CN103100268A

CN103100268A - Dust collecting filter

Info

Publication number: CN103100268A
Application number: CN2013100453187A
Authority: CN
Inventors: 皮小春; 邹云辉; 冯欢欢
Original assignee: Foshan Shunde Apollo Air Cleaner Co Ltd
Current assignee: Freudenberg Apollo Filtration Technologies Co Ltd
Priority date: 2013-02-05
Filing date: 2013-02-05
Publication date: 2013-05-15

Abstract

The invention discloses a dust collecting filter. The dust collecting filter comprises a filter body which is formed by overlapping layer by layer, concentrically strapping and/or spirally curling thin belt layers with toughness, wherein a plurality of semi-through holes convex out of one end face are punched on thin belts, and the semi-through holes divide the adjacent thin belts in the filter body into gaps. When the air passes through gaps of each layer of the filter body, the air is divided into thin flows due to the semi-through holes among the layers, the flow speed is slowed down, and the dust in the air is baffled by thin pieces, so that the dust collecting filter plays a good role in filtering; the dust collecting filter is simple in structure, and easy to produce and assemble, and the cost can be reduced; and the dust collecting filter is flexible in structure, and the shape can be adjusted as required, so that the dust collecting filter is applicable to the requirement of different filters.

Description

A kind of dust-collecting filter

Technical field

The present invention relates to a kind of air cleaning filter.

Background technology

Raising along with people's living standard, everybody is when pursuit is comfortable, more value environmental protection and health, because the existence of a large amount of dust and other particles is arranged in air, be easy to become the medium of various bacteriums, virus propagation, suck too much dust and also easily cause the diseases such as tuberculosis, the infringement health is so dust-collecting filter is widely used in industry, medical treatment and home environment.

Common dust-collecting filter is to adopt fusion-jetting polypropylene fibrous filter or glass fiber filter to make, can be under the 5.33cm/s wind speed particle of 0.3 μ m be reached efficient more than 40%, be up to 99.99%, but the windage of this class material is quite large, is only applicable to industrial filter or home-use air cleaner.PM2.5 is seriously polluted at present, and domestic air conditioning, automotive environment etc. has all proposed to remove the demand of PM2.5 function, so need the material reply of lower resistance.

At present, the cellular material of lower resistance is accomplished to reach filter the dust grade filtering device that is invisible to the naked eye, only have the 3M product HAF of house journal.This product is the polypropylene strip that adopts with electret, is processed into fine and closely woven corrugated honeycomb shape, can be under the 5.33cm/s wind speed, the filter efficiency of 0.3 μ m particle is reached more than 40%, and also do not have similar techniques to surmount in industry at present.

Summary of the invention

For airborne dust and other particles are effectively filtered, reach the filter efficiency equal or higher with existing HAF product, the invention provides a kind of dust-collecting filter.

The technical solution adopted for the present invention to solve the technical problems is:

A kind of dust-collecting filter, comprise that strip with flexible is layering, the filtration main body that forms of hoop and/or helix-coil with one heart, die-cut on described strip have a plurality of chadlesses that protrude from one end, and described chadless will be filtered in main body the adjacent strip of pressing close to and be separated and form the gap.

Further, described chadless is funnelform cross hole punching.

In order to improve dust catching efficiency, and make between strip apart from the gap uniformity, the chadless on the adjacent strip of pressing close to shifts to install.

In order to improve filter efficiency, described strip is the static electrification strip.

Further, described strip is the polypropylene strip of static electrification or is the polypropylene melt-blown fiber strip of static electrification.

Further, described strip is plastic thin strip, metal sheet band, inorfil strip, organic fiber strip or composite fibre strip.

For the filtration agent structure strengthening the deflection of strip, make processing is more stable, described strip is the composite strip of two-layer or two-layer above material.

Preferably, described strip thickness is 0.05mm-2mm.

Further, described strip thickness is 0.1mm-0.5mm.

Best for the distance between the strip that makes adjacent stack, keep than filtration efficiency, outside diameter or the circumscribed circle diameter of described chadless are set to 2-5mm, and the distance on described filtration main body between adjacent chadless center is set to 4-10mm.

The invention has the beneficial effects as follows: when air passes through to filter the space of the every one deck of main body, because the chadless that arranges between layers, air is split into thread, and flow velocity slows down, airborne dust and hair are tackled by thin slice, thereby play good filter effect; If the thin slice static electrification, dust when entering filtration main body space, has changed tracks because of the electric field of generation of static electricity, hits thin slice to be blocked, and filter effect is better; Simple in structure, be easy to produce assembling, reduced cost; Flexible structure can be adjusted shape as required, adapts to different filter needs.

Description of drawings

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1 is the top view of embodiment 1;

Fig. 2 is the partial schematic diagram of the strip 2 of expansion in embodiment 1;

Fig. 3 is the top view of embodiment 2;

Fig. 4 is the partial schematic diagram of the strip 2 of expansion in embodiment 2;

Fig. 5 is the top view of embodiment 3;

Fig. 6 is the partial schematic diagram of the strip 2 of expansion in embodiment 3;

Fig. 7 is structural representation of the present invention.

The specific embodiment

Referring to figs. 1 through Fig. 7.A kind of dust-collecting filter of the present invention, comprise that strip 2 with flexible is layering, the filtration main body 1 that forms of hoop and/or helix-coil with one heart, die-cut on described strip 2 have a plurality of chadlesses 3 that protrude from one end, described chadless 3 will filter that in main body 1, the adjacent strip of pressing close to 2 partition distance form the gap, that namely filters main body 1 is formed the gap by chadless 3 partition distance between layers, will filter the fixing rear filter that forms of main body 1.When air passed through the gap of every one deck, because the distribution of chadless 3 between layers, air was split into thread, and flow velocity slows down, and airborne dust is tackled by strip 2.

Further, described chadless 3 is funnelform cross hole punching.These chadlesses 3 can be linear regular distribution on strip 2, also can irregularly be distributed on strip 2.The die-cut Kong Buhui that is intersection " ten " word or " * " shape produces fragment, and the moulding distortion of die-cut direction upset can be followed in chadless 3 inboards, forms the chadless 3 of a circular funnel-form or square-shaped hopper shape, protrudes at strip 2 back sides.The shape of chadless 3 is relevant with the shape of cutting head.

Referring to Fig. 2, Fig. 4, Fig. 6.In order to improve dust catching efficiency, and make between strip 2 apart from the gap uniformity, the chadless 3 on the strip 2 that adjacent stack is pressed close to shifts to install.

In order to improve filter efficiency, described strip 2 is the static electrification strip.Further, described strip 2 is for the polypropylene plastics strip of electret or be the polypropylene melt-blown fiber strip with electret.When air passed through, grit is easier to be blocked because Electrostatic Absorption change direction hits strip 2, improves filter efficiency.

Further, described strip 2 is plastic thin strip, metal sheet band, inorfil strip, organic fiber strip or composite fibre strip.Inorfil is as glass fibre or ceramic fibre; Organic fiber such as polypropylene fibre or polyster fibre all can be used as the material of strip 2.

More firm for filtration main body 1 structure of strengthening the deflection of strip 2, make processing, described strip 2 is the composite strip of two-layer or two-layer above material.Strip 2 deflections that consist of as fiber are inadequate, need to be two-layer or two-layer above compound, and as polypropylene fibre strip and polyster fibre strip is compound.

Preferably, described strip 2 thickness are 0.05mm-2mm.

Further, described strip 2 thickness are 0.1mm-0.5mm.

Chadless 3 on strip 2 is larger, and the distance that funnelform chadless 3 will separate between layers is just larger; Chadless 3 distributes closeer, air by the time divided must be thinner, Negotiation speed is just slower, filter efficiency is higher.For the distance the best between the strip 2 that makes adjacent stack applying, keep best filter efficiency, outside diameter or the circumscribed circle diameter of described chadless 3 are set to 2-5mm, and the distance on described filtration main body 1 between adjacent chadless 3 centers is set to 4-10mm.

Embodiment 1: is on the polypropylene plastics strip of 0.15mm at the thickness with electret, and die-cut " ten " word, the outside diameter of die-cut formation is 3mm, the distance between chadless 3 centers is 6mm, the circular funnel-form chadless 3 of die-cut rear formation.The polypropylene plastics strip is processed into ring-type with the form of concentric hoop, forms the concentric annular filter after fixing, every layer of strip 2 forms the space because funnelform chadless 3 separates.The filter efficiency of testing filters under the 5.33cm/s wind speed, reaches 47% to 0.3 μ particulate filter efficient.

Embodiment 2: they are on the polyster fibre strip of 0.3mm at thickness, and die-cut " * " shape chadless 3, the circumscribed circle diameter of chadless 3 is 4mm, the distance between chadless 3 centers is 5mm, die-cut rear formation square-shaped hopper shape chadless 3.The polyster fibre strip is processed as helical form with the form of helix-coil, forms the square spiral filter after fixing.

Embodiment 3: be that the polypropylene fibre strip of 0.1mm and glass fibre strip that thickness is 0.15mm are compound with thickness, die-cut " ten " word, the circumscribed circle diameter of chadless 3 is 3mm, and the distance between the center is 5.5mm, die-cut rear formation square-shaped hopper shape chadless 3.The composite fibre strip is processed as square stack filter in the mode that is layering.

Certainly, the present invention can also have other structural distortion except above-mentioned embodiment, and these equivalent technical solutions also should be within its protection domain.

Claims

1. dust-collecting filter, it is characterized in that: comprise that strip with flexible is layering, the filtration main body that forms of hoop and/or helix-coil with one heart, die-cut on described strip have a plurality of chadlesses that protrude from one end, and described chadless will be filtered in main body the adjacent strip of pressing close to and be separated and form the gap.

2. a kind of dust-collecting filter according to claim 1, it is characterized in that: described chadless is funnelform cross hole punching.

3. a kind of dust-collecting filter according to claim 1 is characterized in that: the chadless on the adjacent strip of pressing close to shifts to install.

4. a kind of dust-collecting filter according to claim 1, it is characterized in that: described strip is the static electrification strip.

5. a kind of dust-collecting filter according to claim 4, it is characterized in that: described strip is the polypropylene strip of static electrification or is the polypropylene melt-blown fiber strip of static electrification.

6. the described a kind of dust-collecting filter of any one according to claim 1-5, it is characterized in that: described strip is the composite strip of two-layer or two-layer above material.

7. the described a kind of dust-collecting filter of any one according to claim 1-5, it is characterized in that: described strip thickness is 0.05mm-2mm.

8. a kind of dust-collecting filter according to claim 7, it is characterized in that: described strip thickness is 0.1mm-0.5mm.

9. the described a kind of dust-collecting filter of any one according to claim 1-5, it is characterized in that: the outside diameter of described chadless or circumscribed circle diameter are 2-5mm.

10. the described a kind of dust-collecting filter of any one according to claim 1-5 is characterized in that: the distance on described filtration main body between adjacent chadless center is 4-10mm.