Quick release type primary filter

Abstract

The utility model belongs to the technical field of filters, and particularly relates to a quick-release primary filter which comprises a windward side frame, a leeward side frame, a filter element body and a filter element clamping mechanism. The rear side of the windward side frame and the rear side of the leeward side frame are rotatably connected through a hinge structure, and closed clamping structures are arranged on the front side of the windward side frame and the front side of the leeward side frame. The filter element clamping mechanism comprises a first filter element supporting unit fixedly connected with the windward side frame and a second filter element supporting unit fixedly connected with the leeward side frame, and the first filter element supporting unit and the second filter element supporting unit are matched to clamp and fix the filter element body. Through the quick-release structural design, non-adhesive clamping and fixing and a modularized supporting system, the core problems that a traditional filter is difficult to detach, easy to damage and high in cost are solved in a targeted mode, and the maintenance convenience, the structural stability, the cost control and the filtering performance are remarkably improved; and the method is particularly suitable for industrial and civil air filtering scenes sensitive to maintenance efficiency and long-term operation cost.

Description

Technical Field

[0001] This utility model belongs to the field of filter technology, specifically relating to a quick-release pre-filter. Background Technology

[0002] With the rapid development of modern industry and the increasing demands for air quality, air filtration equipment has been widely used in various fields. As the first line of defense in an air filtration system, the pre-filter plays a crucial role in filtering larger particulate pollutants from the air. Its performance and ease of maintenance directly affect the overall operation and cost of the air filtration system.

[0003] In existing technology, traditional pre-filters typically consist of a frame and a filter element housed within the frame. Taking a common fixing method as an example, grooves are created inside the frame, and the top and bottom ends of the filter element are fixed to these grooves with adhesive. While this fixing method ensures a certain degree of stability in the connection between the filter element and the frame, maintaining structural integrity during air filtration and guaranteeing normal filtration operation, it has several drawbacks from a long-term use and maintenance perspective.

[0004] As the primary filtration device in an air conditioning system, the pre-filter plays a crucial role in protecting internal components, improving operating efficiency, and ensuring indoor air quality. However, due to the complex operating environment of air conditioners, after a period of use, the filter element accumulates a large amount of dust, impurities, and other contaminants, leading to a decrease in filtration efficiency. At this point, replacement or cleaning of the filter element is necessary. However, because the filter element is tightly bonded to the frame with adhesive, it is difficult to remove the filter element from the frame. The current common practice to solve this problem is to disassemble the entire pre-filter and have it handled by a specialized disassembly department. However, this method often requires forceful disassembly, which not only consumes significant manpower, resources, and time, but also easily damages the frame during disassembly, affecting its reusability and increasing the overall operating cost of the air filtration system. Utility Model Content

[0005] The purpose of this invention is to propose a quick-release primary filter that solves the problems of difficult filter element removal, high maintenance costs, and easy damage to the frame during maintenance, thereby meeting the needs of efficient and convenient maintenance, reducing maintenance costs, and improving the overall operating efficiency and stability of the air filtration system.

[0006] The above objectives are achieved through the following technical solutions:

[0007] A quick-release pre-filter includes a windward side frame, a leeward side frame, a filter element body, and a filter element clamping mechanism. The rear sides of the windward side frame and the leeward side frame are rotatably connected by a hinge structure, while the front sides of both frames are equipped with closing snap-fit ​​structures. When the windward side frame and the leeward side frame are closed, a filter element placement compartment is formed between them. The filter element clamping mechanism, located within the filter element placement compartment, includes a first filter element support unit fixedly connected to the windward side frame and a second filter element support unit fixedly connected to the leeward side frame. The filter element body is disposed between the first and second filter element support units, which cooperate to clamp and fix the filter element body.

[0008] Preferably, the first filter element support unit includes several windward filter element support frames, all of which are arranged in parallel and at intervals and are fixedly connected to the windward frame respectively; the second filter element support unit includes several leeward filter element support frames, all of which are arranged at staggered intervals relative to the windward filter element support frames and are fixedly connected to the leeward frame respectively; all the windward filter element support frames and all the leeward filter element support frames cooperate with each other, so that the filter element body is arranged in a wave shape.

[0009] Preferably, the surface of the second filter element support unit is covered with a suitable support mesh.

[0010] Preferably, the support mesh is made of metal mesh.

[0011] Preferably, the windward side frame includes a windward side rectangular hollow frame for fixing the first filter element support unit. The rear side of the windward side rectangular hollow frame is a first rear edge structure with the hinge structure, the front side of the windward side rectangular hollow frame is a first front edge structure with the closing snap-fit ​​structure, and the left and right sides of the windward side rectangular hollow frame are respectively provided with first windproof side edges.

[0012] Preferably, the leeward side frame includes a double-wind side rectangular hollow frame for fixing the second filter element support unit, the rear side of the leeward side rectangular hollow frame is a second rear edge structure with the hinge structure, the front side of the leeward side rectangular hollow frame is a second front edge structure with the closing snap-fit ​​structure, and the left and right sides of the leeward side rectangular hollow frame are respectively provided with second windproof side edges.

[0013] Preferably, the closed snap-fit ​​structure includes a male snap-fit ​​structure disposed on the windward side frame and a female snap-fit ​​structure disposed on the leeward side frame, wherein the male snap-fit ​​structure and the female snap-fit ​​structure achieve locking and unlocking based on elastic deformation.

[0014] Preferably, both the windward and leeward frames are welded from alloy materials.

[0015] Preferably, mounting holes are provided on the windward side frame and / or the leeward side frame.

[0016] This technical solution has the following beneficial effects:

[0017] I. Convenient and efficient maintenance features significantly reduce disassembly difficulty and cost.

[0018] Glue-free quick-release structure: This technical solution achieves rapid opening and closing of the frame through a hinged structure and a snap-fit ​​structure. The filter element body is clamped and fixed by the first and second filter element support units, eliminating the need for glue. During maintenance, simply unlock the snap-fit ​​structure and open the frame to directly disassemble or replace the filter element, completely solving the problem of "difficult filter element removal" and avoiding the manpower and time consumption of traditional forced disassembly.

[0019] Avoid frame damage and improve reusability: This technical solution uses a modular quick-release structure to keep the frame intact during maintenance and make it reusable, which significantly reduces the cost of frame replacement and thus reduces the operating cost of the entire filtration system.

[0020] II. Structural optimization enhances stability and filtration performance

[0021] The wave-shaped filter element placement enhances fixation and filtration efficiency: the first and second filter element support frames are staggered and spaced apart, so that the filter element body is fixed in a wave shape. Compared with the traditional planar fixing method, this not only increases the support strength of the filter element, but also improves the filtration efficiency by increasing the effective filtration area of ​​the filter element. At the same time, the wave-shaped structure can evenly distribute the airflow pressure and extend the service life of the filter element.

[0022] Enhanced durability with support mesh and alloy frame: The metal support mesh on the surface of the second filter element support unit can further fix the filter element and prevent it from shaking or breaking in high-speed airflow; the frame is welded with alloy material, which is more robust than traditional materials, has strong corrosion resistance, and can be used for a long time in complex environments.

[0023] III. Modular design improves installation and maintenance efficiency

[0024] Quick opening and closing and integrated design: The frame achieves single-sided rotation opening and closing through a hinged structure, and is quickly locked with a flexible snap-fit ​​structure. Disassembly and assembly can be completed without tools, which is especially suitable for scenarios such as air conditioning systems that require regular maintenance, greatly reducing downtime for maintenance and improving the overall operating efficiency of the air filtration system.

[0025] Standardized installation interface: The mounting holes on the frame support standardized installation, adapting to the existing installation structure of the filtration system without additional modification, ensuring strong compatibility and reducing installation costs.

[0026] IV. Environmental and Economic Advantages

[0027] Reduced waste of consumables: No glue or other consumables are needed to fix the filter element. Only the filter body needs to be replaced when the filter element is replaced. The frame can be reused, which is in line with the concept of environmental protection.

[0028] Reduced maintenance frequency: The corrugated filter element and support mesh structure enhance the filter element's resistance to contamination, which may extend the single use cycle and indirectly reduce the maintenance frequency. Attached Figure Description

[0029] Figure 1 A top view of the structure of the windward and leeward frames.

[0030] Figure 2 A schematic diagram of the frontal structure where the windward and leeward frames are combined;

[0031] Figure 3 A top view of the combined windward and leeward frame structures;

[0032] Figure 4 A schematic diagram of the right side structure where the windward and leeward frames are combined;

[0033] Figure 5 This is a schematic diagram of the left-side cross-sectional structure of a preferred quick-release primary filter.

[0034] in:

[0035] 1. Windward side frame; 1.1 Windward side rectangular hollow frame; 1.2 First rear edge structure; 1.3 First front edge structure; 1.4 First windproof side edge; 2. Leeward side frame; 2.1 Leeward side rectangular hollow frame; 2.2 Second rear edge structure; 2.3 Second front edge structure; 2.4 Second windproof side edge; 3. Filter element body; 4. Hinge structure; 5. Windward side filter element support frame; 6. Leeward side filter element support frame; 7. Support mesh; 8. Male snap-fit ​​structure; 9. Female snap-fit ​​structure; 10. Mounting hole. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments.

[0037] Therefore, the following detailed description of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0038] Example 1

[0039] This embodiment discloses a quick-release primary filter. As a preferred implementation of this technical solution, its structural design takes into account both filtration efficiency and convenient maintenance requirements. Specifically, it includes a windward side frame 1, a leeward side frame 2, a filter element body 3, and a filter element clamping mechanism.

[0040] Frame System: The windward frame 1 and the leeward frame 2 are rotatably connected by a rear hinge structure 4. This hinge structure 4 can be a metal hinge or a flexible plastic hinge, allowing the two frames to rotate relative to each other around the hinge axis, realizing the opening and closing action of the filter device. The front sides of the windward frame 1 and the front sides of the leeward frame 2 are provided with closing snap-fit ​​connections, which can be in the form of snap-fit ​​and slot engagement, forming a stable mechanical connection when the frames are closed. Function: The hinge structure 4 and the closing snap-fit ​​structure together constitute an openable and closable housing. When the windward frame 1 and the leeward frame 2 are closed, a closed filter cartridge placement compartment is formed between the two frames, providing installation space for the filter cartridge body 3 and isolating unfiltered air; when opened, the filter cartridge can be quickly exposed for easy maintenance.

[0041] Filter cartridge clamping mechanism: Located in the filter cartridge placement chamber, it includes a first filter cartridge support unit (such as a mesh support plate or elastic pressure strip) fixedly connected to the windward side frame 1 and a second filter cartridge support unit (designed as a groove or limiting protrusion) fixedly connected to the leeward side frame 2. The two support units are positioned relative to each other, and the spacing matches the thickness of the filter cartridge body 3. Function: When the filter cartridge body 3 is placed between the two, the first and second filter cartridge support units clamp and fix the filter cartridge through mechanical cooperation (such as elastic clamping or limiting engagement), preventing it from shifting under airflow impact, and evenly distributing the force on the filter cartridge to avoid localized damage.

[0042] Filter Cartridge Body 3: Made of materials such as non-woven fabric, metal mesh, or foam, this filter layer has a specific pore size and is used to intercept large particulate pollutants such as dust and hair in the air. Its dimensions are adapted to the filter cartridge compartment. Function: As the core filtration component, it purifies the air through physical interception. Its detachable design facilitates regular replacement or cleaning.

[0043] Based on the above structure, its operating principle is as follows:

[0044] Installation and Closure Process: Initially, the windward frame 1 and the leeward frame 2 are in the open state (at a certain angle) via the hinge structure 4. The filter element body 3 is placed on the second filter element support unit, and then the leeward frame 2 is rotated to close it with the windward frame 1. The front closing snap-fit ​​structure automatically engages, forming a sealed filter element placement compartment. At this time, the second filter element support unit moves with the leeward frame 2, clamping the filter element body 3 together with the first filter element support unit, ensuring the filter element body 3 remains stable during airflow.

[0045] Filtration working principle: When dust-laden air flows in from the windward side frame 1, it first passes through the filter layer of the filter element body 3. Large particulate pollutants are intercepted on the windward side of the filter element body 3, and clean air is discharged from the leeward side frame 2 after passing through the filter element body 3. The filter element clamping mechanism fixes the filter element body 3 without obstructing airflow, ensuring that the airflow passes evenly through the surface of the filter element body 3, thereby improving filtration efficiency.

[0046] Maintenance and disassembly process: When the filter element needs to be replaced or cleaned, simply apply opposite opening forces to the front sides of the windward side frame 1 and the leeward side frame 2 simultaneously to release the front locking state. The two frames will then rotate open under the action of the hinge structure 4, exposing the filter element body 3. Since the filter element body 3 is only subject to the mechanical clamping force of the filter element holding mechanism, it can be directly removed without tools. After replacing the new filter element body 3, repeat the closing operation to restore its use.

[0047] This embodiment achieves quick assembly and stable fixation of the filter body 3 through the cooperation of the hinged-clamp frame and the bidirectional clamping mechanism, which solves the problems of cumbersome maintenance and easy loosening of traditional filters. It is suitable for scenarios such as air conditioning ventilation systems and air purifiers that require frequent filter replacement, and is both practical and economical.

[0048] Example 2

[0049] This embodiment discloses a quick-release pre-filter. As a preferred implementation of this technical solution, the filter element clamping mechanism is improved based on Embodiment 1. A specially arranged support frame achieves a wave-shaped arrangement of the filter element body 3, improving filtration performance and structural stability. The specific technical solution is as follows:

[0050] The first filter element support unit (windward side) includes several parallel and spaced windward side filter element support frames 5, which can be made of rigid plastic or metal into strip structures. Their length direction is perpendicular to the airflow direction, and both ends are fixed to the inner side of the windward side frame 1 by welding, buckles, or bolts. Furthermore, the adjacent windward side filter element support frames 5 are evenly spaced, forming a parallel support array.

[0051] The second filter element support unit (leeward side) includes several leeward-side filter element support frames 6, which are also strip-shaped and fixedly connected to the leeward-side frame 2. The core improvement lies in the staggered arrangement of the leeward-side filter element support frames 6 relative to the windward-side filter element support frames 5. Furthermore, the spacing between the leeward-side filter element support frames 6 and the windward-side filter element support frames 5 is the same, but the initial installation position is offset by half a frame spacing, ensuring that when they are combined, they can support the filter element body 3 in a regular wave shape.

[0052] The filter element body 3 is arranged in a wave-like shape: The filter element body 3 is made of flexible filter material (such as bendable non-woven fabric). When the windward side frame 1 and the leeward side frame 2 are closed, the two sets of misaligned support skeletons force the filter element body 3 to form continuous wave-like folds between adjacent skeletons through compression and limiting action. The height of the folds matches the spacing between the skeletons.

[0053] This technical solution has the following advantages: The wave-shaped structure allows the filter element body 3 to have a larger filtration surface area within the limited placement space, improving dust interception capacity without changing its external dimensions. The staggered support frame forms a flow guide channel, guiding airflow evenly through the surface of the filter element body 3 and avoiding filtration blind spots caused by local high-speed airflow. At the same time, the peak-valley structure of the wave-shaped pleats can disperse the airflow impact force, reduce the pressure drop on the surface of the filter element body 3, and extend the service life of the filter element body 3.

[0054] Example 3

[0055] This embodiment discloses a quick-release pre-filter. As a preferred implementation of this technical solution, based on Embodiment 1 or 2, the second filter element support unit of the filter element clamping mechanism is optimized. By adding a support mesh 7, the plastic stability and structural strength of the filter element body 3 are improved, making it suitable for scenarios where maintaining the shape of the filter element body 3 is more critical. Specifically, the surface of the second filter element support unit is covered with a suitable support mesh 7. The support mesh 7 can be made of malleable metal materials such as stainless steel or aluminum alloy, and processed into a mesh structure. Its external dimensions are fully adapted to the inner side of the leeward side frame 2. The support mesh 7 is fixed to the surface of the leeward side support frame by welding, riveting, or snap-fitting, covering the gap area between the frames to form a continuous support plane.

[0056] Furthermore, the surface of the support mesh 7 is smooth and the edges are rounded to avoid scratching the filter element body 3 material. When the filter element body 3 is installed, its leeward side is directly attached to the surface of the metal support mesh 7. The troughs of the wavy pleats are provided with uniform support by the support mesh 7, while the crests are limited by the windward support frame, forming a stable clamping structure with bidirectional constraints.

[0057] This embodiment solves the problems of easy deformation and uneven support of flexible filter elements by adopting a composite design of "support frame + metal support mesh 7" without significantly increasing costs, and achieves dual optimization of structural strength and filtration performance.

[0058] Example 4

[0059] This embodiment discloses a quick-release pre-filter. As a preferred implementation of this technical solution, based on embodiments 1, 2, or 3, a modular design is adopted for the structure of the windward side frame 1. Through the integrated design of the rectangular hollow frame and edge structure, the structural strength, sealing performance, and filter element installation compatibility of the frame are improved. The specific technical solution is as follows:

[0060] The windward side frame 1 includes a windward side rectangular cutout frame 1.1 for fixing the first filter element support unit. The windward side rectangular cutout frame 1.1 can be made by one-piece injection molding (plastic material) or welding of metal profiles (such as aluminum alloy). The windward side rectangular cutout frame 1.1 has mounting slots / screw holes that match the first filter element support unit, ensuring that the first filter element support unit is fixed to the inside of the cutout frame by means of snaps, bolts or welding.

[0061] The rear side of the windward rectangular hollow frame 1.1 is equipped with the first rear edge structure 1.2 of the hinge structure 4. Specifically, the first hinge shaft mounting seat of the hinge structure 4 is provided, which is connected to the second hinge shaft seat on the rear side of the leeward frame 2 by a pin, hinge, or flexible hinge, realizing the rotatable opening and closing of the two frames. The rotation axis of the hinge structure 4 is parallel to the height direction of the frame, ensuring a smooth and jam-free opening and closing process.

[0062] The front side of the windward rectangular hollow frame 1.1 is the first front edge structure 1.3, which integrates the elastic snap-fit ​​component (such as an L-shaped buckle, spring pin, or magnetic component) of the closed snap-fit ​​structure, and cooperates with the slot / magnetic plate on the front side of the leeward frame 2. The surface of the elastic snap-fit ​​component is provided with anti-slip texture or rubber pad layer, forming a tight mechanical connection when closed, while also assisting the sealing strip to improve airtightness.

[0063] The left and right sides of the rectangular hollow frame 1.1 on the windward side are respectively provided with first windproof side edges 1.4. The first windproof side edge 1.4 is a raised structure perpendicular to the plane of the frame, with a sealing strip mounting groove on the inner side and a rounded outer edge. When the frame is closed, the first windproof side edge 1.4 fits against the corresponding side edge (second windproof side edge 2.4) of the leeward side frame 2, forming a side sealing structure to prevent unfiltered air from leaking from the side of the frame.

[0064] This embodiment achieves modular integration of "support functional area + connection functional area + sealing functional area" through a structurally disassembled design of the windward side frame 1, making it suitable for standardized filter modules. The universal design of the edge structure can be adapted to the installation interfaces of ventilation equipment from different brands, reducing industry replacement costs, and is especially suitable for scenarios such as commercial air conditioning and industrial dust removal systems that require large-scale production and rapid installation.

[0065] Example 5

[0066] This embodiment discloses a quick-release pre-filter. As a preferred implementation of this technical solution, based on embodiments 1, 2, 3, or 4, the structure of the leeward side frame 2 is designed with symmetry and modularity. By mirroring the edge structure with the rectangular hollow frame 2.1 on the leeward side, a coordinated sealing, stable connection, and enhanced filter element support function with the windward side frame 1 are achieved. The specific technical solution is as follows:

[0067] The leeward side frame 2 includes a leeward side rectangular cutout frame 2.1 for fixing the second filter element support unit. The leeward side rectangular cutout frame 2.1 can be made by one-piece injection molding (plastic material) or welding of metal profiles (such as aluminum alloy). The leeward side rectangular cutout frame 2.1 has mounting slots / screw holes that match the second filter element support unit, ensuring that the second filter element support unit is fixed to the inside of the cutout frame by means of snaps, bolts or welding.

[0068] The rear side of the leeward rectangular hollow frame 2.1 is equipped with a second rear edge structure 2.2, which features the hinge structure 4. A second hinge shaft mounting seat, adapted to the first rear edge structure 1.2 on the windward side, is provided, connected to the windward rear edge structure via a pin, hinge, or flexible hinge. The wheelbase of the second hinge shaft mounting seat is completely consistent with that on the windward side, ensuring that the coaxiality error between the two frames is ≤0.2mm during rotation, achieving skew-free opening and closing.

[0069] The front side of the rectangular hollow frame 2.1 on the leeward side is a second front edge structure 2.3 with the aforementioned closed snap-fit ​​structure, integrating a slot / magnetic fitting (such as a U-shaped slot or magnetic iron sheet) that matches the elastic snap-fit ​​component on the windward side. A rubber buffer pad is provided on the inner wall of the slot, forming a friction lock with the anti-slip texture of the snap-fit ​​component on the windward side. The snap-fit ​​force is uniform when closed, and the sealing strip ensures an airtight connection at the front edge.

[0070] The leeward rectangular hollow frame 2.1 has second windproof side edges 2.4 on both the left and right sides. The first windproof side edge 1.4 is a vertical protrusion structure corresponding to the first windproof side edge 1.4, with a sealing strip mounting groove on the outer side and a rounded inner edge. When the frame is closed, the second windproof side edge 2.4 precisely aligns with the groove of the first windproof side edge 1.4 on the windward side, forming a three-dimensional sealing structure of "flange interlocking".

[0071] This embodiment, through the symmetrical and modular design of the leeward side frame 2, forms a "quick-release sealing system" that complements the function of the windward side frame 1. While improving the installation stability and filtration efficiency of the filter element, it also achieves a high degree of versatility of structural components, providing key technical support for large-scale production and standardized installation. It is especially suitable for ventilation and purification equipment that requires high sealing performance and high maintenance efficiency.

[0072] Example 6

[0073] This embodiment discloses a quick-release primary filter. As a preferred implementation of this technical solution, based on embodiments 1, 2, 3, 4, or 5, it specifically optimizes the closed snap-fit ​​structure. Through a male-female snap-fit ​​design driven by elastic deformation, it achieves quick locking and tool-free unlocking of the frame, improving operational convenience and connection reliability. The specific technical solution is as follows: The closed snap-fit ​​structure includes a male snap-fit ​​structure 8 disposed on the windward side frame 1 and a female snap-fit ​​structure 9 disposed on the leeward side frame 2. The male snap-fit ​​structure 8 and the female snap-fit ​​structure 9 achieve locking and unlocking based on elastic deformation. Among them, the male snap-fit ​​structure 8 (windward side frame 1) adopts an elastic cantilever snap-fit ​​design, and the female snap-fit ​​structure 9 (leeward side frame 2) is designed with a U-shaped limiting groove corresponding to the male snap-fit ​​structure 8.

[0074] This embodiment, through the innovative design of flexible male and female buckles, breaks through the bottleneck of traditional snap-fit ​​structures that rely on tools or are prone to loosening, and achieves the quick-release function of "press and lock, press and release". It forms a technical closed loop with the frame system and filter element clamping mechanism of the previous embodiment, which significantly improves the engineering practicality and market competitiveness of the quick-release primary filter.

[0075] Example 7

[0076] This embodiment discloses a quick-release pre-filter, which is a preferred implementation of this technical solution. Based on embodiments 1, 2, 3, 4, 5, or 6, the frame material and manufacturing process are strengthened. The frame structure, formed by welding alloy materials, improves the overall strength, corrosion resistance, and structural stability of the filter, making it suitable for high-load, complex air filtration scenarios. Specifically, both the windward frame 1 and the leeward frame 2 are welded from alloy materials.

[0077] This embodiment solves the reliability problem of traditional quick-release filters in high-intensity and complex environments by deeply integrating alloy material welding technology with the frame structure, achieving a technological progression of "material upgrade - process optimization - performance improvement". The modular design of the welded frame is compatible with the clamping and sealing structures of the entire series of filter elements, providing key support for the product to expand into industrial and high-end scenarios, forming a complete technical solution covering household and industrial applications.

[0078] Example 8

[0079] This embodiment discloses a quick-release pre-filter as a preferred implementation of this technical solution. Based on embodiments 1, 2, 3, 4, 5, 6, or 7, the connection method between the frame and external equipment is optimized. By setting standardized mounting holes 10 on the windward side frame 1 and / or the leeward side frame 2, the filter can be quickly positioned and reliably fixed to the ventilation equipment, improving engineering installation efficiency and scenario adaptability. In other words, this embodiment solves the problems of difficult positioning and poor adaptability of quick-release filters in engineering installation through the integrated design of the standardized mounting holes 10 and the frame structure, achieving a fusion of "quick-release maintenance" and "reliable fixation." The reinforced structure and sealing design of the mounting holes 10 enable them to withstand long-term vibration loads and meet high sealing requirements, becoming a key interface for connecting the filter and ventilation equipment, further improving the all-scenario application solution for quick-release pre-filters.

Claims

1. A quick-release pre-filter, characterized in that: It includes a windward side frame (1), a leeward side frame (2), a filter element body (3), and a filter element clamping mechanism; The rear side of the windward side frame (1) and the rear side of the leeward side frame (2) are rotatably connected by a hinge structure (4), and a closed snap-fit ​​structure is provided on the front side of the windward side frame (1) and the front side of the leeward side frame (2). After the windward side frame (1) and the leeward side frame (2) are closed, a filter element placement chamber is formed between them; the filter element clamping mechanism is located in the filter element placement chamber and includes a first filter element support unit fixedly connected to the windward side frame (1) and a second filter element support unit fixedly connected to the leeward side frame (2); the filter element body (3) is disposed between the first filter element support unit and the second filter element support unit, and the first filter element unit and the second filter element support unit cooperate with each other to clamp and fix the filter element body (3).

2. The quick-release pre-filter as described in claim 1, characterized in that: The first filter element support unit includes several windward filter element support frames (5), all windward filter element support frames (5) are arranged in parallel and at intervals, and are fixedly connected to the windward frame (1) respectively; the second filter element support unit includes several leeward filter element support frames (6), all leeward filter element support frames (6) are arranged at intervals relative to the windward filter element support frames (5), and are fixedly connected to the leeward frame (2) respectively; all windward filter element support frames (5) and all leeward filter element support frames (6) cooperate with each other, so that the filter element body (3) is arranged in a wave shape.

3. The quick-release pre-filter as described in claim 1, characterized in that: The surface of the second filter element support unit is covered with a suitable support mesh (7).

4. The quick-release pre-filter as described in claim 1, characterized in that: The support mesh (7) is made of metal mesh.

5. The quick-release pre-filter as described in claim 1, characterized in that: The windward side frame (1) includes a windward side rectangular hollow frame (1.1) for fixing the first filter element support unit. The rear side of the windward side rectangular hollow frame (1.1) is a first rear edge structure (1.2) for which the hinge structure (4) is provided. The front side of the windward side rectangular hollow frame (1.1) is a first front edge structure (1.3) for which the closed snap-fit ​​structure is provided. The left and right sides of the windward side rectangular hollow frame (1.1) are respectively provided with first windproof side edges (1.4).

6. The quick-release pre-filter as described in claim 1, characterized in that: The leeward side frame (2) includes a double-wind side rectangular hollow frame for fixing the second filter element support unit. The rear side of the leeward side rectangular hollow frame (2.1) is a second rear edge structure (2.2) with the hinge structure (4) provided. The front side of the leeward side rectangular hollow frame (2.1) is a second front edge structure (2.3) with the closed snap-fit ​​structure provided. The left and right sides of the leeward side rectangular hollow frame (2.1) are respectively provided with second windproof side edges (2.4).

7. The quick-release pre-filter as described in claim 1, characterized in that: The closed snap-fit ​​structure includes a male snap-fit ​​structure (8) set on the windward side frame (1) and a female snap-fit ​​structure (9) set on the leeward side frame (2). The male snap-fit ​​structure (8) and the female snap-fit ​​structure (9) lock and unlock based on elastic deformation.

8. The quick-release pre-filter as described in claim 1, characterized in that: Both the windward side frame (1) and the leeward side frame (2) are made of alloy materials and welded together.

9. A quick-release pre-filter as described in claim 1, characterized in that: Mounting holes (10) are provided on the windward side frame (1) and / or the leeward side frame (2).

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