CN2338103Y

CN2338103Y - Large scale, high effect, precision and forced air current type separating and sorting machine

Info

Publication number: CN2338103Y
Application number: CN 98230862
Authority: CN
Inventors: 石峰; 管国华
Original assignee: HUNAN ELECTRICITY FLYASH DEVELOPMENT Co Ltd
Current assignee: HUNAN ELECTRICITY FLYASH DEVELOPMENT Co Ltd
Priority date: 1998-06-05
Filing date: 1998-06-05
Publication date: 1999-09-15
Anticipated expiration: 2008-06-05

Abstract

The utility model relates to a large scale, high effect, precision and forced air current type separating and sorting machine, which has the structures that a rotary shaft is connected and transmitted by a speed regulating motor; the lower end of the rotary shaft is provided with a fixed blade wheel, and a feed opening and the outlet pipe of the fine ash are arranged on a first stage separating and sorting chamber. A primary air inlet and a secondary air inlet are respectively arranged on both sides of the first stage separating and sorting chamber; a conical bucket is fixed onto the internal wall of the casing of the second stage separating and sorting chamber, and the lower end of the second stage separating and sorting chamber is the outlet pipe of the coarse ash. The utility model has the advantages of reasonable design and favorable property with integration of multiple functions, such as the large scale, the high effect, the precision, etc.

Description

Large-scale high-efficiency and precision forced draft grader

The utility model relates to a kind of gas flow sizing machine in the super fine powder classifier tool.

Existing domestic and international gas flow sizing machine, general using eddy current or impeller, make powder in grader by fluid inertia and gravity effect, the realization thickness is separated, but this class grader or treating capacity are little, and perhaps efficient is low, yield rate often has only about 40%, perhaps classification inaccuracy, also do not have so far a kind of classification function make large-scale, as treating capacity 20T/H-40T/H, efficient, as classification efficiency reach more than 80%, accurate three is incorporated into one, can not satisfy the needs on the industrial production.

The purpose of the utility model aims to provide and a kind of high throughput, high efficiency, pinpoint accuracy is incorporated into one, rational in infrastructure, function admirable, widely used large-scale high-efficiency and precision forced draft grader.

Technical solution of the present utility model is: this large-scale high-efficiency and precision forced draft grader has buncher, turning cylinder, the one-level grading room, the secondary grading room, charging aperture, a wind inlet, the secondary wind inlet, impeller, the awl bucket, the cinder outlet, thin grey outlet, turning cylinder connects transmission by buncher, the turning cylinder lower end installs and fixes impeller, charging aperture is installed in above the one-level grading room, a wind inlet and secondary wind inlet branch is listed in the both sides of one-level grading room and be oriented in a tangential direction to install with the grading room housing and be communicated with, the fixing several cramp bars of the following welding of awl bucket, the cramp bar lower end is fixed on the inner walls of secondary grading room, secondary grading room lower end is the cinder outlet, thin grey outlet is installed in above the one-level grading room, and with the one-level grading room in connect.

The utility model by blower fan is drawn into one-level grading room at feed pipe primary mixture, in grading room, fully disperse, because impeller and air-flow all produce powerful centrifugal action, coarse granule is thrown to the classification locular wall, fine powder passes the impeller blade gap with air-flow, enter tornado collection device by the thin grey outlet outlet in top, coarse granule in awl bucket place and secondary grading room owing to the effect of secondary wind, carry out scalping again, wherein fine grained is sent from top, coarse granule then falls into the cinder storehouse along secondary classification locular wall, therefore, the utility model is compared with prior art, has high throughput, high efficiency, pinpoint accuracy three big functions are concentrated and are incorporated into one, this grader can be with 200,000 when being applied to large-scale coal-fired power plant coal ash sorting engineering, 300,000,600,000 kilowatts of coal fired power generation units are supporting, per hour can reach to handle 15 tons to 40 tons high throughput effect.Because the utility model classification efficiency height, therefore when handling flyash, yield rate is higher, output capacity is bigger, required particle diameter flyash through the utility model accurately sub-elects can reach the effect of taking off charcoal, and loss on ignition can reduce 1-4 percentage point in the flyash, in sum, the utlity model has following advantage and effect:

1, advanced design, novel structure adopts forced vortex to regulate, and regulating measure is stable, and is reliable;

2, the device processes capacity is big, and per hour treating capacity is the first in the nation at present, reaches per hour 20-40T;

3, can take off charcoal to dry method and grading combines, reduce the loss on ignition 1-4 percentage point in the flyash;

4, adopt the method for operation of negative pressure, closed cycle, can prevent effectively that dust from escaping, free from environmental pollution;

5, high temperature resistant, the corrosion-resistant abrasion coating of the equal coated of all damageable zones has prolonged service life of equipment;

6, adopt efficient cyclone separator, improved classification efficiency, classification efficiency can reach 70-90%.

Fig. 1 is the utility model structural representation.

Below in conjunction with accompanying drawing the utility model is specified: this large-scale high-efficiency and precision forced draft grader has buncher 1, turning cylinder 2, one-level grading room 3, secondary grading room 4, charging aperture 5, a wind inlet 6, secondary wind inlet 7, impeller 8, awl bucket 9, cinder outlet 10, thin grey outlet 11, turning cylinder 2 connects transmission by buncher 1, turning cylinder 2 lower ends install and fix impeller 8, charging aperture 5 is installed in above the one-level grading room 3, wind inlet 6 and secondary wind inlet were listed in the both sides of one-level grading room 3 in 7 minutes, and be oriented in a tangential direction to install with grading room 3 housings and be communicated with, the fixing several cramp bars 12 of awl bucket 9 following welding, cramp bar 12 lower ends are fixed on the inner walls of secondary grading room 4, secondary grading room 4 lower ends are cinder outlet 10, thin grey outlet 11 is installed in above the one-level grading room 3, and with one-level grading room 3 in are communicated with, awl struggles against and also has adjustable gap between 8 tops and the turning cylinder 2.

Claims

1, a kind of large-scale high-efficiency and precision forced draft grader, it is characterized in that having buncher (1), turning cylinder (2), one-level grading room (3), secondary grading room (4), charging aperture (5), a wind inlet (6), secondary wind inlet (7), impeller (8), awl bucket (9), cinder outlet (10), thin grey outlet (11), turning cylinder (2) connects transmission by buncher (1), turning cylinder (2) lower end installs and fixes impeller (8), charging aperture (5) is installed in above the one-level grading room (3), a wind inlet (6) and secondary wind inlet (7) divide the both sides that are listed in one-level grading room (3), and be oriented in a tangential direction to install with grading room (3) housing and be communicated with, the fixing several cramp bars (12) of the following welding of awl bucket (9), cramp bar (12) lower end is fixed on the inner walls of secondary grading room (4), secondary grading room (4) lower end is cinder outlet (10), thin grey outlet (11) is installed in above the one-level grading room (3), and is communicated with one-level grading room (3) is interior.