CN2239301Y - Multi-wheel airflow classifier - Google Patents
Multi-wheel airflow classifier Download PDFInfo
- Publication number
- CN2239301Y CN2239301Y CN 95242360 CN95242360U CN2239301Y CN 2239301 Y CN2239301 Y CN 2239301Y CN 95242360 CN95242360 CN 95242360 CN 95242360 U CN95242360 U CN 95242360U CN 2239301 Y CN2239301 Y CN 2239301Y
- Authority
- CN
- China
- Prior art keywords
- air chamber
- grading wheel
- gap
- labyrinth
- face
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007599 discharging Methods 0.000 claims abstract description 11
- 238000004513 sizing Methods 0.000 claims description 12
- 239000007921 spray Substances 0.000 claims 1
- 239000000463 material Substances 0.000 description 16
- 239000000843 powder Substances 0.000 description 5
- 235000012054 meals Nutrition 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 210000004907 gland Anatomy 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
A multi-wheel airflow classifier is composed of casing, 2-4 classifying wheels symmetrically distributed on the circumference of casing, the discharging neck fixed to the central main discharging tube, balance ring, external ring and internal ring, and the labyrinth consisting of concave-convex end face of said discharging neck and convex-concave end face of classifying wheels.
Description
The utility model is a kind of many wheel gas flow sizing machines, belongs to the improvement to horizontal gas flow sizing machine.
Mostly common horizontal gas flow sizing machine is to adopt single grading wheel structure, is the high speed rotating that guarantees grading wheel, and the curved gap of leaving between meshing of the concavo-convex end face of the convex-concave shape end face of its grading wheel head and housing discharge neck is called labyrinth.The grading wheel of high speed rotating is gone out the discharging opening of the classified blade of taking turns of the fines that crushes and its head center from the discharge gate of discharge neck, reach the purpose of classification.Its weak point is:
1, since the effectiveness of classification of grader with the reducing or increase and difference of grading wheel, promptly the size of grading wheel is more little, effectiveness of classification is high more.The disposal ability of the grader of this single grading wheel structure is little, yield poorly, and exists the contradiction of output and precision, and can't solve for a long time.
2, the meal material makes the serious wear of grading wheel in labyrinth, and service life is short, can only be used for the classification of general hardness material, can not be used for the classification of high rigidity material.
3, the friction that causes because of the meal material causes the heating and the temperature rise of grader, can not be used for the classification of responsive to temperature material (be that temperature is higher than a certain limiting temperature, just lose the material (down together) of all or part of material behavior), and the scope of application is limited.
4, because the discharging opening of grading wheel head center is a straight-tube shape, identical with the diameter of discharge gate, so the fine powder of taking out of with high velocity air behind the classified impeller blade, very big to the friction dynamics of the discharge gate wall of discharge neck, friction and wear is very big relatively.
5, during the grading wheel high speed rotating, the two ends of labyrinth are held all the time and are existed pressure reduction, and the meal material can enter labyrinth inevitably and enter in the fine powder material of discharging opening, makes the Granularity Distribution inequality, and effectiveness of classification is low.
The purpose of this utility model is to avoid above-mentioned the deficiencies in the prior art and a kind of many wheel gas flow sizing machines is provided, can eliminate the pressure reduction between labyrinth beginning, the terminal, the friction of elimination grading wheel fully, realize no pressure reduction classification, improve effectiveness of classification, product purity and output, improve the wearability of grading wheel, enlarge the scope of application of grading material.
The purpose of this utility model can reach by following measure: be made up of the grading wheel and the discharge neck that connect machine shaft in the housing, be distributed with 2-4 grading wheels on the housing circumferential wall symmetrically, be fixed on the tube wall of total drainage conduit at center with the corresponding discharge neck of each grading wheel, the discharge neck is by gimbal, outer shroud and interior ring are formed, the discharge gate at its discharge neck center is communicated with total drainage conduit, by gimbal, the meshing gap of the concavo-convex end face that outer shroud and interior ring are formed and the convex-concave shape end face of grading wheel head constitutes labyrinth, between gimbal and the outer shroud, between outer shroud and the interior ring all are air chambers, and the annular space winding-up gap that is communicated with labyrinth is arranged respectively on the air chamber.
The purpose of this utility model can reach by following measure: the annular space winding-up gap of the air chamber of gimbal and outer interannular is greater than the annular space winding-up gap of the air chamber of outer shroud and interior interannular; The discharging opening of grading wheel head center is horn-like, and its osculum outwardly and put in the discharge gate of discharge neck; On two air chambers the joint that connects source of the gas is arranged all.
Description of drawings: Fig. 1 is many wheel gas flow sizing machine structure charts
Fig. 2 is many wheel gas flow sizing machine part section structure charts
The utility model is compared prior art and is had following advantage:
1, be distributed with symmetrically 2-4 grading wheels on the housing circle wall, corresponding with each grading wheel The discharge neck is fixed on the tube wall of total drainage conduit at center, and the discharge neck is by gimbal, outer shroud and interior ring group Become, the discharge gate of its discharge neck is communicated with total drainage conduit. When several grading wheels simultaneously during high speed rotating, In the vertical direction produces a very strong rotational flow field, forms eddy current, the meal material is thrown entirely, The fine powder that comes out through each grading wheel then enters total drainage conduit from separately discharge gate and goes out, thereby big Improve greatly effectiveness of classification and output, solved the contradiction of precision and output.
2, the air seal structure that the inner and outer rings that adopts between grading wheel and the discharge neck, gimbal form, by Regulate on two air chambers the joint that connects source of the gas, make air pressure in outer shroud and the interior interannular air chamber greater than the labyrinth Air pressure in the air pressure at top, labyrinth and gimbal and the outer interannular air chamber, two interior certain pressures of air chamber Gas with labyrinth segmentation sealing gland, makes the beginning of labyrinth, the pressure of terminal by annular space winding-up gap Power tends to balance, thereby has eliminated the pressure reduction of labyrinth beginning, terminal fully, and making its pressure reduction is zero, Both guaranteed the high speed rotating of grading wheel, avoided again bringing into of coarse dust, and made Granularity Distribution even, Improved the purity of effectiveness of classification and product.
3, adopt inner and outer rings, gimbal air seal structure, avoid coarse dust to enter labyrinth, the wearing and tearing of grading wheel have been eliminated, both prolonged the service life of grading wheel, solved the problem of frictional heating temperature rise again, make machine not be only applicable to the material of general hardness, also be applicable to the classification of the material and the responsive to temperature material of higher hardness, enlarged the scope of application greatly.
4, the discharging opening of grading wheel head center is horn-like, its osculum outwardly and put in the discharge gate of discharge neck, the fine powder of taking out of with air-flow behind the classified impeller blade, very fast release is slowed down behind horn mouth, fine powder to the friction dynamics of the discharge gate wall of discharge neck slow down, wearing and tearing reduces greatly.
The utility model is described in further detail below in conjunction with the embodiment accompanying drawing:
As shown in Figure 1: take turns on housing (1) circumferential wall of gas flow sizing machine more and be distributed with 2-4 grading wheels (2) symmetrically, be fixed on the tube wall of total drainage conduit (15) at center with the corresponding discharge neck of each grading wheel (2) (3), the discharge gate (14) of its discharge neck (3) is communicated with total drainage conduit (15).
As shown in Figure 2: discharge neck (3) is made up of gimbal (5), outer shroud (7) and interior ring (9), its center is discharge gate (14), and the meshing gap of the concavo-convex end face of being made up of gimbal (5), outer shroud (7) and interior ring (9) and the convex-concave shape end face of grading wheel head (8) constitutes labyrinth (12).Be air chamber (4) between gimbal (5) and the outer shroud (7), and the annular space winding-up gap (10) of connection labyrinth (12) arranged, be air chamber (6) between outer shroud (7) and the interior ring (9), and the annular space winding-up gap (11) of connection labyrinth (12) arranged, all there is the joint that connects source of the gas in the annular space winding-up gap (10) of air chamber (4) greater than air chamber (6) annular space winding-up gap (11) on air chamber (4), (6).The discharging opening (13) at grading wheel head (8) center is horn-like, and its osculum puts in the discharge gate (14) of discharge neck (3) outwardly.
By regulating the joint that connects source of the gas on two air chambers, make air pressure in the air chamber (6) greater than the air pressure at labyrinth (12) top and the air pressure in the air chamber (4), and the gas of certain air pressure is by the annular space gap (10) of jetting in the air chamber, (11) with labyrinth (12) segmentation sealing gland, make the beginning of labyrinth, the pressure of terminal tends to balance, thereby eliminated the labyrinth beginning fully, the pressure reduction of terminal, making its pressure reduction is zero, both guaranteed the high speed rotating of grading wheel, avoid bringing into of coarse dust again, the friction of grading wheel and the problem of heating up have been eliminated, make Granularity Distribution even, improved effectiveness of classification, prolong the service life of grading wheel, also can be used for the classification of higher material of hardness and responsive to temperature material, enlarged the scope of application.
This machine both can use separately, can cooperate with fluid bed again to form the use of jet mill grinding machine.
Claims (4)
1, many wheel gas flow sizing machines, form by the grading wheel and the discharge neck that connect machine shaft in the housing, grading wheel has blade, head center has discharging opening, the meshing gap of the convex-concave shape end face of head and the concavo-convex end face of discharge neck forms labyrinth, it is characterized in that: be distributed with 2-4 grading wheels (2) symmetrically on housing (1) circumferential wall, be fixed on the tube wall of total drainage conduit (15) at housing (1) center with the corresponding discharge neck of each grading wheel (2) (3), discharge neck (3) is by gimbal (5), outer shroud (7) and interior ring (9) are formed, the discharge gate (14) at its discharge neck (3) center is communicated with total drainage conduit (15), by gimbal (5), the meshing gap of the concavo-convex end face that outer shroud (7) and interior ring (9) are formed and the convex-concave shape end face of grading wheel head (8) constitutes labyrinth (12), be air chamber (4) between gimbal (5) and the outer shroud (7), between outer shroud (7) and the interior ring (9) is air chamber (6), and the annular space winding-up gap (10) of connection labyrinth (12) is arranged respectively on each air chamber, (11).
2, gas flow sizing machine as claimed in claim 1, the annular space spray gap (10) that it is characterized in that air chamber (4) is greater than air chamber (6) annular space winding-up gap (11).
3, gas flow sizing machine as claimed in claim 1 or 2, the discharging opening (13) that it is characterized in that grading wheel head (8) center be for horn-like, and its osculum outwardly and put in the discharge gate (14).
4, gas flow sizing machine as claimed in claim 1 or 2 is characterized in that the joint that connects source of the gas is all arranged on air chamber (4), (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95242360 CN2239301Y (en) | 1995-11-06 | 1995-11-06 | Multi-wheel airflow classifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95242360 CN2239301Y (en) | 1995-11-06 | 1995-11-06 | Multi-wheel airflow classifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2239301Y true CN2239301Y (en) | 1996-11-06 |
Family
ID=33883333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95242360 Expired - Fee Related CN2239301Y (en) | 1995-11-06 | 1995-11-06 | Multi-wheel airflow classifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2239301Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102513295A (en) * | 2011-12-28 | 2012-06-27 | 潍坊正远粉体工程设备有限公司 | Self flow division type grading machine |
| CN102580928A (en) * | 2012-02-28 | 2012-07-18 | 潍坊汇成新材料科技有限公司 | Method for classifying silicon carbide micro powder and classifying equipment of method |
| CN106391465A (en) * | 2016-09-20 | 2017-02-15 | 派勒（天津）纳米技术有限公司 | Large-flow multi-class device |
-
1995
- 1995-11-06 CN CN 95242360 patent/CN2239301Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102513295A (en) * | 2011-12-28 | 2012-06-27 | 潍坊正远粉体工程设备有限公司 | Self flow division type grading machine |
| CN102580928A (en) * | 2012-02-28 | 2012-07-18 | 潍坊汇成新材料科技有限公司 | Method for classifying silicon carbide micro powder and classifying equipment of method |
| CN106391465A (en) * | 2016-09-20 | 2017-02-15 | 派勒（天津）纳米技术有限公司 | Large-flow multi-class device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |