CN109453998B - High-precision airflow winnowing machine - Google Patents
High-precision airflow winnowing machine Download PDFInfo
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- CN109453998B CN109453998B CN201811582849.9A CN201811582849A CN109453998B CN 109453998 B CN109453998 B CN 109453998B CN 201811582849 A CN201811582849 A CN 201811582849A CN 109453998 B CN109453998 B CN 109453998B
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- pipe
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- 239000000843 powder Substances 0.000 claims abstract description 74
- 238000007664 blowing Methods 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 38
- 238000007670 refining Methods 0.000 claims abstract description 27
- 238000007599 discharging Methods 0.000 claims abstract description 18
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 27
- 239000006185 dispersion Substances 0.000 claims description 16
- 238000000926 separation method Methods 0.000 claims description 16
- 239000008187 granular material Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 abstract description 20
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 2
- 238000000265 homogenisation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
- B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
- B07B7/083—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes
Landscapes
- Combined Means For Separation Of Solids (AREA)
Abstract
A high-precision airflow winnowing machine comprises a fixed support, a classifying bin, an air classifying wheel, a feeding and dispersing refining pointed cone, a steady-state refining straight-moving ring, a combined feeding blowing pipe, a mixing blanking cone, a falling back blowing device, a separating material discharging inclined cone, a driving device and a rotating shaft, wherein the driving device is arranged at the top end of the upper part of the classifying bin, and an output shaft of the driving device penetrates through the classifying bin to be connected with a shaft of the air classifying wheel. The high-precision airflow winnowing machine overcomes the defects that the dispersibility is poor and agglomerated particles are not effectively separated when the fine powder superfine powder enters a grading cavity for grading, so that the fine powder superfine powder is more beneficial to grading; moreover, the cutting grain size of the winnowing machine is more accurate, and the efficiency of the machine is higher.
Description
Technical Field
The invention relates to a high-precision airflow winnowing machine which is suitable for grading the granularity of fine powder ultrafine powder particles.
Background
The air classification of the fine powder ultrafine powder particles is an indispensable part of the ultrafine powder grinding process. The fine powder ultrafine powder produced by a mechanical method has wide distribution range of material particle fineness, but has high requirements on homogenization of products along with the rapid development of modern industry. The superfine powder product is required to be in a certain particle size distribution range; and the fine powder ultrafine powder particles meeting the requirements are required to be separated from the superfine material mixture of the fine powder materials quickly in time.
The known winnowing machine consists of a feeding pipe, a classifying wheel, a discharging pipe, a bearing seat power, and other mechanism accessories. The material is pumped into the classifying cavity from the feeding pipe, the material is not uniformly distributed in the classifying cavity, namely, the uniform dispersivity of the material is not good, part of fine powder and ultrafine powder are sucked from the discharging pipe after being centrifugally classified by the classifying wheel, and agglomerated particles are discharged from the discharging pipe. The agglomerated particles are mixed together by fine powder ultrafine powder and coarse powder. The wide structure can also realize certain fineness classification of products; however, the superfine powder particles are often mixed with a few large particles, and the distribution range of the fineness of the materials is larger, so that the superfine powder is not suitable for the lean requirements of modern industry on products.
Disclosure of Invention
The invention aims to design a high-precision airflow winnowing machine, which overcomes the defects of poor dispersibility and no effective separation of agglomerated particles when fine powder and ultrafine powder enter a classification cavity for classification; the fine powder ultrafine powder is more beneficial to classification; moreover, the cutting grain size of the winnowing machine is more accurate, and the efficiency of the machine is higher.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
a high precision airflow fanning machine, comprising:
the fixed support is of a mutually supporting frame structure;
the grading bin is cylindrical and is arranged at the upper end of the fixed support, the center of the top of the grading bin is provided with a mounting through hole and a fixed pipe thereof, and one side of the fixed pipe is provided with a grading fine material superfine material discharging pipe; the lower end of the grading bin is provided with an opening;
the driving device is arranged at the upper end of the fixed pipe at the mounting through hole at the top of the grading bin, and an output shaft of the driving device penetrates through the mounting through hole;
the air sorting classification wheel is positioned in the classification bin and comprises a rotating shaft, an upper disc and a lower disc which are arranged on the rotating shaft, and a plurality of wind shielding grille blades which are arranged between the upper disc and the lower disc, are angled with the axis of the rotating shaft and are equidistantly arranged; the upper end of the rotating shaft is connected with an output shaft of the driving device through a coupler;
the air separation classifying wheel is characterized in that the air separation classifying wheel comprises a feeding, dispersing and homogenizing pointed cone, wherein a plurality of dispersing blades are arranged on the pointed cone inclined surface of the feeding, dispersing and homogenizing pointed cone at equal intervals;
the steady-state material-homogenizing straight-moving ring is arranged on the inner wall of the classifying bin and is positioned at the middle lower part of the winnowing classifying wheel, the inner wall of the steady-state material-homogenizing straight-moving ring is arc-shaped, and a plurality of guide blades are equidistantly arranged on the inner wall along the circumferential direction and correspond to the wind-shielding material-blocking grid blades of the winnowing classifying wheel;
the combined feeding blowing pipe is arranged at the center position below the dispersing and homogenizing cone, the feeding pipe is smoothly bent to form a vertical pipe which extends below the dispersing and homogenizing cone, the top of the combined feeding blowing pipe is provided with a powder and granular material uniform dispersing straight-running bell mouth, and the inner wall of the bell mouth is provided with a plurality of dispersing blades at equal intervals along the circumferential direction;
the mixing and blanking cone is arranged at the lower part of the classifying bin and is a ring cone-shaped and angle cone ring body; the upper port of the device is connected with the lower port of the grading bin;
the back-falling back-blowing device is of a double-flange ring structure and is arranged at the center position of the lower part of the mixing blanking cone, an upper port of the back-falling back-blowing device is connected with a lower port of the mixing blanking cone through a flange, the back-falling back-blowing device is a combined pipe cavity, any position of the side surface of the back-falling back-blowing device is symmetrically provided with a reverse air inlet pipe respectively, and two opposite-blowing rotating cavities which accord with Archimedes spiral involute are arranged in the back-falling back-blowing device;
the upper end of the separation material discharging inclined cone is connected with the lower port of the return blowing device, and the lower port of the separation material discharging inclined cone is a separation material outlet.
Preferably, the inner wall of the steady-state refining straight-moving ring is provided with straight-moving guide blades, and the distance between the guide blades and the outer edge of the winnowing classifying wheel is 80-100 mm.
Preferably, the inner wall of the bell mouth of the feeding blowing pipe is provided with anti-rotation equal grid blades, and the distance between the outlet end of the inner wall of the bell mouth and the feeding dispersing and homogenizing pointed cone is 25-35 mm.
Preferably, the inner wall of the steady-state refining straight-moving ring is arc-shaped, and the arc extension tangent line of the upper end of the steady-state refining straight-moving ring is not higher than the feeding position at the top end of the winnowing classification wheel.
Preferably, the tip angle of the feed dispersion refining tip cone is 60 degrees plus or minus 10 degrees.
Preferably, the wind shielding material blocking grille blades of the wind sorting wheel are axially divided into three areas.
Further, the upper end of the air separation classifying wheel is provided with a sealing leakage-proof powder ring body, and the edge of the upper end face of the sealing leakage-proof powder ring body is convexly provided with two circles of sealing strips; a sealing disc is arranged at the bottom of the upper end face in the grading bin, which corresponds to the mounting through hole, the sealing disc is a ring body matched with the mounting through hole, a circle of fixing strips are arranged on the outer side of the lower end face of the sealing disc in a protruding mode along the circumferential direction, two annular slots matched with the sealing strips are arranged in the middle of the lower end face of the fixing strips along the circumferential direction, and the sealing strips are inserted into the annular slots to form a double-slot rotary sealing structure.
And a hoop fixed ring is arranged at the bottom end of the winnowing classifying wheel, and the upper end of the feeding dispersion material spike cone is connected with the hoop fixed ring.
Preferably, the driving device comprises a variable frequency motor, and an output shaft of the variable frequency motor is connected with a rotating shaft of the air classification wheel through a connecting seat and a bearing seat.
In the structure of the winnowing classifier, equidistant dispersing blades are arranged at the bottom of a classifying wheel, a horn-shaped dispersing opening is arranged at the outlet of a blowing feeding pipe, straight guide blades are arranged on the inner wall of the horn opening, a steady-state refining straight-moving ring is arranged in the middle of a classifying bin, the steady-state refining straight-moving ring is arc-shaped, and the arc tangent line extension line at the upper end of the steady-state refining straight-moving ring does not exceed the feeding position at the top end of the classifying wheel. And a back-falling back-blowing device is arranged at the lower end of the mixing and blanking cone. When fine powder ultrafine powder is sucked into a feeding blowing pipe, the fine powder ultrafine powder is uniformly scattered and thrown to the periphery through a material homogenizing sharp cone of a classifying wheel, the fine powder ultrafine powder is prevented from rotating through equidistant blades in a horn mouth, the fine powder ultrafine powder is uniformly flushed to a classifying area along the horn mouth through the blades, the material is dispersed to a steady-state material homogenizing straight-moving ring of the classifying area through the horn mouth of the feeding blowing pipe, at the moment, the material is not allowed to synchronously rotate along with the classifying wheel in the outer circumferential range of the air classification classifying wheel, the material enters a centrifugal airflow classifying field along the guiding straight-moving ring, the fine powder ultrafine powder meeting the granularity requirement is classified through the airflow field of the classifying wheel according to centrifugal force and airflow suction, most of fine powder ultrafine powder meeting the granularity requirement is sucked into the classifying wheel through a discharging pipe, the fine powder and the aggregate adhered to the aggregate falls to a return blowing device from the classifying area, the fine powder and the aggregate which are not classified are conveyed to the classifying area through a blanking cone, the fine powder contained in the coarse powder is blown to the classifying area again through the return blowing device, the fine powder contained in the air is blown to the classifying area along the guiding straight-moving ring, enters the classifying wheel, the fine powder is sucked by the airflow field according to the requirement, and the fine powder is repeatedly repeated.
The invention has the beneficial effects that:
the invention ensures that the fine powder ultrafine powder has better uniform dispersivity during classification, and effectively ensures that the fine powder ultrafine powder enters a classification wheel, the centrifugal airflow classifying field is directly entered, but not rotationally entered, is not thrown away by the centrifugal force of the centrifugal airflow classifying field, and is more beneficial to the stability of the centrifugal airflow classifying field; the size of the separated particles is more uniform and stable due to the stability of the grading air flow field. The blowback device ensures the sorting effectiveness of the classified materials.
Drawings
Fig. 1 is a perspective view of an embodiment of the present invention.
Fig. 2 is a front view of an embodiment of the present invention.
Fig. 3 is a cross-sectional view A-A of fig. 2.
Fig. 4 is a partial perspective view of fig. 1 according to an embodiment of the present invention.
Fig. 5 is a partial perspective view of an embodiment of the present invention in fig. 2.
Fig. 6 is a schematic structural diagram of a stroke separation wheel, a steady-state refining straight running ring and a combined feed blowing pipe in an embodiment of the invention.
Fig. 7 is a schematic structural diagram of a blowback apparatus in an embodiment of the present invention.
Fig. 8 is an enlarged schematic view of the portion B in fig. 3.
Detailed Description
Referring to fig. 1 to 8, a high-precision air flow fanning machine of the present invention includes,
the fixed bracket 1 is a mutually supporting frame structure;
the grading bin 2 is cylindrical and is arranged at the upper end of the fixed support 1, the center of the top of the grading bin is provided with a mounting through hole 201 and a fixed pipe 202 thereof, and one side of the fixed pipe 202 is provided with a grading fine material superfine material discharging pipe 203; the lower end of the grading bin 2 is opened;
the driving device 10 is arranged at the upper end of a fixed pipe 202 at a mounting through hole 201 at the top of the grading bin 2, and an output shaft of the driving device passes through the mounting through hole 201;
the air classification wheel 3 is positioned in the classification bin 2 and comprises a rotating shaft 31, an upper disc 32, a lower disc 33 and a plurality of windshield material grating blades 34, wherein the upper disc 32 and the lower disc 33 are arranged on the rotating shaft 31, and the windshield material grating blades 34 are arranged between the upper disc 32 and the lower disc 33, are angled with the axis of the rotating shaft 31 and are equidistantly arranged; the upper end of the rotating shaft 31 is connected with an output shaft of the driving device 10 through a coupler;
the feed dispersion and homogenization pointed cone 4 is arranged at the lower part of the winnowing classification wheel 3, and a plurality of dispersing blades 41 are arranged on the pointed cone inclined surface of the feed dispersion and homogenization pointed cone 4 at equal intervals;
the steady-state material-homogenizing straight-moving ring 5 is arranged on the inner wall of the classifying bin 2 and is positioned at the middle lower part of the air separation classifying wheel 3, the inner wall of the steady-state material-homogenizing straight-moving ring is arc-shaped, and a plurality of guide blades 51 are equidistantly arranged on the inner wall along the circumferential direction and correspond to the wind-shielding material-blocking grid blades 34 of the air separation classifying wheel 3;
the combined feeding blowing pipe 6 is arranged at the center position below the feeding dispersion refining pointed cone 4, the feeding pipe 61 is smoothly bent to form a vertical pipe 62 which extends below the feeding dispersion refining pointed cone 4, the top of the combined feeding blowing pipe is provided with a powder granule uniform dispersion straight-running bell mouth 63, and the inner wall of the bell mouth 63 is provided with a plurality of dispersing blades 64 at equal intervals along the circumferential direction;
the mixing blanking cone 7 is arranged at the lower part of the grading bin 2 and is a ring cone shape and an angle cone ring body; the upper port of the device is connected with the lower port of the grading bin 2;
the return-drop return-blowing device 8 is of a double-flange ring structure, is arranged at the center of the lower part of the mixing blanking cone 7, is connected with the lower port of the mixing blanking cone 7 through a flange, is a combined pipe cavity, is symmetrically provided with a reverse air inlet pipe 81 at any position on the side surface, and is internally provided with two opposite blowing rotating cavities 82 conforming to Archimedes spiral involute;
the separated material discharging inclined cone 9 is a deflection type discharging cone ring body, the upper end of the inclined cone 9 is connected with the lower port of the return blowing device 8, and the lower port of the separated material discharging inclined cone 9 is a separated material outlet
Preferably, the inner wall of the steady-state refining straight-moving ring 5 is provided with straight-moving guide vanes 51, and the distance between the guide vanes and the outer edge of the winnowing classification wheel 3 is 80-100 mm.
Preferably, the inner wall of the bell mouth of the combined feeding blowing pipe 6 is provided with anti-rotation equal grid blades, and the distance between the outlet end of the inner wall of the bell mouth and the feeding dispersion refining pointed cone 4 is 25-35 mm.
Preferably, the inner wall of the steady-state material-homogenizing straight-moving ring 5 is arc-shaped, and the arc extension tangent line at the upper end of the steady-state material-homogenizing straight-moving ring is not higher than the feeding position at the top end of the winnowing classification wheel 3.
Preferably, the tip angle of the feed dispersion refining tip cone 4 is 60 degrees plus or minus 10 degrees.
Preferably, the wind shielding grille blades 34 of the wind shielding classifying wheel 3 are axially divided into three areas.
Further, the upper end of the air classification wheel 3 is provided with a sealing leakage-proof powder ring body 11, and the edge of the upper end surface of the sealing leakage-proof powder ring body 11 is convexly provided with two circles of sealing strips 111; the bottom of the upper end face in the grading bin 2 is provided with a sealing disc 12 corresponding to the installation through hole 201, the sealing disc 12 is a ring body matched with the installation through hole 201, the outer side of the lower end face of the sealing disc 12 is provided with a circle of fixing strips 121 in a protruding mode along the circumferential direction, the middle of the lower end face of each fixing strip 121 is provided with two annular slots 122 matched with the sealing strips 111 along the circumferential direction, and the sealing strips 111 are inserted into the annular slots 122 to form a double-slot rotary sealing structure.
And a hoop fixing ring 13 is arranged at the bottom end of the winnowing classifying wheel 3, and the upper end of the feeding, dispersing and homogenizing pointed cone 4 is connected with the hoop fixing ring 13.
Preferably, the driving device 10 includes a variable frequency motor, and an output shaft of the variable frequency motor is connected with the rotating shaft 31 of the winnowing classifying wheel 3 through a connecting seat and a bearing seat.
The fine powder ultrafine powder enters from the feed pipe, reaches the feeding dispersion refining pointed cone, is subjected to high-speed rotation material separation through the feeding dispersion refining pointed cone, diffuses the material out from the bell mouth, reaches the powder guide ring, and upwards moves along the powder guide ring to enter the classifying wheel, at the moment, the classifying wheel rotates at a high speed, particles are thrown out by centrifugal force of the classifying wheel, conveying air is strongly sucked in by the discharge pipe, and the particles are continuously thrown out and sucked under negative pressure suction of the conveying air. When centrifugal force of the thrown particles and suction force of wind reach fine particle classification force of the fine particles to be classified, fine powder and superfine powder meeting the fineness requirement are sucked into the classification wheel and are sucked out from the discharging pipe. The mixed agglomerate of coarse powder and fine powder superfine powder is blown up by a back blowing device and continuously enters a classification area for classification. To ensure that the desired particles are effectively separated.
The fine powder ultrafine powder mixed material doped with coarse powder is sucked from a blowing feed pipe, reaches a refining pointed cone, is scattered by high-speed rotation of the refining pointed cone, is diffused out from a bell mouth at the top end of the blowing feed pipe, is prevented from rotating at high speed by blades on the inner wall of the bell mouth, is sucked to the circular arc cavity wall in a steady state refining straight-running ring in an approximate straight line, is prevented from synchronously rotating with a classifying wheel by rigid blades, and is guided to reach the outer circular arc of the classifying grid blades of the classifying wheel, the mixed material enters the space between the classifying grid blades of the classifying wheel upwards inwards, at the moment, the classifying wheel rotates at high speed, the mixed material is accelerated to be synchronous by the classifying wheel, at the moment, different particle sizes are thrown out by different centrifugal forces, conveying wind is sucked in by a strong force of a discharging bent pipe, and the mixed material is continuously thrown out for suction under the negative pressure suction of the conveying wind. When the centrifugal force of the thrown particles and the suction force of the wind reach the vicinity of the fineness particle balance point, the fine powder and the superfine powder which are required to be classified and meet the fineness requirement are sucked into the classifying wheel by the wind suction force and are sucked out of the discharging bent pipe. Continuously agglomerated mixed agglomerates in the classifying process downwards move along a blanking cone under the action of gravity and are blown up by a back blowing device, and fine powder and ultrafine powder continuously enter a classifying area for classifying so as to ensure that particles meeting the requirements are effectively separated out.
Claims (10)
1. A high precision air flow winnowing machine, comprising:
the fixed support is of a mutually supporting frame structure;
the grading bin is cylindrical and is arranged at the upper end of the fixed support, the center of the top of the grading bin is provided with a mounting through hole and a fixed pipe thereof, and one side of the fixed pipe is provided with a grading fine material superfine material discharging pipe; the lower end of the grading bin is provided with an opening;
the driving device is arranged at the upper end of the fixed pipe at the mounting through hole at the top of the grading bin, and an output shaft of the driving device penetrates through the mounting through hole;
the air sorting classification wheel is positioned in the classification bin and comprises a rotating shaft, an upper disc and a lower disc which are arranged on the rotating shaft, and a plurality of wind shielding grille blades which are arranged between the upper disc and the lower disc, are angled with the axis of the rotating shaft and are equidistantly arranged; the upper end of the rotating shaft is connected with an output shaft of the driving device through a coupler;
the air separation classifying wheel is characterized in that the air separation classifying wheel comprises a feeding, dispersing and homogenizing pointed cone, wherein a plurality of dispersing blades are arranged on the pointed cone inclined surface of the feeding, dispersing and homogenizing pointed cone at equal intervals;
the steady-state material-homogenizing straight-moving ring is arranged on the inner wall of the classifying bin and is positioned at the middle lower part of the winnowing classifying wheel, the inner wall of the steady-state material-homogenizing straight-moving ring is arc-shaped, and a plurality of guide blades are equidistantly arranged on the inner wall along the circumferential direction and correspond to the wind-shielding material-blocking grid blades of the winnowing classifying wheel;
the combined feeding blowing pipe is arranged at the center position below the feeding dispersion refining taper, the feeding pipe is smoothly bent to form a vertical pipe which extends below the feeding dispersion refining taper, the top of the feeding dispersion refining taper is provided with a powder and granular material uniform dispersion straight-running bell mouth, and the inner wall of the bell mouth is provided with a plurality of dispersing blades at equal intervals along the circumferential direction;
the mixing and blanking cone is arranged at the lower part of the classifying bin and is a ring cone-shaped and angle cone ring body; the upper port of the device is connected with the lower port of the grading bin;
the back-falling back-blowing device is of a double-flange ring structure and is arranged at the center position of the lower part of the mixing blanking cone, an upper port of the back-falling back-blowing device is connected with a lower port of the mixing blanking cone through a flange, the back-falling back-blowing device is a combined pipe cavity, any position of the side surface of the back-falling back-blowing device is symmetrically provided with a reverse air inlet pipe respectively, and two opposite-blowing rotating cavities which accord with Archimedes spiral involute are arranged in the back-falling back-blowing device;
the upper end of the separation material discharging inclined cone is connected with the lower port of the return blowing device, and the lower port of the separation material discharging inclined cone is a separation material outlet.
2. The high-precision airflow winnowing machine according to claim 1, wherein the inner wall of the steady-state refining straight running ring is provided with straight running guide blades, and the distance between the inner wall and the outer edge of the winnowing classifying wheel is 80-100 mm.
3. The high-precision airflow winnowing machine according to claim 1, wherein the inner wall of the horn mouth of the feeding blowing pipe is provided with anti-rotation equal-grid blades, and the distance between the outlet end of the inner wall of the horn mouth and the feeding dispersing and homogenizing pointed cone is 25-35 mm.
4. The high-precision airflow winnowing machine according to claim 1, wherein the inner wall of the steady-state refining straight-moving ring is arc-shaped, and the arc extension tangent line of the upper end of the steady-state refining straight-moving ring is not higher than the feeding position at the top end of the winnowing classifying wheel.
5. A high accuracy air flow winnowing machine as claimed in claim 1 wherein the tip angle of the feed dispersion cone is 60 ° ± 10 °.
6. The high-accuracy air classifier of claim 1 wherein the wind screen grille blades of the classifier wheel are divided into three regions in the axial direction.
7. The high-precision airflow winnowing machine according to claim 1 or 6, wherein a sealing powder leakage preventing ring body is arranged at the upper end of the air classification wheel, and two circles of sealing strips are convexly arranged at the edge of the upper end face of the sealing powder leakage preventing ring body; a sealing disc is arranged at the bottom of the upper end face in the grading bin, which corresponds to the mounting through hole, the sealing disc is a ring body matched with the mounting through hole, a circle of fixing strips are arranged on the outer side of the lower end face of the sealing disc in a protruding mode along the circumferential direction, two annular slots matched with the sealing strips are arranged in the middle of the lower end face of the fixing strips along the circumferential direction, and the sealing strips are inserted into the annular slots to form a double-slot rotary sealing structure.
8. The high-precision airflow winnowing machine according to claim 1, wherein a hoop fixing ring is arranged at the bottom end of the winnowing classifying wheel, and the upper end of the feed dispersing and homogenizing pointed cone is connected with the hoop fixing ring.
9. The high-precision air-flow winnowing machine according to claim 7, wherein a hoop fixing ring is arranged at the bottom end of the winnowing classifying wheel, and the upper end of the feed dispersing and refining pointed cone is connected with the hoop fixing ring.
10. The high-precision airflow fanning machine according to claim 1, wherein the driving device includes a variable frequency motor, and an output shaft of the variable frequency motor is connected with a rotating shaft of the air classification wheel through a connecting seat and a bearing seat.
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| CN201811582849.9A CN109453998B (en) | 2018-12-24 | 2018-12-24 | High-precision airflow winnowing machine |
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| CN201811582849.9A CN109453998B (en) | 2018-12-24 | 2018-12-24 | High-precision airflow winnowing machine |
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| CN109453998B true CN109453998B (en) | 2024-03-29 |
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| CN112138848A (en) * | 2020-09-16 | 2020-12-29 | 华润电力湖北有限公司 | Axial separator of coal mill |
| CN113897076A (en) * | 2021-08-25 | 2022-01-07 | 乌海黑猫炭黑有限责任公司 | Production method of high-end sealant pigment carbon black |
| CN115193716A (en) * | 2022-05-18 | 2022-10-18 | 江苏吉能达环境能源科技有限公司 | Grading apparatus |
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| CN203695426U (en) * | 2014-01-07 | 2014-07-09 | 咸阳非金属矿研究设计院有限公司 | Ultrafine powder airflow classifier |
| CN108273740A (en) * | 2018-03-30 | 2018-07-13 | 上海益非亚粉体技术设备有限公司 | A kind of ultra-large type grader |
| CN209613548U (en) * | 2018-12-24 | 2019-11-12 | 上海博隆粉体工程有限公司 | A kind of high-precision air-flow winnowing machine |
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Address after: No.1356, Xinxie Road, Huaxin Town, Qingpu District, Shanghai, 201708 Applicant after: Shanghai Bolong Equipment Technology Co.,Ltd. Address before: No.1356, Xinxie Road, Huaxin Town, Qingpu District, Shanghai, 201708 Applicant before: SHANGHAI BLOOM POWDER ENGINEERING Inc. |
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