CN2410042Y - Axial direction coarse grain separator - Google Patents
Axial direction coarse grain separator Download PDFInfo
- Publication number
- CN2410042Y CN2410042Y CN 00213118 CN00213118U CN2410042Y CN 2410042 Y CN2410042 Y CN 2410042Y CN 00213118 CN00213118 CN 00213118 CN 00213118 U CN00213118 U CN 00213118U CN 2410042 Y CN2410042 Y CN 2410042Y
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- China
- Prior art keywords
- powder
- outer taper
- axial
- mill separator
- inlet tube
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Abstract
The utility model relates to an axial coarse powder separator which comprises an inner cone and an outer cone, wherein baffle plates with adjustable degree of opening are uniformly distributed on the upper part of a channel between the inner cone and the outer cone along the circumference, the lower end of the outer cone is provided with a powder returning pipe and an inlet pipe, and the upper end of the outer cone is provided with an outlet pipe and an explosion-proof door. The end part of an outlet of the inlet pipe is provided with a rotational flow diffusion flow equalizer which is composed of a bell mouth diffusion pipe and axial flow guide vanes. Because of the action of the rotational flow diffusion flow equalizer, the uniformity of air flow distribution in the coarse powder separator is improved, the abrasion of the coarse powder separator is lightened and the quality and the efficiency of separation are increased.
Description
The utility model relates to a kind of separator of separating granular material, particularly the axial mill separator that adopts in the coal dust preparation system of thermal power plant.
Mill separator is one of key equipment of thermal power plant coal dust preparation system, and its effect is that the coal dust that coal pulverizer grinds is separated by granularity.At present, generally use axial mill separator in the coal dust preparation system of thermal power plant, the inlet tube of this axial mill separator is a straight tube, wind powder mixed airflow leaves inlet tube and directly clashes into the inner cone bottom, cause inner cone bottom serious wear, cause regional gas stream VELOCITY DISTRIBUTION inequality and pulverized coal particle CONCENTRATION DISTRIBUTION and particle size distribution inequality between the interior Outer Taper simultaneously, disintegrate-quality (particle size uniformity) and separative efficiency have been reduced, make back in the powder qualified coal dust too much, reduce powder process and exerted oneself, increased the powder process power consumption.
August in 1997 Decree of Patent Office of China on the 13rd the utility model patent (patent No.: ZL96235868.1) disclose a kind of series connection twin shaft to mill separator, former axial mill separator structure is improved, connected the one-level adjustable shaft to skimming baffle in former axial mill separator inner cone bottom, this series connection twin shaft has improved the operation conditions of former axial mill separator to a certain extent to mill separator, improved the uniformity of coal dust, but the problem of regional gas stream VELOCITY DISTRIBUTION inequality and pulverized coal particle CONCENTRATION DISTRIBUTION and particle size distribution inequality between the Outer Taper in failing fundamentally to solve.
The purpose of this utility model is a kind of axial mill separator of invention, it can alleviate the wearing and tearing of former axial mill separator structure member, improve the air-flow operating mode in the former axial mill separator, improve the separative efficiency of axial mill separator, reduce back the qualified powder content in the powder.
The utility model is achieved in that a kind of axial mill separator, comprise inner cone, Outer Taper, inner cone relies on and is fixed on the Outer Taper along the equally distributed gripper shoe of circumference, has the passage that wind powder mixture is flowed between inner cone and the Outer Taper, the passage top baffle plate that aperture can be regulated that is being uniformly distributed along the circumference, the Outer Taper lower end is provided with powder retrieving pipe and inlet tube, and the Outer Taper upper end is provided with outlet and explosion proof door, is characterized in: at the inlet tube outlet end eddy flow diffusion current equalizer is housed.
Axially the eddy flow diffusion current equalizer of mill separator inlet tube outlet end is made up of horn mouth diffuser pipe and axial diversion blade, ratio L/D＞0.2 of the length L of horn mouth diffuser pipe and inlet tube diameter D, and the axial diversion blade is made by high-abrasive material.
Axially in the mill separator inlet tube outlet straight tube diversion rib plate is housed.
The Outer Taper tapering part inwall circumference of axial mill separator is equipped with back powder leads the powder plate, and the top rade α that leads the powder plate should be greater than 40 degree.
The utility model has been installed eddy flow diffusion current equalizer at axial mill separator inlet tube outlet end, make exit flow become a kind of speed and CONCENTRATION DISTRIBUTION spreads air-flow uniformly, the breeze airflow of avoiding high speed to concentrate directly washes away the supporting construction between inner cone bottom and the interior Outer Taper, alleviates wearing and tearing; The air-flow of this even diffusion simultaneously can also produce uniform reverse impact to the powder that returns that falls along zone between the interior Outer Taper, further separates back the qualified powder in the powder, reduces back the qualified powder content in the powder; Also will improve the flow distribution evenness in deflector baffle zone, top simultaneously, improve disintegrate-quality and efficient.
The diversion rib plate that is installed in the axial mill separator inlet tube outlet straight tube can make the breeze airflow generation prewhirl, and further improves the cyclonic action of eddy flow diffusion current equalizer.
The powder that returns that is installed on the Outer Taper inwall circumference is led the flow direction that the powder plate can change back powder, will return powder and import the rising primary air, strengthens primary air to returning the secondary separation of qualified powder in the powder, reduces back the content of qualified powder in the powder, further improves separative efficiency.
Below in conjunction with accompanying drawing the novel embodiment of this use is described in further detail.
Accompanying drawing 1 is the utility model schematic diagram, wherein:
1-inner cone, 2-Outer Taper 3-be folded to controllable register
4-powder retrieving pipe, 5-inlet tube, 6-outlet
7-explosion proof door, 8-horn mouth diffuser pipe, 9-axial diversion blade, 10-diversion rib plate 11-return powder to lead the powder plate
Axially the wind powder mixed airflow in the mill separator inlet tube (5) is through diversion rib plate (10) and the eddy flow diffusion current equalizer rectified diffusion be made up of horn mouth diffuser pipe (8) and axial diversion blade (9), formation speed and CONCENTRATION DISTRIBUTION spread air-flow uniformly, avoided the direct impact of breeze airflow, alleviated wearing and tearing inner cone (1).Evenly the air-flow of diffusion rises along the passage between inner cone (1) and the Outer Taper (2), being folded to controllable register (3) separates, the meal of separating falls along the Outer Taper inwall, the powder that returns that is installed in Outer Taper inwall circumference and horizontal plane angle α=62 degree is led secondary separation in powder plate (11) the importing rising primary air, further reduce the qualified powder content in time powder, improved disintegrate-quality and efficient.
Claims (4)
1. axial mill separator, comprise inner cone, Outer Taper, inner cone relies on and is fixed on the Outer Taper along the equally distributed gripper shoe of circumference, the passage top baffle plate that aperture can be regulated that is being uniformly distributed along the circumference between inner cone and the Outer Taper, the Outer Taper lower end is provided with powder retrieving pipe and inlet tube, the Outer Taper upper end is provided with outlet and explosion proof door, it is characterized in that: at the inlet tube outlet end eddy flow diffusion current equalizer is housed.
2. according to the described axial mill separator of claim 1, it is characterized in that: described eddy flow diffusion current equalizer is made up of horn mouth diffuser pipe and axial diversion blade, ratio L/D＞0.2 of the length L of horn mouth diffuser pipe and inlet tube diameter D, the axial diversion blade is made by high-abrasive material.
3. according to the described axial mill separator of claim 2, it is characterized in that: in described inlet tube outlet straight tube, diversion rib plate is housed.
4. according to the described axial mill separator of claim 3, it is characterized in that: at described Outer Taper tapering part inwall circumference powder is housed back and leads the powder plate, the top rade α that leads the powder plate should be greater than 40 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00213118 CN2410042Y (en) | 2000-01-11 | 2000-01-11 | Axial direction coarse grain separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00213118 CN2410042Y (en) | 2000-01-11 | 2000-01-11 | Axial direction coarse grain separator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2410042Y true CN2410042Y (en) | 2000-12-13 |
Family
ID=33579474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00213118 Expired - Fee Related CN2410042Y (en) | 2000-01-11 | 2000-01-11 | Axial direction coarse grain separator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2410042Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103128011A (en) * | 2011-11-23 | 2013-06-05 | 煤炭科学研究总院唐山研究院 | Large cone angle dense medium cyclone |
| CN103608127A (en) * | 2010-07-16 | 2014-02-26 | 萨维工程有限公司 | Pulverizer classifier |
| CN105195341A (en) * | 2015-06-09 | 2015-12-30 | 中国大唐集团科学技术研究院有限公司 | Double-in and double-out steel ball coal mill shaft diameter combined separator |
| CN105521877A (en) * | 2014-10-23 | 2016-04-27 | 上海意丰机电科技开发有限公司 | Adjustable cyclone separator |
| CN106881204A (en) * | 2017-02-27 | 2017-06-23 | 中国华电集团科学技术研究总院有限公司 | Multistage cyclone mill separator |
| CN108758680A (en) * | 2018-06-01 | 2018-11-06 | 中国神华能源股份有限公司 | Coal even separator and coal pulverizer |
| CN111530645A (en) * | 2020-04-29 | 2020-08-14 | 华电电力科学研究院有限公司 | Stable vortex type multistage cyclone coarse powder separator and working method thereof |
| CN111617890A (en) * | 2020-04-29 | 2020-09-04 | 华电电力科学研究院有限公司 | Coarse powder separator for separating and returning powder and working method thereof |
| CN112138848A (en) * | 2020-09-16 | 2020-12-29 | 华润电力湖北有限公司 | Axial separator of coal mill |
-
2000
- 2000-01-11 CN CN 00213118 patent/CN2410042Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103608127A (en) * | 2010-07-16 | 2014-02-26 | 萨维工程有限公司 | Pulverizer classifier |
| CN103128011A (en) * | 2011-11-23 | 2013-06-05 | 煤炭科学研究总院唐山研究院 | Large cone angle dense medium cyclone |
| CN103128011B (en) * | 2011-11-23 | 2015-08-12 | 中煤科工集团唐山研究院有限公司 | Large cone angle heavy medium cyclone |
| CN105521877A (en) * | 2014-10-23 | 2016-04-27 | 上海意丰机电科技开发有限公司 | Adjustable cyclone separator |
| CN105195341A (en) * | 2015-06-09 | 2015-12-30 | 中国大唐集团科学技术研究院有限公司 | Double-in and double-out steel ball coal mill shaft diameter combined separator |
| CN106881204A (en) * | 2017-02-27 | 2017-06-23 | 中国华电集团科学技术研究总院有限公司 | Multistage cyclone mill separator |
| CN108758680A (en) * | 2018-06-01 | 2018-11-06 | 中国神华能源股份有限公司 | Coal even separator and coal pulverizer |
| CN108758680B (en) * | 2018-06-01 | 2019-10-15 | 中国神华能源股份有限公司 | Coal even separator and coal pulverizer |
| CN111530645A (en) * | 2020-04-29 | 2020-08-14 | 华电电力科学研究院有限公司 | Stable vortex type multistage cyclone coarse powder separator and working method thereof |
| CN111617890A (en) * | 2020-04-29 | 2020-09-04 | 华电电力科学研究院有限公司 | Coarse powder separator for separating and returning powder and working method thereof |
| CN112138848A (en) * | 2020-09-16 | 2020-12-29 | 华润电力湖北有限公司 | Axial separator of coal 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 |