Anti-fouling circulating fuel filter

Abstract

The application discloses a circulating filter fuel filter capable of preventing siltation, and relates to the technical field of filtration. The filter fuel filter comprises a cylinder body, a siltation-preventing device arranged in the cylinder body, and an oil inlet assembly fixedly connected to the top of the siltation-preventing device. The siltation-preventing device comprises a cleaning assembly, a filtering assembly and a sedimentation assembly. The compression assembly and the cleaning assembly work cooperatively. When the handle is pulled, the movable frame drives the moving rod and the compression plate to move, the second tension spring is stretched, the compression plate compresses the impurities in the collecting box during the movement, the moving ring of the cleaning assembly moves under the action of the guide rod and the first tension spring, the second telescopic rod makes the cleaning block contact and move on the inner wall of the filtering assembly under the action of the thrust spring, the inner wall of the filtering assembly is cleaned, the impurities are prevented from siltation, the one-way valve pipe structure ensures the one-way flow of the fuel, and the impurities are prevented from being redistributed and silted again.

Description

Technical Field

[0001] This invention relates to the field of filtration technology, specifically to a circulating fuel filter that prevents sediment buildup. Background Technology

[0002] Traditional fuel filters gradually develop buildup problems during operation. As usage time increases, impurities in the fuel accumulate inside the filter, leading to decreased filtration efficiency and increased flow resistance. For example, when impurities accumulate extensively on the filter element, they obstruct normal fuel flow, making it difficult for the engine to receive sufficient fuel. This results in reduced engine performance, such as decreased power and increased fuel consumption. Furthermore, severe buildup can even cause the filter to become completely clogged, preventing the engine from functioning properly. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this invention provides a circulating fuel filter that prevents sediment buildup, thus solving the problem of decreased filtration efficiency.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the present invention provides the following technical solution: a circulating fuel filter with anti-accumulation properties, comprising a cylindrical body, wherein an anti-accumulation device is disposed inside the cylindrical body, and an oil inlet assembly is fixedly connected above the anti-accumulation device; the anti-accumulation device includes a cleaning assembly, a filtering assembly, and a settling assembly, wherein a compression assembly is fixedly connected to the middle of the outer wall above the settling assembly, and the two assemblies work together to ensure that impurities in the fuel can be effectively separated and collected; a collection assembly is fixedly connected to the middle of the outer wall below the settling assembly; the settling assembly includes a lower sealing cover, wherein a shaped guide plate is fixedly connected to the outer wall above the lower sealing cover, and a wave guide groove is formed on the outer wall above the lower sealing cover. This design can further optimize the flow path of the fuel and reduce the accumulation of impurities inside the filter; a second sealing plate is fixedly connected to the middle of the outer wall above the lower sealing cover to ensure the sealing performance of the entire anti-accumulation device.

[0007] Preferably, the irregularly shaped guide plates are arranged in a central annular array below the sealing covers, the wave guide grooves are located between the irregularly shaped guide plates, and the second sealing plate is located between the settling assembly and the compression assembly. This can effectively control the flow direction and position of the material, while ensuring stable operation of the equipment and extending its service life.

[0008] Preferably, the compression assembly includes an isolation cover, a movable rod slidably connected to the top of the isolation cover, a compression plate fixedly connected to the end of the movable rod near the settling assembly and extending into the interior of the isolation cover, a second tension spring sleeved on the outer wall of the end of the movable rod near the compression plate, a movable frame fixedly connected to the end of the movable rod away from the compression plate, a bellows sleeved on the outer wall of the end of the movable rod near the movable frame to provide additional protection and sealing, a circulation outlet penetrating the top of the isolation cover to facilitate fluid entry and exit, the outer wall of the compression plate fitting against the inner wall of the isolation cover, the end of the second tension spring away from the compression plate fixedly connected to the top of the interior of the isolation cover, and the inner wall of the end of the movable rod away from the compression plate fixedly connected to the outer wall of the movable frame, ensuring the structural stability and functionality of the entire compression assembly.

[0009] Preferably, the oil inlet assembly includes a buffer cover. The outer wall of the buffer cover has an oil inlet hole circumferentially around the central axis, which is the main channel for guiding fluid into the assembly. An upper sealing cover is fixedly connected to the top of the buffer cover to ensure a closed environment inside the oil inlet assembly and prevent fluid leakage. An oil outlet is opened in the middle of the top of the buffer cover, and an oil inlet is opened on one side of the top of the upper sealing cover. A circulation inlet is opened on the other side of the upper sealing cover away from the oil inlet. This circulation inlet allows the fluid to re-enter the system for recycling after treatment. A filter plate is slidably connected to the inner wall of the oil outlet. One-way valve pipe structures are fixedly connected to the inner walls of the circulation inlet, oil outlet, and oil inlet to ensure unidirectional fluid flow and prevent reverse flow, thereby ensuring the smooth operation of the entire system.

[0010] Preferably, the one-way valve pipe structure includes a mounting plate. The inlets of the circulation inlet, outlet, and inlet are all slidably connected with anti-detachment rings. These anti-detachment rings not only ensure a secure connection at the inlets and prevent accidental detachment, but their inner walls are also fixedly connected to the outer walls of the circulation inlet, outlet, and inlet via tension springs to maintain appropriate tension, ensuring connection stability and sealing. Furthermore, tension springs are fixedly connected between the inner wall of each anti-detachment ring and the outer walls of the circulation inlet, outlet, and inlet, with the end of the tension spring furthest from the anti-detachment ring connected to the outer wall of the circulation inlet. A first telescopic rod is fixedly connected to the side of the plate away from the anti-detachment ring. A return spring is sleeved on the outer wall of the first telescopic rod, which allows the telescopic rod to extend and retract freely when subjected to external force and quickly return to its original position after the force disappears. This ensures the rapid response and stable performance of the one-way valve pipe structure. A first sealing plate is fixedly connected to the end of the mounting plate and the return spring away from the mounting plate. A blocking ring is attached to the side of the first sealing plate near the first telescopic rod. The blocking ring further prevents fluid leakage, ensuring the sealing performance of the one-way valve pipe structure under various working conditions and preventing backflow.

[0011] Preferably, the cleaning assembly includes a movable ring, with a guide rod fixedly connected to the inner wall of the movable ring. A first tension spring is sleeved on the outer wall of the guide rod. This spring provides the necessary elasticity for the entire cleaning assembly to ensure its stability and reliability during operation, and also provides a reset effect for the movable ring. A second telescopic rod is arranged around the center of the outer wall of the movable ring. A thrust spring is fixedly connected inside the second telescopic rod. The thrust spring can push the output end of the second telescopic rod to increase the fit between the cleaning block and the outer wall of the first filter cylinder. The thrust spring provides forward thrust to the telescopic rod to ensure that the cleaning block can effectively perform the cleaning work. An arc-shaped connecting plate is fixedly connected to the end of the second telescopic rod away from the thrust spring. A cleaning block is fixedly connected to the outer wall of the arc-shaped connecting plate. Multiple sets of cleaning blocks are provided. The cleaning block is the part of the entire cleaning assembly that directly contacts the surface to be cleaned. Multiple sets of cleaning blocks are provided. This design can increase the cleaning area and efficiency, and ensure the comprehensiveness and thoroughness of the cleaning work.

[0012] Preferably, the filtration assembly includes a first filter cartridge. Reinforcing strips are fixedly connected to the outer wall of the first filter cartridge. These reinforcing strips are designed to enhance the structural strength of the filter cartridge, ensuring it can withstand certain pressure without deformation during filtration. A water-absorbing layer is fixedly connected to the inner wall of the first filter cartridge. The main function of the water-absorbing layer is to absorb and trap impurities in the liquid, improving filtration efficiency. Simultaneously, the water-absorbing layer is made of an oleophobic membrane material. Modified polyvinylidene fluoride membranes or polypropylene membranes, after hydrophilic treatment, exhibit hydrophilic and oleophobic properties on their surface. A second filter cartridge is fixedly connected inside the water-absorbing layer. The second filter cartridge can further filter out tiny particles that have passed through the water-absorbing layer, ensuring a purer filtered liquid. Multiple sets of reinforcing strips are provided, thereby ensuring the continuity and reliability of the filtration process.

[0013] Preferably, the collection component includes a collection box, the inner wall of which is fixedly connected with a permanent magnet. The permanent magnet is used to attract and collect metal impurities to prevent the metal impurities collected in the collection box from escaping. The outside of the collection box is provided with a handle, which allows the user to easily pull the movable frame while the compression plate compresses all the impurities collected inside the collection box. The handle is fixedly connected to the outer wall of the movable frame, and pulling the handle can cause the movable frame to slide.

[0014] Preferably, the outer wall of the mounting plate is fixedly connected to the inner wall of the oil inlet, and the inner walls are tightly connected by a fixed connection method to ensure the stability and sealing between the two. The outer wall of the blocking ring is fixedly connected to the inner wall of the oil inlet to prevent any possible leakage or unwanted flow. The outer wall of the first sealing plate inside the oil outlet is fixedly connected to the outer wall of the filter plate. This not only ensures the stable installation of the filter plate, but also ensures the sealing effect during the filtration process, thereby improving the reliability and filtration efficiency of the entire system.

[0015] (III) Beneficial Effects

[0016] This invention provides a circulating fuel filter that prevents sediment buildup. It offers the following advantages:

[0017] (I) This anti-accumulation circulating fuel filter uses a compression component and a cleaning component working together. When the handle is pulled, the movable frame moves the moving rod and the compression plate, and the second tension spring is stretched. During the movement of the compression plate, the impurities in the collection box are compressed. At the same time, the moving ring of the cleaning component moves under the action of the guide rod and the first tension spring. The second telescopic rod moves the cleaning block to contact the inner wall of the filter component under the action of the thrust spring, thereby cleaning the inner wall of the filter component and preventing impurities from accumulating. The one-way valve pipe structure ensures that the fuel flows in one direction and prevents the fuel from flowing back and causing impurities to redistribute and accumulate.

[0018] (II) This anti-accumulation circulating fuel filter, by setting a settling component, guides the fuel with a special-shaped guide plate and a corrugated guide groove before the fuel enters the filter component, so that the fuel forms a specific flow path in the settling component. Impurities naturally settle to the lower sealing cover under the action of gravity. The unique corrugated guide groove set on the lower sealing cover can effectively prevent the guide groove from being completely blocked by large impurities, thereby reducing the burden on the subsequent filter components and extending their service life.

[0019] (III) The anti-accumulation circulating filter fuel filter uses a collection box of the collection component to collect settled impurities. A permanent magnet adsorbs metallic impurities to prevent them from mixing back into the fuel. By pulling the handle, the movable frame is driven, which in turn causes the compression plate to compress the impurities in the collection box, reducing the space occupied by the impurities and facilitating centralized processing. At the same time, the collection box can be removed to clean the impurities inside, thereby extending the service life of the device.

[0020] (iv) The anti-accumulation circulating fuel filter has a one-way valve pipe structure installed at the circulation inlet, outlet and inner wall of the inlet assembly. When the fuel flows in the forward direction, the fluid pressure pushes the first sealing plate to overcome the elastic force of the return spring and allow the fuel to pass through. When there is a backflow tendency, the return spring pushes the first sealing plate to fit against the blocking ring to prevent the fuel from flowing back and ensure that the fuel always flows along the predetermined path.

[0021] (V) The anti-accumulation circulating fuel filter adopts a multi-layer filtration structure. The first filter cartridge is reinforced with reinforcing strips to enhance the structural strength. The water-absorbing layer can effectively absorb water in the fuel and intercept some impurities. The second filter cartridge further filters out small particles. Through multi-layer filtration, the filtration efficiency and precision are improved, ensuring that the fuel entering the engine is purer and increasing the filtration effect. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the anti-sludge accumulation device of the present invention;

[0024] Figure 3 This is a schematic diagram of the oil inlet assembly of the present invention;

[0025] Figure 4 This is a schematic diagram of the compression component of the present invention;

[0026] Figure 5 This is a cross-sectional structural schematic diagram of the oil inlet assembly of the present invention;

[0027] Figure 6 This is a schematic diagram of the cleaning component of the present invention;

[0028] Figure 7 This is a cross-sectional structural schematic diagram of the compression component of the present invention;

[0029] Figure 8 This is a cross-sectional structural schematic diagram of the components collected in this invention;

[0030] Figure 9 This is a schematic diagram of the structure of the filter assembly of the present invention;

[0031] Figure 10 This is a cross-sectional structural schematic diagram of the filter component of the present invention;

[0032] Figure 11 This is a schematic diagram of the structure of invention A;

[0033] Figure 12 This is a cross-sectional schematic diagram of the one-way valve pipe structure of the present invention.

[0034] In the diagram: 1. Cylinder; 2. Oil inlet assembly; 21. Buffer cover; 22. Oil inlet hole; 23. Upper sealing cover; 24. One-way valve pipe structure; 241. Anti-detachment ring; 243. Mounting plate; 244. Return spring; 245. First telescopic rod; 246. First sealing plate; 247. Blocking ring; 25. Circulation inlet; 26. Oil outlet; 27. Filter plate; 28. Oil inlet; 3. Cleaning assembly; 31. Moving ring; 32. Guide rod; 33. Second telescopic rod; 34. Thrust spring; 35. Arc-shaped connecting plate; 36. Cleaning block; 7. First tension spring; 4. Filter assembly; 41. Reinforcing strip; 42. First filter cylinder; 43. Water absorption layer; 44. Second filter cylinder; 5. Settling assembly; 51. Lower sealing cover; 52. Irregularly shaped guide plate; 53. Corrugated guide groove; 54. Second sealing plate; 6. Compression assembly; 61. Isolation cover; 62. Moving rod; 63. Corrugated pipe; 64. Circulation outlet; 65. Movable frame; 66. Second tension spring; 67. Compression plate; 7. Collection assembly; 71. Collection box; 72. Permanent magnet; 73. Handle; 8. Anti-sludge accumulation device. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figure 1-12 This invention provides a technical solution: it includes a cylinder 1, an anti-accumulation device 8 is provided inside the cylinder 1, and an oil inlet assembly 2 is fixedly connected above the anti-accumulation device 8; the anti-accumulation device 8 includes a cleaning assembly 3, a filtering assembly 4 and a settling assembly 5, a compression assembly 6 is fixedly connected to the middle of the outer wall above the settling assembly 5, the two assemblies work together to ensure that impurities in the fuel can be effectively separated and collected, a collection assembly 7 is fixedly connected to the middle of the outer wall below the settling assembly 5; the settling assembly 5 includes a lower sealing cover 51, a shaped guide plate 52 is fixedly connected to the outer wall above the lower sealing cover 51, and a wave guide groove 53 is opened on the outer wall above the lower sealing cover 51. This design can further optimize the flow path of the fuel and reduce the accumulation of impurities inside the filter. A second sealing plate 54 is fixedly connected to the middle of the outer wall above the lower sealing cover 51 to ensure the sealing performance of the entire anti-accumulation device 8.

[0037] The sealing covers 51 below the irregular guide plate 52 are arranged in a central ring array. The wave guide groove 53 is located between the irregular guide plates 52. The second sealing plate 54 is located between the settling component 5 and the compression component 6. This can effectively control the flow direction and position of the material, while ensuring the stable operation of the equipment and extending its service life.

[0038] The compression assembly 6 includes an isolation cover 61. A movable rod 62 is slidably connected to the top of the isolation cover 61. The end of the movable rod 62 near the settling assembly 5 extends into the interior of the isolation cover 61 and is fixedly connected to a compression plate 67. A second tension spring 66 is sleeved on the outer wall of the end of the movable rod 62 near the compression plate 67. A movable frame 65 is fixedly connected to the end of the movable rod 62 away from the compression plate 67. A bellows 63 is sleeved on the outer wall of the end of the movable rod 62 near the movable frame 65 to provide additional protection and sealing. A circulation outlet 64 is connected through the top of the isolation cover 61 to facilitate the entry and exit of fluid. The outer wall of the compression plate 67 fits against the inner wall of the isolation cover 61. The end of the second tension spring 66 away from the compression plate 67 is fixedly connected to the top of the interior of the isolation cover 61. The inner wall of the end of the movable rod 62 away from the compression plate 67 is fixedly connected to the outer wall of the movable frame 65, ensuring the structural stability and functionality of the entire compression assembly 6.

[0039] The oil inlet assembly 2 includes a buffer cover 21. The outer wall of the buffer cover 21 has an oil inlet hole 22 circumferentially formed around the central axis, which is the main channel for guiding fluid into the assembly. An upper sealing cover 23 is fixedly connected to the top of the buffer cover 21 to ensure that a closed environment is formed inside the oil inlet assembly 2 to prevent fluid leakage. An oil outlet 26 is formed in the middle of the top of the buffer cover 21. An oil inlet 28 is formed on one side above the upper sealing cover 23. A circulation inlet 25 is formed on the other side of the upper sealing cover 23 away from the oil inlet 28. This circulation inlet 25 allows the fluid to re-enter the system for recycling after treatment. A filter plate 27 is slidably connected to the inner wall of the oil outlet 26. A one-way valve pipe structure 24 is fixedly connected to the inner walls of the circulation inlet 25, the oil outlet 26, and the oil inlet 28 to ensure unidirectional flow of fluid and prevent reverse flow of fluid, thereby ensuring the smooth operation of the entire system.

[0040] The one-way valve pipe structure 24 includes a mounting plate 243. Anti-detachment rings 241 are slidably connected to the inlets of the circulation inlet 25, oil outlet 26, and oil inlet 28. These anti-detachment rings 241 not only ensure a secure connection at the inlets and prevent accidental detachment, but their inner walls are also fixedly connected to the outer walls of the circulation inlet 25, oil outlet 26, and oil inlet 28 by tension springs to maintain appropriate tension, ensuring connection stability and sealing. Tension springs are also fixedly connected between the inner walls of the anti-detachment rings 241 and the outer walls of the circulation inlet 25, oil outlet 26, and oil inlet 28. A fixed connection is made to the side of the mounting plate 243 away from the anti-detachment rings 241. The first telescopic rod 245 has a return spring 244 sleeved on its outer wall. This allows the telescopic rod to extend and retract freely when subjected to external force and quickly return to its original position after the force is removed, thus ensuring the rapid response and stable performance of the one-way valve pipe structure 24. The mounting plate 243 and the end of the return spring 244 away from the mounting plate 243 are fixedly connected to a first sealing plate 246. A blocking ring 247 is attached to the side of the first sealing plate 246 near the first telescopic rod 245. The blocking ring 247 further prevents fluid leakage, ensuring the sealing performance of the one-way valve pipe structure 24 under various working conditions, and preventing backflow.

[0041] The cleaning assembly 3 includes a moving ring 31. A guide rod 32 is fixedly connected to the inner wall of the moving ring 31. A first tension spring 37 is sleeved on the outer wall of the guide rod 32. The function of this spring is to provide the necessary elasticity for the entire cleaning assembly 3 to ensure its stability and reliability during operation, and at the same time to provide a reset effect for the moving ring 31. A second telescopic rod 33 is arranged around the center axis on the outer wall of the moving ring 31. A thrust spring 34 is fixedly connected inside the second telescopic rod 33. The thrust spring 34 provides forward thrust to the second telescopic rod 33 to ensure that the cleaning block 36 can effectively perform cleaning work. An arc-shaped connecting plate 35 is fixedly connected to the end of the second telescopic rod 33 away from the thrust spring 34. A cleaning block 36 is fixedly connected to the outer wall of the arc-shaped connecting plate 35. Multiple sets of cleaning blocks 36 are provided. The cleaning block 36 is the part of the entire cleaning assembly 3 that directly contacts the surface to be cleaned. It is provided in multiple sets. This design can increase the cleaning area and efficiency, and ensure the comprehensiveness and thoroughness of the cleaning work.

[0042] The filter assembly 4 includes a first filter cartridge 42. Reinforcing strips 41 are fixedly connected to the outer wall of the first filter cartridge 42. These reinforcing strips 41 are designed to enhance the structural strength of the filter cartridge, ensuring it can withstand certain pressure during filtration without deformation. A water-absorbing layer 43 is fixedly connected to the inner wall of the first filter cartridge 42. The main function of the water-absorbing layer 43 is to absorb and trap impurities in the liquid, improving filtration efficiency. The water-absorbing layer 43 is made of an oleophobic membrane material. After hydrophilic treatment, the modified polyvinylidene fluoride membrane or polypropylene membrane exhibits hydrophilic and oleophobic properties. A second filter cartridge 44 is fixedly connected inside the water-absorbing layer 43. The second filter cartridge 44 can further filter out small particles that have passed through the water-absorbing layer 43, ensuring a purer filtered liquid. Multiple sets of reinforcing strips 41 are provided, thus ensuring the continuity and reliability of the filtration process.

[0043] The collection component 7 includes a collection box 71, on the inner wall of which a permanent magnet 72 is fixedly connected. The function of the permanent magnet 72 is to attract and collect metal impurities to prevent the metal impurities collected in the collection box 71 from escaping. A handle 73 is provided on the outside of the collection box 71. Through the handle 73, the user can easily pull the movable frame 65 while the compression plate 67 compresses all the impurities collected inside the collection box 71. The handle 73 is fixedly connected to the outer wall of the movable frame 65, and pulling the handle 73 can cause the movable frame 65 to slide.

[0044] The outer wall of the mounting plate 243 is fixedly connected to the inner wall of the oil inlet 28, and the inner walls are tightly connected by a fixed connection method to ensure the stability and sealing between the two. The outer wall of the blocking ring 247 is fixedly connected to the inner wall of the oil inlet 28 to prevent any possible leakage or unwanted flow. The outer wall of the first sealing plate 246 inside the oil outlet 26 is fixedly connected to the outer wall of the filter plate 27. This not only ensures the stable installation of the filter plate 27, but also ensures the sealing effect during the filtration process, thereby improving the reliability and filtration efficiency of the entire system.

[0045] In use, when fuel enters the device through the inlet 28, the flow direction of the fuel is changed by the inlet hole 22. The anti-accumulation device 8 is the core structure, consisting of a cleaning component 3, a filtering component 4, and a settling component 5. A compression component 6 is fixedly connected to the middle of the upper outer wall of the settling component 5. The two work together to separate and collect impurities. A collection component 7 is fixedly connected to the middle of the lower outer wall of the settling component 5 to collect impurities.

[0046] When fuel needs to enter the device, it enters through the fuel inlet assembly 2, which includes a buffer cover 21. The outer wall of the buffer cover 21 has fuel inlet holes 22 circumferentially formed around the central axis, serving as the main channel for fuel to enter the assembly. A sealing cover 23 is fixedly connected above the buffer cover 21 to form a closed environment, effectively preventing fuel leakage. A fuel outlet 26 is provided in the middle of the top of the buffer cover 21. A fuel inlet 28 is provided on one side of the sealing cover 23, and a circulation inlet 25 is provided on the other side. The circulation inlet 25 allows the treated fuel to re-enter the system for circulation. A filter plate 27 is slidably connected to the inner wall of the fuel outlet 26. A one-way valve pipe structure 24 is fixedly connected to the inner walls of the fuel inlet 28, the circulation inlet 25, and the fuel outlet 26 to ensure unidirectional fuel flow, prevent backflow, and ensure smooth fuel flow.

[0047] To prevent backflow during operation, the one-way valve pipe structure 24 includes a mounting plate 243. Anti-detachment rings 241 are slidably connected to the inlets of the circulation inlet 25, oil outlet 26, and oil inlet 28. The anti-detachment rings 241 are fixed to the outer walls of each inlet by tension springs to maintain connection tension and sealing, ensuring normal operation of the device. A first telescopic rod 245 is fixedly connected to the side of the mounting plate 243 away from the anti-detachment ring 241. A return spring 244 is fitted onto the outer wall of the first telescopic rod to enable its extension and retraction, ensuring the flexibility and reliability of the device. A first sealing plate 246 is fixedly connected to the other end of the mounting plate 243 and the return spring 244. The first sealing plate 246 fits against the blocking ring 247 to further prevent leakage and backflow, enhancing the safety performance of the device.

[0048] The filter assembly 4 includes a first filter cartridge 42, whose outer wall is fixedly connected to multiple sets of reinforcing strips 41 to enhance structural strength and resist pressure during filtration. The inner wall of the first filter cartridge 42 is fixedly connected to a water-absorbing layer 43, which is made of an oleophobic membrane material, such as a modified polyvinylidene fluoride membrane or a polypropylene membrane. After hydrophilic treatment, the water-absorbing layer 43 has hydrophilic and oleophobic properties, can absorb water and trap impurities, and ensure the cleanliness of the fuel. The inside of the water-absorbing layer 43 is fixedly connected to a second filter cartridge 44, which further filters out small particles, improves the purity of the fuel, and ensures the quality of the fuel.

[0049] When it is necessary to collect impurities inside the fuel, the settling assembly 5 includes a lower sealing cover 51, with an irregularly shaped guide plate 52 fixedly connected to its upper outer wall and a wave guide groove 53. Multiple sets of irregularly shaped guide plates 52 are arranged in a ring around the lower sealing cover 51, and the wave guide groove 53 is located between the irregularly shaped guide plates 52 to optimize the fuel flow path and promote the settling of impurities under the action of centrifugal force and gravity, thereby improving the purity of the fuel. A second sealing plate 54 is fixedly connected to the middle of the upper outer wall of the lower sealing cover 51 to ensure the sealing performance of the anti-accumulation device 8. At the same time, the second sealing plate 54 is located between the settling assembly 5 and the compression assembly 6 to control the fuel flow direction and ensure smooth fuel flow.

[0050] When the first filter cartridge 42 needs to be cleaned, the cleaning assembly 3 includes a moving ring 31, whose inner wall is fixedly connected to a guide rod 32. A first tension spring 37 is sleeved on the outer wall of the guide rod 32 to provide elasticity and reset function for the assembly, ensuring a smooth cleaning process. A second telescopic rod 33 is arranged on the outer wall of the moving ring 31, and a thrust spring 34 is fixedly connected inside it to provide forward thrust for the cleaning blocks 36. An arc-shaped connecting plate 35 is fixedly connected to the end of the second telescopic rod 33 away from the thrust spring 34. Multiple sets of cleaning blocks 36 are fixedly connected to the outer wall of the arc-shaped connecting plate 35 to clean impurities on the inner wall of the filter assembly 4, keep the filter cartridge clean, and ensure the purity of the fuel.

[0051] When there are too many impurities inside the collection box 71, the compression assembly 6 is composed of an isolation cover 61. A movable rod 62 is slidably connected to the top of the isolation cover 61. One end of the movable rod 62 extends into the inside of the isolation cover 61 and is fixedly connected to the compression plate 67. A second tension spring 66 is sleeved on the outer wall of this end. The other end is fixedly connected to the movable frame 65, and a bellows 63 is sleeved on the outer wall near the movable frame 65 for protection and sealing. A circulation outlet 64 is connected through the top of the isolation cover 61 to facilitate the entry and exit of fluid. The outer wall of the compression plate 67 is in contact with the inner wall of the isolation cover 61. The other end of the second tension spring 66 is fixed to the top of the inside of the isolation cover 61, ensuring that the compression assembly 6 is structurally stable and functionally reliable, and improving the operating efficiency of the device.

[0052] When the internal collection device of this device needs to be cleaned, the collection component 7 includes a collection box 71, whose inner wall is fixedly connected to a permanent magnet 72 to attract and collect metallic impurities, prevent them from overflowing, and ensure the purity of the fuel. The collection box 71 is provided with a handle 73 on the outside, which is fixedly connected to the outer wall of the movable frame 65. Pulling the handle 73 can drive the movable frame 65, the moving rod 62 and the compression plate 67 to move, compressing the impurities in the collection box 71, facilitating cleaning and improving the maintenance efficiency of the device.

[0053] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0054] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A circulating fuel filter for preventing sediment buildup, comprising a cylindrical body (1), characterized in that: The cylinder (1) is equipped with an anti-sludge accumulation device (8), and an oil inlet assembly (2) is fixedly connected above the anti-sludge accumulation device (8). The anti-sludge device (8) includes a cleaning component (3), a filtering component (4) and a settling component (5). A compression component (6) is fixedly connected to the middle of the outer wall above the settling component (5), and a collection component (7) is fixedly connected to the middle of the outer wall below the settling component (5). The settling assembly (5) includes a lower sealing cover (51), an irregularly shaped guide plate (52) is fixedly connected to the outer wall above the lower sealing cover (51), a wave guide groove (53) is opened on the outer wall above the lower sealing cover (51), and a second sealing plate (54) is fixedly connected to the middle of the outer wall above the lower sealing cover (51). The compression assembly (6) includes an isolation cover (61). A movable rod (62) is slidably connected above the isolation cover (61). The end of the movable rod (62) near the settling assembly (5) extends into the interior of the isolation cover (61) and is fixedly connected to a compression plate (67). A second tension spring (66) is sleeved on the outer wall of the end of the movable rod (62) near the compression plate (67). A movable frame (65) is fixedly connected to the end of the movable rod (62) away from the compression plate (67). A corrugated pipe (63) is fitted on the outer wall of the movable rod (62) near the movable frame (65). A circulation outlet (64) is connected through the top of the isolation cover (61). The outer wall of the compression plate (67) is in contact with the inner wall of the isolation cover (61). The end of the second tension spring (66) away from the compression plate (67) is fixedly connected to the top of the inside of the isolation cover (61). The inner wall of the movable rod (62) away from the compression plate (67) is fixedly connected to the outer wall of the movable frame (65). The cleaning component (3) includes a movable ring (31), a guide rod (32) is fixedly connected to the inner wall of the movable ring (31), a first tension spring (37) is sleeved on the outer wall of the guide rod (32), a second telescopic rod (33) is arranged around the center of the movable ring (31), a thrust spring (34) is fixedly connected inside the second telescopic rod (33), an arc-shaped connecting plate (35) is fixedly connected to the end of the second telescopic rod (33) away from the thrust spring (34), and a cleaning block (36) is fixedly connected to the outer wall of the arc-shaped connecting plate (35), and multiple sets of cleaning blocks (36) are provided; The collection component (7) includes a collection box (71), the inner wall of which is fixedly connected with a permanent magnet (72), and the outer side of the collection box (71) is provided with a handle (73), which is fixedly connected to the outer wall of the movable frame (65).

2. The anti-accumulation circulating fuel filter according to claim 1, characterized in that: The irregular guide plate (52) and the sealing cover (51) below it are arranged in a central ring array. The wave guide groove (53) is located between the irregular guide plates (52). The second sealing plate (54) is located between the settling component (5) and the compression component (6).

3. The anti-accumulation circulating fuel filter according to claim 1, characterized in that: The oil inlet assembly (2) includes a buffer cover (21). The outer wall of the buffer cover (21) is provided with an oil inlet hole (22) around the center of the central axis. An upper sealing cover (23) is fixedly connected to the top of the buffer cover (21). An oil outlet (26) is provided in the middle of the top of the buffer cover (21). An oil inlet (28) is provided on one side above the upper sealing cover (23). A circulation inlet (25) is provided on the other side of the upper sealing cover (23) away from the oil inlet (28). A filter plate (27) is slidably connected to the inner wall of the oil outlet (26). A one-way valve pipe structure (24) is fixedly connected to the inner walls of the circulation inlet (25), the oil outlet (26) and the oil inlet (28).

4. A circulating fuel filter for preventing sediment buildup according to claim 3, characterized in that: The one-way valve pipe structure (24) includes a mounting plate (243). The inlets of the circulation inlet (25), oil outlet (26) and oil inlet (28) are all slidably connected with anti-detachment rings (241). The inner wall of the anti-detachment ring (241) is fixedly connected to the outer wall of the circulation inlet (25), oil outlet (26) and oil inlet (28) with tension springs. The end of the tension spring away from the anti-detachment ring (241) is connected to the outer wall of the circulation inlet (25). The side of the mounting plate (243) away from the anti-detachment ring (241) is fixedly connected with a first telescopic rod (245). The outer wall of the first telescopic rod (245) is fitted with a reset spring (244). The end of the mounting plate (243) and the reset spring (244) away from the mounting plate (243) is fixedly connected with a first sealing plate (246). The side of the first sealing plate (246) close to the first telescopic rod (245) is fitted with a blocking ring (247).

5. A circulating fuel filter for preventing sediment buildup according to claim 1, characterized in that: The filter assembly (4) includes a first filter cylinder (42), a reinforcing strip (41) is fixedly connected to the outer wall of the first filter cylinder (42), a water-absorbing layer (43) is fixedly connected to the inner wall of the first filter cylinder (42), a second filter cylinder (44) is fixedly connected to the inside of the water-absorbing layer (43), and multiple sets of the reinforcing strip (41) are provided.

6. A circulating fuel filter for preventing sediment buildup according to claim 4, characterized in that: The outer wall of the mounting plate (243) is fixedly connected to the inner wall of the oil inlet (28), the outer wall of the blocking ring (247) is fixedly connected to the inner wall of the oil inlet (28), and the outer wall of the first sealing plate (246) inside the oil outlet (26) is fixedly connected to the outer wall of the filter plate (27).

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