CN201871413U - Continuous feeding device for jet mill - Google Patents
Continuous feeding device for jet mill Download PDFInfo
- Publication number
- CN201871413U CN201871413U CN 201020658124 CN201020658124U CN201871413U CN 201871413 U CN201871413 U CN 201871413U CN 201020658124 CN201020658124 CN 201020658124 CN 201020658124 U CN201020658124 U CN 201020658124U CN 201871413 U CN201871413 U CN 201871413U
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- powder
- conveyer belt
- hopper
- driving wheel
- feeding
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Abstract
A continuous feeding device for a jet mill comprises an upper pneumatic butterfly valve, a lower pneumatic butterfly valve, a material feeding hopper and a material discharging hopper, and is characterized in that a main driving wheel and an auxiliary driving wheel which are driven by a motor are arranged between the material feeding hopper and the material discharging hopper, the main driving wheel and the auxiliary driving wheel are rotatably connected with a synchronous driving belt so as to form a powder conveyer belt, a top plane in the middle of the powder conveyer belt corresponds to a material outlet of the material feeding hopper, and two side surfaces of the powder conveyer belt correspond to an opening at the upper end of the material discharging hopper. A variable-frequency speed regulating motor controls the rotating speed of the conveyer belt so as to control the conveying speed of powder, and further control the powder feeding quantity, and the powder feeding quantity can be adjusted within 30-150kg/h. Simultaneously, the conveyer belt rotates with constant speed so as to realize the continuous powder feeding and the uniform blanking, the grinding quantity can be controlled to fluctuate within 1kg, the grain size of ground powder can be uniform in distribution, and is good in consistency, and a formed and sintered product can obtain higher magnetic property and a magnet is compact.
Description
Technical field
The utility model relates to a kind of continuous feed device of abrasive material, and iron is not the continuous feed device about airflow milling.
Background technology
When preparing, adopts NdFeB material airflow milling powder process.Existing airflow milling adopts bucket formula vibratory impulse feeding manner, and abrasive material one one is underground to the mill chamber, and the blanking amount fluctuates in the 5-7KG scope.The shortcoming of this feeding manner is to be that charging is discontinuous uniformly, thereby, when blanking for a long time, the material that enters in the grinder is many, and powder grinds carefully, and powder grinds slightly under the few situation of material, its size distribution of the magnetic of Sheng Chaning is inhomogeneous like this, influence the magnetic property of final products, especially, influence particularly evident getting rid of the broken material of sheet hydrogen.Therefore, need the feeding manner of airflow milling is improved.CN2558457Y propose to adopt filters cyclone trap and fines and ultra-fine material are captured together collects, and guarantees that the granularity of magnet powder distribution curve is reasonable.But its charging adopts spiral propeller still to exist feed interrupted, and it is still unresolved to pulverize uneven problem.
Summary of the invention
The utility model provides a kind of powder to enter into equably continuously and makes grounds travel material granularity uniform airflow mill continuous feed device in the milling compartment at the above-mentioned state of the art.
Airflow milling continuous feed device, comprise Pneumatic butterfly valve and turnover hopper up and down, it is characterized in that between feed hopper and discharge bucket, establishing by motor-operated major-minor drive, major-minor drive and synchronous belt are rotationally connected and form the powder conveyer belt, the centre on plane, described powder conveyer belt top is corresponding with the discharging opening of described feed hopper, and described powder conveyer belt two sides are corresponding with the opening of discharge bucket upper end.
The beneficial effects of the utility model are: by frequency control motor control conveyer belt rotating speed, thus control powder transporting velocity, and then reaching control powder inlet amount, the inlet amount of powder can be adjustable between 30-150kg/h.Simultaneously, because the conveyer belt uniform rotation, thereby realizing the powder continuous feed, blanking is even, and its mill amount is controlled at fluctuation in the 1KG scope, and the powder particles through grinding is evenly distributed, high conformity, and product obtains than high magnetic characteristics, magnet densification behind moulding, sintering.
Description of drawings
Fig. 1 is a structure chart of the present utility model
Fig. 2 is the side direction view of Fig. 1
The specific embodiment
Below in conjunction with accompanying drawing the utility model structure is described further
Shown in Fig. 1-2, the feed arrangement of air-flow abrasive dust comprises overdraught butterfly valve 1, goes up feed hopper 2, powder conveyer belt casing 4, Synchronous Transmission assembly 5, bottom discharge bucket 6 and downstream butterfly valve 7, overdraught butterfly valve 1 is connected to the lower end that meal 3 enters and is connected with the upper end of last feed hopper 2, last feed hopper 2 is up big and down small flaring funnel, and last feed hopper 2 is aimed to be located at powder conveyer belt chamber 4 end face openings and to seal and fused.The powder that powder conveyer belt 52 and major-minor drive 51 are located at sealing transmits in the casing 4, Synchronous Transmission assembly 5 comprises that motor 54, decelerator 55, turning cylinder 53, powder conveyer belt 52 and major-minor pass wheel 51, motor 54 is located at powder and transmits casing 4 outsides, this motor 54 is a frequency control motor, motor 54 outputs drive main driving wheel by decelerator 55 deceleration rear output shafts 53 and powder conveyer belt 52 rotates, and powder conveyer belt 52 drives the auxiliary driving wheel again and rotates synchronously.The centre on plane, powder conveyer belt 52 top is corresponding with the discharging opening of last feed hopper 2.Discharging opening is relatively-stationary with the vertical interval of material powder conveyer belt 52.Motor 54 rotating speeds are fixedly the time, and powder conveyer belt 52 also average rate rotates and drives the powder conveyer belt and turn to the side and fall within the bottom discharge bucket 6, and bottom discharge bucket 6 also be up big and down small flaring funnel, and the discharging opening of following Pneumatic butterfly valve 7 and bottom discharge bucket 6 is tightly connected.When according to technological requirement, in electrical equipment control, configure motor speed and air-flow grinder when making pressure, last Pneumatic butterfly valve 1 is opened, meal 3 enters in the feed hopper 2, motor 54 starts, following Pneumatic butterfly valve 7 is opened, motor is controlled in pre-set velocity, output is slowed down through decelerator 55 again, driving the major-minor drive rotates, driving powder conveyer belt 52 synchronous average rates again rotates, because the discharging opening of last feed hopper 2 keeps specific distance with the plane, top of powder conveyer belt 52 respectively, keep the uniform motion of the meal of specific thicknesses via powder conveyer belt 52, make the powder amount that falls that falls into bottom discharge bucket 6 keep uniform and stable, the speed of employing frequency control motor is regulated the powder amount of advancing that reaches the control meal and is gone out jin/hour scope at 30-150, its excursion is in ± 1 kilogram, enter in the Air Grinder unanimity that is evenly distributed of the powder particles through grinding, the good magnet structure densification of neodymium iron boron magnetic that obtains through forming and sintering.
Claims (3)
1. air-flow abrasive dust continuous feed device, comprise that pneumatic dish closes loading hopper and goes out funnel up and down, it is characterized in that between last feed hopper and bottom discharge bucket, establishing by motor-operated major-minor drive, major-minor drive and synchronous belt are rotationally connected and form the powder conveyer belt, the centre on plane, described powder conveyer belt top is corresponding with the discharging opening of discharge bucket, and the two sides of described powder conveyer belt are corresponding with the opening of discharge bucket upper end.
2. air-flow abrasive dust continuous feed device according to claim 1 is characterized in that described motor (54) is a frequency control motor.
3. air-flow abrasive dust continuous feed device according to claim 1 is characterized in that described powder conveyer belt (52) and major-minor drive (51) are located in the powder transmission casing (4) of sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020658124 CN201871413U (en) | 2010-12-02 | 2010-12-02 | Continuous feeding device for jet mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020658124 CN201871413U (en) | 2010-12-02 | 2010-12-02 | Continuous feeding device for jet mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201871413U true CN201871413U (en) | 2011-06-22 |
Family
ID=44159347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020658124 Expired - Lifetime CN201871413U (en) | 2010-12-02 | 2010-12-02 | Continuous feeding device for jet mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201871413U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104258959A (en) * | 2014-10-13 | 2015-01-07 | 成都冠禹科技有限公司 | Black tea smashing device |
| CN105396672A (en) * | 2015-12-01 | 2016-03-16 | 中磁科技股份有限公司 | Air-flow mill |
-
2010
- 2010-12-02 CN CN 201020658124 patent/CN201871413U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104258959A (en) * | 2014-10-13 | 2015-01-07 | 成都冠禹科技有限公司 | Black tea smashing device |
| CN105396672A (en) * | 2015-12-01 | 2016-03-16 | 中磁科技股份有限公司 | Air-flow mill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110622 |
|
| CX01 | Expiry of patent term |