CN201791571U - Lining plate for high chromium cast iron coal grinding mill - Google Patents
Lining plate for high chromium cast iron coal grinding mill Download PDFInfo
- Publication number
- CN201791571U CN201791571U CN2010205337095U CN201020533709U CN201791571U CN 201791571 U CN201791571 U CN 201791571U CN 2010205337095 U CN2010205337095 U CN 2010205337095U CN 201020533709 U CN201020533709 U CN 201020533709U CN 201791571 U CN201791571 U CN 201791571U
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- CN
- China
- Prior art keywords
- lining plate
- cast iron
- chromium cast
- liner plate
- grinding mill
- 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.)
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Abstract
The utility model relates to a lining plate for a high chromium cast iron coal grinding mill, which belongs to the field of machine manufacturing. A step-shaped groove is formed at the joint of the two adjacent lining plates; a carbon-steel mosaic block is inlaid on the inner side surface of the lining plate; and a plurality of conical through holes are formed at the middle part of the lining plate. After the wear-resistant high chromium cast iron lining plate is arranged, the running reliability, the running stability and the service life of the coal grinding mill are improved, and the maintenance load during the working process is low. Furthermore, the design of the high chromium cast iron lining plate is different from that of the traditional lining plate, and the installation of the high chromium cast iron lining plate is firmer, therefore the coal grinding mill is well protected, and the running process of the coal grinding mill is safer, more stable and efficient.
Description
Technical field
The utility model relates to a kind of liner plate that is used for the rich chromium cast iron coal pulverizer, belongs to mechanical manufacturing field.
Background technology
As the main consumable accessory of coal pulverizer, the anti-wear performance of liner plate and liner plate mounting stability can directly influence the safety and economic operation of boiler milling system.Related data shows, liner plate and material thereof that thermal power plant uses, and most important performance is a high rigidity, has only the material of high rigidity, could resist the fierceness wearing and tearing of dry grinding material.Liner plate high-abrasive material commonly used now is the potassium steel ZGMnl3 with fine plasticity, toughness and higher work hardening rate, this steel can bear greater impact load or contact stress makes the surface of the work abrasion hardness increase, but in actual moving process, the suffered impact load of this kind coal pulverizer liner plate is less, be difficult to bring into play its work hardening effect, in application process bigger rheology, crimping, flexural deformation can take place, cause the safety economy performance to reduce.In addition, the planform of liner plate and mounting means also be the key factor of decision coal pulverizer best operating condition, and the work of coal pulverizer is had very big influence.Liner plate various ways is installed, have every liner plate central punch bolting; What have uses bolting one at cylindrical shell 1/4 place; Wedge, fixator are tightened in the employing that also has.But all exist labour intensity big, downtime is long, problems such as stability and operational reliability difference are installed, and mounting process is comparatively complicated and changeable, not that bolt cooperates constant with the liner plate screw, make screw produce stress and concentrate, occur axis out of plumb and the crooked phenomenon of liner plate exactly, cause mutual top strength between liner plate cylindrical shell; Liner plate and cylindrical shell can not be fitted fully besides, indivedual positions occur built on stilts, thereby produce fracture when causing liner plate to be subjected to impacting in using, bolt also easily smashes or cut off, and considers from economy and point of view of practicability that therefore it is desirable that existing many coal pulverizer mounting means are all still owed.
Summary of the invention
The purpose of this utility model provides a kind of simple, practical liner plate that is used for the rich chromium cast iron coal pulverizer, after this rich chromium cast iron abrasion-proof backing block is installed, coal pulverizer work reliability of operation, stability and useful life all are improved, and the workload of maintaining is little in the course of work.
To achieve these goals, the utility model adopts following technical scheme: a kind of liner plate that is used for the rich chromium cast iron coal pulverizer, liner plate and liner plate joint are the grooves that is step-like, inlay the carbon steel mosaic block at the medial surface of liner plate, have several conical through-holes at the middle part of liner plate.
The contour structures of rich chromium cast iron abrasion-proof backing block is and the corresponding curved thin plate of coal pulverizer inner tube wall radian.In casting process, inlay carbon steel with contacted of inner tube wall, and guarantee carbon steel and the high strength bond of rich chromium cast iron when casting.
The utility model compared with prior art has following technological merit: after this rich chromium cast iron abrasion-proof backing block was installed, coal pulverizer work reliability of operation, stability and useful life all were improved, and the workload of maintaining is little in the course of work; In addition, also be different from traditional liner plate in the design of rich chromium cast iron foundry goods profile, liner plate is installed can be more firm, thereby can play the protection coal pulverizer, make coal pulverizer can be safer, stable, move efficiently.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
Do further narration below in conjunction with 1 pair of the utility model of accompanying drawing: a kind of liner plate that is used for the rich chromium cast iron coal pulverizer, liner plate and liner plate joint are the grooves 1 that is step-like, inlay carbon steel mosaic block 2 at the medial surface of liner plate, have several conical through-holes 3 at the middle part of liner plate.
Its mounting process is: being connected by " compacting " between the liner plate between liner plate and the liner plate, compress mutually in the mode of briquetting, to guarantee circumferentially closely connecting between the liner plate.Realize by the welding on the liner plate and between the inner core during being connected between liner plate and the coal pulverizer inner tube wall, and in order to guarantee the bonding strength between liner plate and the inner core, also by and inner core between weld, thereby guarantee the liner plate mounting stability.
Claims (1)
1. liner plate that is used for the rich chromium cast iron coal pulverizer, it is characterized in that: liner plate and liner plate joint are the grooves (1) that is step-like, inlay carbon steel mosaic block (2) at the medial surface of liner plate, have several conical through-holes (3) at the middle part of liner plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205337095U CN201791571U (en) | 2010-09-17 | 2010-09-17 | Lining plate for high chromium cast iron coal grinding mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205337095U CN201791571U (en) | 2010-09-17 | 2010-09-17 | Lining plate for high chromium cast iron coal grinding mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201791571U true CN201791571U (en) | 2011-04-13 |
Family
ID=43846491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205337095U Expired - Fee Related CN201791571U (en) | 2010-09-17 | 2010-09-17 | Lining plate for high chromium cast iron coal grinding mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201791571U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106216037A (en) * | 2016-08-31 | 2016-12-14 | 德清县东旭合金钢铸造有限公司 | A kind of lining plate structure in power plant coal pulverizer |
| CN106903283A (en) * | 2017-02-23 | 2017-06-30 | 中钢集团邢台机械轧辊有限公司 | The installation method and centrifuge end cap liner of centrifuge end cap liner |
-
2010
- 2010-09-17 CN CN2010205337095U patent/CN201791571U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106216037A (en) * | 2016-08-31 | 2016-12-14 | 德清县东旭合金钢铸造有限公司 | A kind of lining plate structure in power plant coal pulverizer |
| CN106903283A (en) * | 2017-02-23 | 2017-06-30 | 中钢集团邢台机械轧辊有限公司 | The installation method and centrifuge end cap liner of centrifuge end cap liner |
| CN106903283B (en) * | 2017-02-23 | 2019-09-24 | 中钢集团邢台机械轧辊有限公司 | The installation method and centrifuge end cap liner of centrifuge end cap liner |
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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: 20110413 Termination date: 20150917 |
|
| EXPY | Termination of patent right or utility model |