CN114713349A - Fluidized bed type air flow crusher integrating differential pressure crushing and air explosion crushing - Google Patents
Fluidized bed type air flow crusher integrating differential pressure crushing and air explosion crushing Download PDFInfo
- Publication number
- CN114713349A CN114713349A CN202110015021.0A CN202110015021A CN114713349A CN 114713349 A CN114713349 A CN 114713349A CN 202110015021 A CN202110015021 A CN 202110015021A CN 114713349 A CN114713349 A CN 114713349A
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- Prior art keywords
- air
- gas
- crushing
- fluidized bed
- hopper
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Links
- 238000004880 explosion Methods 0.000 title claims abstract description 14
- 239000007921 spray Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 22
- 238000000034 method Methods 0.000 description 7
- 238000010298 pulverizing process Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000005514 two-phase flow Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/06—Jet mills
- B02C19/068—Jet mills of the fluidised-bed type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Disintegrating Or Milling (AREA)
Abstract
A fluidized bed type airflow crusher integrating differential pressure crushing and air explosion crushing comprises a hopper (1), an air bag (5) and a crusher (6), wherein an air ring (7) is arranged in the crusher (6), the top of the air bag (5) is connected with the bottom of the hopper (1), a compressed air inlet (4) is formed in the side surface of the air bag (5), the bottom of the air bag (5) is communicated with the air ring (7) in the crusher (6) through a pipeline, air distributing pipes (8) are oppositely arranged at two ends of the air ring (7), and a laval spraying pipe (9) is installed on each air distributing pipe (8); a valve I (2) and a valve II (3) are arranged between the air bag (5) and the hopper (1). The yield under the condition of the same energy consumption is greatly improved, the production cost of enterprises is effectively reduced, and a good foundation is laid for the wider application of the jet mill.
Description
Technical Field
The invention relates to a pulverizer, in particular to a fluidized bed type jet pulverizer integrating differential pressure crushing and gas explosion crushing, and belongs to the technical field of powder crushing technology and equipment.
Background
At present, along with the development of times, the jet mill is continuously updated, and the grinding particle size of materials is also continuously reduced. However, a compressed air inlet of the existing fluidized bed airflow pulverizer, which enters a pulverizing cavity, is separated from a material inlet, the airflow drives materials to collide with each other at a junction to realize pulverization, the materials are always positioned on the outer ring of an airflow belt in the airflow acceleration process, collision energy is dispersed, and the influence on the materials is small when an air explosion phenomenon occurs; therefore, the problems of high energy consumption and low yield always exist, and the energy consumption problem becomes the biggest obstacle for further popularization and application of the jet mill.
Disclosure of Invention
The present invention is directed to solving the above problems of the prior art, and an object of the present invention is to provide a fluidized bed type jet mill which integrates differential pressure crushing and gas explosion crushing.
In order to achieve the purpose, the technical solution of the invention is as follows: the utility model provides an integrated broken fluidized bed formula fluid energy mill with gas explosion breakage of pressure differential, includes hopper, gas bag, rubbing crusher in be provided with the gas ring, gas bag top be connected with the hopper bottom, the gas bag survey the face and be provided with the compressed air entry, the gas ring in pipeline and the rubbing crusher is linked together through the bottom of gas bag, gas ring both ends be provided with the gas distribution pipe in opposite directions, the gas distribution pipe on install the laval spray tube.
And a valve I and a valve II are arranged between the air bag and the hopper.
Compared with the prior art, the invention has the beneficial effects that:
compared with the traditional fluidized bed jet mill, the jet mill has the advantages that 2 times of crushing processes are added in the crushing process under the working condition of the same energy consumption, and the 3 rd crushing effect is better than that of the traditional fluidized bed jet mill, so that the capacity is greatly improved under the condition of the same energy consumption, the production cost of enterprises is effectively reduced, and a good foundation is laid for the wider application of the jet mill.
Drawings
FIG. 1 is a schematic diagram of the present invention.
FIG. 2 is a schematic view of the structure of the gas ring of the present invention.
In the figure: hopper 1, valve I2, valve II 3, compressed air inlet 4, gas bag 5, rubbing crusher 6, gas ring 7, gas-distributing pipe 8, laval spray tube 9.
Detailed Description
The invention is described in further detail below with reference to the following description of the drawings and the detailed description.
Referring to fig. 1 to 2, the fluidized bed type jet mill integrating differential pressure crushing and gas explosion crushing comprises a hopper 1, an air bag 5 and a crusher 6, wherein an air ring 7 is arranged in the crusher 6. The top of the air bag 5 is connected with the bottom of the hopper 1, a compressed air inlet 4 is formed in the side, measured by the air bag 5, of the bottom of the air bag 5 is communicated with an air ring 7 in the pulverizer 6 through a pipeline, air distributing pipes 8 are oppositely arranged at two ends of the air ring 7, and laval spraying pipes 9 are installed on the air distributing pipes 8.
Referring to fig. 1 to 2, a valve i 2 and a valve ii 3 are arranged between the air bag 5 and the hopper 1.
Referring to fig. 1 to 2, the compressed air and the material of the fluidized bed air flow pulverizer enter a pulverizing cavity in the pulverizer 6 through a common channel, when the fluidized bed air flow pulverizer works, the material and the compressed air (with the pressure of 0.5-1.0 MPa) are mixed in an air bag, and the material enters the pulverizer 6 along with high-pressure air flow. The specific process is as follows: the material enters the air bag 5 in a closed mode through the alternate switch of the valve I2 and the valve II 3, the material is in an isobaric state inside and outside the material under the action of high-pressure gas in the flowing process of the material in the air bag 5, and the material passes through the air ring 7 at a high speed in a gas-solid two-phase flow mode and enters the air distribution pipes 8 which are arranged in opposite directions, and finally enters the cavity of the pulverizer 6 through the laval nozzle 9 at a speed of Mach 2-3. The materials enter a relatively open environment after passing through the laval nozzle 9, the outer layer pressure of the materials is instantly reduced, the internal pressure is not released soon, the materials are still in a high-pressure state, and the materials are disintegrated under the action of pressure difference, so that the first crushing is realized; the material generates violent gas explosion after breaking through the sound velocity through the laval nozzle 9 in an accelerating way, the material vibrates at high frequency in the gas explosion process, and the material is crushed for the second time under the action of the high-frequency vibration; the materials finally collide with each other at the intersection points in the crushing cavity of the crusher 6 in the form of gas-solid two-phase flow, so that the third crushing is realized. Therefore, on the basis of the traditional fluidized bed type jet mill, the fluidized bed type jet mill integrating differential pressure crushing and gas explosion crushing has the advantages that by introducing the theory of differential pressure variation crushing inside and outside an object and gas explosion crushing of supersonic airflow, in the crushing process, because materials collide with each other by uniformly distributed gas-solid two-phase flow, the collision energy is concentrated, the collision strength is high, the defects of high energy consumption and low capacity of the jet mill are overcome, under the working condition of the same energy consumption, the crushing efficiency is obviously improved, and the capacity is greatly improved.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention relates, several simple deductions or substitutions may be made without departing from the spirit of the invention, and the above-mentioned structures should be considered as belonging to the protection scope of the invention.
Claims (2)
1. The utility model provides an integrated broken fluidized bed formula fluid energy mill with gas explosion breakage of pressure differential, includes hopper (1), gas bag (5), rubbing crusher (6) in be provided with gaseous ring (7), its characterized in that: gas bag (5) top be connected with hopper (1) bottom, gas bag (5) survey the face and are provided with compressed air entry (4), the bottom of gas bag (5) is linked together through gas ring (7) in pipeline and rubbing crusher (6), gas ring (7) both ends be provided with gas-distributing pipe (8) in opposite directions, gas-distributing pipe (8) on install laval spray tube (9).
2. The integrated differential pressure and gas explosion crushing fluidized bed type jet mill according to claim 1, wherein: a valve I (2) and a valve II (3) are arranged between the air bag (5) and the hopper (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110015021.0A CN114713349A (en) | 2021-01-06 | 2021-01-06 | Fluidized bed type air flow crusher integrating differential pressure crushing and air explosion crushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110015021.0A CN114713349A (en) | 2021-01-06 | 2021-01-06 | Fluidized bed type air flow crusher integrating differential pressure crushing and air explosion crushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114713349A true CN114713349A (en) | 2022-07-08 |
Family
ID=82233927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110015021.0A Pending CN114713349A (en) | 2021-01-06 | 2021-01-06 | Fluidized bed type air flow crusher integrating differential pressure crushing and air explosion crushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114713349A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2192384Y (en) * | 1994-10-06 | 1995-03-22 | 王宝芬 | Ultramicro-smash grading device of fluid-bed |
| US20020054995A1 (en) * | 1999-10-06 | 2002-05-09 | Marian Mazurkiewicz | Graphite platelet nanostructures |
| CN1621185A (en) * | 2004-12-10 | 2005-06-01 | 华东理工大学 | Method and apparatus for preparing superfine powder by super high pressure supercritical fluid micro jetting technology |
| CN201988430U (en) * | 2011-01-12 | 2011-09-28 | 成都坤森微纳科技有限公司 | Fluidized bed jet mill grader |
| CN206334745U (en) * | 2016-12-21 | 2017-07-18 | 杜伊凡 | It is a kind of that there is the fluidized bed air flow crushing device that may move jet pipe |
| CN107837923A (en) * | 2017-10-24 | 2018-03-27 | 廊坊新龙立机械制造有限公司 | A kind of fluidized bed air flow crusher and airflow pulverization method |
| CN207371670U (en) * | 2017-10-13 | 2018-05-18 | 深圳科创粉体装备技术有限公司 | A kind of board-like supersonic jet mill of horizontal impact |
| CN110479455A (en) * | 2019-08-28 | 2019-11-22 | 安徽科技学院 | A kind of crushing device for processing ultrapure quartz sand |
-
2021
- 2021-01-06 CN CN202110015021.0A patent/CN114713349A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2192384Y (en) * | 1994-10-06 | 1995-03-22 | 王宝芬 | Ultramicro-smash grading device of fluid-bed |
| US20020054995A1 (en) * | 1999-10-06 | 2002-05-09 | Marian Mazurkiewicz | Graphite platelet nanostructures |
| CN1621185A (en) * | 2004-12-10 | 2005-06-01 | 华东理工大学 | Method and apparatus for preparing superfine powder by super high pressure supercritical fluid micro jetting technology |
| CN201988430U (en) * | 2011-01-12 | 2011-09-28 | 成都坤森微纳科技有限公司 | Fluidized bed jet mill grader |
| CN206334745U (en) * | 2016-12-21 | 2017-07-18 | 杜伊凡 | It is a kind of that there is the fluidized bed air flow crushing device that may move jet pipe |
| CN207371670U (en) * | 2017-10-13 | 2018-05-18 | 深圳科创粉体装备技术有限公司 | A kind of board-like supersonic jet mill of horizontal impact |
| CN107837923A (en) * | 2017-10-24 | 2018-03-27 | 廊坊新龙立机械制造有限公司 | A kind of fluidized bed air flow crusher and airflow pulverization method |
| CN110479455A (en) * | 2019-08-28 | 2019-11-22 | 安徽科技学院 | A kind of crushing device for processing ultrapure quartz sand |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220708 |