Flat plate type primary air filter

Abstract

The utility model discloses a flat plate type primary air filter which comprises a C-shaped frame a and a C-shaped frame b which are oppositely arranged, and wave-shaped filter cotton is assembled between the C-shaped frame a and the C-shaped frame b. Adjusting plates are assembled at the upper end and the lower end between the C-shaped frame a and the C-shaped frame b, adjusting openings are formed in the opposite ends of the C-shaped frame a and the C-shaped frame b, one ends of the adjusting plates are inserted into the adjusting openings in the C-shaped frame a, and the other ends of the adjusting plates are inserted into the adjusting openings in the C-shaped frame b; according to the flat plate type primary air filter, the two ends of the wave-shaped filter cotton are both provided with mounting plates, mounting cavities are formed in the C-shaped frame a and the C-shaped frame b, the mounting plates are attached to the inner walls of the mounting cavities, and the two ends of the wave-shaped filter cotton and the mounting cavities are fixed through clamping mechanisms, so that the operation of bolt connection is avoided; the wave-shaped filter cotton is convenient to disassemble, assemble and replace, and the practicability is improved.

Description

Technical Field

[0001] This utility model relates to the field of air filter technology, specifically a flat-plate primary air filter. Background Technology

[0002] Air filters are widely used in the air conditioning terminal supply points of cleanrooms in industries such as optoelectronics, LCD manufacturing, biopharmaceuticals, precision instruments, beverage and food, and PCB printing. Both high-efficiency (HEPA) and ultra-high-efficiency (UHEPA) filters are used at the cleanroom terminal, and can be categorized by their structural form as follows: HEPA with separators, HEPA without separators, high-volume HEPA, and UHEPA filters, etc.

[0003] However, the prior art patent number CN202220259308.8 discloses a flat-plate primary air filter, which includes two n-shaped sleeves. Two symmetrically arranged c-shaped frames are slidably connected inside the two n-shaped sleeves. A plastic film is fixed to the inner wall of each n-shaped sleeve. The opposite sides of the two plastic films are movably fitted to the inner wall of the corresponding c-shaped frame. Multiple studs are fixed on the inner wall of the opposite side of each of the two c-shaped frames. The same mounting plate is movably sleeved on the outer side of the multiple studs on the same side. A hand-tightening nut is also screwed to the outer side of the same stud.

[0004] The aforementioned patent also has some shortcomings. For example, the use of corrugated filter cotton installed in two C-shaped frames makes the length of the filter adjustable to accommodate different devices. However, the bolt-mounted installation makes it inconvenient to disassemble and replace the filter cotton later, affecting the use of the filter. Therefore, the existing technology needs to be improved. Utility Model Content

[0005] The purpose of this utility model is to provide a flat-plate primary air filter to solve some shortcomings of the aforementioned patents mentioned in the background art. For example, the filter length is adjustable by installing corrugated filter cotton into two C-shaped frames to meet the installation requirements of different devices. However, the installation by bolts makes it inconvenient to disassemble and replace the filter cotton later, which affects the use of the filter.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a flat-plate primary air filter, comprising a C-shaped frame a and a C-shaped frame b arranged opposite to each other, wherein a corrugated filter cotton is assembled between the C-shaped frame a and the C-shaped frame b;

[0007] Adjustment plates are installed at both the top and bottom ends of the C-shaped frame a and C-shaped frame b. Adjustment ports are opened at the opposite ends of the C-shaped frame a and C-shaped frame b. One end of the adjustment plate is inserted into the adjustment port in the C-shaped frame a, and the other end of the adjustment plate is inserted into the adjustment port in the C-shaped frame b.

[0008] The corrugated filter cotton is equipped with mounting plates at both ends, and the C-shaped frame a and C-shaped frame b have mounting cavities inside, with the mounting plates fitting snugly against the inner wall of the mounting cavities;

[0009] The mounting plate and the mounting cavity are engaged by a snap-fit ​​mechanism, which includes a snap-fit ​​block installed on the side wall of the mounting plate and a snap-fit ​​groove opened inside the mounting cavity, with the snap-fit ​​block engaging in the snap-fit ​​groove.

[0010] As a preferred embodiment of the flat-plate primary air filter of this utility model, the outer walls on both sides of the card block are provided with inclined convex surfaces, and the inner walls on both sides of the card slot are provided with inclined concave surfaces.

[0011] As a preferred embodiment of the present invention, the card block has a filling cavity inside, and an elastic element is installed inside the filling cavity.

[0012] As a preferred embodiment of the flat-plate primary air filter of this utility model, the end of the card block is provided with an arc surface.

[0013] As a preferred embodiment of the present invention, the front sidewalls of the C-shaped frame a and C-shaped frame b are provided with positioning openings evenly spaced from left to right, and the sidewall of the adjusting plate is equipped with a positioning component at the adjusting opening, the positioning component cooperating with the positioning opening.

[0014] In a preferred embodiment of this utility model, the positioning assembly includes a fixed plate installed on the side wall of the adjusting plate, a telescopic rod installed on the side of the fixed plate, a universal seat installed at the end of the telescopic rod, a universal ball installed inside the universal seat, the universal ball being engaged in the positioning port, and a spring fitted on the outside of the telescopic rod between the fixed plate and the universal seat.

[0015] As a preferred embodiment of the present invention, the inner wall of the universal seat is provided with rotating cavities evenly spaced along its axis, and ball bearings are installed inside the rotating cavities.

[0016] As a preferred embodiment of the flat-plate primary air filter of this utility model, mounting ears are installed on both outer walls of the C-shaped frame a and C-shaped frame b.

[0017] Compared with the prior art, the beneficial effects of this utility model are: the design of this flat-plate primary air filter is reasonable.

[0018] This design incorporates two C-shaped frames with adjustable supports, and corrugated filter cotton is fixed inside both frames. This allows for adjustment of the overall length and use with different equipment. The corrugated filter cotton is secured to the mounting cavity via a snap-fit ​​mechanism, eliminating the need for bolt connections and facilitating the disassembly and replacement of the corrugated filter cotton, thus improving its practicality. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of part A of the present utility model;

[0021] Figure 3 This is a schematic diagram of the snap-fit ​​mechanism of this utility model;

[0022] Figure 4 This is a schematic diagram of the positioning mechanism of this utility model.

[0023] In the diagram: 1. C-shaped frame a; 2. C-shaped frame b; 3. Adjusting plate; 4. Corrugated filter cotton; 5. Mounting ear plate; 6. Mounting plate; 7. Adjusting port; 8. Positioning component; 9. Locking block; 10. Locking groove; 11. Filling cavity; 12. Arc surface; 13. Elastic element; 14. Sloping convex surface; 15. Sloping concave surface; 16. Mounting cavity. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-4 This utility model provides a technical solution:

[0026] In this technical solution, a flat-plate primary air filter includes C-shaped frames a1 and b2 arranged opposite to each other. A corrugated filter cotton 4 is assembled between the C-shaped frames a1 and b2. Adjustment plates 3 are assembled at both the upper and lower ends of the C-shaped frames a1 and b2. Adjustment ports 7 are opened at the opposite ends of the C-shaped frames a1 and b2. One end of the adjustment plate 3 is inserted into the adjustment port 7 in the C-shaped frame a1, and the other end of the adjustment plate 3 is inserted into the adjustment port 7 in the C-shaped frame b2. Mounting plates 6 are installed at both ends of the corrugated filter cotton 4. Mounting cavities 16 are opened inside the C-shaped frames a1 and b2. The mounting plates 6 are fitted against the inner wall of the mounting cavities 16. The mounting plates 6 and the mounting cavities 16 are engaged by a snap-fit ​​mechanism. The snap-fit ​​mechanism includes a snap-fit ​​block 9 installed on the side wall of the mounting plate 6 and a snap-fit ​​groove 10 opened inside the mounting cavity 16. The snap-fit ​​block 9 is engaged in the snap-fit ​​groove 10.

[0027] In this technical solution, C-shaped frames a1 and b2 have the same structure and are arranged opposite to each other. C-shaped frames a1 and b2 are fitted onto the outer sides of the adjusting plate 3, and with the adjusting plate 3 as the center, C-shaped frames a1 and b2 can be moved left and right to adjust the overall length. The corrugated filter cotton 4 can be unfolded accordingly. The mounting plates 6 installed on the left and right sides of the corrugated filter cotton 4 can be installed on the inner walls of the mounting cavity 16 on both sides through a snap-fit ​​mechanism. The snap-fit ​​mechanism includes snap-fit ​​blocks 9 installed at the upper and lower ends of the side walls of the mounting plate 6 and snap-fit ​​grooves 10 opened at the upper and lower ends of the inner walls of the mounting cavity 16. The snap-fit ​​blocks 9 are snapped into the snap-fit ​​grooves 10 to fix the mounting plate 6.

[0028] In some technical solutions, the outer walls on both sides of the card block 9 are provided with inclined convex surfaces 14, and the inner walls on both sides of the card slot 10 are provided with inclined concave surfaces 15.

[0029] In this technical solution, through the cooperation of the inclined convex surface 14 and the inclined concave surface 15, and the elasticity of the locking block 9, the locking block 9 can be inserted into the locking slot 10, and under force, the locking block 9 can be pulled out of the locking slot 10.

[0030] In some technical solutions, the card block 9 has a filling cavity 11 inside, and an elastic element 13 is installed inside the filling cavity 11.

[0031] In this technical solution, the elasticity of the card block 9 can be improved by the elastic element 13.

[0032] In some technical solutions, the end of the card block 9 is provided with an arc surface 12.

[0033] In this technical solution, the arc surface 12 facilitates the insertion of the card block 9 into the card slot 10.

[0034] In some technical solutions, the front sidewalls of C-shaped frame a1 and C-shaped frame b2 are provided with positioning openings 17 evenly spaced from left to right, and the sidewall of the adjusting plate 3 is equipped with a positioning component 8 at the adjusting opening 7, and the positioning component 8 and the positioning opening 17 cooperate with each other.

[0035] In this technical solution, when C-shaped frames a1 and b2 move on the left and right sides of the adjustment plate 3, the positioning component 8 on the adjustment plate 3 is inserted into the positioning port 17 at different positions to make the positions of C-shaped frames a1 and b2 correspond on the adjustment plate 3.

[0036] In some technical solutions, the positioning component 8 includes a fixed plate 82 installed on the side wall of the adjusting plate 3, a telescopic rod 81 installed on the side of the fixed plate 82, a universal seat 84 installed at the end of the telescopic rod 81, a universal ball 85 installed inside the universal seat 84, the universal ball 85 being snapped into the positioning port 17, and a spring 83 being fitted on the outside of the telescopic rod 81 between the fixed plate 82 and the universal seat 84.

[0037] In this technical solution, the fixing plate 82 in the positioning assembly 8 is fixed on the side wall of the adjusting plate 3, the telescopic rod 81 is vertically installed on the adjusting plate 3, the universal seat 84 is installed at the end of the telescopic rod 81, and the universal ball 85 can roll in the universal seat 84 and be inserted into the positioning port 17. It can be inserted and removed by the extension and retraction of the telescopic rod 81 and the spring 83.

[0038] In some technical solutions, the inner wall of the universal joint 84 is provided with rotating cavities 86 evenly spaced along its axis, and ball bearings 87 are installed inside the rotating cavities 86.

[0039] In this technical solution, the ball bearing 87 can conform to the universal ball 85 and roll within the rotating cavity 86.

[0040] In some technical solutions, mounting ears 5 are installed on both outer walls of C-shaped frame a1 and C-shaped frame b2.

[0041] In this technical solution, C-shaped frame a1 and C-shaped frame b2 can be installed via ear plate 5.

[0042] Working process and principle: When using, first, install the mounting plate 6 in the corrugated filter cotton 4 into the mounting cavity 16 through the snap-fit ​​mechanism. Then, adjust the position of the C-shaped frame a1 and C-shaped frame b2 according to the usage. The C-shaped frame a1 and C-shaped frame b2 can be moved to both sides. The positioning component 8 is snapped into the positioning port 17 at the corresponding position for limiting. At this time, the corrugated filter cotton 4 unfolds and can be installed and used.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A flat panel type primary air filter comprising a C-shaped frame a (1) and a C-shaped frame b (2) disposed opposite to each other, characterized in that, Wavy filter cotton (4) is arranged between the C-shaped frame a (1) and the C-shaped frame b (2). Adjusting plates (3) are arranged at the upper and lower ends between the C-shaped frame a (1) and the C-shaped frame b (2), adjusting ports (7) are arranged at opposite ends of the C-shaped frame a (1) and the C-shaped frame b (2), one end of the adjusting plate (3) is inserted into the adjusting port (7) in the C-shaped frame a (1), and the other end of the adjusting plate (3) is inserted into the adjusting port (7) in the C-shaped frame b (2). Mounting plates (6) are arranged at the two ends of the wavy filter cotton (4), and mounting cavities (16) are arranged in the C-shaped frame a (1) and the C-shaped frame b (2). The mounting plate (6) and the mounting cavity (16) are clamped through a clamping mechanism, the clamping mechanism comprises a clamping block (9) arranged on the side wall of the mounting plate (6) and a clamping groove (10) arranged in the mounting cavity (16), and the clamping block (9) is clamped in the clamping groove (10).

2. A flat panel prefilter according to claim 1 wherein, Oblique convex surfaces (14) are arranged on the two side walls of the clamping block (9), and oblique concave surfaces (15) are arranged on the two inner walls of the clamping groove (10).

3. A flat panel prefilter according to claim 2 wherein, A filling cavity (11) is arranged in the clamping block (9), and an elastic element (13) is arranged in the filling cavity (11).

4. A flat panel prefilter according to claim 1 wherein, An arc surface (12) is arranged at the end of the clamping block (9).

5. A flat panel prefilter according to claim 1 wherein, Positioning ports (17) are arranged on the front side walls of the C-shaped frame a (1) and the C-shaped frame b (2) from left to right, positioning assemblies (8) are arranged on the side wall of the adjusting plate (3) at the adjusting ports (7), and the positioning assembly (8) is matched with the positioning port (17).

6. A flat panel prefilter according to claim 5 wherein, The positioning assembly (8) comprises a fixing plate (82) arranged on the side wall of the adjusting plate (3), a telescopic rod (81) arranged on the side of the fixing plate (82), a universal seat (84) arranged at the end of the telescopic rod (81), a universal ball (85) arranged in the universal seat (84), the universal ball (85) being clamped in the positioning port (17), and a spring (83) sleeved between the fixing plate (82) and the universal seat (84) on the outside of the telescopic rod (81).

7. A flat panel prefilter according to claim 6 wherein, Uniform and equidistant rotating cavities (86) are arranged in the inner wall of the universal seat (84) along the axis, and a ball (87) is arranged in the rotating cavity (86).

8. A flat panel prefilter according to claim 1 wherein, Mounting lug plates (5) are arranged on the two side walls of the C-shaped frame a (1) and the C-shaped frame b (2).

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