All-terrain vehicle engine air inlet air filter and transposition method of filter element of all-terrain vehicle engine air inlet air filter

Abstract

The invention discloses an all-terrain vehicle engine air inlet air filter and a transposition method of a filter element of the all-terrain vehicle engine air inlet air filter, and relates to the technical field of engine air filtration. The air filter mainly comprises an air filter shell, a cylindrical filter element, an air filter side cover, an air inlet cover and a filter element slow transposition driving device. The core innovation lies in that the driving device adopts a volatile solid material as a slow-release driving element, and intermittent slow transposition of the filter element is realized through mechanical transmission. The driving device is composed of a device outer cover, a driving ring and an elastic energy storage element, solid volatilization chambers are evenly distributed in the driving ring along the circumference, and each chamber is filled with volatile solid materials such as camphor or naphthalene and provided with a movable blocking piece which is eccentrically hinged. The working principle is based on the design that solid material volatilization volume reduction and pre-energy-storage mechanical transmission are combined. The elastic energy storage element stores energy in advance to provide stable torsion driving force, constraint is gradually weakened along with reduction of material volatilization, and when the material volatilizes to a critical point, the movable blocking piece is separated from the constraint, and lattice changing rotation is achieved.

Description

Technical Field

[0001] This invention relates to the field of engine air filtration technology, specifically to an all-terrain vehicle engine intake air filter driven by volatile solid materials and its filter element slow rotation control method, particularly an air filtration device that achieves uniform utilization of the filter element by combining the volume change of solid material volatilization with mechanical transmission. Background Technology

[0002] All-terrain vehicles (ATVs) are special vehicles that can travel in various complex terrain conditions. They often need to operate continuously in harsh conditions, where the air contains a large amount of pollutants such as sand, soil particles, and plant debris. This places extremely high demands on the filtration performance of the engine's air intake system.

[0003] Publication No. CN 208203446 U discloses a novel air filter, relating to the field of air filters, comprising an air filter housing, screws, a right cover of the air filter, a cylindrical fiber filter element, an air inlet cover, self-tapping screws, and an air inlet pipe. The air filter housing is secured to the right cover by several screws. The cylindrical fiber filter element is installed inside the air inlet of the air filter housing. An air inlet cover is provided at the air inlet of the air filter housing, and the air inlet cover is fixedly connected to the right cover of the air filter by several self-tapping screws. An air inlet pipe is provided at one end of the air filter housing. This structural design provides dustproof and waterproof effects, and the cylindrical fiber filter element is easy to clean and maintain, as well as convenient to install and disassemble.

[0004] However, the aforementioned existing technologies have the following shortcomings in the practical application of all-terrain vehicles: I. Uneven utilization of filter elements. Existing cylindrical filter elements use a fixed installation method, such as... Figure 1 As shown in the coordinate system, the cylindrical filter element is installed along the X-axis, the air inlet cap is installed at the open end of the cylindrical filter element, and the air intake pipe (connecting to the engine's air intake) is installed along the Y-axis. This layout causes the working airflow path to always be biased towards one side of the air intake pipe, resulting in the cylindrical filter element bearing the main filtration load on that side, while other areas are underutilized. In the high-dust environment of all-terrain vehicles, this uneven load distribution problem is even more prominent, with local areas quickly becoming clogged, while most of the filtration area is underutilized and rendered unusable.

[0005] Second, high maintenance frequency and high cost. All-terrain vehicles often operate in remote, off-road areas. Frequent filter replacements not only increase maintenance costs, but more importantly, replacing filters in harsh environments is extremely inconvenient. Especially during long-distance travel such as desert off-roading and forest crossings, premature filter failure can lead to vehicle breakdowns, affecting mission execution. Existing fixed filters have low utilization efficiency and may need to be cleaned or replaced every few hundred kilometers in high-dust environments, severely limiting the range and operational efficiency of all-terrain vehicles.

[0006] III. Technical Challenges of Power-Driven Systems. While rotating filter elements can theoretically solve the problem of uneven utilization, their application in all-terrain vehicles presents unique challenges: High sealing requirements: All-terrain vehicles frequently wade through water and traverse obstacles, so any rotating parts must be absolutely airtight and waterproof. Frequent rotation will accelerate the wear of seals.

[0007] Power supply limitations: The electric system of all-terrain vehicles is already under heavy load. Adding an electric shifter will increase power consumption and may affect the vehicle's range in the field.

[0008] Reliability requirements: Complex electronic control systems are prone to failure in extreme environments such as bumps, high temperatures, and high humidity, which are precisely the environments that all-terrain vehicles are often in.

[0009] Therefore, there is a need for an engine intake air filter that can automatically, slowly, and evenly rotate the filter element without an external power source, has a simple and reliable structure, and thus significantly extend the service life of the filter element and reduce maintenance frequency and cost. Summary of the Invention

[0010] The technical problem to be solved by the present invention is that: in the use of existing all-terrain vehicle engine air filters, the filter element is in a fixed position for a long time, which leads to excessive dust accumulation in local areas, reduced filtration efficiency, increased intake resistance, and affected engine performance. In addition, the filter element needs to be replaced frequently, which increases the cost of use and maintenance workload.

[0011] To solve the above-mentioned technical problems, the present invention provides an air intake filter for an all-terrain vehicle engine, comprising: an air filter housing; a cylindrical filter element rotatably installed inside the air filter housing; a sealing structure that divides the internal space of the air filter housing into an inner chamber and an outer chamber; an air intake port communicating with the outer chamber; and a filter element slow rotation drive device.

[0012] The filter element slow rotation drive device is the core technical feature of this invention, comprising: a drive ring connected to the cylindrical filter element, which has multiple solid evaporation chambers inside, each chamber filled with volatile solid material and equipped with a movable blocking component; an elastic energy storage element connected between the cylindrical filter element and the air filter housing to provide rotational driving force; and a fixed blocking part disposed on the air filter housing. Its working principle is as follows: the elastic energy storage element provides the driving force to rotate the cylindrical filter element, and the movable blocking component, supported by the volatile solid material, cooperates with the fixed blocking part to control the rotation of the cylindrical filter element.

[0013] In the preferred technical solution, one end of the cylindrical filter element is open, and the other end is provided with a filter element bottom cover. The filter element bottom cover is provided with a first through hole for airflow. A rotating ring is fixedly installed on the outer periphery of the first through hole, and a drive ring is connected to the rotating ring to realize power transmission.

[0014] The movable blocking component is eccentrically hinged to the solid evaporation chamber. The outer peripheral wall of the solid evaporation chamber is provided with slots. The free end of the movable blocking component extends to the outside of the slots. This structure enables precise blocking control.

[0015] The drive ring adopts an annular cavity structure with multiple solid volatilization chambers evenly distributed along the circumference to ensure the uniformity and continuity of rotation.

[0016] To control the evaporation process, a central ring is provided at the center of the drive ring, and each solid evaporation chamber is provided with a vent hole corresponding to the central ring; the filter element slow rotation drive device also includes an outer cover, and a connecting ring is provided on the inner bottom surface of the outer cover. The connecting ring is sleeved on the central ring and has a connecting hole in the direction of the corresponding fixed blocking part to achieve selective evaporation control.

[0017] The elastic energy storage element is preferably a constant force energy storage spring, which is wound around the rotating part of the cylindrical filter element. Its inner end is fixed to the cylindrical filter element, and its outer end is fixed to the air filter housing, providing a stable rotational driving force.

[0018] To further optimize control precision, the present invention may also include a valve mechanism, comprising: a spindle mounted in an airflow passage; a valve plate mounted on the spindle; and an elastic element sleeved on the spindle. When the engine operates and generates airflow pulsations, the valve plate overcomes the resistance of the elastic element to open, allowing outside air to enter the solid vaporization chamber; when the engine stops operating, the elastic element closes the valve plate to prevent ineffective vaporization. The valve mechanism may also include an adjusting nut for adjusting the preload of the elastic element, thereby adjusting the opening sensitivity.

[0019] To achieve precise timing control, a cutter head can be installed on the outer casing of the device. The working part of the cutter head extends into the solid evaporation chamber. The cutter head is positioned in front of the fixed blocking part in the rotation direction of the drive ring, and is used to break the sealed packaging at the appropriate time to start the evaporation process.

[0020] This invention also provides a method for rotating the filter element of an air filter for an all-terrain vehicle engine, comprising the following steps: rotatably installing a cylindrical filter element inside the air filter housing, allowing external air to enter the engine after being filtered by the cylindrical filter element; applying a rotational driving force to the cylindrical filter element through an elastic energy storage element; providing a plurality of solid evaporation chambers filled with volatile solid materials within a drive ring connected to the cylindrical filter element, each solid evaporation chamber having a movable blocking component; using the volatile solid material to support the movable blocking component and form a blocking engagement with a fixed blocking part fixed on the air filter housing, thereby restricting... The cylindrical filter element rotates under the action of the elastic energy storage element; as the volatile solid material gradually evaporates, the support position of the movable blocking member changes. When the evaporation reaches a predetermined level, the movable blocking member disengages from the fixed blocking part; after the movable blocking member disengages from the fixed blocking part, the cylindrical filter element rotates by a predetermined angle under the drive of the elastic energy storage element, so that the next movable blocking member forms a new blocking fit with the fixed blocking part; repeating the above evaporation-disengagement-rotation process, the cylindrical filter element is intermittently and slowly rotated, so that the filtration surface of the cylindrical filter element is uniformly utilized.

[0021] Compared with the prior art, the present invention has the following beneficial effects: This invention employs a slow-rotation structure driven by volatile solid materials, utilizing an elastic energy storage element to provide a continuous and stable rotational driving force. Combined with a precise cooperation mechanism between the movable and fixed blocking parts, it achieves intermittent slow rotation of the cylindrical filter element, ensuring uniform utilization of the entire filtration surface. This effectively avoids the problem of excessive dust accumulation in localized areas of traditional fixed filter elements, significantly improving filtration efficiency and extending filter element lifespan. Simultaneously, by setting multiple circumferentially distributed solid evaporation chambers, along with a selective evaporation control mechanism using vents and connecting holes, the continuity and uniformity of the rotation process are ensured, maintaining stable intake resistance and guaranteeing engine power performance. Furthermore, the optional valve mechanism can synchronize with the engine's operating state, initiating the evaporation process only when the engine is running, avoiding ineffective material waste and improving system economy. The timing control of the cutter head device further ensures the accurate activation timing of each solid evaporation chamber. The entire system adopts a purely mechanical structure, requiring no electric drive, and boasts advantages such as simple structure, high reliability, and convenient maintenance. Attached Figure Description

[0022] Figure 1 A schematic diagram of the overall structure of an air filter for an all-terrain vehicle engine shows the assembly relationship of the air filter housing 110, cylindrical filter element 120, air inlet cover 140, engine air intake pipe 111, and filter element slow rotation drive device 200, and marks the XYZ coordinate system.

[0023] Figure 2: An exploded view of the intake air filter, showing the separation state and interrelationship of the main components such as the air filter side cover 130, cylindrical filter element 120, filter element bottom cover 121, swivel ring 02, and swivel base 03.

[0024] Figure 3 : An exploded view of the filter element slow rotation drive device 200, including the device cover 210, drive ring 220, elastic energy storage element 230, and the exploded structure of each component of the valve mechanism 300.

[0025] Figure 4 : Structural diagram of the device outer casing, showing the layout and relative positional relationship of the connecting ring 08 and the connecting hole 09.

[0026] Figure 5 : Front view of the air intake filter, with the AA section line marked, showing the overall shape and the appearance of the main components.

[0027] Figure 6 A three-dimensional assembly drawing of the air intake air filter, showing the overall assembly effect of components such as the air filter housing 110, cylindrical filter element 120, and device cover 210.

[0028] Figure 7 The cross-sectional view along line AA shows the installation method of the cylindrical filter element 120 in the air filter housing 110, the separation of the inner and outer chambers, and the internal structure of the airflow channel.

[0029] Figure 8 : A detailed cross-sectional view of the valve mechanism 300, showing the assembly relationship and working principle of components such as the spindle 310, valve plate 320, elastic element 330, adjusting nut 340, and spindle mounting sleeve 350.

[0030] Figure 9 The three-dimensional assembly drawing of the entire device shows, in particular, the mounting position of the cutter head 400 on the outer cover 210 of the device and its relative relationship with the drive ring 220.

[0031] Figure 10 A partial enlarged view of the internal structure of the drive ring 220, showing in detail the structural details and interaction relationships of key components such as the solid volatilization chamber 221, the movable blocking component 222, the slot 04, and the fixed blocking part 031.

[0032] Figure 11 : An actual photograph of the air intake filter of this invention installed on an all-terrain vehicle.

[0033] Figure 12 : Another actual photo of the air intake filter of this invention installed on an all-terrain vehicle from another angle.

[0034] Figure 13: An actual photograph of the filter element slow rotation drive device of the air intake filter of the present invention.

[0035] Figure label: Air filter housing 110, engine intake pipe 111, cylindrical filter element 120, filter element bottom cover 121, air filter side cover 130, air inlet cover 140, filter element slow rotation drive device 200, device cover 210, drive ring 220, solid evaporation chamber 221, movable blocking component 222, elastic energy storage element 230, fixed blocking part 031, cutter head 400, rotating ring 02, rotating seat 03, center ring 06, connecting ring 08.

[0036] Various hole types: First through hole 01, Second through hole 05, Vent hole 07, Connecting hole 09, Slot hole 04.

[0037] Components related to valve mechanism 300: spindle 310, valve plate 320, elastic element 330, adjusting nut 340, spindle mounting sleeve 350. Detailed Implementation Example

[0038] like Figure 1 , Figure 2 As shown, an air filter for an all-terrain vehicle engine uses a slow-rotation structure driven by volatile solid materials. It can utilize the natural volatile properties of solid materials to drive the filter element to rotate slowly, thereby achieving uniform utilization of the filter surface.

[0039] The air intake air filter includes an air filter housing 110, a cylindrical filter element 120 installed in the air filter housing 110, an air filter side cover 130 that closes the air filter housing 110 to form an inner chamber and an outer chamber, an air inlet cover 140 installed on the outer surface of the air filter housing 110 and communicating with the outer chamber, and a filter element slow rotation drive device 200 installed on the outer surface of the air filter housing 110 and on the other side opposite to the air inlet cover 140.

[0040] like Figure 1In the coordinate system, the axis of the cylindrical filter element 120 is set along the X-axis, with one end open and the other end equipped with a filter element bottom cover 121. The center of the filter element bottom cover 121 has a first through hole 01 for airflow, and a rotating ring 02 is bonded and fixed to the outer periphery of the first through hole 01. A rotating seat 03 is provided on the outer wall of the air filter housing 110 on the side corresponding to the filter element bottom cover 121. At the center of the rotating seat 03 and at this position on the air filter housing 110, a second through hole 05 corresponding to the first through hole 01 for airflow is provided. The rotating seat 03 is used to fit the rotating ring 02, forming a rotatable fit. The open end of the cylindrical filter element 120 is sealed by a tight, rotatable sealing structure provided on the air filter side cover 130. This sealing structure, such as foam, together with the rotating ring 02 and the rotating seat 03, forms a complete installation of the cylindrical filter element 120.

[0041] Air filter housing 110 in Figure 1 An engine intake pipe 111 is provided along the Y-axis. One end of the engine intake pipe 111 communicates with the inner chamber through a connecting hole provided at the connection of the air filter housing 110, and the other end extends along the Y-axis and connects to the engine intake manifold. During operation, outside air enters the outer chamber through the intake cover 140, is filtered by the cylindrical filter element 120, enters the inner chamber, and is finally delivered to the engine through the engine intake pipe 111.

[0042] like Figures 2 to 3 As shown, the filter element slow rotation drive device 200 uses volatile solid material as a slow-release drive element to achieve slow rotation of the filter element through mechanical transmission. The main body of the drive device includes: a cylindrical device cover 210 that can be detachably mounted on the outer surface of the air filter housing 110 by screws; a drive ring 220 that is covered by the device cover 210 and has a radial gap with the device cover 210; and an elastic energy storage element 230 that serves as the slow rotation power.

[0043] like Figure 3 , Figure 4As shown, the drive ring 220 has an annular cavity structure, with its lower bottom surface connected to the upper surface of the rotating ring 02 via a multi-point plug-in connection. Several independent solid evaporation chambers 221 are evenly distributed along the circumference inside. Each solid evaporation chamber 221 has a fan-shaped structure. The drive ring 220 has a central ring 06 at its center, with a through hole at its center. The outer ring is integral with the bottom wall of the drive ring 220. Each solid evaporation chamber 221 has a vent 07 corresponding to the central ring 06. The inner bottom surface of the device cover 210 has a connecting ring 08 that is tightly and rotatably fitted onto the central ring 06. After the device cover 210 is installed, the connecting ring 08 has a connecting hole 09 on its peripheral wall corresponding to the direction of the fixed blocking part 031. Thus, the solid material inside the solid evaporation chamber 221 can only evaporate when the vent 07 rotates to the area matching the connecting hole 09 of the connecting ring 08. A slot 04 is formed in the outer peripheral wall. Inside the solid evaporation chamber 221, relative to the center of the two straight sides of the fan-shaped structure, there is also an eccentrically hinged movable blocking member 222 that can move in an arc along the circumference. After installation, the free end of each movable blocking member 222 extends to one side of the slot 04, and when it rotates around the hinge point, the movable blocking member 222 basically covers the entire space of the solid evaporation chamber 221. Due to the eccentric hinge, the free end of the movable blocking member 222 changes from a longer extension dimension to a shorter extension dimension or vice versa as it rotates. That is, when the movable blocking member 222 moves from one side to the other in the solid evaporation chamber 221, the change in the length of its end extension dimension allows it to periodically engage and disengage from the fixed blocking part 031 described below.

[0044] Each solid evaporation chamber 221 is filled with volatile solid materials such as camphor or naphthalene. The elastic energy storage element 230 is a constant force energy storage spring, preferably a constant force energy storage coil spring, which is wound entirely around the rotating ring 02, with its inner end fixed to the rotating ring 02 and its outer end fixed to the rotating base 03; a fixed blocking part 031 is provided on the rotating base 03 in the direction of the drive ring 220. The fixed blocking part 031 serves as a stationary component. Under the torsional action of the elastic energy storage element 230 and the evaporation and release action of the volatile solid material, each movable blocking part 222 of the drive ring 220 periodically engages with and disengages from the fixed blocking part 031.

[0045] During assembly, each movable blocking member 222 is completely filled with volatile solid material between itself and the outer wall of the solid evaporation chamber. The movable blocking member 222 is lifted by the solid material to form an effective blocking surface. As the solid material gradually evaporates, the supporting position of the movable blocking member 222 gradually changes. When the evaporation reaches a certain level, the movable blocking member 222 disengages from the fixed blocking part 031, achieving rotation of one compartment. After rotation, the next movable blocking member 222 continues to contact the fixed blocking part 031 until the solid material in that compartment evaporates to a certain level and disengages again. This repetitive cycle forms intermittent rotation, achieving continuous and slow rotation of the filter element.

[0046] In some further specific embodiments, a valve mechanism 300 is provided on the passage route from the outside air to the solid evaporation chamber so that evaporation only occurs when the engine is running. This allows for more accurate control of the filter element rotation timing, ensuring that the filter element rotation is synchronized with the engine operating state, avoiding ineffective evaporation when the engine is off, and improving the utilization efficiency of solid materials. Specifically, the valve mechanism 300 includes: a spindle 310 installed in the center of the airflow passage and extending one end to the outside of the device cover 210 and the other end to the first through hole 01; a spindle mounting sleeve 350 for fixing and supporting the spindle 310; a valve plate 320 installed on the spindle 310 and located at the first through hole 01; an elastic element 330 sleeved on the spindle 310; and an adjusting nut 340 located at the top of the device cover 210 for adjusting the elastic force of the elastic element 330. When the engine is running, the airflow pulsations generated by the intake system act on the valve plate 320, overcoming the resistance of the elastic element 330 to open the valve, allowing outside air to enter the solid evaporation chamber 221 and promote the volatilization of solid materials. When the engine stops running, the airflow pulsations disappear, and the elastic force of the elastic element 330 causes the valve plate 320 to close the passage, preventing the solid evaporation chamber 221 from communicating with the outside air and stopping the volatilization process of solid materials. The adjusting nut 340 can adjust the preload of the elastic element 330, thereby controlling the opening sensitivity of the valve mechanism 300.

[0047] In some further specific embodiments, a cutter head 400 is provided on the upper surface of the device casing 210, in front of the fixed blocking part 031 and in the direction of rotation of the drive ring 220. The working part of the cutter head 400 is located in the solid evaporation chamber 221. The outer surface of the volatile solid material is sealed, for example, with a plastic bag. When the drive ring 220 rotates, the sealed packaging of the volatile solid material entering the solid evaporation chamber 221 of the fixed blocking part 031 is broken by the cutter head 400, thereby realizing the timely evaporation and release of the solid material in the solid evaporation chamber 221. This design ensures that the solid material remains sealed before reaching the working position, avoiding material waste caused by premature evaporation, while precisely controlling the start-up timing of each solid evaporation chamber 221, so that the entire drive system operates according to a predetermined sequence and rhythm.

[0048] Work process: I. Main Air Filtration Process Intake Stage: When the engine is running, outside air enters the outer chamber of the air filter through the intake cover 140. Filtration Stage: Air is radially filtered through the cylindrical filter element 120. Delivery Stage: The filtered clean air enters the inner chamber and is delivered to the engine intake manifold through the engine intake pipe 111.

[0049] II. Slow Rotation Process of Filter Element Initial state: Each solid volatilization chamber 221 in the drive ring 220 is filled with volatile solid materials such as camphor or naphthalene. The movable blocking member 222 is lifted by the solid material, and its free end extends out to form abutment with the fixed blocking part 031, preventing the drive ring 220 from rotating. The elastic energy storage element 230 is installed after being set to store energy in advance.

[0050] Evaporation and release: In the solid evaporation chamber 221 corresponding to the fixed blocking part 031, the vent 07 is aligned with the connecting hole 09, and the solid material in the chamber begins to evaporate. As the material gradually decreases and the elastic energy storage element 230 releases torque, the support position of the movable blocking part 222 gradually changes, the free end extension dimension gradually shortens, and the cylindrical filter element 120 rotates extremely slowly at the same time.

[0051] Volatilization by changing grid: When the solid material volatilizes to a certain extent, the movable blocking part 222 disengages from the fixed blocking part 031, and the drive ring 220 and the cylindrical filter element 120 connected thereto rotate one grid.

[0052] Cycle: After rotation, the next movable blocking part 222 comes into contact with the fixed blocking part 031, repeating the above process of evaporation-release-rotation, so as to realize the continuous and slow rotation of the filter element.

[0053] III. Valve Control Process (Optional Configuration) When the engine is running: the airflow pulse generated by the intake system acts on the valve plate 320, which overcomes the resistance of the elastic element 330 to open the valve, and the outside air enters the solid volatilization chamber 221 to promote the volatilization of solid materials.

[0054] When the engine stops: the airflow pulsation disappears, the elastic element 330 pushes the valve plate 320 to close the passage, prevents the outside air from entering, stops the volatilization of solid materials, and avoids unnecessary losses.

[0055] IV. Sealed Packaging Removal Process (Optional) When the drive ring 220 rotates, the sealed package in the solid evaporation chamber 221, which is about to enter the working position, is cut by the cutter head 400, causing the solid material in the chamber to begin to evaporate, ensuring precise timing control.

[0056] Working principle: Refer to all attached diagrams. Figures 1-13This invention employs a design combining the reduction of solid material volatilization volume with pre-stored energy mechanical transmission: the elastic energy storage element 230 pre-stores energy during installation, continuously providing a stable torsional driving force, which is the fundamental power source for the filter element's rotation. Volatilization control release: the slow volatilization process of solid materials such as camphor or naphthalene controls the rhythm of energy release. When the movable blocking member 222 is lifted by the solid material, it forms a mechanical constraint, preventing the release of spring energy; as material volatilization decreases, the constraint gradually weakens, allowing the filter element to rotate extremely slowly under the action of the spring. Filter switching mechanism: when the material volatilizes to a critical point, the movable blocking member 222 completely disengages from the fixed blocking part 031, realizing filter switching. This design transforms the continuous volatilization process into a segmented rotation control.

[0057] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to the embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An air intake filter for an all-terrain vehicle engine, characterized in that, include: Air filter housing (110); A cylindrical filter element (120) is rotatably installed inside the air filter housing (110); A sealed structure that divides the internal space of the air filter housing (110) into an inner chamber and an outer chamber; An air inlet communicating with the outer chamber; A filter element slow rotation drive device (200) includes: The drive ring (220) connected to the cylindrical filter element (120) has multiple solid evaporation chambers (221) inside, each of which is filled with volatile solid material and is provided with a movable blocking element (222). An elastic energy storage element (230) is connected between the cylindrical filter element (120) and the air filter housing (110) and provides rotational driving force; A fixing block (031) is provided on the air filter housing (110); The elastic energy storage element (230) provides the driving force to rotate the cylindrical filter element (120), and the movable blocking member (222) cooperates with the fixed blocking part (031) under the support of the volatile solid material to control the rotation of the cylindrical filter element (120).

2. The all-terrain vehicle engine intake air filter according to claim 1, characterized in that, The cylindrical filter element (120) has an open end and a filter element bottom cover (121) at the other end. The filter element bottom cover (121) has a first through hole (01) for airflow. A rotating ring (02) is fixedly arranged on the outer periphery of the first through hole (01). The drive ring (220) is connected to the rotating ring (02).

3. The all-terrain vehicle engine intake air filter according to claim 2, characterized in that, The movable blocking member (222) is eccentrically hinged to the solid evaporation chamber (221), and the outer peripheral wall of the solid evaporation chamber (221) is provided with a slot (04). The free end of the movable blocking member (222) extends to the outside of the slot (04).

4. The all-terrain vehicle engine intake air filter according to claim 1, characterized in that, The drive ring (220) is an annular cavity structure, and the plurality of solid volatilization chambers (221) are evenly distributed along the circumference.

5. The all-terrain vehicle engine intake air filter according to claim 1 or 4, characterized in that, The drive ring (220) has a central ring (06) at its center, and each solid evaporation chamber (221) has a vent hole (07) corresponding to the central ring (06); the filter element slow rotation drive device (200) also includes a device cover (210), the inner bottom surface of the device cover (210) is provided with a connecting ring (08), the connecting ring (08) is sleeved on the central ring (06) and has a connecting hole (09) in the direction corresponding to the fixed blocking part (031).

6. The all-terrain vehicle engine intake air filter according to claim 1, characterized in that, The elastic energy storage element (230) is a constant force energy storage spring, which is wound around the rotating part of the cylindrical filter element (120). Its inner end is fixed to the cylindrical filter element (120), and its outer end is fixed to the air filter housing (110).

7. The all-terrain vehicle engine intake air filter according to claim 1, characterized in that, It also includes a valve mechanism (300), said valve mechanism (300) comprising: The spindle (310) is installed in the airflow channel; Valve disc (320) is mounted on the spindle (310); An elastic element (330) is sleeved on the mandrel (310); When the engine is running and generates airflow pulsation, the valve plate (320) opens against the resistance of the elastic element (330), allowing outside air to enter the solid evaporation chamber (221); when the engine stops running, the elastic element (330) closes the valve plate (320).

8. The all-terrain vehicle engine intake air filter according to claim 7, characterized in that, The valve mechanism (300) also includes an adjusting nut (340) for adjusting the preload of the elastic element (330).

9. The all-terrain vehicle engine intake air filter according to claim 5, characterized in that, A blade (400) is provided on the outer cover (210) of the device. The working part of the blade (400) extends into the solid evaporation chamber (221). The blade (400) is located in front of the fixed blocking part (031) in the rotation direction of the drive ring (220).

10. A method for repositioning the filter element of an intake air filter for an all-terrain vehicle engine, characterized in that, Includes the following steps: S1: A cylindrical filter element (120) is rotatably installed inside the air filter housing (110) so that external air enters the engine after being filtered by the cylindrical filter element (120); S2: A rotational driving force is applied to the cylindrical filter element (120) through the elastic energy storage element (230); S3: A plurality of solid evaporation chambers (221) filled with volatile solid materials are provided in the drive ring (220) connected to the cylindrical filter element (120), and each of the solid evaporation chambers (221) is provided with a movable blocking member (222); S4: The movable blocking member (222) is supported by the volatile solid material and forms a blocking engagement with the fixed blocking part (031) fixed on the air filter housing (110), thereby restricting the rotation of the cylindrical filter element (120) under the action of the elastic energy storage element (230); S5: As the volatile solid material gradually evaporates, the support position of the movable blocking member (222) changes. When the evaporation reaches a predetermined level, the movable blocking member (222) disengages from the fixed blocking part (031). S6: After the movable blocking member (222) disengages from the fixed blocking part (031), the cylindrical filter element (120) rotates by a predetermined angle under the drive of the elastic energy storage element (230), so that the next movable blocking member (222) forms a new blocking engagement with the fixed blocking part (031). S7: Repeat the above evaporation-detachment-rotation process to achieve intermittent slow rotation of the cylindrical filter element (120), so that the filter surface of the cylindrical filter element (120) is uniformly utilized.

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