Air filter and vehicle

Abstract

The utility model provides an air filter and a vehicle, and belongs to the technical field of vehicles, the air filter comprises an air filter shell, a main filter element and a safety opening and closing valve, an air filter air outlet of the air filter shell is provided with an air guide barrel, and the air guide barrel is arranged in the air filter shell; a connecting sleeve is arranged at the end, facing the air filter air outlet, of the main filter element, and after the main filter element is installed on the air filter shell, the connecting sleeve is coaxially arranged on the air guide barrel in a sleeving mode. The safety opening and closing valve is arranged in the air guide barrel, and the air filter air outlet is opened or closed through power for pushing in or moving out of the main filter element. As the safety opening and closing valve is adopted to replace a safety filter element, when the main filter element is repaired and maintained, dust can be prevented from entering the clean air side of an air inlet system, the effect of protecting an engine is achieved, the repair and maintenance difficulty of the main filter element is greatly reduced, the resistance of the safety filter element to airflow is avoided, and the service life of the main filter element is prolonged. And the service life of the main filter element can be prolonged to a certain extent, and the power performance of an engine can be improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to vehicle technical field, concretely relates to an air cleaner and vehicle. BACKGROUND

[0002] The air cleaner is an important component of the internal combustion engine, and its main function is to filter dust and impurities in the air to provide clean air for the internal combustion engine to reduce engine wear and ensure engine power performance. Off-road vehicles will travel on unpaved roads such as deserts and mountains, and the dust content in the environment is high, so compared with ordinary passenger vehicles, air filter clogging is more likely to occur, resulting in a decrease in engine power performance. In order to ensure the stable operation of the off-road vehicle, the user will clean the air filter during the trip, but due to the problems of the air filter structure itself, the lack of cleanliness in the wild environment, and the improper assembly, etc., the clean air side of the intake system may still enter sand and other impurities, damaging the engine and causing insufficient power output performance.

[0003] The basic structure of the air cleaner usually includes a main filter element and a safety filter element, which are coaxially nested in the main filter element. The main filter element is responsible for removing air impurities brought in by the intake system and is responsible for the main filtering task. The safety filter element acts as a backup filter and provides secondary protection in the event of main filter failure or other unexpected situations to prevent dust from entering the engine. In addition, during engine maintenance, the safety filter element can prevent dirt and other impurities from entering the clean air side of the intake system when the main filter element is removed. This double filtration provides adequate protection for the engine, but also has some problems:

[0004] (1) The maintenance of the main filter element is complex. Since the safety filter element and the main filter element are coaxially nested structures, the axial overlap length is large, and a large maintenance operation space is required for disassembly, making maintenance difficult and inconvenient to disassemble. Moreover, it is easy to cause the main filter element to be improperly assembled, which cannot achieve good sealing, and foreign matter such as sand and impurities from the outside can easily enter the clean air side of the intake system;

[0005] (2) Since the main filter element and the safety filter element have a large axial overlap distance, the replacement stroke is long. When the main filter element is difficult to disassemble, the surrounding parts of the engine compartment need to be disassembled, further increasing the difficulty of maintenance;

[0006] (3) The presence of the safety filter element increases the overall air resistance of the air cleaner, which not only reduces the engine power performance, but also reduces the overall dust holding capacity of the filter element, shortening the service life of the main filter element. INVENTION CONTENTS

[0007] The utility model discloses an air filter and vehicle, aim at solving the problem of big maintenance difficulty of air filter element, and the clean air side of foreign matter very easily enters the air intake system, lead to engine power performance reduction, filter element service life low.

[0008] To achieve the above object, the utility model adopts technical scheme, provide an air filter, including:

[0009] Air filter shell, the air filter shell is provided with the air outlet of air filter shell, and the air outlet of air filter shell is provided with the air outlet of air filter shell.

[0010] Main filter element, the main filter element is provided with the connecting sleeve of one end towards the air outlet of air filter shell, and the main filter element is installed in the air filter shell, and the connecting sleeve is coaxially sleeved on the air outlet of air filter shell.

[0011] Safety opening and closing valve, set up in the air outlet of air filter shell, open or close the air outlet of air filter shell through the power of pushing or moving the main filter element.

[0012] In combination with the first aspect, in a kind of realizable mode, the safety opening and closing valve includes rotary valve plate and drive the drive assembly of the rotary valve plate overturning;The rotary valve plate is rotatably installed in the air outlet of air filter shell by pin shaft, and it has the circumferential surface of adaptation the radial section of the air outlet of air filter shell;The drive assembly is set between the air outlet of air filter shell and the connecting sleeve, and the air outlet of air filter shell is opened or closed by driving the pin shaft and the rotary valve plate;When the plate surface of rotary valve plate is perpendicular to the axis of the air outlet of air filter shell, the rotary valve plate closes the air outlet of air filter shell and in turn closes the air outlet of air filter shell, can avoid the dirty air of outside not filtering into engine;When the plate surface of rotary valve plate is parallel to the axis of the air outlet of air filter shell, then the rotary valve plate opens the air outlet of air filter shell, can guarantee that the air of filtering enters engine.

[0013] In combination with the first aspect, in a kind of realizable mode, the circumferential surface of the rotary valve plate is provided with the first sealing ring. When the rotary valve plate is closed, the first sealing ring is tightly connected with the inner wall of the air outlet of air filter shell. The rotary valve plate is tightly connected with the inner wall of the air outlet of air filter shell by the first sealing ring, prevents the air of not filtering from entering clean air side.

[0014] With reference to the first aspect, in an implementable mode, the driving assembly comprises a rack and a gear engaged with the rack; the gear is mounted on the pin shaft and located outside the air duct; the rack is mounted on the inner wall of the connecting sleeve and extends along the axial direction of the connecting sleeve; when the main filter element is moved out of the air filter shell, the rack drives the gear to rotate so as to close the rotary valve plate; when the main filter element is pushed into the air filter shell, the rack drives the gear to rotate reversely so as to open the rotary valve plate. Since the connecting sleeve is fixed with the main filter element and the rack is fixed on the connecting sleeve, when the main filter element needs to be maintained, the main filter element only needs to be moved out of the air filter shell. During the moving-out process, the connecting sleeve moves together with the movement of the main filter element, and the rack mounted on the inner wall of the connecting sleeve also moves together. Since the rack is engaged with the gear, the axial movement of the rack drives the gear to rotate, and the gear is mounted on the pin shaft and located outside the air duct, and the rotation of the gear causes the rotary valve plate associated with the gear to close, thereby effectively preventing foreign matters from entering the air filter shell when the main filter element is moved out. When the maintenance is completed, the main filter element is pushed back into the air filter shell, at this time, the rack reversely drives the gear to rotate, and the rotary valve plate is re-opened, thereby ensuring the smooth air filtering process.

[0015] With reference to the first aspect, in an implementable mode, an installation groove for mounting the rack is formed on the inner wall of the connecting sleeve, and the installation groove extends along the axial direction of the connecting sleeve, thereby avoiding the interference between the rack and the air duct.

[0016] With reference to the first aspect, in an implementable mode, the rack is hidden in the installation groove, and the gear is accommodated in the installation groove. The rack and the gear can be hidden in the installation groove, thereby avoiding the interference between the rack and the air duct, reducing unnecessary space occupation, and accommodating the gear in the installation groove, thereby not needing to reserve a gap for the gear between the connecting sleeve and the air duct, so that the connecting sleeve and the air duct form a sliding fit relationship, and foreign dust cannot enter the main filter element from between the connecting sleeve and the air duct, thereby ensuring the filtering effect of the main filter element.

[0017] With reference to the first aspect, in an implementable mode, an anti-rotation limiting structure is arranged between the main filter element and the air filter shell; the anti-rotation limiting structure comprises an extension segment of the rack extending along the axial direction towards the air outlet of the air filter, and an anti-rotation groove formed on the outer wall of the air duct, and the extension segment is axially inserted into the anti-rotation groove to limit the rotation of the main filter element. The insertion of the extension segment into the anti-rotation groove plays a guiding, limiting and anti-rotation role for the installation of the main filter element.

[0018] With reference to the first aspect, in an implementable mode, an axial limiting structure is further arranged between the main filter element and the empty filter shell; the axial limiting structure comprises a first axial limiting structure facing the empty filter outlet and a second axial limiting structure away from the empty filter outlet.

[0019] The first axial limiting structure comprises a limiting protrusion arranged on the outer wall of the air duct, and the axial end surface of the connecting sleeve abuts against the axial end surface of the limiting protrusion, thereby constituting the first axial limiting of the connecting sleeve; wherein the anti-rotation groove is arranged on the limiting protrusion.

[0020] The empty filter shell comprises an empty filter cylinder body and an empty filter end cover, and the empty filter end cover and the empty filter outlet are arranged at two ends of the empty filter cylinder body.

[0021] The second axial limiting structure is a limiting boss formed on the inner side surface of the empty filter end cover, and when the empty filter end cover is mounted on the empty filter cylinder body, the limiting boss abuts against the axial end surface of the main filter element.

[0022] By abutting the limiting protrusion and the connecting sleeve and abutting the limiting boss and the axial end surface of the main filter element, the main filter element is effectively limited from two directions. Such axial limiting structure design ingeniously ensures the axial stability of the main filter element in the empty filter shell, avoids axial displacement of the filter element due to vibration or airflow impact during use, ensures that the filter element is always in the correct position, and improves the stability of the filtration system. The design structure of the two-way limiting also simplifies the installation and disassembly process. When the axial end of the main filter element abuts against the limiting protrusion, the first axial limiting structure achieves limiting by abutting the end surfaces of the limiting protrusion and the connecting sleeve, and it can be judged that the main filter element is axially installed in place. Therefore, there is no need to worry about the problem of being unable to judge whether the main filter element is installed in place; the second axial limiting structure achieves limiting by abutting the limiting boss of the empty filter end cover and the end surface of the main filter element. This design makes the installation and disassembly of the main filter element more convenient, reduces the difficulty and time of maintaining and replacing the filter element.

[0023] With reference to the first aspect, in an implementable mode, a second sealing ring is arranged between the connecting sleeve and the air duct. The sealing property between the connecting sleeve and the air duct can be achieved, and unfiltered air is prevented from entering the clean air side, thereby affecting the power performance of the engine.

[0024] The air filter provided by the utility model has the beneficial effects that, compared with the prior art, (1) the original safety filter element is replaced by the safety opening and closing valve, and the safety filter element is not needed, when the main filter element needs to be disassembled for maintenance, the safety opening and closing valve can be closed when the main filter element is removed, the main filter element can be disassembled for maintenance, and dirt and other impurities are prevented from entering the clean air side of the air intake system through the air duct; when the main filter element is installed into the air filter shell, the safety opening and closing valve is opened, so that clean air filtered by the main filter element enters the engine, and the main filter element is simple and convenient to disassemble and maintain; (2) the main filter element is installed and disassembled by only opening the air filter end cover of the air filter shell, the main filter element can be pulled out or pushed in, the air filter end cover is fixed to the air filter cylinder, axial positioning of the main filter element is achieved, the main filter element is simple and convenient to disassemble and install, and interference with peripheral parts of the air filter is avoided, and the difficulty of maintenance is further reduced; (3) the safety opening and closing valve is installed in the air duct, when the main filter element is assembled, the connecting sleeve on the main filter element is coaxially inserted into the air duct in the air filter shell, the air duct abuts against the shaft end of the main filter element, the main filter element can be assembled in place, and then the main filter element is fixed, the main filter element does not need to be axially matched with the safety filter element, the risk that the main filter element is not assembled in place and causes a seal to be not tight, so that foreign matters enter the clean air side, and the power performance of the engine is affected, is avoided; (4) the safety filter element is not arranged in the main filter element, but the safety opening and closing valve is arranged at the air outlet of the air filter, the resistance of the safety filter element to airflow is avoided, airflow flows more smoothly, the power performance of the engine is improved, and the service life of the main filter element is prolonged to a certain extent; (5) the structure of the main filter element plus the safety opening and closing valve is adopted instead of the structure of the main filter element plus the safety filter element, the structure is simple, the safety opening and closing valve is not directly matched with the main filter element, the axial dimension of the safety opening and closing valve is small, and these characteristics are beneficial to reducing the manufacturing cost and use cost of the air filter.

[0025] In a second aspect, the utility model embodiment further provides a vehicle which is provided with the air filter.

[0026] The vehicle provided by the utility model embodiment has the advantages that, the air filter composed of the main filter element and the safety filter element is replaced by the main filter element plus the safety opening and closing valve, when the main filter element is maintained, the main filter element can not only block dust, but also reduce the difficulty of maintenance of the main filter element, the resistance of the safety filter element to airflow is avoided, and the service life of the main filter element is prolonged to a certain extent, and the power performance of the engine is improved. ACCURACY OF DRAWINGS

[0027] Figure 1 The utility model embodiment provides the air filter's three-dimensional structure schematic diagram (exhibition safety opening and closing valve open and close two kinds of state) ;

[0028] Figure 2The utility model provides a top structure schematic drawing (safety open and close valve closing state) of air filter for the embodiment of the utility model,

[0029] Figure 3 For along Figure 2 The sectional structure drawing of A-A line,

[0030] Figure 4 The utility model provides a internal structure schematic drawing (safety open and close valve opening state) of air filter for the embodiment of the utility model,

[0031] Figure 5 The utility model provides a three -dimensional structure schematic drawing (safety open and close valve opening state) of main filter core for the embodiment of the utility model,

[0032] Figure 6 The utility model provides a three -dimensional structure schematic drawing (demonstrates rack) of main filter core for the embodiment of the utility model,

[0033] Figure 7 The utility model provides a three -dimensional structure schematic drawing (safety open and close valve closing state) of connecting sleeve and air deflector,

[0034] Figure 8 For Figure 7 The utility model provides a top structure schematic drawing (safety open and close valve closing state) of connecting sleeve and air deflector,

[0035] Figure 9 For along Figure 8 The sectional structure drawing of B-B line,

[0036] Figure 10 The utility model provides a three -dimensional structure schematic drawing (demonstrates the cooperation of rack and gear) of air deflector for the embodiment of the utility model,

[0037] Mark explanation:

[0038] 1, air filter shell, 2, air filter end cover, 3, air deflector, 31, limiting lug, 4, external interface, 5, rotary valve plate, 6, main filter core, 7, connecting sleeve, 71, installation groove, 8, air filter outlet, 9, rack, 91, extension section, 10, second sealing ring, 11, gear, 12, first sealing ring, 13, limiting boss. Specific implementation

[0039] In order to make the technical problem, technical scheme and beneficial effect that the utility model wants to solve more clearly clear, the following combines the drawing and embodiment, and the utility model is further detailedly explained.It should be understood that the specific embodiment described here is only used to explain the utility model, and is not used to limit the utility model.

[0040] In the present application, terms such as "first", "second" are only used to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, primary and secondary or order relationship between the entities or operations.

[0041] Please see Figures 1 to 10 , now the air filter provided by the utility model is described. The air filter comprises an air filter shell 1, a main filter element 6 and a safety opening and closing valve, a wind guide cylinder 3 is arranged at an air filter outlet 8 of the air filter shell 1, and the wind guide cylinder 3 is arranged inside the air filter shell 1; a connecting sleeve 7 is arranged at one end of the main filter element 6 facing the air filter outlet 8, and after the main filter element 6 is installed on the air filter shell 1, the connecting sleeve 7 is coaxially sleeved on the wind guide cylinder 3; the safety opening and closing valve is arranged in the wind guide cylinder 3, and the air filter outlet 8 is opened or closed by the power of pushing or removing the main filter element 6.

[0042] The air filter provided by the utility model has the beneficial effects that compared with the prior art,

[0043] (1) When the main filter element is maintained, the disassembly is simple and convenient, the safety opening and closing valve is used to replace the original safety filter element in the present application, and a safety filter element does not need to be configured; when the main filter element of the air filter needs to be maintained and disassembled, the safety opening and closing valve can be closed after the main filter element is removed, the main filter element can be disassembled and maintained, and dirt and other impurities are prevented from entering the air intake system through the wind guide cylinder to clean the air side; after the main filter element is installed on the air filter shell, the safety opening and closing valve is opened, so that clean air filtered by the main filter element enters the engine, and the disassembly, maintenance and repair of the main filter element are simple and convenient.

[0044] (2) The installation and disassembly of the main filter element only need to open an air filter end cover of the air filter shell, the main filter element can be pulled out or pushed in, and after the air filter end cover is fixed on the air filter cylinder body, the axial position of the main filter element can be limited, the installation and disassembly of the main filter element are simple and convenient, and interference with peripheral parts of the air filter is avoided, and the difficulty of maintenance and repair is further reduced.

[0045] (3) The wind guide cylinder 3 arranged in the air filter shell 1 provides structural support for the installation of the main filter element 6 and provides installation support for the safety opening and closing valve, and when the main filter element 6 is installed, the end face of the main filter element 6 facing the air filter outlet 8 abuts against the end face of the wind guide cylinder 3 to play a role of assembly limiting.

[0046] The safety opening and closing valve is installed in the air guide cylinder 3, when the main filter element 6 is assembled, the connecting sleeve 7 on the main filter element 6 is coaxially inserted into the air guide cylinder 3 in the air filter shell 1, the air guide cylinder 3 abuts against the axial end of the main filter element 6, the main filter element 6 can be assembled in place, and then the main filter element 6 is fixed, the main filter element 6 does not need to be axially matched with the safety filter element, the risk that the clean air side enters foreign matters due to the main filter element 6 not being assembled in place and the sealing being not tight is avoided, and the power performance of the engine is avoided from being affected.

[0047] The air filter inlet is generally arranged in the radial direction of the air filter shell 1, the air filter outlet 8 is arranged in the axial direction of the air filter shell 1, the center lines of the air filter inlet and the air filter outlet 8 are perpendicular to each other, the air guide cylinder 3 is an extension of the air filter outlet 8 into the air filter shell 1 and also has the function of guiding the airflow to be discharged from the air filter outlet 8, the air entering through the air filter inlet is filtered by the main filter element 6, enters the air guide cylinder 3 through the opened safety opening and closing valve, and is discharged from the air filter outlet 8.

[0048] (4) The safety filter element is not arranged in the main filter element 6, but the safety opening and closing valve is arranged at the air filter outlet 8, the resistance of the safety filter element to the airflow is avoided, the airflow in the air filter flows more smoothly, the air permeability of the main filter element 6 is improved, and the power performance of the engine is improved, and the service life of the main filter element 6 is also prolonged to a certain extent.

[0049] (5) The structure of the main filter element 6 plus the safety filter element is not adopted in the application, but the structure of the main filter element 6 plus the safety opening and closing valve is adopted, the structure is simple, the safety opening and closing valve does not directly match with the main filter element 6, the axial dimension of the safety opening and closing valve is small, and these characteristics are beneficial to the reduction of the manufacturing cost and the use cost of the air filter.

[0050] In the application, the air guide cylinder 3 can be integrally formed in the air filter main shell, can be welded and fixed in the air filter main shell, or can be fixed in the air filter main shell by bolts or clamping.

[0051] In the application, the connecting sleeve 7 can be fixed on the main filter element 6 by bolts or clamping, and the connecting sleeve and the main filter element move synchronously.

[0052] The term "axial direction" in the claims, the description and the above drawings refers to the axial direction of the main filter core 6, in the present application, the axial line of the main filter core 6 is coaxial with the axial line of the empty filter shell 1, the air guide cylinder 3 and the connecting sleeve 7 are coaxial with the main filter core 6; the term "radial direction" refers to the diameter direction of the main filter core 6, in the present application, the diameters of the main filter core 6, the empty filter shell 1, the air guide cylinder 3, the connecting sleeve 7 and the rotary valve plate 5 are parallel; the term "circumferential direction" or circumferential surface is a circumferential surface formed by concentric circles with the point on the axial line of the main filter core 6 as the center. And only for the convenience of describing the present application and simplifying the description, and not indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as limiting the specific protection range of the present application.

[0053] In some embodiments, referring to Figures 3 to 10 , the safety opening and closing valve comprises a rotary valve plate 5 and a driving assembly for driving the rotary valve plate 5 to flip; the rotary valve plate 5 is rotatably installed in the air guide cylinder 3 through a pin shaft and has a circumferential surface matching the radial section of the air guide cylinder 3; the driving assembly is arranged between the air guide cylinder 3 and the connecting sleeve 7 and drives the rotary valve plate 5 to rotate through a driving pin shaft to open or close the air filter outlet 8. When the plate surface of the rotary valve plate 5 is perpendicular to the axial line of the air guide cylinder 3, the rotary valve plate 5 closes the air guide cylinder 3 and in turn closes the air filter outlet 8, so that the unclean air outside can be prevented from entering the engine without being filtered; when the plate surface of the rotary valve plate 5 is parallel to the axial line of the air guide cylinder 3, the rotary valve plate 5 opens the air filter outlet 8, so that the filtered air can enter the engine.

[0054] In some embodiments, referring to Figure 9 , a first sealing ring 12 is arranged on the circumferential surface of the rotary valve plate 5, and the first sealing ring 12 is in close contact with the inner wall of the air guide cylinder 3 when the rotary valve plate 5 is closed. When the rotary valve plate 5 is closed, the first sealing ring 12 arranged on the circumferential surface is in elastic contact with the inner wall of the air guide cylinder 3, forming a seal to prevent unfiltered air from entering the clean air side.

[0055] The first sealing ring 12 can be a layer of rubber layer or silica gel layer glued on the circumferential surface of the rotary valve plate 5 and having elasticity, or a rubber layer integrally vulcanized on the circumferential surface of the rotary valve plate 5, or an annular groove arranged on the circumferential surface of the rotary valve plate 5, and the first sealing ring is tightly fitted in the annular groove. The first sealing ring rotates with the rotary valve plate 5 and can be tightly fitted with the inner wall of the air guide cylinder 3 through elastic pressing.

[0056] In some embodiments, referring to Figures 7 to 10As shown, the driving assembly comprises a rack 9 and a gear 11 engaged with the rack 9; the gear 11 is mounted on the pin shaft and located outside the air duct 3; the rack 9 is mounted on the inner wall of the connecting sleeve 7 and extends along the axial direction of the connecting sleeve 7; when the main filter element 6 is moved out of the empty filter housing 1, the gear 11 is driven to rotate by the rack 9, so as to make the rotary valve plate 5 closed; when the main filter element 6 is pushed into the empty filter housing 1, the gear 11 is reversely driven to rotate by the rack 9, so as to make the rotary valve plate 5 opened.

[0057] Since the connecting sleeve 7 is fixed with the main filter element 6, and the rack 9 is fixed on the connecting sleeve 7, when the main filter element 6 needs to be maintained, it only needs to be moved out of the empty filter housing 1. During the moving-out process, with the movement of the main filter element 6, the connecting sleeve moves together, and the rack 9 mounted on the inner wall of the connecting sleeve also moves. Since the rack 9 is engaged with the gear 11, the axial movement of the rack 9 drives the gear 11 to rotate, and the gear 11 is mounted on the pin shaft and located outside the air duct 3, and such rotation makes the rotary valve plate 5 associated with the gear closed, thereby effectively preventing foreign matters from entering the inside of the empty filter housing when the main filter element 6 is moved out. When the maintenance is completed, the main filter element 6 is pushed back into the empty filter housing 1, at this time, the rack 9 reversely drives the gear 11 to rotate, and the rotary valve plate 5 is re-opened, thereby ensuring the smooth air filtering process.

[0058] The application adopts the driving mode of the gear 11 cooperating with the rack 9, and the movement of the rack can be realized by externally pushing the main filter element 6, thereby driving the gear 11 engaged with the rack 9 to rotate, and further driving the rotary valve plate 5 to rotate. The application also utilizes the self-locking function of the gear 11 engaged with the rack 9, and the rotary valve plate 5 needs to be driven by external force to rotate and open, and thus when the rotary valve plate 5 is opened or in the closed state, the rotary valve plate 5 can be prevented from rotating at will. By designing the modulus of the rack 9 and the gear 11, the opening angle of the rotary valve plate 5 can be designed, thereby ensuring the normal opening and closing of the safety valve.

[0059] The application also provides other alternative embodiments of the driving assembly, which adopts a spring auxiliary driving scheme, and the specific implementation scheme is as follows: the driving assembly comprises a push block mounted on the pin shaft, a torsion spring sleeved on the pin shaft and limited on the outer wall of the guide cylinder and the push block at two ends, and a fixed block fixed on the inner wall of the connecting sleeve. When the main filter element is moved out, the torsion spring drives the rotary valve plate to close under the action of the reset elastic force; when the main filter element is pushed in, the fixed block pushes the push block, the push block drives the torsion spring to twist, and simultaneously drives the pin shaft to rotate, and the rotary valve plate is opened.

[0060] The application also provides other optional embodiments of the driving assembly, which adopts a double-gear meshing driving scheme, and the implementation scheme is as follows: the driving assembly comprises two meshing gears, one of which is mounted on the pin shaft as a passive gear, and the other of which is mounted in the mounting groove of the guide cylinder as a driving gear. When the main filter element is moved out, the driving gear drives the passive gear, and the rotary valve plate is closed; when the main filter element is pushed in, the driving gear drives the reverse passive gear in the reverse direction, and the pin shaft is rotated, the rotary valve plate is opened, and the opening and closing of the rotary valve plate are realized.

[0061] In some embodiments, referring to Figure 6 , the inner wall of the connecting sleeve 7 is provided with a mounting groove 71 for mounting the rack 9, and the mounting groove 71 extends along the axial direction of the connecting sleeve 7. This can avoid the interference between the rack 9 and the air guide cylinder 3.

[0062] In some embodiments, referring to Figures 5 to 10 , the rack 9 is hidden in the mounting groove 71, and the gear 11 is accommodated in the mounting groove 71. In this way, the rack 9 and the gear 11 can be hidden in the mounting groove 71, which can avoid the interference between the rack and the air guide cylinder and reduce unnecessary space occupation. By accommodating the gear in the mounting groove, a gap for the gear between the connecting sleeve and the air guide cylinder is not needed, so that the connecting sleeve and the air guide cylinder can form a sliding fit, and dust from the outside cannot enter the main filter element between the connecting sleeve and the air guide cylinder, thereby ensuring the filtering effect of the main filter element.

[0063] When the rack 9 protrudes from the inner wall of the connecting sleeve 7, the gap between the connecting sleeve 7 and the air guide cylinder 3 is increased. At this time, an axial shallow groove for avoiding the rack 9 can be provided on the outer wall of the air guide cylinder 3. When the main filter element 6 is installed, the rack 9 is aligned with the axial shallow groove for installation, which also plays a role in guiding and limiting the installation of the main filter element 6 and preventing the rotation of the main filter element 6.

[0064] In some embodiments, referring to Figures 5 to 10 , a rotation-preventing limiting structure is arranged between the main filter element 6 and the air filter housing 1; the rotation-preventing limiting structure comprises an extended section 91 of the rack 9 extending in the axial direction towards the air filter outlet 8, and a rotation-preventing groove provided on the outer wall of the air guide cylinder 3, and the extended section 91 is axially inserted into the rotation-preventing groove to limit the rotation of the main filter element 6. When the main filter element 6 is installed, the end of the rack 9 is first inserted into the rotation-preventing groove, which not only plays a role in guiding and limiting the installation of the main filter element 6, but also prevents the rotation of the main filter element 6. After the extended section 91 of the rack is inserted into the rotation-preventing groove, the main filter element 6 is pushed into the air filter housing 1, and the main filter element 6 is installed in place, which is simple and convenient to install.

[0065] In some embodiments, referring to Figures 7 to 10, the axial limiting structure includes a first axial limiting structure facing the air filter outlet 8 and a second axial limiting structure away from the air filter outlet 8; the first axial limiting structure includes a limiting protrusion 31 arranged on the outer wall of the air guide cylinder 3, and the axial end surface of the connecting sleeve 7 abuts against the axial end surface of the limiting protrusion 31, constituting the first axial limiting of the connecting sleeve 7; wherein the anti-rotation groove is arranged on the limiting protrusion 31; the air filter shell 1 includes an air filter cylinder body and an air filter end cover 2, and the air filter end cover 2 is separately arranged at the two ends of the air filter cylinder body with the air filter outlet 8; the second axial limiting structure is a limiting boss 13 (see Figure 3 ) formed on the inner side surface of the air filter end cover, and when the air filter end cover is installed on the air filter cylinder body, the limiting boss 13 abuts against the axial end surface of the main filter core 6.

[0066] According to the above embodiment, the anti-rotation limiting structure can also be composed of two limiting protrusions arranged on the outer wall of the air guide cylinder, and the specific implementation scheme is that an anti-rotation groove is formed between the two limiting protrusions.

[0067] The second axial limiting structure can also be a cross-shaped rib formed on the inner side surface of the air filter end cover 2, which abuts against the axial end surface of the main filter core 6 to achieve limiting.

[0068] The first axial limiting structure can also rely on the abutment of the air guide cylinder and the main filter core in the axial direction to achieve limiting.

[0069] Through the abutment of the limiting protrusion and the connecting sleeve, and the abutment of the limiting boss 13 and the axial end surface of the main filter core, the main filter core is effectively limited from two directions. Such axial limiting structure design ingeniously ensures the axial stability of the main filter core in the air filter shell, avoids axial displacement of the filter core due to vibration or airflow impact during use, ensures that the filter core is always in the correct position, and improves the stability of the filtering system. The design structure of the two-way limiting also simplifies the installation and disassembly process: when the axial end of the main filter core abuts against the limiting protrusion in the axial direction, the first axial limiting structure achieves limiting through the abutment of the end surfaces of the limiting protrusion and the connecting sleeve, so it can be judged that the main filter core is installed in place, so there is no need to worry about the problem of being unable to judge whether the main filter core is installed in place; the second axial limiting structure achieves limiting through the abutment of the limiting boss 13 of the air filter end cover and the end surface of the main filter core.

[0070] This design makes the installation and disassembly of the main filter core more convenient, reducing the difficulty and time of maintenance and replacement of the filter core. The installation and disassembly of the main filter core only need to open the air filter end cover of the air filter shell, and then the main filter core can be pulled out or pushed in. After the air filter end cover is fixed on the air filter cylinder body, the axial limiting of the main filter core is achieved. The installation and disassembly of the main filter core are simple and convenient, and there is no interference with the surrounding parts of the air filter, further reducing the difficulty of maintenance.

[0071] The design can prevent the axial displacement of the main filter element during the operation of the equipment, thereby ensuring the normal air filtration. Moreover, the anti-rotation groove is arranged on the limiting protrusion, which does not affect the axial limiting function and can be related to the assembly or operation guide of other components, thereby improving the assembly efficiency and reliability of the air filter. In the actual production process, the manufacturing tolerance needs to be strictly controlled to ensure the accurate cooperation between the components. For example, the height of the limiting protrusion and the height of the limiting protrusion need to be accurately designed according to the axial length of the main filter element. If the error is too large, the axial limiting function will be invalid or the main filter element will be difficult to install. At the same time, during the installation of the air filter end cover 2 and the air filter cylinder body, attention should be paid to ensure the accurate position of the limiting protrusion to avoid damage to the main filter element during installation.

[0072] When the main filter element 6 is installed, the end of the rack 9 is first inserted into the anti-rotation groove, which has the functions of guiding and anti-rotation limiting for the installation of the main filter element 6. When the axial end of the main filter element 6 axially abuts against the limiting protrusion 31, it can be judged that the main filter element 6 is axially installed in place, so there is no need to worry about whether the main filter element 6 is installed in place. Among them, a limiting protrusion can be provided, and an anti-rotation groove can also be provided in the middle of the limiting protrusion.

[0073] Alternatively, the driving assembly can also be two meshing gears 11. Through the meshing gears 11, the self-locking function of the rotary valve plate 5 can be realized, and the opening and closing states of the rotary valve plate 5 are ensured not to be accidentally rotated.

[0074] In some embodiments, referring to Figure 3 and Figure 4 , a second sealing ring 10 is arranged between the connecting sleeve 7 and the air duct 3. The sealing performance between the connecting sleeve 7 and the air duct 3 is ensured. Because the connecting sleeve 7 and the air duct 3 are in sliding fit, there must be a gap between them, which will cause unfiltered air to enter the air duct 3 from the gap. Through the arrangement of the sealing ring, the sealing performance between the two can be realized, and the unfiltered air is prevented from entering the clean air side, thereby affecting the power performance of the engine.

[0075] The installation mode of the second sealing ring 10 can be an annular groove arranged on the inner wall of the connecting sleeve 7, and the outer wall of the air duct 3 is in elastic abutment interference fit.

[0076] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described or recorded in a certain embodiment can be referred to the related description of other embodiments.

[0077] Based on the same inventive concept, the embodiment of the application further provides a vehicle provided with the air filter.

[0078] The vehicle provided by the embodiment of the utility model, since the main filter element 6 and the safety opening and closing valve are adopted to replace the air filter composed of the main filter element 6 and the safety filter element, not only the function of protecting the engine when the main filter element 6 is maintained can be ensured, but also the difficulty of maintaining the main filter element 6 is greatly reduced, the resistance of the safety filter element to the airflow is avoided, the service life of the main filter element can be prolonged to a certain extent, and the engine power performance is improved.

[0079] The above only describes the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An air cleaner characterized by comprising: The application relates to an air filter housing (1) provided with a wind guide cylinder (3) at an air filter outlet (8) of the air filter housing (1), a main filter core (6) provided with a connecting sleeve (7) at one end of the main filter core (6) and arranged in the air filter housing (1), and a safety opening and closing valve arranged in the wind guide cylinder (3) and opened or closed by the power of pushing or moving the main filter core (6) out of the air filter housing (1). The safety opening and closing valve comprises a rotary valve plate (5) and a driving assembly for driving the rotary valve plate (5) to rotate, the rotary valve plate (5) is rotatably arranged in the wind guide cylinder (3) through a pin shaft and has a circumferential surface matched with the radial section of the wind guide cylinder (3), and the driving assembly is arranged between the wind guide cylinder (3) and the connecting sleeve (7) and drives the rotary valve plate (5) to rotate through the pin shaft to open or close the air filter outlet (8). A first sealing ring (12) is arranged on the circumferential surface of the rotary valve plate (5) and tightly contacts the inner wall of the wind guide cylinder (3) when the rotary valve plate (5) is closed. The driving assembly comprises a rack (9) and a gear (11) engaged with the rack (9), the gear (11) is arranged on the pin shaft and located outside the wind guide cylinder (3), the rack (9) is arranged on the inner wall of the connecting sleeve (7) and extends along the axial direction of the connecting sleeve (7), the gear (11) is driven to rotate by the rack (9) when the main filter core (6) is moved out of the air filter housing (1) to make the rotary valve plate (5) closed, and the gear (11) is reversely driven to rotate by the rack (9) when the main filter core (6) is pushed into the air filter housing (1) to make the rotary valve plate (5) opened.

2. The air cleaner of claim 1, wherein An installation groove (71) for installing the rack (9) is formed in the inner wall of the connecting sleeve (7) and extends along the axial direction of the connecting sleeve (7).

3. The air cleaner of claim 2, wherein The rack (9) is hidden in the installation groove (71) and the gear (11) is arranged in the installation groove (71).

4. The air cleaner of claim 2, wherein Anti-rotation limiting structures are arranged between the main filter core (6) and the air filter housing (1), the anti-rotation limiting structures comprise an extension section (91) of the rack (9) extending along the axial direction towards the air filter outlet (8) and an anti-rotation groove arranged on the outer wall of the wind guide cylinder (3), and the extension section (91) is axially inserted into the anti-rotation groove to limit the rotation of the main filter core (6).

5. The air cleaner of claim 4, wherein Axial limiting structures are also arranged between the main filter core (6) and the air filter housing (1), the axial limiting structures comprise a first axial limiting structure towards the air filter outlet (8) and a second axial limiting structure away from the air filter outlet (8).

6. The air cleaner of claim 5, wherein ​ 7. The air cleaner of claim 4, wherein ​ 8. The air cleaner of claim 7, wherein ​ The first axial limiting structure comprises a limiting protrusion (31) arranged on the outer wall of the air duct (3), and the axial end face of the connecting sleeve (7) abuts against the axial end face of the limiting protrusion (31), thereby forming the first axial limitation of the connecting sleeve (7); wherein the anti-rotation groove is arranged on the limiting protrusion (31); The air filter shell (1) comprises an air filter cylinder body and an air filter end cover (2), and the air filter end cover (2) is arranged at two ends of the air filter cylinder body separately from the air filter outlet (8); The second axial limiting structure is a limiting boss (13) formed on the inner side face of the air filter end cover (2), and when the air filter end cover (2) is installed on the air filter cylinder body, the limiting boss (13) abuts against the axial end face of the main filter core (6).

9. The air cleaner of claim 1, wherein The second sealing ring (10) is arranged between the connecting sleeve (7) and the air duct (3).

10. A vehicle characterized by comprising: The air filter is provided with any one of claims 1-9.

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