CN203540914U - Dynamic separation device for pulverized coal particles - Google Patents
Dynamic separation device for pulverized coal particles Download PDFInfo
- Publication number
- CN203540914U CN203540914U CN201320609914.9U CN201320609914U CN203540914U CN 203540914 U CN203540914 U CN 203540914U CN 201320609914 U CN201320609914 U CN 201320609914U CN 203540914 U CN203540914 U CN 203540914U
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- China
- Prior art keywords
- pulverized coal
- housing
- inner barrel
- separation device
- moving vane
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Abstract
The utility model discloses a dynamic separation device for pulverized coal particles. The device comprises a shell, a pulverized coal discharging pipe and a pulverized coal returning pipe, wherein the pulverized coal discharging pipe and the pulverized coal returning pipe are arranged at the upper and lower ends of the shell respectively, and are communicated with the interior of the shell; an inner barrel, a plurality of stationary blades, a plurality of moving blades and a moving impeller rotor are arranged in the shell; the upper end of the inner barrel is opened, and the lower end of the inner barrel is communicated with the pulverized coal returning pipe; the stationary blades are circumferentially arranged between the upper end of the inner barrel and the shell; the upper ends of the stationary blades are connected with the shell; a driving motor is arranged on the outer upper part of the shell; an output shaft of the driving motor is inserted into the shell, and is positioned in a circumference enclosed by the stationary blades; the moving impeller rotor is fixedly connected with the output shaft of the driving motor; the moving blades are circumferentially and fixedly arranged on the moving impeller rotor; the rotating plane of the moving blades is perpendicular to the output shaft of the driving motor. According to the device, the stationary blades and the moving blades are combined to realize the two-stage separation of the pulverized coal particles; the final pulverized coal fineness can be adjusted by adjusting the rotating speed of the moving impeller rotor, so that ideal subsequent combustion effects are ensured.
Description
Technical field
The utility model relates to the selective meal separation technology field in the commercial Application such as electric power, petrochemical industry, cement, a kind of pulverized coal particle Dynamic Separation device particularly rotor and stator blade being combined.
Background technology
Every profession and trade pulverized coal particle separator used is baffle-type substantially at present, it has all adopted static separation technology, the fineness of separated effect, separated rear coal dust can only rely on the corner of baffle plate and the change of ventilation to realize, have that separative efficiency is low, fineness of pulverized coal regulates the large problem of difficulty, make pulverized coal particle thicker and inhomogeneous, not only affect the efficiency of pulverized coal preparation system early stage, and the follow-up thermal efficiency or even the security that also can have influence on boiler.
Summary of the invention
The utility model provides a kind of pulverized coal particle Dynamic Separation device, and it can regulate easily the fineness of coal dust in separation process, makes the fineness of pulverized coal after separation even, thereby reaches desirable combustion efficiency, improves economy and the security of boiler operatiopn.
For achieving the above object, the technical scheme that the utility model is taked is: a kind of pulverized coal particle Dynamic Separation device, and it comprises housing, flour extraction pipe, powder retrieving pipe and drive motors; Flour extraction pipe is arranged at housing upper end, and powder retrieving pipe is arranged at housing bottom, and flour extraction pipe, powder retrieving pipe all communicate with enclosure interior;
In housing, be provided with inner barrel, stator blade, moving vane and moving vane rotor; The upper end open of inner barrel, lower end communicates with powder retrieving pipe;
Stator blade quantity is more than 1, by circumferential arrangement between inner barrel upper end and separator housing; The upper end of each stator blade connects housing;
Drive motors is installed on the outer top of housing, and motor output shaft passes housing, and is positioned at the circumference inside that stator blade surrounds;
Moving vane rotor is fixedly connected with drive motors output shaft, and moving vane quantity is more than 1, by circumferential arrangement, be fixedly installed on moving vane rotor; The rotational plane of moving vane is perpendicular to motor output shaft.
As a kind of improvement, the utility model also comprises controllable register, and it is installed in the cavity between inner barrel barrel and housing; The two ends of controllable register are rotationally connected respectively inner barrel barrel and housing.The flat inclination of controllable register is adjustable, for the flow direction of coal dust change coal dust from powder inlet pipe enters; On the other hand, coal dust clashes into controllable register and also can reach the object of initial gross separation.
As a kind of improvement, the utility model also comprises frequency converter, and frequency converter connects drive motors, and controls the rotating speed of drive motors.In the specific implementation, frequency converter can be installed in master-control room, and connects drive motors by cable.Effect is: as the frequency converter of selecting can be within the scope of 0 ~ 50Hz step-less adjustment, drive motors drives moving vane rotary after frequency converter effect, movable vane wheel speed can regulate in 0 ~ 135rpm level, thereby the centrifugal force size of Disengagement zone internal solid particle while regulating moving vane rotation, the separated fineness of change solid particles.Drive motors can be selected the form of the subsidiary reductor of variable-frequency motor of the prior art, or selects buncher of the prior art.
Preferably, controllable register described in the utility model is axial adjustment baffle plate, comprises rotating shaft; Rotating shaft one end connects inner barrel barrel, and the other end connects housing.Further, the rotating shaft two ends of axial adjustment baffle plate are arranged on inner barrel barrel and housing by axle sleeve respectively, and the angular adjustment of controllable register realizes by the rotation of rotating shaft, and adjustment process bottom bracket axle is fixed.
Preferably, the quantity of stator blade described in the utility model is 60, is uniformly distributed on same circumference.Stator blade act as primary separation, when large pulverized coal particle clashes into stator blade, will fall in powder retrieving pipe because of Action of Gravity Field; Simultaneously stator blade also play change pulverized coal flow to effect, the space between adjacent stator blade makes pulverized coal particle enter rotating separation district.
Preferably, the quantity of moving vane described in the utility model is 24, is uniformly distributed on same circumference.The rotating speed of movable vane wheel changes the granularity size that can change separated coal dust; Bulky grain coal dust after separation falls back in powder retrieving pipe under inner barrel, and short grained coal dust enters into flour extraction pipe.
As a kind of improvement, flour extraction pipe described in the utility model is " people " font pipeline, comprises 2 flour extraction pipe arms; Drive motors is installed on two housings between flour extraction pipe arm, to facilitate the layout of flour extraction pipe pipeline to connect.Further, the cross section of 2 flour extraction pipe arms is semicircle, can reduce the wearing and tearing of pipeline.
The utility model is in when application, and the coal dust entering from powder inlet pipe changes flow direction by axial adjustment baffle effect, arrives stator blade region, and the pulverized coal particle that particle is larger clashes into after stator blade because Action of Gravity Field falls in powder retrieving pipe; All the other particles enter dynamic rotary Disengagement zone; In dynamic rotary Disengagement zone, the rotation that drives moving vane rotor is rotated in motor operation rotating shaft, thereby drive moving vane to rotate, air-flow in region produces rotation under the effect of moving vane, coal dust particle is subject to the effect of centrifugal force, be directly proportional to himself tangential velocity, the diameter of particle and the superficial density of particle, when the centrifugal force being subject to when coal dust particle is greater than the traction of swirling eddy, coal dust particle will be separated.In separation process, the rotating speed that can move by regulating vane rotor regulates the separated fineness of final acquisition: the diameter of particle is larger, and separation is easier; When spinner velocity is higher, the particle that diameter is less also can be separated.
The beneficial effects of the utility model are: by stator blade is combined with moving vane, the two-stage that reaches pulverized coal particle is separated; When pulverized coal particle is positioned at dynamic rotary Disengagement zone, regulating the rotating speed of moving vane rotor is the separated fineness of adjustable final acquisition, makes the separation of coal dust more even and adjustable, has guaranteed follow-up desirable combustion efficiency.Rotational speed regulation the utility model for movable vane wheel is realized by adjusting motor speed, and the rotating speed of motor can complete by Background control, easy to operate.
Accompanying drawing explanation
Figure 1 shows that the utility model structural representation;
Figure 2 shows that dynamic rotary of the present utility model Disengagement zone structural representation.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, be described further.
In conjunction with Fig. 1 and Fig. 2, the utility model comprises: housing, flour extraction pipe 7, powder retrieving pipe 6 and drive motors 1; Flour extraction pipe 7 is arranged at housing upper end, and powder retrieving pipe 6 is arranged at housing bottom, and flour extraction pipe 7, powder retrieving pipe 6 all communicate with enclosure interior; In housing, be provided with inner barrel 8, stator blade 3, moving vane 2 and moving vane rotor 21; The upper end open of inner barrel 8, lower end communicates with powder retrieving pipe 6; Stator blade 3 quantity are more than 1, by circumferential arrangement between inner barrel 8 upper ends and housing; The upper end of each stator blade 3 connects housing; Drive motors 1 is installed on the outer top of housing, and motor output shaft 11 passes housing, and is positioned at the circumference inside that stator blade 3 surrounds; Moving vane rotor 21 is fixedly connected with drive motors output shaft 11, and moving vane 2 quantity are more than 1, by circumferential arrangement, be fixedly installed on moving vane rotor 21; The rotational plane of moving vane 2 is perpendicular to motor output shaft 11;
Drive motors 1 rotating speed regulates by frequency converter, frequency converter can be within the scope of 0 ~ 50Hz step-less adjustment, drive motors 1 drives moving vane rotor 21 rotations after frequency converter effect, moving vane rotor 21 rotating speeds can regulate in 0 ~ 135rpm level, thereby the centrifugal force size of Disengagement zone internal solid particle while regulating moving vane 2 rotation, the separated fineness of change solid particles;
Controllable register 4 is installed in the cavity between inner barrel 8 barrels and separator housing; Controllable register 4 is axial adjustment baffle plate, comprises rotating shaft; Rotating shaft one end connects inner barrel 8, and the other end connects housing; The rotating shaft two ends of axial adjustment baffle plate 4 are arranged on inner barrel barrel and separator housing by axle sleeve respectively, and the angle of inclination of controllable register 4 regulates the rotation by rotating shaft to realize, and adjustment process bottom bracket axle is fixed;
During application, the coal dust entering from powder inlet pipe changes flow directions by axial adjustment baffle plate 4 effect, arrives stator blade 3 regions, and the pulverized coal particle that particle is larger clashes into after stator blade 3 because Action of Gravity Field falls in powder retrieving pipe 6; All the other particles enter dynamic rotary Disengagement zone; In dynamic rotary Disengagement zone, the rotation that drives moving vane rotor is rotated in motor operation rotating shaft, thereby drive moving vane to rotate, air-flow in region produces rotation under the effect of moving vane, coal dust particle is subject to the effect of centrifugal force, be directly proportional to himself tangential velocity, the diameter of particle and the superficial density of particle, when the centrifugal force being subject to when coal dust particle is greater than the traction of swirling eddy, coal dust particle will be separated, bulky grain coal dust after separation falls back in powder retrieving pipe 6 under inner barrel, and short grained coal dust enters into flour extraction pipe 7.In separation process, the rotating speed that can move by regulating vane rotor regulates the separated fineness of final acquisition: the diameter of particle is larger, and separation is easier; When spinner velocity is higher, the particle that diameter is less also can be separated.
Claims (9)
1. a pulverized coal particle Dynamic Separation device, is characterized in that, comprises housing, flour extraction pipe, powder retrieving pipe, drive motors; Flour extraction pipe is arranged at housing upper end, and powder retrieving pipe is arranged at housing bottom, and flour extraction pipe, powder retrieving pipe all communicate with enclosure interior;
In housing, be provided with inner barrel, stator blade, moving vane and moving vane rotor; The upper end open of inner barrel, lower end communicates with powder retrieving pipe;
Stator blade quantity is more than 1, by circumferential arrangement between inner barrel upper end and housing; The upper end of each stator blade connects housing;
Drive motors is installed on the outer top of housing, and motor output shaft passes housing, and is positioned at the circumference inside that stator blade surrounds;
Moving vane rotor is fixedly connected with drive motors output shaft, and moving vane quantity is more than 1, by circumferential arrangement, be fixedly installed on moving vane rotor; The rotational plane of moving vane is perpendicular to motor output shaft.
2. pulverized coal particle Dynamic Separation device according to claim 1, is characterized in that, also comprises controllable register, and it is installed in the cavity between inner barrel barrel and housing; Controllable register two ends are rotationally connected respectively separator housing and inner barrel.
3. pulverized coal particle Dynamic Separation device according to claim 1, is characterized in that, also comprises frequency converter, and frequency converter connects drive motors, and controls the rotating speed of drive motors.
4. pulverized coal particle Dynamic Separation device according to claim 2, is characterized in that, described controllable register is axial adjustment baffle plate, and it comprises rotating shaft; Rotating shaft one end connects inner barrel barrel, and the other end connects housing.
5. according to the pulverized coal particle Dynamic Separation device described in claims 1 to 3 any one, it is characterized in that, the quantity of described stator blade is 60, is uniformly distributed on same circumference.
6. according to the pulverized coal particle Dynamic Separation device described in claims 1 to 3 any one, it is characterized in that, the quantity of described moving vane is 24, is uniformly distributed on same circumference.
7. according to the pulverized coal particle Dynamic Separation device described in claims 1 to 3 any one, it is characterized in that, described flour extraction pipe is " people " font pipeline, comprises 2 flour extraction pipe arms; Described drive motors is installed on two housings between the arm of powder delivery shop.
8. pulverized coal particle Dynamic Separation device according to claim 7, is characterized in that, 2 flour extraction pipes of described flour extraction pipe prop up tube section for semicircle.
9. pulverized coal particle Dynamic Separation device according to claim 4, is characterized in that, the rotating shaft two ends of described axial adjustment baffle plate are rotationally connected inner barrel barrel and separator housing by axle sleeve respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320609914.9U CN203540914U (en) | 2013-09-30 | 2013-09-30 | Dynamic separation device for pulverized coal particles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320609914.9U CN203540914U (en) | 2013-09-30 | 2013-09-30 | Dynamic separation device for pulverized coal particles |
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| Publication Number | Publication Date |
|---|---|
| CN203540914U true CN203540914U (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320609914.9U Expired - Fee Related CN203540914U (en) | 2013-09-30 | 2013-09-30 | Dynamic separation device for pulverized coal particles |
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| CN (1) | CN203540914U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111744653A (en) * | 2020-06-05 | 2020-10-09 | 华电电力科学研究院有限公司 | Structural system for improving pulverized coal separation efficiency of fan coal mill |
-
2013
- 2013-09-30 CN CN201320609914.9U patent/CN203540914U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111744653A (en) * | 2020-06-05 | 2020-10-09 | 华电电力科学研究院有限公司 | Structural system for improving pulverized coal separation efficiency of fan coal mill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20210930 |