CN221333338U - Air cleaner convenient to change filter core - Google Patents

Abstract

The utility model relates to an air filter convenient for replacing a filter element, which comprises a shell and a cylindrical filter element arranged in the shell, wherein an opening is formed in the side wall of the shell, an access cover is covered on the side wall of the shell, a pair of or two pairs of sliding rails extending along the inlet and outlet directions of the opening of the side wall of the shell are fixed in the shell, and each pair of sliding rails are oppositely arranged on the same horizontal plane; the filter element is detachably connected with one or two anchor clamps, and the anchor clamps are detachably connected to the upper end and/or the lower end of the filter element and are in sliding connection with a corresponding pair of sliding rails. The utility model can solve the technical problems of inconvenient replacement and long replacement time when the filter element of the air filter is replaced in the prior art.

Description

Air cleaner convenient to change filter core

Technical Field

The utility model relates to the technical field of filter devices, in particular to an air filter with a filter element convenient to replace.

Background

The air filter is equipment for capturing dust from gas-solid two-phase flow through the action of a porous filtering material and purifying gas; the air with low dust content is purified and then sent into room to ensure the technological requirement of clean room and the air cleanliness in common air-conditioning room.

Generally, an air filter mainly includes a housing, a cylindrical filter element mounted in the housing, an air inlet and an air outlet provided in the housing, and an access cover mounted to repair, detach and replace the filter element through the access cover. The cartridge generally comprises a core and a protective sleeve for protecting the core.

However, in the actual disassembly and assembly process, the disassembly and assembly are inconvenient and the disassembly and assembly time is long due to factors such as the weight of the filter element, small operation space between the filter element and the shell, and the like. For example, when the air filter used in the engineering is replaced, weekends are generally selected for replacement, so that the engineering construction time is further prolonged, and a plurality of continuous weekends are needed for construction, so that the engineering progress is influenced.

Disclosure of utility model

Aiming at the technical problems that the filter element of the air filter is inconvenient to replace and the replacement time is long in the prior art, the utility model provides the air filter which is convenient for replacing the filter element.

The technical scheme for solving the technical problems is as follows:

The utility model provides an air cleaner convenient to change filter core, includes casing and installs the tube-shape filter core in the casing, casing lateral wall opening and lid are equipped with the access cover, be fixed with in the casing along the casing lateral wall opening business turn over direction extend a pair of or two pairs of slide rails, every pair of slide rail is relative to setting up on same horizontal plane; the filter element is detachably connected with one or two anchor clamps, and the anchor clamps are detachably connected to the upper end and/or the lower end of the filter element and are in sliding connection with a corresponding pair of sliding rails.

The beneficial effects of the utility model are as follows: when maintenance and replacement are needed, the access cover is opened, the filter element can be quickly taken out of the shell through a sliding connection mode between the anchor ear and the sliding rail and can be quickly installed in the shell, and in the process of applying force to the filter element, the anchor ear is only required to be applied to force, so that the possibility of damage to the filter element caused by direct force application is avoided, and the problems of inconvenience in disassembly and long disassembly time caused by the fact that the weight of the filter element, the operation space between the filter element and the shell are small and the like in the actual disassembly and assembly process are improved.

On the basis of the technical scheme, the utility model can be improved as follows.

Furthermore, locating pieces are fixed on the inner side of the shell, the number of the locating pieces is equal to that of the anchor ears, and the locating pieces are arranged in a one-to-one correspondence manner; the locating piece is including being fixed in the fixed plate of casing and the mounting panel of being fixed in the casing, the inside cavity setting of mounting panel is towards one side opening of fixed plate the opening part sliding connection of mounting panel has the locating plate still be equipped with at least one spring in the locating plate, the both ends of spring respectively with mounting panel inner wall with the locating plate butt, staple bolt joint is between locating plate and fixed plate.

The beneficial effects of adopting the further scheme are as follows: when pushing the filter core into the casing to realize the installation, the staple bolt joint is between locating plate and fixed plate, guarantees the installation stability of filter core.

Further, the locating plate is provided with an arc-shaped groove for clamping the anchor ear in towards one side of the fixing plate, and one side of the locating plate towards the filter element is provided with a guide surface.

The beneficial effects of adopting the further scheme are as follows: when the filter element is pushed into the shell to be mounted, the anchor ear is contacted with the guide surface, so that the spring is stressed and contracted, the positioning plate and the fixing plate are separated, and the anchor ear enters the arc-shaped groove to be clamped.

Further, the staple bolt includes two hoop boards, two lead screws and four nuts, two the hoop board encircles in the filter core, just the both ends of hoop board all extend there is the otic placode, two the lead screw wears to locate two respectively the hoop board both ends are relative two the otic placode, and every the both ends of lead screw all threaded connection has the nut, the lead screw adaptation is in the arc wall.

The beneficial effects of adopting the further scheme are as follows: when the filter element is pushed into the shell to be mounted, one screw rod is in contact with the guide surface, so that the spring is stressed and contracted, the positioning plate and the fixing plate are separated, and one screw rod enters the arc-shaped groove to be clamped; in the process of disassembling and assembling the filter element, only force is applied to the other screw rod, so that the problems of inconvenience in disassembly and assembly and long disassembly and assembly time caused by small operation space between the filter element and the shell are solved.

Further, the hoop plate is fixed with a stress plate, and the stress plate is abutted to the outside of the axial end part of the filter element.

The beneficial effects of adopting the further scheme are as follows: the gravity of the filter element is born by the stress plate, so that the filter element is stably installed.

Further, the locating plate is provided with an avoidance groove for the access of the lug plate.

The beneficial effects of adopting the further scheme are as follows: by the arrangement of the avoidance groove, the screw rod is ensured to smoothly enter the arc-shaped groove.

Further, two pairs of sliding rails are arranged, and the two pairs of sliding rails are respectively arranged on an upper horizontal plane and a lower horizontal plane; the two anchor clamps are arranged and are respectively fixed at the upper end and the lower end of the filter element, and the two anchor clamps are respectively abutted to one side of the two pairs of slide rails, which are opposite.

The beneficial effects of adopting the further scheme are as follows: the vertical limit is indirectly formed on the filter element by utilizing the slide rails on the upper horizontal plane and the lower horizontal plane, so that the stability is ensured.

Further, the slide rail is connected with the limiting plate, the limiting plate butt is in staple bolt side.

The beneficial effects of adopting the further scheme are as follows: and the two opposite limiting plates on the same horizontal plane are utilized to indirectly limit the filter element in the horizontal direction.

Further, a flexible layer is provided on the inner sidewall of the housing.

The beneficial effects of adopting the further scheme are as follows: when the filter element is laterally applied, the flexible layer can be deformed under pressure, so that a working space is formed conveniently.

Further, sealing layers are arranged on the inner sides of the upper end wall and the lower end wall of the shell, and the sealing layers are abutted to the upper end and the lower end of the filter element in the axial direction.

The beneficial effects of adopting the further scheme are as follows: so as to ensure the filtering effect of the filter element by utilizing the sealing layer.

Drawings

FIG. 1 is an isometric view of the present utility model;

FIG. 2 is a first partial schematic view of the present utility model, mainly illustrating the mounting relationship of the sliding rail and the filter element;

FIG. 3 is a second partial schematic view of the present utility model, primarily showing the mounting relationship of the cartridge and the positioning member;

FIG. 4 is an enlarged schematic view of the portion A in FIG. 3;

Fig. 5 is a schematic view of a partial cross-sectional structure of the present utility model, mainly showing the positioning member.

In the drawings, the list of components represented by the various numbers is as follows:

1. A housing; 11. an access cover; 12. an air inlet; 13. an air outlet;

2. A filter element;

3. A slide rail; 31. a limiting plate;

4. A hoop; 41. a hoop plate; 411. a force-bearing plate; 42. a screw rod; 43. a nut;

5. A positioning piece; 51. a fixing plate; 52. a mounting plate; 53. a positioning plate; 531. an arc-shaped groove; 532. a guide surface; 533. an avoidance groove; 54. a spring;

6. a flexible layer;

7. And (3) a sealing layer.

Detailed Description

The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.

Example 1

As shown in fig. 1 and 2, an air filter for facilitating replacement of a filter cartridge includes a housing 1 and a cylindrical filter cartridge 2 mounted in the housing 1; the shell 1 is of a three-dimensional structure (such as a cuboid) with an inner cavity, an air inlet 12 is formed in one side, an air outlet 13 is formed in the top, an access hole is formed in the side wall of the other side of the shell 1, an access cover 11 is adapted to the access hole, and a handle is fixed on the access cover 11 so as to overhaul, detach and replace the filter element 2 through the access cover 11; the filter element 2 is arranged in the inner cavity of the shell 1 through an access hole and is communicated with the air outlet 13, air enters from the air inlet 12, and after being filtered by the filter element 2, the air is discharged from the air outlet 13 from the inner cavity of the filter element 2. The filter core comprises a core body and a protective sleeve for protecting the core body.

In the embodiment of the utility model, a pair or two pairs of sliding rails 3 extending along the in-out direction of the opening of the side wall of the shell 1 are fixed in the shell 1, and each pair of sliding rails 3 are oppositely arranged on the same horizontal plane; the filter element 2 is detachably connected with one or two hoops 4, and the hoops 4 are detachably connected with the upper end and/or the lower end of the filter element 2 and are slidably connected with a corresponding pair of sliding rails 3.

The beneficial effects of this embodiment are: when the filter element 2 is required to be overhauled and replaced, the access cover 11 is opened, the filter element 2 can be quickly taken out from the shell 1 through a sliding connection mode between the anchor ear 4 and the sliding rail 3, and can be quickly installed in the shell 1 after replacement, and in the process of applying force to the filter element 2, the anchor ear 4 is only required to be applied to the filter element 2, so that the possibility of damage caused by directly applying force to the filter element 2 is avoided, and the problems of inconvenience in disassembly and long disassembly time caused by the factors of small operation space between the filter element 2 and the shell 1 in the actual disassembly and assembly process are solved.

The anchor ear 4 is specifically detachably connected to the protective sleeve of the filter element 2.

When the anchor ear 4 is provided with one anchor ear, and the anchor ear 4 is detachably connected with the lower end of the filter element 2, the anchor ear 4 is correspondingly and slidably connected with the upper side of the sliding rail 3; when the anchor ear 4 is provided with one, and anchor ear 4 can dismantle the upper end of connecting in filter core 2, offered draw-in groove (not shown in the figure) in the downside of this corresponding slide rail 3, anchor ear 4 is provided with the fixture block of sliding connection in this draw-in groove, realizes the slip.

When the two hoops 4 are arranged, the two hoops 4 are respectively arranged at the two axial ends of the filter element 2, namely the upper end and the lower end of the filter element 2 in the figure. At this time, the hoop 4 at the upper end of the filter element 2 may be abutted against the lower side of the slide rail 3, or may be connected by sliding the above-mentioned clamping block into the clamping groove.

Example 2

As shown in fig. 2 and 3, on the basis of embodiment 1, positioning members 5 are further fixed on the inner side of the housing 1, and the number of the positioning members 5 is equal to the number of the anchor ears 4 and is set in a one-to-one correspondence. The locating piece 5 comprises a fixed plate 51 fixed on the shell 1 and a mounting plate 52 fixed on the shell 1, wherein the mounting plate 52 is hollow and faces to one side opening of the fixed plate 51, a locating plate 53 is slidably connected to the opening of the mounting plate 52, at least one spring 54 is further arranged in the locating plate 53, two ends of the spring 54 are respectively abutted to the inner wall of the mounting plate 52 and the locating plate 53, and the anchor ear 4 is clamped between the locating plate 53 and the fixed plate 51.

The beneficial effect of adopting the preferred scheme in the above-mentioned embodiment is that, when pushing filter core 2 into in 1 the realization installation, staple bolt 4 joint is between locating plate 53 and fixed plate 51, guarantees filter core 2's installation stability, and then guarantees filter core 2 and the stable intercommunication of gas outlet 13. The filter core 2 is pushed into the shell 1, and the anchor ear 4 can be clamped between the positioning plate 53 and the fixed plate 51, so that repeated adjustment and air tightness checking are not needed, the time is saved, and the convenience is improved.

As a specific arrangement scheme, when one hoop 4 is arranged, one positioning piece 5 is arranged, and the two positioning pieces are positioned on the same horizontal plane; when the anchor ear 4 is provided with two, the locating pieces 5 are provided with two, are corresponding one by one, and are respectively arranged on the upper horizontal plane and the lower horizontal plane.

And as a preferred arrangement the positioning member 5 is arranged on the inner side of the housing 1 opposite the access cover 11.

Specifically, a sliding hole is formed in the mounting plate 52, one end of the positioning plate 53 is slidably connected to the sliding hole, and the other end extends to the fixing plate 51; the spring 54 is disposed in the slide hole, and both ends thereof are respectively abutted against the hole bottom of the slide hole and the positioning plate 53, and the positioning plate 53 is slid toward the fixing plate 51 by the spring 54 and abutted against the fixing plate 51.

Further, the sliding hole is a stepped hole, and the positioning plate 53 is slidably connected to one end of the sliding hole and is adapted to the stepped hole, so as to prevent the sliding hole and the stepped hole from being separated from each other.

Example 3

As shown in fig. 3 to 5, in the embodiments 1 and 2, an arc groove 531 into which the clamping hoop 4 is clamped is formed in the side of the positioning plate 53 facing the fixing plate 51, and a guide surface 532 is formed in the side of the positioning plate 53 facing the filter element 2.

The beneficial effect of adopting the preferred scheme in the above-mentioned embodiment is that, when pushing filter core 2 into casing 1 and realizing the installation, staple bolt 4 and guide face 532 contact for locating plate 53 keeps away from fixed plate 51 and slides, and spring 54 atress shrink, locating plate 53 and fixed plate 51 separate, and staple bolt 4 enters into arc groove 531, afterwards, compressed spring 54 extends, and locating plate 53 slides in the opposite direction towards fixed plate 51, with staple bolt 4 joint in arc groove 531, realizes the joint.

As a specific solution of the above embodiment, the arc-shaped groove 531 may be a circular groove, an elliptical groove, or a groove structure in which a circular groove is combined with an inclined surface, which has an angle of less than 180 °.

Example 4

As shown in fig. 2 and 3, on the basis of embodiments 1-3, the anchor ear 4 includes two hoop plates 41, two screw rods 42 and four nuts 43, the two hoop plates 41 encircle the filter element 2, and are specifically detachably connected to the protective sleeve of the filter element 2, the two ends of the hoop plates 41 are all extended with ear plates, the two screw rods 42 are respectively arranged at the two opposite ends of the two hoop plates 41 in a penetrating manner, the two ends of each screw rod 42 are respectively connected with the nuts 43 in a threaded manner, and the screw rods 42 are adapted to the arc-shaped grooves 531.

The beneficial effect of adopting the preferred scheme in the embodiment is that when the filter element 2 is pushed into the shell 1 to realize installation, one screw rod 42 contacts with the guide surface 532, so that the spring 54 is stressed and contracted, the positioning plate 53 and the fixing plate 51 are separated, and one screw rod 42 enters into the arc-shaped groove 531 to realize clamping; in the process of disassembling and assembling the filter element 2, only the other screw rod 42 needs to be applied with force, so that the problems of inconvenience in disassembly and assembly and long disassembly and assembly time caused by small operation space between the filter element 2 and the shell 1 are solved.

Specifically, the end of the screw rod 42 enters the arc-shaped groove 531, and when the end of the screw rod 42 is clamped in the arc-shaped groove 531, the end of the screw rod 42 is simultaneously abutted against the groove surfaces of the fixing plate 51 and the arc-shaped groove 531, so that the screw rod 42 is prevented from moving in the arc-shaped groove 531, and the stability of the filter element 2 is further ensured.

Further, a plurality of nuts 43 are provided at one end of the lead screw 42, and a spacer is provided between the nuts 43 and the ear plate.

Example 5

As shown in fig. 2 and 3, on the basis of embodiments 1 to 4, the collar plate 41 is fixed with a force plate 411, and the force plate 411 abuts against the outside of the axial end of the filter element 2.

The beneficial effect of adopting the preferred scheme in the embodiment is that the gravity of the filter element 2 is born by the stress plate 411, so that the installation stability of the filter element 2 is ensured.

The stress plate 411 may be an arc-shaped plate with the same or similar shape as the hoop plate 41, or may be a plurality of plates arranged at intervals.

Example 6

As shown in fig. 3 and 4, based on embodiments 1 to 5, the positioning plate 53 is provided with a avoiding groove 533 for the entrance and exit of the ear plate.

The beneficial effect of adopting the preferred scheme in the embodiment is that the screw 42 is ensured to smoothly enter the arc groove 531 by utilizing the arrangement of the avoiding groove 533.

Example 7

As shown in fig. 2 and 3, on the basis of embodiments 1 to 6, two pairs of slide rails 3 are provided, and the two pairs of slide rails 3 are respectively provided on upper and lower horizontal planes; the two hoops 4 are arranged and respectively fixed at the upper end and the lower end of the filter element 2, and the two hoops 4 are respectively abutted to one side of the two pairs of sliding rails 3 in opposite directions.

The beneficial effects of adopting the preferred scheme in the embodiment are that, utilize slide rail 3 on two upper and lower horizontal planes to form vertical spacing to filter core 2 indirectly, guarantee stability.

Example 8

As shown in fig. 2 and 3, on the basis of embodiments 1-7, the slide rail 3 is connected with a limiting plate 31, the limiting plate 31 is abutted against the side surface of the anchor ear 4, and the limiting plate 31 is parallel to the slide rail 3.

The beneficial effect of adopting the preferred scheme in the embodiment is that two limiting plates 31 which are opposite on the same horizontal plane are utilized to indirectly limit the filter element 2 in the horizontal direction.

Specifically, the limiting plate 31 is welded to the slide rail 3.

Further, one end of the sliding rail 3 close to the access cover 11 is bent, specifically that one end of the sliding rail 3 close to the lower end of the filter element 2 close to the access cover 11 is bent downwards to form an inclined plate, and one end of the sliding rail 3 close to the upper end of the filter element 2 close to the access cover 11 is bent upwards to form an inclined plate, so that the filter element 2 is placed on the sliding rail 3 smoothly.

Further, the end of the limiting plate 31, which is close to the access cover 11, is bent towards and close to the inner wall of the housing 1, so that the filter element 2 can slide on the sliding rail 3 smoothly to guide the filter element.

Example 9

As shown in fig. 2, on the basis of examples 1-8, a flexible layer 6 is provided on the inner side wall of the housing 1.

The beneficial effect of adopting the preferred scheme in the embodiment is that when the filter element 2 is laterally applied, the flexible layer 6 can be pressed and deformed, so that a working space is formed conveniently.

In particular, the flexible layer 6 may be a cotton material.

Example 10

As shown in fig. 2, in the embodiments 1 to 9, sealing layers 7 are provided on the inner sides of the upper and lower end walls of the casing 1, and the sealing layers 7 are abutted against the upper and lower ends of the filter element 2 in the axial direction.

The beneficial effect of adopting the preferred scheme in the embodiment is that the sealing layer 7 is utilized to ensure the filtering effect of the filter element 2.

Specifically, the sealing layer 7 may be a cotton material, a rubber material, or the like.

Further, the end of the sealing layer 7 near the access cover 11 is provided with a bevel, so that when the filter element 2 is slid into the housing 1, a guiding action for the filter element 2 is formed by the bevel, and the sealing layer 7 is deformed by compression during the sliding of the filter element 2.

Further, one end of the sealing layer 7, which is close to the filter element 2, is in a ring shape which is adaptive to a circular structure formed on the inner side of the hoop 4, and the inner side of the ring is used for exhausting air through the air outlet 13, so that the sealing layer 7 is enabled to enter the hoop 4 after being deformed and is abutted against the filter element 2, and a sealing effect is formed.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. The air filter is characterized in that a pair of or two pairs of sliding rails (3) extending along the inlet and outlet directions of the side wall opening of the shell (1) are fixed in the shell (1), and each pair of sliding rails (3) are oppositely arranged on the same horizontal plane; the filter element (2) is detachably connected with one or two anchor clamps (4), and the anchor clamps (4) are detachably connected to the upper end and/or the lower end of the filter element (2) and are in sliding connection with a corresponding pair of sliding rails (3).

2. The air filter with the filter element convenient to replace according to claim 1, wherein positioning pieces (5) are further fixed on the inner side of the shell (1), and the number of the positioning pieces (5) is equal to that of the hoops (4) and is set in a one-to-one correspondence manner; the locating piece (5) is including being fixed in fixed plate (51) of casing (1) and being fixed in mounting panel (52) of casing (1), mounting panel (52) inside cavity setting and orientation one side opening of fixed plate (51) the opening part sliding connection of mounting panel (52) has locating plate (53) still be equipped with at least one spring (54) in locating plate (53), the both ends of spring (54) respectively with mounting panel (52) inner wall with locating plate (53) butt, staple bolt (4) joint is between locating plate (53) and fixed plate (51).

3. An air filter facilitating replacement of a filter cartridge according to claim 2, characterized in that an arc-shaped groove (531) into which the anchor ear (4) is clamped is provided on a side of the positioning plate (53) facing the fixing plate (51), and a guide surface (532) is provided on a side of the positioning plate (53) facing the filter cartridge (2).

4. An air cleaner convenient for replacing a filter element according to claim 3, wherein the anchor ear (4) comprises two anchor ear plates (41), two screw rods (42) and four nuts (43), the two anchor ear plates (41) encircle the filter element (2), the two ends of the anchor ear plates (41) are extended, the two screw rods (42) are respectively penetrated in the two opposite two ear plates at the two ends of the anchor ear plates (41), the two ends of each screw rod (42) are connected with the nuts (43) in a threaded manner, and the screw rods (42) are adapted to the arc-shaped grooves (531).

5. An air filter facilitating replacement of a filter cartridge according to claim 4, wherein the collar plate (41) is fixed with a force plate (411), the force plate (411) being abutted against the outside of the axial end of the filter cartridge (2).

6. An air filter facilitating replacement of a filter cartridge according to claim 4, wherein the positioning plate (53) is provided with a relief groove (533) for the access of the ear plate.

7. An air filter facilitating replacement of a filter cartridge according to any one of claims 1 to 6, wherein two pairs of slide rails (3) are provided, and the two pairs of slide rails (3) are respectively provided on upper and lower horizontal planes; the two hoops (4) are arranged and fixed at the upper end and the lower end of the filter element (2) respectively, and the two hoops (4) are respectively abutted to one side of the two pairs of sliding rails (3) opposite to each other.

8. An air filter facilitating filter element replacement according to claim 7, wherein the slide rail (3) is connected with a limiting plate (31), and the limiting plate (31) is abutted against the side face of the anchor ear (4).

9. An air filter facilitating replacement of a filter cartridge according to any one of claims 1 to 6, characterised in that the inner side wall of the housing (1) is provided with a flexible layer (6).

10. An air filter facilitating replacement of a filter cartridge according to any one of claims 1 to 6, wherein sealing layers (7) are provided on the inner sides of the upper and lower end walls of the housing (1), and the sealing layers (7) are abutted against the upper and lower ends of the filter cartridge (2) in the axial direction.