CN115007318A

CN115007318A - Micro-static air filter

Info

Publication number: CN115007318A
Application number: CN202210759765.8A
Authority: CN
Inventors: 马杰锋
Original assignee: Cixi Honge Electric Appliance Ltd
Current assignee: Cixi Honge Electric Appliance Ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-09-06

Abstract

The invention relates to a micro-electrostatic air filter, which comprises a filtering main body consisting of a plurality of conductive electrodes and wrapping electrodes which are alternately arranged, wherein the conductive electrodes and the wrapping electrodes are arranged to alternately supply power at a high potential and a low potential; the outer surface of the wrapping electrode is insulated; and supporting structures are arranged on two sides of the filtering main body, and the wrapping electrodes and the conductive electrodes are fixed at intervals by the supporting structures. The invention has the beneficial effects that: 1. according to the invention, the wrapping electrodes are arranged, and the non-metal insulating layer is coated outside the electrode plate, so that the voltage difference between the electrode plate and the conductive electrode is increased, and the dust adsorption efficiency is improved; 2. set up bearing structure, fix a position and fix conductive electrode and parcel electrode respectively, guarantee that the spacing distance between adjacent conductive electrode and the parcel electrode is unanimous and the installation is stable.

Description

Micro-static air filter

Technical Field

The invention relates to a filter, in particular to a micro-electrostatic air filter.

Background

Electrostatic filters come in a variety of sizes and shapes and are widely used in industrial, commercial and domestic applications. For example, they are used industrially to remove suspended particles from the hot exhaust gas of coal-fired power plants. In a wide range of chemical industries, they are used to clean cold and hot air streams. Most commercial applications and all domestic applications of electrostatic filters are used for cleaning unwanted "pollutant" particles from ambient air.

The working principle of electrostatic precipitation is generally two-stage, in the first stage or stage, to charge contaminants or other undesirable particles in the gas stream. In the second stage or stage, some of the charged particles are captured and removed from the gas stream using a suitable filter. The level of capture of charged particles defines the efficiency of the precipitator, which can typically range from 80% to 99.9%, and these higher efficiencies can be achieved in environments where there are little or no spatial constraints on the location of the precipitator, for example, in the stack of a coal-fired power plant.

The second stage or stage of electrostatic precipitation typically comprises a set of parallel electrically conductive plates (electrodes) designed to trap charged particles. Alternating ones of the plates are typically arranged to operate at relatively high and relatively low potentials. The low potential plate is typically at ground potential and is therefore typically referred to as the "ground plate" or "ground electrode". For example, if a high potential plate is powered at, for example +6kV, and a low potential plate is held at ground potential (0kV), by means of an electric field, positively charged particles in the air flow passing between the plates will be attracted and move towards the adjacent ground plate where they are trapped. The positive charge on the trapped particles will be transferred to the ground plate and flow as part of the circuit.

Various air filters utilizing the electrostatic dust removal principle have appeared in the prior art, but due to the fact that the electrode plates have high requirements on the structure, the mounting structure of many air filters is unstable, and adverse conditions such as short circuit and the like are easily caused between the two electrode plates.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a micro-electrostatic air filter which adopts a new structure to fix an electrode plate, so that short circuit caused by instable installation of the electrode plate is avoided.

A micro-electrostatic air filter comprising a filter body consisting of a plurality of alternately arranged conductive electrodes and wrap electrodes arranged to be alternately supplied with high and low potentials; the outer surface of the wrapping electrode is insulated; and supporting structures are arranged on two sides of the filtering main body and are used for fixing the wrapping electrodes and the conductive electrodes at intervals.

The technical scheme is further set as follows: the supporting structure comprises a plurality of corresponding supporting members and isolating members, the supporting members are embedded into the isolating members, and slots are uniformly arranged on the isolating members at intervals and used for inserting the conductive electrodes and wrapping the electrodes.

The technical scheme is further set as follows: the support member comprises a first support member for supporting a plurality of the conductive electrodes and a second support member for supporting a plurality of wrapped electrodes; the first support member and the second support member are alternately arranged at both sides of the filter body and are respectively connected with the conductive electrode and the wrapping electrode.

The technical scheme is further set as follows: the conductive electrode can be a single-layer conductive sheet made of a conductive material, and can also be an insulating sheet coated or wrapped with a conductive material.

The technical scheme is further set as follows: the wrapping electrode is formed by wrapping an insulating layer on the outer side of the conductive electrode.

The technical scheme is further set as follows: the lateral part of filtering the main part is provided with can with bearing structure complex installation breach, bearing structure imbeds in the installation breach, and bearing structure's outermost end is no longer than filter the edge of main part.

The technical scheme is further set as follows: the installation breach includes the groove of dodging and the compensation breach of setting up in turn transversely and vertically all in the main part of filtering, just the opening of dodging the groove is greater than the opening of compensation breach.

The technical scheme is further set as follows: the first supporting member and the second supporting member are arranged on the inner side of the compensation gap, and the conductive electrode and the wrapping electrode are provided with through holes capable of allowing the supporting members to penetrate through.

The technical scheme is further set as follows: the position of a slot on the isolation component is matched with the position of the compensation gap in an embedding manner, and the filter body is inserted into the slot; and a gap is reserved between the isolation component and the groove wall of the avoidance groove.

The technical scheme is further set as follows: the avoidance groove and the compensation notch are both trapezoidal notches.

The invention has the beneficial effects that:

1. according to the invention, the wrapping electrode is arranged, and the insulating layer is arranged outside the conductive electrode, so that the possibility of electric leakage in an electrostatic field is reduced, and the dust adsorption efficiency is improved;

2. set up bearing structure, fix a position and fix conductive electrode and parcel electrode respectively, guarantee that the spacing distance between adjacent conductive electrode and the parcel electrode is unanimous and the installation is stable.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is an exploded view of the present invention.

Fig. 3 is a schematic diagram of the position structure of the adjacent wire electrode sheet and the wrapping electrode.

Fig. 4 is a schematic view of the installation structure of the filtering body and the supporting structure.

The attached drawings are marked with: 100. a filter body; 110. a conductive electrode; 120. wrapping the electrode; 200. a housing; 300. a support member; 400. an isolation member; 401. a slot; 402. an arc-shaped slot; 310. a limiting round table; 500. a fixing plate; 501. a fixing hole; 502. caulking grooves; 600. positioning a rod; a. perforating; b. positioning a groove; c. compensating the gap; d. avoiding the groove.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.

Referring to fig. 1 and 2, the present embodiment provides a micro-electrostatic air filter, including a filter body 100 composed of a plurality of conductive electrodes 110 and wrapping electrodes 120 alternately arranged, the conductive electrodes 110 and the wrapping electrodes 120 being arranged to be alternately supplied with power at a high potential and a low potential; the outer surface of the wrapped electrode 120 is insulated; the two sides of the filtering body 100 are provided with support structures, and the support structures fix the wrapping electrode 120 and the conductive electrode 110 at intervals.

Preferably, the conductive electrode 110 in this embodiment may be a single-layer conductive sheet made of a conductive material, or may be a coating layer of a conductive material coated on the exterior of an insulating sheet, or a plate material coated with a conductive material on the exterior of an insulating sheet, so that the entire conductive motor 110 can conduct electricity.

Also, the wrapped electrode 120 in this embodiment is formed by coating a coating layer of an insulating material on the outer surface of the conductive electrode 110, or wrapping a plate of an insulating material to form an insulating layer on the surface.

In the prior art, the two electrodes of high potential and low potential are both conducting strips, and after a proper amount of dust is adsorbed in an electrostatic field, the dust is charged and is positioned between the two conducting strips, so that electric leakage is easily generated. In the embodiment, the surface of one of the electrodes is insulated, and enough dust needs to be accumulated in the electrostatic field to be connected between the two conductive electrodes 110 to form electric leakage, so that the possibility of electric leakage is reduced, more dust can be adsorbed, and the dust removal efficiency is improved.

Preferably, the conductive electrodes 110 and the wrapping electrodes 120 are alternately disposed in an offset manner.

In the production process of the electrode plate, the same pair of dies can be used for slotting and perforating the conductive electrode 110 and the wrapping electrode 120, and the conductive electrode 110 and the wrapping electrode 120 are dislocated during installation, so that the compensation notch c and the avoidance groove d on the adjacent conductive electrode 110 and the adjacent wrapping electrode 120 can form dislocation.

The compensation gap c is used to compensate the isolation member 400, so that the housing of the isolation member 400 can be inserted into the compensation gap c, so that the outer end of the isolation member 400 is flush with the outer end of the filter body 100.

The conductive electrode 110 in the present embodiment is arranged at a high potential, and the wrap electrode 120 is arranged at a low potential. In other embodiments, the conductive electrode 110 may also be a low potential, and the wrap electrode 120 is disposed at a high potential.

Through the improvement of the above technical solution, the filtering main body 100 is installed through the supporting structure, so that the conductive electrode 110 and the wrapping electrode 120 are spaced apart and set at the same spacing distance on the premise of stable installation. Meanwhile, a plurality of support structures are arranged on two sides of the filtering main body 100, so that the conductive electrode 110 or the wrapping electrode 120 in the middle part of the filtering main body 100 is prevented from bending and sagging, and the distance between the conductive electrode 110 and the wrapping electrode 120 at the position is prevented from changing.

In the present embodiment, in order to provide integrity to the filter body 100, a housing 200 is provided outside the filter body 100, and both front and rear end surfaces of the housing 200 are opened to expose the filter body 100, thereby filtering air passing through the opening.

In order to satisfy the stable support of the support structure to the filter body 100, the support structure includes a plurality of corresponding support members 300 and isolation members 400, the support members 300 are embedded in the isolation members 400, and the isolation members 400 are provided with slots 401 at intervals for inserting the conductive electrodes 110 and the wrapping electrodes 120.

Referring to fig. 2, in the present embodiment, the supporting member 300 is an elongated cylinder, and the upper end of the cylinder is provided with a limiting circular truncated cone 310, the isolating member 400 is provided with an arc-shaped groove 402 capable of accommodating the supporting member 300, the supporting member 300 is embedded into the arc-shaped groove 402, and the limiting circular truncated cone 310 is located above the isolating member 400, so as to facilitate the detachment of the supporting member 300 and the isolating member 400.

Preferably, in order to fixedly mount the plurality of support members 300 and the partition member 400, fixing plates 500 are provided at upper and lower sides of the filter body 100, caulking grooves 502 corresponding to the partition member 400 are provided at both side walls of the fixing plates 500, fixing holes 501 for connecting the support members 300 are provided at the fixing plates 500 at the inner sides of the caulking grooves 502, the cylindrical portions of the support members 300 are inserted into the fixing holes 501 and pressed down until being connected to the fixing plate 500 at the bottom, and the stopper round table 310 abuts against the end surface of the fixing plate 500 at the upper side.

Meanwhile, the support member 300 includes a first support member for supporting the plurality of conductive electrodes 110 and a second support member for supporting the plurality of wrapped electrodes 120; the first support member and the second support member are alternately arranged at both sides of the filtering body 100 and are connected to the conductive electrode 110 and the wrapping electrode 120, respectively.

In the present embodiment, the first support member and the second support member have the same structure, and are different only in that different electrode sheets are supported and connected.

In order to enable the filter body 100 to be fittingly mounted to a support structure and to ensure the uniformity of the outer shape of the filter body 100, the side portion of the filter body 100 is provided with a mounting notch fittingly engaged with the support structure, the support structure is embedded in the mounting notch, and the outermost end of the support structure does not exceed the edge of the filter body 100.

Referring to fig. 3, specifically, the installation notch includes an avoiding groove d and a compensating notch c alternately arranged on the filtering main body 100 in the transverse direction and the longitudinal direction, and an opening of the avoiding groove d is larger than an opening of the compensating notch c.

The isolation member 400 is correspondingly arranged in the compensation notch c, the slot 401 on the isolation member 400 is corresponding to the conductive electrode 110 or the wrapped electrode 120, and the isolation member 400 is forced to insert the compensation notch c on the conductive electrode 110 or the wrapped electrode 120 into the slot 401 of the isolation member 400.

In this embodiment, the isolation member 400 is also divided into a first isolation member 400 and a second isolation member 400, wherein the first isolation member 400 is used for connecting the conductive electrode 110, and the second isolation member 400 is used for connecting the wrapped electrode 120, and the structure is uniform.

Preferably, the avoiding groove d and the compensating notch c are both trapezoidal notches.

Preferably, the slot 401 of the isolation member 400 is in insertion fit with the compensation notch c, and a gap is left between the isolation member 400 and the wall of the avoidance groove d.

Through the improvement, the avoiding groove d and the compensating notch c are set to be trapezoidal notches, so that two side parts of the avoiding groove d and the compensating notch c do not interfere with the isolation member 400, and the installation can be carried out quickly. Meanwhile, the opening of the avoiding groove d is larger than the opening of the compensating gap c, when the first isolation member is connected to the conductive electrode 110, the avoiding groove d is formed on the wrapping electrode 120 at the same position, and the opening of the avoiding groove d is larger, so that interference with the first isolation member is avoided. That is, the first isolation member is only used to fixedly isolate the conductive electrodes 110 on the filter body 100, and to ensure that the spacing distance between the adjacent conductive electrodes 110 is uniform.

Likewise, the second isolation member is only used to fixedly isolate the wrapped electrodes 120 on the filtering body 100 and ensure that the spacing distance between adjacent wrapped electrodes 120 is consistent.

Therefore, when the distance between the adjacent conductive electrode 110 and the wrapped electrode 120 needs to be consistent during design, only the position of the slot 401 on the isolation member 400 needs to be accurately positioned.

In this embodiment, the first supporting member and the second supporting member are disposed inside the compensation notch c, and the conductive electrode 110 and the wrapping electrode 120 are provided with a through hole a through which the supporting member 300 can pass.

Referring to fig. 4, when the electrode assembly is installed, the first supporting member and the second supporting member are respectively inserted through the through holes a of the conductive electrode 110 and the wrapped electrode 120, so that the conductive electrode 110 and the wrapped electrode 120 are supported on the first supporting member and the second supporting member, the first isolating member and the second isolating member are inserted, the first supporting member is embedded into the arc-shaped groove 402 of the first isolating member, and the second supporting member is embedded into the arc-shaped groove 402 of the second isolating member.

In order to further ensure the stability of the conductive electrode 110 and the wrapped electrode 120, positioning grooves b are further formed in the conductive electrode 110 and the side portion including the electrode plate, and a positioning rod 600 is arranged to connect and fix the positioning grooves b on the conductive electrodes 110 or the wrapped electrode 120.

The usage of this embodiment is the same as the filter using electrostatic dust collection in the prior art, and will not be described herein.

Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A micro-electrostatic air filter, characterized by: comprises a filtering body (100) consisting of a plurality of conductive electrodes (110) and wrapped electrodes (120) arranged alternately, said conductive electrodes (110) and said wrapped electrodes (120) being arranged to be supplied alternately at a high potential and a low potential; the outer surface of the wrapped electrode (120) is insulated; and supporting structures are arranged on two sides of the filtering main body (100), and the wrapping electrodes (120) and the conductive electrodes (110) are fixed at intervals by the supporting structures.

2. The micro-electrostatic air filter of claim 1, wherein: the supporting structure comprises a plurality of corresponding supporting members (300) and an isolating member (400), wherein the supporting members (300) are embedded into the isolating member (400), and slots (401) are uniformly arranged on the isolating member (400) at intervals and used for inserting the conductive electrodes (110) and the wrapping electrodes (120).

3. The micro-electrostatic air filter of claim 2, wherein: the support member (300) comprises a first support member for supporting a plurality of the conductive electrodes (110) and a second support member for supporting a plurality of wrapped electrodes (120); the first and second support members are alternately arranged at both sides of the filtering body (100) and are connected with the conductive electrode (110) and the wrapping electrode (120), respectively.

4. The micro-electrostatic air filter of claim 1, wherein: the conductive electrode (110) can be a single-layer conductive sheet made of a conductive material, or can be an external coating or wrapping of a conductive material on an insulating sheet.

5. The micro-electrostatic air filter of claim 4, wherein: the wrapping electrode (120) is formed by wrapping an insulating layer on the outer side of the conductive electrode (110).

6. The micro-electrostatic air filter of claim 3, wherein: the lateral part of filtering main part (100) is provided with can with bearing structure complex installation breach, bearing structure imbeds in the installation breach, and bearing structure's outermost end is no longer than filter the edge of main part (100).

7. The micro-electrostatic air filter of claim 6, wherein: installation notch includes dodging groove (d) and compensation breach (c) that transversely and vertically all set up in turn on filtering main part (100), just the opening of dodging groove (d) is greater than the opening of compensation breach (c).

8. The micro-electrostatic air filter of claim 7, wherein: the first supporting member (300) and the second supporting member (300) are arranged at the inner side of the compensation gap (c), and the conductive electrode (110) and the wrapping electrode (120) are provided with through holes (a) capable of accommodating the supporting members (300) to pass through.

9. The micro-electrostatic air filter of claim 8, wherein: the position of a slot (401) on the isolation member (400) is matched with the position of the compensation notch (c) in an embedding way, and the filtering main body (100) is inserted into the slot (401); a gap is left between the isolation member (400) and a groove wall of the avoidance groove (d).

10. The micro-electrostatic air filter of claim 7, wherein: the avoidance groove (d) and the compensation notch (c) are both trapezoidal notches.