CN201526677U - Nitrogen sealing device - Google Patents
Nitrogen sealing device Download PDFInfo
- Publication number
- CN201526677U CN201526677U CN2009200879634U CN200920087963U CN201526677U CN 201526677 U CN201526677 U CN 201526677U CN 2009200879634 U CN2009200879634 U CN 2009200879634U CN 200920087963 U CN200920087963 U CN 200920087963U CN 201526677 U CN201526677 U CN 201526677U
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- CN
- China
- Prior art keywords
- nitrogen
- filler seat
- inflammable
- gas
- sealing device
- 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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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model provides a nitrogen sealing device. An oil extraction packing between a filler base and a rotating shaft is internally provided with a gas filling ring, and is filled with nitrogen with certain pressure, thus preventing the leakage of inflammable liquefied coal dust and harmful inflammable gas in a machine slot, and achieving the purpose of sealing; and the nitrogen belongs to inert gas, and can effectively prevent the spontaneous combustion and explosion of the inflammable liquefied coal dust and the harmful inflammable gas. The nitrogen sealing device has strong sealing performance, safety, simple structure and convenient assembly and disassembly.
Description
Technical field
The utility model relates to the seal arrangement in the conveyor, particularly a kind of nitrogen gas seal equipment.
Background technique
China is digesting and assimilating on the basis of external direct coal liquefaction technology in order to break through the oil quagmire, intends realizing the industrialization development of " coal system oil ", and has implemented a plurality of projects.Raw coal is in the course of conveying of heating and gasifying, adopt sealing explosion-proof type tube-type spiral conveyer to carry, in casing, be full of inflammable liquid powdered coal and harmful inflammable gas, the granularity of liquefaction coal dust is about 5 μ m, harmful gas easily the gap of the drive end by screw conveyor and afterbody running shaft and casing to external leakage.When inflammable liquid powdered coal and harmful inflammable gas reach finite concentration, run into Mars and can blast, cause the accident; Harmful inflammable gas external leakage when the staff enters this Qu Chengshi, can cause human casualty accident.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of nitrogen gas seal equipment, can stop inflammable liquid powdered coal and harmful inflammable gas to leak from the running shaft surface.
For solving the problems of the technologies described above, the technological scheme that the utility model adopted is: a kind of nitrogen gas seal equipment, comprise the filler seat, cover plate is connected with the filler seat by hold-down bolt, the filler seat is provided with oil nozzle, be provided with the immersion oil packing between filler seat and the running shaft, be provided with a plurality of inflation rings in the filler seat, suction tude is connected with the inflation ring.
Described inflation number of rings amount is two.
Be filled with nitrogen in the inflation ring.
Described nitrogen pressure is greater than gas pressure intensity 0.01-0.03MPa in the trough.
The nitrogen gas seal equipment that the utility model provides, by the inflation ring is set in the immersion oil packing between filler seat and running shaft, and charge into the nitrogen of certain pressure, thus stop the leakage of inflammable liquid powdered coal and harmful inflammable gas in the trough, reached the purpose of sealing; And nitrogen is inert gas, can effectively prevent the spontaneous combustion and the blast of inflammable liquid powdered coal and harmful inflammable gas.The utility model sealing is strong, safe, simple in structure, mounting or dismounting are convenient.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the utility model overall structure schematic representation;
Fig. 2 is the utility model N-N sectional view.
Embodiment
As depicted in figs. 1 and 2, a kind of nitrogen gas seal equipment comprises filler seat 1, cover plate 2 is connected with filler seat 1 by hold-down bolt 5, and filler seat 1 is provided with oil nozzle 9, is provided with immersion oil packing 8 between filler seat 1 and the running shaft 7, be provided with a plurality of inflation rings 4 in the filler seat 1, suction tude 3 is connected with inflation ring 4.
It is two that described inflation encircles 4 quantity.
Be filled with nitrogen in the inflation ring 4.
Described nitrogen pressure is greater than gas pressure intensity 0.01-0.03MPa in the trough.
A nitrogen gas seal equipment is respectively installed at drive end and afterbody running shaft place at screw conveyor, and nitrogen gas seal equipment is fixed on the casing of screw conveyor two ends, and two inflation rings 4 all are contained between filler seat 1 and the running shaft 7.The outer annular groove of inflation ring 4 is alignd with the hydraulic fluid port of suction tude 3 with oil nozzle 9; Fill up immersion oil packing 8 in the filler seat 1; Oil nozzle 9 is to aim at nitrogen gas seal equipment to inject lubricant oil.
Exert pressure by 5 pairs of glands 6 of hold-down bolt, immersion oil packing 8 is subjected to the extruding of gland 6, thereby produces radial pressure, and immersion oil packing 8 is fastened between filler seat 1 and the running shaft 7; When equipment work, the nitrogen that is about 0.03MPa by suction tude 3 continuous charged pressures enters inflation ring 4, between inflation ring 4 and running shaft 7, be full of nitrogen, nitrogen has fire retardation, be evenly distributed on the gap left natural leak of a fire-retardant nitrogen part between running shaft 7 and immersion oil packing 8 in the inflation ring 4 during the running shaft rotation, remaining part enters in the casing to the right, the nitrogen that has certain pressure enters the tubular type trough to the right, it has stoped the liquefaction leakage of pulverized coal on the one hand, reaches the purpose of isolating seal; On the other hand because nitrogen is inert gas, can prevent the spontaneous combustion of pulverized coal that liquefies, avoid the generation of explosive accident again, form one deck oil film on the lubricant oil running shaft, frictional force in the time of can reducing the running shaft rotation, also reduced the gap between running shaft and the stuffing, helped to stop nitrogen, reduced the loss of nitrogen to external leakage.
Claims (4)
1. nitrogen gas seal equipment, comprise filler seat (1), cover plate (2) is connected with filler seat (1) by hold-down bolt (5), filler seat (1) is provided with oil nozzle (9), be provided with immersion oil packing (8) between filler seat (1) and the running shaft (7), it is characterized in that: be provided with a plurality of inflation rings (4) in the filler seat (1), suction tude (3) is connected with inflation ring (4).
2. a kind of nitrogen gas seal equipment according to claim 1 is characterized in that: described inflation ring (4) quantity is two.
3. a kind of nitrogen gas seal equipment according to claim 1 and 2 is characterized in that: be filled with nitrogen in the inflation ring (4).
4. a kind of nitrogen gas seal equipment according to claim 3 is characterized in that: described nitrogen pressure is greater than gas pressure intensity 0.01-0.03MPa in the trough.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200879634U CN201526677U (en) | 2009-08-11 | 2009-08-11 | Nitrogen sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200879634U CN201526677U (en) | 2009-08-11 | 2009-08-11 | Nitrogen sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201526677U true CN201526677U (en) | 2010-07-14 |
Family
ID=42517963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200879634U Expired - Fee Related CN201526677U (en) | 2009-08-11 | 2009-08-11 | Nitrogen sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201526677U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913485A (en) * | 2010-08-26 | 2010-12-15 | 湖北宜都天宜机械有限公司 | Special air-tight buried scraper conveyor for gasification |
-
2009
- 2009-08-11 CN CN2009200879634U patent/CN201526677U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913485A (en) * | 2010-08-26 | 2010-12-15 | 湖北宜都天宜机械有限公司 | Special air-tight buried scraper conveyor for gasification |
| CN101913485B (en) * | 2010-08-26 | 2015-04-08 | 湖北宜都天宜机械有限公司 | Special air-tight buried scraper conveyor for gasification |
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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: 20100714 Termination date: 20140811 |
|
| EXPY | Termination of patent right or utility model |