Vertical double-rotor screw feeding grader
Technical field
The utility model relates to the super fine powder classifier of a kind of high efficiency, high yield, particularly relates to a kind of vertical double-rotor screw feeding grader, is widely used in industries such as chemical industry, medicine, electronics and ink powder, laser powder.
Background technology
Existing all kinds of super fine powder classifier is in classification process, can only control the above powder of a certain fineness standard, wherein comprise superfine powder and crossed coarse dispersion, very strict to the fineness requirement of ink powder and laser powder in ink powder and laser powder industry because meticulous and thick excessively powder all is a waste material, and can with powder only be the intermediate specification of coarse fodder and fines, wanted and then will carry out classification more than the secondary to standard compliant powder, therefore, the product yield is low, the production cost height.
Summary of the invention
In order to overcome the problem of above-mentioned super fine powder classifier, the utility model provides a kind of improved vertical double-rotor screw feeding grader.
The utility model is to realize like this; A kind of vertical double-rotor screw feeding grader described in the utility model, comprise grading room cylindrical shell and the armature spindle bearing and the feed pipe that are contained on the grading room cylindrical shell, discharge nozzle and classification rotor blade, described grading room cylindrical shell comprises grading room cylindrical shell and following grading room cylindrical shell, prism is equipped with feed pipe in last grading room cylindrical shell upper end, upper blast pipe and last fine powder discharge nozzle, at the inwall of last grading room cylindrical shell the spiral sieve plate is housed, on the grading room cylindrical shell lower blast pipe is being housed down, following fine powder discharge nozzle and meal discharge nozzle, spiral sieve plate under the inwall of grading room cylindrical shell is equipped with down, can increase a helical duct in rotor periphery like this, and be equipped with the pneumatic jig blast pipe of scroll casing shape, make powder under the effect of rotation wind-force, pass through helical duct smoothly, help fully contacting of powder and rotor blade, further improve grading effect, described armature spindle bearing comprises upper rotor part bearing block that is contained in grading room cylindrical shell upper end and the lower rotor part bearing block that is contained in down grading room cylindrical shell lower end, the classification rotor is being housed on the upper rotor part bearing block, fine powder separates wheel in one of the series connection in the middle of last classification rotor, the classification rotor is housed down on the lower rotor part bearing block, following fine powder of series connection separates wheel in the middle of following classification rotor, series connection separates wheel in the classification rotor, mainly play the effect of lengthening classification passage, thereby improve the classification quality of powder, the utility model operation principle; After material enters the grading room cylindrical shell from feed pipe, under the effect of last material scraping plate, be dispersed in equably the grading room cylinder inboard wall around, material is after last classification rotor rotation, effect by last spiral sieve plate, part fines system air stream and last classification rotor and on fine powder separates under the effect of wheel and separates, from last fine powder discharge nozzle discharge.Another part do not have separated fines continue by spiral plate down act on system air stream and down the classification rotor separate with following fine powder under the secondary action of taking turns again, further separate, from fine powder discharge nozzle discharge down, the residue coarse granule that continues to fall is discharged by the meal discharge nozzle under the effect of following material scraping plate.The described classification rotor of going up separates with last fine powder material scraping plate is housed between wheel, following classification rotor separates with following fine powder material scraping plate is housed down between wheel, be convenient to abundant collection to powder, between upper and lower classification rotor, hinge opening and closing apparatus is housed, it is convenient that upper and lower classification rotor is cleaned, and also can use down the classification rotor to carry out particle classifying as required separately in addition.
The utility model compared with prior art has following advantage:
1, under identical working condition, classification efficiency of the present utility model and effectiveness of classification improve a lot.
2, upper and lower classification rotor of the present utility model can use separately flexibly, and energy efficient reduces production costs.
3, the utility model structure is tightly played, and it is convenient to use, clean.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Number in the figure is represented:
1-lower rotor part bearing block, fine powder separates wheel, material scraping plate under the 3-, classification rotor under the 4-under the 2-, spiral sieve plate under the 5-, grading room cylindrical shell under the 6-, 7-hinge, the last grading room cylindrical shell of 8-, the last spiral sieve plate of 9-, the last classification rotor of 10-, the last material scraping plate of 11-, the last fine powder of 12-separates wheel, 13-feed pipe, 14-upper rotor part bearing block, the last fine powder discharge nozzle of 15-, 16-upper blast pipe, the 17-lower blast pipe, fine powder discharge nozzle under the 18-, 19-meal discharge nozzle.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is elaborated, but embodiment is not to restriction of the present utility model.With reference to shown in Figure 1, a kind of vertical double-rotor screw feeding grader, comprise grading room cylindrical shell and the armature spindle bearing that is contained on the grading room cylindrical shell, and feed pipe, discharge nozzle and classification rotor blade, the grading room cylindrical shell comprises grading room cylindrical shell 8 and following grading room cylindrical shell 6, at last grading room cylindrical shell 8 upper end prisms feed pipe l3 is housed, upper blast pipe 16 and last fine powder discharge nozzle 15, at the inwall of last grading room cylindrical shell 8 spiral sieve plate 9 is housed, on the grading room cylindrical shell 6 lower blast pipe 17 is being housed down, following fine powder discharge nozzle 18 and meal discharge nozzle 19, spiral sieve plate 5 under the inwall of grading room cylindrical shell 6 is equipped with down, described armature spindle bearing comprises upper rotor part bearing block 14 that is contained in grading room cylindrical shell upper end and the lower rotor part bearing block 1 that is contained in down grading room cylindrical shell 6 lower ends, classification rotor 10 is being housed on the upper rotor part bearing block 14, fine powder separates wheel 12 in one of series connection in the middle of the last classification rotor 10, classification rotor 4 is housed down on the lower rotor part bearing block 1, following fine powders separation wheel 2 of series connection mainly makes the classification passage extend in the middle of following classification rotor 4, thereby improved the classification quality of powder, separate 12 on wheel with last fine powder at last classification rotor 10 material scraping plate 11 is housed, following classification rotor 4 separates 2 on wheel material scraping plate 3 is housed down with following fine powder, be convenient to part collection of filling like this to powder, two classification rotors adopt face-to-face to be installed, synchronous equidirectional rotation, on, following helical duct also is equidirectional, effective assurance is provided improving product quality and yield, in the middle of last grading room cylindrical shell 8 and following grading room cylindrical shell 6, hinge 7 closing devices are housed, the one, be convenient to clean, the 2nd, can use a following component level rotor to carry out particle classifying separately.