CN203730772U - Fluid-pressure rotating shaft packing seal device - Google Patents
Fluid-pressure rotating shaft packing seal device Download PDFInfo
- Publication number
- CN203730772U CN203730772U CN201420098314.5U CN201420098314U CN203730772U CN 203730772 U CN203730772 U CN 203730772U CN 201420098314 U CN201420098314 U CN 201420098314U CN 203730772 U CN203730772 U CN 203730772U
- Authority
- CN
- China
- Prior art keywords
- seal
- running shaft
- axle sleeve
- rotating shaft
- mounting flange
- 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 Devices (AREA)
Abstract
A fluid-pressure rotating shaft packing seal device is used for preventing fluid with certain pressure inside a working container from leaking out of the working container along a rotating shaft penetrating through the working container. The fluid-pressure rotating shaft packing seal comprises a shaft sleeve sleeving the rotating shaft, a seal box disposed on the periphery of the shaft sleeve and a mounting flange which is hermetically connected with the seal box and hermetically mounted on a to-be-sealed rotating shaft inlet in the working container, hollow cavities formed between the seal box and the mounting flange and between the seal box and the shaft sleeve are provided with packing which surrounds the shaft sleeve, and an elastic seal ring acting in pressing the packing is arranged on the periphery of the packing. The fluid-pressure rotating shaft packing seal device has the advantages that a good sealing effect is obtained, and long service life and no abrasion to the shaft are achieved.
Description
Technical field
The utility model relates to a kind of fluid pressure running shaft stuffing seal, and this device is used for preventing that the fluid that Work container inside has a certain pressure from leaking along the axial rotary Work container that runs through Work container is outside.
Background technique
Packing seal is the most ancient a kind of sealing means, history at the existing more than one thousand years of China, main as motive sealing, be widely used as the rotation axis seal of centrifugal pump, compressor, vacuum pump, stirrer and propeller for vessels, pressure is high to 35MPa, Applicable temperature is up to 600 ℃, sealing surface linear velocity to 20 meter per second.Packing seal mechanism be Gland to filler axial compression, by the distortion of elastic-plastic of filler, form radial force, and with axle close contact.Filling pressure near gland one side is maximum, with away from gland distance, pressure diminishes.On filler, being impregnated with oiling agent can reduce axle rotational resistance and improve sealing effect.
Gland sealed working principle has determined that it exists following defect: filler to the pressure of axle axially inhomogeneous, pressure near gland packing is large, little away from the pressure of gland packing, not only affects sealing effect, wearing and tearing to axle and filler itself are also large, affect the life-span; Next is how many running shafts all can occur eccentric shaking, and the process that filler is pressed close to running shaft by axial pressure by the elasto plastic deformation generation radial pressure of self has hysteresis quality, therefore can be unfavorable to sealing, occur leaking.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of fluid pressure running shaft stuffing seal, and this seal arrangement is good sealing effect not only, and the life-span is long, does not damage running shaft.
For solving the problems of the technologies described above, the utility model provides a kind of fluid pressure running shaft stuffing seal to comprise the axle sleeve being set on running shaft, the seal case that is positioned at axle sleeve periphery, be tightly connected and seal the mounting flange on the Work container running shaft entrance that is arranged on needs sealing with seal case, in cavity between seal case and mounting flange and axle sleeve, around axle sleeve, filler is installed, filler periphery is filler to be played to the elastic sealing ring of the effect of exerting pressure.In use, fluid pressure running shaft stuffing seal is that unit loading type is whole, be placed on the running shaft that runs through Work container, be set in and on the axle sleeve on running shaft, be furnished with axle sleeve positioning screwn, for the fastening location between axle sleeve and running shaft, be set between axle sleeve on running shaft and running shaft axle sleeve elastic seal ring is installed, for the sealing between axle sleeve and running shaft.The mounting flange that sealing is arranged on the Work container running shaft entrance that needs sealing is positioned on Work container by circumferential uniform some mounting flange screw fastenings.Between seal case is away from the outside of mounting flange one end and axle sleeve, limiting board is installed, limiting board is split, needs to back out limiting board fastening screw trip bolt before running, and release limiting board is no longer limited constraint when axle sleeve is turned round with running shaft.Because seal case elastic seal ring is installed between seal case and mounting flange, by circumferential uniform some seal case mounting screws, seal case and mounting flange are tightly connected, the two ends that add elastic sealing ring are designed with elastic sealing ring sphenocephaly, on seal case, be also designed with seal case pressurization hole, when injecting pressure fluid, pressure just can act on elastic sealing ring equably, and pass to the filler in elastic sealing ring, this has just kept filler to be balancedly fitted in all the time axle sleeve surface, in order to reduce resistance and to improve sealing effect, on filler, be impregnated with lubricant oil.The filler of this device and the fricting working surface between axle sleeve are stressed even and maintenance laminatings constantly everywhere, so do not need to apply very large power, just can not obtain good sealing effect, and the life-span is long and axle is not had to wearing and tearing.
A kind of fluid pressure running shaft stuffing seal that the beneficial effects of the utility model are to provide is when obtaining good sealing effect, and the life-span is long and axle is not had to wearing and tearing.
Accompanying drawing explanation
Fig. 1 is fluid pressure running shaft stuffing seal structural representation.
Embodiment
In figure, below is Work container, does not draw Work container here, and running shaft 1 runs through Work container.
Fluid pressure running shaft stuffing seal shown in figure, comprise the axle sleeve 2 being set on running shaft 1, the seal case 4 that is positioned at axle sleeve 2 peripheries, be tightly connected with seal case 4 and seal the mounting flange 8 on the Work container running shaft entrance that is arranged on needs sealing, in cavity between seal case 4 and mounting flange 8 and axle sleeve 2, around axle sleeve 2, filler 5 is installed, filler 5 peripheries are filler 5 to be played to the elastic sealing ring 6 of the effect of exerting pressure.In use, fluid pressure running shaft stuffing seal integral body is placed on the running shaft 1 that runs through Work container, be set on the axle sleeve 2 on running shaft 1 and be furnished with axle sleeve positioning screwn 21, for the fastening location between axle sleeve 2 and running shaft 1, be set between axle sleeve 2 on running shaft 1 and running shaft 1 axle sleeve elastic seal ring 22 is installed, for the sealing between axle sleeve 2 and running shaft 1.Sealing is arranged on mounting flange 8 on Work container running shaft 1 entrance that needs sealing by circumferential uniform fastening being positioned on Work container of some mounting flange screws 81.Between seal case 4 is away from the outside of mounting flange 8 one end and axle sleeve 2, limiting board 3 is installed, limiting board is split, needs to back out limiting board fastening screw trip bolt 31 before running, and release limiting board 3 is no longer limited constraint while making axle sleeve 2 with running shaft 1 running.Because seal case elastic seal ring 43 is installed between seal case 4 and mounting flange 8, by circumferential uniform some seal case mounting screws 42, seal case 4 and mounting flange 8 are tightly connected, the two ends that add elastic sealing ring 6 are designed with elastic sealing ring sphenocephaly 61, and on seal case 4, be designed with seal case pressurization hole 41, when injecting pressure fluid 7, pressure just can act on elastic sealing ring 6 equably, and pass to the filler 5 in elastic sealing ring 6, this has just kept filler 5 to be balancedly fitted in all the time axle sleeve 2 surfaces, in order to reduce resistance and to improve sealing effect, on filler 5, be impregnated with lubricant oil.In figure, on seal case 4, being designed with 2 seal case pressurization 41Fen both sides, hole and arranging up and down, is in order to make pressure fluid bottom in and top out play hydronic effect.
Claims (7)
1. a fluid pressure running shaft stuffing seal, comprise the axle sleeve being set on running shaft, the seal case that is positioned at axle sleeve periphery, be tightly connected with seal case and seal the mounting flange on the Work container running shaft entrance that is arranged on needs sealing, it is characterized in that around axle sleeve, filler being installed in the cavity between seal case and mounting flange and axle sleeve, filler periphery is filler to be played to the elastic sealing ring of the effect of exerting pressure.
2. a kind of fluid pressure running shaft stuffing seal according to claim 1, is characterized in that being set in and on the axle sleeve on running shaft, is furnished with axle sleeve positioning screwn.
3. a kind of fluid pressure running shaft stuffing seal according to claim 1, is characterized in that being set between axle sleeve on running shaft and running shaft axle sleeve elastic seal ring is installed.
4. a kind of fluid pressure running shaft stuffing seal according to claim 1, is characterized in that being designed with on seal case seal case pressurization hole.
5. a kind of fluid pressure running shaft stuffing seal according to claim 1, is characterized in that the two ends of elastic sealing ring are designed with elastic sealing ring sphenocephaly.
6. a kind of fluid pressure running shaft stuffing seal according to claim 1, is characterized in that, between seal case is away from the outside of mounting flange one end and axle sleeve, limiting board is installed.
7. a kind of fluid pressure running shaft stuffing seal according to claim 1, is characterized in that being provided with seal case elastic seal ring between seal case and mounting flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420098314.5U CN203730772U (en) | 2014-03-03 | 2014-03-03 | Fluid-pressure rotating shaft packing seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420098314.5U CN203730772U (en) | 2014-03-03 | 2014-03-03 | Fluid-pressure rotating shaft packing seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203730772U true CN203730772U (en) | 2014-07-23 |
Family
ID=51200847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420098314.5U Expired - Fee Related CN203730772U (en) | 2014-03-03 | 2014-03-03 | Fluid-pressure rotating shaft packing seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203730772U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883736A (en) * | 2014-03-03 | 2014-06-25 | 浙江长城减速机有限公司 | Fluid pressure packing seal device of rotary shaft |
| CN105840828A (en) * | 2016-06-07 | 2016-08-10 | 浙江艾领创矿业科技有限公司 | Mechanical seal structure of Ai sand mill |
| CN107061749A (en) * | 2017-03-20 | 2017-08-18 | 北京化工大学 | Sealing body, shaft sealer and control method |
| CN109973663A (en) * | 2019-04-19 | 2019-07-05 | 双龙集团有限公司 | Elastic gas sealing mechanism |
-
2014
- 2014-03-03 CN CN201420098314.5U patent/CN203730772U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883736A (en) * | 2014-03-03 | 2014-06-25 | 浙江长城减速机有限公司 | Fluid pressure packing seal device of rotary shaft |
| CN105840828A (en) * | 2016-06-07 | 2016-08-10 | 浙江艾领创矿业科技有限公司 | Mechanical seal structure of Ai sand mill |
| CN107061749A (en) * | 2017-03-20 | 2017-08-18 | 北京化工大学 | Sealing body, shaft sealer and control method |
| CN107061749B (en) * | 2017-03-20 | 2019-11-26 | 北京化工大学 | Shaft sealer and control method |
| CN109973663A (en) * | 2019-04-19 | 2019-07-05 | 双龙集团有限公司 | Elastic gas sealing mechanism |
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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: 20140723 Termination date: 20180303 |