Filtering device and cleaning equipment

Abstract

The utility model discloses a filtering device and cleaning equipment. The filtering device comprises a filter element and a bracket, wherein the filter element comprises a filter element main body part capable of playing a filtering role and a filter element connecting part which is arranged on the peripheral side of the filter element main body part in a surrounding manner and is connected with the filter element main body part. The bracket comprises a cavity capable of accommodating the filter element main body part and a bracket connecting part capable of supporting the filter element connecting part; the filter element connecting part and the support connecting part have the fit clearance in the direction where the filter element main body part is subjected to airflow pressure so as to provide a space required by elastic deformation of the filter element connecting part in the direction of airflow pressure, so that the self-cleaning and dust-cleaning effect and efficiency of the filter element can be enhanced, and the use experience of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas filtering, in particular to a filtering device and a cleaning device provided with the filtering device. Background Art

[0002] The filter device is a key component of the purification system inside the vacuum cleaner. Its main function is to capture and separate dust, particles and other impurities in the air sucked in by the vacuum cleaner through the filter element, ensuring that the released air is as clean as possible and does not cause secondary pollution to the indoor environment. For example, a flat filter is a commonly used air filter device, which is mainly composed of a frame-shaped bracket and a filter element fixed in the bracket. The filter element is provided with a filter medium, which is usually a non-woven fabric, nylon mesh, activated carbon filter material, metal mesh, etc., which is used to capture and isolate particulate matter in the air or fluid.

[0003] As the number of operations and working time accumulate, the filter element in the filter device will be clogged due to the attachment of a large amount of dust, affecting the filtering effect. Utility Model Content

[0004] In view of this, the utility model provides a filtering device and a cleaning device provided with the filtering device.

[0005] In order to achieve the above-mentioned utility model purpose, the utility model provides the following technical solutions:

[0006] A filtering device comprises a filter element and a bracket detachably connected to the filter element, the filter element comprising a filter element main body capable of filtering, and a filter element connecting portion arranged around the circumference of the filter element main body and connected thereto, the bracket comprising a cavity capable of accommodating the filter element main body, and a bracket connecting portion capable of supporting the filter element connecting portion; the filter element connecting portion and the bracket connecting portion have a fitting gap in the direction in which the filter element main body is subjected to airflow pressure, so as to provide space for the filter element connecting portion to produce elastic deformation in the direction of the airflow pressure.

[0007] Optionally, in the above-mentioned filtering device, the filter element connecting portion includes:

[0008] An extended plate area, the extended plate area is disposed around the outside of the filter element main body and connected thereto, and the matching gap is formed between the extended plate area and the bracket connecting portion;

[0009] A lip edge area is disposed around the outer side of the extension plate area and connected thereto, and is sealed to the bracket connecting portion.

[0010] Optionally, in the above-mentioned filtering device, the support connecting portion includes:

[0011] A support plate area, the support plate area is located on the circumferential side of the circumferential side plate that encloses and forms the cavity and is connected thereto, and is located below the extension plate area of ​​the filter element, and forms the matching gap with the extension plate area;

[0012] A sealing connection area is located at the peripheral side of the support plate area and connected thereto, and is sealingly connected to the lip edge area of ​​the filter element.

[0013] Optionally, in the above-mentioned filtering device, a boss structure is protrudingly provided on the inner side surface of the sealing connection area;

[0014] The outer side surface of the lip area of ​​the filter element is provided with a clamping groove adapted to the boss structure.

[0015] Optionally, in the above-mentioned filtering device, the thickness of the lip area is greater than the thickness of the extension plate area.

[0016] Optionally, in the above-mentioned filtering device, the top of the lip area protrudes upward relative to the extended plate area; and / or the bottom of the lip area protrudes downward relative to the extended plate area.

[0017] Optionally, in the above-mentioned filtering device, the main body of the filter element includes filter paper that has been folded forward and backward for multiple times, and the multiple folding units of the filter paper are arranged in sequence along a first direction; in a vertical cross-section parallel to the first direction, the top end connection line of the multiple folding units presents a concave arc trajectory; and / or, the bottom end connection line of the multiple folding units presents a concave arc trajectory.

[0018] Optionally, the above-mentioned filtering device also includes a first limiting rib; the first limiting rib is located below the filter element main body; in the arrangement direction of the multiple folding units of the filter element main body, the two side walls of the circumferential side plate in the bracket used to enclose the cavity are respectively connected to the first limiting rib.

[0019] Optionally, the above-mentioned filtering device also includes a second limiting rib; the second limiting rib is located below the main body of the filter element; in a direction perpendicular to the arrangement direction of the multiple folding units of the main body of the filter element, the two side walls of the circumferential side plate in the bracket used to enclose the cavity are respectively connected to the second limiting rib.

[0020] A cleaning device is provided with the filtering device described above.

[0021] Compared with the prior art, in the filter device and cleaning equipment provided by the utility model, a matching gap is reserved between the filter element connection part and the bracket connection part. When the filter element connection part is elastically deformed under the pressure of airflow, the matching gap can provide the filter element connection part with the movement space required for deformation, so that when the filter element is subjected to airflow pressure, not only the filter element main body can shake due to elastic deformation, but also the filter element connection part can undergo elastic deformation and shake, thereby expanding and improving the side elasticity of the filter element, and can effectively improve the shaking amplitude of the filter element main body, thereby enhancing the self-cleaning and dust removal effect and efficiency of the filter element, and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic structural diagram of a filtering device provided in an embodiment of the utility model.

[0024] Figure 2 for Figure 1 A half-section view of the filter device in FIG.

[0025] Figure 3 A half-section view of a filter element provided in an embodiment of the utility model.

[0026] Figure 4 A schematic structural diagram of a filter element provided in an embodiment of the utility model.

[0027] Figure 5 and Figure 6 They are respectively isometric views of a bracket provided in embodiments of the utility model at different angles.

[0028] Figure 7 A schematic structural diagram of a pressing plate provided in an embodiment of the utility model.

[0029] Figure 8 An internal cross-sectional view of a cleaning device provided in an embodiment of the utility model.

[0030] Fig. 9 An exploded view of a cleaning device provided in an embodiment of the utility model.

[0031] in:

[0032] 1- bracket, 2- filter element, 3- pressure plate, 4- barrel, 5- lower cover, 6- upper cover, 7- flap,

[0033] 11-support plate area, 12-sealing connection area, 13-circumferential side plate,

[0034] 21-filter element main body, 22-filter element connecting part,

[0035] 100-fit clearance, 121-boss structure,

[0036] 141- first limiting rib, 142- second limiting rib,

[0037] 210- bottom gap, 211- folding unit,

[0038] 221- extension plate area, 222- lip area,

[0039] 2221 - snap-fit ​​groove, 222a - top of the lip area, 222b - bottom of the lip area. DETAILED DESCRIPTION

[0040] The utility model provides a filtering device and a cleaning device provided with the filtering device, which can have a good self-cleaning and dust-removing effect, and avoid clogging of a filter element due to a large amount of dust attached thereto, thereby affecting the filtering effect.

[0041] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] See also Figures 1 to 4 The embodiment of the utility model provides a filtering device, which includes a filter element 2 and a bracket 1 detachably connected to the filter element 2. Wherein:

[0043] The filter element 2 comprises a filter element main body 21 capable of filtering, and a filter element connecting part 22 (or an annular sealing ring) arranged around the filter element main body 21 and connected thereto, that is, the filter element main body 21 is located in the central cavity of the filter element connecting part 22 of the annular structure;

[0044] The bracket 1 includes a bracket connection portion capable of supporting the filter element connection portion 22 , and a cavity for accommodating the filter element main body portion 21 , and the cavity is generally formed by enclosing a circumferential side plate 13 .

[0045] Furthermore, the core of the present invention is that the filter element connecting portion 22 and the bracket connecting portion are in the direction of the airflow pressure received by the filter element main body 21 (see Figure 3There is a clearance of 100 on F1 and F2 (see Figure 2 ), the fitting gap 100 can provide the filter element connecting portion 22 with a moving space for elastic deformation.

[0046] When the filter element connecting part 22 is elastically deformed by the airflow pressure, the fitting gap 100 can provide the filter element connecting part 22 with the moving space required for deformation. Therefore, when the filter element 2 is subjected to the airflow pressure, not only the filter element main body 21 can vibrate due to the elastic deformation, but also the filter element connecting part 22 can elastically deform and vibrate, thereby expanding and improving the side elasticity of the filter element 2, and can effectively increase the vibration amplitude of the filter element main body 21, so as to enhance the self-cleaning and dust removal effect and efficiency of the filter element 2, and improve the user experience.

[0047] See also Figures 1 to 4 In some embodiments, the filter element connection portion 22 includes an extension plate area 221 and a lip area 222, wherein: the extension plate area 221 is an annular platform structure, which is arranged around the outer side of the filter element main body 21 and connected thereto, and the extension plate area 221 is located above the support plate area 11 of the bracket connection portion to form a matching gap 100 therewith; the lip area 222 is arranged around the outer side of the extension plate area 221 and connected thereto, and is used for sealing connection with the sealing connection area 12 of the bracket connection portion.

[0048] When the airflow passes through the filter element in the forward direction, filtration can be achieved. By controlling the reverse flow of the airflow, the filter element can achieve a self-cleaning and dust removal effect. Figure 3 : When the equipment where the filter device is located is working normally, the airflow passes through the filter body 21 of the filter element 2 from bottom to top, thereby achieving filtration. At this time, the filter body 21 is subjected to a positive pressure F1; when the filter device is in a self-cleaning state, the airflow blows from top to bottom toward the filter body 21 of the filter element 2, driving the dust attached to the filter body 21 to fall off, achieving dust cleaning, thereby avoiding filter blockage and improving the filtering effect. At this time, the filter body 21 is subjected to a reverse pressure F2.

[0049] Moreover, similar to the principle of a trampoline, the side elasticity of the filter element 2 can be improved by extending the plate area 221. When the filter element main body 21 is subjected to the above-mentioned pressure F1 or F2, the extended plate area 221 can drive the filter element main body 21 to shake up and down, and increase the shaking amplitude of the filter element main body 21, thereby enhancing the self-cleaning and dust removal effect and efficiency of the filter element and improving the user experience.

[0050] In some embodiments, the thickness of the extended plate area 221 in the filter element 2 is less than the thickness of the lip area 222, that is, the extended plate area 221 is thinner than the lip area 222. Figure 2The A area in the middle. Thus, the side elasticity of the filter element 2 can be improved by the extended plate area 221, and the stable installation of the filter element 2 can be ensured by the lip edge area 222. The thin extended plate area 221 can drive the filter element main body 21 to shake up and down, thereby improving the self-cleaning effect of the filter element 2.

[0051] For example, see Figure 2 and Figure 3 In some embodiments, the middle area of ​​the filter element connecting portion 22 is made thinner, that is, Figure 2 The A region in the middle is made thinner to form an extended plate region 221. At this time, see Figure 3 , the top 222a of the lip area 222 protrudes upward relative to the extended plate area 221, and / or, the bottom 222b of the lip area 222 protrudes downward relative to the extended plate area 221. Preferably, an annular hollow groove is formed in the middle area at the bottom of the filter element connecting portion 22. In a specific implementation, the outer side of the annular hollow groove overlaps the bracket 1, and the inner side protrudes relative to the bracket 1 toward the central cavity area of ​​the bracket 1, that is, the inner side of the annular hollow groove is suspended in the central cavity area of ​​the bracket 1, and is not overlapped with the bracket 1 nor supported by the bracket 1. Therefore, the annular hollow groove at the bottom of the filter element connecting portion 22 can provide the filter element main body 21 with the moving space required for shaking up and down. The moving space refers to the space required to ensure that the filter element main body 21 has a certain vibration amplitude when shaking up and down.

[0052] It should be noted that, in other embodiments, if the bottom of the filter element connecting portion 22 is not provided with the above-mentioned annular hollow groove structure, the filter device can also have a self-cleaning effect through the elasticity of the filter element main body 21 and the extended plate area 221. However, the above-mentioned annular hollow groove structure is conducive to increasing the vibration amplitude of the extended plate area 221 and the filter element main body 21 and improving the shaking effect. In specific implementation, the specific size of the extended plate area 221 and the annular hollow groove structure at the bottom thereof can be specifically designed by technicians according to actual needs, and the utility model does not make specific restrictions on this.

[0053] In some embodiments, the filter element connection portion 22 is filled with glue, so that the filter element 2 formed by the filter element main body 21 and the filter element connection portion 22 is an integrated connection structure. Figure 3As shown in , the filter element main body 21 includes filter paper that has been folded forward and backward for multiple times, and multiple folding units 211 of the filter paper are arranged in sequence along the first direction; in the vertical section parallel to the first direction, the top connection line of the multiple folding units 211 is a concave arc track L, and / or, the bottom connection line of the multiple folding units 211 is a concave arc track L. That is, the top ends of the multiple folding units 211 are located in the first arc surface S1, and / or, the bottom ends of the multiple folding units 211 are located in the second arc surface S2. It can be seen that the filter element 2 is arc-shaped, and compared with the flat filter element, the bottom gap 210 between adjacent folding units 211 will be larger. When the filter element 2 is blown, the filter element vibration will shake off more dust, which is beneficial to improve the self-cleaning ability of the filter device.

[0054] Also, see Figure 1 , Figure 2 , Figure 5 and Figure 6 In the filtering device provided by the utility model, the bracket 1 is detachably connected to the filter element 2, and the bracket 1 includes a circumferential side plate 13 and a bracket connecting portion, wherein: the circumferential side plate 13 forms a cavity capable of accommodating the filter element main body 21, that is, the filter element main body 21 is located in the accommodating cavity formed by the circumferential side plate 13 of the bracket 1; the bracket connecting portion can support the filter element connecting portion 22 and seal with it.

[0055] In some embodiments, the bracket connection portion is provided with a groove structure, through which the lip edge area 222 of the filter element connection portion 22 can be accommodated and sealed with it. For example, see Figure 2 and Figure 5 The bracket connection portion includes a support plate area 11 and a sealing connection area 12, wherein: the support plate area 11 is located on the circumferential side of the circumferential side plate 13 and connected thereto, and is located below the extension plate area 221 of the filter element 2, and the above-mentioned matching gap 100 is set between the extension plate area 221; the sealing connection area 12 is located on the circumferential side of the support plate area 11 and connected thereto, and is sealed with the lip area 222 of the filter element 2.

[0056] Further, in some embodiments, the above-mentioned "sealed connection" is provided with a snap-fit ​​structure. For example, see Figure 2 , the inner side of the sealing connection area 12 is protrudingly provided with a boss structure 121, and the outer side of the lip area 222 of the filter element 2 has a snap-in groove 2221 that overlaps and matches the boss structure 121. Therefore, when the filter element 2 is placed in the bracket 1, the filter element main body 21 of the filter element 2 is located in the accommodating cavity formed by the circumferential side plate 13 of the bracket 1, and the filter element connection part 22 of the filter element 2 is automatically overlapped and sealed with the sealing connection area 12 of the bracket 1. When the equipment where the filter element device is located is working, the filter element connection part 22 and the bracket 1 are sealed to ensure that the airflow is filtered only through the filter element main body 21.

[0057] It should be noted here that the "sealed connection" mentioned in this article can be a tightly fitting abutment / overlap joint, or it can be other connection methods such as snap-on, bonding, screw-fastened connection, etc., as long as the sealing connection area 12 of the bracket 1 and the lip area 222 of the filter element 2 are sealed and leak-proof at this point to ensure the normal filtering function of the filter element 2.

[0058] See also Figure 2 , Figure 5 and Figure 6 In some embodiments, a first limiting rib 141 is disposed at the bottom of the bracket 1. The first limiting rib 141 is located below the filter element main body 21; Figure 3 In the first direction shown in FIG, two side walls of the circumferential side plate 13 are respectively connected to the first limiting ribs 141.

[0059] Furthermore, a second limiting rib 142 is also provided at the bottom of the bracket 1. The second limiting rib 142 is located below the filter element main body 21; in a direction perpendicular to the arrangement direction of the multiple folding units 211 of the filter element main body 21, the two side walls of the circumferential side plate 13 are respectively connected to the second limiting rib 142. Figure 2 and Figure 6 As shown in , the first limiting rib 141 and the second limiting rib 142 are connected at the intersection. Furthermore, the first limiting rib 141 and the second limiting rib 142 are both arc-shaped ribs adapted to the arc-shaped bottom surface of the filter element main body 21. It can be understood that although the first limiting rib 141 and the second limiting rib 142 are both located at the bottom of the filter element main body 21 and adapted to its shape, the first limiting rib 141 and the second limiting rib 142 both maintain a preset gap greater than zero with the filter element main body 21. It can be seen that the circumferential side plate 13 and the above-mentioned first limiting rib 141 and the second limiting rib 142 in the bracket 1 can limit the deformation amplitude of the filter element.

[0060] See also Figure 1 , Figure 7 and Figure 8 In some embodiments, a pressing plate 3 (i.e., a handle) is hingedly provided on the outer side of the bracket 1. When installing the filter device, the pressing plate 3 is rotated to a horizontal position (such as Figure 1 ), the outer protrusion of the pressing plate 3 is engaged with the limiting groove of the filter device installation structure (for example, the lower cover 5 of the vacuum cleaner), so as to fix the filter device in the installation structure inside the device; when unlocking the filter device, the pressing plate 3 is rotated to a vertical (or non-horizontal) position (not shown in the figure, but can be referred to Figure 1 The outer protrusion of the pressure plate 3 is disengaged from the limiting groove of the filter device mounting structure, and the filter device is unlocked, thereby the filter device can be removed from the cleaning device.

[0061] In specific implementation, depending on different application scenarios, the material of the bracket 1 can be a paper frame, a plastic frame, an aluminum frame or a galvanized iron frame to meet different strength requirements and usage environments.

[0062] In summary, it can be seen that the filtering device provided in the embodiment of the utility model can be applied to many occasions requiring air purification (or other gas purification, fluid coarse filtration).

[0063] In addition, an embodiment of the utility model further provides a cleaning device, in which the filtering device described above is provided.

[0064] When the filter device in the cleaning equipment is in a self-cleaning state, the flap 7 in the air duct in the cleaning equipment is opened, and the gas replenished in the air duct enters the barrel 4 from the filter device, which will generate a downward force F2 on the filter device. This force will cause the filter element main body 21 in the filter device to deform downward. At this time, the first limiting rib 141 and the second limiting rib 142 mentioned above can prevent the filter element main body 21 from excessive deformation, thereby ensuring the deformation displacement of the filter element 2.

[0065] When the cleaning equipment is in normal working state, that is, the filter device plays a filtering role and is not self-cleaning, the flap 7 in the air duct of the cleaning equipment is closed, and the pressure P1 in the barrel 4 and the pressure P2 generated in the air duct, P1>P2, cause the filter element main body 21 of the filter device to be subjected to a force F1 from bottom to top, thereby realizing the shaking self-cleaning effect of the filter element.

[0066] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed.

[0067] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0068] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A filtering device, comprising a filter element (2) and a bracket (1) detachably connected to the filter element (2), wherein the filter element (2) comprises a filter element main body (21) capable of filtering, and a filter element connecting part (22) arranged around the filter element main body (21) and connected thereto, wherein the bracket (1) comprises a cavity capable of accommodating the filter element main body (21), and a bracket connecting part capable of supporting the filter element connecting part (22), characterized in that: The filter element connecting portion (22) and the bracket connecting portion have a matching gap (100) in the direction in which the filter element main body (21) is subjected to airflow pressure, so as to provide space for the filter element connecting portion (22) to produce elastic deformation in the direction of the airflow pressure.

2. The filtering device according to claim 1, characterized in that: The filter element connecting portion (22) comprises: An extended plate area (221), the extended plate area (221) is disposed around the outside of the filter element main body (21) and connected thereto, and the matching gap (100) is formed between the extended plate area (221) and the bracket connecting portion; A lip edge area (222), the lip edge area (222) is arranged around the outer side of the extension plate area (221) and connected thereto, and is sealedly connected to the bracket connecting portion.

3. The filtering device according to claim 2, characterized in that: The support connection portion comprises: A support plate area (11), the support plate area (11) is located on the circumferential side of the circumferential side plate (13) that encloses and forms the cavity and is connected thereto, and is located below the extension plate area (221) of the filter element (2), and the matching gap (100) is formed between the support plate area (11) and the extension plate area (221); A sealing connection area (12), the sealing connection area (12) is located on the peripheral side of the support plate area (11) and connected thereto, and the sealing connection area (12) is sealingly connected to the lip edge area (222) of the filter element (2).

4. The filtering device according to claim 3, characterized in that: The inner side surface of the sealing connection area (12) is protrudingly provided with a boss structure (121); The outer side surface of the lip region (222) of the filter element (2) is provided with a snap-fitting groove (2221) adapted to the boss structure (121).

5. The filtering device according to claim 3, characterized in that: The thickness of the lip region (222) is greater than the thickness of the extension plate region (221).

6. The filtering device according to claim 3, characterized in that: The top (222a) of the lip edge area (222) protrudes upward relative to the extension plate area (221); And / or, the bottom (222b) of the lip area (222) protrudes downward relative to the extension plate area (221).

7. The filtering device according to claim 1, characterized in that: The filter element main body (21) comprises filter paper that has been folded forward and backward multiple times, and the multiple folding units (211) of the filter paper are arranged in sequence along a first direction; In a vertical cross section parallel to the first direction, a line connecting the top ends of the plurality of folding units (211) forms a concave arc track (L); and / or a line connecting the bottom ends of the plurality of folding units (211) forms a concave arc track (L).

8. The filtering device according to claim 1, characterized in that: Also includes a first limiting rib (141); The first limiting rib (141) is located below the filter element main body (21); in the arrangement direction of the multiple folding units (211) of the filter element main body (21), the two side walls of the circumferential side plate (13) in the bracket (1) for enclosing and forming the cavity are respectively connected to the first limiting rib (141).

9. The filtering device according to claim 1, characterized in that: Also includes a second limiting rib (142); The second limiting rib (142) is located below the filter element main body (21); in a direction perpendicular to the arrangement direction of the multiple folding units (211) of the filter element main body (21), the two side walls of the circumferential side plate (13) in the bracket (1) for enclosing and forming the cavity are respectively connected to the second limiting rib (142).

10. A cleaning device, characterized in that: A filtering device according to any one of claims 1 to 9 is provided.

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