Wrinkle type dust removal filtering structure

Abstract

The utility model discloses a wrinkle type dust removal filtering structure which comprises a plurality of connected wrinkles, a peak part is formed at the top of each wrinkle, and a valley part is formed at the bottom connection part between the wrinkles; the distance from the peak part to the valley part is the height of the fold, and the distance between the adjacent peak parts is the fold distance; the portion, from the peak portion to the 1 / 3-2 / 3 height of the fold, of each fold is a first functional area located on the windward side, the portion, from the 1 / 3-2 / 3 height of the fold to the valley portion, of each fold is a second functional area located on the leeward side, and the second functional areas can absorb dust more easily compared with the first functional areas. According to the wrinkle type dust removal filter, the wrinkle structure is divided into two functional areas with different dust adsorption capacities, so that dust can be adsorbed on the downwind side of the wrinkle type dust removal filter more easily, the pressure loss caused by dust accumulation is reduced, and the amount of dust which can be collected by the filtering structure is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal filters, in particular to a corrugated dust removal filter structure. Background Art

[0002] Corrugated dust removal filters are usually used to increase the dust collection amount of dust collection filters and reduce the pressure drop of the filters. However, all surfaces of the dust collection filter are prone to dust adhesion. When used in an environment with a lot of dust such as a factory, the pressure loss will increase rapidly, the frequency and cost of maintenance and repair will increase, and the power consumption of the equipment using the dust collection filter will also increase.

[0003] In Japanese Patent Application JP200237007A, a corrugated filter is disclosed, which is a filter woven into a corrugated shape. At the valley part of the corrugation, each corrugation peak has a discontinuous part to prevent dust accumulation. In Japanese Patent Application JPH04110116U, a corrugated filter is disclosed, which has an electret separator at the valley of the corrugated filter to facilitate dust collection.

[0004] However, the surfaces of the filter structures in the existing corrugated dust removal filters uniformly adsorb dust, which causes the collected dust to uniformly adhere to the entire surface of the filter structure, increasing the pressure loss of the filter, reducing the air flow, thus reducing the filter performance, and requiring frequent maintenance and repair. Summary of the Invention

[0005] The utility model aims to overcome the problem that the surfaces of the filter structures in the existing corrugated dust removal filters uniformly adsorb dust, which causes the collected dust to uniformly adhere to the entire surface of the filter structure, increasing the pressure loss of the filter, and provides a corrugated dust removal filter structure. The corrugated structure is divided into two functional areas with different dust adsorption capacities, so that dust is more easily adsorbed on the downwind side of the corrugated dust removal filter, reducing the pressure loss caused by dust accumulation, and increasing the amount of dust that the filter structure can collect.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] A corrugated dust removal filter structure includes a plurality of connected corrugations. The top of each corrugation forms a peak portion, and the bottom connection between the corrugations forms a valley portion; the distance from the peak portion to the valley portion is the height of the corrugation, and the distance between adjacent peak portions is the corrugation pitch; the part of each corrugation from the peak portion to 1 / 3 - 2 / 3 of the corrugation height is the first functional area located on the upwind side, and the part from 1 / 3 - 2 / 3 of the corrugation height to the valley portion is the second functional area located on the downwind side. The second functional area is more likely to adsorb dust than the first functional area.

[0008] The utility model divides the corrugated dust removal and filtration structure into two different functional areas. The second functional area on the downwind side is more likely to adsorb dust than the first functional area on the upwind side, so that when the filtration structure is in use, the dust is not evenly adsorbed on its surface, but concentrated on the downwind side of the filtration structure. The upwind side is not easily blocked by dust, which can significantly reduce the pressure loss caused by dust accumulation, and increase the amount of dust that the filtration structure can collect, thereby prolonging the maintenance and repair cycle of the filtration structure and reducing the cost. At the same time, it can also prevent the performance of the equipment using the filtration structure of the utility model from declining and reduce its power consumption.

[0009] Preferably, the first functional area is a dust-proof area. Setting the first functional area on the upwind side as a dust-proof area with dust-proof function can prevent dust from accumulating on the upwind side of the corrugated dust removal and filtration structure, making it enriched on the downwind side, and can effectively reduce the pressure loss caused by dust accumulation.

[0010] Preferably, the second functional area is a dust-suction area. Setting the second functional area on the downwind side as a dust-suction area with dust-suction function can make dust more likely to accumulate on the downwind side, and can also reduce the pressure loss caused by the uniform accumulation of dust on the surface of the filtration structure.

[0011] Preferably, the part of each corrugation from the peak to half of the corrugation height is the first functional area, and the part from half of the corrugation height to the valley is the second functional area.

[0012] Preferably, the peak and the valley are arc-shaped.

[0013] Preferably, the bending radius of the peak and the valley is less than half of the corrugation pitch.

[0014] Preferably, the bending radius of the valley is greater than that of the peak.

[0015] More preferably, the relationship between the bending radius R 1 of the peak, the bending radius R 2 of the valley and the corrugation pitch P is: R 1 < R 2 ≤ P / 2 - R 1 .

[0016] Controlling the bending radii of the valley and the peak within the range of the present utility model is more conducive to the accumulation of dust on the downwind side, reducing the pressure loss caused by the uniform accumulation of dust on the surface of the filtration structure, and at the same time conducive to increasing the amount of dust that the filtration structure can collect.

[0017] Preferably, the bending radius R 1 of the peak = 0.5 - 3 mm, and the bending radius R 2 of the valley = 1 - 5 mm.

[0018] Preferably, the height of each fold is 10~150 mm; the fold pitch is 5~20 mm.

[0019] Therefore, the present utility model has the following beneficial effects:

[0020] (1) The corrugated dust filtration structure is divided into two functional areas with different dust adsorption capacities, so that when the filtration structure is in use, dust is not evenly adsorbed on its surface, but concentratedly adsorbed on the downwind side of the filtration structure, which can significantly reduce the pressure loss caused by dust accumulation and increase the amount of dust that the filtration structure can collect;

[0021] (2) Limiting the relationship between the bending radius of the peak and valley and the fold pitch is more conducive to the accumulation of dust on the downwind side and is conducive to increasing the amount of dust that the filtration structure can collect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the corrugated dust filtration structure in Embodiment 1 of the present utility model.

[0023] Figure 2 is a schematic structural diagram of the corrugated dust filtration structure in Embodiment 2 of the present utility model.

[0024] Figure 3 is a schematic structural diagram of the corrugated dust filtration structure in Embodiment 3 of the present utility model.

[0025] In the figure: 1 peak part, 2 valley part, 3 first functional area, 4 second functional area. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following further describes the present utility model in conjunction with the drawings and specific embodiments.

[0027] In the embodiments of the present utility model, unless otherwise specified, all raw materials can be purchased from the market or are commonly used in this industry. The methods in the following embodiments, unless otherwise specified, are conventional methods in this field.

[0028] General embodiment:

[0029] A corrugated dust filtration structure includes a plurality of connected folds. The top of each fold forms a peak part, and the bottom connection part between the folds forms a valley part; the distance from the peak part to the valley part is the height of the fold, and the distance between adjacent peak parts is the fold pitch; the part of each fold from the peak part to 1 / 3~2 / 3 of the fold height is the first functional area located on the upwind side, and the part from 1 / 3~2 / 3 of the fold height to the valley part is the second functional area located on the downwind side. The second functional area is more likely to adsorb dust than the first functional area.

[0030] As a specific implementation manner, the first functional area is a dust-proof area. Setting the first functional area on the upwind side as a dust-proof area with a dust-proof function can prevent dust from accumulating on the upwind side of the corrugated dust removal and filtration structure, making it accumulate on the downwind side, and can effectively reduce the pressure loss caused by dust accumulation.

[0031] As a specific implementation manner, the second functional area is a dust suction area. Setting the second functional area on the downwind side as a dust suction area with a dust suction function can make dust more likely to accumulate on the downwind side, and can also reduce the pressure loss caused by the uniform accumulation of dust on the surface of the filtration structure.

[0032] As a specific implementation manner, the part of each fold from the peak to half of the fold height is the first functional area, and the part from half of the fold height to the valley is the second functional area.

[0033] As a specific implementation manner, the peak and the valley are arc-shaped.

[0034] As a specific implementation manner, the bending radius of the peak and the valley is less than half of the fold pitch.

[0035] As a specific implementation manner, the bending radius of the valley is greater than the bending radius of the peak.

[0036] As a specific implementation manner, the bending radius R of the peak 1 、the bending radius R of the valley 2 and the fold pitch P are related as follows: R 1 <R 2 ≤P / 2 - R 1 .

[0037] As a specific implementation manner, the bending radius R of the peak 1 = 0.5~3 mm, and the bending radius R of the valley 2 = 1~5 mm.

[0038] As a specific implementation manner, the height of each fold is 10~150 mm; the fold pitch is 5~20 mm.

[0039] Example 1:

[0040] A corrugated dust removal and filtration structure, as Figure 1 shown, includes a number of connected folds. The top of each fold forms a peak 1, and the bottom connection between the folds forms a valley 2; the distance from the peak to the valley is the height h of the fold, and the distance between adjacent peaks is the fold pitch P. h = 60 mm, P = 20 mm; the peak and the valley are arc-shaped, the bending radius of the peak is R 1 , and the bending radius of the valley is R 2 , R 1 = R 2= 0.5 mm; for each fold of the peak portion, the part from the peak portion to the half of the fold height is the first functional area 3 on the upwind side, and the part from the half of the fold height to the valley portion is the second functional area 4 on the downwind side. The first functional area is a dust-proof area after water-repellent, oil-repellent and antistatic treatments, and the second functional area is untreated.

[0041] Example 2:

[0042] A corrugated dust filtering structure, as Figure 2 shown, includes a number of connected folds. The top of each fold forms a peak portion 1, and the bottom connection between the folds forms a valley portion 2; the distance from the peak portion to the valley portion is the height h of the fold, and the distance between adjacent peak portions is the fold pitch P. h = 40 mm, P = 10 mm; the peak portion and the valley portion are arc-shaped, and the bending radius of the peak portion is R 1 , and the bending radius of the valley portion is R 2 , R 1 = 2 mm, R 2 = 2.5 mm; for each fold, the part from the peak portion to the half of the fold height is the first functional area 3 on the upwind side, and the part from the half of the fold height to the valley portion is the second functional area 4 on the downwind side. The first functional area is untreated, and the second functional area is a dust-suction area after electrostatic treatment.

[0043] Example 3:

[0044] A corrugated dust filtering structure, as Figure 3 shown, includes a number of connected folds. The top of each fold forms a peak portion 1, and the bottom connection between the folds forms a valley portion 2; the distance from the peak portion to the valley portion is the height h of the fold, and the distance between adjacent peak portions is the fold pitch P. The height and fold pitch of the fold are the same as those in Example 2; the peak portion and the valley portion are arc-shaped, and the bending radius of the peak portion is R 1 , and the bending radius of the valley portion is R 2 , R 1 and R 2 have the same values as those in Example 2; for each fold, the part from the peak portion to the half of the fold height is the first functional area 3 on the upwind side, and the part from the half of the fold height to the valley portion is the second functional area 4 on the downwind side. The first functional area is a dust-proof area after water-repellent, oil-repellent and antistatic treatments, and the second functional area is a dust-suction area after electrostatic treatment.

[0045] Example 4:

[0046] A corrugated dust filtering structure includes a number of connected folds. The top of each fold forms a peak portion, and the bottom connection between the folds forms a valley portion; the distance from the peak portion to the valley portion is the height h of the fold, and the distance between adjacent peak portions is the fold pitch P. h = 10 mm, P = 5 mm; the peak portion and the valley portion are arc-shaped, and the bending radius of the peak portion is R1 , the bending radius of the valley part is R 2 , R 1 = 0.5 mm, R 2 = 1 mm; The part of each fold from the peak to half of the fold height is the first functional area on the upwind side, and the part from half of the fold height to the valley is the second functional area on the downwind side. The first functional area is a dust-proof area after water-repellent, oil-repellent and antistatic treatments, and the second functional area is a dust-absorbing area after electrostatic treatment.

[0047] Example 5:

[0048] A corrugated dust filtration structure includes a number of connected folds. The top of each fold forms a peak, and the bottom connection between the folds forms a valley; the distance from the peak to the valley is the height h of the fold, and the distance between adjacent peaks is the fold pitch P. h = 150 mm, P = 20 mm; The peaks and valleys are arc-shaped, and the bending radius of the peak is R 1 , the bending radius of the valley part is R 2 , R 1 = 4 mm, R 2 = 4.5 mm; The part of each fold from the peak to half of the fold height is the first functional area on the upwind side, and the part from half of the fold height to the valley is the second functional area on the downwind side. The first functional area is a dust-proof area after water-repellent, oil-repellent and antistatic treatments, and the second functional area is a dust-absorbing area after electrostatic treatment.

[0049] Example 6:

[0050] A corrugated dust filtration structure includes a number of connected folds. The top of each fold forms a peak, and the bottom connection between the folds forms a valley; the distance from the peak to the valley is the height h of the fold, and the distance between adjacent peaks is the fold pitch P. h = 40 mm, P = 10 mm; The peaks and valleys are arc-shaped, and the bending radius of the peak is R 1 , the bending radius of the valley part is R 2 , R 1 = 2.5 mm, R 2 = 2 mm; The part of each fold from the peak to half of the fold height is the first functional area on the upwind side, and the part from half of the fold height to the valley is the second functional area on the downwind side. The first functional area is a dust-proof area after water-repellent, oil-repellent and antistatic treatments, and the second functional area is a dust-absorbing area after electrostatic treatment.

[0051] Example 7:

[0052] A corrugated dust filtration structure includes a number of connected corrugations. The top of each corrugation forms a peak 1, and the bottom connection between the corrugations forms a valley. The distance from the peak to the valley is the height h of the corrugation, and the distance between adjacent peaks is the pitch P. h = 40 mm and P = 10 mm. The peak and the valley are arc-shaped, and the bending radius of the peak is R 1 , and the bending radius of the valley is R 2 , R 1 = 2 mm, R 2 = 4 mm. The part of each corrugation from the peak to half of the corrugation height is the first functional area on the upwind side, and the part from half of the corrugation height to the valley is the second functional area on the downwind side. The first functional area is a dust-proof area treated with water repellency, oil repellency, and antistatic properties, and the second functional area is a dust-suction area treated with electrostatic treatment.

[0053] Comparative Example 1:

[0054] A corrugated dust filtration structure includes a number of connected corrugations. The top of each corrugation forms a peak, and the bottom connection between the corrugations forms a valley. The distance from the peak to the valley is the height of the corrugation, and the distance between adjacent peaks is the pitch. The height and pitch of the corrugation are the same as those in Example 1. The peak and the valley are arc-shaped, and the bending radius of the peak and the bending radius of the valley are the same as those in Example 1. Each corrugation is untreated from the peak to the valley.

[0055] Comparative Example 2:

[0056] A corrugated dust filtration structure includes a number of connected corrugations. The top of each corrugation forms a peak, and the bottom connection between the corrugations forms a valley. The distance from the peak to the valley is the height of the corrugation, and the distance between adjacent peaks is the pitch. The height and pitch of the corrugation are the same as those in Example 1. The peak and the valley are arc-shaped, and the bending radius of the peak and the bending radius of the valley are the same as those in Example 1. Each corrugation is a dust-suction area treated with electrostatic treatment from the peak to the valley.

[0057] Comparative Example 3:

[0058] A corrugated dust filtration structure includes a number of connected corrugations. The top of each corrugation forms a peak, and the bottom connection between the corrugations forms a valley. The distance from the peak to the valley is the height of the corrugation, and the distance between adjacent peaks is the pitch. The height and pitch of the corrugation are the same as those in Example 1. The peak and the valley are arc-shaped, and the bending radius of the peak and the bending radius of the valley are the same as those in Example 1. Each corrugation is a dust-proof area treated with water repellency, oil repellency, and antistatic treatment from the peak to the valley.

[0059] The dust collection amount and pressure loss of the corrugated dust removal and filtration structures in the above-mentioned examples and comparative examples were tested. The results showed that in Examples 1-7, the upwind side and downwind side of the corrugated dust removal and filtration structure were functionally partitioned, enabling different dust adsorption capabilities. Compared with the filtration structures without functional partitioning in Comparative Examples 1-3, they had a smaller pressure loss. In Example 1, the first functional area was treated with water repellency, oil repellency, and antistatic properties to endow it with dust-proof function, while the second functional area was not treated; during use, dust was not easily attached to the first functional area and would concentrate on the second functional area, and the first functional area was not easily blocked, thus reducing the pressure loss. In Example 2, the first functional area was not treated, and the second functional area was treated with static electricity to endow it with dust collection function. During use, dust was more likely to be adsorbed and attached to the second functional area, and less attached to the first functional area with weaker dust collection ability. The first functional area was also not easily blocked, reducing the pressure loss. In Examples 3-7, the first functional area was treated with water repellency, oil repellency, and antistatic properties to endow it with dust-proof function, and the second functional area was treated with static electricity to endow it with dust collection function, which was more conducive to dust enrichment in the second functional area, the first functional area was not blocked, and the pressure loss was reduced. And in Examples 3-5, the relationship between the peak bending radius R 1 and the valley bending radius R 2 and the pleat pitch P satisfied R 1 <R 2 <P / 2 - R 1 When compared with R 2 <R 1 in Example 6 and R 1 <P / 2 - R 1 <R 2 in Example 7, a larger dust collection amount could be obtained, which was more conducive to the use of the filtration structure.

[0060] In Comparative Example 1, neither the first functional area nor the second functional area was treated, and dust would be evenly attached to the surface of the filtration structure. The filtration structure was easily blocked as a whole after being used for a period of time, resulting in a large pressure loss. In Comparative Example 2, both the first functional area and the second functional area were treated with static electricity to endow them with dust collection function, and the filtration structure was also easily blocked as a whole, generating a large pressure loss. In Comparative Example 3, both the first functional area and the second functional area were treated with water repellency, oil repellency, and antistatic properties to endow them with dust-proof function, and the dust removal effect of the filtration structure would be affected, which was not conducive to its use.

[0061] Although the above has described the present utility model with specific embodiments, it can be understood that the above embodiments are for understanding the method and core matters of the present utility model and should not be construed as a limitation of the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model without departing from the principles and purposes of the present utility model. Any simple modifications, equivalent changes, and decorations made to the above embodiments based on the technical essence of the present utility model shall be regarded as within the protection scope of the present utility model.

Claims

1. A pleated dust removal filter structure, characterized in that: It includes several connected folds, the top of each fold forms a peak, and the bottom connection between the folds forms a valley; the distance from the peak to the valley is the height of the fold, and the distance between adjacent peaks is the pleat distance; the part from the peak to 1 / 3~2 / 3 of the fold height of each fold is the first functional area located on the upwind side, and the part from 1 / 3~2 / 3 of the fold height to the valley is the second functional area located on the leeward side, and the second functional area is easier to absorb dust than the first functional area.

2. The pleated dust removal and filtering structure according to claim 1 is characterized in that: The first functional area is a dustproof area.

3. The pleated dust removal and filtering structure according to claim 1 or 2, characterized in that: The second functional area is a dust collection area.

4. The pleated dust removal and filtering structure according to claim 1 is characterized in that: The portion of each pleat from the peak to 1 / 2 of the pleat height is the first functional zone, and the portion from 1 / 2 of the pleat height to the valley is the second functional zone.

5. The pleated dust removal and filtering structure according to claim 1 is characterized in that: The peaks and valleys are arc-shaped.

6. The pleated dust removal and filtering structure according to claim 5 is characterized in that: The bending radius of the peaks and valleys is less than half of the pleat distance.

7. The pleated dust removal and filtering structure according to claim 5 or 6, characterized in that: The bending radius of the valley is greater than the bending radius of the peak.

8. The pleated dust removal and filtering structure according to claim 7 is characterized in that: The relationship between the bending radius R1 of the peak, the bending radius R2 of the valley and the pleat distance P is: R1<R2≤P / 2-R1.

9. The pleated dust removal and filtering structure according to claim 8 is characterized in that: The bending radius of the peak is R1 = 0.5 ~ 3mm, and the bending radius of the valley is R2 = 1 ~ 5mm.

10. The pleated dust removal and filtering structure according to claim 1 or 4 or 8 or 9, characterized in that: The height of each pleat is 10~150mm; the pleat distance is 5~20mm.

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