Heavy truck air filter with efficient filtering function

Abstract

The invention relates to the technical field of air filters, in particular to a heavy truck air filter with an efficient filtering function, which comprises an outer cylinder, an air inlet communicated with the inside of the outer cylinder is formed in the side wall of the outer cylinder, an inner cylinder is arranged in the outer cylinder, and an air outlet is formed in the lower end of the inner cylinder; an outer woven mesh sleeve is arranged on the inner side of the inner barrel, an inner supporting mesh sleeve is arranged on the inner side of the outer woven mesh sleeve, a circle of U-shaped folding filter paper is arranged between the outer woven mesh sleeve and the inner supporting mesh sleeve, a safety barrel is arranged on the inner side of the inner supporting mesh sleeve, and a circle of sharp-corner-shaped folding filter paper is arranged on the inner side of the safety barrel. According to the air purification system, aerodynamics, electrostatic adsorption and piezoelectric conversion technologies are integrated, and a complete air purification system from dynamic pre-filtering and multi-layer efficient filtering to self-cleaning is constructed; the filtering capacity and stability are improved through structural innovation, the self-powered adsorption and self-cleaning functions are achieved through energy recovery, and the maintenance cost is remarkably reduced while the air inlet quality of the heavy truck engine is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of air filter technology, and in particular to an air filter for heavy-duty trucks with high-efficiency filtration function. Background Technology

[0002] Heavy-duty trucks, as complex integrated systems combining mechanical, electronic, and hydraulic technologies, are not only the core force of road transportation but also engineering equipment that meets the demands of heavy-duty operations such as traction and pushing. They often operate continuously in harsh environments with high dust concentrations, such as container transshipment in ports, material transport in metallurgical plants, and cargo loading and unloading at ship docks. The intake system, a crucial component of heavy-duty trucks, has the core function of continuously providing the engine with sufficient and purified air. This air must meet stringent requirements of being clean, dry, and at a suitable temperature to ensure thorough and efficient mixing and combustion with fuel. This guarantees strong engine power output, reduces emissions, and maintains long-term operational reliability, forming the foundation and prerequisite for the stable operation of the entire vehicle's powertrain.

[0003] However, most existing heavy-duty truck engine intake filtration devices rely on a single filter element for passive filtration. There is a lack of effective pretreatment structures before the air enters the filter element, and the airflow is primarily linear. Dust and particles directly impact the filter paper surface, easily causing high-speed erosion in localized areas. This leads to concentrated load on the filter element, rapid clogging, and a short service life. Furthermore, traditional filter elements have limited filtration area within confined installation space, resulting in insufficient dust holding capacity and making it difficult to meet the long-term stable operation requirements of heavy-duty trucks under high-dust conditions. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned shortcomings in the prior art by proposing an air filter for heavy-duty trucks with high-efficiency filtration function.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An air filter for heavy-duty trucks with high-efficiency filtration function includes an outer cylinder, a detachable top cover installed at the top of the outer cylinder, an air inlet connected to the interior of the outer cylinder installed on the side wall of the outer cylinder, the air inlet being offset from the vertical central axis of the outer cylinder, and an inner cylinder provided inside the outer cylinder, with an air outlet installed at the lower end of the inner cylinder for discharging filtered air. The inner cylinder is provided with an outer woven mesh sleeve on its inner side, and an inner support mesh sleeve is provided on the inner side of the outer woven mesh sleeve. The top ends of the outer woven mesh sleeve and the inner support mesh sleeve are connected to a fixing plate. A U-shaped folded filter paper is provided between the outer woven mesh sleeve and the inner support mesh sleeve. A safety cylinder is provided on the inner side of the inner support mesh sleeve. Through holes are evenly distributed on the outer wall of the safety cylinder. A ring of pointed folded filter paper is provided on the inner side of the safety cylinder. A vertically penetrating channel is provided on the inner side of the pointed folded filter paper. The lower end of the channel is connected to the air outlet.

[0006] Preferably, the top end of the outer cylinder is connected to the upper cover by a fastener.

[0007] Preferably, a rotating ring is rotatably connected to the top of the inner cylinder, and air guide plates are evenly distributed on the inner side of the rotating ring. The air guide plates are designed with a certain angle of inclination. A sliding groove is provided on the lower side of the outer wall of the inner cylinder. Multiple sliding blocks are slidably connected at equal intervals inside the sliding groove. A vertically arranged electrostatic rod is detachably installed on each sliding block. The top of the electrostatic rod passes through the gap between two adjacent air guide plates inside the air guide plate. An auxiliary dust collection mechanism is provided on the section of the electrostatic rod located between the rotating ring and the sliding groove.

[0008] Preferably, the auxiliary dust collection mechanism includes several air carrier plates fixedly installed on the electrostatic rod. The air carrier plates are designed to be vertically continuous, with a horizontal cross-section shaped like a melon seed and streamlined sidewalls. A vibrating tail plate is fixedly connected to the tail of the air carrier plate. Multiple piezoelectric plates are installed on both the front and rear sidewalls of the vibrating tail plate. The multiple piezoelectric plates are connected in series and connected to the electrostatic rod through wires.

[0009] Preferably, a ventilation frame is fitted on the outer side of the vibrating tail plate, the ventilation frame is fixedly connected to the tail of the air carrier plate, and the surface of the ventilation frame has multiple hollowed-out areas.

[0010] Preferably, a first magnetic strip is installed between two adjacent piezoelectric plates, and a second magnetic strip is installed on the inner walls of both the front and rear sides of the ventilation frame. The positions of the second magnetic strip and the first magnetic strip correspond one-to-one, and the magnetic poles of the second magnetic strip and the first magnetic strip are the same at the ends that are close to each other.

[0011] Preferably, the inner and outer surfaces of the U-shaped folded filter paper are provided with wire mesh for support and fixation.

[0012] Preferably, the outer wall of the safety cylinder and the inner wall of the inner support mesh sleeve do not contact each other and there is a large gap between them.

[0013] Preferably, the outer woven mesh sleeve is flexible and stretchable, and each grid on the surface of the outer woven mesh sleeve is equipped with a metal paddle arranged vertically. The metal paddle is made of a metal material that can be magnetically attracted and generates magnetic attraction with the first magnetic strip and the second magnetic strip.

[0014] Preferably, the outer woven mesh is made of PVDF piezoelectric fiber, and graphene oxide powder is added to the PVDF piezoelectric fiber.

[0015] Compared with the prior art, the advantages of the present invention are as follows: 1. This invention utilizes an innovative airflow design to cause the incoming air to rotate between the outer and inner cylinders, driving the rotating ring and electrostatic rod to move in a circular motion. The airflow generates turbulence through the air carrier plate and the vibrating tail plate, which, combined with the mutual repulsion of the magnetic strips, excites the piezoelectric plate to vibrate at high frequency, autonomously generating current and conducting it to the electrostatic rod, making it charged. The rotating electrostatic rod continuously adsorbs suspended particles in the air during its movement, forming a dynamic electrostatic filter layer, which significantly reduces the burden on the downstream filter element and improves the pre-filtration efficiency.

[0016] 2. This invention adopts a combination structure of U-shaped folded filter paper and linear pointed-corner folded filter paper, which greatly increases the filter paper area and improves dust holding capacity within a limited space; the U-shaped channel guides the airflow to pass smoothly and avoids local scouring; the outer woven mesh sleeve and the inner support mesh sleeve clamp the filter paper from both sides to prevent deformation; the inner safety cylinder through holes divert the airflow, and together with the pointed-corner filter paper, completes the final filtration. The multiple structures ensure filtration accuracy and reliability, and ensure that the cleanliness of the output air meets the requirements of the engine.

[0017] 3. The outer woven mesh sleeve of this invention is made of PVDF piezoelectric fiber fused with graphene oxide, which has flexible and stretchable properties; the internal rotating magnetic strip drives the metal paddles between the mesh sleeves to periodically pull, so that the mesh sleeve continuously deforms and generates charges, which helps to adsorb particles and achieve self-cleaning; this mechanism not only enhances the dust collection capacity of the filter paper through electrostatics, but also shakes the accumulated dust to the bottom, delays filter element clogging, extends the maintenance cycle, and reduces the frequency of manual cleaning. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an air filter for heavy-duty trucks with high-efficiency filtration function proposed in this invention.

[0019] Figure 2 This is a schematic diagram of the internal structure of an air filter for heavy-duty trucks with high-efficiency filtration function proposed in this invention.

[0020] Figure 3 This is a schematic diagram of the safety cylinder and electrostatic rod structure of an air filter for heavy-duty trucks with high-efficiency filtration function proposed in this invention.

[0021] Figure 4 This is a schematic diagram of the air carrier plate and vibrating tail plate structure of an air filter for heavy trucks with high-efficiency filtration function proposed in this invention.

[0022] Figure 5This is a schematic diagram of the first and second magnetic stripes of an air filter for heavy-duty trucks with high-efficiency filtration function proposed in this invention.

[0023] Figure 6 This is a schematic diagram of the air guide plate and rotating ring structure of an air filter for heavy trucks with high-efficiency filtration function proposed in this invention.

[0024] Figure 7 This is a schematic diagram of the outer woven mesh sleeve and inner support mesh sleeve structure of an air filter for heavy trucks with high-efficiency filtration function proposed in this invention.

[0025] Figure 8 This is a schematic diagram of the inner support mesh and metal fin structure of an air filter for heavy-duty trucks with high-efficiency filtration function proposed in this invention.

[0026] In the diagram: 1. Top cover, 2. Outer cylinder, 3. Fixing buckle, 4. Air inlet, 5. Air outlet, 6. Inner cylinder, 7. Sliding groove, 8. Sliding block, 9. Static rod, 10. Rotating ring, 11. Air guide plate, 12. Fixing plate, 13. Outer woven mesh sleeve, 14. U-shaped folded filter paper, 15. Inner support mesh sleeve, 16. Safety cylinder, 17. Pointed folded filter paper, 18. Metal lever, 19. Air carrier plate, 20. Vibrating tail plate, 21. Ventilation frame, 22. Wire, 23. Piezoelectric plate, 24. First magnetic strip, 25. Second magnetic strip. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] Reference Figures 1 to 8 An air filter for heavy-duty trucks with high-efficiency filtration function includes an outer cylinder 2. A detachable top cover 1 is installed on the top of the outer cylinder 2 by a fixing buckle 3. An air inlet 4 is installed on the side wall of the outer cylinder 2. The air inlet 4 is connected to the inside of the outer cylinder 2 and is offset from the vertical central axis of the outer cylinder 2. An inner cylinder 6 is provided inside the outer cylinder 2, so that the air entering between the outer cylinder 2 and the inner cylinder 6 through the air inlet 4 can rotate inside it. An air outlet 5 is installed at the lower end of the inner cylinder 6 for discharging the filtered air.

[0029] A rotating ring 10 is rotatably connected to the top of the inner cylinder 6. Air guide plates 11 are evenly distributed on the inner side of the rotating ring 10. The air guide plates 11 are designed with a certain angle. A sliding groove 7 is provided below the outer wall of the inner cylinder 6. Multiple sliding blocks 8 are slidably connected at equal intervals inside the sliding groove 7. A vertically arranged electrostatic rod 9 is detachably installed on each sliding block 8. The top of the electrostatic rod 9 passes through the gap between two adjacent air guide plates 11 inside the air guide plate 11. When the rotating air passes through the rotating ring 10, the rotating ring 10 rotates at high speed under the action of the air guide plate 11, thereby driving the electrostatic rod 9 to perform a circular motion around the inner cylinder 6.

[0030] Several air-carrying plates 19 are fixedly connected to a section of the electrostatic rod 9 located between the rotating ring 10 and the sliding groove 7. The air-carrying plates 19 are designed to be vertically continuous, with a horizontal cross-section shaped like a melon seed and streamlined sidewalls. A vibrating tail plate 20 is fixedly connected to the tail of each air-carrying plate 19. The design of the air-carrying plate 19 allows the vibrating tail plate 20 to generate high-frequency vibration under the action of airflow. A ventilation frame 21 is fitted around the outer side of the vibrating tail plate 20, and the ventilation frame 21 is fixedly connected to the tail of the air-carrying plate 19. The surface of the ventilation frame 21 has multiple perforations. Multiple piezoelectric plates 23 are installed on both the front and rear side walls. A first magnetic strip 24 is installed between two adjacent piezoelectric plates 23. A second magnetic strip 25 is installed on both the front and rear inner walls of the ventilation frame 21. The positions of the second magnetic strip 25 and the first magnetic strip 24 correspond one-to-one. The magnetic poles of the second magnetic strip 25 and the first magnetic strip 24 are the same at the ends that are close to each other. There is a repulsive force between them, which is conducive to the vibration tail plate 20 to generate further vibration. All the piezoelectric plates 23 are connected in series and connected to the electrostatic rod 9 through the wire 22, so that the electrostatic rod 9 is charged.

[0031] The inner cylinder 6 has an outer woven mesh sleeve 13 on its inner side, and an inner support mesh sleeve 15 on its inner side. The top ends of the outer woven mesh sleeve 13 and the inner support mesh sleeve 15 are connected to a fixing plate 12. A cavity is formed between the outer woven mesh sleeve 13 and the inner support mesh sleeve 15. A U-shaped folded filter paper 14 is provided inside the cavity. The inner and outer surfaces of the U-shaped folded filter paper 14 are provided with wire mesh (not shown in the figure) to support and fix it, preventing the U-shaped folds from deforming, collapsing or breaking under high pressure differential. A safety cylinder 16 is provided inside the inner support mesh sleeve 15. The outer wall of the safety cylinder 16 does not contact the inner wall of the inner support mesh sleeve 15 and there is a large gap. The outer wall of the safety cylinder 16 is evenly distributed with through holes. A ring of pointed folded filter paper 17 is provided inside the safety cylinder 16. A vertical channel is provided inside the pointed folded filter paper 17. The top end of the channel is closed by the top wall of the safety cylinder 16, and the bottom end is connected to the air outlet 5.

[0032] The outer woven mesh sleeve 13 is made of PVDF piezoelectric fiber, and graphene oxide powder is added to the PVDF piezoelectric fiber, making the outer woven mesh sleeve 13 flexible and stretchable. Each grid on the surface of the outer woven mesh sleeve 13 is also equipped with vertically arranged metal tabs 18. The metal tabs 18 are made of metal material that can be magnetically attracted, so that the first magnetic strip 24 and the second magnetic strip 25 can generate an attraction force on the metal tabs 18 while rotating around the inner cylinder 6. Under the action of the attraction force, the metal tabs 18 further pull the outer woven mesh sleeve 13 to continuously deform. Under the action of the inherent properties of PVDF piezoelectric fiber, the outer woven mesh sleeve 13 becomes charged, thereby assisting the U-shaped folded filter paper 14 in adsorbing dust.

[0033] When using this invention, first fix the entire device to the installation position on the heavy truck, connect the external air intake pipe to the air intake 4, and connect the external air outlet pipe to the air outlet 5, and then it can work normally.

[0034] A large amount of outside air enters the space between the outer cylinder 2 and the inner cylinder 6 through the air inlet 4. Since the air inlet 4 is located on the side of the outer cylinder 2, the air entering the outer cylinder 2 will rotate in the space between the outer cylinder 2 and the inner cylinder 6. The lower part of the electrostatic rod 9 is installed on the sliding block 8, and the upper part of the electrostatic rod 9 is in contact with the air guide plate 11 inside the rotating ring 10. When the internal air rotates, it will generate an air spiral in conjunction with the air guide plate 11. The spiral will drive the rotating ring 10 to rotate at high speed, and the rotating ring 10 will also drive the electrostatic rod 9 to rotate. The sliding block 8 at the bottom of the electrostatic rod 9 will move in a circular motion in the sliding groove 7 on the outer surface of the inner cylinder 6, which will support and position the electrostatic rod 9.

[0035] An air carrier plate 19 is installed on the electrostatic rod 9. Under the action of high-speed spiral airflow, the spiral gas comes into contact with the front end of the air carrier plate 19. Due to the design of the air carrier plate 19, the air velocity at the front and rear is different, which generates strong turbulence at the vibrating tail plate 20 at the rear, causing the vibrating tail plate 20 to vibrate at a high frequency. The ventilation frame 21 covers the outside of the vibrating tail plate 20, which can not only concentrate the turbulence on the position of the vibrating tail plate 20, but also limit the vibration of the vibrating tail plate 20 to avoid excessive vibration amplitude, thereby increasing the vibration frequency. A piezoelectric plate 23 is also installed on the vibrating tail plate 20. A first magnetic strip 24 is installed between two adjacent piezoelectric plates 23. A second magnetic strip 25 corresponding to the first magnetic strip 24 is installed on the inner side of the ventilation frame 21. Under the action of the mutual repulsion between the first magnetic strip 24 and the second magnetic strip 25, the vibrating tail plate 20 will also vibrate. Combined with the turbulence generated by the airflow, this causes the piezoelectric plate 23 to vibrate at a high frequency. The high frequency vibration of the piezoelectric plate 23 will generate current, which will charge the electrostatic rod 9 through the wire 22. Since the electrostatic rod 9 is charged and keeps moving in a circular motion around the inner cylinder 6, it will adsorb particles in the air and reduce the working pressure of the filter element.

[0036] The fixing plate 12 is fixed with an outer woven mesh sleeve 13 and an inner support mesh sleeve 15, with a U-shaped folded filter paper 14 in the middle. The surface of the inner safety cylinder 16 has through holes, and the inner side has linear pointed folded filter paper 17. In a limited space, the U-shaped fold can accommodate more filter paper than a simple linear fold, and has a larger dust holding capacity. The U-shaped channel guides the airflow smoothly through the filter paper, avoiding local high-speed scouring. The inner and outer wire meshes fix the U-shaped folded filter paper 14 to prevent the U-shaped folds from deforming, collapsing or breaking under high pressure differential. The safety cylinder 16 with a circular through hole can divert the airflow, and together with the pointed folded filter paper 17 in the middle, it performs the final filtration as the final guarantee to ensure that the air entering the engine from the air outlet 5 is not problematic.

[0037] The outer woven mesh sleeve 13 is made of PVDF piezoelectric fibers with added graphene oxide powder, giving it a flexible and stretchable structure. Each mesh on the surface of the outer woven mesh sleeve 13 is equipped with a metal lever 18. Because the first magnetic strip 24 and the second magnetic strip 25 are constantly rotating around the inner cylinder 6, they pull the metal levers 18 in the mesh of the outer woven mesh sleeve 13. These metal levers 18, in turn, cause the outer woven mesh sleeve 13 to continuously deform, thus utilizing the properties of the PVDF piezoelectric fibers to make them charged. This assists the U-shaped folded filter paper 14 in adsorbing dust. Furthermore, because the outer woven mesh sleeve 13 is constantly deforming, it has a self-cleaning effect, shaking dust and particles to the bottom. For later disassembly, the fixing buckle 3 can be opened, the top cover 1 removed, and the device disassembled for cleaning.

[0038] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An air filter for heavy-duty trucks with high-efficiency filtration function, comprising an outer cylinder (2), wherein a detachable top cover (1) is installed at the top of the outer cylinder (2), characterized in that, The outer cylinder (2) has an air inlet (4) connected to its interior installed on its side wall. The air inlet (4) is offset from the vertical central axis of the outer cylinder (2). The outer cylinder (2) has an inner cylinder (6) inside. The lower end of the inner cylinder (6) has an air outlet (5) for discharging filtered air. The inner cylinder (6) is provided with an outer woven mesh sleeve (13) on the inner side, and an inner support mesh sleeve (15) is provided on the inner side of the outer woven mesh sleeve (13). The top ends of the outer woven mesh sleeve (13) and the inner support mesh sleeve (15) are connected to a fixing plate (12). A U-shaped folded filter paper (14) is provided between the outer woven mesh sleeve (13) and the inner support mesh sleeve (15). A safety cylinder (16) is provided on the inner side of the inner support mesh sleeve (15). Through holes are evenly distributed on the outer wall of the safety cylinder (16). A ring of pointed folded filter paper (17) is provided on the inner side of the safety cylinder (16). A vertical channel is provided on the inner side of the pointed folded filter paper (17). The lower end of the channel is connected to the air outlet (5).

2. The heavy-duty truck air filter with high-efficiency filtration function according to claim 1, characterized in that, The top of the outer cylinder (2) is connected to the upper cover (1) by a fastener (3).

3. The heavy-duty truck air filter with high-efficiency filtration function according to claim 1, characterized in that, The top of the inner cylinder (6) is rotatably connected to a rotating ring (10). The inner side of the rotating ring (10) is evenly distributed with air guide plates (11). The air guide plates (11) are designed with a certain angle of inclination. A sliding groove (7) is provided below the outer wall of the inner cylinder (6). Multiple sliding blocks (8) are slidably connected at equal intervals inside the sliding groove (7). Each sliding block (8) is detachably installed with a vertically arranged electrostatic rod (9). The top of the electrostatic rod (9) passes through the gap between two adjacent air guide plates (11) inside the air guide plate (11). An auxiliary dust collection mechanism is provided on the section of the electrostatic rod (9) between the rotating ring (10) and the sliding groove (7).

4. The heavy-duty truck air filter with high-efficiency filtration function according to claim 3, characterized in that, The auxiliary dust collection mechanism includes several air carrier plates (19) fixedly installed on the electrostatic rod (9). The air carrier plate (19) is designed to be through from top to bottom, and its horizontal cross-section is shaped like a melon seed. Its side wall is designed to be streamlined. The tail of the air carrier plate (19) is fixedly connected to a vibrating tail plate (20). Multiple piezoelectric plates (23) are installed on the front and rear side walls of the vibrating tail plate (20). The multiple piezoelectric plates (23) are connected in series and connected to the electrostatic rod (9) through wires (22).

5. The heavy-duty truck air filter with high-efficiency filtration function according to claim 4, characterized in that, The outer side of the vibrating tail plate (20) is fitted with a ventilation frame (21), which is fixedly connected to the tail of the air carrier plate (19). The surface of the ventilation frame (21) has multiple hollowed-out areas.

6. The heavy-duty truck air filter with high-efficiency filtration function according to claim 5, characterized in that, A first magnetic strip (24) is installed between two adjacent piezoelectric plates (23). A second magnetic strip (25) is installed on the inner walls of the front and rear sides of the ventilation frame (21). The positions of the second magnetic strip (25) and the first magnetic strip (24) correspond one-to-one, and the magnetic poles of the second magnetic strip (25) and the first magnetic strip (24) are the same at the end that are close to each other.

7. The heavy-duty truck air filter with high-efficiency filtration function according to claim 1, characterized in that, The U-shaped folded filter paper (14) has wire mesh on both its inner and outer surfaces for support and fixation.

8. The heavy-duty truck air filter with high-efficiency filtration function according to claim 1, characterized in that, The outer wall of the safety cylinder (16) does not contact the inner wall of the inner support mesh sleeve (15) and there is a large gap between them.

9. The heavy-duty truck air filter with high-efficiency filtration function according to claim 6, characterized in that, The outer woven mesh sleeve (13) is flexible and stretchable. Each mesh on the surface of the outer woven mesh sleeve (13) is equipped with metal paddles (18) arranged vertically. The metal paddles (18) are made of metal material that can be magnetically attracted and generate magnetic attraction with the first magnetic strip (24) and the second magnetic strip (25).

10. The air filter for heavy-duty trucks with high-efficiency filtration function according to claim 9, characterized in that, The outer woven mesh (13) is made of PVDF piezoelectric fiber, and graphene oxide powder is added to the PVDF piezoelectric fiber.

Images