CN202292940U

CN202292940U - Woodiness dust cyclone electrostatic precipitator

Info

Publication number: CN202292940U
Application number: CN2011203598362U
Authority: CN
Inventors: 那斌; 蒋传生; 周捍东; 丁涛; 徐长妍
Original assignee: Nanjing Forestry University
Current assignee: Nanjing Forestry University
Priority date: 2011-09-23
Filing date: 2011-09-23
Publication date: 2012-07-04
Anticipated expiration: 2021-09-23

Abstract

The utility model discloses a woodiness dust cyclone electrostatic precipitator, which is characterized in that an air inlet pipe is arranged in the tangential direction of the cross section of the upper portion of a metal cylinder to form a tangential air inlet mode, an exhaust pipe is arranged at the top of the metal cylinder, and electric insulation formed between an insulator and between the insulator and the metal cylinder is covered by a top cover. 12 barb type corona electrodes made of reinforcing steel bars are evenly installed in an outer eddy area between the exhaust pipe and the cylinder at equal intervals, an ash bucket is connected with a lower end port of the precipitator, a discharge valve is installed at the lowest portion of the ash bucket, and an inlet flange and an outlet flange are arranged at the end portion of the inlet-outlet port of the precipitator. The woodiness dust cyclone electrostatic precipitator has the advantages of being high in dedusting performance, simple in structure, low in construction cost and the like. Collection efficiency of dust produced by wood processing enterprises reaches 98.5%, and the woodiness dust cyclone electrostatic precipitator also has good dedusting effect on minuteness dust (with grain size smaller than 0.2mum) and can effectively reduce dust pollution of the wood processing enterprises. A power-supply system gives consideration to woodiness dust which has high ratio resistance so as to adopt a power supply mode of pulse power supply.

Description

Wood powder dust devil electrostatic precipitator

Technical field

The utility model relates to a kind of wood powder dust devil electrostatic precipitator,, belong to wood processing industry cleaner field in order to handle the dust that wood processing enterprise produced.

Background technology

The development of China's timber industry is started in last century five, the sixties, has experienced from the middle and later periods of the eighties to begin to introduce successively external complete production line.China's timber industry development at present is rapid, and the dust pollution that can thereupon bring is also more and more serious.This has become the key factor of restriction China timber industry development to a certain extent, therefore also more and more causes people's attention.The cleaner that uses at present is low at efficiency of dust collection, and to the processing defectiveness of fine dust, wooden dust row causes the pollution to atmosphere to atmosphere.

Summary of the invention

What the utility model proposed is a kind of wood powder dust devil electrostatic precipitator; Be used for handling the cyclone electrostatic deduster of the dust that wood processing enterprise produces; Its purpose is intended to overcome prior art and handles the existing above-mentioned defective of dust that wood processing enterprise produces; Dust particle is received the compound action of centrifugal force and electrostatic force and separates in the cyclone electrostatic deduster, effectively reduce wooden dust row, reduce pollution level to atmosphere.

The technical solution of the utility model: it is characterized in that comprising air inlet pipe, blast pipe, insulator, high voltage source, top cover, ash bucket, corona electrode, suction flange, outlet(discharge) flange, blow-off valve; Wherein air inlet pipe is arranged on the metal cylinder on the cross section tangential direction, forms the tangential admission mode; Blast pipe is arranged on the metal cylinder top; The electric insulation that forms between insulator and blast pipe and the metal cylinder is covered by top cover; The barb type corona electrode equidistance that 12 reinforcing bars are made evenly is installed in the outer whirlpool district between blast pipe and the cylindrical shell; Ash bucket links to each other with the lower port of deduster, and blow-off valve is installed in the bottommost of ash bucket, and the electrode grounding that gathers dust, suction flange, outlet(discharge) flange are arranged on the end that deduster is imported and exported.

The major advantage of the utility model: owing to utilize the acting in conjunction of electric field force and centrifugal force, so very high efficiency of dust collection is arranged and fine wooden dust is had good centrifugation; Adopted the pulse power supply technology, overcome the back corona phenomenon that electrostatic precipitator forms in the electric field when collecting high resistivity dust, thereby improved the efficiency of dust collection of electrostatic precipitator high resistivity dust; Because the swirling eddy effect, barrel is dust stratification not basically, can save deashing device.

Description of drawings

Accompanying drawing 1 is a cyclone electrostatic deduster structural front view.

Accompanying drawing 2 is cyclone electrostatic deduster structure vertical views.

Accompanying drawing 3 is structural representations of the suction flange of cyclone electrostatic deduster.

Accompanying drawing 4 is structural representations of the outlet(discharge) flange of cyclone electrostatic deduster.

Accompanying drawing 5 is structural representations of the barb type corona electrode of cyclone electrostatic deduster.

Among the figure 1 is air inlet pipe, the 2nd, blast pipe, the 3rd, the electrode that gathers dust, the 4th, insulator, the 5th, high voltage source, the 6th, top cover, the 7th, ash bucket, the 8th, corona electrode, the 9th, suction flange, the 10th, outlet(discharge) flange, the 11st, blow-off valve.

The specific embodiment

Contrast accompanying drawing

1,2; Its structure be comprise air inlet pipe 1, blast pipe 2, the electrode 3 that gathers dust, insulator 4, high voltage source 5, top cover 6, ash bucket 7, corona electrode 8, suction flange 9, outlet(discharge) flange 10, blow-off valve 11; Wherein air inlet pipe 1 is arranged on the metal cylinder on the cross section tangential direction, forms the tangential admission mode; Blast pipe 2 is arranged on the metal cylinder top; Insulator 4 covers with electric insulation between itself and blast pipe 2 and the metal cylinder and by top cover 6; Barb type corona electrode 8 equidistance that 12 reinforcing bars are made evenly are installed in the outer whirlpool district between blast pipe 2 and the cylindrical shell; High voltage source 5 adopts the pulse power supply technology; Ash bucket 7 links to each other with the lower port of deduster, and blow-off valve 11 is installed in the bottommost of ash bucket, electrode 3 ground connection of gathering dust, and suction flange 9, outlet(discharge) flange 10 are arranged at the end of deduster import and export so that be connected with cleaning shaft.

After high voltage source 5 energisings, it is electric to make that barb type corona electrode 8 gets, and two electrodes just constitute inhomogeneous field, the corona electrode corona discharge.During work; After wooden dust gets into the air inlet pipe 1 of cyclone electrostatic deduster with certain speed through the cleaning shaft tangential, just can carry out chargedly with the air of ionization, charged particle is shifted to cylinder inboard wall under the acting in conjunction of electric field force and centrifugal force; The grit that arrives inwall is fallen ash bucket at air-flow and gravity acting in conjunction lower edge wall; And the major part of swirling eddy is when arriving cone base, then rotates up, after blast pipe 2 discharge.

Contrast accompanying drawing 3,4, it evenly is provided with several bolt mouths on the import and export flange, so that be connected with cleaning shaft, prevent to leak gas in the port.

Contrast accompanying drawing 5; Its structure is to make and form the band steel prickle corona electrode that prickle distributes by reinforcing bar; By High voltage power supply equipment it being supplied power during work makes it produce high pressure at the tip; Thereby make surrounding air produce corona phenomenon, make air ionization so that give powder dust particle charged, thereby realize electrostatic precipitation.

During work, when applying high-tension electricity between two electrodes, the two poles of the earth just form inhomogeneous field, corona electrode 8 corona discharges.This moment, the high voltage electric field at this place accelerated to electronics in the gas to be enough to make near the gas of corona electrode polar curve to reach the degree of ionization, to produce a large amount of ions thus and be attached on the dust completion charged process.Wooden dust gets into when cyclone separator is interior to rotate with air-flow, mainly receives centrifugal force Fc, electrostatic force Fe and the air-flow resistance Ff to grit simultaneously.The action direction of these power is inconsistent, as Fc+Fe>during Ff, charged grit just can reach dust collector pole rapidly, and the grit that arrives inwall is fallen ash bucket at air-flow and gravity acting in conjunction lower edge wall.Gyration airflow makes the axis part of separator form low-pressure area under action of centrifugal force simultaneously.The resistance that advances circle round downwards greater than air-flow during to the air outlet advance resistance of separator top when air-flow like this, and air stream just can be along the axis part of cyclone electrostatic deduster then upwards, is formed rotation inside vortex upwards, and has blast pipe 2 to discharge.

Claims

1. wood powder dust devil electrostatic precipitator; It is characterized in that comprising air inlet pipe, blast pipe, insulator, high voltage source, top cover, ash bucket, corona electrode, suction flange, outlet(discharge) flange, blow-off valve; Wherein air inlet pipe is arranged on the metal cylinder on the cross section tangential direction, forms the tangential admission mode; Blast pipe is arranged on the metal cylinder top; The electric insulation that forms between insulator and blast pipe and the metal cylinder is covered by top cover; The barb type corona electrode equidistance that 12 reinforcing bars are made evenly is installed in the outer whirlpool district between blast pipe and the cylindrical shell; Ash bucket links to each other with the lower port of deduster, and blow-off valve is installed in the bottommost of ash bucket, and the electrode grounding that gathers dust, suction flange, outlet(discharge) flange are arranged on the end that deduster is imported and exported.

2. wood powder dust devil electrostatic precipitator according to claim 1 is characterized in that on the import and export flange, evenly several being set so that be connected, prevent the bolt mouth in port gas leakage with cleaning shaft.

3. wood powder dust devil electrostatic precipitator according to claim 1 is characterized in that corona electrode made and formed the band steel prickle corona electrode that prickle distributes by reinforcing bar.