CN212856183U

CN212856183U - Electric dust remover

Info

Publication number: CN212856183U
Application number: CN202020862922.4U
Authority: CN
Inventors: 廖世平
Original assignee: Wuhan Wuan Environmental Protection Technology Co ltd
Current assignee: Wuhan Wuan Environmental Protection Technology Co ltd
Priority date: 2020-05-21
Filing date: 2020-05-21
Publication date: 2021-04-02
Anticipated expiration: 2030-05-21

Abstract

The utility model relates to an electric dust remover. The electric dust collector comprises a shell, a plurality of dust collecting electrodes and discharge electrodes, wherein the dust collecting electrodes and the discharge electrodes are arranged in the shell along the air inlet direction of the shell, and each discharge electrode is positioned between two dust collecting electrodes; the electrode of gathering dust includes fixed frame and a plurality of with fixed frame fixed connection just follows the angle steel shape that the parallel interval of air inlet direction of casing, in bank were arranged gathers dust the board, the angle steel shape gather dust the opening direction of board with the air inlet direction of casing is opposite. Compared with the prior art, the utility model discloses an effectual problem of overcoming conventional electrostatic precipitator easy secondary poplar dirt of electrostatic precipitator has improved dust removal effect. The utility model discloses an angle steel shape in the electrostatic precipitator gathers dust the both edges of board respectively from last to having insulating coating down, avoided angle steel shape to gather dust the board edge deposition and take place back corona and spark discharge with the prickle line.

Description

Electric dust remover

Technical Field

The utility model belongs to the technical field of dust collecting equipment, especially, relate to an electric dust remover.

Background

The electrostatic dust collection is one of gas dust collection methods, dust-containing gas is electrically separated when passing through a high-voltage electrostatic field, and dust particles and negative ions are combined to be charged negatively and then deposited on the surface of an angle iron-shaped dust collection plate with a positive pole. Electrostatic dust collection is a popular technology and widely applied to various industrial technical fields, and the conventional electrostatic dust collector for industry is mainly a plate horizontal type dust collector.

A plurality of dust collecting electric fields connected in series are arranged in the conventional electrostatic dust collector, each electric field consists of a plurality of rows of anode angle steel-shaped dust collecting plates and discharge electrodes, and each electric field is provided with a direct-current high-voltage power supply device and a rapping dust-cleaning system. When high-voltage static electricity is applied between the angle iron-shaped dust collecting plate and the discharge electrode, smoke dust entering the electrostatic dust collector rapidly gets negative electricity under the action of the high-voltage electrostatic field and tends to the angle iron-shaped dust collecting plate, and is adsorbed by the angle iron-shaped dust collecting plate. When the dust adsorbed on the surface of the angle iron-shaped dust collecting plate reaches a certain thickness, the dust is vibrated to fall off the angle iron-shaped dust collecting plate through a vibration dust cleaning mechanism.

The specific resistance value is found to be less than 10⁴After the ohm centimeter dust is collected by the anode angle iron-shaped dust collecting plate, negative charges can be rapidly released, and the unique physical phenomenon that positive charges on the anode are absorbed and bounce towards the cathode direction can occur. At present, the conventional electrostatic dust collector can not effectively collect fine dust with pm less than 2.5 and has specific resistance less than 10⁴Ohm centimeter dust and specific resistance more than 10¹²Ohm centimeter of dust, because of the serious secondary flying of dust. The dust content concentration of the outlet is greatly higher than the regulation of the current environmental protection standard and the requirement of ultra-low emission, which is also the important reason that the application range of the conventional plate horizontal electrostatic dust collector is limited.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an electric dust remover to solve conventional electric dust remover because of can not effectively catch fine dust, specific resistance below pm2.5 are less than 10⁴Ohm centimeter dust and specific resistance more than 10¹²Ohm centimeter of dust, and the technical problem of secondary flying of the dust is easy to occur.

The utility model discloses an electric dust remover's technical scheme is:

an electric dust collector comprises a shell, a plurality of dust collecting electrodes and discharge electrodes, wherein the dust collecting electrodes and the discharge electrodes are arranged in the shell along the air inlet direction of the shell, and each discharge electrode is positioned between two dust collecting electrodes;

the electrode of gathering dust includes fixed frame and a plurality of with fixed frame fixed connection just follows the angle steel shape that the parallel interval of air inlet direction of casing, in bank were arranged gathers dust the board, the angle steel shape gather dust the opening direction of board with the air inlet direction of casing is opposite.

As a further improvement to the technical scheme, the distances between two adjacent angle-shaped dust collecting plates are equal.

As a further improvement to the technical scheme, the upper end of the angle iron-shaped dust collecting plate extends to the upper end of the shell, and the lower end of the angle iron-shaped dust collecting plate extends to the lower end of the shell.

As a further improvement to the technical scheme, the angle iron-shaped dust collecting plate comprises a first edge and a second edge which are integrally formed, and an included angle between the first edge and the second edge is an acute angle.

As a further improvement to the above technical solution, the edges of the first and second sides are provided with insulating coatings from top to bottom.

As a further improvement to the above technical solution, the housing is provided with an air inlet and an air outlet, and the air inlet and the air outlet are arranged coaxially.

As a further improvement to the technical scheme, at least two dust collecting chambers communicated and connected in series are arranged in the shell, and a plurality of rows of dust collecting electrodes and discharge electrodes which are arranged in parallel are respectively arranged in the dust collecting chambers.

As a further improvement to the above technical scheme, the electrostatic precipitator is still including the deashing system that shakes of shaking angle iron shape board that gathers dust, the lower extreme of casing is equipped with the inside intercommunication of casing, is used for holding the angle iron shape dust collecting plate dust hopper that drops the dust.

The utility model provides an electric dust remover compares in prior art, and its beneficial effect lies in:

the utility model discloses an electrostatic precipitator usesWhen smoke and dust enter the shell along with the airflow, air is ionized by a high-voltage electrostatic field formed by the dust collecting electrode and the discharge electrode, a large amount of negative ions are formed and rapidly attached to the surfaces of smoke and dust particles. Under the action of the thrust of airflow and the driving force of a high-voltage electrostatic field for pushing negatively charged particles to an anode dust collection row, charged dust in the electric field moves to the insides of all the angle-shaped dust collection plates, is collected between the angle-shaped dust collection plates, is shielded by the angle-shaped dust collection plates, is not positioned between a cathode electric field and an anode electric field, and contains fine dust with the particle size of less than 2.5 pm and the specific resistance of less than 10⁴Ohm centimeter dust and specific resistance more than 10¹²The dust of ohm centimeter can not bounce, thus avoiding the problem of secondary dust. Meanwhile, the edge of the angle iron-shaped dust collecting plate is coated with a temperature-resistant and wear-resistant insulating layer, so that dust is less prone to being accumulated under the scouring of air flow, and the angle iron-shaped dust collecting plate is less prone to generating back corona and spark phenomena with barbed wires, so that the high-voltage power supply stable operation of an electric field is ensured. Compared with the prior art, the utility model discloses an effectual problem of overcoming conventional electrostatic precipitator easy secondary poplar dirt of electrostatic precipitator has improved dust removal effect.

The utility model discloses an angle steel shape in the electrostatic precipitator gathers dust the both edges of board respectively from last to having insulating coating down, has increased substantially angle steel shape and has gathered dust the dielectric strength of board, has avoided angle steel shape to gather dust the board marginal deposition of board and has taken place back corona and spark discharge with the prickle line.

Drawings

FIG. 1 is a front view of an electric precipitator of the present invention;

FIG. 2 is a top view of the electric dust collector of the present invention;

FIG. 3 is an enlarged view at A in FIG. 1;

FIG. 4 is an enlarged view at B in FIG. 2;

in the figure: 1. a housing; 2. an air inlet; 3. an air outlet; 4. a dust collection chamber; 5. a second dust collection chamber; 6. an ash hopper; 7. an angle iron-shaped dust collecting plate; 8. an insulating coating; 9. bur lines; 10. dust; 11. a rotating shaft; 12. vibrating and hammering; 13. a rapping bar; 14. a connecting rod; 15. and (5) rapping the anvil.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

The utility model discloses a specific embodiment of electrostatic precipitator, as shown in fig. 1 to 4, including casing 1, a plurality of electrode and the discharge electrode that gathers dust.

Specifically, the housing 1 has an inner cavity, and the inner cavity is divided into two dust collecting chambers, namely a first dust collecting chamber 4 and a second dust collecting chamber 5, wherein the first dust collecting chamber 4 and the second dust collecting chamber 5 have equal volumes in the embodiment. Of course, in other embodiments, only one dust collecting chamber or three or more dust collecting chambers may be provided in the housing, and the volumes of the first dust collecting chamber and the second dust collecting chamber may be different. The front end and the rear end of the shell 1 are respectively of a conical structure protruding outwards, and preferably, the section of the conical structure is trapezoidal. An air inlet 2 communicated with the inner cavity is formed in the middle of the front end conical structure of the shell 1, and an air outlet 3 communicated with the inner cavity is formed in the middle of the rear end conical structure of the shell 1. The size of the air inlet 2 is the same as that of the air outlet 3, and the air inlet 2 and the air outlet 3 are arranged coaxially.

In this embodiment, the dust collecting electrodes and the discharge electrodes are both installed in the first dust collecting chamber 4 and the second dust collecting chamber 5 along the axial lines of the air inlet 2 and the air outlet 3, and the relationship between the number of the dust collecting electrodes and the number of the discharge electrodes in the first dust collecting chamber 4 and the second dust collecting chamber 5 satisfies that one discharge electrode is arranged between the two dust collecting electrodes. The discharge electrode comprises a plurality of vertical supporting rods 9 which are arranged in parallel at equal intervals and barbed wires 9 which are fixedly connected to the supporting rods in a one-to-one correspondence mode, and the barbed wires 9 are connected with each other and connected with the negative pole of the power supply.

In this embodiment, the dust collecting electrode includes a fixed frame and a plurality of angle-shaped dust collecting plates 7, the angle-shaped dust collecting plates 7 are in an angle-shaped structure, and the opening direction of the angle-shaped dust collecting plates 7 deviates from the air inlet direction of the housing. The angle iron-shaped dust collecting plates 7 are arranged in parallel at intervals in the air inlet direction of the shell, and the distance between every two adjacent angle iron-shaped dust collecting plates 7 is equal. The upper end of the angle iron-shaped dust collecting plate 7 extends to the upper end of the shell, and the lower end of the angle iron-shaped dust collecting plate extends to the lower end of the shell. The angle iron-shaped dust collecting plate 7 comprises a first edge and a second edge which are integrally formed, and an included angle between the first edge and the second edge is an acute angle. The edge of the first edge, which is far away from the second edge, is coated with the insulating coating 8 from top to bottom.

In the embodiment, in order to clean the dust 10 on the angle-shaped dust collecting plate 7, a rapping dust-cleaning mechanism is arranged on the shell 1. In order to collect dust 10 falling from the angle-shaped dust collecting plate 7, the lower end of the housing 1 is provided with two dust hoppers 6 communicating with the first dust collecting chamber 4 and the second dust collecting chamber 5, respectively. The rapping dust-cleaning mechanism comprises a rotating shaft 11, a rapping hammer 12, a rapping rod 13 and a rapping anvil 15 fixed on any angle-shaped dust collecting plate 7 through a connecting rod 14, wherein one end of the rapping rod 13 is hinged with the rotating shaft 11, and the other end of the rapping rod is fixedly connected with the rapping hammer 12. By regularly operating the rotating shaft 11, the rotating shaft 11 drives the hinged rapping hammer 12 to leave the rapping anvil 15 for a short distance, and then the rapping anvil 15 is struck back, so that the angle iron-shaped dust collecting plate 7 is vibrated, and dust 10 accumulated on the angle iron-shaped dust collecting plate 7 falls into the ash hopper 6 below in a lump.

The utility model discloses an electric dust collector uses, and in the smoke and dust got into the casing along with the air current, the air was by the high voltage electrostatic field ionization of gathering dust electrode and discharge electrode formation, formed a large amount of anions and rapid surface attached to the smoke and dust particle. Under the action of the thrust of airflow and the driving force of a high-voltage electrostatic field for pushing negatively charged particles to the anode dust collection row, the charged dust 10 moves to the inner parts of all the angle iron-shaped dust collection plates 7 and is collected by the angle iron-shaped dust collection plates 7. The dust 10 is trapped between the angle-steel-shaped dust collecting plates 7, is shielded by the angle-steel-shaped dust collecting plates 7, is not positioned between a cathode electric field and an anode electric field, and contains fine dust 10 with pm less than 2.5 and specific resistance less than 10⁴Ohm centimeter of dust 10 and specific resistance more than 10¹²The dust 10 of ohm centimeter can not bounce, thus avoiding the problem of secondary dust. Meanwhile, dust is not easy to accumulate on the edge of the angle iron-shaped dust collecting plate 7 under the scouring of air flow, and the angle iron-shaped dust collecting plate 7 is not easy to generate back corona and spark phenomena with barbed wires, so that the high-voltage power supply stable operation of an electric field is ensured.

The utility model provides an electric dust remover compares in prior art, has following advantage: the utility model discloses an effectual problem of overcoming the easy secondary poplar dirt of conventional electrostatic precipitator of electrostatic precipitator has improved dust removal effect.

The utility model discloses an angle steel shape in the electrostatic precipitator gathers dust board 7's both edges respectively from last to having insulating coating 8 down, has increased substantially angle steel shape and has gathered dust board 7's dielectric strength, avoided angle steel shape gather dust board 7 edge deposition and take place back corona and spark discharge with the prickle line.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. An electric dust collector comprises a shell, a plurality of dust collecting electrodes and discharge electrodes, wherein the dust collecting electrodes and the discharge electrodes are arranged in the shell along the air inlet direction of the shell, and each discharge electrode is positioned between two dust collecting electrodes; the method is characterized in that:

2. An electric precipitator according to claim 1, wherein: the angle iron-shaped dust collecting plate comprises a first edge and a second edge which are integrally formed, and an included angle between the first edge and the second edge is an acute angle.

3. An electric precipitator according to claim 2, wherein: and the edges of the first edge and the second edge are provided with insulating coatings from top to bottom.

4. An electric precipitator according to claim 1, wherein: the shell is provided with an air inlet and an air outlet, and the air inlet and the air outlet are arranged coaxially.

5. An electric precipitator according to claim 1, wherein: at least two dust collecting chambers communicated and connected in series are arranged in the shell, and a plurality of rows of dust collecting electrodes and discharge electrodes which are arranged in parallel are respectively arranged in the dust collecting chambers.

6. An electric precipitator according to claim 1, wherein: the electrostatic precipitator is still including being used for rapping the angle steel shape and gathering dust the deashing system of shaking of board, the lower extreme of casing is equipped with the inside intercommunication of casing, is used for holding the angle steel shape and gathers dust the ash bucket of the board dust that drops.