CN207131852U - Coal pulverizer hot blast pitch spindle nose sealing structure - Google Patents
Coal pulverizer hot blast pitch spindle nose sealing structure Download PDFInfo
- Publication number
- CN207131852U CN207131852U CN201720778288.4U CN201720778288U CN207131852U CN 207131852 U CN207131852 U CN 207131852U CN 201720778288 U CN201720778288 U CN 201720778288U CN 207131852 U CN207131852 U CN 207131852U
- Authority
- CN
- China
- Prior art keywords
- hot blast
- spindle nose
- sealing structure
- coal pulverizer
- seal receptacle
- 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
It the utility model is related to a kind of coal pulverizer hot blast pitch spindle nose sealing structure, for sealed socket sleeve in the outside of heatproof packing and to sealing, the inner side that axle is pressed close in the upper end of seal receptacle is provided with annular slope, and the V-shaped seal ring for being close to axle outer wall is provided with the annular slope；The lower end tip of the V-shaped seal ring is towards hot blast direction, and the portion of holding level with both hands is pressed with pressing plate on V-shaped seal ring.The utility model good airproof performance, service life are long, easy for installation.
Description
Technical field
It the utility model is related to a kind of sealing device, specifically coal pulverizer hot blast pitch spindle nose sealing structure.
Background technology
In the medium-speed pulverizer system of existing operation, it is a ratio that coal pulverizer hot blast pitch shaft head seal, which leaks out, leaks powder,
The problem of more typical, certain economic loss is both caused to power plant, disturb power plant again and carry out production strictly in line with rules and regulations.Serious pollution week
Collarette border, turn into thermal power generation corporations and all put forth effort on the problem of to be solved.
Above-mentioned to leak out, leak powder main cause be that selected sealing structure is generally deficient of elasticity, it is impossible to timely compensates gap；
Plus coal pulverizer hot blast pitch spindle nose long-play, cause the concentricity of door-hinge and seal casinghousing not on a center.Mesh
It is preceding in the industry in process of production generally use packing as encapsulant.Unit in the process of running, due to hot blast pitch spindle nose
It is poorly sealed to cause hot blast leakage to cause factory building environment pollution.Seriously leak out, leak ash or even cause device damage, Zhi Nengting
Fortune maintenance, has severely impacted the stable operation of unit.
CN201521124022.5 Chinese patents are related to a kind of controller of coal mill of boiler hot air isolating door door spindle sealing device, card
The try to get to the heart of a matter rear portion of seat sets conical seal ring, and the rear portion of the conical seal ring sets circular seal chuck, circular seal chuck
Neighboring set external screw thread, be connected with the internal thread at chuck base rear portion, seal chuck inside setting bellmouth, bellmouth
Inner rim and the neighboring of conical seal ring coordinate, the packing inside the Dew Point welds with Dew Point in Dew Point
Formation of sealing component is made before connecing, the utility model effectively eliminates isolation door and leaked out the problem of grey, ensure that the stabilization of equipment
Safe operation.But above-mentioned technical proposal is not improved and solved for compensation gap, concentricity issues.
The content of the invention
The utility model is existing to solve the problems, such as, it is desirable to provide a kind of coal pulverizer hot blast pitch spindle nose sealing structure.
In order to achieve the above object, the technical solution adopted in the utility model includes support base and positioned at support base center
Axle, is cased with heatproof packing on axle, and there is a hot blast both sides of axle, in addition to seal receptacle above support base, V-shaped seal ring and
Pressing plate, for sealed socket sleeve in the outside of heatproof packing and to sealing, the inner side that axle is pressed close in the upper end of seal receptacle is provided with annular slope,
The V-shaped seal ring for being close to axle outer wall is provided with the annular slope；The lower end tip of the V-shaped seal ring is towards hot blast direction, V
The portion of holding level with both hands is pressed with pressing plate on type sealing ring.
Wherein, backing plate is provided between the bottom of seal receptacle and support base.
Wherein, O-ring seal is provided between the bottom of seal receptacle and backing plate.
Wherein, it is fixedly connected between the bottom of seal receptacle and backing plate by hold-down bolt.
Wherein, the outer wall of seal receptacle is provided with the fixed pressure ring of annular.
Wherein, the upper end of pressing plate and the seal receptacle is bolted.
Wherein, the lateral of seal receptacle is additionally provided with the guide ring that can import cold wind.
Compared to the prior art, the utility model good airproof performance, service life are long, easy for installation；Pass through seal receptacle, V-type
The tight structure of sealing ring and pressing plate, for preventing hot blast pitch shaft head seal wind, dust from leaking outside, there is good sealing
Property；The special V-shaped seal ring of moulding can fill up gap；Backing plate can improve the stability of seal receptacle, keep concentricity；It is O-shaped
Sealing ring can reduce the frictional dissipation between the bottom of seal receptacle and backing plate；Fixed pressure ring improves the stabilization of sealing holder structure
Property；Clean environment is kept for power plant, achieve the first class up to standard and raising productivity ratio, energy-saving etc. are significant.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model one embodiment.
Embodiment
In conjunction with accompanying drawing, the utility model is further described.
Referring to Fig. 1, Fig. 1 shows one embodiment of the present utility model, including support base 12 and positioned at support base 12
The axle 13 in center, heatproof packing 4 is cased with axle 13.There is an air channel of hot blast the both sides of axle 13, and the hot blast in air channel rises.Also wrap
Include seal receptacle 5, V-shaped seal ring 2 and pressing plate 1 located at the top of support base 12, seal receptacle 5 is enclosed on the outside of heatproof packing 4 and right
Axle 13 seals, and is tightly contacted with axle 13；The inner side that axle 13 is pressed close in the upper end of seal receptacle 5 is provided with annular slope, in annular slope
It is caught in the V-shaped seal ring 2 for being close to the outer wall of axle 13；The lower end tip of V-shaped seal ring is towards hot blast direction, the upper end of V-shaped seal ring
Flat portion is pressed with pressing plate.V-shaped seal ring 2 can supplement gap rapidly, prevent the intrusion of hot blast, dust.
Wherein, the outer wall of seal receptacle 5 is provided with the fixed pressure ring 3 of annular, and the stabilization of the structure of seal receptacle 5 is improved from outside
Property.
Preferably, being provided with backing plate 9 between the bottom of seal receptacle 5 and support base 12, backing plate 9 can improve the steady of seal receptacle
It is qualitative, keep concentricity.O-ring seal 11 is further provided between the bottom of seal receptacle 5 and backing plate 9, O-ring seal 11 can
The frictional dissipation between the bottom of seal receptacle 5 and backing plate 9 is reduced, improves service life.
Preferably, it is fixedly connected between the bottom of seal receptacle 5 and backing plate 9 by some hold-down bolts 6.The He of pressing plate 1
If the upper end of seal receptacle 5 is connected by bolt stem 7.Connection can further ensure concentricity at two so that whole sealing structure
It is more stable.
Wherein, the lateral of seal receptacle 5 is additionally provided with the guide ring 8 that can import cold wind, and introducing port is provided with connector 10, Ke Yishi
Now outer give a dinner for a visitor from afar is protected with the static pressure risen between hot blast of coal pulverizer.
Said structure can preferably elasticity be good, seals the high Compound rubber of close, high temperature resistant, wearing coefficient, Jin Erbao
The present embodiment nothing in 1 year is demonstrate,proved to leak out, leak powder, leakage.
Embodiment of the present utility model is described above in conjunction with drawings and Examples, the structure that embodiment provides not structure
Paired limitation of the present utility model, those skilled in the art in the art can be according to needing to adjust, in appended claims
In the range of make various deformations or amendments in protection domain.
Claims (7)
1. a kind of coal pulverizer hot blast pitch spindle nose sealing structure, including support base and the axle positioned at support base center, it is cased with axle
There is hot blast heatproof packing, the both sides of axle, it is characterised in that：Also include seal receptacle, V-shaped seal ring and the pressure above support base
Plate, for sealed socket sleeve in the outside of heatproof packing and to sealing, the inner side that axle is pressed close in the upper end of seal receptacle is provided with annular slope, institute
State the V-shaped seal ring for being provided with annular slope and being close to axle outer wall；
The lower end tip of the V-shaped seal ring is towards hot blast direction, and the portion of holding level with both hands is pressed with pressing plate on V-shaped seal ring.
A kind of 2. coal pulverizer hot blast pitch spindle nose sealing structure according to claim 1, it is characterised in that：The bottom of seal receptacle
Backing plate is provided between portion and support base.
A kind of 3. coal pulverizer hot blast pitch spindle nose sealing structure according to claim 2, it is characterised in that：The bottom of seal receptacle
O-ring seal is provided between portion and backing plate.
A kind of 4. coal pulverizer hot blast pitch spindle nose sealing structure according to Claims 2 or 3, it is characterised in that：Seal receptacle
Bottom and backing plate between be fixedly connected by hold-down bolt.
A kind of 5. coal pulverizer hot blast pitch spindle nose sealing structure according to claim 1, it is characterised in that：Outside seal receptacle
Wall is provided with the fixed pressure ring of annular.
A kind of 6. coal pulverizer hot blast pitch spindle nose sealing structure according to claim 1, it is characterised in that：Pressing plate and described
The upper end of seal receptacle is bolted.
A kind of 7. coal pulverizer hot blast pitch spindle nose sealing structure according to claim 1, it is characterised in that：The side of seal receptacle
To being additionally provided with the guide ring that can import cold wind.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720778288.4U CN207131852U (en) | 2017-06-30 | 2017-06-30 | Coal pulverizer hot blast pitch spindle nose sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720778288.4U CN207131852U (en) | 2017-06-30 | 2017-06-30 | Coal pulverizer hot blast pitch spindle nose sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207131852U true CN207131852U (en) | 2018-03-23 |
Family
ID=61632379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720778288.4U Expired - Fee Related CN207131852U (en) | 2017-06-30 | 2017-06-30 | Coal pulverizer hot blast pitch spindle nose sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207131852U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113309896A (en) * | 2021-06-11 | 2021-08-27 | 安徽玉龙电力科技有限公司 | Improved generation coal pulverizer hot-blast accent door spindle nose seal structure |
-
2017
- 2017-06-30 CN CN201720778288.4U patent/CN207131852U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113309896A (en) * | 2021-06-11 | 2021-08-27 | 安徽玉龙电力科技有限公司 | Improved generation coal pulverizer hot-blast accent door spindle nose seal structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180323 Termination date: 20180630 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |