CN2239302Y - horizontal airflow classifier - Google Patents
horizontal airflow classifier Download PDFInfo
- Publication number
- CN2239302Y CN2239302Y CN 95242361 CN95242361U CN2239302Y CN 2239302 Y CN2239302 Y CN 2239302Y CN 95242361 CN95242361 CN 95242361 CN 95242361 U CN95242361 U CN 95242361U CN 2239302 Y CN2239302 Y CN 2239302Y
- Authority
- CN
- China
- Prior art keywords
- labyrinth
- face
- gap
- air chamber
- grading wheel
- Prior art date
- 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 10
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 238000004513 sizing Methods 0.000 claims description 12
- 210000004907 gland Anatomy 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 19
- 239000000843 powder Substances 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000007664 blowing Methods 0.000 abstract 1
- 235000012054 meals Nutrition 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000001105 regulatory effect Effects 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
- 239000004597 plastic additive Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Images
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
A horizontal airflow classifier has a gap between the end face of classifying wheel connected to the motor shaft in its casing and the end face of discharging neck, an air sealing mechanism consisting of balance ring, external ring and internal ring on the discharging neck, a labyrinth consisting of the convex-concave end face and the convex-concave end face of classifying wheel head, and an air chamber between the rings. The air at a certain pressure in the air chamber is used for sealing the labyrinth in a segmented manner through the annular space blowing gap, so that the pressure difference is zero, coarse powder is prevented from entering the labyrinth, frictional heat is eliminated, the grading precision is improved, the service life of the grading wheel is prolonged, and the air-sealing device is suitable for grading general materials, materials with medium hardness and above and temperature-sensitive materials.
Description
The utility model is a kind of horizontal gas flow sizing machine, belongs to the further improvement to horizontal gas flow sizing machine structure.
Present common horizontal gas flow sizing machine, in order not influence the high speed rotating of grading wheel, guarantee effectiveness of classification, its grading wheel head is a convex-concave shape end face, with the meshing face of the concavo-convex end face of housing discharge gate be curved gap, be called labyrinth, the grading wheel of high speed rotating, the discharging opening of classified blade of taking turns of the fines that crushes and grading wheel head center is gone out from the discharge gate on the housing, reach the purpose of classification.Its weak point is: during the grading wheel high speed rotating, the two ends of labyrinth are held all the time and are existed pressure reduction, easily enter the meal material inevitably, and the consequence that causes is:
1, the meal material enters the fine powder material of discharging opening from labyrinth, makes the Granularity Distribution inequality, and effectiveness of classification is low.
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.
In addition, identical with the diameter of discharge gate because the discharging opening of grading wheel head center is a straight-tube shape, so the fine powder of taking out of with high velocity air behind the classified blade of taking turns is very big to the friction dynamics of discharge gate wall, friction and wear is very big relatively.
The purpose of this utility model is to avoid above-mentioned the deficiencies in the prior art and a kind of horizontal gas flow sizing machine 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 the service life of effectiveness of classification and grading wheel, enlarge the scope of application of grading material.
The purpose of this utility model can reach by following measure: the discharge neck that is fixed on the housing has a sealing gland mechanism, form by inner and outer rings, gimbal, the meshing gap of the concavo-convex end face of being made up of gimbal, outer shroud and interior ring and the convex-concave shape end face of grading wheel head constitutes labyrinth, be air chamber between gimbal and the outer shroud, and the annular space winding-up gap that is communicated with labyrinth arranged, between outer shroud and the interior ring is air chamber, and the annular space winding-up gap that is communicated with labyrinth is arranged.
The purpose of this utility model can also 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; On two air chambers the joint that connects source of the gas is arranged all.
Description of drawings:
Fig. 1 is horizontal gas flow sizing machine structure chart
Fig. 2 is horizontal gas flow sizing machine part section structure chart
The utility model is compared prior art and is had following advantage:
1, the discharge neck on the housing adopts inner and outer rings, gimbal air seal structure, by regulating two gas The joint that connects source of the gas on the chamber makes air pressure in outer shroud and the interior interannular air chamber greater than labyrinth top Air pressure and the air pressure in gimbal and the outer interannular air chamber, the gas of certain pressures is logical in two air chambers Cross annular space winding-up gap with labyrinth segmentation sealing gland, make labyrinth beginning, whole pressure be tending towards flat Weighing apparatus, thus the pressure reduction of labyrinth beginning, terminal eliminated fully, and making its pressure reduction is zero, both guarantees The high speed rotating of grading wheel, avoid again bringing into of coarse dust, make Granularity Distribution even, carry High effectiveness of classification.
2, adopt inner and outer rings, gimbal air seal structure, avoid coarse dust to enter labyrinth, eliminate The wearing and tearing of grading wheel, both prolonged service life of grading wheel, solved again the frictional heating temperature rise Problem makes machine not be only applicable to the material of general hardness, also be applicable to higher hardness material and The classification of responsive to temperature material, such as: the plastic additive that can be to a kind of high-temperature resistant 60 ℃ Carry out classification, greatly enlarged the scope of application.
3, the discharging opening of grading wheel head center is horn-like, its osculum outwardly and put in the discharge gate, 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 discharge gate wall 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: horizontal gas flow sizing machine is made up of with the discharge neck (3) that is fixed on the housing (1) the grading wheel (2) and the grading wheel head (8) that are fastened in the housing (1) on the machine shaft.
As shown in Figure 2: a sealing gland mechanism is arranged on the discharge neck (3), form by 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 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 jetted the gap with labyrinth segmentation sealing gland by annular space in the air chamber, make the labyrinth beginning, whole pressure 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, can be used for higher material of hardness and temperature sensitive material, enlarged the scope of application.
The utility model both can use separately, can cooperate with fluid bed again to form the use of jet mill grinding machine.
Claims (4)
1, horizontal gas flow sizing machine, include grading wheel that connects machine shaft in the housing and the discharge neck that is fixed on 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: the sealing gland mechanism of discharge neck (3) is by gimbal (5), outer shroud (7) and interior ring (9) are formed, its center is discharge gate (14), 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), and the annular space winding-up gap (10) of connection labyrinth (12) arranged, between outer shroud (7) and the interior ring (9) is air chamber (6), and the annular space winding-up gap (11) of connection labyrinth (12) is arranged.
2, horizontal 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, horizontal 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, horizontal 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 95242361 CN2239302Y (en) | 1995-11-06 | 1995-11-06 | horizontal airflow classifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95242361 CN2239302Y (en) | 1995-11-06 | 1995-11-06 | horizontal airflow classifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2239302Y true CN2239302Y (en) | 1996-11-06 |
Family
ID=33883334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95242361 Expired - Fee Related CN2239302Y (en) | 1995-11-06 | 1995-11-06 | horizontal airflow classifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2239302Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100435983C (en) * | 2006-08-31 | 2008-11-26 | 华南理工大学 | Dry type turbine classifier for micropowder |
| CN110961351A (en) * | 2019-12-20 | 2020-04-07 | 浙江清湖建材股份有限公司 | Novel heavy calcium carbonate powder production is with screening device |
-
1995
- 1995-11-06 CN CN 95242361 patent/CN2239302Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100435983C (en) * | 2006-08-31 | 2008-11-26 | 华南理工大学 | Dry type turbine classifier for micropowder |
| CN110961351A (en) * | 2019-12-20 | 2020-04-07 | 浙江清湖建材股份有限公司 | Novel heavy calcium carbonate powder production is with screening 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 |