Ship basket type filtering device with corrosion-resistant coating

Abstract

The invention discloses a ship basket type filtering device with a corrosion-resistant coating, and relates to the technical field of filtering devices. A ship basket type filtering device with an anti-corrosion coating comprises a shell with an upward opening, an input pipe and an output pipe are fixedly arranged on the two sides of the shell respectively, a top cover is installed at the upper end opening of the shell, the ship basket type filtering device further comprises a basket filtering net with filtering holes in the outer wall, and the basket filtering net is arranged in the shell. Filter holes in the circumferential outer wall of the basket filter screen are obliquely formed towards the inner bottom of the basket filter screen, a lifting part for supporting the basket filter screen is arranged in the shell, and when the shell moves up and down, the lifting part enables the basket filter screen to ascend and descend up and down in the shell; the two fixing pipes are arranged on the two sides of the shell respectively, and ports of the input pipe and the output pipe are rotationally connected to ports of the two fixing pipes respectively; the filter holes can be automatically dredged, the filtering efficiency of the basket filter screen is guaranteed, and the maintenance frequency is reduced.

Description

Technical Field

[0001] This invention belongs to the field of filtration device technology, specifically, it relates to a corrosion-resistant coated marine basket filter device. Background Technology

[0002] On ships, basket filters are mainly used for coarse filtration of gaseous media such as compressed air, inert gas, or natural gas. They are installed in air compressors, gas systems, or ventilation ducts. They intercept oil mist, rust, moisture condensate, and large particulate impurities (usually larger than 50 micrometers in diameter) in the gas through metal filter screens, protecting downstream equipment (such as pneumatic valves, diesel engine starting devices, or gas engines) from clogging or wear. Their high pressure resistance and easy cleaning characteristics make them suitable for the marine environment.

[0003] However, existing basket filters have significant drawbacks in practical applications: when filtering gas, particulate matter easily clogs the basket-shaped filter screen, causing a sudden increase in pipeline pressure. To avoid system failure, operators have to frequently perform manual cleaning before the filter screen reaches its designed dust holding capacity. This maintenance method not only has an excessively short cleaning cycle but also requires interrupting gas supply, severely affecting the continuous and stable operation of ship equipment. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a corrosion-resistant coated marine basket filter device that can overcome or at least partially solve the above problems.

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows: A corrosion-resistant coated marine basket filter device includes an upward-opening outer shell, with an input pipe and an output pipe fixedly installed on both sides of the outer shell, and a top cover installed on the upper port of the outer shell. It also includes: a basket filter screen with filter holes on its outer wall, disposed inside the outer shell, wherein the filter holes on the outer circumference of the basket filter screen are inclined inwards towards the bottom; a lifting part is provided inside the outer shell to support the basket filter screen, which causes the basket filter screen to move up and down within the outer shell when the outer shell moves up and down; two fixed pipes are respectively disposed on both sides of the outer shell, wherein the ports of the input pipe and the output pipe are rotatably connected to the ports of the two fixed pipes; a drain pipe is fixedly installed at the bottom of the outer shell, and a lower counterweight is threadedly connected to the lower port of the drain pipe.

[0006] Preferably, the lifting unit includes an annular frame fixedly connected to the inner wall of the outer casing, an annular plate connected to the top of the annular frame via a vibrating spring, the annular plate being longitudinally slidably mounted on the annular frame, and an annular platform resting on the annular plate being fixedly connected to the upper end of the basket filter screen.

[0007] Preferably, a cylindrical cover extending into the outer shell is fixedly installed on the top cover. An upper counterweight is slidably installed longitudinally inside the cylindrical cover. A support plate is fixedly connected to the lower end of the cylindrical cover. An elastic element is installed between the upper counterweight and the support plate. A vertical shaft extending into the outer shell is fixedly connected to the bottom of the upper counterweight. A ring located inside the port of the basket filter screen is fixedly connected to the lower end of the vertical shaft through a portal frame. An annular wiping material is fixedly connected to the outer wall of the ring.

[0008] Furthermore, the annular wiping material is an annular rubber tube. Before expansion, the annular wiping material will have a gap with the inner wall of the basket filter screen. A ring of brushes is fixedly installed on the outer wall of the annular wiping material. The upper counterweight is provided with an air supply part for supplying air to the annular wiping material.

[0009] Furthermore, the air supply unit includes an intake pipe and an exhaust pipe fixedly connected to an elastic element. The elastic element is a telescopic airbag. A one-way valve is fixedly installed inside both the intake pipe and the exhaust pipe. The end of the exhaust pipe extends into the annular wiping material. A thin tube communicating with the outer wall of the annular wiping material is fixedly connected to it. The diameter of the thin tube is smaller than the diameter of the exhaust pipe.

[0010] Furthermore, the outer casing is provided with an annular outer tube surrounding the basket filter screen, and the outer wall of the annular outer tube is provided with an air jet nozzle that slopes towards the bottom of the basket filter screen. The annular outer tube is located above the annular wiping material, and the annular outer tube is connected to the thin tube through a connecting part.

[0011] Furthermore, the connecting part includes an L-shaped frame fixedly connected to the portal frame, a J-shaped frame fixedly connected to the annular outer tube, a sleeve fixedly connected to the upper end of the J-shaped frame, the lower end of the L-shaped frame inserted into the sleeve, the thin tube located inside the L-shaped frame and extending into the sleeve, an inner tube aligned with the thin tube fixedly installed inside the sleeve, and the output end of the inner tube extending into the annular outer tube.

[0012] Preferably, a support column is fixedly connected to the bottom of the basket filter screen, a base plate is slidably mounted on the support column, a return spring is installed between the base plate and the bottom of the basket filter screen, a dredging rod is fixedly connected to the top of the base plate toward the filter holes at the bottom of the basket filter screen, and a linkage part for driving the base plate to rise and fall is provided at the bottom of the outer shell.

[0013] Furthermore, the linkage includes a horizontal shaft rotatably connected to the bottom of the housing, with a cam fixedly mounted on the outer surface of the horizontal shaft and fitting against the bottom of the base plate. One end of the horizontal shaft is fixedly connected to a driven gear, and an arc-shaped rack that meshes with the driven gear is fixedly connected to the fixed tube.

[0014] Furthermore, a first valve and a second valve are fixedly installed on the input pipe and the output pipe, respectively. A disc-shaped filter screen is rotatably installed inside the input pipe via a rotating rod. An offset pipe is fixedly connected between the input pipe and the output pipe. A third valve is fixedly installed on the offset pipe. The handle shafts of the first valve and the second valve are connected by two transmission gears. The rotating rod is connected to the handle shaft of the first valve via a chain drive assembly.

[0015] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: 1. The present invention uses the up-and-down undulating hull to cause the basket filter screen to shake up and down inside the outer shell, thereby shaking off some of the foreign objects blocking the filter holes to the bottom of the basket filter screen, thus completing the automatic unblocking of the filter holes, ensuring the filtration efficiency of the basket filter screen and reducing the frequency of maintenance.

[0016] 2. The present invention uses the undulating hull to make the upper counterweight slide up and down inside the cylindrical cover, and the ring will drive the annular wiping material on the outer wall to move up and down inside the basket filter screen. In this way, the annular wiping material can wipe the inner wall of the basket filter screen, so that some of the particles on the inner wall of the basket filter screen are wiped away. With the up and down shaking of the basket filter screen, the good permeability of the filter pores on the basket filter screen can be maintained, further reducing the frequency of manual cleaning of the basket filter screen.

[0017] 3. In this invention, the downward-moving upper counterweight compresses the elastic element, causing the annular wiping material to have its outer brush adhere to the inner wall of the basket filter. Thus, the downward-moving annular wiping material cleans the particles from the inner wall of the basket filter using the outer brush. When the upper counterweight moves upward, the outer brush of the annular wiping material no longer contacts the inner wall of the basket filter, making it less likely for the upward-moving annular wiping material to return the downward-swept particles to their original position, thereby significantly improving the particle cleaning effect.

[0018] 4. This invention uses a thin tube to deliver the exhaust air to the inner tube, then into the annular outer tube, and finally out through the jet nozzle. The jet nozzle, which moves downward with the annular outer tube, sprays the airflow onto the outer wall of the basket filter, thereby achieving backflushing cleaning of the filter holes. Combined with the brush on the outer wall of the annular wiping material, the filter holes can be automatically unblocked more efficiently, further ensuring the filtration efficiency of the basket filter.

[0019] 5. When the hull sways left and right, the lower counterweight causes the basket filter and the upper counterweight to exert a force similar to the up-and-down movement of the hull. The basket filter and the upper counterweight can also slide up and down inside the outer shell and cylindrical cover, and the basket filter can also be automatically unblocked. If the hull continues to move up and down, the unblocking effect of the basket filter will be even better.

[0020] 6. In this invention, during the reciprocating swing of the outer shell following the hull, the bottom plate will intermittently insert the unblocking rod into the filter hole at the bottom of the basket filter, so that the filter hole at the bottom of the basket filter can also remain unobstructed, reducing the airflow resistance in the air supply pipe. At this time, when the basket filter shakes up and down inside the outer shell, the bottom plate will also hit the bottom of the basket filter, making it easier for particles in the inner wall and filter hole of the basket filter to fall off.

[0021] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0022] In the attached diagram: Figure 1 This is a three-dimensional structural diagram of a corrosion-resistant coated marine basket filter device proposed in this invention; Figure 2 This is a partial structural diagram of a corrosion-resistant coated marine basket filter device proposed in this invention. Figure 1 ; Figure 3 This is a partial structural diagram of a corrosion-resistant coated marine basket filter device proposed in this invention. Figure 2 ; Figure 4 This is an isometric cross-sectional view of a corrosion-resistant coated marine basket filter device proposed in this invention. Figure 5 This is a front sectional view of a corrosion-resistant coated marine basket filter device proposed in this invention. Figure 6 This invention proposes a corrosion-resistant coated marine basket filter device. Figure 5 Schematic diagram of a local structure in the middle; Figure 7 This is a schematic diagram of the basket filter structure of a corrosion-resistant coated marine basket filter device proposed in this invention; Figure 8 This invention proposes a corrosion-resistant coated marine basket filter device. Figure 6 Schematic diagram of a local structure in the middle; Figure 9 This invention proposes a corrosion-resistant coated marine basket filter device. Figure 6 Schematic diagram of part A in the middle; Figure 10 This invention proposes a corrosion-resistant coated marine basket filter device. Figure 5 Schematic diagram of part B in the middle section.

[0023] In the diagram: 1. Outer shell; 2. Inlet pipe; 3. Outlet pipe; 4. Top cover; 5. Basket filter; 6. Circular frame; 7. Filter holes; 8. Circular platform; 9. Vibrating spring; 10. Circular plate; 11. Cylindrical cover; 12. Upper counterweight; 13. End cap; 14. Elastic element; 15. Portal frame; 16. Ring; 17. Circular wiping material; 18. Support plate; 19. Inlet pipe; 20. Return spring; 21. Exhaust pipe; 22. Thin tube; 23. L-shaped frame; 24. Circular outer tube; 25. Air nozzle; 26. Inner tube; 27. J-shaped frame; 28. Sleeve; 29. ​​Vertical shaft; 30. Fixed tube; 31. Base plate; 32. Unclogging rod; 33. Horizontal shaft; 34. Cam; 35. Driven gear; 36. Arc rack; 37. Lower counterweight; 38. Sewage pipe; 39. Rotating rod; 40. Disc filter screen; 41. First valve; 42. Offset tube; 43. Second valve; 44. Third valve; 45. Transmission gear; 46. Chain drive assembly; 47. Support column. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0025] Example 1: Refer to Figures 1-10 A corrosion-resistant coated marine basket filter device includes an upward-opening outer shell 1, with an input pipe 2 and an output pipe 3 fixedly installed on both sides of the outer shell 1. The outer walls of the outer shell 1, the input pipe 2, and the output pipe 3 are all coated with a corrosion-resistant coating. A top cover 4 is installed at the upper port of the outer shell 1 by screws. The device also includes a basket filter screen 5 with filter holes 7 on its outer wall, which is installed inside the outer shell 1. The filter holes 7 on the outer circumference of the basket filter screen 5 are inclined towards the bottom inside. The upper port of the basket filter screen 5 has an inclined surface. A lifting part is provided inside the outer shell 1 to support the basket filter screen 5. When the outer shell 1 moves up and down, the lifting part will cause the basket filter screen 5 to move up and down inside the outer shell 1. Two fixed pipes 30 are respectively installed on both sides of the outer shell 1. The ports of the input pipe 2 and the output pipe 3 are rotatably connected to the ports of the two fixed pipes 30. A drain pipe 38 is fixedly installed at the bottom of the outer shell 1, and a lower counterweight 37 is threadedly connected to the lower port of the drain pipe 38.

[0026] Specifically, during installation, the two fixing pipes 30 are respectively fixed to two pipes used for conveying gas. In use, the gas needs to enter through the inlet pipe 2, then pass through the outer casing 1, and after being filtered by the basket filter screen 5, it exits through the outlet pipe 3. When the hull rises and falls, due to the lifting mechanism, the basket filter screen 5 can shake up and down inside the outer casing 1, thus shaking off some of the foreign matter blocking the filter holes 7 to the bottom of the basket filter screen 5, thereby automatically clearing the filter holes 7, ensuring the filtration efficiency of the basket filter screen 5, and reducing maintenance frequency. When the hull stops rising and falling or the rising and falling amplitude is significantly reduced, for example, when the rising and falling amplitude is less than 30cm, the basket filter screen 5... It will not shake up and down inside the outer shell 1. When the hull swings left and right, due to the action of the lower counterweight 37, the outer shell 1 will drive the input pipe 2 and output pipe 3 on both sides to rotate back and forth on the fixed pipe 30. The basket filter 5 inside the outer shell 1 will swing synchronously, so that the basket filter 5 can be subjected to intermittent centrifugal force. In other words, the basket filter 5 can also achieve a force similar to the up and down movement of the hull. The basket filter 5 can also slide up and down inside the outer shell 1. The basket filter 5 can also be automatically unblocked. At this time, if the hull still moves up and down, the unblocking effect of the basket filter 5 will be better, and the filter holes 7 inclined to the bottom of the basket filter 5 will be more easily unblocked.

[0027] The input pipe 2 and output pipe 3 are respectively fixedly installed with a first valve 41 and a second valve 43. A disc filter screen 40 is rotatably installed in the input pipe 2 through a rotating rod 39. An offset pipe 42 is fixedly connected between the input pipe 2 and the output pipe 3. A third valve 44 is fixedly installed on the offset pipe 42. The handle shafts of the first valve 41 and the second valve 43 are connected by two transmission gears 45. The rotating rod 39 is connected to the handle shaft of the first valve 41 through a chain drive assembly 46. The chain drive assembly 46 mainly consists of two sprockets and a matching chain. The rotating handles of the first valve 41, the second valve 43 and the third valve 44 are all equipped with rotating shafts for rotating valve cores.

[0028] When it is necessary to clean the particles stored in the basket filter 5, turn and close the first valve 41 and the second valve 43. The rotation of the first valve 41 will drive the third valve 44 to rotate and open through the meshing transmission gear 45. The rotation of the first valve 41 will also drive the rotating rod 39 to rotate through the chain drive assembly 46. The rotating rod 39 will drive the disc filter 40 to rotate 90° until the axis of the disc filter 40 is collinear with the axis of the input pipe 2. At this time, the gas entering the input pipe 2 will be temporarily filtered by the disc filter 40, and the airflow entering the input pipe 2 will enter the output pipe 3 through the bias pipe 42 without passing through the outer casing 1. Thus, when cleaning the basket filter 5, the airflow in the pipeline can be kept flowing, reducing the impact of downtime on the equipment. After the basket filter 5 has been replaced and cleaned, the first valve 41 and the second valve 43 can be reversed and reset.

[0029] Example 2: Refer to Figures 4-9 A corrosion-resistant coated marine basket filter device, which is basically the same as that in Example 1, but further includes the following: The aforementioned lifting unit includes an annular frame 6 fixedly connected to the inner wall of the outer casing 1. An annular plate 10 is connected to the top of the annular frame 6 via a vibrating spring 9. The annular plate 10 is longitudinally slidably mounted on the annular frame 6. An annular platform 8 resting on the annular plate 10 is fixedly connected to the upper end of the basket filter screen 5.

[0030] Specifically, when the hull rises and falls, the basket filter 5 can shake up and down inside the outer shell 1, thus shaking off some of the foreign objects blocking the filter holes 7 to the bottom of the basket filter 5, thereby completing the automatic unblocking of the filter holes 7, ensuring the filtration efficiency of the basket filter 5, and reducing the frequency of maintenance. When the hull stops rising and falling or the amplitude of the rise and fall is significantly reduced, such as when the amplitude of the rise and fall is less than 30cm, the inertial force of the basket filter 5 rising and falling cannot compress the shaking spring 9, and the basket filter 5 will not shake up and down inside the outer shell 1. The shaking spring 9 will cause the basket filter 5 to move upward and reset, and will stop moving or move up and down slightly with the outer shell 1.

[0031] In practice, in order to maintain a good connection strength between the annular platform 8 and the annular plate 10, magnets that attract each other are fixedly installed on the contact surfaces of the annular platform 8 and the annular plate 10.

[0032] Example 3: Reference Figures 4-9 A corrosion-resistant coated marine basket filter device, which is basically the same as Example 2, but further includes the following: A cylindrical cover 11 is fixedly installed on the top cover 4, penetrating into the outer shell 1. The cylindrical cover 11 has a port, and an end cap 13 is threaded onto the port. When it is necessary to manually unclog the basket filter 5, the end cap 13 can be opened to manually press down the upper counterweight 12. The upper counterweight 12 is longitudinally slidably installed inside the cylindrical cover 11. A support plate 18 is fixedly connected to the lower port of the cylindrical cover 11. An elastic element 14 is installed between the upper counterweight 12 and the support plate 18. A vertical shaft 29 extending into the outer shell 1 is fixedly connected to the bottom of the upper counterweight 12. The lower end of the vertical shaft 29 is fixedly connected to a ring 16 located inside the upper port of the basket filter 5 through a portal frame 15. An annular wiping material 17 is fixedly connected to the outer wall of the ring 16. The upper ends of the ring 16 and the annular wiping material 17 are parallel to the upper port of the basket filter 5 and are elliptical in shape.

[0033] Specifically, when the outer shell 1 moves up and down significantly with the hull (when the amplitude of the fluctuation is greater than 30cm), the upper counterweight 12 will slide up and down inside the cylindrical cover 11. When the upper counterweight 12 slides down, it will drive the vertical shaft 29 to move up and down. The vertical shaft 29 will drive the ring 16 to move up and down inside the basket filter 5 through the gantry frame 15. The ring 16 will drive the annular wiping material 17 on the outer wall to move up and down inside the basket filter 5. In this way, the annular wiping material 17 can wipe the inner wall of the basket filter 5, so that some of the particles on the inner wall of the basket filter 5 are wiped away. With the basket filter 5 shaking up and down, the good permeability of the filter holes 7 on the basket filter 5 can be maintained, further reducing the frequency of manually clearing the basket filter 5.

[0034] The aforementioned annular wiping material 17 is an annular rubber tube and is elastic. Before expansion, the annular wiping material 17 will have a gap with the inner wall of the basket filter screen 5. A ring of brushes is fixedly installed on the outer wall of the annular wiping material 17. After the annular wiping material 17 expands, the brushes on the outer wall of the annular wiping material 17 will adhere to the inner wall of the basket filter screen 5. The upper counterweight 12 is provided with an air supply part for supplying air to the annular wiping material 17. The air supply part includes an air intake pipe 19 and an exhaust pipe 21 fixedly connected to the elastic member 14. The elastic member 14 is a telescopic airbag. One-way valves are fixedly installed in both the air intake pipe 19 and the exhaust pipe 21. The end of the exhaust pipe 21 extends into the annular wiping material 17. A thin tube 22 is fixedly connected to the outer wall of the annular wiping material 17 and communicates with it. The diameter of the thin tube 22 is smaller than the diameter of the exhaust pipe 21. For example, when the diameter of the thin tube 22 is 5mm, the diameter of the exhaust pipe 21 will be between 6mm and 9mm.

[0035] Specifically, when the upper counterweight 12 moves downward, it compresses the elastic element 14. The elastic element 14 then blows air onto the annular wiping material 17 through the exhaust pipe 21. The annular wiping material 17 then expels air through the thin tube 22. Since the diameter of the thin tube 22 is smaller than that of the exhaust pipe 21, the thin tube 22 cannot expel the air inside the annular wiping material 17 in time. As a result, the annular wiping material 17 expands under the excess air pressure, causing the brush on its outer wall to adhere to the inner wall of the basket filter 5. Thus, the downward-moving annular wiping material 17 passes through the brush on its outer wall... The brush cleans the particles on the inner wall of the basket filter 5. When the upper counterweight 12 moves upward, the annular wiping object 17 also moves upward, and the elastic element 14 is stretched. The elastic element 14 draws in air through the suction pipe 19, and the exhaust pipe 21 stops supplying air to the annular wiping object 17. When the pressure inside the annular wiping object 17 decreases rapidly, it elastically shrinks and returns to its original position. The brush on its outer wall no longer contacts the inner wall of the basket filter 5. Therefore, the upward-moving annular wiping object 17 is less likely to reset the downward-wiped particles, thus significantly improving the cleaning effect of particles.

[0036] Example 4: Reference Figures 4-9 A corrosion-resistant coated marine basket filter device, basically the same as in Example 3, but further: The outer casing 1 is provided with an annular outer tube 24 surrounding the basket filter 5. The upper end of the annular outer tube 24 is parallel to the upper port of the basket filter 5 and is elliptical in shape. The outer wall of the annular outer tube 24 is provided with a jet nozzle 25 that is inclined towards the bottom of the basket filter 5. The annular outer tube 24 is located above the annular wiping material 17 and is connected to the thin tube 22 through a connecting part. The connecting part includes an L-shaped frame 23 fixedly connected to the gantry frame 15. A J-shaped frame 27 is fixedly connected to the annular outer tube 24. A sleeve 28 is fixedly connected to the upper end of the J-shaped frame 27. The lower end of the L-shaped frame 23 is inserted into the sleeve 28. The thin tube 22 is located in the L-shaped frame 23 and extends into the sleeve 28. An inner tube 26 aligned with the thin tube 22 is fixedly provided in the sleeve 28. The output end of the inner tube 26 extends into the annular outer tube 24.

[0037] Specifically, when the upper counterweight 12 moves downward, it compresses the elastic element 14. The elastic element 14 then blows air onto the annular wiping material 17 through the exhaust pipe 21. The annular wiping material 17 then expels air through the thin tube 22. Since the diameter of the thin tube 22 is smaller than that of the exhaust pipe 21, the thin tube 22 cannot expel the air inside the annular wiping material 17 in time. As a result, the annular wiping material 17 expands under the excess air pressure, causing the brush on its outer wall to adhere to the inner wall of the basket filter 5. Thus, the downward-moving annular wiping material 17 passes through the brush on its outer wall... The brush cleans the particles on the inner wall of the basket filter 5. When the upper counterweight 12 moves upward, the annular wiping object 17 also moves upward, and the elastic element 14 is stretched. The elastic element 14 draws in air through the suction pipe 19, and the exhaust pipe 21 stops supplying air to the annular wiping object 17. When the pressure inside the annular wiping object 17 decreases rapidly, it elastically shrinks and returns to its original position. The brush on its outer wall no longer contacts the inner wall of the basket filter 5. Therefore, the upward-moving annular wiping object 17 is less likely to reset the downward-wiped particles, thus significantly improving the cleaning effect of particles.

[0038] As the gantry frame 15 moves up and down, it also drives the L-shaped frame 23 to move up and down. The L-shaped frame 23, in turn, drives the J-shaped frame 27 to move up and down via the sleeve 28. The J-shaped frame 27 then drives the annular outer tube 24 to move up and down along the outer wall of the basket filter 5. During the downward movement, the thin tube 22 delivers the exhausted air to the inner tube 26, which then enters the annular outer tube 24 and finally exits through the nozzle 25. The nozzle 25, which moves downward along with the annular outer tube 24, sprays the airflow onto the outer wall of the basket filter 5. This allows for backflushing and cleaning of the filter holes 7 (in practice, the backflushing air pressure needs to be greater than the air pressure in the input pipe 2; if it is less than the air pressure in the input pipe 2, the annular wiping material 17 and the annular outer pipe 24 can be positioned at opposite ends of the filter holes 7, thus the annular wiping material 17 can block the airflow entering the filter holes 7 and reduce the impact on the backflushing airflow). In conjunction with the brush on the outer wall of the annular wiping material 17, the filter holes 7 can be automatically unblocked more efficiently, further ensuring the filtration efficiency of the basket filter screen 5.

[0039] In practice, when cleaning the basket filter 5, opening the top cover 4 upwards will also cause the end of the L-shaped frame 23 to be pulled out from the sleeve 28. When the top cover 4 is reset, the L-shaped frame 23 can be inserted back into the sleeve 28. In order to improve the connection strength between the L-shaped frame 23 and the sleeve 28, in practice, sealing rings and mutually attractive magnets can be installed on the inner wall of the sleeve 28 and the outer wall of the L-shaped frame 23.

[0040] Example 5: Refer to Figures 5-7 as well as Figure 10 A corrosion-resistant coated marine basket filter device, basically the same as in Example 4, but further: The bottom of the basket filter 5 is fixedly connected to a support column 47. A base plate 31 is longitudinally slidably installed on the support column 47. A return spring 20 is installed between the base plate 31 and the bottom of the basket filter 5. A clearing rod 32 is fixedly connected to the top of the base plate 31, facing the filter hole 7 at the bottom of the basket filter 5. The diameter of the clearing rod 32 is smaller than the diameter of the filter hole 7. The bottom of the outer shell 1 is provided with a linkage part for driving the base plate 31 to rise and fall. The linkage part includes a horizontal shaft 33 rotatably connected to the bottom of the outer shell 1. A cam 34 is fixedly installed on the outer surface of the horizontal shaft 33 and fits against the bottom of the base plate 31. A driven gear 35 is fixedly connected to one end of the horizontal shaft 33. An arc-shaped rack 36 that meshes with the driven gear 35 is fixedly connected to the fixed tube 30.

[0041] Specifically, during the reciprocating swing of the outer shell 1 following the hull, the driven gear 35 will be driven to roll back and forth along the arc-shaped rack 36. The driven gear 35 will then rotate back and forth, and through the horizontal shaft 33, it will drive the cam 34 to rotate back and forth at the bottom of the base plate 31. The base plate 31 will then rise and fall under the action of the cam 34 and the return spring 20. The base plate 31 will then indirectly insert the unblocking rod 32 into the filter hole 7 at the bottom of the basket filter 5, so that the filter hole 7 at the bottom of the basket filter 5 can also remain unobstructed, reducing the airflow resistance in the air supply pipe. At this time, if the basket filter 5 shakes up and down inside the outer shell 1, the base plate 31 will also hit the bottom of the basket filter 5, making it easier for particles in the inner wall of the basket filter 5 and the filter hole 7 to fall off.

[0042] In use, the gas enters through the inlet pipe 2, passes through the outer shell 1, and is discharged through the outlet pipe 3 after being filtered by the basket filter screen 5. When the hull moves up and down, the basket filter screen 5 can shake up and down inside the outer shell 1, thus shaking off some of the foreign objects blocking the filter holes 7 to the bottom of the inner part of the basket filter screen 5, thereby completing the automatic unblocking of the filter holes 7, ensuring the filtration efficiency of the basket filter screen 5, and reducing the frequency of maintenance. When the hull stops moving up and down or the amplitude of the movement is significantly reduced, for example, when the amplitude of the movement is less than 30cm, the inertial force of the basket filter screen 5 moving up and down cannot compress the shaking spring 9, and the basket filter screen 5 will not shake up and down inside the outer shell 1. The shaking spring 9 will cause the basket filter screen 5 to move upward and reset, and will stop moving or move up and down slightly with the outer shell 1.

[0043] When the outer shell 1 moves up and down significantly with the hull (when the amplitude of the fluctuation is greater than 30cm), the upper counterweight 12 will slide up and down inside the cylindrical cover 11. When the upper counterweight 12 slides down, it will drive the vertical shaft 29 to move up and down. The vertical shaft 29 will drive the ring 16 to move up and down inside the basket filter 5 through the gantry frame 15. The ring 16 will drive the annular wiping material 17 on the outer wall to move up and down inside the basket filter 5. In this way, the annular wiping material 17 can wipe the inner wall of the basket filter 5, so that some of the particles on the inner wall of the basket filter 5 can be wiped away. With the basket filter 5 shaking up and down, the good permeability of the filter holes 7 on the basket filter 5 can be maintained, further reducing the frequency of manually clearing the basket filter 5.

[0044] When the upper counterweight 12 moves downward, it compresses the elastic element 14, which in turn blows air onto the annular wiping material 17 through the exhaust pipe 21. The annular wiping material 17 then expels air through the thin tube 22. Since the diameter of the thin tube 22 is smaller than that of the exhaust pipe 21, the thin tube 22 cannot expel the air inside the annular wiping material 17 in time. As a result, the annular wiping material 17 expands under the excess air pressure, causing the brush on its outer wall to adhere to the inner wall of the basket filter 5. Thus, the downward-moving annular wiping material 17 cleans the air through the brush on its outer wall. When the upper counterweight 12 moves upward, the annular wiping device 17 also moves upward, and the elastic element 14 is stretched. The elastic element 14 draws in air through the suction pipe 19, and the exhaust pipe 21 stops supplying air to the annular wiping device 17. When the pressure inside the annular wiping device 17 decreases rapidly, it elastically shrinks and returns to its original position. The brush on its outer wall no longer contacts the inner wall of the basket filter 5. Therefore, the upward-moving annular wiping device 17 is less likely to reset the downward-wiped particles, thus significantly improving the cleaning effect of particles.

[0045] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A corrosion-resistant coated marine basket filter device, comprising an open-topped outer shell (1), an inlet pipe (2) and an outlet pipe (3) fixedly disposed on both sides of the outer shell (1), and a top cover (4) installed on the upper port of the outer shell (1), characterized in that, Also includes: A basket filter screen (5) with filter holes (7) on its outer wall is disposed inside the outer casing (1). The filter holes (7) on the outer circumference of the basket filter (5) are inclined towards the bottom inside. The outer shell (1) is provided with a lifting part to support the basket filter (5). When the outer shell (1) moves up and down, the lifting part will cause the basket filter (5) to move up and down inside the outer shell (1). Two fixing tubes (30) are respectively disposed on both sides of the outer casing (1). The ports of the input pipe (2) and the output pipe (3) are rotatably connected to the ports of two fixed pipes (30), and a drain pipe (38) is fixedly installed at the bottom of the outer shell (1). A lower counterweight (37) is threadedly connected to the lower port of the drain pipe (38).

2. The corrosion-resistant coated marine basket filter device according to claim 1, characterized in that, The lifting unit includes an annular frame (6) fixedly connected to the inner wall of the outer shell (1). The top of the annular frame (6) is connected to an annular plate (10) via a shaking spring (9). The annular plate (10) is longitudinally slidably mounted on the annular frame (6). The upper port of the basket filter (5) is fixedly connected to an annular platform (8) resting on the annular plate (10).

3. The corrosion-resistant coated marine basket filter device according to claim 1, characterized in that, A cylindrical cover (11) is fixedly installed on the top cover (4) and extends into the outer shell (1). An upper counterweight (12) is slidably installed in the cylindrical cover (11). A support plate (18) is fixedly connected to the lower end of the cylindrical cover (11). An elastic element (14) is installed between the upper counterweight (12) and the support plate (18). A vertical shaft (29) extending into the outer shell (1) is fixedly connected to the bottom of the upper counterweight (12). A ring (16) located in the upper port of the basket filter (5) is fixedly connected to the lower end of the vertical shaft (29) through a portal frame (15). An annular wiping material (17) is fixedly connected to the outer wall of the ring (16).

4. A corrosion-resistant coated marine basket filter device according to claim 3, characterized in that, The annular wiping material (17) is an annular rubber tube. Before expansion, the annular wiping material (17) will have a gap with the inner wall of the basket filter (5). A ring of brushes is fixedly provided on the outer wall of the annular wiping material (17). The upper counterweight (12) is provided with an air supply part for supplying air to the annular wiping material (17).

5. A corrosion-resistant coated marine basket filter device according to claim 4, characterized in that, The air supply unit includes an air intake pipe (19) and an exhaust pipe (21) fixedly connected to an elastic element (14). The elastic element (14) is a telescopic airbag. One-way valves are fixedly installed in both the air intake pipe (19) and the exhaust pipe (21). The end of the exhaust pipe (21) extends into the annular wiping material (17). A thin tube (22) communicating with the outer wall of the annular wiping material (17) is fixedly connected to it. The diameter of the thin tube (22) is smaller than the diameter of the exhaust pipe (21).

6. A corrosion-resistant coated marine basket filter device according to claim 5, characterized in that, The outer casing (1) is provided with an annular outer tube (24) surrounding the basket filter (5). The outer wall of the annular outer tube (24) is provided with a jet nozzle (25) that is inclined towards the bottom of the basket filter (5). The annular outer tube (24) is located above the annular wiping material (17), and the annular outer tube (24) is connected to the thin tube (22) through a connecting part.

7. A corrosion-resistant coated marine basket filter device according to claim 6, characterized in that, The connecting part includes an L-shaped frame (23) fixedly connected to the portal frame (15), a J-shaped frame (27) fixedly connected to the annular outer tube (24), a sleeve (28) fixedly connected to the upper end of the J-shaped frame (27), the lower end of the L-shaped frame (23) inserted into the sleeve (28), the thin tube (22) located in the L-shaped frame (23) and extending into the sleeve (28), and an inner tube (26) fixedly arranged inside the sleeve (28) and aligned with the thin tube (22), the output end of the inner tube (26) extending into the annular outer tube (24).

8. A corrosion-resistant coated marine basket filter device according to claim 1, characterized in that, The bottom of the basket filter (5) is fixedly connected to a support column (47), and a base plate (31) is longitudinally slidably installed on the support column (47). A reset spring (20) is installed between the base plate (31) and the bottom of the basket filter (5). A dredging rod (32) facing the bottom filter hole (7) of the basket filter (5) is fixedly connected to the top of the base plate (31). The bottom of the outer shell (1) is provided with a linkage part for driving the base plate (31) to rise and fall.

9. A corrosion-resistant coated marine basket filter device according to claim 8, characterized in that, The linkage includes a horizontal shaft (33) rotatably connected to the bottom of the outer casing (1). The outer surface of the horizontal shaft (33) is fixedly mounted with a cam (34) that fits against the bottom of the base plate (31). One end of the horizontal shaft (33) is fixedly connected to a driven gear (35). An arc-shaped rack (36) that meshes with the driven gear (35) is fixedly connected to the fixed tube (30).

10. A corrosion-resistant coated marine basket filter device according to claim 9, characterized in that, A first valve (41) and a second valve (43) are fixedly installed on the input pipe (2) and the output pipe (3), respectively. A disc-shaped filter screen (40) is rotatably installed in the input pipe (2) through a rotating rod (39). An offset pipe (42) is fixedly connected between the input pipe (2) and the output pipe (3). A third valve (44) is fixedly installed on the offset pipe (42). The handle shafts of the first valve (41) and the second valve (43) are connected by two transmission gears (45). The rotating rod (39) is connected to the handle shaft of the first valve (41) through a chain drive assembly (46).

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