CN202460793U - Lower bearing air-cooling device for vertical mill powder concentrator - Google Patents
Lower bearing air-cooling device for vertical mill powder concentrator Download PDFInfo
- Publication number
- CN202460793U CN202460793U CN201220028023XU CN201220028023U CN202460793U CN 202460793 U CN202460793 U CN 202460793U CN 201220028023X U CN201220028023X U CN 201220028023XU CN 201220028023 U CN201220028023 U CN 201220028023U CN 202460793 U CN202460793 U CN 202460793U
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- Prior art keywords
- powder concentrator
- lower bearing
- vertical mill
- mill powder
- airduct
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Abstract
The utility model discloses a lower bearing air-cooling device for a vertical mill powder concentrator. The lower bearing air-cooling device for the vertical mill powder concentrator comprises a spindle which is vertically arranged in a powder concentrator shell, and a lower bearing and a bearing block thereof which are arranged on the lower part of the spindle, wherein an air sleeve is arranged outside the bearing block; and an air inlet of the air sleeve is communicated with the outer side of the shell through an air pipe. Compared with the prior art, the lower bearing air-cooling device for the vertical mill powder concentrator solves the problems that the lower bearing of the conventional vertical mill powder concentrator is high in operating temperature, easy to damage and short in service life.
Description
Technical field
The utility model relates to machinery manufacturing technology field, especially a kind of device that is used to cool off Vertical Mill powder concentrator lower bearing.
Background technology
At present; The vertical roller grinder that industries such as domestic cement, colliery are handled raw material or slag all adopts " single blower fan flow process " usually; Be that raw material or slag are ground through feeding air valve feeding roller by the feeding belt; In roller mill material along with the rotation of mill from mind-set border movement wherein, receive the extruding of grinding roller simultaneously and pulverized.Material after the pulverizing is taken up by the hot gas that gets into from vane in mill edge, and coarse granule falls back to mill grinding again; Be brought to powder concentrator than fine grained and carry out sorting, meal also turns back to mill grinding again, and qualified fine powder is brought into bag filter and collects as finished product.The large granular materials that part is difficult for pulverizing can not be taken up by hot blast at the vane place, gets into external circulating system through the scum mouth, after this process deironing, gets into the roller mill once more with the new material grinding of feeding.The finished product that goes out dust-precipitator is sent in the warehouse for finished product through equipment such as air conveyer flume, elevators.And the main shaft of the more fine grain powder concentrator of this sorting is to erect through two pairs of bearings up and down to be installed in the housing of powder concentrator, and that wherein is installed in this main shaft bottom all is installed in the bearing block bearing (lower bearing) usually, and this lower bearing and bearing block thereof are in the powder concentrator housing powder air channel; Like this; Bearing block directly contacts about 300 ℃ of slag Vertical Mill hot-wind inlet temperature, about 100 ℃ of outlet temperature with interior hot blast of powder concentrator and thermal material; Environment temperature is about more than 100 ℃ in the powder concentrator; Cause powder concentrator lower bearing temperature drift, surpass the alarming value of default and fall to stop, and then cause to shut down and stop production.In order to give the cooling of powder concentrator lower bearing, adopt lubricating oil quality, lubricants capacity and lubrication time to this bearing to improve usually or improve the method for putting, add and make every effort to when operating machines stablize, avoid big fluctuation or the like, but poor effect.
The utility model content
The utility model problem to be solved provides a kind of Vertical Mill powder concentrator lower bearing air cooling equipment, and is high to solve existing Vertical Mill powder concentrator lower bearing serviceability temperature, fragile and problem that service life is disconnected.
In order to address the above problem; The technical scheme of the utility model is: this Vertical Mill powder concentrator lower bearing air cooling equipment includes to erect and is installed in the main shaft in the powder concentrator housing; With the lower bearing and the bearing block thereof that are installed in said main shaft bottom; The wind cover is installed outside said bearing block, and the air inlet of said wind cover is communicated with said outside through airduct.
In the technique scheme, more concrete scheme can be: said airduct is a metal tube, and this airduct outer surface is pasted with the paster that is made up of hard material.The outlet of said airduct is towards departing from said main shaft setting.
Said airduct is a metal tube, and this airduct outer surface is pasted with the paster that is made up of hard material.The air outlet of said wind cover is provided with along said main shaft straight down.The outlet of said airduct is towards departing from said main shaft setting.
Owing to adopted technique scheme, the utility model compared with prior art has following beneficial effect:
1, this Vertical Mill powder concentrator lower bearing air cooling equipment is installed the wind cover outside the bearing block of Vertical Mill powder concentrator main shaft lower bearing; The air inlet of this wind cover is connected outward with the powder concentrator housing through airduct; Can utilize powder concentrator enclosure interior principle of negative pressure like this;, airduct cools off external environment gas nature in being drawn into the wind cover this bearing; Hot blast after the heating, the air outlet that overlaps from wind is discharged to outside the housing of Vertical Mill powder concentrator, does not need external force can make Vertical Mill powder concentrator lower bearing environment obtain limited cooling.For example use homemade TRMS4341 type slag Vertical Mill, the combination high-efficiency cage modle powder concentrator that its powder concentrator selects for use the sound attitude to combine, its lower bearing temperature is higher always; Generally more than 95 ℃, the highlyest surpass 100 ℃ and cause and report to the police to fall to stop, jeopardize equipment state; And then influence production, behind use the utility model, this powder concentrator is when normal the use; Its lower bearing temperature is reduced to below 80 ℃; Cooling obviously, be 10 times of prior art (these bearings about 80,000 hours of normal service time, if change once because of this bearing high temperature burns out because of the high ambient temperature influence is annual probably) service life of lower bearing;
2, owing to prolonged the service life of lower bearing greatly, therefore reduced the number of times of safeguarding and changing and reduced the influence of shutting down producing.Can guarantee under environment temperature and the lubricated nominal situation that vertical mill system runs well improving; Then every couple of days can occur reporting to the police to fall to stop to have to stop grinding more than two hours because of this bearing temperature is high before transforming, and treats the production of could starting shooting once more when this bearing temperature is reduced to safe temperature.
Description of drawings
Fig. 1 is the front view of the utility model embodiment;
Fig. 2 is the A place enlarged drawing among Fig. 1;
Being masked as among the figure: 1-lower bearing and bearing block thereof, 2-shaft coupling, 3-wind cover, 4-airduct, 5-ceramic paster, 6-housing, 7-main shaft.
The specific embodiment
Implement the utility model is done further to detail below in conjunction with accompanying drawing:
Fig. 1, Vertical Mill powder concentrator lower bearing air cooling equipment shown in Figure 2 have a setting to be installed in the main shaft 7 in the powder concentrator housing 6; With lower bearing that is installed in main shaft 7 bottoms and bearing block 1 thereof; Wind cover 3 is installed outside bearing block; Wind cover 3 is provided with air inlet and air outlet, and its air inlet is through airduct 4 and housing 6 external communications.Airduct 4 is a metal tube, and its outer surface posts ceramic paster 5.The air outlet of wind cover 3 is provided with along main shaft straight down, and in the present embodiment, the shaft coupling 2 of main shaft 7 and wind overlap that to stay next gap length between 3 edges be L (present embodiment L=5 millimeter), as the air outlet discharge hot blast of wind cover 3.
The utility model is installed wind cover 3 outside the bearing block of Vertical Mill powder concentrator main shaft lower bearing; The air inlet of this wind cover 3 is through airduct 4 and 6 outer connections of powder concentrator housing; Can utilize powder concentrator housing 6 internal negative pressure principles like this;, airduct 4 cools off external environment gas nature in being drawn into wind cover 3 this bearing; Hot blast after the heating is discharged to outside the housing 6 of Vertical Mill powder concentrator from the air outlet (gap L) of wind cover 3, does not need external force can make Vertical Mill powder concentrator lower bearing environment obtain limited cooling.The outlet of airduct 4 is provided with towards departing from main shaft 7.
The utility model can be used as the lower bearing air cooling equipment of equipment such as raw material roller mill powder concentrator, coal power separator.
Claims (5)
1. Vertical Mill powder concentrator lower bearing air cooling equipment; Include to erect and be installed in the main shaft in the powder concentrator housing; With the lower bearing and the bearing block thereof that are installed in said main shaft bottom; It is characterized in that: the wind cover is installed outside said bearing block, and the air inlet of said wind cover is communicated with said outside through airduct.
2. Vertical Mill powder concentrator lower bearing air cooling equipment according to claim 1, it is characterized in that: said airduct is a metal tube, this airduct outer surface is pasted with the paster that is made up of hard material.
3. Vertical Mill powder concentrator lower bearing air cooling equipment according to claim 1 and 2 is characterized in that: the air outlet of said wind cover is provided with along said main shaft straight down.
4. Vertical Mill powder concentrator lower bearing air cooling equipment according to claim 1 and 2 is characterized in that: the outlet of said airduct is towards departing from said main shaft setting.
5. Vertical Mill powder concentrator lower bearing air cooling equipment according to claim 3 is characterized in that: the outlet of said airduct is towards departing from said main shaft setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220028023XU CN202460793U (en) | 2012-01-22 | 2012-01-22 | Lower bearing air-cooling device for vertical mill powder concentrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220028023XU CN202460793U (en) | 2012-01-22 | 2012-01-22 | Lower bearing air-cooling device for vertical mill powder concentrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202460793U true CN202460793U (en) | 2012-10-03 |
Family
ID=46908993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220028023XU Expired - Fee Related CN202460793U (en) | 2012-01-22 | 2012-01-22 | Lower bearing air-cooling device for vertical mill powder concentrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202460793U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105903537A (en) * | 2016-04-12 | 2016-08-31 | 李奇峰 | Slag vertical milling powder concentrator |
| CN108953394A (en) * | 2018-07-23 | 2018-12-07 | 山西太钢不锈钢股份有限公司 | A kind of thermal environment operating condition external bearings independence air cooling equipment and the operating method that cools down |
| CN109395856A (en) * | 2018-10-31 | 2019-03-01 | 长沙万荣粉体设备科技有限公司 | A kind of honeycomb mill |
-
2012
- 2012-01-22 CN CN201220028023XU patent/CN202460793U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105903537A (en) * | 2016-04-12 | 2016-08-31 | 李奇峰 | Slag vertical milling powder concentrator |
| CN108953394A (en) * | 2018-07-23 | 2018-12-07 | 山西太钢不锈钢股份有限公司 | A kind of thermal environment operating condition external bearings independence air cooling equipment and the operating method that cools down |
| CN109395856A (en) * | 2018-10-31 | 2019-03-01 | 长沙万荣粉体设备科技有限公司 | A kind of honeycomb mill |
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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 |
Granted publication date: 20121003 Termination date: 20180122 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |