Air filter convenient to disassemble

Abstract

The utility model relates to the technical field of air filters, and discloses an air filter convenient to disassemble, which comprises a shell, the left end of the shell is fixedly connected with a fan communicated with the interior of the shell, the surface of the left side of the interior of the shell is fixedly connected with an elastic frame, and a filter element is movably attached to the right side of the elastic frame in the shell. A protective net communicated with the interior of the shell is movably attached to the right end of the shell; limiting mechanisms are jointly arranged on the surfaces of the front side and the rear side of the shell and the front side and the rear side of the protective net. A butt joint mechanism is arranged on the upper surface of the shell and the upper surface of the protective net. Through the synergistic effect of the butt joint mechanism and the limiting mechanism, rapid and tool-free mounting and dismounting of the protective net are achieved, and the protective net is remarkably different from a traditional bolt fixing mode; when the protective net is installed, the protective net only needs to be attached to the shell from right to left. During disassembly, the protection net can be easily pulled out rightwards only by overcoming the elasticity of the spring to pull the pawl backwards to be separated from the ratchet wheel and releasing the limitation on the clockwise rotation of the ratchet wheel.

Description

Technical Field

[0001] This utility model relates to the field of air filter technology, specifically an air filter that is easy to disassemble. Background Technology

[0002] An air filter is an air filtration device, generally used in clean workshops, clean factories, laboratories and clean rooms, or for dust prevention of electronic, mechanical and communication equipment.

[0003] Traditional air filters are often fixed in place by a fixing device. However, this method makes it difficult to disassemble the air filter. On the other hand, directly fixing the filter screen by inserting it in place results in insufficient stability of the filter screen after insertion, causing gaps between the filter screen and the housing, which leads to a decrease in filtration efficiency.

[0004] A Chinese patent discloses a detachable medium-efficiency air filter (authorization announcement number CN222900580U). The patented technology includes:

[0005] The filter screen is supported by a support component installed inside the housing and a removable protective net installed at the air inlet end of the housing. At the same time, a pressure limiting ring is installed on the inner side of the protective net to limit the pressure of the filter screen. This increases the stability of the filter screen installed inside the housing by the support component and limits the pressure of the other end of the filter screen by the pressure limiting ring. This prevents the problem of reduced filtration effect caused by gaps between the filter screen and the housing.

[0006] The hinge installed between the housing and the protective mesh allows the protective mesh to rotate around the hinge at the air inlet end of the housing. The other end of the protective mesh is fixed to the ear plate, which has a hole in the surface and a positioning screw installed inside. The end of the positioning screw is screwed into a screw hole on the surface of the housing, so that the protective mesh is fixed to the housing by the positioning screw. When the protective mesh is fixed to the housing, the pressure limiting ring installed on the inner side of the protective mesh limits the pressure of the filter screen.

[0007] However, it has certain drawbacks: when disassembling or installing the protective screen, tools must be used to repeatedly tighten and loosen the positioning screws, which is cumbersome and time-consuming; at the same time, frequent disassembly and assembly can easily lead to stripped screws or loss of positioning screws, increasing maintenance costs; this bolt-fixing structure not only reduces the efficiency of filter replacement, but also lacks practicality in busy maintenance scenarios due to the need for special tools, thus restricting the need for rapid maintenance of air filtration equipment. Utility Model Content

[0008] The purpose of this invention is to provide an air filter that is easy to disassemble, so as to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] An easily disassembled air filter includes a housing, a fan connected to the left end of the housing and communicating with the inside therein, an elastic frame fixed to the left inner surface of the housing, a filter element movably attached to the right side of the elastic frame inside the housing, and a protective net connected to the inside of the housing movably attached to the right end of the housing.

[0011] The front and rear surfaces of the housing and the protective net are both provided with a limiting mechanism; the upper surface of the housing and the protective net is provided with a docking mechanism, which includes a C-shaped plate. A rotating rod is rotatably connected through the upper surface of the C-shaped plate. A gear is fixedly connected to the lower end of the rotating rod. A rack is meshed with the rear end of the gear. A ratchet is fixedly sleeved on the outside of the rotating rod above the C-shaped plate. A locking element is provided on the upper surface of the C-shaped plate in front of the rotating rod.

[0012] As a further embodiment of this utility model: the limiting mechanism includes a limiting block one, a limiting rod fixedly connected to the left side surface of the limiting block one, and a limiting block two movably sleeved on the outside of the limiting rod.

[0013] As a further embodiment of this utility model: the locking component includes a spring, with a connecting block and a pawl fixedly connected to the front and rear ends of the spring, respectively, and a connecting rod rotatably connected to the left end of the pawl.

[0014] As a further embodiment of this utility model: the lower end of the C-shaped plate is fixed to the upper surface of the shell, and the right end of the rack is fixed to the upper surface of the protective net.

[0015] As a further embodiment of this utility model: the first limiting block is fixed to one side surface of the protective net, and the second limiting block is fixed to one side surface of the shell.

[0016] As a further embodiment of this utility model: the pawl is attached to the ratchet, and the lower ends of the connecting block and the connecting rod are both fixed to the upper surface of the C-shaped plate.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This invention achieves rapid, tool-free installation and disassembly of the protective net by combining a docking mechanism and a limiting mechanism, significantly different from traditional bolt fixing methods. When installing the protective net, simply place it against the housing from right to left; limiting block one and limiting rod then insert into limiting block two, ensuring accurate positioning of the protective net without misalignment. Simultaneously, the rack and pinion on the protective net engages with the gears, driving the gears, rotating rod, and ratchet to rotate freely counterclockwise. The pawl, under the action of a spring, automatically engages with the ratchet teeth, completing a one-way locking, thus securely installing the protective net and pressing it against the filter element. For disassembly, simply overcome the spring force and pull the pawl backward to disengage it from the ratchet, releasing the restriction on the ratchet's clockwise rotation, allowing the protective net to be easily pulled out to the right. The entire process requires no tools, making operation extremely simple and quick, greatly improving the efficiency of filter element replacement or maintenance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an air filter that is easy to disassemble;

[0020] Figure 2 A partial cross-sectional view of an easily removable air filter;

[0021] Figure 3 This is a schematic diagram of a limiting mechanism in an easily disassembled air filter;

[0022] Figure 4 This is a schematic diagram of the docking mechanism in an easily disassembled air filter;

[0023] Figure 5 This is a schematic diagram of the locking mechanism in an easily removable air filter.

[0024] In the diagram: 1. Housing; 2. Fan; 3. Elastic frame; 4. Filter element; 5. Protective net; 6. Limiting mechanism; 7. Limiting block one; 8. Limiting rod; 9. Limiting block two; 10. Docking mechanism; 11. C-shaped plate; 12. Rotating rod; 13. Gear; 14. Rack; 15. Ratchet; 16. Locking element; 17. Spring; 18. Connecting block; 19. Pawl; 20. Connecting rod. Detailed Implementation

[0025] Please see Figures 1-3 In this embodiment of the present invention, an air filter that is easy to disassemble includes a housing 1, a fan 2 connected to the left end of the housing 1 and communicating with the inside therein, an elastic frame 3 fixed to the left inner surface of the housing 1, a filter element 4 movably attached to the right side of the elastic frame 3 inside the housing 1, and a protective net 5 connected to the inside therein movably attached to the right end of the housing 1.

[0026] Fan 2 draws air outward from inside casing 1, that is, the air flows from right to left;

[0027] Protective net 5 is used to secure filter element 4;

[0028] Filter element 4 is used to filter the air;

[0029] The elastic frame 3 presses the filter element 4 with its elasticity, making it stably positioned in the housing 1.

[0030] exist Figure 1 , Figures 3-5 In the middle: Both the front and rear surfaces of the shell 1 and the protective net 5 are provided with a limiting mechanism 6. The limiting mechanism 6 includes a limiting block 1 7, which is fixed to one side surface of the protective net 5. A limiting rod 8 is fixed to the left side surface of the limiting block 1 7. A limiting block 2 9 is movably sleeved on the outside of the limiting rod 8. The limiting block 2 9 is fixed to one side surface of the shell 1.

[0031] The limiting mechanism 6 ensures that the protective net 5 fits the shell 1 accurately and does not misalign.

[0032] The upper surfaces of the housing 1 and the protective net 5 are jointly provided with a docking mechanism 10. The docking mechanism 10 includes a C-shaped plate 11. The lower end of the C-shaped plate 11 is fixed to the upper surface of the housing 1. A rotating rod 12 is rotatably connected through the upper surface of the C-shaped plate 11. A gear 13 is fixed to the lower end of the rotating rod 12. A rack 14 is meshed with the rear end of the gear 13. The right end of the rack 14 is fixed to the upper surface of the protective net 5. A ratchet 15 is fixedly sleeved on the outside of the rotating rod 12 above the C-shaped plate 11. A locking member 16 is provided on the upper surface of the C-shaped plate 11 in front of the rotating rod 12. The locking member 16 includes a spring 17. A connecting block 18 and a pawl 19 are fixed to the front and rear ends of the spring 17, respectively. The pawl 19 is attached to the ratchet 15. A connecting rod 20 is rotatably connected to the left end of the pawl 19. The lower ends of the connecting block 18 and the connecting rod 20 are both fixed to the upper surface of the C-shaped plate 11.

[0033] Pad 19 engages with ratchet 15, allowing ratchet 15 and lever 12 to rotate counterclockwise but not clockwise. Pulling pad 19 away from ratchet 15 allows ratchet 15 and lever 12 to rotate clockwise.

[0034] When the protective net 5 is attached to the housing 1 from right to left, the rack 14 approaches the gear 13 until it meshes with the gear 13, and drives the gear 13 and the rotating rod 12 to rotate counterclockwise, thereby completing the installation of the protective net 5; by pulling the pawl 19 away from the ratchet 15, the protective net 5 can be pulled out to the right, thereby disassembling the protective net 5.

[0035] The C-shaped plate 11 and the rotating rod 12 can be rotatably connected by a bearing. The outer ring of the bearing is fixed to the C-shaped plate 11, and the inner ring of the bearing is fixed to the outside of the rotating rod 12.

[0036] The working principle of this utility model is as follows: During filtration, the fan 2 is started to draw air outward from inside the housing 1, causing the air to flow from right to left, passing through the protective net 5, filter element 4, and elastic frame 3 in sequence. The filter element 4 filters the air. During installation, the filter element 4 is inserted from the right side of the housing 1, with its left end face elastically abutting against the elastic frame 3. Then, the protective net 5 is attached to the right end of the housing 1 from right to left. During this process, the limiting block 7 on the protective net 5 drives the limiting rod 8 to insert into the limiting block 9, achieving lateral limiting to prevent misalignment. At the same time, the rack 14 on the protective net 5 moves to the left and meshes with the gear 13, driving the gear... When the rotating rod 12 and the fixed rod 13 rotate counterclockwise, the ratchet 15 on the rotating rod 12 rotates counterclockwise accordingly. The pawl 19, under the action of the spring 17, abuts against the ratchet 15, allowing it to rotate freely counterclockwise while preventing clockwise rotation, thus completing the installation of the protective net 5 and pressing the filter element 4. When disassembling, the pawl 19 is pulled away from the ratchet 15 by overcoming the elastic force of the spring 17, releasing the lock on the clockwise rotation of the ratchet 15. At this time, the protective net 5 can be moved to the right and pulled out. The rack 14 drives the gear 13, the rotating rod 12 and the ratchet 15 to rotate clockwise. After removing the protective net 5, the filter element 4 can be taken out for replacement or maintenance.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. An air filter that is easy to disassemble, comprising a housing (1), wherein a fan (2) is fixedly connected to the left end of the housing (1) and communicates with the inside therein, and an elastic frame (3) is fixedly connected to the left inner surface of the housing (1), a filter element (4) is movably attached to the right side of the elastic frame (3) inside the housing (1), and a protective net (5) is movably attached to the right end of the housing (1) and communicates with the inside therein. Its features are, The front and rear surfaces of the housing (1) and the protective net (5) are both provided with a limiting mechanism (6); the upper surfaces of the housing (1) and the protective net (5) are both provided with a docking mechanism (10), the docking mechanism (10) includes a C-shaped plate (11), the upper surface of the C-shaped plate (11) is rotatably connected with a rotating rod (12), the lower end of the rotating rod (12) is fixedly connected with a gear (13), the rear end of the gear (13) is meshed with a rack (14), the outside of the rotating rod (12) is fixedly sleeved above the C-shaped plate (11), and the upper surface of the C-shaped plate (11) is provided with a locking element (16) in front of the rotating rod (12).

2. The easily disassembled air filter according to claim 1, characterized in that, The limiting mechanism (6) includes a limiting block one (7), a limiting rod (8) is fixedly connected to the left side surface of the limiting block one (7), and a limiting block two (9) is movably sleeved on the outside of the limiting rod (8).

3. The easily disassembled air filter according to claim 1, characterized in that, The locking element (16) includes a spring (17), with a connecting block (18) and a pawl (19) fixedly connected to the front and rear ends of the spring (17), respectively. A connecting rod (20) is rotatably connected to the left end of the pawl (19).

4. The easily disassembled air filter according to claim 1, characterized in that, The lower end of the C-shaped plate (11) is fixed to the upper surface of the shell (1), and the right end of the rack (14) is fixed to the upper surface of the protective net (5).

5. The easily disassembled air filter according to claim 2, characterized in that, The first limiting block (7) is fixed to one side surface of the protective net (5), and the second limiting block (9) is fixed to one side surface of the shell (1).

6. The easily disassembled air filter according to claim 3, characterized in that, The pawl (19) is attached to the ratchet (15), and the lower ends of the connecting block (18) and the connecting rod (20) are fixed to the upper surface of the C-shaped plate (11).

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