CN2644021Y - Powder classifier - Google Patents
Powder classifier Download PDFInfo
- Publication number
- CN2644021Y CN2644021Y CN 03273758 CN03273758U CN2644021Y CN 2644021 Y CN2644021 Y CN 2644021Y CN 03273758 CN03273758 CN 03273758 CN 03273758 U CN03273758 U CN 03273758U CN 2644021 Y CN2644021 Y CN 2644021Y
- Authority
- CN
- China
- Prior art keywords
- secondary air
- chamber
- powder
- collecting chamber
- meal
- 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 - Lifetime
Links
- 239000000843 powder Substances 0.000 title claims abstract description 29
- 235000012054 meals Nutrition 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 16
- 230000000694 effects Effects 0.000 abstract description 4
- 230000010485 coping Effects 0.000 abstract 4
- 230000005540 biological transmission Effects 0.000 abstract 3
- 239000002245 particle Substances 0.000 description 8
- 230000002153 concerted effect Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Combined Means For Separation Of Solids (AREA)
Abstract
The utility model discloses a powder grader, comprising a cylinder, a coping, a transmission component and a grading rotor; wherein the coping is arranged on the cylinder; the transmission component is arranged on the coping; and the grading rotor is arranged in the cylinder, the center of the coping is opened with a thin material-air outlet with an outlet elbow; one part of the transmission component is fixedly arranged in the elbow; the lower part of the cylinder is connected with a secondary air inlet chamber having a secondary air inlet in tangential direction; and a rough power collecting chamber is connected to the lower part of the secondary air inlet, the bottom of which has an exit and the bottom center of which has a material-air inlet which inserts into the rough power collecting chamber first and extends to the lower of the secondary air inlet chamber through a pipe. The grader is able to reduce wearing speed of the grading rotor and enhance powder grading effect.
Description
Technical field
The utility model relates to a kind of grader, particularly a kind of grader that utilizes the dry attritive powder of eddy current sorting of classification rotor generation.
Background technology
The grader of the dry attritive powder of present industrial utilization pneumatic separation, the powder particle that all is based on different quality have this principle of different centrifugal force and it are separated in centrifugal force field.Powder to be fractionated sucks the classification rotor of grader by blower fan, the centrifugal force that the classification rotor that powder is rotated simultaneously in grader produces and by the effect of the synthetic opposite power of both direction of making a concerted effort of other a plurality of power.Under the classification condition of setting,, make a concerted effort less than centrifugal force for particle and the big meal of quality; And with respect to particle and the little fine powder of quality, make a concerted effort greater than centrifugal force.Therefore fine powder will enter the classification rotor and enter subsequent processing with air-flow, and meal is got rid of to the grader wall by the classification rotor, and gliding at himself gravity effect lower edge wall enters the meal collecting chamber of grader bottom, thereby reaches the purpose of classification.But because there is collision mutually in the powder in the air-flow in classification process, and increase along with meal content in the powder, the also corresponding increase of the probability of this collision, because there is this collision, make fine powder near the classification rotor, in the face of squeezing of a large amount of meal is difficult to enter the classification rotor calmly, thereby cause classification efficiency low; And owing to the powder that enters the classification rotor all can friction or collision take place with the classification rotor, when particularly the coarse grained ratio in the material is big, this friction or collision are more serious, therefore cause the wearing and tearing of classification rotor very fast, thereby have quickened the maintenance of classification rotor and changed frequency.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of a part of particle and big powder of quality removed when material arrives the classification rotor, thereby can slow down the rate of wear of classification rotor, prolong the service cycle and the high powder separator of classification efficiency of classification rotor.
The technical scheme that its technical problem that solves the utility model adopts is: powder separator, and it comprises cylindrical shell, be fixed on top cover on the cylindrical shell, be installed in the drive disk assembly on the top cover and be connected on the drive disk assembly and be installed in classification rotor in the cylindrical shell; Central authorities at top cover have fines and air outlet slit, are fixed with an exit bend on fines and the air outlet slit, and the part of described drive disk assembly is fixedly mounted in the exit bend; Be connected with the secondary air chamber in the bottom of cylindrical shell, the secondary air chamber the secondary air mouth tangentially arranged; The below of secondary air chamber is connected with a meal collecting chamber, and meal outlet is arranged at its bottom, and the bottom center of meal collecting chamber has material and air intake, and described material and air intake insert the meal collecting chamber by a pipeline and extend to the bottom of secondary air chamber; Described meal collecting chamber is tilted conical; Described classification rotor is tapered.
The beneficial effects of the utility model are: the utility model adopts the structure that increased a secondary air chamber before the classification rotor, in the secondary air chamber, material is under the secondary wind action, in advance a part of particle and the bigger powder of mass ratio are removed, thereby can alleviate wearing and tearing and the collision of material to the classification rotor, slow down the rate of wear of classification rotor, improve the service cycle of classification rotor; Simultaneously since removed in advance a part of particle and quality powder, reduced the collision probability of big particle to fine powder, make fine powder can enter the classification rotor more smoothly, therefore can improve the classification efficiency of powder.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
With reference to Fig. 1, powder separator of the present utility model comprises cylindrical shell 4, be fixed on top cover 7 on the cylindrical shell 4, be installed in the drive disk assembly 6 on the top cover 7 and be connected on the drive disk assembly 6 and be installed in classification rotor 5 in the cylindrical shell 4, classification rotor 5 can adopt cone-shaped, assemble by a plurality of blades, so that the dismounting maintenance; Cylindrical shell 4 and top cover 7 forms the grading room 13 of a sealing, has fines and air outlet slit 12 in the central authorities of top cover 7, is fixed with an exit bend 11 on fines and the air outlet slit 12, and the part of described drive disk assembly 6 is fixedly mounted in the exit bend 11; Be connected with secondary air chamber 3 in the bottom of cylindrical shell 4, secondary air chamber 3 secondary air mouth 8 tangentially arranged; The below of secondary air chamber 3 is connected with a meal collecting chamber 2, in meal collecting chamber bottom one meal outlet 9 is arranged, meal collecting chamber 2 can be made tilted conical, so that the cleaning of meal, the bottom center of meal collecting chamber 2 has material and air intake 1, and described material and air intake 1 insert meal collecting chamber 2 by a pipeline 10 and extend to the bottom of secondary air chamber 3.
The operation principle of powder separator of the present utility model is such: the air-flow that carries material enters in the grader along pipeline 10 from material and air intake 1, secondary gas flow tangentially enters grader from secondary air mouth 8 along the secondary air chamber simultaneously, thereby produce the air-flow of rotation in the secondary air chamber, the centrifugal force that swirling eddy produces is selected the thicker powder of a part in the material, enter meal collecting chamber 2, material through the sorting first time enters grading room with the air-flow rising, the eddy current that the classification rotor that material is rotated at a high speed in grading room produces carries out classification once more, the coarse fodder that particle and quality are bigger is thrown toward wall, glide at gravity effect lower edge wall, thinner material then passes the classification rotor and enters gathering system.
Claims (3)
1. powder separator is characterized in that this grader comprises cylindrical shell (4), is fixed on top cover (7) on the cylindrical shell (4), is installed in the drive disk assembly (6) on the top cover (7) and is connected in drive disk assembly (6) to go up and be installed in classification rotor (5) in the cylindrical shell (4); Central authorities at top cover (7) have fines and air outlet slit (12), are fixed with an exit bend (11) on fines and the air outlet slit (12), and the part of described drive disk assembly (6) is fixedly mounted in the exit bend (11); Be connected with secondary air chamber (3) in the bottom of cylindrical shell (4), secondary air chamber (3) secondary air mouth (8) tangentially arranged; The below of secondary air chamber (3) is connected with a meal collecting chamber (2), one meal outlet (9) is arranged at its bottom, the bottom center of meal collecting chamber (2) has material and air intake (1), and described material and air intake (1) insert meal collecting chamber (2) by a pipeline (10) and extend to the bottom of secondary air chamber (3).
2. a kind of powder separator according to claim 1 is characterized in that described meal collecting chamber (2) is tilted conical.
3. a kind of powder separator according to claim 1 is characterized in that classification rotor (5) is tapered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03273758 CN2644021Y (en) | 2003-08-22 | 2003-08-22 | Powder classifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03273758 CN2644021Y (en) | 2003-08-22 | 2003-08-22 | Powder classifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2644021Y true CN2644021Y (en) | 2004-09-29 |
Family
ID=34301664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03273758 Expired - Lifetime CN2644021Y (en) | 2003-08-22 | 2003-08-22 | Powder classifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2644021Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104549653A (en) * | 2013-10-23 | 2015-04-29 | 上海重型机器厂有限公司 | Coal mill |
-
2003
- 2003-08-22 CN CN 03273758 patent/CN2644021Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104549653A (en) * | 2013-10-23 | 2015-04-29 | 上海重型机器厂有限公司 | Coal mill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Guangdong Jiawei Chemical Industrial Co.,Ltd. Assignor: Chen Pinwei Contract record no.: 2010440000550 Denomination of utility model: Pneumatic sealing device for powder separator Granted publication date: 20040929 License type: Exclusive License Record date: 20100524 |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130822 Granted publication date: 20040929 |