CN210699255U

CN210699255U - Passive electrostatic filtering device

Info

Publication number: CN210699255U
Application number: CN201921181050.9U
Authority: CN
Inventors: 严斌; 赵汉伟; 苏鑫; 何迎春; 龚应姣
Original assignee: Shenzhen Zhongjian South Environment Co ltd
Current assignee: Shenzhen Zhongjian South Environment Co ltd
Priority date: 2019-07-25
Filing date: 2019-07-25
Publication date: 2020-06-09
Anticipated expiration: 2029-07-25

Abstract

The utility model provides a passive static filtering device, which comprises a filter support, wherein the filter support is provided with metal fibers and insulating material fibers, the metal fibers and the insulating material fibers are alternately arranged, and a gap is arranged between the adjacent metal fibers and the insulating material fibers; when air filtration is performed, the metal fibers and the insulating material are in contact under the action of wind or vibration. Adopt the technical scheme of the utility model, through carrying out alternating arrangement with the great insulating fiber material of electronegativity and the less metal fiber material of electronegativity in filter equipment, utilize the electronegativity of two kinds of materials to differ great characteristics, realize the automatic particulate matter of catching under passive condition, play the filter action, saved the energy greatly, the cost is reduced.

Description

Passive electrostatic filtering device

Technical Field

The utility model belongs to the technical field of air purification handles, especially, relate to a passive form electrostatic filter.

Background

At present, the relatively mature electric field is mainly used for realizing a good dust removal effect and comprises an electret filter material and an electrostatic dust collector, wherein the electret filter material enables a fiber filter screen to be electret through corona power generation to obtain an electret, and the obtained filter material has a good capture effect on particulate matters under the action of the internal electret, so that the filter efficiency of the filter material is improved while the pressure loss is not increased; the electrostatic precipitator realizes a high-voltage electric field mainly through corona discharge, thereby capturing charged particles.

However, although the melt-blown electret filter paper has high pressure drop efficiency, the electric field of the electret gradually disappears along with the accumulation of particles in the filter paper in the use process, and the efficiency of the filter paper is greatly reduced; the electrostatic dust collector has the characteristics of high efficiency and low resistance, but the electrostatic dust collector has the disadvantages of large initial investment, high energy consumption and high later maintenance cost.

SUMMERY OF THE UTILITY MODEL

To the technical problem, the utility model discloses a passive form electrostatic filter device solves the inside electric field of electret filter material and disappears the problem of the high energy consumption of efficiency reduction and electrostatic precipitator that causes, does not need plus the power and the electric field can exist always.

To this end, the technical scheme of the utility model is that:

a passive static filtering device comprises a filter support, wherein metal fibers and insulating material fibers are arranged on the filter support, the metal fibers and the insulating material fibers are arranged alternately, and gaps are formed between the adjacent metal fibers and the adjacent insulating material fibers; when air filtration is performed, the metal fibers and the insulating material are in contact under the action of wind or vibration.

By adopting the technical scheme, the electronegativity of the metal fiber and the insulating material fiber is greatly different, the metal fiber and the insulating material fiber are alternately arranged, when the two fibers are contacted, part of electrons on the surface of the metal fiber can be transferred to the insulating material fiber, and the electrons can stably exist on the insulating material fiber due to the high insulativity of the insulating material fiber, so that a stable electric field is formed, particles are captured on the surface of the insulating material fiber, and a filtering effect is achieved; as long as there is air through the filter and there is gas flow, will produce the vibration, the electrostatic field can be constantly supplemented to avoid the risk that the electrostatic field disappears, and because need not form the electrostatic field with the help of external power, saved the energy greatly.

Further, the metal fibers and the insulating material fibers extend in the same direction.

As a further improvement of the utility model, the clearance is 0.5~5mm between metal fiber and the insulating material fibre. Furthermore, the gap between the metal fiber and the insulating material fiber is 1-3 mm. Facilitating contact and separation of the two fibers.

As a further improvement of the present invention, the filter holder includes a first holder and a second holder, one end of the metal fiber is connected to the first holder, and the other end of the metal fiber faces the second holder, is connected to or suspended from the second holder, and has a gap with the second holder; one end of the insulating material fiber is connected with the second support, and the other end of the insulating material fiber faces the first support, is connected with the first support or is suspended in the air, and has a gap with the first support. Further, the first bracket and/or the second bracket is a filter housing. The fiber can be directly arranged in the shell, the bracket can be arranged in the shell, the fiber is further arranged, and the fiber can be arranged according to the use requirement. If the both ends that adopt fibre all with the leg joint, then fibrous setting up to flexible setting, not taut promptly, let it rock about can.

As a further improvement of the present invention, the gap between the other end of the metal fiber and the second bracket is not more than 1-5 mm; and the gap between the other end of the insulating material fiber and the first support is not more than 1-5 mm. By adopting the technical scheme, the superposition of the metal fibers and most of the fibers of the knot-edge material is ensured. A gap is reserved, so that the two are easy to contact under the action of wind or vibration.

As a further improvement of the present invention, the filter holder further includes a third holder, a fourth holder, a fifth holder and a sixth holder, the arrangement of the metal fiber and the insulating material fiber between the second holder and the third holder, between the third holder and the fourth holder, between the fourth holder and the fifth holder, between the fifth holder and the sixth holder is the same as the arrangement between the first holder and the second holder. Adopt the multilayer support, be convenient for increase filter area improves filtration efficiency.

As a further improvement of the utility model, the metal fiber and the insulating material fiber are mutually interpenetrated and are arranged in a cross way.

As a further improvement of the utility model, the first support and the second support are arranged in parallel.

As a further improvement of the present invention, the first support is a housing of the passive electrostatic filtering device.

As a further improvement of the present invention, the insulating material fiber is made of PDMS (polydimethylsiloxane). PDMS is more electronegative. Furthermore, the resilience of the PDMS fiber can be adjusted by adjusting the proportion of the PDMS elastomer and the curing agent, so that the PDMS fiber has relatively good resilience.

As a further improvement of the utility model, the metal fiber is aluminum or copper fiber with smaller electronegativity.

As a further improvement of the utility model, the material of the filter support is epoxy resin or polyurethane.

Compared with the prior art, the beneficial effects of the utility model are that:

adopt the technical scheme of the utility model, through carrying out alternating arrangement with the great insulating fiber material of electronegativity and the less metal fiber material of electronegativity in filter equipment, utilize the electronegativity of two kinds of materials to differ great characteristics, realize the automatic particulate matter of catching under passive condition, play the filter action, saved the energy greatly, the cost is reduced.

Drawings

Fig. 1 is a schematic view of the internal structure of a passive electrostatic filter of the present invention.

Fig. 2 is a partial enlarged view of a passive electrostatic filter according to the present invention.

The reference numerals include:

1-a filter bracket, 2-metal fibers, 3-PDMS fibers, 11-a first bracket, 12-a second bracket, 13-a third bracket, 14-a fourth bracket, 15-a fifth bracket and 16-a sixth bracket.

Detailed Description

Preferred embodiments of the present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, a passive electrostatic filtering apparatus includes a filter support 1, wherein metal fibers 2 and PDMS fibers 3 are disposed on the filter support 1, the metal fibers 2 and PDMS fibers 3 are alternately arranged, and a gap is disposed between adjacent metal fibers 2 and PDMS fibers 3; when air filtration is performed, the metal fibers 2 come into contact with the insulating material under the action of wind or vibration. The metal fiber 2 and the PDMS fiber 3 extend in the same direction. Wherein the metal fiber 2 is an aluminum or copper fiber with small electronegativity.

Further, the filter holder 1 comprises a first holder 11 and a second holder 12, one end of the metal fiber 2 is connected with the first holder 11, and the other end of the metal fiber 2 is suspended towards the second holder 12 and has a gap with the second holder 12; one end of the PDMS fiber 3 is connected to the second support 12, and the other end of the PDMS fiber 3 is suspended toward the first support 11 with a gap left between the PDMS fiber and the first support 11. Or the metal fiber 2 is positioned opposite to the PDMS fiber 3.

Further, the gap between the metal fiber 2 and the PDMS fiber 3 is 0.5-5 mm. Further, the gap between the metal fiber 2 and the PDMS fiber 3 is 1-3 mm. Facilitating contact and separation of the two fibers.

Further, the gap between the other end of the metal fiber 2 and the second bracket 12 is not more than 1-5 mm; the gap between the other end of the PDMS fiber 3 and the first support 11 is not more than 1-5 mm.

The first bracket 11 is a filter housing, and a plurality of layers of brackets may be further provided as needed, as shown in fig. 1, the filter bracket 1 further includes a third bracket 13, a fourth bracket 14, a fifth bracket 15, and a sixth bracket 16, and the settings of the metal fiber 2 and the PDMS fiber 3 between the second bracket 12 and the third bracket 13, between the third bracket 13 and the fourth bracket 14, and between the fourth bracket 14 and the fifth bracket 15 and the sixth bracket 16 are the same as the settings between the first bracket 11 and the second bracket 12. The sixth bracket 16 is a housing of the filter. The first bracket 11, the second bracket 12, the third bracket 13, the fourth bracket 14, the fifth bracket 15 and the sixth bracket 16 are arranged in parallel. Between adjacent supports, the metal fiber 2 and the PDMS fiber 3 are interpenetrated and arranged in a cross way. The material of the filter bracket 1 is epoxy resin or polyurethane.

By adopting the technical scheme of the embodiment, an external power supply is not needed, and the automatic capture of the particles can be realized under the flowing of wind, so that the filtering effect is realized, the energy is greatly saved, and the cost is reduced.

The above-mentioned embodiments are the preferred embodiments of the present invention, and the scope of the present invention is not limited to the above-mentioned embodiments, and the scope of the present invention includes and is not limited to the above-mentioned embodiments, and all equivalent changes made according to the shape and structure of the present invention are within the protection scope of the present invention.

Claims

1. A passive electrostatic filter, comprising: the filter comprises a filter support, wherein metal fibers and insulating material fibers are arranged on the filter support, the metal fibers and the insulating material fibers are alternately arranged, and gaps are formed between the adjacent metal fibers and the adjacent insulating material fibers; under the action of wind or vibration, the metal fibers and the insulating material are in contact.

2. The passive electrostatic filter of claim 1, wherein: the gap between the metal fiber and the insulating material fiber is 0.5-5 mm.

3. The passive electrostatic filter of claim 1, wherein: the filter bracket comprises a first bracket and a second bracket, one end of the metal fiber is connected with the first bracket, the other end of the metal fiber faces the second bracket, is connected with the second bracket or is suspended in the air, and a gap is reserved between the metal fiber and the second bracket; one end of the insulating material fiber is connected with the second support, and the other end of the insulating material fiber faces the first support, is connected with the first support or is suspended in the air, and has a gap with the first support.

4. The passive electrostatic filter of claim 3, wherein: the gap between the other end of the metal fiber and the second support is not more than 1-5 mm; and the gap between the other end of the insulating material fiber and the first support is not more than 1-5 mm.

5. The passive electrostatic filter of claim 3, wherein: the filter support further comprises a third support, a fourth support, a fifth support and a sixth support, and the arrangement of the metal fibers and the insulating material fibers between the second support and the third support, between the third support and the fourth support, between the fourth support and the fifth support and between the fifth support and the sixth support is the same as the arrangement between the first support and the second support.

6. The passive electrostatic filter of claim 3, wherein: the first support and the second support are arranged in parallel.

7. The passive electrostatic filter of any one of claims 1 to 6, wherein: the insulating material fiber is made of PDMS.

8. The passive electrostatic filter of any one of claims 1 to 6, wherein: the metal fiber is aluminum or copper fiber.

9. The passive electrostatic filter of any one of claims 1 to 6, wherein: the material of the filter bracket is epoxy resin or polyurethane.