CN202962872U - Device for milling and dynamically sorting recovered powder by means of classification at high efficiency for intermediate-speed coal mill - Google Patents
Device for milling and dynamically sorting recovered powder by means of classification at high efficiency for intermediate-speed coal mill Download PDFInfo
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- CN202962872U CN202962872U CN 201220653414 CN201220653414U CN202962872U CN 202962872 U CN202962872 U CN 202962872U CN 201220653414 CN201220653414 CN 201220653414 CN 201220653414 U CN201220653414 U CN 201220653414U CN 202962872 U CN202962872 U CN 202962872U
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Abstract
The utility model provides a device for milling and dynamically sorting recovered powder by means of classification at high efficiency for an intermediate-speed coal mill. The device comprises a coal falling pipe, a separator upper conical body, a separator lower conical body, a separator barrel, a separator outlet pipe and a sorting deriving device, wherein the separator lower conical body comprises a separator lower conical body outer housing and a separator lower internal conical body, the lower end of the separator lower conical body outer housing is fixedly connected with a coal mill outlet outer housing, the end of the separator lower internal conical body is connected with a recovered powder milling external barrel, the recovered powder milling external barrel is internally provided with a recovered powder milling internal barrel fixed with the coal falling pipe, and a circle of conical recovered powder milling gears which are meshed with one another are arranged between the recovered powder milling internal barrel and the recovered powder milling external barrel; the inner end and the outer end of each recovered powder milling gear shaft of each conical recovered powder milling gear are respectively and fixedly connected with an internal bearing sleeve and a recovered powder milling driving shaft sleeve; and the internal bearing sleeve is connected with the recovered powder milling internal barrel, the recovered powder milling driving shaft sleeve is connected with the recovered powder milling external barrel and the coal mill outlet outer housing, the recovered powder milling gear shaft of one milling gear is fixed with an output shaft of a recovered powder milling variable frequency motor through a coupler with a reduction gearbox, the whole circle of recovered powder milling gears are driven by the recovered powder milling variable frequency motor to mill the recovered powder, and the milled coal powder is sorted and circulated again.
Description
Technical field
The utility model relates to that coal dust is milled, sorting machine, is that a kind of medium-speed pulverizer returns powder mill in grades, dynamic high-efficiency sorting unit specifically.
Background technology
Medium-speed pulverizer is used widely in the generating plant pulverized coal boiler unit pulverized-coal system because having the advantages such as unit power consumption of coal pulverizing is low, floor space is little, noise is little.But, in actual application in recent years, find that medium-speed pulverizer also exists some defectives or weak point, during as boiler burning coal variation, on the one hand, under same load, the boiler fired coal amount can increase substantially, needing to improve medium-speed pulverizer exerts oneself, satisfy the unit load requirement, still, improve medium-speed pulverizer and exert oneself, can make the fineness of pulverized coal chap, be unfavorable for boiler combustion; On the other hand, boiler burning coal variation, medium-speed pulverizer is milled to exert oneself and itself just may be reduced, and improves in other words pulverizer capacity and is restricted, thereby make unit load be restricted.That is to say, due to boilers of power plants ature of coal variation, cause the boiler fired coal amount to increase substantially, thereby cause the medium-speed pulverizer undercapacity, or cause the serious chap of fineness of pulverized coal because improving pulverizer capacity, thus cause the boiler combustion fly ash combustible material to improve, boiler efficiency reduces.
In order to alleviate or to address the above problem, lot of experiments has been done by scientific research institutions, and result of the test shows, to exist resistance large due to medium-speed pulverizer first wife's static separation device, the shortcomings such as the fineness of pulverized coal adjustable extent is little, and the pulverized coal fineness index is low have limited the medium-speed pulverizer performance.Along with the development of dynamic sorting technology, many power plant take to change the static separation device of the former configuration of medium-speed pulverizer into dynamic separator, exert oneself to improve medium-speed pulverizer.Because dynamic separator exists fineness of pulverized coal flexible adjustment, convenience, the fineness of pulverized coal adjustable extent is large, pulverized coal fineness index advantages of higher, and dynamic separator will replace the static separation device gradually, become large capacity unit medium-speed pulverizer standard configuration equipment.
The operation principle of dynamic separator is the movable vane rotary speed of rotator that changes separator, thereby regulates the fineness of pulverized coal of medium-speed pulverizer.In the actual application of dynamic separator, dynamic separator reduces fineness of pulverized coal by improving movable vane rotor speed, still, when reducing fineness of pulverized coal, Hui Fenliang can increase considerably, and makes the medium-speed pulverizer resistance increment, thereby has limited the raising of pulverizer capacity.Therefore, dynamic separator must reduce pulverizer capacity when reducing fineness of pulverized coal.
In order to solve or alleviate the above-mentioned application problem of medium-speed pulverizer dynamic separator, the utility model has drawn the advantage of Dynamic Separation technology, adopts back powder mill in grades technology, can realize reducing fineness of pulverized coal and improve the dual purpose that medium-speed pulverizer is exerted oneself.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of medium-speed pulverizer and returns powder mill in grades, dynamic high-efficiency sorting unit, fineness of pulverized coal is controlled, simultaneously, adopt back powder mill in grades device to carry out mill in grades to returning powder, improving milling of coal pulverizer exerts oneself and the efficiency of separation, exert oneself thereby reach to increase substantially, guarantee the qualified or decrease fineness of pulverized coal of fineness of pulverized coal, guarantee that pulverizer capacity is stable.
described medium-speed pulverizer returns the powder mill in grades, the dynamic high-efficiency sorting unit, comprise coal spout, separator, described separator comprises separator bottom cone, Membrane Separator Cylinder for CFB Boiler, separator top cone, the separator outlet pipe, the sorting drive unit, described separator bottom cone comprises separator bottom conoidal Shell and separator bottom inner cone, conoidal Shell lower end, described separator bottom is fixedly connected with the coal pulverizer discharge case, it is characterized in that: inner cone lower end, described separator bottom is close to back the powder outer cylinder body of milling, be positioned at described go back to powder mill outer cylinder body inside, fix back the powder inner barrel of milling around coal spout, at mill outer cylinder body and return powder and mill and be provided with all intermeshing tapers between inner barrel and return the powder gear of milling of described time powder, described taper return powder mill gear return powder mill gear shaft in, the outer end is fixedly connected with respectively internal bearing sleeve and returns the powder propeller shaft sleeve of milling, described internal bearing sleeve with return the powder inner barrel of milling and be connected, returning powder propeller shaft sleeve and coal pulverizer discharge case, time powder outer cylinder body of milling of milling is connected, one of them gear of milling return powder mill gear shaft through with the reduction box shaft coupling with return the mill output shaft of variable-frequency motor of powder and fix, returned powder and milled by this time powder powder gear mesh of milling that returns that variable-frequency motor drives complete cycle of milling, the coal dust after milling enters the sorting circulation again.
Described separator top cone and Membrane Separator Cylinder for CFB Boiler are tightly connected by the Membrane Separator Cylinder for CFB Boiler upper plate, are provided with in the upper end of described separator top cone the separator outlet plate that is attached thereto one.
Be provided with all stator blades in described Membrane Separator Cylinder for CFB Boiler, described stator blade upper end and Membrane Separator Cylinder for CFB Boiler upper plate are fixed, and the upper end of lower end and separator bottom inner cone is fixed.
Be provided with a tubular hollow shaft outside coal spout, the hollow shaft upper end is on the separator outlet plate and be provided with the hollow shaft upper sealing device that is fixedly connected with coal spout, hollow shaft is connected with slewing supporting device on the separator outlet plate, and the lower end of hollow shaft is positioned at Membrane Separator Cylinder for CFB Boiler or separator bottom cone and is provided with the hollow shaft lower sealing device that is fixedly connected with coal spout.
Described sorting drive unit comprises separator variable-frequency motor and the reduction box that is connected by shaft coupling with the output shaft of separator variable-frequency motor, the reduction box driving gear of described reduction box output and the engagement of the revolution Support Gear in described slewing supporting device, and drive the hollow shaft rotation.
Described hollow shaft lower outside is fixedly connected with movable vane rotor lower cone, and described movable vane rotor lower cone upside is fixedly connected with the movable vane rotor.
The upper surface perforate of described separator outlet plate is provided with a plurality of separator outlet pipes.
The mill milling device bearing at gear two ends of described time powder is provided be used to preventing the bleed sealing device of bearing of coal dust.
Compare with existing static sorting and dynamic sorting unit, outstanding feature of the present invention is:
Under the inner cone of separator bottom return powder mill inner barrel with return powder and mill and all intermeshing taper wear-resistant gears are set in the formed annular housing of outer cylinder body, to return powder and be milled into qualified coal dust, increase milling of coal pulverizer and exert oneself, thereby improved pulverizer capacity.
2. return powder through after mill in grades, the pulverized coal fineness index increases substantially, and is conducive to reduce fly ash combustible material.
Under the inner cone of separator bottom return powder mill inner barrel with return powder and mill and all intermeshing taper wear-resistant gears are set in the formed annular housing of outer cylinder body, can prevent that heat primary air from entering in the inner cone of separator bottom, part is sorted the powder that returns that gets off again blows afloat, affect fineness of pulverized coal and pulverized coal fineness index.
The utility model adopts the dynamic high-efficiency sorting unit, be mainly used in the medium-speed pulverizer pulverized coal preparation system, change according to entering stove ature of coal and boiler load, online pulverizer capacity and the fineness of pulverized coal adjusted, satisfy the requirement of boiler Optimizing Combustion to fineness of pulverized coal and pulverizer capacity under different operating modes, reduce primary air flow and nitrogen oxide emission.
The beneficial effects of the utility model are to adopt wind powder Dual-Phrase Distribution of Gas olid multipass sort, return the powder mill in grades, to increase substantially the sorting unit efficiency of separation, and then improve pulverized coal preparation system and exert oneself, reduce unit power consumption of coal pulverizing, simultaneously, enlarged the fineness of pulverized coal adjustable range, increase substantially the pulverized coal fineness index, improved the adaptive capacity of power boiler burning to ature of coal.The present invention also can be applicable to the material sorting device of the industries such as cement, metallurgy, petrochemical industry.
Description of drawings
Fig. 1 is the utility model structural representation,
Fig. 2 is A-A profile in Fig. 1.
in figure: 1-return the powder inner barrel of milling, 2-coal pulverizer discharge case, 3-separator inlet flange bolt: 4-separator inlet flange, 5-separator bottom conoidal Shell, 6-separator bottom inner cone, 7-Membrane Separator Cylinder for CFB Boiler, 8-movable vane rotor lower cone, 9-stator blade, 10-Membrane Separator Cylinder for CFB Boiler upper plate, 11-hollow shaft, 12-separator outlet plate, 13-slewing supporting device, 14-separator outlet pipe, 15-hollow shaft upper sealing device, 16-coal spout, 17-coal spout flange, 18-coal spout bolt, 19-separator variable-frequency motor, 20-shaft coupling, 21-reduction box driving gear, 22-bearing, 23-separator top cone, 24-movable vane rotor, 25-hollow shaft lower sealing device, 26-return the powder propeller shaft sleeve of milling, 27-shaft joint and reduction box, 28-return the powder variable-frequency motor of milling, 29-return the powder gear of milling, 30-return the powder outer cylinder body of milling, 31-return the powder gear-bearing of milling, 32-return the powder gear shaft of milling, 33-internal bearing sleeve.
The specific embodiment
below in conjunction with accompanying drawing, the present invention is advanced-goes on foot explanation: as shown in Figure 1, described medium-speed pulverizer returns the powder mill in grades, the dynamic high-efficiency sorting unit, comprise coal spout 16, separator, described separator comprises separator bottom cone, Membrane Separator Cylinder for CFB Boiler 7, separator top cone 23, separator outlet pipe 14, the sorting drive unit, described separator bottom cone comprises separator bottom conoidal Shell 5 and separator bottom inner cone 6, conoidal Shell 5 lower ends, described separator bottom are fixedly connected with coal pulverizer discharge case 2 by separator inlet flange 4, inner cone 6 lower ends, described separator bottom are close to back the powder outer cylinder body 30 of milling, be positioned at described go back to powder mill outer cylinder body 30 inside, fix back the powder inner barrel 1 of milling around coal spout 16, at mill outer cylinder body 30 and return powder and mill and be provided with all intermeshing tapers between inner barrel 1 and return the powder gear 29 of milling of described time powder, described taper return powder mill gear 29 return powder mill gear shaft 32 in, the outer end is fixedly connected with respectively internal bearing sleeve 33 and returns the powder propeller shaft sleeve 26 of milling, described internal bearing sleeve 33 with return the powder inner barrel 1 of milling and be sealedly and fixedly connected, return powder mill propeller shaft sleeve 26 and coal pulverizer discharge case 2, returning the powder outer cylinder body 30 of milling is sealedly and fixedly connected, the powder that returns of one of them gear 29 of milling is milled gear shaft 32 through fixing with the mill output shaft of variable-frequency motor 28 of reduction box shaft coupling 27 and time powder coal pulverizer discharge case 2 outside, return powder and mill by this time powder powder 29 pairs of gears of milling that return that variable-frequency motor 28 drives complete cycles of milling, coal dust after milling falls the coal pulverizer that the rear section enters the below, part is promoted to enter to carry out sorting again in coal pulverizer discharge case 2 by pressure fan.
Described separator top cone 23 is tightly connected by Membrane Separator Cylinder for CFB Boiler upper plate 10 with Membrane Separator Cylinder for CFB Boiler 7, is provided with in the upper end of described separator top cone 23 the separator outlet plate 12 that is attached thereto one.Usually, separator outlet plate 12 is horizontally disposed with, and is fixed with outlet 14 and sorting drive unit on it.
Be provided with all stator blades 9 in described Membrane Separator Cylinder for CFB Boiler 7, described stator blade 9 upper ends and Membrane Separator Cylinder for CFB Boiler upper plate 10 is fixing, and the upper end of lower end and separator bottom inner cone 6 is fixed.Coal dust after being milled by coal pulverizer carries from the toroidal cavity between separator bottom conoidal Shell 5 and separator bottom inner cone 6 through wind and enters, and enters centrifugal classification through stator blade 9.
Be provided with a tubular hollow shaft 11 outside coal spout 16, described hollow shaft 11 is connected with slewing supporting device 13, and hollow shaft 11 upper ends are on separator outlet plate 12 and by revolution Support Gear driven rotary.Described sorting drive unit comprises separator variable-frequency motor 19 and the reduction box that is connected by shaft coupling 20 with the output shaft of separator variable-frequency motor 19, the reduction box driving gear 21 of described reduction box output and described revolution Support Gear engagement; The lower end of described hollow shaft 11 is positioned at Membrane Separator Cylinder for CFB Boiler 7 or separator bottom cone.
The upper end of described hollow shaft 11 is provided with the hollow shaft upper sealing device 15 that is fixedly connected with coal spout 16, and the lower end of described hollow shaft 11 is provided with the hollow shaft lower sealing device 25 that is fixedly connected with coal spout 16.Be tightly connected between hollow shaft upper sealing device 15 and hollow shaft lower sealing device 25 and hollow shaft, but do not fix with hollow shaft.When therefore hollow shaft was rotated, hollow shaft upper sealing device 15 and hollow shaft lower sealing device 25 did not rotate.
Be the schematic top plan view of stator blade 9 and movable vane rotor 24 as shown in Figure 2, described hollow shaft 11 lower outsides are fixed all movable vane rotor lower cones 8, and described movable vane rotor lower cone 8 upsides are fixed all movable vane rotors 24.
Described hollow shaft 11 lower outsides are fixedly connected with movable vane rotor lower cone 8, and described movable vane rotor lower cone 8 upsides are fixedly connected with movable vane rotor 24.
By above structure as can be known, when the variable-frequency motor of sorting drive unit starts, drive the hollow shaft rotation, drive simultaneously the movable vane rotor, wind powder mixture is carried out centrifugal classification.
The upper surface perforate of described separator outlet plate 12 is provided with a plurality of separator outlet pipes 14.Be typically provided with four or six outlets.
The mill milling device bearing 31 at gear 29 two ends of described time powder is provided be used to preventing the bleed sealing device of bearing of coal dust.
assorting room is as follows: raw coal enters coal spout 16 by coal spout 16 tops, by coal spout by being milled by coal pulverizer, afterwards, coal dust after heat primary air carries and mills is through coal pulverizer discharge case 2, enter the annular housing of separator bottom conoidal Shell 5 and separator bottom inner cone 6 formation, wind powder mixture changes direction through Membrane Separator Cylinder for CFB Boiler 7, enter movable vane rotor 24 by stator blade 9 guiding, through the movable vane rotor, produce centrifugal classification, qualified coal dust takes separator top cone 23 to through movable vane rotor 24, and be sent from separator outlet pipe 14, defective pulverized coal particle is in separator bottom inner cone 6, be slipped on the toothed disc of milling, to return powder and be milled into the qualified coal dust of fineness by returning mill the gear of milling that variable-frequency motor 28 drives rotation of powder, and flow out from going back to powder mill outer cylinder body 30 bottoms, entrainment through a wind, be brought in the wind powder mixture that carries out sorting, enter sorting again.This device increases substantially exerts oneself, and the decrease fineness of pulverized coal guarantees that pulverizer capacity is stable.Be mainly used in the medium-speed pulverizer pulverized coal preparation system, change according to entering stove ature of coal and boiler load, online pulverizer capacity and the fineness of pulverized coal adjusted satisfies the requirement of boiler Optimizing Combustion to fineness of pulverized coal and pulverizer capacity under different operating modes, reduces primary air flow and nitrogen oxide emission.
Claims (8)
1.-kind of medium-speed pulverizer returns powder mill in grades, dynamic high-efficiency sorting unit, comprise coal spout (16), separator, described separator comprises separator bottom cone, Membrane Separator Cylinder for CFB Boiler (7), separator top cone (23), separator outlet pipe (14), sorting drive unit, described separator bottom cone comprises separator bottom conoidal Shell (5) and separator bottom inner cone (6), described separator bottom conoidal Shell (5) lower end is fixedly connected with coal pulverizer discharge case (2), it is characterized in that:
Described separator bottom inner cone (6) lower end connects back the powder outer cylinder body (30) of milling, described time powder mill outer cylinder body (30) inner, be fixed with back the powder inner barrel (1) of milling with coal spout (16), mill and be provided with all intermeshing tapers between inner barrel (1) and return the powder gear (29) of milling at mill outer cylinder body (30) and time powder of described time powder; Described taper is returned mill the mill inside and outside end of gear shaft (32) of powder that returns of gear (29) of powder and is fixedly connected with respectively internal bearing sleeve (33) and time powder propeller shaft sleeve (26) of milling; Described internal bearing sleeve (33) with return the powder inner barrel (1) of milling and be connected, returning powder the mill outer cylinder body (30), coal pulverizer discharge case (2) of propeller shaft sleeve (26) and time powder of milling is connected, one of them gear of milling (29) return powder mill gear shaft (32) through band reduction box shaft coupling (27) with return the mill output shaft of variable-frequency motor (28) of powder and fix, milled to returning powder by this time powder powder gear (29) of milling that returns that variable-frequency motor (28) drives complete cycle of milling, the coal dust after milling enters the sorting circulation again.
2. medium-speed pulverizer according to claim 1 returns powder mill in grades, dynamic high-efficiency sorting unit, it is characterized in that: described separator top cone (23) is tightly connected by Membrane Separator Cylinder for CFB Boiler upper plate (10) with Membrane Separator Cylinder for CFB Boiler (7), is provided with the separator outlet plate (12) that is attached thereto one in the upper end of described separator top cone (23).
3. medium-speed pulverizer according to claim 2 returns powder mill in grades, dynamic high-efficiency sorting unit, it is characterized in that: be provided with all stator blades (9) in described Membrane Separator Cylinder for CFB Boiler (7), described stator blade (9) upper end and Membrane Separator Cylinder for CFB Boiler upper plate (10) are fixing, and the upper end of lower end and separator bottom inner cone (6) is fixed.
4. medium-speed pulverizer according to claim 2 returns the powder mill in grades, the dynamic high-efficiency sorting unit, it is characterized in that: be provided with a tubular hollow shaft (11) outside coal spout (16), hollow shaft (11) upper end is on separator outlet plate (12) and be provided with the hollow shaft upper sealing device (15) that is fixedly connected with coal spout (16), hollow shaft (11) is connected with slewing supporting device (13) on separator outlet plate (12), the lower end of hollow shaft (11) is positioned at Membrane Separator Cylinder for CFB Boiler (7) or separator bottom cone and is provided with the hollow shaft lower sealing device (25) that is fixedly connected with coal spout (16).
5. medium-speed pulverizer according to claim 4 returns powder mill in grades, dynamic high-efficiency sorting unit, it is characterized in that: described sorting drive unit comprises separator variable-frequency motor (19) and the reduction box that is connected by shaft coupling (20) with the output shaft of separator variable-frequency motor (19), revolution Support Gear engagement in the reduction box driving gear (21) of described reduction box output and described slewing supporting device (13), and drive hollow shaft (11) rotation.
6. medium-speed pulverizer according to claim 4 returns powder mill in grades, dynamic high-efficiency sorting unit, it is characterized in that: described hollow shaft (11) lower outside is fixedly connected with movable vane rotor lower cone (8), and described movable vane rotor lower cone (8) upside is fixedly connected with movable vane rotor (24).
7. according to claim 2 or 4 described medium-speed pulverizers return powder mill in grades, dynamic high-efficiency sorting unit, it is characterized in that: the upper surface perforate of described separator outlet plate (12) is provided with a plurality of separator outlet pipes (14).
8. medium-speed pulverizer according to claim 1 returns powder mill in grades, dynamic high-efficiency sorting unit, it is characterized in that: the mill milling device bearing (31) at gear (29) two ends of described time powder is provided be used to preventing the bleed sealing device of bearing of coal dust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220653414 CN202962872U (en) | 2012-11-30 | 2012-11-30 | Device for milling and dynamically sorting recovered powder by means of classification at high efficiency for intermediate-speed coal mill |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220653414 CN202962872U (en) | 2012-11-30 | 2012-11-30 | Device for milling and dynamically sorting recovered powder by means of classification at high efficiency for intermediate-speed coal mill |
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| CN202962872U true CN202962872U (en) | 2013-06-05 |
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| CN 201220653414 Expired - Lifetime CN202962872U (en) | 2012-11-30 | 2012-11-30 | Device for milling and dynamically sorting recovered powder by means of classification at high efficiency for intermediate-speed coal mill |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104368433A (en) * | 2014-11-11 | 2015-02-25 | 江苏中能电力设备有限公司 | Integrated separator applied to fixed vane and movable vane of intermediate-speed coal mill |
| CN104759412A (en) * | 2015-04-21 | 2015-07-08 | 黑龙江迪科电站技术有限公司 | Adjustable dynamic rotary separator for coal mill |
| CN107470009A (en) * | 2017-09-11 | 2017-12-15 | 西安西热锅炉环保工程有限公司 | The frequency conversion rotation coal dust depth separation equipartition device and method of a kind of medium-speed pulverizer |
| 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 |
| CN112264152A (en) * | 2020-11-10 | 2021-01-26 | 湖南嘉力亚新材料有限公司 | Prebaked anode manufacturing powder grinding device with quick discharging function |
| CN113294800A (en) * | 2021-06-28 | 2021-08-24 | 西安热工研究院有限公司 | System for improving coal pulverizer static separator outlet pulverized coal distribution uniformity |
| CN114392922A (en) * | 2022-02-28 | 2022-04-26 | 北京电力设备总厂有限公司 | Novel belt-driven pulverized coal separator and using method thereof |
| CN114749265A (en) * | 2022-04-15 | 2022-07-15 | 西安翰源节能环保科技有限公司 | Return powder secondary separation device and medium-speed coal mill |
| CN114985092A (en) * | 2022-05-30 | 2022-09-02 | 安徽玉龙电力科技有限公司 | Be applied to drainage structure on coal pulverizer |
-
2012
- 2012-11-30 CN CN 201220653414 patent/CN202962872U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104368433A (en) * | 2014-11-11 | 2015-02-25 | 江苏中能电力设备有限公司 | Integrated separator applied to fixed vane and movable vane of intermediate-speed coal mill |
| CN104759412A (en) * | 2015-04-21 | 2015-07-08 | 黑龙江迪科电站技术有限公司 | Adjustable dynamic rotary separator for coal mill |
| CN107470009A (en) * | 2017-09-11 | 2017-12-15 | 西安西热锅炉环保工程有限公司 | The frequency conversion rotation coal dust depth separation equipartition device and method of a kind of medium-speed pulverizer |
| 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 |
| CN112264152A (en) * | 2020-11-10 | 2021-01-26 | 湖南嘉力亚新材料有限公司 | Prebaked anode manufacturing powder grinding device with quick discharging function |
| CN113294800A (en) * | 2021-06-28 | 2021-08-24 | 西安热工研究院有限公司 | System for improving coal pulverizer static separator outlet pulverized coal distribution uniformity |
| CN114392922A (en) * | 2022-02-28 | 2022-04-26 | 北京电力设备总厂有限公司 | Novel belt-driven pulverized coal separator and using method thereof |
| CN114392922B (en) * | 2022-02-28 | 2024-03-01 | 北京电力设备总厂有限公司 | Novel belt-driven pulverized coal separator and application method thereof |
| CN114749265A (en) * | 2022-04-15 | 2022-07-15 | 西安翰源节能环保科技有限公司 | Return powder secondary separation device and medium-speed coal mill |
| CN114985092A (en) * | 2022-05-30 | 2022-09-02 | 安徽玉龙电力科技有限公司 | Be applied to drainage structure on coal pulverizer |
| CN114985092B (en) * | 2022-05-30 | 2023-08-18 | 安徽玉龙电力科技有限公司 | Be applied to drainage structure on coal pulverizer |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Xi'an Forrest electric power technology LLC Assignor: Huang Lina Contract record no.: 2014610000129 Denomination of utility model: Device for milling and dynamically sorting recovered powder by means of classification at high efficiency for intermediate-speed coal mill Granted publication date: 20130605 License type: Exclusive License Record date: 20140902 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
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Granted publication date: 20130605 |
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