CN201454634U

CN201454634U - Multi-stage circulation pulverizer

Info

Publication number: CN201454634U
Application number: CN2009200659047U
Authority: CN
Inventors: 肖钦平; 陈岗; 王贵满; 李晖
Original assignee: Hunan KENON Science and Technology Co Ltd
Current assignee: Hunan KENON Science and Technology Co Ltd
Priority date: 2009-09-16
Filing date: 2009-09-16
Publication date: 2010-05-12
Anticipated expiration: 2019-09-16

Abstract

A multi-stage circulating pulverizer, which includes a vertical frame, a driving device, a transmission mechanism, a main transmission shaft and more than two crushing mechanisms installed on the vertical frame sequentially from top to bottom along the vertical direction, the The output end of the driving device is connected with the main transmission shaft through the transmission mechanism. The crushing mechanism includes a crushing chamber and a rotor impeller and a stator located in the crushing chamber. The rotor impeller is installed on the main transmission shaft and rotates with the main transmission shaft. A material inlet is provided at the top of the uppermost crushing chamber, a material discharge port is provided between adjacent crushing chambers, and a material discharge port is provided at the bottom of the lowermost crushing chamber. The utility model is a multistage circulating pulverizer with simple and compact structure, small volume, low cost, good crushing effect and high production efficiency.

Description

Multistage circulating pulverizer

Technical field

The utility model is mainly concerned with dry type material ultra-fine grinding apparatus field, refers in particular to a kind of multistage circulating pulverizer, and it is applicable to the preparation of powders such as ammonium nitrate.

Background technology

Dry type ultra-fine grinding equipment has types such as mechanical impact crusher, airslide disintegrating mill, ball mill, vibromill.

The crushing efficiency of mechanical impact crusher height, comminution ratio is big, and is simple in structure, and running is stable, in being suitable for, the soft durometer material grinding, the pulverization that not only has impacts, shears and rub of this pulverizer, but also have the air-flow pulverization.

Airslide disintegrating mill is the high turbulent air flow of supersonic speed that produces by nozzle with compressed air or the superheated steam carrier as particle, effects such as impact extruding, friction and shearing take place between particle and the particle or between particle and the fixed head, thereby reach the purpose of pulverizing, but device fabrication cost height, one-time investment is big, energy consumption height, capacity usage ratio have only about 2%, have therefore limited promoting the use of of this technology.

Ball mill is the legacy equipment that is used for ultra-fine grinding, is characterized in that comminution ratio is big, and simple in structure, Mechanical Reliability is strong, and wearing part is checked easily and changed, technical maturity, and adaptability is strong, and product granularity is little; But efficient is low, and energy consumption is big, and the pulverizing time is long, and contour size of the unit(s) is big, and floor space is big, and noise is big.

Vibromill is to support the grinding machine body with spring, make its vibration by the main shaft that has eccentric block, vibration together by medium and material during running, material is pulverized, be characterized in medium filling rate height, the effect number of times height in the unit interval, thereby its efficient is than general milling machine height, but the energy consumption height yields poorly, and noise is big.

Mechanical impact crusher has secondary cam disintegrating machine, edge runner, CWJ micronizer.Secondary cam disintegrating machine rotating speed height reaches 2950rpm, and smashing fineness reaches the just easy putty of 200 orders, must and carry by powerful air-flow mediation; Edge runner is the most traditional disintegrating apparatus, by muller extruding and shear action comminuting matter, belongs to the discontinuous production process equipment, and labor strength is big, and production efficiency is low, and is along with scientific and technological progress, this huge and equipment poor efficiency is just progressively withdrawn from the market; For more novel CWJ micronizer, rotating speed is too high, as 2 tons of hour production capacities then rotating speed to reach 4000rpm, and root diameter 630mm, so high rotating speed is not suitable for materials such as comminuting ammonium nitrate.

The utility model content

The technical problems to be solved in the utility model just is: at the technical problem that prior art exists, the utility model provide a kind of simple and compact for structure, volume is little, with low cost, good crushing effect, multistage circulating pulverizer that production efficiency is high.

For solving the problems of the technologies described above, the utility model by the following technical solutions.

A kind of multistage circulating pulverizer, it is characterized in that: it comprises Vertical Rack, drive unit, transmission mechanism, final drive shaft and more than two vertically, be installed on the disintegrating mechanism on the Vertical Rack from top to bottom successively, the output of described drive unit links to each other with final drive shaft by transmission mechanism, impeller of rotor and stator that described disintegrating mechanism comprises crushing chamber and is positioned at crushing chamber, described impeller of rotor is installed on the final drive shaft and with final drive shaft and rotates, the top of the top crushing chamber offers the material charging aperture, offer feed opening between the adjacent crushing chamber, the bottom of below crushing chamber offers the material discharging opening.

As further improvement of the utility model:

Described material discharging opening is positioned on the tangential direction of below crushing chamber.

Feed opening on the described adjacent crushing chamber staggers mutually.

The outside of described crushing chamber is provided with insulation jacket.

Described transmission mechanism comprises big belt pulley, small belt pulley, driving belt, intermediate gearing and yielding coupling, described small belt pulley is fixed on the output shaft of drive unit, big belt pulley is fixed in an end of intermediate propeller shaft on the intermediate gearing, the other end of intermediate propeller shaft links to each other with final drive shaft by yielding coupling, and driving belt is set around on big belt pulley and the small belt pulley.

Compared with prior art, advantage of the present utility model just is:

1, multistage circulating pulverizer of the present utility model has advantages such as simple and compact for structure, that volume is little, with low cost, good crushing effect, production efficiency height, maintenance are convenient.

2, in the multistage circulating pulverizer of the present utility model, the inwall of each crushing chamber is the circular arc transition, and no right angle reduces the resistance that inner wind circulates, and no dead angle can not cause the delay of material.

3, multistage circulating pulverizer of the present utility model, the production capacity height, rotating speed is low, noise is little, energy consumption is low, efficient is high, epigranular, serialization are pulverized, can be regulated granularity arbitrarily, and the size distribution face is narrow, the thinnest 5-8 micron that reaches.

4, multistage circulating pulverizer of the present utility model, the bearing life height owing to adopt the outboard bearing seat, can effectively avoid the interior dust of crushing chamber to enter in the bearing block.

5, multistage circulating pulverizer of the present utility model has high speed self-loopa air-flow in the chamber during running, and in the chamber no dead angle, and material in the emptying chamber need not the micro mist material after powerful pneumatic separator just can be collected pulverizing automatically.

6, in the multistage circulating pulverizer of the present utility model, do not have machinery friction and mutual bump parts in the chamber, rotor is a cross multiple-blade rotor, processing is simple, and bigger with the gap of stator, rotor speed is low, therefore can pulverize the materials such as ammonium nitrate of certain risk, safe.

7, multistage circulating pulverizer of the present utility model, the equipment outer wall can process insulation jacket, feeds thermal insulation medium and crushing chamber and material are incubated or lower the temperature.

8, multistage circulating pulverizer of the present utility model, multistage circulating rotor mill diameter can reach 520mm, as long as hour production capacity 2 ton hour rotating speeds are between 1500～2000rpm or variable frequency adjustment, particle diameter 80% can reach 10 microns, power of motor only needs 30 kilowatts, equipment operation is steady, and noise is low, the production capacity height.

Description of drawings

Fig. 1 is a main TV structure schematic diagram of the present utility model;

Fig. 2 is a plan structure schematic diagram of the present utility model.

Marginal data:

1, Vertical Rack 101, base

102, Rack Body 2, drive unit

3, final drive shaft 301, final drive shaft mount pad

4, disintegrating mechanism 401, crushing chamber

402, impeller of rotor 403, stator

404, material charging aperture 405, feed opening

406, material discharging opening 407, insulation jacket

5, transmission mechanism 501, big belt pulley

502, small belt pulley 503, driving belt

504, intermediate gearing 505, yielding coupling.

The specific embodiment

Below with reference to specific embodiment and Figure of description the utility model is described in further details.

As shown in Fig. 1 and Fig. 2, multistage circulating pulverizer of the present utility model, it comprises Vertical Rack 1, drive unit 2, transmission mechanism 5, final drive shaft 3 and is installed on disintegrating mechanism 4 on the Vertical Rack 1 more than two vertically, from top to bottom successively, Vertical Rack 1 is made up of base 101 and Rack Body 102, drive unit 2 adopts drive motors, and drive motors is fixed on the motor cabinet.The output of drive unit 2 links to each other with final drive shaft 3 by transmission mechanism 5, and final drive shaft 3 is fixed on the Vertical Rack 1 by final drive shaft mount pad 301.Impeller of rotor 402 and stator 403 that disintegrating mechanism 4 comprises crushing chamber 401 and is positioned at crushing chamber 401, impeller of rotor 402 is installed on the final drive shaft 3 and with final drive shaft 3 and rotates, the top of the top crushing chamber 401 offers material charging aperture 404, offer feed opening 405 between the adjacent crushing chamber 401, the bottom of below crushing chamber 401 offers material discharging opening 406.Impeller of rotor 402 is a cross multiple-blade rotor, stator 403 is to be fixed in fixed structure in the crushing chamber 401 as fence type around impeller of rotor 402, gap between impeller of rotor 402 and the stator 403 is bigger, be generally 5～10mm, guarantee like this impeller of rotor 402 when rotating at a high speed not can and stator 403 between friction and collision take place, thereby guarantee the safety of equipment operation.In the present embodiment, material charging aperture 404 is on the top of crushing chamber 401, by low-pressure area or negative pressuren zone near gravity and final drive shaft 3 axle center material is guided and is attracted in the first order crushing chamber 401, material discharging opening 406 is positioned on the tangential direction of below crushing chamber 401, guarantees the unimpeded of discharging.Feed opening 405 on the adjacent crushing chamber 401 staggers mutually, so just avoids material directly to drop down onto in the afterbody crushing chamber 401 from first order crushing chamber 401.The outside of crushing chamber 401 is provided with insulation jacket 407, and this insulation jacket 407 can adopt hot water thermal insulating.In the present embodiment, transmission mechanism 5 comprises big belt pulley 501, small belt pulley 502, driving belt 503, intermediate gearing 504 and yielding coupling 505, described small belt pulley 502 is fixed on the output shaft of drive unit 2, big belt pulley 501 is fixed in an end of intermediate propeller shaft on the intermediate gearing 504, the other end of intermediate propeller shaft links to each other with final drive shaft 3 by yielding coupling 505, and driving belt 503 is set around on big belt pulley 501 and the small belt pulley 502.

With processing ammonium nitrate powder is example, during work, by conveying worm that the ammonium nitrate powder is quantitatively reinforced to pulverizer material charging aperture 404, drive unit 2 slows down back drive pulverizer final drive shaft 3 with certain orientation and rotational speed by driving belt 503 transmissions, be installed on each impeller of rotor 402 and final drive shaft 3 interlocks on the final drive shaft 3, in crushing chamber 401, produce circulation air path and certain wind-force, the meal material enters through top crushing chamber material charging aperture 404, along circulation air path in the crushing chamber 401, high-speed impact stator 403 gear pieces and crushing chamber 401 inwalls of continuous several times under the effect of the wind-force that impeller of rotor 402 rotations are produced, and the mutual bump between the powder, thereby reach the efficient effect of pulverizing and mixing of powder.Powder enters next crushing chamber 401 after the repeatedly pulverizing of a crushing chamber 401 continues to pulverize, and to the last a crushing chamber 401 (discharging chamber) is blown out from material discharging opening 406 by air-flow after several times are pulverized.Entered collecting bin by the material after pulverizing and be collected, and some micro mists are collected through cyclone separator, thereby obtain ultra-fine micro mist material.

The above only is a preferred implementation of the present utility model, and protection domain of the present utility model also not only is confined to the foregoing description, and all technical schemes that belongs under the utility model thinking all belong to protection domain of the present utility model.Should be pointed out that for those skilled in the art in the some improvements and modifications that do not break away under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims

1. A multi-stage circulating pulverizer is characterized in that: it comprises a vertical frame (1), a driving device (2), a transmission mechanism (5), a main transmission shaft (3) and two or more , the pulverizing mechanism (4) that is installed on the vertical frame (1) successively from top to bottom, the output end of the described driving device (2) is connected with the main transmission shaft (3) through the transmission mechanism (5), the described The crushing mechanism (4) includes a crushing chamber (401) and a rotor impeller (402) and a stator (403) located in the crushing chamber (401), and the rotor impeller (402) is installed on the main drive shaft (3) and moves with the main drive shaft (3). The transmission shaft (3) rotates, and the top of the uppermost crushing chamber (401) is provided with a material feeding port (404), between adjacent crushing chambers (401) is provided with a feeding port (405), and the bottom crushing chamber (401) ) is provided with a material outlet (406) at the bottom.

2. The multi-stage circulating pulverizer according to claim 1, characterized in that: the material outlet (406) is located in the tangential direction of the lowest pulverization chamber (401).

3. The multi-stage circulating pulverizer according to claim 2, characterized in that: the feeding openings (405) on the adjacent pulverizing chambers (401) are staggered from each other.

4. The multi-stage circulation pulverizer according to claim 1, 2 or 3, characterized in that: a thermal insulation jacket (407) is provided on the outside of the pulverization chamber (401).

5. The multi-stage circulating pulverizer according to claim 1, 2 or 3, characterized in that: the transmission mechanism (5) includes a large pulley (501), a small pulley (502), a transmission belt (503), The intermediate transmission device (504) and the elastic coupling (505), the small pulley (502) is fixed on the output shaft of the driving device (2), and the large pulley (501) is fixed on the intermediate transmission device (504). One end of the shaft, the other end of the intermediate transmission shaft links to each other with the main transmission shaft (3) through an elastic coupling (505), and the transmission belt (503) is wound on the large pulley (501) and the small pulley (502).

6. The multi-stage circulating pulverizer according to claim 4, characterized in that: the transmission mechanism (5) includes a large pulley (501), a small pulley (502), a transmission belt (503), an intermediate transmission device ( 504) and an elastic coupling (505), the small pulley (502) is fixed on the output shaft of the driving device (2), and the large pulley (501) is fixed on one end of the middle transmission shaft on the middle transmission device (504), The other end of the intermediate drive shaft is connected with the main drive shaft (3) through an elastic coupling (505), and the drive belt (503) is wound around the large pulley (501) and the small pulley (502).