CN204953090U - Coal pulverizer wind ring device - Google Patents
Coal pulverizer wind ring device Download PDFInfo
- Publication number
- CN204953090U CN204953090U CN201520539714.XU CN201520539714U CN204953090U CN 204953090 U CN204953090 U CN 204953090U CN 201520539714 U CN201520539714 U CN 201520539714U CN 204953090 U CN204953090 U CN 204953090U
- Authority
- CN
- China
- Prior art keywords
- coal pulverizer
- ring
- impeller
- camber steel
- impeller wind
- 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.)
- Expired - Fee Related
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- Crushing And Grinding (AREA)
Abstract
The utility model discloses a coal pulverizer wind ring device, including installing the impeller wind ring on grinding the bowl, the inboard upper portion welding of impeller wind ring has restrictor ring, reduces flow area b for 0.4-0.5 m2 through restrictor ring, inclining to add between end circle to impeller wind intra -annular outside restrictor ring and welding a camber steel sheet, the messenger's camber steel sheet and the impeller wind ring outside form streamlined nozzle, the impeller wind ring outside is installed and is adjusted the cover, the regulation side of covering is the separator, the base welt parallel and level of separator is arranged, and the clearance a who adjusts between cover top and the base welt is 6-8mm. The utility model discloses an add between the restrictor ring outside to impeller wind intra -annular side end circle and weld a camber steel sheet, make the camber steel sheet and the impeller wind ring outside form streamlined nozzle, make once distinguished and admirable when crossing impeller wind ring the distribution more even to make the resistance loss reduce, in order to guarantee requiring the velocity of flow to reach V=55ms when the flow Q=70KNm3h, reduced the ER for emission rate of stone coal.
Description
Technical field
The utility model relates to coal pulverizer field, specifically a kind of coal pulverizer vane device.
Background technology
The effective wind speed at the impeller vane place of coal pulverizer vane device determines the most important factor of HP coal pulverizer stone coal discharge amount, through field surveys and calculating, the impeller vane place effective theory wind speed of existing coal pulverizer vane device is under v=35 ~ 40m/s(nominal situation), flow area is about S=0.5 ~ 0.6m
2, when ature of coal difference, stone coal discharge rate is larger.
Summary of the invention
The purpose of this utility model is to provide a kind of coal pulverizer vane device, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of coal pulverizer vane device, comprises the impeller vane be arranged on mill bowl; The inside upper part of described impeller vane is welded with restrictor ring, by restrictor ring, flow area b is reduced into 0.4 ~ 0.5 ㎡; Outside restrictor ring, be welded with one block of camber steel plate to inside impeller vane between end circle, make to form Streamline Nozzles outside camber steel plate and impeller vane; Be provided with outside described impeller vane and regulate cover, described adjustment cover top is separator, the base liner plate flush arrangement of described separator; And regulate the gap a between cover top and base liner plate to be 6 ~ 8mm.
As further program of the utility model: the 16Mn camber steel plate of described camber steel plate to be thickness be 10-15mm.
As the utility model further scheme: the thickness of described camber steel plate is 12mm.
As further program of the utility model: the gap a between described adjustment cover top and base liner plate is 7mm.
As further program of the utility model: be provided with at the tunnel inlet of Streamline Nozzles the baffle plate that thickness is 140-160mm.
As further program of the utility model: the thickness of described baffle plate is 150mm.
Compared with prior art, the beneficial effects of the utility model are: the utility model by being welded with one block of camber steel plate to inside impeller vane between end circle outside restrictor ring, make to form Streamline Nozzles outside camber steel plate and impeller vane, distribute more even when making First air flow through impeller vane, and drag losses is reduced, to ensure as flow Q=70KNm
3during/h, require that flow velocity reaches V=55m/s, in addition, decrease the gap a regulated between cover top and base liner plate, and the flow area b of impeller vane, improve impeller vane place primary air velocity, and then decrease the emission index of pebble coal.
Accompanying drawing explanation
Fig. 1 is the structural representation of coal pulverizer vane device.
In figure: 1-grinds bowl, 2-restrictor ring, 3-separator, 4-adjustment cover, 5-impeller vane, 6-baffle plate, 7-Streamline Nozzles, 8-camber steel plate.
Detailed description of the invention
Be described in more detail below in conjunction with the technical scheme of detailed description of the invention to this patent.
Refer to Fig. 1, a kind of coal pulverizer vane device, comprise the impeller vane 5 be arranged on mill bowl 1; The inside upper part of described impeller vane 5 is welded with restrictor ring 2, by restrictor ring 2, flow area b is reduced into 0.4 ~ 0.5 ㎡ (impeller horizontal clearance is 50mm); One block of camber steel plate 8 is welded with to inside impeller vane 5 between end circle outside restrictor ring 2, make to form Streamline Nozzles 7 outside camber steel plate 8 and impeller vane 5, distribute more even when making First air flow through impeller vane 5, and drag losses is reduced, to ensure as flow Q=70KNm
3during/h, require that flow velocity reaches V=55m/s, decrease the emission index of pebble coal.As preferably, the 16Mn camber steel plate of described camber steel plate 8 to be thickness be 10-15mm; Further preferably, the thickness of described camber steel plate 8 is 12mm.
In the utility model, being provided with outside described impeller vane 5 and regulating cover 4, is separator 3 above described adjustment cover 4, the base liner plate flush arrangement of described separator 3; And regulate the gap a between cover 4 top and base liner plate to be 6 ~ 8mm; In addition according to me to coal pulverizer operation and maintenance experience for many years, find above-mentioned gap a to be reduced further by 8 original ~ 10mm, when adjustment cover 4 can be made to rotate with impeller vane 5, can keep less, uniform gap, reduce inleakage.
In the utility model, at the tunnel inlet of Streamline Nozzles 7, the baffle plate 6 that thickness is 150mm is installed, to prevent pebble coal from entering air channel, prevents air channel inner product coal and coking, reduce the loss of First air flow and pressure; And clear up pebble coal when each inspection coal pulverizer.
Above the better embodiment of this patent is explained in detail, but this patent is not limited to above-mentioned embodiment, in the ken that one skilled in the relevant art possesses, can also makes a variety of changes under the prerequisite not departing from this patent aim.
Claims (6)
1. a coal pulverizer vane device, comprises the impeller vane be arranged on mill bowl; It is characterized in that, the inside upper part of described impeller vane is welded with restrictor ring, by restrictor ring, flow area b is reduced into 0.4 ~ 0.5 ㎡; Outside restrictor ring, be welded with one block of camber steel plate to inside impeller vane between end circle, make to form Streamline Nozzles outside camber steel plate and impeller vane; Be provided with outside described impeller vane and regulate cover, described adjustment cover top is separator, the base liner plate flush arrangement of described separator; And regulate the gap a between cover top and base liner plate to be 6 ~ 8mm.
2. coal pulverizer vane device according to claim 1, is characterized in that, the 16Mn camber steel plate of described camber steel plate to be thickness be 10-15mm.
3. coal pulverizer vane device according to claim 2, is characterized in that, the thickness of described camber steel plate is 12mm.
4. coal pulverizer vane device according to claim 1, is characterized in that, the described gap a covered between top and base liner plate that regulates is 7mm.
5. according to the coal pulverizer vane device one of claim 1-4 Suo Shu, it is characterized in that, at the tunnel inlet of Streamline Nozzles, the baffle plate that thickness is 140-160mm is installed.
6. coal pulverizer vane device according to claim 5, is characterized in that, the thickness of described baffle plate is 150mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520539714.XU CN204953090U (en) | 2015-07-24 | 2015-07-24 | Coal pulverizer wind ring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520539714.XU CN204953090U (en) | 2015-07-24 | 2015-07-24 | Coal pulverizer wind ring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204953090U true CN204953090U (en) | 2016-01-13 |
Family
ID=55048188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520539714.XU Expired - Fee Related CN204953090U (en) | 2015-07-24 | 2015-07-24 | Coal pulverizer wind ring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204953090U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109475878A (en) * | 2016-07-21 | 2019-03-15 | 株式会社Ihi | Vertical roll grinder |
| CN109675682A (en) * | 2019-01-21 | 2019-04-26 | 唐山冀东装备工程股份有限公司 | A kind of vane device for slag vertical-mill |
| CN110404660A (en) * | 2019-07-10 | 2019-11-05 | 大唐东北电力试验研究院有限公司 | A kind of medium-speed pulverizer vane current equalizing structure |
-
2015
- 2015-07-24 CN CN201520539714.XU patent/CN204953090U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109475878A (en) * | 2016-07-21 | 2019-03-15 | 株式会社Ihi | Vertical roll grinder |
| US10967382B2 (en) | 2016-07-21 | 2021-04-06 | Ihi Corporation | Vertical roller mill |
| 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 |
| CN109675682A (en) * | 2019-01-21 | 2019-04-26 | 唐山冀东装备工程股份有限公司 | A kind of vane device for slag vertical-mill |
| CN110404660A (en) * | 2019-07-10 | 2019-11-05 | 大唐东北电力试验研究院有限公司 | A kind of medium-speed pulverizer vane current equalizing structure |
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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: 20160113 Termination date: 20170724 |