CN2602843Y - High-efficient rotor type coal powder grading machine - Google Patents
High-efficient rotor type coal powder grading machine Download PDFInfo
- Publication number
- CN2602843Y CN2602843Y CN 03220472 CN03220472U CN2602843Y CN 2602843 Y CN2602843 Y CN 2602843Y CN 03220472 CN03220472 CN 03220472 CN 03220472 U CN03220472 U CN 03220472U CN 2602843 Y CN2602843 Y CN 2602843Y
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- China
- Prior art keywords
- rotor
- top cover
- cone
- cylindrical shell
- coal dust
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Abstract
The utility model discloses a high efficiency rotor coal powder classifier which can improve the powder choosing efficiency of the classifier (can reach up beyond 80 percent) and the machine hour production, and realize the flexible adjustment of the product fineness and grain size composition. The utility model comprises a shell, a rotor part, an air inlet pipe and material outlet cylinders, a top cover, a cylinder body one, a cylinder body two and a cone. The material outlet cylinders are orderly fixed and connected together to form the main machine shell body part, every connection parts are equipped with sealing rings, the top cover is provided with the air inlet pipe, and the material outlet pipe is provided with the air inlet pipe to restrict the inner cone to be in fixed connection in the cone by use of the bracket, the cage rotor forms the rotor part together with the main shaft, which is fixed in connection inside the cylinder body two and realizes rotation through the motor on the top cover, while the cylinder body two, the sealing ring and the cage rotor form the classifying room together.
Description
Technical field
The utility model belongs to building materials, field of power machinery, specifically a kind of efficient rotor formula coal dust grader.
Background technology
The coal grinding system now generally adopts the select powder equipment of mill separator as system.Mill separator is to utilize the effect of inertia force that material is carried out classification.Under the effect of inertia force, coarse granule becomes meal to limit wall sedimentation; And fine grain effect of inertia is not strong, becomes fine powder (finished product) by mill separator under the rolling action of gas.Because usefulness is the inertial classification principle, the classification force intensity is lower, regulate difficulty and the amplitude of accommodation limited, so grinding efficiency of mill separator low (generally about 30%).
Summary of the invention
The purpose of this utility model provides a kind of efficient rotor formula coal dust grader, can improve the grinding efficiency (can reach more than 80%) of grader and the unit-hour output of coal grinding system, and can realize the flexible modulation to product fineness and granularmetric composition according to technological requirement.
The purpose of this utility model realizes by following approach:
A kind of efficient rotor formula coal dust grader comprises housing, rotor portion, blast pipe, discharge barrel.Top cover, cylindrical shell I, cylindrical shell II, cone, discharge barrel are fixedly connected successively, form the host shell part, each point of attachment is equipped with sealing ring, top cover is provided with discharge pipe, and discharge barrel is provided with blast pipe, and the constraint inner cone connects firmly in cone by support, cage rotor and main shaft are formed rotor portion jointly, connect firmly in cylindrical shell II, and realize transmission by the motor that is arranged on the top cover, cylindrical shell II, sealing ring, cage rotor form grading room jointly.
The utility model advantage compared to existing technology:
Adopt cage rotor on the utility model structure, adopt centrifugal force field as the classification field of force, intensity is higher.Consider the characteristics of interior air motion of grader and distribution, rotor adopts inverted cone-shaped structure, to guarantee the stable of the grading room internal classification field of force.Material is subjected to stronger eddy flow of air-flow and tangential effect of shearing in grading room, material can be disperseed fully, the grinding efficiency height.And have the clear and definite classification face in interface in the grading room, the stressing conditions of each several part material is basicly stable, and effectiveness of classification is higher.Adopt the constraint inner cone,, strengthen the effect of its secondary sorting to stablize the gas flowfield in the grading room.Blast pipe adopts the spiral stream guidance device, makes the air-flow that carries powder produce rotation, strengthens the centrifugal force grading of material.Can be according to producing needs, flexible modulation product fineness, control product granularity are formed.Be used for the transformation of coal grinding system, not only can improve system throughput, and can improve the combustion case of coal dust effectively.Adopt this technology that the coal grinding system is transformed, need not change the technology arrangement and the coordinative composition of equipments situation of original system, the transformation cycle is short, improvement expenses is low, transforms the back grinding efficiency and reaches more than 80%, and system throughput improves 20～30% on the original basis.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the utility model cage rotor structural representation.
Fig. 3 is the utility model blast pipe flow-guiding structure schematic diagram.
Fig. 4 is the utility model cage rotor A-A profile.
Fig. 5 is the utility model blast pipe flow-guiding structure vertical view.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described:
A kind of efficient rotor formula coal dust grader, be fixedly connected successively by top cover 9, cylindrical shell I10, cylindrical shell II11, cone, discharge barrel, form the host shell part, each point of attachment is equipped with sealing ring, top cover 9 is provided with discharge pipe 3, discharge barrel is provided with blast pipe 8, and blast pipe 8 adopts the spiral stream guidance device.Constraint inner cone 6 connects firmly in cone by support, back taper cage rotor 5 is formed rotor portion jointly with main shaft, connect firmly in cylindrical shell II11, and realize transmission, cylindrical shell II11, sealing ring, the cage rotor 5 common grading rooms 4 that form by the motor 1 that is arranged on the top cover 9.Cage rotor 5 comprises upper and lower dish, is the radial graded blade that evenly is furnished with between the upper and lower dish, and the quantity of blade can determine that cage rotor 5 is in running according to the fineness requirement of product, and rotating speed can pass through the spindle motor frequency control.
The course of work: powder and air suck powder concentrators with higher speed by blast pipe 8, and powder is further disperseed and flows into grading room 4 under the constraint of fast approximately inner cone 6 and guide functions.In grading room 4, the air-flow of rotor surface and be dispersed in particle in the air-flow under the drive of cage rotor 5 is done rotation at a high speed with rotor together, thereby is made a material be subjected to big action of centrifugal force.Fine powder can not overcome the effect of air resistance because of being subjected to centrifugal force less, is carried the classification face of passing by air-flow, discharges by discharge pipe 3, and being collected by outside gas-solid separating device becomes product.Meal then under big action of centrifugal force, discharged by meal outlet 7 to limit wall sedimentation, sends ball mill grinding again back to by the effect that overcomes air resistance.Regulate the rotating speed of motor 1, can change powder granule stressing conditions of 4 in grading room, thus can be according to manufacturing technique requirent flexible modulation product fineness, control its granularmetric composition.
Claims (4)
1, a kind of efficient rotor formula coal dust grader, comprise housing, rotor portion, blast pipe, discharge barrel is characterized in that top cover, cylindrical shell I, cylindrical shell II, cone, discharge barrel is fixedly connected successively, form the host shell part, each point of attachment is equipped with sealing ring, top cover is provided with discharge pipe, discharge barrel is provided with blast pipe, the constraint inner cone connects firmly in cone by support, cage rotor and main shaft are formed rotor portion jointly, connect firmly in cylindrical shell II, and by being arranged on the motor realization transmission on the top cover, cylindrical shell II, sealing ring, cage rotor forms grading room jointly.
2, efficient rotor formula coal dust grader according to claim 1 is characterized in that described cage rotor comprises upper and lower dish, is back taper, is the radial graded blade that evenly is furnished with between the upper and lower dish.
3, efficient rotor formula coal dust grader according to claim 1 and 2 is characterized in that described blast pipe is provided with the spiral stream guidance device.
4, efficient rotor formula coal dust grader according to claim 3 is characterized in that described motor is a variable-frequency motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03220472 CN2602843Y (en) | 2003-03-19 | 2003-03-19 | High-efficient rotor type coal powder grading machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03220472 CN2602843Y (en) | 2003-03-19 | 2003-03-19 | High-efficient rotor type coal powder grading machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2602843Y true CN2602843Y (en) | 2004-02-11 |
Family
ID=34161914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03220472 Expired - Fee Related CN2602843Y (en) | 2003-03-19 | 2003-03-19 | High-efficient rotor type coal powder grading machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2602843Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101972687A (en) * | 2010-10-09 | 2011-02-16 | 南京工业大学 | Process for preparing carbon forming powder |
| CN102796538A (en) * | 2012-08-01 | 2012-11-28 | 苏小平 | Device for separating coal powder in material guiding mode |
| CN104549653A (en) * | 2013-10-23 | 2015-04-29 | 上海重型机器厂有限公司 | Coal mill |
| CN107233967A (en) * | 2017-07-11 | 2017-10-10 | 桂林矿山机械有限公司 | Multistage powder flour mill |
-
2003
- 2003-03-19 CN CN 03220472 patent/CN2602843Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101972687A (en) * | 2010-10-09 | 2011-02-16 | 南京工业大学 | Process for preparing carbon forming powder |
| CN102796538A (en) * | 2012-08-01 | 2012-11-28 | 苏小平 | Device for separating coal powder in material guiding mode |
| CN102796538B (en) * | 2012-08-01 | 2016-06-29 | 苏小平 | The equipment of material leading type separation coal dust |
| CN104549653A (en) * | 2013-10-23 | 2015-04-29 | 上海重型机器厂有限公司 | Coal mill |
| CN107233967A (en) * | 2017-07-11 | 2017-10-10 | 桂林矿山机械有限公司 | Multistage powder flour mill |
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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 |