CN205587124U - Coal pulverizer sealing device with reduce coal pulverizer air leakage coefficient function - Google Patents
Coal pulverizer sealing device with reduce coal pulverizer air leakage coefficient function Download PDFInfo
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- CN205587124U CN205587124U CN201620367120.XU CN201620367120U CN205587124U CN 205587124 U CN205587124 U CN 205587124U CN 201620367120 U CN201620367120 U CN 201620367120U CN 205587124 U CN205587124 U CN 205587124U
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- Prior art keywords
- coal pulverizer
- air leakage
- leakage coefficient
- coefficient function
- labyrinth
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- 239000003245 coal Substances 0.000 title claims abstract description 65
- 238000007789 sealing Methods 0.000 title claims abstract description 56
- 210000000515 tooth Anatomy 0.000 claims abstract description 34
- 230000009467 reduction Effects 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model relates to a coal pulverizer sealing device with reduce coal pulverizer air leakage coefficient function, including maze and sealed tooth, be provided with a plurality of labyrinth teeths on the maze, install elastic sealing plate on the sealed tooth, elastic sealing plate with the labyrinth teeth carries out clearance fit, forms seal structure, the utility model discloses a coal pulverizer sealing device with reduce coal pulverizer air leakage coefficient function, sealing device have fully absorbed the upper and lower of coal pulverizer barrel in operation and have controlled the displacement volume, and the sealed clearance of elastic sealing plate and labyrinth teeth reduces and is not more than 1mm, remain sealed clearance and air leakage throughout in lower level, can, reduce by 0.3 with air leakage coefficient to the coal pulverizer of difference0.5 sealing device's change and easy maintenance.
Description
Technical field
This utility model relates to a kind of coal chemical industry fine coal processing production equipment field, particularly relates to a kind of coal pulverizer sealing device having and reducing coal pulverizer air leakage coefficient function.
Background technology
Big with coal pulverizer watt of the ball type pulverizer system coal pulverizer gateway hollow axle coordinates rotary apparatus for sound, and the factor rocked in operating due to low speed coal mill, its device gap is generally individually at 20-40mm.So owing to coal pulverizer inlet and outlet negative pressure are respectively at-500Pa and about-4000Pa, therefore affect inleakage relatively big, cause the actual air leakage coefficient of pulverized coal preparation system to reach more than 0.5, affect pulverized coal preparation system drying capacity and reduce and the rising of exhaust gas temperature.Owing to administering difficulty, therefore the ball type pulverizer system big problem of leaking out does not has been resolved always.
Utility model content
For solving above-mentioned technical problem, the purpose of this utility model is to provide a kind of coal pulverizer sealing device that can reduce coal pulverizer air leakage coefficient, be convenient for changing and keep in repair.
A kind of coal pulverizer sealing device with reduction coal pulverizer air leakage coefficient function of the present utility model, including labyrinth and sealing tooth, some labyrinth teeths it are provided with on described labyrinth, on described sealing tooth, elastic sealing strip is installed, described elastic sealing strip and described labyrinth teeth carry out matched in clearance, are formed and seal structure.
Further, between described elastic sealing strip and described labyrinth teeth seal clearance be not more than 1mm.
Further, the thickness of described elastic sealing strip is 2mm.
Further, described a kind of have the coal pulverizer sealing device reducing coal pulverizer air leakage coefficient function according to the size of the diameter of hollow axle along the circumferential direction, is 45 ° or 60 ° or 90 ° of installation according to interval angles between parts, assembles sealing.
Further, described labyrinth progression increase with the increase of the spacing of standing part according to coal pulverizer rotating part.
Further, described labyrinth is arranged on the cylinder of coal pulverizer, and described sealing tooth is arranged on hollow axle.
By such scheme, this utility model at least has the advantage that 1, sealing device fully absorbed in the operating of coal pulverizer cylinder up and down and left and right displacement amount, elastic sealing strip narrows down to no more than 1mm with the seal clearance of labyrinth teeth, remains that seal clearance and inleakage are in relatively low level；2, to different coal pulverizers, air leakage coefficient can be reduced 0.3-0.5；3, the replacing of sealing device is with easy to maintenance.
Described above is only the general introduction of technical solutions of the utility model, in order to better understand technological means of the present utility model, and can be practiced according to the content of description, below with preferred embodiment of the present utility model and coordinate accompanying drawing describe in detail as after.
Accompanying drawing explanation
Fig. 1 is a kind of labyrinth design of part figure with the coal pulverizer sealing device reducing coal pulverizer air leakage coefficient function of the present utility model；
Fig. 2 is a kind of sealing tooth design of part figure with the coal pulverizer sealing device reducing coal pulverizer air leakage coefficient function shown in Fig. 1；
Fig. 3 be a kind of shown in non-installation diagram 1 have reduce coal pulverizer air leakage coefficient function coal pulverizer sealing device the effect schematic diagram of coal pulverizer；
Fig. 4 is the effect schematic diagram being mounted with a kind of coal pulverizer with the coal pulverizer sealing device reducing coal pulverizer air leakage coefficient function shown in Fig. 1.
Fig. 5 is a kind of secondary maze part drawing with the coal pulverizer sealing device reducing coal pulverizer air leakage coefficient function of the present utility model.
1, labyrinth；2, tooth is sealed；3, labyrinth teeth；4, elastic sealing strip；5, the first assembling bolt；6, hollow axle；7, coal pulverizer；.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, detailed description of the invention of the present utility model is described in further detail.Following example are used for illustrating this utility model, but are not limited to scope of the present utility model.
Embodiment 1:
nullSee Fig. 1、Fig. 2 and Fig. 4，A kind of coal pulverizer sealing device with reduction coal pulverizer air leakage coefficient function described in this utility model one preferred embodiment 1，Use labyrinth sealed principle，Including labyrinth 1 and sealing tooth 2，Labyrinth 1 is arranged on the cylinder of coal pulverizer 7 by the first assembling bolt 5，Sealing tooth 2 is installed in the relevant position of hollow axle 6 simultaneously，Labyrinth teeth 3 it is provided with on labyrinth 1，Seal the elastic sealing strip 4 being provided with 2mm on tooth 2，The elastic sealing strip 4 being positioned on the identical tooth sealing tooth 2 is fixed by the second assembling bolt 8，Elastic sealing strip 4 and labyrinth teeth 3 carry out matched in clearance，Formed and seal structure，By coal pulverizer,The rotating part of 7 seals with standing part，And the left and right displacement of labyrinth teeth 3 is absorbed by the left and right deformation of elastic sealing strip 4，The upper and lower displacement of labyrinth teeth 3 is absorbed by the insertion depth of labyrinth teeth 3，Owing to left and right elastic sealing strip 4 kept contacting with labyrinth teeth 3 moment，Seal clearance between elastic sealing strip 4 and labyrinth teeth 3 is not more than 1mm，The sealing surface moment is made to be maintained at basic gapless state，So greatly reduce the air capacity leaking in low speed coal mill.
Embodiment 2:
On the basis of embodiment 1, diameter according to hollow axle 6 is along the circumferential direction, according to the mode that interval angles size is 45 ° between adjacent seals device, four above-mentioned coal pulverizer sealing devices with reduction coal pulverizer air leakage coefficient function are installed in the relevant position of coal pulverizer 7 and ceases to be busy axle 6, compared with Example 1, equipment is mounted with four above-mentioned coal pulverizer sealing devices with reduction coal pulverizer air leakage coefficient function, when a sealing device breaks down wherein, its excess-three coal pulverizer sealing device still can ensure relatively low air leak rate of air curtain normally, it is convenient for changing and maintenance failure device.
Embodiment 3:
See Fig. 5, on the basis of embodiment 1, the progression in labyrinth 1 is increased to two grades by one-level, be equipped with the sealing tooth matched simultaneously.In theory, when the progression in labyrinth 1 is one-level, it is possible to ensure to realize relatively low air leak rate of air curtain, compared with Example 1, after the progression in labyrinth is increased by embodiment 3, both ensure to achieve relatively low air leak rate of air curtain, add the service life of equipment and sealing device simultaneously, extend its maintenance period.
The above is only preferred implementation of the present utility model; it is not limited to this utility model; should be understood that; for those skilled in the art; on the premise of without departing from this utility model know-why; can also make some improvement and modification, these improve and modification also should be regarded as protection domain of the present utility model.
Claims (6)
1. there is the coal pulverizer sealing device reducing coal pulverizer air leakage coefficient function, including labyrinth (1)
With sealing tooth (2), it is characterised in that: it is provided with some labyrinth teeths (3) on described labyrinth (1), described close
Elastic sealing strip (4), described elastic sealing strip (4) and described labyrinth teeth (3) are installed in envelope tooth (2)
Carry out matched in clearance, formed and seal structure.
A kind of coal-grinding secret with reduction coal pulverizer air leakage coefficient function the most according to claim 1
Seal apparatus, it is characterised in that: between the sealing between described elastic sealing strip (4) and described labyrinth teeth (3)
Gap is not more than 1mm.
A kind of coal-grinding secret with reduction coal pulverizer air leakage coefficient function the most according to claim 1
Seal apparatus, it is characterised in that: the thickness of described elastic sealing strip (4) is 2mm.
A kind of coal-grinding secret with reduction coal pulverizer air leakage coefficient function the most according to claim 1
Seal apparatus, it is characterised in that: described a kind of coal pulverizer with reduction coal pulverizer air leakage coefficient function seals dress
Put the size of diameter according to hollow axle (6) along the circumferential direction, be 45 ° according to interval angles between parts
Or 60 ° or 90 ° installations, assemble and seal.
A kind of coal-grinding secret with reduction coal pulverizer air leakage coefficient function the most according to claim 1
Seal apparatus, it is characterised in that: the progression of described labyrinth (1) is according to coal pulverizer (7) rotating part and fixes
The increase of the spacing of part and increase.
A kind of coal-grinding secret with reduction coal pulverizer air leakage coefficient function the most according to claim 1
Seal apparatus, it is characterised in that: described labyrinth (1) is arranged on the cylinder of coal pulverizer (7), described sealing
Tooth (3) is arranged on hollow axle (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620367120.XU CN205587124U (en) | 2016-04-27 | 2016-04-27 | Coal pulverizer sealing device with reduce coal pulverizer air leakage coefficient function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620367120.XU CN205587124U (en) | 2016-04-27 | 2016-04-27 | Coal pulverizer sealing device with reduce coal pulverizer air leakage coefficient function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205587124U true CN205587124U (en) | 2016-09-21 |
Family
ID=56932388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620367120.XU Expired - Fee Related CN205587124U (en) | 2016-04-27 | 2016-04-27 | Coal pulverizer sealing device with reduce coal pulverizer air leakage coefficient function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205587124U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112984114A (en) * | 2021-02-04 | 2021-06-18 | 同济大学 | Low-temperature medium rotary sealing device of superconducting machinery of hollow shaft parts |
-
2016
- 2016-04-27 CN CN201620367120.XU patent/CN205587124U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112984114A (en) * | 2021-02-04 | 2021-06-18 | 同济大学 | Low-temperature medium rotary sealing device of superconducting machinery of hollow shaft parts |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160921 Termination date: 20180427 |