CN212732580U - Electrostatic adsorption particle trap with external electrode insulation - Google Patents

Abstract

The utility model discloses an electrode insulation external electrostatic adsorption particle catcher, which comprises a dust collecting barrel, wherein both ends of the dust collecting barrel are respectively provided with an air inlet pipe and an air outlet pipe, the outer walls of the air inlet end and the air outlet end of the dust collecting barrel are respectively provided with an insulation support piece, the electrostatic adsorption particle catcher also comprises a high-voltage power supply binding post, the high-voltage power supply binding post runs through the dust collecting barrel, both ends of the high-voltage power supply binding post pass through the insulation support piece and are supported and fixed by the insulation support piece; and a corona wire is electrically connected between the high-voltage power supply binding posts at the air inlet end and the air outlet end. The utility model discloses a high-pressure electrostatic absorption technique of through has strengthened electric field strength and has prolonged the entrapment time, and the electrode insulation is external, does not need to dismantle high-voltage insulator's diesel oil granule electrostatic absorption product, and the practicality is strong.

Description

Electrostatic adsorption particle trap with external electrode insulation

The technical field is as follows:

the utility model relates to an air purification field mainly is applied to tail gas aftertreatment field, especially relates to an electrode insulation external electrostatic absorption particle trap.

Background art:

entering the six-state emission stage of road vehicles and the four-state emission stage of non-road vehicles, the whole vehicle post-treatment system inevitably needs to use DPF/GPF products as the best treatment means of PM particles. However, due to the structure of DPF/GPF, various ash, metal chips, sulfate, and other substances generated after active and passive regeneration cannot be discharged from the wall-flow structured DPF/GPF carrier, which gradually increases the exhaust system backpressure, eventually leads to an excessively high exhaust system pressure, and requires frequent shutdown for cleaning the back-blown DPF/GPF carrier, so that the back-blown DPF/GPF carrier has a capturing capability again, and the accumulated backpressure of the DPF/GPF carrier is reduced.

As the accumulated backpressure of the DPF/GPF becomes higher and higher, the overall engine performance is negatively affected or even directly damaged; the shutdown cleaning of the DPF/GPF not only requires a specific cleaning tool but also a long maintenance time for a single cleaning. Diesel engine machinery DPF tail gas particulate matter processing apparatus, the easy emergence of DPF structure is blockked up, and then leads to the engine to draw the jar damage.

Present diesel oil tail gas electrostatic adsorption product in market, its structural design practicality is relatively poor, high voltage power supply terminal and corona wire insert from a dust collection section of thick bamboo tip, high-voltage insulator is fixed in the front, give vent to anger the end cover after, when dismantling the maintenance, must dismantle high-voltage insulator, thereby cause high-voltage insulation part damaged easily, this kind of damage is irreversible, the insulating failure of wholeness that finally leads to the system appears or creepage, thereby the electric capture effect of a whole set of product is inefficacy, outstanding product design must avoid frequently dismantling high-voltage insulator. Like patent number CN201921149267.1 an exhaust purifier, the structural nature is relatively poor, is difficult to dismantle the clearance, when dismantling the maintenance at every turn, all must dismantle high voltage insulator, and the collection dirt is single tube structure very, and the exhaust particulate matter adheres to the area less, and in addition, single corona wire also can cause the inside electric field strength of barrel not enough and influence the particulate matter entrapment effect.

Therefore, a diesel particle electrostatic adsorption product which is convenient to disassemble and can be cleaned without disassembling a high-voltage insulator, the electric field intensity is enhanced, the trapping time is prolonged, and the market demand is met.

The utility model has the following contents:

in order to compensate the technical problem of the existing electrostatic adsorption product for diesel exhaust, the utility model aims to provide an electrode insulation external electrostatic adsorption particle catcher, which enhances the electric field intensity and prolongs the catching time without disassembling the electrostatic adsorption product for diesel particles of a high-voltage insulator.

The technical scheme of the utility model as follows:

the electrostatic adsorption particle trap with the external electrode insulation comprises a dust collection cylinder, wherein an air inlet pipe and an air outlet pipe are respectively arranged at two ends of the dust collection cylinder; and a corona wire is electrically connected between the high-voltage power supply binding posts at the air inlet end and the air outlet end.

The electrostatic adsorption particle trap with the external electrode insulation is characterized in that a plurality of insulation supporting pieces are arranged, the insulation supporting pieces are processed into a barrel shape by adopting ceramics, an inner hole of each insulation supporting piece is connected with the outer wall of a high-voltage power supply wiring terminal, and the outer wall of each insulation supporting piece is fixed with the barrel wall of the dust collection barrel.

The electrode insulation external electrostatic adsorption particle catcher is characterized in that a dust collecting electrode is arranged in the dust collecting cylinder, the dust collecting electrode is of a multi-air-passage honeycomb structure, and the dust collecting electrode is formed on the inner wall of the dust collecting cylinder by adopting multi-cylinder mechanical combination or integral casting.

The electrode insulation external electrostatic adsorption particle catcher is characterized in that the dust collecting electrode is of a multi-air-passage honeycomb structure, the section of each independent air flow passage of the dust collecting electrode is circular or polygonal, and a corona wire penetrates through each independent air flow passage of the dust collecting electrode.

The electrostatic adsorption particle catcher with the external electrode insulation is characterized in that gaps between the dust collecting electrode and the dust collecting cylinder are respectively plugged by a front end plate and a rear end plate, and the front end plate, the rear end plate and the inner wall of the dust collecting cylinder are fixedly used for supporting the dust collecting electrode.

The electrostatic adsorption particle trap with the external electrode insulation is characterized in that the corona wires are one or more of acupuncture wires, sawtooth wires and bur wires, the corona wires are connected with a high-voltage power supply wiring terminal circuit, the corona wires are insulated from a dust collection cylinder through air, and all the high-voltage circuits are at the same potential.

The utility model has the advantages that:

1. when the electrode insulation (the insulation support piece of the high-voltage power supply binding post) is externally maintained and disassembled, the front end cover and the rear end cover of the integral structure of the dust collecting cylinder are disassembled for cleaning, and the integral insulation parts are not required to be disassembled, so that the integral insulation strength and the durability of the assembled parts are easier to protect;

2. the utility model discloses the electrode insulation (the insulating support piece of high voltage power supply terminal) is external, and each spare part module all can be dismantled and changed conveniently, and each junction all is common standard component, need not special tool and dismantles, is convenient for solve each item problem that meets after sale and saves the cost of labor;

3. the utility model can adopt one or more corona wires, when a dust collecting electrode and a plurality of corona wires are adopted, the combination design of the plurality of corona wires and the multi-air passage type dust collecting electrode not only ensures enough field intensity, but also increases the attachment area of particulate matters and improves the particulate matter trapping effect;

4. the utility model discloses a high-pressure electrostatic adsorption technique of through, purifying effect are not less than DPF GPF, and the flue gas that contains the particulate matter can not produce the backpressure through a dust collection section of thick bamboo, even the trap accumulates the carbon quantity and reaches the maximum value, can not influence the complete machine normal operating of installing this equipment after-treatment device yet.

Description of the drawings:

fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the structure of the insulating support member of the present invention.

Fig. 3 is a cross-sectional view of the dust collecting tube of the present invention (the single air flow channel of the dust collecting electrode is regular hexagon).

The specific implementation mode is as follows:

referring to the drawings, embodiments of the present invention will be described in detail below with reference to the accompanying drawings:

the electrode insulation external electrostatic adsorption particle catcher comprises a conductive dust collection cylinder 3, wherein an air inlet pipe 1 and an air outlet pipe 2 are respectively arranged at two ends of the dust collection cylinder 3, the outer walls of the air inlet end and the air outlet end of the dust collection cylinder 3 are respectively provided with an insulation support part 4, the electrode insulation external electrostatic adsorption particle catcher also comprises a high-voltage power supply wiring terminal 5, the high-voltage power supply wiring terminal 5 penetrates through the dust collection cylinder 3, two ends of the high-voltage power supply wiring terminal 5 penetrate through the insulation support part 4 and are supported and fixed through the insulation support part; a corona wire 6 is electrically connected between the high-voltage power supply binding posts 5 at the air inlet end and the air outlet end.

The insulating support piece 4 has a plurality ofly, and insulating support piece 4 adopts ceramic machining to become the tube-shape, and 4 holes of insulating support piece are connected with high voltage power supply terminal outer wall, and 4 outer walls of insulating support piece are fixed mutually with dust collection barrel wall.

The inner wall of the dust collecting cylinder 3 is provided with a dust collecting electrode 7, the dust collecting electrode 7 is of a multi-air-passage honeycomb structure, and the dust collecting electrode 7 is formed on the inner wall of the dust collecting cylinder by adopting multi-cylinder mechanical combination or integral casting.

The dust collecting electrode 7 is of a multi-air-passage honeycomb structure, the section of each independent air flow passage of the dust collecting electrode 7 is circular or polygonal, and a corona wire 6 penetrates through each independent air flow passage of the dust collecting electrode 7; the dust collecting electrode 7 effectively improves the accommodating volume of the particle trapping device, after the inner wall is full of trapped particles, the electrostatic adsorption effect is weakened, but the airflow can normally pass through, the backpressure cannot be generated, and only normal maintenance is needed at the moment.

Gaps between the dust collecting electrode 7 and the dust collecting cylinder 3 are respectively sealed by a front end plate 8 and a rear end plate 9, and the dust collecting electrode 7 is fixedly supported by the front end plate 8, the rear end plate 9 and the inner wall of the dust collecting cylinder 3.

The corona wire 6 adopts acupuncture line, sawtooth line, prickle line, and the quantity is one or many, and the electricity is connected through mechanical fixed mode realization directly or indirectly to corona wire 6 and high voltage power supply terminal 5, and corona wire 6 passes through air insulation with dust collection cylinder 3, and all high voltage circuit all are the equipotential.

The utility model discloses intake pipe 1, dust collection cylinder 3, outlet duct 2 are mechanical detachable connection and sealed in proper order, and the connected mode can be vice bolt-up of flange, staple bolt fastening and any other mechanical connected mode.

The utility model discloses utilize high-voltage static adsorption technique, high-voltage static input voltage absolute value can be for arbitrary magnitude of voltage in 0.4 ~ 10 ten thousand volts.

The utility model discloses high voltage power supply terminal 5 lets in direct current high voltage electricity after, and the particulate matter through near corona electrode is adsorbed on the 7 inner walls of collection dirt utmost point, reaches tail gas purification's effect.

The above description of the present invention is made in conjunction with the accompanying drawings, and it is obvious that the present invention is not limited by the above embodiments, and the method and the technical solution of the present invention are not substantially improved or directly applied to other occasions without improvement, and are all within the protection scope of the present invention.

Claims (6)

1. An electrode insulation external electrostatic adsorption particle catcher comprises a dust collecting barrel, wherein an air inlet pipe and an air outlet pipe are respectively arranged at two ends of the dust collecting barrel; and a corona wire is electrically connected between the high-voltage power supply binding posts at the air inlet end and the air outlet end.

2. The external electrostatic adsorption particle catcher as claimed in claim 1, wherein the plurality of insulating support members are made of ceramic and formed into a cylindrical shape, the inner hole of each insulating support member is connected with the outer wall of the high voltage power supply terminal, and the outer wall of each insulating support member is fixed with the wall of the dust collecting cylinder.

3. The electrode-insulated external electrostatic adsorption particle trap of claim 1, wherein the dust collecting cylinder is internally provided with a dust collecting electrode, the dust collecting electrode is of a multi-air-passage honeycomb structure, and the dust collecting electrode is mechanically assembled by multiple cylinders or integrally cast and formed on the inner wall of the dust collecting cylinder.

4. The electrode-insulated external electrostatic adsorption particle trap according to claim 3, wherein the dust collecting electrode has a multi-air-passage honeycomb structure, each individual air flow passage of the dust collecting electrode has a circular or polygonal cross section, and a corona wire penetrates through each individual air flow passage of the dust collecting electrode.

5. The electrode-insulated external electrostatic adsorption particle trap as claimed in claim 3, wherein the gap between the dust collecting electrode and the dust collecting cylinder is sealed by a front end plate and a rear end plate, respectively, and the front end plate, the rear end plate and the inner wall of the dust collecting cylinder fixedly support the dust collecting electrode.

6. The electrode-insulated external electrostatic adsorption particle trap according to claim 1, wherein the corona wires are one or more of needle-punched wires, sawtooth wires and burred wires, the corona wires are electrically connected with a high-voltage power supply wiring terminal, the corona wires are insulated from the dust collecting cylinder by air, and all the high-voltage circuits are at the same potential.

Images