CN201579104U - Bearing bush sealing device of double-inlet double-outlet coal mill - Google Patents
Bearing bush sealing device of double-inlet double-outlet coal mill Download PDFInfo
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- CN201579104U CN201579104U CN2010200624178U CN201020062417U CN201579104U CN 201579104 U CN201579104 U CN 201579104U CN 2010200624178 U CN2010200624178 U CN 2010200624178U CN 201020062417 U CN201020062417 U CN 201020062417U CN 201579104 U CN201579104 U CN 201579104U
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- coal mill
- lubricating oil
- oil system
- bearing bush
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Abstract
The utility model relates to a sealing device of coal mill, in particular to a bearing bush sealing device of double-inlet double-outlet coal mill, which comprises the hollow shaft of a double-inlet double-outlet coal mill; both the bearings of the drive end and the non-drive end of the hollow shaft of the double-inlet double-outlet coal mill are black tiles, which are namely bearing bushes; the bearing bush is provided with an independent lubricating oil system; the lubricating oil system comprises an empty cavity sleeved outside the bearing bush and provided with an inlet tube and an outlet tube; the two sides of the shell of the lubricating oil system are provided with static rubber seal tightened and fixed by a sealing gland; and a dynamic seal ring is fixedly arranged on the outer circle of the bearing bush between the sealing gland and the shell of the lubricating oil system. The bearing bush sealing device of double-inlet double-outlet coal mill has the advantages of reasonable structure, convenient installation, high safety, good sealing performance, wear-resistance and high temperature resistance as well as long service life.
Description
[technical field]
The utility model relates to the coal pulverizer sealing device, particularly a kind of double inlet and outlet coal mill bearing shell sealing device.
[background technology]
Grease seal is generally all adopted in existing coal pulverizer hollow shaft sealing on the market, serves as filler with wool felt again.In the coal pulverizer running, after lubricating oil soaked into wool felt, outside seepage was difficult to reach sealing effectiveness under the extruding of coal pulverizer hollow shaft.In recent years, increasing power plant boiler begins to adopt double inlet and outlet coal mill to process coal dust.The ball mill that goes with each other all the time is applicable to all coals, to grinding coefficient and abrasion index without any restriction, especially is fit to grind high abrasion index (Ke＞3.5) and the also high coal of fugitive constituent.This coal pulverizer is strong to the adaptive capacity that coal changes, and is insensitive to " three ", coal powder grinding can be got very thin, and fineness of pulverized coal good uniformity, continuously the cycle of operation long, the equipment availability height, anti-wear performance is good, maintenance workload is little.But the hollow shaft sealing problem of double inlet and outlet coal mill still is an insoluble problem, although adopted oil scraper ring and rubber seal, but because coal pulverizer operating condition complexity, rotation, axial displacement, bob three-dimensional motion produce simultaneously, and its sealing effectiveness is not fully up to expectations.
[utility model content]
It is a kind of simple in structure that technical problem to be solved in the utility model is to provide, the reliability height, and good airproof performance is changed double inlet and outlet coal mill bearing shell sealing device easily.
The utility model solves the problems of the technologies described above by the following technical programs: double inlet and outlet coal mill bearing shell sealing device, comprise the double inlet and outlet coal mill hollow shaft, and the drive end of described coal pulverizer hollow shaft and the bearing of anti-drive end are black golden tile, i.e. bearing shell; Described bearing shell is provided with independently lubricating oil system, described lubricating oil system comprises a cavity body that is sleeved on outside the described bearing shell and has oil inlet pipe and flowline, be provided with the rubber static seal that is fixed by sealing gland in described lubricating oil system shell both sides, the bearing shell cylindrical between described sealing gland and described lubricating oil system shell is fixed with dynamic seal ring.
The utility model principle be adopt " be association of activity and inertia " and combined seal structure, dynamic seal ring is held therewith rotation on hollow shaft tightly, and the static seal circle is because sealed gland is fixed transfixion.The sealing structure has good sealing effectiveness, and can compensate well because the gap that axial displacement, bob cause, and dynamic seal ring do not contact with the static seal circle, so equipment does not produce wearing and tearing, long service life.
Advantage of the present utility model is: this product has rational in infrastructure, and is easy for installation, safe, good airproof performance, Wear-resistant, high-temperature resistant, the advantage that the life-span is long.
[description of drawings]
The utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the utility model structural representation.
[specific embodiment]
Referring to Fig. 1, double inlet and outlet coal mill bearing shell sealing device comprises double inlet and outlet coal mill hollow shaft 1, and the drive end of described coal pulverizer hollow shaft and the bearing of anti-drive end are black golden tile 2, and promptly bearing shell is commonly called as big watt.Described bearing shell 2 is provided with independently lubricating oil system 3: described lubricating oil system 3 comprises a cavity body that is sleeved on outside the described bearing shell 2 and has oil inlet pipe 4 and flowline 5, and oil inlet pipe 4 links to each other with external fuel tank respectively with flowline 5, constitutes circulating oil path.Be provided with the rubber static seal 7 that is fixed by sealing gland 6 in described lubricating oil system 3 shell both sides, the bearing shell cylindrical between described sealing gland 6 and described lubricating oil system 3 shells is fixed with dynamic seal ring 8.
When dynamic seal ring 8 is installed, press the length of 95% intercepting sealing strip of coal-grinding movement axle 1 girth, the two ends coating adhesive, by certain direction, sealing strip is close to hollow shaft 1, after the tension alignment two ends are docked, slightly exert pressure, after about one minute, dynamic seal ring 8 promptly forms.
Need to prove that the dynamic seal ring 8 among Fig. 1 is just in order to finish the purpose of sealing.Those skilled in the art can adopt the sealing strip in various cross sections to make dynamic seal ring 8, as long as can finish sealing.
Although illustrated and described embodiment of the present utility model, for the ordinary skill in the art, be appreciated that under the situation that does not break away from principle of the present utility model and spirit and can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present utility model is limited by claims and equivalent thereof.
Claims (1)
1. double inlet and outlet coal mill bearing shell sealing device comprises the double inlet and outlet coal mill hollow shaft, and the drive end of described coal pulverizer hollow shaft and the bearing of anti-drive end are black golden tile, i.e. bearing shell; Described bearing shell is provided with independently lubricating oil system, described lubricating oil system comprises a cavity body that is sleeved on outside the described bearing shell and has oil inlet pipe and flowline, be provided with the rubber static seal that is fixed by sealing gland in described lubricating oil system shell both sides, it is characterized in that: be fixed with dynamic seal ring on the bearing shell cylindrical between described sealing gland and the described lubricating oil system shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200624178U CN201579104U (en) | 2010-01-06 | 2010-01-06 | Bearing bush sealing device of double-inlet double-outlet coal mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200624178U CN201579104U (en) | 2010-01-06 | 2010-01-06 | Bearing bush sealing device of double-inlet double-outlet coal mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201579104U true CN201579104U (en) | 2010-09-15 |
Family
ID=42721095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200624178U Expired - Fee Related CN201579104U (en) | 2010-01-06 | 2010-01-06 | Bearing bush sealing device of double-inlet double-outlet coal mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201579104U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150552A (en) * | 2018-01-15 | 2018-06-12 | 无锡雪浪环境科技股份有限公司 | Modified mucking machine main shaft sealing device |
-
2010
- 2010-01-06 CN CN2010200624178U patent/CN201579104U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150552A (en) * | 2018-01-15 | 2018-06-12 | 无锡雪浪环境科技股份有限公司 | Modified mucking machine main shaft sealing device |
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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 |
Granted publication date: 20100915 Termination date: 20130106 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |