CN201291102Y

CN201291102Y - Air filter

Info

Publication number: CN201291102Y
Application number: CNU2008202103958U
Authority: CN
Inventors: 李永胜; 范春斌; 李澍琴
Original assignee: CNR Datong Electric Locomotive Co Ltd
Current assignee: CRRC Datong Co Ltd
Priority date: 2008-10-31
Filing date: 2008-10-31
Publication date: 2009-08-19
Anticipated expiration: 2018-10-31

Abstract

The utility model discloses an air filter which is connected with a ventilation system. The air filter comprises a rear fixing frame, a front fixing frame, filtering materials and a rapid opening-closing spring lock, wherein, the rear fixing frame is provided with a rear frame and a plurality of bar stays which are parallelly arranged on the rear frame in a protrusion way; the front fixing frame is provided with a front frame in a column-shaped cylinder and a plurality of stay rods arranged parallelly; the filter materials are clamped between the front fixing frame and the front fixing frame; and the rapid opening-closing spring lock comprises a clamping hook and a clamping sheet which can be mutually clamped and fixed; wherein, the front fixing frame and the rear fixing frame are mutually embedded; the bar stays of the rear fixing frame are contained in the front fixing frame; the bar stays and the stay rods are mutually crossed to be embedded and are respectively abutted on the filtering materials which are in W shape; and the edges of the filtering materials are pressed and fixed between the front fixing frame and the rear fixing frame. With the structure, the utility model can increase the filtering area and facilitate the replacement of the filtering materials, and is easily dismounted from the ventilation system.

Description

Air filter

Technical Field

The utility model relates to an air cleaner especially relates to a W formula air cleaner, folds into the W type with the filter media through the stay, increases filter area, and it is convenient to change the filter media in addition to easily carry out the dismouting from ventilation system.

Background

An air filter is a device that filters a flow of air to provide high quality air for proper operation of machinery. The prior air filter generally has the defects of small filtering area, low filtering efficiency, inconvenient cleaning and replacement of filter materials, complex disassembly and assembly operations with a ventilation system and the like.

For example, the ventilation equipment of the locomotive is an important equipment for ensuring the normal operation of the locomotive, along with the improvement of the quality of the locomotive, the requirement on the air required by the operation of the locomotive is higher and higher, and the requirement on air filtration is stricter, wherein a secondary ventilation filter and a tertiary ventilation filter are indispensable key parts; the filter material is not easy to disassemble, and is inconvenient to clean and replace. The other type is that the filter material is not washable and is disposable, the filter material is generally flat in a frame, the front and the back of the filter material are provided with the screen plates for supporting the filter material, the structure has the defects, and the problems that the fixed frame and the filter material are replaced and abandoned together, so that great waste is caused, and the maintenance and application cost is improved are solved.

For example, chinese patent No. 86202267 discloses a foldable air filter, which includes a toothed inner insert, wherein a membrane (paper) filter material is folded up and down in a reciprocating manner on the inner insert, and the outer insert is inserted into the gap between teeth of the inner insert to clamp the filter material. The structure has lower ventilation resistance, but the structure is more complex, the components are more and more scattered, and the operation is more complicated when the filter material is replaced. In addition, in practical implementation, certain requirements are also provided for the tooth spacing, once the filter material is processed and formed, the structure of the teeth is difficult to change, and the folded state of the filter material is correspondingly fixed, so that the expansion and application of the filter are limited. In addition, the filter material of the folding type air filter is a membrane (paper) shaped filter material, and the application range is small.

For example, chinese patent No. 90217335.9 discloses a bracket type air filter, which increases the filtering area by the design of a Z-shaped or comb-shaped bracket structure, and simultaneously reduces the structural resistance and improves the overall strength. However, similar to the 86202267 patent, the filter medium of the present patent has many and scattered components, which makes the filter medium replacement more troublesome and requires a certain space between teeth in practice, and the filter medium is designated as filter paper, and the periphery of the filter paper is fixed to the frame by glue.

In addition, in daily production and application, most of the connections between the whole air filter and the ventilation system are screwed or riveted, and when the air filter and the ventilation system need to be disassembled and assembled when filter materials are replaced or other processes are carried out, the operation is troublesome, the efficiency is not high, locking parts are easy to lose, and the cost is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an air cleaner, especially one kind can increase filter area, conveniently changes the filter media to make air cleaner and ventilation system's dismouting more convenient air cleaner.

In order to achieve the above object, the present invention provides an air filter connected to a ventilation system, the air filter including:

the rear fixing frame is provided with a rear framework, a plurality of supporting strips are parallelly and convexly arranged on the rear framework, and two ends of each supporting strip are fixedly connected to two opposite side ends of the rear framework respectively;

the front fixing frame is provided with a front frame in a cylindrical barrel shape, a plurality of support rods arranged in parallel are arranged on the front frame, and two ends of each support rod are fixedly connected to two opposite side walls of the front frame respectively;

the filter material is clamped between the rear fixing frame and the front fixing frame;

the quick opening and closing spring lock comprises a clamping hook and a clamping piece which can be mutually clamped and fixed, and the clamping hook and the clamping piece are respectively arranged on the front fixing frame and the rear fixing frame;

the front fixing frame and the rear fixing frame are mutually embedded, supporting strips of the rear fixing frame are accommodated in the front fixing frame, the supporting strips and the supporting rods are mutually staggered and embedded and respectively abut against the filter material, and the filter material is W-shaped; the edge of the filter material is fixed between the front fixing frame and the rear fixing frame in a pressing mode.

In the air filter, the stays are in the shape of Jiong, one end of each stay abutting against the filter material is located on the same plane, the stay bars are also arranged on the same plane, and the stays and the stay bars are arranged at equal intervals.

In the air filter, the front frame and the rear frame are both rectangular frames, and a plurality of brackets for assisting in fixing the stay are arranged on two opposite side walls of the rear frame.

In the above air filter, at least one handle is provided on the front frame or the rear frame.

The air filter further comprises a plurality of mounting members fixedly connected with the air filter and the ventilation system, and the mounting members are arranged on the front fixing frame or the rear fixing frame.

In the above air filter, the mounting member is a quick-release clip assembly, and the quick-release clip assembly includes:

the clamping nail is arranged on the mounting flange of the air filter in a penetrating mode and provided with a clamping nail head and a clamping nail screw rod, a spiral track is arranged on the clamping nail screw rod, a clamping part is arranged on the upper portion of the spiral track, and the diameter of the clamping part is larger than that of the clamping nail screw rod;

the lock pad is provided with a through hole and can be sleeved on the staple bolt; the diameter of the through hole is matched with that of the clamping screw rod; the lock pad and the staple clip head are respectively positioned at two sides of the mounting flange of the air filter;

the buckle plate is correspondingly arranged on the mounting flange of the ventilation system and comprises a fixed plate fixedly connected with the ventilation system and at least one buckle sheet which is arranged at the upper part of the fixed plate and can elastically deform; be equipped with at least one perforating hole on the fixed plate, be equipped with on the cramp with the perforating hole that sets up on the fixed plate is corresponding, supplies the card hole that the bail wore to establish, be equipped with in the card hole two can with the latch of the spiral track on the bail screw rod cooperation lock solid.

In the air filter, one end of the buckle piece is connected with the first side of the fixing plate through a bent part, and the other end of the buckle piece forms a cantilever end.

In the air filter, a second side of the fixing plate opposite to the bent portion is connected to a stopping portion for limiting the elastic movement of the buckle piece, the stopping portion extends from the fixing plate to the buckle piece, and an extending end portion of the stopping portion bends toward the upper portion of the buckle piece to form a stopping end.

In the air filter, the clamping portion of the clip is an inverted cone ring with a diameter larger than the diameter of the screw of the clip, and the ring faces the head of the clip.

Therefore, the utility model discloses air cleaner has following characteristics and advantage:

1. after the front fixing frame and the rear fixing frame are combined, the supporting strips push against the filter material, and the filter material is folded into a W shape, so that the filter area can be increased, and the dust holding capacity can be increased.

2. The front fixing frame of the filter and the rear fixing frame of the filter are connected through the quick opening and closing spring lock, so that the filter material is easier to clean and replace, and the maintenance workload is reduced.

3. The filter material can be only replaced, and the fixing frame can be repeatedly used, so that the operation and maintenance cost is reduced.

4. Air cleaner installs on ventilation system through quick assembly disassembly bail, makes air cleaner's dismouting more convenient.

Drawings

The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein,

fig. 1A to 1C are schematic views of an air filter of the present invention, wherein fig. 1A is a front view, fig. 1B is a right side view, and fig. 1C is a bottom view;

fig. 2A to 2C are schematic diagrams of a fixing frame at the front of an air filter according to the present invention, wherein fig. 2B is a sectional view taken from B to B of fig. 2A, and fig. 2C is a sectional view taken from a to a of fig. 2A;

fig. 3A to 3C are schematic diagrams of the rear fixing frame of the air filter of the present invention, wherein fig. 3B is a sectional view taken from B to B of fig. 3A, and fig. 3C is a sectional view taken from a to a of fig. 3A;

FIG. 4 is a schematic view of the filter material of the air filter of the present invention;

FIG. 5 is a partial schematic view of the air filter assembled to the ventilation system by the staple assembly;

FIGS. 6A to 6D are a front view, a left side view, a top view and a rear view of a pinch plate of the quick release staple assembly, in that order;

FIG. 7 is a schematic view of the clip plate of the quick release staple assembly secured to the vent system;

FIG. 8 is a schematic view of a staple structure of the quick-release staple assembly of the present invention;

FIG. 9 is a schematic view of a lock pad of the quick release staple assembly;

FIG. 10 is a schematic view of the attachment of the staple and lock pad of the quick release staple assembly to the air filter;

fig. 11 is an enlarged schematic view of the quick opening and closing latch of the air filter of the present invention.

Description of reference numerals:

100 air filter

1 front fixing frame

10 stay bar 11 front frame

12 handle 110 side wall

111 air filter mounting flange

2 rear fixing frame

20 stay 21 rear frame

210 support

3 filter material

4 quick open-close spring lock

41 hook 42 card

5 mounting component

51 buckle

510 fixing plate

5100 fixing part 5101 through hole

5102 first side 5103 second side

511 bent part

512 cramp

5120 fastening hole 5121 fastening tooth

513 stopping part

52 staple

520 spiral track 521 screens portion

53 lock pad

54 ventilating system mounting flange

56 sealing gasket

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.

Referring to fig. 1A to 1C, there are shown schematic views of an air filter of the present invention, in which fig. 1A is a front view, fig. 1B is a right side view, and fig. 1C is a bottom view. As shown in the drawing, the air filter 100 includes a front fixing frame 1 and a rear fixing frame 2, the filter medium 3 is sandwiched between a stay 20 and a stay 10 of the front fixing frame 1 and the rear fixing frame 2, a quick opening and closing latch 4 is used to fixedly connect the front fixing frame 1 and the rear fixing frame 2, a quick mounting and dismounting clip assembly 5 is used to connect the air filter 100 and a ventilation system, and the air filter 100 can be conveniently mounted and dismounted from the ventilation system through the quick mounting and dismounting clip assembly.

Fig. 2A to 2C are schematic views of the front fixing frame of the air filter of the present invention, wherein fig. 2B is a sectional view from B to B of fig. 2A, and fig. 2C is a sectional view from a to a of fig. 2A. As shown in the figures, the filter front fixing frame 1 further includes a front frame 11 in the form of a cylindrical barrel, a brace 10 and a handle 12, in this embodiment, as shown in fig. 2B and 2C, the front frame 11 is rectangular, and is a hollow frame formed by side walls 110, a plurality of braces 10 are arranged between two opposite side walls 110 in parallel, two ends of the brace 10 are respectively fixed to the two side walls 110, and the fixing manner may be screw connection or riveting connection. As shown in fig. 2B and 2C, a plurality of stay bars 10 are disposed on one plane, and the plurality of stay bars 10 are disposed perpendicular to the side wall 110. At least one handle 12 is provided on the front frame 11 to facilitate the operation when the front frame is disassembled, and the arrangement position and the arrangement number of the handles 12 are determined according to the actual needs and are not particularly limited. The front frame 11 may be further provided with an air filter mounting flange 111 for providing a mounting part 5 for integrally mounting the air filter 100 to the ventilating system, and in this embodiment, the mounting part 5 may be a conventional screw bolt or the like, or a quick-release clip assembly, the specific structure and function of which will be described in detail below.

Please refer to fig. 3A to 3C, which are schematic diagrams of the rear fixing frame of the air filter of the present invention, wherein fig. 3B is a sectional view from B to B of fig. 3A, and fig. 3C is a sectional view from a to a of fig. 3A. As shown in the figure, the rear fixing frame 2 of the filter further includes a rear frame 21 and a stay 20, the rear frame 21 is a rectangular frame, a plurality of stays 20 are protruded on the rear frame 21 across the rear frame 21, and two ends of each stay 20 are respectively fixed to two opposite side ends of the rear frame 21, in this embodiment, the stay 20 is shaped like "Jiong", in order to make the connection between the stay 20 and the rear frame 21 more firm, a plurality of brackets 210 for auxiliary fixing the stay 20 are further provided on two opposite side ends of the rear frame 21, as shown in fig. 3B and 3C, one end of each bracket 210 is fixedly connected to the rear frame 21, and the other end is fixed to the stay 20. Like the stay 10 of the front fixing frame 1, one end of the stays 20 protruding out of the rear frame 21 (i.e., one end abutting against the filter medium) is also located on a plane, and the stays 20 are disposed perpendicular to two opposite sides of the frame.

When the front fixed frame 1 and the rear fixed frame 2 are fitted and assembled with each other, the stays 20 of the rear fixed frame 2 are all accommodated in the front fixed frame 1, and the stays 20 and the stay bars 10 are fitted into each other in a staggered manner and are respectively abutted against the filter medium 3, as shown in the sectional portions in fig. 1A, 2A, 3A and 1C, in the present embodiment, the stays 20 of the stay bars 10 of the front fixed frame 1 and the rear fixed frame 2 are all arranged adjacently at equal intervals, and the arrangement positions of the stay bars 10 and the stay bars 20 are in a staggered relationship, so that the stay bars and the stay bars can be in a staggered and fitted arrangement state during assembly, and the formed staggered and fitted arrangement state is also in a staggered and fitted arrangement of the stay bars and the stay bars at equal intervals. Referring to fig. 1A to 1C, fig. 2A to 2C, fig. 3A to 3C and fig. 4, in general, the initial shape of the filter material 3 of the present invention is flat, and when the filter front fixing frame 1 and the filter rear fixing frame 2 are assembled, the supporting bars 20 and the supporting bars 10, which are staggered and embedded with each other, abut against the filter material 3, so that the filter material 3 is W-shaped, thereby increasing the filtering area and the dust holding capacity. When the front fixing frame and the rear fixing frame are assembled and fixed, the edge part of the filter material 3 can be pressed and fixed between the side plate 110 of the front fixing frame 1 and the rear frame 21 of the rear fixing frame 2, and the filter material 3 is fixed by clamping the front fixing frame and the rear fixing frame, so that the filter material 3 can bear larger air flow and has higher strength when filtering the air flow from a ventilation system; in addition, because the filtering part of the utility model is only provided with the stay bar, the stay bar and the filtering material supported by the stay bar, the whole structure resistance is smaller. The utility model discloses a 3 materials of filter media do not restrict, and it can be according to actual need come the filter media of the choice which kind of materials of application to adapt to diversified production application demand.

In the utility model, the front fixing frame 1 and the rear fixing frame 2 are fixedly connected by the existing quick opening and closing spring lock 4, as shown in figure 1B, figure 1C and figure 11, the quick opening and closing latch 4 includes a hook 41 and a locking piece 42, the front fixing frame 1 and the rear fixing frame 2 are fixed together by the engagement of the hook 41 and the locking piece 42, as shown in the figure, the hook 41 of the latch 4 is arranged on the front fixing frame 1, the card 42 is correspondingly arranged on the rear fixing frame 2, when the front part 1 of the fixing frame and the rear part 2 of the fixing frame are assembled with each other, the quick opening and closing spring station 4 enables the hook 41 and the card 42 to be mutually clamped conveniently through the self spring design structure, when the front part 1 and the rear part 2 of the fixed frame are detached, the clamping hook 41 and the clamping piece 42 only need to be separated through the elastic structure, and the operation is very convenient. The positions of the hook 41 and the card 42 can be interchanged according to actual needs, and the number and the positions of the quick opening and closing latch 4 can be adjusted according to actual needs. Through setting up this quick switching spring lock 4, make the fixed frame of front portion 1 and the fixed frame 2 equipment or the dismantlement that can be convenient of rear portion to it is more convenient when making air cleaner change the filter media or carrying out other operations.

It is mentioned above that the front fixing frame is also provided with a mounting part 5, i.e. a new quick-release staple assembly, the specific structure and function of which are described in detail below:

please refer to fig. 5, which is a partial structural view illustrating the air filter assembled to the ventilation system by the quick release clip assembly. As shown in the drawings, the quick-attach and detach staple assembly is composed of three parts, namely, a staple 52, a lock pad 53 and a clip plate 51, wherein in the present embodiment, the staple 52 is inserted into the air filter mounting flange 111, the clip plate 51 is fixed on the ventilation system mounting flange 54, the lock pad 53 is sleeved on the staple 52, and the head of the staple is located on the other side of the air filter mounting flange 111 opposite to the head of the staple.

Referring to fig. 6A to 6D, there are shown a front view, a left side view, a top view and a rear view of a clip plate of the quick release staple assembly. As shown in the figure, the buckle plate 51 includes a fixing plate 510, a through hole 5101 (refer to fig. 7) is provided on the fixing plate 510, and at least two fixing portions 5100 fixed to the mounting flange 54 of the ventilation system are provided, the through hole 5101 is used for the passing of the staple 52, the fixing portions 5100 can be fixed to the mounting flange 54 of the ventilation system by riveting or welding, for example, so as to fix the buckle plate 51, so that the buckle plate 51 cannot fall off the second part 54 and be lost. In this embodiment, two fixing portions 5100 are provided on both sides of the through hole 5101, but the number and the position of the fixing portions 5100 are not limited, and the clip plate 51 may be fixed to the ventilation system mounting flange 54. The fixing plate 510 is provided with at least one elastically deformable buckle piece, in this embodiment, the first side 5102 of the fixing plate 510 is bent to form a buckle piece 512 through a bent portion 511, the other end of the buckle piece 512 forms a cantilever end, the fixing plate 510, the bent portion 511 and the buckle piece 512 are integrally formed, and the buckle piece 512 can be elastically deformed by the connection of the bent portion 511 so as to be close to or far from the fixing plate 510. The buckle piece 512 is provided with a locking hole 5120, the locking hole 5120 is disposed corresponding to the through hole 5101, and two locking teeth 5121 are disposed in the locking hole 5120 and the locking teeth 5121 for locking with the clamp. A stopping portion 513 is disposed on a second side 5103 of the fixing plate 510 opposite to the bending portion 511, the stopping portion 513 extends from the fixing plate 510 to the buckle piece 512, and an extending end portion of the stopping portion 513 is bent toward the upper portion of the buckle piece 512 to form a stopping end, so as to limit a movement space and a force of the buckle piece 512 when the buckle piece is elastically deformed and restored to an original state. Referring to fig. 7, which is a schematic view of the clip plate of the quick release clip assembly being fixed to the ventilation system, as shown, the mounting plate 510 is fixed to the mounting flange 54 of the ventilation system, and the through hole 5101, the clip hole 5120, and the through hole of the second member 54 correspond to each other so that the clip 52 can pass through at the same time.

Referring to fig. 8, a schematic view of the staple structure of the staple assembly of the present invention is shown, in which the staple 52 of the present invention has a staple head and a staple screw, a spiral track 520 and a clamping portion 521 are sequentially disposed on the screw portion from bottom to top, the spiral track 520 is disposed on the lower end portion of the staple screw, and the spiral track 520 is engaged with the latch 5121. In this embodiment, the position-locking portion 521 is an inverted cone with a diameter larger than the diameter of the screw of the staple on the side facing the head of the staple, and is located at the upper part of the spiral track 520.

Referring to fig. 9, which is a schematic view of a lock pad of a quick release staple assembly, a through hole is formed in the middle of the lock pad 53, and the diameter of the through hole matches the diameter of the staple screw. The lock pad 53 has a certain elasticity. In this embodiment, the lock pad 53 is circular.

Referring to fig. 10, a schematic view of a structure in which the staple and the lock pad of the quick-release staple assembly are disposed on the air filter is shown, in which when the staple is installed, the staple head and the lock pad 53 are respectively located on two sides of the mounting flange 111 of the air filter, and the lock pad 53 is located above the positioning portion 521. In this embodiment, the diameter of the retaining portion 521 facing the staple head is larger than the diameter of the reverse taper ring of the staple screw, and the diameter of the through hole of the locking pad 53 matches with the diameter of the staple screw, that is, the diameter of the outermost edge of the retaining portion is larger than the diameter of the through hole of the locking pad 53, so that when the staple moves longitudinally in the through hole of the air filter mounting flange, the retaining portion 521 and the locking pad 53 will have a retaining limit relationship, and the retaining limit relationship can effectively prevent the staple 52 from falling off the air filter mounting flange 111 and causing loss.

Referring to fig. 5, 7 and 10, when the air filter and the ventilation system are assembled, the clip 52 is first inserted through the through holes of the mounting flange 111 and the locking pad 53, and the locking pad 53 has certain elasticity, and the retaining portion 521 on the clip screw is an inverted cone in this embodiment, so that the clip 52 can be inserted through the through hole of the locking pad 53, such that the locking pad 53 and the clip head are respectively located at two sides of the mounting flange of the air filter, and the clip 52 is fixed on the mounting flange of the air filter by the retaining relationship between the retaining portion 521 and the locking pad 53. Then, the buckle plate 51 is riveted or welded to the ventilation system mounting flange 54 through the fixing portion 5100, and the clamping hole 5120, the through hole 5101 and the through hole of the ventilation system mounting flange are correspondingly arranged. Finally, when the air filter and the ventilation system are assembled, in order to enable the joint to be firmer, a layer of sealing gasket 56 is additionally arranged between the air filter mounting flange and the ventilation system mounting flange, and the staple screw penetrates through the air filter mounting flange 111, the locking gasket 53, the through holes in the sealing gasket 56 and the ventilation system mounting flange 54 and the through hole 5101 in the fixing plate 5100 in sequence and is finally locked with the clamping hole. When the air filter is installed, the screw track 520 and the latch 5121 can be matched and locked with each other, so that the latch 52 elastically deforms the buckle piece 512 of the buckle plate 51 through the clamping relationship between the screw track 520 and the latch 5121, the two latches 5121 are locked with the screw track 520, namely the buckle piece 512 elastically deforms and approaches the fixing plate 510, and has a downward pulling acting force on the latch to lock the latch 52, so that the air filter and the ventilation system are connected and fixed, and the assembling operation is completed; reverse rotation bail 52 during the dismantlement, the block of two latches 5121 and spiral track 520 will loosen and take off, two latches 5121 withdraw from the spiral track 520 of bail 52, clip 512 keeps away from fixed plate 510 gradually and resumes the normal position, thereby can realize dismantling air cleaner and ventilation system separation, the installation with dismantle only need rotate the bail can, convenient and fast, and, after the dismantlement finishes, buckle 51 and bail 52 set firmly respectively in ventilation system mounting flange 54 and air cleaner mounting flange 55, like this when the assembly operation next time, just need not to look for again and install bail and buckle, and can avoid losing of bail and buckle.

It is worth mentioning that the mounting part 5 (i.e. the staple or the clip plate included in the quick-release staple assembly) can be mounted on the rear fixing frame 2 as required, in addition to the front fixing frame 1 of the air filter 100, i.e. when the staple is mounted on the ventilation system, the corresponding clip plate can be mounted on the front fixing frame or the rear fixing frame of the air filter; and when the pinch plate is mounted to the ventilation system, the corresponding clip may be mounted to the front fixing frame or the rear fixing frame of the air filter. The mounting position and the number of the quick-attaching and detaching clip assemblies are not limited.

The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention.

Claims

1. An air filter for connection to a ventilation system, the air filter comprising:

2. The air filter of claim 1, wherein the struts are shaped like Jiong, and one end of each strut against the filter material is located on the same plane, the struts are also located on the same plane, and the struts are all equally spaced.

3. The air filter according to claim 1 or 2, wherein the front frame and the rear frame are rectangular frames, and a plurality of brackets for auxiliary fixing the stay are provided on two opposite side walls of the rear frame.

4. The air filter of claim 1, wherein at least one handle is provided on the front frame or the rear frame.

5. The air filter of claim 1, further comprising a plurality of mounting members for securing the air filter to the ventilation system, the mounting members being disposed on the front or rear fixed frame.

6. The air filter of claim 5, wherein the mounting member is a quick-release staple assembly comprising:

7. The air filter of claim 6, wherein one end of the buckle is connected to the first side of the fixing plate by a bent portion, and the other end of the buckle forms a cantilever end.

8. The air filter of claim 6, wherein a stop portion is connected to a second side of the fixing plate opposite to the bent portion to limit the elastic movement of the fastening plate, the stop portion extends from the fixing plate to the fastening plate, and an extending end of the stop portion is bent toward an upper portion of the fastening plate to form a stop end.

9. The air filter of claim 6, wherein the retainer portion of the staple is a reverse tapered ring having a diameter greater than the diameter of the screw of the staple on the side of the ring facing the head of the staple.