CN203253640U - Dynamic coal powder separator of medium-speed mill - Google Patents
Dynamic coal powder separator of medium-speed mill Download PDFInfo
- Publication number
- CN203253640U CN203253640U CN 201320278360 CN201320278360U CN203253640U CN 203253640 U CN203253640 U CN 203253640U CN 201320278360 CN201320278360 CN 201320278360 CN 201320278360 U CN201320278360 U CN 201320278360U CN 203253640 U CN203253640 U CN 203253640U
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Abstract
The utility model discloses a dynamic coal power separator of a medium-speed mill. The dynamic coal powder separator comprises a separator housing, a folding adjusting baffle plate arranged at the upper part of the separator housing and a coal drop pipe arranged at the center of the separator housing, and also comprises a dynamic rotation separating device, wherein the dynamic rotation separating device comprises a speed reducer arranged on the separator housing, a driving motor for driving the speed reducer, and an impeller which is arranged at the bottom of the separator housing and sleeved at the periphery of the coal drop pipe; the rotating shaft of the speed reducer penetrates through the separator housing and is fixedly connected with the impeller; and the impeller can rotate around the coal drop pipe under the driving of the speed reducer. According to the dynamic coal power separator of the medium-speed mill, the baffle plate is combined with moving blades to achieve two-level separation of coal powder particles; and when the coal powder particles are positioned at a dynamic rotation separating region, obtained separation fineness can be adjusted finally by adjusting the rotation speed of a rotor of a moving impeller, so that the separation of coal powder is more uniform and adjustable, and a subsequent ideal combustion effect is ensured.
Description
Technical field
The utility model relates to the dynamic coal dust classifier of a kind of medium-speed pulverizer in the commercial Application such as electric power, petrochemical industry, cement.
Background technology
The used medium-speed pulverizer coal dust classifier of every profession and trade is baffle-type substantially at present, it has all adopted the static separation technology, the fineness of coal dust can only rely on the corner of baffle plate and the change of ventilation to realize after the effect of separating, the separation, have that separative efficiency is low, fineness of pulverized coal regulates the large problem of difficulty, so that pulverized coal particle is thicker and inhomogeneous, not only affect the efficient of pulverized coal preparation system early stage, and the follow-up thermal efficiency or even the security that also can have influence on boiler.
The utility model content
The utility model provides a kind of medium-speed pulverizer dynamic coal dust classifier, and it can regulate coal dust easily in separation process fineness makes the fineness of pulverized coal after the separation even, thereby reaches desirable combustion efficiency, improves economy and the security of boiler operatiopn.
For solving the problems of the technologies described above, the technical solution of the utility model is:
The dynamic coal dust classifier of a kind of medium-speed pulverizer, comprise shell separator, be located at being folded to controllable register and being located at the coal spout of shell separator central authorities of shell separator top, also comprise: the dynamic rotary separator, described dynamic rotary separator comprises: be installed in the reductor on the shell separator, be used for driving the drive motors of reductor and be located at the shell separator bottom and be socketed in the movable vane wheel of coal spout periphery, shell separator is passed in the rotating shaft of described reductor and the movable vane wheel is connected, under the drive of reductor, the movable vane wheel can rotate around coal spout.
Adopt technique scheme, separate by baffle plate is combined the two-stage that reaches pulverized coal particle with the dynamic rotary separator; The coal dust of milling through coal pulverizer changes flow direction by baffle effect, arrives baffle area, behind the larger pulverized coal particle impingement baffles of particle since Action of Gravity Field fall in the coal mill system; All the other particles enter the dynamic rotary Disengagement zone; In the dynamic rotary Disengagement zone, motor operation rotating shaft is rotated and is driven the reductor rotating shaft, thereby driving the movable vane wheel rotates, air-flow in the zone produces rotation under the effect of movable vane wheel, coal dust particle is subject to the effect of centrifugal force, be directly proportional with the tangential velocity of himself, the diameter of particle and the superficial density of particle, the centrifugal force that is subject to when coal dust particle is during greater than the traction of swirling eddy, coal dust particle will be separated, bulky grain coal dust after the separation falls back under the inner barrel and is back to coal pulverizer in the powder retrieving pipe and refaces, and short grained coal dust enters into flour extraction pipe.In separation process, can regulate by the rotating speed of regulation moving vane rotor the separation fineness of final acquisition: the diameter of particle is larger, and it is easier to separate; When spinner velocity was higher, the particle that diameter is less also can be separated.
In order to reach better separating effect, described movable vane wheel comprises annulus, lower annulus, vertical blade and movable vane wheel rotor; Be concentric, spaced set between described upper annulus and the lower annulus, the external diameter of upper annulus is greater than the external diameter of lower annulus; Described vertical blade by circumferential arrangement, be located between upper annulus and the lower annulus equably, and upper annulus and lower annulus be connected as a single entity; Described movable vane wheel rotor is connected in the inside of lower annulus, and shell separator is passed in the rotating shaft of described reductor and movable vane wheel rotor is connected.
The change of the rotating speed of above-mentioned movable vane wheel can change the granularity size of separated coal dust; During bulky grain coal dust after the separation fell back coal mill system along inner barrel, short grained coal dust entered into flour extraction pipe.
Also comprise regulating the frequency converter of drive motors rotating speed.
Above-mentioned frequency converter can be installed in the on-site control, is used for regulating the rotating speed of drive motors.The frequency converter of for example selecting can be in the 0-50Hz scope step-less adjustment, drive the rotation of movable vane wheel after the effect of drive motors process frequency converter, the movable vane wheel speed can be regulated in the 0-135rpm level, thereby the centrifugal force of Disengagement zone internal solid particle size during the regulation moving blade rotary, the separation fineness of change solid particles.Also can directly select in addition the motor of adjustable speed as the drive motors of movable vane wheel rotor.
In order to reach better sealing effectiveness, the sealing of described reductor comprises hermetic seal and mechanical seal.
The technology that the utility model is not particularly limited is prior art.
The dynamic coal dust classifier of the utility model medium-speed pulverizer separates by baffle plate is combined the two-stage that reaches pulverized coal particle with moving vane; When pulverized coal particle was positioned at the dynamic rotary Disengagement zone, the rotating speed of regulation moving vane rotor can be regulated the separation fineness of final acquisition, so that the separation of coal dust is more even and adjustable, had guaranteed follow-up desirable combustion efficiency; Rotational speed regulation the utility model for the movable vane wheel realizes that by electric machine speed regulation the speed governing of motor can be finished by Background control, and is easy to operate.
Description of drawings
Figure 1 shows that the dynamic coal dust cyclone separator arrangement of the utility model medium-speed pulverizer schematic diagram;
Figure 2 shows that the utility model dynamic rotary Disengagement zone structural representation.
Figure 3 shows that the sealed structural representation of the utility model reductor.
Among the figure, 1 is drive motors, and 2 is reductor, and 3 is shell separator, and 4 are the movable vane wheel, and 5 are rotating shaft, and 6 is vertical blade, and 7 are mechanical seal, and 8 are hermetic seal, and 9 is coal spout, and 10 for being folded to controllable register, and 11 is air inlet pipe.
The specific embodiment
In order to understand better the utility model, further illustrate content of the present utility model below in conjunction with embodiment, but content of the present utility model not only is confined to the following examples.
The dynamic coal dust classifier of medium-speed pulverizer as Figure 1-3, comprise shell separator 3, be located at being folded to controllable register 10 and being located at the coal spout 9 of shell separator 3 central authorities of shell separator 3 tops, also comprise: the dynamic rotary separator, described dynamic rotary separator comprises: be installed in the reductor 2 on the shell separator 3, be used for driving the drive motors of reductor 2 and be located at shell separator 3 bottoms, and the movable vane that is socketed in coal spout 9 peripheries takes turns 4, be used for regulating the frequency converter of drive motors rotating speed, the rotating shaft 5 of described reductor 2 is passed shell separator 3 and is connected with movable vane wheel 4, under the drive of reductor 2, movable vane wheel 4 can rotate around coal spout 9;
Above-mentioned movable vane wheel 4 comprises that annulus, lower annulus, vertical blade 6 and movable vane take turns 4 rotors; Be concentric, spaced set between described upper annulus and the lower annulus, the external diameter of upper annulus is greater than the external diameter of lower annulus; Described vertical blade 6 by circumferential arrangement, be located between upper annulus and the lower annulus equably, and upper annulus and lower annulus be connected as a single entity; Described movable vane is taken turns the inside that 4 rotors are connected in lower annulus, and the rotating shaft 5 of described reductor 2 is passed shell separator 3 and taken turns 4 rotors with movable vane and be connected.
The sealing of above-mentioned reductor 2 comprises hermetic seal 8 and mechanical seal 7.
The coal dust classifier that above-mentioned medium-speed pulverizer adopts is the form that static baffle plate and dynamic rotary combine, it and coal pulverizer consist of an integral body, it has a cylindrical or conical shell body, with flange and coal pulverizer mill the district link to each other,, can adjust the angle of baffle plate in the coal pulverizer hull outside along a plurality of controllable registers that are folded to of even circumferential distribution on top.In system, after raw coal enters coal pulverizer, be milled into the pulverized coal particle that thickness does not wait through grinding roller.Wind powder mixture is under the drive of wind, the baffle plate of at first flowing through changes flow direction and produces rotation, coal dust is realized the one-level pre-separation under centrifugal force and Action of Gravity Field, but the coal dust particle of separating is thicker, therefore entering rotary Disengagement zone, the second level further separates, the rough coal powder of separating fall back coal pulverizer mill the district again grind, separate qualified fine breeze by entering burner hearth through flour extraction pipe.
Claims (4)
1. dynamic coal dust classifier of medium-speed pulverizer, comprise shell separator, be located at being folded to controllable register and being located at the coal spout of shell separator central authorities of shell separator top, it is characterized in that: also comprise: the dynamic rotary separator, described dynamic rotary separator comprises: be installed in the reductor on the shell separator, be used for driving the drive motors of reductor and be located at the shell separator bottom, and the movable vane that is socketed in the coal spout periphery is taken turns, shell separator is passed in the rotating shaft of described reductor and the movable vane wheel is connected, under the drive of reductor, the movable vane wheel can rotate around coal spout.
2. the dynamic coal dust classifier of medium-speed pulverizer as claimed in claim 1 is characterized in that: described movable vane wheel comprises annulus, lower annulus, vertical blade and movable vane wheel rotor; Be concentric, spaced set between described upper annulus and the lower annulus, the external diameter of upper annulus is greater than the external diameter of lower annulus; Described vertical blade by circumferential arrangement, be located between upper annulus and the lower annulus equably, and upper annulus and lower annulus be connected as a single entity; Described movable vane wheel rotor is connected in the inside of lower annulus, and shell separator is passed in the rotating shaft of described reductor and movable vane wheel rotor is connected.
3. the dynamic coal dust classifier of medium-speed pulverizer as claimed in claim 1 or 2 is characterized in that: the frequency converter that also comprises regulating the drive motors rotating speed.
4. the dynamic coal dust classifier of medium-speed pulverizer as claimed in claim 1 or 2, it is characterized in that: the sealing of described reductor comprises hermetic seal and mechanical seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320278360 CN203253640U (en) | 2013-05-20 | 2013-05-20 | Dynamic coal powder separator of medium-speed mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320278360 CN203253640U (en) | 2013-05-20 | 2013-05-20 | Dynamic coal powder separator of medium-speed mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203253640U true CN203253640U (en) | 2013-10-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320278360 Expired - Fee Related CN203253640U (en) | 2013-05-20 | 2013-05-20 | Dynamic coal powder separator of medium-speed mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203253640U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110064491A (en) * | 2019-05-21 | 2019-07-30 | 江苏方天电力技术有限公司 | A kind of medium-speed pulverizer coal powder density and fineness regulation device and application method |
| CN111111901A (en) * | 2019-12-28 | 2020-05-08 | 南京楚卿电子科技有限公司 | Dynamic pulverized coal separator for medium-speed mill |
| CN114025862A (en) * | 2019-06-04 | 2022-02-08 | Fl史密斯公司 | Integrated separator |
| CN114618775A (en) * | 2022-03-10 | 2022-06-14 | 中材淄博重型机械有限公司 | Energy-saving environment-friendly unpowered composite powder concentrator |
-
2013
- 2013-05-20 CN CN 201320278360 patent/CN203253640U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110064491A (en) * | 2019-05-21 | 2019-07-30 | 江苏方天电力技术有限公司 | A kind of medium-speed pulverizer coal powder density and fineness regulation device and application method |
| CN110064491B (en) * | 2019-05-21 | 2023-11-28 | 江苏方天电力技术有限公司 | Medium speed coal mill pulverized coal concentration and fineness adjusting device and application method |
| CN114025862A (en) * | 2019-06-04 | 2022-02-08 | Fl史密斯公司 | Integrated separator |
| CN111111901A (en) * | 2019-12-28 | 2020-05-08 | 南京楚卿电子科技有限公司 | Dynamic pulverized coal separator for medium-speed mill |
| CN114618775A (en) * | 2022-03-10 | 2022-06-14 | 中材淄博重型机械有限公司 | Energy-saving environment-friendly unpowered composite powder concentrator |
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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 |
Granted publication date: 20131030 |
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| CF01 | Termination of patent right due to non-payment of annual fee |