CN201496541U - Shaft sealing device of medium-speed coal mill - Google Patents
Shaft sealing device of medium-speed coal mill Download PDFInfo
- Publication number
- CN201496541U CN201496541U CN2009201881097U CN200920188109U CN201496541U CN 201496541 U CN201496541 U CN 201496541U CN 2009201881097 U CN2009201881097 U CN 2009201881097U CN 200920188109 U CN200920188109 U CN 200920188109U CN 201496541 U CN201496541 U CN 201496541U
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- China
- Prior art keywords
- main shaft
- shaft
- coal mill
- sealing ring
- fixed
- Prior art date
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- Crushing And Grinding (AREA)
Abstract
The utility model belongs to the accessory of coal mill, and particularly relates to a shaft sealing device capable of obviating powder leakage of the shaft of the medium-speed coal mill. One or more moving sealing rings is fixed on the outer circle of the shaft of the coal mill; a stationary sealing ring is sheathed outside the moving sealing rings; grooves are formed on the inner wall of the stationary sealing ring and is matched with the moving sealing rings; the space between the stationary sealing ring and the shaft of the coal mill is sealed; a gap is kept between the moving sealing ring and the stationary sealing ring; and the stationary sealing ring is pressed and fixed by a shaft flange and a press cover of the coal mill. The shaft sealing device has the advantages of reasonable structure, convenient installation, high safety, high resistance to abrasion and high temperature, and good anti-leakage effect, and can timely compensate for the eccentricity and gap of units, so that the shaft sealing device has positive effects in reaching standard of power enterprises and keeping clean site environment.
Description
[technical field]
The utility model belongs to the coal pulverizer accessory, particularly be to eliminate the shaft sealer that powder is leaked at medium-speed pulverizer main shaft place.
[background technique]
There is the problem of leaking coal dust at work in the medium-speed pulverizer that present power station is used, particularly the problem of the main shaft place of coal pulverizer leakage coal dust fails to solve always: existing coal pulverizer generally adopts copper coin sealing or carbon ring sealing, because copper coin is close and carbon ring lacks flexibility, can not in time compensate with the gap of main shaft, cause coal dust and sealing wind to leak outside, not only waste bunker coal, and coal dust flies upward, polluted environment, influenced the healthy of staff, also be enterprise's obstacle up to standard, anxious to be solved.
[model utility content]
Technical problem to be solved in the utility model is to provide a kind of can overcome the shaft sealer that the powder problem is leaked at medium-speed pulverizer main shaft place, avoids leakage of pulverized coal, thereby improves production environment.
The utility model solves the problems of the technologies described above by the following technical programs: the medium-speed pulverizer main shaft sealing device, comprise the flange plate that is sleeved on the coal pulverizer main shaft, described flange plate is fixed on the coal pulverizer gear box casing, on described coal pulverizer main shaft cylindrical, fix more than one dynamic seal ring, be covered with the static seal circle in described dynamic seal ring outside, the inwall of described static seal circle is provided with groove, described groove and described dynamic seal ring are complementary, seal between described static seal circle and the described coal pulverizer main shaft, and leave the gap between described dynamic seal ring and the described static seal circle; Described flange plate is connected with an annular gland by bolt, and described annular gland is sleeved on the described coal pulverizer main shaft, with described flange plate described static seal circle is fixed.
The utility model principle be adopt " be association of activity and inertia " and combined seal structure, dynamic seal ring is held therewith rotation on main shaft tightly, and the static seal circle is owing to be glanded with flange plate and be fixed transfixion.The sealing structure has good sealing effect, and can compensate well because the spindle eccentricity gap of causing, and dynamic seal ring do not contact with the static seal circle, so equipment does not produce wearing and tearing, long service life.
Further improvement as such scheme: be provided with the rubber ring that an outer wall has U-groove bevel between described static seal circle and the described gland, be provided with spring in the U-groove bevel of described rubber ring, described rubber ring is fixed on the described coal pulverizer main shaft by described spring; Described gland is installed in the U-groove bevel of described rubber ring, with described flange plate described rubber ring and described static seal circle is fixed.The rubber ring that increases newly is held tightly on the coal pulverizer main shaft by spring, so the gap is littler, can further improve sealing effect, also changes easily after the wearing and tearing.
Advantage of the present utility model is: the utility model is rational in infrastructure, and is easy for installation, safe, Wear-resistant, high-temperature resistant, and dustproof leak outside effective, for equipment off-centre, the gap can in time compensate, up to standard for electricity power enterprise, keep the site environment cleaning, can play positive role.
[description of drawings]
The utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings.
Figure one is the utility model embodiment one a structural representation,
Figure two is the utility model embodiment two a structural representation.
[embodiment]
Embodiment one:
Referring to accompanying drawing 1, the medium-speed pulverizer main shaft sealing device comprises the flange plate 4 that is sleeved on the coal pulverizer main shaft 1, and flange plate 4 is fixed in the copper coin 5 on the coal pulverizer gear box casing.Fix two dynamic seal ring 2 on coal pulverizer main shaft 1 cylindrical, be covered with static seal circle 3 in dynamic seal ring 2 outsides, the inwall of static seal circle 3 is provided with groove, and described groove and dynamic seal ring 2 are complementary.Sealing between static seal circle 3 and the coal pulverizer main shaft 1, and leave the gap between dynamic seal ring 2 and the static seal circle 3.Flange plate 4 is connected with an annular gland 9 by bolt 6, and gland 9 is sleeved on the coal pulverizer main shaft 1, with flange plate 4 static seal circle 3 is fixed.
It is identical with above-mentioned steps that static seal circle 3 is installed, and is that the Stamping Steel Ribbon of E shape covers dynamic seal ring 2 with the cross section, intercepts the suitable length bonding forming then.Gland 9 is installed then, bolt 6 is tightened to the appropriate location.If to static seal circle 3 press too tight, then static seal circle 3 is ineffective, Tai Song does not have sealing effect again.
Embodiment two:
Referring to accompanying drawing 2, be provided with the rubber ring 7 that an outer wall has U-groove bevel between described static seal circle and the described gland, be provided with spring 8 in the U-groove bevel of rubber ring 7, rubber ring 7 is fixed on the coal pulverizer main shaft 1 by spring 8; Gland 9 is installed in the U-groove bevel of rubber ring 7, with flange plate 4 rubber ring 7 and static seal circle 3 is fixed.Remaining part is identical with embodiment one.
Claims (3)
1. medium-speed pulverizer main shaft sealing device, comprise the flange plate that is sleeved on the coal pulverizer main shaft, described flange plate is fixed on the coal pulverizer gear box casing, it is characterized in that: be fixed with more than one dynamic seal ring on the described coal pulverizer main shaft cylindrical, be covered with the static seal circle in described dynamic seal ring outside, the inwall of described static seal circle is provided with groove, and described groove and described dynamic seal ring are complementary; Seal between described static seal circle and the described coal pulverizer main shaft, and leave the gap between described dynamic seal ring and the described static seal circle; Described flange plate is connected with a gland by bolt, and described gland is fixed described static seal circle with described flange plate.
2. according to the described medium-speed pulverizer main shaft sealing device of claim 1, it is characterized in that: described gland is sleeved on the described coal pulverizer main shaft for annular.
3. according to claim 1 or 2 each described medium-speed pulverizer main shaft sealing devices, it is characterized in that: be provided with the rubber ring that an outer wall has U-groove bevel between described static seal circle and the described gland, be provided with spring in the U-groove bevel of described rubber ring, described rubber ring is fixed on the described coal pulverizer main shaft by described spring; Described gland is installed in the U-groove bevel of described rubber ring, with described flange plate described rubber ring and described static seal circle is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201881097U CN201496541U (en) | 2009-10-10 | 2009-10-10 | Shaft sealing device of medium-speed coal mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201881097U CN201496541U (en) | 2009-10-10 | 2009-10-10 | Shaft sealing device of medium-speed coal mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201496541U true CN201496541U (en) | 2010-06-02 |
Family
ID=42439748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201881097U Expired - Fee Related CN201496541U (en) | 2009-10-10 | 2009-10-10 | Shaft sealing device of medium-speed coal mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201496541U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287532A (en) * | 2011-06-02 | 2011-12-21 | 陈福祥 | Angle saw-toothed sealing ring assembly for lower bracket of medium speed coal mill running in thermal power plant |
| CN102989569A (en) * | 2012-12-27 | 2013-03-27 | 天津鹰麟节能科技发展有限公司 | Millstone shaft sealing device of coal mill |
| CN103721795A (en) * | 2013-12-19 | 2014-04-16 | 马鞍山市荣亿密封材料有限责任公司 | Spindle air-sealing device of medium-speed mill |
-
2009
- 2009-10-10 CN CN2009201881097U patent/CN201496541U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287532A (en) * | 2011-06-02 | 2011-12-21 | 陈福祥 | Angle saw-toothed sealing ring assembly for lower bracket of medium speed coal mill running in thermal power plant |
| CN102989569A (en) * | 2012-12-27 | 2013-03-27 | 天津鹰麟节能科技发展有限公司 | Millstone shaft sealing device of coal mill |
| CN102989569B (en) * | 2012-12-27 | 2015-01-14 | 天津鹰麟节能科技发展有限公司 | Millstone shaft sealing device of coal mill |
| CN103721795A (en) * | 2013-12-19 | 2014-04-16 | 马鞍山市荣亿密封材料有限责任公司 | Spindle air-sealing device of medium-speed mill |
| CN103721795B (en) * | 2013-12-19 | 2015-09-16 | 马鞍山市荣亿密封材料有限责任公司 | A kind of medium-speed pulverizer main shaft air seal set |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20121010 |