A filter cotton replaceable primary filter

Abstract

The utility model discloses a primary filter of filter cotton is replaceable relates to filter technical field, including metal frame and the filter cotton of setting in metal frame, the recess is all seted up to upper frame and lower frame both ends, and the through slot is all seted up to left frame and right frame both sides, the baffle side end of pressure assembly is seted up in recess, and the guide rod is fixed with the baffle one side, and the one end of guide rod is away from baffle and is inserted into the through slot, and the spring is seted up outside guide rod, and one end of spring is fixedly connected with baffle, and the other end is fixedly connected with upper frame or lower frame, and one end of baffle is abutted with upper frame, and the other end is abutted with lower frame, and the one side of left frame and right frame is close to baffle and is provided with the protruding, and the side of filter cotton is seted up between protruding and baffle, the utility model discloses the quick dismounting of filter cotton and frame is realized, and the replacement, cleaning and reuse of filter cotton are convenient, and the use cost is reduced, and the waste production is reduced.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, and in particular to a pre-filter with replaceable filter cotton. Background Technology

[0002] Pre-filters, as pre-filters in air purification systems, are mainly used to intercept large particles of dust, hair, fibers and other impurities in the air, protecting downstream medium-efficiency and high-efficiency filters and related equipment from wear and clogging. They are widely used in ventilation and air conditioning systems in factories, office buildings, hospitals, laboratories and other places. Existing pre-filters have a structure consisting of a four-sided metal frame with a flip-up and flip-down mechanism. The assembly process involves folded mesh filter cotton, which is then assembled inside the metal frame. The top and bottom edges are used to fix the filter cotton, and adhesive is used to firmly bond the inner side of the metal frame to the side of the filter cotton. Since the lifespan of a pre-filter is generally only three months, the entire pre-filter needs to be replaced when it is replaced. The filter cotton cannot be replaced separately, and the entire filter must be discarded. This not only wastes filter cotton material and increases operating costs, but also generates a large amount of solid waste, which is detrimental to the environment. Therefore, there is an urgent need for a pre-filter with replaceable filter cotton that allows for quick assembly and disassembly of the filter cotton and frame, in order to solve the above-mentioned technical problems. Utility Model Content

[0003] The purpose of this invention is to provide a pre-filter with replaceable filter cotton, enabling quick assembly and disassembly of the filter cotton and frame, facilitating the replacement, cleaning, and reuse of the filter cotton, reducing usage costs, and minimizing waste generation, thereby solving the aforementioned problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A pre-filter with replaceable filter cotton includes a metal frame and filter cotton disposed within the metal frame. A metal frame, comprising an upper frame, a lower frame, a left frame, and a right frame, wherein the upper frame, the lower frame, the left frame, and the right frame are integrally connected end to end to form the metal frame; The upper and lower borders are provided with grooves at both ends on the side near the left and right borders, and the left and right borders are provided with through slots on both sides, with the grooves communicating with the through slots; A clamping assembly includes a baffle, a spring, and a guide rod. The side of the baffle is disposed in a groove, and a guide rod is fixed to one side of the baffle. The end of the guide rod away from the baffle extends into the through groove. A spring is sleeved on the outside of the guide rod. One end of the spring is fixedly connected to the baffle, and the other end is fixedly connected to the upper or lower frame. One end of the baffle abuts against the upper frame, and the other end abuts against the lower frame. The left and right frames have protrusions on the side near the baffle, and the side of the filter cotton is disposed between the protrusions and the baffle. The fastening assembly includes a first locking block, a second locking block, and a locking member. The first locking block is provided on both sides of the upper and lower frame near the baffle, and the second locking block is provided on both sides of the baffle. The locking member is locked to the first locking block and the second locking block on both sides respectively, and a limit block is integrally connected to the side of the locking member near the first locking block.

[0005] Furthermore, it also includes a support assembly, which comprises two cross-arranged support strips, the four ends of which are respectively fixed at the four corners of the metal frame.

[0006] Furthermore, the top frame, bottom frame, left frame, and right frame are all made of galvanized material.

[0007] Furthermore, the filter cotton is a folded multi-layered filter cotton.

[0008] Furthermore, the snap-fit ​​component is L-shaped, and the cross-section of the limiting block is square, triangular, or semi-circular.

[0009] This utility model discloses the following technical effects: This utility model discloses a pre-filter with replaceable filter cotton. First, the side of the filter cotton is placed between the baffle and the protrusion. By setting a snap-fit ​​device, the guide rod on the baffle slides along the through groove. The spring presses the baffle close to the protrusion on the left or right frame, forming a tight pressing structure. When it is necessary to disassemble and replace, the snap-fit ​​device is removed, the spring returns, the baffle returns to the initial position, and the filter cotton can be taken out. This realizes quick disassembly of the filter cotton, facilitates cleaning and reuse of the filter cotton, reduces the cost of use, and reduces waste generation. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1This utility model discloses a structural schematic diagram of a pre-filter with replaceable filter cotton. Figure 2 This utility model discloses a pre-filter with replaceable filter cotton, which has a front view without filter cotton. Figure 3 This utility model Figure 1 Enlarged view of point A in the middle; Figure 4 This utility model Figure 2 Enlarged schematic diagram of the structure at point B; Figure 5 : Schematic diagram of the filter cotton structure of this utility model; Figure 6 : Schematic diagram of the snap-fit ​​component structure of this utility model.

[0012] Specifically, 1. Top frame; 2. Bottom frame; 3. Left frame; 4. Right frame; 5. Groove; 6. Through groove; 7. Baffle; 8. Spring; 9. Guide rod; 10. Protrusion; 11. First locking block; 12. Second locking block; 13. Snap-fit ​​piece; 14. Limiting block; 15. Supporting flat strip; 16. Filter cotton. Detailed Implementation

[0013] 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.

[0014] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] The specific implementation method is as follows: like Figures 1-6 As shown; this utility model discloses a pre-filter with replaceable filter cotton, including a metal frame and filter cotton 16 disposed within the metal frame; The metal frame includes an upper frame 1, a lower frame 2, a left frame 3, and a right frame 4. The upper frame 1, lower frame 2, left frame 3, and right frame 4 are connected end to end to form the metal frame. The top frame 1 and the bottom frame 2 are provided with grooves 5 at both ends on the side near the left frame 3 and the right frame 4, and the left frame 3 and the right frame 4 are provided with through slots 6 on both sides, with the grooves 5 and the through slots 6 communicating with each other. The clamping assembly includes a baffle 7, a spring 8, and a guide rod 9. The side of the baffle 7 is set in the groove 5. The guide rod 9 is fixed on one side of the baffle 7. The end of the guide rod 9 away from the baffle 7 extends into the through groove 6. The spring 8 is sleeved on the outside of the guide rod 9. One end of the spring 8 is fixedly connected to the baffle 7, and the other end is fixedly connected to the upper frame 1 or the lower frame 2. One end of the baffle 7 abuts against the upper frame 1, and the other end abuts against the lower frame 2. The left frame 3 and the right frame 4 are provided with a protrusion 10 on the side near the baffle 7. The side of the filter cotton 16 is set between the protrusion 10 and the baffle 7. The fastening assembly includes a first locking block 11, a second locking block 12, and a locking member 13. The first locking block 11 is provided on both sides of the upper frame 1 and the lower frame 2 near the baffle 7. The second locking block 12 is provided on both sides of the baffle 7. The locking member 13 is locked to the first locking block 11 and the second locking block 12 on both sides respectively. The side of the locking member 13 near the first locking block 11 is integrally connected to the limiting block 14.

[0016] In this embodiment, the first card block 11 has a first card slot, and a first limiting protrusion 10 fixedly connected to the first card block 11 is provided at the edge of the first card slot; the second card block 12 has a second card slot, and a second limiting protrusion 10 fixedly connected to the second card block 12 is provided at the edge of the second card slot.

[0017] This utility model first engages the snap-fit ​​component 13 into the second snap-fit ​​block 12, and then pushes the baffle 7 to engage the side of the snap-fit ​​component 13 with the limiting block 14 into the first snap-fit ​​block 11. The limiting block 14 abuts against the side of the first snap-fit ​​block 11 near the baffle 7, thereby realizing the movement and fixation of the baffle 7, so that the baffle 7 and the protrusion 10 press and fix the side of the filter cotton 16.

[0018] In this embodiment, a support component is also included, which includes two cross-arranged support strips 15, with the four ends of the two support strips 15 respectively fixed at the four corners of the metal frame.

[0019] The cross-shaped support strips 15 of this utility model are fixed at the four corners of the frame to form an X-shaped reinforcement structure, thereby providing overall support and preventing deformation of the metal frame.

[0020] In this embodiment, the top frame 1, bottom frame 2, left frame 3, and right frame 4 are all made of galvanized material.

[0021] The use of galvanized material in this invention increases the corrosion resistance of the metal frame and provides high strength.

[0022] In this embodiment, the filter cotton 16 is a folded multi-layered filter cotton.

[0023] In this embodiment, the snap-fit ​​component 13 is L-shaped, and the cross-section of the limiting block 14 is square, triangular, or semi-circular.

[0024] The working process of this utility model of a replaceable filter cotton pre-filter is as follows: Taking the left frame 3 in the figure as an example, initially, the spring 8 is in a naturally extended state, the snap-fit ​​13 is fixedly connected to the second snap-fit ​​block 12, and there is a gap between the baffle 7 and the protrusion 10. During installation, the side of the filter cotton 16 is aligned with the gap and inserted. The baffle 7 is manually pushed, causing the guide rod 9 to slide along the through groove 6, which in turn compresses the spring 8, reducing the gap until the baffle 7 and the protrusion 10 press and fix the side of the filter cotton 16. At this point, the side of the snap-fit ​​component 13 with the limiting block 14 is snapped into the first snap-fit ​​block 11. The limiting block 14 of the snap-fit ​​component 13 abuts against the side of the first snap-fit ​​block 11 near the baffle 7 to achieve limiting, fixing the baffle 7 in position and preventing the baffle 7 from moving, so that the filter cotton 16 is always in a compressed state. Similarly, the other side of the right frame 4 is pressed tightly. When disassembly is required, the snap-fit ​​component 13 is removed from the first snap-fit ​​block 11, the spring 8 rebounds and extends, the baffle 7 moves, and the filter cotton 16 can be removed.

[0025] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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.

[0027] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A pre-filter with replaceable filter cotton, characterized in that, Includes a metal frame and filter cotton (16) disposed within the metal frame; The metal frame includes an upper frame (1), a lower frame (2), a left frame (3), and a right frame (4), which are connected end to end to form the metal frame. The upper frame (1) and lower frame (2) are provided with grooves (5) at both ends on the side near the left frame (3) and right frame (4), and through slots (6) are provided on both sides of the left frame (3) and right frame (4). The grooves (5) are connected to the through slots (6). The clamping assembly includes a baffle (7), a spring (8), and a guide rod (9). The side of the baffle (7) is set in a groove (5). A guide rod (9) is fixed on one side of the baffle (7). The end of the guide rod (9) away from the baffle (7) extends into the through groove (6). A spring (8) is sleeved on the outside of the guide rod (9). One end of the spring (8) is fixedly connected to the baffle (7), and the other end is fixedly connected to the upper frame (1) or the lower frame (2). One end of the baffle (7) abuts against the upper frame (1), and the other end abuts against the lower frame (2). The left frame (3) and the right frame (4) are provided with a protrusion (10) on the side near the baffle (7). The side of the filter cotton (16) is set between the protrusion (10) and the baffle (7). The fastening assembly includes a first locking block (11), a second locking block (12), and a locking member (13). The first locking block (11) is provided on both sides of the upper frame (1) and the lower frame (2) near the baffle (7). The second locking block (12) is provided on both sides of the baffle (7). The locking member (13) is locked to the first locking block (11) and the second locking block (12) on both sides respectively. The locking member (13) is integrally connected to a limit block (14) on the side near the first locking block (11).

2. The pre-filter with replaceable filter cotton according to claim 1, characterized in that, It also includes a support assembly, which includes two cross-arranged support strips (15), the four ends of which are fixed at the four corners of the metal frame.

3. A pre-filter with replaceable filter cotton according to claim 1, characterized in that, The top frame (1), bottom frame (2), left frame (3) and right frame (4) are all made of galvanized material.

4. A pre-filter with replaceable filter cotton according to claim 1, characterized in that, The filter cotton (16) is a folded multi-layered filter cotton.

5. A pre-filter with replaceable filter cotton according to claim 1, characterized in that, The snap-fit ​​component (13) is L-shaped, and the cross-section of the limiting block (14) is square, triangular, or semi-circular.

Images