CN100518945C - Dynamic separator - Google Patents
Dynamic separator Download PDFInfo
- Publication number
- CN100518945C CN100518945C CNB2006100240138A CN200610024013A CN100518945C CN 100518945 C CN100518945 C CN 100518945C CN B2006100240138 A CNB2006100240138 A CN B2006100240138A CN 200610024013 A CN200610024013 A CN 200610024013A CN 100518945 C CN100518945 C CN 100518945C
- Authority
- CN
- China
- Prior art keywords
- bearing
- separator
- rotor
- dynamic separator
- dynamic
- 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.)
- Active
Links
Images
Landscapes
- Crushing And Grinding (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
This invention discloses a dynamic separator, including dynamic separator roof, frequency motors, turbines worm reducer, the initiative launches, V-belt, driven round rotor device, device driver and leaves, housings and one pair of bearings; Frequency motors and turbines worm reducer coupling linked together, the initiative round worm reducer installed in the turbine output shaft, and the blades fixed link rotor; Rotor separator device in the internal roof, and connect with dynamic separation of the drive flange device, driver installed in the separator in the middle of the plane; Bearing level installed in the bearing; and bearing block connect with rotor flange. This invention used in the HP-bowl-speed mill, can reduce small particles unnecessary re-frequency separation efficiency in the mill grinding, reducing the load cycle, thereby improving energy Mill.
Description
Technical field
The present invention relates to a kind of coal pulverizer, the separator in particularly a kind of HP bowl pulverizer.
Background technology
Present known HP bowl pulverizer structure as shown in Figure 1, wherein separator adopts static separation device 1.The structure of static separation device 1 mainly comprises inner cone drum body 12, static separation device top cover 16, inner cone 14, venturi tube 15, is folded to parts such as an adjusting device 11 as shown in Figure 2.Inner cone 14 microcephalies are supported on downward vertically and separate body 10 inside, and are fixing with the inner cone drum body 12 of bolt and separator top cover 116; Reverse taper is enclosed within on the coal-feeding tube of venturi tube 15, connects with bolt; By connecting rod, be folded to the door gear 11 that is folded to that parts such as door, control stick form and be installed in static separation device top cover 16 tops.
The major function of HP bowl pulverizer is that diameter is ground to form coal dust about 0.075mm, boiler of feeding burning smaller or equal to the raw coal of 38mm.Being used for the dry and heat primary air of carrying the coal dust in the coal pulverizer enters from the air inlet of the side body 2 of mill bowl 3 bottoms, and around grinding the impeller unit 8 that bowl hub 4 is upward through the mill bowl edge, the impeller unit 8 of rotation makes air-flow be evenly distributed on mill bowl 3 edges and has improved the speed of air-flow, meanwhile, coal dust and air-flow have just mixed, and air-flow is carrying coal dust and impacting the fixedly deflecting plate 9 that is fixed on the separation body 10.Little and the dry coal dust of particle still remains in the air-flow and is carried along fixing deflecting plate 9 and rises to separator 1, the bulky grain coal dust then falls after rise to mill bowl 3 is further milled, and the fixedly deflecting plate 9 that separates body 10 bottoms makes coal dust carry out primary separation in the zone of milling.
Lighter particle is carried into separator top cover 16 by air-flow to carry out the second level and separates, and the crooked herein gate flap sheet 13 that is folded to makes wind powder mixture produce cyclonic motion to cause heavy particle to lose momentum and fall from air-flow.
Turn back to the zone of milling of mill bowl 3 along the inwall of inner cone 14 being folded to heavier coal grain that 15 li of gate flap sheet 13 and venturi tubes separate.Inner cone 14 is separated heavy particulate coal from the coal pulverizer regions of turbulent flow.Heavy particulate coal outside regions of turbulent flow is returned mill bowl 3 under the gravity effect.
Pass air-flow and fall into external foreign material that are difficult for grinding in side body 2 zone and be installed in screeding device 7 on the mill bowl hub 4 and scrape in the hole on the side organism soleplate 6, enter stone coal collecting system 5 then.
Because existing static separation device 1 structural limitations, tens oblong aperture have been opened on around the inner cone drum body 12, the aperture that adjustment is folded to gate flap sheet 13 is come the aisle spare of control hole, change the fineness of coal dust, but the steel plate zone between the Kong Yukong has stoped passing through of coal dust, a large amount of qualified coal dusts are milled repeatedly in coal pulverizer inside, increased interior circulating load, reduced the abrasive dust separative efficiency.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of fineness of grinding, separative efficiency and inhomogeneity dynamic separator that is used for bowl pulverizer of improving.
For solving the problems of the technologies described above, dynamic separator of the present invention comprises dynamic separator top cover, variable-frequency motor, turbine and worm decelerator, driving wheel, V band, driven pulley, rotor arrangement, blade and drive unit, bearing block and pair of bearings; Variable-frequency motor and turbine and worm decelerator connect together by shaft coupling, and driving wheel is installed on the output shaft of turbine and worm decelerator, drive the driven pulley that links together with drive unit by the V band, and blade is fixedlyed connected with rotor arrangement; Rotor arrangement is positioned at separator top cover inside, is connected by the bearing block on the drive unit of flange and dynamic separator, and drive unit is installed in and separates centre position, plane on the body; The bearing level is installed on the bearing block; The lower section of described separator top cover is greater than the cross section, top; Described blade and rotor arrangement are formed the little down big cone rotor body of; Described cone rotor body matches with the separator top cover.
Described bearing adopts the grease lubrication angular contact ball bearing.
A thermal resistance that is used for the monitoring bearing temperature respectively is housed on the described bearing.
Described bearing is upper and lower respectively an oil sealing that is used to protect bearing.
Also comprise a labyrinth seal that can prevent that dust from entering on the described drive unit.
The present invention is applied in the HP bowl pulverizer, compare with employing static separation device, separative efficiency has had significant raising after adopting dynamic separator, consequently under the situation of exerting oneself equally, the interior circulating load of dynamic separator is little, because coal pulverizer can reach imperial palace circulation again by increasing load, that is to say that the coal pulverizer maximum capacity has improved.The load of the said increase in front can be that higher coal dust is exerted oneself specifically; Select littler Ha Shi grindability for use and improve fineness of pulverized coal.
Description of drawings
Fig. 1 is the structure chart of the HP bowl pulverizer of available technology adopting static separation device;
Fig. 2 is the structure chart of static separation device in the prior art;
Fig. 3 is a structure chart of the present invention;
Fig. 4 is the enlarged drawing of circle part among Fig. 3;
Fig. 5 adopts HP bowl pulverizer structure chart of the present invention.
The specific embodiment
The present invention is further detailed explanation below in conjunction with accompanying drawing.
As shown in Figure 3, the lower section of separator top cover 17 is greater than the cross section, top, and promptly separator top cover 17 is for going up little structure down greatly.Be arranged between blade 28 on the rotor arrangement 27 and the armature spindle and form angle, blade 28 is formed the little down big cone rotor body of with rotor arrangement 27.The cone rotor body matches with separator top cover 17.
Drive the coal pulverizer of attitude separator because interior circulating load is littler than static separation device, so can improve pulverizer capacity, this realizes owing to separative efficiency improves, avoided the unnecessary grinding times again of fine particle (granularity is less than 200 purposes) in other words, qualified like this coal dust just can be discharged coal pulverizer faster.That is to say: can improve pulverizer capacity under identical ature of coal and the fineness requirement; Can improve fineness of pulverized coal under the perhaps identical ature of coal and the requirement of exerting oneself.
The HP coal pulverizer adopts device provided by the present invention back pulverized coal particle distribution relation as shown in the table:
| Sequence number | Unit | By 200 mesh sieve | By 100 mesh sieve | 50 mesh sieves residue |
| 1 | ％ | 80 | 98.2 | 0.05 |
| 2 | ％ | 85 | 99.5 | 0.00 |
| 3 | ％ | 90 | 100.00 | 0.00 |
Because Dynamic Separation apparatus of the present invention, the calibration curve of drawing out when the control of its dynamic separator will be according to coal-supplying amount and field adjustable is determined rotor speed.Power Plant DCS System control frequency converter, frequency converter changes the variable-frequency motor rotating speed, thereby changes the dynamic separator rotating speed.
Frequency converter is compared with mechanical speed change, hardly with safeguarding that reliability is very high.Blade 16 can adopt wear-resisting alloy steel to make, unitary tapered structure, and projected life can be above 50000 hours.
Dynamic separator simple in structure, easy to maintenance.Lubricated, the gear reducer lube of motor bearings, dynamic separator bearing, turbine and worm decelerator bearing changed and the tensioner of belt etc. was carried out one to twice in general 1 year.The replacing of belt, oil sealing and rotor was carried out once in general three to five years.
The HP bowl pulverizer for a long time with its good performance, compact structure and easily Operation and Maintenance be subjected to liking of users at home and abroad, its dynamic separator technology has also been acted on the consistent advantage of HP coal pulverizer, can play a significant role on fired power generating unit.
Along with the fast development of electric utility, countries in the world are more and more higher to power plant's environmental protection requirement, and many units are all using low Nox (NOx) draining technology.Do not increase operating cost again in order to reduce NOx and fly ash emission amount, carried out technological improvement as the coal pulverizer of steam generator system Important Auxiliary equipment is also corresponding, adopting the dynamic separator technology is method preferably.
Claims (5)
1, a kind of dynamic separator, it is characterized in that, comprise dynamic separator top cover (17), variable-frequency motor (19), turbine and worm decelerator (20), driving wheel (21), V band (22), driven pulley (23), rotor arrangement (27), blade (28) and drive unit (26), bearing block (25) and pair of bearings (24); Variable-frequency motor (19) and turbine and worm decelerator (20) connect together by shaft coupling, driving wheel (21) is installed on the output shaft of turbine and worm decelerator (20), drive the driven pulley (23) that links together with drive unit (26) by V band (22), blade (28) is fixedlyed connected with rotor arrangement (27); Rotor arrangement (27) is positioned at separator top cover (17) inside, is connected by the bearing block (25) on the drive unit (26) of flange and dynamic separator, and drive unit (26) is installed in and separates centre position, plane on the body; Bearing (24) level is installed on the bearing block (25); The lower section of described separator top cover (17) is greater than the cross section, top; Described blade (28) is formed the little down big cone rotor body of with rotor arrangement (27); Described cone rotor body matches with separator top cover (17).
2, dynamic separator according to claim 1 is characterized in that, described bearing (24) is the grease lubrication angular contact ball bearing.
3, dynamic separator according to claim 2 is characterized in that, a thermal resistance (29) that is used for monitoring bearing (24) temperature is respectively arranged on the described bearing (24).
4, dynamic separator according to claim 2 is characterized in that, described bearing (24) is upper and lower respectively an oil sealing (31) that is used to protect bearing.
5, dynamic separator according to claim 1 is characterized in that, also comprises a labyrinth seal (30) that can prevent that dust from entering on the described drive unit (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100240138A CN100518945C (en) | 2006-02-21 | 2006-02-21 | Dynamic separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100240138A CN100518945C (en) | 2006-02-21 | 2006-02-21 | Dynamic separator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101024210A CN101024210A (en) | 2007-08-29 |
| CN100518945C true CN100518945C (en) | 2009-07-29 |
Family
ID=38743030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100240138A Active CN100518945C (en) | 2006-02-21 | 2006-02-21 | Dynamic separator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100518945C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103418483A (en) * | 2013-08-29 | 2013-12-04 | 济钢集团有限公司 | Abrasion-resistant impeller device of medium speed coal mill |
| CN106563537B (en) * | 2016-11-07 | 2019-02-05 | 西安交通大学 | The mill load detection method with sliding area vibration signal is left based on drum surface |
| CN107570273A (en) * | 2017-08-29 | 2018-01-12 | 徐州汉唐瑞清科技有限公司 | A kind of abrasive disk type spring becomes loading middling speed pulverized coal preparation equipment |
-
2006
- 2006-02-21 CN CNB2006100240138A patent/CN100518945C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101024210A (en) | 2007-08-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103846126B (en) | Plate washer automatically regulates efficient series connection biaxially dynamically sorting, returns powder milling device | |
| CN202052701U (en) | Powder concentrator capable of sorting out component materials having particles of rough, medium, and fine particle sizes | |
| CN202387599U (en) | Vortex combined powder separator | |
| CN104984911B (en) | A kind of rotor type powder sorter | |
| CN202962872U (en) | Device for milling and dynamically sorting recovered powder by means of classification at high efficiency for intermediate-speed coal mill | |
| CN206139273U (en) | Medium speed pulverizer sound leaf combination type separator | |
| CN202962563U (en) | Efficient tandem biaxial dynamic separating and recovery powder milling device with automatically regulated baffle plates | |
| CN202962874U (en) | High-efficiency dynamic sorting device with automatically-adjustable baffle | |
| CN100518945C (en) | Dynamic separator | |
| CN202962608U (en) | Crushing device and crushing system | |
| CN201320532Y (en) | Dynamic rotary separator | |
| CN202962875U (en) | High-efficiency dynamic sorting device with rotary outlet pipe | |
| CN107282320B (en) | Double mouse cage separator for coal mill | |
| CN1269580C (en) | Dynamic coal milling powder-selecting machine | |
| CN204892373U (en) | High dispersivity vortex selection powder machine | |
| CN201815364U (en) | Rotor-stator combination type pulverized coal separator | |
| CN204208656U (en) | Medium-speed pulverizer moving-stator blade is in conjunction with separator | |
| CN203437338U (en) | Automatic stop plate adjustment series-connection biaxial sorting device | |
| CN104001582B (en) | Screening, cloth, crushing all-in-one machine | |
| CN204035032U (en) | A kind of wind formula of sweeping is association of activity and inertia high efficiency dust separator | |
| CN103506210B (en) | Coal pulverizer with double separator | |
| CN202238670U (en) | Dynamic combined type coarse powder separator | |
| CN217368613U (en) | Multifunctional roller type vertical mill | |
| CN102580822A (en) | Compound-channel pendulous grinding machine and superfine powder processing system thereof | |
| CN202527226U (en) | Composite passage swing type grinding machine and superfine powder processing system thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161205 Address after: 200245 Jiangchuan Road, Shanghai, No. 230, building 1800, No. Patentee after: Shanghai electric heavy milling special equipment Co. Ltd. Patentee after: Shanghai Heavy Machines Plant Co., Ltd. Address before: 200245 Jiangchuan Road, Shanghai, No. 1800, No. Patentee before: Shanghai Heavy Machines Plant Co., Ltd. |