CN2039596U - New pattern high efficient selecting powder device - Google Patents

Abstract

The utility model discloses a high efficient selecting powder device suitable for the cement industry, the chemical industry, the grain industry and the medicine industry. An annular air duct with secondary air and a kuppe are arranged at a separation part to clean the harsh powder and make the fine powder enter a swirling flow field through the kuppe, thus improving the grading grade. A dispersal cylinder in about 2-10m is arranged at a dispersed part. The adjustable distance of the dispersion cone of the abutting cones, a parabolic body or a streamlined body and the spillage board is 2-200 mm, and the dispersing ability of the material is improved. The utility model is used in the cement industry, and the selecting powder efficiency is improved by 10-30%, and the output of the grinding mill is improved by 20-30%. If 10% cement plant cement mills of the country use the utility model, the electric charge can be saved for more than ten million yuan a year, and the year saving investment can reach 70000 thousand yuan.

Description

New pattern high efficient selecting powder device

The utility model is a kind of new and effective powder concentrator

At present can produce specific area for general adaptation is 3000cm ²The ordinary cement of/g, slag cements, R type high-early (strength) cement, silicate quick-hardening cement, can produce specific area again is 5000-6000cm ²The high-strength special type cement of/g, even more ultra-fine product are all falling over each other to develop new and effective powder concentrator both at home and abroad, in the hope of overcoming the grinding phenomenon, improve the mill efficiency of grinding machine, make the product particle narrow distribution, improve classification performance and classification efficiency.Domestic is example with GX type powder concentrator, draw structural some characteristic of external powder concentrator, designed rational separation decentralized system, good spreading disk of dispersive property and the rotating impeller of being made up of some blades and horizontal baffle are installed on the powder concentrator main shaft, around impeller, be provided with the graded region that the guiding fan blade surrounds, guiding fan blade outside is one, and secondary side is to intake stack, and body upper has a tapered ash bucket.The ash bucket side is provided with two tertiary-air pipe; Abroad the Sepax type powder concentrator with F.L.Smith is an example, its separating part is by bearing cage, the spindle rotor joint, rotating vane, compositions such as guide vane, awl bucket, powder outlet, it disperses part by the rising airduct, the spreading plate, sealing gland, drawing-in device, compositions such as abrasive body fragment outlet, tedge is apart from adjustable.Their common characteristic are the materials that draws off from grinding machine, enter powder concentrator by material-strewing device, take the dispersion part to by the air-flow that rises, the wear debris of abrasive body and the sedimentation in air-flow of grog coarse grain, discharge by powder concentrator bottom fragment outlet, the material that disperses enters separating part with air-flow along increase in pipeline, because the effect of impeller rotation and guide plate, form the level rotary flow field, when material is sprinkled in the air-flow of graded region by spreading plate and auxiliary equipment thereof, material just is subjected to the effect of two kinds of power simultaneously, be the centrifugal action of eddy flow field and the centripetal force effect of air-flow, material is separated under the contending with of centrifugal force and centripetal force, the big material of those coarsenesses is thrown toward the limit wall under action of centrifugal force, rotation decline falls into the meal funnel and is discharged from, and those granuliform little materials are then under the effect of centripetal force, discharge from airduct, finally enter dust arrester installation.For Sepax type high-efficient powder concentrator, enter eddy flow field separated before, though treating the branch material disperses in advance through the increase in pipeline of certain-length, but the coarse fodder to entrained fines does not have cleaning process, therefore reduced grinding efficiency, meal is cleaned and simultaneously utilize spreading disk material to be sprinkled into the powder concentrator of eddy flow field for having by multiple air inlet, last measure has improved selects the powder effect, and latter's dispersion effect is not ideal enough, and its combination property directly influences the raising grinding efficiency.

The purpose of this utility model is to design a kind of new and effective powder concentrator, material had stronger dispersion separating effect, improve the powder rate of selecting, has simultaneously stronger classifying capability again, improve classification efficiency, not only can be applied to cement industry, also be suitable for requirement and select in the other industries such as the higher chemical industry of powder, grain, medicine.

Feature of the present utility model is to have stronger dispersion part and stronger separating part.The material that makes powder to be selected in design is through drawing-in device spreading plate, spread the dispersion awl that is constituted to by cone or paraboloid or fairing butt joint, be control air quantity and material input quantity, spreading plate and dispersion awl adjustable distance 2-200mm, when air-flow enters when disperseing awl along increase in pipeline, because shunting effects such as cone, air-flow evenly rises along the crack between cone and the increase in pipeline, disperse spreading by drawing-in device to the material that disperses awl and descend along cone, dispersed material enters the dispersion tube of length 2-10 rice with air-flow, make the material of dispersion that the floating outstanding time of certain dispersion be arranged in the air-flow of directed flow, make its sufficient dispersion, enter the separation chamber then, at rotor, blade, in the formed level rotary flow of the guide vane field, material is separated by the grade size, fine powder is discharged by the fine powder discharging opening by rotor, coarse fodder is then along the inboard landing downwards of cone, be subjected to the cleaning of the secondary wind of 1 to 3 road annular passage conveying, its fine powder of carrying secretly is loose by the secondary wind, enter rotor through kuppe with secondary wind, discharge by the fine powder discharging opening; Coarse fodder after the cleaning is discharged by bottom, separation chamber coarse fodder mouth, sends into decentralized system through the grinding machine grinding again by drawing-in device again, so circulation, make＜powder of 80～200 μ m more than 80% by sorting.

Fig. 1 is an embodiment of the present utility model, and (1) is a wind main pipeline, and (2) disperse awl for bicone, (3) be the drawing-in device of band spreading plate, (4) for disperseing tube, (5) are the coarse fodder outlet, (6) be secondary wind inleting tube, (7) be 1-3 road annular passage, (8) are rotor, and (9) are the guiding fan blade, (10) be the fine powder discharging opening, (11) be kuppe, (12) are the separation chamber, (13) fragment outlet.One time wind rises along main pipeline (1), blow through disperseing to bore on (2) lower cone edge, to spread to the material that disperses the awl upper cone by drawing-in device (3) and disperse, enter then and disperse tube (4), make material that the enough suspension stay time be arranged, enter separation chamber (12) after fully disperseing, in rotor (8) and the formed eddy flow field of guiding fan blade (9), material is separated into fine powder material and meal material by grade, fine powder material is discharged by fine powder discharging opening (10) by central air hose, the meal material then falls along separation chamber's cone cavity, in the dropping process, be subjected to the cleaning of the secondary wind that the bottom, separation chamber is blown into through annular passage (7) by secondary air channel (6), make fine powder successfully enter rotor through kuppe (11), under air-flow drives, discharge from the fine powder discharging opening.Sheng Xia meal material is discharged by the coarse fodder mouth at last, and the wear debris of abrasive body and grog coarse grain are discharged by fragment outlet (13).Present embodiment disperses awl and main pipeline gap 1-20mm, 55 °～75 ° in secondary wind and separation chamber's cone angle of cut disperse tube length 2-10m, disperse awl to be the bullet of up-small and down-big butt joint, 55 °-75 ° in coarse fodder pipe and separation chamber's conical section angle of cut adopt a kuppe.

The utility model selects the powder machine to compare with domestic having now, grinding efficiency can carry 10～30%, make mill output improve 20～30%, reduce power consumption 10～15%, if to produce ton cement abrasive dust power consumption 70 degree, the whole nation year 100000000 7 thousand ten thousand tons of meters of cement output, then a year economize on electricity reaches 1,100,000,000 degree, has both made the whole nation only have 10% cement plant, use the utility model, also can rise in value about ten million yuan, if each cement producer of the whole nation all uses the utility model, new units increased in production can reach 3,500 ten thousand tons, save 700,000,000 yuan of investments, both made and only had 10% cement producer employing, also can save 7,000 ten thousand yuan of investments, the obvious economic results in society of tool.

Claims (2)

1, a kind of rotor that utilizes, guiding fan blade etc. produces eddy flow field with separation of material, the powder concentrator that disperses material by material device, airduct, dispersion tube etc., it is characterized in that through part is arranged with the dispersion awl of being made up of the cone of two butt joints or paraboloid or fairing, separating part is provided with 1-3 road annular passage, make secondary wind, the coarse fodder that accompanies fine powder is cleaned by the secondary air channel input;

2,, it is characterized in that separating part is provided with a kuppe according to the described powder concentrator of claim 1.