CN102441474B - Cyclonic jet mill - Google Patents
Cyclonic jet mill Download PDFInfo
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- CN102441474B CN102441474B CN 201110448308 CN201110448308A CN102441474B CN 102441474 B CN102441474 B CN 102441474B CN 201110448308 CN201110448308 CN 201110448308 CN 201110448308 A CN201110448308 A CN 201110448308A CN 102441474 B CN102441474 B CN 102441474B
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Abstract
The invention discloses a cyclonic jet mill. The jet mill mainly comprises a grader installed on a crushing box; the crushing box is provided with a crushing cavity which is driven by a power unit and is rotatably installed in the crushing box; the crushing cavity comprises an inner column which has a crushing space, an outer column is hermetically installed at the periphery of the inner column, an air flow channel which communicates with a compressed air source is arranged between the inner column and the outer column, an air flow nozzle is provided on the sidewall of the inner column and communicates with the air flow channel and the crushing space. The cyclonic jet mill provided in the invention overcomes the technical problems of formation of a dead space where air flow cannot reach in the crushing space and insufficient crushing of materials, has a reasonable design and is widely applied in ultrafine crushing of raw mineral materials, chemical raw material, heat sensitive substances and the like.
Description
Technical field
The present invention relates to a kind of solid material reducing mechanism, relate in particular to a kind of cyclonic jet mill of comminuted solids material.
Background technology
At present airslide disintegrating mill has severally, comprises target formula, collision type, flat, circulating tube type, fluidized bed type, and their pulverization principle is: material enters comminuting space, is subject to violent collision, friction and pulverizes at the air-flow point.But the max architecture defective that the version of these several airslide disintegrating mills exists is exactly air current spray nozzle and comminuting space all is changeless, material enters comminuting space from fixing direction, air current spray nozzle is injected supersonic airstream from fixing direction, be subjected to the impact of the factors such as material proportion, granular size, hardness, the material that enters comminuting space can not be pulverized by supersonic airstream in time, form easily and pulverize the dead angle, idle operation appears in the part supersonic airstream, so this shortcoming that several airslide disintegrating mill ubiquity crush efficiencies are low, energy consumption is high.
Summary of the invention
Technical problem to be solved by this invention is: a kind of cyclonic jet mill is provided, with solve can form in the comminuting space air-flow blow less than the dead angle, material can not get the technical problem fully pulverized.
For solving the problems of the technologies described above, technical scheme of the present invention is: cyclonic jet mill, comprise the grader that is installed on the crush box, be provided with in the described crush box by power set and drive and rotate the pulverizing cavity that is installed in the described crush box, described pulverizing cavity comprises the inner barrel with comminuting space, the periphery of described inner barrel is sealed and installed with outer cylinder body, be provided with the gas channel that is connected with compressed air source between described inner barrel and the outer cylinder body, the sidewall of described inner barrel is provided with air current spray nozzle, and described air current spray nozzle is communicated with described gas channel and comminuting space.
As a kind of improvement, the casing of described crush box and the housing of described grader are fixedly installed togather, be provided with the air inlet gap between described inner barrel and the grader housing, form secondary air duct between the casing of described outer cylinder body and crush box, described air inlet gap is communicated with described secondary air duct and comminuting space, and the casing of described pulverizing casing is provided with the secondary air inlet mouth.
Improve as another kind, be installed with the power transmission shaft of hollow on the described outer cylinder body, described power transmission shaft is coaxial and pass the casing of described crush box with the centre of gyration of pulverizing cavity, the part that described power transmission shaft passes described casing connects described power set, the end that described power transmission shaft passes described casing connects compressed air source, an end that is positioned at described casing on the described power transmission shaft is provided with through hole, and described through hole is communicated with described gas channel and compressed air source.
As further improvement, the end movable sealing that described power transmission shaft passes described casing connects the fixed axis of a hollow, and the hollow bulb of described fixed axis is connected with the hollow bulb of described power transmission shaft, and described fixed axis connects described compressed air source.
As further improvement, described air current spray nozzle at least one pair of and be oppositely arranged in twos.
Adopted technique scheme, the invention has the beneficial effects as follows: be installed in the crush box owing to pulverize the cavity rotation, air current spray nozzle adopts rotary operation, the material that enters in the comminuting space can be in time by supersonic jet mill, so that comminuting space is interior without the dead angle, crush box is interior without material stock, material can improve stroke speed in comminuting space, reach the effect of how broken few mill, reduced energy consumption, improved crush efficiency; Material is pulverized the effect of cavity rotary centrifugal force in comminuting space, can produce grading, is conducive to meet the requirements of fine powder and in time enters the top grader and carry out classification, has avoided crossing and has pulverized.
Can adjust rotary speed according to material characteristic, great such as material ratio, rotary speed will improve; Require height such as the finish fineness of pulverizing, rotary speed will improve; Material hardness is high, and rotary speed will improve; Otherwise then turn down rotating speed, in a word, can adjust to best pulverizing state according to raw material granularity, raw material proportion, hardness, finish fineness.
Owing to be provided with the air inlet gap between inner barrel and the grader housing; the casing of pulverizing casing is provided with the secondary air inlet mouth; during work; under the effect of grader and air current spray nozzle; form negative pressure in the comminuting space; secondary air has been exempted movable sealing between inner barrel and the grader housing so that dust can not revealed, and has protected operating environment.
Because power transmission shaft separates with comminuting space, increased the service life of drive disk assembly, bearing especially, dust can not enter bearing, has greatly prolonged the service life of bearing, has reduced the maintenance of drive disk assembly.
Description of drawings
Accompanying drawing is the structural representation of the embodiment of the invention;
Among the figure: 1, grader, 2, the grader housing, 3, pulverize cavity, 4, casing, 5, outer cylinder body, 6, inner barrel, 7, air current spray nozzle, 8, the secondary air inlet mouth, 9, power transmission shaft, 10, gas channel, 11, fixed axis, 12, secondary air duct, 13, motor, 14, discharging opening.
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples.
As shown in drawings, a kind of cyclonic jet mill, comprise the grader 1 that is installed on the crush box, be provided with in the described crush box by power set and drive and rotate the pulverizing cavity 3 that is installed in the described crush box, described power set are preferably motor 13, described pulverizing cavity 3 comprises the inner barrel 6 with comminuting space, the periphery of described inner barrel 6 is sealed and installed with outer cylinder body 5, be provided with the gas channel 10 that is connected with compressed air source between described inner barrel 6 and the outer cylinder body 5, the sidewall of described inner barrel 6 is provided with air current spray nozzle 7, and described air current spray nozzle 7 is communicated with described gas channel 10 and comminuting space.Described air current spray nozzle 7 at least one pair of and be oppositely arranged in twos, described air current spray nozzle 7 has your superonic flow nozzzle and two kinds of structures of tapering type superonic flow nozzzle of daraf(reciprocal of farad) usually, can dispose according to the material difference.
The casing 4 of described crush box is fixedly installed togather with the housing of described grader 1, be provided with the air inlet gap between described inner barrel 6 and the grader housing 2, form secondary air duct 12 between the casing 4 of described outer cylinder body 5 and crush box, described air inlet gap is communicated with described secondary air duct 12 and comminuting space, and the casing 4 of described pulverizing casing 4 is provided with secondary air inlet mouth 8.
Be installed with the power transmission shaft 9 of hollow on the described outer cylinder body 5, described power transmission shaft 9 is coaxial and pass the casing 4 of described crush box with the centre of gyration of pulverizing cavity 3, the part that described power transmission shaft 9 passes described casing 4 connects described motor 13, usually, on the power transmission shaft 9 belt pulley is installed, belt pulley also is installed on the motor 13, be in transmission connection together by band between the two, the end that described power transmission shaft 9 passes described casing 4 connects compressed air source, an end that is positioned at described casing 4 on the described power transmission shaft 9 is provided with through hole, and described through hole is communicated with described gas channel 10 and compressed air source.
The end movable sealing that described power transmission shaft 9 passes described casing 4 connects the fixed axis 11 of a hollow, the hollow bulb of described fixed axis 11 is connected with the hollow bulb of described power transmission shaft 9, described fixed axis 11 connects described compressed air source, relatively rotate between fixed axis 11 and the power transmission shaft 9, its sealing means is common movable sealing.Certainly, also can adopt swivel joint common on the market to be installed in the end of power transmission shaft 9, swivel joint connects compressed air source again, equally also can realize.
Its course of work is as follows:
Compressed air is through supercooling, filter, after the drying, entered the power transmission shaft 9 of hollow by the fixed axis 11 of hollow, through hole through power transmission shaft 9 ends, enter the gas channel 10 between outer cylinder body 5 and the inner barrel 6, form supersonic airstream through air current spray nozzle 7, inject comminuting space, motor 13 drives and pulverizes cavity 3 rotations simultaneously, contain solid particle and entered in the housing of grader 1 by charging aperture this moment, enter the comminuting space of rotation cavity along the housing of grader 1, the material that is accelerated several in twos the positioned opposite jet-stream wind joint that gets air current spray nozzle 7 converge, produce violent collision, friction, shear, and reach the ultra-fine grinding of particle.The air-flow that material after the pulverizing is risen is delivered in grader 1 graded region, under the effect of grading wheel centrifugal force and air-introduced machine draft, realize the separation of thickness powder, meal returns comminuting space continuation pulverizing according to the gravity of self along grader housing 2, qualified fine powder enters cyclone collector with air-flow by discharging opening 14, fine dust is collected by sack cleaner, purified gas is discharged by air-introduced machine, the air-flow that wherein rises is under the effect of grader 1 and air current spray nozzle 7, form negative pressure in the comminuting space, and be aided with the secondary air system and jointly form, wherein, the secondary air system comprises secondary air inlet mouth 8 and secondary air duct 12.The speed of rotation cavity can be according to material proportion, granular size, the different adjustment of hardness.
The present invention is not limited to above-mentioned concrete embodiment, for example, with in the past flat, target formula, the comminuting space of spray formula or fluidized bed airflow pulverizer is transformed to the rotation comminuting space, also can reach close effect.Those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, all conversion of having done all drop within protection scope of the present invention.
Claims (4)
1. cyclonic jet mill, comprise the grader that is installed on the crush box, it is characterized in that: be provided with in the described crush box by power set and drive and rotate the pulverizing cavity that is installed in the described crush box, described pulverizing cavity comprises the inner barrel with comminuting space, the periphery of described inner barrel is sealed and installed with outer cylinder body, be provided with the gas channel that is connected with compressed air source between described inner barrel and the outer cylinder body, the sidewall of described inner barrel is provided with air current spray nozzle, described air current spray nozzle is communicated with described gas channel and comminuting space, be installed with the power transmission shaft of hollow on the described outer cylinder body, described power transmission shaft is coaxial and pass the casing of described crush box with the centre of gyration of pulverizing cavity, the part that described power transmission shaft passes described casing connects described power set, the end that described power transmission shaft passes described casing connects compressed air source, an end that is positioned at described casing on the described power transmission shaft is provided with through hole, and described through hole is communicated with described gas channel and compressed air source.
2. cyclonic jet mill as claimed in claim 1, it is characterized in that: the casing of described crush box and the housing of described grader are fixedly installed togather, be provided with the air inlet gap between described inner barrel and the grader housing, form secondary air duct between the casing of described outer cylinder body and crush box, described air inlet gap is communicated with described secondary air duct and comminuting space, and the casing of described pulverizing casing is provided with the secondary air inlet mouth.
3. cyclonic jet mill as claimed in claim 1, it is characterized in that: the end movable sealing that described power transmission shaft passes described casing connects the fixed axis of a hollow, the hollow bulb of described fixed axis is connected with the hollow bulb of described power transmission shaft, and described fixed axis connects described compressed air source.
4. such as claim 1 or 2 or 3 described cyclonic jet mills, it is characterized in that: described air current spray nozzle at least one pair of and be oppositely arranged in twos.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110448308 CN102441474B (en) | 2011-12-28 | 2011-12-28 | Cyclonic jet mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110448308 CN102441474B (en) | 2011-12-28 | 2011-12-28 | Cyclonic jet mill |
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| Publication Number | Publication Date |
|---|---|
| CN102441474A CN102441474A (en) | 2012-05-09 |
| CN102441474B true CN102441474B (en) | 2013-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110448308 Active CN102441474B (en) | 2011-12-28 | 2011-12-28 | Cyclonic jet mill |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102935403A (en) * | 2012-09-03 | 2013-02-20 | 神华集团有限责任公司 | Opposed jet mill sorter having modification function and mill sorting system |
| CN103752388B (en) * | 2014-01-12 | 2016-02-10 | 上海红箭自动化设备有限公司 | Environment-friendly and energy-efficient eddy mill |
| CN108597846B (en) * | 2018-06-06 | 2020-03-31 | 京磁材料科技股份有限公司 | Target type jet mill and method for preparing economical sintered neodymium iron boron blank |
| CN112354656A (en) * | 2020-10-21 | 2021-02-12 | 中鸿纳米纤维技术丹阳有限公司 | Nano fluidized bed structure for crushing processing of nano particles |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB432191A (en) * | 1933-10-09 | 1935-07-22 | Internat Pulverizing Corp | Improvements in or relating to the pulverizing of minerals and similar materials |
| DE3140294C2 (en) * | 1981-10-10 | 1983-11-17 | Alpine Ag, 8900 Augsburg | Method and device for separating a material mixture into components of different grindability |
| CN1032957C (en) * | 1993-11-29 | 1996-10-09 | 徐宝东 | Airflow jet mill |
| CN2231136Y (en) * | 1995-10-06 | 1996-07-17 | 连祺祥 | Crushing and grading device for air flow crusher |
| CN2259946Y (en) * | 1996-05-30 | 1997-08-20 | 林业部林产工业设计院临安化工制剂厂 | Ball-target and air flowing type disintegrating machine |
| JP4464696B2 (en) * | 2003-01-23 | 2010-05-19 | 株式会社リコー | Powder grinding classification system and powder grinding classification method |
| CN201061764Y (en) * | 2007-07-26 | 2008-05-21 | 济南大学 | Rotating nozzle type airflow crashing device |
| CN202377068U (en) * | 2011-12-28 | 2012-08-15 | 潍坊正远粉体工程设备有限公司 | Cyclonic jet mill |
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Denomination of invention: Cyclonic jet mill Effective date of registration: 20200403 Granted publication date: 20131030 Pledgee: Weifang Bank Co., Ltd. Weifang High-tech Branch Pledgor: WEIFANG ZHENGYUAN POWDER ENGINEERING EQUIPMENT Co.,Ltd. Registration number: Y2020980001254 |