CN204799339U - Fixed wind ring side air inlet ventilation unit of bowl formula coal pulverizer - Google Patents
Fixed wind ring side air inlet ventilation unit of bowl formula coal pulverizer Download PDFInfo
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- CN204799339U CN204799339U CN201520370026.5U CN201520370026U CN204799339U CN 204799339 U CN204799339 U CN 204799339U CN 201520370026 U CN201520370026 U CN 201520370026U CN 204799339 U CN204799339 U CN 204799339U
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- vane
- wind
- bowl
- ring
- wind ring
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Abstract
The utility model relates to a technical field is made to the coal pulverizer, especially relates to a fixed wind ring side air inlet ventilation unit of bowl formula coal pulverizer, include: shrouding (3), wind ring body (4), vent (5), mill bowl (6), kuppe (7), characterized by are gone up to casing (1), filler ring (2), wind ring: be equipped with filler ring (2) in casing (1), it is even as an organic whole that shrouding (3) are gone up to wind ring body (4) and wind ring, and the wind ring is gone up shrouding (3) border and is supported and be fixed in on filler ring (2), wind ring body (4) are located and grind bowl (6) border inboard and seted up vent (5), and vent (5) exit is equipped with the guide plate, wind ring is gone up and is equipped with several leak out clearance and kuppe (7) on shrouding (3). The beneficial effects of the utility model are that: alleviateed and ground bowl added mass, made the coal pulverizer power consumption reduce, reduced a wind resistance loss, made the wind coal reduce than reduction, primary air fan power consumption, reduce stone coal discharge capacity, reduced the average wear rate of wind ring.
Description
Technical field
The utility model relates to coal pulverizer manufacturing technology field, is exactly that a kind of Raymond bowl mill fixes vane side air inlet ventilation device.
Background technology
Vane in Raymond bowl mill is the vitals affecting its performance driving economy.The coal dust that suitable wind speed and air quantity must be had to be ground to form by coal pulverizer by vane guarantee is successfully transported to boiler-burner.If the wind speed passing through coal pulverizer vane is too high, air quantity is excessive, consequently: primary air fan power consumption increases, and coal dust is thicker, wearing and tearing aggravation, shortened equipment life; If wind speed is too low, air quantity is too small, then coal dust can be caused to carry and do not go out, boiler load band does not get on, and even causes pulverized coal channel to block, and pebble coal discharge capacity also can be caused to increase, even wherein carry a large amount of pulverized coal particle secretly, cause raw coal to waste.Separately independently, vane is fixed on coal pulverizer housing for early stage Raymond bowl mill mill bowl and vane.Adopt the shortcoming of fixing vane: one is that vane air outlet velocity is uneven, and vane wearing and tearing are uneven; Two is to reduce pebble coal discharge capacity, prevents from carrying raw coal secretly in the pebble coal discharged and haveing no alternative but improve primary air velocity, and primary air fan power consumption is increased, and also result in the aggravation of pulverized coal preparation system wearing and tearing and the increasing of coal pulverizer maintenance workload simultaneously.With the birth of the rotary wind ring of mill bowl one, open an approach for solving the problem, its advantage is: vane air outlet velocity, vane damage in impeller are tending towards even, and pebble coal discharge capacity and calorific value decline, and primary air fan power consumption reduces.But still there is its own shortcomings in rotary wind ring: 1) in order to improve the separative efficiency of coal dust and pebble coal and reduce pebble coal discharge capacity, restrictor ring is provided with in rotary wind ring blade exit side, by reducing vane flow area to improve wind speed, and restrictor ring certainly exists wearing and tearing and restriction loss; 2) restrictor ring uneven wear, come off and the uneven of vane air outlet velocity can be caused, and even vane air outlet velocity reduce, stone coal discharge amount increase, coal pulverizer performance driving economy decline; 3) vane inside and outside wall, blade, restrictor ring and backplate thereof make the impost grinding bowl increase, and cause coal pulverizer power consumption to increase; 4) wearing and tearing of vane outer wall, restrictor ring and backplate thereof are very fast, cause that the repair and maintenance cost of Raymond bowl mill increases, workload increasing.
Summary of the invention
The utility model fixes the deficiency of vane and rotary wind ring existence in order to solve prior art Raymond bowl mill, further reduction coal pulverizer, primary air fan power consumption, reduce pebble coal discharge capacity and pulverized coal preparation system wearing and tearing, and provide a kind of Raymond bowl mill to fix vane side air inlet ventilation device.
The utility model solves the technical scheme that its technical problem adopts: a kind of Raymond bowl mill fixes vane side air inlet ventilation device, comprise: casing (1), filler ring (2), vane upper sealing plate (3), vane body (4), ventilating opening (5), mill bowl (6), kuppe (7), it is characterized in that: in casing (1), be provided with filler ring (2), vane body (4) and vane upper sealing plate (3) are connected as a single entity, and vane upper sealing plate (3) edge supports and is fixed on filler ring (2); Vane body (4) is positioned at inside mill bowl (6) edge, and retains with it certain dynamic and static gaps; Vane body (4) offers ventilating opening (5), ventilating opening (5) exit is provided with deflector; Vane upper sealing plate (3) is provided with several gap of leaking out, and the gap location that leaks out is provided with kuppe (7).
The utility model beneficial effect compared with the prior art: the impost 1) significantly reducing mill bowl, can reduce coal pulverizer power consumption.2) average wear rate of fixing vane is less, can reduce coal pulverizer metal wastage.3) coal dust and pebble coal are throwing away in process along mill bowl edge, the stop of side direction horizontal deflection First air can be subject to, and part impinges to vane body time, can directly rebound to milling zone, the raw coal particle do not ground can be ground again, thus can greatly reduce pebble coal discharge capacity, and reduce phosphorus content wherein, alleviate the dust pollution in stone coal discharge process.4) because First air is that self-ventilation mouth side direction enters mill bowl, before ventilating opening, pulverized coal particle does not need for overcoming gravity suffered by pulverized coal particle and consumed energy, therefore First air drag losses reduces, add that grinding separated space reduces the employing making coal powder density raising and vane outlet water conservancy diversion deflection technique, greatly can improve First air and transfer efficiency is carried to coal dust, be conducive to reducing coal-air ratio, therefore under condition exerted oneself on an equal basis by coal pulverizer, also can suitably reduce primary air pressure and wind speed, be beneficial to reduction wearing and tearing and realize primary air fan energy-conservation.
Accompanying drawing explanation
Fig. 1 is the utility model structural principle schematic diagram; Fig. 2 is the utility model vane schematic top plan view; Fig. 3 is the schematic diagram that the utility model vane device is fixedly assembled in Raymond bowl mill housing.
In figure: 1-casing, 2-filler ring, 3-vane upper sealing plate, 4-vane body, 5-ventilating opening, 6-grinds bowl, 7-kuppe.
Detailed description of the invention
Be described principle of the present utility model and feature below in conjunction with accompanying drawing, illustrated embodiment is only for explaining explanation, being not intended to limit scope of the present utility model.All any amendments, improvement, equivalent replacement etc. made within thought of the present utility model and principle, all should be included within protection domain of the present utility model.
See Fig. 1, a kind of Raymond bowl mill fixes vane side air inlet ventilation device, comprise: casing (1), filler ring (2), vane upper sealing plate (3), vane body (4), ventilating opening (5), mill bowl (6), kuppe (7), it is characterized in that: in casing (1), be provided with filler ring (2), vane body (4) and vane upper sealing plate (3) are connected as a single entity, and vane upper sealing plate (3) edge supports and is fixed on filler ring (2); Vane body (4) is positioned at inside mill bowl (6) edge, and retains with it certain dynamic and static gaps; Vane body (4) offers ventilating opening (5), ventilating opening (5) exit is provided with deflector (not shown).
See Fig. 2, vane upper sealing plate (3) is provided with several gap of leaking out, and the gap location that leaks out is provided with kuppe (7); This gap of leaking out also directly can be made up of the assembly clearance between the vane device parts of segment design.
Claims (3)
1. a Raymond bowl mill fixes vane side air inlet ventilation device, comprise: casing (1), filler ring (2), vane upper sealing plate (3), vane body (4), ventilating opening (5), mill bowl (6), kuppe (7), it is characterized in that: in casing (1), be provided with filler ring (2), vane body (4) and vane upper sealing plate (3) are connected as a single entity, and vane upper sealing plate (3) edge supports and is fixed on filler ring (2); Vane body (4) is positioned at inside mill bowl (6) edge, and retains with it certain dynamic and static gaps, vane body (4) offers ventilating opening (5).
2. a kind of Raymond bowl mill as claimed in claim 1 fixes vane side air inlet ventilation device, it is characterized in that: described vane upper sealing plate (3) is provided with several gap of leaking out, and the gap location that leaks out is provided with kuppe (7).
3. a kind of Raymond bowl mill as claimed in claim 1 fixes vane side air inlet ventilation device, it is characterized in that: described ventilating opening (5) exit is provided with deflector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520370026.5U CN204799339U (en) | 2015-05-26 | 2015-05-26 | Fixed wind ring side air inlet ventilation unit of bowl formula coal pulverizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520370026.5U CN204799339U (en) | 2015-05-26 | 2015-05-26 | Fixed wind ring side air inlet ventilation unit of bowl formula coal pulverizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204799339U true CN204799339U (en) | 2015-11-25 |
Family
ID=54584230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520370026.5U Expired - Fee Related CN204799339U (en) | 2015-05-26 | 2015-05-26 | Fixed wind ring side air inlet ventilation unit of bowl formula coal pulverizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204799339U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109400426A (en) * | 2018-10-25 | 2019-03-01 | 西安近代化学研究所 | A kind of safe grinding device of castexplosive and method |
-
2015
- 2015-05-26 CN CN201520370026.5U patent/CN204799339U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109400426A (en) * | 2018-10-25 | 2019-03-01 | 西安近代化学研究所 | A kind of safe grinding device of castexplosive and method |
| CN109400426B (en) * | 2018-10-25 | 2021-01-29 | 西安近代化学研究所 | Fusion cast explosive safety grinding device and method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151125 Termination date: 20160526 |