected to a first oil outlet pipe (5), the bottom of the treatment box body (1) away from the water outlet pipe (4) is connected to a second oil outlet pipe (6), and the first oil outlet pipe (5) is connected to the second oil outlet pipe (6).

2. The wastewater treatment device for oil and gas development according to claim 1 is characterized by: The filter portion comprises a filter frame (7) slidably connected to the treatment box body (1), a filter screen (8) is arranged in the filter frame (7), a connecting cone tube (9) is slidably connected to the bottom of the filter frame (7), the connecting cone tube (9) is fixedly connected to and communicated with the separation cylinder (3), a first connecting plate (10) and a second connecting plate (11) are respectively fixedly connected in the treatment box body (1), the filter frame (7) is slidably connected to the first connecting plate (10) and the second connecting plate (11), the connecting cone tube (9) is located between the first connecting plate (10) and the second connecting plate (11), a limiting member is arranged between the first connecting plate (10) and the filter frame (7), the driving portion is drivingly connected to the filter frame (7), and the driving portion is fixedly connected to the second connecting plate (11).

3. The wastewater treatment device for oil and gas development according to claim 2 is characterized in that: The limiting member comprises a first groove (12) arranged on the top surface of the first connecting plate (10), the first groove (12) being located on a side of the first connecting plate (10) close to the filter frame (7), a second groove (13) being arranged on a bottom surface of the filter frame (7) close to the first connecting plate (10), a limiting plate (14) being slidably connected in the second groove (13), the limiting plate (14) being adapted to the first groove (12), one end of a first spring (15) being fixedly connected to the top surface of the limiting plate (14), the other end of the first spring (15) being fixedly connected to the top surface of the second groove (13), a lifting member being arranged on the top surface of the limiting plate (14), the lifting member being fixedly connected in the second groove (13).

4. The wastewater treatment device for oil and gas development according to claim 3 is characterized by: The lifting member includes a connecting rope (16) symmetrically fixed to the top surface of the limiting plate (14), the connecting rope (16) is located on both sides of the first spring (15), and the first motor (17) is symmetrically provided on both sides of the top of the second groove (13), the output shaft of the first motor (17) is fixed with a connecting roller (18), and a guide wheel (19) is symmetrically installed in the second groove (13), and the connecting rope (16) passes through the guide wheel (19) and is fixed to the connecting roller (18) adjacent to it.

5. The wastewater treatment device for oil and gas development according to claim 2 is characterized in that: The filter screen (8) is provided with a plurality of through holes (20), and the plurality of through holes (20) are connected to the interior of the connecting cone tube (9).

6. The wastewater treatment device for oil and gas development according to claim 2 is characterized by: The driving unit comprises a second motor (21) symmetrically fixed to the top surface of the second connecting plate (11), the second motor (21) being located on a side of the second connecting plate (11) away from the filter frame (7), the output shaft of the second motor (21) being fixedly connected to a lead screw (22), and the lead screw (22) being threadedly connected to a side wall of the filter frame (7).

7. The wastewater treatment device for oil and gas development according to claim 2 is characterized by: The top surface of the processing box body (1) is provided with a first opening (23), a third groove (24) is provided in the first opening (23), a connecting cover (25) is provided in the third groove (24), a handle (26) is fixedly connected to the top surface of the connecting cover (25), and the connecting cover (25) is located above the second connecting plate (11).

8. The wastewater treatment device for oil and gas development according to claim 2 is characterized by: A third connecting plate (27) is fixedly connected to the processing box body (1), and the third connecting plate (27) is located below the second connecting plate (11). A second opening (28) is provided between the third connecting plate (27) and the second connecting plate (11). The separation cylinder (3) comprises a cylinder body (29) fixedly connected to the connecting cone tube (9), and the bottom of the cylinder body (29) is fixedly connected to and communicated with a cone body (30). The bottom of the cylinder body (29) is respectively fixedly connected to two sides of the cylinder body (29). There are a fourth connecting plate (31) and a fifth connecting plate (32), the fourth connecting plate (31) is fixedly connected to the inner wall of the treatment box body (1), the fifth connecting plate (32) is fixedly connected to the third connecting plate (27), a guide plate (33) is provided at the bottom of the treatment box body (1), the guide plate (33) is connected to the water outlet pipe (4), and the guide plate (33) is respectively fixedly connected to the inner wall of the treatment box body (1) and the side wall of the third connecting plate (27).

9. The wastewater treatment device for oil and gas development according to claim 8, characterized in that: The top surface of the cylinder (29) is fixedly connected to the first oil outlet pipe (5), and the first oil outlet pipe (5) is fixedly connected to the top surface of the third connecting plate (27). An end of the first oil outlet pipe (5) away from the cylinder (29) is located on a side of the third connecting plate (27) away from the cylinder (29).

10. The wastewater treatment device for oil and gas development according to claim 1, characterized in that: The water outlet pipe (4) is provided with a first valve (34), and the second oil outlet pipe (6) is provided with a second valve (35).

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