CN203508107U - Wear-resisting impeller device - Google Patents
Wear-resisting impeller device Download PDFInfo
- Publication number
- CN203508107U CN203508107U CN201320654890.9U CN201320654890U CN203508107U CN 203508107 U CN203508107 U CN 203508107U CN 201320654890 U CN201320654890 U CN 201320654890U CN 203508107 U CN203508107 U CN 203508107U
- Authority
- CN
- China
- Prior art keywords
- impeller
- wear
- abrasion
- ring segment
- proof
- 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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Abstract
The utility model provides a wear-resisting impeller device. The wear-resisting impeller device comprises a grinding bowel and an impeller, wherein a grinding bowel extending ring of the grinding bowel is fixedly connected with an impeller fixed plate of the impeller; the impeller fixed plate is connected with an impeller wear-resisting protecting plate and is also provided with an inclined plate, and one end of the inclined plate is fixedly connected with an adjustable cover through a bolt assembly; the end surface of the impeller wear-resisting protecting plate is in tight fit with the end surface of an outer ring of the impeller fixed plate, and the impeller wear-resisting protecting plate is connected with an air throttling ring fan-shaped body b.According to the technical scheme, the impeller fixed plate is connected with the impeller wear-resisting protecting plate, and the impeller wear-resisting protecting plate is used for protecting the impeller. The wear-resisting impeller device provided by the utility model has the advantages that a wear-resisting property of the impeller is improved, the service life of the impeller is prolonged, the impeller wear-resisting protecting plate is connected with the air throttling ring fan-shaped body b so as to adjust the supply air rate so that the airflow can pass the space between the air throttling ring fan-shaped body b and the adjustable cover; and the direction of the airflow is adjusted, so that the airflow is prevented from scouring the fixed plate.
Description
Technical field
The utility model relates to a kind of equipment that grinds coal dust, relates in particular to a kind of abrasion proof impeller device.
Background technology
Coal pulverizer is the capital equipment that current iron-smelter and power plant grind coal dust, groundwork principle is as follows: raw coal is on the mill bowl of grinding machine center coal-feeding tube feeding rotation, under the effect of centrifugal force, radially move to grinding ring outwardly, under the Burnisher apparatus swaying, pass through.Burnisher apparatus makes coal form coal bed under grinding roller, and is milled into powder between bull ring and grinding roller.In the mill processes of coal, less lighter particle is blown afloat from mill bowl by the pumped (conveying) medium of gaseous state (hot-air) continuously.Air has three effects, and first, air is transported to next storage facilities by coal dust from grinding machine; The second, it provides necessary power to make coal dust carry out separation in coal pulverizer, and then controls the fineness of outlet coal dust; The 3rd, heated air is dried and makes it be easy to grind coal in the stone roller process processed of coal dust.Visible, hot-air the flow direction of grinding machine inside whole coal dust grind process in play a key effect.
Hot-air is to enter under mill bowl, and air is by the flow through external diameter of rotating grinding bowl of mill bowl annular space around.The blade (impeller) being contained on mill bowl makes air-flow be tending towards vertical direction.Mill bowl external diameter compared with little being carried by air-flow compared with light coal grain and on, and the heavy external foreign material that are difficult for grinding pass air-flow by impeller and fall into side body area, through slag-drip opening, discharge.Impeller washes away and the wearing and tearing of foreign material through air-flow, and the position serious wear that impeller and mill bowl extended loop are connected, easily causes impeller to come off, the plant issue being overhauled by forced-stopping machine, make service life of equipment short, repair and maintenance amount increases, and impact is produced and equipment stable operation; In addition, because the impeller air vent of reinforcing at ordinary times after soldering is irregular, the air-flow that causes entering mill bowl top is unstable, and unit-hour output is reduced, and directly affects the production of powder process.
Summary of the invention
Technical problem to be solved in the utility model, is exactly for the existing deficiency of prior art, and provides a kind of anti-wear performance good, long service life, regular maintenance is few, energy abatement apparatus hidden danger, reduce the generation of accident, improved the abrasion proof impeller device of process equipment reliability.
This programme is achieved by the following technical measures: abrasion proof impeller device of the present utility model, comprise mill bowl and impeller, it is characterized in that: the impeller fixed head that is fixedly connected with impeller on the mill bowl extended loop of described mill bowl, on this impeller fixed head, be connected with impeller abrasion-proof backplate, on impeller fixed head, be also provided with swash plate, one end of this swash plate is fixedly connected with adjustable cover by bolt assembly.At impeller and mill bowl extended loop connecting portion, be provided with impeller abrasion-proof backplate, because this impeller abrasion-proof backplate has stronger antiscour and wearing and tearing ability, be arranged on this position easy to wear, make it impeller protect.Improve the anti-wear performance of impeller, extended the service life of impeller.
Further improvement of the utility model is: between described mill bowl extended loop and impeller fixed head, be bolted, this bolt head stretches in impeller fixed head completely.The counterbore of bolt is deepened, bolt is screwed in hole, bolt head stretches in impeller fixed head completely.Setting has not only increased the stability between mill bowl extended loop and impeller fixed head like this, is more conducive to the installation of impeller abrasion-proof backplate.
Further improvement of the utility model is: described impeller abrasion-proof backplate is welded on the outer ring of impeller fixed head, and the cycle surface of the end face of this impeller abrasion-proof backplate and impeller fixed head fits tightly.Impeller abrasion-proof backplate is installed along impeller fixed head outer ring, made it to protect set bolt and impeller fixed head not to be subject to any washing away, improve the anti-wear performance of this abrasion proof impeller device, extend its service life.
Further improvement of the utility model is: described abrasion proof impeller backplate is connected with air throttle ring segment b.Air throttle ring segment b is installed and adjusts intake, air-flow is passed through between air throttle ring segment b and adjustable cover, airflow direction is adjusted, avoided air-flow washing away fixed head.
Further improvement of the utility model is: the outside of described air throttle ring segment b is connected with air throttle ring segment a.In the outside of air throttle ring segment b, connect again air throttle ring segment a, can stop the erosive wear of air-flow to set bolt and impeller fixed head, impeller unit is firmly arranged on mill bowl extended loop, the extension device life-span is more than 10 times, reduced plant maintenance amount, eliminate hidden trouble of equipment, increased the security reliability of equipment, guaranteed the stable operation that powder process is produced.
Further improvement of the utility model is: between described air throttle ring segment b and abrasion proof impeller backplate, be welded and fixed between air throttle ring segment b and air throttle ring segment a, the length in described air throttle ring segment b cross section is greater than the length in air throttle ring segment a cross section.
The beneficial effect of this programme can be learnt according to the narration to such scheme, due in this scheme, is connected with impeller abrasion-proof backplate on impeller fixed head, and impeller abrasion-proof backplate is protected impeller.Improve the anti-wear performance of impeller, extended the service life of impeller; At abrasion proof impeller backplate, connect air throttle ring segment b, to adjust intake, air-flow is passed through between air throttle ring segment b and adjustable cover, airflow direction is adjusted, avoided air-flow washing away fixed head.As can be seen here, the utility model compared with prior art, has substantive distinguishing features and progress, and the beneficial effect of its enforcement is also apparent.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model specific embodiment.
In figure, 1 is mill bowl extended loop, and 2 is bolt, and 3 is impeller fixed head, and 3a is impeller abrasion-proof backplate, and 4 is adjustable cover, and 5 is bolt assembly, and 6 is air throttle ring segment a, and 7 is air throttle ring segment b.
The specific embodiment
For clearly demonstrating the technical characterstic of this programme, below by a specific embodiment, and in conjunction with its accompanying drawing, this programme is set forth.
By accompanying drawing, can find out, the abrasion proof impeller device of the present utility model of this programme, comprise mill bowl and impeller, on the mill bowl extended loop 1 of described mill bowl, be fixedly connected with the impeller fixed head 3 of impeller, on this impeller fixed head 3, be connected with impeller abrasion-proof backplate 3a, on impeller fixed head 3, be also provided with swash plate, one end of this swash plate is fixedly connected with adjustable cover 4 by bolt assembly 5.At impeller and mill bowl extended loop connecting portion, be provided with impeller abrasion-proof backplate, because this impeller abrasion-proof backplate has stronger antiscour and wearing and tearing ability, be arranged on this position easy to wear, make it impeller protect.Improve the anti-wear performance of impeller, extended the service life of impeller.
Further improvement of the utility model is: fixing by bolt 2 between described mill bowl extended loop 1 and impeller fixed head 3, these bolt 2 heads stretch in impeller fixed head completely.The counterbore of bolt 2 is deepened, bolt 2 is screwed in hole, bolt head stretches in impeller fixed head completely.Setting has not only increased the stability between mill bowl extended loop and impeller fixed head like this, is more conducive to the installation of impeller abrasion-proof backplate.
Further improvement of the utility model is: described impeller abrasion-proof backplate 3a is welded on the outer ring of impeller fixed head 3, and the end face of this impeller abrasion-proof backplate 3a and the cycle surface of impeller fixed head 3 fit tightly.Impeller abrasion-proof backplate is installed along impeller fixed head outer ring, made it to protect set bolt and impeller fixed head not to be subject to any washing away, improve the anti-wear performance of this abrasion proof impeller device, extend its service life.
Further improvement of the utility model is: described abrasion proof impeller backplate 3a is connected with air throttle ring segment b7.Air throttle ring segment b7 is installed and adjusts intake, air-flow is passed through between air throttle ring segment b and adjustable cover, airflow direction is adjusted, avoided air-flow washing away fixed head.
Further improvement of the utility model is: the outside of described air throttle ring segment b7 is connected with air throttle ring segment a6.In the outside of air throttle ring segment b, connect again air throttle ring segment a, can stop the erosive wear of air-flow to set bolt and impeller fixed head, impeller unit is firmly arranged on mill bowl extended loop, the extension device life-span is more than 10 times, reduced plant maintenance amount, eliminate hidden trouble of equipment, increased the security reliability of equipment, guaranteed the stable operation that powder process is produced.
Further improvement of the utility model is: between described air throttle ring segment b7 and abrasion proof impeller backplate 3a, be welded and fixed between air throttle ring segment b7 and air throttle ring segment a6, the length in described air throttle ring segment b cross section is greater than the length in air throttle ring segment a cross section.
The beneficial effect of this programme can be learnt according to the narration to such scheme, due in this scheme, is connected with impeller abrasion-proof backplate on impeller fixed head, and impeller abrasion-proof backplate is protected impeller.Improve the anti-wear performance of impeller, extended the service life of impeller; At abrasion proof impeller backplate, connect air throttle ring segment b, to adjust intake, air-flow is passed through between air throttle ring segment b and adjustable cover, airflow direction is adjusted, avoided air-flow washing away fixed head.As can be seen here, the utility model compared with prior art, has substantive distinguishing features and progress, and the beneficial effect of its enforcement is also apparent.
The utility model can pass through existing techniques in realizing without the technical characterictic of describing, and does not repeat them here.Certainly; above-mentioned explanation is not to restriction of the present utility model; the utility model is also not limited in above-mentioned giving an example, and the variation that those skilled in the art make in essential scope of the present utility model, remodeling, interpolation or replacement, also should belong to protection domain of the present utility model.
Claims (6)
1. an abrasion proof impeller device, comprise mill bowl and impeller, it is characterized in that: the impeller fixed head that is fixedly connected with impeller on the mill bowl extended loop of described mill bowl, on this impeller fixed head, be connected with impeller abrasion-proof backplate, on impeller fixed head, be also provided with swash plate, one end of this swash plate is fixedly connected with adjustable cover by bolt assembly.
2. abrasion proof impeller device according to claim 1, is characterized in that: between described mill bowl extended loop and impeller fixed head, be bolted, this bolt head stretches in impeller fixed head completely.
3. abrasion proof impeller device according to claim 2, is characterized in that: described impeller abrasion-proof backplate is welded on the outer ring of impeller fixed head, and the cycle surface of the end face of this impeller abrasion-proof backplate and impeller fixed head fits tightly.
4. abrasion proof impeller device according to claim 3, is characterized in that: described abrasion proof impeller backplate is connected with air throttle ring segment b.
5. abrasion proof impeller device according to claim 4, is characterized in that: the outside of described air throttle ring segment b is connected with air throttle ring segment a.
6. abrasion proof impeller device according to claim 5, it is characterized in that: between described air throttle ring segment b and abrasion proof impeller backplate, be welded and fixed between air throttle ring segment b and air throttle ring segment a, the length in described air throttle ring segment b cross section is greater than the length in air throttle ring segment a cross section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320654890.9U CN203508107U (en) | 2013-10-23 | 2013-10-23 | Wear-resisting impeller device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320654890.9U CN203508107U (en) | 2013-10-23 | 2013-10-23 | Wear-resisting impeller device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203508107U true CN203508107U (en) | 2014-04-02 |
Family
ID=50367092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320654890.9U Expired - Fee Related CN203508107U (en) | 2013-10-23 | 2013-10-23 | Wear-resisting impeller device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203508107U (en) |
-
2013
- 2013-10-23 CN CN201320654890.9U patent/CN203508107U/en not_active Expired - Fee Related
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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: 20140402 Termination date: 20141023 |
|
| EXPY | Termination of patent right or utility model |