CN201265649Y - Stationary ring for coal mill - Google Patents
Stationary ring for coal mill Download PDFInfo
- Publication number
- CN201265649Y CN201265649Y CNU2008201227811U CN200820122781U CN201265649Y CN 201265649 Y CN201265649 Y CN 201265649Y CN U2008201227811 U CNU2008201227811 U CN U2008201227811U CN 200820122781 U CN200820122781 U CN 200820122781U CN 201265649 Y CN201265649 Y CN 201265649Y
- Authority
- CN
- China
- Prior art keywords
- stationary ring
- ring body
- protection apron
- working surface
- groove
- 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
Links
- 239000003245 coal Substances 0.000 title claims abstract description 24
- 239000011253 protective coating Substances 0.000 claims description 7
- 230000000295 complement effect Effects 0.000 claims description 3
- 239000003082 abrasive agent Substances 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 5
- 239000011241 protective layer Substances 0.000 abstract 2
- 239000002817 coal dust Substances 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Crushing And Grinding (AREA)
Abstract
The utility model relates to a stationary ring for a coal mill, which comprises a stationary ring body, wherein the working surface of the stationary ring body is provided with a protective layer which is formed by splicing a plurality of protective plates arrayed along the circumferential direction of the stationary ring. The protective layer which is formed by splicing a plurality of protective plates is arranged on the working surface of the stationary ring body, the stationary ring can be replaced by replacing the attrited protective plates in the coal mill, without the necessity of replacing the whole stationary ring by using a lifting device so as to be convenient for future maintenance; in addition, when the stationary ring is replaced, the whole stationary ring does not need to be replaced, and only the protective plates on the serious damage position of the stationary ring needs to be disassembled and replaced to increase the utilization ratio of spare parts.
Description
Technical field
The utility model relates to a kind of seal arrangement, refers to a kind of coal pulverizer stationary ring especially.
Background technique
Present coal pulverizer is revealed away in coal pulverizer in order to prevent coal dust, and coal pulverizer is provided with stationary ring between superstructure and substructure, is used for preventing that coal dust course of conveying from top to bottom is leaked to the coal pulverizer outside.Stationary ring in the existing coal pulverizer is an integral ring-shaped structure, like this, when stationary ring appearance wearing and tearing need to change, must earlier superstructure be unloaded with large-scale hanging device, stationary ring could be taken out then, wastes time and energy.
The model utility content
At the problem that prior art exists, the utility model provides a kind of need not take out the stationary ring that can keep in repair its abrading section quickly and easily with stationary ring integral body from coal pulverizer.
For achieving the above object, a kind of coal pulverizer stationary ring of the utility model comprises the stationary ring body, and the working surface of stationary ring body is provided with protective coating, and this protective coating is spliced by some protection aprons along the stationary ring circumferential array.
Further, described protective coating is arranged on the position easy to wear on the working surface of stationary ring body.
Further, described stationary ring body middle part is along a groove circumferentially is set, the concave surface of this groove is vertical mutually with the working surface of described stationary ring body, described protection apron bottom plug-in mounting is gone in the groove, top is fixed on the stationary ring body, and the surface of described protection apron and described groove are in same plane with the stationary ring body working surface of bottom.
Further, described protection apron is made by high-abrasive material, and the bottom of protection apron is provided with the projection that at least one and described groove are complementary.
A kind of coal pulverizer of the utility model is provided with the protective coating that is spliced by the polylith protection apron with stationary ring on the working surface of stationary ring body, stationary ring only needs the attendant to arrive replacing protection apron in the coal pulverizer when changing, need not to change whole stationary ring, made things convenient for maintenance in the future with hanging device.In addition, when changing stationary ring, only the protection apron at serious wear position need be disassembled and change, need not to change whole stationary ring, improve the utilization ratio of spare part.
Description of drawings
Fig. 1 is the utility model stationary ring body and protection apron connection diagram;
Fig. 2 is the utility model stationary ring body structure schematic representation;
Fig. 3 is the utility model protection apron structural representation.
Embodiment
As Figure 1-3; a kind of coal pulverizer stationary ring of the utility model; comprise stationary ring body 3 and protection apron 4; stationary ring body 3 is fixed between coal pulverizer upper mechanism 1 and the lower mechanisms 2; the middle part of the working surface 32 of stationary ring body 3 is along a groove 31 circumferentially is set; the working surface 32 of the concave surface of groove 31 and stationary ring body is orthogonal; the working surface 32 of stationary ring body 3 for coal pulverizer from coal dust and stationary ring body 3 contacted surfaces that substructure 2 is blown over; if protection apron 4 is wanted directly to be inserted on the stationary ring body 3; just need add man-hour with the bottom surface of protection apron 4 be arranged to match with groove 31 shapes circular-arc; the difficulty of processing and the cost of protection apron 4 have been improved; therefore protection apron 4 bottoms are provided with two projectioies 41 that are complementary with groove 31; making two projectioies 41 of protection apron 4 be inserted in the groove 31 of stationary ring body 3 can be fixed on protection apron 4 on the stationary ring body 3; cover whole stationary ring body 3 or only cover its surface easy to wear along the protection apron 4 of groove 31 plug-in mounting protection aprons 4 then until assembly unit; because the stationary ring in use abrasion condition at each position has nonuniformity; the surface easy to wear of this stationary ring body 3 mainly is distributed near the jet expansion of wind intake grill with top; therefore only need protection apron 4 to be set and just can effectively protect stationary ring body 3, reduced cost on the surface easy to wear of stationary ring body 3.The surface of the protection apron 4 after fixing and the stationary ring body working surface 32 of groove 31 bottoms are in same plane, and protection apron 4 tops can be welded on the stationary ring body 3 or with bolt and connect to improve the stability between protection apron 4 and the stationary ring body 3.
Can adopt multiple Placement between stationary ring body 3 and the protection apron 4, can make stationary ring body 3 and protection apron 4 upper and lower end all with welding or bolted mode, also protection apron 4 bottoms can be inserted on the stationary ring body 3, screw hole employing screw be set at stationary ring body 3 and protection apron 4 middle parts.
A kind of stationary ring for coal mill of the utility model is provided with protection at stationary ring body working face Layer is because overcoat adopts segmentation structure to be spliced to form by the polylith protective plate, in maintenance, more Only need when changing several sections protective plates of serious wear are changed, need not the integral replacing stationary ring, saved Goods and materials have improved the utilization rate of spare part. The characteristics of the utility model stationary ring for coal mill maximum are Need not dismantle the coal pulverizer upper mechanism, namely replaceable in mill body, greatly shortened the repair time, For power plant's continuous operation provides safeguard. And in the maintenance process, fee of material, labour cost, handling Take also and significantly reduce, reduced the inspection and maintenance cost.
Claims (4)
1. a coal pulverizer stationary ring comprises the stationary ring body, it is characterized in that, the working surface of stationary ring body is provided with protective coating, and this protective coating is spliced by some protection aprons along the stationary ring circumferential array.
2. coal pulverizer stationary ring as claimed in claim 1 is characterized in that, described protective coating is arranged on the position easy to wear on the working surface of stationary ring body.
3. coal pulverizer stationary ring as claimed in claim 1 or 2, it is characterized in that, described stationary ring body middle part is along a groove circumferentially is set, the concave surface of this groove is vertical mutually with the working surface of described stationary ring body, described protection apron bottom plug-in mounting is gone in the groove, top is fixed on the stationary ring body, and the surface of described protection apron and described groove are in same plane with the stationary ring body working surface of bottom.
4. coal pulverizer stationary ring as claimed in claim 3 is characterized in that described protection apron is made by high-abrasive material, and the bottom of protection apron is provided with the projection that at least one and described groove are complementary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201227811U CN201265649Y (en) | 2008-09-28 | 2008-09-28 | Stationary ring for coal mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201227811U CN201265649Y (en) | 2008-09-28 | 2008-09-28 | Stationary ring for coal mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201265649Y true CN201265649Y (en) | 2009-07-01 |
Family
ID=40832016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201227811U Expired - Fee Related CN201265649Y (en) | 2008-09-28 | 2008-09-28 | Stationary ring for coal mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201265649Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956827A (en) * | 2010-05-26 | 2011-01-26 | 南车戚墅堰机车有限公司 | Repairing method of integration box plane seal groove leakages |
-
2008
- 2008-09-28 CN CNU2008201227811U patent/CN201265649Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956827A (en) * | 2010-05-26 | 2011-01-26 | 南车戚墅堰机车有限公司 | Repairing method of integration box plane seal groove leakages |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING JIADE GUONENG POWER TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: WU JUNMING Effective date: 20100205 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20100205 Address after: Room B1109, Century Economic & Trade Building, 72 West Third Ring Road, Beijing, Haidian District, China: 100048 Patentee after: Beijing fine German Power Technology Co., Ltd. Address before: No. 3, building 131, Lane 102488, Xinjian village, Fangshan District, Beijing, China Patentee before: Wu Junming |
|
| DD01 | Delivery of document by public notice |
Addressee: Li He Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Li He Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090701 Termination date: 20100928 |