Refinery wastewater treatment mechanism and treatment method

Abstract

The application belongs to the technical field of wastewater treatment, and particularly relates to a refinery wastewater treatment mechanism and a treatment method, which comprise a primary filtration shell, a primary filtration device installed on the primary filtration shell, and a secondary filtration device installed on the outer side of the primary filtration shell. The refinery wastewater treatment mechanism and the treatment method can perform secondary filtration and disinfection on the wastewater after primary filtration by arranging the secondary filtration device. The cooperation of the filter plate and the gas conveying pipeline can drive the deflection and lifting of the filter plate by lifting the gas conveying pipeline. After the deflection of the filter plate, the rotation driven by the rotating motor can fuse the impurities in the water with the bubbles containing ozone conveyed by the gas conveying pipeline, and accelerate the rising speed of the bubbles. When the filter plate is parallel to the secondary filtration shell, the filter plate can lift the floating dregs on the water surface after lifting, reduce the labor input, realize the integration of filtration and salvage, and solve the technical problem of the existing refinery wastewater treatment dregs cleaning which relies on manual operation.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, and in particular to an oil refinery wastewater treatment mechanism and a treatment method. Background Art

[0002] With the continuous development of society, sewage is directly discharged into natural water bodies, causing natural water bodies to be polluted, especially in oil refining and processing enterprises, which consume a lot of water and discharge a lot of sewage.

[0003] Existing wastewater treatment for oil refineries usually uses filter components to filter wastewater. First, the filter media lacks a self-cleaning mechanism for retaining impurities. Traditional filter units (such as multi-media filters and activated carbon filters) retain suspended matter, oils and colloidal substances through the pores of the filter media. However, impurities easily form a dense filter cake on the surface of the filter layer, resulting in a sharp increase in the filtration pressure difference and a decrease in flux. Secondly, there is no continuous slag discharge design, and the filter does not integrate mechanical scraping or negative pressure suction devices. The retained impurities accumulate in the gaps between the filter media, resulting in a reduction in the effective filtration area, an increase in the backwash frequency, and increased filter media wear and replacement costs. Finally, due to defects in the microbubble-scum interface control technology, scum cleaning relies on manual operation. Summary of the Invention

[0004] Based on the technical problems that the existing refinery wastewater treatment filter material has impurities that are retained but lacks a self-cleaning mechanism, has no continuous slag discharge design, and slag cleaning relies on manual operation, the present invention proposes a refinery wastewater treatment mechanism and treatment method.

[0005] The invention provides an oil refinery wastewater treatment mechanism, which comprises a primary filter housing, a primary filter device installed on the primary filter housing, and a secondary filter device installed outside the primary filter housing.

[0006] The primary filter device is located on the upper surface of the primary filter housing and filters the wastewater that needs to be filtered. The primary filter device includes a primary filter mechanism and a recovery mechanism. The primary filter mechanism filters impurities and waste oil from the transported wastewater, and the recovery mechanism recovers the filtered impurities and waste oil.

[0007] The re-filtration device is located outside the primary filter housing and performs secondary filtration on the wastewater filtered by the primary filter device. The re-filtration device includes a re-filtration housing with a water outlet pipe and a re-filtration mechanism. The re-filtration mechanism filters the wastewater in the re-filtration housing again.

[0008] Preferably, the primary filtration mechanism includes an annular support frame, which is fixedly mounted on the outer surface of the primary filtration housing; a conveying bucket with a water inlet pipe is fixedly mounted on the upper surface of the annular support frame; and Venturi baffles distributed in an annular array are fixedly mounted on the inner wall of the conveying bucket.

[0009] Through the above technical solution, in order to divert the transported wastewater and crush the impurities in the wastewater, the special shape of the Venturi baffle can make the transported wastewater impact during flow, preventing impurities from sticking to the Venturi baffle.

[0010] Preferably, the inner wall of the annular support frame is rotatably connected to an impurity filter bucket with a gear ring, and the inner wall of the annular support frame is rotatably connected to a waste oil filter bucket with a gear ring, and the waste oil filter bucket is located outside the impurity filter bucket.

[0011] Through the above technical solution, the impurity filter bucket and the waste oil filter bucket are bucket-shaped, which is convenient for increasing the filtering area. The rotation of the impurity filter bucket and the waste oil filter bucket can drive the wastewater to be centrifuged, which is convenient for rapid dehydration.

[0012] The transmission mechanism further comprises a through-hole, a through-hole, a screw thread connecting the end of the through-hole, and a screw thread connecting the end of the through-hole, wherein the through-hole is connected to the filter pocket.

[0013] Through the above technical solution, the collected impurities are spirally conveyed by the spiral pressing component, the moisture in the impurities is squeezed out and then conveyed through the drainage pipe in the spiral pressing component, and the impurities are conveyed through the discharge port for easy separation and recovery. The two drive motors can respectively drive the rotation of the impurity filter bucket, the waste oil filter bucket and the scraper, and the annular support frame supports the impurity filter bucket, the waste oil filter bucket and the scraper.

[0014] Preferably, an air storage chamber is provided inside the impurity conveying pipe, and a pushing piston ring is slidably inserted inside the air storage chamber, and the upper end of the pushing piston ring passes through the upper surface of the impurity conveying pipe and is fixedly installed with a sealing plug, the outer surface of the sealing plug is slidably inserted into the inner wall of the impurity conveying pipe, and a sealing air bag is fixedly installed on the outer surface of the impurity conveying pipe, and the outer surface of the sealing air bag is fixedly connected to the inner wall of the air storage chamber through a conveying pipe, and the sealing air bag seals the waste oil conveying pipe after being inflated, and a control motor is fixedly installed inside the conveying bucket, and the inner wall of the conveying bucket is rotatably connected to a lifting gear with a threaded groove through a bearing, and the inner wall of the lifting gear is threadedly connected to a lifting rod, one end of the lifting rod is slidably inserted into the lower surface of the conveying bucket, and one end of the lifting rod is fixedly installed on the upper surface of the sealing plug, and one end of the output shaft of the control motor is meshed with the lifting gear through a gear.

[0015] Through the above technical solution, one end of the impurity conveying pipeline can be sealed by raising and lowering the sealing plug, thereby preventing wastewater from flowing out through the impurity conveying pipeline during use of the impurity filter bucket. The raising and lowering of the sealing plug can drive the piston ring to rise and fall, pushing the gas in the air storage chamber, causing the sealing airbag to expand or contract. The expansion of the sealing airbag can seal the waste oil conveying pipeline, thereby preventing wastewater from flowing out through the waste oil conveying pipeline.

[0016] Preferably, the secondary filter housing is arranged on the outer side of the primary filter housing, and a water pump is fixedly installed on the water outlet end of the primary filter housing through a connecting pipe, and the water outlet end of the water pump is fixedly connected to the water inlet end of the secondary filter housing through a connecting pipe.

[0017] Through the above technical solution, the wastewater filtered in the primary filter housing can be transported into the secondary filter housing by suction of the water pump.

[0018] Preferably, the re-filtration mechanism includes a cleaning tank, which is fixedly mounted on the outer surface of the re-filtration shell, and a moving part is fixedly mounted on the upper surface of the cleaning tank, and the outer surface of the screw rod of the moving part is threadedly connected to the moving frame, and the outer surface of the moving frame is slidingly plugged into the guide rail of the moving part, and the outer surface of the moving frame is rotatably connected to the rotating gear ring through a bearing seat, and a rotating motor is fixedly mounted on the upper surface of the moving frame, and one end of the output shaft of the rotating motor is meshed with the rotating gear ring through a gear, and an air pipeline with a gear ring is slidably plugged into the inner wall of the rotating gear ring, and a lifting motor is fixedly mounted on the outer surface of the moving frame, and one end of the output shaft of the lifting motor is meshed with the gear ring of the gas pipeline through a gear.

[0019] Through the above technical solution, the moving parts can drive the moving frame to move horizontally, the rotating motor drives the rotating gear ring to rotate through the gear, thereby driving the gas pipeline to rotate, and the lifting motor drives the gas pipeline with the gear ring to lift and lower through the gear.

[0020] The top of described filter housing is hinged on the outer surface of filter housing, and the bottom surface of filter housing is hinged on the outer surface of filter housing, and one end of filter housing is hinged on the outer surface of filter housing, and one end of filter housing is hinged on the outer surface of filter housing.

[0021] Through the above technical solution, the lifting ring can be limited by the connecting ring on the gas pipeline to prevent the lifting ring from being separated from the gas pipeline. The water in the re-filtration shell can be stirred by deflecting the hinged filter plate, so that fine impurities can combine with tiny bubbles more quickly. The lifting and lowering of the gas pipeline drives the deflection rack to lift and lower, thereby driving the rotation of the deflection gear and driving the filter plate to deflect. The deflection of one filter plate drives the support ring to rotate through the deflection connecting rod, thereby driving the filter plates distributed in a ring array to deflect synchronously. The filter plates are in a parallel state and can salvage the foam containing impurities above. The sealing elastic membrane seals both ends of the gas pipeline.

[0022] Preferably, an ozone generator is fixedly mounted on the outer surface of the frame of the movable component, an aerator is fixedly mounted on the outer surface of the frame of the movable component, the air outlet end of the ozone generator is fixedly connected to the air inlet end of the aerator through a connecting pipe, a delivery hose is fixedly mounted on the air outlet end of the aerator, one end of the delivery hose is fixedly mounted to one end of the gas pipeline through a rotary joint, a cleaning nozzle is fixedly mounted on the upper surface of the cleaning tank, one end of the cleaning nozzle is fixedly connected to a water tank containing cleaning liquid through a suction pump.

[0023] Through the above technical solution, the combination of the ozone generator and the aerator can deliver tiny bubbles containing ozone into the water to complete the disinfection of the water and remove impurities. The inclined liquid delivered by the cleaning nozzle can be used to flush the foam salvaged on the filter plate.

[0024] The present invention provides a method for treating refinery wastewater, comprising the following steps:

[0025] S1: The water inlet pipe on the wastewater conveying bucket is transported into the conveying bucket, and the transported wastewater can be diverted by the Venturi partition in the conveying bucket. The water flows along the trajectory of the Venturi partition, and the water flows impact each other to prevent impurities in the wastewater from adhering to the Venturi partition. The wastewater enters the impurity filter bucket, and the impurity filter bucket is driven by the start of the drive motor to rotate on the annular support frame, centrifuging the transported wastewater, so that the water and waste oil in the wastewater are thrown out into the waste oil filter bucket. The waste oil filter bucket rotates as driven by the drive motor, and the water in the waste oil is thrown out. The filtered water enters the primary filter shell.

[0026] S2: When it is necessary to clean the impurities and waste oil collected in the impurity filter bucket and the waste oil filter bucket, the control motor in the conveying bucket is started, and the gear of the control motor drives the lifting gear to rotate, and the lifting gear drives the lifting rod threadedly connected thereto to rise. After the lifting rod drives the sealing plug to rise, the sealing plug leaves the impurity conveying pipeline, and at the same time, the sealing plug drives the pushing piston ring in the air storage chamber to rise, and the gas below the air storage chamber is sucked, so that after the gas in the sealing airbag is sucked, the sealing airbag shrinks, and the seal on the waste oil conveying pipeline is released.

[0027] S3: Another driving motor drives the scraper on the annular support frame to rotate, and the scraper scrapes the inner walls of the impurity filter bucket and the waste oil filter bucket, so that the scraped impurities and waste oil enter the impurity conveying pipe and the waste oil conveying pipe. The impurities in the impurity conveying pipe enter the screw pressing component, and the screw pressing component rotates to remove moisture from the impurities containing water. The waste oil can be collected through the oil outlet of the waste oil conveying pipe.

[0028] S4: After the moving parts on the cleaning tank are started, they drive the moving frame to move. After the moving frame drives the gas pipeline to move to the top of the re-filtration housing, it is started by the lifting motor. After the gear on the lifting motor drives the gas pipeline to descend, the support ring enters the re-filtration housing. After the pillar on the support ring contacts the inner bottom wall of the re-filtration housing, the support ring is limited. After the gas pipeline continues to descend on the lifting ring, the deflection rack on the gas pipeline drives the deflection gear on the filter plate to rotate, and the deflection gear drives the filter plate to rotate. The rotation of the filter plate is deflected by the deflection connecting rod. The deflection connecting rod drives the transfer ring to rotate and then drives the remaining filter plates to deflect. After the filter plate deflects, the water pump starts to suck the water in the primary filter housing into the re-filtration housing.

[0029] S5: After the ozone generator is started, the generated ozone enters the aerator to generate nanobubbles, which enter the gas pipeline through the delivery hose and then enter the water through the gas pipeline. The bacteria and impurities in the water are removed by the nanobubbles and ozone. At the same time, the nanobubbles wrap the impurities and transport them to the surface of the water, which is convenient for removing tiny impurities. After the rotary motor is started, it drives the rotating gear ring to rotate, and the rotating gear ring drives the gas pipeline to rotate. The gas pipeline drives the lifting ring that is slidably connected to it to rotate, and the lifting ring drives the filter plate to rotate, which rotates the water in the re-filtration shell, making it convenient for the bubbles to wrap the impurities.

[0030] S6: After the disinfection is completed, the gas pipeline rises and drives the deflection rack to rise. The deflection rack drives the filter plate to reset through the deflection gear. After the gas pipeline rises, it drives the lifting ring to rise, and drives the support ring to rise. The reset filter plate salvages impurities on the water surface. The moving part drives the filter plate to move to the top of the cleaning tank. After the gas pipeline descends, the lower surface support of the support ring contacts the inner wall of the cleaning tank, and the filter plate is deflected. After the cleaning nozzle sprays the cleaning liquid on the filter plate, the support ring and the gas pipeline, the gas pipeline drives the filter plate to rotate to fully rinse the impurities on the filter plate.

[0031] The beneficial effects of the present invention are:

[0032] 1. By setting a primary filtering device, the wastewater can be preliminarily filtered and the filtered filter residue can be collected at the same time. The impurities and waste oil in the wastewater can be filtered faster by rotating the impurity filter bucket and the waste oil filter bucket. One end of the impurity conveying pipeline can be sealed by the lifting of the sealing plug to prevent the impurity filter bucket from causing wastewater to flow out through the impurity conveying pipeline during use. The lifting of the sealing plug can drive the piston ring to lift and lift, and push the gas in the air storage chamber to expand or contract the sealing airbag. The expansion of the sealing airbag can seal the waste oil conveying pipeline to prevent wastewater from flowing out through the waste oil conveying pipeline. When the sealing plug rises and the sealing airbag contracts, the impurities on the impurity filter bucket and the waste oil on the waste oil filter bucket can be transported, thereby automatically completing the regular collection of impurities and waste oil, reducing labor input, and solving the technical problems of the existing refinery wastewater treatment filter material intercepting impurities, lacking a self-cleaning mechanism, and having no continuous slag discharge design.

[0033] 2. By setting up a re-filtration device, the wastewater after the initial filtration can be filtered and disinfected again. By utilizing the cooperation between the filter plate and the gas pipeline, the lifting and lowering of the gas pipeline can drive the deflection and lifting of the filter plate. After the deflection of the filter plate, it is driven to rotate by the rotary motor, which can merge the bubbles containing ozone transported by the gas pipeline with impurities in the water, accelerating the rising speed of the bubbles. When the filter plate is parallel to the re-filtration shell, the filter plate can be raised to salvage the scum on the water surface, reducing the labor input and realizing the integration of filtration and salvage, thus solving the technical problem of the existing refinery wastewater treatment scum cleaning relying on manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of a refinery wastewater treatment mechanism proposed by the present invention;

[0035] Figure 2 A perspective view of a conveying bucket structure of an oil refinery wastewater treatment mechanism proposed by the present invention;

[0036] Figure 3 A three-dimensional diagram of a Venturi baffle structure of a refinery wastewater treatment mechanism proposed by the present invention;

[0037] Figure 4 A three-dimensional diagram of the impurity filter bucket structure of an oil refinery wastewater treatment mechanism proposed by the present invention;

[0038] Figure 5 A three-dimensional diagram of a control motor structure of an oil refinery wastewater treatment mechanism proposed by the present invention;

[0039] Figure 6 A three-dimensional diagram of a sealing plug structure of a refinery wastewater treatment mechanism proposed by the present invention;

[0040] Figure 7A three-dimensional diagram of the secondary filtration housing structure of an oil refinery wastewater treatment mechanism proposed by the present invention;

[0041] Figure 8 A three-dimensional diagram of the structure of moving parts of a refinery wastewater treatment mechanism proposed by the present invention;

[0042] Figure 9 A perspective view of the rotating motor structure of an oil refinery wastewater treatment mechanism proposed by the present invention;

[0043] Figure 10 A three-dimensional diagram of a filter plate structure of an oil refinery wastewater treatment mechanism proposed by the present invention;

[0044] Figure 11 A three-dimensional diagram of a deflection connecting rod structure of a refinery wastewater treatment mechanism proposed by the present invention;

[0045] Figure 12 This is a three-dimensional diagram of the deflection gear structure of the refinery wastewater treatment mechanism proposed by the present invention.

[0046] Figure: 1. Primary filter housing; 2. Annular support frame; 21. Conveying bucket; 22. Venturi baffle; 23. Impurity filter bucket; 24. Waste oil filter bucket; 3. Impurity conveying pipe; 31. Screw pressing assembly; 32. Waste oil conveying pipe; 33. Scraper; 34. Drive motor; 4. Air storage chamber; 41. Push piston ring; 42. Sealing plug; 43. Sealing airbag; 44. Control motor; 45. Lifting gear; 46. Lifting rod; 5. Secondary filter housing; 51 , water pump; 6, cleaning tank; 61, moving parts; 62, moving frame; 63, rotating gear ring; 64, rotating motor; 65, gas pipeline; 66, lifting motor; 7, lifting ring; 71, filter plate; 72, support ring; 73, deflection link; 74, support roller; 75, transfer ring; 76, deflection gear; 77, deflection rack; 78, sealing elastic membrane; 8, ozone generator; 81, aerator; 82, delivery hose; 83, cleaning nozzle. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0048] Reference Figures 1-12 A refinery wastewater treatment mechanism includes a primary filter housing 1, a primary filter device installed on the primary filter housing 1, and a secondary filter device installed outside the primary filter housing 1.

[0049] like Figure 2-Figure 6As shown, in order to filter out larger impurities and waste oil contained in the wastewater, the primary filter device is located on the upper surface of the primary filter housing 1 and filters the wastewater to be filtered. The primary filter device includes a primary filter mechanism and a recovery mechanism. The primary filter mechanism filters impurities and waste oil in the transported wastewater, and the recovery mechanism recovers the filtered impurities and waste oil.

[0050] Specifically, in order to divert and transport wastewater, the primary filtration mechanism includes an annular support frame 2, which is fixedly mounted on the outer surface of the primary filtration housing 1. A conveying bucket 21 with a water inlet pipe is fixedly mounted on the upper surface of the annular support frame 2, and a Venturi baffle 22 distributed in a circular array is fixedly mounted on the inner wall of the conveying bucket 21. The Venturi baffle 22 is wavy in shape, and the two Venturi baffles 22 are symmetrically distributed, thereby forming a contraction and expansion channel, disturbing the laminar flow, extending the flow channel or inducing chaotic convection to break the laminar flow limitation and significantly improve the mixing efficiency.

[0051] Specifically, in order to quickly collect impurities and waste oil in wastewater, the inner wall of the annular support frame 2 is rotatably connected to an impurity filter bucket 23 with a gear ring, and the inner wall of the annular support frame 2 is rotatably connected to a waste oil filter bucket 24 with a gear ring. The impurity filter bucket 23 and the waste oil filter bucket 24 are both bucket-shaped. The waste oil filter bucket 24 is located outside the impurity filter bucket 23, and filters impurities first before filtering the waste oil.

[0052] Specifically, in order to recycle the filtered impurities and waste oil, the recovery mechanism includes an impurity conveying pipe 3, one end of the impurity conveying pipe 3 is rotatably connected to the lower end of the impurity filter bucket 23 through a bearing, one end of the impurity conveying pipe 3 passes through the lower surface of the primary filter housing 1 and is fixedly installed with a screw pressing component 31, the screw pressing component 31 is driven by a motor to rotate the screw rod to squeeze the water in the impurities to complete the dehydration work, the water enters the drain pipe through the screen and is discharged, and the impurities are discharged through the discharge port, the lower end of the waste oil filter bucket 24 is rotatably connected to the waste oil conveying pipe 32 through a bearing, one end of the waste oil conveying pipe 32 is fixedly installed with the outer surface of the primary filter housing 1, the waste oil conveying pipe 32 is located on the outer surface of the impurity conveying pipe 3, one end of the waste oil conveying pipe 32 is fixedly installed with the outer surface of the impurity conveying pipe 3, and the annular support The inner wall of the frame 2 is rotatably connected with a scraper 33 with a gear ring. The two scrapers 33 are respectively located inside the impurity filter bucket 23 and the waste oil filter bucket 24. The outer surface of the primary filter housing 1 is fixedly installed with a drive motor 34 through a support frame. The output shaft of one drive motor 34 is respectively engaged with the gear rings of the impurity filter bucket 23 and the waste oil filter bucket 24 through a gear set, and the delivery shaft of the other drive motor 34 is respectively engaged with the gear rings of the two scrapers 33 through a gear set. A backwashing system can be set inside the primary filter housing 1 to complete the backwashing of the impurity filter bucket 23 and the waste oil filter bucket 24. The pipeline for flushing the impurity filter bucket 23 can be installed on the scraper 33 located in the waste oil filter bucket 24, so that the impurity filter bucket 23 can be backwashed. The delivery of the cleaning liquid is connected through an annular rotary joint without affecting the rotation of the scraper 33.

[0053] Specifically, in order to seal the impurity conveying pipeline 3 and the waste oil conveying pipeline 32, an air storage chamber 4 is opened inside the impurity conveying pipeline 3, and a pushing piston ring 41 is slidably inserted inside the air storage chamber 4. The upper end of the pushing piston ring 41 passes through the upper surface of the impurity conveying pipeline 3 and is fixedly installed with a sealing plug 42. The outer surface of the sealing plug 42 is slidably inserted into the inner wall of the impurity conveying pipeline 3, and a sealing air bag 43 is fixedly installed on the outer surface of the impurity conveying pipeline 3. The outer surface of the sealing air bag 43 is fixedly connected to the inner wall of the air storage chamber 4 through the conveying pipe, and the sealing air bag 43 is fixedly connected to the inner wall of the air storage chamber 4 through the conveying pipe. After the bag 43 is inflated, it seals the waste oil conveying pipe 32. In order to automatically drive the sealing plug 42 to rise and fall, a control motor 44 is fixedly installed inside the conveying bucket 21. The inner wall of the conveying bucket 21 is rotatably connected to a lifting gear 45 with a threaded groove through a bearing. The inner wall of the lifting gear 45 is threadedly connected to a lifting rod 46. One end of the lifting rod 46 is slidably plugged into the lower surface of the conveying bucket 21, and one end of the lifting rod 46 is fixedly installed on the upper surface of the sealing plug 42. One end of the output shaft of the control motor 44 is meshed with the lifting gear 45 through a gear.

[0054] like Figure 7-12As shown, in order to filter the wastewater again, the re-filtration device is located outside the primary filter housing 1, and performs secondary filtration on the wastewater filtered by the primary filter device. The re-filtration device includes a re-filtration housing 5 with a water outlet pipe and a re-filtration mechanism. The re-filtration mechanism filters the wastewater in the re-filtration housing 5 again.

[0055] Specifically, in order to transport the wastewater filtered in the primary filter housing 1 into the secondary filter housing 5, the secondary filter housing 5 is arranged on the outer side of the primary filter housing 1, and a water pump 51 is fixedly installed on the water outlet end of the primary filter housing 1 through a connecting pipe, and the water outlet end of the water pump 51 is fixedly connected to the water inlet end of the secondary filter housing 5 through a connecting pipe.

[0056] Specifically, in order to refilter the water in the refilter housing 5, the refilter mechanism includes a cleaning tank 6, which is fixedly mounted on the outer surface of the refilter housing 5. A moving component 61 is fixedly mounted on the upper surface of the cleaning tank 6. The moving component 61 is composed of a frame, a screw rod rotatably connected to the frame, a motor driving the screw rod to rotate, and a guide rail mounted on the frame. The outer surface of the screw rod of the moving component 61 is threadedly connected to a moving frame 62. The outer surface of the moving frame 62 is slidably plugged into the guide rail of the moving component 61. The outer surface of the moving frame 62 A rotating gear ring 63 is rotatably connected to the bearing seat, and a rotating motor 64 is fixedly installed on the upper surface of the movable frame 62. One end of the output shaft of the rotating motor 64 is meshed with the rotating gear ring 63 through a gear. The inner wall of the rotating gear ring 63 is slidably plugged with a gas pipeline 65 with a gear ring, thereby driving the gas pipeline 65 to rotate. A lifting motor 66 is fixedly installed on the outer surface of the movable frame 62. One end of the output shaft of the lifting motor 66 is meshed with the gear ring of the gas pipeline 65 through a gear, thereby driving the gas pipeline 65 to rise and fall.

[0057] Specifically, in order to filter and stir the water in the re-filter housing 5, a lifting collar 7 with a connecting ring is slidably inserted at one end of the gas pipeline 65, and the lifting collar 7 is limited by two connecting rings located at the upper and lower ends of the lifting collar 7 on the gas pipeline 65. The outer surface of the lifting collar 7 is hinged with a filter plate 71 through a pin shaft, and a support ring 72 with a pillar is slidably inserted at the inner wall of the re-filter housing 5. One end of the filter plate 71 is hinged to the outer surface of the support ring 72 through a pin shaft. In order to drive the filter plates 71 distributed in an annular array to deflect synchronously, a deflection connecting rod 73 with a groove is fixedly installed on one end of the filter plate 71, and the outer surface of the support ring 72 is rotatably connected to a support roller 74. The outer surface of the supporting roller 74 is rotatably connected to a transfer ring 75 with a connecting column. The connecting column of the transfer ring 75 is slidably plugged into the inner wall of the groove of the deflection connecting rod 73. In order to drive the filter plate 71 to automatically deflect, complete the deformation, and switch the purpose of use, a deflection gear 76 is fixedly installed at one end of a filter plate 71, and a deflection rack 77 is fixedly installed at one end of the gas pipeline 65. The deflection gear 76 is meshed with the deflection rack 77. In order to seal between the gas pipeline 65 and the lifting ring 7, a sealing elastic membrane 78 is fixedly installed on the outer surface of the sealing ring of the gas pipeline 65. The other ends of the two sealing elastic membranes 78 are fixedly installed on the upper and lower surfaces of the lifting ring 7 respectively.

[0058] Specifically, in order to disinfect and filter the water in the re-filtration housing 5, an ozone generator 8 is fixedly installed on the outer surface of the frame of the movable part 61, and an aerator 81 is fixedly installed on the outer surface of the frame of the movable part 61. The air outlet end of the ozone generator 8 is fixedly connected to the air inlet end of the aerator 81 through a connecting pipe, and a delivery hose 82 is fixedly installed at the air outlet end of the aerator 81. One end of the delivery hose 82 is fixedly installed to one end of the gas pipeline 65 through a rotary joint. A cleaning nozzle 83 is fixedly installed on the upper surface of the cleaning tank 6, and one end of the cleaning nozzle 83 is fixedly connected to a water storage tank containing cleaning liquid through a suction pump.

[0059] The present invention provides a method for treating refinery wastewater, comprising the following steps:

[0060] S1: The water inlet pipe on the wastewater conveying bucket 21 is conveyed into the conveying bucket 21, and the conveyed wastewater can be diverted by the Venturi partition 22 in the conveying bucket 21. The water flow flows along the trajectory of the Venturi partition 22, and the water flows impact each other to prevent impurities in the wastewater from adhering to the Venturi partition 22. The wastewater enters the impurity filter bucket 23, and the impurity filter bucket 23 is driven by the start of the drive motor 34 to rotate on the annular support frame 2, centrifuging the conveyed wastewater, so that the water and waste oil in the wastewater are thrown out and enter the waste oil filter bucket 24. The waste oil filter bucket 24 rotates as driven by the drive motor 34, and the water in the waste oil is thrown out. The filtered water enters the primary filter housing 1.

[0061] S2: When it is necessary to clean the impurities and waste oil collected in the impurity filter 23 and the waste oil filter 24, the control motor 44 in the conveying hopper 21 is started, and the gear of the control motor 44 drives the lifting gear 45 to rotate, and the lifting gear 45 drives the lifting rod 46 threadedly connected thereto to rise. After the lifting rod 46 drives the sealing plug 42 to rise, the sealing plug 42 leaves the impurity conveying pipe 3, and at the same time, the sealing plug 42 drives the pushing piston ring 41 in the air storage chamber 4 to rise, and the gas below the air storage chamber 4 is sucked, so that after the gas in the sealing airbag 43 is sucked, the sealing airbag 43 shrinks, and the seal on the waste oil conveying pipe 32 is released.

[0062] S3: Another driving motor 34 drives the scraper 33 on the annular support frame 2 to rotate, and the scraper 33 scrapes the inner walls of the impurity filter bucket 23 and the waste oil filter bucket 24, so that the scraped impurities and waste oil enter the impurity conveying pipe 3 and the waste oil conveying pipe 32. The impurities in the impurity conveying pipe 3 enter the screw pressing component 31, and the screw pressing component 31 rotates to remove moisture from the impurities containing water, and the waste oil can be collected through the oil outlet of the waste oil conveying pipe 32.

[0063] S4: After the moving part 61 on the cleaning tank 6 is started, it drives the moving frame 62 to move. The moving frame 62 drives the gas pipeline 65 to move to the top of the re-filter housing 5. After the lifting motor 66 is started, the gear on the lifting motor 66 drives the gas pipeline 65 to descend. After the support ring 72 enters the re-filter housing 5 and the pillar on the support ring 72 contacts the inner bottom wall of the re-filter housing 5, the support ring 72 is limited. After the gas pipeline 65 continues to descend on the lifting collar 7, the deflection rack 77 on the gas pipeline 65 drives the deflection gear 76 on the filter plate 71 to rotate, and the deflection gear 76 drives the filter plate 71 to rotate. The rotation of the filter plate 71 is deflected through the deflection connecting rod 73. The deflection connecting rod 73 drives the transfer ring 75 to rotate and then drives the remaining filter plates 71 to deflect. After that, the filter plate 71 deflects, the water pump 51 is started, and the water in the primary filter housing 1 is sucked into the re-filter housing 5.

[0064] S5: After the ozone generator 8 is started, the generated ozone enters the aerator 81 to generate nanobubbles, which enter the air pipeline 65 through the delivery hose 82 and then enter the water through the air pipeline 65. The bacteria and impurities in the water are removed by the nanobubbles and ozone. At the same time, the nanobubbles wrap the impurities and transport them to the surface of the water, which facilitates the removal of tiny impurities. After the rotating motor 64 is started, it drives the rotating gear ring 63 to rotate, and the rotating gear ring 63 drives the air pipeline 65 to rotate. The air pipeline 65 drives the lifting ring 7 slidably connected to it to rotate, and the lifting ring 7 drives the filter plate 71 to rotate, rotating the water in the re-filtration housing 5, so that the bubbles can wrap the impurities.

[0065] S6: After the disinfection is completed, the air supply pipe 65 rises and drives the deflection rack 77 to rise. The deflection rack 77 drives the filter plate 71 to reset through the deflection gear 76. After the air supply pipe 65 rises, it drives the lifting ring 7 to rise, and drives the support ring 72 to rise. The reset filter plate 71 salvages impurities on the water surface. The moving part 61 drives the filter plate 71 to move to the top of the cleaning tank 6. After the air supply pipe 65 descends, the lower surface support of the support ring 72 contacts the inner wall of the cleaning tank 6, and the filter plate 71 is deflected. After the cleaning nozzle 83 sprays the cleaning liquid on the filter plate 71, the support ring 72 and the air supply pipe 65, the air supply pipe 65 drives the filter plate 71 to rotate to fully rinse the impurities on the filter plate 71.

[0066] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A refinery wastewater treatment mechanism, comprising a primary filter housing (1), characterized in that: It also includes a primary filter device installed on the primary filter housing (1) and a secondary filter device installed outside the primary filter housing (1); The primary filtration device includes a primary filtration mechanism and a recovery mechanism, wherein the primary filtration mechanism filters impurities and waste oil from the transported wastewater, and the recovery mechanism recovers the filtered impurities and waste oil; The primary filtering mechanism comprises an annular support frame (2), an impurity filter hopper (23) with a toothed ring is rotatably connected to the inner wall of the annular support frame (2), a waste oil filter hopper (24) with a toothed ring is rotatably connected to the inner wall of the annular support frame (2), and the waste oil filter hopper (24) is located outside the impurity filter hopper (23); The recovery mechanism comprises an impurity conveying pipe (3), one end of the impurity conveying pipe (3) is rotatably connected to the lower end of the impurity filter bucket (23) through a bearing, the lower end of the waste oil filter bucket (24) is rotatably connected to the waste oil conveying pipe (32) through a bearing, the waste oil conveying pipe (32) is located on the outer surface of the impurity conveying pipe (3), the inner wall of the annular support frame (2) is rotatably connected to a scraper (33) with a gear ring, the two scrapers (33) are respectively located inside the impurity filter bucket (23) and the waste oil filter bucket (24), the outer surface of the primary filter housing (1) is fixedly mounted with a drive motor (34) through the support frame, the output shaft of one drive motor (34) is respectively engaged with the gear rings of the impurity filter bucket (23) and the waste oil filter bucket (24) through a gear set, and the delivery shaft of the other drive motor (34) is respectively engaged with the gear rings of the two scrapers (33) through a gear set; An air storage chamber (4) is provided inside the impurity delivery pipe (3), a pushing piston ring (41) is slidably inserted inside the air storage chamber (4), an upper end of the pushing piston ring (41) passes through the upper surface of the impurity delivery pipe (3) and is fixedly installed with a sealing plug (42), an outer surface of the sealing plug (42) is slidably inserted with the inner wall of the impurity delivery pipe (3), a sealing air bag (43) is fixedly installed on the outer surface of the impurity delivery pipe (3), an outer surface of the sealing air bag (43) is fixedly connected with the inner wall of the air storage chamber (4) through a delivery pipe, and the sealing air bag (43) After inflation, the waste oil conveying pipeline (32) is sealed. A control motor (44) is fixedly installed inside the conveying bucket (21). The inner wall of the conveying bucket (21) is rotatably connected to a lifting gear (45) with a thread groove through a bearing. The inner wall of the lifting gear (45) is threadedly connected to a lifting rod (46). One end of the lifting rod (46) is slidably plugged into the lower surface of the conveying bucket (21). One end of the lifting rod (46) is fixedly installed on the upper surface of the sealing plug (42). One end of the output shaft of the control motor (44) is meshed with the lifting gear (45) through a gear. The secondary filtration device performs secondary filtration on the wastewater filtered by the primary filtration device.

2. The refinery wastewater treatment mechanism according to claim 1, characterized in that: The annular support frame (2) is fixedly mounted on the outer surface of the primary filter housing (1); a conveying bucket (21) with a water inlet pipe is fixedly mounted on the upper surface of the annular support frame (2); and Venturi baffles (22) distributed in an annular array are fixedly mounted on the inner wall of the conveying bucket (21); the Venturi baffles (22) are wavy in shape, and two Venturi baffles (22) are symmetrically distributed.

3. The refinery wastewater treatment mechanism according to claim 2, characterized in that: One end of the impurity conveying pipe (3) passes through the lower surface of the primary filter housing (1) and is fixedly mounted with a screw pressing assembly (31); one end of the waste oil conveying pipe (32) is fixedly mounted to the outer surface of the primary filter housing (1); and one end of the waste oil conveying pipe (32) is fixedly mounted to the outer surface of the impurity conveying pipe (3).

4. The refinery wastewater treatment mechanism according to claim 3, characterized in that: The refiltration device comprises a refiltration housing (5) with a water outlet pipe and a refiltration mechanism, wherein the refiltration housing (5) is arranged on the outer side of the primary filter housing (1), a water pump (51) is fixedly mounted on the water outlet end of the primary filter housing (1) via a connecting pipe, and the water outlet end of the water pump (51) is fixedly connected to the water inlet end of the refiltration housing (5) via the connecting pipe.

5. The refinery wastewater treatment mechanism according to claim 4, characterized in that: The refiltration mechanism comprises a cleaning tank (6), the cleaning tank (6) being fixedly mounted on the outer surface of the refiltration housing (5), a moving component (61) being fixedly mounted on the upper surface of the cleaning tank (6), the outer surface of the screw rod of the moving component (61) being threadedly connected to a moving frame (62), the outer surface of the moving frame (62) being slidably plugged into the guide rail of the moving component (61), the outer surface of the moving frame (62) being rotatably connected to a rotating gear ring (63) through a bearing seat, a rotating motor (64) being fixedly mounted on the upper surface of the moving frame (62), one end of an output shaft of the rotating motor (64) being meshed with the rotating gear ring (63) through a gear, an air delivery pipe (65) with a gear ring being slidably plugged into the inner wall of the rotating gear ring (63), a lifting motor (66) being fixedly mounted on the outer surface of the moving frame (62), one end of an output shaft of the lifting motor (66) being meshed with the gear ring of the air delivery pipe (65) through a gear.

6. The refinery wastewater treatment mechanism according to claim 5, characterized in that: One end of the gas pipeline (65) is slidably connected to a lifting ring (7) with a connecting ring, and the lifting ring (7) is limited by two connecting rings on the gas pipeline (65) located at the upper and lower ends of the lifting ring (7). The outer surface of the lifting ring (7) is hinged with a filter plate (71) through a pin shaft, and the inner wall of the re-filter housing (5) is slidably connected to a support ring (72) with a pillar. One end of the filter plate (71) is hinged to the outer surface of the support ring (72) through a pin shaft. A deflection connecting rod (73) with a groove is fixedly installed on one end of the filter plate (71), and the outer surface of the support ring (72) is rotatably connected to a support roller. The outer surface of the supporting roller (74) is rotatably connected to a transfer ring (75) with a connecting column, and the connecting column of the transfer ring (75) is slidably plugged into the inner wall of the groove of the deflection connecting rod (73). A deflection gear (76) is fixedly installed on one end of the filter plate (71), and a deflection rack (77) is fixedly installed on one end of the gas transmission pipe (65). The deflection gear (76) is meshed with the deflection rack (77). A sealing elastic membrane (78) is fixedly installed on the outer surface of the sealing ring of the gas transmission pipe (65), and the other ends of the two sealing elastic membranes (78) are fixedly installed on the upper surface and the lower surface of the lifting ring (7), respectively.

7. The refinery wastewater treatment mechanism according to claim 6, characterized in that: An ozone generator (8) is fixedly mounted on the outer surface of the frame of the movable component (61), and an aerator (81) is fixedly mounted on the outer surface of the frame of the movable component (61). The air outlet end of the ozone generator (8) is fixedly connected to the air inlet end of the aerator (81) through a connecting pipe. A delivery hose (82) is fixedly mounted on the air outlet end of the aerator (81), and one end of the delivery hose (82) is fixedly mounted to one end of the air delivery pipe (65) through a rotary joint. A cleaning nozzle (83) is fixedly mounted on the upper surface of the cleaning tank (6), and one end of the cleaning nozzle (83) is fixedly connected to a water storage tank containing cleaning liquid through a suction pump.

8. A method for treating refinery wastewater using the refinery wastewater treatment mechanism according to claim 7, characterized in that: S1: The water inlet pipe on the wastewater conveying bucket (21) is conveyed into the conveying bucket (21), and the conveyed wastewater can be diverted by the Venturi partition (22) in the conveying bucket (21). The water flows along the trajectory of the Venturi partition (22), and the water flows impact each other to prevent impurities in the wastewater from adhering to the Venturi partition (22). The wastewater enters the impurity filter bucket (23), and the impurity filter bucket (23) is driven by the start of the drive motor (34) to drive the impurity filter bucket (23) to rotate on the annular support frame (2), centrifuging the conveyed wastewater so that the water and waste oil in the wastewater are thrown out and enter the waste oil filter bucket (24). The waste oil filter bucket (24) rotates with the drive of the drive motor (34), and the water in the waste oil is thrown out. The filtered water enters the primary filter housing (1); S2: When it is necessary to clean the impurities and waste oil collected in the impurity filter hopper (23) and the waste oil filter hopper (24), the control motor (44) in the conveying hopper (21) is started, and the gear of the control motor (44) drives the lifting gear (45) to rotate, and the lifting gear (45) drives the lifting rod (46) threadedly connected thereto to rise, and the lifting rod (46) drives the sealing plug (42) to rise, and the sealing plug (42) leaves the impurity conveying pipe (3), and at the same time, the sealing plug (42) drives the pushing piston ring (41) in the air storage chamber (4) to rise, and the gas below the air storage chamber (4) is sucked, so that after the gas in the sealing air bag (43) is sucked, the sealing air bag (43) contracts, and the seal on the waste oil conveying pipe (32) is released; S3: Another driving motor (34) drives the scraper (33) on the annular support frame (2) to rotate, and the scraper (33) scrapes the inner wall of the impurity filter bucket (23) and the waste oil filter bucket (24), so that the scraped impurities and waste oil enter the impurity conveying pipe (3) and the waste oil conveying pipe (32). The impurities in the impurity conveying pipe (3) enter the screw pressing component (31), and the impurities containing water are removed by the rotation of the screw pressing component (31). The waste oil can be collected through the oil outlet of the waste oil conveying pipe (32); S4: After the moving part (61) on the cleaning tank (6) is started, the moving frame (62) is driven to move. The moving frame (62) drives the gas pipeline (65) to move to the top of the re-filter housing (5). After the lifting motor (66) is started, the gear on the lifting motor (66) drives the gas pipeline (65) to descend. The support ring (72) enters the re-filter housing (5). After the pillar on the support ring (72) contacts the inner bottom wall of the re-filter housing (5), the support ring (72) is limited. The gas pipeline (65) continues to move in After the lifting ring (7) is lowered, the deflection rack (77) on the gas transmission pipe (65) drives the deflection gear (76) on the filter plate (71) to rotate, and the deflection gear (76) drives the filter plate (71) to rotate. The rotation of the filter plate (71) is deflected through the deflection connecting rod (73). The deflection connecting rod (73) drives the transfer ring (75) to rotate and drives the remaining filter plates (71) to deflect. After the filter plate (71) is deflected, the water pump (51) is started to suck the water in the primary filter housing (1) into the secondary filter housing (5); S5: After the ozone generator (8) is started, the generated ozone enters the aerator (81) to generate nanobubbles, which then enter the air delivery pipe (65) through the delivery hose (82) and then enter the water through the air delivery pipe (65). The bacteria and impurities in the water are removed by the nanobubbles and ozone. At the same time, the nanobubbles wrap the impurities and transport them to the surface of the water, making it easier to remove the tiny impurities. After the rotating motor (64) is started, it drives the rotating gear ring (63) to rotate, and the rotating gear ring (63) drives the air delivery pipe (65) to rotate. The air delivery pipe (65) drives the lifting ring (7) that is slidably connected to it to rotate, and the lifting ring (7) drives the filter plate (71) to rotate, rotating the water in the re-filtration housing (5), making it easier for the bubbles to wrap the impurities. S6: After the disinfection is completed, the air supply pipe (65) rises and drives the deflection rack (77) to rise. The deflection rack (77) drives the filter plate (71) to reset through the deflection gear (76). After the air supply pipe (65) rises, it drives the lifting ring (7) to rise, and drives the support ring (72) to rise. The reset filter plate (71) salvages impurities on the water surface. The moving part (61) drives the filter plate (71) to move to the top of the cleaning tank (6). After the air supply pipe (65) descends, the lower surface support of the support ring (72) contacts the inner wall of the cleaning tank (6), and the filter plate (71) is deflected. After the cleaning nozzle (83) sprays the cleaning liquid on the filter plate (71), the support ring (72) and the air supply pipe (65), the air supply pipe (65) drives the filter plate (71) to rotate, and the impurities on the filter plate (71) are fully washed.

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