CN210045400U

CN210045400U - Energy-saving emission-reduction electrostatic dust collector capable of preventing secondary dust emission

Info

Publication number: CN210045400U
Application number: CN201920117290.6U
Authority: CN
Inventors: 王艳媛; 李春祥; 赖容泉; 李良芳; 黄文�
Original assignee: Fujian Xinlong Environmental Ltd By Share Ltd
Current assignee: Fujian Xinlong Environmental Ltd By Share Ltd
Priority date: 2019-01-24
Filing date: 2019-01-24
Publication date: 2020-02-11
Anticipated expiration: 2029-01-24

Abstract

An energy-saving emission-reducing electrostatic dust collector capable of preventing secondary dust emission, which relates to the technical field of dust removal devices. It contains the dust removal barrel, the dust removal barrel lower extreme is equipped with the ash bucket, the upper and lower part is equipped with the gallows respectively in the dust removal barrel, be equipped with a plurality of anode plate and the negative pole corona wire that are parallel to each other between two gallows, the anode plate cross section is a plurality of hexagon and piles up the honeycomb of formation, be equipped with a plurality of on the dust removal barrel outer wall and shake ash removal device, dust removal barrel outer wall lower part is equipped with the air-supply line, the air-supply line central line is tangent with the dust removal barrel, the tangent line transition is personally submitted with the dust removal barrel outward appearance to the barrel outside of the air-supply line, dust removal barrel top center is. The waste gas generates spiral airflow through the air inlet pipe and the flow distribution plate on the air inlet pipe, so that the dust removal efficiency is improved; the honeycomb structure of anode plate can lead the dust, prevents the secondary ash raising, has further improved dust collection efficiency.

Description

Energy-saving emission-reduction electrostatic dust collector capable of preventing secondary dust emission

Technical Field

The utility model relates to a dust collector technical field, concretely relates to can prevent to clean energy saving and emission reduction electrostatic precipitator of secondary ash raising.

Background

The working principle of the electrostatic dust collector is that a high-voltage electric field is utilized to ionize smoke, and dust charges in airflow are separated from the airflow under the action of the electric field. The cathode is made of metal wires with different cross-section shapes, and is called a discharge electrode. The positive electrode is made of metal plates with different geometric shapes, and is called a dust collecting electrode. The performance of an electrostatic precipitator is influenced by three factors, namely the nature of the dust, the equipment construction and the flow rate of the flue gas. The specific resistance of the dust is an index for evaluating the conductivity, and has a direct influence on the dust removal efficiency. The specific resistance is too low, and dust particles are difficult to retain on the dust collecting electrode, so that they are returned to the air flow. The specific resistance is too high, the dust particle charges reaching the dust collecting electrode are not easy to discharge, and the local breakdown and discharge phenomena are generated by forming a voltage gradient between dust layers. Both of these cases cause a decrease in dust removal efficiency.

At present, a strip-shaped dust collecting polar plate of a traditional electrostatic dust collector as a dust collecting plate is in a flat plate shape, and a large-range corona area is difficult to form due to the limitation of the plate shape in the working process, so that the dust collecting effect is influenced; and in the process of dust removal by vibration, because the strip-shaped dust collecting polar plate is flat, dust falls down randomly without guidance in the process of dust removal, secondary dust raising is caused, and the influence on the dust removal efficiency is serious.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art's defect with not enough, provide an energy saving and emission reduction electrostatic precipitator that can prevent to clean secondary raise dust, it can solve traditional electrostatic precipitator deashing in-process dust will fall under the non-oriented condition at will, causes the secondary to raise the ash, influences serious defect to dust collection efficiency.

In order to achieve the above purpose, the utility model adopts the following technical scheme: it contains the dust removal barrel, the lower extreme of dust removal barrel is provided with the ash bucket, and the upper and lower part is provided with the gallows respectively in the dust removal barrel, be provided with the anode plate that a plurality of was parallel to each other and cathode corona wire between two gallows, the cross section of anode plate is a plurality of hexagon and piles up the cellular form that forms, be provided with a plurality of on the outer wall of dust removal barrel and shake ash removal device, the lower part of dust removal barrel outer wall is provided with the air-supply line, the central line and the dust removal barrel of air-supply line are tangent, and the tangent line transition is personally submitted with the outward appearance of dust removal barrel to the air-supply line outside barrel, the top center of dust removal barrel is provided with the air outlet.

Furthermore, the cross-section of the air inlet pipe is a rectangular surface, the area of the rectangular surface of the air inlet pipe from the inlet section to the outlet section is gradually increased, and the air inlet pipe is gradually inclined downwards from the inlet section to the outlet section.

Furthermore, the outer surface of the air inlet pipe outside barrel and the outer surface of the dust removal barrel are in 250-degree tangent line transition with 300-degree tangent line, and a plurality of flow distribution plates are uniformly arranged in the air inlet pipe.

Furthermore, the hanger is fixed in the dust removal barrel through an upper supporting beam and a lower supporting beam which are welded in the dust removal barrel.

Furthermore, a material level meter inserted into the ash hopper is arranged in the middle of the ash hopper, an ash outlet is formed in the bottom of the ash hopper, and a discharge valve is arranged on the ash outlet.

The utility model discloses a theory of operation: when the dust removing device works, waste gas enters the dust removing cylinder body through the air inlet pipe, the waste gas is uniformly divided through the flow dividing plate when passing through the air inlet pipe, the air inlet pipe is obliquely and downwards arranged, the cross section of the air inlet pipe is gradually increased, the air speed is reduced, dust with larger particles directly falls into the dust hopper under the action of gravity, and dust with smaller particles uniformly and spirally enters the dust removing cylinder body, so that the dust removing efficiency is improved; the cathode corona wire generates a high-voltage electric field to ionize air, dust with smaller particles is charged, moves to the opposite electrode under the action of the electric field force and finally gathers on the inner wall of the anode plate, the dust on the inner wall of the anode plate is knocked down by the rapping dust cleaning device, the dust is guided along a honeycomb structure formed by a plurality of hexagons in the anode plate to fall into a dust hopper, secondary dust raising is avoided, and the dust removal efficiency is improved; the gas of detach dust gets into gas purification device through the air outlet that sets up at dust removal barrel top and detaches after harmful gas and discharge, and the charge level indicator on the ash bucket is connected with the alarm electricity, and when the dust in the ash bucket reaches the charge level timing, the alarm will send alarm instruction, opens the bleeder valve and discharges the dust from the discharge gate.

After the technical scheme is adopted, the utility model discloses beneficial effect does: the dust remover has simple structure and reasonable design, and waste gas generates spiral airflow through the air inlet pipe and the flow distribution plate on the air inlet pipe, thereby effectively improving the dust removing efficiency; the honeycomb structure of anode plate can lead the dust, prevents the secondary raise dust, further improvement the efficiency of removing dust.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is a schematic cross-sectional view of an anode plate of the present invention;

fig. 4 is a schematic structural view of the flow distributing plate of the present invention.

Description of reference numerals: the device comprises a dust removal cylinder body 1, an ash hopper 2, a hanging bracket 3, an anode plate 4, a cathode corona wire 5, a rapping dust removal device 6, an air inlet pipe 7, an air outlet 8, an air guide pipeline 9, an induced draft fan 10, a gas purification device 11, a flow distribution plate 12, an upper support beam 13, a lower support beam 14, a material level meter 15 and a discharge valve 16.

Detailed Description

Referring to fig. 1 to 4, the technical solution adopted by the present embodiment is: the dust removal device comprises a dust removal barrel body 1, wherein an ash bucket 2 is arranged at the lower end of the dust removal barrel body 1, hanging frames 3 are respectively arranged at the upper part and the lower part in the dust removal barrel body 1, the hanging frames 3 are fixed in the dust removal barrel body 1 through an upper supporting beam 13 and a lower supporting beam 14 which are welded in the dust removal barrel body 1, a plurality of anode plates 4 and cathode corona wires 5 which are parallel to each other are arranged between the two hanging frames 3, the cross section of each anode plate 4 is a honeycomb shape formed by stacking a plurality of hexagons, a plurality of rapping dust cleaning devices 6 are arranged on the outer wall of the dust removal barrel body 1, an air inlet pipe 7 is arranged at the lower part of the outer wall of the dust removal barrel body 1, the central line of the air inlet pipe 7 is tangent to the dust removal barrel body 1, the barrel body outside the air inlet pipe 7 and the outer surface of, and the air-supply line 7 is by the entrance section to the setting of export section downward sloping gradually, and the section crescent and the slope of air-supply line 7 set up downwards, can make the wind speed decline when waste gas gets into to make great granule dust directly quick fall into in ash bucket 2 under the action of gravity, the top center of dust removal barrel 1 is provided with air outlet 8, air outlet 8 is connected with induced duct 9, induced duct 9 passes through draught fan 10 and is connected with gas purification device 11.

Barrel and the dust removal barrel 1 outside 7 outside of air-supply line are 250 and 300 degree tangent line transition, and during the concrete implementation, barrel and the dust removal barrel 1 outside of air-supply line 7 are 270 degree tangent line transition, evenly are provided with a plurality of flow distribution plate 12 in the air-supply line 7, can realize the dispersion through flow distribution plate 12 and gather dust to improve dust collection efficiency.

The middle part of ash bucket 2 is provided with the charge level indicator 15 that inserts 2 insides of ash bucket, and the bottom of ash bucket 2 is provided with the ash hole, be provided with bleeder valve 16 on the ash hole, when the dust in ash bucket 2 reached charge level indicator 15, the alarm will send alarm indication, opens bleeder valve 16 and discharges the dust from the discharge gate.

In specific implementation, waste gas enters the dedusting cylinder 1 through the air inlet pipe 7, when the waste gas passes through the air inlet pipe 7, the waste gas is uniformly distributed through the flow distribution plate 12, the air inlet pipe 7 is obliquely and downwards arranged, the section of the air inlet pipe is gradually increased, the air speed is reduced, dust with larger particles directly falls into the dust hopper 2 under the action of gravity, and dust with smaller particles uniformly enters the dedusting cylinder 1 in a spiral shape, so that the dedusting efficiency is improved; the cathode corona wires 5 generate a high-voltage electric field to ionize air, dust with smaller particles is charged and moves to opposite electrodes under the action of the electric field force and finally gathers on the inner wall of the anode plate 4, the dust on the inner wall of the anode plate 4 is knocked down by the rapping dust cleaning device 6, the dust is guided along a honeycomb structure formed by stacking a plurality of hexagons in the anode plate 4 to fall into the dust hopper 2, secondary dust raising is avoided, and the dust removal efficiency is improved; the gas of detach dust gets into gas purification device 11 through setting up 8 air outlets at the top of dust removal barrel 1 and discharges after detaching harmful gas, and charge level indicator 15 on the ash bucket 2 is connected with the alarm electricity, and when the dust in the ash bucket 2 reached charge level indicator 15, the alarm will send out alarm instruction, opens bleeder valve 16 and discharges the dust from the discharge gate.

The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a can prevent to clean energy saving and emission reduction electrostatic precipitator of secondary ash raising which characterized in that: it contains the dust removal barrel, the lower extreme of dust removal barrel is provided with the ash bucket, and the upper and lower part is provided with the gallows respectively in the dust removal barrel, be provided with the anode plate that a plurality of was parallel to each other and cathode corona wire between two gallows, the cross section of anode plate is a plurality of hexagon and piles up the cellular form that forms, be provided with a plurality of on the outer wall of dust removal barrel and shake ash removal device, the lower part of dust removal barrel outer wall is provided with the air-supply line, the central line and the dust removal barrel of air-supply line are tangent, and the tangent line transition is personally submitted with the outward appearance of dust removal barrel to the air-supply line outside barrel, the top center of dust removal barrel is provided with the air outlet.

2. The energy-saving emission-reducing electrostatic precipitator capable of preventing secondary dust emission from being swept according to claim 1, which is characterized in that: the cross-section of air-supply line is the rectangle face, and the air-supply line is by the inlet section to the rectangle face area grow gradually of export section, and the air-supply line is by the inlet section to export section slope setting downwards gradually.

3. The energy-saving emission-reducing electrostatic precipitator capable of preventing secondary dust emission from being swept according to claim 1, which is characterized in that: the outer surface of the air inlet pipe and the outer surface of the dust removal cylinder are in 250-degree tangent line transition, and a plurality of flow distribution plates are uniformly arranged in the air inlet pipe.

4. The energy-saving emission-reducing electrostatic precipitator capable of preventing secondary dust emission from being swept according to claim 1, which is characterized in that: the hanger is fixed in the dust removal barrel through an upper supporting beam and a lower supporting beam which are welded in the dust removal barrel.

5. The energy-saving emission-reducing electrostatic precipitator capable of preventing secondary dust emission from being swept according to claim 1, which is characterized in that: the middle part of ash bucket is provided with the charge level indicator who inserts the inside ash bucket, and the bottom of ash bucket is provided with the ash hole, be provided with the bleeder valve on the ash hole.