CN101648652B - Sundries separator for positive pressure coal dust preparation system - Google Patents
Sundries separator for positive pressure coal dust preparation system Download PDFInfo
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- CN101648652B CN101648652B CN2009103071794A CN200910307179A CN101648652B CN 101648652 B CN101648652 B CN 101648652B CN 2009103071794 A CN2009103071794 A CN 2009103071794A CN 200910307179 A CN200910307179 A CN 200910307179A CN 101648652 B CN101648652 B CN 101648652B
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- coal dust
- grid
- separator
- positive pressure
- preparation system
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- 239000002817 coal dust Substances 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 26
- 238000003780 insertion Methods 0.000 claims description 11
- 230000037431 insertion Effects 0.000 claims description 11
- 238000000926 separation method Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 28
- 238000004140 cleaning Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000843 powder Substances 0.000 abstract description 4
- 238000009826 distribution Methods 0.000 abstract description 3
- 239000002245 particle Substances 0.000 abstract description 2
- 230000004888 barrier function Effects 0.000 abstract 1
- 239000000428 dust Substances 0.000 abstract 1
- 230000005611 electricity Effects 0.000 abstract 1
- 239000003245 coal Substances 0.000 description 20
- 239000004744 fabric Substances 0.000 description 3
- 239000005060 rubber Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- -1 stalk Substances 0.000 description 1
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- Combined Means For Separation Of Solids (AREA)
Abstract
The invention discloses a sundries separator for a positive pressure coal dust preparation system, comprising an air current baffle and a rotary type separating grille arranged in an air current main pipe as well as an upward-inserted slab door and a downward-inserted slab door arranged in a bypass wind channel. A capture grille and a barrier grille are arranged between the two slab doors, and a material taking door is arranged between the two grilles. The invention can effectively separate sundries in coal dust air current and take out the sundries in a sealed state to prevent leakage of coal dust, thereby not causing pollution to the environment, eliminating block of sundries to the separator, ensuring the safe operation of the dust preparing system, avoiding the operation of manually cleaning a tailing separator, improving the separating effect of a coarse powder separator, improving the particle size distribution characteristic of coal dust to obtain fine coal dust and simultaneously improving the air current work condition in the coarse powder separator, reducing the flowing resistance and electricity consumption in preparing coal dust.
Description
Technical field
The invention belongs to the disengagement gear of foreign material in a kind of separation Dual-Phrase Distribution of Gas olid (like wooden unit, stalk, chemical & blended fabric, rubber etc.), relate in particular to a kind of sundries separator for positive pressure coal dust preparation system that is applicable to the thermal electric generation station-service.
Background technology
Coal dust preparation system is its important key link in the production process of thermal powerplant; In order to guarantee the high efficiency of boiler combustion; Must coal be ground thinner powdery, the coal dust that coal mill grinds gets into mill separator to be separated, before getting into mill separator; Should install sundries separator additional, go out separating substances such as the wooden unit in the coal dust, stalk, chemical & blended fabric, rubber.These materials are directly brought in the mill separator by wind because density is little, volume is bigger, in coal mill, can not grind.In real-world operation; Foreign material such as the stalk that is mixed with in the raw coal, cloth, rubber, iron wire, woven bag are being wrapped on the baffle blades when arranging closely the mill separator deflector baffle; And above-mentioned foreign material also often are blocked on the powder retrieving pipe flapper of mill separator; Cause mill separator separating effect variation even lose separating capacity, reduced exerting oneself of coal mill, influence unit load.In order to clear up these foreign material, can only stop coal mill in turn, increase maintenance, operations staff's work capacity, influence the safety and economic operation of unit.
Existing disconnector all is the negative pressure system operation, and new in recent years equipment majority of going into operation is a positive pressure system.Original sundries separator can not effectively seal in positive pressure system, can't carry out the cleaning of foreign material, at present equal no-sundries disconnector in the low speed coal mill positive pressure coal dust preparation system of having gone into operation.In view of present this situation, develop the sundries separator that is applicable to positive pressure coal dust preparation system, be the important means that guarantees thermal electric generation unit safety and economic operation.
Summary of the invention
The object of the invention provides a kind of sundries separator for positive pressure coal dust preparation system exactly for addressing the above problem, and it can be used in the positive pressure coal dust preparation system, effectively isolates the foreign material in the breeze airflow; And can under the leak free state, foreign material be taken out, prevent the leakage of coal dust, can not cause pollution to environment; Eliminate the obstruction of foreign material simultaneously, guarantee the safe operation of pulverized coal preparation system, avoided the work of labor cleaning's mill separator disconnector; Improve the separating effect of mill separator, improve the particle size distribution characteristics of coal dust, obtain very thin coal dust; Improve the air-flow operating mode in the mill separator simultaneously, reduce resistance to flow, reduce the powder process power consumption.
For realizing above-mentioned purpose, technical scheme of the present invention is:
A kind of sundries separator for positive pressure coal dust preparation system, it comprises blast fence that is arranged on the air-flow trunk line and the rotary grid that separates that is arranged on the air-flow trunk line; Also comprise the last insertion plate door that is arranged on the bypass air channel simultaneously and be arranged on bypass air channel lower plugboard door, between said two insertion plate doors, be provided with and catch grid and stop grid, at said seizure grid with stop between the grid it is to get bin gate.
Said separation grid and blast fence are fixed as one, and angle between the two is 60 °-120 °; Separating grid and blast fence is connected on the air-flow trunk line through S. A..
Said S. A. adopts the positive pressure gas sealing.
Said seizure grid is fixed in the bypass air channel.
The said grid that stops adopts sliding type or convertible.
Sundries separator for positive pressure coal dust preparation system among the present invention comprises air-flow trunk line, rotatable separation grid and blast fence, seizure grid, stops grid, insertion plate door, bypass air channel and S. A. etc. up and down.Breeze airflow is separated grid by foreign material through the air-flow trunk line time catches, and separates the rotation of grid and blast fence, makes air-flow get into the bypass air channel; Foreign material are caught by the seizure grid in the bypass air channel; Catch grid and stop that grid is limited to foreign material in the bypass air channel, separate grid and blast fence and get back to original position, insertion plate door is closed up and down; Form airtight storehouse, can take out foreign material from getting bin gate.
The invention has the beneficial effects as follows: 1, can lean on the current rate of breeze airflow self, realize the separation of foreign material, simple in structure, easy to operate; 2, can be used for the malleation pulverized coal preparation system and remove the foreign material in the coal dust, solve the problem that present positive pressure coal dust preparation system can't separate foreign material; 3, needn't stop transport pulverized coal preparation system and cleaning mill separator are raised labour efficiency, and reduce labour intensity; 4, do not have the coal dust deposition in the operational process, reduce the possibility of spontaneous combustion of pulverized coal, blast.
Description of drawings
Accompanying drawing 1 is an integral structure scheme drawing of the present invention;
Accompanying drawing 2 is to separate grid and blast fence structural representation;
Accompanying drawing 3 is that sliding type stops the cell sructure scheme drawing;
Accompanying drawing 4 is the convertible cell sructure scheme drawings that stop;
Accompanying drawing 5 is the present invention's work scheme drawings in positive pressure coal dust preparation system.
Wherein, 1, the air-flow trunk line, 2, blast fence, 3, go up insertion plate door, 4, catch grid; 5, get bin gate, 6, stop grid, 7, the lower plugboard door, 8, S. A.; 9, separate grid, 10, the bypass air channel, 11, mill separator, 12, sundries separator for positive pressure coal dust preparation system; 13, airduct road, 14, dry raw coal delivery duct, 15, coal mill, 16, coal mill supports.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
As shown in Figure 1, last insertion plate door 3 is closed with lower plugboard door 7, stops that grid 6 closes, and breeze airflow is through air-flow trunk line 1, and the separated grid 9 of foreign material in this moment breeze airflow is caught, and foreign material are attached to by the effect of breeze airflow strength to separate grid 9 belows.When cleaning during foreign material, open last insertion plate door 3 with lower plugboard door 7, stop that grid 6 opens, the air channel 10 of bypass is at this moment blocked by blast fence 2, and a small amount of coal dust air communication mistake can only be arranged; Clickwise separates grid 9 and blast fence 2, makes separation grid 9 reach 10 end opening places, bypass air channel, and this moment, blast fence 2 just in time closed air-flow trunk line 1; Breeze airflow changes by-passing air channel 10, and foreign material are blown to by the breeze airflow strength and catch grid 4, and foreign material are attached to by the effect of breeze airflow strength and catch grid 4 belows, and the coal dust of deposition is by carried away by air movement in the air channel of bypass simultaneously 10; Stop that grid 6 closes, stop grid 6 and catch grid 4 and be limited in foreign material in the bypass air channel 10; Left-hand revolution separates grid 9 and blast fence 2, makes them be returned to original position, and this moment, bypass air channel 10 interior breeze airflow through-current capacities were very little, and breeze airflow changes walks air-flow trunk line 1; Insertion plate door 3 and lower plugboard door 7 are closed in the pass; Bypass air channel 10 is fully closed; Form a fully enclosed space between last insertion plate door 3 and the lower plugboard door 7, catch grid 4, stop that grid 6 and foreign material are closed in this space, the foreign material gravitate of catching grid 4 belows drops on and stops on the grid 6; Open and get bin gate 5, take out foreign material; Close and get bin gate 5.
Wherein as shown in Figure 2, separate the rotation that is fixed together of grid 9 and blast fence 2, separate grid 9 and blast fence 2 and be connected on the air-flow trunk line 1 through S. A. 8.The operation that stops grid 6 can be a sliding type or convertible.Wherein sliding type stops that grid 6 is as shown in Figure 3; Convertiblely stop that grid 6 is as shown in Figure 4.The foreign material separation function of the present invention in positive pressure coal dust preparation system is to realize like this.In positive pressure coal dust preparation system, the present invention is installed on the air-flow trunk line 1 between mill separator 11 and the coal mill 15, and coal mill 15 bottoms are that coal mill supports 16.Dry raw coal is transported in the coal mill 15 through dry raw coal delivery duct 14 and grinds; Coal dust after grinding is moving by a wind of coming through airduct road 13, forms breeze airflow; Breeze airflow is through air-flow trunk line 1, and through sundries separator for positive pressure coal dust preparation system 12, the foreign material in the coal dust are separated by sundries separator for positive pressure coal dust preparation system 12 earlier, and breeze airflow continues to be transported to mill separator 11 along air-flow trunk line 1.
Claims (5)
1. a sundries separator for positive pressure coal dust preparation system is characterized in that, it comprises blast fence (2) that is arranged on air-flow trunk line (1) and the rotary grid (9) that separates that is arranged on air-flow trunk line (1); Also comprise last insertion plate door (3) that is arranged on bypass air channel (10) and the lower plugboard door (7) that is arranged on bypass air channel (10) simultaneously; Between said two insertion plate doors, be provided with and catch grid (4) and stop grid (6), at said seizure grid (4) with stop between the grid (6) it is to get bin gate (5).
2. sundries separator for positive pressure coal dust preparation system as claimed in claim 1 is characterized in that, said separation grid (9) and blast fence (2) are fixed as one, and angle between the two is 60 °-120 °; Separating grid (9) and blast fence (2) is connected on the air-flow trunk line (1) through S. A. (8).
3. sundries separator for positive pressure coal dust preparation system as claimed in claim 2 is characterized in that, said S. A. adopts the positive pressure gas sealing.
4. sundries separator for positive pressure coal dust preparation system as claimed in claim 1 is characterized in that, said seizure grid (4) is fixed in the bypass air channel (10).
5. sundries separator for positive pressure coal dust preparation system as claimed in claim 1 is characterized in that, the said grid (6) that stops adopts sliding type or convertible.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103071794A CN101648652B (en) | 2009-09-17 | 2009-09-17 | Sundries separator for positive pressure coal dust preparation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103071794A CN101648652B (en) | 2009-09-17 | 2009-09-17 | Sundries separator for positive pressure coal dust preparation system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101648652A CN101648652A (en) | 2010-02-17 |
| CN101648652B true CN101648652B (en) | 2012-03-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103071794A Active CN101648652B (en) | 2009-09-17 | 2009-09-17 | Sundries separator for positive pressure coal dust preparation system |
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| CN (1) | CN101648652B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102989656A (en) * | 2012-12-13 | 2013-03-27 | 华电电力科学研究院 | Comb-type impurity separator for pressurized mill system |
| CN105728115B (en) * | 2016-04-27 | 2017-09-19 | 衢州市依科达节能技术有限公司 | A kind of wooden unit separates grinder |
| CN105797958B (en) * | 2016-05-08 | 2017-07-28 | 衢州市依科达节能技术有限公司 | A kind of cast wooden unit separates cutter |
| CN110152873B (en) * | 2019-06-06 | 2024-05-24 | 上海意丰机电科技开发有限公司 | Front-end sundry separating device of pulverized coal separator and coal mill |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3580644A (en) * | 1969-03-04 | 1971-05-25 | Brown & Williamson Tobacco | Pneumatic feed system for uniform supply of tobacco to cigarette making machines |
| CN2067188U (en) * | 1990-05-11 | 1990-12-12 | 上海石洞口发电厂 | Revolving woodblock separator |
| CN2782231Y (en) * | 2004-12-09 | 2006-05-24 | 钢铁研究总院 | Separator for powdered coal and sundries |
| CN201030359Y (en) * | 2007-04-06 | 2008-03-05 | 吴艳丽 | Automatic warehouse type foreign matter segregator |
| CN201494930U (en) * | 2009-09-17 | 2010-06-02 | 山东电力研究院 | Impurity separator for positive-pressure pulverized coal preparation system |
-
2009
- 2009-09-17 CN CN2009103071794A patent/CN101648652B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3580644A (en) * | 1969-03-04 | 1971-05-25 | Brown & Williamson Tobacco | Pneumatic feed system for uniform supply of tobacco to cigarette making machines |
| CN2067188U (en) * | 1990-05-11 | 1990-12-12 | 上海石洞口发电厂 | Revolving woodblock separator |
| CN2782231Y (en) * | 2004-12-09 | 2006-05-24 | 钢铁研究总院 | Separator for powdered coal and sundries |
| CN201030359Y (en) * | 2007-04-06 | 2008-03-05 | 吴艳丽 | Automatic warehouse type foreign matter segregator |
| CN201494930U (en) * | 2009-09-17 | 2010-06-02 | 山东电力研究院 | Impurity separator for positive-pressure pulverized coal preparation system |
Non-Patent Citations (1)
| Title |
|---|
| 王明海 等.煤粉制备***杂物分离装置的设计与应用.《山西冶金》.1994,(第54期),第35页-第37页. * |
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| Publication number | Publication date |
|---|---|
| CN101648652A (en) | 2010-02-17 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID CORPORATION OF CHINA Effective date: 20121218 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121218 Address after: 250100, No. 500, South Second Ring Road, Shizhong District, Shandong, Ji'nan Patentee after: SHANDONG ELECTRIC POWER Research Institute Patentee after: State Grid Corporation of China Address before: 250100, No. 500, South Second Ring Road, Shizhong District, Shandong, Ji'nan Patentee before: SHANDONG ELECTRIC POWER Research Institute |
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| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 250003 No. 2000, Wang Yue Road, Shizhong District, Ji'nan, Shandong Patentee after: Shandong Electric Power Research Institute Patentee after: State Grid Corporation of China Address before: 250100, No. 500, South Second Ring Road, Shizhong District, Shandong, Ji'nan Patentee before: Shandong Electric Power Research Institute Patentee before: State Grid Corporation of China |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 250003 No. 2000, Wang Yue Road, Shizhong District, Ji'nan, Shandong Patentee after: SHANDONG ELECTRIC POWER Research Institute Patentee after: STATE GRID CORPORATION OF CHINA Address before: 250003 No. 2000, Wang Yue Road, Shizhong District, Ji'nan, Shandong Patentee before: SHANDONG ELECTRIC POWER Research Institute Patentee before: State Grid Corporation of China |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220129 Address after: 250003 No. 2000, Wang Yue Road, Shizhong District, Ji'nan, Shandong Patentee after: ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER Co. Patentee after: STATE GRID CORPORATION OF CHINA Address before: 250003 No. 2000, Wang Yue Road, Shizhong District, Ji'nan, Shandong Patentee before: SHANDONG ELECTRIC POWER Research Institute Patentee before: STATE GRID CORPORATION OF CHINA |