A high efficiency filtration device

Abstract

The utility model discloses a kind of high-efficiency filtering devices, including the frame of cuboid shape, frame hollow and upper and lower are provided with opening, each opening is fixed with filter screen, frame is also provided with filter sponge, filter sponge is provided with non-woven fabric between each filter screen, filter sponge is first extended from left to right from the non-woven fabric below to right upper side, extends to the non-woven fabric above, then extends to right lower side again, extends to the non-woven fabric below, and then re-extend to right upper side reciprocatingly to form several interval arranged wave crest and wave trough, wave crest and wave trough are used to increase the surface area of filter sponge.

Description

Technical Field

[0001] This utility model relates to a high-efficiency filtration device. Background Technology

[0002] In the field of air purification, chemical filtration devices are a crucial sub-product, their core function being the adsorption and removal of harmful gases from the air. Existing filtration devices mostly employ single-layer or multi-layer filter media combinations. Common filter media include filter screens, non-woven fabrics, and filter sponges. Among these, multi-layer structures are widely used because they enable graded treatment from pre-filtration to fine filtration to deep filtration.

[0003] These multi-layer filtration devices are designed with high single-pass filtration efficiency and low air resistance in mind. However, current multi-layer filtration designs struggle to resolve the conflict between single-pass filtration efficiency and filtration resistance. When high single-pass filtration efficiency is required, it is often achieved by increasing the thickness or density of the filter sponge. However, increasing the thickness or density also increases filtration resistance, leading to higher energy consumption. This is particularly true for projects retrofitting existing ventilation systems, which are highly sensitive to increased resistance. Increased filtration resistance in the filtration device can even cause the entire ventilation system to malfunction.

[0004] Therefore, how to overcome the aforementioned defects and reduce the increased resistance while improving the efficiency of single-pass filtration has become an important issue that needs to be addressed by those skilled in the art. Utility Model Content

[0005] This invention overcomes the shortcomings of the above-mentioned technologies and provides a high-efficiency filtration device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A high-efficiency filtration device includes a rectangular frame 1, which is hollow and has openings 11 at both the top and bottom. A filter screen 2 is fixed at each opening 11. A filter sponge 3 is also provided inside the frame 1. A non-woven fabric 4 is provided between the filter sponge 3 and each filter screen 2. The filter sponge 3 extends from the lower non-woven fabric 4 to the upper right, then to the upper non-woven fabric 4, then to the lower right, then to the lower non-woven fabric 4, and then to the upper right again, repeating this process to form several spaced crests 31 and troughs 32. The crests 31 and troughs 32 are used to increase the surface area of ​​the filter sponge 3.

[0007] Preferably, the filter sponge 3 is coated with a catalyst for promoting ozone decomposition.

[0008] Preferably, activated carbon is attached to the filter sponge 3.

[0009] Preferably, the filter sponge 3 is initially a rectangular block sponge, the left and right width of the block sponge is smaller than the left and right width of the frame 1, the upper surface of the block sponge is provided with a plurality of downwardly extending left and right distributed first separation seams 33, the lower surface of the block sponge is provided with a plurality of upwardly extending left and right distributed second separation seams 34, the first separation seams 33 and the second separation seams 34 are spaced apart, the left and right ends of the block sponge are respectively fixed to the left and right ends inside the frame 1 so as to unfold each separation seam and form the filter sponge 3, the first separation seam 33 is used to unfold to form the trough part 32, and the second separation seam 34 is used to unfold to form the crest part 31.

[0010] Preferably, the left and right width of the block sponge is 80% to 98% of the left and right width of the frame 1, the depth of the first separation seam 33 is 60% to 80% of the thickness of the block sponge, and the depth of the second separation seam 34 is 60% to 80% of the thickness of the block sponge.

[0011] Optionally, fixing baffles 6 are attached to both the front and rear sides of the filter sponge 3. The fixing baffles 6 are used to maintain the shape of the filter sponge 3 to prevent the crest part 31 from collapsing downwards and to seal the front and rear sides of the filter sponge 3 to prevent air leakage.

[0012] Optionally, the frame 1 is further provided with a support frame 5, which is used to support the area below each crest 31 to prevent the crest 31 from collapsing downwards.

[0013] Preferably, the support frame 5 includes a rectangular base frame 51 placed on the lower non-woven fabric 4, and a plurality of gantry frames 52 distributed left and right are erected between the front and rear sides of the base frame 51. The position and number of the gantry frames 52 are paired with the crest portion 31 and abut against the bottom of the crest portion 31 as support.

[0014] Compared with the prior art, the beneficial effects of this utility model are: This filtration device improves single-pass filtration efficiency by designing the filter sponge to form a series of wavy peaks and troughs, while simultaneously reducing air resistance at the same sponge thickness, thus avoiding increasing air resistance while improving single-pass filtration efficiency. Furthermore, the combination of an outer-to-inner filter screen and non-woven fabric creates a tiered filtration structure, effectively ensuring the overall filtration performance of the device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the filtration device in this case.

[0016] Figure 2 This is one of the cross-sectional schematic diagrams of the filtration device in this case.

[0017] Figure 3This is one of the exploded schematic diagrams of the filtration device in this case, which includes a fixed baffle.

[0018] Figure 4 This is a schematic diagram of the filter sponge in the case of this project in its unexpanded state.

[0019] Figure 5 This is the second cross-sectional schematic diagram of the filtration device in this case, which includes the support frame.

[0020] Figure 6 This is the second exploded schematic diagram of the filtration device in this case, which includes the support frame. Detailed Implementation

[0021] The following examples provide a more detailed description of the features and other related characteristics of this utility model, to facilitate understanding by those skilled in the art: like Figures 1 to 3 As shown, a high-efficiency filtration device includes a rectangular frame 1. The frame 1 is hollow and has openings 11 at both the top and bottom. A filter screen 2 is fixed at each opening 11. A filter sponge 3 is also provided inside the frame 1. Non-woven fabric 4 is provided between the filter sponge 3 and each filter screen 2. The filter sponge 3 extends from the lower non-woven fabric 4 to the upper right, then to the upper non-woven fabric 4, then to the lower right, then to the lower non-woven fabric 4, and then to the upper right again, repeating this process to form several spaced crests 31 and troughs 32. The crests 31 and troughs 32 are used to increase the surface area of ​​the filter sponge 3.

[0022] The filtration device of this invention includes a frame 1, a filter screen 2, a filter sponge 3, and a non-woven fabric 4. The filter sponge 3 is positioned in the center of the frame 1, the filter screen 2 is positioned at the upper and lower openings 11 of the frame 1, and the non-woven fabric 4 is positioned between the filter screen 2 and the filter sponge 3. That is, the filter sponge 3, non-woven fabric 4, and filter screen 2 are arranged sequentially from the center towards the openings within the frame 1, forming a multi-layered filter medium. Air enters the frame 1 through one opening 11 and exits through another opening 11, thus completing the filtration process. Simultaneously, the filter sponge 3 extends vertically from left to right, forming several crests 31 and troughs 32. By setting the crests 31 and troughs 32, the surface area of ​​the filter sponge 3 is much larger than the area of ​​the openings 11, thereby greatly increasing the specific surface area of ​​the filter sponge 3. This effectively improves the single-pass filtration efficiency while maintaining the same sponge density. Furthermore, with the same sponge thickness, the crests 31 and troughs 32 effectively reduce the resistance of air passing through the filter sponge 3.

[0023] As described above, the filter device of this invention effectively improves the single-pass filtration efficiency by designing the filter sponge 3 to extend back and forth to form several crests 31 and troughs 32. At the same time, it can effectively reduce the air resistance when passing through while maintaining the same sponge thickness, thus avoiding increasing air resistance while improving the single-pass filtration efficiency. Furthermore, the combination of the filter screen 2 and non-woven fabric 4, arranged from the outside in, forms a graded filtration structure, effectively ensuring the overall filtration effect of the filter device.

[0024] Specifically, the cross-section of the filter sponge 3 is wavy, sawtooth, or other shapes that can form several crests 31 and troughs 32.

[0025] To verify the aforementioned structural advantages, this utility model underwent targeted experiments. The experimental conditions and results are as follows: The experiment used a frame 1 with dimensions of 730*525*100mm and a filter sponge 3 with dimensions of 600*522*92mm when not unfolded. The wind speed was set to 0.5m / s. The wind resistance and single-pass filtration efficiency were tested under different sponge void densities and different crest / trough numbers. The specific data are as follows: mm mm m^3 PPI PC m / s Pa % 730*525*100 600*522*92 0.029 40 20 0.5 12 99 730*525*100 600*522*92 0.029 40 18 0.5 14 97 730*525*100 600*522*92 0.029 40 16 0.5 18 96 730*525*100 600*522*92 0.029 40 14 0.5 24 92 730*525*100 600*522*92 0.029 25 20 0.5 7 92 730*525*100 600*522*92 0.029 25 18 0.5 12 84 730*525*100 600*522*92 0.029 25 16 0.5 15 79 730*525*100 600*522*92 0.029 25 14 0.5 19 74 The above experimental data fully demonstrates that, under the same sponge porosity and wind speed, the more crests / troughs there are, i.e., the larger the surface area of ​​the filter sponge, the higher the one-time filtration efficiency and the lower the wind resistance. This fully confirms the core advantage of this utility model in achieving both high-efficiency filtration and low wind resistance through the structural design of the crest section 31 and the trough section 32. Even when the sponge porosity is low, as the number of crests / troughs increases, a relatively better balance between efficiency and wind resistance can still be maintained, further demonstrating the universality and effectiveness of this structural design.

[0026] Preferably, the filter sponge 3 is coated with a catalyst to promote ozone decomposition. Thus, when used in conjunction with ozone disinfection, the catalyst attached to the filter sponge 3 can quickly decompose residual ozone. Based on the interception and adsorption of impurities by the filter sponge 3, the harmful effects of excessive ozone on human health and the environment are avoided. This overcomes the limitations of traditional filtration devices that rely solely on physical interception and simple adsorption but cannot handle residual ozone, significantly improving the safety of the filtration device. It also expands the applicability of the filtration device in ozone disinfection and purification scenarios.

[0027] Specifically, the catalyst is a conventional, commercially available catalyst used to promote ozone decomposition.

[0028] Preferably, activated carbon is attached to the filter sponge 3. In this way, the strong adsorption performance of activated carbon combined with the physical retention effect of the sponge can form a synergistic effect, which can not only increase the adsorption capacity of odors and colored substances in the air, but also further adsorb some harmful gases or liquid impurities. This solves the problem that traditional filtration devices are not effective in removing such soluble or volatile impurities, thereby meeting higher purification standards and improving the quality of filtered air.

[0029] like Figure 4 As shown, preferably, the filter sponge 3 is initially a rectangular block sponge. The left and right width of the block sponge is smaller than the left and right width of the frame 1. The upper surface of the block sponge is provided with a plurality of first separation seams 33 extending downward and distributed left and right. The lower surface of the block sponge is provided with a plurality of second separation seams 34 extending upward and distributed left and right. The first separation seams 33 and the second separation seams 34 are spaced apart. The left and right ends of the block sponge are respectively fixed to the left and right ends inside the frame 1 so as to unfold each separation seam and form the filter sponge 3. The first separation seam 33 is used to unfold to form the trough part 32, and the second separation seam 34 is used to unfold to form the crest part 31.

[0030] As described above, the filter sponge 3 in this case is initially rectangular in shape and its width is smaller than that of the frame 1. At the same time, the upper surface is provided with a first separation seam 33 and the lower surface is provided with a second separation seam 34. The first separation seam 33 and the second separation seam 34 are spaced apart. In this way, by fixing the two ends of the filter sponge 3 to the left and right ends of the frame 1 respectively, the rectangular sponge can be unfolded to form a crest part 31 and a trough part 32. In this way, there is no need to perform complex one-piece molding processing on the sponge. The filter sponge 3 with a large surface area can be obtained by simply opening the seam and stretching and fixing it. While increasing the surface area of ​​the filter sponge 3, it avoids significantly increasing the processing difficulty and production cost, and takes into account both the processing convenience and the improvement of the filtration effect.

[0031] like Figure 4 As shown, preferably, the left and right width of the block sponge is 80% to 98% of the left and right width of the frame 1, the depth of the first separation seam 33 is 60% to 80% of the thickness of the block sponge, and the depth of the second separation seam 34 is 60% to 80% of the thickness of the block sponge.

[0032] As described above, the width of the block sponge 3 in its natural state is 80% to 98% of the frame 1, while the depth of the separation seam is 60% to 80% of the thickness of the block sponge. Controlling the width of the block sponge and the depth of the separation seam within the above proportions ensures that when the block sponge is unfolded into the filter sponge 3, it can form stable crests 31 and troughs 32 to increase the surface area. It also avoids insufficient structural strength of the filter sponge 3 due to excessively deep separation seams, ensuring that air can pass through smoothly without affecting the structural stability of the filter sponge 3 while improving the filtration effect.

[0033] like Figures 2 to 3 As shown, optionally, fixing baffles 6 are attached to both the front and rear sides of the filter sponge 3. The fixing baffles 6 are used to maintain the shape of the filter sponge 3 to prevent the crest part 31 from collapsing downwards and to seal the front and rear sides of the filter sponge 3 to prevent air leakage.

[0034] As described above, as one embodiment of this invention, fixed baffles 6 can also be attached to the front and rear sides of the filter sponge 3. The fixed baffles 6 fix the side shape of the filter sponge 3, thereby maintaining the shape of the crests 31 and troughs 32. This prevents the crests 31 from collapsing downwards under air pressure or during long-term use, avoiding deformation of the filter sponge 3 structure that could affect filtration efficiency. Attaching the fixed baffles 6 effectively ensures the stability of the filter sponge 3 structure, ensuring long-term stability of the filtration effect and extending the service life of the filtration device. Furthermore, the fixed baffles 6 can also seal the front and rear sides of the filter sponge 3, preventing air leakage and forcing air to pass only through the filter sponge.

[0035] like Figures 5 to 6 As shown, optionally, the frame 1 is also provided with a support frame 5, which is used to support the area below each crest 31 to prevent the crest 31 from collapsing downwards.

[0036] As described above, as a second embodiment of this case, when there is a risk of the crest portion 31 collapsing downwards, a support frame 5 for supporting the crest portion 31 can also be provided inside the frame 1 of this case. This can effectively prevent the crest portion 31 from collapsing downwards under air pressure or during long-term use, and avoid affecting the filtration efficiency due to structural deformation of the filter sponge 3. By setting the support frame 5, the stability of the structure of the filter sponge 3 can be effectively guaranteed, ensuring that the filtration effect remains stable for a long time, thereby extending the service life of the filtration device.

[0037] like Figures 5 to 6As shown, preferably, the support frame 5 includes a rectangular base frame 51 placed on the lower non-woven fabric 4, and a plurality of gantry frames 52 distributed left and right are erected between the front and rear sides of the base frame 51. The position and number of the gantry frames 52 are paired with the crest portion 31 and abut against the bottom of the crest portion 31 as support.

[0038] As described above, the support frame 5 in this case includes a base frame 51 and several gantry frames 52. The base frame 51 can provide a stable support for the entire support frame 5, while the gantry frames 52 are set one-to-one with the crests 31 and abut against the support. This can ensure the accuracy and stability of the support for the crests 31, and will not cause significant obstruction to the passage of air. While ensuring the structural stability of the filter sponge 3, the filtration effect will not be affected by the increase in air resistance.

[0039] As stated above, this case protects a high-efficiency filtration device, and all technical solutions that are the same as or similar to this case should be considered to fall within the scope of protection of this case.

Claims

1. A high-efficiency filtration device, characterized in that... The frame (1) is rectangular in shape. The frame (1) is hollow and has openings (11) at the top and bottom. A filter screen (2) is fixed at each opening (11). A filter sponge (3) is also provided inside the frame (1). A non-woven fabric (4) is provided between the filter sponge (3) and each filter screen (2). The filter sponge (3) extends from the bottom non-woven fabric (4) to the upper right from left to right, then extends to the upper non-woven fabric (4), then extends to the lower right, then extends to the lower non-woven fabric (4), and then extends to the upper right again. This process is repeated to form several intermittently arranged crests (31) and troughs (32). The crests (31) and troughs (32) are used to increase the surface area of ​​the filter sponge (3).

2. The high-efficiency filtration device according to claim 1, characterized in that... The filter sponge (3) is coated with a catalyst for promoting ozone decomposition.

3. The high-efficiency filtration device according to claim 1, characterized in that... Activated carbon is attached to the filter sponge (3).

4. The high-efficiency filtration device according to claim 1, characterized in that... The filter sponge (3) is initially a rectangular block sponge. The width of the block sponge is smaller than the width of the frame (1). The upper surface of the block sponge is provided with several downwardly extending left and right distributed first separation seams (33). The lower surface of the block sponge is provided with several upwardly extending left and right distributed second separation seams (34). The first separation seams (33) and the second separation seams (34) are spaced apart. The left and right ends of the block sponge are respectively fixed to the left and right ends inside the frame (1) so that each separation seam can be unfolded to form the filter sponge (3). The first separation seam (33) is used to unfold to form the trough part (32), and the second separation seam (34) is used to unfold to form the crest part (31).

5. A high-efficiency filtration device according to claim 4, characterized in that... The width of the block sponge is 80% to 98% of the width of the frame (1), the depth of the first separation seam (33) is 60% to 80% of the thickness of the block sponge, and the depth of the second separation seam (34) is 60% to 80% of the thickness of the block sponge.

6. A high-efficiency filtration device according to claim 1, characterized in that... The filter sponge (3) has fixed baffles (6) pasted on both the front and back sides. The fixed baffles (6) are used to maintain the shape of the filter sponge (3) to prevent the crest (31) from collapsing downwards and to seal the front and back sides of the filter sponge (3) to prevent air leakage.

7. A high-efficiency filtration device according to claim 1, characterized in that... The frame (1) is also provided with a support frame (5), which is used to support the area below each crest (31) to prevent the crest (31) from collapsing downwards.

8. A high-efficiency filtration device according to claim 7, characterized in that... The support frame (5) includes a rectangular base frame (51) placed on the lower non-woven fabric (4). Several gantry frames (52) are arranged between the front and rear sides of the base frame (51). The position and number of the gantry frames (52) are applied one-to-one with the crest part (31) and abut against the crest part (31) as support.

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