CN202191933U - Stationary ring of rotating nozzle of medium-speed coal mill - Google Patents
Stationary ring of rotating nozzle of medium-speed coal mill Download PDFInfo
- Publication number
- CN202191933U CN202191933U CN2011202772982U CN201120277298U CN202191933U CN 202191933 U CN202191933 U CN 202191933U CN 2011202772982 U CN2011202772982 U CN 2011202772982U CN 201120277298 U CN201120277298 U CN 201120277298U CN 202191933 U CN202191933 U CN 202191933U
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- CN
- China
- Prior art keywords
- stationary ring
- parent body
- abrasion
- resistant block
- medium
- 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 - Lifetime
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Abstract
The utility model relates to a stationary ring of a rotating nozzle of a medium-speed coal mill. The stationary ring comprises a stationary ring parent body; a gap is arranged at one side of the stationary ring parent body; a plurality of vertical ribs are arranged in the gap; a mounting groove is arranged at the other side of the stationary ring parent body; a positioning groove is arranged at the lower end of the mounting groove; a plurality of abrasion-resistant blocks are arranged in the mounting groove; the lower end of each abrasion-resistant block is embedded in the positioning groove; the upper end of each abrasion-resistant block is fixedly connected with the stationary ring parent body through a screw bolt; screw bolt protecting caps are arranged on the inside wall of the gap of the stationary ring parent body corresponding to the screw bolts; and the surface of each abrasion-resistant block and the surface of the stationary ring parent body at the mounting side of the abrasion-resistant block form a smooth curved surface. The stationary ring of rotating nozzle of the medium-speed coal mill has the beneficial effects that the inside surface of the stationary ring adopts the abrasion-resistant blocks, therefore, the service life of the stationary ring as a whole can be prolonged; the inside surface of the stationary ring is composed of the plurality of abrasion-resistant blocks, therefore, the stationary ring is convenient to disassemble/assemble; the vertical ribs can improve the strength of the stationary ring parent body, and can lower the weight of the stationary ring parent body; due to the included angles between the upper and lower ends of the stationary ring parent body and the horizontal plane, the resistance of a primary air inlet can be lowered, and the stacking of a lot of solids is avoided; and the screw bolt protecting caps can prolong the service lives of the screw bolts.
Description
Technical field
The utility model relates to the medium-speed pulverizer field, particularly a kind of medium-speed pulverizer swivel nozzle stationary ring.
Background technology
Medium-speed pulverizer swivel nozzle stationary ring project organization is whole circular both at home and abroad at present, and stationary ring is fixed on the casing inner wall, between stationary ring internal diameter and the swivel nozzle external diameter certain interval is arranged; A wind gets in the mill through this gap and nozzle vane during the coal pulverizer operation, is thrown out of after the raw coal in the mill rolls through grinding roller and moves to jet expansion top, and large coal particles is getting under the gravity effect between the dynamic and static ring; Because swivel nozzle moves with respect to stationary ring; Bulky grain will cause wearing and tearing to stationary ring, produce often that stationary ring is worn through phenomenon, thereby influence the coal pulverizer operation; Owing to be overall structure; Must separator, pressure frame, grinding roller etc. be hung out in grinding during replacing, workload is very big, and cost is very high.For example, application number is 200720182810.9 the patent name patent for " thermal power plant medium-speed pulverizer swivel nozzle ", only the structure of rotating ring is improved, and the structure of stationary ring is not done improvement, said problem above product still exists.
The utility model content
The purpose of the utility model provides a kind of medium-speed pulverizer swivel nozzle stationary ring, can effectively prolong the stationary ring bulk life time, and convenient maintenance and dismounting reduce operation and recondition expense.
The purpose of the utility model is to realize through following technical scheme:
A kind of medium-speed pulverizer swivel nozzle stationary ring comprises the stationary ring parent, and said stationary ring parent one side has breach; Be provided with some studs in the breach; Stationary ring parent opposite side is provided with mounting groove, and the mounting groove lower end is provided with locating slot, is provided with some wear-resistant blocks in the mounting groove; The wear-resistant block lower end embeds locating slot, and the wear-resistant block upper end is fixedly connected with the stationary ring parent.
Said wear-resistant block upper end is connected with the stationary ring parent through bolt, is provided with the bolt guard shield with the bolt corresponding position on the stationary ring parent breach inwall, and wear-resistant block also can make otherwise and be connected with the stationary ring parent.
Said wear-resistant block surface constitutes smooth surface with the stationary ring parent surface of its installation side.
The beneficial effect of the utility model is: 1, the stationary ring inner surface adopts wear-resistant block can effectively prolong the stationary ring bulk life time; 2, some wear-resistant blocks constitute stationary ring inner surface, easy disassembly; 3, stud can be strengthened stationary ring parent intensity and reduce stationary ring parent weight; 4, the angle of stationary ring parent upper/lower terminal and horizontal plane can reduce a wind inlet resistance and avoid a large amount of solids to pile up; 5, the bolt guard shield can prolong bolt life.
Description of drawings
According to accompanying drawing the utility model is done further explain below.
Fig. 1 is the structural representation of the described medium-speed pulverizer swivel nozzle of the utility model embodiment stationary ring.
Among the figure:
1, stationary ring parent; 101, breach; 102, stud; 103, mounting groove; 104, locating slot; 2, wear-resistant block; 3, bolt; 4, bolt guard shield.
The specific embodiment
As shown in Figure 1, the described a kind of medium-speed pulverizer swivel nozzle stationary ring of the utility model embodiment comprises stationary ring parent 1; Said stationary ring parent 1 one sides have breach 101, are provided with some studs 102 in the breach 101, and stationary ring parent 1 opposite side is provided with mounting groove 103; Mounting groove 103 lower ends are provided with locating slot 104; Be provided with some wear-resistant blocks 2 in the mounting groove 103, wear-resistant block 2 lower ends embed locating slot 104, and wear-resistant block 2 upper ends are fixedly connected with stationary ring parent 1.Said wear-resistant block 2 upper ends are connected with stationary ring parent 1 through bolt 3, are provided with bolt guard shield 4 with bolt 3 corresponding positions on stationary ring parent 1 breach 101 inwalls, and bolt guard shield 4 is the structures that design in order to prevent bolt 3 from being blown off.Said wear-resistant block 2 surfaces constitute smooth surface with stationary ring parent 1 surface of its installation side.
During use, if the medium-speed pulverizer swivel nozzle produces wearing and tearing, what then at first be worn is wear-resistant block 2, at this moment only wear-resistant block 2 is hung out replacing and gets final product, and need whole stationary ring not hung out, thereby greatly reduce maintenance and maintenance cost.
Can find out from above scheme: 1, the stationary ring inner surface adopts wear-resistant block can effectively prolong the stationary ring bulk life time; 2, some wear-resistant blocks constitute stationary ring inner surface, easy disassembly; 3, stud can be strengthened stationary ring parent intensity and reduce stationary ring parent weight; 4, the angle of stationary ring parent upper/lower terminal and horizontal plane can reduce a wind inlet resistance and avoid a large amount of solids to pile up; 5, the bolt guard shield can prolong bolt life.
The utility model is not limited to above-mentioned preferred forms; Anyone can draw other various forms of products under the enlightenment of the utility model; No matter but on its shape or structure, do any variation; Every have identical with a application or akin technical scheme, all drops within the protection domain of the utility model.
Claims (3)
1. medium-speed pulverizer swivel nozzle stationary ring; Comprise stationary ring parent (1); It is characterized in that: said stationary ring parent (1) one side has breach (101), is provided with some studs (102) in the breach (101), and stationary ring parent (1) opposite side is provided with mounting groove (103); Mounting groove (103) lower end is provided with locating slot (104); Be provided with some wear-resistant blocks (2) in the mounting groove (103), wear-resistant block (2) lower end embeds locating slot (104), and wear-resistant block (2) upper end is fixedly connected with stationary ring parent (1).
2. medium-speed pulverizer swivel nozzle stationary ring according to claim 1; It is characterized in that: said wear-resistant block (2) upper end is connected with stationary ring parent (1) through bolt (3), is provided with bolt guard shield (4) with bolt (3) corresponding position on breach (101) inwall of stationary ring parent (1).
3. medium-speed pulverizer swivel nozzle stationary ring according to claim 1 and 2 is characterized in that: said wear-resistant block (2) surface constitutes smooth surface with stationary ring parent (1) surface of wear-resistant block (2) installation side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202772982U CN202191933U (en) | 2011-08-02 | 2011-08-02 | Stationary ring of rotating nozzle of medium-speed coal mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202772982U CN202191933U (en) | 2011-08-02 | 2011-08-02 | Stationary ring of rotating nozzle of medium-speed coal mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202191933U true CN202191933U (en) | 2012-04-18 |
Family
ID=45946865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202772982U Expired - Lifetime CN202191933U (en) | 2011-08-02 | 2011-08-02 | Stationary ring of rotating nozzle of medium-speed coal mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202191933U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112958224A (en) * | 2021-01-27 | 2021-06-15 | 郭瑜 | Rotary nozzle dynamic and static ring structure of coal mill |
| CN113908930A (en) * | 2021-09-26 | 2022-01-11 | 浙江浙能乐清发电有限责任公司 | HP type coal mill |
-
2011
- 2011-08-02 CN CN2011202772982U patent/CN202191933U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112958224A (en) * | 2021-01-27 | 2021-06-15 | 郭瑜 | Rotary nozzle dynamic and static ring structure of coal mill |
| CN113908930A (en) * | 2021-09-26 | 2022-01-11 | 浙江浙能乐清发电有限责任公司 | HP type coal mill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120418 |
|
| CX01 | Expiry of patent term |