CN102671748B - Air-stream milling device for realizing secondary grinding of coarse powder - Google Patents
Air-stream milling device for realizing secondary grinding of coarse powder Download PDFInfo
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- CN102671748B CN102671748B CN201210155995.XA CN201210155995A CN102671748B CN 102671748 B CN102671748 B CN 102671748B CN 201210155995 A CN201210155995 A CN 201210155995A CN 102671748 B CN102671748 B CN 102671748B
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Abstract
The invention discloses an air-stream milling device for realizing secondary grinding of coarse powder. The air-stream milling device comprises a grinding chamber and a cyclone separator which are mutually communicated with each other, and further comprises a powder screening device and a material returning pipe, wherein the powder screening device consists of a powder screening box, a vibration motor, a stream guidance cover, a switch type fan blade separator and a vibration screen; the vibration motor is arranged at the bottom of the powder screening box; the stream guidance cover is located above the vibration motor; a discharging opening and a first air path adapter, which are in a symmetrical structure, are arranged on the side wall of the stream guidance cover; the vibration screen is located at the opening of the stream guidance cover; the switch type fan blade separator is located in the stream guidance cover and is located right below the vibration screen; the motor shaft of the vibration motor passes through the bottom of the stream guidance cover; the front end of the motor shaft is respectively matched with the switch type fan blade separator and the vibration screen; a feedback pipe port and a second air path adapter are arranged on the side wall of the powder screening box; and the feedback pipe port and the second air path adapter are located above the vibration screen and are oppositely arranged. The air-stream milling device provided by the invention can ensure that the granularity of the grinded powder is less than 20 mu m; the powder consistency is improved; and the discharging rate can reach to be more than 95%. The air-stream milling device provided by the invention is mainly used for the field of powder metallurgy.
Description
Technical field
The present invention relates to a kind of power metallurgy equipment, particularly realize the airflow milling device of meal regrind.
Background technology
Airflow milling is that a kind of to utilize high pressure draught to carry out fine powder to granular material broken, is processed into the milling apparatus of attritive powder.Its operation principle is that gases at high pressure (mostly being nitrogen) are accelerated by nozzle, and speed reaches as high as supersonic speed magnitude, make to grind indoor meal particle and in high speed knock-on process, reach the object of pulverizing,
But in work is used, people usually can find still can have a part of big particle from mill chamber powder out.For this problem, in the public technology that is a kind of airflow milling at known (application number is 03116485.4) patent name, it goes here and there a mill separator between grinding chamber and cyclone separator, but after practice, find that it fails effectively to reduce the ratio of big particle, and dispersed poor, in the powder processing, still have the coarse granule that is greater than 25 microns, especially the particle of 20～25 microns is more, affects distribution and the uniformity of powder; In addition in its design because mill separator is directly connected with mill chamber, big particle not with newly enter powder and fully mix and just carry out regrind, cause superfine powder to increase, powder uniformity variation, mass output rate reduction is only 90%, causes serious waste.
Summary of the invention
The object of the invention is to provide in order to solve above-mentioned the deficiencies in the prior art a kind of can effectively reduction to grind rear powder particles, improve powder uniformity, thereby promote the airflow milling device of realizing meal regrind of mass output rate.
To achieve these goals, the airflow milling device of realizing meal regrind that the present invention is designed, the grinding chamber and the cyclone separator that comprise mutual perforation, also comprise sieve powder device and feed back pipe, the vibrating motor that described sieve powder device comprises sieve powder case and is positioned at sieve powder case, kuppe, switching regulator flabellum separator and vibratory sieve, vibrating motor is placed in sieve powder case bottom, kuppe is positioned at the top of vibrating motor, the sidewall of kuppe is provided with discharging opening and the first gas circuit is taken over, discharging opening and the first gas circuit are taken over as being symmetrical arranged, and the sidewall that all runs through sieve powder case, vibratory sieve is positioned at the opening part of kuppe, switching regulator flabellum separator is positioned at kuppe and under vibratory sieve, the motor drive shaft of vibrating motor runs through kuppe bottom, motor drive shaft front end respectively with switching regulator flabellum separator, vibratory sieve coordinates, the sidewall of described sieve powder case is provided with feed back interface tube and the second gas circuit is taken over, feed back interface tube and the second gas circuit are taken over the top that is all positioned at vibratory sieve, and for mutually towards setting, feed back pipe one end is socketed on feed back interface tube, the other end of feed back pipe is communicated with grinding chamber, the feed opening of described cyclone separator is communicated with sieve powder case, and its junction is positioned at the top of sieve powder case.
In said structure, after grinding first, by the broken material powder particles of fine powder completely, can not reentered grinding chamber by feed back pipe, and mix and carry out regrind with new powder in grinding chamber.
In order to realize the Push And Release that the second gas circuit is taken over according to the meal amount of staying vibratory sieve upper end, thereby promote feed back reasonability, the second gas circuit in this creativity and innovation is taken over and is provided with time control valve.
For the blanking reasonability of lifting cyclone separator, avoid occurring backflow phenomenon simultaneously, the feed opening of the cyclone separator in this creativity and innovation is provided with time control check valve.
In order to promote discharging speed, the discharging opening in the invention is provided with nozzle.
In order to promote feed back speed, on the feed back interface tube in the invention, be equipped with nozzle.
In order to protect the vibrating motor in this creativity and innovation, extend its service life, described in this creativity and innovation, sieving between powder case and kuppe is matched in clearance, the shape of kuppe changes along with the variation of the shape of sieve powder case; ; Between described motor drive shaft front end and switching regulator flabellum separator, vibratory sieve, be and be flexible coupling.
In order to improve blanking velocity, kuppe described in this creativity and innovation bottom is incline structure, and it is near discharging opening place lower than away from discharging opening place, and angle of inclination is 15 ~ 60 °.
In concrete production and application, in order to promote the reinforced reasonability of grinding chamber, in this creativity and innovation, between sieve powder device and grinding chamber, be also provided with feeder, between sieve powder case and feeder, by feed back pipe, be communicated with, one end of feed back pipe is connected with the nozzle on feed back interface tube, the other end of feed back pipe is connected with feeder, and the lower end of feeder is communicated with grinding chamber by feed pipe.
For in concrete production and application, the convenient discharging opening attritive powder out of collecting, the nozzle described in this creativity and innovation on discharging opening is connected with aggregate pipe, and the other end of aggregate pipe is communicated with loading head.
In order to expand the scope of application of this creativity and innovation, the order number of vibratory sieve described in this creativity and innovation is adjustable from 2 ~ 10000.
The airflow milling device of realizing meal regrind that the present invention obtains, its feed opening at cyclone separator connects a sieve powder device, described sieve powder device is that grinding chamber is communicated with, make by the complete broken material powder particles of fine powder, can not reentered grinding chamber by feed back pipe after grinding first, and mix and carry out regrind with new powder in grinding chamber, thereby can effectively reduce, grind rear powder particles, powder particles can be controlled in below 20 μ m, improve powder uniformity, mass output rate can reach more than 95%; The production efficiency of this creativity and innovation is high simultaneously, and operation has controllability, and reasonable integral structure, long with the life-span.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of embodiment 1;
Fig. 2 sieves the cutaway view of powder device in embodiment 1;
Fig. 3 is the sieve powder device that is connected in embodiment 1 and the cutaway view of cyclone separator;
Fig. 4 is the schematic diagram of the A side of switching regulator flabellum separator in embodiment 1;
Fig. 5 is the overall structure schematic diagram of embodiment 2;
Fig. 6 is the sieve powder device that is connected in embodiment 2 and the cutaway view of cyclone separator;
Fig. 7 is the overall structure schematic diagram of embodiment 3;
Fig. 8 sieves the cutaway view of powder device in embodiment 3;
Fig. 9 is the overall structure schematic diagram of embodiment 4.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
Embodiment 1:
As Fig. 1, Fig. 2, the airflow milling device of realizing meal regrind shown in Fig. 3 and Fig. 4, it comprises grinding chamber 1 and the cyclone separator 2 of mutual perforation, also comprise sieve powder device 3 and feed back pipe 4, described sieve powder device 3 comprises sieve powder case 31 and the vibrating motor 32 that is positioned at sieve powder case 31, kuppe 33, switching regulator flabellum separator 34 and vibratory sieve 35, the order number of above-mentioned vibratory sieve 35 is 500, vibrating motor 32 is placed in sieve powder case 31 bottoms, kuppe 33 is positioned at the top of vibrating motor 32, the sidewall of kuppe 33 is provided with discharging opening 331 and the first gas circuit takes over 332, discharging opening 331 and the first gas circuit take over 332 for being symmetrical arranged, and the sidewall that all runs through sieve powder case 31, vibratory sieve 35 is positioned at the opening part of kuppe 33, switching regulator flabellum separator 34 is positioned at kuppe 33 and under vibratory sieve 35, the motor drive shaft 321 of vibrating motor 32 runs through kuppe bottom 333, motor drive shaft 321 front ends respectively with switching regulator flabellum separator 34, vibratory sieve 35 coordinates, the sidewall of described sieve powder case 31 is provided with feed back interface tube 311 and the second gas circuit takes over 312, feed back pipe 4 feed back interface tubes 311 and the second gas circuit adapter 312 are all positioned at the top of vibratory sieve 35, and for mutually towards setting, feed back pipe one end is socketed on interface 311, the other end of feed back pipe 4 is communicated with grinding chamber 1, the feed opening 21 of described cyclone separator 2 is communicated with sieve powder case 31, and its junction is positioned at the top of sieve powder case 31.
" the order number " occurring in above-mentioned word, for the common technology word in industry field, refers to the hole count of screen cloth in 1 inch of line segment.
Described in the present embodiment, sieve between powder case 31 and kuppe 33 is matched in clearance, the shape of kuppe 33 changes along with the variation of the shape of sieve powder case 31, make to be enclosed within the kuppe 33 on motor drive shaft 321 and sieve between powder case 31 inwalls and have certain free gap, thereby play the effect of protection vibrating motor 32, extend its service life, between described motor drive shaft 321 front ends and switching regulator flabellum separator 34, vibratory sieve 35, be and be flexible coupling simultaneously, also can play the effect of protection vibrating motor 32; In order to improve blanking velocity, kuppe described in the present embodiment bottom 333 is incline structure, and it is near discharging opening 331 places lower than away from discharging opening 331 places, and angle of inclination is 15 °, and above-mentioned angle of inclination can be adjusted between 15 ~ 60 ° as the case may be certainly.
The matched in clearance occurring in foregoing is the common technology word in industry field with being flexible coupling, and in prior art, above-mentioned two technology words has also been carried out to clear and definite definition and explanation, therefore be seldom described in detail at this; Described vibrating motor 32 is also the existing product that can directly buy simultaneously, and its operation principle is not described in detail at this yet.
In said structure, after grinding first, by the broken material powder particles of fine powder completely, can not reentered grinding chamber 1 by feed back pipe 4, and mix and carry out regrind with new powder in grinding chamber 1.
Embodiment 2:
As shown in Figure 5 and Figure 6, the airflow milling device of realizing meal regrind that the present embodiment provides, its general configuration is consistent with embodiment 1, but take over 312 Push And Release in order to realize the second gas circuit according to the meal amount of staying vibratory sieve 35 upper ends, make its operation there is controllability, thereby promote feed back reasonability, the second gas circuit in the present embodiment is taken over 312 and is provided with time control valve 6; For the blanking reasonability of lifting cyclone separator 2, make its operation there is controllability, avoid occurring backflow phenomenon simultaneously, the feed opening 21 of the cyclone separator 2 in the present embodiment is provided with time control check valve 7.
In concrete use, when the time control valve 6 in the second gas circuit adapter 312 is open mode, the switching regulator flabellum separator 34 of vibratory sieve 35 belows is closed automatically, avoids the attritive powder of kuppe bottom 333 under the effect of air pressure, to pass vibratory sieve 35, thereby form, refluxes; When the time control valve 6 in the second gas circuit adapter 312 is closed condition, the switching regulator flabellum separator 34 of vibratory sieve 35 belows is opened automatically, and the powder that on vibratory sieve 35, thickness is adulterated entered the screening of vibratory sieve 35 and successfully falls kuppe bottom 333.Embodiment 3:
As shown in Figure 7 and Figure 8, the airflow milling device of realizing meal regrind that the present embodiment provides, its general configuration is consistent with embodiment 1, but in order to promote discharging speed, the discharging opening 331 in the present embodiment is provided with nozzle 5; In order to promote feed back speed, the feed back interface tube 311 in the present embodiment is provided with nozzle 5.
Embodiment 4:
As shown in Figure 9, the airflow milling device of realizing meal regrind that the present embodiment provides, its general configuration is consistent with embodiment 1, but in concrete production and application, in order to promote the reinforced reasonability of grinding chamber 1, in the present embodiment, between sieve powder device 3 and grinding chamber 1, be also provided with feeder 9, between sieve powder case 31 and feeder 9, by feed back pipe 4, be communicated with, one end of feed back pipe 4 is connected with the nozzle 5 on feed back interface tube 311, the other end of feed back pipe 4 is connected with feeder 9, and the lower end of feeder 9 is communicated with grinding chamber 1 by feed pipe 11.
For in concrete production and application, convenient discharging opening 331 attritive powder out of collecting, the nozzle 5 on described discharging opening 331 is connected with aggregate pipe 10, and the other end of aggregate pipe 10 is communicated with loading head 8, and described aggregate pipe 8 mostly is flexible pipe, preferably bellows.
Claims (10)
1. an airflow milling device of realizing meal regrind, the grinding chamber (1) and the cyclone separator (2) that comprise mutual perforation, it is characterized in that: also comprise sieve powder device (3) and feed back pipe (4), described sieve powder device (3) comprises sieve powder case (31) and the vibrating motor (32) that is positioned at sieve powder case (31), kuppe (33), switching regulator flabellum separator (34) and vibratory sieve (35), vibrating motor (32) is placed in the bottom of sieve powder case (31), kuppe (33) is positioned at the top of vibrating motor (32), the sidewall of kuppe (33) is provided with discharging opening (331) and the first gas circuit is taken over (332), discharging opening (331) is taken over (332) for being symmetrical arranged with the first gas circuit, and the sidewall that all runs through sieve powder case (31), vibratory sieve (35) is positioned at the opening part of kuppe (33), switching regulator flabellum separator (34) is positioned at kuppe (33) and under vibratory sieve (35), the motor drive shaft (321) of vibrating motor (32) runs through kuppe bottom (333), motor drive shaft (321) front end respectively with switching regulator flabellum separator (34), vibratory sieve (35) coordinates, the sidewall of described sieve powder case (31) is provided with feed back pipe and connects (311) and the second gas circuit adapter (312), feed back pipe connects (311) and the second gas circuit is taken over the top that (312) are all positioned at vibratory sieve (35), and for mutually towards setting, feed back pipe (4) one end is socketed in feed back pipe and connects on (311), the other end of feed back pipe (4) is communicated with grinding chamber (1), the feed opening (21) of described cyclone separator (2) is communicated with sieve powder case (31), and its junction is positioned at the top of sieve powder case (31).
2. the airflow milling device of realizing meal regrind according to claim 1, is characterized in that: in the second gas circuit, take on (312) and be provided with time control valve (6); The time that is provided with on the feed opening (21) of cyclone separator (2) is controlled check valve (7).
3. the airflow milling device of realizing meal regrind according to claim 1 and 2, is characterized in that: at discharging (331) and feed back pipe, connect and on (311), be equipped with nozzle (5).
4. the airflow milling device of realizing meal regrind according to claim 1 and 2, it is characterized in that: between described sieve powder case (31) and kuppe (33), be matched in clearance, the shape of kuppe (33) changes along with the variation of the shape of sieve powder case (31); Between described motor drive shaft (321) front end and switching regulator flabellum separator (34), vibratory sieve (35), be and be flexible coupling.
5. the airflow milling device of realizing meal regrind according to claim 3, is characterized in that: between described sieve powder case (31) and kuppe (33), be matched in clearance; Between described motor drive shaft (321) front end and switching regulator flabellum separator (34), vibratory sieve (35), be and be flexible coupling.
6. the airflow milling device of realizing meal regrind according to claim 3, it is characterized in that: between sieve powder device (3) and grinding chamber (1), be also provided with feeder (9), sieve powder case (31) with feeder (9) between by feed back pipe (4), be communicated with, one end of feed back pipe (4) is connected with the nozzle (5) that feed back pipe connects on (311), the other end of feed back pipe (4) is connected with feeder (9), and the lower end of feeder (9) is communicated with grinding chamber (1) by feed pipe (11); Nozzle (5) in described discharging (331) is connected with aggregate pipe (10), and the other end of aggregate pipe (10) is communicated with loading head (8).
7. the airflow milling device of realizing meal regrind according to claim 4, it is characterized in that: between sieve powder device (3) and grinding chamber (1), be also provided with feeder (9), sieve powder case (31) with feeder (9) between by feed back pipe (4), be communicated with, one end of feed back pipe (4) is connected with the nozzle (5) that feed back pipe connects on (311), the other end of feed back pipe (4) is connected with feeder (9), and the lower end of feeder (9) is communicated with grinding chamber (1) by feed pipe (11); Nozzle (5) in described discharging (331) is connected with aggregate pipe (10), and the other end of aggregate pipe (10) is communicated with loading head (8).
8. the airflow milling device of realizing meal regrind according to claim 5, it is characterized in that: between sieve powder device (3) and grinding chamber (1), be also provided with feeder (9), sieve powder case (31) with feeder (9) between by feed back pipe (4), be communicated with, one end of feed back pipe (4) is connected with the nozzle (5) that feed back pipe connects on (311), the other end of feed back pipe (4) is connected with feeder (9), and the lower end of feeder (9) is communicated with grinding chamber (1) by feed pipe (11); Nozzle (5) in described discharging (331) is connected with aggregate pipe (10), and the other end of aggregate pipe (10) is communicated with loading head (8).
9. the airflow milling device of realizing meal regrind according to claim 8, is characterized in that: described kuppe bottom (333) is incline structure, and it is located lower than away from discharging near discharging (331)
(331) locate, angle of inclination is 15 ~ 60 °.
10. the airflow milling device of realizing meal regrind according to claim 9, is characterized in that: the order number of described vibratory sieve (35) is adjustable from 2 ~ 10000.
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| CN201210155995.XA CN102671748B (en) | 2012-05-18 | 2012-05-18 | Air-stream milling device for realizing secondary grinding of coarse powder |
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| CN105021044A (en) * | 2015-07-29 | 2015-11-04 | 诸葛明 | Automatic material preparation device with screening function |
| CN105396672A (en) * | 2015-12-01 | 2016-03-16 | 中磁科技股份有限公司 | Air-flow mill |
| CN108554604B (en) * | 2018-04-27 | 2019-09-17 | 道真自治县玄阳药业有限公司 | For processing the device of Lip river Radix Codonopsis |
| CN110898967A (en) * | 2019-12-13 | 2020-03-24 | 泰州明锋资源再生科技有限公司 | Inclined crushing device in stainless steel pickling sludge treatment process |
| CN111450970B (en) * | 2020-04-13 | 2021-03-09 | 青岛理工大学 | Same-cavity integrated vertical type high-speed multistage superfine grinding device and method for walnut shells |
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| CN2310621Y (en) * | 1997-10-18 | 1999-03-17 | 杨富茂 | Double-suction and -mill superfine mill |
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| CN202555363U (en) * | 2012-05-18 | 2012-11-28 | 宁波松科磁材有限公司 | Airflow grinding device for realizing secondary grinding of coarse powder |
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| JP2002177809A (en) * | 2000-12-13 | 2002-06-25 | Sugino Mach Ltd | Jet collision device |
| JP2003012377A (en) * | 2001-06-28 | 2003-01-15 | Matsushita Electric Ind Co Ltd | Method of manufacturing fine particles and manufacturing device for the same |
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|---|---|---|---|---|
| CN2310621Y (en) * | 1997-10-18 | 1999-03-17 | 杨富茂 | Double-suction and -mill superfine mill |
| CN1443606A (en) * | 2003-04-18 | 2003-09-24 | 宁波韵升（集团）股份有限公司 | Preumatic mill |
| CN201505569U (en) * | 2009-10-15 | 2010-06-16 | 宝钢集团上海梅山有限公司 | Recyclable blast-furnace coal injection device |
| CN202555363U (en) * | 2012-05-18 | 2012-11-28 | 宁波松科磁材有限公司 | Airflow grinding device for realizing secondary grinding of coarse powder |
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Denomination of invention: Air flow grinding device for realizing secondary grinding of coarse powder Effective date of registration: 20210918 Granted publication date: 20140416 Pledgee: China Construction Bank Corporation Fenghua sub branch Pledgor: NINGBO SONGKE MAGNETIC MATERIAL Co.,Ltd. Registration number: Y2021330001723 |
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Denomination of invention: Airflow grinding device for secondary grinding of coarse powder Effective date of registration: 20230515 Granted publication date: 20140416 Pledgee: China Construction Bank Corporation Fenghua sub branch Pledgor: NINGBO SONGKE MAGNETIC MATERIAL Co.,Ltd. Registration number: Y2023980040575 |