CN216726349U - Filter device - Google Patents

Abstract

The utility model discloses a filtering device, which comprises a main body part and a filter element component; the main part has the installation cavity that holds filter element group spare, and the main part includes the base and the net lid on the base is located to the lid, is provided with at least one rack that is used for fixed filter element group spare on the inner wall of net lid and/or base, and filter element group spare is including being the folding filter core that the rugosity set up and be used for maintaining the unchangeable adhesive tape of folding filter core shape on folding filter core, and the upper and lower both ends of main part all are provided with the air vent rather than shape looks adaptation. The utility model realizes the rapid disassembly and assembly of the folding filter element by arranging the rack which is matched with the shape of the folding filter element on the net cover and/or the base; and, the utility model discloses a block subassembly is connected screen cover and base, need not to use extra connecting piece to fix the two, makes things convenient for the dismouting, all is provided with the air vent of great bore on screen cover and the base, has improved filter equipment's filtration efficiency greatly.

Description

Filter device

Technical Field

The utility model relates to an air filtration technical field especially relates to a filter equipment.

Background

Along with the gradual improvement of the living standard of people, the appeal of people to the quality of life is higher and higher. Many homes are beginning to use air purification devices to improve the residential environment. Most of these air cleaning devices employ a folded filter element to enhance the filtering effect. After the filter element works for a long time, a large amount of impurities are easily deposited on the filter element. Thus, the filter cartridge needs to be periodically removed by a user and then cleaned or replaced.

The prior art provides a plastic filter screen, which includes a lower cover, an upper cover and a filter element. The filter element is clamped between the lower cover and the upper cover after being folded. When the filter element needs to be detached for cleaning or replacement, the clamping parts of the filter element and the plastic filter screen need to be detached in sequence, which wastes time and labor. And when the filter core needs to be installed again, the user needs to align the clamping position of the filter core and the plastic filter screen in sequence and then install the filter core and the plastic filter screen, and great burden is also caused to the user. In addition, the upper cover and the lower cover of the technology control the connection state of the upper cover and the lower cover through a rotary switch, and the user still has inconvenience in use.

Therefore, it is necessary to design a filtering device with simple structure, convenient assembly and disassembly of the filter element, and quick assembly and disassembly of the screen cover and the base of the filter screen.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problems, the utility model provides a filter device, which connects the net cover and the base through a plurality of clamping components, thus facilitating the disassembly and assembly without additional connecting pieces for fixing the net cover and the base; in addition, pass through the adhesive tape with folding filter core and fix in advance to be provided with the long rack that suits with folding filter core shape on net cover and/or base, can directly be connected folding filter core and long rack counterpoint, with quick with folding filter core dismouting.

In order to achieve the above object, the utility model adopts the following technical scheme:

a filter device comprises a main body part and a filter element component; the main body part is provided with a mounting cavity for accommodating the filter element assembly, the main body part comprises a base and a mesh cover arranged on the base in a covering manner, at least one rack is arranged on the inner wall of the mesh cover and/or the base,

the filter element component comprises a folding filter element arranged in a folding shape and an adhesive tape arranged on the folding filter element and used for maintaining the shape of the folding filter element unchanged;

the upper end and the lower end of the main body part are both provided with vent holes matched with the shape of the main body part.

Furthermore, the net cover is detachably or rotatably connected with the base;

the net cover comprises a first filtering part and a first outer frame arranged on the periphery of the first filtering part, and the base comprises a bottom plate, a peripheral wall arranged on the bottom plate and a square groove formed by the bottom plate and the peripheral wall in a surrounding mode;

the vent holes are arranged in a square structure and are respectively arranged on the first filtering part and the bottom plate.

Furthermore, folding filter core includes a plurality of V type portions that connect gradually, being close to of rack one side of folding filter core is provided with the joint tooth, adjacent two form between the joint tooth and be used for holding the tooth's socket of V type portion.

Furthermore, the net cover is arranged in a square structure, at least one first long rack is arranged at the bottom end of the net cover, the base is matched with the net cover in shape, and at least one second long rack corresponding to the first long rack in position is arranged at the top end of the base;

the bottom of first long rack has set gradually a plurality of first joint teeth along its length direction, the top of second long rack has set gradually a plurality of second joint teeth along its length direction, adjacent two form between the second joint tooth and be used for acceping the second tooth's socket of first joint tooth, the second tooth's socket with the shape of first joint tooth is the same.

Furthermore, the first long racks are arranged into two groups, the two groups of first long racks are arranged along the length direction of the net cover and symmetrically arranged at the upper end and the lower end of the inner wall of the net cover, first protruding structures are arranged at the left end and the right end of the inner wall of the net cover, the first protruding structures are arranged along the width direction of the net cover, and the first long racks are located between the two groups of first protruding structures;

the two groups of second long racks are symmetrically arranged at the upper end and the lower end of the inner wall of the second outer frame, and the positions of the second long racks correspond to the positions of the first long racks; the upper end and the lower end of the base are symmetrically provided with second protruding structures along the length direction of the base, the second protruding structures are located on the outer side of the second long rack, so that first containing grooves are formed between the second long rack and the second protruding structures, and the two first containing grooves are respectively used for containing edge portions of the upper end and the lower end of the folding filter element.

Further, both ends are provided with the protruding structure of third along its width direction symmetry about the base, the long rack of second is located two sets ofly between the protruding structure of third, and two sets ofly keeping away from of the protruding structure of third the one end of the long rack of second is provided with the protruding structure of fourth side by side, the protruding structure of third with form between the protruding structure of fourth and be used for holding the second holding tank of first protruding structure.

Further, both ends symmetry is provided with a plurality of spouts about the internal perisporium of base, a plurality of racks are two sets of edges the fourth long rack that the length direction of base set up side by side, two that bilateral symmetry set up the spout corresponds respectively and holds the both ends about the fourth long rack, the fourth long rack with spout sliding connection.

Furthermore, a first square bulge is arranged on the inner wall of the net cover along the annular direction, and a second square bulge is arranged on the inner wall of the base along the annular direction; and a first pressing groove for accommodating the first square bulge is formed between the second square bulge and the inner peripheral wall of the base.

Furthermore, the net cover is detachably connected with the base through a clamping component; the block subassembly including set up in along circumference in a plurality of joints of the internal perisporium of screen cover protruding, set up in along circumference in a plurality of joint grooves of the internal perisporium of base and respectively correspond with the buckle of connection can be dismantled in a plurality of joint grooves, a plurality of joint archs correspond the card respectively and arrange in a plurality of joint inslot.

Furthermore, the clamping groove is matched with the clamping bulge in shape, and a clamping column is arranged in the clamping groove along the length direction of the clamping groove;

the bottom end of the buckle is provided with a column groove for accommodating the clamping column, the upper part of the buckle is provided with a buckling piece, and the buckling piece is connected with a buckling groove arranged at the top end of the net cover.

Furthermore, the net cover is detachably connected with the base through a slide fastener component; the sliding buckle component comprises a clamping hook arranged at the bottom end of the net cover, a clamping part arranged on the peripheral wall of the base and a switch board in sliding connection with the clamping part;

the switch board has an open state and a closed state; the pothook is the setting of L type structure, the bottom of pothook with be in the off-state the switch board joint.

Further, the engaging portion includes a sliding portion provided on an inner peripheral wall of the base and an opening portion provided on an outer peripheral wall of the base, the sliding portion communicating with the opening portion;

the switch plate is accommodated in the sliding part and is connected with the sliding part in a sliding way, and a limiting bulge is arranged on the outer end face of one end of the switch plate; the limiting bulge is accommodated in the opening part and slides back and forth in the opening part; the switch board is far away from the end of the limiting bulge and is clamped with the clamping hook.

Furthermore, the lower end of the inner peripheral wall of the net cover is provided with an upper rotating bulge, the upper end of the inner peripheral wall of the net cover is provided with an upper rotating groove, an upper rotating column is arranged in the upper rotating groove, and the bottom end of the upper rotating bulge is provided with an upper circular groove;

a lower rotating groove is formed in one end, close to the upper rotating protrusion, of the inner peripheral wall of the base, a lower rotating column connected with the upper circular groove in a rotating mode is arranged in the lower rotating groove, a lower rotating protrusion is arranged at one end, close to the upper rotating groove, of the inner peripheral wall of the base, and a connecting cavity is formed in the outer side wall of the lower rotating protrusion; the connecting cavity is used for accommodating a connecting bulge arranged at the lower part of the rotating part, and the upper part of the rotating part is provided with a lower circular groove which is rotatably connected with the upper rotating column.

Furthermore, a third square bulge and a fourth square bulge are arranged on the inner wall of the base along the circumferential direction; a second pressing groove is formed between the fourth square protrusion and the third square protrusion, and a fifth square protrusion contained in the second pressing groove is arranged on the inner wall of the net cover in the circumferential direction.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a filter equipment passes through multiunit block subassembly with the screen cover and is connected with the base, makes things convenient for the dismouting, and need not extra connecting piece and fixes the two. In addition, pass through the adhesive tape with folding filter core and fix in advance to be provided with the long rack that suits with folding filter core shape on net cover and/or base, can directly be connected folding filter core and long rack counterpoint, with quick with folding filter core dismouting, it is more convenient during the dismouting, reduce operation personnel's intensity of labour. In addition, existing filters are typically made from nonwoven or paper borders that are glued together to prevent air leakage. And the utility model discloses a repeatedly usable frame guarantees the gas tightness of frame through the block between each rack to reduce gluey use, be favorable to environmental protection. Furthermore, the utility model discloses a screen cover all is the frame rack construction setting with the base to all be provided with the air vent of great bore above that, improved filter equipment's filtration efficiency greatly.

Drawings

Fig. 1 is a schematic structural view of embodiment 1 of the filtering apparatus of the present invention;

fig. 2 is a schematic view of a pleated filter element according to example 1 of the filtering device of the present invention;

fig. 3 is an exploded schematic view of embodiment 1 of the filtration apparatus of the present invention;

fig. 4 is a schematic structural view of a mesh cover of embodiment 1 of the filtering device of the present invention;

FIG. 5 is a schematic view of a portion of the area A in FIG. 3;

FIG. 6 is an enlarged partial schematic view of region B of FIG. 4;

fig. 7 is a schematic structural view of a buckle according to embodiment 1 of the present invention;

fig. 8 is a schematic structural view of embodiment 2 of the filtering apparatus of the present invention;

fig. 9 is an exploded schematic view of embodiment 2 of the filtration device of the present invention;

FIG. 10 is an enlarged partial view of the area C of FIG. 9;

fig. 11 is a schematic structural view of a mesh cover of embodiment 2 of the filtering apparatus of the present invention;

fig. 12 is a schematic structural view of a base of embodiment 3 of the filtering apparatus of the present invention;

fig. 13 is a schematic structural view of another perspective of the base of embodiment 3 of the filter device of the present invention;

fig. 14 is a schematic structural view of a mesh cover of embodiment 3 of the filtering device of the present invention;

fig. 15 is a schematic view of a rotating member according to embodiment 3 of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the aspects of the present invention are shown in the drawings, and other details not relevant to the present invention are omitted.

In addition, it is also to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Example 1

As shown in fig. 1 to 2, the present embodiment provides a filter device 100, which includes a main body and a filter element assembly disposed in the main body, wherein the filter element assembly can filter air flowing through the main body. The filter element assembly comprises a folding filter element 40 arranged in an accordion shape and a rubber strip 41 arranged on the folding filter element 40 and used for maintaining the shape of the folding filter element 40 unchanged. The filter core sets up the surface area that the folded form structure can increase the filter core, improves the filtration efficiency of filter core. Specifically, the adhesive tape 41 is attached to the top of the pleated filter element 40 in a direction perpendicular to the fold line of the pleated filter element 40 to fix the folded shape of the pleated filter element 40 for the subsequent removal and installation of the pleated filter element 40. The main part includes base 20 and the net lid 10 of lid on locating base 20, and net lid 10 passes through the block subassembly with base 20 and is connected, makes things convenient for the dismouting, and need not extra connecting piece and fix the two, the cost is reduced.

As shown in fig. 2 to 5, the net cover 10 is provided in a square structure, and includes a first filter portion having a vent hole 15 and a first outer frame provided at the outer periphery of the first filter portion. The ventilation holes 15 are arranged in a square structure and are matched with the shape of the first filtering part. The vent hole 15 has a large diameter, and can increase the air flow rate. The upper and lower ends of the inner wall of the net cover 10 are provided with first long racks 11. First long rack 11 sets up along the length direction of screen cover 10, and both ends all are provided with first protruding structure 12 about the inner wall of screen cover 10, and first protruding structure 12 sets up along the width direction of screen cover 10, and first long rack 11 is located between two sets of first protruding structures 12.

The base 20 is matched with the shape of the mesh cover 10 to ensure that the mesh cover 10 and the base 20 can be connected in an aligned manner. The base 20 includes a bottom plate, a peripheral wall provided on the bottom plate, and a square groove surrounded by the bottom plate and the peripheral wall, the square groove being used for accommodating the folding filter element 40 and the like. Accordingly, the base 20 includes a second filter unit having the vent holes 15 arranged in a square structure and a second outer frame disposed at the outer periphery of the second filter unit. The upper end and the lower end of the inner wall of the second outer frame are provided with second long racks 21, and the positions of the second long racks 21 correspond to the positions of the first long racks 11. Specifically, the first long rack 11 has a plurality of first engaging teeth, the second long rack 21 has a plurality of second engaging teeth, a second tooth groove for accommodating the first engaging teeth is formed between two adjacent second engaging teeth, and the second tooth groove has the same shape as the first engaging teeth, so as to ensure that the first long rack 11 and the second long rack 21 can be connected in an aligned manner. In the present embodiment, the first engaging teeth are provided in a V-shaped configuration.

So set up, through set up first long rack 11 and the long rack 21 of second on screen cover 10 and base 20 respectively, first long rack 11 is connected with the long rack 21 cooperation of second to compress tightly folding filter core 40 between the two, can guarantee the gas tightness of filter screen. In addition, a plurality of sets of short racks 13 are arranged at the bottom end of the net cover 10, so that the folding filter element 40 can be supported, and the folding filter element 40 is prevented from deforming when in use.

As shown in fig. 2 to 5, the folding filter element 40 includes a plurality of V-shaped portions connected in sequence, and the length of the folding filter element 40 is greater than the lengths of the first long rack 11 and the second long rack 21. The V-shaped part is formed by folding the filter element layer by layer. The shape of V type portion and second tooth's socket looks adaptation, and the junction of two adjacent V type portions holds in the second tooth's socket for folding position department card of folding filter core 40 is arranged in the tooth's socket of first long rack and the long rack junction of second. Particularly, the arrangement of the rubber strips 41 can ensure that the shape of the V-shaped portion of the folding filter element 40 is kept fixed, so as to realize the pre-fixing of the folding filter element 40, when the folding filter element 40 is directly placed on the second long rack 21, the V-shaped portion of the folding filter element 40 is automatically clamped in the second tooth grooves of the second long rack 21 in a one-to-one correspondence manner, the V-shaped portion is not required to be aligned with each second tooth groove, and the assembling time of the folding filter element 40 is greatly saved. At this moment, the edge portions of the two ends of the folding filter element 40 are respectively located at the left side and the right side of the second long rack 21, when the net cover 10 is correspondingly covered on the base 20, the first clamping teeth of the first long rack 11 are clamped in the second tooth grooves of the second long rack 21 in a one-to-one correspondence manner, the folding portion of the folding filter element 40 is compressed, and meanwhile, the first protruding structures 12 at the two sides of the first long rack 11 are correspondingly compressed at the edge portions at the two ends of the folding filter element 40.

Preferably, the glue strip 41 is provided at the position of the edge of the folded filter insert 40. With such an arrangement, when the net cover 10 is clamped with the base 20, the rubber strip 41 is accommodated in the accommodating space formed by the first outer frame and the second outer frame, so that the aesthetic degree of the filter device 100 is ensured, and the filtering efficiency of the folding filter element 40 is not affected.

As shown in fig. 5, in some embodiments, the upper and lower ends of the base 20 are symmetrically provided with second protrusion structures 26 along the length direction thereof. Because the width of the folding filter element 40 is greater than the distance between the two sets of second long racks 21, when the folding filter element 40 is in a compressed state, the upper and lower ends of the folding filter element 40 are respectively located at the outer sides of the second long racks 21. The second protrusion structure 26 is located outside the second long rack 21 to form a first receiving groove with the second long rack 21. First holding tank is used for holding folding filter element 40's upper and lower both ends, realizes compressing tightly of folding filter element 40's upper and lower both ends.

The left end and the right end of the base 20 are symmetrically provided with third protruding structures 24 along the width direction, the second long rack 21 is located between the two sets of third protruding structures 24, and the ends of the two sets of third protruding structures 24 far away from the second long rack 21 are provided with fourth protruding structures 25 side by side. A second receiving groove for receiving the first protruding structure 12 is formed between the third protruding structure 24 and the fourth protruding structure 25. When the base 20 is connected to the net cover 10, the first protrusion structures 12 press the left and right ends of the pleated filter element 40 into the second receiving grooves, respectively, so as to compress the pleated filter element 40.

So set up, through set up multiunit protruding structure on lid 10 and base 20, can be when lid 10 and base 20 are connected, protruding structure staggered connection each other, and then compress tightly border department of folding filter core 40.

As shown in fig. 7 and referring to fig. 4 to 6, in some embodiments, the fastening assembly includes a plurality of fastening protrusions 14 circumferentially disposed on the inner circumferential wall of the mesh cover 10, a plurality of fastening grooves 22 circumferentially disposed on the inner circumferential wall of the base 20, and fasteners 30 detachably connected to the plurality of fastening grooves 22 respectively. The clamping protrusions 14 are correspondingly clamped in the clamping grooves 22, so that the mesh cover 10 is connected with the base 20 in an aligned manner, and the mesh cover 10 is fixed with the base 20 through the fasteners 30. In particular, the fastening components are arranged in multiple groups and are respectively arranged on each side wall of the main body part, so that the net cover 10 and the base 20 are completely fixed.

Specifically, the catching groove 22 is adapted to the shape of the catching protrusion 14 to catch the catching protrusion 14 in the catching groove 22 to prevent the catching protrusion 14 from moving. Be provided with joint post 23 along its length direction in the joint groove 22, the bottom of buckle 30 is provided with the post groove 31 that is used for holding joint post 23. Be provided with the opening along its axis direction on the periphery wall of post groove 31 to guarantee that post groove 31 is incompletely sealed, thereby be convenient for joint post 23 and the separation of post groove 31, realize buckle 30 and base 20's the dismantlement be connected. The upper portion of the buckle 30 is provided with a buckling member 32, and the buckling member 32 is connected to the buckling groove 16 provided at the top end of the mesh cover 10. The buckling pieces 32 and the buckling grooves 16 are provided with slope structures, so that the buckling pieces 32 and the buckling grooves 16 are stably connected and are convenient to disassemble. With such arrangement, when the mesh cover 10 needs to be connected with the base 20, the column groove 31 of the buckle 30 is clamped on the clamping column 23, and the buckling piece 32 of the buckle 30 is pressed into the buckling groove 16; when it is desired to detach the mesh cover 10 from the base 20, the snap members 32 are pushed outward and the snap posts 23 are separated from the post slots 31.

The following explains a specific operation of the present invention:

when the user needs to replace the foldable filter cartridge 40, the snap-fit members 32 are pushed outward, and the snap-fit posts 23 are separated from the post grooves 31, thereby releasing the connection between the mesh cover 10 and the base 20. Subsequently, the mesh cover 10 is detached from the base 20, the folded filter cartridge 40 is taken out and replaced, and the folded part of the new folded filter cartridge 40 pre-fixed by the rubber strip 41 is directly and correspondingly placed at the tooth groove of the second long rack 21. When the folded filter element 40 is aligned with the two sets of second long racks 21 completely, the mesh cover 10 is aligned and fastened to the base 20. Finally, the post groove 31 of the buckle 30 is clamped on the clamping post 23, and the fastener 32 of the buckle 30 is pressed into the buckle groove 16, so that the net cover 10 and the base 20 are fixed.

Example 2

As shown in fig. 8 to 11, in the present embodiment, in the filtering apparatus 200, the sliding grooves 222 are symmetrically disposed at the left and right ends of the inner peripheral wall of the base 220, the plurality of racks are two sets of fourth long racks 230 disposed in parallel along the length direction of the base 220, the two sliding grooves 222 disposed in left and right symmetry respectively accommodate the left and right ends of the fourth long racks 230, and the fourth long racks 230 are slidably connected to the sliding grooves 222. The sliding groove 222 is arranged along the vertical direction, and the fourth long rack 230 is connected with the sliding groove 222 in a sliding manner, so that the fourth long rack 230 can slide up and down relative to the base 220, and the fourth long rack 230 and the base 220 can be quickly disassembled and assembled. It should be noted that the length of the fourth long rack 230 is the same as the width of the square groove, so as to ensure that two ends of the fourth long rack 230 are abutted against the inner peripheral wall of the base 220. So set up, through set the long rack 230 of fourth to the structure of can dismantling the connection with the main part, can take off folding filter core, convenient and fast more through the direct quick with folding filter core of the long rack 230 of split fourth.

It should be noted that, according to the understanding of the technical solutions of the present application, the sliding slots 222 may also be symmetrically disposed at the left and right ends of the inner peripheral wall of the net cover 210, so as to clamp the fourth long rack 230 on the net cover 210 and detachably connect with the net cover 210.

As shown in fig. 8 to 11, in the present embodiment, a first square protrusion 211 is circumferentially disposed on an inner wall of the mesh cover 210, and a second square protrusion 221 is circumferentially disposed on an inner wall of the base 220. The first square protrusion 211 is matched with the second square protrusion 221 in shape. A first pressing groove for accommodating the first square protrusion 211 is formed between the second square protrusion 221 and the inner circumferential wall of the base 220.

So set up, through set up multiunit protruding structure on the inner wall at lid 210 and base 220, can be when lid 210 and base 220 are connected, protruding structure staggered connection each other, and then compress tightly border department with folding filter core.

As shown in fig. 8 to 11, in the present embodiment, the engaging component 240 includes a hook 241 disposed at the bottom end of the net cover 210, an engaging portion 243 disposed on the peripheral wall of the base 220, and a switch board 242 slidably connected to the engaging portion 243. In particular, the fastening components 240 are arranged in multiple groups and are respectively disposed on each sidewall of the base 220, so as to ensure that the mesh cover 210 and the base 220 are completely fixed. The switch board 242 has an open state and a closed state, and a user can control the connection state of the mesh cover 210 and the base 220 by sliding the switch board 242. The hook 241 is disposed in an L-shaped structure, and the bottom end of the hook 241 is connected to the switch board 242 in a closed state. When the switch board 242 is in the open state, the horizontal portion of the bottom end of the hook 241 is clamped to the lower end of the switch board 242, so as to limit the upward movement of the hook 241, and the net cover 210 and the base 220 are in the connection state with each other. When the switch board 242 is in the open state, the horizontal portion of the bottom end of the hook 241 is no longer restricted by the switch board 242 and can move upward relative to the base 220, and at this time, the net cover 210 can be detached from the base 220.

Specifically, the engaging portion 243 includes a sliding portion provided on the inner peripheral wall of the base 220 and an opening portion provided on the outer peripheral wall of the base 220. The switch plate 242 is accommodated in the slide portion and slidably coupled to the slide portion. The inside of the sliding part is hollow, and openings are provided at both ends thereof to ensure that the switch board 242 can slide back and forth in the sliding part.

One end of the switch board 242 is clamped with the clamping hook 241, and the outer end face of the other end is provided with a limiting bulge. The limiting bulge is accommodated in the opening part and slides back and forth in the opening part. The opening part is communicated with the outside of the base 220, and the sliding part is communicated with the opening part, so that the limiting protrusion of the switch board 242 is exposed out of the base 220, and a user can conveniently control the switch board 242 to slide back and forth. The outer end face of the limiting protrusion is provided with an anti-slip groove 222, which is convenient for a user to control the switch board 242 to slide.

Thus, when the switch board 242 is in the closed state, the limiting protrusion is located at one end of the opening portion close to the hook 241, and one end of the switch board 242, which is far away from the limiting protrusion, is located outside the sliding portion and is clamped with the hook 241. At this time, the mesh cover 210 is connected to the base 220. When the switch plate 242 is in the open state, the limit protrusion slides to the end of the opening portion away from the hook 241, and the end of the switch plate 242 away from the limit protrusion slides to the inside of the sliding portion and is separated from the hook 241. At this time, the mesh cover 210 and the base 220 are in a detachable state.

Except for the above structure, the other structures of this embodiment are substantially the same as those of embodiment 1, and are not described herein again.

Example 3

As shown in fig. 12 to 15, in the present embodiment, in the filter device 300, the lower end of the inner circumferential wall of the net cover 310 is provided with the upper rotating protrusion 350, the upper end of the inner circumferential wall is provided with the upper rotating groove, the upper rotating groove is provided with the upper rotating post 360, and the bottom end of the upper rotating protrusion 350 is provided with the upper circular groove.

One end of the inner peripheral wall of the base 320, which is close to the upper rotating groove, is provided with a lower rotating bulge 330, and the outer side wall of the lower rotating bulge 330 is provided with a connecting cavity 331; the coupling cavity 331 is adapted to receive a coupling protrusion 371 provided at a lower portion of the rotation member 370, and a lower circular groove 372 rotatably coupled to the upper rotation post 360 is provided at an upper portion of the rotation member 370. So that one end of the base 320 and one end of the net cover 310 are rotatably connected through the rotating member 370, and the other end is movably connected.

One end of the inner peripheral wall of the base 320, which is close to the upper rotating protrusion 350, is provided with a lower rotating groove, and a lower rotating column 340 connected with the upper circular groove in a rotating manner is arranged in the lower rotating groove, so that the opening and closing of the mesh cover 310 relative to the base 320 are realized. So configured, the upper rotating protrusion 350 is fastened to the lower rotating post 340, so that the mesh cover 310 is closed with the base 320. The upper rotation protrusion 350 is separated from the lower rotation post 340 so that the mesh cover 310 and the base 320 are opened.

As shown in fig. 12 to 15, in the present embodiment, a third square protrusion 321 and a fourth square protrusion 322 are circumferentially disposed on an inner wall of the base 320. The fourth square protrusion 322 is matched with the third square protrusion 321 in shape and is located outside the third square protrusion 321, so as to form a second press fit groove between the fourth square protrusion 322 and the third square protrusion 321. The inner wall of the net cover 310 is provided with a fifth square protrusion 311 which is accommodated in the second pressing groove along the circumferential direction.

So set up, through set up multiunit protruding structure on the inner wall at lid 310 and base 320, can be when lid 310 is connected with base 320, protruding structure staggered connection each other, and then compress tightly border department with folding filter core.

Except for the above structure, the other structures of this embodiment are substantially the same as those of embodiment 1, and are not described herein again.

The above description is only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings of the utility model, or the direct or indirect application in other related technical fields, are included in the patent protection scope of the utility model.

Claims (14)

1. A filter device comprises a main body part and a filter element component; it is characterized in that the main body part is provided with an installation cavity for accommodating the filter element assembly, the main body part comprises a base and a net cover which is covered on the base, at least one rack for fixing the filter element assembly is arranged on the inner wall of the net cover and/or the base,

the filter element assembly comprises a folding filter element arranged in a folding shape and an adhesive tape arranged on the folding filter element and used for maintaining the shape of the folding filter element unchanged;

the upper end and the lower end of the main body part are both provided with vent holes matched with the shape of the main body part.

2. The filtration device of claim 1, wherein the mesh cover is removably or rotatably coupled to the base;

the screen cover comprises a first filtering part and a first outer frame arranged on the periphery of the first filtering part, and the base comprises a bottom plate, a second outer frame arranged on the periphery of the bottom plate and a square groove formed by the bottom plate and the second outer frame in a surrounding mode;

the vent hole is arranged in a square structure and is respectively arranged on the first filtering part and the bottom plate.

3. The filter device according to claim 2, wherein the folding filter element comprises a plurality of V-shaped portions connected in sequence, one side of the rack close to the folding filter element is provided with clamping teeth, and a tooth groove for accommodating the V-shaped portions is formed between every two adjacent clamping teeth.

4. The filtering device as claimed in claim 3, wherein the inner wall of the mesh cover is provided with at least one first long rack, the base is adapted to the shape of the mesh cover, and the inner wall of the base is provided with at least one second long rack corresponding to the first long rack;

the first long rack comprises a plurality of first clamping teeth, the second long rack comprises a plurality of second clamping teeth, two adjacent second clamping teeth form a second tooth groove used for accommodating the first clamping teeth, and the second tooth groove is the same as the first clamping teeth in shape.

5. The filtering device according to claim 4, wherein the first long racks are arranged in two groups, the two groups of first long racks are arranged along the length direction of the net cover and symmetrically arranged at the upper end and the lower end of the inner wall of the net cover, the left end and the right end of the inner wall of the net cover are both provided with first protruding structures, the first protruding structures are arranged along the width direction of the net cover, and the first long racks are positioned between the two groups of first protruding structures;

the second long racks are arranged into two groups, the two groups of second long racks are symmetrically arranged at the upper end and the lower end of the inner wall of the second outer frame, and the positions of the second long racks correspond to the positions of the first long racks; the upper end and the lower end of the base are symmetrically provided with second protruding structures along the length direction of the base, the second protruding structures are located on the outer sides of the second long racks so as to form first containing grooves between the second long racks, and the first containing grooves are used for containing edge portions of the upper end and the lower end of the folding filter element respectively.

6. The filtering device as claimed in claim 5, wherein the left and right ends of the base are symmetrically provided with third protruding structures along the width direction thereof, the second long rack is located between two sets of the third protruding structures, and a fourth protruding structure is arranged side by side at one end of the two sets of the third protruding structures far away from the second long rack, and a second receiving groove for receiving the first protruding structure is formed between the third protruding structure and the fourth protruding structure.

7. The filtering device according to claim 3, wherein the left and right ends of the inner peripheral wall of the base are symmetrically provided with a plurality of sliding grooves, the base is provided with two groups of fourth long racks which are arranged side by side along the length direction of the base, the two sliding grooves which are symmetrically arranged left and right correspondingly accommodate the left and right ends of the fourth long racks respectively, and the fourth long racks are connected with the sliding grooves in a sliding manner.

8. The filtering device as claimed in claim 7, wherein a first square protrusion is circumferentially arranged on the inner wall of the net cover, and a second square protrusion is circumferentially arranged on the inner wall of the base; and a first pressing groove for accommodating the first square protrusion is formed between the second square protrusion and the inner peripheral wall of the base.

9. The filter device according to claim 2, wherein the mesh cover is detachably connected to the base by a snap-fit assembly; the block subassembly including set up in along circumference in a plurality of joints of the internal perisporium of screen cover protruding, set up in along circumference in a plurality of joint grooves of the internal perisporium of base and respectively correspond with the buckle of connection can be dismantled in a plurality of joint grooves, a plurality of joint archs correspond the card respectively and arrange in a plurality of joint inslot.

10. The filtering device as claimed in claim 9, wherein the shape of the clamping groove is adapted to that of the clamping protrusion, and a clamping column is arranged in the clamping groove along the length direction;

the bottom end of the buckle is provided with a column groove used for containing the clamping column, the upper portion of the buckle is provided with a buckling piece, and the buckling piece is connected with a buckling groove formed in the top end of the net cover.

11. The filtration device of claim 2, wherein the mesh cover is removably connected to the base by a slide assembly; the sliding buckle component comprises a clamping hook arranged at the bottom end of the net cover, a clamping part arranged on the peripheral wall of the base and a switch board in sliding connection with the clamping part;

the switch board has an open state and a closed state; the pothook is the setting of L type structure, the bottom of pothook with be in the off-state the switch board joint.

12. The filter device according to claim 11, wherein the engaging portion includes a sliding portion provided on an inner peripheral wall of the base, and an opening portion provided on an outer peripheral wall of the base, the sliding portion communicating with the opening portion;

the switch plate is accommodated in the sliding part and is connected with the sliding part in a sliding way, and a limiting bulge is arranged on the outer end face of one end of the switch plate; the limiting bulge is accommodated in the opening part and slides back and forth in the opening part; the switch board is far away from the end of the limiting bulge and is clamped with the clamping hook.

13. The filtering device as claimed in claim 2, wherein the lower end of the inner peripheral wall of the net cover is provided with an upper rotating protrusion, the upper end of the inner peripheral wall is provided with an upper rotating groove, the upper rotating groove is provided with an upper rotating column, and the bottom end of the upper rotating protrusion is provided with an upper circular groove;

a lower rotating groove is formed in one end, close to the upper rotating protrusion, of the inner peripheral wall of the base, a lower rotating column connected with the upper circular groove in a rotating mode is arranged in the lower rotating groove, a lower rotating protrusion is arranged at one end, close to the upper rotating groove, of the inner peripheral wall of the base, and a connecting cavity is formed in the outer side wall of the lower rotating protrusion; the connecting cavity is used for accommodating a connecting bulge arranged at the lower part of the rotating part, and the upper part of the rotating part is provided with a lower circular groove which is rotatably connected with the upper rotating column.

14. The filtering device as claimed in claim 13, wherein the inner wall of the base is provided with a third square protrusion and a fourth square protrusion along the circumferential direction; a second pressing groove is formed between the fourth square protrusion and the third square protrusion, and a fifth square protrusion accommodated in the second pressing groove is arranged on the inner wall of the net cover along the circumferential direction.

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