Filtering device and drying equipment comprising same

Abstract

The utility model relates to the technical field of clothes processing equipment, and particularly provides a filtering device and drying equipment comprising the filtering device. The filtering device comprises a first filter screen frame, a second filter screen frame, a first filter screen, a second filter screen and a connecting structure, the first end of the first filter screen frame is connected with the first end of the second filter screen frame through the connecting structure, and the connecting structure can block a gap between the first end of the first filter screen frame and the first end of the second filter screen frame. Compared with a filtering device with a single-layer filtering net in the prior art, the filtering device is provided with two layers of filtering nets, the filtering effect is better, in addition, the first end of the first filtering net frame and the first end of the second filtering net frame of the filtering device are further connected through the connecting structure, and the filtering effect is better. The connecting structure can block the gap between the first end of the first filter screen frame and the first end of the second filter screen frame, thread scraps are prevented from passing through the gap, and the filtering effect of the filtering device is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clothing processing equipment, and specifically provides a filtering device and a drying device comprising the filtering device. Background Art

[0002] Drying equipment refers to a machine that can use hot air to dry clothes. Drying equipment mainly includes washing and drying machines, clothes dryers or drying machines.

[0003] Taking the washer-dryer as an example, the heating methods of the existing washer-dryers on the market are mostly electric heating or heat pump heating. No matter which heating method is chosen, the circulating air duct during the drying process is indispensable. During the drying process, the lint on the clothes will fall off, be carried by the fan and attached to the entire air duct. In order to avoid the above situation, many washer-dryers choose to set up a filter device in the drying air duct to filter the lint. However, the filtering effect of the existing filter device is not very good.

[0004] Therefore, this field needs a new technical solution to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the above technical problem, that is, to solve the problem that the existing filtering device has poor filtering effect.

[0006] In a first aspect, the utility model provides a filtering device, comprising a first filter frame, a second filter frame, a first filter mounted on the first filter frame, a second filter mounted on the second filter frame, and a connecting structure, wherein the first filter frame and the second filter frame are arranged side by side, and the first end of the first filter frame along the first direction is connected to the first end of the second filter frame along the first direction through the connecting structure, the connecting structure is arranged along the second direction and can seal the gap between the first end of the first filter frame and the first end of the second filter frame, one of the first direction and the second direction is the length direction of the first filter frame, and the other of the first direction and the second direction is the width direction of the first filter frame.

[0007] In a preferred technical solution of the above-mentioned filter device, the connecting structure is foldable so as to allow the second end of the first filter support along the first direction to be separated from the second end of the second filter support along the first direction.

[0008] In the preferred technical solution of the above-mentioned filtering device, the connecting structure is a connecting plate, and the two side edges of the connecting plate distributed along its width direction are respectively fixedly connected or integrally arranged with the first filter frame and the second filter frame, and the two side edges can be folded along the width direction of the connecting plate.

[0009] In the preferred technical solution of the above-mentioned filtering device, the first filter frame is provided with a accommodating cavity capable of accommodating the second filter frame, the inner wall of the accommodating cavity is provided with a first snap-fitting structure, the second end of the second filter frame is provided with a second snap-fitting structure, and the first snap-fitting structure is snap-fitted with the second snap-fitting structure.

[0010] In a preferred technical solution of the above-mentioned filtering device, one of the first clamping structure and the second clamping structure is a clamping groove, and the other of the first clamping structure and the second clamping structure is a clamping rib, and the clamping groove is adapted to the clamping rib.

[0011] In a preferred technical solution of the above-mentioned filter device, the filter device further comprises a pull-out bracket, and one end of the pull-out bracket along the length direction is detachably fixedly connected to one end of the first filter frame along the length direction.

[0012] In the preferred technical solution of the above-mentioned filter device, the filter device also includes a locking pin installed on the pull-out bracket, the locking pin is provided with a first locking structure, and the first filter frame is provided with a second locking structure. When the locking pin is in the locking position, the first locking structure cooperates with the second locking structure to lock the first filter frame to the pull-out bracket. When the locking pin is in the unlocking position, the first locking structure is separated from the second locking structure so that the first filter frame can be removed from the pull-out bracket.

[0013] In a preferred technical solution of the above-mentioned filtering device, the filtering device further comprises a housing, and the pull-out bracket is mounted on the housing and can move relative to the housing along a length direction of the housing.

[0014] In a preferred technical solution of the above-mentioned filtering device, the mesh number of the first filter is greater than or less than the mesh number of the second filter.

[0015] In a second aspect, the utility model also provides a drying device, comprising the above-mentioned filtering device.

[0016] When adopting the above-mentioned technical scheme, the filtering device of the utility model has a first filter screen and a second filter screen. Compared with the filtering device with a single-layer filter screen in the prior art, the filtering device of the utility model has a better filtering effect. In addition, the first end of the first filter screen frame and the first end of the second filter screen frame of the filtering device are also connected by a connecting structure. The connecting structure can seal the gap between the first end of the first filter screen frame and the first end of the second filter screen frame to prevent wire scraps from passing through the gap, which is conducive to further improving the filtering effect of the filtering device.

[0017] Furthermore, the utility model configures the connecting structure as a foldable structure so that the first filter rack and the second filter rack can rotate relative to each other. In this way, when the user needs to clean the filter, he only needs to rotate the second filter rack so that the second filter rack and the first filter rack are opened at a certain angle, and the filters on the two filter racks can be cleaned very conveniently, thereby improving the user experience.

[0018] Furthermore, the utility model can prevent the second filter frame from automatically escaping from the accommodating cavity of the first filter frame by respectively arranging a first clamping structure and a second clamping structure on the first filter frame and the second filter frame for clamping cooperation.

[0019] Furthermore, the utility model connects the pull-out bracket and the first filter frame through a locking pin, which is conducive to the rapid disassembly and installation of the pull-out bracket and the first filter frame, thereby further improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The preferred embodiment of the present invention is described below in conjunction with the accompanying drawings of a washer-dryer, in which:

[0021] Figure 1 It is a structural schematic diagram of the integrated washer-dryer of the utility model;

[0022] Figure 2 It is a schematic diagram of the assembly of the drying system and the drying drum of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the filter assembly of the filter device of the utility model. Figure 1 ;

[0024] Figure 4 This is a schematic diagram of the structure of the filter assembly of the filter device of the utility model. Figure 2 ;

[0025] Figure 5 It is a structural schematic diagram of a filter frame and a locking pin of the filter device of the utility model;

[0026] Figure 6 It is a structural schematic diagram of a locking pin of the filter device of the utility model;

[0027] Figure 7 This is a schematic diagram of the structure of the first filter frame and the second filter frame of the filter device of the utility model Figure 1 ;

[0028] Figure 8 yes Figure 7 The enlarged schematic diagram of point A in the middle;

[0029] Fig. 9 This is a schematic diagram of the structure of the first filter frame and the second filter frame of the filter device of the utility model Figure 2 .

[0030] List of reference numerals:

[0031] 1. Box body; 11. Second plug interface;

[0032] 2. Drying drum; 21. Exhaust vent; 22. Take-in and put-out port;

[0033] 31. Pull-out bracket; 32. Filter rack; 33. Housing; 34. Lock pin; 351. First filter; 352. Second filter; 36. Connecting structure; 321. First filter rack; 322. Second filter rack; 323. Second locking structure; 341. First locking structure; 3211. Accommodating chamber; 3212. First clamping structure; 3221. Second clamping structure;

[0034] 41. first drying air duct; 42. second drying air duct; 411. first plug interface;

[0035] 5. Fan. DETAILED DESCRIPTION

[0036] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. For example, although the embodiments described below are described in conjunction with a washer-dryer, the technical solution of the present invention is also applicable to other drying devices with drying functions, such as dryers and care machines.

[0037] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "top", "bottom", "front", "back" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0038] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "connect", and "install" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Specifically, Figure 1 and Figure 2As shown, the washer-dryer of the present application includes a housing 1, a drying drum 2 installed in the housing 1, and a drying system, wherein the drying system can blow hot air into the drying drum 2, wherein the drying drum 2 is the outer drum of the washer-dryer, and a rotatable inner drum is arranged inside the outer drum, and the inner drum is used to accommodate clothes.

[0040] For example, Figure 2 As shown, the drying drum 2 is horizontally arranged, and the front end of the drying drum 2 is a loading and unloading port 22 for loading and unloading clothes. An exhaust port 21 is provided near the rear end of the drying drum 2, and the exhaust port 21 is connected with the air inlet end of the drying system. The air outlet end of the drying system extends to the loading and unloading port 22 of the drying drum 2. During the execution of the drying program, the humid air in the drying drum 2 enters the drying system from the exhaust port 21, and after condensation and heating by the drying system, re-enters the drying drum 2 from the loading and unloading port 22 to dry the clothes in the drying drum 2.

[0041] Preferably, if Figure 1 and Figure 2 As shown, the drying system of the present invention comprises a drying air duct and a filter device. A first plug interface 411 is provided on the drying air duct, and a part of the filter device extends into the drying air duct through the first plug interface 411.

[0042] Among them, the filter device is used to filter the airflow in the drying air duct and intercept impurities such as lint carried by the airflow. By connecting the filter device to the drying air duct by plugging, when the filter device needs to be cleaned, the filter device can be pulled out of the drying air duct, and then inserted into the drying air duct from the first plug interface 411 after cleaning. The operation is very convenient.

[0043] Preferably, if Figure 1 As shown, the housing 1 of the washer-dryer of the present invention is provided with a second plug interface 11 at a position corresponding to the first plug interface 411 , the extension direction of the filter device is parallel to the axial direction of the drying drum 2 of the washer-dryer, and the filter device extends to the second plug interface 11 .

[0044] Exemplarily, the second plug interface 11 is disposed on the front panel of the housing 1 , and when the filter device needs to be cleaned, the user can directly pull the filter device out from the front panel.

[0045] Preferably, if Figure 1 and Figure 2As shown, the drying air duct of the utility model includes a first drying air duct 41 and a second drying air duct 42. The two ends of the first drying air duct 41 are respectively connected to the exhaust port 21 on the drying drum 2 and the air inlet of the fan 5 of the drying system. The air outlet of the fan 5 is connected to one end of the second drying air duct 42. The other end of the second drying air duct 42 extends toward the loading and unloading port 22 of the drying drum 2. The first plug interface 411 is provided on the first drying air duct 41.

[0046] For example, Figure 1 and Figure 2 As shown, the first drying air duct 41 and the second drying air duct 42 are both located above the drying drum 2 and are arranged horizontally, the extension direction of the first drying air duct 41 is perpendicular to the axial direction of the drying drum 2, and the extension direction of the second drying air duct 42 is parallel to the axial direction of the drying drum 2, that is, the first drying air duct 41 and the second drying air duct 42 are arranged vertically, and the angle between the two is 90°. In this way, the drying air duct occupies less space and the layout is more optimized.

[0047] Preferably, if Figure 1 and Figure 3 As shown, the filter device of the present application includes a housing 33 and a filter assembly mounted on the housing 33 , and the filter assembly can move relative to the housing 33 along the length direction of the housing 33 .

[0048] The outer shell 33 is fixedly installed between the drying air duct and the housing 1, specifically, the outer shell 33 is fixedly installed between the first drying air duct 41 and the housing 1, and the two ends of the outer shell 33 are respectively connected with the first plug port 411 on the first drying air duct 41 and the second plug port 11 on the housing 1, and a part of the filter assembly extends into the drying air duct through the first plug port 411, specifically into the first drying air duct 41, and the filter assembly extends to the second plug port 11. When the filter device needs to be cleaned, it is only necessary to pull out the filter assembly without disassembling the outer shell 33 of the filter device. In addition, the extension direction of the outer shell 33 and the filter assembly is preferably parallel to the axial direction of the drying drum 2 of the drying device.

[0049] It should be noted that the housing 33 is not mandatory, and those skilled in the art may also cancel the housing 33 according to actual conditions in actual applications.

[0050] Preferably, if Figures 3 to 9 As shown, the filter assembly of the present invention includes a pull-out bracket 31 , a filter frame 32 installed on the pull-out bracket 31 , and a filter installed on the filter frame 32 .

[0051] Among them, the pull-out bracket 31 is installed on the shell 33 and can move relative to the shell 33 along the length direction of the shell 33. The pull-out bracket 31 and the filter frame 32 are distributed along the length direction of the shell 33. The extension directions of the pull-out bracket 31 and the filter frame 32 are parallel to the axial direction of the drying drum 2 of the washer-dryer. The pull-out bracket 31 extends to the second plug interface 11, and the filter frame 32 and the filter pass through the first plug interface 411 and extend into the drying air duct. Specifically, the filter frame 32 and the filter pass through the first plug interface 411 and extend into the first drying air duct 41.

[0052] It should be noted that, in actual application, those skilled in the art can make the entire filter rack 32 extend into the first drying air duct 41, or only the filter rack 32 with the filter installed can be extended into the first drying air duct 41, etc. Such flexible adjustments and changes do not deviate from the principle and scope of the present invention and should be limited within the protection scope of the present invention. Of course, the present invention preferably only allows a portion of the filter rack 32 to extend into the first drying air duct 41.

[0053] In addition, it should be noted that, in actual application, those skilled in the art can extend the entire filter screen into the first drying air duct 41, or only extend a portion of the filter screen into the first drying air duct 41, etc. Such flexible adjustments and changes do not deviate from the principle and scope of the present invention and should be limited within the protection scope of the present invention. Of course, the present invention preferably extends the entire filter screen into the first drying air duct 41.

[0054] In addition, it should be noted that the provision of the pull-out bracket 31 is not essential, and those skilled in the art may cancel the provision of the pull-out bracket 31 according to specific circumstances in actual applications.

[0055] Preferably, if Figure 3 and Figure 4 As shown, the filter frame 32 of the present invention is detachably fixedly connected to the drawer bracket 31 .

[0056] When the filter needs to be cleaned, first pull out the pull-out bracket 31 from the box body 1. When the outer end of the filter frame 32 moves to the outside of the box body 1 with the pull-out bracket 31, disassemble the pull-out bracket 31 and the filter frame 32, and then continue to pull the filter frame 32 until the filter is pulled out. In this way, when disassembling the filter device, the required lateral space is smaller, disassembly is more convenient, and it is easy to arrange the washer-dryer.

[0057] For example, Figure 3 and Figure 4 As shown, the right end of the pull-out bracket 31 along its length direction is detachably fixedly connected to the left end of the filter frame 32 along its length direction.

[0058] Preferably, if Figures 3 to 9 As shown, the filter frame 32 of the utility model includes a first filter frame 321 and a second filter frame 322 arranged side by side, and the filter includes a first filter 351 installed on the first filter frame 321 and a second filter 352 installed on the second filter frame 322. The first filter frame 321 is detachably connected to the pull-out bracket 31 at one end along its length direction.

[0059] By arranging the first filter 351 and the second filter 352 side by side on the filter frame 32, the filtering effect of the filtering device can be improved.

[0060] Preferably, the mesh number of the first filter screen 351 is larger or smaller than the mesh number of the second filter screen 352 .

[0061] That is, the mesh number of the first filter 351 is different from the mesh number of the second filter 352 , wherein the mesh number of the filter located upstream is smaller than the mesh number of the filter located downstream.

[0062] Exemplarily, the first filter 351 is located upstream of the second filter 352, and the air flow in the drying duct first flows through the first filter 351 and then flows through the second filter 352. The mesh number of the first filter 351 is smaller than the mesh number of the second filter 352, wherein the mesh number of the first filter 351 can be set between 40 and 80, and the mesh number of the second filter 352 can be set between 80 and 160.

[0063] Preferably, if Figures 7 to 9 As shown, the filtering device of the present invention also includes a connecting structure 36, and the first end of the first filter frame 321 along the first direction is connected to the first end of the second filter frame 322 along the first direction through the connecting structure 36. The connecting structure 36 is arranged along the second direction and can seal the gap between the first end of the first filter frame 321 and the first end of the second filter frame 322.

[0064] For example, the first direction is the length direction of the first filter frame 321, and the second direction is the width direction of the first filter frame 321. Figure 7 From the top, the right end of the first filter frame 321 is connected to the left end of the second filter frame 322 via a connecting structure 36 , and the connecting structure 36 is arranged along the width direction of the first filter frame 321 .

[0065] By providing the connection structure 36 to seal the gap between the first end of the first filter frame 321 and the first end of the second filter frame 322, it is possible to prevent wire scraps from passing through the gap, thereby facilitating improving the filtering effect of the filtering device.

[0066] It should be noted that, in actual applications, those skilled in the art may also set the first direction as the width direction of the first filter frame 321, and the second direction as the length direction of the first filter frame 321. In this case, Figure 7 From the top, the top or bottom end of the first filter frame 321 can be connected to the top or bottom end of the second filter frame 322 via a connecting structure 36 , and the connecting structure 36 is arranged along the length direction of the first filter frame 321 .

[0067] Preferably, if Figures 7 to 9 As shown, the connection structure 36 can be folded to allow the second end of the first filter holder 321 along the first direction to be separated from the second end of the second filter holder 322 along the first direction.

[0068] By setting the connection structure 36 to a foldable structure, similar to a hinge structure, the first filter frame 321 and the second filter frame 322 can rotate relative to each other. In this way, when the user needs to clean the filter, he only needs to rotate the second filter frame 322. Figure 7 and Fig. 9 As shown in FIG. 1 , by opening the second filter rack 322 and the first filter rack 321 at a certain angle, the filters on the two filter racks can be cleaned very conveniently, further improving the user experience. Figures 3 to 5 As shown, just turn the second filter frame 322 back.

[0069] It should be noted that the present invention does not limit the specific structural form of the connecting structure 36. For example, it can be set as a connecting plate, a connecting cloth or a connecting belt, etc. Such adjustments and changes to the specific structural form of the connecting structure 36 do not deviate from the principle and scope of the present invention and should be limited within the protection scope of the present invention.

[0070] Preferably, if Figure 7 and Figure 8 As shown, the connection structure 36 is a connection plate, and the two side edges of the connection plate distributed along the width direction are respectively fixedly connected to the first filter frame 321 and the second filter frame 322 or are integrally arranged, and the two side edges can be folded along the width direction of the connection plate.

[0071] Wherein, the connecting plate can be made of plastic, and the thickness is as small as possible, so as to be easy to fold. Of course, other materials such as rubber can also be used to make it.

[0072] Preferably, if Figure 5 , Figure 7 and Figure 8 As shown, the first filter frame 321 is provided with a accommodating cavity 3211 capable of accommodating the second filter frame 322, the inner wall of the accommodating cavity 3211 is provided with a first clamping structure 3212, the second end of the second filter frame 322 is provided with a second clamping structure 3221, and the first clamping structure 3212 is clamped and matched with the second clamping structure 3221.

[0073] By providing the first clamping structure 3212 and the second clamping structure 3221 to engage with each other, it is possible to prevent the second filter frame 322 from automatically escaping from the accommodating cavity 3211 of the first filter frame 321 .

[0074] Preferably, if Fig. 9 As shown, the first clamping structure 3212 is a clamping slot, and the second clamping structure 3221 is a clamping rib, and the clamping slot and the clamping rib are matched.

[0075] After the second filter frame 322 is placed in the accommodating cavity 3211 of the first filter frame 321 , the clamping rib is located in the clamping groove to prevent the second filter frame 322 from escaping from the accommodating cavity 3211 .

[0076] It should be noted that, in practical applications, those skilled in the art may also configure the first clamping structure 3212 as a clamping rib, and correspondingly configure the second clamping structure 3221 as a clamping groove.

[0077] Preferably, if Figures 3 to 6 As shown, the filtering device of the present invention also includes a locking pin 34, which is installed on the pull-out bracket 31. The locking pin 34 is provided with a first locking structure 341, and the first filter frame 321 is provided with a second locking structure 323. When the locking pin 34 is in a locked position, the first locking structure 341 cooperates with the second locking structure 323 to lock the first filter frame 321 to the pull-out bracket 31. When the locking pin 34 is in an unlocked position, the first locking structure 341 is separated from the second locking structure 323, so that the first filter frame 321 can be removed from the pull-out bracket 31.

[0078] The utility model locks the pull-out bracket 31 and the first filter frame 321 through the locking pin 34. When the pull-out bracket 31 needs to be disassembled from the filter frame, the locking pin 34 can be unlocked.

[0079] It should be noted that the utility model does not limit the specific structural form of the first locking structure 341 and the second locking structure 323. For example, the first locking structure 341 and the second locking structure 323 can be set as a structure in which two locking hooks cooperate with each other, or as a structure in which a locking hook and a locking mouth cooperate with each other, or as a structure in which a locking column and a locking hole cooperate with each other, and so on.

[0080] Preferably, if Figures 4 to 6 As shown, the first locking structure 341 is a locking hook, and the second locking structure 323 is a locking opening matched with the locking hook, and a part of the locking hook can be inserted into the locking opening.

[0081] For example, Figures 4 to 6As shown, the lock pin 34 is vertically mounted on the pull-out bracket 31, and the lock hook on the lock pin 34 is arranged upward. There are two lock hooks and they are spaced apart along the axis direction of the lock pin 34. Two lock ports are correspondingly arranged on the first filter frame 321, and the lock hooks are located below the lock ports. When the lock hooks are inserted into the lock ports, the pull-out bracket 31 and the first filter frame 321 can be locked. When the pull-out bracket 31 and the filter frame 32 need to be disassembled, the lock pin 34 is pressed downward to separate the lock hook from the lock port. It should be noted that only one lock hook can be arranged to cooperate with the lock port.

[0082] Preferably, the filtering device of the present invention also includes an elastic reset member (not shown in the figure) installed on the pull-out bracket 31, and the two ends of the elastic reset member are respectively connected to the pull-out bracket 31 and the locking pin 34. The locking pin 34 can move from the unlocking position to the locking position under the action of the elastic reset member.

[0083] Exemplarily, the elastic reset member is arranged in the vertical direction and is located between the locking pin 34 and the inner bottom wall of the pull-out bracket 31. When the locking pin 34 is pressed downward, the elastic reset member is compressed. When the locking pin 34 is released, the elastic reset member can push up the locking pin 34, so that the locking pin 34 moves from the unlocking position to the locking position.

[0084] Preferably, the locking pin 34 is further provided with a receiving groove (not shown in the figure), and a part of the elastic reset member is located in the receiving groove.

[0085] Exemplarily, the locking pin 34 is vertically arranged, the receiving groove extends along the axis of the locking pin 34 , the receiving groove extends to the bottom end of the locking pin 34 , and the elastic reset member is inserted into the receiving groove from the bottom end of the locking pin 34 .

[0086] It should be noted that the present invention does not limit the specific structural form of the elastic reset member, for example, the elastic reset member can be set as a spring or a rubber column, etc. Of course, the present invention preferably sets the elastic reset member as a spring.

[0087] Those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present application and form different embodiments. For example, in the claims of the present application, any one of the claimed embodiments may be used in any combination.

[0088] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A filtering device, characterized in that: The filtering device includes a first filter frame, a second filter frame, a first filter mounted on the first filter frame, a second filter mounted on the second filter frame, and a connecting structure. The first filter frame and the second filter frame are arranged side by side. The first end of the first filter frame along the first direction is connected to the first end of the second filter frame along the first direction through the connecting structure. The connecting structure is arranged along the second direction and can block the gap between the first end of the first filter frame and the first end of the second filter frame. One of the first direction and the second direction is the length direction of the first filter frame, and the other of the first direction and the second direction is the width direction of the first filter frame.

2. The filtering device according to claim 1, characterized in that: The connection structure is foldable to allow the second end of the first filter support along the first direction to be separated from the second end of the second filter support along the first direction.

3. The filtering device according to claim 2, characterized in that: The connection structure is a connection plate, and two side edges of the connection plate distributed along the width direction thereof are respectively fixedly connected to the first filter frame and the second filter frame or are integrally arranged, and the two side edges can be folded along the width direction of the connection plate.

4. The filtering device according to claim 2, characterized in that: The first filter frame is provided with a receiving cavity capable of receiving the second filter frame, the inner wall of the receiving cavity is provided with a first clamping structure, the second end of the second filter frame is provided with a second clamping structure, and the first clamping structure is clamped and matched with the second clamping structure.

5. The filtering device according to claim 4, characterized in that: One of the first clamping structure and the second clamping structure is a clamping slot, the other of the first clamping structure and the second clamping structure is a clamping rib, and the clamping slot is matched with the clamping rib.

6. The filtering device according to claim 1, characterized in that: The filter device further comprises a pull-out bracket, one end of the pull-out bracket along the length direction is detachably fixedly connected to one end of the first filter frame along the length direction.

7. The filtering device according to claim 6, characterized in that: The filtering device also includes a locking pin installed on the pull-out bracket, the locking pin is provided with a first locking structure, and the first filter frame is provided with a second locking structure. When the locking pin is in a locked position, the first locking structure cooperates with the second locking structure to lock the first filter frame to the pull-out bracket. When the locking pin is in an unlocked position, the first locking structure is separated from the second locking structure so that the first filter frame can be removed from the pull-out bracket.

8. The filtering device according to claim 6, characterized in that: The filtering device further comprises a housing, and the drawer bracket is mounted on the housing and is movable relative to the housing along a length direction of the housing.

9. The filtering device according to any one of claims 1 to 8, characterized in that The mesh number of the first filter is larger or smaller than the mesh number of the second filter.

10. A drying device, characterized in that: The drying equipment comprises the filtering device according to any one of claims 1 to 9.

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