CN201164808Y - Wear resistant coal-grinding roller - Google Patents
Wear resistant coal-grinding roller Download PDFInfo
- Publication number
- CN201164808Y CN201164808Y CNU2007203056786U CN200720305678U CN201164808Y CN 201164808 Y CN201164808 Y CN 201164808Y CN U2007203056786 U CNU2007203056786 U CN U2007203056786U CN 200720305678 U CN200720305678 U CN 200720305678U CN 201164808 Y CN201164808 Y CN 201164808Y
- Authority
- CN
- China
- Prior art keywords
- roller
- grinding roller
- roller core
- wearable
- coal grinding
- 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 relates to a wearable coal grinding roller and relates to a coal grinding roller of a coal grinding machine used in a fuel electric plant. The wearable coal grinding roller comprises a roller core and wearable layers, and the working outer surface of the roller core is of a drum shape. The wearable coal grinding roller is characterized in that the upper and the lower ends of the drum-shaped working surface are both provided with lug bosses; the wearable layers are welded on the outer working surface of the roller core and the lug bosses of the roller core in a piling way; the height of the wearable layers on the lug bosses is identical with that of the lug bosses of the roller core. In order to further improve the strength and the impact resistant performance of the wearable coal grinding roller of the utility model, a plurality of strengthening ribs which are parallel with the roller axes are evenly distributed on the inner wall of the roller core. Compared with the prior coal grinding roller, the coal grinding roller of the utility model reduces the cost, improves the strength and prolongs the service life, has good security performance and can be renovated repeatedly.
Description
(1) technical field
The utility model relates to the coal-grinding roller of the coal pulverizer that uses in a kind of thermal power plant.
(2) background technology
At present the coal-grinding roller that uses of thermal power plant has two kinds of structure types: a kind of structure type is the grinding roller that forms with the casting of high hardness wear-resisting material monolithic, and this casting grinding roller in use or take place easily in the built-up welding repair process to ftracture and cause a serious accident after wearing and tearing; Another kind of structure type is build-up wear-resistant alloy material and the composite grinding roll made on the roller core of ZG35 cast steel.The composite roll of this structure of using is easy to generate penetrating crack at the position of build-up wear-resistant alloy material now, and the wear resistant alloy material of built-up welding can come off in the bulk crushing in the use, has reduced the service life of coal-grinding roller.
(3) summary of the invention
The purpose of this utility model provides and is better than the conventional cast grinding roller a kind of service life, and cost low-intensity height, in use can effectively avoid the crushing of the cracking of grinding roller and build-up wear-resistant alloy material bulk to come off, guarantee the security of use, and can return the wear-resisting coal-grinding roller of multiple reparation.
The purpose of this utility model is realized by following mode:
Wear-resisting coal-grinding roller, comprise roller core and wearing layer, the outer working surface of roller core is a cydariform, it is characterized in that the cydariform working face all has boss up and down, the wearing layer built-up welding is on the outer working surface and roller core boss of roller core, and the wearing layer of built-up welding on boss is consistent with roller core boss height.
In order further to improve the intensity and the shock resistance of the wear-resisting coal-grinding roller of the utility model, also have on the roller core evenly to distribute and several reinforcements parallel with axis; Roller core upper and lower port inner surface and roller core axis have an angle.
The utility model has the advantages that: because the utility model is provided with boss on roller core, increased the built-up welding area, make wearing layer roller core than before be easy to welding, avoided wearing layer large tracts of land crushing in use to come off, also avoid the casting grinding roller that cracking takes place in the built-up welding repair process in use or after wearing and tearing easily and caused a serious accident, guaranteed the security of using; Reinforcement can increase its intensity, thereby has prolonged the service life of wear-resisting coal-grinding roller, and repairs easily.
(4) description of drawings
Fig. 1 is the cutaway view of the wear-resisting coal-grinding roller of the utility model;
Fig. 2 is the A-A profile of the wear-resisting coal-grinding roller of the utility model Fig. 1.
(5) specific embodiment
With reference to accompanying drawing 1, the wear-resisting coal-grinding roller of the utility model comprises roller core 1 and wearing layer 2; Roller core 1 usefulness ZG275-485HGB/T7659-1987 Welding Structure is cast with carbon steel and is formed, its outer working surface is that cydariform is characterized in that the cydariform working face all has boss 3 in two ends about in the of 5, wearing layer 2 usefulness wear resistant alloy material built-up welding are on the outer working surface 5 and roller core boss 3 of roller core 1, wearing layer height on the boss is consistent with roller core boss height, constitute complete wear-resisting coal-grinding roller, the inwall of this roller core also has equally distributed 8 reinforcements 4 parallel with axis, and roller core upper and lower port inner surface and roller core axis have an angle.
The wear-resisting coal-grinding roller of the utility model wearing layer is the wear resistant alloy material of built-up welding, and hardness is HRc58～62.Roller core is that ZG275-485H GB/T7659-1987 Welding Structure is cast with carbon steel and formed, and good welding performance is arranged, and shock resistance.Its life-span is 1.5 times of conventional cast coal-grinding roller, cost and monoblock cast grinding roller quite.Use as safe as a house, thoroughly eliminated coal-grinding roller that the high hardness material monoblock cast forms use and repair process in cracking takes place easily accident potential, reparation property will be much better than conventional cast coal-grinding roller, can realize returning multiple reparation and the security that do not influence use.
Claims (3)
1. wear-resisting coal-grinding roller comprises roller core and wearing layer, and the outer working surface of roller core is a cydariform, it is characterized in that the cydariform working face all has boss in both sides up and down, and the wearing layer built-up welding is on the outer working surface and roller core boss of roller core, and is consistent with roller core boss height.
2. wear-resisting coal-grinding roller according to claim 1 is characterized in that roller core inwall several reinforcements parallel with axis that also evenly distribute.
3. wear-resisting coal-grinding roller according to claim 1 is characterized in that roller core upper and lower port inner surface and roller core axis have an angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203056786U CN201164808Y (en) | 2007-11-29 | 2007-11-29 | Wear resistant coal-grinding roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203056786U CN201164808Y (en) | 2007-11-29 | 2007-11-29 | Wear resistant coal-grinding roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201164808Y true CN201164808Y (en) | 2008-12-17 |
Family
ID=40190191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007203056786U Expired - Fee Related CN201164808Y (en) | 2007-11-29 | 2007-11-29 | Wear resistant coal-grinding roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201164808Y (en) |
-
2007
- 2007-11-29 CN CNU2007203056786U patent/CN201164808Y/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: 20081217 Termination date: 20141129 |
|
| EXPY | Termination of patent right or utility model |