Air filtering device mounted on wall surface

Abstract

The utility model relates to an air filtering device mounted on a wall surface, which comprises a mounting frame fixedly mounted on the wall surface, and a filter element detachably embedded in the inner side of the mounting frame, the mounting frame comprises an outer frame, an abutting piece, a first elastic piece and at least two limiting assemblies; the abutting piece is arranged at the rear part of the inner side of the outer frame in a manner of moving back and forth; the first elastic piece is arranged between the abutting piece and the outer frame and is used for applying a force for enabling the abutting piece to have a forward moving trend to the abutting piece; the limiting assemblies are arranged at the front part of the outer frame and are used for limiting the position of the filter element; the at least two limiting assemblies are located on the two opposite sides of the outer frame respectively, and the limiting assemblies and the abutting pieces abut against the filter element on the front side and the rear side respectively. The filter element is simple in structure and convenient to disassemble and assemble, and the filter element and the mounting frame can be quickly disassembled or assembled through the abutting piece, the first elastic piece and the limiting assembly, so that the stability and convenience of mounting and disassembling of the filter element are improved on the basis of ensuring the fixing firmness of the filter element, the disassembling and assembling process of the filter element is simplified, and the disassembling and assembling efficiency is improved; the labor cost is reduced.

Description

Technical Field

[0001] This utility model relates to an air filtration device installed on a wall, and is applicable to the field of air filtration technology. Background Technology

[0002] Air filtration devices are used to remove particulate matter, bacteria, viruses, and harmful gases from the air, and are widely used in indoor air purification, industrial emission control, and cleanrooms. These devices are typically installed inside wall vents. A typical air filtration device consists of an outer frame and a filter element. During installation, the outer frame is first fitted into the vent, and then the filter element is installed inside the frame. In existing filtration devices, the filter element and the outer frame are usually connected by screws, as shown in the structure disclosed in patent application number 202321489819.X, where the filter element is installed in the appropriate position and then secured with screws. While this structure ensures a secure installation, impurities and particulate matter in the air are trapped on the filter element during use, gradually reducing its permeability, filtration efficiency, and lifespan. Therefore, the filter element needs frequent cleaning or replacement. However, the existing structure's disassembly and installation process is cumbersome, inefficient, and labor-intensive. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, this utility model proposes an air filtration device that can be installed on a wall.

[0004] The technical solution adopted by this utility model is an air filtration device installed on the wall, including a mounting frame fixedly installed on the wall and a filter element detachably embedded in the inner side of the mounting frame. The mounting frame includes an outer frame, an abutment member disposed in the rear inner side of the outer frame that can move back and forth, a first elastic member disposed between the abutment member and the outer frame and used to apply a force to the abutment member to make it move forward, and at least two limiting components disposed in the front of the outer frame and used to limit the position of the filter element. The at least two limiting components are respectively located on opposite sides of the outer frame, and the limiting components and the abutment member abut the filter element on the front and rear sides respectively. When installing the filter device, first fix the mounting frame in the ventilation opening on the wall. Then, insert the filter element into the inner side of the outer frame from the front. The first elastic element applies a forward force to the abutment, allowing the abutment to abut against the rear of the filter element. After the filter element is embedded in the inner side of the outer frame, the limiting component is positioned in front of the filter element, allowing the abutment to press the filter element against the rear of the limiting component. This allows the limiting component and the abutment to jointly press the filter element, thus achieving the installation and fixation of the filter element. When it is necessary to remove the filter element, the limiting component can be released, allowing the filter element to pop out from the inner side of the outer frame under the combined action of the abutment and the first elastic element, thus achieving removal. The abutment and limiting component improve the stability and convenience of filter element installation and removal while ensuring the filter element is firmly fixed, simplifying the filter element installation and removal process, increasing efficiency, and reducing labor costs.

[0005] Furthermore, the mounting frame also includes a first sliding groove formed along the circumference of the outer frame on the inner side of the outer frame. The abutment is disposed in the first sliding groove, and both ends of the first elastic member are respectively connected to the rear part of the abutment and the rear wall of the first sliding groove. The first sliding groove restricts the movement range of the abutment and also provides constraint on the elastic force direction of the first elastic member, ensuring the stability of the movement of the abutment.

[0006] Furthermore, the limiting component includes a second sliding groove formed on the inner sidewall of the outer frame along the inward and outward directions, a limiting member slidably disposed within the second sliding groove, a driving component for driving the limiting member to slide inward, and a second elastic member connected between the limiting member and the sidewall of the second sliding groove and applying an outward force to the limiting member. The limiting member, through its sliding, has a first position and a second position located inside the first position. When the limiting member is in the first position, its inner end is located within the second sliding groove; when the limiting member is in the second position, its inner end slides out of the second sliding groove and is located in front of the abutment member. Specifically, the inner end of the limiting member is the end of the limiting member closest to the central axis of the outer frame. By forming the second sliding groove, the limiting member can switch between the first and second positions through sliding, thereby restricting or releasing the filter element. The driving component and the second elastic member can apply forces in opposite directions to the limiting member to facilitate displacement of the limiting member.

[0007] Furthermore, the drive assembly includes an operating member movable forward and backward in front of the limiting assembly; a third elastic member disposed between the operating member and the outer frame and applying a force to the operating member that tends to move backward; and a drive member fixedly disposed at the rear of the operating member and detachable from the limiting member, abutting against it. When the limiting member is in the first position, the operating member moves away from the outer frame, the third elastic member is stretched, and the drive member disengages from the limiting member. When the limiting member is in the second position, the operating member moves closer to the outer frame under the pulling force of the third elastic member, and the drive member abuts against the outer end of the limiting member. By pulling the operating member with the third elastic member, the operating member can apply pressure backward. The drive member is fixed at the rear of the operating member, allowing the operating member to drive the drive member to contact the limiting member, thereby pushing the limiting member from the first position to the second position. When the external force applied by the operator overcomes the pulling force of the third elastic member, causing the operating member to drive the drive member to disengage from the limiting member, the limiting member will move back to the first position under the action of the second elastic member.

[0008] Furthermore, the inward force exerted by the driving member on the limiting member under the action of the third elastic member is greater than the outward force exerted by the second elastic member on the limiting member. This ensures that the force exerted by the third elastic member can overcome the tension of the second elastic member, and ensures that the driving member can push the limiting member from the first position to the second position.

[0009] Furthermore, the rear end of the drive member has a first inclined surface that slopes from front to back and from inside to outside, and the outer end of the limiting member has a second inclined surface that slopes from inside to outside and from front to back. The first and second inclined surfaces are parallel and can slide in contact with each other without contacting the ground. The first and second inclined surfaces convert the rearward force applied to the drive member by the third elastic member into an inward force applied to the limiting member.

[0010] Furthermore, the inner end of the limiting member has a third inclined surface that slopes from front to back and from outside to inside, so that when the filter element needs to be embedded into the mounting frame, the backward force applied by the personnel to the filter element can be converted into an outward force applied to the limiting member by the third inclined surface, without having to pull the operating part, thus improving the ease of installation.

[0011] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0012] The wall-mounted air filtration device of this invention has a simple structure and is easy to assemble and disassemble. Through the abutment part, the first elastic part and the limiting component, the filter element and the mounting frame can be quickly disassembled or installed. This improves the stability and convenience of filter element installation and disassembly while ensuring the filter element is firmly fixed, simplifies the filter element assembly and disassembly process, improves assembly and disassembly efficiency, and reduces labor costs. Attached Figure Description

[0013] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar mechanisms or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0014] Figure 1 This is a structural schematic diagram of one embodiment of the present invention;

[0015] Figure 2 yes Figure 1 A cross-sectional view of the mounting frame in the illustrated embodiment;

[0016] Figure 3 yes Figure 2 The internal structure diagram of the embodiment shown is shown.

[0017] Figure 4 yes Figure 3 Enlarged view of the structure of region A in the illustrated embodiment;

[0018] The annotations in the attached figures are explained as follows:

[0019] 1. Mounting frame; 11. Outer frame; 12. Abutment part; 13. First elastic element; 14. First slide groove; 2. Filter element; 3. Limiting component; 31. Second slide groove; 32. Limiting element; 33. Drive component; 331. Operating component; 332. Third elastic element; 333. Drive component; 34. Second elastic element. Detailed Implementation

[0020] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] In the description of this utility model, it should be noted that the directional terms "front," "rear," "inner," and "outer" are defined according to the installation direction of the filter device. Specifically, when the filter device is normally installed, the side facing outwards from the wall is "front," and vice versa; the side closer to the central axis of the mounting frame is "inner," and vice versa. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0022] Reference Appendix Figure 1-4The air filtration device installed on the wall in this embodiment includes a mounting frame 1 fixedly installed on the wall and a filter element 2 detachably embedded inside the mounting frame 1. The mounting frame 1 includes an outer frame 11, an abutment 12 movably disposed at the rear inner side of the outer frame 11, a first elastic member 13 disposed between the abutment 12 and the outer frame 11 and used to apply a force to the abutment 12 to make it move forward, and at least two limiting components 3 disposed at the front of the outer frame 11 and used to limit the position of the filter element 2. The at least two limiting components 3 are respectively located on opposite sides of the outer frame 11, and the limiting components 3 and the abutment 12 abut against the filter element 2 on the front and rear sides respectively. When installing the filter device, the mounting frame 1 is first fixedly installed in the ventilation opening on the wall. The filter element 2 is then inserted into the inner side of the outer frame 11 from the front. The first elastic member 13 applies a forward force to the abutment, so that the abutment can abut against the rear of the filter element. After the filter element is embedded in the inner side of the outer frame, the limiting component is placed in front of the filter element, so that the abutment can press the filter element against the rear of the limiting component. This allows the limiting component and the abutment to jointly press against the filter element, thus achieving the installation and fixation of the filter element. When it is necessary to remove the filter element, the limiting component can be released from the filter element, allowing the filter element to pop out from the inner side of the outer frame under the combined action of the abutment and the first elastic member, thus achieving removal. The abutment and limiting component can improve the stability and convenience of filter element installation and removal while ensuring the firmness of filter element fixation, simplifying the filter element installation and removal process, improving installation and removal efficiency, and reducing labor costs.

[0023] In a more preferred embodiment, the mounting frame 1 further includes a first groove 14 formed circumferentially on the inner side of the outer frame 11, with the abutment 12 disposed within the first groove 14. The two ends of the first elastic member 13 are respectively connected to the rear portion of the abutment 12 and the rear wall of the first groove 14. The first groove 14 restricts the movement range of the abutment 12 and also constrains the direction of the elastic force of the first elastic member 13, ensuring the stability of the movement of the abutment 12.

[0024] In a more preferred embodiment, the limiting component 3 includes a second groove 31 formed on the inner sidewall of the outer frame 11 along the inward and outward directions, a limiting member 32 slidably disposed in the second groove 31, a driving component 33 for driving the limiting member 32 to slide inward, and a second elastic member 34 connected between the limiting member 32 and the sidewall of the second groove 31 and applying an outward force to the limiting member 32. The limiting member 32 has a first position and a second position located inside the first position by sliding. When the limiting member 32 is in the first position, the inner end of the limiting member 32 is located in the second groove 31. When the limiting member 32 is in the second position, the inner end of the limiting member 32 slides out of the second groove 31 and is located in front of the abutment member 12. Specifically, the inner end of the limiting member 32 is the end of the limiting member 32 that is close to the central axis of the outer frame 11. By opening the second slide groove 31, the limiting member 32 can be switched between the first position and the second position by sliding, thereby restricting or releasing the filter element 2. The driving component 33 and the second elastic member 34 can apply forces in opposite directions to the limiting member 32 so as to drive the limiting member 32 to move.

[0025] In a more preferred embodiment, the drive assembly 33 includes an operating member 331 movably disposed in front of the limiting assembly 3, a third elastic member 332 disposed between the operating member 331 and the outer frame 11 and applying a force to the operating member 331 to cause it to move backward, and a drive member 333 fixedly disposed at the rear of the operating member 331 and detachably abutting against the limiting member 32. When the limiting member 32 is in the first position, the operating member 331 moves away from the outer frame 11, the third elastic member 332 is stretched, and the drive member 333 disengages from the limiting member 32. When the limiting member 32 is in the second position, the operating member 331 moves closer to the outer frame 11 under the pulling force of the third elastic member 332, and the drive member 333 abuts against the outer end of the limiting member 32. The third elastic element 332 pulls the operating element 331, allowing the operating element 331 to apply pressure backward. The driving element 333 is fixed to the rear of the operating element 331, so that the operating element 331 can drive the driving element 333 to contact the limiting element 32, thereby pushing the limiting element 32 from the first position to the second position. When the external force applied by the person overcomes the pulling force of the third elastic element 332, causing the operating element 331 to drive the driving element 333 to disengage from the limiting element 32, the limiting element 32 will move from the second position back to the first position under the action of the second elastic element 34.

[0026] In a more preferred embodiment, the inward force exerted by the driving member 333 on the limiting member 32 under the action of the third elastic member 332 is greater than the outward force exerted by the second elastic member 34 on the limiting member 32. This ensures that the force exerted by the third elastic member 332 can overcome the tension of the second elastic member 34, and ensures that the driving member 333 can push the limiting member 32 from the first position to the second position.

[0027] In a more preferred embodiment, the rear end of the drive member 333 has a first inclined surface that slopes from front to back and from inside to outside, and the outer end of the limiting member 32 has a second inclined surface that slopes from inside to outside and from front to back. The first and second inclined surfaces are parallel and can slide in contact with each other without contacting the ground. The rearward force exerted by the third elastic member on the drive member 333 is converted into an inward force exerted on the limiting member 32 by the first and second inclined surfaces.

[0028] In a more preferred embodiment, the inner end of the limiting member 32 has a third inclined surface that slopes from front to back and from outside to inside, so that when the filter element 2 needs to be embedded into the mounting frame 1, the backward force applied by the personnel to the filter element 2 can be converted into an outward force applied to the limiting member 32 by the third inclined surface, without having to pull the operating member 331, thus improving the ease of installation.

[0029] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0030] The wall-mounted air filtration device of this invention has a simple structure and is easy to assemble and disassemble. Through the abutment part, the first elastic part and the limiting component, the filter element and the mounting frame can be quickly disassembled or installed. This improves the stability and convenience of filter element installation and disassembly while ensuring the filter element is firmly fixed, simplifies the filter element assembly and disassembly process, improves assembly and disassembly efficiency, and reduces labor costs.

[0031] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.

Claims

1. An air filtration device installed on a wall, characterized in that: The device includes a mounting frame (1) fixedly installed on the wall and a filter element (2) detachably embedded inside the mounting frame (1). The mounting frame (1) includes an outer frame (11), an abutment (12) movable back and forth on the rear inner side of the outer frame (11), a first elastic member (13) disposed between the abutment (12) and the outer frame (11) and used to apply a force to the abutment (12) to make it move forward, and at least two limiting components (3) disposed at the front of the outer frame (11) and used to limit the position of the filter element (2). The at least two limiting components (3) are respectively located on opposite sides of the outer frame (11), and the limiting components (3) and the abutment (12) abut against the filter element (2) on the front and rear sides respectively.

2. The wall-mounted air filtration device according to claim 1, characterized in that: The mounting frame (1) further includes a first groove (14) opened along the circumference of the outer frame (11) on the inner side of the outer frame (11), the abutment (12) is disposed in the first groove (14), and the two ends of the first elastic member (13) are respectively connected to the rear part of the abutment (12) and the rear wall of the first groove (14).

3. The wall-mounted air filtration device according to claim 1, characterized in that: The limiting component (3) includes a second slide groove (31) opened in the inner sidewall of the outer frame (11) along the inner and outer directions, a limiting member (32) slidably disposed in the second slide groove (31), a driving component (33) for driving the limiting member (32) to slide inward, and a second elastic member (34) connected between the limiting member (32) and the sidewall of the second slide groove (31) and applying an outward force to the limiting member (32). The limiting member (32) has a first position and a second position located inside the first position by sliding. When the limiting member (32) is in the first position, the inner end of the limiting member (32) is located in the second slide groove (31). When the limiting member (32) is in the second position, the inner end of the limiting member (32) slides out of the second slide groove (31) and is located in front of the abutment member (12).

4. The wall-mounted air filtration device according to claim 3, characterized in that: The drive assembly (33) includes an operating member (331) movable forward and backward in front of the limiting assembly (3), a third elastic member (332) disposed between the operating member (331) and the outer frame (11) and applying a force to the operating member (331) to make it tend to move backward, and a drive member (333) fixedly disposed at the rear of the operating member (331) and detachable from the limiting member (32). When the limiting member (32) is in the first position, the operating member (331) moves away from the outer frame (11), the third elastic member (332) is stretched, and the drive member (333) disengages from the limiting member (32). When the limiting member (32) is in the second position, the operating member (331) approaches the outer frame (11) under the pulling force of the third elastic member (332), and the driving member (333) abuts against the outer end of the limiting member (32).

5. The wall-mounted air filtration device according to claim 4, characterized in that: The inward force exerted by the driving member (333) on the limiting member (32) under the action of the third elastic member (332) is greater than the outward force exerted by the second elastic member (34) on the limiting member (32).

6. The wall-mounted air filtration device according to claim 4, characterized in that: The rear end of the drive member (333) has a first inclined surface that slopes from front to back and from inside to outside, and the outer end of the limiting member (32) has a second inclined surface that slopes from inside to outside and from front to back. The first inclined surface and the second inclined surface are parallel, and the first inclined surface and the second inclined surface can slide in contact with each other without disengaging from the ground.

7. The wall-mounted air filtration device according to claim 3, characterized in that: The inner end of the limiting member (32) has a third inclined surface that slopes from front to back and from outside to inside.

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