An online backflush wedge filter cartridge filtration device for petroleum refining

Abstract

This invention relates to the field of petroleum filtration, and particularly to an online backflushing wedge filter element filtration device for petroleum refining. It includes a tank with a through-type upper and lower section, with top covers installed at both ends. A through-pipe runs through both the upper and lower top covers. Several telescopic plates are installed on the lower top cover, with annular plates at the ends of the telescopic plates. A support shaft is installed on the annular plates, and another annular plate is installed on the top of the support shaft. Filtration units are installed between the annular plates. This invention uses a drive assembly to move an adjusting plate between the strip plates, adjusting the gap width between the adjusting plate and the strip plates. This allows it to adapt to different particle sizes and morphologies of impurities in petroleum, solving the contradiction between filtration accuracy and flow rate in traditional filtration devices, as well as the problem of fixed filter gaps in existing technologies that cannot be flexibly adapted.

Description

Technical Field

[0001] This invention relates to the field of petroleum filtration, and in particular to an online backflushing wedge filter cartridge filtration device for petroleum refining. Background Technology

[0002] In the material transportation of petrochemical plants, it is necessary to filter mechanical and colloidal impurities in the liquid medium in order to improve the purity of the medium and ensure the operation and reaction efficiency of the equipment.

[0003] Traditional mechanical filters rely on built-in fixed filter elements for filtration, but they have several drawbacks: First, there is a trade-off between filtration accuracy and flow rate. High-precision and high-concentration oil filtration can increase resistance, affecting fluid flow and causing pressure loss. Second, after long-term use, the filter element is easily clogged by impurities. Maintenance requires disassembling the filter flange cover for cleaning or replacement, which relies on manual operation, resulting in high labor intensity, low efficiency, and increased maintenance costs. Third, the pressure drop generated when fluid passes through may affect the normal operation of the system, requiring additional power to compensate for the pressure loss.

[0004] In existing technologies, such as the patent with publication number CN111111289A, a metal wedge-shaped wire mesh filter element for backwashing feedstock oil of residual oil hydrotreating is disclosed. After the feedstock oil is pressurized, it enters a hollow filter rod through through-holes. The liquid portion flows out through the filter gaps in the side wall, while solid impurities are trapped inside the hollow filter rod, achieving filtration. During backwashing, reverse pressure is applied, causing the liquid to enter the hollow filter rod through the filter gaps and then flow out through the through-holes to remove impurities. However, although this technology improves some of the original problems, there are still aspects that require further optimization to better meet actual testing needs.

[0005] The gaps between the filter slits in the aforementioned comparative documents are fixed values ​​and cannot be adjusted according to the particle size, morphology, and other characteristics of impurities in different petroleum products. This means they cannot flexibly adapt to the filtration needs of different petroleum products, making it difficult to balance filtration accuracy and flow efficiency when processing petroleum products with significantly different impurity compositions. Furthermore, subsequent cleaning requires rinsing with water from bottom to top. Due to the limited internal space of the tank and the arrangement of the hollow filter rods, the rinsing water flow cannot completely cover all filtration areas, easily leading to impurity residue. To achieve thorough cleaning, the filter element must be removed from the tank, a cumbersome operation that increases maintenance workload.

[0006] Therefore, based on the above-stated viewpoints, there is still room for improvement in existing filtration devices. Summary of the Invention

[0007] To address the aforementioned problems, this invention provides an online backflushing wedge filter cartridge filtration device for petroleum refining, comprising a tank that is vertically connected, with a top cover installed at both the upper and lower ends of the tank, a through pipe running through both the upper and lower top covers, and several telescopic plates installed on the lower top cover.

[0008] Several telescopic plates are connected at their ends by a detachable ring plate. Support shafts are symmetrically mounted on the ring plates, and ring plates are also mounted on the top of the support shafts. Filter units for filtering oil impurities are installed between the ring plates.

[0009] A rotating shaft is mounted on the inner diameter of the bottom annular plate via a torsion spring, and a circular sealing plate is mounted between the rotating shafts.

[0010] Preferably, the filter unit includes several strip plates that are bolted together and installed between two annular plates, and the strip plates are evenly distributed along the axis of the annular plates.

[0011] The cross-section of the strip plate is elliptical.

[0012] Preferably, several sliding grooves are provided on the opposite sides of the upper and lower annular plates, and sliding plates are slidably arranged in the sliding grooves. An adjustment plate is detachably installed between the upper and lower sliding plates.

[0013] The cross-section of the regulating plate is also elliptical.

[0014] Preferably, the inner diameter of the tank is provided with a ring-shaped inclined frame, and the inclined surface of the inclined frame corresponds to the inner diameter of the upper annular plate.

[0015] The inclined frame is equipped with a drive assembly for moving several sliding plates. The drive assembly includes an annular cavity inside the inclined frame, the bottom of which is connected to the annular plate at the top.

[0016] A ring-shaped threaded disc is rotatably installed inside the annular cavity.

[0017] The top of the upper sliding plate passes through the annular cavity and is threadedly connected to the bottom of the threaded disc.

[0018] Preferably, a drive motor is mounted inside the annular cavity via a motor mount, an internal gear ring is mounted on the upper end of the threaded disc, and a drive gear that meshes with the internal gear ring is sleeved on the telescopic end of the drive motor.

[0019] Preferably, the upper through pipe is provided with a transmission unit for supplying oil toward the inside of the tank. The transmission unit includes a sliding pipe that is slidably disposed in the through pipe, and a vertical pipe that communicates with the bottom of the sliding pipe is installed therethrough. A one-way valve is installed on the inner diameter of the vertical pipe.

[0020] Support plates are symmetrically installed at the bottom of the vertical pipe, and splash plates corresponding to the ports of the vertical pipe are set between the support plates.

[0021] Preferably, a pusher plate corresponding to the inner diameter of the annular plate is fitted on the outer side of the vertical tube, and several vibration motors are installed inside the pusher plate.

[0022] Preferably, the sliding tube is also provided with a pushing component for driving the circular sealing plate at the bottom to rotate. The pushing component includes an abutment plate provided on the bottom wall of the tank body. The sliding tube has an annular storage cavity inside, and the bottom of the storage cavity is connected to the bottom of the sliding tube.

[0023] The top of the vertical tube extends into the storage cavity, and a reset spring is installed between the top of the vertical tube and the inner top wall of the storage cavity.

[0024] Preferably, a vertical groove is provided on the inner diameter of the upper through pipe, and an active plate located in the vertical groove is provided on the outer side of the sliding pipe.

[0025] The inner diameter of the upper annular plate is also provided with a contact plate corresponding to the active plate.

[0026] Preferably, the push plate is also provided with a structural groove corresponding to the contact plate, and a sealing plate is hinged in the structural groove by a torsion spring.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] I. This invention uses a drive component to move an adjustment plate between strip plates, adjusting the gap width between the adjustment plate and the strip plates. This allows it to adapt to the particle size and morphology of impurities in different petroleum products, solving the contradiction between filtration accuracy and flow rate in traditional filtration devices, as well as the problem of fixed filtration gaps in existing technologies that cannot be flexibly adapted.

[0029] Second, this invention uses sliding pipes and vertical pipes to transport cleaning water, which is then evenly sprayed through a splash plate. Combined with a vibrating motor, a vibration adjustment plate, and a strip plate, it achieves online backflushing cleaning. This removes filter element impurities without disassembling the filter, reducing manual labor intensity and improving maintenance efficiency. It solves the problems of traditional devices that require disassembly for cleaning or replacement, resulting in high labor intensity, low efficiency, and high maintenance costs.

[0030] Third, this invention uses a telescopic plate and a support shaft in conjunction with a top extension cylinder to move the filter unit out of the tank as a whole. The annular plate and the telescopic plate are detachably connected, and the strip plate and the adjustment plate of the filter unit are detachably set, so as to realize the quick removal and disassembly maintenance of the filter unit. This solves the problems of traditional devices requiring the disassembly of multiple parts, complicated operation, and high labor intensity during maintenance. Attached Figure Description

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0032] Figure 1 This is a schematic diagram of the structure of the main body of the present invention.

[0033] Figure 2 This is a cross-sectional view of the main body of the present invention.

[0034] Figure 3This is a bottom view of the circular sealing plate of the present invention.

[0035] Figure 4 This is a schematic diagram of the structure of the filter unit of the present invention.

[0036] Figure 5 This is the present invention. Figure 4 Enlarged view of part of the structure at point A in the middle.

[0037] Figure 6 This is a planar sectional view of the strip plate and the adjusting plate of the present invention.

[0038] Figure 7 This is a schematic diagram of the structure of the driving component of the present invention.

[0039] Figure 8 This is the present invention. Figure 7 Enlarged view of part of the structure at point B.

[0040] Figure 9 This is a cross-sectional view of the transmission unit and the driving component of the present invention.

[0041] Figure 10 This is the present invention. Figure 9 Enlarged view of part of the structure at point C.

[0042] Figure 11 This is the present invention. Figure 9 Enlarged view of part of the structure at point D.

[0043] Figure 12 This is a schematic diagram of the structure of the support unit of the present invention.

[0044] In the diagram, 1. Tank body; 10. Top cover; 11. Through pipe; 12. Telescopic plate; 13. Annular plate; 14. Support shaft; 15. Circular sealing plate; 2. Filter unit; 20. Strip plate; 21. Sliding groove; 22. Sliding plate; 23. Adjusting plate; 3. Drive assembly; 30. Inclined frame; 31. Annular cavity; 32. Threaded disc; 33. Drive motor; 34. Internal gear ring; 35. Drive gear; 4. Transmission unit; 40. Sliding pipe ; 41. Vertical pipe; 42. One-way valve; 43. Support plate; 44. Splash plate; 45. Pushing disc; 5. Pushing assembly; 50. Contact plate; 51. Receiving cavity; 52. Reset spring; 53. Vertical groove; 54. Active plate; 55. Contact plate; 56. Structural groove; 57. Sealing plate; 6. Support unit; 60. Support ring; 61. Support column; 62. Cross; 63. Top extension cylinder; 64. Pushing cylinder; 65. Pushing ring. Detailed Implementation

[0045] The following combination Figures 1 to 12 The embodiments of the present invention will be described in detail below.

[0046] This application discloses an online backflushing wedge filter element filtration device for petroleum refining, which is applied to the filtration of impurities in various oil products during the petroleum refining process. It can intercept mechanical impurities, colloidal particles and other pollutants in petroleum. Furthermore, it can achieve rapid cleaning of the filter element through online backflushing, eliminating the need for frequent disassembly and maintenance, reducing labor intensity and downtime costs, and flexibly adjusting the filter gap to adapt to different oil impurities.

[0047] Example 1: Refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the tank includes a tank body 1, a top cover 10, a through pipe 11, a telescopic plate 12, an annular plate 13, a support shaft 14, a filter unit 2, and a circular sealing plate 15. The upper and lower ends of the tank body 1 are connected. The top cover 10 is installed at both the upper and lower ends of the tank body 1. The top cover 10 is used to seal the upper and lower ends of the tank body 1. When maintenance is required, the personnel can remove the top cover 10 from the tank body 1.

[0048] Both the upper and lower top covers 10 are connected by connecting pipes 11. Oil can enter the tank 1 through the connecting pipe 11 at the upper end, and then be discharged to the outside of the tank 1 through the connecting pipe 11 at the lower end.

[0049] Several telescopic plates 12 are installed on the lower top cover 10. The ends of the telescopic plates 12 are detachably connected to an annular plate 13. The telescopic ends of the telescopic plates 12 are driven by internal push springs and can reciprocate. Support shafts 14 are symmetrically installed on the annular plates 13. The telescopic plates 12 are used to support the annular plates 13 in contact with them, and the support shafts 14 are used to connect two annular plates 13 so that the telescopic plates 12 can support the two annular plates 13 simultaneously.

[0050] A ring plate 13 is also installed on the top of the support shaft 14. A filter unit 2 for filtering oil impurities is installed between the ring plates 13. During subsequent maintenance, the bottom cover 10 can be removed and the filter unit 2 inside can be taken out from the tank 1. After that, the personnel can remove the ring plate 13 from the end of the telescopic plate 12 to maintain the filter unit 2.

[0051] A rotating shaft is installed on the inner diameter of the bottom annular plate 13 via a torsion spring. A circular sealing plate 15 is installed between the rotating shafts. When oil enters the tank 1, it can enter the filter unit 2 through the middle of the upper annular plate 13 for filtration. The bottom circular sealing plate 15 is used to block the inner diameter of the lower annular plate 13 to prevent oil from falling into the lower through pipe 11 without passing through the filter unit 2 and being discharged to the outside of the tank 1.

[0052] Continue to refer to Figure 4 , Figure 5 and Figure 6As shown, this is the filter unit 2 used to filter oil impurities. Specifically, the filter unit 2 includes strip plates 20, sliding grooves 21, sliding plates 22, and adjusting plates 23. Several strip plates 20 are installed between two annular plates 13 by bolting, and the strip plates 20 are evenly distributed along the axis of the annular plates 13. The cross-section of the strip plates 20 is elliptical, that is, when oil enters between the annular plates 13, the falling oil will accumulate on the upper end of the circular sealing plate 15, and at this time the oil will flow into the tank 1 through the gap between the strip plates 20.

[0053] Several sliding grooves 21 are provided on the opposite sides of the upper and lower annular plates 13. Sliding plates 22 are slidably arranged in the sliding grooves 21. An adjustment plate 23 is detachably installed between the upper and lower sliding plates 22. The cross section of the adjustment plate 23 is also elliptical. When the sliding plate 22 is driven by an external force, it can drive the corresponding adjustment plate 23 to move towards or away from the axis of the annular plate 13 under the limiting guidance of the sliding groove 21. Both the strip plate 20 and the adjustment plate 23 are elliptical.

[0054] The protruding ends between the two ovals correspond to each other and have a tiny gap. This gap is just enough for the oil liquid to pass through, while the residue inside the oil cannot pass through and remains between the annular plates 13. The oil that passes through can enter the tank 1, then flow along the inner diameter of the tank 1 and finally flow out through the bottom through pipe 11 to complete the filtration.

[0055] Furthermore, the gap width between the strip plate 20 and the adjusting plate 23 can be adjusted according to actual usage needs. The adjusting plate 23 is moved by external force, so that the protrusion in the middle of the adjusting plate 23 and the protrusion in the middle of the strip plate 20 are staggered. Since the outer side of the ellipse decreases from the middle to both sides, the gap between the strip plate 20 and the adjusting plate 23 will gradually increase, so as to accommodate oil of different viscosity states and allow it to pass through. The distance between the adjusting plate 23 and the strip plate 20 can also be adjusted to the maximum. In the subsequent cleaning process, water is supplied into the tank 1 through the upper through pipe 11 to clean away the residual residue.

[0056] Reference Figure 7 and Figure 8As shown, a ring-shaped inclined frame 30 is provided on the inner diameter of the tank body 1. The inclined surface of the inclined frame 30 corresponds to the inner diameter of the upper annular plate 13. A drive assembly 3 for driving several sliding plates 22 to move is installed inside the inclined frame 30. Specifically, the drive assembly 3 includes the inclined frame 30, an annular cavity 31, a threaded disc 32, a drive motor 33, an internal gear ring 34, and a drive gear 35. The annular cavity 31 is opened inside the inclined frame 30. The bottom of the annular cavity 31 is connected to the upper annular plate 13. A ring-shaped threaded disc 32 is rotatably arranged inside the annular cavity 31. The top of the upper sliding plate 22 passes through the annular cavity 31 and is threadedly connected to the bottom of the threaded disc 32. That is, the inclined frame 30 can prevent falling oil from entering the tank body 1 in advance through the gap at the upper end of the annular plate 13. When the oil flows to the inclined surface inside the inclined frame 30, it can enter the annular plate 13 along its inclined surface.

[0057] When the threaded disc 32 is driven by an external force, it can rotate in the annular cavity 31, and when it rotates, it drives the sliding plate 22 at the lower end to slide in the corresponding sliding groove 21, so that the sliding plate 22 can drive the adjustment plate 23 and the strip plate 20 to adjust the distance.

[0058] A drive motor 33 is also installed in the annular cavity 31 via a motor mount. An internal gear ring 34 is installed on the upper end of the threaded disc 32. The telescopic end of the drive motor 33 is fitted with a drive gear 35 that meshes with the internal gear ring 34. The drive motor 33 can drive the drive gear 35 to rotate, so that the drive gear 35 drives the threaded disc 32 to rotate in the annular cavity 31 through the internal gear ring 34. The forward and reverse rotation of the main shaft of the drive motor 33 can drive the threaded disc 32 to rotate in both directions, so that the threaded disc 32 can indirectly drive the adjusting plate 23 to move back and forth.

[0059] It should be noted that the bottom of the inclined frame 30 is in contact with the upper end of the annular plate 13 rather than in fixed contact. Therefore, when the annular plate 13 is subsequently removed along with the lower top cover 10, the annular plate 13 may not be in contact with the inclined frame 30, and the corresponding sliding plate 22 will no longer be threadedly connected to the bottom of the threaded disc 32.

[0060] Conversely, after the top cover 10 is reinstalled at the lower end of the tank body 1, the annular plate 13 can continue to contact the lower end of the inclined frame 30, and the end of the sliding plate 22 can continue to be threadedly connected to the top of the threaded disc 32.

[0061] Reference Figure 9 , Figure 10 and Figure 11As shown, a transmission unit 4 for supplying oil to the inside of the tank 1 is provided inside the upper through pipe 11. Specifically, the transmission unit 4 includes a sliding pipe 40, a vertical pipe 41, a one-way valve 42, a support plate 43, a splash plate 44, and a pusher plate 45. The sliding pipe 40 is slidably disposed inside the through pipe 11. A vertical pipe 41 communicating with the bottom of the sliding pipe 40 is installed. A one-way valve 42 is installed on the inner diameter of the vertical pipe 41. The sliding pipe 40 can drive the bottom vertical pipe 41 to slide up and down inside the through pipe 11. The top of the sliding pipe 40 can be connected to an external oil supply device. Oil is supplied to the inside of the sliding pipe 40 through the sliding pipe 40, the vertical pipe 41, and the one-way valve 42. The opening direction of the one-way valve 42 is towards the inside of the tank 1, that is, oil can enter the inside of the tank 1 through the one-way valve 42.

[0062] Support plates 43 are symmetrically installed at the bottom of the vertical pipe 41. Splash plates 44 corresponding to the ends of the vertical pipe 41 are arranged between the support plates 43. The support plates 43 can support the splash plates 44. That is, when the oil is sprayed from the end of the vertical pipe 41, it will come into contact with the splash plates 44. After the oil hits the splash plates 44, it will form multiple planar water streams, thereby increasing the spray area of ​​the oil and allowing the oil to fully contact the several strip plates 20 and the adjusting plate 23.

[0063] The outer side of the vertical pipe 41 is also fitted with a push circular plate 45 whose outer side corresponds to the inner diameter of the annular plate 13. Several vibration motors (not shown) are also installed inside the push circular plate 45. That is, in actual use, after the oil filtration is completed, a lot of impurities will be trapped between the strip plate 20 and the adjusting plate 23, especially the bottom extension section of the strip plate 20 and the adjusting plate 23. At this time, some oil may still be unable to be filtered due to the blockage of the gap by impurities and insufficient air pressure.

[0064] In this case, the sliding tube 40 can indirectly drive the push plate 45 to descend into the middle of the filter unit 2, and push the residual oil inside the filter unit 2 through the push plate 45 and the sealed one-way valve 42, so that it can complete the filtration smoothly.

[0065] At this time, water can be supplied to the tank 1 through the sliding pipe 40. After the water is discharged from the end of the vertical pipe 41, it comes into contact with the splash plate 44 and splashes, so that it can make uniform contact with the gap between the strip plate 20 and the adjusting plate 23. During this process, the vibration motor is started to generate vibration. The vibration is transmitted to the strip plate 20 and the adjusting plate 23 by pushing the outer side of the circular plate 45, further accelerating the speed of impurity shedding. Finally, the impurity mixed with water is discharged through the through pipe 11 at the bottom.

[0066] Continue to refer to Figure 3 , Figure 9 , Figure 10 and Figure 11As shown, the sliding tube 40 is also equipped with a pushing assembly 5 for driving the circular sealing plate 15 at the bottom to rotate; specifically, the pushing assembly 5 includes a contact plate 50, a receiving cavity 51, a reset spring 52, a vertical groove 53, an active plate 54, a contact plate 55, a structural groove 56, and a sealing plate 57. The contact plate 50 is provided on the inner bottom wall of the tank body 1. The sliding tube 40 has an annular receiving cavity 51 inside. The bottom of the receiving cavity 51 is connected to the bottom of the sliding tube 40. The top of the vertical tube 41 extends into the receiving cavity 51. A reset spring 52 is installed between the top of the vertical tube 41 and the inner top wall of the receiving cavity 51. When the vertical tube 41 is driven by an external force, it will be received into the receiving cavity 51. When it is no longer driven by an external force, the reset spring 52 will push the vertical tube 41 to move out of the receiving groove.

[0067] A vertical groove 53 is provided on the inner diameter of the upper through pipe 11, and an active plate 54 located in the vertical groove 53 is provided on the outer side of the sliding pipe 40. A contact plate 55 corresponding to the active plate 54 is also provided on the inner diameter of the upper annular plate 13. That is, when the circular plate 45 is pushed to indirectly drive the splash plate 44 to move downward to contact the circular sealing plate 15, the sliding pipe 40 continues to move, causing the active plate 54 to move out of the vertical groove 53 and then contact the contact plate 55. At this time, the active plate 54 will apply a pushing force to the contact plate 55, causing the contact plate 55 to drive the annular plate 13, i.e. the filter unit 2, to fall down as a whole. At this time, the corresponding telescopic plate 12 will also extend and retract synchronously. At this time, one end face of the circular sealing plate 15 contacts the abutment plate 50, causing the circular sealing plate 15 to flip. The oil residue and water remaining on the upper end face of the circular sealing plate 15 will slide down. At this time, the residue on the circular sealing plate 15 can be completely washed off by continuing to spray water through the vertical pipe 41.

[0068] During this process, the circular sealing plate 15 will come into contact with the upper pushing circular plate 45 and the splash plate 44 and drive the circular sealing plate 15 to rise, so that the vertical tube 41 is stored in the storage groove, preventing the pushing circular plate 45 from interfering with the flipping of the circular sealing plate 15, so that the circular sealing plate 15 can be flipped smoothly.

[0069] Conversely, when the cleaning is completed and the plate rises, the active plate 54 no longer applies a pushing force to the annular plate 13. The annular plate 13 returns to the corresponding height under the pushing force of the corresponding telescopic plate 12. At this time, the pushing plate 45 no longer contacts the circular sealing plate 15, causing the vertical tube 41 to move out of the storage slot under the pushing force of the reset spring 52. The circular sealing plate 15 is also driven by the corresponding torsion spring to swing back to the initial position to continue sealing the inner diameter of the annular plate 13.

[0070] The push plate 45 has a structural groove 56 corresponding to the contact plate 55, and a sealing plate 57 is hinged in the structural groove 56 by a torsion spring. During the process of pushing the circular plate 45 to descend and rise, the sealing plate 57 will come into contact with the contact plate 55, so that the sealing plate 57 flips in the structural groove 56 to avoid the contact plate 55, preventing the contact plate 55 from interfering with the movement path of the push plate 45. In addition, a flexible rubber can be installed at the hinge of the sealing plate 57 to seal it, preventing oil from spreading out through the hinge gap when the push plate 45 is pressed down.

[0071] Example 2: Refer to Figure 12 As shown, based on Embodiment 1, in order to support the tank body 1 and the bottom cover 10, a support unit 6 is provided around the tank body 1. Specifically, the support unit 6 includes a support ring 60, a support column 61, a cross 62, a top extension cylinder 63, a push cylinder 64, and a push ring 65. The support ring 60 is located on the outside of the tank body 1, and several support columns 61 are installed at the bottom of the support ring 60. The several support columns 61 can support the tank body 1 through the support ring 60.

[0072] A cross 62, connected to the lower top cover 10, is slidably installed between the support columns 61. The center of the cross 62 is circular to avoid the through pipe 11 at the bottom. A top extension cylinder 63 is also installed on the ground. The telescopic end of the top extension cylinder 63 is connected to the cross 62, which can drive the cross 62 to move up and down. The cross 62 can drive the bottom top cover 10 to descend, so that the top cover 10 can move the filter unit 2 out of the tank 1, which is convenient for the personnel to perform subsequent maintenance on the filter unit 2. After the maintenance is completed, the top cover 10 is driven by the top extension cylinder 63 to continue to seal and support the lower end of the tank 1 for subsequent filtration work. This invention can support the top cover 10 and assist the top cover 10 to move down to perform maintenance on the equipment without the aid of any external equipment, which improves the applicability of the invention.

[0073] A push cylinder 64 is also installed at the upper end of the support ring 60, and a push ring 65 sleeved on the outside of the sliding tube 40 is installed at the telescopic end of the push cylinder 64. As can be seen from the above, the push cylinder 64 can drive the push ring 65 to move up and down, so that the push ring 65 can drive the sliding tube 40 to move up and down in the through tube 11 to perform the subsequent cleaning and flushing tasks of the filter unit 2. This allows the filter unit 2 to be cleaned directly without removing it from the tank 1 during the daily cleaning of petroleum impurities, thus further improving the applicability of the present invention.

[0074] During operation: Step 1: Adjust the gap width between the adjusting plate 23 and the strip plate 20 in the filter unit 2 by driving component 3 to adapt it to the particle size and morphological characteristics of impurities in the oil to be filtered; at this time, the circular sealing plate 15 blocks the inner diameter of the bottom annular plate 13 under the action of the torsion spring, and the telescopic plate 12 is used to support the annular plate 13 so that the filter unit 2 is in the middle of the tank 1 for filtration, push the circular plate 45 to be above the filter unit 2, the one-way valve 42 is in the open state, and the whole device is in the state of waiting to be filtered.

[0075] Step 2: The oil to be filtered enters from the upper through-pipe 11, and is transported to the splash plate 44 through the sliding pipe 40, the vertical pipe 41 and the one-way valve 42. After the oil hits the splash plate 44, it is dispersed in a planar shape and flows evenly into the filter unit 2. The liquid in the oil enters the tank 1 through the gap between the strip plate 20 and the regulating plate 23, and the impurities are trapped in the filter unit 2. The filtered oil flows down the inner wall of the tank 1 and is finally discharged through the lower through-pipe 11.

[0076] Step 3: If abnormal pressure loss or impurity blockage is detected during the filtration process, the gap width between the regulating plate 23 and the strip plate 20 can be adjusted in real time through the drive component 3 to balance filtration accuracy and flow efficiency.

[0077] Step 4: Filtration is complete. Start the cleaning mode, stop the oil input, and push the cylinder 64 to drive the push ring 65 down, which in turn drives the sliding pipe 40, the vertical pipe 41 and the push circular plate 45 to descend synchronously; the one-way valve 42 is closed to prevent the liquid in the tank 1 from flowing back; the push circular plate 45 gradually enters the middle of the filter unit 2, and its outer side contacts the strip plate 20 and the adjusting plate 23.

[0078] Step 5: The sliding pipe 40 is switched to water supply mode, and water is sprayed evenly into the filter unit 2 in a splashing manner through the vertical pipe 41 and the splash plate 44; at the same time, the vibration motor on the push plate 45 is started, and the vibration is transmitted to the strip plate 20 and the adjusting plate 23 through the push plate 45, accelerating the removal of impurities from the gaps; during this process, the drive component 3 can adjust the gap between the adjusting plate 23 and the strip plate 20 to the maximum, so that impurities can be removed with the water flow.

[0079] Step 6: Push the circular plate 45 to continue to descend, causing the active plate 54 to move out of the vertical groove 53 and contact the contact plate 55, pushing the ring 65-shaped plate 13 and the filter unit 2 to descend as a whole; the bottom circular sealing plate 15 descends with the filter unit 2 until it contacts the contact plate 50, overcoming the torsion spring force and flipping open, the impurities mixed with the rinsing water in the filter unit 2 fall through the inner diameter of the bottom ring plate 13 and are discharged from the tank 1 through the lower through pipe 11.

[0080] Step 7: After cleaning, push cylinder 64 to drive sliding tube 40 and push circular plate 45 to rise; active plate 54 disengages from contact plate 55, telescopic plate 12 extends to push ring 65-shaped plate 13 and filter unit 2 to reset; circular sealing plate 15 flips and resets under the action of torsion spring, re-sealing the inner diameter of bottom ring plate 13.

[0081] The drive assembly 3 adjusts the gap between the adjusting plate 23 and the strip plate 20 back to the working state, pushes the circular plate 45 back to the top of the filter unit 2, opens the one-way valve 42, and the device returns to the state of waiting to be filtered, waiting for the next filtration cycle.

[0082] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and not restrictive.

[0083] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An on-line back-flushing wedge-shaped filter element filtering device for petroleum refining, comprising a through-going tank body (1) in an up-down direction, a top cover (10) is installed on the upper and lower ends of the tank body (1), characterized in that: The upper and lower top covers (10) are penetrated by penetrating pipes (11), and the lower top cover (10) is provided with a plurality of telescopic plates (12); The end portions of the telescopic plates (12) are jointly and detachably provided with an annular plate (13), the annular plate (13) is symmetrically provided with support shafts (14), the top portions of the support shafts (14) are also jointly provided with the annular plate (13), and the annular plate (13) is provided with a filtering unit (2) for filtering oil impurities; The annular plate (13) at the bottom is provided with rotating shafts on the inner diameter through torsional springs, and the rotating shafts are jointly provided with a circular sealing plate (15). The filtering unit (2) comprises a plurality of strip plates (20) which are detachably connected between the two annular plates (13) through bolts, and the strip plates (20) are uniformly distributed along the shafts of the annular plates (13). The strip plates (20) are elliptical in cross section. The opposite sides of the upper and lower annular plates (13) are both provided with a plurality of sliding grooves (21), and the sliding grooves (21) are both provided with sliding plates (22) which are slidably arranged in the sliding grooves (21), and the upper and lower sliding plates (22) are jointly and detachably provided with an adjusting plate (23). The adjusting plate (23) is also elliptical in cross section. The inner diameter of the tank body (1) is provided with an annular inclined frame (30), and the inclination of the inclined frame (30) corresponds to the inner diameter of the upper annular plate (13). The inclined frame (30) is internally provided with a driving assembly (3) for driving the sliding plates (22) to move, and the driving assembly (3) comprises an annular cavity (31) formed in the inner portion of the inclined frame (30), and the bottom of the annular cavity (31) is penetrated by the upper annular plate (13). The annular cavity (31) is internally provided with a threaded disc (32) which is annular in shape. The top portion of the upper sliding plate (22) penetrates into the annular cavity (31) and is threadedly connected with the bottom of the threaded disc (32).

2. The online back-flushing wedge filter element filter device for petroleum refining according to claim 1, characterized in that: The annular cavity (31) is internally provided with a driving motor (33) which is mounted through a motor base, the upper end of the threaded disc (32) is provided with an internal gear ring (34), and the telescopic end of the driving motor (33) is provided with a driving gear (35) which is engaged with the internal gear ring (34).

3. The online backflushing wedge filter element filter device for petroleum refining according to claim 1, characterized in that: The penetrating pipe (11) at the upper end is provided with a transmission unit (4) for supplying oil into the tank body (1), and the transmission unit (4) comprises a sliding pipe (40) which is slidably arranged in the penetrating pipe (11), the bottom of the sliding pipe (40) is provided with a vertical pipe (41) which is penetrated by the sliding pipe (40), and the inner diameter of the vertical pipe (41) is provided with a one-way valve (42); The bottom of the vertical pipe (41) is symmetrically provided with support plates (43), and the support plates (43) are provided with splash plates (44) which correspond to the ports of the vertical pipe (41).

4. The online back-flushing wedge filter element filter device for petroleum refining of claim 3, wherein: The outer side of the vertical pipe (41) is further provided with a pushing disc (45) which corresponds to the inner diameter of the annular plate (13), and the inner portion of the pushing disc (45) is further provided with a plurality of vibration motors.

5. The online back-flushing wedge filter element filter device for petroleum refining of claim 4, wherein: The sliding pipe (40) is further provided with a pushing assembly (5) for driving the bottom circular sealing plate (15) to rotate, the pushing assembly (5) comprises a contact plate (50) arranged on the inner bottom wall of the tank body (1), and a receiving cavity (51) in the shape of a ring is arranged in the sliding pipe (40), and the bottom of the receiving cavity (51) is in communication with the bottom of the sliding pipe (40); The top end of the vertical pipe (41) extends into the receiving cavity (51), and a reset push spring (52) is arranged between the top of the vertical pipe (41) and the inner top wall of the receiving cavity (51).

6. The online back-flushing wedge filter element filter device for petroleum refining of claim 5, wherein: A vertical groove (53) is arranged on the inner diameter of the upper end through pipe (11), and the outer side of the sliding pipe (40) is provided with a driving plate (54) located in the vertical groove (53); The inner diameter of the upper end annular plate (13) is further provided with a contact plate (55) corresponding to the driving plate (54).

7. The online back-flush wedge filter element filter device for petroleum refining of claim 6, wherein: The pushing circular plate (45) is further provided with a structure groove (56) corresponding to the contact plate (55), and the structure groove (56) is hinged with a sealing plate (57) through a torsion spring.

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